Air pressure and hydraulic pressure detection equipment for inflatable sealing type pipe fitting

Abstract

The utility model relates to the technical field of pipe and pipe fitting pressure detection, in particular to an inflatable sealed pipe and pipe fitting air pressure and hydraulic pressure detection device, which comprises a case, a water tank, a lifting mechanism, a linear driving assembly and a clamping mechanism, the clamping mechanism comprises a fluid exchange part and a clamping assembly, and a connector and an air escape valve are mounted on the fluid exchange part. A first runner and a second runner are arranged in the fluid exchange part, one end of the first runner communicates with the end face connected with the clamping assembly, and the other end of the first runner communicates with the connector; one end of the second runner communicates with the end face connected with the clamping assembly, and the other end of the second runner communicates with the air release valve; the connector is used for being connected with external pressurization equipment and applying air pressure or hydraulic pressure to a to-be-detected pipe or pipe fitting through the first flow channel, and the air escape valve is opened through the second flow channel when the pipe or pipe fitting applies the hydraulic pressure to exhaust air and closed when the air pressure is applied. According to the utility model, air pressure and hydraulic pressure detection of pipes or pipe fittings can be realized, and the experiment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pipe material pipe fitting pressure detection, more particularly to a kind of inflatable sealed pipe material pipe fitting air pressure hydraulic detection equipment. BACKGROUND

[0002] In the development process of pipe material pipe fitting product, physical performance occupies the core position, especially for pressure-bearing pipe material and pipe fitting, hydraulic performance is the key index to measure its quality and reliability.However, the current market hydraulic and air pressure detection equipment is designed independently, only single index can be tested, and hydraulic detection is mostly dependent on manual clamp, the installation process is complex and tedious, is easily influenced by the size difference of pipe material and pipe fitting, leading to test data distortion, low experimental efficiency, seriously hinder product verification process.Air pressure detection equipment is mainly automated, but also faces the problems of being easily influenced by pipe size and fixed air pressure limit, and is difficult to adapt to diversified product performance test demand.Therefore, in view of the limitations of prior art, it is particularly urgent to develop a new type of equipment integrating hydraulic and air pressure detection functions.The equipment needs to realize high stability and high efficiency detection to meet market demand, promote pipe material and pipe fitting industry to a more healthy and sustainable direction, and provide solid technical support for product development and quality improvement.

[0003] The prior art discloses a kind of air tightness detection device for PE pipe, including water tank, same support frame is fixedly installed in the top four corners of water tank, and same lifting frame is fixedly installed in the piston end of hydraulic cylinder, the bottom two ends of lifting frame are all provided with movable slot, movable sleeve plate is movably arranged on the inner wall of movable slot, stretching assembly is arranged between movable sleeve plate, and clamping assembly is arranged in the bottom of movable sleeve plate, which can realize air tightness detection of PE pipe of different lengths, and also enables the entire air tightness detection device to detect multiple PE pipes at a time, improve the detection efficiency of the entire device, however, this device and the detection equipment in the above can only test air tightness alone, and the installation process of pipe material is tedious, and experimental efficiency is low.

[0004] Therefore, there is still a need for a high-integration hydraulic and air pressure comprehensive detection equipment in the industry. UTILITY MODEL CONTENT

[0005] The utility model aims at overcoming the problem that the existing detection equipment can only detect air pressure or hydraulic index alone, and provides a kind of inflatable sealed pipe material pipe fitting air pressure hydraulic detection equipment, which can realize air pressure and hydraulic detection of pipe material or pipe fitting, and also has good sealing effect.

[0006] To solve the above technical problems, the utility model adopts the technical scheme that:

[0007] The utility model provides a kind of inflatable sealed pipe fitting pneumatic hydraulic detection equipment, including cabinet, water tank and lifting mechanism, the water tank is located in the cabinet inside and is fixedly connected with the cabinet, the lifting mechanism is fixedly connected with the water tank side wall, still include linear drive assembly, clamping mechanism, the linear drive assembly is fixedly connected with the lifting mechanism, the clamping mechanism includes fluid exchange piece and clamping assembly, one side of the fluid exchange piece is fixedly connected with the linear drive assembly, another side is fixedly connected with the clamping assembly, connector and air release valve are installed on the fluid exchange piece, first flow channel and second flow channel are provided in the fluid exchange piece, one end of the first flow channel is communicated to the end surface connected with the clamping assembly, another end is communicated to the connector;One end of the second flow channel is communicated to the end surface connected with the clamping assembly, another end is communicated to the air release valve;The connector is used to connect external pressurizing equipment and is inflated by the first flow channel or liquid pressure for the pipe or pipe fitting to be detected, the air release valve is opened by the second flow channel when the pipe or pipe fitting is inflated by liquid pressure and is used to discharge gas, and is closed when it is inflated by air pressure.

[0008] In the working process of the above technical solution, the pipe or pipe fitting to be detected is installed on the clamping assembly of the clamping mechanism, and then the linear drive assembly is adjusted to stably fix the pipe or pipe fitting. When the air pressure needs to be measured, appropriate amount of water is filled in the water tank, and then the lifting mechanism is adjusted to immerse the pipe in water. After that, the external pressurizing equipment is started, and the gas enters the first flow channel of the fluid exchange piece through the connector, and then enters the pipe or pipe fitting to be detected from the first flow channel. When the air pressure of the external pressurizing equipment reaches the required value, the air inflating is stopped. At this time, it is observed whether the pipe or pipe fitting to be detected leaks air bubbles in water. If air bubbles appear on the pipe of the pipe or pipe fitting to be detected, it means that the air pressure has exceeded the bearing range of the pipe or pipe fitting. When the liquid pressure needs to be measured, the lifting mechanism is controlled to lift the pipe or pipe fitting from water. After the water on the surface of the pipe or pipe fitting is wiped off, the air release valve is opened to release the high-pressure gas in the pipe or pipe fitting. At the same time, the air release valve remains open, and the connector is connected to the external liquid pressurizing equipment. After the external liquid pressurizing equipment is started, the liquid enters the first flow channel of the fluid exchange piece through the connector, and then enters the pipe or pipe fitting to be detected from the first flow channel. At this time, the air in the pipe or pipe fitting to be detected is discharged through the air release valve. When the air release valve starts to flow liquid, it proves that the air in the pipe or pipe fitting to be detected has been completely discharged. At this time, the air release valve is closed, and the power of the external liquid pressurizing equipment is increased to increase the liquid pressure to the required value. It is observed whether the pipe or pipe fitting leaks liquid. If the pipe or pipe fitting to be detected leaks liquid, it means that the liquid pressure has exceeded the bearing range of the pipe or pipe fitting. When the detection experiment is carried out, the air pressure and liquid pressure of the pipe or pipe fitting can be detected by using only one kind of equipment, which improves the test efficiency.

[0009] Further, the clamping assembly comprises an inner fixing ring, an outer fixing ring, an inner air cushion, an outer air cushion and an air nozzle, the inner fixing ring and the outer fixing ring are fixedly connected with the fluid exchange element, the inner air cushion is installed on the outer wall of the inner fixing ring, the outer air cushion is installed on the inner wall of the outer fixing ring, the air nozzle is installed on the fluid exchange element, the fluid exchange element is provided with a third flow channel, the outer fixing ring is provided with a fourth flow channel, and the inner fixing ring is provided with a fifth flow channel; one end of the fourth flow channel is communicated to the outer air cushion, and the other end is communicated to the third flow channel; one end of the fifth flow channel is communicated to the inner air cushion, and the other end is communicated to the third flow channel; one end of the third flow channel is communicated to the fourth flow channel and the fifth flow channel respectively, and the other end is communicated to the air nozzle; the pipe is clamped in this way of rubber air cushion, the rubber pad expands and tightly fits the product, the sealing effect can be achieved, and the flexible material of the rubber pad gives the chuck good adaptability, so that the chuck can be shared even if the product specifications are slightly different, and the work efficiency is significantly improved.

[0010] Further, the air nozzle has two, two air nozzles are arranged on opposite sides of the fluid exchange element respectively, the third flow channel is provided with two, respectively communicated with one of the fourth flow channel and the air nozzle and the fifth flow channel and the other air nozzle; the joint and the air release valve are arranged on the other two opposite sides of the vent clamping plate respectively; the two air nozzles arranged in position can better layout the distribution of the flow channel in the fluid exchange element and also facilitate the processing of the flow channel.

[0011] Further, the clamping mechanism further comprises an inner pressing member and an outer pressing member, the inner pressing member comprises a first inner pressing member and a second inner pressing member, the outer pressing member comprises a first outer pressing member and a second outer pressing member, the first inner pressing member and the second inner pressing member are located on both sides of the inner air cushion and are fixedly connected with the inner air cushion at one end and fixedly connected with the inner fixing ring at the other end, the first outer pressing member and the second outer pressing member are located on both sides of the outer air cushion and are fixedly connected with the outer air cushion at one end and fixedly connected with the outer fixing ring at the other end; as key clamping elements, the inner air cushion and the outer air cushion have high requirements for sealing, the inner air cushion and the outer air cushion are firmly clamped on the inner fixing ring and the outer fixing ring through the fastening effect of the pressing member, the sealing effect is improved, the fitting surface between the inner pressing member and the outer pressing member and the inner fixing ring and the outer fixing ring and the inner air cushion and the outer air cushion is designed as an inclined surface, and the inclined surface angles of the fitting inclined surfaces of the inner fixing ring and the inner pressing member and the outer fixing ring and the outer pressing member are different, the pressing member can provide greater sealing force after being fixed, and the inner air cushion and the outer air cushion can achieve good sealing effect when being inflated.

[0012] Further, a first sealing ring is arranged between the inner fixed ring and the fluid exchange element and between the outer fixed ring and the fluid exchange element for sealing; a second sealing ring is arranged at the connection between the fourth flow channel and the third flow channel and at the connection between the fifth flow channel and the third flow channel for sealing; the connection between flow channels may have poor sealing due to machining precision, and the sealing ring can further improve the sealing effect of the flow channel.

[0013] Further, the linear drive assembly comprises a cylinder and a push plate, the cylinder is fixedly connected with the lifting mechanism, one side of the push plate is fixedly connected with the piston of the cylinder, and the other side is fixedly connected with the fluid exchange element; the cylinder piston is used to fix the position of the pipe or pipe fitting to be tested, so as to avoid the displacement of the pipe or pipe fitting during pressure test.

[0014] Further, the lifting mechanism comprises a motor, a gear mounted on the output shaft of the motor, a track and a sliding plate; the motor is fixedly connected with the outer wall of the water tank, and the gear is located in the water tank; the track is perpendicular to the bottom surface of the water tank and is fixedly connected with the inner side wall of the water tank; the sliding plate is mounted in the track and is in sliding connection with the track; a rack portion is arranged on the sliding plate and is in engagement with the gear; the cylinder is fixedly connected with the sliding plate; the lifting mechanism of the gear motor is used to adjust the height of the pipe or pipe fitting to be tested, wherein the output shaft of the motor is inserted into the water tank from the outside of the water tank, the gear is mounted on the output shaft in the water tank and is in engagement with the rack to drive the pipe or pipe fitting to rise and fall, so as to meet the different height requirements of the pipe or pipe fitting during hydraulic or pneumatic test.

[0015] Further, the track is provided with a T-shaped groove in a direction perpendicular to the bottom surface of the water tank, the sliding plate is provided with a protruding portion matched with the T-shaped groove, the rack portion is arranged on the protruding portion and located on one side of the top surface of the protruding portion, and the gear extends into the T-shaped groove and is located on the other side close to the top surface of the protruding portion; the T-shaped groove and the protruding portion can avoid the sliding plate from being separated from the track due to vibration of the motor and excessive meshing force between the teeth during lifting, the rack portion is fixed on the top surface close to one end side of the protruding portion and is in engagement with the gear, and the structure is more compact.

[0016] Further, a limiting block is arranged at the bottom end of the track, the limiting block is fixedly connected with the track through threads, and the limiting block is used to limit the maximum sliding stroke of the sliding plate; the limiting block arranged at the bottom end of the track can avoid the sliding plate from colliding with the bottom surface of the water tank and damaging the water tank.

[0017] Further, a control panel is further included, which is arranged at the top end of the outer side wall of the cabinet, and the linear drive assembly and the lifting mechanism are electrically connected with the control panel; the air release valve is electrically connected with the control panel; and the control panel is further electrically connected with an external pressurizing device for realizing pressurizing control on the pipe or pipe fitting to be detected.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] 1. The water tank, the lifting mechanism, the linear drive assembly and the clamping mechanism are arranged, the lifting mechanism is arranged on the side wall of the water tank, the height of the linear drive assembly and the clamping mechanism is lifted through the lifting mechanism, the pipe or pipe fitting is horizontally fixed by the linear drive assembly, and the pipe or pipe fitting is clamped by the clamping mechanism, so that the air pressure and hydraulic pressure of the pipe or pipe fitting can be detected, and the experimental efficiency is improved.

[0020] 2. The clamping mechanism adopts a fluid exchange piece to lay a fluid flow channel, and the inner air cushion and the outer air cushion are inflated and pressurized to clamp, the rubber air cushion can be expanded and closely attached to the product, and good sealing effect is realized. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view of an inflatable sealing type pipe and pipe fitting air pressure and hydraulic pressure detection equipment.

[0022] Figure 2 It is an exploded view of an inflatable sealing type pipe and pipe fitting air pressure and hydraulic pressure detection equipment.

[0023] Figure 3 It is a combined exploded view of the linear drive assembly and the clamping mechanism.

[0024] Figure 4 It is a schematic view of the internal structure of the fluid exchange piece.

[0025] Figure 5 It is a combined schematic view of the linear drive assembly and the clamping mechanism.

[0026] Figure 6 It is a combined sectional view of the linear drive assembly and the clamping mechanism.

[0027] Figure 7 It is an exploded view of the lifting mechanism.

[0028] In the drawings: 1, case; 2, water tank; 3, lifting mechanism; 4, linear drive assembly; 5, clamping mechanism; 501, fluid exchange piece; 502, clamping assembly; 503, joint; 504, air release valve; 5011, first flow channel; 5012, second flow channel; 5021, inner fixing ring; 5022, outer fixing ring; 5023, inner air cushion; 5024, outer air cushion; 5025, air nozzle; 5013, third flow channel; 5014, fourth flow channel; 5015, fifth flow channel; 505, inner pressure tight piece; 506, outer pressure tight piece; 5051, first inner pressure tight piece; 5052, second inner pressure tight piece; 5061, first outer pressure tight piece; 5062, second outer pressure tight piece; 6, first sealing ring; 7, second sealing ring; 401, air cylinder; 402, push plate; 301, motor; 302, gear; 303, track piece; 304, sliding plate; 3031, T-shaped groove; 3041, rack part; 3042, protruding part; 3032, limiting block; 8, control panel. DETAILED DESCRIPTION

[0029] The utility model will be further explained in connection with specific implementation. Among them, the drawings are only for example explanation, and the representation is only schematic diagram, and cannot be understood as the restriction of the patent; in order to better explain the embodiment of the utility model, the drawing some components will be omitted, enlarged or reduced, and does not represent the size of actual product; for those skilled in the art, some well-known structure and its description in the drawing can be omitted and understood.

[0030] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar components; in the description of the utility model, it is understood that if the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" etc. is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore the position relationship description term in the drawing is only for example explanation, and cannot be understood as the restriction of the patent, for the ordinary skilled in the art, can understand the specific meaning of the above terms according to the specific situation.

[0031] Embodiment 1

[0032] The embodiment is a first embodiment of inflatable sealing type pipe and pipe fitting pneumatic and hydraulic detection equipment, as shown in Figures 1 to 6As shown, it comprises a cabinet 1, a water tank 2 and a lifting mechanism 3, the water tank 2 is located inside the cabinet 1 and is fixedly connected with the cabinet 1, the lifting mechanism 3 is fixedly connected with the side wall of the water tank 2, further comprising a linear drive assembly 4 and a clamping mechanism 5, the linear drive assembly 4 is fixedly connected with the lifting mechanism 3, the clamping mechanism 5 comprises a fluid exchange piece 501 and a clamping assembly 502, one side of the fluid exchange piece 501 is fixedly connected with the linear drive assembly 4, and the other side is fixedly connected with the clamping assembly 502, a connector 503 and a deflation valve 504 are installed on the fluid exchange piece 501, a first flow channel 5011 and a second flow channel 5012 are arranged in the fluid exchange piece 501, one end of the first flow channel 5011 is communicated to the end face connected with the clamping assembly 502, and the other end is communicated to the connector 503; one end of the second flow channel 5012 is communicated to the end face connected with the clamping assembly 502, and the other end is communicated to the deflation valve 504; the connector 503 is used for connecting an external pressurizing device and adding gas pressure or hydraulic pressure to the pipe or pipe fitting to be detected through the first flow channel 5011, and the deflation valve 504 is opened to discharge gas when the pipe or pipe fitting is added with hydraulic pressure through the second flow channel 5012, and is closed when the pipe or pipe fitting is added with gas pressure.

[0033] Specifically, the clamping assembly 502 comprises an inner fixed ring 5021, an outer fixed ring 5022, an inner air cushion 5023, an outer air cushion 5024 and an air nozzle 5025, the inner fixed ring 5021 and the outer fixed ring 5022 are fixedly connected with the fluid exchange piece 501, the inner air cushion 5023 is installed on the outer wall of the inner fixed ring 5021, the outer air cushion 5024 is installed on the inner wall of the outer fixed ring 5022, the air nozzle 5025 is installed on the fluid exchange piece 501, a third flow channel 5013 is arranged in the fluid exchange piece 501, the outer fixed ring 5022 is provided with a fourth flow channel 5014, and the inner fixed ring 5021 is provided with a fifth flow channel 5015; one end of the fourth flow channel 5014 is communicated to the outer air cushion 5024, and the other end is communicated to the third flow channel 5013; one end of the fifth flow channel 5015 is communicated to the inner air cushion 5023, and the other end is communicated to the third flow channel 5013; one end of the third flow channel 5013 is communicated to the fourth flow channel 5014 and the fifth flow channel 5015 respectively, and the other end is communicated to the air nozzle 5025; the pipe fitting is clamped in this way of rubber air cushion, the rubber pad is inflated and closely attached to the product, the sealing effect can be achieved, and the flexible material of the rubber pad gives the chuck good adaptability, even if the product specifications are slightly different, the chuck can be shared, and the work efficiency is significantly improved.

[0034] Specifically, the air nozzle 5025 has two, two air nozzles 5025 are arranged on the opposite sides of the fluid exchange piece 501, the third flow channel 5013 is provided with two, which are communicated with one of the air nozzles 5025 and the fourth flow channel 5014 and the other air nozzle 5025 and the fifth flow channel 5015; the joint 503 and the air release valve 504 are arranged on the other two opposite sides of the air clamp plate; the two air nozzles 5025 arranged in position can better layout the distribution of the flow channel in the fluid exchange piece 501 and also facilitate the processing of the flow channel.

[0035] Specifically, the clamping mechanism further comprises an inner pressing member 505 and an outer pressing member 506, the inner pressing member 505 comprises a first inner pressing member 5051 and a second inner pressing member 5052, the outer pressing member 506 comprises a first outer pressing member 5061 and a second outer pressing member 5062, the first inner pressing member 5051 and the second inner pressing member 5052 are located on both sides of the inner air cushion 5023 and are fixedly connected with the inner air cushion 5023 at one end and fixedly connected with the inner fixed ring at the other end, the first outer pressing member 5061 and the second outer pressing member 5062 are located on both sides of the outer air cushion 5024 and are fixedly connected with the outer air cushion 5024 at one end and fixedly connected with the outer fixed ring at the other end; the inner air cushion 5023 and the outer air cushion 5024 as key clamping elements have high requirements for sealing, the inner air cushion 5023 and the outer air cushion 5024 are firmly clamped on the inner fixed ring and the outer fixed ring through the fastening effect of the pressing member, the sealing effect is improved, the fitting surfaces between the inner pressing member 505, the outer pressing member 506 and the inner fixed ring, the outer fixed ring and the inner air cushion 5023, the outer air cushion 5024 are designed as inclined surfaces, and the inclined surface angles of the fitting inclined surfaces of the inner fixed ring and the inner pressing member 505 and the outer fixed ring and the outer pressing member 506 are different, the pressing member can provide greater sealing force after being fixed, and the inner air cushion 5023 and the outer air cushion 5024 can achieve good sealing effect when being inflated.

[0036] Specifically, the first sealing ring 6 is arranged between the inner fixed ring 5021 and the fluid exchange piece 501 and between the outer fixed ring 5022 and the fluid exchange piece 501 for sealing; the second sealing ring 7 is arranged at the connection between the fourth flow channel 5014 and the third flow channel 5013 and at the connection between the fifth flow channel 5015 and the third flow channel 5013 for sealing; the connection between the flow channels will appear poor sealing due to the machining precision problem, and the sealing member can further improve the sealing effect of the flow channel.

[0037] Specifically, the linear drive assembly 4 comprises a cylinder 401 and a push plate 402, the cylinder 401 is fixedly connected with the lifting mechanism 3, one side of the push plate 402 is fixedly connected with the piston of the cylinder 401, and the other side is fixedly connected with the fluid exchange piece 501; the position of the pipe or pipe fitting to be tested is fixed by adopting the form of the piston of the cylinder 401, so as to avoid the position deviation of the pipe or pipe fitting during the pressure test.

[0038] The three sets of lifting mechanism 3, linear drive assembly 4 and clamping mechanism 5 are arranged on the opposite sides of the water tank 2, and one set is arranged on one side adjacent to the other two sets. When measuring pipe fittings, the pipe fittings have three open ends and two vertical open ends, and at this time, three sets or two sets of clamping mechanisms 5 on the adjacent sides of the water tank 2 are used. When measuring pipe materials, the pipe materials generally have only two openings and are straight-through pipes, and at this time, the two sets of clamping mechanisms on the opposite sides of the water tank 2 can be used.

[0039] In the working process of the above embodiment, the end of the pipe material or pipe fitting to be measured is installed between the inner air cushion 5023 and the outer air cushion 5024 of the clamping assembly 502, and then the external pressurizing device connected to the air nozzle 5025 is started to pressurize, so that the inner air cushion 5023 and the outer air cushion 5024 are inflated to clamp and fix the pipe material or pipe fitting to be measured. Then the linear drive assembly 4 is adjusted to stably fix the pipe material or pipe fitting. When the gas pressure needs to be measured, an appropriate amount of water is filled in the water tank 2, and then the lifting mechanism 3 is adjusted to immerse the pipe material in water. After that, the external pressurizing device is started, the gas enters the first flow channel 5011 of the fluid exchange piece 501 through the joint 503, and then enters the pipe material or pipe fitting to be measured. When the external pressurizing device stops inflating to the value to be measured, whether the pipe material or pipe fitting to be measured leaks bubbles in water is observed. When the hydraulic pressure needs to be measured, the pipe material or pipe fitting is lifted out of the water by controlling the lifting mechanism 3, and then the water on the surface of the pipe material or pipe fitting is wiped off. After that, the air release valve 504 is opened to release the high-pressure gas in the pipe material or pipe fitting, and at the same time, the air release valve 504 is kept open. The joint 503 is switched to connect the external liquid pressure adding device, and the external liquid pressure adding device is started. The liquid also enters the first flow channel 5011 of the fluid exchange piece 501 through the joint 503, and then enters the pipe material or pipe fitting to be measured. At this time, the air in the pipe material or pipe fitting to be measured is discharged through the air release valve 504. When the air release valve 504 starts to flow liquid, it is proved that the air in the pipe material or pipe fitting to be measured has been completely discharged. At this time, the air release valve 504 is closed, and the power of the external liquid pressure adding device is increased to increase the hydraulic pressure to the value to be measured. Whether the pipe body of the pipe material or pipe fitting leaks liquid is observed.

[0040] The beneficial effects of the embodiment are as follows: the arrangement of the three sets of water tank 2, lifting mechanism 3, linear drive assembly 4 and clamping mechanism 5 can realize the detection of the gas pressure and hydraulic pressure of the pipe material or pipe fitting, and improve the experimental efficiency. Whether the pipe material or pipe fitting to be measured leaks bubbles in water or appears liquid leakage phenomenon is observed to judge whether the pressure bearing limit is exceeded. The judgment method is simple and intuitive. The inner air cushion 5023 and the outer air cushion 5024 are inflated and pressurized to clamp, the rubber air cushion can be inflated and closely attached to the product to achieve good sealing effect.

[0041] Embodiment 2

[0042] The second embodiment of the air-sealed pipe and pipe fitting pneumatic and hydraulic detection equipment is shown in Figures 4 to 7 The difference between the second embodiment and the first embodiment is that

[0043] Specifically, the lifting mechanism 3 includes a motor 301, a gear 302 mounted on the output shaft of the motor 301, a track member 303, and a sliding plate 304. The motor 301 is fixedly connected to the outer wall of the water tank 2, and the gear 302 is located inside the water tank 2. The track member 303 is perpendicular to the bottom surface of the water tank 2 and is fixedly connected to the inner side wall of the water tank 2. The sliding plate 304 is mounted in the track member 303 and is slidingly connected to the track member 303. The sliding plate 304 is provided with a rack portion 3041, which is engaged with the gear 302. The cylinder 401 is fixedly connected to the sliding plate 304. The lifting mechanism 3 with the motor 301 and the gear 302 adjusts the height of the pipe or pipe fitting to be tested. The output shaft of the motor 301 is inserted into the water tank 2 from the outside of the water tank 2. The gear 302 is mounted on the output shaft inside the water tank 2 and is engaged with the rack to drive the pipe or pipe fitting to rise and fall, meeting the different height requirements of the pipe or pipe fitting during hydraulic and pneumatic testing.

[0044] Specifically, the track member 303 is provided with a T-shaped groove 3031 in a direction perpendicular to the bottom surface of the water tank 2. The sliding plate 304 is provided with a protruding portion 3042 matching the T-shaped groove 3031. The rack portion 3041 is fixedly connected to the top surface of the protruding portion 3042 near one end side of the protruding portion 3042. The gear 302 is located near the other end side of the protruding portion 3042 and is engaged with the rack portion 3041. The track member 303 and the sliding plate 304 are slidingly connected through the stepped groove and the protruding portion 3042. The arrangement of the T-shaped groove 3031 and the protruding portion 3042 can prevent the sliding plate 304 from being separated from the track member 303 due to vibration of the motor 301 and excessive meshing force between the teeth during lifting. The rack portion 3041 is fixedly connected to the top surface of the protruding portion 3042 near one end side and is engaged with the gear 302, making the structure more compact.

[0045] Specifically, the track member 303 is provided with a T-shaped groove 3031 in a direction perpendicular to the bottom surface of the water tank 2. The sliding plate 304 is provided with a protruding portion 3042 matching the T-shaped groove 3031. The rack portion 3041 is fixedly connected to the top surface of the protruding portion 3042 near one end side of the protruding portion 3042. The gear 302 is located near the other end side of the protruding portion 3042 and is engaged with the rack portion 3041. The track member 303 and the sliding plate 304 are slidingly connected through the stepped groove and the protruding portion 3042. The arrangement of the T-shaped groove 3031 and the protruding portion 3042 can prevent the sliding plate 304 from being separated from the track member 303 due to vibration of the motor 301 and excessive meshing force between the teeth during lifting. The rack portion 3041 is fixedly connected to the top surface of the protruding portion 3042 near one end side and is engaged with the gear 302, making the structure more compact.

[0046] During the operation of the above-mentioned embodiments, the cylinder 401 is pressurized by an external pressurizing device to push the piston. Two or three groups of cylinders simultaneously push the pipe or pipe fitting, and then drive the lifting mechanism 3 to adjust the height by engaging the gear 302 with the rack portion 3041 to drive the sliding plate 304 to slide in the track member 303. Finally, whether the working cylinders are at the same height is determined by observing whether the heights of the teeth of each rack extending out of the top of the water tank 2 are the same.

[0047] The beneficial effects of the embodiment are that the meshing transmission mode of the gear 302 and the rack part 3041 determines whether the working cylinders 401 are at the same height by observing whether the heights of the racks extending out of the top of the water tank 2 are the same, and the adjustment mode is intuitive and simple; the sliding mode of the T-shaped groove 3031 ensures that the sliding plate 304 can only move in the height direction, and it is difficult to deviate in other directions, and it is more stable and reliable.

[0048] Embodiment 3

[0049] The embodiment is a third embodiment of an inflatable sealed pipe and pipe fitting pneumatic and hydraulic detection equipment, as shown in Figures 1 to 2 The difference from the first embodiment is that:

[0050] Specifically, the control panel 8 is arranged at the top end of the outer side wall of the cabinet 1, and the linear drive assembly 4 and the lifting mechanism 3 are electrically connected with the control panel 8; the air release valve 504 is electrically connected with the control panel 8; the control panel 8 is also electrically connected with an external pressurizing device for realizing pressurizing control of the pipe fitting or pipe to be detected; the electrical connection of the control panel 8 can make the detection action process relatively more semi-automatic, and improve the work efficiency.

[0051] In the working process of the above embodiment, the external pressurizing device is started by operating the control panel 8 to pressurize the inner air cushion 5023 and the outer air cushion 5024 of the clamping assembly 502, and then the control panel 8 is operated to control the lifting mechanism 3 to rise and fall, and the linear drive assembly 4 is controlled to fix the pipe or pipe fitting in the horizontal direction.

[0052] The beneficial effects of the embodiment are that the electrical connection of the control panel 8 improves the automation degree of operation, reduces some complex manual operation procedures, and improves the work efficiency.

[0053] In the specific content of the above specific embodiments, any non-contradictory combination of technical features can be combined, and in order to make the description simple, all possible combinations of the above technical features are not described, but as long as the combination of the technical features does not exist, it should be considered as the scope of the description.

[0054] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not limitations on the embodiments of the utility model. For ordinary skilled persons in the art, other different forms of changes or changes can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.

Claims

1. An inflatable, sealed, pneumatic-hydraulic testing device for pipes and fittings, comprising a housing (1), a water tank (2), and a lifting mechanism (3), wherein the water tank (2) is located inside the housing (1) and fixedly connected to the housing (1), and the lifting mechanism (3) is fixedly connected to the side wall of the water tank (2), characterized in that, Also include straight drive assembly (4), clamping mechanism (5), the straight drive assembly (4) is fixedly connected with the lifting mechanism (3), the clamping mechanism (5) includes fluid exchange (501) and clamping assembly (502), one side of the fluid exchange (501) is fixedly connected with the straight drive assembly (4), the other side is fixedly connected with the clamping assembly (502), the fluid exchange (501) is provided with connector (503) and air release valve (504), the fluid exchange (501) is provided with first flow channel (5011) and second flow channel (5012), one end of the first flow channel (5011) is communicated to the end surface connected with the clamping assembly (502), the other end is communicated to the connector (503);One end of the second flow channel (5012) is communicated to the end surface connected with the clamping assembly (502), the other end is communicated to the air release valve (504);The connector (503) is used for connecting external pressurizing equipment and is pressurized or hydraulic for the pipe or pipe fittings to be detected through the first flow channel (5011), the air release valve (504) is opened through the second flow channel (5012) when the pipe or pipe fittings is pressurized to discharge gas.

2. An air-seal type pipe fitting pneumatic-hydraulic testing apparatus according to claim 1, wherein The clamping assembly (502) includes inner fixed ring (5021), outer fixed ring (5022), inner air cushion (5023), outer air cushion (5024) and air nozzle (5025), the inner fixed ring (5021) and the outer fixed ring (5022) are fixedly connected with the fluid exchange (501), the inner air cushion (5023) is installed on the outer wall of the inner fixed ring (5021), the outer air cushion (5024) is installed on the inner wall of the outer fixed ring (5022), the air nozzle (5025) is installed on the fluid exchange (501), the fluid exchange (501) is provided with third flow channel (5013), the outer fixed ring (5022) is provided with fourth flow channel (5014), the inner fixed ring (5021) is provided with fifth flow channel (5015);One end of the fourth flow channel (5014) is communicated to the outer air cushion (5024), the other end is communicated to the third flow channel (5013);One end of the fifth flow channel (5015) is communicated to the inner air cushion (5023), the other end is communicated to the third flow channel (5013);One end of the third flow channel (5013) is communicated with the fourth flow channel (5014) and the fifth flow channel (5015) respectively, the other end is communicated to the air nozzle (5025).

3. An air-seal type pipe fitting pneumatic-hydraulic testing apparatus according to claim 2, wherein The air nozzle (5025) has two, two of the air nozzle (5025) is arranged on the opposite two sides of the fluid exchange piece (501), the third flow channel (5013) is provided with two, respectively, the fourth flow channel (5014) and one of the air nozzle (5025) and the fifth flow channel (5015) and the other air nozzle (5025) are communicated; the joint (503) and the air release valve (504) are arranged on the other two opposite sides of the fluid exchange piece (501).

4. The pneumatic pressure hydraulic testing apparatus for a pipe and a pipe fitting according to claim 2, wherein The clamping mechanism (5) further comprises an inner pressing member (505) and an outer pressing member (506), the inner pressing member (505) comprises a first inner pressing member (5051) and a second inner pressing member (5052), the outer pressing member (506) comprises a first outer pressing member (5061) and a second outer pressing member (5062), the first inner pressing member (5051) and the second inner pressing member (5052) are located on both sides of the inner air cushion (5023) and are fixedly connected with the inner air cushion (5023) at one end and are fixedly connected with the inner fixed ring (5021) at the other end, the first outer pressing member (5061) and the second outer pressing member (5062) are located on both sides of the outer air cushion (5024) and are fixedly connected with the outer air cushion (5024) at one end and are fixedly connected with the outer fixed ring (5022) at the other end.

5. An air-seal type pipe fitting pneumatic-hydraulic testing apparatus according to claim 3, wherein The first sealing ring (6) is arranged between the inner fixed ring (5021) and the fluid exchange piece (501) and between the outer fixed ring (5022) and the fluid exchange piece (501) for sealing; the second sealing ring (7) is arranged at the connection between the fourth flow channel (5014) and the third flow channel (5013) and at the connection between the fifth flow channel (5015) and the third flow channel (5013) for sealing.

6. An air-seal tube fitting pneumatic-hydraulic testing apparatus according to claim 1, wherein, The linear drive assembly (4) comprises a cylinder (401) and a push plate (402), the cylinder (401) is fixedly connected with the lifting mechanism (3), one side of the push plate (402) is fixedly connected with the piston of the cylinder (401), and the other side is fixedly connected with the fluid exchange piece (501).

7. An air-seal tube fitting pneumatic-hydraulic testing apparatus according to claim 6, wherein, The lifting mechanism (3) comprises a motor (301), a gear (302) mounted on the output shaft of the motor (301), a track piece (303), and a sliding plate (304); the motor (301) is fixedly connected with the outer wall of the water tank (2), and the gear (302) is located in the water tank (2); the track piece (303) is perpendicular to the bottom surface of the water tank (2) and is fixedly connected with the inner side wall of the water tank (2), the sliding plate (304) is mounted in the track piece (303) and is slidingly connected with the track piece (303), the sliding plate (304) is provided with a rack portion (3041), the rack portion (3041) is engaged with the gear (302), and the cylinder (401) is fixedly connected with the sliding plate (304).

8. An air-seal tube fitting pneumatic-hydraulic testing apparatus according to claim 7, wherein, The track piece (303) is provided with a T-shaped groove (3031) in the direction perpendicular to the bottom surface of the water tank (2), the sliding plate (304) is provided with a protruding part (3042) matched with the T-shaped groove (3031), the rack part (3041) is arranged on the protruding part (3042) and located at one side of the top surface of the protruding part (3042), and the gear (302) extends into the T-shaped groove (3031) and is located at the other side close to the top surface of the protruding part (3042).

9. An air-seal tube fitting pneumatic-hydraulic testing apparatus according to claim 7, wherein, The bottom end of the track piece (303) is provided with a limiting block (3032) fixed with the track piece (303) through screw connection, and the limiting block (3032) is used for limiting the maximum sliding stroke of the sliding plate (304).

10. The apparatus according to any one of claims 1-9, wherein, Further comprising a control panel (8) arranged at the top end of the outer wall of the cabinet (1), the linear drive assembly (4) and the lifting mechanism (3) are electrically connected with the control panel (8); the air release valve (504) is electrically connected with the control panel (8); and the control panel (8) is further electrically connected with an external pressurizing device for realizing pressurizing control on the pipe or pipe material to be tested.

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