阅读说明：本技术 一种液化气管道接口防护装置及方法 (Liquefied gas pipeline interface protection device and method ) 是由 曹敏俊 于 2021-09-13 设计创作，主要内容包括：本发明公开了一种液化气管道接口防护装置及方法,包括上保护块和下保护块,所述上保护块和下保护块两侧均设有连接侧板,所述上保护块和下保护块通过锁定螺栓锁定连接侧板进行固定连接,所述上保护块和下保护块内部位于液化气管道的接口处开设有容纳槽；当液化气管道的接口处发生泄漏时,上保护块和下保护块组成的腔体内的气压升高,推动活塞块、活塞杆和限位顶块克服第一弹簧向上移动,活塞杆向上移动时推动警报灯从安装筒内伸出,限位顶块向上移动时带动触发顶板一同向上移动,触发顶板向上移动会推动第二弹性铜块向上移动与第一弹性铜块接触,使电路接通,此时警报灯和蜂鸣器工作发出警报,进而可提醒工作人员前来处理。(The invention discloses a liquefied gas pipeline interface protection device and a liquefied gas pipeline interface protection method, wherein the liquefied gas pipeline interface protection device comprises an upper protection block and a lower protection block, connecting side plates are arranged on two sides of the upper protection block and two sides of the lower protection block, the upper protection block and the lower protection block are fixedly connected through locking the connecting side plates by locking bolts, and an accommodating groove is formed in the upper protection block and the lower protection block at an interface of a liquefied gas pipeline; when the kneck of liquefied gas pipeline takes place to leak, the atmospheric pressure in the cavity that upper protection piece and lower protection piece are constituteed risees, promote the piston piece, first spring rebound is overcome to piston rod and spacing kicking block, promote the warning light and stretch out from the installation section of thick bamboo when the piston rod rebound, drive the same rebound of trigger roof when spacing kicking block rebound, it can promote second elasticity copper billet rebound and first elasticity copper billet contact to trigger the roof rebound, make the circuit switch-on, warning light and buzzer work send out the police dispatch newspaper this moment, and then can remind the staff to come to handle.)

1. The utility model provides a liquefied gas pipeline interface protector, includes protection piece (10) and lower protection piece (2), it all is equipped with connection curb plate (1) with protection piece (2) both sides down to go up protection piece (10), it carries out fixed connection, its characterized in that to go up protection piece (10) and lower protection piece (2) through locking bolt (33) locking connection curb plate (1): an accommodating groove (6) is formed in the upper protection block (10) and the lower protection block (2) at the joint (5) of the liquefied gas pipeline (9), sealing grooves (7) are formed in the positions, located on the two sides of the accommodating groove (6), of the upper protection block (10) and the lower protection block (2), and secondary sealing assemblies used for forming sealing are arranged in the sealing grooves (7);

one sides of the upper protection block (10) and the lower protection block (2) are both provided with a communicating groove (8), the upper protection block (10) is fixedly connected with an installation cylinder (24) communicated with the communicating groove (8), a partition plate (20) is arranged at the upper end inside the mounting cylinder (24), a round hole is formed in the center of the partition plate (20), a sealing ring (18) is arranged in the round hole, a piston rod (22) is connected in the sealing ring (18) in a sliding manner, a piston block (15) is fixedly connected to the lower end of the piston rod (22), the piston block (15) is connected with the inside of the mounting cylinder (24) in a sliding manner, a first spring (17) is arranged between the piston block (15) and the clapboard (20) in the piston rod (22) in a penetrating way, the upper end of the piston rod (22) is further provided with a limiting top block (19), and the limiting top block (19) is further provided with an early warning assembly for giving out early warning when liquefied gas leaks.

2. The interface protection device for the liquefied gas pipeline according to claim 1, wherein the secondary sealing assembly comprises an annular air bag (4), the two annular air bags (4) are respectively installed in two sealing grooves (7), two inflation channels (11) communicated with the sealing grooves (7) are respectively formed in the upper end of the upper protection block (10), an air inlet of the annular air bag (4) is communicated with the inflation channels (11), and an inflation assembly for inflating the annular air bag (4) by inflating the inflation channels (11) is further arranged on the upper protection block (10).

3. The interface protection device for the liquefied gas pipeline according to claim 2, wherein the inflation assembly comprises an inflation hole (16), the inflation hole (16) is opened at a position on the side of the mounting cylinder (24) close to the inflation channel (11) and above the piston block (15), the inflation hole (16) is connected with a communicating pipe (14), the communicating pipe (14) is connected with two inflation tubes (13), and one ends of the inflation tubes (13) far away from the communicating pipe (14) are both communicated with the inflation channel (11).

4. The interface protection device for the liquefied gas pipeline according to claim 1, wherein the early warning component comprises an alarm lamp (21), the alarm lamp (21) is installed on the upper end surface of the limit top block (19), an emergency power supply (26) is further provided at one end of the upper protection block (10), a buzzer (25) is provided at the upper end of the emergency power supply (26), and a trigger component for starting the alarm lamp (21) and the buzzer (25) is further provided at the upper end of the installation cylinder (24).

5. The liquefied gas pipeline interface protection device according to claim 4, the trigger component comprises a strip-shaped groove (32), the strip-shaped groove (32) is arranged at the upper end of one side of the mounting cylinder (24), a limiting slide rod (27) is fixedly connected in the strip-shaped groove (32), a sliding block (29) is connected on the limiting slide rod (27) in a sliding way, a second spring (28) is arranged between the upper end surface of the strip-shaped groove (32) and the sliding block (29) in a penetrating way on the limiting sliding rod (27), a first elastic copper block (31) is arranged at the position of one side of the mounting cylinder (24) which is positioned at the upper end of the strip-shaped groove (32), a second elastic copper block (30) matched with the first elastic copper block (31) is arranged on the sliding block (29), and the limiting top block (19) is also fixedly connected with a trigger top plate (23) used for pushing the second elastic copper block (30) to move.

6. Liquefied gas pipeline interface protection device according to claim 5, wherein said first resilient copper block (31) and said second resilient copper block (30) are electrically connected to said emergency power supply (26), said buzzer (25) and said alarm light (21), respectively.

7. Liquefied gas pipeline interface protection device according to claim 1, wherein the sealing gasket (3) made of rubber material is attached to the opposite sides and the opposite arc surfaces of the upper protection block (10) and the partition plate (20).

8. A liquefied gas pipeline interface protection device according to claim 3, wherein a check valve (12) is provided on each of said two gas filling pipes (13).

9. A liquefied gas pipeline interface protection device according to claim 1, wherein a circular cover plate (34) made of plastic material is rotatably connected to the upper end of the mounting cylinder (24).

10. A method of using a liquefied gas pipe interface protector as claimed in claims 1-9, wherein: comprises the following steps;

step 1, when the device is used, two annular air bags (4) are firstly sleeved at the positions of two sides of an interface (5), the annular air bags (4) are aligned with a sealing groove (7), then an upper protection block (10) and a lower protection block (2) are installed at the interface (5) of a liquefied gas pipeline (9) and are locked by adopting a locking bolt (33), and the sealing gaskets (3) arranged on the opposite sides of a connecting side plate (1) and a sealing gasket (3) and an arc surface can ensure the sealing performance of the upper protection block (10) and the lower protection block (2);

step 2, when the interface (5) leaks, the air pressure in a cavity formed by the upper protection block (10) and the lower protection block (2) rises, the piston block (15), the piston rod (22) and the limiting top block (19) are pushed to move upwards to overcome the first spring (17), the alarm lamp (21) is pushed to extend out of the installation cylinder (24) when the piston rod (22) moves upwards, the limiting top block (19) drives the trigger top plate (23) to move upwards together when moving upwards, the trigger top plate (23) moves upwards to push the second elastic copper block (30) to move upwards to enable the second elastic copper block (30) to be in contact with the first elastic copper block (31), and then the circuit is switched on, and at the moment, the alarm lamp (21) and the buzzer (25) work to give an alarm, so that a worker can be reminded of coming forward treatment;

after the piston block (15) moves upwards, the piston block (15) is located above the inflation hole (16), leaked gas enters the communicating pipe (14) from the inflation hole (16), and then enters the annular air bag (4) through the two inflation pipes (13) and the one-way valve (12), so that the annular air bag (4) expands to plug the positions on the two sides of the interface (5), secondary sealing is realized, and continuous leakage at the interface (5) is avoided.

Technical Field

The invention relates to the technical field of liquefied gas conveying, in particular to a liquefied gas pipeline interface protection device and method.

Background

Liquefied gas liquefied petroleum gas is a colorless volatile liquid obtained by pressurizing, cooling and liquefying natural gas or petroleum in an oil refinery. Need dock the pipeline to utilizing joint or welded mode in liquefied gas pipeline's the laying, but pipeline interface department is weak relatively, after the pipeline is put into use, owing to receive the influence of impact and vibrations, the very easy breach of joint department of pipeline takes place to leak, consequently needs protect the interface of pipeline.

Present patent CN201720802736.X provides a chemical pipeline kneck protector, this chemical pipeline kneck protector, through first casing and the second casing of setting on first pipeline body and second pipeline body, protect the interface body, when chemical liquid leaks and sprays all around to appearing in interface body department, first casing and second casing have realized the protection that blocks to spraying liquid, block the liquid that sprays in first casing and second casing, the liquid that sprays just can not cause the impact injury to the workman yet, thereby also avoided the corrosivity harm that harm nature chemical liquid caused the workman.

However, the device still has certain defects in use, and due to the fact that the leakage amount is small at the initial leakage stage of liquefied gas, the leakage amount is not easy to find, the existing device cannot give an early warning in time when the natural gas leaks to prompt workers, and cannot automatically plug the natural gas pipeline to prevent continuous leakage of the natural gas.

Disclosure of Invention

The present invention is directed to a liquefied gas pipeline interface protection device and method, so as to solve the problems set forth in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

a liquefied gas pipeline interface protection device comprises an upper protection block and a lower protection block, wherein connecting side plates are arranged on two sides of the upper protection block and two sides of the lower protection block, the upper protection block and the lower protection block are fixedly connected through locking bolts to lock the connecting side plates, an accommodating groove is formed in the interface, located on the liquefied gas pipeline, of the inner portion of the upper protection block and the interface, located on the two sides of the accommodating groove, of the lower protection block, sealing grooves are formed in the positions, located on the two sides of the accommodating groove, of the upper protection block and the positions, located on the two sides of the accommodating groove, of the lower protection block, and secondary sealing assemblies used for forming sealing are arranged in the sealing grooves;

go up the protection piece and all seted up the intercommunication groove with protection piece one side down, go up the installation section of thick bamboo that fixedly connected with and intercommunication groove are linked together on the protection piece, the inside upper end of installation section of thick bamboo is equipped with the baffle, and the baffle center is equipped with the round hole, is equipped with the sealing washer in the round hole, and sliding connection has the piston rod in the sealing washer, and piston rod lower extreme fixedly connected with piston piece, piston piece and the inside sliding connection of installation section of thick bamboo, the position that the piston rod is located between piston piece and the baffle is worn to be equipped with first spring, piston rod upper end still is equipped with spacing kicking block, still installs the early warning subassembly that is used for sending the early warning when liquefied gas leaks on the spacing kicking block.

As a further scheme of the invention: the secondary seal subassembly includes annular gasbag, and two annular gasbags are installed respectively in two seal grooves, go up the protection piece upper end and all set up two and seal groove intercommunication's inflation channel, annular gasbag's air inlet and inflation channel are linked together, go up and still be equipped with on the protection piece and be used for carrying out gas filled assembly to annular gasbag to inflation channel gas transmission.

As a still further scheme of the invention: the inflation assembly comprises an inflation hole, the inflation hole is formed in the position, close to the inflation channel, of the mounting barrel and located above the piston block, a communication pipe is connected to the inflation hole, two inflation pipes are connected to the communication pipe, and one ends, far away from the communication pipe, of the inflation pipes are communicated with the inflation channel.

As a still further scheme of the invention: the early warning subassembly includes the warning light, the warning light is installed at spacing kicking block up end, it still is equipped with emergency power supply to go up protection piece one end, and the emergency power supply upper end is equipped with bee calling organ, installation section of thick bamboo upper end still is equipped with the trigger subassembly that is used for starting warning light and bee calling organ.

As a still further scheme of the invention: trigger the subassembly and include the bar groove, the position of establishing in installation section of thick bamboo one side upper end is seted up in the bar groove, the spacing slide bar of bar inslot fixedly connected with, sliding connection has the sliding block on the spacing slide bar, the second spring is worn to be equipped with by the position that spacing slide bar is located between bar groove up end and the sliding block, the position that installation section of thick bamboo one side is located the bar groove upper end is equipped with first elasticity copper billet, install on the sliding block be used for with first elasticity copper billet complex second elasticity copper billet, it is used for promoting the roof that triggers that second elasticity copper billet removed to go back fixedly connected with on the spacing kicking block.

As a still further scheme of the invention: the first elastic copper block and the second elastic copper block are respectively electrically connected with the emergency power supply, the buzzer and the alarm lamp.

As a still further scheme of the invention: and sealing gaskets made of rubber materials are attached to the opposite sides of the upper protection block and the partition plate and the opposite arc surfaces.

As a still further scheme of the invention: and the two inflation pipes are respectively provided with a one-way valve.

As a still further scheme of the invention: the upper end of the mounting cylinder is rotatably connected with a circular cover plate (34) made of plastic.

Compared with the prior art, the invention has the beneficial effects that:

1. when the interface of the liquefied gas pipeline leaks, the air pressure in a cavity formed by the upper protection block and the lower protection block rises to push the piston block, the piston rod and the limiting top block to overcome the upward movement of the first spring, the piston rod pushes the alarm lamp to extend out of the mounting cylinder when moving upward, the limiting top block drives the trigger top plate to move upward together when moving upward, the trigger top plate moves upward to push the second elastic copper block to move upward to enable the second elastic copper block to be in contact with the first elastic copper block, so that a circuit is connected, and the alarm lamp and the buzzer work to give an alarm to remind the worker of coming to process.

2. According to the invention, through the arranged sealing groove and the annular air bag, secondary sealing can be carried out after the interface leaks, so that continuous leakage is avoided, when the interface leaks, the air pressure in a cavity formed by the upper protection block and the lower protection block rises to push the piston block to move upwards, the piston block is positioned above the inflation hole at the moment, leaked air enters the communicating pipe from the inflation hole and then enters the annular air bag through the two inflation pipes and the one-way valve, so that the annular air bag expands to plug the positions on two sides of the interface, secondary sealing is realized, and continuous leakage at the interface is avoided.

3. The invention can lead the lower protection block and the upper protection block to form the first-stage sealing to the interface through the sealing gaskets arranged on the opposite sides of the upper protection block and the lower protection block and on the cambered surface, thus the interface can not leak out of a cavity formed by the upper protection block and the lower protection block even if the interface leaks, the danger is avoided, simultaneously, the strength of the interface is greatly improved under the fixing action of the upper protection block and the lower protection block, and the leakage risk of the interface is reduced.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic cross-sectional structure of the present invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.

Fig. 4 is a schematic structural view of the sealing gasket of the present invention.

FIG. 5 is a schematic view showing the structure of the annular bladder of the present invention.

FIG. 6 is a schematic structural diagram of embodiment 2 of the present invention.

Wherein: 1. connecting the side plates; 2. a lower protection block; 3. a sealing gasket; 4. an annular air bag; 5. an interface; 6. accommodating grooves; 7. a sealing groove; 8. a communicating groove; 9. a liquefied gas conduit; 10. an upper protection block; 11. an inflation channel; 12. a one-way valve; 13. an inflation tube; 14. a communicating pipe; 15. a piston block; 16. an inflation hole; 17. a first spring; 18. a seal ring; 19. a limiting top block; 20. a partition plate; 21. an alarm light; 22. a piston rod; 23. triggering the top plate; 24. mounting the cylinder; 25. a buzzer; 26. an emergency power supply; 27. a limiting slide bar; 28. a second spring; 29. a slider; 30. a second elastic copper block; 31. a first resilient copper block; 32. a strip-shaped groove; 33. a locking bolt; 34. a circular cover plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 to 5, in an embodiment of the present invention, a liquefied gas pipeline interface protection device includes an upper protection block 10 and a lower protection block 2, connection side plates 1 are disposed on both sides of the upper protection block 10 and the lower protection block 2, the upper protection block 10 and the lower protection block 2 are fixedly connected by locking the connection side plates 1 through locking bolts 33, an accommodating groove 6 is disposed at an interface 5 of a liquefied gas pipeline 9 inside the upper protection block 10 and the lower protection block 2, seal grooves 7 are disposed at positions of both sides of the accommodating groove 6 of the upper protection block 10 and the lower protection block 2, and a secondary seal assembly for forming a seal is disposed in each seal groove 7; the opposite sides and the opposite cambered surfaces of the upper protection block 10 and the partition plate 20 are respectively provided with a sealing gasket 3 made of rubber;

through last protection piece 10 and the sealing gasket 3 that sets up on protection piece 2 opposite side and cambered surface down, can make down protection piece 2 and last protection piece 10 form the sealed of first order to interface 5, consequently even interface 5 takes place to leak also can not leak to the cavity that last protection piece 10 and protection piece 2 constitute down outside, the emergence of danger has been avoided, the intensity of interface 5 is improved greatly under the fixed action of last protection piece 10 and protection piece 2 down simultaneously, reduce interface 5's leakage risk.

The secondary sealing assembly comprises an annular air bag 4, the two annular air bags 4 are respectively arranged in two sealing grooves 7, two inflation channels 11 communicated with the sealing grooves 7 are respectively formed in the upper ends of the upper protection blocks 10, air inlets of the annular air bags 4 are communicated with the inflation channels 11, and the upper protection blocks 10 are further provided with inflation assemblies for inflating the annular air bags 4 by conveying air to the inflation channels 11; the inflation assembly comprises an inflation hole 16, the inflation hole 16 is arranged at a position, above the piston block 15, of one side, close to the inflation channel 11, of the installation barrel 24, a communicating pipe 14 is connected to the inflation hole 16, two inflation pipes 13 are connected to the communicating pipe 14, and one ends, far away from the communicating pipe 14, of the inflation pipes 13 are communicated with the inflation channel 11.

Through the seal groove 7 and the annular air bag 4 that set up, can carry out the secondary seal after interface 5 takes place to leak, avoid lasting the leakage, when interface 5 takes place to leak, the atmospheric pressure in the cavity that upper protection piece 10 and lower protection piece 2 are constituteed rises, promote piston block 15 rebound, piston block 15 is located the top of inflation hole 16 this moment, the gas that leaks enters into communicating pipe 14 from inflation hole 16, then through two gas tube 13 and check valve 12, enter into annular air bag 4, make annular air bag 4 take place the inflation and carry out the shutoff to the position in interface 5 both sides, realize the secondary seal, the lasting leakage of interface 5 department has been avoided.

Go up protection piece 10 and 2 one sides of lower protection piece and all seted up intercommunication groove 8, go up protection piece 10 and go up the installation section of thick bamboo 24 that fixedly connected with and intercommunication groove 8 are linked together, the inside upper end of installation section of thick bamboo 24 is equipped with baffle 20, and baffle 20 center is equipped with the round hole, is equipped with sealing washer 18 in the round hole, and sliding connection has piston rod 22 in the sealing washer 18, and piston rod 22 lower extreme fixedly connected with piston piece 15, piston piece 15 and the inside sliding connection of installation section of thick bamboo 24, first spring 17 is worn to be equipped with by the position that piston rod 22 is located between piston piece 15 and the baffle 20, piston rod 22 upper end still is equipped with spacing kicking block 19, still installs the early warning subassembly that is used for sending the early warning when liquefied gas leaks on the spacing kicking block 19.

Through setting up the early warning subassembly, can be in time send out the police dispatch newspaper when liquefied gas pipeline interface takes place to leak, remind the staff to handle the department of leaking to the staff can in time discover the department of leaking.

The early warning assembly comprises a warning lamp 21, the warning lamp 21 is installed on the upper end face of the limiting top block 19, an emergency power supply 26 is further arranged at one end of the upper protection block 10, a buzzer 25 is arranged at the upper end of the emergency power supply 26, and a triggering assembly used for starting the warning lamp 21 and the buzzer 25 is further arranged at the upper end of the installation cylinder 24; the trigger assembly comprises a strip-shaped groove 32, the strip-shaped groove 32 is formed in the upper end of one side of the mounting barrel 24, a limiting slide rod 27 is fixedly connected in the strip-shaped groove 32, a slide block 29 is connected on the limiting slide rod 27 in a sliding manner, a second spring 28 penetrates through the position, located between the upper end face of the strip-shaped groove 32 and the slide block 29, of the limiting slide rod 27, a first elastic copper block 31 is arranged at the position, located at the upper end of the strip-shaped groove 32, of one side of the mounting barrel 24, a second elastic copper block 30 used for being matched with the first elastic copper block 31 is mounted on the slide block 29, and a trigger top plate 23 used for pushing the second elastic copper block 30 to move is further fixedly connected to the limiting top block 19; the first elastic copper block 31 and the second elastic copper block 30 are respectively electrically connected with the emergency power supply 26, the buzzer 25 and the warning lamp 21.

When leakage occurs at the interface 5 of the liquefied gas pipeline 9, the air pressure in the cavity formed by the upper protection block 10 and the lower protection block 2 rises, the piston block 15, the piston rod 22 and the limit top block 19 are pushed to move upwards against the first spring 17, the alarm lamp 21 is pushed to extend out of the installation cylinder 24 when the piston rod 22 moves upwards, the limit top block 19 drives the trigger top plate 23 to move upwards together when moving upwards, the trigger top plate 23 moves upwards to push the second elastic copper block 30 to move upwards to enable the second elastic copper block 30 to be in contact with the first elastic copper block 31, so that a circuit is connected, and the alarm lamp 21 and the buzzer 25 work to give an alarm to remind a worker of treatment before.

Example 2

Referring to fig. 6, the difference from embodiment 1 is: the upper end of the mounting cylinder 24 is rotatably connected with a circular cover plate 34 made of plastic; by providing a circular cover plate, dust or rain can be prevented from accumulating in the mounting tube 24 when the device is used in an open air environment.

The working principle of the invention is as follows: when the invention is used, two annular air bags 4 are firstly sleeved at the two sides of a connector 5, the annular air bags 4 are aligned with a sealing groove 7, then an upper protection block 10 and a lower protection block 2 are installed at the connector 5 of a liquefied gas pipeline 9 and are locked by adopting a locking bolt 33, the sealing gaskets 3 arranged at the opposite sides of a connecting side plate 1 and the sealing gaskets 3 and on the arc surface can ensure the sealing performance of the upper protection block 10 and the lower protection block 2, when the connector 5 leaks, the air pressure in a cavity formed by the upper protection block 10 and the lower protection block 2 is raised, a piston block 15, a piston rod 22 and a limit top block 19 are pushed to overcome a first spring 17 to move upwards, when the piston rod 22 moves upwards, an alarm lamp 21 is pushed to extend out from an installation cylinder 24, when the limit top block 19 moves upwards, a trigger top plate 23 is driven to move upwards together, the trigger top plate 23 moves upwards to push a second elastic copper block 30 to move upwards so that the second elastic copper block 30 is contacted with a first elastic copper block 31, and then the circuit is switched on, the alarm lamp 21 and the buzzer 25 work to give an alarm at the moment, and further the working personnel can be reminded of coming treatment, after the piston block 15 moves upwards, the piston block 15 is positioned above the inflation hole 16 at the moment, leaked gas enters the communicating pipe 14 from the inflation hole 16 and then enters the annular air bag 4 through the two inflation pipes 13 and the one-way valve 12, so that the annular air bag 4 expands to plug the positions of the two sides of the interface 5, and secondary sealing is realized.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and that the present invention may be practiced in other specific forms, and that the present specification together with its components set forth in the various embodiments may be suitably combined to form other embodiments, which will be apparent to those skilled in the art.