High-pressure water measuring machine

Abstract

The invention discloses a high-pressure water testing machine, and relates to the technical field of water pressure testing equipment, the high-pressure water testing machine comprises a rack, a suspended lower sealing tool is fixedly arranged at the upper part of the rack, an upper sealing tool capable of sliding up and down is arranged right above the lower sealing tool, the upper sealing tool is arranged on a tool moving mechanism, and the tool moving mechanism is arranged on the rack. The tool moving mechanism is arranged on the rack; a water tank capable of sliding up and down is arranged below the lower sealing tool, the water tank is arranged on a water tank lifting mechanism, and the water tank lifting mechanism is arranged at the bottom of the rack; the upper sealing tool and the lower sealing tool are respectively communicated with a scavenging valve group through air pipes, and the scavenging valve group is connected with an air supply assembly. According to the invention, after the test valve is clamped by the upper sealing tool and the lower sealing tool, the air tightness detection can be carried out on the shell, the upper cavity and the lower cavity of the test valve by using the scavenging valve group, the sealing tools do not need to be disassembled frequently, the operation process is simple and convenient, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrostatic pressure testing equipment, and particularly to a high-pressure water tester, and more particularly to a high-pressure water tester capable of performing main seal and high-pressure airtightness detection on a ball valve and its housing. Background Art

[0002] At present, for the high-pressure airtightness detection of a ball valve, a self-made tooling is mainly used. First, both the upper and lower cavities of the ball valve are sealed with the tooling, and the ball valve is opened to connect the upper and lower cavities. Then, it is immersed in water and continuously inflated into the ball valve, and the phenomenon of bubbling is observed. This is the process of housing airtightness testing. Then, the ball valve is closed, the lower cavity of the ball valve is sealed, and air is continuously inflated into the upper cavity, and the phenomenon of bubbling is observed. Similarly, the upper cavity of the ball valve is sealed, and air is continuously inflated into the lower cavity, and the phenomenon of bubbling is observed. This is the process of main seal airtightness testing. The whole process requires continuous disassembly and assembly of the sealing tooling, with a large labor intensity and frequent assembly times, resulting in a cumbersome and inefficient testing process. Summary of the Invention

[0003] The purpose of the present invention is to provide a high-pressure water tester to solve the problems of continuous disassembly and assembly of the sealing tooling, frequent assembly times, cumbersome process, and low efficiency in the immersion airtightness detection of the self-made tooling-sealed ball valve mentioned in the background art.

[0004] The present invention adopts the following technical solutions:

[0005] A high-pressure water tester of the present invention includes a frame. A suspended lower sealing tooling is fixedly arranged on the upper part of the frame. An upper sealing tooling that can slide up and down is arranged directly above the lower sealing tooling. The upper sealing tooling is arranged on a tooling moving mechanism, and the tooling moving mechanism is arranged on the frame;

[0006] A water tank that can slide up and down is arranged below the lower sealing tooling. The water tank is arranged on a water tank lifting mechanism, and the water tank lifting mechanism is arranged at the bottom of the frame;

[0007] The upper sealing tooling and the lower sealing tooling are respectively connected to a gas exchange valve group through air pipes, and the gas exchange valve group is connected to a gas supply component.

[0008] Preferably, the tooling moving mechanism includes an upper fixing plate, a ball screw pair, and a sliding plate;

[0009] The upper fixing plate is fixedly arranged on the upper part of the frame. Vertical columns are arranged on both sides of the lower end surface of the upper fixing plate. The lower ends of the columns are fixedly connected to a suspension plate, and the lower sealing tooling is arranged in the middle of the upper end surface of the suspension plate;

[0010] Two first guide slide rods arranged vertically are provided between the upper fixed plate and the suspension plate, the first guide slide rods are arranged on both sides of the lower sealing fixture, the sliding plate is slidably connected to the first guide slide rods, and the upper sealing fixture is fixedly connected to the lower end surface of the sliding plate;

[0011] The ball screw pair includes a screw and a screw nut, the screw nut is rotatably connected to the screw, the lower end of the screw is fixedly connected to the sliding plate, the outer wall of the screw nut is rotatably connected to the upper fixed plate, and the screw nut is transmission-connected to the driving assembly.

[0012] Preferably, the drive assembly includes a motor, which is fixedly connected to the upper fixed plate, and the output shaft of the motor is fixedly connected to the rotation axis of the first gear, the first gear is meshingly connected to the second gear, the second gear is fixedly connected to the outer wall of the screw nut, and the rotation axis of the second gear coincides with the rotation axis of the screw nut and the screw.

[0013] Preferably, the water tank lifting mechanism comprises a chain, one end of the chain is fixedly connected to a fixed base, the fixed base is fixedly arranged in the frame, the other end of the chain is fixedly connected to the water tank support plate after passing through the sprocket, and the sprocket is located above both ends of the chain;

[0014] The sprocket is rotatably arranged on a lifting plate that can slide up and down, and the lifting plate is connected to the lifting drive part;

[0015] The water tank is fixedly connected to the water tank support plate, a vertical slide is arranged on the back plate of the water tank support plate, the vertical slide is slidably arranged on the vertical slide rail, and both ends of the vertical slide rail are fixedly connected to the frame.

[0016] Preferably, one end of the chain is fixedly connected to the fixed base via a long bolt, and the other end of the chain is fixedly connected to the water tank support plate via the long bolt.

[0017] Preferably, the lifting drive unit comprises a lifting cylinder and a second guide slide rod arranged vertically;

[0018] The lifting cylinder is fixedly arranged on the fixed base, the telescopic end of the lifting cylinder is fixedly connected to the lower surface of the lifting plate, guide sliding holes are arranged on both sides of the lifting plate, the second guide sliding rod is slidably arranged in the guide sliding holes, and the two ends of the second guide sliding rod are fixedly connected to the frame.

[0019] Preferably, the upper sealing tool is a bottomless cylindrical structure, and an upper cavity air inlet is provided on the side wall of the upper sealing tool;

[0020] The lower sealing tooling is a bottomless cylindrical structure, and a lower cavity air inlet is arranged on the side wall of the lower sealing tooling;

[0021] Both the lower cavity air inlet and the upper cavity air inlet are connected to the air change valve group through air pipes.

[0022] Preferably, the air change valve group includes an upper cavity testing part, a testing function switching part, and a lower cavity testing part;

[0023] The upper cavity testing part includes a first shell, a first cavity is arranged inside the first shell, a first upper air duct communicated with the first cavity is arranged on the side wall of the first shell, a first moving sealing rod is arranged inside the first shell in a sliding and sealing connection manner, and the first moving sealing rod extends into the first cavity. A first plugging valve core is arranged at the end of the first moving sealing rod located inside the first cavity. The communication port between the first upper air duct and the first cavity is in plugging cooperation with the top surface of the first plugging valve core. The end of the first moving sealing rod located outside the first cavity is fixedly connected to the telescopic end of a first air cylinder, and the first air cylinder is fixedly connected to the first shell;

[0024] A first lower air duct is arranged at the center of the bottom of the first cavity, the first lower air duct is in plugging cooperation with the bottom surface of the first plugging valve core, a first air inlet duct is arranged at the bottom edge of the first cavity, and the first air inlet duct is always communicated with the first cavity;

[0025] The testing function switching part includes: a second shell, a second cavity, a second upper air duct, a second moving sealing rod, a second plugging valve core, a second air cylinder, a second lower air duct, a second air inlet duct. The structure of the testing function switching part is the same as that of the upper cavity testing part;

[0026] The lower cavity testing part includes: a third shell, a third cavity, a third upper air duct, a third moving sealing rod, a third plugging valve core, a third air cylinder, a third lower air duct, a third air inlet duct. The structure of the lower cavity testing part is the same as that of the upper cavity testing part;

[0027] The first upper air duct and the third upper air duct are respectively connected to the air supply component through air pipes;

[0028] The first lower air duct and the third lower air duct are respectively connected to the second air inlet duct through air pipes. The second lower air duct is connected to an external water injection water cup through an air pipe;

[0029] The first air inlet duct is connected to the upper cavity air inlet through an air pipe, and the third air inlet duct is connected to the lower cavity air inlet through an air pipe.

[0030] Preferably, the air supply assembly includes a gas storage cylinder and a gas pipeline assembly provided with a valve. The first upper airway and the third upper airway are respectively connected to the gas storage cylinder through the gas pipeline assembly.

[0031] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0032] The present invention clamps the test valve by using an upper sealing tooling and a lower sealing tooling, and raises the water tank to submerge the test valve in water. The test valve is inflated through the air supply assembly and the air exchange valve group, and the airtightness of the test valve housing is judged by observing whether there are bubbles; when testing the main seal of the test valve, only need to operate the air exchange valve group to switch to respectively detect the airtightness of the upper and lower cavities of the test valve. The whole process does not require frequent disassembly of the sealing tooling, the operation process is simple, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below with reference to the drawings.

[0034] Figure 1 It is the front view of the high-pressure water testing machine of the present invention;

[0035] Figure 2 It is the side view of the high-pressure water testing machine of the present invention;

[0036] Figure 3 It is the schematic diagram of the effect when the high-pressure water testing machine of the present invention clamps the test valve;

[0037] Figure 4 It is the schematic diagram of the structure of the tooling moving mechanism in the high-pressure water testing machine of the present invention;

[0038] Figure 5 It is the schematic diagram of the structure of the driving assembly in the high-pressure water testing machine of the present invention;

[0039] Figure 6 It is the front view of the water tank lifting mechanism in the high-pressure water testing machine of the present invention;

[0040] Figure 7 It is the schematic diagram of the structure of the water tank lifting mechanism in the high-pressure water testing machine of the present invention;

[0041] Figure 8 It is the schematic diagram of the structure of the chain and sprocket in the high-pressure water testing machine of the present invention;

[0042] Figure 9 It is the side view of the water tank lifting mechanism in the high-pressure water testing machine of the present invention;

[0043] Figure 10 It is the front view of the air exchange valve group in the high-pressure water testing machine of the present invention;

[0044] Figure 11Schematic diagram of the upper cavity test part in the air exchange valve group of the high-pressure water tester of the present invention;

[0045] Figure 12 Cross-sectional view of the upper cavity test part in the air exchange valve group of the high-pressure water tester of the present invention;

[0046] Figure 13 Schematic diagram of the state of the air exchange valve group when the high-pressure water tester of the present invention is in the stage of testing the airtightness of the valve housing;

[0047] Figure 14 Schematic diagram of the state of the air exchange valve group when the high-pressure water tester of the present invention is in the stage of exhausting the lower cavity of the valve;

[0048] Figure 15 Schematic diagram of the state of the air exchange valve group when the high-pressure water tester of the present invention is in the stage of testing the main seal of the valve;

[0049] Figure 16 Pneumatic circuit diagram of the high-pressure water tester of the present invention;

[0050] Figure 17 Working flow chart of the high-pressure water tester of the present invention.

[0051] Description of the reference numerals: 1. Tool moving mechanism; 1-1. Upper fixing plate; 1-2. Support column; 1-3. First guide slide bar; 1-4. Sliding plate; 1-5. Driving assembly; 1-5-1. Motor; 1-5-2. First gear; 1-5-3. Second gear; 1-6. Ball screw pair; 1-6-1. Screw; 1-6-2. Screw nut; 1-7. Suspension plate; 2. Frame; 3. Lower sealing tool; 3-1. Upper air inlet hole; 4. Upper sealing tool; 4-1. Lower air inlet hole; 5. Air change valve group; 5-1. Upper cavity testing part; 5-1-1. First housing; 5-1-2. First cavity; 5-1-3. First upper air duct; 5-1-4. First dynamic sealing rod; 5-1-5. First plugging valve core; 5-1-6. First cylinder; 5-1-7. First lower air duct; 5-1-8. First air inlet duct; 5-2. Testing function switching part; 5-2-1. Second housing; 5-2-2. Second cavity; 5-2-3. Second upper air duct; 5-2-4. Second dynamic sealing rod; 5-2-5. Second plugging valve core; 5-2-6. Second cylinder; 5-2-7. Second lower air duct; 5-2-8. Second air inlet duct; 5-3. Lower cavity testing part; 5-3-1. Third housing; 5-3-2. Third cavity; 5-3-3. Third upper air duct; 5-3-4. Third dynamic sealing rod; 5-3-5. Third plugging valve core; 5-3-6. Third cylinder; 5-3-7. Third lower air duct; 5-3-8. Third air inlet duct; 6. Air supply assembly; 6-1. Gas storage cylinder; 6-2. Gas pipeline assembly; 7. Water tank; 8. Water tank lifting mechanism; 8-1. Fixed base; 8-2. Chain; 8-3. Sprocket; 8-4. Water tank support plate; 8-5. Lifting plate; 8-5-1. Guide slide hole; 8-6. Lifting driving part; 8-6-1. Lifting cylinder; 8-6-2. Second guide slide bar; 8-7. Vertical slide rail; 8-8. Vertical slide way; 8-9. Long bolt; 9. Testing valve. Detailed implementation manners

[0052] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0053] As Figures 1 to 3As shown, a high-pressure water test machine is disclosed in this embodiment, including a frame 2, a suspended lower sealing tool 3 is fixedly provided on the upper part of the frame 2, an upper sealing tool 4 that can slide up and down is provided just above the lower sealing tool 3, and the upper sealing tool 4 is provided on a tool moving mechanism 1, and the tool moving mechanism 1 is provided on the frame 2. A water tank 7 that can slide up and down is provided below the lower sealing tool 3, and the water tank 7 is provided on a water tank lifting mechanism 8, and the water tank lifting mechanism 8 is provided at the bottom of the frame 2. The upper sealing tool 4 and the lower sealing tool 3 are respectively connected to the air exchange valve group 5 through the air pipe, and the air exchange valve group 5 is connected to the air supply component 6. When working, the upper sealing tool 4 and the lower sealing tool 3 are used to clamp and seal the two cavities of the test valve 9, the water tank lifting mechanism 8 drives the water tank 7 to rise and submerge the test valve 9, and the air exchange valve group 5 and the air supply component 6 are used to inflate the test valve 9 and perform air tightness detection.

[0054] In this embodiment, the gas supply assembly 6 includes a gas storage bottle 6-1 and a gas pipeline assembly 6-2 provided with a valve, and the gas exchange valve assembly 5 is connected to the gas storage bottle 6-1 through the gas pipeline assembly 6-2.

[0055] like Figure 4 and Figure 5 As shown, the tool moving mechanism 1 includes an upper fixed plate 1-1, a ball screw pair 1-6 and a sliding plate 1-4. Both sides of the upper fixed plate 1-1 are fixedly connected to the top of the frame 2 by bolt assemblies, and both sides of the lower end surface of the upper fixed plate 1-1 are provided with vertically arranged pillars 1-2 facing downward, and the lower ends of the pillars 1-2 are fixedly connected with a suspension plate 1-7, and the lower sealing tool 3 is fixedly arranged in the middle of the upper end surface of the suspension plate 1-7. Two vertically arranged first guide slides 1-3 are provided between the upper fixed plate 1-1 and the suspension plate 1-7, and the first guide slides 1-3 are arranged on both sides of the lower sealing tool 3, and the sliding plate 1-4 is slidably connected to the first guide slides 1-3, and the upper sealing tool 4 is fixedly connected to the lower end surface of the sliding plate 1-4, and the upper sealing tool 4 is located directly above the lower sealing tool 3. There is a gap between the suspension plate 1-7 and the frame 2 to facilitate the water tank 7 to rise and immerse the lower sealing tooling 3 and the upper sealing tooling 4 after the mold is closed.

[0056] The ball screw pair 1-6 includes a screw 1-6-1 and a screw nut 1-6-2, the screw nut 1-6-2 is rotatably connected to the screw 1-6-1, and a ball is arranged between the screw 1-6-1 and the screw nut 1-6-2, and the rotational motion is converted into linear motion by the rolling of the ball between the screw 1-6-1 and the screw nut 1-6-2. As a prior art means widely used in linear motion systems of mechanical equipment, the ball screw pair 1-6 is not introduced in detail here. The lower end of the screw 1-6-1 is fixedly connected to the sliding plate 1-4, the outer wall of the screw nut 1-6-2 is rotatably connected to the upper fixed plate 1-1, and the screw nut 1-6-2 is transmission-connected to the drive assembly 1-5.

[0057] In this embodiment, the upper sealing tooling 4 is a bottomless cylindrical structure, and an upper cavity air inlet 4-1 is provided on the side wall of the upper sealing tooling 4; the lower sealing tooling 3 is a topless cylindrical structure, and a lower cavity air inlet 3-1 is provided on the side wall of the lower sealing tooling 3; both the lower cavity air inlet 3-1 and the upper cavity air inlet 4-1 are connected to the air change valve group 5 through air pipes. During operation, first, one end cavity of the test valve 9 is placed inside the lower sealing tooling 3, the driving component 1-5 drives the lead screw nut 1-6-2 to rotate, the lead screw nut 1-6-2 drives the lead screw 1-6-1 to move downward, and further pushes the sliding plate 1-4 to move downward along the first guide rod 1-3, so as to realize that the upper sealing tooling 4 clamps and seals the other end cavity of the test valve 9. Then, with the help of the air change valve group 5, the test valve 9 can be inflated through the lower cavity air inlet 3-1 and the upper cavity air inlet 4-1.

[0058] In this embodiment, the driving component 1-5 includes a motor 1-5-1, the motor 1-5-1 is fixedly connected to the upper fixing plate 1-1, the output shaft of the motor 1-5-1 is fixedly connected to the rotation axis of the first gear 1-5-2, the first gear 1-5-2 is meshed and connected with the second gear 1-5-3, the second gear 1-5-3 is fixedly connected to the outer wall of the lead screw nut 1-6-2, and the rotation axes of the second gear 1-5-3, the lead screw nut 1-6-2, and the lead screw 1-6-1 coincide with each other. When the motor 1-5-1 is started, the first gear 1-5-2 rotates, and then drives the second gear 1-5-3 and the lead screw nut 1-6-2 to rotate together, so as to drive the lead screw 1-6-1 to realize lifting movement.

[0059] As Figures 6 to 9 shown, the water tank lifting mechanism 8 includes a chain 8-2, one end of the chain 8-2 is fixedly connected to the fixed base 8-1 through a long bolt 8-9, and the fixed base 8-1 is fixedly arranged in the frame 2 through a bolt assembly. The other end of the chain 8-2 after passing through the sprocket 8-3 is fixedly connected to the water tank support plate 8-4 through a long bolt 8-9, and the sprocket 8-3 is located above the two fixed ends of the chain 8-2. The sprocket 8-3 is rotatably arranged on the lift plate 8-5 that can slide up and down, and the lift plate 8-5 is connected to the lift driving part 8-6.

[0060] The water tank 7 is fixedly connected to the water tank support plate 8-4, a vertical slideway 8-8 is arranged on the back plate of the water tank support plate 8-4, the vertical slideway 8-8 is slidably arranged on the vertical slide rail 8-7, and both ends of the vertical slide rail 8-7 are fixedly connected to the frame 2. The lift driving part 8-6 can push the lift plate 8-5 to move upward, and then drive the sprocket 8-3 to move upward. Since one end of the chain 8-2 is fixedly connected to the frame 2, the water tank support plate 8-4 fixedly connected to the other end of the chain 8-2 will move upward along the vertical slide rail 8-7, and then drive the water tank 7 to move upward.

[0061] In this embodiment, a through reserved hole is provided at the top of the long bolt 8-9. The end of the chain 8-2 is connected to the reserved hole of the long bolt 8-9 by means of a pin, a buckle, etc. The threaded rod body of the long bolt 8-9 is threadedly connected to the fixed base 8-1 and the water tank support plate 8-4. By screwing the long bolt 8-9, the tightness of the chain 8-2 can be adjusted.

[0062] In this embodiment, the lifting drive part 8-6 includes a lifting cylinder 8-6-1 and a vertically arranged second guide slide rod 8-6-2. The lifting cylinder 8-6-1 is fixedly arranged on the fixed base 8-1. The telescopic end of the lifting cylinder 8-6-1 is fixedly connected to the lower surface of the lifting plate 8-5. Guide slide holes 8-5-1 are provided on both sides of the lifting plate 8-5. The second guide slide rod 8-6-2 is slidably arranged in the guide slide holes 8-5-1. The two ends of the second guide slide rod 8-6-2 are fixedly connected to the frame 2. When the lifting cylinder 8-6-1 is started, the telescopic end of the lifting cylinder 8-6-1 pushes the lifting plate 8-5 to move upward along the second guide slide rod 8-6-2, thereby realizing the movement of lifting the water tank 7.

[0063] As Figures 10 to 12 shown, the air exchange valve group 5 includes an upper cavity test part 5-1, a test function switching part 5-2 and a lower cavity test part 5-3.

[0064] The upper cavity test section 5-1 further includes a first housing 5-1-1. A first cavity 5-1-2 is provided inside the first housing 5-1-1. A first upper air passage 5-1-3 communicating with the first cavity 5-1-2 is provided on the side wall of the first housing 5-1-1. A first moving seal rod 5-1-4 is slidably and sealingly connected inside the first housing 5-1-1, and the first moving seal rod 5-1-4 extends into the first cavity 5-1-2. A first plugging valve core 5-1-5 is fixedly provided at the end of the first moving seal rod 5-1-4 located inside the first cavity 5-1-2. The communication port between the first upper air passage 5-1-3 and the first cavity 5-1-2 is in sealing cooperation with the top surface of the first plugging valve core 5-1-5. The end of the first moving seal rod 5-1-4 located outside the first cavity 5-1-2 is fixedly connected to the telescopic end of a first cylinder 5-1-6, and the first cylinder 5-1-6 is fixedly connected to the first housing 5-1-1. A first lower air passage 5-1-7 is provided at the center of the bottom of the first cavity 5-1-2, and the first lower air passage 5-1-7 is in sealing cooperation with the bottom surface of the first plugging valve core 5-1-5. A first air inlet passage 5-1-8 is provided at the bottom edge of the first cavity 5-1-2, and the first air inlet passage 5-1-8 is always in communication with the first cavity 5-1-2. Rubber pads are provided on both the bottom surface and the top surface of the first plugging valve core 5-1-5 to ensure the sealing effect. When the first cylinder 5-1-6 drives the first moving seal rod 5-1-4 to move upward, the first plugging valve core 5-1-5 blocks the first upper air passage 5-1-3, separating the first upper air passage 5-1-3 from the first cavity 5-1-2. At this time, the first air inlet passage 5-1-8, the first cavity 5-1-2, and the first lower air passage 5-1-7 are in communication with each other. When the first cylinder 5-1-6 drives the first moving seal rod 5-1-4 to move downward, the first plugging valve core 5-1-5 blocks the first lower air passage 5-1-7. At this time, the first upper air passage 5-1-3, the first cavity 5-1-2, and the first air inlet passage 5-1-8 are in communication with each other.

[0065] As Figure 13 shown, the test function switching section 5-2 includes: a second housing 5-2-1, a second cavity 5-2-2, a second upper air passage 5-2-3, a second moving seal rod 5-2-4, a second plugging valve core 5-2-5, a second cylinder 5-2-6, a second lower air passage 5-2-7, and a second air inlet passage 5-2-8. The structure of the test function switching section 5-2 is the same as that of the upper cavity test section 5-1.

[0066] The lower cavity test section 5-3 includes: a third housing 5-3-1, a third cavity 5-3-2, a third upper air passage 5-3-3, a third moving seal rod 5-3-4, a third plugging valve core 5-3-5, a third cylinder 5-3-6, a third lower air passage 5-3-7, and a third air inlet passage 5-3-8. The structure of the lower cavity test section 5-3 is the same as that of the upper cavity test section 5-1.

[0067] The first air inlet 5-1-8 is connected to the upper cavity air inlet 4-1 through an air pipe, and the third air inlet 5-3-8 is connected to the lower cavity air inlet 3-1 through an air pipe.

[0068] The first upper air duct 5-1-3 and the third upper air duct 5-3-3 are respectively connected to the gas storage cylinder 6-1 through the gas pipeline assembly 6-2. By using the gas storage cylinder 6-1 and the gas pipeline assembly 6-2 to inflate the first upper air duct 5-1-3 and the third upper air duct 5-3-3, the inner cavity of the test valve 9 can be inflated.

[0069] The first lower air duct 5-1-7 and the third lower air duct 5-3-7 are respectively connected to the second air inlet 5-2-8 through air pipes, and the second lower air duct 5-2-7 is connected to an external water injection water cup through an air pipe. Observe whether there are bubbles in the external water injection water cup. When bubbles appear in the water cup, it indicates that gas flows out through the second lower air duct 5-2-7, and then determine whether the upper cavity or the lower cavity of the test valve 9 leaks.

[0070] The working process of the present invention is as follows:

[0071] First, place one end cavity of the test valve 9 in the lower sealing tooling 3, start the motor 1-5-1, the first gear 1-5-2 rotates, and then drives the second gear 1-5-3 and the lead screw nut 1-6-2 to rotate together, thereby driving the lead screw 1-6-1 to move downward, and then pushing the sliding plate 1-4 to move downward along the first guide rod 1-3, so as to realize that the upper sealing tooling 4 clamps the other end cavity of the test valve 9. At this time, the lower sealing tooling 3 and the upper sealing tooling 4 isolate the test valve 9 from the outside airtight.

[0072] The airtightness test process of the shell of the test valve 9 is as follows:

[0073] As Figure 12 and Figure 13 shown, start the first cylinder 5-1-6 to block the first lower air duct 5-1-7 with the first plugging valve core 5-1-5, start the third cylinder 5-3-6 to block the third lower air duct 5-3-7 with the third plugging valve core 5-3-5, and inflate the first upper air duct 5-1-3 and the third upper air duct 5-3-3 through the gas pipeline assembly 6-2. The gas enters the test valve 9 through the first upper air duct 5-1-3, the first cavity 5-1-2, the first air inlet 5-1-8, the air pipe, and the upper cavity air inlet 4-1. At the same time, the gas also enters the test valve 9 through the third upper air duct 5-3-3, the third cavity 5-3-2, the third air inlet 5-3-8, the air pipe, and the lower cavity air inlet 3-1.

[0074] Meanwhile, lift cylinder 8-6-1 is activated. The telescopic end of lift cylinder 8-6-1 pushes lift plate 8-5 to move upward along the second guide rod 8-6-2, thereby driving sprocket 8-3 to move upward. Since one end of chain 8-2 is fixedly connected to the frame 2, water tank support plate 8-4 fixedly connected to the other end of chain 8-2 will move upward along the vertical slide rail 8-7, thereby driving water tank 7 to move upward until the water in water tank 7 submerges test valve 9.

[0075] Observe whether there are bubbles emerging near test valve 9. If there are no bubbles, it indicates that the airtightness of the housing of test valve 9 is good. After observing for a period of time to ensure that there are no bubbles emerging, lower water tank 7.

[0076] The main seal test process of test valve 9 is as follows:

[0077] As Figure 14 shown, rotate the handle of test valve 9 to separate the upper cavity and the lower cavity inside test valve 9. First, ensure that the first plugging valve core 5-1-5 plugs the first lower air passage 5-1-7. Use the second cylinder 5-2-6 to plug the second plugging valve core 5-2-5 into the second lower air passage 5-2-7, and then use the third cylinder 5-3-6 to plug the third plugging valve core 5-3-5 into the third upper air passage 5-3-3. Meanwhile, continuously inflate into the first upper air passage 5-1-3, stop inflating the third upper air passage 5-3-3. The gas remaining in the lower cavity during the housing detection of test valve 9 is discharged to the outside through the lower cavity air inlet 3-1, trachea, third air inlet passage 5-3-8, third cavity 5-3-2, third lower air passage 5-3-7, second air inlet passage 5-2-8, and second cavity 5-2-2 from the second upper air passage 5-2-3 for exhaust.

[0078] As Figure 15 shown, after the exhaust is completed, use the second cylinder 5-2-6 to plug the second plugging valve core 5-2-5 into the second upper air passage 5-2-3 to connect the second air inlet passage 5-2-8, second cavity 5-2-2, and second lower air passage 5-2-7, and observe whether there are bubbles emerging in the water cup connected to the second lower air passage 5-2-7 through the trachea. At this time, since the first upper air passage 5-1-3 is continuously inflated, if the main seal of test valve 9 leaks air, the gas in the upper cavity of test valve 9 will leak into the lower cavity, and then flow into the water cup through the lower cavity air inlet 3-1, trachea, third air inlet passage 5-3-8, third cavity 5-3-2, third lower air passage 5-3-7, second air inlet passage 5-2-8, second cavity 5-2-2, and second lower air passage 5-2-7 to generate bubbles. If the main seal of test valve 9 does not leak air, there will be no bubbles emerging in the water cup.

[0079] Here, it should be explained that since the first plugging valve core 5-1-5 plugs the first lower air passage 5-1-7, gas will not flow into the first cavity 5-1-2 through the third lower air passage 5-3-7, the second air inlet passage 5-2-8, and the first lower air passage 5-1-7.

[0080] The above content is the process of inflating the upper cavity of the test valve 9. The process of inflating the lower cavity of the test valve 9 is the same as above and will not be described in detail here.

[0081] The embodiments described above are only descriptions of the preferred modes of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A high-pressure water tester, characterized in that: It comprises a frame (2), a suspended lower sealing tool (3) is fixedly arranged on the upper part of the frame (2), an upper sealing tool (4) which can slide up and down is arranged directly above the lower sealing tool (3), the upper sealing tool (4) is arranged on a tool moving mechanism (1), and the tool moving mechanism (1) is arranged on the frame (2); A water tank (7) that can slide up and down is arranged below the lower sealing tool (3); the water tank (7) is arranged on a water tank lifting mechanism (8); and the water tank lifting mechanism (8) is arranged at the bottom of the frame (2); The upper sealing tool (4) and the lower sealing tool (3) are respectively connected to the air exchange valve group (5) through air pipes, and the air exchange valve group (5) is connected to the air supply component (6).

2. The high-pressure water tester according to claim 1, characterized in that: The tool moving mechanism (1) comprises an upper fixed plate (1-1), a ball screw pair (1-6) and a sliding plate (1-4); The upper fixing plate (1-1) is fixedly arranged on the upper part of the frame (2), vertically arranged pillars (1-2) are arranged on both sides of the lower end surface of the upper fixing plate (1-1), the lower ends of the pillars (1-2) are fixedly connected to a suspension plate (1-7), and the lower sealing tool (3) is arranged in the middle of the upper end surface of the suspension plate (1-7); Two first guide slide rods (1-3) arranged vertically are provided between the upper fixed plate (1-1) and the suspension plate (1-7), the first guide slide rods (1-3) are arranged on both sides of the lower sealing tool (3), the sliding plate (1-4) is slidably connected to the first guide slide rods (1-3), and the upper sealing tool (4) is fixedly connected to the lower end surface of the sliding plate (1-4); The ball screw pair (1-6) comprises a screw (1-6-1) and a screw nut (1-6-2); the screw nut (1-6-2) is rotatably connected to the screw (1-6-1); the lower end of the screw (1-6-1) is fixedly connected to the sliding plate (1-4); the outer wall of the screw nut (1-6-2) is rotatably connected to the upper fixed plate (1-1); and the screw nut (1-6-2) is transmission-connected to the driving assembly (1-5).

3. The high-pressure water tester according to claim 2, characterized in that: The drive assembly (1-5) comprises a motor (1-5-1), the motor (1-5-1) is fixedly connected to the upper fixed plate (1-1), the output shaft of the motor (1-5-1) is fixedly connected to the rotation axis of the first gear (1-5-2), the first gear (1-5-2) is meshedly connected with the second gear (1-5-3), the second gear (1-5-3) is fixedly connected to the outer wall of the lead screw nut (1-6-2), and the rotation axis of the second gear (1-5-3) coincides with the rotation axis of the lead screw nut (1-6-2) and the lead screw (1-6-1).

4. The high-pressure water tester according to claim 1, characterized in that: The water tank lifting mechanism (8) includes a chain (8-2), one end of the chain (8-2) is fixedly connected to a fixed base (8-1), the fixed base (8-1) is fixedly arranged in the frame (2), the other end of the chain (8-2) after passing through a sprocket (8-3) is fixedly connected to a water tank support plate (8-4), and the sprocket (8-3) is located above both ends of the chain (8-2); The sprocket (8-3) is rotatably arranged on a lift plate (8-5) that can slide up and down, and the lift plate (8-5) is connected to a lift driving part (8-6); The water tank (7) is fixedly connected to the water tank support plate (8-4), a vertical slideway (8-8) is arranged on the back plate of the water tank support plate (8-4), the vertical slideway (8-8) is slidably arranged on a vertical slide rail (8-7), and both ends of the vertical slide rail (8-7) are fixedly connected to the frame (2).

5. The high-pressure water testing machine according to claim 4, characterized in that: One end of the chain (8-2) is fixedly connected to the fixed base (8-1) through a long bolt (8-9), and the other end of the chain (8-2) is fixedly connected to the water tank support plate (8-4) through the long bolt (8-9).

6. The high-pressure water tester according to claim 5, wherein: The lift driving part (8-6) includes a lift cylinder (8-6-1) and a vertically arranged second guide rod (8-6-2); The lift cylinder (8-6-1) is fixedly arranged on the fixed base (8-1), the telescopic end of the lift cylinder (8-6-1) is fixedly connected to the lower surface of the lift plate (8-5), guide holes (8-5-1) are arranged on both sides of the lift plate (8-5), the second guide rod (8-6-2) is slidably arranged in the guide holes (8-5-1), and both ends of the second guide rod (8-6-2) are fixedly connected to the frame (2).

7. The high-pressure water tester according to claim 1, wherein: The upper sealing tooling (4) is a bottomless cylindrical structure, and an upper chamber air inlet (4-1) is arranged on the side wall of the upper sealing tooling (4); The lower sealing tooling (3) is a topless cylindrical structure, and a lower chamber air inlet (3-1) is arranged on the side wall of the lower sealing tooling (3); The lower chamber air inlet (3-1) and the upper chamber air inlet (4-1) are both connected to the air change valve group (5) through air pipes.

8. The high-pressure water tester according to claim 7, wherein: The air change valve group (5) includes an upper chamber testing part (5-1), a testing function switching part (5-2) and a lower chamber testing part (5-3); The upper cavity test section (5-1) includes a first housing (5-1-1). A first cavity (5-1-2) is provided inside the first housing (5-1-1). A first upper air duct (5-1-3) communicating with the first cavity (5-1-2) is provided on the side wall of the first housing (5-1-1). A first moving seal rod (5-1-4) is provided inside the first housing (5-1-1) in a sliding and sealing connection manner, and the first moving seal rod (5-1-4) extends into the first cavity (5-1-2). A first plugging valve core (5-1-5) is provided at the end of the first moving seal rod (5-1-4) located inside the first cavity (5-1-2). The communication port between the first upper air duct (5-1-3) and the first cavity (5-1-2) is in plugging cooperation with the top surface of the first plugging valve core (5-1-5). The end of the first moving seal rod (5-1-4) located outside the first cavity (5-1-2) is fixedly connected to the telescopic end of a first cylinder (5-1-6), and the first cylinder (5-1-6) is fixedly connected to the first housing (5-1-1); A first lower air duct (5-1-7) is provided at the center of the bottom of the first cavity (5-1-2). The first lower air duct (5-1-7) is in plugging cooperation with the bottom surface of the first plugging valve core (5-1-5). A first air inlet duct (5-1-8) is provided at the bottom edge of the first cavity (5-1-2), and the first air inlet duct (5-1-8) is always in communication with the first cavity (5-1-2); The test function switching section (5-2) includes: a second housing (5-2-1), a second cavity (5-2-2), a second upper air duct (5-2-3), a second moving seal rod (5-2-4), a second plugging valve core (5-2-5), a second cylinder (5-2-6), a second lower air duct (5-2-7), and a second air inlet duct (5-2-8). The structure of the test function switching section (5-2) is the same as that of the upper cavity test section (5-1); The lower cavity test section (5-3) includes: a third housing (5-3-1), a third cavity (5-3-2), a third upper air duct (5-3-3), a third moving seal rod (5-3-4), a third plugging valve core (5-3-5), a third cylinder (5-3-6), a third lower air duct (5-3-7), and a third air inlet duct (5-3-8). The structure of the lower cavity test section (5-3) is the same as that of the upper cavity test section (5-1); The first upper air duct (5-1-3) and the third upper air duct (5-3-3) are respectively connected to the air supply assembly (6) through air pipes; The first lower air duct (5-1-7) and the third lower air duct (5-3-7) are respectively connected to the second air inlet duct (5-2-8) through air pipes, and the second lower air duct (5-2-7) is connected to an external water injection water cup through an air pipe; The first intake passage (5-1-8) is connected to the upper cavity intake port (4-1) through a trachea, and the third intake passage (5-3-8) is connected to the lower cavity intake port (3-1) through a trachea.

9. The high-pressure water tester according to claim 8, wherein: The air supply assembly (6) includes a gas storage cylinder (6-1) and a gas path pipeline assembly (6-2) provided with a valve. The first upper airway (5-1-3) and the third upper airway (5-3-3) are respectively connected to the gas storage cylinder (6-1) through the gas path pipeline assembly (6-2).

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