An intelligent sealing device for water jacket of gas cylinder with external method and water pressure test

Abstract

The present invention relates to the field of intelligent equipment detection technology, and in particular to an intelligent sealing device for a water jacket of a gas cylinder water pressure test using an outer method. The device is designed to match the wedge-shaped catches of the clamping ring and the water jacket cover respectively, and the wedge-shaped catches of the water jacket cover are matched up and down. The clamping ring is pushed to rotate clockwise by a pushing cylinder, and the wedge-shaped inclined surface of the clamping ring and the wedge-shaped inclined surface of the water jacket cover are gradually fitted and pressed, and the pressure is transmitted to the vacuum rubber sealing gasket, so that the sealing effect between the water jacket cover and the water jacket cylinder body is finally improved, which greatly improves the safety performance of the test process. By setting a pushing cylinder with an electromagnetic valve, a limit bracket with a stroke switch and a control center, the piston end of the pushing cylinder is fixedly connected to the side wall of the clamping ring. Under intelligent control, the piston rod of the pushing cylinder is extended to the limit and no longer pressed, thereby ensuring the accuracy of the test data. Through the setting of the intelligent device, the degree of automation is high, the manual operation and labor intensity are reduced, the operation convenience is improved, and the inspection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent equipment detection, and in particular to an intelligent sealing device for a water jacket of an outer method gas cylinder water pressure test. Background Art

[0002] At present, the water jacket used in the water pressure test of gas cylinders by the external method has been widely used in wrapped gas cylinders, steel cylinders, breathing gas cylinders, etc., which generally include a water jacket body, a water jacket cover, a sealing structure between the water jacket cover and the water jacket body, an explosion-proof port, etc.; during the test, the water jacket body is filled with water, the internal thread of the gas cylinder mouth is connected and fixed with the external thread joint at the center of the lower end of the water jacket cover, the water jacket cover and the gas cylinder are placed in the water jacket body, and strict sealing measures must be taken between the water jacket cover and the water jacket body; the gas cylinder to be tested is filled with water, and then water pressure is continuously injected into the gas cylinder through the booster device to the test pressure. The cylinder body will expand during the pressurization process of the gas cylinder. In this process, it is necessary to prevent the water in the water jacket body from overflowing from the gap between the water jacket cover and the water jacket body, so the sealing structure and form between the water jacket cover and the water jacket body are crucial, otherwise it will affect the accuracy of the test results.

[0003] There are currently two types of sealing structures in the industry:

[0004] One is to place a sealing gasket on the contact surface between the water jacket cover and the water jacket cylinder body, and use 3-6 cylinders to evenly compress the water jacket cover to achieve a sealing effect; the disadvantages are: 1) When the pressure of a certain cylinder is insufficient, the pressing force will be unevenly distributed, resulting in leakage; 2) When the gas cylinder is inspected regularly, due to the lack of understanding of the use status of the gas cylinder, there may be defects in the bottle body or the bottle mouth thread. During the pressurization process, the gas cylinder is prone to bursting and the impact force is very large. If only the cylinder is used for compression, the water jacket cover is very easy to burst, posing a major safety hazard.

[0005] Secondly, a circle of airbags is arranged between the water jacket cover and the inner wall of the water jacket, and the airbags are fixed at the lower end of the water jacket cover. After the water jacket cover is placed on the water jacket cylinder body, the airbags are inflated and expanded to play a sealing role. The disadvantages are: 1) The airbags are basically made of rubber material. After long-term use, the material is prone to aging and needs to be replaced frequently. The replacement cost is high and the replacement process is relatively complicated. 2) The connection position between the airbag and the inflation and exhaust air pipe is prone to leakage, resulting in poor sealing, which seriously affects the test results. 3) Before the airbag is inflated, it is necessary to use bolts or manual clamps to tighten the water jacket cover and the water jacket cylinder body, which requires a large amount of manual work and is inconvenient to operate. Therefore, there is an urgent need for a safe, reliable and efficient sealing device. Summary of the invention

[0006] The invention discloses an intelligent sealing device for a water jacket of a gas cylinder with an outside method and a water pressure test, aiming to solve the technical problems existing in the prior art.

[0007] The present invention adopts the following technical solutions:

[0008] An intelligent sealing device for a water jacket of a gas cylinder with an external method water pressure test, comprising a water jacket device for sealing the test gas cylinder in inner cavity water, the water jacket device comprising a water jacket unit with a cavity inside, a matching sealed water jacket cover placed on the top of the water jacket unit, a clamping device capable of gradually applying pressure to the water jacket cover, and a displacement device for driving the clamping device to move, and also comprising a control center for intelligently controlling the displacement device to perform actions.

[0009] In some embodiments, the water jacket unit includes a cylindrical flange and a water jacket cylindrical body which are fixedly connected as a whole at the top and bottom, and the whole is a cylindrical structure with a cavity inside and an opening at the top;

[0010] The top of the cylinder flange is provided with a top connection end that matches and snaps with the gap of the water jacket cover, the bottom is provided with a bottom connection end that is fixedly connected to the end of the water jacket cylinder body, and the middle outer wall is also provided with a step that matches and connects with the clamping device.

[0011] In some embodiments, the bottom connecting end and the end of the water jacket body are connected at a location with inner and outer notches, respectively, and after matching and connecting, a complete cylinder wall is formed, namely, a Z-shaped welding interface, so that the straightness of the cylinder flange and the water jacket body welded together meets the preset requirements.

[0012] In some embodiments, a plurality of evenly distributed flange claws are provided inside the side wall of the top connecting end, and a flange groove is provided between two adjacent flange claws; the water jacket cover includes a circular top wall and a plurality of evenly distributed water jacket cover wedge-shaped claws radially extending from the outer periphery of the top wall, and the water jacket cover wedge-shaped claws extend into the flange groove and match the gap of the flange groove.

[0013] In some embodiments, the water jacket cover wedge-shaped claw also protrudes from the upper surface of the top wall, and the inclined surface is located on the upper surface of the water jacket cover wedge-shaped claw, forming a small head end and a large head end of the water jacket cover wedge-shaped claw, and the length L of the inclined surface is 32 to 35 times the height E of the small head end, and all the water jacket cover wedge-shaped claws are the same in size, inclination angle and arrangement direction.

[0014] In some embodiments, a water jacket cover groove is further provided at the peripheral bottom of the top wall, in which a plurality of water jacket cover water lines are arranged in parallel; a sealing gasket groove is provided at the bottom of the flange retaining claw, and a positioning retaining wall is provided on the inner side of the sealing gasket groove; the space formed by the sealing gasket groove and the water jacket cover groove is used to place a vacuum rubber sealing gasket; a plurality of parallel flange water lines are arranged on the bottom surface of the sealing gasket groove, and the number of the flange water lines is the same as that of the water jacket cover water lines and they are arranged opposite to each other.

[0015] In some embodiments, the clamping device includes a clamping ring formed by two C-shaped semicircular sleeves fixedly connected relative to each other and a clamping ring support unit located at the bottom of the clamping ring and acting as a movable support;

[0016] The clamping ring is a cylinder containing a chamber formed by an upper annular top wall, a side wall, and a lower annular bottom wall; the cylinder flange and the water jacket cover are movably mounted in the chamber of the clamping ring, and the gap of the lower annular bottom wall surrounds the side circular wall of the terrace; the side wall and the Top connection A gap is provided on the outer cylindrical surface; a preset spacing H is provided from the upper plane of the lower annular bottom wall to the bottom plane of the top connecting end, and a spacing T is provided from the upper plane of the top connecting end to the bottom plane of the upper annular top wall of the clamping ring, and T>H, so that the clamping ring can move axially during the process of rotating axially clockwise or counterclockwise to a preset distance.

[0017] In some embodiments, the bottom of the upper annular top wall extends downward to form a plurality of evenly distributed clamping ring wedge-shaped claws, the number, size and inclination angle ∂ of the clamping ring wedge-shaped claws are the same as those of the water jacket cover wedge-shaped claws, and the value range of ∂ is 3°~5°; the clamping ring wedge-shaped claws and the water jacket cover wedge-shaped claws are arranged opposite to each other in pairs, and the small head ends are arranged adjacent to each other, but the inclination directions are opposite, and the axial spacing between the small head ends of the clamping ring wedge-shaped claws and the small head ends of the water jacket cover wedge-shaped claws is set to F, and the initial positional relationship of the clamping ring wedge-shaped claws and the water jacket cover wedge-shaped claws should satisfy: E=1.7F~2F; K>0; so that when the clamping ring rotates around the cylinder flange according to a preset direction, the two parallel inclined surfaces of the clamping ring wedge-shaped claws and the water jacket cover wedge-shaped claws are gradually fitted and pressed to a preset position from contact.

[0018] In some embodiments, the clamping ring support unit includes a support frame fixedly mounted on the water jacket body and a universal ball movably mounted on the support frame, the universal ball contacts the bottom wall of the clamping ring, and there are several clamping ring support units evenly distributed at the bottom of the clamping ring.

[0019] In some embodiments, the shifting device includes a pushing cylinder and a limiting device; the limiting device is fixedly mounted on the outer wall of the water jacket cylinder body, the piston end of the pushing cylinder is fixedly connected to the outer wall of the clamping ring of the clamping device, and the solenoid valve provided on the pushing cylinder is connected to the control center; the limiting device is provided with an adjustable contact, and the adjustable contact is provided with a travel switch, so that when the piston end reaches the travel switch sensing position, the control center controls the piston to stop moving, and at this time, the clamping force of the water jacket cover on the water jacket unit reaches a preset peak value. Beneficial Effects

[0020] The test has high safety performance. The present invention provides an intelligent sealing device for the water jacket of the water pressure test of the outer side method gas cylinder through the unique structural design of the clamping ring and the water jacket cover, that is, the wedge-shaped catch of the clamping ring and the wedge-shaped catch of the water jacket cover are designed to match each other up and down, and the pushing cylinder is used to push the clamping ring to rotate clockwise, and the wedge-shaped inclined surface of the clamping ring and the wedge-shaped inclined surface of the water jacket cover are gradually fitted and pressed, and the clamping ring presses the wedge-shaped inclined surface of the water jacket cover downward to transfer force to the vacuum rubber sealing pad, and finally the water jacket cover and the water jacket cylinder body are well sealed. The clamping sealing structure of the present invention can increase the test pressure from the existing 52.5MPa to 105MPa. Even if the test gas cylinder body ruptures unexpectedly during the test, the clamping ring tightly presses the water jacket cover and the water jacket cover will not collapse, thereby greatly improving the safety performance of the test process.

[0021] The accuracy of the test data is further improved. After the sealing structure of the present invention is compressed and sealed, the water in the water jacket body will not overflow from the water jacket cover and the compression sealing surface of the water jacket body. At the same time, the present invention is provided with intelligent control devices such as a solenoid valve, a control center and a travel switch on a limit bracket, which pushes the piston rod of the cylinder to extend to the limit and no longer continues to compress. Therefore, the test data will not fluctuate, thereby ensuring the accuracy of the test data.

[0022] The operation is more convenient and the inspection efficiency is improved. The compression and sealing process only requires the operator to touch the screen at the control center console to operate the buttons. The high degree of automation reduces manual operation, improves the convenience of operation, and reduces labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments, which constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions explain the present invention and do not constitute improper limitations on the present invention. In the drawings:

[0024] Figure 1 A schematic diagram of the technical solution structure provided by an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the structure of the technical solution when the pushing cylinder and the limiting bracket are in contact with each other provided by an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the structure of the technical solution when the push cylinder provided in the embodiment of the present invention is located in the original position and has a preset distance from the limit bracket;

[0027] Figure 4 for Figure 2 A-direction view;

[0028] Figure 5 for Figure 4 BB cross-sectional view;

[0029] Figure 6 for Figure 5 A magnified image of G;

[0030] Figure 7 for Figure 3 P-direction stereogram;

[0031] Figure 8 It is a schematic diagram of the technical solution structure of the cylinder flange;

[0032] Fig. 9 for Figure 8 NN cross-sectional view;

[0033] Fig.10 A schematic diagram of the technical solution structure for connecting the water jacket cover to the gas cylinder connecting device;

[0034] Fig.11 for Fig.10 HH cross-sectional view;

[0035] Fig.12 for Fig.10 U-direction view;

[0036] Fig.13 for Fig.12 QQ section view;

[0037] Fig.14 A schematic diagram of the technical solution structure for matching and connecting the cylinder flange and the water jacket cover;

[0038] Fig.15 It is a schematic diagram of the technical solution structure of the clamping ring;

[0039] Fig.16 for Fig.15 DD cross-sectional view;

[0040] Fig.17 It is a schematic diagram of the technical solution structure of the universal ball unit;

[0041] Fig.18 Wedge-shaped retaining claw for clamping ring and Schematic diagram of the technical solution structure of the initial state of the water jacket cover wedge-shaped catch before contact;

[0042] Fig.19 Wedge-shaped retaining claw for clamping ring and Schematic diagram of the technical solution structure of the maximum fitting and pressing state of the two inclined surfaces of the wedge-shaped retaining claws of the water jacket cover.

[0043] In the figure:

[0044] Protective cover unit 1; protective cover 11; mounting plate 12; water jacket device 2; vacuum rubber sealing pad 21; water jacket cylinder 221; chamber 2211; cylinder flange 222; top connection end 2221; step 2222; bottom connection end 2223; flange waterline 2224; flange stopper 2225; flange groove 2226; positioning stopper wall 2227; sealing pad groove 2228; center through hole 2229 ; Drain port 223; Overflow port 224; Water jacket water supply port 225; Z-shaped welding interface 226; Explosion-proof port 227; Water jacket cover 23; Water jacket cover wedge-shaped catch 231; Water jacket cover wedge-shaped inclined surface 2311; Water jacket cover catch small end 2312; Water jacket cover waterline 232; Water jacket cover top wall plane 233; Water jacket cover groove 234; Clamping device 3; Clamping ring 31; Clamping ring wedge-shaped catch 311; Clamping ring Wedge-shaped inclined surface 3111; small end 3112 of clamping ring retaining claw; connecting arc plate 313; inner through hole 314; clamping ring groove 315; upper annular top wall 316; lower annular bottom wall 317; clamping ring support unit 32; support frame 321; through hole 3211; universal ball unit 322; hemispherical body 3221; strap 3222; cylinder 3223; mounting bracket 323; shifting device 4; pushing cylinder 41; piston 411; pushing bracket 412; pin 413; touch surface 414; arc plate 415; solenoid valve 416; cylinder hose 417; limit bracket 42; adjustable contact 421; travel switch 422; fastener 5; gas cylinder device 6; gas cylinder connecting device 61; air inlet joint 611; gas cylinder connecting joint 612; air inlet channel 613; test gas cylinder 62; water 7; control center 8. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in combination with the specific embodiments of the present invention and the corresponding drawings; in the description of the present invention, it should be noted that the "including" mentioned in the specification and claims is an open term, so it should be interpreted as "including but not limited to"; "several" refers to no less than 4.

[0046] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0047] Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0048] like Figure 1-Figure 19 As shown, the technical solution disclosed in the present invention is:

[0049] An intelligent sealing device for a water jacket of a gas cylinder with an external method water pressure test, comprising a water jacket device 2 for sealing a test gas cylinder 62 in water 7 in an inner cavity, the water jacket device 2 comprising a water jacket unit with a chamber 2211 inside, a matching and sealed water jacket cover 23 placed on the top of the water jacket unit, a clamping device 3 comprising a clamping ring 31 and a clamping ring support unit 32 capable of gradually applying pressure to the water jacket cover 23, and a displacement device 4 for driving the clamping ring 31 to move, a protective cover unit 1 is externally mounted on the upper portion of the device, and the device also comprises a control center 8 for intelligently controlling the displacement device 4 to perform actions.

[0050] like Figure 1-Figure 19 As shown, a preferred embodiment of the present invention:

[0051] An intelligent sealing device for a water jacket of a gas cylinder water pressure test using an outside method comprises a protective cover unit 1, a water jacket device 2, a pressing device 3, a shifting device 4, a gas cylinder device 6, and a control center 8.

[0052] The intelligent sealing device includes a water jacket device 2 for sealing the test gas cylinder 62 in the water 7 in the inner cavity, wherein the water jacket device 2 includes a water jacket unit located at the lower end and a barrel flange 222 fixedly connected to the upper end to form a chamber 2211 containing water 7 and having an upper end open; it also includes a water jacket cover 23 located at the upper end of the water jacket unit and matched with the barrel flange 222, and a vacuum rubber sealing gasket 21 is installed between the water jacket cover 23 and the barrel flange 222; the clamping device 3 includes a clamping ring 31 and a clamping ring supporting unit 32, and the clamping ring 31 is movably sleeved on the barrel flange 222 and the water jacket cover 23, and corresponds to the water jacket cover 23. The clamping ring support unit 32 is fixedly mounted on the outer wall of the water jacket unit, and a universal ball unit 322 is movably supported on the bottom wall of the clamping ring 31; the cylinder end of the pushing cylinder 41 provided in the shifting device 4 is fixedly connected to the side wall of the clamping ring 31, and a limiting bracket 42 is fixedly mounted on the wall of the water jacket unit, the pushing cylinder 41 is provided with a solenoid valve 416, and the limiting bracket 42 is provided with a travel switch 422, the travel switch 422 is connected to the solenoid valve 416, and the solenoid valve 416 is connected to the control center 8, and the solenoid valve 416 controls the extension and retraction of the cylinder of the pushing cylinder 41; a protective cover unit 1 is provided on the outer sleeve of the device.

[0053] The protective cover unit 1 includes a protective cover 11 and a mounting plate 12. The mounting plate 12 is mounted on the outer wall of the water jacket unit 2 through fasteners, and is located on the overflow port 224 and the water jacket water replenishment port 225. The protective cover 11 is located on the mounting plate 12. Figure 1 shown.

[0054] In this embodiment, the water jacket unit 2 includes a cylinder flange 222 and a water jacket cylinder body 221 which are fixedly connected as a whole by welding. The whole is a cylindrical structure with a chamber 2211 inside and an open upper end.

[0055] The top of the cylinder flange 222 is provided with a top connecting end 2221 that matches and snaps with the gap of the water jacket cover 23, and the bottom is provided with a bottom connecting end 2223 that is fixedly connected to the upper end of the water jacket cylinder body 221. The middle outer wall is also provided with a step 2222 that matches and connects with the clamping ring 31, and the middle is a central through hole 2229; wherein, the bottom connecting end 2223 and the upper end of the water jacket cylinder body 221 are respectively provided with inner and outer notches at the connection, and a complete cylinder wall is formed after matching and connecting, that is, a Z-shaped welding interface 226, which is formed by double-sided welding. This method ensures the accuracy of positioning during assembly welding, is not easy to be welded off-center, and ensures that the straightness of the cylinder flange 222 and the water jacket cylinder body 221 after assembly welding meets the preset requirements, such as Figure 6 shown.

[0056] The chamber 2211 of the water jacket unit 2 is filled with water 7 , and a test gas cylinder 62 is placed in the water 7 .

[0057] An overflow port 224 and a water jacket water replenishment port 225 are respectively provided on the outer wall of the top of the water jacket unit, which are flush with the top of the chamber 2211 to control the water jacket unit to be always full of water. A drain port 223 is provided at the bottom of the water jacket unit, and an explosion-proof port 227 is also provided in the middle of the water jacket unit. When the pressure in the water jacket unit increases, the pressure is released from this port to play a safety protection role. When the test gas cylinder 62 is subjected to a water pressure test, the test gas cylinder 62 is filled with water, and then water pressure is continuously pumped into the test gas cylinder 62 to the test pressure through an external pressurizing device (not shown in the figure). The body of the test gas cylinder 62 will expand during the pressurizing process. Since the chamber 2211 of the water jacket unit 2 is full of water, the expansion of the test gas cylinder 62 will cause the water 7 in the chamber 2211 to overflow to the control console through the overflow port 224 (not shown in the figure). When the pressure of the test gas cylinder 62 is released, the expansion of the bottle body is recovered, and the discharged water will return to a part of the chamber 2211 through this port. The remaining water that has not returned to the chamber 2211 is used to calculate the elastic deformation value and residual deformation rate of the test gas cylinder 62 through the mass of the load-bearing water.

[0058] When the chamber 2211 is not full of water, water is replenished through the water jacket water replenishment port 225.

[0059] The drain port 223 is used to drain the water 7 in the chamber 2211. Figure 1 shown.

[0060] The inner side of the peripheral wall of the top connecting end 2221 of the cylinder flange 222 is provided with a plurality of identical flange retaining claws 2225 that are evenly distributed and protrude toward the center of the circle, and a flange groove 2226 is provided between two adjacent flange retaining claws 2225. Figure 8 In this example, the number of the flange claws 2225 is selected as 8, which can be set to an even number according to needs.

[0061] A sealing gasket groove 2228 is provided at the bottom of the flange claw 2225, and a positioning retaining wall 2227 is provided on the inner side of the sealing gasket groove 2228 to prevent the vacuum rubber sealing gasket 21 from being misplaced. The space formed by the sealing gasket groove 2228 and the water jacket cover groove 234 is used to place the vacuum rubber sealing gasket 21, and a plurality of parallel flange waterlines 2224 are provided on the bottom surface of the sealing gasket groove 2228.

[0062] The water jacket cover 23 includes a circular top wall and a plurality of uniformly distributed water jacket cover wedge-shaped catches 231 formed by radially extending from the outer periphery of the top wall. The circular top wall is provided with the water jacket cover top wall plane 233. The water jacket cover 23 is placed on the upper end surface of the cylinder flange 222, and a vacuum rubber sealing gasket 21 is placed between the cylinder flange 222. This contact surface is the sealing surface between the water jacket cover 23 and the cylinder flange. The outwardly extended water jacket cover wedge-shaped catches 231 extend into the flange groove 2226 and are clearance-matched with the flange groove 2226, so as to facilitate the placement and removal of the water jacket cover 23, and the number is the same, such as Figure 10 to Figure 13 .

[0063] like Fig.14 As shown, the eight protruding wedge-shaped catches 231 of the water jacket cover 23 just block the eight flange catches 2225 of the cylinder flange 222, so that the water jacket cover 23 will not rotate freely, thereby ensuring the stability of the water jacket cover 23.

[0064] The water jacket cover wedge-shaped claw 231 also protrudes from the water jacket cover top wall plane 233, and the water jacket cover wedge-shaped inclined surface 2311 is located on the upper surface of the water jacket cover wedge-shaped claw 231, forming a small head end 2312 and a large head end of the claw, and the length L of the inclined surface is 32 to 35 times the height E of the small head end, and all the water jacket cover wedge-shaped claws 231 are the same in size, inclination angle and arrangement direction.

[0065] In this embodiment, a water jacket cover groove 234 is further provided at the peripheral bottom of the water jacket cover top wall plane 233, and a plurality of water jacket cover water lines 232 are arranged in parallel in the water jacket cover groove 234; when the water jacket cover 23 is placed on the cylinder flange 222 for matching installation, the water jacket cover water lines 232 and the flange water lines 2224 are the same in number and are placed opposite to each other, so as to further prevent water leakage.

[0066] The gas cylinder device 6 includes a gas cylinder connecting device 61 and a test gas cylinder 62; the gas cylinder connecting device 61 is sealed and installed at the center of the top wall of the water jacket cover, the air inlet joint 611 is located outside the water jacket cover 23, and is connected to an external pressurizing device (not shown in the figure), the external threaded portion of the gas cylinder connecting joint 612 is fixedly connected to the internal thread of the test gas cylinder 62, and high-pressure water enters the chamber 2211 of the water jacket body 221 through the air inlet channel 613, and the water jacket cover 23 together with the test gas cylinder 62 filled with water are placed in the water 7 in the chamber 2211 of the water jacket body 221, as shown in FIG. Figure 5 shown.

[0067] In this embodiment, the clamping device 3 includes a clamping ring 31 formed by two C-shaped semicircular clamping rings fixedly connected relative to each other and a clamping ring support unit 32 located at the bottom of the clamping ring 31 and acting as a movable support. Figure 4 , Figure 7 As shown, two C-shaped semicircular clamping rings are connected by connecting arc plates 313 and a plurality of fasteners 5 to form a complete structure.

[0068] The compression ring 31 is one of the pipe fitting components for compressing and sealing the water jacket cover 23 and the water jacket unit.

[0069] The clamping ring 31 is a cylinder containing a chamber, which is surrounded by an upper annular top wall 316, side walls, and a lower annular bottom wall 317, and an inner through hole 314 is provided in the middle. The bottom of the upper annular top wall 316 extends downward to form a plurality of evenly distributed clamping ring wedge-shaped claws 311, and adjacent to the clamping ring wedge-shaped claws 311 are clamping ring grooves 315.

[0070] The cylinder flange 222 and the water jacket cover 23 are sleeved in the clamping ring 31; the lower annular bottom wall 317 is mounted outside the side circular wall of the step 2222, and after assembly, a preset spacing H is provided between the upper plane of the lower annular bottom wall 317 and the bottom plane of the top connecting end 2221, and a spacing T is provided between the upper plane of the top connecting end 2221 and the bottom plane of the upper annular top wall 316 of the clamping ring 31, and T>H. When the clamping ring 31 gradually applies pressure to the water jacket cover 23, as the wedge-shaped retaining claws 311 of the clamping ring contact with the water jacket cover 23, The contact surface of the wedge-shaped catch 231 of the sleeve cover gradually increases. Under the reaction force, the clamping ring 31 will gradually rise. Therefore, a preset space should be reserved, that is, the clamping ring 31 can move axially during the process of rotating clockwise along the axial direction to a preset distance, so that the clamping ring 31 can apply sufficient pressure to the water jacket cover 23 without hindrance; a gap S is provided between the outer surface of the cylindrical wall of the top connecting end 2221 of the cylinder flange 222 and the inner surface of the clamping ring 31, so that the clamping ring 31 can rotate freely when rotating clockwise along the axial direction, such as Figure 6 shown.

[0071] In some embodiments, the number, size and inclination angle ∂ of the clamping ring wedge-shaped claws 311 are the same as those of the water jacket cover wedge-shaped claws 231, and the value range of ∂ is 3° to 5°, with the optimal value being 3.5°.

[0072] The clamping ring wedge-shaped catch 311 and the water jacket cover wedge-shaped catch 231 are arranged opposite to each other, but are arranged in opposite inclination directions, that is, the small head end 3112 of the clamping ring wedge-shaped catch 311 is adjacent to the small head end 2312 of the water jacket cover wedge-shaped catch 231, and the axial spacing between the small head end 3112 and the small head end 2312 is set to F. The initial positional relationship between the clamping ring wedge-shaped catch 311 and the water jacket cover wedge-shaped catch 231 should satisfy: E=1.7F~2F; K>0, such as Fig.18 As shown;

[0073] The clamping ring catch small end 3112 and the water jacket cover catch small end 2312 are adjacently arranged according to the above-mentioned preset distance, and are in the initial state. Figure 3 , Fig.18 As shown, when the cylinder is extended, the clamping ring 31 rotates clockwise to gradually compress the water jacket cover 23 and the water jacket cylinder body 221, that is, the clamping ring wedge-shaped inclined surface 3111 of the clamping ring wedge-shaped catch 311 and the water jacket cover wedge-shaped inclined surface 2311 of the water jacket cover wedge-shaped catch 231 are gradually in contact with each other and pressed to a preset position, as shown in FIG. Figure 2 , Fig.19 As shown, the clamping force at this time reaches the preset value; when the cylinder retracts, the clamping ring 31 rotates counterclockwise to loosen the water jacket cover 23 and the water jacket body 221.

[0074] It should be noted that the clamping ring 31 can rotate clockwise or counterclockwise along the axis of the push cylinder 41 .

[0075] In some embodiments, the clamping ring support unit 32 includes a support frame 321 fixedly mounted on the water jacket body 221, a through hole 3211 is provided on the horizontal frame of the support frame 321, and the universal ball unit 322 is movably placed on the support frame 321, and the gap with the through hole 3211 is matched; the support frame 321 is set as a right-angle structure, and the vertical wall is mounted on the mounting bracket 323 through the fastener 5, and the mounting bracket 323 is fixed on the cylinder wall of the water jacket unit; see Figure 5-Figure 6 shown.

[0076] The universal ball unit 322 includes a hemispherical body 3221 in contact with the bottom plane of the lower annular bottom wall 317, a strap 3222 placed on the horizontal frame of the support frame 321 below the hemispherical body 3221, and a cylinder 3223 below. The cylinder 3223 can rotate in the through hole 3211. Fig.17 .

[0077] The clamping ring support units 32 are provided in a plurality and are evenly distributed at the bottom of the clamping ring 31. In this example, eight universal ball units 322 are evenly supported at the bottom of the clamping ring 31, so that the clamping ring 31 can rotate clockwise or counterclockwise around the axis.

[0078] In some embodiments, the displacement device 4 includes a pushing cylinder 41 and a limiting bracket 42; the limiting bracket 42 is fixedly mounted on the outer wall of the water jacket body 221 through a fastener 5, the main part of the pushing cylinder 41 is fixedly mounted on the outer wall of the water jacket body 221 through a support frame, the piston end of the pushing cylinder 41 is fixedly connected to the outer wall of the clamping ring 31 through a pushing bracket 412 and an arc panel 415, and the pushing cylinder 41 is provided with an electromagnetic valve 416, and the electromagnetic valve 416 is connected to the control The control center 8 is connected; a cylinder hose 417 is connected to the solenoid valve 416 and the cylinder, and is divided into an intake hose and an exhaust hose. Under the control of the control center 8, the solenoid valve 416 controls the extension and retraction of the cylinder; the end of the cylinder is movably connected to the pushing bracket 412 through a pin shaft 413, and a touch surface 414 is provided on the front end face of the pushing bracket 412, and the arc panel 415 is in contact with the outer wall of the clamping ring 31, and the pushing bracket 412 is fixed to the outer wall of the clamping ring 31 by the fastener 5.

[0079] The limit bracket 42 is provided with an adjustable contact 421. In this example, a screw with adjustable length is selected. A travel switch 422 is provided at the end of the adjustable contact 421. Under the control of the control center 8, the solenoid valve 416 controls the extension of the cylinder, and the pushing bracket 412 drives the clamping ring 31 to rotate, that is, the wedge-shaped inclined surface 3111 of the clamping ring and the wedge-shaped inclined surface 2311 of the water jacket cover are gradually contacted, fitted and pressed. When the touch surface 414 approaches the end of the adjustable contact 421, the travel switch 422 obtains the distance information, and the travel switch 422 sends a signal to the solenoid valve 416, and the solenoid valve 416 transmits the information to the control center 8. Under the control of the control center 8, the solenoid valve 416 is powered off to stop the movement of the cylinder. At this time, the pressing force of the water jacket cover 23 on the water jacket unit reaches a preset peak value, and the position of the adjustable contact 421 is the optimal position.

[0080] In this example: the air intake hose is set to provide 0.6-0.8MPa driving air into the cylinder, the cylinder piston 411 extends, pushing the clamping ring 31 to rotate clockwise until the clamping ring wedge slope 3111 of the clamping ring 31 is pressed tightly against the wedge slope 2311 of the water jacket cover, and the contact surface 414 stops moving when it reaches the specified limit position. At this time, the clamping state is as follows: Figure 5 and Fig.19 As shown. The clamping ring 31 presses the wedge-shaped slope 2311 of the water jacket cover 23 downward, thereby transmitting the force to the vacuum rubber seal 21, and finally the water jacket cover 23 and the water jacket cylinder 221 are sealed. At the same time, even if the bottle body breaks during the test, the water jacket cover 23 will not collapse because the clamping ring 31 tightly presses the water jacket cover 23. The clamping sealing structure of the present invention can increase the test pressure from the existing 52.5MPa to 105MPa, greatly improving the safety performance of the test process; Figure 2 , Figure 4 shown.

[0081] When the test is completed, the control center 8 controls the cylinder to exhaust, the cylinder piston rod retracts, and at the same time drives the clamping ring 31 to rotate counterclockwise, the clamping ring 31 and the wedge-shaped end surface of the water jacket cover 23 are separated, thereby loosening the clamping. When the cylinder rod is fully retracted, the eight clamping ring grooves 315 of the clamping ring 31 are aligned with the wedge-shaped stop claws 231 of the water jacket cover 23, so that the water jacket cover 23 can be removed. Figure 3 , Figure 7 shown.

[0082] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. An intelligent sealing device for a water jacket of a gas cylinder under hydrostatic test using an external method, comprising a water jacket device for sealing the test gas cylinder in water in an inner cavity, characterized in that: The water jacket device includes a water jacket unit with a cavity inside, a water jacket cover placed on the top of the water jacket unit to match the seal, a clamping device that can gradually apply pressure to the water jacket cover, and a displacement device that drives the clamping device to move, and also includes a control center that intelligently controls the displacement device to perform actions; wherein, The water jacket unit comprises a cylindrical flange and a water jacket cylinder body which are fixedly connected as one body from top to bottom, and the whole is a cylindrical structure with a cavity inside and an upper opening; a plurality of flange stoppers arranged in the side wall of the top connection end of the top end of the cylindrical flange are matched and buckled with a plurality of water jacket cover wedge-shaped stoppers arranged in the outer periphery of the top wall of the water jacket cover; a bottom connection end fixedly connected to the end of the water jacket cylinder body is arranged at the bottom of the cylindrical flange, and a step platform matched and connected to the clamping device is also arranged on the middle outer wall; The wedge-shaped claw of the water jacket cover also protrudes from the upper surface of the top wall of the water jacket cover, and the inclined surface is located on the upper surface of the wedge-shaped claw of the water jacket cover, forming the small head end and the large head end of the wedge-shaped claw of the water jacket cover; the clamping ring provided in the clamping device is a cylinder containing a chamber formed by an upper annular top wall, a side wall, and a lower annular bottom wall; the bottom of the upper annular top wall extends downward to form a plurality of uniformly distributed clamping ring wedge-shaped claws, which are the same size as the wedge-shaped claws of the water jacket cover located below and are arranged opposite to each other in pairs; the number, size and inclination angle ∂ of the wedge-shaped claws of the clamping ring are the same as those of the wedge-shaped claws of the water jacket cover, but the inclination angle direction is opposite; The peripheral bottom of the water jacket cover top wall plane is also provided with a water jacket cover groove with a plurality of water jacket cover water lines arranged in parallel; the bottom of the flange retaining claw is provided with a sealing gasket groove, the inner side of the sealing gasket groove is provided with a positioning retaining wall, the space formed by the sealing gasket groove and the water jacket cover groove is used to place a vacuum rubber sealing gasket, the bottom surface of the sealing gasket groove is provided with a plurality of parallel flange water lines, and the number of the flange water lines and the water jacket cover water lines is the same and they are arranged oppositely; The clamping device includes a clamping ring formed by two C-shaped semicircular sleeves fixedly connected relative to each other and a clamping ring support unit located at the bottom of the clamping ring and acting as a movable support; the cylinder flange and the water jacket cover are movably mounted in the chamber of the clamping ring, and the lower annular bottom wall gap surrounds the side circular wall of the step; a gap is provided between the side wall and the outer cylindrical surface of the top connecting end; a preset spacing H is provided from the upper plane of the lower annular bottom wall to the bottom plane of the top connecting end, and a spacing T is provided from the upper plane of the top connecting end to the bottom plane of the upper annular top wall of the clamping ring, and T>H, so that the clamping ring can move axially during the process of rotating axially clockwise or counterclockwise to a preset distance.

2. The water jacket intelligent sealing device for the hydrostatic test of an outer side gas cylinder according to claim 1 is characterized in that: The bottom connecting end and the end of the water jacket body are connected at a point where inner and outer notches are provided, and after matching and connection, a complete cylinder wall is formed, namely a Z-shaped welding interface, so that the straightness of the cylinder flange and the water jacket body welded together meets the preset requirements.

3. The water jacket intelligent sealing device for the hydrostatic test of an outer side gas cylinder according to claim 1 is characterized in that: The length L of the inclined surface is 32 to 35 times the height E of the small end, and the size, inclination angle and arrangement direction of all the wedge-shaped claws of the water jacket cover are the same.

4. The water jacket intelligent sealing device for the hydrostatic test of an outer side gas cylinder according to claim 3 is characterized in that: The value range of ∂ is 3°~5°; the small end ends of the clamping ring wedge-shaped claw and the water jacket cover wedge-shaped claw are adjacent to each other, and the minimum spacing between the small end ends of the clamping ring wedge-shaped claw and the water jacket cover wedge-shaped claw is set to F, and the initial positional relationship between the clamping ring wedge-shaped claw and the water jacket cover wedge-shaped claw should satisfy: E=1.7F~2F; so that when the clamping ring rotates around the cylinder flange according to a preset direction, the two parallel inclined surfaces of the clamping ring wedge-shaped claw and the water jacket cover wedge-shaped claw are gradually fitted and pressed to a preset position from contact.

5. The water jacket intelligent sealing device for the hydrostatic test of an outer side gas cylinder according to claim 3 is characterized by: The clamping ring support unit includes a support frame fixedly mounted on the water jacket body and a universal ball movably mounted on the support frame. The universal ball contacts the bottom wall of the clamping ring. The clamping ring support unit is provided with a plurality of support units evenly distributed on the bottom of the clamping ring.

6. The water jacket intelligent sealing device for the hydrostatic test of an outer side gas cylinder according to claim 1 is characterized in that: The shifting device includes a pushing cylinder and a limiting device; the limiting device is fixedly mounted on the outer wall of the water jacket body, the piston end of the pushing cylinder is fixedly connected to the outer wall of the clamping ring of the clamping device, and the solenoid valve provided on the pushing cylinder is connected to the control center; the limiting device is provided with an adjustable contact, and the adjustable contact is provided with a travel switch, so that when the piston end reaches the travel switch sensing position, the control center controls the piston to stop moving, and at this time, the clamping force of the water jacket cover on the water jacket unit reaches a preset peak value.

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