CN111365512A

CN111365512A - Electromagnetic valve for natural gas pipeline

Info

Publication number: CN111365512A
Application number: CN202010323805.5A
Authority: CN
Inventors: 周显双
Original assignee: Individual
Current assignee: Cixi Tianxing Electric Co ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-07-03
Anticipated expiration: 2040-04-22
Also published as: CN111365512B; CN114542786A

Abstract

The invention relates to the technical field of gas valves and discloses a solenoid valve for a natural gas pipeline. According to the invention, the electromagnetic block is arranged in the magnetic control mechanism and is connected in parallel with the detection device through the rectification, so that when the valve is used, the valve is opened through the repulsion force generated by the electromagnetic block and the permanent magnet, when the power is off, the electromagnetic block stops working, so that the repulsion force of the electromagnetic block and the permanent magnet is weakened, and the valve can be closed by pushing the electromagnetic block to the permanent magnet, so that the fuel gas pipeline is cut off in the power-off process, the phenomenon that the fuel gas cannot be cut off due to the fact that the cut-off valve does not work when the power is off is avoided, the use safety is ensured, and the purpose of automatically cutting off the fuel gas when the power is off is finally achieved.

Description

Electromagnetic valve for natural gas pipeline

Technical Field

The invention relates to the technical field of gas valves, in particular to an electromagnetic valve for a natural gas pipeline.

Background

An emergency cut-off valve in an electromagnetic valve for a natural gas pipeline is valve equipment which can control the influence of accidents by cutting off upstream fuel gas when equipment fails and emergencies such as leakage occur.

The working principle of the existing cut-off electromagnetic valve is as follows: hand pulling actuating lever shifts up for moving the iron core and being attracted by the permanent magnet, through case compression spring simultaneously, when detection device detected revealing, can weaken the magnetism of permanent magnet through the outside accuse magnetism mechanism of permanent magnet, thereby cut off the gas circulation with the case through the spring.

The existing cut-off solenoid valve needs to work in the powered-on state in the using process, and when the power is off, leaked gas cannot be detected by a detection device, so that a magnetic control mechanism cannot react, and finally a valve core cannot cut off the gas, so that the gas in the valve body continuously flows out, and gas explosion can be caused seriously.

And current spring is at the in-process that supports the case, thereby because long-time use of spring can make its fatigue strength increase and cause the phenomenon of spring inefficacy, and then at the in-process that needs cut off the gas, can't guarantee that the spring promotes the case and cuts off the gas to make the great reduction of security of trip valve.

Because the case is at the in-process of action again, need completely cut off the gas in valve body and the valve gap through the retaining ring, the effect through the spring can make required sealed scope great for the retaining ring is at the increase of sealed area, and then the probability of revealing of increase gas that can be great.

Simultaneously, it is isolated with the gas through the spring directly to pass through current case to at the isolated in-process of gas, the gas can be constantly strikeed the valve gap, thereby makes the spring be in under the load of alternation all the time, not only has certain damage to the spring, also makes the leakproofness of case reduce simultaneously.

Disclosure of Invention

The invention provides an electromagnetic valve for a natural gas pipeline, which has the advantages of automatically cutting off fuel gas when power is off, always pushing a valve core, increasing the sealing performance of a check ring and improving the sealing performance of the valve core, and solves the problems in the background art.

The invention provides the following technical scheme: the utility model provides an electromagnetic valve for natural gas line, includes the valve body, the air inlet has been seted up to the one end of valve body, and the other end of valve body has seted up the gas outlet, there is the valve gap through bolt fixed mounting on the surface of valve body, and the inner wall fixed mounting of valve gap has magnetism control mechanism, the inner wall top fixed mounting of magnetism control mechanism has main magnetic path, the inner wall movable mounting of magnetism control mechanism has the electromagnetism piece, and the bottom surface middle part fixed mounting of electromagnetism piece has the actuating lever, the top fixed mounting of actuating lever has the case, the bottom fixed mounting of electromagnetism piece has movable magnetic path, the lateral wall movable mounting of actuating lever has fixed magnetic path, and the bottom fixed mounting who just decides the magnetic path has the retaining ring, the one end and the valve body movable mounting of retaining ring.

Preferably, the driving rod is a cylindrical solid rod with a smooth surface.

And carefully selecting, wherein the valve core is made of soft rubber, and an oblique angle is arranged on the outer side of the top end of the valve core.

And carefully selecting, wherein a coil for electrifying is fixedly arranged on the outer side of the electromagnetic block, and the coil is spirally arranged on the outer side of the electromagnetic block.

And carefully selecting, wherein the conduit is a hollow cylindrical hose, a wire is fixedly installed on the inner wall of the hose, and the wire in the conduit is fixedly installed with the electromagnetic block and the magnetic control mechanism respectively.

The fixed magnetic block is a cylindrical permanent magnet, and a circular hole for driving the rod to move is formed in the surface of the fixed magnetic block.

The invention has the following beneficial effects:

1. according to the invention, the electromagnetic block is arranged in the magnetic control mechanism and is connected in parallel with the detection device through the rectification, so that when the valve is used, the valve is opened through the repulsion force generated by the electromagnetic block and the permanent magnet, when the power is off, the electromagnetic block stops working, so that the repulsion force of the electromagnetic block and the permanent magnet is weakened, and the valve can be closed by pushing the electromagnetic block to the permanent magnet, so that the fuel gas pipeline is cut off in the power-off process, the phenomenon that the fuel gas cannot be cut off due to the fact that the cut-off valve does not work when the power is off is avoided, the use safety is ensured, and the purpose of automatically cutting off the fuel gas when the power is off is finally achieved.

2. The valve core is controlled to move by mutual repulsion of the movable magnetic block and the fixed magnetic block, so that in the process of controlling the on-off of the valve core, the phenomenon of failure caused by long service time of the spring is avoided, and meanwhile, the movable magnetic block and the fixed magnetic block are both permanent magnetic blocks, so that the valve core is not influenced by external factors, the stability of long-time work is greatly ensured, the phenomenon that fuel gas cannot be cut off caused by failure of the spring is avoided, and the aim of always pushing the valve core is finally achieved.

3. The check ring sealing structure has the advantages that the valve body is connected with the valve cover only through the driving rod, so that only the driving rod is needed to act in the process of sealing the check ring, the sealing area of the check ring is greatly reduced, the driving rod is set to be the round rod, the sealing performance of the check ring can be enhanced, the phenomenon of gas leakage is avoided, and the purpose of increasing the sealing performance of the check ring is finally achieved.

4. According to the invention, the valve core is arranged at the air inlet, so that after the valve core is sealed, gas can be isolated, meanwhile, the valve core is impacted by the gas, the sealing property is greatly improved, the compression of the valve core on the spring is reduced, the sealing property of the valve core is greatly improved, and the purpose of improving the sealing property of the valve core can be finally achieved.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic partial cross-sectional view of the inventive structure;

fig. 3 is a schematic view of the valve core of the present invention.

In the figure: 1. a valve body; 2. an air inlet; 3. an air outlet; 4. a valve cover; 5. a magnetic control mechanism; 6. a main magnetic block; 7. an electromagnetic block; 8. a drive rod; 9. a valve core; 10. a movable magnet block; 11. a fixed magnetic block; 12. a retainer ring; 13. a conduit.

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.

Referring to fig. 1-3, an electromagnetic valve for a natural gas pipeline includes a valve body 1, an air inlet 2 is disposed at one end of the valve body 1, an air outlet 3 is disposed at the other end of the valve body 1, a valve cover 4 fixedly mounted on the surface of the valve body 1 through a bolt, a magnetic control mechanism 5 is fixedly mounted on the inner wall of the valve cover 4, a main magnetic block 6 is fixedly mounted on the top of the inner wall of the magnetic control mechanism 5, an electromagnetic block 7 is movably mounted on the inner wall of the magnetic control mechanism 5, a driving rod 8 is fixedly mounted in the middle of the bottom surface of the electromagnetic block 7, a valve core 9 is fixedly mounted at the top end of the driving rod 8, the valve core 9 can be pushed by the driving rod 8 to move, so as to facilitate the subsequent opening and closing of the valve, a movable magnetic block 10 is fixedly mounted at the bottom end of the electromagnetic block 7, a fixed magnetic block 11 is, move magnetic path 10 and decide magnetic path 11 and repel each other and make electromagnetism piece 7 lifted up, and then make actuating lever 8 pass through case 9 with the valve closure, finally can cut off air inlet 2 and the route of gas outlet 3, thereby great assurance the security of use, and the bottom fixed mounting who decides magnetic path 11 has retaining ring 12, the one end and the valve body 1 movable mounting of retaining ring 12, can be isolated with the inner chamber of valve gap 4 and valve body 1 through retaining ring 12, thereby avoid the gas to flow into in the inner chamber of valve gap 4, finally can improve the security of using, the top fixed mounting of valve gap 4 has conduit 13, can make magnetism control mechanism 5 and electromagnetism piece 7 be connected with outside detection device through conduit 13, thereby make things convenient for the break-make of control flap to provide.

Wherein, the actuating lever 8 is the smooth cylindrical solid pole in surface, because the friction between the reducible actuating lever 8 of the smooth surface and retaining ring 12 in the up-and-down motion process, simultaneously through actuating lever 8 for the round bar, not only be convenient for sealed, still reduced the flow area between valve gap 4 and the valve body 1 to the security of lifting means that can be great can prevent simultaneously because of the gas in the 1 inner chamber of valve body enters into the phenomenon of catching fire that the 4 inner chambers of valve gap arouse.

Wherein, case 9 is soft rubber, and the top outside of case 9 is equipped with the oblique angle, through setting up case 9 into soft rubber, it is more airtight when can make case 9 stop up valve body 1, and be equipped with the oblique angle through the top outside with case 9, the oblique angle corresponding with case 9 has been seted up to the inner wall of valve body 1 simultaneously, thereby make case 9 can not appear revealing the phenomenon when stopping up, be located the air inlet 2 department of 1 inner chamber of valve body through case 9 simultaneously, thereby make case 9 after the seal during the gas impact force that makes case 9 receive hug closely and die on valve body 1, thereby great assurance the seal of equipment.

Wherein, the outside fixed mounting of electromagnetism piece 7 has the coil that is used for the circular telegram, and the coil is the spiral form and installs in the outside of electromagnetism piece 7, can make through electromagnetism piece 7 and main magnet piece 6 produce repulsion, thereby accomplish opening and shutting of case 9 through electromagnetism piece 7, and break off electromagnetism piece 7 under the state of circular telegram, also can realize blocking valve body 1 through case 9, thereby make the break-make method in the control valve body 1 various, avoid leading to the unable phenomenon of opening and shutting of valve body 1 because of an action inefficacy.

Wherein, conduit 13 is the hollow cylinder hose, and the inner wall fixed mounting of hose has the wire, and the wire in conduit 13 respectively with electromagnetism piece 7 with accuse magnetism 5 fixed mounting of mechanism, can make outside detection device connect through the wire in conduit 13 to be convenient for control magnetism 5 and electromagnetism piece 7 and control.

Wherein, fixed magnetic block 11 is cylindrical permanent magnet, and the surface of fixed magnetic block 11 is offered the round hole that is used for the motion of actuating lever 8, be the permanent magnet through fixed magnetic block 11 with move magnetic block 10, and fixed magnetic block 11 is mutually with the magnetic force when moving magnetic block 10 installation, thereby make repulsion between them can carry out the up-and-down motion of electromagnetic block 7, the phenomenon of spring inefficacy when having avoided using the spring, and can make the repulsion can not change through fixed magnetic block 11 with moving magnetic block 10, and then great increase the life of equipment.

The working principle is as follows: when the valve is used, firstly, the air inlet 2 and the air outlet 3 at two ends of the valve body 1 are connected to proper positions, secondly, the electromagnetic block 7 and the magnetic control mechanism 5 are electrified through the conduit 13 and are repelled from the bottom end of the main magnetic block 6 through the top end of the electromagnetic block 7, so that the electromagnetic block 7 pushes the movable magnetic block 10 to apply pressure to the direction of the fixed magnetic block 11 (the movable magnetic block 10 is repelled from the fixed magnetic block 11), and the electromagnetic block 7 moves downwards to drive the driving rod 8 to push the valve core 9 down, and natural gas flows to the air outlet 3 from the direction of the air inlet 2;

leak detection in the energized state: firstly, detecting gas leakage through a detection device, then enabling the magnetic control mechanism 5 to act through the conduit 13, further enabling the magnetism of the main magnetic block 6 to be weakened through the magnetic control mechanism 5, finally jacking the movable magnetic block 10 through the fixed magnetic block 11, and closing a valve through the valve core 9;

when power is off: the magnetic force of the electromagnetic block 7 can be eliminated after the power failure, and meanwhile, the moving magnetic block 10 drives the valve core 9 to lift up through the repulsive force of the fixed magnetic block 11 to the moving magnetic block 10, so that the passage of the air inlet 2 and the passage of the air outlet 3 are blocked through the valve core 9, namely.

It is noted that, herein, relational terms such as first and second, and the like may be 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. Meanwhile, in the drawings of the invention, the filling pattern is only used for distinguishing the layers and is not limited at all.

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. The utility model provides a natural gas is solenoid valve for pipeline, includes valve body (1), its characterized in that: an air inlet (2) is formed in one end of the valve body (1), an air outlet (3) is formed in the other end of the valve body (1), a valve cover (4) fixedly installed through bolts is arranged on the surface of the valve body (1), a magnetism control mechanism (5) is fixedly installed on the inner wall of the valve cover (4), a main magnetic block (6) is fixedly installed at the top of the inner wall of the magnetism control mechanism (5), an electromagnetic block (7) is movably installed on the inner wall of the magnetism control mechanism (5), a driving rod (8) is fixedly installed in the middle of the bottom surface of the electromagnetic block (7), a valve core (9) is fixedly installed at the top end of the driving rod (8), a movable magnetic block (10) is fixedly installed at the bottom end of the electromagnetic block (7), a fixed magnetic block (11) is movably installed on the side wall of the driving rod (8), a retainer ring (12) is fixedly installed at the bottom end of the, and the top of the valve cover (4) is fixedly provided with a conduit (13).

2. The electromagnetic valve for a natural gas pipeline according to claim 1, wherein: the driving rod (8) is a cylindrical solid rod with a smooth surface.

3. The electromagnetic valve for a natural gas pipeline according to claim 1, wherein: the valve core (9) is made of soft rubber, and an oblique angle is arranged on the outer side of the top end of the valve core (9).

4. The electromagnetic valve for a natural gas pipeline according to claim 1, wherein: the outside fixed mounting of electromagnetism piece (7) has the coil that is used for circular telegram, and the coil is installed in the outside of electromagnetism piece (7) in the spiral form.

5. The electromagnetic valve for a natural gas pipeline according to claim 1, wherein: the wire conduit (13) is a hollow cylindrical hose, a wire is fixedly installed on the inner wall of the hose, and the wire in the wire conduit (13) is fixedly installed with the electromagnetic block (7) and the magnetic control mechanism (5) respectively.

6. The electromagnetic valve for a natural gas pipeline according to claim 1, wherein: the fixed magnetic block (11) is a cylindrical permanent magnet, and a round hole used for driving the driving rod (8) to move is formed in the surface of the fixed magnetic block (11).