Automatic ignition liquefied gas flame gun for corrosion prevention of natural gas pipeline

Abstract

The utility model relates to the technical field of flame guns, and discloses an automatic ignition liquefied gas flame gun for corrosion prevention of a natural gas pipeline, which comprises a nozzle, a stainless steel gun barrel is arranged at one end of the nozzle, an adjusting valve is arranged at one end of the stainless steel gun barrel, and a handle is arranged at one end of the adjusting valve far away from the stainless steel gun barrel. The adjusting valve is further provided with a gas guide pipe, the stainless steel gun barrel is further provided with an electronic ignition switch, one end of the electronic ignition switch is provided with a wire, and the wire is connected with the nozzle. Under the action of the protection mechanism, the movable sleeve is used for protecting the nozzle, and the cooling liquid ring arranged in the movable sleeve can quickly cool the nozzle. And therefore, the situation that the nozzle is exposed outside and scalds or corrodes other objects is reduced, and the practicability and the safety of the device are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of flamethrowers, in particular to an automatic ignition liquefied gas flamethrower for natural gas pipeline corrosion protection. Background Art

[0002] An automatic ignition liquefied gas flame spray gun for natural gas pipeline corrosion protection is a heating or welding tool that combines liquefied gas as fuel and automatic ignition function. This flame spray gun has a series of advantages, such as easy operation, safety and reliability, no pollution, stable performance, etc.

[0003] In the process of corrosion protection of long-distance pipeline welds, liquefied gas flamethrowers often need to be ignited manually, and the nozzles are generally made of stainless steel. This will cause the nozzles to be very hot, and if you accidentally touch them, you will get burned. If you place it in a nearby location, the high temperature of the nozzles may also corrode some items. Utility Model Content

[0004] In order to solve the technical problem that the nozzle is in a high temperature state after use, which may easily cause burns or corrosion to objects, the utility model provides an automatic ignition liquefied gas flame spray gun for natural gas pipeline corrosion protection.

[0005] The utility model adopts the following technical scheme to realize: an automatic ignition liquefied gas flame spray gun for natural gas pipeline corrosion protection.

[0006] It comprises a nozzle, one end of the nozzle is provided with a stainless steel barrel, one end of the stainless steel barrel is provided with a regulating valve, one end of the regulating valve away from the stainless steel barrel is provided with a grip, an air guide tube is also provided on the regulating valve, an electronic ignition switch is also provided on the stainless steel barrel, one end of the electronic ignition switch is provided with a wire, and the wire is connected to the nozzle;

[0007] The protective mechanism comprises a fixed sleeve, a high-elastic flame-retardant cloth, a movable sleeve, a snap-fit ​​unit 1 and a snap-fit ​​unit 2. The fixed sleeve is fixed on the stainless steel gun barrel and is located next to the nozzle. One end of the high-elastic flame-retardant cloth is fixed on the fixed sleeve, and the other end of the high-elastic flame-retardant cloth is fixed on the movable sleeve. The movable sleeve is arranged on the stainless steel gun barrel through the snap-fit ​​unit 1.

[0008] Through the above technical solution, the nozzle can be wrapped with a movable sleeve under the action of the protective mechanism, which can prevent the nozzle from directly contacting the object, and a coolant ring is provided inside the movable sleeve. The nozzle can be cooled to a greater extent, thereby achieving a protective effect. In addition, a high-elastic flame-retardant cloth is provided between the fixed sleeve and the movable sleeve to protect the stainless steel barrel at the connection with the nozzle to a certain extent, avoiding burns caused by direct touch.

[0009] As a further improvement of the above scheme, the engaging unit 1 includes a circular plate, a spring groove, a spring, a movable block, a ball, a ball groove and a sliding unit, the circular plate is fixed on the stainless steel gun barrel, a plurality of the spring grooves are opened on the circular plate, one end of the spring is welded to the spring groove, and the other end of the spring is welded to one end of the movable block, the ball is rolled and embedded in the other end of the movable block, a plurality of the ball grooves are opened in the movable sleeve, and the balls are all in contact with the ball grooves.

[0010] Through the above technical solution, the ball is given a pressure under the elastic potential energy of the spring, so that the ball can be stuck in the ball groove, and the position of the movable sleeve is simply limited, ensuring that the movable sleeve will not affect the normal operation of the nozzle.

[0011] As a further improvement of the above solution, the sliding unit includes a slider and a slide groove, the slide grooves are both opened at both ends of the spring groove, the two sliders are both fixed at both ends of the movable block, and the slider slides on the slide groove.

[0012] Through the above technical solution, when the ball is pressed into the spring groove through the inner wall of the movable sleeve, the slider slides on the slide groove, which can ensure the stability of the ball movement to a certain extent, so that the ball can be stably stuck in the ball groove.

[0013] As a further improvement of the above solution, the wire sleeve is in contact with the wire, and the wire sleeve is arranged outside the stainless steel gun barrel.

[0014] Through the above technical solution, the position of the wire can be limited by setting the wire cover, and then the wire can be protected.

[0015] As a further improvement of the above scheme, the second locking unit includes a slide rail, a slot, an arc block and an insertion rod. The two slide rails are symmetrically opened on the nozzle, the slot is opened in the slide rail, the two arc blocks are fixed in the movable sleeve, the insertion rod is fixed on the side of the arc block close to the outside of the movable sleeve, and the insertion rod can be inserted in the slot.

[0016] Through the above technical solution, by providing a slide rail on the outside of the nozzle and an arc block inside the movable sleeve, the movable sleeve can be easily moved outside the nozzle to quickly complete the protection and cooling work of the nozzle. In addition, the insertion rod can be inserted into the card slot, so that the movable sleeve can be stably mounted on the nozzle to a certain extent.

[0017] As a further improvement of the above solution, the outer axial part of the movable sleeve is provided with a plurality of arc-shaped grooves, and anti-slip grooves are provided in the arc-shaped grooves.

[0018] Through the above technical solution, the setting of the arc groove can facilitate workers to move the movable sleeve, and the setting of the anti-slip pattern can enhance the friction force to avoid slipping.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The utility model uses a movable sleeve to protect the nozzle under the action of the protection mechanism, and the cooling liquid ring arranged inside the movable sleeve can quickly cool the nozzle, thereby reducing the situation where the nozzle is exposed to the outside and causes burns or corrosion to other objects, thereby enhancing the practicality and safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of an automatic ignition liquefied gas flame spray gun for natural gas pipeline corrosion protection provided in Example 1 of the utility model;

[0022] Figure 2 It is a schematic diagram of the front view of the cross-sectional structure of an automatic ignition liquefied gas flamethrower for natural gas pipeline corrosion protection;

[0023] Figure 3 It is a three-dimensional structural diagram of a protective mechanism of an automatic ignition liquefied gas flamethrower for natural gas pipeline corrosion protection;

[0024] Figure 4 An automatic ignition liquefied gas flame spray gun for natural gas pipeline corrosion protection Figure 2 The structural diagram at A in the middle;

[0025] Figure 5 An automatic ignition liquefied gas flame spray gun for natural gas pipeline corrosion protection Figure 2 Schematic diagram of the structure at B in the figure.

[0026] Description of main symbols:

[0027] 1. Nozzle; 2. Stainless steel barrel; 3. Wire sleeve; 4. Wire; 5. Electronic ignition switch; 6. Regulating valve; 7. Gas pipe; 8. Grip; 9. Fixed sleeve; 10. High elastic flame retardant cloth; 11. Movable sleeve; 12. Arc groove; 13. Coolant ring; 14. Slide rail; 15. Slot; 16. Round plate; 17. Spring groove; 18. Spring; 19. Movable block; 20. Ball; 21. Ball groove; 22. Slider; 23. Slide; 24. Arc block; 25. Rod. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0029] Embodiment 1:

[0030] Please combine Figure 1-5 The embodiment of the invention is an automatic ignition liquefied gas flame spray gun for natural gas pipeline corrosion protection, comprising:

[0031] A nozzle 1, one end of the nozzle 1 is provided with a stainless steel barrel 2, one end of the stainless steel barrel 2 is provided with a regulating valve 6, one end of the regulating valve 6 away from the stainless steel barrel 2 is provided with a grip 8, the regulating valve 6 is also provided with a gas guide tube 7, the stainless steel barrel 2 is also provided with an electronic ignition switch 5, one end of the electronic ignition switch 5 is provided with a wire 4, and the wire 4 is connected to the nozzle 1;

[0032] The protection mechanism includes a fixed sleeve 9, a high-elastic flame-retardant cloth 10, a movable sleeve 11, a snap-fit ​​unit 1 and a snap-fit ​​unit 2. The fixed sleeve 9 is fixed on the stainless steel gun barrel 2 and is located next to the nozzle 1. One end of the high-elastic flame-retardant cloth 10 is fixed on the fixed sleeve 9, and the other end of the high-elastic flame-retardant cloth 10 is fixed on the movable sleeve 11. The movable sleeve 11 is arranged on the stainless steel gun barrel 2 through the snap-fit ​​unit 1.

[0033] The first engaging unit includes a circular plate 16, a spring groove 17, a spring 18, a movable block 19, a ball 20, a ball groove 21 and a sliding unit. The circular plate 16 is fixed on the stainless steel barrel 2. Multiple spring grooves 17 are opened on the circular plate 16. One end of the spring 18 is welded to the spring groove 17, and the other end of the spring 18 is welded to one end of the movable block 19. The ball 20 is rolled and embedded in the other end of the movable block 19. Multiple ball grooves 21 are opened in the movable sleeve 11, and the balls 20 are all in contact with the ball grooves 21.

[0034] The sliding unit includes a slider 22 and a slide groove 23 . The slide grooves 23 are both provided at two ends of the spring groove 17 . The two sliders 22 are both fixed at two ends of the movable block 19 . The sliders 22 slide on the slide grooves 23 .

[0035] The wire sleeve 3 is in contact with the wire 4 , and the wire sleeve 3 is sleeved outside the stainless steel gun barrel 2 .

[0036] The implementation principle of an automatic ignition liquefied gas flamethrower for natural gas pipeline corrosion protection in the embodiment of the present application is as follows: first, connect the gas pipe 7 and the liquefied gas tank, hold the handle 8 and press the electronic ignition switch 5 to ignite the top of the nozzle 1. At this time, the nozzle 1 has formed a flame, and the nozzle 1 can be used after releasing the electronic ignition switch 5. The size of the nozzle 1 flame is controlled by rotating the regulating valve 6. After use, the regulating valve 6 is closed to cut off the delivery of liquefied gas from the gas pipe 7. This makes it impossible for the nozzle 1 to emit fire, and then pinch the arc groove 12 and push the arc groove 12 toward the nozzle 1. The ball groove 21 moves from the ball 20, and the ball 20 fits on the inner wall of the movable sleeve 11, and the spring 18 is compressed at the same time, and the slider 22 slides on the slide groove 23 in the direction of the spring 18. With the continuous movement of the movable sleeve 11, the ball 20 continues to roll on the movable sleeve 11, stretching the high-elastic flame-retardant cloth 10. When the high-elastic flame-retardant cloth 10 is located above the ball 20, the ball 20 is driven back to its original position and does not roll under the rebound potential energy of the spring 18. Pinch the movable sleeve 11 to move it closer to the nozzle 1, so that the arc block 24 slides on the slide rail 14, the movable sleeve 11 gradually covers the nozzle 1, and the insertion rod 25 is inserted into the slot 15 to complete the fixing of the movable sleeve 11. At this time, the high-elastic flame-retardant cloth 10 is also in a tight state. Because the movable sleeve 11 fits the coolant ring 13, the heat dissipated by the nozzle 1 will be absorbed by the coolant ring 13, so that the nozzle 1 can be cooled quickly. At the same time, the provision of the movable sleeve 11 can prevent the nozzle 1 from being located outside, thereby reducing the possibility of being scalded.

[0037] When the nozzle 1 needs to be used again, the movable sleeve 11 is pinched again to drive the movable sleeve 11 gradually away from the nozzle 1. When the inner wall of the movable sleeve 11 contacts the movable sleeve 11, the ball 20 is pressed into the spring groove 17 again, and the spring 18 is compressed until the ball 20 is stuck in the ball groove 21. The position of the movable sleeve 11 can be further fixed, thereby not affecting the reuse of the nozzle 1.

[0038] Embodiment 2:

[0039] Combination Figure 1-5 Based on the first embodiment, the present embodiment is further improved in that: the engaging unit 2 includes a slide rail 14, a slot 15, an arc block 24 and an insertion rod 25, the two slide rails 14 are symmetrically arranged on the nozzle 1, the slot 15 is arranged in the slide rail 14, the two arc blocks 24 are fixed in the movable sleeve 11, the insertion rod 25 is fixed on the side of the arc block 24 close to the outside of the movable sleeve 11, and the insertion rod 25 can be inserted in the slot 15.

[0040] The movable sleeve 11 has a plurality of arc-shaped grooves 12 axially disposed on its exterior, and anti-slip grooves are disposed in the arc-shaped grooves 12 .

[0041] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An automatic ignition liquefied gas flame spray gun for natural gas pipeline corrosion protection, characterized in that: include: A nozzle, one end of the nozzle is provided with a stainless steel barrel, one end of the stainless steel barrel is provided with a regulating valve, one end of the regulating valve away from the stainless steel barrel is provided with a grip, an air guide tube is also provided on the regulating valve, an electronic ignition switch is also provided on the stainless steel barrel, one end of the electronic ignition switch is provided with a wire, and the wire is connected to the nozzle; A protection mechanism, the protection mechanism includes a fixed sleeve, a high-elastic flame-retardant cloth, a movable sleeve, a coolant ring, a clamping unit 1 and a clamping unit 2, the fixed sleeve is fixed on the stainless steel barrel and is located next to the nozzle, one end of the high-elastic flame-retardant cloth is fixed on the fixed sleeve, and the other end of the high-elastic flame-retardant cloth is fixed on the movable sleeve, the movable sleeve is arranged on the stainless steel barrel through the clamping unit 1, and the coolant ring is arranged in the movable sleeve.

2. The automatic ignition liquefied gas flame spray gun for natural gas pipeline corrosion protection as claimed in claim 1, characterized in that: The engaging unit 1 includes a circular plate, a spring groove, a spring, a movable block, a ball, a ball groove and a sliding unit. The circular plate is fixed on the stainless steel barrel. A plurality of spring grooves are provided on the circular plate. One end of the spring is welded to the spring groove, and the other end of the spring is welded to one end of the movable block. The ball is rolled and embedded in the other end of the movable block. A plurality of ball grooves are provided in the movable sleeve, and the balls are in contact with the ball grooves.

3. The automatic ignition liquefied gas flame spray gun for natural gas pipeline corrosion protection as claimed in claim 2, characterized in that: The sliding unit comprises a slider and a slide groove, the slide grooves are both arranged at the two ends of the spring groove, the two sliders are both fixed at the two ends of the movable block, and the sliders slide on the slide grooves.

4. The automatic ignition liquefied gas flame spray gun for natural gas pipeline corrosion protection as claimed in claim 2, characterized in that: The second engaging unit includes a slide rail, a slot, an arc block and an insertion rod. The two slide rails are symmetrically arranged on the nozzle, the slot is arranged in the slide rail, the two arc blocks are fixed in the movable sleeve, the insertion rod is fixed on one side of the arc block close to the outside of the movable sleeve, and the insertion rod can be inserted in the slot.

5. The automatic ignition liquefied gas flame spray gun for natural gas pipeline corrosion protection as claimed in claim 1, characterized in that: The movable sleeve is provided with a plurality of arc grooves in the axial direction on the outside, and anti-slip grooves are arranged in the arc grooves.

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