CN220017363U

CN220017363U - Combustion chamber gas premixing device

Info

Publication number: CN220017363U
Application number: CN202320476197.0U
Authority: CN
Inventors: 庄礼华
Original assignee: Bohui Thermal Equipment Co ltd
Current assignee: Bohui Thermal Equipment Co ltd
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-11-14
Anticipated expiration: 2033-03-14

Abstract

The utility model provides a combustion chamber gas premixing device, and belongs to the field of machinery. The gas mixing device solves the problems that the existing gas mixing device has good gas mixing effect and high cost or has low cost and poor mixing effect. The utility model comprises a gas storage box and a gas pipeline, wherein the gas storage box consists of a cover plate and an annular piece, a plurality of air guide pipes and a plurality of mixing pipes are arranged in the gas storage box, the air guide pipes are connected with the mixing pipes, one ends of the air guide pipes are flower-shaped air outlets, gaps between the air outlets and the mixing pipes are air inlets, one ends of the air guide pipes and the mixing pipes are of step structures and are used for being installed on the cover plate, a through hole for installing the gas pipeline is formed in the annular piece, a sealing rubber ring is arranged between the cover plate and the annular piece, the sealing rubber ring is installed on the inner wall of the annular piece, the gas pipeline is an annular piece, a boss is arranged on the end face of the gas pipeline, and the boss is in interference fit with the through hole in the annular piece. The utility model has the advantages that: simple structure, low cost and sufficient gas mixing.

Description

Combustion chamber gas premixing device

Technical Field

The utility model belongs to the field of machinery, relates to a mixing device, and in particular relates to a combustion chamber gas premixing device.

Background

Premixing of gases is commonly practiced in chemical and metallurgical fields, and is mainly carried out by mixing a high-concentration combustible gas with a combustion-supporting gas (typically air) before the gases enter a combustion zone, so as to form a low-concentration fully-combustible mixed gas.

The prior gas mixing device mainly has the following two structures: first, set up a mixing chamber, one side in mixing chamber sets up the gas flow divider, and the gas transmission pipeline of first gas connects the gas flow divider, and first gas passes through the gas transmission pipeline and reachs the gas flow divider, and the gas flow divider shunts first gas, and first gas after the reposition of redundant personnel will enter into mixing chamber and second gas intensive mixing.

The second kind is also to set up a mixing chamber, installs a plurality of guide plates in the mixing chamber, and the air inlet of first gaseous and the air inlet of second gaseous set up in the different sides of mixing chamber, and after first gaseous and the second gaseous entering mixing chamber, constantly carry out gas mixing through the guide plate.

Both of the above gas mixing devices have drawbacks: the first mixing device has the advantages that the volume of the gas flow dividing piece is large, the required device is large, the gas can be fully mixed, the gas outlet of the second gas needs to be arranged around the mixing cavity, and the device is complex in structure and high in cost. The second type of mixing device, although simple in structure and low in cost, has limited gas mixing effect formed by the guide plates, and the gas cannot be fully mixed.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides the combustion chamber gas premixing device which has a simple structure and low cost and can fully mix gas.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a gaseous premixing device of combustion chamber, includes gas bin, gas pipeline, its characterized in that, gas bin is interior to be arranged a plurality of guide duct and a plurality of hybrid tube, guide duct and hybrid tube connect, guide duct junction forms the confetti mouth of flower form, the connector that receives mouth and hybrid tube exists the space, the space is the inlet port.

In the combustion chamber gas premixing device, the gas storage tank is composed of a cover plate and a rectangular annular piece, a plurality of mounting holes are formed in the cover plate, and through holes are formed in the annular piece.

In the combustion chamber gas premixing device, the air guide pipe mounting end is an air inlet, a first step is arranged at the air inlet, the mixing pipe mounting end is an air outlet, a second step is arranged at the air outlet, and interference fit is arranged between the first step and the second step and between the second step and the mounting hole.

In the above-mentioned combustion chamber gas premixing device, a boss is provided on the pipe orifice of the gas pipe, and the boss is in interference fit with the through hole.

In the gas premixing device for the combustion chamber, a sealing rubber ring is arranged at the contact part of the cover plate and the annular piece, and the sealing rubber ring is fixed on the cover plate through glue.

Compared with the prior art, the utility model has the following advantages: the device is composed of a gas pipeline, a box body for storing gas and a plurality of pipelines for conveying gas, and parts can be produced in a large scale; the device adopts venturi effect to mix gas, when air passes through the air guide pipe at high speed, the air generates negative pressure area near the converging port, and fuel gas is siphoned into the air flow to be mixed with air.

Drawings

FIG. 1 is an exploded view of a combustor gas premixing device;

FIG. 2 is a cross-sectional view of a combustor gas premixing device;

fig. 3 is a schematic structural view of a gas pipeline.

In the figure, 1, a fuel gas storage box; 11. a cover plate; 111. a mounting hole; 12. a ring member; 121. a through hole; 2. an air guide pipe; 21. a first step; 22. a converging port; 3. a mixing tube; 31. a step II; 4. an air inlet hole; 5. a gas pipeline; 51. a boss; 6. and (5) sealing the rubber ring.

Description of the embodiments

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1 to 2, the present utility model can be implemented by the following technical schemes: the utility model provides a combustion chamber gas premixing device, includes gas bin 1, gas pipeline 5, has a plurality of guide duct 2 and a plurality of hybrid tube 3 to arrange in the gas bin 1, and guide duct 2 and hybrid tube 3 are connected, and the link end of guide duct 2 is the confetti mouth 22 of flower form, and the space between confetti mouth 22 and the link end of hybrid tube 3 is inlet port 4.

The working principle of the combustion chamber gas premixing device is as follows: the device is filled with fuel gas through the fuel gas pipeline 5, air flow from a wind source enters the device through the air guide pipe 2, when the air flow reaches the converging port 22, the air flow speed is increased due to the reduction of the cross section, so that the air flow generates a negative pressure area near the outlet of the converging port 22, the fuel gas in the fuel gas storage box 1 is siphoned into the air flow through the air inlet 4 and enters the mixing pipe 3 together with the air flow, and the speed of the mixed air flow is slightly reduced due to the fact that the cross section of the mixing pipe 3 is larger than the converging port 22, and the fuel gas and the air flow are stirred for full mixing.

Further explaining, as shown in fig. 1 to 2, the gas storage tank 1 is composed of a cover plate 11 and a rectangular ring-shaped member 12, a plurality of mounting holes 111 are distributed on the cover plate 11, and through holes 121 are opened on the ring-shaped member 12. The mounting holes 111 on the cover plate 11 are used for mounting the air guide pipe 2 and the mixing pipe 3, and the through holes 121 on the annular piece 12 are used for mounting the gas pipeline 5.

As shown in fig. 2, the installation ends of the air guide pipe 2 and the mixing pipe 3 are respectively provided with a first step 21 and a second step 31, and the first step 21 and the second step 31 are tightly fixed with the installation hole 111 through interference fit. The step one 21 and the step two 31 are used for positioning the air guide pipe 2 and the mixing pipe 3 during installation, so that the air guide pipe 2 and the mixing pipe 3 can be quickly and accurately installed on the cover plate 11, and meanwhile, the step one 21, the step two 31 and the installation hole 111 are tightly fixed through interference fit, gaps between the air guide pipe 2 and the mixing pipe 3 and the cover plate 11 are eliminated, and gas leakage is prevented.

As shown in fig. 1 to 3, the gas pipe 5 is an annular part, one end of the gas pipe 5 is provided with a boss 51, and the boss 51 is in interference fit with the through hole 121. The setting of boss 51 is convenient for the installation of gas pipeline 5, also makes gas pipeline 5 stretch into in the gas bin 1, rises through interference fit and fixes, eliminates the gap between gas pipeline 5 and the gas bin 1 contact department, prevents that the gas from leaking the loss.

As shown in fig. 1 to 2, a sealing rubber ring 6 is mounted at the contact position of the cover plate 11 and the annular member 12, and the sealing rubber ring 6 is fixed on the cover plate 11 through glue. The installation of the sealing rubber ring 6 is favorable for preventing gas leakage, the sealing rubber ring 6 enhances the friction between the cover plate 11 and the annular piece 12, so that the cover plate 11 is not easy to displace, the constriction opening 22 of the air guide pipe 2 is prevented from excessively penetrating into the mixing pipe 3, the air flow is caused to generate turbulence in the mixing pipe 3, the gas cannot enter the mixing pipe 3 through the air inlet hole 4, insufficient mixing of the gas and the air is caused, and the final combustion effect of the gas is influenced.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although various terms are used more herein, the use of other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims

1. The utility model provides a combustion chamber gas premixing device, includes gas bin (1), gas pipeline (5), its characterized in that, gas bin (1) internal arrangement has a plurality of guide duct (2) and a plurality of hybrid tube (3), guide duct (2) are connected with hybrid tube (3), guide duct (2) one end is the confetti mouth (22) of flower form, the space between confetti mouth (22) and hybrid tube (3) is inlet port (4).

2. The combustor gas premixing device according to claim 1, wherein: the air guide pipe is characterized in that the installation end of the air guide pipe (2) is an air inlet, a first step (21) is arranged at the air inlet, the installation end of the mixing pipe (3) is an air outlet, a second step (31) is arranged at the air outlet, and interference fit is achieved between the first step (21) and the second step (31) and the installation hole (111).

3. The combustor gas premixing device according to claim 1, wherein: the gas storage box (1) is composed of a cover plate (11) and a rectangular annular piece (12), a plurality of mounting holes (111) are distributed on the cover plate (11), and through holes (121) are formed in the annular piece (12).

4. The combustor gas premixing device according to claim 1, wherein: the air guide pipe is characterized in that a first step (21) structure is arranged at the other end of the air guide pipe (2), a second step (31) structure is arranged at one end of the mixing pipe (3), and the first step (21) and the second step (31) are in interference fit with the mounting hole (111).

5. The combustor gas premixing device according to claim 1, wherein: the gas pipeline (5) is an annular part, a boss (51) is arranged at one end of the gas pipeline (5), and interference fit is arranged between the boss (51) and the through hole (121).

6. A combustor gas premixing device in accordance with claim 3, characterized in that: and a sealing rubber ring (6) is arranged at the contact position of the cover plate (11) and the annular piece (12), and the sealing rubber ring (6) is fixed on the annular piece (12) through glue.