CN215112740U

CN215112740U - Emergency ignition device for natural gas pipeline

Info

Publication number: CN215112740U
Application number: CN202121480222.XU
Authority: CN
Inventors: 汪洋; 高玥; 唐澜; 张剑; 蒋学宽
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-12-10
Anticipated expiration: 2031-06-30

Abstract

The utility model relates to an emergent ignition of natural gas line belongs to natural gas collection gas transmission technical field. The natural gas pipeline emergency ignition device comprises an unmanned aerial vehicle, an igniter and a connecting assembly; the unmanned aerial vehicle is provided with two fixed rods, and the igniter is provided with an installation part; the connecting assembly comprises a plurality of connecting pieces, the connecting pieces are divided into fixing pieces and moving pieces, the fixing pieces and the moving pieces are respectively matched with the two fixing rods, the fixing pieces are fixed on the installation portion, and the moving pieces are movably connected to the installation portion so that the distance between the fixing pieces and the moving pieces is adjustable. Carry the form of some firearm through unmanned aerial vehicle, can be by staff remote control unmanned aerial vehicle with some firearm deliver to the leakage point of natural gas collection gas transmission pipeline to control some firearm ignition, make the natural gas burning of leaking, eliminate the potential safety hazard that natural gas leaked, effectively ensure staff's personal safety. In addition, coupling assembling can adapt to two dead levers of different distances, and then adapts to the unmanned aerial vehicle of different models.

Description

Emergency ignition device for natural gas pipeline

Technical Field

The utility model belongs to the technical field of natural gas collection gas transmission, concretely relates to emergent ignition of natural gas line.

Background

Pipeline transportation is an important transportation industry in China and is also an important mode of natural gas transportation, the transportation safety of a natural gas collecting and transporting pipeline is very important, but the natural gas collecting and transporting pipeline is long, and is very easily influenced by various factors such as pipeline materials, construction factors, external force, corrosion and the like in the transportation process, so that the pipeline is damaged, pipeline leakage accidents occur, particularly sulfur-containing pipelines, the pipeline leakage can possibly cause personnel poisoning, and great potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the embodiments of the present invention is to provide a natural gas pipeline emergency ignition device, when a pipeline leakage occurs in a natural gas collecting and transporting pipeline in an open area, an operator can timely operate an unmanned aerial vehicle to carry an igniter to remotely ignite a leakage point, so as to timely ignite the leaked natural gas and eliminate the potential safety hazard of the sulfur-containing natural gas; in addition, coupling assembling's structure for some installation of some firearm and unmanned aerial vehicle is very convenient, and some firearm can install on the unmanned aerial vehicle of different models.

The embodiment of the utility model is realized like this:

the embodiment of the utility model provides a natural gas pipeline emergency ignition device, which is used for a natural gas collection and transmission pipeline, and comprises an unmanned aerial vehicle, an igniter and a connecting assembly; the unmanned aerial vehicle is provided with two fixing rods, and the igniter is provided with an installation part; coupling assembling includes a plurality of connecting pieces, a plurality of connecting pieces divide into two at least mountings and two at least moving parts, one of them is located to mounting detachable cover the dead lever just moving part detachable cup joints in another one the dead lever, the mounting is fixed in the installation department, moving part mobilizable connect in the installation department, so that the mounting with the interval of moving part is adjustable.

As an alternative to the above embodiment, a sliding groove is provided on the mounting portion, the sliding groove extends toward a direction away from the fixed member, and the movable member is slidably disposed in the sliding groove so as to enable the movable member to approach or separate from the fixed member.

As an alternative of the above embodiment, the connection assembly further includes an adjusting member matched with the moving member, the adjusting member is rotatably disposed on the mounting portion, the moving member is rotatably connected to the adjusting member, a center line of a rotating shaft of the adjusting member is parallel to a center line of a rotating shaft of the moving member, and a plane where center lines of the fixing rods are located is perpendicular to the center line of the rotating shaft of the adjusting member.

As the alternative of above-mentioned embodiment, coupling assembling still includes spacing seat, spacing seat is fixed in the installation department, spacing seat is cyclic annular, the regulating part coaxial set up in the spacing seat, the cross-section of spacing seat for L shape and with enclose into annular spacing groove between the installation department, the tip of regulating part inlays to be located spacing inslot just can follow the spacing groove motion.

As an alternative of the above embodiment, the connecting member includes a connecting seat and a retaining ring, the connecting seat and the retaining ring are provided with corresponding semi-cylindrical grooves, the connecting seat and the retaining ring are hinged to each other and locked by a locking member, and the semi-cylindrical grooves of the connecting seat and the retaining ring enclose a through hole for passing the fixing rod.

As an alternative of the above embodiment, a buckle plate is arranged on the buckle ring, a buckling hole is arranged on the buckle plate, the buckling hole has an opening end, and the locking member is arranged in the buckling hole in a penetrating manner and fixed to the connecting seat.

As an alternative to the above embodiment, the locking member is a bolt, and the locking member is threadedly engaged with the connecting seat.

As an alternative to the above embodiment, the cross section of the hooking hole is a major arc; the locking piece comprises a locking shaft, a locking catch and a locking spring; the locking shaft comprises a first section shaft and a second section shaft which are in stepped shaft shapes, the diameter of the first section shaft is smaller than the opening width of the buckling hole, the diameter of the second section shaft is larger than the opening width of the buckling hole and smaller than the diameter of the buckling hole, the first section shaft can slidably penetrate through the connecting seat along the center line of the first section shaft, and the second section shaft penetrates through the buckling hole; the locking stopper is fixed at one end of the first section of shaft, which is far away from the second section of shaft, the locking spring is sleeved on the first section of shaft, and two ends of the locking spring are respectively abutted against the connecting seat and the locking stopper, so that the second section of shaft has a tendency of moving towards the connecting seat; the locking piece has the spring extends just the second section axle wears to locate the first state in lock hole, and the locking spring compresses under the exogenic action, the second section axle breaks away from lock hole just the lock hole passes through first section axle breaks away from or the second state of locking axle is gone into to the card.

As an alternative to the above embodiment, the second section of shaft is provided with a threaded section, and the locking stopper is a nut, and the locking stopper is in threaded engagement with the threaded section.

As an alternative of the above embodiment, one end of the first section of shaft is provided with a hand-pulling portion, and the diameter of the hand-pulling portion is larger than that of the second section of shaft.

The utility model has the advantages that:

the utility model provides an emergent ignition of natural gas line carries the form of some firearms through unmanned aerial vehicle, will some firearms by staff remote control unmanned aerial vehicle and send the leakage point to natural gas collection gas transmission pipeline to control some firearms and ignite, make the natural gas burning of leaking, eliminate the potential safety hazard that natural gas leaked, the staff need not get into the leakage region, effectively ensures staff's personal safety. In addition, the distance between a plurality of connecting pieces of coupling assembling is adjustable, can adapt to two dead levers of different distances, and then can install some firearm on the unmanned aerial vehicle of different models, and it is convenient, application range is wide to install, operates more in a flexible way.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts. The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings. Like reference numerals refer to like parts throughout the drawings. The drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic structural diagram illustrating a natural gas pipeline emergency ignition device according to a first embodiment of the present invention;

FIG. 2 shows a partially enlarged schematic view of FIG. 1;

FIG. 3 is a schematic view showing the connection of the igniter and the connection assembly;

fig. 4 shows a schematic structural view of the connection assembly;

FIG. 5 shows a cross-sectional view of the connection assembly;

FIG. 6 is a schematic view showing the engagement of the movable member with the mounting portion;

figure 7 shows a cross-sectional view of the fixing;

FIG. 8 is a schematic view of the construction of the pinch plate;

fig. 9 is a schematic structural diagram illustrating a natural gas pipeline emergency ignition device according to a second embodiment of the present invention;

FIG. 10 shows an enlarged partial schematic view of FIG. 9;

FIG. 11 is a schematic view showing the connection of the igniter and the connection assembly;

FIG. 12 shows a schematic view of one of the views of the linkage assembly;

fig. 13 shows a schematic view of another perspective of the connecting assembly;

fig. 14 shows a cross-sectional view of the connection assembly;

FIG. 15 shows a top view of FIG. 13;

FIG. 16 is a schematic view of the moveable member of FIG. 14 shown in an actuated configuration;

FIG. 17 is a schematic view of the construction of the pinch plate;

figure 18 shows a cross-sectional view of the fixture.

Icon:

10-natural gas pipeline emergency ignition device;

11-unmanned aerial vehicle; 12-an igniter; 13-a connecting assembly;

110-a fixing bar; 120-a mounting portion; 130-a connector; 131-a fixing member; 132-a movable member; 133-a chute; 134-an adjustment member; 135-a limiting seat; 136-a limit groove; 140-a connecting seat; 141-a retaining ring; 142-a locking element; 143-drilling holes; 144-a buckle plate; 145-snap-fit hole; 150-locking the shaft; 151-a locking stop; 152-a locking spring; 153-first section axis; 154-second section shaft; 155-hand pulling part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

First embodiment

Referring to fig. 1, a first embodiment of the present invention provides an emergency ignition device 10 for a natural gas pipeline, which is used for igniting natural gas at a leakage point of a pipeline in an emergency.

It should be noted that the emergency ignition device 10 for a natural gas pipeline provided in this embodiment is applied to a natural gas collecting and transporting pipeline in an open area, and is not suitable for urban natural gas transportation, because a leakage point of the natural gas collecting and transporting pipeline is located in a relatively open area, the leakage point of the natural gas collecting and transporting pipeline is ignited, so that explosion (referring to pipeline ignition in natural gas exploitation) does not occur, and effective verification is already obtained in an actual production process of petroleum.

Specifically, the natural gas pipeline emergency ignition device 10 comprises an unmanned aerial vehicle 11, an igniter 12 and a connecting assembly 13.

The structure of both the drone 11 and the igniter 12 can be referred to the prior art and will not be described in detail here.

In this embodiment, the unmanned aerial vehicle 11 adopts the big M600 model of jiang, and the unmanned aerial vehicle 11 includes constitutions such as fuselage, wing, supporting leg and camera, wherein, please refer to fig. 2 and show, and the fuselage bottom of unmanned aerial vehicle 11 is provided with two dead levers 110, and two dead levers 110 can be parallel to each other.

The igniter 12 is of an oil injection type and mainly comprises two parts: an oil injection system and an ignition system.

Referring to fig. 3, the igniter 12 is provided with a mounting portion 120 at the top thereof, and the mounting portion 120 may have a plate-like structure.

The mounting part 120 of the igniter 12 and the fixing rod 110 of the unmanned aerial vehicle 11 are fixedly connected through the connecting component 13.

Referring to fig. 4 and 5, the connecting assembly 13 has the following specific structure: the connecting assembly 13 includes a plurality of connecting members 130, and in the present embodiment, the number of the connecting assemblies 13 is four.

The four connecting members 130 are divided into two fixed members 131 and two movable members 132.

Two mounting 131 correspond with one of them dead lever 110, and two moving parts 132 correspond with another dead lever 110, and dead lever 110 is located to the equal detachable cover of mounting 131 and moving part 132 to realize being connected of coupling assembling 13 and unmanned aerial vehicle 11.

The igniter 12 is fixed to the connecting assembly 13, specifically, the fixed element 131 is fixed to the mounting portion 120, and the movable element 132 is movably connected to the mounting portion 120, so that the distance between the fixed element 131 and the movable element 132 is adjustable.

The portion of the fixing element 131 for sleeving the fixing rod 110 is defined as a first fixing portion, the portion of the moving element 132 for sleeving the fixing rod 110 is defined as a second fixing portion, the center lines of the first fixing portions of the two fixing elements 131 are overlapped, and the center lines of the second fixing portions of the two moving elements 132 are overlapped (of course, the overlapping is in an installation state, because the moving element 132 is movable, the activities of the two moving elements 132 are not necessarily performed synchronously, but after the two moving elements are installed on the same fixing rod 110, the center lines of the two moving elements 132 are overlapped), and the distance between the fixing element 131 and the moving element 132 can be regarded as the distance between the center line of the first fixing portion and the center line of the second fixing portion.

The structure for realizing the above functions is various, and in this embodiment, the following scheme is provided: the mounting portion 120 is provided with a sliding groove 133, the sliding groove 133 extends toward a direction away from the fixed member 131, and the movable member 132 is slidably disposed in the sliding groove 133, so that the movable member 132 can approach or leave the fixed member 131.

Referring to fig. 6, the sliding groove 133 may be a T-shaped groove, and the bottom of the movable member 132 is provided with a sliding block, which has a T-shaped cross section.

In addition, the connection manner of the connection element 130 and the fixing rod 110 is detachable, specifically, as shown in fig. 7, the connection element 130 includes a connection base 140 and a retaining ring 141, wherein the connection base 140 of the fixing element 131 and the mounting portion 120 can be fixed by a bolt, and the connection base 140 of the movable element 132 and the mounting portion 120 can be movably matched.

The connecting seat 140 and the retaining ring 141 are provided with corresponding semi-cylindrical grooves, the connecting seat 140 and the retaining ring 141 are hinged to each other and locked by the locking member 142, the semi-cylindrical grooves of the connecting seat 140 and the retaining ring 141 are enclosed to form a through hole 143, and the fixing rod 110 can be inserted into the through hole 143.

The structure of the locking member 142 is not limited, in this embodiment, the locking member 142 is a bolt, the locking member 142 is in threaded engagement with the connecting seat 140, and when the locking member 142 is completely screwed, the locking member 142 presses the buckle plate 144 tightly against the connecting seat 140.

By screwing the locking piece 142, the buckle plate 144 can be fixed or the buckle plate 144 can be disassembled, so that the retaining ring 141 is closed or opened, the connecting piece 130 can be disassembled quickly, and the structure is simple and the operation is convenient.

Referring to fig. 8, the buckle plate 144 is disposed on the buckle ring 141, the buckle plate 144 is disposed with a buckling hole 145, the buckling hole 145 has an opening end, and the locking member 142 is disposed through the buckling hole 145 and fixed to the connecting seat 140. In the present embodiment, the opening width of the fastening hole 145 is substantially equal to the diameter of the fastening hole 145.

And is hooked to the open end of the hole 145 so that the locking member 142 can be closed or opened without being completely unscrewed.

Second embodiment

Referring to fig. 9 to 11, a second embodiment of the present invention provides a natural gas pipeline emergency ignition device 10, which is an improvement of the first embodiment. Compared with the first embodiment, the difference of this embodiment lies in the moving manner of the movable member 132 and the locking manner of the buckle plate 144, and other parts not mentioned, please refer to the first embodiment, which includes the following details:

referring to fig. 12-14, in the present embodiment, the connecting assembly 13 further includes an adjusting element 134 matching with the movable element 132.

The adjusting piece 134 can adopt a bar-shaped swing arm structure, the adjusting piece 134 is rotatably arranged on the mounting portion 120, specifically, one end of the adjusting piece 134 is provided with a rotating shaft, the rotating shaft penetrates through the mounting portion 120, and the adjusting piece 134 can rotate around the central line of the rotating shaft.

The movable member 132 is rotatably connected to the adjusting member 134, and a bottom of the movable member 132 has a rotating shaft passing through the adjusting member 134.

The central line of the rotating shaft of the adjusting element 134 is parallel to the central line of the rotating shaft of the movable element 132, and the plane of the central lines of the two fixed rods 110 is perpendicular to the central line of the rotating shaft of the adjusting element 134.

In the rotating process of the adjusting element 134, the adjusting element 134 and the moving element 132 can be driven to rotate integrally, even if the moving element 132 revolves around the rotating shaft center line of the adjusting element 134, meanwhile, the moving element 132 can rotate around the rotating shaft center line of itself, that is, the moving element 132 rotates, and the center line of the through hole 143 of the moving element 132 can be always parallel to the center line of the through hole 143 of the fixed element 131.

In addition, since only one end of the adjusting member 134 is limited in rotation, which may cause the other end of the adjusting member 134 to be unstable, in this embodiment, the connecting assembly 13 further includes a stopper seat 135.

As shown in fig. 15, the limiting seat 135 is fixed to the mounting portion 120, the limiting seat 135 is annular, the adjusting element 134 is coaxially disposed in the limiting seat 135, the cross section of the limiting seat 135 is L-shaped, an annular limiting groove 136 is defined between the limiting seat 135 and the mounting portion 120, and an end of the adjusting element 134 is embedded in the limiting groove 136 and can move along the limiting groove 136.

The movable member 132 is shown in the activated state with reference to fig. 16.

The locking mode of the pinch plate 144 adopts the following scheme but is not limited to the following scheme: referring to fig. 17, the cross-section of the hooking hole 145 is a major arc, i.e., the diameter of the hooking hole 145 is larger than the width of the opening of the hooking hole 145.

Referring to fig. 18, the locking member 142 includes a locking shaft 150, a locking stopper 151 and a locking spring 152.

The lock shaft 150 includes a first shaft section 153 and a second shaft section 154, and the first shaft section 153 and the second shaft section 154 are provided in a stepped shaft shape.

Wherein, the diameter of the first section axle 153 is smaller than the opening width of the fastening hole 145, the diameter of the second section axle 154 is larger than the opening width of the fastening hole 145 and smaller than the diameter of the fastening hole 145, in principle, the diameter of the second section axle 154 is substantially equal to the diameter of the fastening hole 145, the opening width of the fastening hole 145 is preferably one third to two thirds of the fastening hole 145, this arrangement can ensure that the second section axle 154 can not be separated from the fastening hole 145 through the opening of the fastening hole 145, and the first section axle 153 can be separated from the fastening hole 145 through the opening of the fastening hole 145.

The first section shaft 153 is slidably disposed through the connecting seat 140 along a center line thereof, and the second section shaft 154 is disposed through the engaging hole 145.

The locking stopper 151 is fixed to one end of the first section shaft 153, the locking stopper 151 and the second section shaft 154 are located at two sides of the connecting seat 140, the locking spring 152 is sleeved on the first section shaft 153, and two ends of the locking spring 152 are respectively abutted against the connecting seat 140 and the locking stopper 151, so that the second section shaft 154 has a tendency of moving towards the connecting seat 140.

The locking member 142 has a first state and a second state, wherein the first state is that the spring is extended and the second shaft 154 is inserted into the engaging hole 145, and the second state is that the locking spring 152 is compressed by an external force, the second shaft 154 is separated from the engaging hole 145, and the engaging hole 145 is separated from or locked into the locking shaft 150 through the first shaft 153.

In order to achieve the above effect, it is necessary to ensure that the length of the locking shaft 150 and the length of the second-stage shaft 154 are appropriate, so that when the locking spring 152 is compressed under the action of the preset external force threshold, the second-stage shaft 154 can be displaced to a position that does not affect the rotation of the retaining ring 141.

In order to effectively adjust the pre-tightening force of the locking spring 152, the displacement length of the locking shaft 150 and facilitate the assembly and disassembly of the locking member 142, a threaded section is provided on the second shaft section 154, the locking stopper 151 is a nut, and the locking stopper 151 is in threaded engagement with the threaded section.

One end of the first section shaft 153 is provided with a hand pulling portion 155, and the diameter of the hand pulling portion 155 is larger than that of the second section shaft 154.

The locking member 142 operates as follows:

during installation, a worker pulls the hand-pulling portion 155 to enable the locking shaft 150 to move along the center line of the locking shaft, at the moment, the locking spring 152 is gradually compressed, a certain distance exists between the second section of shaft 154 and the connecting seat 140, the snap ring 141 is rotated to enable the opening of the snap hole 145 in the snap plate 144 to pass through the first section of shaft 153 to reach a designated position, the snap plate 144 is attached to the connecting seat 140, then the hand-pulling portion 155 is loosened, the locking shaft 150 returns to the original position under the action of the locking spring 152 to drive the locking shaft 150 to move along the center line of the locking shaft 150, the second section of shaft 154 is arranged in the snap hole 145 in a penetrating mode, the snap ring 141 cannot rotate, and therefore the snap ring 141 is fixed, even if the snap ring 141 tends to rotate relative to the connecting seat 140 under the action of gravity of the igniter 12, the snap plate 144 can only be clamped to the second section of shaft 154 and cannot fall off.

When the locking shaft 150 is detached, the worker pulls the hand pulling portion 155 to move the locking shaft 150 along the center line of the locking shaft, the locking spring 152 is gradually compressed, the second section of shaft 154 is separated from the buckling hole 145, a certain distance exists between the second section of shaft 154 and the connecting seat 140, the buckle ring 141 is rotated to enable the opening of the buckling hole 145 in the buckle plate 144 to pass through the first section of shaft 153 to be separated from the locking shaft 150, then the hand pulling portion 155 is released, and the locking shaft 150 returns to the original position under the action of the locking spring 152.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A natural gas pipeline emergency ignition device is used for a natural gas collection and transmission pipeline and is characterized by comprising an unmanned aerial vehicle, an igniter and a connecting assembly; the unmanned aerial vehicle is provided with two fixing rods, and the igniter is provided with an installation part; coupling assembling includes a plurality of connecting pieces, a plurality of connecting pieces divide into two at least mountings and two at least moving parts, one of them is located to mounting detachable cover the dead lever just moving part detachable cup joints in another one the dead lever, the mounting is fixed in the installation department, moving part mobilizable connect in the installation department, so that the mounting with the interval of moving part is adjustable.

2. The natural gas pipeline emergency ignition device of claim 1, wherein the mounting portion is provided with a sliding groove, the sliding groove extends towards a direction away from the fixed member, and the movable member is slidably disposed in the sliding groove so as to enable the movable member to approach or depart from the fixed member.

3. The emergency ignition device for natural gas pipelines according to claim 1, wherein the connecting assembly further comprises an adjusting member matched with the moving member, the adjusting member is rotatably arranged on the mounting portion, the moving member is rotatably connected to the adjusting member, a central line of a rotating shaft of the adjusting member is parallel to a central line of a rotating shaft of the moving member, and a plane where central lines of the two fixing rods are located is perpendicular to the central line of the rotating shaft of the adjusting member.

4. The natural gas pipeline emergency ignition device of claim 3, wherein the connection assembly further comprises a limiting seat, the limiting seat is fixed to the mounting portion, the limiting seat is annular, the adjusting piece is coaxially arranged in the limiting seat, the cross section of the limiting seat is L-shaped, an annular limiting groove is formed between the L-shaped limiting seat and the mounting portion in a surrounding mode, and the end portion of the adjusting piece is embedded in the limiting groove and can move along the limiting groove.

5. The emergency ignition device for natural gas pipelines according to any one of claims 1 to 4, wherein the connecting piece comprises a connecting seat and a retaining ring, the connecting seat and the retaining ring are provided with corresponding semi-cylindrical grooves, the connecting seat and the retaining ring are hinged with each other and locked by a locking piece, and the semi-cylindrical grooves of the connecting seat and the retaining ring enclose a through hole for the fixing rod to pass through.

6. The emergency ignition device for natural gas pipelines according to claim 5, wherein a buckle plate is arranged on the buckle ring, a buckling hole is arranged on the buckle plate, the buckling hole has an opening end, and the locking piece is arranged through the buckling hole and fixed with the connecting seat.

7. The natural gas pipeline emergency ignition device of claim 6, wherein the locking element is a bolt, and the locking element is in threaded engagement with the connecting seat.

8. The natural gas pipeline emergency ignition device of claim 6, wherein the cross section of the buckling hole is a major arc; the locking piece comprises a locking shaft, a locking catch and a locking spring; the locking shaft comprises a first section shaft and a second section shaft which are in stepped shaft shapes, the diameter of the first section shaft is smaller than the opening width of the buckling hole, the diameter of the second section shaft is larger than the opening width of the buckling hole and smaller than the diameter of the buckling hole, the first section shaft can slidably penetrate through the connecting seat along the center line of the first section shaft, and the second section shaft penetrates through the buckling hole; the locking stopper is fixed at one end of the first section of shaft, which is far away from the second section of shaft, the locking spring is sleeved on the first section of shaft, and two ends of the locking spring are respectively abutted against the connecting seat and the locking stopper, so that the second section of shaft has a tendency of moving towards the connecting seat; the locking piece has the spring extends just the second section axle wears to locate the first state in lock hole, and the locking spring compresses under the exogenic action, the second section axle breaks away from lock hole just the lock hole passes through first section axle breaks away from or the second state of locking axle is gone into to the card.

9. The emergency ignition device for natural gas pipelines according to claim 8, wherein the second section of shaft is provided with a threaded section, the locking stopper is a nut, and the locking stopper is in threaded engagement with the threaded section.

10. The natural gas pipeline emergency ignition device of claim 9, wherein one end of the first section of shaft is provided with a hand pulling portion, and the diameter of the hand pulling portion is larger than that of the second section of shaft.