CN210689731U - Wedge type gas metering device - Google Patents
Wedge type gas metering device Download PDFInfo
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- CN210689731U CN210689731U CN201921573880.6U CN201921573880U CN210689731U CN 210689731 U CN210689731 U CN 210689731U CN 201921573880 U CN201921573880 U CN 201921573880U CN 210689731 U CN210689731 U CN 210689731U
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Abstract
The utility model discloses a wedge-type gas metering device, which comprises a measuring pipe, an instrument flange, a high-pressure taking pipe, a low-pressure taking pipe and a wedge-type throttling piece, and is characterized in that the measuring pipe is also provided with a pressure sensing control device, a temperature sensing control device and a flow sensing control device, the three sensing control devices are all electrically connected with an external display device, the pressure sensing control device and the temperature sensing control device are respectively positioned at two sides of the high-pressure taking pipe and the low-pressure taking pipe, and the flow sensing control device is arranged on the high-pressure taking pipe and the low-pressure taking pipe; the wedge-shaped throttling element is of a V-shaped symmetrical structure, and the pointed head of the wedge-shaped throttling element is arc-shaped. The scheme meets the requirements of real-time temperature and pressure compensation calculation under the conditions of high temperature and high pressure, strong corrosivity and unstable working condition of a dirty medium, and ensures accurate measurement and accurate measurement; the device has the advantages of high integration degree and compact structure; the measured data can be stored for a long time and called in real time, so that the data analysis of a user and the process improvement are facilitated.
Description
Technical Field
The utility model relates to a flowmeter technical field specifically is a wedge type gas metering device.
Background
The gas media are various in types, have different physical properties, and have strong corrosivity and toxicity, such as chlorine, hydrogen chloride gas, hydrogen sulfide gas and the like; the impurities are more such as dirty gas containing solid particles and dust; the field process parameters are various and changeable, such as high temperature and high pressure, steam which changes along with seasonal temperature, pressure and flow, natural gas and coal gas of which the components change along with time, and the like. Aiming at the characteristics of the gas medium, instrument manufacturers develop various gas flow meters and gas metering devices, which are suitable for the metering requirements of different occasions and media, but the application range of the gas flow meters and the gas metering devices is limited to a certain extent. The vortex shedding flowmeter and the precession vortex flowmeter which are representative products such as a speed type gas flowmeter are not suitable for measuring the flow of dirty gas with high temperature, high pressure, strong corrosivity, small flow, large caliber and large caliber; the measurement accuracy of a standard orifice plate, a nozzle, a Venturi tube and the like of the throttling device cannot meet the measurement requirement, wherein the throttling device has high pressure loss and poor energy-saving effect; when the dirty medium is measured, the pressure guide pipeline is easy to block; the Coriolis gas flowmeter is high in manufacturing cost, is difficult to manufacture by special corrosion-resistant materials, and is not suitable for low-pressure, low-density, high-temperature and dirty gas. Meanwhile, most instruments cannot realize real-time compensation calculation of temperature and pressure, and when the technological parameters of the gas medium are seriously deviated from the design parameters, the measurement accuracy is inevitably seriously reduced. In order to realize temperature and pressure compensation calculation, a pressure sensor and a temperature sensor are usually required to be additionally arranged on a measuring pipeline, and pressure, temperature and flow signals are transmitted to a control system to carry out temperature and pressure compensation calculation so as to obtain a relatively accurate flow measurement value, so that the workload is large and cumbersome, and the user cost is greatly increased. Along with the society more and more attach importance and stricter to the measurement, the management and control of gas energy, the urgent need on the market can satisfy simultaneously high temperature and high pressure resistant, anticorrosive, the measurement degree of accuracy is high, application medium wide range, be particularly useful for dirty gas, real-time temperature pressure compensation calculates, the gas metering device of integrated design, can long-term storage various measured data, real-time the transfer, convenience of customers carries out data analysis, improves technology, improves production efficiency, reduces purchase, maintenance cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wedge type gas metering device has solved the problem that above-mentioned background art provided.
In order to achieve the above object, the utility model provides a following technical scheme: a wedge type gas metering device comprises a measuring pipe, instrument flanges arranged at two ends of the measuring pipe, a high-pressure taking pipe and a low-pressure taking pipe which are arranged on a pipe body of the measuring pipe, and a wedge type throttling piece arranged in the measuring pipe, and is characterized in that the measuring pipe is also provided with a pressure sensing control device, a temperature sensing control device and a flow sensing control device, the three sensing control devices are all electrically connected with an external display device, the pressure sensing control device and the temperature sensing control device are respectively positioned at two sides of the high-pressure taking pipe and the low-pressure taking pipe, and the flow sensing control device is arranged on the high-pressure taking pipe and the low; the wedge-type throttling element is of a V-shaped symmetrical structure, and the pointed head of the wedge-type throttling element is arc-shaped.
Preferably, the pressure sensing control device comprises a pressure transmitter, a first mounting seat, a stop valve and a pressure tapping pipe which are sequentially connected from top to bottom, and the pressure tapping pipe is arranged on one side of the upstream of the wedge-type throttling element.
Preferably, the temperature sensing control device comprises a temperature sensor or a temperature transmitter and a second mounting seat which are connected in sequence, and the second mounting seat is arranged on one side of the downstream of the wedge-shaped throttling element.
Preferably, the temperature sensor is a three-wire PT100 platinum thermistor temperature sensor.
The temperature transmitter is specifically a PT100 platinum thermal resistance temperature transmitter.
Preferably, the flow sensing control device comprises a double-flange differential pressure transmitter which is respectively connected with the high-pressure sampling pipe and the low-pressure sampling pipe through flanges.
Preferably, the external display device is an integrated external display device, and is one of a flow integrating meter or a flow computer.
Preferably, the external display device is a split external display device, and preferably a distributed control system DCS industrial control computer.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model discloses in, through pressure sensing controlling means, temperature sensing controlling means and flow sensing controlling means and outside display device's use, can carry out real-time control to temperature, the unstable gaseous medium of pressure, can carry out temperature pressure compensation in real time and calculate, the gas flow measurement that the measurement degree of accuracy is high is applicable to dirty gaseous medium if the gas flow measurement that contains solid particle, dust gas.
2. The measured parameter data can be stored and called for a long time, and big data are provided for technical analysis and process improvement of users.
3. The utility model discloses, integrated design, the installation is maintained conveniently, can export multiple signal, multiple communication mode, on-the-spot measurement of being convenient for, management and control.
4. Through reasonable selection (such as flange, survey buret, voussoir, pressure pipe, changer diaphragm etc.) of each component part material, wall thickness, pressure rating etc. for the instrument is applicable to high temperature high pressure, the strong gas flow measurement of corrosivity.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the pressure sensing control device of the present invention;
fig. 3 is a schematic structural view of the temperature sensing control device of the present invention.
In the figure: 11 measuring tubes, 12 instrument flanges, 13 high-pressure tapping pipes, 14 low-pressure tapping pipes, 15 wedge type throttling parts, 2 pressure sensing control devices, 21 pressure transmitters, 22 first installation seats, 23 stop valves, 24 pressure tapping pipes, 3 flow sensing control devices, 31 double-flange differential pressure transmitters, 4 temperature sensing control devices, 41 temperature sensors or temperature transmitters, 42 second installation seats and 5 external display devices.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the utility model provides a wedge type gas metering device, including measuring pipe 11, set up at the instrument flange 12 of measuring pipe 11 both ends, set up high pressure sampling pipe 13 and low pressure sampling pipe 14 on measuring pipe 11 body and set up the wedge type throttle 15 inside measuring pipe 11, its characteristics are, still be provided with pressure sensing controlling means 2, temperature sensing controlling means 4 and flow sensing controlling means 3 on measuring pipe 11, three sensing controlling means all are connected with external display device 5 electricity, pressure sensing controlling means 2 and temperature sensing controlling means 4 are located the both sides of high pressure sampling pipe 13 and low pressure sampling pipe 14 respectively, flow sensing controlling means 3 sets up on high pressure sampling pipe 13 and low pressure sampling pipe 14; the wedge-shaped throttling element 15 is of a V-shaped symmetrical structure, and the tip part of the wedge-shaped throttling element is arc-shaped.
Through instrument flange 12, survey buret 11, high pressure sampling pipe 13, wedge type throttling element 15, low pressure sampling pipe 14, can carry out material, flange form, pipeline wall thickness, throttling element size according to medium rerum natura parameter, technological parameter etc. and rationally select for use, satisfy normal atmospheric temperature differential pressure (board-like flat welding flange form), high temperature high pressure (neck butt welding flange form), strong corrosivity, dirty gaseous medium's measurement.
The wedge-shaped throttling element 15 is designed in a V-shaped structure and is in V-shaped bidirectional symmetry, so that a detention area is eliminated, granular impurities and suspended matters in fluid can smoothly pass through the wedge-shaped throttling element 15, the blockage phenomenon is avoided, the left and right sides are completely symmetrical, the bidirectional flow measurement can be realized, the structure is safer, the impact resistance is improved, and the service life is longer. In addition, the tip of the wedge-shaped throttling piece 15 adopts an arc design, the wear resistance is obviously improved, the size and the throttling area of the throttling piece can be kept unchanged for a long time, and no movable part or easily damaged part is arranged, so that the measurement stability, the accuracy and the repeatability of the metering device are greatly improved, the range ratio of the instrument (up to 10:1) is expanded, and the instrument can be used for precise metering and trade settlement.
Preferably, the pressure sensing control device 2 comprises a pressure transmitter 21, a first mounting seat 22, a stop valve 23 and a pressure tapping pipe 24 which are sequentially connected from top to bottom, and the pressure tapping pipe 24 is arranged on one side of the upstream of the wedge-shaped throttling piece 15.
The utility model discloses in, pressure pipe 24 specifications choose DN50 pipe for use usually, and the internal diameter is big, and the medium does not produce blocking phenomenon.
The pressure sensing control device 2 is arranged on the measuring pipe 11 and is positioned on the upstream side of the wedge-shaped throttling piece 15, the distance from the throttling piece is generally required to be not less than 3DN (nominal diameter of DN sensor), and the influence of medium flow state change caused by the installation of a pressure unit on the flow measurement accuracy is eliminated. The pressure transmitter 21 is preferably a brand product such as the pressure transmitter 21 of the EJA530E series and the Rosimon 3051T series of the Yanghe, so that the stability, the reliability and the accuracy of the work are improved.
Preferably, the temperature sensing and controlling device 4 comprises a temperature sensor or a temperature transmitter 41 and a second mounting seat which are connected in sequence, and the second mounting seat is arranged on the downstream side of the wedge-shaped throttling element 15.
Preferably, the temperature sensor is a three-wire PT100 platinum thermistor temperature sensor.
The temperature transmitter is specifically a PT100 platinum thermal resistance temperature transmitter.
The temperature sensor is preferably a three-wire PT100 platinum thermistor temperature sensor (A-grade or B-grade, outputting resistance signals), and the temperature transmitter is preferably a PT100 platinum thermistor temperature transmitter (0.5-grade, 4-20mA current signals), so that the stability, reliability and accuracy of the measurement work are ensured. For high-temperature and high-pressure media, the mounting seat can be in a form of welding a whole drilling conical pipe.
Preferably, the flow sensing control device 3 includes a double-flange differential pressure transmitter 31, which is connected to the high-pressure sampling pipe 13 and the low-pressure sampling pipe 14 through flanges.
Flange type valves (ball valves, gate valves and stop valves 23) can be additionally arranged on connecting flanges of the double-flange differential pressure transmitter 31, the high-pressure sampling pipe 13 and the low-pressure sampling pipe 14. The double-flange differential pressure transmitter 31 collects the static pressure at the high-pressure and low-pressure sampling pipes 14 to obtain the upstream and downstream differential pressure values, and calculates the instantaneous medium flow value according to the working principle of a differential pressure flowmeter (wedge-shaped). The flange type valve realizes the on-off of the flow pipeline and the differential pressure transmitter. The double-flange differential pressure transmitter 31 preferably selects products such as the double-flange differential pressure transmitter 31 of the cross river EJA118E series and the Rosimon 3051DP/1199 series, and ensures the stability, reliability and accuracy of the measurement work.
Preferably, the external display device 5 is an integrated external display device, and is one of a flow integrating meter and a flow computer.
Preferably, the external display device 5 is a split external display device, and preferably a distributed control system DCS industrial control computer.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A wedge-type gas metering device comprises a measuring pipe (11), instrument flanges (12) arranged at two ends of the measuring pipe (11), a high-pressure taking pipe (13) and a low-pressure taking pipe (14) which are arranged on a pipe body of the measuring pipe (11), and a wedge-type throttling part (15) arranged inside the measuring pipe (11), and is characterized in that a pressure sensing control device (2), a temperature sensing control device (4) and a flow sensing control device (3) are further arranged on the measuring pipe (11), the three sensing control devices are all electrically connected with an external display device (5), the pressure sensing control device (2) and the temperature sensing control device (4) are respectively positioned at two sides of the high-pressure taking pipe (13) and the low-pressure taking pipe (14), and the flow sensing control device (3) is arranged on the high-pressure taking pipe (13) and the low-pressure taking pipe (14); the wedge-shaped throttling element (15) is of a V-shaped symmetrical structure, and the pointed end of the wedge-shaped throttling element is arc-shaped.
2. A wedge gas metering device in accordance with claim 1, wherein: pressure sensing controlling means (2) are including pressure transmitter (21), first mount pad (22), stop valve (23) and the pressure pipe (24) of connecting gradually from top to bottom, pressure pipe (24) are set up in the upper reaches one side of wedge-type throttling element (15).
3. A wedge gas metering device in accordance with claim 1, wherein: the temperature sensing control device (4) comprises a temperature sensor or a temperature transmitter (41) and a second mounting seat (42) which are sequentially connected, and the second mounting seat (42) is arranged on one side of the downstream of the wedge-shaped throttling element (15).
4. A wedge gas metering device in accordance with claim 3, wherein: the temperature sensor is specifically a three-wire PT100 platinum thermistor temperature sensor.
5. A wedge gas metering device in accordance with claim 3, wherein: the temperature transmitter is specifically a PT100 platinum thermal resistance temperature transmitter.
6. A wedge gas metering device in accordance with claim 1, wherein: the flow sensing control device (3) comprises a double-flange differential pressure transmitter (31) which is respectively connected with a high-pressure sampling pipe (13) and a low-pressure sampling pipe (14) through flanges.
7. A wedge gas metering device in accordance with claim 1, wherein: the external display device (5) is an integrated external display device and is one of a flow integrating instrument or a flow computer.
8. A wedge gas metering device in accordance with claim 1, wherein: the external display device (5) is a split external display device, and is a Distributed Control System (DCS) industrial control computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921573880.6U CN210689731U (en) | 2019-09-20 | 2019-09-20 | Wedge type gas metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921573880.6U CN210689731U (en) | 2019-09-20 | 2019-09-20 | Wedge type gas metering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210689731U true CN210689731U (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921573880.6U Expired - Fee Related CN210689731U (en) | 2019-09-20 | 2019-09-20 | Wedge type gas metering device |
Country Status (1)
| Country | Link |
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| CN (1) | CN210689731U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111854869A (en) * | 2020-08-22 | 2020-10-30 | 承德菲时博特自动化设备有限公司 | Precession vortex differential pressure type mass flowmeter |
| CN113819962A (en) * | 2021-10-19 | 2021-12-21 | 承德菲时博特自动化设备有限公司 | Double-wedge type flowmeter |
-
2019
- 2019-09-20 CN CN201921573880.6U patent/CN210689731U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111854869A (en) * | 2020-08-22 | 2020-10-30 | 承德菲时博特自动化设备有限公司 | Precession vortex differential pressure type mass flowmeter |
| CN113819962A (en) * | 2021-10-19 | 2021-12-21 | 承德菲时博特自动化设备有限公司 | Double-wedge type flowmeter |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200605 Termination date: 20210920 |