Wind and water pressure test bench

Abstract

The utility model discloses a wind and water pressure test bench, and belongs to the technical field of railway vehicle detection. A wind and water pressure test bench comprises a test bench body and further comprises a test water source, a test pipeline is fixedly arranged in the test bench body, and a pressure reducing valve and a first pressure stabilizing valve are sequentially and fixedly connected to a second pipeline; the test gas source is communicated with the test pipeline through a first pipeline, and the first pipeline is fixedly connected with a first pressure regulating valve and a second pressure stabilizing valve in sequence; according to the utility model, the first pressure regulating valve is added to stabilize the air inlet quantity of the test bed, ensure the stability of the air quantity entering the test bed and provide a stable power foundation for the system, and the second pressure stabilizing valve can more accurately regulate the air pressure, reduce the air pressure fluctuation and further finely control the air flow and the stability of the air pressure; and a first pressure stabilizing valve is arranged behind the pressure reducing valve on the second pipeline, so that the water pressure can be adjusted more accurately, the pressure fluctuation is reduced, and the water flow and the stability of the water pressure are further controlled finely.

Description

Technical Field

[0001] The utility model relates to the technical field of railway vehicle detection, in particular to a wind and water pressure test bench. Background Art

[0002] Train brake hose connectors are crucial components for connecting vehicles. Their quality is essential for railway train safety, with leakage and bulging being the primary causes of failure. According to the testing requirements for passenger car brake hoses in Railway General Transport (2014) No. 215, "Rules for the Maintenance of Air Brake Systems on Railway Passenger Cars," and Railway General Technology (2017) No. 239, "Interim Technical Conditions for 160 km / h Central Power Electric Multiple Units," train brake hose connectors must undergo air and water pressure testing. Leakage detection is performed on air and water pressure test benches.

[0003] During use, the system pressure of the existing wind and water pressure test bench is prone to instability, which affects the accuracy and reliability of the test. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that the pressure of the test bench is prone to instability during testing, and to propose a wind and water pressure test bench.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A wind and water pressure test bench includes a test bench body and also includes: a test water source, a test pipeline is fixedly arranged in the test bench body, a hose to be tested is arranged at one end of the test pipeline, the test water source is connected to the test pipeline through a second pipeline, and a pressure reducing valve and a first pressure stabilizing valve are fixedly connected to the second pipeline in sequence; a test air source, the test air source is connected to the test pipeline through a first pipeline, and a first pressure regulating valve and a second pressure stabilizing valve are fixedly connected to the first pipeline in sequence.

[0007] In order to ensure the pressure maintenance effect on the pipeline, preferably, a boosting pipeline is fixedly provided on the first pipeline, a boosting cylinder for boosting the second pipeline is fixedly provided on the boosting pipeline, two groups of one-way valves are fixedly provided on the second pipeline, the output end of the boosting cylinder is connected to the pipeline between the two groups of one-way valves, and a first reversing valve and a second pressure regulating valve are fixedly provided on the boosting pipeline, and one end of the boosting pipeline is connected to the pipeline between the first pressure regulating valve and the second pressure stabilizing valve.

[0008] In order to facilitate the control of the lifting and lowering of the mesh plate, a control pipeline is further fixedly arranged on the first pipeline, and the control pipeline is fixedly connected to the rotating cylinder and the lifting cylinder through the second reversing valve and the third reversing valve respectively, and a fourth reversing valve is fixedly arranged on the first pipeline, and the fourth reversing valve is located between the second pressure stabilizing valve and the input end of the boost pipeline.

[0009] In order to facilitate the testing of the hose to be tested, a water tank is further fixedly provided on the test bench body, and a first test plate and a second test plate are respectively raised and lowered in both ends of the water tank, a mesh plate is fixedly provided between the first test plate and the second test plate, and an adapter connected to one end of the hose to be tested is fixedly provided on the second test plate, and a mounting base connected to the other end of the hose to be tested is fixedly provided on the first test plate.

[0010] Furthermore, at least one group of mounting holes is provided on the mounting seat, a sealing ring is fixedly provided on the end face of the mounting hole mouth, a pipe joint is fixedly provided on the other end of the hose to be tested, and the pipe joint is abutted against the sealing ring, a clamping plate is slidably provided on the mounting seat, an avoidance groove is provided on the clamping plate, and one end of the clamping plate is abutted against the pipe joint, a screw is rotatably provided on the clamping plate, one end of the screw is threadedly connected to the mounting seat, and a knob is fixedly provided on the other end of the screw.

[0011] Furthermore, a lifting plate is fixedly provided on the top of the first test plate, the lifting plate is fixedly provided at the output end of the lifting cylinder, and guide rails are fixedly provided at both ends of the water tank, and guide grooves are provided on the first test plate and the second test plate, and the guide rails are respectively slidably connected to the corresponding guide grooves.

[0012] Compared with the existing technology, the utility model provides a wind and water pressure test bench with the following beneficial effects:

[0013] 1. The wind and water pressure test bench is equipped with a first pressure regulating valve and a second pressure stabilizing valve fixedly arranged on the first pipeline. The first pressure regulating valve is used to stabilize the air intake of the test bench, ensuring the stability of the air volume entering the test bench, and is the basis for providing stable power for the system. The second pressure stabilizing valve can more accurately adjust the air pressure, reduce air pressure fluctuations, and further finely control the air flow and air pressure stability. The first pressure stabilizing valve is arranged behind the pressure reducing valve on the second pipeline, which can more accurately adjust the water pressure, reduce pressure fluctuations, and further finely control the water flow and water pressure stability.

[0014] 2. The wind and water pressure test bench is designed to insert the pipe joint on the hose to be tested into the mounting hole, and then drive the screw to rotate through the knob, bringing the clamping plate closer to the pipe joint until the pipe joint is fixed in the mounting hole. It is easy to assemble and disassemble, and has reliable fixation, which can achieve non-destructive installation and increase the service life of the pipe joint.

[0015] The parts not involved in this device are the same as the existing technology or can be implemented by existing technology. The utility model can be used to stabilize the air intake of the test bench by adding a first pressure-regulating valve, ensuring the stability of the air volume entering the test bench, and providing a stable power basis for the system. The second pressure-stabilizing valve can adjust the air pressure more accurately, reduce air pressure fluctuations, and further finely control the air flow and air pressure stability. The first pressure-stabilizing valve is arranged behind the pressure-reducing valve on the second pipeline, which can more accurately adjust the water pressure, reduce pressure fluctuations, and further finely control the water flow and water pressure stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a wind and water pressure test bench proposed by the utility model;

[0017] Figure 2 This is a cross-sectional view of a wind and water pressure test bench proposed in the utility model;

[0018] Figure 3 A wind and water pressure test bench proposed by this utility model Figure 2 Enlarged view of part A;

[0019] Figure 4 This is a system principle diagram of a wind and water pressure test bench proposed by the utility model;

[0020] Figure 5 This is a structural schematic diagram of a hose to be tested on a wind and water pressure test bench proposed by the utility model.

[0021] In the figure: 1. Test bench body; 101. Water tank; 102. Guide rail; 2. First test plate; 201. Second test plate; 202. Mesh plate; 203. Mounting seat; 204. Adapter; 205. Mounting hole; 206. Sealing ring; 207. Lifting plate; 3. Clamping plate; 301. Avoidance groove; 302. Sealing gasket; 4. Screw; 401. Knob; 5. Test water source; 501. Test hose; 502. Pressure transmission device; 503. Booster cylinder; 504. Pressure reducing valve; 505. First pressure-stabilizing valve; 506. Second pressure-stabilizing valve; 6. Rotating cylinder; 601. Test air source; 602. Lifting cylinder; 603. First pressure-regulating valve; 604. Second pressure-regulating valve; 7. First pipeline; 701. Second pipeline; 702. Test pipeline; 703. Booster pipeline; 704. Control pipeline. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0024] Example:

[0025] Reference Figure 1-Figure 5 , a wind and water pressure test bench, including a test bench body 1, and also including: a test water source 5, a test pipeline 702 is fixedly arranged in the test bench body 1, a hose 501 to be tested is arranged on one end of the test pipeline 702, and a pressure transmission device 502 is fixedly arranged on the test pipeline 702, the test water source 5 is connected to the test pipeline 702 through the second pipeline 701, and a pressure reducing valve 504 and a first pressure stabilizing valve 505 are fixedly connected to the second pipeline 701 in sequence, and a control valve is also fixedly arranged on the second pipeline 701 to facilitate control of the on-off between the test water source 5 and the second pipeline 701; a test air source 601, the test air source 601 is connected to the test pipeline 702 through the first pipeline 7, the output end of the test air source 601 is connected to the first pipeline 7 through a pneumatic triplet, and the first pipeline 7 and the second pipeline 701 is connected to the test pipeline 702 through a four-way pipe. The remaining interface of the four-way pipe is fixedly connected to an exhaust and drain pipe with a valve. The first pressure regulating valve 603 and the second pressure stabilizing valve 506 are fixedly connected to the first pipeline 7 in sequence. When in use, the first pressure regulating valve 603 and the second pressure stabilizing valve 506 are fixedly arranged on the first pipeline 7. The first pressure regulating valve 603 is used to stabilize the air intake of the test bench to ensure the stability of the air volume entering the test bench, which is the basis for providing a stable power for the system. The second pressure stabilizing valve 506 can adjust the air pressure more accurately, reduce air pressure fluctuations, and further finely control the air flow and air pressure stability. The first pressure stabilizing valve 505 is arranged behind the pressure reducing valve 504 on the second pipeline 701, which can adjust the water pressure more accurately, reduce pressure fluctuations, and further finely control the water flow and water pressure stability.

[0026] Reference Figure 4A boosting pipeline 703 is fixedly provided on the first pipeline 7, and a boosting cylinder 503 for pressurizing the second pipeline 701 is fixedly provided on the boosting pipeline 703, and two groups of one-way valves are fixedly provided on the second pipeline 701, and the directions of the two groups of one-way valves are the same, and the output end of the boosting cylinder 503 is connected to the pipeline between the two groups of one-way valves, and a first reversing valve and a second pressure regulating valve 604 are fixedly provided on the boosting pipeline 703, and one end of the boosting pipeline 703 is connected to the pipeline between the first pressure regulating valve 603 and the second pressure stabilizing valve 506. When in use, by fixing the second pressure stabilizing valve 506 on the boosting pipeline 703, the test bench ensures the pressure maintaining effect on the pipeline during the test, effectively preventing the pressure from dropping suddenly during the test, and ensuring the accuracy and reliability of the test.

[0027] Reference Figure 4 A control pipeline 704 is fixedly provided on the first pipeline 7, and the rotating cylinder 6 and the lifting cylinder 602 are fixedly connected to the control pipeline 704 through the second reversing valve and the third reversing valve respectively, and a fourth reversing valve is fixedly provided on the first pipeline 7. The fourth reversing valve is located between the second pressure-stabilizing valve 506 and the input end of the boosting pipeline 703. When in use, the control pipeline 704 is fixedly provided on the first pipeline 7 to facilitate the control of the lifting and lowering of the lifting plate 207.

[0028] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 5 A water tank 101 is fixedly provided on the test bench body 1, and a first test plate 2 and a second test plate 201 are respectively raised and lowered in both ends of the water tank 101. A mesh plate 202 is fixedly provided between the first test plate 2 and the second test plate 201, and an adapter 204 connected to one end of the hose 501 to be tested is fixedly provided on the second test plate 201, and a mounting seat 203 connected to the other end of the hose 501 to be tested is fixedly provided on the first test plate 2. When in use, by arranging the first test plate 2 and the second test plate 201 in the water tank 101, it is convenient to connect the hose 501 to be tested, thereby improving the use effect.

[0029] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 5At least one group of mounting holes 205 is provided on the mounting seat 203. Here, we provide five groups of mounting holes 205 at equal intervals. A sealing ring 206 is fixedly provided on the end face of the mouth of the mounting hole 205. A pipe joint is fixedly provided on the other end of the hose 501 to be tested. The pipe joint includes a threaded pipe and a hexagonal block. The threaded pipe on the pipe joint is extended into the mounting hole 205 so that one end face of the hexagonal block abuts against the sealing ring 206. A clamping plate 3 is slidably provided on the mounting seat 203. An avoidance groove 301 is provided on the clamping plate 3. One end of the clamping plate 3 abuts against the other end face of the hexagonal block on the pipe joint. When the clamping plate 3 is close to the mounting hole 205, the clamping plate 3 is provided with a clearance groove 301. A sealing gasket 302 is fixedly provided on the end face, and the sealing gasket 302 is preferably abutted against the other end face of the hexagonal block on the pipe joint. A screw 4 is rotatably provided on the clamping plate 3, and the screw 4 is preferably symmetrically provided in two groups, and one end of the screw 4 is threadedly connected to the mounting seat 203. A knob 401 is fixedly provided on the other end of the screw 4. When in use, the pipe joint on the hose 501 to be tested is inserted into the mounting hole 205, and then the screw 4 is driven to rotate through the knob 401, and the clamping plate 3 is brought closer to the pipe joint until the pipe joint is fixed in the mounting hole 205. The assembly and disassembly is convenient, the fixation is reliable, and lossless installation can be achieved, thereby improving the service life of the pipe joint. After the connection is completed, a test channel connected to the mounting hole 205 is opened in the mounting seat 203. The test channel is connected to the test pipeline 702, which can be convenient for testing. In the prior art, the pipe joint is usually directly threaded into the mounting hole 205. This connection method will inevitably damage the threads on the pipe joint, affecting the service life.

[0030] Reference Figure 1 and Figure 2 A lifting plate 207 is fixedly provided on the top of the first test plate 2, and the lifting plate 207 is fixedly provided at the output end of the lifting cylinder 602, and guide rails 102 are fixedly provided at both ends of the water tank 101. Guide grooves are provided on the first test plate 2 and the second test plate 201, and the two sets of guide rails 102 are slidably connected to the corresponding guide grooves respectively. When in use, the lifting plate 207 is driven to rise and fall by the lifting cylinder 602, and the first test plate 2, the second test plate 201 and the mesh plate 202 can be lifted and lowered to realize water testing of the hose 501 to be tested, thereby improving the use effect.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wind and water pressure test bench, comprising a test bench body (1), characterized in that: Also includes: A test water source (5), a test pipeline (702) is fixedly provided in the test bench body (1), a hose to be tested (501) is provided at one end of the test pipeline (702), the test water source (5) is connected to the test pipeline (702) through a second pipeline (701), and a pressure reducing valve (504) and a first pressure stabilizing valve (505) are fixedly connected to the second pipeline (701) in sequence; A test gas source (601) is connected to a test pipeline (702) via a first pipeline (7), and a first pressure regulating valve (603) and a second pressure stabilizing valve (506) are fixedly connected to the first pipeline (7) in sequence.

2. A wind and water pressure test bench according to claim 1, characterized in that: A boosting pipeline (703) is fixedly provided on the first pipeline (7), a boosting cylinder (503) for boosting the second pipeline (701) is fixedly provided on the boosting pipeline (703), two sets of one-way valves are fixedly provided on the second pipeline (701), an output end of the boosting cylinder (503) is connected to the pipeline between the two sets of one-way valves, and a first reversing valve and a second pressure regulating valve (604) are fixedly provided on the boosting pipeline (703), and one end of the boosting pipeline (703) is connected to the pipeline between the first pressure regulating valve (603) and the second pressure stabilizing valve (506).

3. A wind and water pressure test bench according to claim 2, characterized in that: A control pipeline (704) is fixedly provided on the first pipeline (7), and the control pipeline (704) is fixedly connected to the rotating cylinder (6) and the lifting cylinder (602) through the second reversing valve and the third reversing valve, respectively. A fourth reversing valve is fixedly provided on the first pipeline (7), and the fourth reversing valve is located between the second pressure stabilizing valve (506) and the input end of the boosting pipeline (703).

4. A wind and water pressure test bench according to claim 3, characterized in that: A water tank (101) is fixedly provided on the test bench body (1), and a first test plate (2) and a second test plate (201) are respectively provided in both ends of the water tank (101) for lifting and lowering. A mesh plate (202) is fixedly provided between the first test plate (2) and the second test plate (201), and an adapter (204) connected to one end of a hose to be tested (501) is fixedly provided on the second test plate (201), and a mounting seat (203) connected to the other end of the hose to be tested (501) is fixedly provided on the first test plate (2).

5. A wind and water pressure test bench according to claim 4, characterized in that: At least one group of mounting holes (205) is provided on the mounting seat (203), and a sealing ring (206) is fixedly provided on the end surface of the mouth of the mounting hole (205). A pipe joint is fixedly provided on the other end of the hose (501) to be tested, and the pipe joint abuts against the sealing ring (206). A clamping plate (3) is slidably provided on the mounting seat (203), and an avoidance groove (301) is provided on the clamping plate (3), and one end of the clamping plate (3) abuts against the pipe joint. A screw rod (4) is rotatably provided on the clamping plate (3), and one end of the screw rod (4) is threadedly connected to the mounting seat (203), and a knob (401) is fixedly provided on the other end of the screw rod (4).

6. A wind and water pressure test bench according to claim 5, characterized in that: A lifting plate (207) is fixedly provided on the top of the first test plate (2), and the lifting plate (207) is fixedly provided at the output end of the lifting cylinder (602). Guide rails (102) are fixedly provided in both ends of the water tank (101), and guide grooves are provided on both the first test plate (2) and the second test plate (201), and the guide rails (102) are respectively slidably connected to the corresponding guide grooves.

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