CN218152892U

CN218152892U - Connecting structure for safety valve

Info

Publication number: CN218152892U
Application number: CN202222730764.9U
Authority: CN
Inventors: 石荣滔; 蔡润程
Original assignee: Yancheng Jia'an Safety Technology Service Co ltd
Current assignee: Yancheng Jia'an Safety Technology Service Co ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2022-12-27
Anticipated expiration: 2032-10-17

Abstract

The utility model relates to a relief valve field just discloses a connection structure for relief valve, including the relief valve body, the medium export has been seted up to the lower extreme of relief valve body one side, the medium import has been seted up to the opposite side of relief valve body bottom, the one end fixedly connected with fixed flange dish of medium import and medium export, the one end swing joint of medium import and medium export has the connecting pipe, the one end fixedly connected with connected flange dish of connecting pipe. This connection structure for safety valve utilizes the elasticity of spacing spring for the slider slides and drives stopper removal card to spacing downthehole portion, carries out spacing chucking to fastening bolt, and the stopper behind the block, can increase and fastening nut one side and the contact friction force on its top, and then realizes the locking processing of moving up of chucking to fastening bolt and fastening nut, avoids the two probably to take place the not firm of screw thread not hard up and lead to flange plate and fixed flange dish installation, improves its practicality.

Description

Connecting structure for safety valve

Technical Field

The utility model relates to a relief valve field specifically is a connection structure for relief valve.

Background

The safety valve is a branch of a valve family which is special, not only plays a role of opening and closing, but also plays a role of protecting the safety of equipment more importantly, along with the rapid development of economic construction in China, equipment project projects with pressure control are more and more, so that the use demand of the safety valve is increased, wherein an inlet and an outlet of the safety valve are connected with an external connecting pipeline by adopting a flange plate to ensure the firm stability after connection.

In the Chinese utility model patent: a connection structure of gas safety valve of grant notice No. CN209180568U belongs to relief valve technical field, its technical scheme main points: comprises a gas safety valve; and, the gas-supply pipe that is connected with the gas safety valve, the gas safety valve be equipped with gas-supply pipe assorted gas outlet, it has first arc clamp to articulate on the outer wall of gas outlet department, the gas-supply pipe articulates with the one end of gas safety valve assembly have with first arc clamp assorted second arc clamp, be equipped with on first arc clamp and the second arc clamp and be used for connecting locking subassembly between them, the utility model discloses a connection structure of gas safety valve can make the gas safety valve and be connected more firmly between the gas-supply pipe when using, reduces the condition that gas leaked from the gas safety valve.

The following problems exist in the prior art:

1. the connecting structure for the safety valve in the prior art is inconvenient to be prevented from moving, and although the bolts and nuts on the flange plate can ensure the installation firmness, the bolts and nuts can be loosened due to the vibration generated by long-term use and medium flowing, so that the installation firmness is reduced, and the sealing performance of the connecting part can be influenced.

2. In the prior art, the connecting structure for the safety valve is single in sealing structure, only one sealing ring is usually adopted as the sealing of a joint, but the sealing structure is single, and the long-term stable sealing effect is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a connection structure for relief valve possesses the locking of being convenient for and moves and sealed effectual advantage such as, has solved the problem among the above-mentioned background art.

(II) technical scheme

For realizing the above-mentioned locking effectual purpose of becoming flexible and sealed of being convenient for, the utility model provides a following technical scheme: the connecting structure for the safety valve comprises a safety valve body, wherein a medium outlet is formed in the lower end of one side of the safety valve body, a medium inlet is formed in the other side of the bottom end of the safety valve body, a fixed flange plate is fixedly connected to one end of the medium inlet and one end of the medium outlet, a sealing structure is movably connected to one end of the inner wall of the medium inlet and one end of the inner wall of the medium outlet, a connecting pipe is movably connected to one end of the medium inlet and one end of the medium outlet, a connecting flange plate is fixedly connected to one end of the connecting pipe, a fastening bolt penetrating through the connecting flange plate is movably connected to one end of the connecting flange plate, a fastening nut in threaded fit with the fastening bolt is movably connected to one end of the fixing flange plate, and a limiting structure is movably connected to one end of the fixing flange plate on one side of the fastening nut.

The limiting structure comprises a sliding groove, the sliding groove is arranged at one end inside the fixed flange plate, a limiting spring is fixedly connected to the inner side wall of the sliding groove, a sliding block is fixedly connected to one side of the limiting spring, one end of the sliding block is fixedly connected to a limiting block extending to the outside of the fixed flange plate, a limiting hole matched with one side of the limiting block is formed in the upper end of one side of the fastening bolt, elastic force of the limiting spring is utilized, the sliding block drives the limiting block to move towards the inside of the limiting hole in a sliding mode, the limiting block is clamped on the fastening bolt, the contact friction force between one side of the fastening bolt and the top of the fastening nut can be increased due to the limiting block, and then clamping looseness prevention processing of the fastening bolt and the fastening nut is achieved, and the situation that the connecting flange plate and the fixed flange plate are installed due to the fact that threads are loosened is avoided.

Preferably, constitute the block structure between one side of stopper and the spacing downthehole portion, and constitute sliding construction between the inside of stopper opposite side bottom through slider and spout, guarantee to fastening bolt's spacing chucking nature, avoid fastening bolt possible screw thread not hard up.

Preferably, one side fixedly connected with block rubber of stopper bottom, and the shape of block rubber is right trapezoid for behind the stopper block, can increase the contact friction power of stopper one side bottom and fastening nut top one side, and then be convenient for to fastening nut's spacing chucking.

Preferably, the shape of stopper is the type of falling L, and the height that highly is greater than fastening nut of stopper, and the increase is not hard up to the screw thread between fastening nut and the fastening bolt to the contact friction force on one side of fastening nut and its top.

Preferably, a thread dismounting structure is formed between the fastening bolt and the fastening nut, six fastening bolts and six fastening nuts are distributed at equal angles, and the firmness and stability of the connecting flange plate and the fixed flange plate after installation are guaranteed.

Preferably, seal structure includes first sealing washer, first sealing washer fixed connection is at the inner wall of medium import and medium export, and the one end fixedly connected with second sealing washer of first sealing washer, the ring channel has been seted up to the inside other end annular of first sealing washer, and the inside annular fixedly connected with beaded finish of first sealing washer, after the installation of carrying out the connecting pipe, first sealing washer and second sealing washer can block inside the connecting pipe, and set up the beaded finish and can consolidate the junction between flange dish and the fixed flange dish, reduce here stress and lead to first sealing washer deformation too big and arouse the decline of leakproofness, and then realize the double seal after the two is connected through first sealing washer and second sealing washer, guarantee sealed effect.

Preferably, the outer wall of the second sealing ring is provided with a sealing lip, and the cross section of the sealing lip is in a sawtooth shape, so that the friction force between the second sealing ring and the inner wall of the connecting pipe is increased.

Preferably, the fixed surface of beaded finish is connected with flexible arch, and flexible bellied shape is the arc, increases the contact frictional force of beaded finish outer wall and connecting pipe, medium import and medium export inner wall, guarantees the two block compactness.

Advantageous effects

Compared with the prior art, the utility model provides a connection structure for relief valve possesses following beneficial effect:

1. this connection structure for safety valve, stopper through setting up, the slider, the block rubber, spacing spring and spacing hole, utilize the elasticity of spacing spring, make the slider slide and drive the stopper and remove the card to spacing downthehole portion, carry out spacing chucking to fastening bolt, and fall the stopper of L type and the block rubber of its bottom one side, increase and fastening nut one side and the contact friction force on its top, and then realize the locking processing that becomes flexible of chucking to fastening bolt and fastening nut, avoid the two probably to take place the not firm of screw thread not hard up and lead to flange plate and fixed flange dish installation, avoid the bolt not hard up decline that leads to the junction leakproofness simultaneously, guarantee the inseparable fastness of its connection, thereby the problem of inconvenient locking not hard up has been solved.

2. This connection structure for relief valve, first sealing washer through setting up, the ring channel, second sealing washer and beaded finish, after carrying out the installation of connecting pipe, first sealing washer and second sealing washer can block inside the connecting pipe, and set up the beaded finish and can consolidate the junction between flange plate and the fixed flange dish, reduce here stress and lead to the decline of first sealing washer deformation too big and arouse the leakproofness, prolong the life of first sealing washer, and then realize the dual seal after the two is connected through first sealing washer and second sealing washer, guarantee sealed effect, avoid the single limitation of seal structure, thereby the more single problem of seal structure has been solved.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

fig. 2 is a schematic view of a top-view cross-sectional structure of the connecting flange of the present invention;

FIG. 3 is a schematic view of a three-dimensional structure of the limiting block of the present invention;

fig. 4 is a schematic view of a partially enlarged structure of the sealing structure of the present invention;

fig. 5 is an enlarged schematic structural diagram of a in fig. 1 according to the present invention.

In the figure: 1. a safety valve body; 2. a connecting pipe; 3. a sealing structure; 301. a first seal ring; 302. an annular groove; 303. a second seal ring; 304. a sealing lip; 305. a flexible protrusion; 306. a reinforcement ring; 4. connecting a flange plate; 5. fixing a flange plate; 6. a media inlet; 7. a media outlet; 8. a limiting structure; 801. a limiting block; 802. a chute; 803. a slider; 804. a rubber block; 805. a limiting spring; 806. a limiting hole; 9. fastening a bolt; 10. and (5) tightening the nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Example 1

The preferred embodiment of the connecting structure for the safety valve provided by the utility model is shown in figures 1 to 5: the utility model provides a connection structure for relief valve, including relief valve body 1, medium export 7 has been seted up to the lower extreme of 1 one side of relief valve body, medium import 6 has been seted up to the opposite side of 1 bottom of relief valve body, the one end fixedly connected with fixed flange dish 5 of medium import 6 and medium export 7, the one end swing joint of medium import 6 and medium export 7 inner wall has seal structure 3, the one end swing joint of medium import 6 and medium export 7 has connecting pipe 2, the one end fixedly connected with connection flange dish 4 of connecting

pipe

2, 4 one end swing joints of connection flange dish have fastening bolt 9 that runs through

connection flange dish

4, 5 one end swing joints of fixed flange dish have with fastening bolt 9 looks screw-thread fit's

fastening nut

10, 5 one end swing joints of fixed flange dish of fastening nut 10 one side have limit structure 8.

Limit structure 8 includes spout 802, spout 802 sets up the inside one end at fixed flange dish 5, the spacing spring 805 of inside wall fixedly connected with of spout 802, one side fixedly connected with slider 803 of spacing spring 805, slider 803 one end fixedly connected with extends to the outside stopper 801 of fixed flange dish 5, fastening bolt 9 one side upper end is seted up with stopper 801 one side matched with spacing hole 806, utilize the elasticity of spacing spring 805, make slider 803 slide and drive stopper 801 removal card to spacing hole 806 inside, carry out spacing chucking to fastening bolt 9, and can increase the contact friction with fastening nut 10 one side and its top, and then realize the locking processing of chucking to fastening bolt 9 and fastening nut 10, avoid the two probably to take place the not firm of screw thread locking lead to connecting flange dish 4 and fixed flange dish 5 installation.

In this embodiment, constitute the block structure between one side of stopper 801 and spacing hole 806 inside, and stopper 801 opposite side bottom constitutes sliding construction through between the inside of slider 803 and spout 802, through the block of stopper 801 one side upper end and spacing hole 806 inside, guarantees the spacing chucking nature to fastening bolt 9, avoids the possible screw thread of fastening bolt 9 to become flexible.

In this embodiment, one side fixedly connected with block rubber 804 of stopper 801 bottom, and the shape of block rubber 804 is right trapezoid, through right trapezoid's block rubber 804 for behind the stopper 801 block, can increase the contact friction force of stopper 801 one side bottom and fastening nut 10 top one side, and then be convenient for to fastening nut 10's spacing chucking.

In this embodiment, the shape of stopper 801 is the type of falling L, and stopper 801 highly is greater than fastening nut 10's height, and through setting up the stopper 801 of the type of falling L, the increase is not hard up to the screw thread between fastening nut 10 and the fastening bolt 9 to the contact frictional force on fastening nut 10 one side and its top.

In this embodiment, a thread dismounting structure is formed between the fastening bolts 9 and the fastening nuts 10, six fastening bolts 9 and six fastening nuts 10 are distributed at equal angles, and the fastening bolts 9 and the fastening nuts 10 distributed at equal angles ensure the firmness and stability after installation between the connecting flange plate 4 and the fixing flange plate 5.

Example 2

On the basis of embodiment 1, the present invention provides a preferred embodiment of a connection structure for a relief valve, which is shown in fig. 1 to 5: seal structure 3 includes first sealing washer 301, first sealing washer 301 fixed connection is at the inner wall of medium inlet 6 and medium export 7, and the one end fixedly connected with second sealing washer 303 of first sealing washer 301, annular groove 302 has been seted up to the other end annular of first sealing washer 301 inside, and the inside annular fixedly connected with beaded finish 306 of first sealing washer 301, can consolidate the junction between flange 4 and the fixed flange 5 through setting up beaded finish 306, it leads to first sealing washer 301 to deform too greatly and arouse the decline of leakproofness to reduce here stress, prolong its life, and then the double sealing after the two is connected is realized to accessible first sealing washer 301 and second sealing washer 303, guarantee sealed effect.

In this embodiment, the outer wall of the second sealing ring 303 is provided with a sealing lip 304, the cross section of the sealing lip 304 is serrated, and the friction force between the second sealing ring 303 and the inner wall of the connecting pipe 2 is increased by the serrated sealing lip 304.

In this embodiment, the fixed surface of the reinforcement ring 306 is connected with the flexible protrusion 305, and the shape of the flexible protrusion 305 is arc-shaped, and by arranging the arc-shaped flexible protrusion 305, the contact friction force between the outer wall of the reinforcement ring 306 and the inner walls of the connection pipe 2, the medium inlet 6 and the medium outlet 7 is increased, and the clamping tightness between the outer wall of the reinforcement ring and the inner wall of the connection pipe 2, the medium inlet 6 and the medium outlet 7 is ensured.

When the anti-loosening device is used, the limiting block 801 is shifted, the sliding block 803 slides in the sliding groove 802 to compress the limiting spring 805 to a proper position, the installation and fixation between the connecting flange plate 4 and the fixed flange plate 5 are realized through the thread fit of the fastening bolt 9 and the fastening nut 10, then the elastic force of the limiting spring 805 is utilized, the sliding block 803 slides to drive the limiting block 801 to move and clamp into the limiting hole 806 to limit and clamp the fastening bolt 9, and the contact friction force between the reverse L-shaped limiting block 801 and the rubber block 804 on one side of the bottom end of the reverse L-shaped limiting block 801 and the top end of the fastening nut 10 is increased, so that the clamping and anti-loosening treatment on the fastening bolt 9 and the fastening nut 10 is realized, and the problem that the connecting flange plate 4 and the fixed flange plate 5 are installed infirm due to the possibility of thread loosening of the two is avoided;

meanwhile, when the sealing device is installed, the first sealing ring 301 and the second sealing ring 303 can be clamped into the connecting pipe 2, the reinforcing ring 306 is arranged to reinforce the joint between the connecting flange 4 and the fixing flange 5, the problem that the sealing performance is reduced due to the fact that the first sealing ring 301 deforms excessively due to stress at the joint is reduced, the arc-shaped flexible protrusion 305 is arranged, the contact friction force between the outer wall of the reinforcing ring 306 and the inner wall of the connecting pipe 2 and between the outer wall of the reinforcing ring and the inner wall of the medium inlet 6 and the inner wall of the medium outlet 7 is increased, the clamping tightness of the first sealing ring 301 and the inner wall of the medium outlet 6 is guaranteed, meanwhile, the cross section of the sealing ring is a serrated sealing lip 304, the friction force between the second sealing ring 303 and the inner wall of the connecting pipe 2 can be increased, after the sealing device is installed, the stability of the first sealing ring 301 and the second sealing ring 303 and the inner wall of the connecting pipe 2 is guaranteed, and the double sealing effect is achieved through the first sealing ring 301 and the second sealing ring 303.

In conclusion, the connecting structure for the relief valve can limit and clamp the fastening bolt 9 and the fastening nut 10, avoids unstable installation of the connecting flange plate 4 and the fixing flange plate 5 caused by possible loosening of threads of the fastening bolt and the fastening nut, or reduces the sealing performance caused by infirm installation, can improve the sealing performance of the connecting pipe 2, the medium inlet 6 and the medium outlet 7 after connection by using the first sealing ring 301 and the second sealing ring 303, and ensures the sealing effect in long-term use.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A connection structure for relief valve, includes relief valve body (1), its characterized in that: the safety valve comprises a safety valve body (1), a medium outlet (7) is formed in the lower end of one side of the safety valve body (1), a medium inlet (6) is formed in the other side of the bottom end of the safety valve body (1), a fixed flange disc (5) is fixedly connected to one ends of the medium inlet (6) and the medium outlet (7), a sealing structure (3) is movably connected to one ends of the inner walls of the medium inlet (6) and the medium outlet (7), a connecting pipe (2) is movably connected to one ends of the medium inlet (6) and the medium outlet (7), a connecting flange disc (4) is fixedly connected to one end of the connecting pipe (2), a fastening bolt (9) penetrating through the connecting flange disc (4) is movably connected to one end of the connecting flange disc (4), a fastening nut (10) in threaded fit with the fastening bolt (9) is movably connected to one end of the fixed flange disc (5) on one side of the fastening nut (10), and a limiting structure (8) is movably connected to one end of the fixed flange disc (5) on one side of the fastening nut (10);

limiting structure (8) include spout (802), the inside one end in fixed flange dish (5) is seted up in spout (802), the spacing spring of inside wall fixedly connected with (805) of spout (802), one side fixedly connected with slider (803) of spacing spring (805), slider (803) one end fixedly connected with extends to the outside stopper (801) of fixed flange dish (5), fastening bolt (9) one side upper end is seted up with stopper (801) one side matched with spacing hole (806).

2. The connecting structure for a relief valve according to claim 1, wherein: a clamping structure is formed between one side of the limiting block (801) and the inside of the limiting hole (806), and a sliding structure is formed between the bottom end of the other side of the limiting block (801) and the inside of the sliding groove (802) through the sliding block (803).

3. The connecting structure for a relief valve according to claim 1, wherein: one side fixedly connected with rubber block (804) of stopper (801) bottom, and the shape of rubber block (804) is right trapezoid.

4. The connecting structure for the relief valve according to claim 1, wherein: the limiting block (801) is in an inverted L shape, and the height of the limiting block (801) is larger than that of the fastening nut (10).

5. The connecting structure for a relief valve according to claim 1, wherein: a thread dismounting structure is formed between the fastening bolt (9) and the fastening nut (10), and six fastening bolts (9) and six fastening nuts (10) are distributed at equal angles.

6. The connecting structure for a relief valve according to claim 1, wherein: seal structure (3) are including first sealing washer (301), first sealing washer (301) fixed connection is at the inner wall of medium import (6) and medium export (7), and the one end fixedly connected with second sealing washer (303) of first sealing washer (301), ring channel (302) have been seted up to the other end annular of first sealing washer (301) inside, and the inside annular fixedly connected with beaded finish (306) of first sealing washer (301).

7. The connecting structure for a relief valve according to claim 6, wherein: the outer wall of the second sealing ring (303) is provided with a sealing lip (304), and the cross section of the sealing lip (304) is in a sawtooth shape.

8. The connecting structure for a relief valve according to claim 6, wherein: the surface of the reinforcing ring (306) is fixedly connected with a flexible bulge (305), and the shape of the flexible bulge (305) is arc-shaped.