Pipeline valve flow coefficient testing system

Abstract

The utility model discloses a pipeline valve flow coefficient test system, which is applied to a gas pipeline and comprises a test pressure reducing valve, a tested valve, a flow meter, an electric valve and a controller. Wherein the test pressure reducing valve is arranged on the gas pipeline and is used for adjusting the gas pressure in the gas pipeline; the tested valve is arranged on the gas pipeline and is positioned at the downstream of the tested valve; the flow meter is arranged on the gas pipeline, is positioned at the downstream of the detected valve and is used for detecting the flow in the gas pipeline; the electric valve is arranged on the gas pipeline and is positioned at the downstream of the flowmeter; the controller is electrically connected with the flow meter and the electric valve and used for obtaining the flow of the flow meter and controlling the opening degree of the electric valve. According to the utility model, accurate control of the flow in the gas pipeline is realized, and the problems that the flow in the gas pipeline cannot be stabilized at a target value and the flow coefficient of the tested valve cannot be accurately tested due to manual adjustment of the valve in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to flow coefficient test technical field, concretely relates to a pipeline valve flow coefficient test system. BACKGROUND

[0002] In prior art, during the flow coefficient test, the flow is generally adjusted by manually adjusting the needle valve, but it is difficult to accurately adjust the opening of the valve by hand, so that the adjusted flow is always around the target value, and cannot be stabilized at the target value, resulting in that the valve is tested at the wrong flow value, so that it is difficult to ensure the accuracy of the subsequent test results, and the correct calculation of the final flow coefficient is affected.

[0003] Therefore, a test system for accurately testing the flow coefficient under stable flow value experimental conditions is needed. UTILITY MODEL CONTENT

[0004] Therefore, the utility model embodiment provides a pipeline valve flow coefficient test system to at least solve the problems that the flow in the gas pipeline cannot be stabilized at the target value and the function of the measured valve cannot be accurately tested due to manual adjustment of the valve in prior art.

[0005] The utility model embodiment provides the following technical scheme:

[0006] The utility model embodiment provides a pipeline valve flow coefficient test system, which is applied to a gas pipeline and comprises:

[0007] A test pressure reducing valve is arranged on the gas pipeline and is used to adjust the gas pressure in the gas pipeline.

[0008] A measured valve is arranged on the gas pipeline and is located downstream of the test pressure reducing valve.

[0009] A flow meter is arranged on the gas pipeline and is located downstream of the measured valve, and is used to detect the flow in the gas pipeline.

[0010] An electric valve is arranged on the gas pipeline and is located downstream of the flow meter.

[0011] A controller is electrically connected to the flow meter and the electric valve, and is used to acquire the flow of the flow meter and control the opening of the electric valve.

[0012] Further, the system further comprises:

[0013] A first pressure gauge is arranged on the gas pipeline and is located between the measured valve and the flow meter, and is used to detect the gas pressure on the outlet side of the measured valve.

[0014] Further, the pipeline valve flow coefficient test system further comprises:

[0015] A manual valve is arranged on the gas pipeline and located between the test pressure reducing valve and the measured valve, and is used for manually adjusting the gas pressure in the gas pipeline.

[0016] Further, the pipeline valve flow coefficient test system further comprises:

[0017] A second pressure gauge is arranged on the gas pipeline and located between the manual valve and the measured valve, and is used for detecting the gas pressure on the inlet side of the measured valve.

[0018] Further, the pipeline valve flow coefficient test system further comprises:

[0019] A manual control element is connected with the controller and is used for sending a preset signal to the controller.

[0020] Further, the manual control element is a pulse device.

[0021] Compared with the prior art, the above-mentioned at least one technical scheme adopted by the embodiment of the utility model can achieve at least the following beneficial effects:

[0022] The pipeline valve flow coefficient test system of the utility model, through the test regulating valve, adjusts the gas pressure in the gas pipeline to a preset value, then the pressure-regulated gas flows through the measured valve and the flowmeter in turn, and the flow after the measured valve is detected through the flowmeter, after the controller obtains the flow in the gas pipeline through the flowmeter, the opening of the electric valve is controlled, so that the gas flow in the gas pipeline is stabilized at the target value, and finally the measured valve is tested, thereby solving the problems that in the prior art, the manual regulating valve causes the flow in the gas pipeline to be unable to be stabilized at the target value and the flow coefficient of the measured valve cannot be accurately tested. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 It is a structure schematic view of the pipeline valve flow coefficient test system of the utility model.

[0025] The utility model has the following reference signs:

[0026] 10, gas line; 20, test pressure reducing valve; 30, valve under test; 40, flow meter; 50, electrically operated valve; 60, controller; 70, first pressure gauge; 80, manually operated valve; 90, second pressure gauge; 100, manually operated control element. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described in detail with reference to the drawings, wherein:

[0028] Although the present application has been described with reference to specific embodiments, it is apparent that various alterations and modifications can be made to the illustrated examples without departing from the spirit and scope of the application. In particular, it is within the scope of the application to use the described embodiments in different combinations with each other and with other embodiments not mentioned. Accordingly, the disclosure of the present application is intended to be illustrative, but not limiting, of the scope of the application, which is set forth in the following claims.

[0029] It is to be understood that the foregoing description is that of only one example of the application and that numerous changes and modifications can be made thereto without departing from the spirit and scope of the application. Although the present application has been described with reference to specific examples, it is to be understood that the application is not limited to these specific examples. The specific examples are disclosed solely for illustrating the present application, but not for limiting the scope of the application. Various modifications and changes can be made thereto by those skilled in the art which freely incorporate the principles of the application, and therefore, it is the intention that the scope of the application be determined by the broadest permissible interpretation of the following claims to incorporate the principles and embodiments disclosed herein.

[0030] It is also to be understood that the following description is only one example of the application and that numerous changes and modifications can be made thereto without departing from the spirit and scope of the application. Although the present application has been described with reference to specific examples, it is to be understood that the application is not limited to these specific examples. The specific examples are disclosed solely for illustrating the present application, but not for limiting the scope of the application. Various modifications and changes can be made thereto by those skilled in the art which freely incorporate the principles of the application, and therefore, it is the intention that the scope of the application be determined by the broadest permissible interpretation of the following claims to incorporate the principles and embodiments disclosed herein.

[0031] In addition, in the following description, numerous specific details are set forth in order to provide a thorough understanding of the examples. However, it will be apparent to one skilled in the art that the examples can be practiced without these specific details.

[0032] In view of the problem in the prior art that manual adjustment of the needle valve is difficult to accurately control the valve opening, so that the flow coefficient of the measured valve cannot be accurately tested, the pipeline valve flow coefficient testing system can control the opening of the electric valve 50 to adjust and stabilize the flow in the gas pipeline 10 at the preset value after the actual flow in the pipeline is fed back by the flowmeter 40, thereby solving the problem in the prior art that manual adjustment of the valve cannot stabilize the flow in the gas pipeline 10 at the target value and cannot accurately test the flow coefficient of the measured valve 30.

[0033] The technical scheme provided by the embodiments of the present application is described below with reference to the drawings.

[0034] As Figure 1 shown, the pipeline valve flow coefficient testing system of the utility model, applied to gas pipeline 10, including test pressure reducing valve 20, measured valve 30, flowmeter 40, electric valve 50 and controller 60. Among them, test pressure reducing valve 20 is arranged on gas pipeline 10, for adjusting the gas pressure in gas pipeline 10;Measured valve 30 is arranged on gas pipeline 10 and is located downstream of test pressure reducing valve 20;Flowmeter 40 is arranged on gas pipeline 10 and is located downstream of measured valve 30, for detecting the flow in gas pipeline 10;Electric valve 50 is arranged on gas pipeline 10 and is located downstream of flowmeter 40;Controller 60 is electrically connected with flowmeter 40 and electric valve 50 respectively, for obtaining the flow of flowmeter 40 and controlling the opening of electric valve 50.

[0035] Among them, gas pipeline 10 can be formed by splicing multiple sub-pipelines, and test pressure reducing valve 20, measured valve 30, flowmeter 40 and electric valve 50 can be arranged at the splicing position of the multiple sub-pipelines.

[0036] Among them, test pressure reducing valve 20 is used to preliminarily adjust the gas pressure in gas pipeline 10 to the preset value, so that the flow in gas pipeline 10 can be stabilized at the target value by measured valve 30 and electric valve 50 subsequently.

[0037] Among them, measured valve 30 is a fixed valve in gas pipeline 10, which is the test object of the present application.

[0038] For example, measured valve 30 can be a pressure reducing valve.

[0039] Among them, flowmeter 40 is used to detect the gas flow in gas pipeline 10, so that the staff or controller 60 can judge whether the gas flow in gas pipeline 10 reaches the preset value.

[0040] The opening degree of the electric valve 50 can be accurately adjusted under the control of the controller 60, so that the gas flow of the gas pipeline 10 is accurately adjusted, and the problem that the flow value cannot be accurately controlled due to manual adjustment of the needle valve to adjust the opening degree of the valve is avoided.

[0041] The controller 60 can be a microcontroller, a PLC controller or the like, which is mainly used for controlling the opening degree of the electric valve 50 to adjust the flow of the gas in the gas pipeline 10.

[0042] The controller 60 of the utility model is only used for adjusting the opening degree of the electric valve 50 according to the actual flow fed back by the flowmeter 40, so as to solve the problem of unstable manual valve opening and closing.

[0043] The controller 60 of the utility model adjusts the opening degree of the electric valve 50 according to the flow, and does not involve the improvement of the method / program, and only needs to correspondingly open and close the opening degree of the electric valve 50 according to the obtained actual flow to realize the scheme claimed in the application.

[0044] In some embodiments, after the worker obtains the actual flow in the gas pipeline 10 through the flowmeter 40, the worker can adjust the opening degree of the electric valve 50 through the controller 60 to adjust the flow of the gas pipeline 10, and when the actual flow of the gas pipeline 10 obtained by the worker through the flowmeter 40 reaches the target flow, the opening degree of the electric valve 50 is stopped by the controller 60 to realize the stabilization of the flow in the gas pipeline 10 at the target flow.

[0045] In some embodiments, the controller 60 can obtain the actual flow and the target flow detected by the flowmeter 40, and then adjust the opening degree of the electric valve 50 until the actual flow reaches the target flow detected by the controller 60, and then stop adjusting the electric valve 50 to realize the stabilization of the flow in the gas pipeline 10 at the target flow.

[0046] Preferably, the opening degree of the electric valve 50 can be dynamically adjusted by the controller 60 according to the actual flow of the flowmeter 40 and the preset target flow to realize the automatic adjustment of the flow of the gas pipeline 10.

[0047] Specifically, the controller 60 can obtain the preset target flow and the actual flow detected by the flowmeter 40, and when the controller 60 judges that the actual flow is not equal to the target flow, the flow in the gas pipeline 10 can be adjusted by adjusting the electric valve 50 to change the actual flow detected by the flowmeter 40, and when the controller 60 detects that the actual flow is within the error range or completely equal to the target flow, the opening degree of the electric valve 50 is stopped.

[0048] For example, when the actual flow detected by the flow meter 40 is greater than the target flow, the opening of the electric valve 50 is reduced by the controller 60; when the actual flow detected by the flow meter 40 is less than the target flow, the opening of the electric valve 50 is increased by the controller 60.

[0049] Further, the pipeline valve flow coefficient testing system further comprises a first pressure gauge 70, which is arranged on the gas pipeline 10 and located between the measured valve 30 and the flow meter 40, and used to detect the gas pressure on the outlet side of the measured valve 30, so that the staff can know the gas pressure of the gas passing through the outlet side of the measured valve 30.

[0050] Further, the pipeline valve flow coefficient testing system further comprises a manual valve 80, which is arranged on the gas pipeline 10 and located between the testing pressure reducing valve 20 and the measured valve 30, and used to manually adjust the gas pressure in the pipeline.

[0051] The manual valve 80 is used to open after the testing pressure reducing valve 20 adjusts the gas pressure in the gas pipeline 10 to a preset value, so that the gas passes through, and the staff can also adjust the gas pressure in the gas pipeline 10 through the manual valve 80.

[0052] Further, the pipeline valve flow coefficient testing system further comprises a second pressure gauge 90, which is arranged on the gas pipeline 10 and located between the manual valve 80 and the measured valve 30, and used to detect the gas pressure on the inlet side of the measured valve 30.

[0053] The gas pressures on the outlet side and the inlet side of the measured valve 30 are detected by the first pressure gauge 70 and the second pressure gauge 90 respectively, so that the flow passing through the measured valve 30 can be determined, and the flow coefficient can be calculated.

[0054] In some embodiments, the pipeline valve flow coefficient testing system further comprises a manual control element 100, which is connected with the controller 60 and used to send a preset signal to the controller 60, wherein the preset signal includes a preset value of the flow of the gas pipeline 10.

[0055] The manual control element 100 can be wirelessly or wiredly connected with the controller 60.

[0056] For example, the manual control element 100 can be a mobile phone, a tablet computer, a computer or the like, and is connected with the controller 60 through a Bluetooth module or other wireless communication module, so as to realize remote control of the controller 60 or remote sending of a control signal to the controller 60.

[0057] In some of the embodiments, the manual control element 100 is a pulse device, which is electrically connected with the controller 60, and the staff can send the preset value of the flow of the gas pipeline 10 to the controller 60 through the pulse device, so that the controller 60 controls the opening degree of the electric valve 50, so that the gas flow reaches the preset target flow.

[0058] The preferred working principle of the utility model is as follows:

[0059] After the gas enters the test pressure reducing valve 20, the test pressure reducing valve 20 adjusts the gas pressure to the required pressure;

[0060] The manual valve 80 and the measured valve 30 are opened, and the pressure difference value of the inlet side and the outlet side of the measured valve 30 is obtained through the first pressure gauge 70 and the second pressure gauge 90, so as to calculate the flow coefficient;

[0061] The target flow value is input to the controller 60, and the target flow value is compared with the feedback value (actual flow) of the flowmeter 40, so as to control the opening and closing ratio of the electric valve 50 until the target flow is equal to the feedback value of the flowmeter 40, so as to realize automatic adjustment.

[0062] In the manual adjustment mode, the staff manually operates the pulse device to send a signal to the controller 60, and the opening and closing ratio of the electric valve 50 is controlled by the controller 60, and the flow signal is fed back to the control system by the flowmeter 40.

[0063] The pipeline valve flow coefficient test system of the utility model introduces the feedback signal of the flowmeter 40 into the control system, so that the target flow is compared with the feedback flow, accurate adjustment is realized, and in the automatic mode, only the target flow value needs to be input, the controller 60 can automatically adjust the opening and closing ratio of the electric valve 50, so that the target flow is obtained, and in the manual mode, only the pulse device needs to be manually adjusted, the opening and closing ratio of the electric valve 50 can be controlled, and the target flow is obtained.

[0064] The utility model can adjust the opening degree of the electric valve 50 in real time through the controller 60 to adjust the flow in the gas pipeline 10, so as to realize stable adjustment of the gas flow in the gas pipeline 10, and the function of manually adjusting the valve is reserved, and the flow can also be accurately manually adjusted by inputting the pulse number.

[0065] In the specification, the same and similar parts between each embodiment are referred to each other, and each embodiment focuses on the difference from other embodiments. Especially, for the product embodiment described later, since it corresponds to the method, the description is simple, and the related part refers to the part of the system embodiment.

[0066] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any changes or replacements within the technical scope disclosed by the present application can be easily conceived by the person skilled in the art, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A pipe valve flow coefficient test system, comprising: Applied to a gas pipeline, comprising: a test pressure reducing valve arranged on the gas pipeline for adjusting the gas pressure in the gas pipeline; a measured valve arranged on the gas pipeline and downstream of the test pressure reducing valve; a flow meter arranged on the gas pipeline and downstream of the measured valve for detecting the flow in the gas pipeline; an electrically operated valve arranged on the gas pipeline and downstream of the flow meter; a controller electrically connected with the flow meter and the electrically operated valve respectively for acquiring the flow of the flow meter and controlling the opening of the electrically operated valve.

2. The pipe valve flow coefficient test system of claim 1, wherein, Further comprising: a first pressure gauge arranged on the gas pipeline and between the measured valve and the flow meter for detecting the gas pressure on the outlet side of the measured valve.

3. The pipe valve flow coefficient test system of claim 2, wherein, Further comprising: a manual valve arranged on the gas pipeline and between the test pressure reducing valve and the measured valve for manually adjusting the gas pressure in the gas pipeline.

4. The pipe valve flow coefficient test system of claim 3, wherein, Further comprising: a second pressure gauge arranged on the gas pipeline and between the manual valve and the measured valve for detecting the gas pressure on the inlet side of the measured valve.

5. The pipe valve flow coefficient test system of any of claims 1-4, wherein, Further comprising: a manual control element connected with the controller for sending a preset signal to the controller.

6. The pipe valve flow coefficient test system of claim 5, wherein, The manual control element is a pulse device.

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