CN116296112A - Pressure vessel detection device - Google Patents

Pressure vessel detection device Download PDF

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Publication number
CN116296112A
CN116296112A CN202310586740.7A CN202310586740A CN116296112A CN 116296112 A CN116296112 A CN 116296112A CN 202310586740 A CN202310586740 A CN 202310586740A CN 116296112 A CN116296112 A CN 116296112A
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China
Prior art keywords
axis
working platform
pressure vessel
connecting plate
water pipe
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Granted
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CN202310586740.7A
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Chinese (zh)
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CN116296112B (en
Inventor
仝其云
曹志峰
李岚
张剑敏
刘小蓓
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Yantai Youli Technology Co ltd
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Dongying Special Equipment Inspection And Research Institute
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Priority to CN202310586740.7A priority Critical patent/CN116296112B/en
Publication of CN116296112A publication Critical patent/CN116296112A/en
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Publication of CN116296112B publication Critical patent/CN116296112B/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/12Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water
    • G01M3/14Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G01M3/146Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

The invention belongs to the technical field of pressure vessel detection, and relates to a pressure vessel detection device. The device comprises a working platform for placing a pressure container and a bubble water supply tank, wherein a positioning mechanism and a detection mechanism are arranged on the working platform. The water pipe rotates to enable the water distribution assembly to spray bubble water to one circle of the pressure container, so that a layer of bubble water is uniformly smeared on the outer surface of the pressure container. When the pressure vessel leaks, the bubble water assumes a bubble state due to the leaked gas. And meanwhile, the camera shoots the outer surface of the pressure container, uploads the acquired image to the computer, identifies the position of leakage through the identification of the computer, and marks the point of leakage. Therefore, when the pressure container is leaked and detected, workers are prevented from climbing up and down to spray bubble water to the pressure container due to the height of the pressure container, safety of the workers is guaranteed, and working efficiency is improved. And the fine leakage port can be accurately detected.

Description

Pressure vessel detection device
Technical Field
The invention belongs to the technical field of pressure vessel detection, and relates to a pressure vessel detection device.
Background
The pressure vessel is a closed device for containing gas or liquid and bearing a certain pressure. Because the pressure vessel bears certain pressure in the use, the pressure vessel easily appears revealing and influences safe production. It is therefore necessary to detect the pressure vessel over a period of time and determine the leak point location in preparation for subsequent processing.
A pressure vessel leak detection device for safety monitoring is disclosed in the publication CN 214309316U. The apparatus detects by installing a gas leak detection strip around the pressure vessel, the gas leak detection strip being subject to drift when the pressure vessel experiences a leak.
But the material plastics that gas leakage detection area used is the material, and when gas leakage detection area was longer, gas leakage detection area can't guarantee the complete vertical state, and then hardly guarantees the distance of gas leakage detection area and pressure vessel. When the leakage of the pressure container is very small or the leakage port is in an inclined state, the leakage detection belt is not easy to detect, and meanwhile, when a worker needs to observe the leakage position of the pressure container, the gas in the air flows due to the walking of the person, the leakage detection belt can possibly drift, and the leakage detection result is affected. The leakage point can also be detected by smearing bubble water on the outer surface of the pressure container, but some pressure containers are relatively large in height, workers need to climb up and down to smear bubble water, and leakage points at high positions are inconvenient to observe.
In order to solve the above problems, the present invention provides a pressure vessel detection device.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a pressure container detection device.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the pressure vessel detection device comprises a working platform for placing a pressure vessel and a bubble water supply box, wherein a positioning mechanism and a detection mechanism are arranged on the working platform;
a plurality of support square tubes are fixedly arranged on the working platform, the support square tubes are circumferentially distributed along the axis of the working platform, and each support square tube is provided with a positioning mechanism; the positioning mechanism enables the axis of the pressure vessel to coincide with the axis of the working platform;
the detection mechanism comprises a water pipe, a water diversion assembly and a camera; the water pipe is rotatably arranged on the working platform, and rotates around the axis of the working platform, and the axis of the water pipe is parallel to the axis of the working platform; the water diversion assemblies are arranged in the axial direction of the water pipe; the water pipe is communicated with the bubble water supply tank; the cameras are multiple and fixedly arranged on the water pipe along the axial direction of the water pipe; when the water pipe rotates around the axis of the working platform, the water diversion assembly sprays bubble water on the outer surface of the pressure container in a circle, and the camera shoots the outer surface of the pressure container.
Further, the water diversion assembly comprises a second branch pipe, a first branch pipe and an atomization nozzle; the second branch pipe is communicated with the water pipe through a third branch pipe; the axis of the second branch pipe is parallel to the axis of the water pipe; the third branch pipe is provided with a ball valve, and the second branch pipe is communicated with the water pipe through the ball valve; the first branch pipes are in a plurality, the first branch pipes are distributed along the axial direction of the second branch pipes, and one end of each first branch pipe is communicated with the second branch pipe; one end of each first branch pipe far away from the second branch pipe is provided with an atomizing nozzle, and the atomizing nozzle is communicated with the first branch pipe; the water outlet of the atomizing nozzle faces the pressure container.
Further, the positioning mechanism comprises a first connecting plate; the first connecting plate rotates and sets up in the one side of support side pipe, has seted up the guide way along length direction on the first connecting plate, and sliding connection has the second guide bar in the guide way, and fixed mounting has pressure sensor on the diapire of guide way, and the rigid coupling has the spring between second guide bar and the pressure sensor, and work platform's axis is in the rotation plane of second guide bar.
Further, one end, far away from the spring, of the second guide rod is fixedly connected with a mounting seat, a connecting block is rotatably mounted on the mounting seat through a rotating shaft, a torsion spring is sleeved on the rotating shaft, one end of the torsion spring is fixedly connected with the mounting seat, and the other end of the torsion spring is fixedly connected with the connecting block; one end of the connecting block, which is far away from the rotating shaft, is fixedly provided with a first pressing plate.
Further, the first connection plate includes a first connection section and a second connection section; the first connecting section is fixedly connected with the second connecting section, and the joint of the first connecting section and the second connecting section is rotationally connected with the support square tube through a hinge shaft; the guide groove is positioned on the first connecting section; the second connecting section is provided with a first chute along the length direction; a third guide rod is connected in a sliding way in the first sliding groove; the axis of the third guide rod, the axis of the hinge shaft and the axis of the rotating shaft are arranged in parallel.
Further, the positioning mechanism further comprises a first air cylinder, the first air cylinder is fixedly arranged on the working platform, a push rod of the first air cylinder is vertically arranged, and the top end of the push rod of the first air cylinder is fixedly connected with the third guide rod; the projection of the push rod of the first air cylinder on the upper end face of the working platform falls outside the projection of the hinge shaft on the upper end face of the working platform.
Further, the detection mechanism further comprises a rotation driving component; the rotation driving assembly comprises a rotation disc, a motor and a gear;
the upper end of the support square tube is fixedly provided with a mounting plate, and the axis of the mounting plate and the axis of the working platform are on the same vertical line; the rotating disc is coaxially and rotatably arranged on the mounting plate, the motor is fixedly arranged on the mounting plate, and the axis of the motor is horizontally arranged; the gear is coaxially fixed on a motor shaft of the motor; a toothed ring meshed with the gear is coaxially and fixedly arranged on the rotating disc; the water pipe is connected with the rotating disc through a connecting piece; the rotating disc drives the water pipe to rotate around the axis of the working platform through the connecting piece.
Further, the connecting piece comprises a fourth connecting plate, a second connecting plate and a third connecting plate; the fourth connecting plate is fixedly arranged on the rotating disc; the second connecting plate is fixedly provided with a first guide rod, the fourth connecting plate is provided with a through hole, and the first guide rod slides through the through hole; the second connecting plate is positioned at one side of the fourth connecting plate, which is close to the axis of the working platform; the third connecting plate is fixedly arranged on the second connecting plate and fixedly connected with the water pipe.
Further, the detection mechanism further comprises a movement driving assembly; the mobile driving assembly comprises a second air cylinder; the second cylinder is fixedly arranged on the rotating disc, and the axis of the push rod of the second cylinder is horizontally arranged and points to the axis of the working platform; the push rod of the second cylinder movably penetrates through the fourth connecting plate and is fixedly connected with the second connecting plate.
Further, the lower end of the water pipe is rotatably provided with rollers, and the axes of the rollers are arranged along the radial direction of the working platform.
Compared with the prior art, the invention has the following beneficial effects: the water pipe rotates around the axis of the working platform, so that the water diversion component sprays bubble water to one circle of the pressure container, and a layer of bubble water is uniformly smeared on the outer surface of the pressure container. When the pressure vessel leaks, the bubble water assumes a bubble state due to the leaked gas. And meanwhile, the camera shoots the outer surface of the pressure container, uploads the acquired image to the computer, identifies the position of leakage through the identification of the computer, and marks the point of leakage. Therefore, when the pressure container is leaked and detected, workers are prevented from climbing up and down to spray bubble water to the pressure container due to the height of the pressure container, safety of the workers is guaranteed, and working efficiency is improved. And the fine leakage port can be accurately detected.
The pressure vessel is arranged at the axis of the working platform through the plurality of positioning components, so that the water diversion component can spray bubble water more uniformly on the pressure vessel.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a schematic view of the location of the positioning assembly of the present invention;
FIG. 4 is a schematic view of the structure of the rotating disc of the present invention;
FIG. 5 is an enlarged view of portion A of FIG. 4 in accordance with the present invention;
FIG. 6 is an enlarged view of portion B of FIG. 4 in accordance with the present invention;
FIG. 7 is a schematic view of the structure of the mounting plate of the present invention;
FIG. 8 is a schematic view of the structure of a rotating disc according to the present invention;
FIG. 9 is an enlarged view of section C of FIG. 8 in accordance with the present invention;
FIG. 10 is a schematic view of the structure of a water pipe according to the present invention;
FIG. 11 is an enlarged view of portion D of FIG. 10 in accordance with the present invention;
FIG. 12 is an enlarged view of portion E of FIG. 10 in accordance with the present invention;
FIG. 13 is a schematic view of a positioning mechanism according to the present invention;
FIG. 14 is an enlarged view of section F of FIG. 13 in accordance with the present invention;
FIG. 15 is an enlarged view of portion G of FIG. 13 in accordance with the present invention;
FIG. 16 is a schematic view of a first platen according to the present invention;
fig. 17 is a schematic structural view of a first connection plate in the present invention.
In the figure: 1. a working platform; 2. supporting the square tube; 3. a first cylinder; 4. a first connection plate; 5. a first platen; 6. a second pressing plate; 7. a rotating disc; 8. a second cylinder; 9. a mounting plate; 10. a water pipe; 11. a water dividing assembly; 12. a first chute; 13. a first ring; 14. a reinforcing plate; 15. a second ring; 16. a second chute; 17. a motor; 18. a gear; 19. a second connecting plate; 20. a third connecting plate; 21. a fourth connecting plate; 22. a first guide bar; 23. a camera; 24. a fifth connecting plate; 25. a ball valve; 26. an atomizing nozzle; 27. a first branch pipe; 28. a second branch pipe; 29. a spring; 30. a mounting base; 31. a rotating shaft; 32. a connecting block; 33. a second guide bar; 34. a guide groove; 35. a third guide bar; 36. a support block; 37. and a roller.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 17, the technical scheme adopted by the invention is as follows: a pressure vessel detection device comprises a working platform 1, a positioning mechanism, a detection mechanism and a camera 23.
The axis of the working platform 1 is arranged vertically. A plurality of support square pipes 2 are fixedly arranged on the working platform 1, and the support square pipes 2 are uniformly distributed along the circumference of the axis of the working platform 1. In the embodiment, three support square tubes 2 are arranged, and the circumferences of the three support square tubes 2 are uniformly distributed on the working platform 1.
Each support square tube 2 is provided with a positioning mechanism. The pressure vessel is placed on the working platform 1, and the axis of the pressure vessel and the axis of the working platform 1 are on the same vertical line under the action of the positioning mechanism.
Each positioning mechanism comprises a first cylinder 3 and a first connecting plate 4. The first connecting plate 4 is rotatably arranged on one side of the support square tube 2 through a hinge shaft. The axis of the work platform 1 is in the plane of rotation of the first connection plate 4. The first connection plate 4 includes a first connection section and a second connection section. The first connecting section is fixedly connected with the second connecting section, and an included angle is formed between the first connecting section and the second connecting section. The hinge shaft is positioned at the joint of the first connecting section and the second connecting section. An included angle is formed between the first connecting section and the second connecting section, and the second connecting section is inclined outwards. The upper end of the first connecting section is provided with a guide groove 34 along the length direction, a second guide rod 33 is slidably arranged in the guide groove 34, a pressure sensor is fixedly arranged on the bottom wall of the guide groove 34, and a spring 29 is fixedly connected between the second guide rod 33 and the pressure sensor. One end of the second guide rod 33 far away from the spring 29 is fixedly connected with a mounting seat 30, a connecting block 32 is rotatably mounted on the mounting seat 30 through a rotating shaft 31, a torsion spring is sleeved on the rotating shaft 31, one end of the torsion spring is fixedly connected with the mounting seat 30, and the other end of the torsion spring is fixedly connected with the connecting block 32. The connecting block 32 is fixedly provided with a first pressing plate 5 at one end far away from the rotating shaft 31. The length of the first presser plate 5 is inversely parallel to the axis of the second guide bar 33 under the action of the torsion spring.
The second connecting section is provided with a first chute 12, and the first chute 12 is arranged along the length direction of the second connecting section. A third guide rod 35 is slidably fitted in the first slide groove 12. The first cylinder 3 is fixedly arranged on the working platform 1, the axis of the push rod of the first cylinder 3 is vertically arranged, and the top end of the push rod of the first cylinder 3 is fixedly connected with the third guide rod 35. The projection of the push rod of the first air cylinder 3 on the upper end surface of the working platform 1 falls outside the projection of the hinge shaft on the upper end surface of the working platform 1. The axis of the third guide rod 35, the axis of the hinge shaft, and the axis of the rotary shaft 31 are disposed in parallel.
As shown in fig. 3, the pressure vessel is hoisted and placed on the working platform 1, and is placed between the plurality of positioning assemblies with a certain distance from the upper end surface of the working platform 1. The pressure vessel can smoothly move to the axle center of the working platform 1 under the action of the positioning component. The first air cylinder 3 is started to extend the push rod of the first air cylinder 3, the push rod of the first air cylinder 3 drives the third guide rod 35 to rise, the third guide rod 35 pushes the first connecting plate 4 to rotate anticlockwise around the hinge shaft, the first pressing plate 5 rotates around the direction of the hinge shaft to the pressure container, the upper end of the first pressing plate 5 is contacted with the pressure container first, the connecting block 32 overcomes the elasticity of the torsion spring and rotates around the rotating shaft 31, and the first pressing plate 5 is attached to the outer surface of the pressure container. With the rotation of the first connecting plate 4, the first pressing plate 5 pushes the second guide rod 33 through the connecting block 32, the rotating shaft 31 and the mounting seat 30 due to the blocking of the pressure container, so that the second guide rod 33 slides into the guide groove 34 against the elastic force of the spring 29, and the spring 29 is further compressed. Meanwhile, the first connecting plate 4 drives the first pressing plate 5 to move through the second guide rod 33, the rotating shaft 31 and the connecting block 32, so that the first pressing plate 5 slides downwards along the outer surface of the pressure container. As the first link plate 4 rotates, the second guide rod 33 gradually slides into the guide groove 34, and the spring 29 is further compressed, so that the pressure of the first pressure plate 5 to the pressure vessel gradually increases, and the reading value of the pressure sensor gradually increases.
When the position of the pressure vessel is shifted to one side, the distance from the pressure vessel to the positioning assembly which deflects the pressure vessel to the side is smaller, and thus, in the positioning assembly, the distance that the second guide rod 33 moves into the corresponding guide groove 34 is larger, and thus, the corresponding spring 29 has a larger elastic force, and the reading value of the corresponding pressure sensor is larger. I.e. the positioning assembly is more pressurized to the pressure vessel, and the positioning assembly will push the pressure vessel to move towards the axis of the working platform 1. Until the axis of the pressure vessel coincides with the axis of the working platform 1, the read values of the pressure sensors in the positioning assemblies are the same, i.e. the expansion and contraction amounts of the springs 29 in the positioning assemblies are the same, and the pressure of the positioning assemblies on the pressure vessel is the same.
The detection mechanism comprises a water pipe 10, a water diversion assembly, a rotation driving assembly and a movement driving assembly.
The water pipe 10 is rotatably provided on the work platform 1, and the water pipe 10 is rotated about the axis of the work platform 1. The lower end of the water pipe 10 is rotatably provided with a roller 37, and the axis of the roller 37 is arranged along the radial direction of the working platform 1. The upper end of the water pipe 10 communicates with a bubble water supply tank.
The upper end of the support square tube 2 is fixedly provided with a mounting plate 9, and the axis of the mounting plate 9 coincides with the axis of the working platform 1. Both the rotary drive assembly and the mobile drive assembly are arranged on the mounting plate 9.
The rotary drive assembly comprises a rotary disc 7, a motor 17, a gear 18.
The rotating disk 7 is coaxially rotatably provided on the mounting plate 9. Specifically, an annular second chute 16 is formed on the mounting plate 9, and the axis of the second chute 16 coincides with the axis of the mounting plate 9. The rotating disk 7 is rotatably arranged in the second chute 16. A plurality of second pressing plates 6 are fixedly arranged on the mounting plate 9 along the circumferential direction, and the lower surfaces of the second pressing plates 6 are in sliding fit with the upper end face of the rotating disc 7. The rotating disc 7 comprises a first circular ring 13, a reinforcing plate 14 and a second circular ring 15. The first ring 13 and the second ring 15 are coaxially arranged and coaxial with the mounting plate 9. The radius of the first ring 13 is larger than the radius of the second ring 15. The first ring 13 and the second ring 15 are fixedly connected by a reinforcing plate 14. The reinforcing plates 14 have a plurality of reinforcing plates 14 uniformly distributed along the circumference of the first ring 13. The lower end of the second circular ring 15 is coaxially and fixedly provided with a toothed ring. The motor 17 is fixedly arranged on the mounting plate 9, the gear 18 is coaxially and fixedly arranged on the motor shaft of the motor 17, and the gear 18 is meshed with the toothed ring.
The rotating disc 7 is connected with a water pipe 10 through a connecting piece. The connecting piece comprises a fourth connecting plate 21, a second connecting plate 19 and a third connecting plate 20. The fourth connecting plate 21 is fixedly arranged on the rotating disc 7. The second connecting plate 19 is fixedly provided with a first guide rod 22, the fourth connecting plate 21 is provided with a through hole, and the first guide rod 22 slides through the through hole. The second connection plate 19 is located on the side of the fourth connection plate 21 close to the axis of the work platform 1. The third connecting plate 20 is fixedly arranged on the second connecting plate 19, and the third connecting plate 20 is fixedly connected with the water pipe 10.
The motor 17 is started, the motor 17 drives the gear 18 to rotate, the gear 18 drives the toothed ring to rotate, the rotating disc 7 is further rotated, and the rotating disc 7 drives the water pipe 10 to rotate through the fourth connecting plate 21, the first guide rod 22, the second connecting plate 19 and the third connecting plate 20, so that the water pipe 10 rotates around the axis of the working platform 1.
The mobile drive assembly comprises a second cylinder 8. The second cylinder 8 is fixedly mounted on the rotating disc 7, and the axis of the push rod of the second cylinder 8 is horizontally arranged and points to the axis of the working platform 1. Specifically, the support block 36 is fixedly provided on the rotating disk 7. The second cylinder 8 is fixed to the support block 36. The support block 36 has a supporting effect on the second cylinder 8. The push rod of the second air cylinder 8 passes through the fourth connecting plate 21 and is fixedly connected with the second connecting plate 19.
The push rod of the second cylinder 8 is extended to move the second connection plate 19 in the direction of the axis of the mounting plate 9, and the water pipe 10 is brought close to the pressure vessel.
The water diversion assembly has a plurality of water diversion assemblies which are arranged along the axial direction of the water pipe 10 and face to the axis of the working platform 1.
The water distribution assembly comprises a second branch pipe 28, a first branch pipe 27 and an atomizing nozzle 26. The second branch pipe 28 communicates with the water pipe 10 through the third branch pipe. The axis of the second branch pipe 28 is parallel to the axis of the water pipe 10. The third branch pipe is provided with a ball valve 25, and the second branch pipe 28 is communicated with the water pipe 10 through the ball valve 25. The first branch pipes 27 have a plurality, the plurality of first branch pipes 27 are distributed in the axial direction of the second branch pipe 28, and one end of the first branch pipe 27 communicates with the second branch pipe 28. The axis of the first branch pipe 27 is perpendicular to the axis of the second branch pipe 28 and faces the axis of the work platform 1. An atomizer 26 is installed at one end of each first branch pipe 27 far away from the second branch pipe 28, the atomizer 26 is communicated with the first branch pipe 27, and a water outlet of the atomizer 26 faces the pressure container.
A fifth connection plate 24 is fixedly installed on the outer circumferential surface of the water pipe 10. The fifth connection plates 24 have a plurality of, a plurality of fifth connection plates 24 are arranged along the axial direction of the water pipe 10, and each fifth connection plate 24 is fixedly provided with a camera 23. The camera 23 is oriented towards the axis of the work platform 1.
Also included is a computer. The camera 23, the second cylinder 8, the first cylinder 3, the motor 17 and the pressure sensor are all electrically connected with the computer. Specifically, the operations of the motor 17, the second cylinder 8, and the first cylinder 3 are controlled by a computer. The camera 23 transmits the acquired image data to a computer, which calculates the height of the pressure vessel where the leak is located from the image data. The computer calculates the rotation angle of the water outlet pipe 10 around the axis of the working platform 1 according to the rotation speed and time of the motor 17 and the transmission ratio of the gear and the toothed ring, and further determines the circumferential position of the leakage position.
Working principle: in the initial state, the first cylinder 3 and the second cylinder 8 are in a contracted state, and the ball valve 25 is in a closed state. The first connecting section on the first connecting plate 4 is in a vertical state, and the third guide rod 35 is positioned at one end of the first sliding groove 12 away from the hinge shaft. Under the action of the torsion spring, the first pressing plate 5 is in a vertical state.
In use, a pressure vessel is placed onto the work platform 1 by the hooks and placed between the plurality of locating assemblies. When the bottom of the pressure vessel is at a distance from the upper end surface of the working platform 1. The first cylinder 3 is activated to extend the push rod of the first cylinder 3, and the first cylinder 3 pushes the third guide rod 35 to raise the third guide rod 35. The third guide rod 35 pushes the first connecting plate 4 to enable the first connecting plate 4 to rotate anticlockwise around the hinge shaft, so that the first connecting plate 4 moves to a horizontal state, further the first pressing plate 5 rotates anticlockwise around the hinge shaft, the upper end of the first pressing plate 5 is firstly contacted with the pressure container, along with the rotation of the first connecting plate 4, the connecting block 32 overcomes the elasticity of the torsion spring to rotate around the rotating shaft 31, and further the first pressing plate 5 is attached to the outer surface of the pressure container. Then, along with the rotation of the first connecting plate 4, the first connecting plate 4 drives the first pressing plate 5 through the second guide rod 33 and the connecting block 32, so that the first pressing plate 5 slides downwards along the outer surface of the pressure container. At the same time, due to the limit of the pressure vessel, the second guide rod 33 moves into the guide groove 34, so that the spring 29 is further compressed, and the reading value of the pressure sensor is further increased.
If the axis of the pressure vessel does not coincide with the axis of the working platform 1, i.e. the pressure vessel is offset towards one of the positioning assemblies, the reading of the pressure sensor in the positioning assembly towards which the pressure vessel is offset is greater than the reading of the pressure sensor in the other positioning assembly, and the springs 29 in the positioning assembly towards which the pressure vessel is offset have a greater thrust against the respective first pressure plate 5, i.e. the pressure of the positioning assembly against the pressure vessel is greater, which in turn will push the pressure vessel towards the axis of the working platform 1. Until the axis of the pressure vessel coincides with the axis of the working platform 1, the read values of the pressure sensors in the positioning assemblies are the same, i.e. the expansion and contraction amounts of the springs 29 in the positioning assemblies are the same, and the pressure of the positioning assemblies on the pressure vessel is the same.
The hooks are then controlled to move the pressure vessel downwards until the pressure vessel is placed on the work platform 1. The axis of the pressure vessel coincides with the axis of the working platform 1 at this time. Thus, the water diversion component can evenly spray the bubble water on the outer wall of the pressure container.
After the pressure container is placed, the push rod of the first air cylinder 3 is shortened, the push rod of the first air cylinder 3 drives the third guide rod 35 to move downwards, the first connecting plate 4 rotates clockwise around the hinge shaft, and the first connecting plate 4 moves to the vertical state. While the third guide bar 35 slides along the first runner 12 and toward the end of the first runner 12 remote from the hinge shaft. The first presser plate 5 slides upward along the surface of the pressure vessel while the second guide bar 33 rotates around the rotation shaft 31, and while the second guide bar 33 gradually moves outward of the guide groove 34 along the guide groove 34 under the action of the spring 29, the reading value of the pressure sensor gradually decreases. And along with the rotation of the first connecting plate 4, the first pressing plate 5 is gradually separated from the pressure vessel, and after the first pressing plate 5 is separated from the pressure vessel, the first pressing plate 5 is restored to the initial state under the action of the torsion spring. Until the first connecting plate 4 returns to the original state, the first cylinder 3 is stopped.
And then, introducing clean air into the pressure container to enable the pressure inside the pressure container to be higher than the external atmospheric pressure, and then maintaining the pressure.
After the pressure maintaining is finished, the second air cylinder 8 is started, the push rod of the second air cylinder 8 is extended, the second air cylinder 8 pushes the second connecting plate 19 to move towards the axis close to the working platform 1, meanwhile, the first guide rod 22 slides along the fourth connecting plate 21, the second connecting plate 19 drives the water pipe 10 to move towards the axis close to the working platform 1 through the third connecting plate 20, and then the water diversion assembly is moved towards the direction close to the pressure container. After a suitable distance between the water distribution assembly and the pressure vessel, the second cylinder 8 is stopped.
The proper distance between the water diversion assembly and the pressure vessel means that the third guide bar 35 should be related to the pressure of bubble water sprayed from the third guide bar 35, so that water can be sprayed to the outer surface of the pressure vessel when the third guide bar 35 sprays water.
The corresponding third guide bar 35 is opened according to the height of the pressure vessel. Then the motor 17 is started, the motor 17 drives the rotating disc 7 to rotate around the axis of the working platform 1 through the cooperation of the gear 18 and the toothed ring, and the rotating disc 7 drives the movable driving assembly and the water pipe 10 to rotate around the axis of the working platform 1 together, so that the water pipe 10 rotates around the pressure container. Meanwhile, bubble water is introduced into the water pipe 10, the bubble water in the water pipe 10 is sprayed to the pressure vessel through the water distribution assembly, and the water distribution assembly sprays the bubble water to one circle of the pressure vessel along with the rotation of the water pipe 10, so that the outer surface of the pressure vessel is uniformly coated with one layer of bubble water. When the pressure vessel leaks, the bubble water assumes a bubble state due to the leaked gas. At the same time, the camera 23 shoots the outer surface of the pressure vessel and uploads the acquired image to the computer, and the position of the leakage is determined through the identification of the computer and the point of the leakage is marked.
Specifically, the upper end face of the working platform 1 can be marked by an angle with the axis of the working platform 1 as the center of a circle, and the angle is marked from 0 to 360 degrees according to the rotation direction of the water pipe 10. Initially, the water pipe 10 is positioned on a 0 degree line. The cameras 23 are numbered sequentially from bottom to top, each camera 23 shoots a part with a certain height on the pressure vessel, and the pressure vessel is partitioned in height according to the height corresponding to the camera 23. The rotation angular speed of the rotating disc 7 is calculated according to the rotation speed of the motor 17 and the transmission ratio of the gear to the toothed ring, the angle on the working platform 1 corresponding to the leakage position is determined according to the starting time of the motor 17, the position of the leakage position on the pressure container is determined according to the number of the camera 23, and the height of the leakage point is determined according to the position of the bubble on the image.
Therefore, when the pressure container is leaked and detected, workers are prevented from climbing up and down to spray bubble water to the pressure container due to the height of the pressure container, safety of the workers is guaranteed, and working efficiency is improved. And the fine leakage port can be accurately detected.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.

Claims (10)

1. The utility model provides a pressure vessel detection device, includes work platform (1) and bubble water supply box of placing pressure vessel, its characterized in that: a positioning mechanism and a detection mechanism are arranged on the working platform (1);
a plurality of support square tubes (2) are fixedly arranged on the working platform (1), the support square tubes (2) are circumferentially distributed along the axis of the working platform (1), and each support square tube (2) is provided with a positioning mechanism; the positioning mechanism enables the axis of the pressure vessel to coincide with the axis of the working platform (1);
the detection mechanism comprises a water pipe (10), a water diversion assembly and a camera (23); the water pipe (10) is rotatably arranged on the working platform (1), the water pipe (10) rotates around the axis of the working platform (1), and the axis of the water pipe (10) is parallel to the axis of the working platform (1); the water diversion assembly is provided with a plurality of water diversion assemblies which are arranged along the axial direction of the water pipe (10); the water pipe (10) is communicated with the bubble water supply tank; the cameras (23) are multiple, and the cameras (23) are fixedly arranged on the water pipe (10) along the axial direction of the water pipe (10); when the water pipe (10) rotates around the axis of the working platform (1), the water distribution assembly sprays bubble water on the outer surface of the pressure container in a circle, and the camera (23) shoots the outer surface of the pressure container.
2. A pressure vessel inspection apparatus as defined in claim 1, wherein: the water diversion assembly comprises a second branch pipe (28), a first branch pipe (27) and an atomization nozzle (26); the second branch pipe (28) is communicated with the water pipe (10) through a third branch pipe; the axis of the second branch pipe (28) is parallel to the axis of the water pipe (10); a ball valve (25) is arranged on the third branch pipe, and the second branch pipe (28) is communicated with the water pipe (10) through the ball valve (25); the first branch pipes (27) are provided with a plurality of first branch pipes (27) which are distributed along the axial direction of the second branch pipes (28), and one end of each first branch pipe (27) is communicated with the second branch pipe (28); an atomizing nozzle (26) is arranged at one end of each first branch pipe (27) far away from the second branch pipe (28), and the atomizing nozzle (26) is communicated with the first branch pipe (27); the water outlet of the atomizing nozzle (26) faces the pressure vessel.
3. A pressure vessel inspection apparatus as defined in claim 1, wherein: the positioning mechanism comprises a first connecting plate (4); the first connecting plate (4) rotates and sets up in one side of support side pipe (2), has seted up guide way (34) along length direction on first connecting plate (4), and sliding connection has second guide bar (33) on guide way (34), and fixed mounting has pressure sensor on the diapire of guide way (34), and the rigid coupling has spring (29) between second guide bar (33) and the pressure sensor, and the axis of work platform (1) is in the rotation plane of second guide bar (33).
4. A pressure vessel inspection apparatus as claimed in claim 3, wherein: one end, far away from the spring (29), of the second guide rod (33) is fixedly connected with a mounting seat (30), a connecting block (32) is rotatably arranged on the mounting seat (30) through a rotating shaft (31), a torsion spring is sleeved on the rotating shaft (31), one end of the torsion spring is fixedly connected with the mounting seat (30), and the other end of the torsion spring is fixedly connected with the connecting block (32); one end of the connecting block (32) far away from the rotating shaft (31) is fixedly provided with a first pressing plate (5).
5. A pressure vessel inspection apparatus as claimed in claim 3, wherein: the first connecting plate (4) comprises a first connecting section and a second connecting section; the first connecting section is fixedly connected with the second connecting section, and the joint of the first connecting section and the second connecting section is rotationally connected with the support square tube (2) through a hinge shaft; the guide groove (34) is positioned on the first connecting section; the second connecting section is provided with a first chute (12) along the length direction; a third guide rod (35) is connected in a sliding way in the first sliding groove (12); the axis of the third guide rod (35), the axis of the hinge shaft and the axis of the rotating shaft (31) are arranged in parallel.
6. The pressure vessel inspection device of claim 5, wherein: the positioning mechanism further comprises a first air cylinder (3), the first air cylinder (3) is fixedly arranged on the working platform (1), a push rod of the first air cylinder (3) is vertically arranged, and the top end of the push rod of the first air cylinder (3) is fixedly connected with the third guide rod (35); the projection of the push rod of the first air cylinder (3) on the upper end surface of the working platform (1) falls outside the projection of the hinge shaft on the upper end surface of the working platform (1).
7. A pressure vessel inspection apparatus as defined in claim 1, wherein: the detection mechanism further comprises a rotation driving component; the rotary driving assembly comprises a rotary disc (7), a motor (17) and a gear (18);
the upper end of the support square tube (2) is fixedly provided with a mounting plate (9), and the axis of the mounting plate (9) and the axis of the working platform (1) are on the same vertical line; the rotating disc (7) is coaxially and rotatably arranged on the mounting plate (9), the motor (17) is fixedly arranged on the mounting plate (9), and the axis of the motor (17) is horizontally arranged; the gear (18) is coaxially fixed on a motor shaft of the motor (17); a toothed ring meshed with the gear (18) is coaxially and fixedly arranged on the rotating disc (7); the water pipe (10) is connected with the rotating disc (7) through a connecting piece; the rotating disc (7) drives the water pipe (10) to rotate around the axis of the working platform (1) through the connecting piece.
8. The pressure vessel inspection device of claim 7, wherein: the connecting piece comprises a fourth connecting plate (21), a second connecting plate (19) and a third connecting plate (20); the fourth connecting plate (21) is fixedly arranged on the rotating disc (7); the second connecting plate (19) is fixedly provided with a first guide rod (22), the fourth connecting plate (21) is provided with a perforation, and the first guide rod (22) slides through the perforation; the second connecting plate (19) is positioned on one side of the fourth connecting plate (21) close to the axis of the working platform (1); the third connecting plate (20) is fixedly arranged on the second connecting plate (19), and the third connecting plate (20) is fixedly connected with the water pipe (10).
9. The pressure vessel inspection device of claim 8, wherein: the detection mechanism further comprises a movement driving assembly; the movement driving assembly comprises a second cylinder (8); the second air cylinder (8) is fixedly arranged on the rotating disc (7), and the axis of a push rod of the second air cylinder (8) is horizontally arranged and points to the axis of the working platform (1); the push rod of the second air cylinder (8) passes through the fourth connecting plate (21) and is fixedly connected with the second connecting plate (19).
10. A pressure vessel inspection apparatus as defined in claim 1, wherein: the lower end of the water pipe (10) is rotatably provided with a roller (37), and the axis of the roller (37) is arranged along the radial direction of the working platform (1).
CN202310586740.7A 2023-05-24 2023-05-24 Pressure vessel detection device Active CN116296112B (en)

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