CN215256455U

CN215256455U - Inter-cooling control system for bench experiments

Info

Publication number: CN215256455U
Application number: CN202121521192.2U
Authority: CN
Inventors: 沙宣宝; 俞奎; 赵长金; 毛开清; 张海峰
Original assignee: Anhui Hualing Automobile Co Ltd
Current assignee: Anhui Hanma Engine Co ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2021-12-21
Anticipated expiration: 2031-07-05

Abstract

The utility model discloses an inter-cooling control system for rack experiments, including air cooler (5), connect the intercooler circulation circuit of engine (6) and air cooler (5), connect air cooler (5) and circulating water system's cooling water circulation circuit, cooling water circulation circuit has two at least parallelly connected branch road pipelines on the water inlet pipeline, all establishes ties on every branch road and has filter (2), and all is provided with valve (1) at the front end and the rear end of filter (2). The inter-cooling control system for the bench test can be used for pre-judging in advance, and the inter-cooling control device can be quickly put into use through a quick switching pipeline, so that the continuity of the test is guaranteed.

Description

Inter-cooling control system for bench experiments

Technical Field

The utility model relates to a performance rack field in engine laboratory especially relates to a well cooling control system for rack experiment.

Background

The performance bench of the engine laboratory can be used for simulating various operating conditions of the engine to obtain and verify various important parameters of the operation of the engine, and correcting and adjusting the control parameters of the ECU, so that more economic, environment-friendly and reliable operating performance is obtained. The intercooling temperature control device is special equipment for an engine bench experiment and is used for simulating an air cooler of a supercharged intercooling engine, and a cooling circulation system of the intercooling temperature control device uses circulating cooling water which is supplied in a centralized mode. As the racks of the common engine laboratory are more, the requirement of circulating water is large, and the centralized supply mode is mostly adopted for recycling in view of saving. But the water quality is inevitably deteriorated after a long time. The problem that how to effectively judge whether the filter blocks up and take effectual emergency measure to deal with is that the laboratory needs to be solved because of the condition that the filter screen blockked up in the equipment water supply line leads to experimental data deviation experiment to break off occasionally in the experimentation.

The intercooling temperature control device is special equipment for engine bench experiments and is used for simulating an air cooler of a supercharged intercooling engine, air combusted by the engine is compressed by a turbocharger of the engine and then is changed into high-temperature and high-pressure air, and the temperature of the air is controlled to be in a constant range after the air is controlled by the intercooling simulation device and then enters the engine. The working principle is that high-temperature compressed gas from the outlet of the engine supercharger exchanges heat with water flow of an external circulation pipeline when flowing through an air cooler internal circulation pipeline in an intercooling control device, so that the high-temperature compressed gas is cooled. The heat exchange intensity is further adjusted by controlling the flow of cooling water, so that the temperature of the air after intercooling is controlled, and the temperature of high-temperature gas is adjusted. Referring to fig. 1, fig. 1 is a schematic diagram illustrating a control principle of a typical inter-cooling control system for a bench test in the prior art. The system is divided into two loops, wherein one loop is an intercooler circulating loop connecting the engine and the air cooler, and the other loop is a cooling water circulating loop connecting the air cooler and a circulating water system.

However, in the existing scheme, the cooling water circulation loop only has one water inlet pipeline, and the water inlet pipeline also only has one filter 2 and one valve 1; and the pipeline is also not provided with a water flow sensor, the filter 2 does not have alarm feedback when the blocked water flow quantity is small, and the problem is unknown when the bench experiment data is deviated. Often, the reason of the problem is checked and judged by experience, and whether the blockage is caused is determined by stopping the machine and disassembling the filter screen. The mode obviously needs to be passive, and cannot realize quick judgment and quick switching, so that the continuous operation of the experiment is influenced.

In conclusion, how to effectively guarantee the continuity of the test and improve the test conditions is a problem that needs to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an inter-cooling control system for bench experiments, this inter-cooling control system for bench experiments can go on prejudging in advance to the accessible fast switch over pipeline makes inter-cooling control device put into use fast, with the experimental continuity of guarantee.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides an inter-cooling control system for bench experiments, includes the air cooler, connects the intercooler return circuit of engine and air cooler, connects the cooling water circulation circuit of air cooler and circulating water system, cooling water circulation circuit has two at least branch road pipelines that connect in parallel on the water inlet pipe way, all establishes ties on every branch road pipeline and has had the filter, and all is provided with the valve at the front end of filter and rear end.

Preferably, the air cooler further comprises a water flow sensor arranged between the filter and the air cooler, the water flow sensor is connected with the input end of the controller, and the controller can acquire an actual flow value detected by the water flow sensor.

Preferably, the controller is a PLC controller, a minimum threshold is provided in the PLC controller, and the PLC controller is configured to compare an actual flow value of the water flow sensor with the minimum threshold, and send an alarm signal when the actual flow value is smaller than the minimum threshold.

Preferably, the output end of the PLC is connected with an alarm indicator lamp.

Preferably, the input end and the output end of the PLC are connected with an upper computer.

Preferably, the valve is an electromagnetic valve, and the output end of the PLC is connected with the electromagnetic valve.

Preferably, a regulating valve is arranged on the cooling water circulation loop.

Preferably, a liquid storage tank is arranged on the cooling water circulation loop.

The utility model provides an inter-cooling control system for bench experiments, including air cooler, intercooler circulation circuit, cooling water circulation circuit, intercooler circulation circuit's engine and air cooler are connected, and air cooler and circulating water system's the connection that becomes cooling water circulation circuit. The air cooler is a main component in the intercooling control system, cooling water of the outer circulation loop flows through the air cooler, intercooling air of the inner circulation loop flows through the air cooler, and heat exchange is carried out between the two loops through the air cooler.

The cooling water circulation loop is provided with at least two parallel branch pipelines on the water inlet pipeline, each branch pipeline is connected with a filter in series, and the filters protect the internal passage of the air cooler from being blocked by solid materials. The filter is internally provided with a filter screen, and the filter is required to be frequently disassembled and cleaned according to the water quality condition.

The front end and the rear end of the filter are both provided with valves, and when the filter is cleaned and detached, the valves at the front end and the rear end of the filter are both closed to seal pipelines at two sides.

It should be noted that the cooling water circulation loop has at least two parallel branch pipelines on the water inlet pipeline, for example, two parallel branch pipelines, that is, a bypass is provided on the water inlet pipeline. Walk first branch road pipeline earlier under the normal condition, the valve on this branch road is opened, and the filter return circuit is intake, and the filter return circuit valve of second branch road pipeline is closed, and after experiment operation a period, because of quality of water reason filter screen resistance grow, water flow diminishes to the setting value, and experimenter switches water inlet pipe. At this time, the valve of the first branch pipeline can be closed, the valve of the second branch pipeline can be opened, and the filter on the branch pipeline enters the water loop. Thereby guarantee the normal clear of experiment, can wash the filter screen of first branch road pipeline when treating rack maintenance inspection, guaranteed the continuity of experiment.

The utility model provides an inter-cooling control system for bench experiments, air cooler water inlet pipeline have two at least parallelly connected branch road pipelines, in time switch to pipeline intake all the way in addition before wherein filter blockage becomes serious all the way to possible to prejudge the problem and handle, with the continuity of guarantee test, improved experimental operating mode.

The utility model provides an inter-cooling control system for bench experiments can open the solenoid valve of other pipeline all the way earlier through the button between the operation and launch spare pipeline, closes the solenoid valve of preceding pipeline again. The switching process can be operated remotely, and the switching process does not need to be stopped to enter an experimental room, so that the continuity of the experiment is ensured. A switching program can be programmed in a further PLC system, a pipeline can be automatically switched according to a signal of the water flow sensor and a program set in the PLC in the experiment process, and the experiment switching process is automatic and intelligent.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a control principle of a typical bench test intercooling control system in the prior art;

fig. 2 is a schematic diagram of a control principle of the inter-cooling control system for bench experiments according to an embodiment of the present invention;

fig. 3 is a control mode diagram of the inter-cooling control system for bench experiments.

The drawings are numbered as follows:

the system comprises a valve 1, a filter 2, a water flow sensor 3, a static balance valve 4, an air cooler 5, an engine 6, a regulating valve 7, a liquid storage tank 8, a circulating water pump 9, an alarm indicator lamp 10, a PLC (programmable logic controller) 11 and an upper computer 12.

Detailed Description

The core of the utility model is to provide an inter-cooling control system for bench experiments, this inter-cooling control system for bench experiments can go on prejudging in advance to the accessible fast switch over pipeline makes inter-cooling control device put into use fast, with the experimental continuity of guarantee.

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. 2 to 3, fig. 2 is a schematic diagram illustrating a control principle of an intercooling control system for a bench test according to an embodiment of the present invention; fig. 3 is a control mode diagram of the inter-cooling control system for bench experiments.

In a specific embodiment, the utility model provides an inter-cooling control system for rack experiments, including air cooler 5, connect the intercooler circulation circuit of engine 6 and air cooler 5, connect the cooling water circulation circuit of air cooler 5 and circulating water system, cooling water circulation circuit has two at least parallelly connected branch road pipelines on the water inlet pipeline, all establishes ties on every branch road pipeline and has filter 2, and all is provided with valve 1 at filter 2's front end and rear end.

In the structure, the inter-cooling control system for the bench test comprises an air cooler 5, an inter-cooling circulation loop and a cooling water circulation loop, an engine 6 of the inter-cooling circulation loop is connected with the air cooler 5, and the air cooler 5 is connected with a circulation water system to form the cooling water circulation loop. The air cooler 5 is a main component in the intercooling control system, cooling water of the outer circulation loop flows through the air cooler, intercooling air of the inner circulation loop flows through the air cooler, and heat exchange is carried out between the two loops through the air cooler 5.

The cooling water circulation loop is provided with at least two parallel branch pipelines on the water inlet pipeline, each branch pipeline is connected with a filter 2 in series, and the filters 2 protect the internal passage of the air cooler 5 from being blocked by solid materials. The filter 2 is internally provided with a filter screen, and the filter is required to be frequently disassembled and cleaned according to the water quality condition.

The front end and the rear end of the filter 2 are respectively provided with a valve 1, when the filter 2 is cleaned and detached, the valves 1 at the front end and the rear end of the filter 2 are both closed, and pipelines at two sides are sealed.

It should be noted that the cooling water circulation loop has at least two parallel branch pipelines on the water inlet pipeline, for example, two parallel branch pipelines, that is, a bypass is provided on the water inlet pipeline. Walk first branch road pipeline earlier under the normal condition, valve 1 on this branch road opens, and 2 return circuits of filter intake, 2 return circuits of filter valve 1 of second branch road pipeline close, after experiment operation a period, because of 2 filter screen resistance grow of quality of water reason filter, water flow diminishes to the setting value, experimenter switches the inlet channel. The valve 1 of the first branch line can be closed, the valve 1 of the second branch line can be opened, and the filter 2 on the branch enters the water circuit. Thereby guarantee the normal clear of experiment, can wash 2 filter screens of filter of first branch road pipeline when treating rack maintenance inspection.

The utility model provides an inter-cooling control system for bench experiments, 5 inlet channels of air cooler have two at least parallelly connected branch road pipelines, in time switch to pipeline intake all the way in addition before filter 2 blocks up to become serious wherein all the way to possible to prejudge the problem and handle, with the experimental continuity of guarantee, improved experimental operating mode.

On the basis of the above specific embodiment, the air cooler further comprises a water flow sensor 3 arranged between the filter 2 and the air cooler 5, and the water flow sensor 3 can detect the flow of the cooling water circulation loop in real time. The water flow sensor 3 is connected with the input end of the controller, the controller can acquire the actual flow value detected by the water flow sensor 3, and the actual flow value is fed back to the controller by the water flow sensor 3, so that an operator can know the blocking state of the filter 2 in time. And signals fed back by combining the water flow sensor 3 are switched to the other pipeline for water inlet in time before one filter 2 is seriously blocked. Therefore, the problem can be pre-judged and disposed in advance, the test continuity is guaranteed, and the test working condition is improved.

On the basis of the above specific embodiments, the controller is a PLC controller 11, a minimum threshold is provided in the PLC controller 11, the PLC controller 11 is configured to compare the actual flow value of the water flow sensor 3 with the minimum threshold, and when the actual flow value is smaller than the minimum threshold, an alarm signal is sent out, so that the clogging state of the filter 2 is more accurate and clear, the operating condition of the filter 2 is monitored in combination with the alarm signal, and once the experimental requirements cannot be met, the switching and cleaning can be performed immediately according to the prompt. The device can achieve the purpose of prejudging in advance, and the intercooling control device can be quickly put into use through the quick switching pipeline, so that the test continuity is guaranteed.

On the basis of each specific embodiment, the output end of the PLC controller 11 is connected with the alarm indicator lamp 10, the water flow sensor 3 is connected with the PLC controller 11 through signals, when the filter 2 is blocked to a certain degree, the PLC controller 11 sends out alarm signals to the alarm indicator lamp 10 through water flow, the corresponding field alarm indicator lamp 10 is lightened, and experimenters are prompted to deal with the alarm signals in time.

On the basis of each specific embodiment, the input end and the output end of the PLC 11 are connected with the upper computer 12, the PLC 11 outputs the actual flow value to the upper computer 12, the upper computer 12 synchronously displays the blocking signal of the filter 2, and an operator can check, compare, analyze and store the blocking state of the filter 2 so as to better control the inter-cooling control system for the bench experiment. Meanwhile, according to different specific conditions, the minimum threshold value of the PLC 11 can be properly adjusted through the upper computer 12, and the control is more accurate and reliable.

On the basis of the above specific embodiments, the valve 1 is an electromagnetic valve, the output end of the PLC controller 11 is connected to the electromagnetic valve, the on-off of the electromagnetic valve is controlled by the PLC controller 11, and the electromagnetic valve of another pipeline can be opened to start the standby pipeline and then closed in the operation room by a button. The electromagnetic valve controls the branch pipelines flowing through, the switching process can be remotely operated, the shutdown is not needed, and the continuity of the experiment is guaranteed.

Furthermore, a switching program can be programmed in the PLC system, a pipeline can be automatically switched according to a signal of the water flow sensor and a program set in the PLC in the experiment process, and the experiment switching process is automatic and intelligent.

In another more reliable embodiment, on the basis of any one of the above embodiments, the cooling water circulation loop is provided with an adjusting valve 7, the flow rate of the cooling water in the cooling water circulation loop can be adjusted through the adjusting valve 7, the intensity of heat exchange is adjusted by controlling the flow rate of the cooling water, and then the temperature of the air after intercooling is controlled, so that the temperature adjustment of the high-temperature gas is realized.

Preferably, the regulating valve 7 is an electric proportional regulating valve, and the controller controls the amount of the external cooling water entering and the amount of the internal high-temperature water flowing out through the opening and closing of the regulating valve, so that the heat of the system is taken away, and the control of the temperature of the medium-temperature cooling air is realized.

In another more reliable embodiment, on the basis of any one of the above embodiments, the cooling water circulation loop is provided with the liquid storage tank 8, the liquid storage tank 8 is provided with the gas sensor and the exhaust valve, the gas sensor can detect whether gas exists in the cooling water circulation loop, and when gas exists in the cooling water circulation loop, the exhaust valve is opened to discharge the gas in time, so that the cooling water in the cooling water circulation loop is ensured to be smooth.

And a static balance valve 4 is arranged on the cooling water circulation loop and plays a role in balancing inlet and outlet pressure and flow in the system. Through adjusting the static balance valve 4, the circulation flow and the circulation pressure on the cooling water circulation loop can be finely adjusted, and then the temperature of the circulating cooling water is finely adjusted, so that the control precision of the temperature of the medium-cold air is improved.

A circulating water pump 9 is arranged on the cooling water circulating loop, and the circulating water pump 9 can promote the cooling water to circulate in the system; it is also possible to compensate for pressure losses inside the system and in the connection lines to the engine 6.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The intercooling control system for the bench test provided by the utility model is described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides an inter-cooling control system for bench experiments, its characterized in that includes air cooler (5), the intercooler return circuit of connecting engine (6) and air cooler (5), the cooling water circulation return circuit of connecting air cooler (5) and circulating water system, cooling water circulation return circuit has two at least parallelly connected branch road pipelines on the inlet tube, all establishes ties filter (2) on every branch road, and all is provided with valve (1) at the front end of filter (2) and rear end.

2. The intercooling control system for bench experiments according to claim 1, further comprising a water flow sensor (3) arranged between the filter (2) and the air cooler (5), wherein the water flow sensor (3) is connected to an input of a controller, and the controller is capable of obtaining an actual flow value detected by the water flow sensor (3).

3. The inter-cooling control system for bench tests as claimed in claim 2, wherein the controller is a PLC controller (11), a minimum threshold is arranged in the PLC controller (11), the PLC controller (11) is used for comparing the actual flow value of the water flow sensor (3) with the minimum threshold, and when the actual flow value is smaller than the minimum threshold, an alarm signal is sent out.

4. The inter-cooling control system for bench experiments as claimed in claim 3, wherein the output end of the PLC (11) is connected with an alarm indicator lamp (10).

5. The intercooling control system for bench experiments according to claim 4, wherein the input and output of the PLC controller (11) are connected with an upper computer (12).

6. The cold control system for bench experiments as claimed in any one of claims 3-5, wherein the valve (1) is a solenoid valve, and the output end of the PLC controller (11) is connected with the solenoid valve.

7. The intercooling control system for bench experiments according to claim 1, wherein a regulating valve (7) is provided on the cooling water circulation loop.

8. The intercooling control system for bench experiments according to claim 1, wherein a liquid storage tank (8) is provided on the cooling water circulation loop.