Miniature ultrahigh-pressure built-in safety valve

Abstract

The utility model discloses a miniature ultrahigh-pressure built-in safety valve, which belongs to the technical field of safety valves and comprises a high-pressure tank body and a safety valve main body detachably embedded and fixed at the top end of the high-pressure tank body, a connecting part is fixed at the top end of the high-pressure tank body, and the safety valve main body is inserted in the connecting part in a matched manner. An air inlet is formed in the bottom end of the safety valve body, positioning grooves are symmetrically formed in the top end of the side wall of the safety valve body, a telescopic groove is formed in the inner wall of the connecting part, positioning blocks inserted into the positioning grooves in a matched mode are elastically arranged in the telescopic groove, and a pull rod driving the positioning blocks to contract is arranged on the outer wall of the connecting part. The safety valve body and the connecting part are axially fixed, a plurality of exhaust holes are formed in the top end of the safety valve body in an annular array, the miniature ultrahigh-pressure built-in safety valve is convenient to disassemble and replace, and the maintenance convenience of the safety valve is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of safety valves, and in particular relates to a miniature ultra-high pressure built-in safety valve. Background Art

[0002] A safety valve is a special device used for overpressure protection of a pressure system. It is a safety protection valve. Its opening and closing parts are normally closed under the action of external forces. When the medium pressure in the equipment or pipeline increases and exceeds the specified value, the opening and closing parts automatically open to discharge the medium outside the system to prevent the medium pressure in the system from exceeding the predetermined safety value. After the pressure returns to normal, the opening and closing parts automatically close to prevent the internal medium from continuing to flow out. Existing safety valves are often used in boilers, pressure vessels and pipelines to control the pressure not to exceed the specified value, thereby protecting the safety of workers and equipment operation.

[0003] The patent with application number 202321107327.X discloses a safety valve, including a connecting pipe, a valve body is provided at the upper end of the connecting pipe, the valve body and the connecting pipe cooperate with each other, an upper flange is provided on the valve body, a lower flange cooperating with the upper flange is provided on the connecting pipe, the upper flange and the lower flange are connected by bolts, a connecting block is fixedly connected to the outer end of the upper flange, a connecting frame cooperating with the connecting block is provided on the lower flange, a fixing pin cooperating with the connecting frame is provided on the connecting block, an adjusting nut is provided at the upper end of the valve body, a valve cap is provided above the valve body, and a threaded wall cooperating with the valve cap is provided on the valve body.

[0004] The above technical solution utilizes the cooperation between the valve body and the connecting pipe, the equipment connection structure is stable, the sealing structure is protected, and the stability of long-term use is ensured. Under long-term use, the internal spring will be affected by stress and its elasticity will be weakened. Therefore, the safety valve needs to be replaced regularly. However, the safety valve of the above structure is in a fixed connection state, which makes it difficult to disassemble the safety valve, affecting the maintenance and replacement of the safety valve. Utility Model Content

[0005] (1) Technical issues to be solved

[0006] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a miniature ultra-high pressure built-in safety valve, which is intended to solve the technical problem that the safety valve is in a fixed connection state under the prior art, which makes the safety valve difficult to disassemble and affects the daily maintenance of the safety valve.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a miniature ultra-high pressure built-in safety valve, which includes a high-pressure tank body and a safety valve body that is detachably embedded and fixed at the top of the high-pressure tank body, a connecting part is fixed at the top of the high-pressure tank body, the safety valve body is fitted and inserted in the connecting part, and an air inlet hole is provided at the bottom end of the safety valve body, positioning grooves are symmetrically provided at the top of the side wall of the safety valve body, a telescopic groove is provided on the inner wall of the connecting part, a positioning block that is fitted and inserted in the positioning groove is elastically arranged in the telescopic groove, and a pull rod that drives the positioning block to contract is provided on the outer wall of the connecting part.

[0009] When using the micro ultra-high pressure built-in safety valve of the present technical solution, a connecting part for fixing the safety valve body is provided on the high-pressure tank body. When the safety valve body is replaced, the pull rod drives the positioning block to be moved out of the positioning groove from the side wall of the connecting part, and after being moved out, the safety valve body is pulled out and disassembled from the top of the high-pressure tank body, and the safety valve body is inserted into the connecting part after replacement and installation. The second spring in the telescopic groove pushes the positioning block to be inserted into the positioning groove to keep the safety valve body fixed, which is convenient for disassembly and replacement of the safety valve and improves the convenience of maintenance of the safety valve; a lifting plate is provided at the top of the safety valve body, when the elastic force of the first spring is attenuated due to stress, the bolt is rotated to drive the lifting plate to move downward, thereby squeezing the first spring to increase its elastic force, which is convenient for adjusting the elastic force of the spring in the safety valve body, and then adjusting the pressure relief pressure of the safety valve, thereby improving the service life of the safety valve.

[0010] Preferably, the safety valve body is axially fixed to the connecting portion, and a plurality of exhaust holes are provided at the top of the safety valve body in an annular array.

[0011] Furthermore, a first spring is embedded in the safety valve body, and a sealing block for sealing the air inlet hole is elastically provided at the bottom end of the safety valve body.

[0012] Furthermore, a lifting plate abutting against the first spring is arranged at the top end of the safety valve body, and a groove for accommodating the first spring is provided on a side surface of the lifting plate facing the sealing block.

[0013] Furthermore, both sides of the inner wall of the safety valve body are provided with card slots, and both ends of the lifting plate and the sealing block are protrudingly provided with positioning parts that fit in and are inserted into the card slots.

[0014] Furthermore, a bolt is threadedly inserted into the top end of the safety valve body, and the bottom end of the bolt is rotatably clamped in the lifting plate.

[0015] Furthermore, a second spring is embedded in the telescopic groove, and the pull rod passes through the second spring and is fixedly connected to the positioning block.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model provides a connection part for fixing the safety valve body on the high-pressure tank body. When the safety valve body is replaced, the pull rod drives the positioning block to move out of the positioning groove from the side wall of the connection part, and after the removal, the safety valve body is pulled out and disassembled from the top of the high-pressure tank body. After replacement and installation, the safety valve body is inserted into the connection part, and the second spring in the telescopic groove pushes the positioning block to be inserted into the positioning groove to keep the safety valve body fixed, which is convenient for disassembly and replacement of the safety valve, and improves the convenience of safety valve maintenance.

[0019] By arranging a lifting plate at the top of the safety valve body, when the elastic force of the first spring is attenuated due to stress, the bolt is rotated to drive the lifting plate to move downward, thereby squeezing the first spring to increase its elastic force, making it easy to adjust the elastic force of the spring in the safety valve body, and then adjust the pressure relief pressure of the safety valve, thereby increasing the service life of the safety valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the high-pressure tank of the utility model;

[0023] Figure 3 For the utility model Figure 2 A schematic diagram of the structure enlargement in the middle;

[0024] Figure 4 For the utility model Figure 2 Enlarged schematic diagram of the structure at point B in the middle.

[0025] The markings in the accompanying drawings are: 1. high-pressure tank body; 2. connecting part; 3. safety valve body; 4. slot; 5. positioning part; 6. first spring; 7. groove; 8. sealing block; 9. air inlet; 10. bolt; 11. lifting plate; 12. positioning groove; 13. positioning block; 14. telescopic groove; 15. second spring; 16. pull rod; 17. exhaust hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] This specific implementation is a miniature ultra-high pressure built-in safety valve, and its structural schematic diagram is as follows Figure 1 and Figure 2 As shown, the miniature ultra-high pressure built-in safety valve comprises a high-pressure tank body 1 and a safety valve body 3 which is detachably embedded and fixed at the top of the high-pressure tank body 1. A connecting portion 2 is fixed at the top of the high-pressure tank body 1. The safety valve body 3 is inserted in the connecting portion 2. An air inlet 9 is provided at the bottom of the safety valve body 3. Positioning grooves 12 are symmetrically provided at the top of the side wall of the safety valve body 3. A telescopic groove 14 is provided on the inner wall of the connecting portion 2. A positioning block 13 which is inserted in the positioning groove 12 is elastically provided in the telescopic groove 14. The connecting portion 2 is provided with a pull rod 16 for driving the positioning block 13 to retract, and the pull rod 16 drives the positioning block 13 to move out of the positioning groove 12 from the side wall of the connecting part 2, and after the removal, the safety valve body 3 is pulled out from the top of the high-pressure tank body 1 for disassembly, and the safety valve body 3 is inserted into the connecting part 2 after replacement and installation, and the second spring 15 in the telescopic groove 14 pushes the positioning block 13 to fit and plug in the positioning groove 12 to keep the safety valve body 3 fixed, which is convenient for disassembly and replacement of the safety valve, and improves the convenience of safety valve maintenance.

[0028] The safety valve body 3 is axially fixed to the connecting part 2, and a plurality of exhaust holes 17 are provided in a ring array at the top of the safety valve body 3, a first spring 6 is embedded in the safety valve body 3, and a sealing block 8 for sealing the air inlet hole 9 is elastically provided at the bottom of the safety valve body 3.

[0029] A lifting plate 11 abutting against the first spring 6 is provided at the top of the safety valve body 3, and a groove 7 for accommodating the first spring 6 is provided on the side facing the lifting plate 11 and the sealing block 8. A card slot 4 is provided on both sides of the inner wall of the safety valve body 3, and both ends of the lifting plate 11 and the sealing block 8 are protruding with a positioning portion 5 that fits in the card slot 4. A bolt 10 is threadedly inserted at the top of the safety valve body 3, and the bottom end of the bolt 10 is rotatably engaged in the lifting plate 11. Rotating the bolt 10 drives the lifting plate 11 to move downward, thereby squeezing the first spring 6 to increase its elastic force. A second spring 15 is embedded in the telescopic groove 14, and the pull rod 16 passes through the second spring 15 and is fixedly connected to the positioning block 13.

[0030] The cross-sectional structure diagram of the high-pressure tank 1 of the miniature ultra-high pressure built-in safety valve is as follows Figure 2 As shown, its Figure 2 The enlarged schematic diagram of the structure at A is as follows Figure 3 As shown, its Figure 2 The enlarged schematic diagram of the structure at B is as follows Figure 4 shown.

[0031] Working principle: When the micro ultra-high pressure built-in safety valve of the present technical solution is used, when the pressure in the high pressure tank body 1 increases, the air pressure pushes the sealing block 8 to move upward and squeezes the first spring 6, and the air flows upward along the gap between the sealing block 8 and the safety valve body 3, and is discharged from the exhaust hole 17 to complete the pressure relief. When the safety valve body 3 is replaced, the pull rod 16 drives the positioning block 13 to be moved out of the positioning groove 12 from the side wall of the connecting part 2, and after the removal, the safety valve body 3 is pulled out from the top of the high pressure tank body 1 for disassembly, and the safety valve body 3 is inserted into the connecting part 2 after replacement and installation. The second spring 15 in the telescopic groove 14 pushes the positioning block 13 to fit in the positioning groove 12 to keep the safety valve body 3 fixed, which is convenient for disassembly and replacement of the safety valve, and improves the convenience of safety valve maintenance; by arranging a lifting plate 11 at the top of the safety valve body 3, when the elastic force of the first spring 6 is attenuated due to stress, the rotating bolt 10 drives the lifting plate 11 to move downward, thereby squeezing the first spring 6 to increase its elastic force, which is convenient for adjusting the elastic force of the spring in the safety valve body 3, and then adjusting the pressure relief pressure of the safety valve, thereby improving the service life of the safety valve.

[0032] All technical features in this embodiment can be freely combined according to actual needs.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A miniature ultra-high pressure built-in safety valve, comprising a high-pressure tank body (1) and a safety valve body (3) detachably embedded and fixed on the top of the high-pressure tank body (1), characterized in that: A connecting part (2) is fixed to the top of the high-pressure tank body (1), the safety valve body (3) is inserted in the connecting part (2), and an air inlet (9) is provided at the bottom of the safety valve body (3), and positioning grooves (12) are symmetrically provided at the top of the side wall of the safety valve body (3), and a telescopic groove (14) is provided on the inner wall of the connecting part (2), and a positioning block (13) which is inserted in the positioning groove (12) is elastically provided in the telescopic groove (14), wherein a pull rod (16) for driving the positioning block (13) to retract is provided on the outer wall of the connecting part (2).

2. A miniature ultra-high pressure built-in safety valve according to claim 1, characterized in that: The safety valve body (3) is axially fixed to the connecting portion (2), and a plurality of exhaust holes (17) are provided at the top end of the safety valve body (3) in a circular array.

3. A miniature ultra-high pressure built-in safety valve according to claim 2, characterized in that: A first spring (6) is embedded in the safety valve body (3), and a sealing block (8) for sealing the air inlet hole (9) is elastically provided at the bottom end of the safety valve body (3).

4. A miniature ultra-high pressure built-in safety valve according to claim 3, characterized in that: A lifting plate (11) abutting against the first spring (6) is arranged at the top end of the safety valve body (3), and a groove (7) for accommodating the first spring (6) is provided on the side of the lifting plate (11) facing the sealing block (8).

5. A miniature ultra-high pressure built-in safety valve according to claim 4, characterized in that: The inner wall of the safety valve body (3) is provided with a clamping groove (4) on both sides, and the two ends of the lifting plate (11) and the sealing block (8) are provided with protruding positioning parts (5) that fit in and are inserted into the clamping groove (4).

6. A miniature ultra-high pressure built-in safety valve according to claim 1, characterized in that: A bolt (10) is threadedly inserted into the top end of the safety valve body (3), and the bottom end of the bolt (10) is rotatably clamped in the lifting plate (11).

7. A miniature ultra-high pressure built-in safety valve according to claim 1, characterized in that: A second spring (15) is embedded in the telescopic groove (14), and the pull rod (16) passes through the second spring (15) and is fixedly connected to the positioning block (13).

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