Performance maintenance platform for chemical pipe valves

Abstract

The utility model discloses a chemical pipe valve performance maintenance platform which comprises a maintenance loop and a PLC control box, the maintenance loop is a closed loop, a water tank, a first gate valve, a filter, a damping pipe, a pressure test pump, a one-way valve and a detection branch are sequentially connected in series on the maintenance loop, and a first ball valve, a maintenance pipe valve and a second ball valve are sequentially connected in series on the detection branch. The maintenance loop is provided with a first pressure transmitter, a flow transmitter and a temperature transmitter, the water tank is provided with a metal pressure gauge, a safety valve, an overflow pipeline and a blow-off pipeline, and the pressure test pump, the first pressure transmitter, the flow transmitter and the temperature transmitter are electrically connected with the PLC control box; the maintenance loop of the maintenance platform is provided with the pressure test pump, the filter, the damping pipe, the one-way valve and the detection branch, a pipe valve working liquid path is simulated and maintained in real time, the performance detection result is more reliable, the disassembly and assembly capacity of chemical pipelines and valves, the maintenance level of the pipe valves and the fault judgment capacity can be improved, the maintenance time is shortened, man-made misjudgment is reduced, and the maintenance efficiency is improved. And the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe and valve performance maintenance and testing platforms, in particular to a chemical pipe and valve performance maintenance platform. Background Art

[0002] The existing chemical pipe valve maintenance equipment mainly consists of single valves, which are relatively simple. They cannot be connected to the pipeline pump during valve maintenance, are seriously out of touch with the actual working conditions, cannot accurately detect the problem points, or cannot accurately reflect the actual working performance. The valves after maintenance and performance testing are not convenient for checking the operating conditions of the valves after maintenance. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a chemical pipe valve performance inspection platform to solve one or more problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A chemical pipe and valve performance maintenance platform comprises a maintenance circuit and a PLC control box. The maintenance circuit is a closed loop, on which a water tank, a first gate valve, a filter, a damping tube, a pressure test pump, a one-way valve and a detection branch are connected in series in sequence. The maintenance pipe valve is connected in series to the detection branch. A first ball valve and a second ball valve are connected in series on the detection branch. The maintenance pipe valve is located between the first ball valve and the second ball valve. A first pressure transmitter, a flow transmitter and a temperature transmitter are provided on the maintenance circuit. The pressure transmitter is located at the rear end of the pressure test pump, and the flow transmitter and the temperature transmitter are located at the rear end of the detection branch. A metal pressure gauge, a safety valve, an overflow pipeline and a sewage pipeline are provided on the water tank. The first pressure transmitter, the flow transmitter and the temperature transmitter are electrically connected to the PLC control box respectively.

[0006] Preferably, a bypass branch is arranged in parallel with the detection branch, and a second gate valve is connected in series to the bypass branch.

[0007] More preferably, a pump priming pipeline is further provided at the rear end of the pressure test pump, a sixth ball valve is provided on the pump priming pipeline, and a pump priming funnel is provided at the end thereof.

[0008] Further preferably, the maintenance circuit is also provided with a reflux branch in parallel with the pressure test pump, one end of the reflux branch is connected to the front end of the one-way valve, a third gate valve is arranged on the reflux branch, and the first pressure transmitter is located between the filling pump pipeline and the pressure test pump.

[0009] Further preferably, a second pressure transmitter is provided between the other end of the reflux branch and the damping tube, and the second pressure transmitter is electrically connected to the PLC control box.

[0010] Further preferably, a third ball valve and an emptying branch are also provided on the maintenance circuit, the third ball valve is located at the rear end of the water tank, one end of the emptying branch is connected to the front end of the water tank, and a fifth ball valve is provided at the other end.

[0011] Compared with the prior art, the chemical pipe valve performance inspection platform of the utility model has the following beneficial effects:

[0012] The maintenance platform connects the maintenance pipes and valves in series to the maintenance circuit. The maintenance circuit is equipped with a pressure test pump, a filter, a damping tube, a one-way valve and a detection branch to simulate the working fluid circuit of the maintenance pipes and valves in real time. Compared with the maintenance platform of the existing technology, its feedback performance test results are more reliable, and it can improve the disassembly and assembly capabilities of chemical pipelines and valves, as well as the maintenance level and fault judgment capabilities of pipes and valves, shorten maintenance time, reduce human misjudgment, and improve detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural principle diagram of the detection platform of the utility model.

[0014] In the figure: 1. water tank; 11. sewage pipeline; 2. maintenance circuit; 21. first gate valve; 22. filter; 23. damping tube; 24. one-way valve; 25. first ball valve; 26. second ball valve; 27. flow transmitter; 28. third ball valve; 3. bypass branch; 31. second gate valve; 4. reflux branch; 41. third gate valve; 5. pressure test pump; 6. drain branch; 61. fifth ball valve; 7. maintenance pipe valve; 8. pump filling pipeline; 81. pump filling funnel; 82. sixth ball valve. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only the best embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] like Figure 1As shown, this embodiment provides a chemical pipe valve performance maintenance platform, which can perform single-body maintenance on various valves, such as gate valves, stop valves, butterfly valves and ball valves, or perform blind plate plugging operations to achieve local and overall pressure test detection operations, which are referred to as maintenance pipe valves 7 in this article; the chemical pipe valve performance maintenance platform includes a maintenance circuit 2 and a PLC control box, and the pressure test pump 5 pumps pressure test water in a quantitative manner, and judges the fault type based on the temperature data, water pressure data and flow data collected from the maintenance circuit 2, wherein the maintenance circuit 2 is a closed loop circuit, on which a water tank 1, a first gate valve 21, a filter 22, a damping tube 23, a pressure test pump 5, a one-way valve 24 and a detection branch are connected in series in sequence, the water tank 1 is set at a low position, and the pressure test pump 5 pumps the pressure test water at the actual working frequency. The pressure test water is filtered by the filter 22, and the water pressure of the maintenance circuit 2 is stabilized by the damping tube 23. The pressure test water output by the pressure test pump 5 is pressurized and delivered to the detection branch through the one-way valve 24, and the maintenance circuit 2 The operating state of the inspection valve 7 is realistically simulated. In order to facilitate the replacement and disassembly of the inspection valve 7, the first ball valve 25 and the second ball valve 26 are arranged in series on the detection branch. The inspection valve 7 is located between the first ball valve 25 and the second ball valve 26. After closing the first ball valve 25 and the second ball valve 26, the inspection valve 7 can be disassembled or the blind plate can be removed and plugged. In order to collect water flow data during the pressure test, the inspection circuit 2 is provided with a first pressure transmitter, a flow transmitter 27 and a temperature transmitter. The pressure transmitter collects the water pressure data at the rear end (water outlet) of the pressure test pump 5, and the flow transmitter 27 and the temperature transmitter collect the water flow rate and water temperature at the rear end of the detection branch. In addition, the water tank 1 is provided with a water inlet, a metal pressure gauge, a safety valve, an overflow pipeline and a sewage pipeline 11. The metal pressure gauge is convenient for monitoring the water pressure data in the water tank 1. Ball valves are arranged on the overflow pipeline and the sewage pipeline 11 for on-off control to ensure the safe use and normal maintenance of the water tank 1.

[0017] In this embodiment, a bypass branch 3 is arranged in parallel with the detection branch, and a second gate valve 31 is connected in series to the bypass branch 3. When the maintenance pipe valve 7 is replaced or the inspection and repair operation is stopped, the normal circulation of the entire maintenance circuit 2 can be maintained through the bypass branch 3. At the same time, the setting of the bypass branch 3 can also facilitate the performance inspection of the entire maintenance circuit 2.

[0018] The pressure test pump 5 adopts a centrifugal pump. Before starting, close the first gate valve 21, and use the pump filling pipeline 8 to fill the pressure test pump 5 with water to exclude air. The pump filling pipeline 8 is connected to the maintenance circuit 2 at the rear end of the pressure test pump 5. A sixth ball valve 82 is provided on the pump filling pipeline 8, and the end of the sixth ball valve 82 is a pump filling funnel 81.

[0019] In this embodiment, when the flow transmitter 27 detects that the water flow is too large, the reflux branch 4 is opened to return water, stabilize and reduce the water flow of the maintenance circuit 2 to match the maintenance circuit 2 and the water tank 1 and the pressure test pump 5 thereon. The reflux branch 4 is connected in parallel to both ends of the pressure test pump 5, the front end of the reflux branch 4 is connected to the front end of the one-way valve 24, and the rear end thereof is connected to the front end (water inlet end) of the pressure test pump 5. A third gate valve 41 is arranged on the reflux branch 4, and the first pressure transmitter is located between the filling pump pipeline 8 and the pressure test pump 5.

[0020] In this embodiment, a second pressure transmitter is provided between the other end of the reflux branch 4 and the damping tube 23 , and the second pressure transmitter is electrically connected to the PLC control box to facilitate real-time monitoring of the negative pressure data at the front end of the pressure test pump 5 .

[0021] In this embodiment, after completing the performance test, the maintenance circuit 2 needs to be squared, and an emptying branch 6 is set between the water tank 1 and the first gate valve 21. The emptying branch 6 is also set at a low position, and a third ball valve 28 is set at the rear end of the water tank 1. Before opening the fifth ball valve 61 on the emptying branch 6, the third ball valve 28 is closed to prevent the water in the maintenance circuit 2 from flowing back into the water tank 1.

[0022] The descriptions of the directional words such as "front" and "back" mentioned in this article are based on Figure 1 These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation;

[0023] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chemical pipe valve performance inspection platform, comprising an inspection circuit, characterized in that: It also includes a PLC control box. The maintenance circuit is a closed loop, on which a water tank, a first gate valve, a filter, a damping tube, a pressure test pump, a one-way valve and a detection branch are connected in series in sequence. The maintenance pipe valve is connected in series to the detection branch. A first ball valve and a second ball valve are connected in series on the detection branch. The maintenance pipe valve is located between the first ball valve and the second ball valve. The maintenance circuit is provided with a first pressure transmitter, a flow transmitter and a temperature transmitter. The pressure transmitter is located at the rear end of the pressure test pump, and the flow transmitter and the temperature transmitter are located at the rear end of the detection branch. The water tank is provided with a metal pressure gauge, a safety valve, an overflow pipeline and a sewage pipeline. The first pressure transmitter, the flow transmitter and the temperature transmitter are electrically connected to the PLC control box respectively.

2. The chemical pipe valve performance inspection platform according to claim 1 is characterized by: The detection branch is provided with a bypass branch in parallel, and the bypass branch is connected in series with a second gate valve.

3. The chemical pipe valve performance inspection platform according to claim 1 is characterized by: A pump filling pipeline is also arranged at the rear end of the pressure test pump. A sixth ball valve is arranged on the pump filling pipeline, and a pump filling funnel is arranged at the end thereof.

4. The chemical pipe valve performance inspection platform according to claim 3 is characterized by: The maintenance circuit is also provided with a reflux branch connected in parallel with the pressure test pump, one end of the reflux branch is connected to the front end of the one-way valve, a third gate valve is arranged on the reflux branch, and the first pressure transmitter is located between the filling pump pipeline and the pressure test pump.

5. The chemical pipe valve performance inspection platform according to claim 4 is characterized by: A second pressure transmitter is provided between the other end of the return branch and the damping tube, and the second pressure transmitter is electrically connected to the PLC control box.

6. The chemical pipe valve performance inspection platform according to claim 1 is characterized by: The maintenance circuit is also provided with a third ball valve and an emptying branch. The third ball valve is located at the rear end of the water tank. One end of the emptying branch is connected to the front end of the water tank, and the other end is provided with a fifth ball valve.

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