Pressure container

Abstract

The utility model provides a pressure container which comprises a tank body, a cover plate, a three-jaw chuck and a pressing plate. A top opening is formed in the top of the tank body, a medium cavity hole, a first mounting hole and a second mounting hole of which the diameters are gradually increased are sequentially formed in the tank body from bottom to top, and the diameter of the top opening is smaller than that of the second mounting hole; the cover plate is a cylinder and is hermetically mounted at the bottom of the first mounting hole; the three-jaw chuck is installed on the cover plate and provided with three clamping jaws capable of synchronously stretching out or contracting. The pressing plate comprises three concentric arc-shaped rings, the three arc-shaped rings are connected with the three clamping jaws respectively, the minimum outer diameter of the three contracted arc-shaped rings is smaller than the diameter of the top opening, so that the arc-shaped rings can be taken out from the tank body without being restrained, and the cover plate can be opened; the three arc-shaped rings can stretch into the second mounting holes and can abut against the edge of the cover plate when the clamping jaws stretch out, so that the cover plate is closed, the cover plate is easy to disassemble and assemble, and frequent disassembly and assembly are facilitated.

Description

Technical Field

[0001] The utility model relates to a pressure vessel. Background Technique

[0002] A pressure vessel is a sealed container that bears gas or liquid pressure inside or outside and has high requirements for safety. It is widely used in petrochemical, machinery, metallurgy, nuclear energy, aviation, aerospace and other departments and is an essential core equipment in the production process.

[0003] At present, for conventional pressure vessels, the connection method between the tank body and the cover plate is to use bolts and nuts. This connection method is simple and reliable and can meet the use requirements of most pressure vessels. However, for large-capacity pressure vessels with high pressure and extra-high pressure that need to be frequently opened and closed, using the bolt and nut connection method will cause great inconvenience in actual use and may even pose potential safety hazards.

[0004] For large-capacity high-pressure pressure vessels, the connection bolts between the tank body and the cover plate are large in size and numerous in quantity. When disassembling and installing the cover plate, not only a special pneumatic or hydraulic wrench is required, but at least two people need to cooperate simultaneously to complete the disassembly and assembly, which is time-consuming and laborious. At the same time, after frequent disassembly and assembly, the bolts will have problems such as excessive wear, reduced fatigue strength, and damage to the surface anti-corrosion coating, resulting in rust and even fracture of the bolts, posing a great safety hazard. Content of the Utility Model

[0005] In view of this, the utility model provides a pressure vessel to solve the technical problems that the cover plate of the pressure vessel proposed in the above background technique is cumbersome to disassemble and assemble and cannot be disassembled and assembled frequently.

[0006] The technical solution of the utility model is realized as follows:

[0007] The utility model provides a pressure vessel, including a tank body, a cover plate, a three-jaw chuck and a pressing plate, wherein:

[0008] A top opening is provided at the top of the tank body. The tank body is successively provided with a medium cavity hole, a first installation hole and a second installation hole with gradually increasing diameters from bottom to top. The diameter of the top opening is smaller than the diameter of the second installation hole;

[0009] The cover plate is a cylinder and is sealed and installed at the bottom of the first installation hole;

[0010] The three-jaw chuck is installed on the cover plate, and the three-jaw chuck is provided with three jaws that can be synchronously extended or retracted;

[0011] The pressing plate includes three concentric arc-shaped rings, the three arc-shaped rings are respectively connected to the three clamping claws, and the minimum outer diameter after contraction of the three arc-shaped rings is smaller than the diameter of the top opening; when the clamping claws extend out, the three arc-shaped rings can extend into the second mounting hole and can press against the edge of the cover plate.

[0012] On the basis of the above technical solutions, preferably, it further includes three connecting rods, one end of the connecting rod is connected to the clamping claw, and the other end is connected to the arc-shaped ring.

[0013] On the basis of the above technical solutions, preferably, the maximum outer diameter after the three arc-shaped rings extend out is larger than the outer diameter of the cover plate, and the maximum inner diameter after extension is smaller than the outer diameter of the cover plate.

[0014] On the basis of the above technical solutions, preferably, the thickness of the cover plate is equal to the depth of the first mounting hole.

[0015] On the basis of the above technical solutions, preferably, the cover plate is provided with an exhaust hole penetrating along the axial direction, and the exhaust valve is installed at the top of the exhaust hole.

[0016] On the basis of the above technical solutions, preferably, it further includes a lifting ring, and the lifting ring is installed on the top surface of the cover plate.

[0017] On the basis of the above technical solutions, preferably, it further includes a wrench, the wrench is arranged on the three-jaw chuck and extends out of the top opening.

[0018] On the basis of the above technical solutions, preferably, it further includes a sealing ring, a sealing groove is arranged on the outer wall of the cover plate, and the sealing ring is arranged in the sealing groove.

[0019] On the basis of the above technical solutions, preferably, it further includes a water inlet joint and a water outlet joint. Water inlet holes and water outlet holes communicating with the top and bottom of the medium cavity hole respectively are arranged on the side wall of the tank body. The water inlet joint is connected to the water inlet hole, and the water outlet joint is connected to the water outlet hole.

[0020] On the basis of the above technical solutions, preferably, the cover plate is provided with threaded holes, and the three-jaw chuck is provided with fixing holes;

[0021] It further includes mounting screws, and the mounting screws pass through the fixing holes and are connected to the threaded holes.

[0022] The pressure vessel of the present utility model has the following beneficial effects compared with the prior art:

[0023] (1) By synchronously extending or contracting the three jaws of the three-jaw chuck, the three arc-shaped rings are driven to extend or contract. The minimum outer diameter after the contraction of the three arc-shaped rings is smaller than the diameter of the top opening, so that the arc-shaped rings can be taken out of the tank without restraint, and thus the cover plate can be opened. When the jaws extend, the three arc-shaped rings can extend into the second mounting holes and press against the edge of the cover plate, thereby closing the cover plate. The disassembly and assembly of the cover plate are simple, which is convenient for frequent disassembly and assembly;

[0024] (2) One end of the connecting rod is connected to the jaw, and the other end is connected to the arc-shaped ring. The extension or contraction of the jaw is transmitted to the arc-shaped ring through the connecting rod, so that the movement of the three-jaw chuck has an amplification effect, which can reduce the specification size of the three-jaw chuck and reduce the cost;

[0025] (3) The maximum outer diameter after the extension of the three arc-shaped rings is larger than the outer diameter of the cover plate, and the maximum inner diameter after the extension is smaller than the outer diameter of the cover plate. Therefore, when the jaws extend, the three arc-shaped rings can press against the edge of the cover plate, ensuring that the cover plate is stably closed on the medium cavity hole of the tank, improving the stability and reliability of the device;

[0026] (4) By providing a sealing ring, a sealing groove is provided on the outer wall of the cover plate, and the sealing ring is arranged in the sealing groove to realize the sealing between the cover plate and the tank, ensuring the sealing performance of the pressure vessel and improving the reliability and stability. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a cross-sectional view of the pressure vessel of the present invention;

[0029] Figure 2 It is an exploded view of the pressure vessel of the present invention;

[0030] Figure 3 It is a cross-sectional view of the tank of the present invention;

[0031] Figure 4 It is a cross-sectional view of the cover plate of the present invention;

[0032] Figure 5 It is a schematic diagram of the pressing plate extending to the maximum diameter of the present invention;

[0033] Figure 6 Schematic diagram of the pressing plate of the present utility model shrunk to the minimum diameter.

[0034] Explanation of reference numerals: 1 - tank body, 2 - cover plate, 3 - three - jaw chuck, 4 - pressing plate, 5 - connecting rod, 6 - exhaust valve, 7 - lifting ring, 8 - wrench, 9 - sealing ring, 10 - mounting screw, 100 - water inlet joint, 200 - water outlet joint;

[0035] 11 - top opening, 12 - medium cavity hole, 13 - first mounting hole, 14 - second mounting hole, 15 - water inlet hole, 16 - water outlet hole;

[0036] 21 - exhaust hole, 22 - sealing groove, 23 - threaded hole;

[0037] 31 - jaw, 32 - fixing hole;

[0038] 41 - arc ring, 411 - connecting hole;

[0039] 51 - thread. Detailed implementation manners

[0040] Next, in combination with the implementation manners of the present utility model, the technical solutions in the implementation manners of the present utility model will be described clearly and completely. Obviously, the described implementation manners are only a part of the implementation manners of the present utility model, rather than all of the implementation manners. Based on the implementation manners in the present utility model, all other implementation manners obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0041] Refer to Figures 1 - 6 As shown, an embodiment of the present utility model provides a pressure vessel, including a tank body 1, a cover plate 2, a three - jaw chuck 3 and a pressing plate 4, wherein:

[0042] A top opening 11 is provided at the top of the tank body 1. The tank body 1 is successively provided with medium cavity holes 12, first mounting holes 13 and second mounting holes 14 with gradually increasing diameters from bottom to top. The diameter of the top opening 11 is smaller than the diameter of the second mounting hole 14, and the diameter of the top opening 11 can be equal to the diameter of the first mounting hole 13, as long as it is convenient for the cover plate 2 to enter and exit;

[0043] The cover plate 2 is a cylinder, and the cover plate 2 is sealingly mounted at the bottom of the first mounting hole 13;

[0044] The three - jaw chuck 3 is mounted on the cover plate 2, and the three - jaw chuck 3 is provided with three jaws 31 that can be synchronously extended or retracted; The three - jaw chuck 3 includes a chuck, jaws 31 and a driving mechanism. By rotating the chuck to drive the driving mechanism to move, the three jaws 31 are driven to be synchronously extended or retracted.

[0045] The pressing plate 4 includes three concentric arc-shaped rings 41. The three arc-shaped rings 41 are respectively connected to the three clamping jaws 31. The minimum outer diameter after the contraction of the three arc-shaped rings 41 is smaller than the diameter of the top opening 11. When the clamping jaws 31 extend, the three arc-shaped rings 41 can extend into the second mounting hole 14 and can press against the edge of the cover plate 2.

[0046] For the pressure vessel proposed in this embodiment, through the synchronous extension or contraction of the three clamping jaws 31 of the three-jaw chuck 3, the three arc-shaped rings 41 are driven to extend or contract. The minimum outer diameter after the contraction of the three arc-shaped rings 41 is smaller than the diameter of the top opening 11, so that the arc-shaped rings 41 can be taken out of the tank body 1 without being restricted, and thus the cover plate 2 can be opened. When the clamping jaws 31 extend, the three arc-shaped rings 41 can extend into the second mounting hole 14 and can press against the edge of the cover plate 2, thereby closing the cover plate 2. The disassembly and assembly of the cover plate 2 are simple, which is convenient for frequent disassembly and assembly.

[0047] In some embodiments, the pressure vessel further includes three connecting rods 5. One end of the connecting rod 5 is connected to the clamping jaw 31, and the other end is connected to the arc-shaped ring 41. One end of the connecting rod 5 can be fixedly connected to the clamping jaw 31 by welding. The other end of the connecting rod 5 is provided with a thread 51, and the arc-shaped ring 41 is provided with a connecting hole 411 along the radial direction. After the connecting rod 5 passes through the connecting hole 411, it is fixedly connected by a bolt. By connecting one end of the connecting rod 5 to the clamping jaw 31 and the other end to the arc-shaped ring 41, the extension or contraction of the clamping jaw 31 is transmitted to the arc-shaped ring 41 through the connecting rod 5, so that the movement of the three-jaw chuck 3 has an amplification effect, thereby reducing the specification size of the three-jaw chuck 3 and lowering the cost.

[0048] In some embodiments, the maximum outer diameter after the extension of the three arc-shaped rings 41 is larger than the outer diameter of the cover plate 2, and the maximum inner diameter after the extension is smaller than the outer diameter of the cover plate 2. By making the maximum outer diameter after the extension of the three arc-shaped rings 41 larger than the outer diameter of the cover plate 2 and the maximum inner diameter after the extension smaller than the outer diameter of the cover plate 2, when the clamping jaws 31 extend, the three arc-shaped rings 41 can press against the edge of the cover plate 2, ensuring that the cover plate 2 is stably covered on the medium cavity hole 12 of the tank body 1 and improving the stability and reliability of the device.

[0049] In some embodiments, the thickness of the cover plate 2 is equal to the depth of the first mounting hole 13. By setting the thickness of the cover plate 2 to be equal to the depth of the first mounting hole 13, when the cover plate 2 is placed in the first mounting hole 13, it can just adapt to the depth of the first mounting hole 13 to fill the first mounting hole 13, and the bottom of the first mounting hole 13 can position and limit the cover plate 2.

[0050] In some embodiments, the thickness of the arc-shaped ring 41 is less than the depth of the second mounting hole 14. By setting the thickness of the arc-shaped ring 41 to be less than the depth of the second mounting hole 14, before injecting the medium into the medium cavity hole 12 or after discharging the medium in the medium cavity hole 12, the arc-shaped ring 41 moves downward due to gravity and maintains a certain gap with the uppermost end of the second mounting hole 14, facilitating the movement of the arc-shaped ring 41 within the second mounting hole 14 and improving reliability; when the medium is input, the medium pressure causes the cover plate 2 and the arc-shaped ring 41 to move upward a short distance, such that the top of the arc-shaped ring 41 fits against the uppermost section of the second mounting hole 14, and the arc-shaped ring 41 is limited by the inner wall at the top opening 11 of the tank body 1, thereby locking the cover plate 2.

[0051] In some embodiments, the cover plate 2 is provided with an exhaust hole 21 penetrating in the axial direction, and the exhaust valve 6 is installed at the top of the exhaust hole 21. By providing the exhaust hole 21, when injecting the liquid medium, the air in the tank body 1 can be discharged. After the gas is discharged, the exhaust valve 6 is closed, enabling the liquid to fill the tank body 1, facilitating the full-capacity placement of the liquid medium, and improving the reliability and stability of the device.

[0052] In some embodiments, the pressure vessel further includes a lifting ring 7, and the lifting ring 7 is installed on the top surface of the cover plate 2. By providing the lifting ring 7, it is convenient to lift the cover plate 2 out of the tank body 1, improving the convenience of removing the cover plate 2 and thus enhancing reliability.

[0053] In some embodiments, the pressure vessel further includes a wrench 8, and the wrench 8 is disposed on the three-jaw chuck 3 and extends out of the top opening 11. By disposing the wrench 8 on the three-jaw chuck 3 and extending it out of the top opening 11, simply rotating the wrench 8 can achieve the rapid disassembly and installation of the cover plate 2 without the need for special tools, saving time and effort.

[0054] In some embodiments, the pressure vessel further includes a sealing ring 9. A sealing groove 22 is provided on the outer wall of the cover plate 2, and the sealing ring 9 is disposed in the sealing groove 22. By providing the sealing ring 9, with the sealing groove 22 provided on the outer wall of the cover plate 2 and the sealing ring 9 disposed in the sealing groove 22, the sealing between the cover plate 2 and the tank body 1 is achieved, ensuring the sealing performance of the pressure vessel and improving reliability and stability. In actual design, two sealing grooves 22 can be provided, and two corresponding sealing rings 9 are also provided. When one sealing ring 9 is damaged or has poor sealing, the other sealing ring 9 can provide further sealing, improving the reliability and stability of the device.

[0055] In some embodiments, the pressure vessel further includes a water inlet joint 100 and a water outlet joint 200. Water inlet holes 15 and water outlet holes 16 are provided on the side wall of the tank body 1, which are respectively communicated with the top and bottom of the medium cavity hole 12. The water inlet joint 100 is connected to the water inlet hole 15, and the water outlet joint 200 is connected to the water outlet hole 16. The water inlet hole 15 is arranged at the top of the medium cavity hole 12, so as to ensure that the maximum capacity of water can be flushed into the medium cavity hole 12. The water outlet hole 16 is arranged at the bottom of the medium cavity hole 12, so that all the water in the medium cavity hole 12 can be discharged, improving stability and reliability. The water inlet joint 100 is connected to the water inlet hole 15 and is used to externally connect a water inlet pipe to inject water into the medium cavity hole 12. The water outlet joint 200 is connected to the water outlet hole 16 and is used to externally connect a water outlet pipe to drain water from the medium cavity hole 12.

[0056] In some embodiments, threaded holes 23 are provided on the cover plate 2, and fixing holes 32 are provided on the three-jaw chuck 3. An installation screw 10 is further included. The installation screw 10 passes through the fixing hole 32 and is connected to the threaded hole 23. Since there is a gap between the installation position of the three-jaw chuck 3 and the cover plate 2, the installation screw 10 is a long screw. After the installation screw 10 passes through the fixing hole 32, it is connected to the threaded hole 23, thereby completing the connection and fixing of the three-jaw chuck 3 and the cover plate 2.

[0057] The working principle of this pressure vessel is as follows: Before injecting the medium into the medium cavity hole 12 or after discharging the medium in the medium cavity hole 12, the cover plate 2 is in an unlocked state. Due to gravity, the arc-shaped ring 41 moves downward and maintains a certain gap with the uppermost end of the second installation hole 14. The clamping jaws 31 extend out, so that the three arc-shaped rings 41 extend into the second installation hole 14 and press against the edge of the cover plate 2. When the medium is input, the medium pressure causes the cover plate 2 and the arc-shaped ring 41 to move upward a small distance, so that the top of the arc-shaped ring 41 fits the uppermost section of the second installation hole 14, and the arc-shaped ring 41 is limited by the inner wall at the opening 11 of the top of the tank body 1, thereby locking the cover plate 2. By simply rotating the wrench 8, the three clamping jaws 31 can be synchronously extended or retracted, completing the quick disassembly and installation of the cover plate 2 without the need for special tools, saving time and effort.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure vessel, characterized in that: It includes a tank body, a cover plate, a three-jaw chuck and a pressure plate, wherein: The tank body is provided with a top opening at the top, and the tank body is provided with a medium cavity hole, a first mounting hole and a second mounting hole with gradually increasing diameters from the bottom upward, and the diameter of the top opening is smaller than the diameter of the second mounting hole; The cover plate is a cylinder, and the cover plate is sealed and installed at the bottom of the first installation hole; The three-jaw chuck is mounted on the cover plate, and the three-jaw chuck is provided with three jaws that can be extended or retracted synchronously; The pressure plate includes three concentric arc rings, which are respectively connected to the three claws, and the minimum outer diameter of the three arc rings after shrinkage is smaller than the diameter of the top opening; the three arc rings can extend into the second mounting hole and can press against the edge of the cover plate when the claws are extended.

2. The pressure vessel according to claim 1, characterized in that It also includes three connecting rods, one end of which is connected to the claw, and the other end of which is connected to the arc ring.

3. The pressure vessel according to claim 1, characterized in that The maximum outer diameters of the three arc-shaped rings after being extended are larger than the outer diameter of the cover plate, and the maximum inner diameters of the three arc-shaped rings after being extended are smaller than the outer diameter of the cover plate.

4. The pressure vessel according to claim 1, characterized in that The thickness of the cover plate is equal to the depth of the first mounting hole.

5. The pressure vessel according to claim 4, characterized in that It also includes an exhaust valve. The cover plate is provided with an exhaust hole along the axial direction. The exhaust valve is installed on the top of the exhaust hole.

6. The pressure vessel according to claim 5, characterized in that It also includes a lifting ring, which is installed on the top surface of the cover plate.

7. The pressure vessel according to claim 1, characterized in that Also included is a wrench, which is disposed on the three-jaw chuck and extends out of the top opening.

8. The pressure vessel according to claim 1, wherein: It also includes a sealing ring. The outer wall of the cover plate is provided with a sealing groove, and the sealing ring is arranged in the sealing groove.

9. The pressure vessel according to claim 8, characterized in that It also includes a water inlet joint and a water outlet joint. The side wall of the tank body is provided with a water inlet hole and a water outlet hole respectively connected to the top and bottom of the medium cavity hole. The water inlet joint is connected to the water inlet hole, and the water outlet joint is connected to the water outlet hole.

10. The pressure vessel according to any one of claims 1 to 9, characterized in that: The cover plate is provided with a threaded hole, and the three-jaw chuck is provided with a fixing hole; Also included is a mounting screw, which passes through the fixing hole and is connected to the threaded hole.

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