CN114414101A - Step-by-step computing natural gas energy metering device and Internet of things system - Google Patents

Abstract

The invention discloses a step-by-step operation type natural gas energy metering device which comprises a shell, wherein a heating value analysis processing module, a flow comprehensive analysis processing module and an energy calculation module are arranged in the shell; the heating analysis processing module is used for calculating the unit heating value of the natural gas and transmitting the calculation result to the energy calculation module; the flow comprehensive analysis processing module is used for acquiring natural gas sensing information, calculating to obtain standard condition flow information and transmitting the standard condition flow information to the energy calculation module; and the energy calculation module calculates the energy of the natural gas according to the acquired standard condition flow information and the natural gas unit heating value information of the corresponding time period. The energy metering device is integrally designed, the parameter matching performance of each functional module is good, and the metering is more accurate; the integrated design is favorable for improving the purchasing efficiency of clients and the working efficiency of equipment management, and a step-by-step operation mode is adopted, so that the operation load of the module can be reduced, the operation speed and efficiency are effectively improved, and the operation faults are reduced.

Description

Step-by-step computing natural gas energy metering device and Internet of Things system

technical field

The invention relates to the technical field of natural gas energy measurement, in particular to a step-by-step arithmetic natural gas energy measurement device and an Internet of Things system.

Background technique

As a high-quality, high-efficiency and clean energy and an important chemical raw material, natural gas has been widely valued and used preferentially in all countries of the world, accounting for 35% of the energy structure. With the rising status of natural gas as an environmentally friendly energy source, accurate, fair and impartial measurement of natural gas is an important technical task for scientific management of natural gas, which is related to the interests of many parties. At the same time, the actual value of natural gas as a fuel should be its calorific value rather than its volume. Foreign natural gas measurement methods generally use energy measurement methods, so it is very important to carry out research on natural gas energy measurement equipment.

Existing natural gas gathering and transportation stations are equipped with metering equipment, but traditional metering equipment cannot judge the accuracy of energy metering results.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, and the purpose is to provide a step-by-step operation type natural gas energy metering device, realize the integrated design of the natural gas energy metering device, the parameters of each functional module are well matched, and the measurement is more accurate; The integrated design is conducive to improving customer procurement efficiency and improving equipment management work efficiency. The step-by-step computing method can reduce the computing load of the module, effectively improve computing speed and efficiency, and reduce computing failures.

The present invention is achieved through the following technical solutions:

The step-by-step operation type natural gas energy metering device includes a casing, and the casing is provided with a calorific value analysis and processing module, a flow comprehensive analysis and processing module and an energy calculation module; the calorific value analysis and processing module is used for calculating the unit calorific value of natural gas, and The calculation result is transmitted to the energy calculation module; the flow comprehensive analysis and processing module is used to obtain the natural gas perception information, calculate the standard condition flow information and transmit it to the energy calculation module; the energy calculation module is based on the obtained standard condition flow information and Calculate the energy of natural gas based on the unit calorific value information of natural gas in the corresponding period.

Further, it also includes a touch display, a flow sensor, a pressure sensor, and a temperature sensor, and the comprehensive flow analysis and processing module is used to analyze and process the signals collected by the flow sensor, the pressure sensor, and the temperature sensor, and calculate the flow rate under natural gas conditions. , and realize the conversion to the standard flow; the touch display is respectively connected with the comprehensive flow analysis and processing module, the calorific value analysis and processing module and the energy calculation module, and can be connected to the flow comprehensive analysis and processing module, the calorific value analysis and processing module, the energy calculation module The module sends control commands to adjust the parameters within the authority.

Further, the input end of the calorific value analysis and processing module is provided with a sample gas processing system and a standard gas processing system, and the input end of the sample gas processing system is also provided with a sample gas controller, and the input of the sample gas controller is provided. There is also a sample gas collection interface at the end, and a standard gas collection interface is also provided at the input end of the standard gas processing system; the standard gas processing system is used to remove impurities from the collected standard gas, and the calorific value analysis The processing module calculates the calorific value of the standard gas after removing impurities, and compares the calculation result with the standard value of the calorific value of the standard gas to realize the calibration of the calorific value analysis and processing module; the sample gas processing system is used for collecting the collected gas. The calorific value analysis and processing module calculates the unit calorific value of the natural gas after the impurity removal, and transmits the calculation result to the energy calculation module.

Further, a communication module is also included, and the communication module is communicatively connected with the energy calculation module to realize the external communication of the step-by-step arithmetic natural gas energy metering device.

Further, it also includes a gas pipe running through the casing, the sample gas collection interface includes a sampling pipe arranged in the casing and communicated with the gas pipe, and an air pump communicated with the sampling pipe is also provided on the outer wall of the sampling pipe , the sampling tube is provided with a fixed rod, the fixed rod can extend into the sampling tube, and the fixed rod is slidably provided with a first movable block and a second movable block whose outer diameter matches the inner diameter of the sampling tube; the fixed rod The rod is also provided with a vent hole for discharging the fluid in the sampling pipe, and the vent hole can be opened when the first movable block moves toward the direction of the second movable block.

For the natural gas energy metering device in the prior art, when measuring the natural gas in the gas pipe, since the traditional sample gas collection interface adopts the connection method between the sampling pipe and the gas pipe, when the natural gas in the gas pipe needs to be collected, use the setting The gas pump in the gas pump generates suction in the sampling pipe, and sucks the natural gas in the gas pipe into the sampling pipe for subsequent energy analysis. However, when sampling natural gas in different periods, part of the sample gas collected in the previous period will always remain in the sampling pipe. , resulting in the collection of natural gas in the gas pipe in a later period, the natural gas collected in the two periods will be mixed together, resulting in an error in measuring the energy value of the natural gas in this period. A first movable block and a second movable block are arranged in the pipe, and both the first movable block and the second movable block can move along the axial direction of the sampling pipe in the sampling pipe, and are also provided with the first movable block and the second movable block respectively in the sampling pipe. The two movable blocks are slidably connected to a fixed rod. The fixed rod is also provided with an exhaust hole for discharging the fluid in the sampling pipe. When the natural gas in the gas pipe needs to be collected during this period, the first movable block is first directed towards the second movable block. When moving, since the outer diameter of the first movable block is the same as the inner diameter of the sampling pipe, the first movable block can compress the natural gas remaining in the sampling pipe for a period of time during the movement, and the exhaust hole on the fixed rod is open at the same time. Therefore, when the first movable block compresses the natural gas remaining in the sampling pipe, it can be quickly discharged into the gas pipe from the exhaust hole, thereby realizing the natural gas remaining in the sampling pipe during the natural gas collection process in the previous period. purpose of discharge.

When the natural gas in the gas pipe is collected, since the fixed rod can move in the sampling pipe along its axial direction, the first movable block and the second movable block are moved closer together to exhaust all the natural gas remaining in the sampling pipe. Then, use the set fixing rod to extend the first movable block and the second movable block that are close to each other into the gas pipe together, and then return the first movable block to the sampling pipe first. During the process of returning to the sampling pipe, the generated negative pressure can suck the natural gas in the gas pipe for this period of time into the sampling pipe, and realize the rapid collection of natural gas in this period. The second movable block is also returned to the sampling pipe, and the nozzle of the sampling pipe is blocked, which ensures that the natural gas in different periods can be accurately collected in the sampling pipe, so that the energy value of the natural gas measured in each period is more accurate.

Further, it also includes a first telescopic piece arranged in the sampling tube, one end of the first telescopic piece is connected with the inner wall of the casing, and the other end is connected with the first movable block along the axial direction of the sampling tube; The axial direction of the telescopic element is inserted into the first telescopic element.

The provided first telescopic part is used to drive the normal movement of the first movable block in the sampling tube.

Further, the first telescopic piece is also provided with a second telescopic piece, one end of the second telescopic piece is connected with the inner top surface of the first telescopic piece, and the other end is connected with the fixing rod; the first telescopic piece and the The second telescopic parts are all bellows, and are respectively connected with the pump body through air pipes.

The provided second telescopic piece is used to drive the normal movement of the fixed rod in the sampling tube. The first telescopic piece and the second telescopic piece set in this technical solution both use bellows, which are connected to the pump body provided in the casing through the air pipe. , using the provided pump body to inflate the gas into the first telescopic piece and the second telescopic piece, since the bellows can expand and stretch along its axial direction after being inflated, the first telescopic piece and the second telescopic piece can be respectively The position of the first movable block and the fixed rod in the sampling tube can be adjusted.

Further, a channel is also provided in the fixing rod, one end of the channel is communicated with the exhaust hole, and the other end is communicated with the side wall of the fixing rod; the second movable block is provided with an inner diameter matching the outer diameter of the fixing rod. A connecting hole, the fixing rod is inserted into the connecting hole, the inner wall of the connecting hole is provided with a first accommodating cavity, and the first accommodating cavity is provided with a first elastic member and a blocking block, and the first elastic member produces The elastic force can push the blocking block into the channel and block the channel.

In order to ensure that when the first telescopic element drives the first movable block to move in the direction of the second movable block, the exhaust hole close to the lower end of the fixing rod can be opened, and at the same time, it is also ensured that the first movable block moves away from the second movable block. During the movement of the second movable block in the direction, the exhaust hole is in a blocked state, so a channel with an inverted "T" structure is set in the fixed rod. The upper end of the channel is in communication with the exhaust hole, while the other two The ends are respectively communicated with both sides of the fixed rod. When the blocking block on the inner wall of the connecting hole of the second movable block is flush with the channel, under the action of the first elastic member, the blocking block is pushed into the channel, and the channel is adjusted. Blocking, so as to achieve the blocking of the exhaust hole.

When the first movable block moves toward the second movable block, the first movable block compresses the natural gas remaining in the sampling pipe, forcing the natural gas to enter the channel through the exhaust hole, and acts on the seal in the channel. The blocking block, as the pressure generated by the first movable block in the process of moving gradually increases, when the pressure is greater than the elastic force of the first elastic member, the blocking block is forced to compress the first elastic member and retract to the first accommodating cavity Inside, the fixed rod at this time removes the constraining force of the blocking block on it, and the second telescopic part is a bellows. When the first movable block moves in the sampling pipe, the air pressure generated by compressing the natural gas can force the fixed rod to take the initiative. Moving towards the gas pipe, the channel on the fixing rod is dislocated from the first accommodating cavity, and finally the passages on both sides of the fixing rod are extended into the gas pipe to realize the communication between the gas pipe and the exhaust hole, thereby making the The natural gas remaining in the sampling pipe can finally enter into the gas pipe through the exhaust hole and the channel in sequence, and the gas remaining in the sampling pipe sampled in the previous period is discharged.

When the first movable block and the second movable block are close together, under the action of the second telescopic element, the fixed rod can be pulled to retract back. When the channel on the fixed rod is retracted to be flush with the blocking block, Under the action of the first elastic member, the blocking block is reinserted into the channel, the channel is blocked by the set blocking block, and the second movable block is re-fixed on the fixing rod to ensure that the exhaust hole is closed. state.

Further, a second accommodating cavity is also provided on both sides of the inner wall of the sampling tube, and the second accommodating cavity is provided with a second elastic member and a limit block; both sides of the second movable block are provided with There is a third accommodating cavity, when the third accommodating cavity on the second movable block moves to be flush with the second accommodating cavity, the elastic force generated by the second elastic member can push the limiting block to be inserted into the third accommodating cavity.

In this technical solution, when the exhaust hole needs to be connected to the gas pipe, the second movable block needs to be separated from the fixed rod, and at the same time, the second movable block needs to be fixed with the inner wall of the sampling pipe, so as to ensure that the fixed rod can be smoothly The second movable block moves up, therefore, a second elastic member and a limit block are arranged on the inner wall of the sampling tube, and the elastic force generated by the second elastic member is used to push the limit block to be inserted into the third accommodating cavity of the second movable block , realizing the fixation between the second movable block and the adopting tube.

Further, the end of the first movable block facing the direction of the second movable block is provided with a first unlocking block, the end of the first unlocking block facing the direction of the second movable block is provided with a gap, and the gap is provided with a third unlocking block. an elastic piece and a second unlocking block; the end face of the second movable block facing the direction of the first movable block is provided with a groove, the first unlocking block can be inserted into the groove, and the groove is communicated with the third accommodating cavity; The elastic force of the third elastic member is greater than that of the second elastic member.

When the natural gas in the gas pipe needs to be sampled, in order to ensure that the second movable block can be separated from the adopting pipe smoothly, the first movable block is also provided with a first unlocking block, a third elastic member and a second unlocking block. When the first movable block and the second movable block are close together, the first unlocking block on the first movable block can be inserted into the groove on the second movable block, and when the first movable block and the second movable block are completely close together , the set second unlocking block is flush with the limiting block, and under the action of the third elastic member, the second unlocking block is used to push the limiting block back into the second accommodating cavity, so as to realize the adjustment of the limiting block to the second accommodating cavity. The removal of the constraint of the second movable block enables the second movable block to move smoothly in the sampling tube following the fixed rod.

Further, the limiting block and the second unlocking block are both conical structures, and the cone tips of the limiting block and the second unlocking block face each other.

Since the provided second unlocking block needs to return the limiting block to the second accommodating cavity, when the first movable block moves back in the direction away from the second movable block, in order to ensure the second unlocking located in the third accommodating cavity The block can be smoothly removed from the groove of the second movable block, so the second unlocking block is set to a conical structure, so that the second unlocking block is used to force the second unlocking block during the upward movement process. The block can be retracted toward the direction of the third elastic piece, so that the second unlocking block can smoothly pass through the groove;

Similarly, when the first unlocking block on the first movable block is inserted into the groove, the upper surface of the second movable block acts on the conical surface of the second unlocking block, forcing the second unlocking block to compress the third elastic member, So that it can be inserted into the groove smoothly.

When the fixed rod drives the second movable block and the first movable block to extend into the gas pipe together, when the first movable block and the second movable block need to be returned to the sampling pipe in turn, in order to ensure the first movable block and the second movable block The movable block can pass through the limit block smoothly, so the limit block is also set into a conical structure, and the second movable block and the first movable block are used to act on the conical surface of the limit block, so that the limit block is retracted to the second in the receiving cavity.

A step-by-step computing natural gas energy metering IoT system, including a user platform, a service platform, a management platform, a sensor network platform and a sensor control platform that interact in sequence;

The sensing control platform is the above-mentioned natural gas energy metering device, and the sensing control platform transmits the acquired sensing information to the management platform through the sensing network platform;

The management platform includes an energy metering management system, the energy metering management system comprehensively analyzes and processes the received perception information, transmits user demand information to the user platform through the service platform, and transmits user demand information to the sensor network platform through the sensor network platform. The control platform issues control instructions.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

1. The present invention realizes the integrated design of the natural gas energy metering device, the parameters of each functional module are well matched, and the measurement is more accurate; the integrated design is conducive to improving the efficiency of customer procurement, and at the same time improving the efficiency of equipment management. The step-by-step operation mode of the module reduces the operation load of the module, effectively improves the operation speed and efficiency, and reduces operation failures;

2. When the present invention collects the natural gas in the gas pipe, the first movable block can be driven to move in the sampling pipe by the first telescopic member, and the natural gas remaining in the sampling pipe in the previous period can be quickly exhausted from the fixed rod. The hole is discharged into the gas pipeline, and then the second movable block is inserted into the gas pipe from the nozzle of the sampling pipe, and the natural gas in this period is pumped into the sampling pipe by the negative pressure generated when the first movable block is moved back. This ensures that the natural gas in different time periods can be accurately collected in the sampling pipe, thereby making the energy value of natural gas measured in each time period more accurate;

3. In the present invention, in the process of using the first movable block to discharge the natural gas remaining in the sampling pipe, the compressed natural gas enters the channel and acts on the blocking block, forcing the blocking block to move out of the channel, thereby making the fixed rod. It can extend into the gas pipe and connect the exhaust hole with the gas pipe, so as to realize the purpose of quickly discharging the natural gas remaining in the sampling pipe. The exhaust hole is blocked, and the stable connection between the second movable block and the fixed rod is ensured.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the embodiments of the present invention, and constitute a part of the present application, and do not constitute limitations to the embodiments of the present invention. In the attached image:

Fig. 1 is the structural representation of the present invention;

FIG. 2 is a schematic view of the structure in the housing of the present invention;

FIG. 3 is a schematic structural diagram of a state in the casing of the present invention;

4 is a schematic structural diagram of another state in the casing of the present invention;

Fig. 5 is the enlarged structural schematic diagram of part A in Fig. 2 of the present invention;

Fig. 6 is the enlarged structural schematic diagram of part B in Fig. 3 of the present invention;

Fig. 7 is the enlarged structural schematic diagram of C part in Fig. 4 of the present invention;

Fig. 8 is the enlarged structural schematic diagram of part D in Fig. 6 of the present invention;

FIG. 9 is a schematic diagram of a system architecture in Embodiment 3 of the present invention.

The marks in the attached drawings and the corresponding parts names:

1-Housing, 2-Gas pipe, 3-Sampling pipe, 4-Air pump, 5-First telescopic piece, 7-First movable block, 8-Fixed rod, 9-Exhaust hole, 10-Second movable block , 11-channel, 12-first elastic piece, 13-blocking block, 14-groove, 15-second telescopic piece, 16-second elastic piece, 17-limiting block, 21-second unlocking block, 22-the third elastic piece, 23-the first unlocking block.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. as a limitation of the present invention.

Example 1

As shown in FIG. 1, it also includes a casing 1, and the casing 1 is provided with a flow sensor, a pressure sensor, a temperature sensor and a flow comprehensive analysis and processing module, and the flow comprehensive analysis and processing module is used for the flow sensor, pressure sensor. , The signal collected by the temperature sensor is analyzed and processed.

In order to monitor the flow, pressure and stability of the natural gas in the gas pipe in real time, a flow sensor, a pressure sensor and a temperature sensor are respectively provided in the casing 1, and the flow sensor, pressure sensor and temperature sensor are distributed in the gas pipe. In 2, the instantaneous flow rate information of natural gas is obtained through the flow sensor, and transmitted to the comprehensive flow analysis and processing module, the real-time pressure information of natural gas is obtained through the pressure sensor, and transmitted to the comprehensive flow analysis and processing module, and the real-time temperature information of natural gas is obtained through the temperature sensor, and transmitted To the flow comprehensive analysis and processing module, the collected signals are analyzed and processed by the flow comprehensive analysis and processing module to judge whether the natural gas in the gas pipe 2 is in a normal state.

It also includes an energy calculation module, a communication module, and a touch display arranged in the housing 1, and the energy calculation module is used to transmit and receive signals to the comprehensive flow analysis and processing module, communication module, and touch display; the touch The display is also connected with a traffic comprehensive analysis and processing module, and the communication module is connected with a gateway outside the device to realize external communication of the device.

It also includes a calorific value analysis and processing module arranged in the housing 1, the output end of the calorific value analysis and processing module is respectively connected with the touch display and the energy calculation module, and the input end of the calorific value analysis and processing module is also provided with a sample. Gas processing system and standard gas processing system, the input end of the sample gas processing system is provided with a sample gas controller, the input end of the sample gas controller is also provided with a sample gas collection interface, and the sample gas controller is connected with the air pump 4 ;

The input end of the standard gas processing system is provided with a standard gas collection interface. The touch display is respectively electrically connected with the flow comprehensive analysis and processing module, the calorific value analysis and processing module, and the energy calculation module to realize two-way communication. The touch display can acquire and display the information of natural gas working condition pressure, temperature, working condition flow rate, standard condition flow rate, sample gas calorific value, etc.; it can also operate the touch screen display on site to analyze and process the flow comprehensive analysis and processing module, calorific value analysis and processing module. The module and the energy calculation module send relevant control commands to adjust the parameters within the authority.

The calibration gas enters the calorific value analysis and processing module through the calibration gas collection interface and the calibration gas processing system. The calorific value analysis and processing module analyzes the calorific value of the calibration gas, and analyzes and compares the calorific value according to the standard value of the calibration gas calorific value.

The natural gas enters the calorific value analysis and processing module sequentially through the sample gas collection interface, the sample gas controller, and the sample gas processing system, and the calorific value analysis and processing module calculates the unit calorific value of the sample gas.

The flow comprehensive analysis and processing module and the calorific value analysis and processing module respectively transmit the standard condition flow information and the calculation result of the unit calorific value of the sample gas to the energy calculation module. The above standard condition flow information is the flow rate and pressure obtained by the flow comprehensive analysis and processing module. , The temperature sensing information calculates the working condition flow, and converts it into the standard condition flow information according to the working condition flow.

The energy calculation module calculates the natural gas energy according to the obtained standard flow information and the natural gas calorific value information of the corresponding period.

In addition, the standard gas can be collected through the standard gas collection interface and the standard gas processing system and entered into the calorific value analysis and processing module. , to realize the calibration of the calorific value analysis and processing module.

This technical solution adopts the integrated design of information collection such as flow, pressure and temperature, and is equipped with distributed information processing modules. The parameters of each functional module are well matched, and the measurement is more accurate, which effectively reduces the space occupied by the device, and is convenient for users to install. The integrated design is conducive to improving customer procurement efficiency and equipment management work efficiency; and the flow, heat and energy use a sub-module step-by-step computing method, which reduces the computing load of the module, effectively improves computing speed and efficiency, and reduces computing failures .

Example 2

As shown in FIGS. 2 to 8 , on the basis of Embodiment 1, the present invention further includes a gas pipe 2 penetrating the casing 1 , and the sample gas collection interface includes a sampling pipe located in the casing 1 and communicating with the gas pipe 2 . 3. The outer wall of the sampling tube 3 is also provided with an air pump 4 that communicates with the sampling tube 3. The sampling tube 3 is provided with a fixing rod 8, and the fixing rod 8 can extend into the sampling tube 3. The fixed rod 8 is slidably provided with a first movable block 7 and a second movable block 10 whose outer diameter matches the inner diameter of the sampling pipe 3; the fixed rod 8 is also provided with an exhaust hole 9 for discharging fluid in the sampling pipe 3, When the first movable block 7 moves toward the second movable block 10 , the exhaust hole 9 can be opened.

For the natural gas energy metering device in the prior art, when measuring the natural gas in the gas pipe, since the traditional sample gas collection interface adopts the connection method between the sampling pipe and the gas pipe, when the natural gas in the gas pipe needs to be collected, use the setting The gas pump in the gas pump generates suction in the sampling pipe, and sucks the natural gas in the gas pipe into the sampling pipe for subsequent energy analysis. However, when sampling natural gas in different periods, part of the sample gas collected in the previous period will always remain in the sampling pipe. , resulting in the collection of natural gas in the gas pipe in a later period, the natural gas collected in the two periods will be mixed together, resulting in an error in measuring the energy value of the natural gas in this period. A first movable block 7 and a second movable block 10 are arranged in the tube 3, and both the first movable block 7 and the second movable block 10 can move in the sampling tube 3 along the axial direction of the sampling tube 3, and in the sampling tube 3 There are also fixed rods 8 slidably connected with the first movable block 7 and the second movable block 10 respectively. The fixed rod 8 is also provided with an exhaust hole 9 for discharging the fluid in the sampling pipe 3. When the natural gas in , it is possible to compress the natural gas remaining in the sampling pipe 3 in the previous period, and at the same time the exhaust hole 9 on the fixed rod 8 is in an open state, so the first movable block 7 can compress the natural gas remaining in the sampling pipe 3. It is quickly discharged into the gas pipe 2 from the exhaust hole 9, thereby realizing the purpose of discharging the natural gas remaining in the sampling pipe 3 during the natural gas collection process in the previous period.

When the natural gas in the gas pipe 2 is collected, the fixed rod 8 can move in the sampling pipe 3 along its axial direction. Therefore, when the first movable block 7 and the second movable block 10 are moved closer together, there will be residues in the sampling pipe 3 . After all the natural gas in the sampling pipe 3 is exhausted, the first movable block 7 and the second movable block 10 located close to the fixed rods 8 are extended into the gas pipe 2 by using the fixed rods 8 provided, and then The first movable block 7 is retracted into the sampling pipe 3, and in the process of returning the first movable block 7 to the sampling pipe 3, the negative pressure generated can suck the natural gas in the gas pipe 2 during the period into the sampling pipe 3, so as to realize In order to quickly collect natural gas in this period, at the same time, when the natural gas collection in this period is completed, the second movable block 10 is also returned to the sampling pipe 3, and the nozzle of the sampling pipe 3 is blocked, which ensures that the The natural gas in different time periods can be accurately collected in the sampling pipe 3, so that the energy value of the natural gas measured in each time period is more accurate.

It also includes a first telescopic piece 5 arranged in the sampling tube 3, one end of the first telescopic piece 5 is connected with the inner wall of the housing 1, and the other end is connected with the first movable block 7 along the axial direction of the sampling tube 3; the fixed The rod 8 is inserted into the first telescopic element 5 along the axial direction of the first telescopic element 5 .

The provided first telescopic member 5 is used to drive the normal movement of the first movable block 7 in the sampling tube 3 .

The first telescopic element 5 is also provided with a second telescopic element 15, one end of the second telescopic element 15 is connected with the inner top surface of the first telescopic element 5, and the other end is connected with the fixing rod 8; The member 5 and the second telescopic member 15 are both bellows, and are respectively connected with the pump body through the gas pipe.

The provided second telescopic piece 15 is used to drive the normal movement of the fixed rod 8 in the sampling tube 3. The first telescopic piece 5 and the second telescopic piece 15 provided in this technical solution are both bellows pipes, which pass through the air pipe and are connected to the sampling tube 3. The pump body in the casing is connected, and the first telescopic piece 5 and the second telescopic piece 15 are filled with gas by the provided pump body. Since the bellows can expand and stretch along its axial direction after being inflated, the first telescopic piece 15 can be expanded and stretched by using the provided first telescopic piece. The component 5 and the second telescopic component 15 can respectively adjust the positions of the first movable block 7 and the fixed rod 8 in the sampling tube 3 .

The fixing rod 8 is also provided with a channel 11, one end of the channel 11 is communicated with the exhaust hole 9, and the other end is communicated with the side wall of the fixing rod 8; the second movable block 10 is provided with an inner diameter and the fixing rod 8 A connecting hole with a matching outer diameter, the fixing rod 8 is inserted into the connecting hole, the inner wall of the connecting hole is provided with a first accommodating cavity, and the first accommodating cavity is provided with a first elastic member 12 and a blocking block 13, The elastic force generated by the first elastic member 12 can push the blocking block 13 to be inserted into the channel 11 and block the channel 11 .

In order to ensure that when the first telescopic member 5 drives the first movable block 7 to move toward the second movable block 10, the exhaust hole 9 close to the lower end of the fixed rod 8 can be opened, and at the same time to ensure that the first movable block 7 is moved toward the second movable block 10. When the block 7 moves away from the second movable block 10, the exhaust hole 9 is in a blocked state, so the fixed rod 8 is provided with a channel 11 with an inverted "T" structure. The air hole 9 is in a connected state, and the other two ends of the channel 11 are connected to both sides of the fixed rod 8 respectively. When the blocking block 13 on the inner wall of the connecting hole of the second movable block 10 is flush with the channel 11, the first elastic The blocking block 13 is pushed to be inserted into the channel 11 under the action of the valve 12 to block the channel 11 , thereby realizing the blocking of the exhaust hole 9 .

When the first movable block 7 moves toward the second movable block 10, the first movable block 7 compresses the natural gas remaining in the sampling pipe 3, forcing the natural gas to enter the channel 11 through the exhaust hole 9, and The blocking block 13 acting on the channel 11 gradually increases as the pressure generated by the first movable block 7 in the process of moving, when the pressure is greater than the elastic force of the first elastic member 12, the blocking block 13 is forced to compress the first block 13. An elastic member 12 is retracted into the first accommodating cavity. At this time, the fixing rod 8 removes the restraining force of the blocking block 13 on it, and the second telescopic member 15 is a corrugated tube. When the first movable block 7 is in the The air pressure generated by the compressed natural gas during the movement of the sampling pipe 3 can force the fixed rod 8 to actively move toward the gas pipe 2, and cause the channel 11 on the fixed rod 8 to be dislocated from the first accommodating cavity, and finally the two fixed rods 8 are displaced. The channel 11 on the side extends into the gas pipe 2, realizing the communication between the gas pipe 2 and the exhaust hole 9, so that the natural gas remaining in the sampling pipe 3 can finally enter the gas pipe through the exhaust hole 9 and the channel 11 in sequence. 2, discharge the gas remaining in the sampling tube 3 sampled in the previous period.

When the first movable block 7 and the second movable block 10 are close together, the second movable block 10 blocks the channel 11, that is, under the action of the second telescopic member 15, the fixed rod 8 can be pulled to retract back. When the channel 11 on the fixing rod 8 is retracted to be flush with the blocking block 13, the blocking block 13 is reinserted into the channel 11 under the action of the first elastic member 12, and the set blocking block 13 is used to The passage 11 is blocked, and the second movable block 10 is re-fixed on the fixing rod 8, so as to ensure that the exhaust hole 9 is in a closed state.

There are also second accommodating chambers on both sides of the inner wall of the sampling tube 3, and the second accommodating chambers are provided with a second elastic member 16 and a limit block 17; A third accommodating cavity is provided. When the third accommodating cavity on the second movable block 10 moves to be flush with the second accommodating cavity, the elastic force generated by the second elastic member 16 can push the limiting block 17 to be inserted into the third accommodating cavity. .

In this technical solution, when the exhaust hole 9 needs to be communicated with the gas pipe 2, the second movable block 10 needs to be separated from the fixed rod 8, and the second movable block 10 also needs to be fixed with the inner wall of the sampling pipe 3, so that the To ensure that the fixed rod 8 can smoothly move on the second movable block 10, a second elastic member 16 and a limit block 17 are arranged on the inner wall of the sampling tube 3, and the limit block is pushed by the elastic force generated by the second elastic member 16. 17 is inserted into the third accommodating cavity of the second movable block 10 to realize the fixation between the second movable block 10 and the adopting tube 3 .

The end of the first movable block 7 facing the second movable block 10 is provided with a first unlocking block 23 , the end of the first unlocking block 23 facing the second movable block 10 is provided with a gap, and the gap is provided with a gap. The third elastic member 22 and the second unlocking block 21; the end face of the second movable block 10 facing the first movable block 7 is provided with a groove 14, and the first unlocking block 21 can be inserted into the groove 14, and The groove 14 communicates with the third accommodating cavity; the elastic force of the third elastic member 22 is greater than that of the second elastic member 16 .

When the natural gas in the gas pipe 2 needs to be sampled, in order to ensure that the second movable block 10 can be separated from the adopting pipe 3 smoothly, the first movable block 7 is also provided with a first unlocking block 23 and a third elastic member 22 and the second unlocking block 21, when the first moving block 7 is close to the second moving block 10, the first unlocking block 23 on the first moving block 7 can be inserted into the groove 14 on the second moving block 10, and the When the first movable block 7 and the second movable block 10 are completely close together, the set second unlocking block 21 is flush with the limiting block 17, and under the action of the third elastic member, the second unlocking block 21 is used to lock the limiting block 21. The block 17 is pushed back into the second accommodating cavity, so that the restraint of the second movable block 10 by the limiting block 17 can be removed, so that the second movable block 10 can smoothly follow the fixed rod 8 to move in the sampling tube 3 at this time. .

The limiting block 17 and the second unlocking block 21 are both conical structures, and the conical tips of the limiting block 17 and the second unlocking block 21 face each other.

Since the provided second unlocking block 21 needs to return the limiting block 17 to the second accommodating cavity, when the first movable block 7 moves back away from the second movable block 10, in order to ensure that it is located in the third accommodating cavity The second unlocking block 21 can be moved out of the groove 14 of the second movable block 10 smoothly, so the second unlocking block 21 is set as a conical structure, so that the second unlocking block 21 is moved upwards. The tapered surface of the unlocking block 21 forces the second unlocking block 21 to retract toward the third elastic member 22, so that the second unlocking block 21 can smoothly pass through the groove 14;

Similarly, when the first unlocking block 23 on the first movable block 7 is inserted into the groove 14, the upper surface of the second movable block 10 acts on the conical surface of the second unlocking block 21, forcing the second unlocking block 21 The third elastic member 22 is compressed so as to be smoothly inserted into the groove 14 .

When the fixed rod 8 drives the second movable block 10 and the first movable block 7 to extend into the gas pipe 2 together, the first movable block 7 and the second movable block 10 need to be returned to the sampling pipe 3 in turn. In order to ensure that the first movable block 7 and the second movable block 10 can pass the limit block 17 smoothly, the limit block 17 is also set into a conical structure, and the second movable block 10 and the first movable block 7 are used to act on the limit. the conical surface of the block 17, so that the limiting block 17 is retracted into the second accommodating cavity.

In the process of using the first movable block 7 to discharge the natural gas collected in the sampling pipe 3 in the previous period, when the first movable block 7 and the second movable block 10 are completely close to each other, although the natural gas in the sampling pipe 3 is completely Although the miscellaneous gas is completely exhausted, a part of the miscellaneous gas still stays in the exhaust hole 9 and the channel 11, and this part of the miscellaneous gas cannot be exhausted. The negative pressure generated during the moving process will preferentially collect the miscellaneous gas remaining in the exhaust hole 9 and the channel 11 into the sampling pipe, which affects the sampling accuracy. Direction valve (not shown in the figure), so that in the process of discharging the miscellaneous gas in the sampling pipe 3, the gas in the sampling pipe 3 can only enter the gas pipe 2 through the exhaust hole 9 and the channel 11 through the one-way valve in turn. In order to realize the discharge of miscellaneous gas, and when it is necessary to collect natural gas, first move the fixed rod 8 back, use the blocking block 13 to re-block the channel 11, and then connect the first movable block 7 and the second movable block 7. The movable block 10 extends into the gas pipe 2 together, because the blocking block 13 on the second movable block 10 blocks the passage 11, and under the action of the one-way valve located at the exhaust hole 9, at this time The channel 11 and the exhaust hole 9 are in a blocked state, so the gas remaining in the channel 11 and the exhaust hole 9 cannot be sucked into the sampling pipe 3 during the process of the first movable block 7 returning to the sampling pipe 3 , and the natural gas in the gas pipe 2 in this period is quickly sucked into the sampling pipe 3, which realizes the rapid sampling of the natural gas in a certain period.

In addition, in this technical solution, the first movable block 7 and the second movable block 10 are inserted into the gas pipe 2 together. Compared with the channel 11 , the diameter of the natural gas entering the gas pipe 3 is enlarged, and the collection efficiency of natural gas is improved.

At the same time, in this technical solution, when the gas in the pipe 3 is passed into the exhaust hole 9, under the action of the air pressure, the blocking block 13 in the channel 11 is forced to retract into the first accommodating cavity, so that the fixed The rod 8 can extend into the gas pipe 2 to connect the channel 11 with the gas pipe 2, and after the exhaust is completed, the fixed rod 8 can be moved back again, and the blocking block 13 is used to block the channel 11 on the one hand. Blocking, the other side can re-fix the second movable block 10 with the fixed rod 8 to ensure that the second movable block 10 can be inserted into the gas pipe 2 along with the fixed rod 8. The reason why this technical solution adopts the above method , because there are certain solid impurities in the natural gas in some gas pipes 2, such as sediment and rock particles, if the channel 11 is always in the state of communication with the gas pipe 2 during the use process, after a long time, the solid in the natural gas will Impurities easily enter the channel 11, which is easy to cause blockage of the channel 11, resulting in the subsequent failure to discharge the miscellaneous gas in the sampling tube 3 through the channel 11. Therefore, this technical solution needs to discharge the miscellaneous gas in the sampling tube 3. At this time, the fixing rod 8 can automatically extend into the gas pipe 2 to realize the communication between the gas pipe 2 and the channel 11. After the exhaust gas is completed, the fixing rod 8 can be retracted to remove the channel 11 from the gas pipe 2. It is retracted into the second movable block 10, so as to avoid the situation that the channel 11 is always exposed in the gas pipe 2, which may easily cause the channel 11 to be blocked for a long time.

Example 3

As shown in Figure 9, the step-by-step computing natural gas energy metering IoT system includes a user platform, a service platform, a management platform, a sensor network platform and a sensor control platform that interact in sequence;

The sensing control platform is the above-mentioned natural gas energy metering device, and the sensing control platform transmits the acquired sensing information to the management platform through the sensing network platform;

The management platform includes an energy metering management system, the energy metering management system comprehensively analyzes and processes the received perception information, transmits user demand information to the user platform through the service platform, and transmits user demand information to the sensor network platform through the sensor network platform. The control platform issues control instructions. This embodiment realizes the intelligent management and operation of natural gas energy measurement by establishing an Internet of Things operation system.

The specific embodiments described above further describe the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A step-by-step arithmetic type natural gas energy metering device, characterized in that it comprises a casing (1), and the casing (1) is provided with a calorific value analysis and processing module, a flow comprehensive analysis and processing module and an energy calculation module; The heat generation analysis and processing module is used for calculating the unit heat value of natural gas, and transmits the calculation result to the energy calculation module; The flow comprehensive analysis and processing module is used to obtain natural gas perception information, calculate and obtain the standard condition flow information and transmit it to the energy calculation module; The energy calculation module calculates the energy of the natural gas according to the obtained standard flow information and the unit calorific value information of the natural gas in the corresponding period. 2 . The step-by-step arithmetic natural gas energy metering device according to claim 1 , further comprising a touch display, a flow sensor, a pressure sensor, and a temperature sensor, and the flow comprehensive analysis and processing module is used to measure the flow sensor, The signals collected by the pressure sensor and temperature sensor are analyzed and processed, the flow rate of natural gas is calculated, and the conversion to the standard flow rate is realized; The touch display is respectively connected with the flow comprehensive analysis and processing module, the calorific value analysis and processing module, and the energy calculation module, and can send control instructions to the flow comprehensive analysis and processing module, the calorific value analysis and processing module, and the energy calculation module to perform the parameter adjustment within the authority. adjust. 3. The step-by-step arithmetic natural gas energy metering device according to claim 1, wherein the input end of the calorific value analysis and processing module is provided with a sample gas processing system and a standard gas processing system, and the sample gas processing system The input end of the sample gas controller is also provided with a sample gas controller, the input end of the sample gas controller is also provided with a sample gas acquisition interface, and the input end of the standard gas processing system is also provided with a standard gas acquisition interface; The standard gas processing system is used to remove impurities from the collected standard gas, and the calorific value analysis and processing module calculates the calorific value of the standard gas after removing impurities, and compares the calculation result with the standard value of the standard gas calorific value. Carry out comparison to realize the calibration of the calorific value analysis and processing module; the sample gas processing system is used to remove impurities from the collected natural gas, and the calorific value analysis and processing module calculates the unit calorific value of the natural gas after the removal of impurities, And transmit the calculation result to the energy calculation module. 4 . The step-by-step arithmetic natural gas energy metering device according to claim 1 , further comprising a communication module, and the communication module is communicatively connected with the energy calculation module to realize the step-by-step arithmetic natural gas energy metering device. 5 . External communication. 5. The step-by-step arithmetic natural gas energy metering device according to claim 3, characterized in that it further comprises a gas pipe (2) penetrating the casing (1), and the sample gas collection interface comprises a gas pipe (2) arranged in the casing (1). (1) A sampling pipe (3) in communication with the gas pipe (2), an air pump (4) communicating with the sampling pipe (3) is also provided on the outer wall of the sampling pipe (3), and the sampling pipe ( 3) A fixing rod (8) is provided inside, the fixing rod (8) can extend into the sampling tube (3), and the fixing rod (8) is slidably provided with an outer diameter matching the inner diameter of the sampling tube (3) The first activity block (7) and the second activity block (10) of ; The fixed rod (8) is also provided with an exhaust hole (9) for discharging the fluid in the sampling pipe (3), and when the first movable block (7) moves in the direction of the second movable block (10), The vent hole (9) can be opened. 6 . The step-by-step arithmetic natural gas energy metering device according to claim 5 , further comprising a first telescopic piece ( 5 ) arranged in the sampling pipe ( 3 ), the first telescopic piece ( 5 ) One end is connected with the inner wall of the casing (1), and the other end is connected with the first movable block (7) along the axial direction of the sampling pipe (3); The fixing rod (8) is inserted into the first telescopic element (5) along the axial direction of the first telescopic element (5); A second telescopic element (15) is also arranged in the first telescopic element (5), one end of the second telescopic element (15) is connected with the inner top surface of the first telescopic element (5), and the other end is connected with the fixing rod (8) Connection; The first telescopic element (5) and the second telescopic element (15) are both bellows pipes, and are respectively connected to the pump body through air pipes. 7 . The step-by-step arithmetic natural gas energy metering device according to claim 5 , wherein a channel ( 11 ) is further provided in the fixed rod ( 8 ), and one end of the channel ( 11 ) is connected to the exhaust hole ( 7 . 9) communicated, and the other end is communicated with the side wall of the fixing rod (8); The second movable block (10) is provided with a connecting hole whose inner diameter matches the outer diameter of the fixing rod (8), the fixing rod (8) is inserted into the connecting hole, and the inner wall of the connecting hole is provided with a first connecting hole. an accommodating cavity, the first accommodating cavity is provided with a first elastic member (12) and a blocking block (13), the elastic force generated by the first elastic member (12) can push the blocking block (13) to be inserted into the channel (11) ) and block the channel (11). 8 . The step-by-step arithmetic natural gas energy metering device according to claim 5 , wherein a second accommodating cavity is further provided on both sides of the inner wall of the sampling pipe ( 3 ). A second elastic member (16) and a limiting block (17) are provided; Both sides of the second movable block (10) are provided with third accommodating cavities, and when the third accommodating cavity on the second movable block (10) moves to be flush with the second accommodating cavity, the second elastic member (16) ) can push the limiting block (17) to be inserted into the third accommodating cavity. 9. The step-by-step arithmetic natural gas energy metering device according to claim 8, characterized in that, a first unlocking block ( 23), the end of the first unlocking block (23) facing the direction of the second movable block (10) is provided with a gap, and the gap is provided with a third elastic member (22) and a second unlocking block (21); The end surface of the second movable block (10) facing the direction of the first movable block (7) is provided with a groove (14), the first unlocking block (21) can be inserted into the groove (14), and the groove (14) communicate with the third accommodating cavity; The elastic force of the third elastic member (22) is greater than that of the second elastic member (16). 10. A step-by-step computing natural gas energy metering Internet of Things system, characterized in that it includes a user platform, a service platform, a management platform, a sensor network platform, and a sensor control platform that interact in sequence; The sensing control platform is the natural gas energy metering device according to any one of claims 1 to 9, and the sensing control platform transmits the acquired sensing information to the management platform through the sensing network platform; The management platform includes an energy metering management system, the energy metering management system comprehensively analyzes and processes the received perception information, transmits user demand information to the user platform through the service platform, and transmits user demand information to the sensor network platform through the sensor network platform. The control platform issues control instructions.

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