Gas supply assembly of multi-stage rotational flow low-nitrogen combustor

Abstract

The utility model belongs to the field of gas supply assemblies, and particularly relates to a gas supply assembly of a multi-stage rotational flow low-nitrogen burner, which comprises a gas cylinder, a connecting cover is slidably connected to the upper end of the gas cylinder, a connecting pipe is fixedly connected to the inside of the connecting cover, and a fireproof cover is fixedly connected to one end, far away from the connecting cover, of the connecting pipe. The end, away from the connecting pipe, of the fireproof cover is fixedly connected with a combustor gas supply pipe, and a backfire prevention mechanism is arranged in the fireproof cover. The inclined plane clamping frame, the inclined plane ring, the connecting nail and other structures are additionally arranged on the outer side of the gas cylinder, in the using process, the inclined plane ring can be pushed through the elastic force of the first spring to drive the inclined plane clamping frame to be clamped to the outer side of the connecting cover, then the connecting cover can be limited, and when disassembly is needed, only the inclined plane ring needs to be separated from the inclined plane clamping frame, and disassembly is convenient. And therefore, the gas cylinder can be more convenient to replace.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas supply assembly technical field, concretely is a kind of gas supply assembly of multistage cyclone low-nitrogen burner. BACKGROUND

[0002] Multistage cyclone low-nitrogen burner is a kind of efficient, environmental protection combustion technology, is widely used in power station boiler, industrial boiler and gas turbine and other fields, aims at reducing the emission of nitrogen oxides (NOx), while maintaining higher combustion efficiency. Its core principle is to optimize the mixing process of fuel and air through multistage cyclone structure, realizes staged combustion, to inhibit the generation of NOx, in the process of burner work needs to be supplied by gas cylinder to burner, but gas cylinder needs to be replaced, gas cylinder is connected by thread, and the way of threaded connection can easily lead to over-tightening, so that the gas cylinder is not convenient to disassemble, and after the end of gas supply, flame is easy to enter the inside of gas cylinder, cause danger. Therefore, the prior art needs to be improved. SUMMARY

[0003] The utility model discloses a kind of gas supply assembly of multistage cyclone low-nitrogen burner, solve the problem that gas tank is not convenient to replace and is easy to backfire when combustion ends.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of gas supply assembly of multistage cyclone low-nitrogen burner, including gas cylinder, the upper end of the gas cylinder is slidably connected with connecting cover, the inside of the connecting cover is fixedly connected with connecting pipe, the end of the connecting pipe away from the connecting cover is fixedly connected with fire shield, the end of the fire shield away from the connecting pipe is fixedly connected with burner gas supply pipe, the inside of the fire shield is provided with anti-backfire mechanism, the bottle mouth outside of the gas cylinder is fixedly connected with two symmetrical distribution's hinged frame, the inside of the hinged frame is hingedly connected with inclined surface clamping frame, the outside upper portion of the gas cylinder is fixedly connected with support ring, the inside of the support ring is slidably connected with connecting nail, the upper end of the connecting nail is fixedly connected with inclined surface ring, the outside of the connecting nail is provided with spring one.

[0005] Preferably, the inclined surface clamping frame is connected with the connecting cover, the inclined surface clamping frame is in contact with the bottle mouth of the gas cylinder, and the inclined surface clamping frame can limit the connecting cover.

[0006] Preferably, the inclined surface ring is slidably connected with the inclined surface clamping frame, and the inclined surface ring is slidably connected with the gas cylinder, so that the inclined surface ring can support the inclined surface clamping frame through the inclined surface.

[0007] Preferably, one end of the spring one is fixedly connected with the support ring, and the other end of the spring one is fixedly connected with the inclined surface ring, so that the spring one can support the inclined surface ring through the elastic force.

[0008] Preferably, the backfire prevention mechanism includes a fixing strip, a fixing strip is fixedly connected to the left side of the inner wall of the fireproof cover, a guide pin is slidably connected inside the fixing strip, a sealing plug is fixedly connected to the end of the guide pin away from the fixing strip, a sealing ring is fixedly connected to the right side of the inner wall of the fireproof cover, the sealing ring is slidably connected to the sealing plug, and a spring is provided on the outside of the guide pin, so that the sealing plug can seal the fireproof cover through the sealing ring.

[0009] Preferably, one end of the second spring is fixedly connected to the fixing strip, and the other end of the second spring is fixedly connected to the sealing plug. The second spring can support the sealing plug through its elastic force.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model adds a beveled snap-fit ​​bracket, beveled ring, and connecting nail to the outside of the gas cylinder. During use, the spring force pushes the beveled ring to engage the beveled snap-fit ​​bracket with the outside of the connecting cover, thus limiting the connection cover. When disassembly is required, simply detach the beveled ring from the beveled snap-fit ​​bracket to release the limitation on the connecting cover, thereby making the gas cylinder easier to replace.

[0012] 2. This utility model adds a sealing plug, sealing ring and guide pin to the inside of the fireproof cover. When it is inflated, the air pressure can push the sealing plug to move. After the sealing plug moves, air can be supplied to the inside of the air supply pipe. After the air supply ends, the pressure drops and the spring drives the sealing plug to reset, so as to seal the fireproof cover and effectively prevent backfire. Attached Figure Description

[0013] Figure 1 This is a perspective view of the overall structure of this utility model;

[0014] Figure 2 For the present utility model Figure 1 A magnified 3D view of the local structure;

[0015] Figure 3 For the present utility model Figure 2 A magnified 3D view of the inclined ring;

[0016] Figure 4 For the present utility model Figure 2 A three-dimensional enlarged view of the inclined card holder;

[0017] Figure 5 For the present utility model Figure 1 Enlarged frontal sectional view of the fireproof cover.

[0018] In the figure: 1, gas cylinder; 2, connecting cover; 3, connecting pipe; 4, fireproof cover; 5, burner gas supply pipe; 6, anti-backfire mechanism; 7, hinged frame; 8, inclined surface clamping frame; 9, supporting ring; 10, connecting nail; 11, inclined surface ring; 12, spring I; 61, fixed strip; 62, guide nail; 63, sealing plug; 64, sealing ring; 65, spring II. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , a gas supply assembly of a multi-stage cyclone low-nitrogen burner, comprising a gas cylinder 1, the upper end of the gas cylinder 1 is slidably connected with a connecting cover 2, the inside of the connecting cover 2 is fixedly connected with a connecting pipe 3, the end of the connecting pipe 3 away from the connecting cover 2 is fixedly connected with a fireproof cover 4, the end of the fireproof cover 4 away from the connecting pipe 3 is fixedly connected with a burner gas supply pipe 5, the inside of the fireproof cover 4 is provided with an anti-backfire mechanism 6, the outside of the mouth of the gas cylinder 1 is fixedly connected with two symmetrical hinged frames 7, the inside of the hinged frame 7 is hingedly connected with an inclined surface clamping frame 8, the outside upper part of the gas cylinder 1 is fixedly connected with a supporting ring 9, the inside of the supporting ring 9 is slidably connected with a connecting nail 10, the upper end of the connecting nail 10 is fixedly connected with an inclined surface ring 11, the outside of the connecting nail 10 is provided with a spring I 12.

[0021] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , the inclined surface clamping frame 8 is clamped with the connecting cover 2, the inclined surface clamping frame 8 is in contact with the mouth of the gas cylinder 1, the inclined surface clamping frame 8 can limit the connecting cover 2, the inclined surface ring 11 is slidably connected with the inclined surface clamping frame 8, the inclined surface ring 11 is slidably connected with the gas cylinder 1, the inclined surface ring 11 can support the inclined surface clamping frame 8 through the inclined surface, one end of the spring I 12 is fixedly connected with the supporting ring 9, the other end of the spring I 12 is fixedly connected with the inclined surface ring 11, the spring I 12 can support the inclined surface ring 11 through the elastic force.

[0022] Please refer to Figure 1 , Figure 5The anti-backfire mechanism 6 comprises a fixed strip 61, the left part of the inner wall of the fire cover 4 is fixedly connected with the fixed strip 61, a guide nail 62 is slidably connected in the fixed strip 61, one end of the guide nail 62 away from the fixed strip 61 is fixedly connected with a sealing plug 63, the right part of the inner wall of the fire cover 4 is fixedly connected with a sealing ring 64, the sealing ring 64 is slidably connected with the sealing plug 63, a spring 2 is arranged on the outer side of the guide nail 62, the sealing plug 63 can seal the fire cover 4 through the sealing ring 64, one end of the spring 2 is fixedly connected with the fixed strip 61, the other end of the spring 2 is fixedly connected with the sealing plug 63, and the spring 2 can support the sealing plug 63 through the elastic force.

[0023] The specific implementation process of the utility model is as follows: when it is necessary to replace the gas cylinder 1, the inclined surface ring 11 is pushed downward, the inclined surface ring 11 compresses the spring 1, when the inclined surface ring 11 is separated from the inclined surface clamping frame 8, the limitation of the inclined surface clamping frame 8 is released, the inclined surface clamping frame 8 can be deflected, then when the inclined surface clamping frame 8 is separated from the connecting cover 2, the gas cylinder 1 can be disassembled, then the connecting cover 2 is inserted into the outside of the bottle mouth of the gas cylinder 1, the inclined surface ring 11 is loosened after stable insertion, the spring 1 is reset, the spring 1 can drive the inclined surface ring 11 to reset through the elastic force, the inclined surface ring 11 drives the inclined surface clamping frame 8 to overturn to the outside of the connecting cover 2 through the inclined surface of the inclined surface clamping frame 8, and the replacement of the gas cylinder 1 can be completed.

[0024] When the gas cylinder 1 supplies gas to the inside of the connecting pipe 3, when the pressure of the gas pressure is greater than the elastic force of the spring 2, the sealing plug 63 moves and compresses the spring 2, when the sealing plug 63 is separated from the sealing ring 64, the gas can flow into the inside of the burner gas supply pipe 5 through the fire cover 4, the burner can be supplied with gas, after the gas supply is completed, the pressure of the gas pressure is less than the elastic force of the spring 2, the spring 2 is reset, the spring 2 can drive the sealing plug 63 to slide into the inside of the sealing ring 64 through the elastic force, and the sealing of the fire cover 4 can be completed, and the flame can be effectively prevented from entering the inside of the gas cylinder 1.

[0025] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A gas supply assembly for a multi-stage cyclone low-NOx burner comprising a gas cylinder (1), characterised in that: The upper end of the gas cylinder (1) is slidably connected with a connecting cover (2), the inside of the connecting cover (2) is fixedly connected with a connecting pipe (3), the end of the connecting pipe (3) away from the connecting cover (2) is fixedly connected with a fireproof cover (4), the end of the fireproof cover (4) away from the connecting pipe (3) is fixedly connected with a burner gas supply pipe (5), the inside of the fireproof cover (4) is provided with an anti-backfire mechanism (6), the outside of the bottle mouth of the gas cylinder (1) is fixedly connected with two symmetrically distributed hinged frames (7), the inside of the hinged frame (7) is hingedly connected with a bevel clamping frame (8), the outside upper part of the gas cylinder (1) is fixedly connected with a supporting ring (9), the inside of the supporting ring (9) is slidably connected with a connecting nail (10), the upper end of the connecting nail (10) is fixedly connected with a bevel ring (11), the outside of the connecting nail (10) is provided with a spring (12).

2. A gas supply assembly for a multi-stage cyclone low-NOx burner according to claim 1, wherein: The bevel clamping frame (8) is clamped with the connecting cover (2), and the bevel clamping frame (8) is in contact with the bottle mouth of the gas cylinder (1).

3. A gas supply assembly for a multi-stage cyclone low-NOx burner according to claim 1, wherein: The bevel ring (11) is slidably connected with the bevel clamping frame (8), and the bevel ring (11) is slidably connected with the gas cylinder (1).

4. The gas supply assembly of a multi-stage cyclone low-NOx burner of claim 1, wherein: One end of the spring (12) is fixedly connected with the supporting ring (9), and the other end of the spring (12) is fixedly connected with the bevel ring (11).

5. A multi-stage cyclone low-NOx combustor gas supply assembly according to claim 1, wherein: The anti-backfire mechanism (6) comprises a fixed strip (61), the left part of the inner wall of the fireproof cover (4) is fixedly connected with the fixed strip (61), the inside of the fixed strip (61) is slidably connected with a guide nail (62), the end of the guide nail (62) away from the fixed strip (61) is fixedly connected with a sealing plug (63), the right part of the inner wall of the fireproof cover (4) is fixedly connected with a sealing ring (64), the sealing ring (64) is slidably connected with the sealing plug (63), and the outside of the guide nail (62) is provided with a spring (65).

6. A gas supply assembly for a multi-stage cyclone low-NOx burner according to claim 5, wherein: One end of the spring (65) is fixedly connected with the fixed strip (61), and the other end of the spring (65) is fixedly connected with the sealing plug (63).

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