Valve pressure testing machine with caliber adjusting structure

Abstract

The utility model discloses a valve pressure testing machine with a caliber adjusting structure, which comprises an operation table and a detection table arranged on one side of the operation table, the top of the detection table is fixedly connected with a fixed frame of a C-shaped structure, the top of the fixed frame is fixedly connected with an electric push rod, and the bottom of a piston rod of the electric push rod is fixedly connected with a movable plate. The bottom of the movable plate and the bottom of the fixed frame are fixedly connected with gas conveying pipes. The opposite ends of the two gas conveying pipes are provided with pressure testing assemblies. The pressure test assembly comprises a rotary joint, a plurality of connecting pipes, a plurality of control valves and a plurality of pressure test heads, wherein the fixed end of the rotary joint is fixedly connected with the gas conveying pipe, the connecting pipes are fixedly connected to the rotary end of the rotary joint, the control valves are arranged on the outer sides of the corresponding connecting pipes, and the pressure test heads are fixedly connected to the ends of the corresponding connecting pipes. Through the structure, the pressure test heads with different calibers are arranged, so that the device is suitable for valves with different calibers, the operation is simple, and the use is flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of valve detection equipment, in particular to a valve pressure testing machine with a caliber adjustment structure. Background Art

[0002] The valve pressure tester is an important equipment in the valve production process, which is used to test the sealing performance and pressure bearing capacity of the valve. The traditional valve pressure tester is usually only suitable for valves of a specific caliber. For valves of different calibers, the corresponding pressure test head and fixture need to be replaced, which is cumbersome and inefficient to operate.

[0003] In the prior art, after searching, it was found that a Chinese patent disclosed a valve pressure tester, whose application number is 202223011247.2. The patent mainly includes an operating table, a test table is fixedly connected to the right side of the operating table, a connecting end is installed on the top of the inner wall of the test table, a sealing head is sleeved on the surface of the connecting end, a transmission groove is opened inside the connecting end, a rotating rod is arranged inside the transmission groove, the top and bottom of the rotating rod are movably connected to the inner wall of the transmission groove through a sleeve, a first gear is fixedly connected to the surface of the rotating rod, a second gear is meshed on the left side of the first gear, and the left side of the second gear runs through the outside of the connecting end, and a motor is fixedly connected to the left side of the connecting end, and the output end of the motor is fixedly connected to the top of the second gear. Although the above utility model can disassemble and assemble sealing heads of different sizes, it saves equipment costs and enhances the practicality of the pressure tester. However, although the replacement of the sealing head by disassembly and assembly work improves the versatility of the equipment to a certain extent, it still needs to be cumbersomely disassembled and assembled for the replacement of sealing heads of commonly used calibers, which affects the convenience and efficiency of operation and is not convenient enough to use. Therefore, those skilled in the art provide a valve pressure testing machine with a caliber adjustment structure to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to provide a valve pressure tester with a caliber adjustment structure. By setting pressure test heads of different calibers and opening the corresponding control valves, the on-off state of the pressure test head can be adjusted when the other control valves are in the disconnected state. This makes it easy to be used with valves of different calibers, and the operation is simple and the use is flexible.

[0005] To achieve the above-mentioned purpose, a valve pressure tester with a caliber adjustment structure is provided, comprising an operating table and a detection table arranged on one side of the operating table, the top of the detection table is fixedly connected to a fixed frame of a C-shaped structure, the top of the fixed frame is fixedly connected to an electric push rod, the bottom of the piston rod of the electric push rod is fixedly connected to a movable plate, the bottom of the movable plate and the bottom of the fixed frame are both fixedly connected to air pipes, and the ends of the two air pipes facing each other are both provided with pressure test components;

[0006] The pressure test assembly includes a rotating joint whose fixed end is fixedly connected to the gas pipe, a plurality of connecting pipes fixedly connected to the rotating end of the rotating joint, a plurality of control valves arranged on the outside of the corresponding connecting pipes and a plurality of pressure test heads fixedly connected to the ends of the corresponding connecting pipes, wherein the plurality of pressure test heads are arranged to have structures with different calibers.

[0007] According to the valve pressure testing machine with a caliber adjustment structure, the outer sides of the two air delivery pipes are connected with air inlet and outlet pipes, one of the two air inlet and outlet pipes is the air inlet pipe, and the other is the air outlet pipe.

[0008] According to the valve pressure testing machine with a caliber adjustment structure, the two rotary joints are fixedly connected to the corresponding gas pipes via flanges.

[0009] According to the valve pressure tester with a caliber adjustment structure, sealing gaskets are fixedly connected to the opposite sides of the plurality of pressure test heads.

[0010] According to the valve pressure testing machine with a caliber adjustment structure, two guide rods are symmetrically fixedly connected between the top and the bottom of the fixed frame, and the movable plate is slidably connected to the two guide rods.

[0011] According to the valve pressure testing machine with a caliber adjustment structure, the bottoms of the operating table and the testing table are fixedly connected to a bottom plate, and the bottom of the bottom plate is fixedly connected to four supporting feet symmetrically and equidistantly.

[0012] The utility model has the following beneficial effects:

[0013] Compared with the prior art, this valve pressure testing machine with a caliber adjustment structure, by setting pressure testing heads of different calibers and opening the corresponding control valves, makes the other control valves in the disconnected state, and can adjust the on-off state of the pressure testing head. It is convenient to be used with valves of different calibers, and is simple to operate and flexible to use.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the overall structure of a valve pressure testing machine with a caliber adjustment structure according to the utility model;

[0017] Figure 2 This is a schematic diagram of the first part of the structure of a valve pressure testing machine with a caliber adjustment structure according to the utility model;

[0018] Figure 3 This is a schematic diagram of the second part of the structure of a valve pressure testing machine with a caliber adjustment structure according to the utility model;

[0019] Figure 4 The utility model is a valve pressure testing machine with a caliber adjustment structure. Figure 2 Enlarged structural diagram at A in the middle.

[0020] Legend:

[0021] 1. Base plate; 2. Operating table; 3. Testing table; 4. Fixed frame; 5. Electric push rod; 6. Movable plate; 7. Gas pipe; 8. Inlet and outlet pipes; 9. Flange; 10. Rotary joint; 11. Connecting pipe; 12. Control valve; 13. Pressure test head; 14. Sealing gasket; 15. Guide rod; 16. Support foot. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0023] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model embodiment is a valve pressure tester with a caliber adjustment structure, which includes an operating table 2 and a detection table 3 arranged on one side of the operating table 2, a C-shaped fixed frame 4 is fixed on the top of the detection table 3, an electric push rod 5 is fixedly connected to the top of the fixed frame 4, a movable plate 6 is fixed to the bottom of the piston rod of the electric push rod 5, the bottom of the movable plate 6 and the bottom of the fixed frame 4 are both fixedly connected to the air pipe 7, and the two air pipes 7 are provided with a pressure test assembly at one end facing each other; the pressure test assembly includes a rotary joint 10 fixedly connected to the air pipe 7 at a fixed end, a plurality of connecting pipes 11 fixedly connected to the rotating end of the rotary joint 10, a plurality of control valves 12 arranged on the outside of the corresponding connecting pipes 11 and a plurality of pressure test heads 13 fixedly connected to the ends of the corresponding connecting pipes 11, and the plurality of pressure test heads 13 are arranged to have structures of different calibers;

[0024] The valve is placed between two opposite pressure test heads 13. When the electric push rod 5 operates and pushes the movable plate 6 downward, the upper pressure test head 13 can be driven to move downward to fit with the end of the valve, so that an air flow channel can be formed through the connection between the two pressure test heads 13 and the valve. The control valve 12 connected to the valve can be opened to realize the connection operation of the rotary joint 10, the connecting pipe 11 and the pressure test head 13, so as to facilitate subsequent testing. Pressure test heads 13 of different calibers are set to be applicable to valves of different calibers. By opening the corresponding control valve 12 and making the other control valves 12 in the disconnected state, the on-off state of the pressure test head 13 can be adjusted. The operation is simple and flexible.

[0025] Reference Figure 2 and Figure 4 , inlet and outlet pipes 8 are provided on the outside of the two gas delivery pipes 7. One of the inlet and outlet pipes 8 is an inlet pipe, and the other is an outlet pipe. The inlet and outlet pipe 8 as the inlet pipe delivers gas to the inside of the rotary joint 10 and then delivers it to the inside of the valve through the pressure test head 13. The other inlet and outlet pipe 8 as the outlet pipe can be used to deliver gas out, so as to form air circulation inside the valve to test the sealing or pressure resistance performance.

[0026] Reference Figure 2 , Figure 3 and Figure 4 The two rotary joints 10 are fixedly connected to the corresponding gas pipes 7 through flanges 9. The flanges 9 are connected to the gas pipes 7. The connection is stable and easy to disassemble and assemble, so that another set of pressure test heads 13 with different calibers can be replaced according to actual needs, which is more flexible to use.

[0027] Reference Figure 3 and Figure 4 The facing sides of the plurality of pressure test heads 13 are all fixedly connected with sealing gaskets 14, and the sealing gaskets 14 can well seal the connection between the pressure test heads 13 and the valve, thereby ensuring good sealing of the valve and facilitating the accuracy of the test results.

[0028] Reference Figure 1 , Figure 2 and Figure 3 Two guide rods 15 are symmetrically fixedly connected between the top and the bottom of the fixed frame 4, and the movable plate 6 is slidably connected to the two guide rods 15. When the electric push rod 5 drives the movable plate 6 to move downward, it slides on the outside of the guide rods 15. The movable plate 6 sliding in cooperation with the guide rods 15 is conducive to ensuring the stability of movement.

[0029] Reference Figure 1The bottom of the operating table 2 and the testing table 3 are fixedly connected with a base plate 1, and the bottom of the base plate 1 is symmetrically and equidistantly fixed with four supporting feet 16. The base plate 1 can be used for fixing the operating table 2 and the testing table 3, and can be used to stably support the base plate 1 under the action of the supporting feet 16 at the bottom.

[0030] Working principle: Rotate the rotary joint 10 according to the diameter of the valve so that the corresponding pressure test head 13 moves to the front side, and place the valve between the two opposite pressure test heads 13. When the electric push rod 5 runs and pushes the movable plate 6 downward, it can drive the upper pressure test head 13 to move downward and fit with the end of the valve, so that an air circulation channel can be formed through the connection between the two pressure test heads 13 and the valve. Open the control valve 12 connected to the valve to realize the connection operation of the rotary joint 10, the connecting pipe 11 and the pressure test head 13. The inlet and outlet pipes 8 as the air inlet pipe transport the gas to the inside of the rotary joint 10 and then transport it to the inside of the valve through the pressure test head 13. The other inlet and outlet pipe 8 as the air outlet pipe can be used to transport the gas out, thereby forming air circulation inside the valve to test the sealing or pressure resistance performance;

[0031] The pressure test heads 13 with different calibers are provided to be applicable to valves with different calibers. By opening the corresponding control valve 12 and making the other control valves 12 in the disconnected state, the on-off state of the pressure test head 13 can be adjusted. The operation is simple and the use is flexible.

[0032] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A valve pressure testing machine with a caliber adjustment structure, comprising an operating table (2) and a testing table (3) arranged on one side of the operating table (2), characterized in that: The top of the test platform (3) is fixedly connected to a fixed frame (4) of a C-shaped structure, the top of the fixed frame (4) is fixedly connected to an electric push rod (5), the bottom of the piston rod of the electric push rod (5) is fixedly connected to a movable plate (6), the bottom of the movable plate (6) and the bottom of the fixed frame (4) are both fixedly connected to an air pipe (7), and the two ends of the air pipes (7) facing each other are both provided with a pressure test assembly; The pressure test assembly comprises a rotary joint (10) whose fixed end is fixedly connected to the gas transmission pipe (7), a plurality of connecting pipes (11) fixedly connected to the rotating end of the rotary joint (10), a plurality of control valves (12) arranged on the outside of the corresponding connecting pipes (11), and a plurality of pressure test heads (13) fixedly connected to the ends of the corresponding connecting pipes (11), wherein the plurality of pressure test heads (13) are arranged to have structures with different calibers.

2. A valve pressure testing machine with a caliber adjustment structure according to claim 1, characterized in that: The outer sides of the two air delivery pipes (7) are both connected to air inlet and outlet pipes (8), and one of the two air inlet and outlet pipes (8) is an air inlet pipe, and the other is an air outlet pipe.

3. A valve pressure testing machine with a caliber adjustment structure according to claim 2, characterized in that: The two rotary joints (10) are fixedly connected to the corresponding gas pipes (7) via flanges (9).

4. A valve pressure testing machine with a caliber adjustment structure according to claim 3, characterized in that: The facing sides of the plurality of pressure test heads (13) are all fixedly connected with sealing pads (14).

5. The valve pressure testing machine with a caliber adjustment structure according to claim 4, characterized in that: Two guide rods (15) are symmetrically fixedly connected between the top and the bottom of the fixed frame (4), and the movable plate (6) is slidably connected to the two guide rods (15).

6. The valve pressure testing machine with a caliber adjustment structure according to claim 1, characterized in that: The bottoms of the operating table (2) and the testing table (3) are fixedly connected to a base plate (1), and the bottom of the base plate (1) is fixedly connected to four supporting legs (16) at equal distances and symmetrically.

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