Mixed flame arrester for fuel gas shock wave soot blower

Abstract

The utility model discloses a mixing flame arrester for a fuel gas shock wave soot blower, which comprises a cylinder body, an air pipe seat, a fuel gas pipe seat, a reverse blowing pipe seat, an outlet pipe seat, a multi-stage uniform mixing device and a multi-stage flame arrester, and an inner cavity of the cylinder body is sequentially composed of a front mixing cavity, a middle uniform mixing flame arresting cavity and an outlet cavity from an inlet to an outlet; the air pipe seat, the gas pipe seat and the reverse blowing pipe seat are respectively arranged on the side wall of the front mixing cavity; the outlet pipe seat is arranged on the side wall of the outlet cavity; and the multi-stage uniform mixing device and the multi-stage flame arrester are arranged in the middle uniform mixing flame-retardant cavity up and down. The mixing flame arrester for the fuel gas shock wave soot blower has the technical advantages of being even in mixing, reliable in flame arresting, convenient to install and fix, resistant to boiler positive pressure and capable of remarkably improving the safety performance of the shock wave soot blower.

Description

Technical Field

[0001] The utility model relates to a mixed flame arrester for a gas shock wave soot blower. Background Art

[0002] The soot accumulation on the heating surface of the boiler is one of the important reasons that affect the performance of the boiler. In order to overcome the soot accumulation on the heating surface and improve the thermal efficiency of the boiler, the gas shock wave soot blower is one of the effective ways to solve the soot accumulation in the boiler. The gas shock wave soot blower mixes the combustible gas and the combustion-supporting air and passes them into the shock wave generator. The ignited mixed gas explodes in the shock wave generator to generate shock waves that act on the heating surface, thereby removing the soot accumulation. At present, the existing gas shock wave soot blowers generally have the defects of uneven mixing of the combustible gas and the combustion-supporting air, and no flame arrester is set in the pipeline of the combustible mixed gas after ignition. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a mixing flame arrester for a gas shock wave soot blower, which can evenly mix the combustible gas required by the shock wave soot blower and prevent backfire in the direction of the gas source after the combustible mixed gas is ignited. It has the technical advantages of uniform mixing, reliable flame arresting, easy installation and fixation, resistance to boiler positive pressure and can significantly improve the safety performance of the shock wave soot blower.

[0004] The technical solution to achieve the above purpose is: a mixed flame arrester for a gas shock wave soot blower, comprising a cylinder, an air pipe seat, a gas pipe seat, a back-blowing pipe seat, an outlet pipe seat, a multi-stage homogenizer and a multi-stage flame arrester, wherein:

[0005] The internal cavity of the cylinder is composed of a front mixing cavity, a middle uniform mixing fire-blocking cavity and an outlet cavity from the inlet to the outlet;

[0006] The air pipe seat, the gas pipe seat and the reverse air blowing pipe seat are respectively arranged on the side walls of the front mixing chamber;

[0007] The outlet pipe seat is arranged on the side wall of the outlet cavity;

[0008] The multi-stage homogenizer and the multi-stage flame arrester are arranged one above the other in the middle homogenizer and flame arrester cavity.

[0009] The above-mentioned mixed flame arrester for a gas shock wave soot blower, wherein the number of the air pipe seat is at least one.

[0010] The above-mentioned mixed flame arrester for a gas shock wave soot blower, wherein the multi-stage homogenizer is composed of multiple layers of stainless steel baffles.

[0011] The above-mentioned mixed flame arrester for a gas shock wave soot blower, wherein the multi-stage flame arrester is composed of multiple layers of stainless steel corrugated mesh.

[0012] The above-mentioned mixed flame arrester for a gas shock wave soot blower, wherein the air pipe seat is located at the inlet of the cylinder, the gas pipe seat and the back-blowing pipe seat are arranged on both radial sides of the front mixing chamber; the outlet pipe seat is located at the outlet of the cylinder.

[0013] The utility model provides a mixing flame arrester for a gas-fired shock wave soot blower, which can evenly mix the combustible gas required by the shock wave soot blower and prevent backfire in the direction of the gas source after the combustible mixed gas is ignited. It has the technical advantages of even mixing, reliable flame arresting, easy installation and fixing, resistance to boiler positive pressure and can significantly improve the safety performance of the shock wave soot blower. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the mixed flame arrester for the gas shock wave soot blower of the utility model;

[0015] Figure 2 It is a top view of the mixed flame arrester for the gas shock wave soot blower of the present utility model. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the utility model, the specific implementation method thereof is described in detail below in conjunction with the accompanying drawings:

[0017] See also Figure 1 and Figure 2 The best embodiment of the utility model is a mixed flame arrester for a gas shock wave soot blower, comprising a cylinder 10, an air pipe seat 21, a gas pipe seat 22, a back-blowing pipe seat 23, an outlet pipe seat 24, a multi-stage homogenizer 31 and a multi-stage flame arrester 32. The internal cavity of the cylinder 10 is composed of a front mixing chamber 11, a middle homogenizing flame arrester chamber 12 and an outlet chamber 13 from the inlet to the outlet; the air pipe seat 21, the gas pipe seat 22 and the back-blowing pipe seat 23 are respectively arranged on the side walls of the front mixing chamber 11; the outlet pipe seat 24 is arranged on the side walls of the outlet chamber 13; specifically, the air pipe seat 21 is located at the inlet of the cylinder 10, the gas pipe seat 22 and the back-blowing pipe seat 23 are respectively arranged on the radial sides of the front mixing chamber 11; the outlet pipe seat 24 is located at the outlet of the cylinder 10. The number of air pipe seats 21 is at least one, and in order to increase the amount of air entering, two or more air pipe seats 21 can be provided.

[0018] The multi-stage homogenizer 31 and the multi-stage flame arrester 32 are arranged one above the other in the middle homogenizer and flame arrester chamber 12 .

[0019] The cylinder 10 is a welded integral structure, and each pipe seat is welded to the cylinder 10. The multi-stage homogenizer 31 is composed of multiple layers of stainless steel baffles, generally 2 layers or more layers, to ensure that the combustible gas and air are evenly mixed. The multi-stage flame arrester 32 is composed of multiple layers of stainless steel corrugated mesh, generally 2 layers or more layers, to ensure that there is no backfire after ignition.

[0020] The utility model uses a mixed flame arrester for a gas shock wave soot blower, and the air pipe seat 21 is the inlet end, connected to the combustion-supporting air of the shock wave soot blower; the gas pipe seat 22 is connected to the gas of the shock wave soot blower, and the back-blowing pipe seat 23 is connected to the back-blowing of the shock wave soot blower; the outlet pipe seat 24 is the outlet end, connected to the shock wave generator. The working principle is as follows: the combustion-supporting air and the combustible gas enter the mixing chamber from the air pipe seat 21 and the gas pipe seat 22 at the same time, and are uniformly mixed into a deflagration mixed gas after the action of the corrugated plate multi-stage homogenizer 31, and then enter the ignition unit from the outlet pipe seat 24 after passing through the multi-stage flame arrester 32 and finally enter the shock wave generator. After the ignition unit receives the control command to ignite, the deflagration gas is ignited until the shock wave generator deflagrates and generates a shock wave. At this time, the shock wave generator and all the previous units are in a combustion state after the temperature and pressure are increased, and the combustion flame is cooled and isolated by the flame arrester so that it will not continue to transmit waves to the previous combustible gas pipeline, thereby playing the role of protecting the safety of the shock wave soot blower system.

[0021] The utility model of the mixed flame arrester for the gas shock wave soot blower mainly realizes two major functions. First, the combustion-supporting air and the combustible gas required by the shock wave soot blower can be evenly mixed in the homogenizer of the mixed flame arrester, thereby improving the shock wave generation efficiency. Second, a multi-stage flame arrester is arranged after the homogenizer, which can effectively prevent the gas from flashing back after ignition, thereby improving the safety of the shock wave soot blower.

[0022] To sum up, the mixing flame arrester for the gas shock wave soot blower of the utility model can evenly mix the combustible gas required by the shock wave soot blower and prevent backfire in the direction of the gas source after the combustible mixed gas is ignited. It has the technical advantages of uniform mixing, reliable flame arresting, easy installation and fixation, resistance to boiler positive pressure and can significantly improve the safety performance of the shock wave soot blower.

[0023] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A mixed flame arrester for a gas shock wave soot blower, characterized in that: It includes a cylinder, an air pipe seat, a gas pipe seat, a back-blowing pipe seat, an outlet pipe seat, a multi-stage homogenizer and a multi-stage flame arrester, among which: The internal cavity of the cylinder is composed of a front mixing cavity, a middle uniform mixing fire-blocking cavity and an outlet cavity from the inlet to the outlet; The air pipe seat, the gas pipe seat and the reverse air blowing pipe seat are respectively arranged on the side walls of the front mixing chamber; The outlet pipe seat is arranged on the side wall of the outlet cavity; The multi-stage homogenizer and the multi-stage flame arrester are arranged one above the other in the middle homogenizer and flame arrester cavity.

2. A mixed flame arrester for a gas shock wave soot blower according to claim 1, characterized in that: The number of the air pipe seat is at least one.

3. A mixed flame arrester for a gas shock wave soot blower according to claim 1, characterized in that: The multi-stage homogenizer is composed of multiple layers of stainless steel baffles.

4. A mixed flame arrester for a gas shock wave soot blower according to claim 1, characterized in that: The multi-stage flame arrester is composed of multiple layers of stainless steel corrugated mesh.

5. A mixed flame arrester for a gas shock wave soot blower according to claim 1, characterized in that: The air pipe seat is located at the inlet of the cylinder, the gas pipe seat and the back-blowing pipe seat are arranged on both radial sides of the front mixing chamber; the outlet pipe seat is located at the outlet of the cylinder.

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