Pneumatic valve detection device

Abstract

The utility model relates to a pneumatic valve detection device which comprises a workbench, an oil-water separation assembly, a backward pressure storage tank, a forward pressure storage tank and a detection control system. The oil-water separation assembly is connected with the back pressure storage tank and the forward pressure storage tank, a first outlet is formed in the back pressure storage tank, a second outlet is formed in the forward pressure storage tank, the first outlet is connected with a pneumatic executing mechanism of a valve to be tested, and the second outlet is connected with the air inlet end of a valve body of the valve to be tested. The detection control system is connected with the valve to be detected through an electrical control signal line. By arranging the forward pressure storage tank and the backward pressure storage tank, power and back pressure are provided for the valve to be tested respectively, and different pressure conditions of an operation site are better simulated; by arranging the microcomputer controller and the programmable controller, the response performance parameters of the valve are accurately detected, and the response time detection result is accurate to the millisecond level.

Description

Technical Field

[0001] The utility model relates to a valve detection device, in particular to a valve detection device for detecting a pneumatic back-blowing valve. Background Art

[0002] Pulse backflush is an important part of high-temperature flue gas dust removal, among which the pneumatic backflush valve is the most important component. The response speed and opening speed of the backflush valve directly determine the dust removal efficiency and the repeated regeneration of the filter. Usually, the corresponding parameters of the valve are provided by the manufacturer, which cannot truly reflect the true performance of the valve. Therefore, it is necessary to design a device for valve performance testing to meet actual needs.

[0003] The Chinese utility model patent with patent application number 202320891582.1 discloses a gas valve detection device, but it is mainly used to detect the air tightness of the valve and determine the leakage location, but cannot detect parameters such as the valve response performance. Utility Model Content

[0004] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides a pneumatic valve detection device that can detect the response performance parameters of the valve.

[0005] Technical solution: To achieve the above-mentioned purpose, the utility model discloses a pneumatic valve detection device, characterized in that it includes a workbench and an oil-water separation component, a back pressure storage tank, a forward pressure storage tank and a detection control system installed on the workbench, the oil-water separation component is connected to the back pressure storage tank and the forward pressure storage tank respectively through an air source pipe, the back pressure storage tank is provided with a first outlet, the forward pressure storage tank is provided with a second outlet, the first outlet is connected to the pneumatic actuator of the valve to be tested, the second outlet is connected to the air inlet end of the valve body of the valve to be tested, and the detection control system is connected to the valve to be tested through an electrical control signal line.

[0006] Furthermore, the oil-water separation assembly includes a first oil-water separator and a second oil-water separator, the first oil-water separator is connected to the back pressure storage tank via an air source pipe, and the second oil-water separator is connected to the forward pressure storage tank via an air source pipe.

[0007] Furthermore, the second outlet is connected to a reducing flange, and the air inlet end of the valve body of the valve to be tested is detachably connected to the reducing flange.

[0008] Furthermore, a first cut-off valve is provided at the first outlet, a second cut-off valve is provided at the second outlet, and the second cut-off valve is provided between the second outlet and the reducing flange.

[0009] Furthermore, the back pressure storage tank is provided with a first pressure regulating device, and the forward pressure storage tank is provided with a second pressure regulating device.

[0010] Furthermore, the detection control system includes a touch screen and a PLC, and the PLC is arranged between the touch screen and the valve to be detected.

[0011] Furthermore, the detection and control system further comprises a feedback mechanism connected to the valve to be tested, and the feedback mechanism is used to collect the opening and resetting information of the valve core of the valve to be tested.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By setting up two pressure storage tanks in the forward direction and the reverse direction, power and back pressure are provided for the valve to be tested respectively, so as to better simulate different pressure conditions at the working site and realize the performance test of the valve under high pressure;

[0014] 2. By setting up the touch screen and PLC, the response performance parameters of the valve can be accurately detected, and the response time detection results are accurate to milliseconds. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the back pressure storage tank;

[0017] Figure 3 Schematic diagram of the positive pressure tank structure.

[0018] In the figure: 1. workbench; 2. oil-water separation assembly; 21. first oil-water separator; 22. second oil-water separator; 3. back pressure storage tank; 31. first outlet; 32. first shut-off valve; 4. forward pressure storage tank; 41. second outlet; 42. second shut-off valve; 43. reducing flange; 5. detection and control system; 51. touch screen; 6. valve to be tested; 71. first pressure regulating device; 72. second pressure regulating device; 8. compressed air supply equipment. DETAILED DESCRIPTION

[0019] The following is combined with Figures 1 to 3 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0020] A pneumatic valve detection device comprises a workbench 1, an oil-water separation component 2, a back pressure storage tank 3, a forward pressure storage tank 4 and a detection control system 5 installed on the workbench 1.

[0021] The oil-water separation component 2 is used to filter compressed air. The oil-water separation component 2 includes a first oil-water separator 21 and a second oil-water separator 22. The first oil-water separator 21 is connected to the back pressure storage tank 3 through an air source pipe, and the second oil-water separator 22 is connected to the forward pressure storage tank 4 through an air source pipe.

[0022] A first outlet 31 is provided on the back pressure storage tank 3. The first outlet 31 is connected to the pneumatic actuator of the valve to be tested 6 through an air source pipe to provide back pressure for the valve to be tested 6. A first cut-off valve 32 can also be installed at the first outlet 31 to control the entry of compressed air.

[0023] The forward pressure storage tank 4 is provided with a second outlet 41, and the second outlet 41 is detachably connected to the air inlet end of the valve body of the valve to be tested 6 through a reducing flange 43, so as to provide power for the valve to be tested 6. The detachable connection is convenient for replacing the valve to be tested, and is preferably a bolted connection. Similarly, a second cut-off valve 42 can be installed at the second outlet 41, and the second cut-off valve 42 is arranged between the second outlet 41 and the reducing flange 43 to control the entry of compressed air. A pressure regulating device 71 is provided on the back pressure storage tank 3, and a pressure regulating device 72 is provided on the forward pressure storage tank 4, which are used to adjust the pressure inside the tank. By separately adjusting the air pressure in the back pressure storage tank 3 and the forward pressure storage tank 4, the response performance and status data of the pneumatic valve under different pressure conditions can be detected, providing a reference for industrial selection.

[0024] The detection control system 5 includes a touch screen 51 and a PLC. The detection control system 5 is connected to the valve to be tested 6 to operate and collect data on the valve to be tested 6. Specifically, the PLC is set between the touch screen 51 and the valve to be tested 6, and they are connected through an electrical control signal line. A feedback mechanism can also be connected to the valve to be tested 6 to collect the valve core opening and resetting information of the valve to be tested 6.

[0025] During the detection, first connect the valve to be tested 6 with the pneumatic valve detection device of the utility model; start the compressed air supply device 8 to provide compressed air for the pneumatic valve detection device, and the compressed air is respectively connected to the first oil-water separator 21 and the second oil-water separator 22 through the air source pipe through the equal-diameter tee; after the compressed air is filtered by the first oil-water separator 21 and the second oil-water separator 22, it enters the back pressure storage tank 3 and the forward pressure storage tank 4 through the air source pipe; adjust the first pressure regulating device 71 and the second pressure regulating device 72 to make the air pressure in the back pressure storage tank 3 and the forward pressure storage tank 4 reach the experimental requirements; operate the valve to be tested 6 and collect data through the detection control system 5.

[0026] The preferred detection means are as follows:

[0027] Detect valve opening and closing speed: operate the touch screen 51, click start to open the valve, click close to close the valve, repeat the operation several times, and export relevant data for data analysis. The data can be accurate to millisecond level.

[0028] Detect the valve opening and closing status: operate the touch screen 51, input the overall valve action time, and observe or feedback the valve core through the feedback mechanism to see whether it is opened and closed in place.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pneumatic valve detection device, characterized in that: The invention comprises a workbench (1), an oil-water separation assembly (2), a back pressure storage tank (3), a forward pressure storage tank (4) and a detection control system (5) installed on the workbench (1); the oil-water separation assembly (2) is connected to the back pressure storage tank (3) and the forward pressure storage tank (4) respectively through an air source pipe; the back pressure storage tank (3) is provided with a first outlet (31), and the forward pressure storage tank (4) is provided with a second outlet (41); the first outlet (31) is connected to a pneumatic actuator of a valve to be tested (6), and the second outlet (41) is connected to an air inlet end of a valve body of the valve to be tested (6); and the detection control system (5) is connected to the valve to be tested (6).

2. The pneumatic valve detection device according to claim 1, characterized in that: The oil-water separation assembly (2) comprises a first oil-water separator (21) and a second oil-water separator (22); the first oil-water separator (21) is connected to the back pressure storage tank (3) via an air source pipe, and the second oil-water separator (22) is connected to the forward pressure storage tank (4) via an air source pipe.

3. The pneumatic valve detection device according to claim 1, characterized in that: The second outlet (41) is connected to a reducing flange (43), and the air inlet end of the valve body of the valve to be tested (6) is detachably connected to the reducing flange (43).

4. The pneumatic valve detection device according to claim 3, characterized in that: A first cut-off valve (32) is provided at the first outlet (31), a second cut-off valve (42) is provided at the second outlet (41), and the second cut-off valve (42) is provided between the second outlet (41) and the reducing flange (43).

5. The pneumatic valve detection device according to claim 1, characterized in that: The back pressure storage tank (3) is provided with a first pressure regulating device (71), and the forward pressure storage tank (4) is provided with a second pressure regulating device (72).

6. The pneumatic valve detection device according to claim 1, characterized in that: The detection control system (5) comprises a touch screen (51) and a PLC, wherein the PLC is arranged between the touch screen (51) and the valve to be detected (6).

7. The pneumatic valve detection device according to claim 6, characterized in that: The detection control system (5) further comprises a feedback mechanism connected to the valve to be tested (6), wherein the feedback mechanism is used to collect valve core opening and resetting information of the valve to be tested (6).

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