CN216667707U

CN216667707U - Pulse tank for boiler soot blower

Info

Publication number: CN216667707U
Application number: CN202122933464.6U
Authority: CN
Inventors: 任现龙
Original assignee: Luoyang Zhuojie Environmental Protection Technology Co ltd
Current assignee: Luoyang Zhuojie Environmental Protection Technology Co ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-06-03
Anticipated expiration: 2031-11-26

Abstract

The utility model belongs to the technical field of boiler soot blowing, and discloses a pulse tank for a boiler soot blower, which comprises a tank body, an air inlet pipe and a gas mixing acceleration assembly, wherein the air inlet pipe extends into the tank body from the side wall of the tank body; the air inlet pipe in the tank body is provided with an air outlet, and the bottom of the tank body is provided with an injection outlet; the gas mixing acceleration assembly comprises an S-shaped flow passage, the flowing direction of the S-shaped flow passage is the same as the flowing direction of mixed gas in the gas inlet pipe, and the area of the cross section of the S-shaped flow passage is smaller than that of the cross section of the gas inlet pipe in the flowing direction of the mixed gas. According to the utility model, the flow path and kinetic energy of the mixed gas are increased through the S-shaped flow channel, so that the mixing degree of the mixed gas is further realized, and the problem that the mixed gas in the existing pulse tank cannot be completely combusted is solved.

Description

Pulse tank for boiler soot blower

Technical Field

The utility model belongs to the technical field of boiler soot blowing, and particularly relates to a pulse tank for a boiler soot blower.

Background

The gas pulse soot blowing technology mainly utilizes combustible gas such as acetylene, coal gas, natural gas, liquefied petroleum gas and other common gas fuels to be mixed with air according to a certain proportion, the mixture is rapidly combusted in a specially designed combustion chamber to generate certain peak pressure, high-speed jet flow and excitation are formed, shock waves and strong sound waves are emitted from a nozzle on an output pipe, and the shock waves and the strong sound waves are repeatedly acted on the surface of deposited soot through the process of 'firstly stamping and then drawing', so that the deposited soot can be loosened and finally fall off even if the deposited soot is hard soot.

The pulse tank is an important component of the soot blower, and mainly plays a role in complete combustion of gas. In the prior art, because the mixed gas entering the pulse tank is not sufficiently mixed, the mixed gas cannot be completely combusted in the pulse tank, and further, enough impact force cannot be achieved to reduce the pulse effect.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pulse tank for a boiler soot blower, which aims to solve the problem that the mixed gas in the existing pulse tank cannot be completely combusted.

The utility model provides a pulse tank for a boiler soot blower, which comprises a tank body, an air inlet pipe and a gas mixing acceleration assembly, wherein the air inlet pipe extends into the tank body from the side wall of the tank body;

the air inlet pipe in the tank body is provided with an air outlet, and the bottom of the tank body is provided with an injection outlet; the gas mixing acceleration assembly comprises an S-shaped flow channel, the flowing direction of the S-shaped flow channel is the same as the flowing direction of mixed gas in the gas inlet pipe, and the area of the cross section of the S-shaped flow channel is smaller than that of the cross section of the gas inlet pipe in the flowing direction of the mixed gas.

Furthermore, the gas mixing acceleration assembly is composed of a plurality of baffles, and the baffles are arranged in the gas inlet pipe at intervals to form the S-shaped flow channel.

Furthermore, a plurality of protrusions are arranged on the surface of the baffle opposite to the flowing direction of the mixed gas, and the plurality of protrusions are arranged on the baffle at intervals.

Further, the air inlet pipe comprises a first air dividing pipe and a second air dividing pipe; the first gas distribution pipe and the second gas distribution pipe in the tank body are arranged up and down, the gas outlet is formed in the first gas distribution pipe and the second gas distribution pipe, and the tail ends of the first gas distribution pipe and the second gas distribution pipe are sealed.

Further, the jar is internal first gas distribution pipe with the equal level setting of second gas distribution pipe, first gas distribution pipe with second gas distribution pipe water stretches into jar internal length L along the horizontal direction and is less than the internal diameter R of jar body.

Further, the up-down distance h between the first gas distribution pipe and the second gas distribution pipe satisfies: h is more than or equal to R and less than or equal to 1.7R.

The separating plate is arranged below the air inlet pipe and is used for dividing the inner cavity of the tank body into an upper cavity and a lower cavity; the partition plate is also provided with a plurality of vent holes for communicating the upper cavity and the lower cavity.

Furthermore, the device also comprises an air inlet valve and an air outlet valve; the air inlet valve is arranged outside the tank body and is arranged at the air inlet end of the air inlet pipe; the air outlet valve is arranged at the injection outlet; an air pressure detection unit is installed in the lower cavity and used for detecting the air pressure in the tank body.

Compared with the prior art, the utility model adopting the scheme has the beneficial effects that:

the S-shaped flow passage can increase the flow path of the mixed gas in the air inlet pipe so as to improve the mixing degree of the mixed gas; and because the area of the cross section of the S-shaped flow passage is smaller than that of the cross section of the air inlet pipe, the flow speed of the mixed gas is increased, so that the mixed gas entering the tank body has larger kinetic energy, and the mixed gas can be further mixed after entering the tank body, thereby further mixing the mixed gas and solving the problem that the mixed gas in the conventional pulse tank cannot be completely combusted.

Drawings

FIG. 1 is a schematic cross-sectional structural view of a pulse canister for a boiler soot blower provided by an embodiment of the present invention; the single arrows in the figure represent the mixed gas flow direction;

FIG. 2 is a schematic view in one perspective of a baffle for a pulse canister of a boiler sootblower according to an embodiment of the present invention;

FIG. 3 is a schematic view of a baffle of a pulse canister for a boiler sootblower in another view according to an embodiment of the present invention.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the utility model, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "central," "upper," "lower," "front," "rear," "left," "right," "axial," "radial," and the like are used in the positional or orientational relationships indicated in the drawings for the convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The meaning of "plurality" is two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In order to solve the problem that the existing pulse tank for the boiler soot blower is not fully mixed with the mixed gas in the pulse tank, so that incomplete combustion is easily caused, and further, sufficient impact force cannot be achieved to reduce the pulse effect, the embodiment provides the pulse tank for the boiler soot blower, and as shown in fig. 1, the pulse tank for the boiler soot blower comprises a tank body 1, an air inlet pipe 2 extending from the side wall of the tank body 1 into the tank body 1, and an air mixing acceleration assembly 3 arranged in the air inlet pipe 2;

an air outlet 23 is arranged on the air inlet pipe 2 in the tank body 1, and mixed gas (namely, the mixed gas is formed by mixing common gas fuel and air according to a certain proportion) outside the pulse tank enters the tank body 1 from the air outlet 23 of the air inlet pipe 2. The bottom of the tank body 1 is provided with an injection outlet 7, and the mixed gas forms shock waves and strong sound waves at the injection outlet 7 after being ignited in the tank body 1, and repeatedly acts on the ash deposition surface to realize the soot blowing of the boiler.

In order to improve the mixing degree of the mixed gas entering the tank 1, in the embodiment, a mixing acceleration assembly 3 is further installed in the gas inlet pipe 2, the mixing acceleration assembly 3 comprises an S-shaped flow passage, the flow direction of the S-shaped flow passage is the same as the flow direction of the mixed gas in the gas inlet pipe 2, the area of the cross section of the S-shaped flow passage is smaller than that of the cross section of the gas inlet pipe 2 in the flow direction of the mixed gas, and the S-shaped flow passage can increase the flow path of the mixed gas in the gas inlet pipe 2 to improve the mixing degree of the mixed gas; and because the area of the cross section of the S-shaped flow passage is smaller than that of the cross section of the air inlet pipe 2, the flow speed of the mixed gas is increased, so that the mixed gas entering the tank body has larger kinetic energy, and the mixed gas can be further mixed after entering the tank body, thereby further mixing the mixed gas and solving the problem that the mixed gas in the conventional pulse tank can not be completely combusted.

As shown in fig. 1 to 3, the gas mixing acceleration assembly 3 is composed of a plurality of baffles 31, and the baffles 31 are arranged in the gas inlet pipe 2 at intervals to form an S-shaped flow passage. The surface of the baffle 31 opposite to the flowing direction of the mixed gas is provided with a plurality of protrusions 311, the plurality of protrusions 311 are arranged on the baffle 31 at intervals, and when the mixed gas collides with the protrusions 311, the protrusions can change the moving direction of the mixed gas, so that the degree of mutual mixing of the mixed gas is further increased, and the flowing path of the mixed gas is increased.

As shown in fig. 1, the intake pipe 2 includes a first branch pipe 21 and a second branch pipe 22; the first gas-dividing pipe 21 and the second gas-dividing pipe 22 in the tank body 1 are arranged up and down, the gas outlet 23 is arranged on the first gas-dividing pipe 21 and the second gas-dividing pipe 22, and the tail ends of the first gas-dividing pipe 21 and the second gas-dividing pipe 22 are closed. Since the first and second

branch gas pipes

21 and 22 are arranged up and down, the mixed gas flowing out of the gas outlet 23 of the first branch gas pipe 21 has upward kinetic energy, and the flow direction thereof is changed to downward when it collides with the inner side wall of the can body 1, and again collides with the mixed gas flowing out of the gas outlet 23 of the second branch gas pipe 22, thereby further increasing the mixing degree of the mixed gas.

In jar internal first trachea 21 and the equal level setting of second trachea 22 of jar body 1, first trachea 21 and second trachea 22 stretch into the length L of jar internal 1 along the horizontal direction and are less than jar internal diameter R of body 1, and the upper and lower distance h between first trachea 21 and the second trachea 22 satisfies: h is not less than 1.7R and is not more than R. The first gas pipe 21 and the second gas branch pipe 22 thus designed can increase the degree of mixing of the mixed gas through a plurality of experiments.

In addition, in order to further increase the shock wave and the sound wave at the injection outlet 7 after the mixed gas in the tank body is ignited, a partition plate 4 is further installed below the air inlet pipe 2 in the present example, and the partition plate 4 is used for dividing the inner cavity of the tank body 1 into an upper chamber 11 and a lower chamber 12; the partition plate 4 is further provided with a plurality of vent holes 41 for communicating the upper chamber 11 and the lower chamber 12. The mixed gas in the upper chamber 11 enters the lower chamber 12 from the vent holes 41 and is ignited, and because the cross-sectional area of the vent holes 41 is small, the mixed gas is accelerated to increase kinetic energy when passing through the vent holes 41, so that on one hand, the unburned gas in the lower chamber 12 is prevented from returning to the upper chamber 11, and on the other hand, the sound wave sprayed from the spray outlet 7 can be increased to improve the soot blowing effect.

In the present embodiment, an intake valve 5 and an exhaust valve 6 are further included; the air inlet valve 5 is arranged outside the tank body 1 and is arranged at the air inlet end of the air inlet pipe 2; the air outlet valve 5 is arranged at the injection outlet 7; an air pressure detection unit is arranged in the lower chamber 12 and is used for detecting the air pressure in the tank body 1. The present soot blower for a boiler has a controller electrically connected to an air pressure detecting unit (e.g., an air pressure sensor), an air inlet valve 5 and an air outlet valve 6 of the present embodiment. The air pressure sensor sends the detected air pressure in the lower chamber 12 to the controller in real time, and the controller judges whether the real-time air pressure reaches a preset value or not; if so, the gas outlet valve 6 is controlled to be opened, and then larger shock waves and sound waves at the spraying position of the spraying outlet 7 can be ensured; if not, the air outlet valve 6 is controlled to be closed until the real-time air pressure reaches the preset air pressure.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the described parent features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A pulse tank for a boiler soot blower is characterized by comprising a tank body (1), an air inlet pipe (2) extending from the side wall of the tank body (1) to the inside of the tank body (1), and a gas mixing acceleration assembly (3) arranged in the air inlet pipe (2);

an air outlet (23) is formed in the air inlet pipe (2) in the tank body (1), and an injection outlet (7) is formed in the bottom of the tank body (1); the gas mixing acceleration assembly (3) comprises an S-shaped flow channel, the flowing direction of the S-shaped flow channel is the same as the flowing direction of mixed gas in the gas inlet pipe (2), and the area of the cross section of the S-shaped flow channel is smaller than that of the cross section of the gas inlet pipe (2) in the flowing direction of the mixed gas.

2. The pulse pot for a boiler sootblower according to claim 1, characterized in that said gas mixing acceleration assembly (3) is constituted by a plurality of baffles (31), said plurality of baffles (31) being arranged spaced apart from each other in said inlet pipe (2) to form said S-shaped flow channel.

3. The pulse pot for a boiler sootblower according to claim 2, wherein a surface of said baffle plate (31) opposite to a flow direction of the mixed gas is provided with a plurality of protrusions (311), and a plurality of said protrusions (311) are provided on said baffle plate (31) at intervals.

4. Impulse pot for a boiler sootblower according to claim 1, characterized in, that the inlet pipe (2) comprises a first (21) and a second (22) branch pipe; the first gas distribution pipe (21) and the second gas distribution pipe (22) in the tank body (1) are arranged up and down, the gas outlet (23) is formed in the first gas distribution pipe (21) and the second gas distribution pipe (22), and the tail ends of the first gas distribution pipe (21) and the second gas distribution pipe (22) are sealed.

5. The impulse pot for a boiler sootblower according to claim 4, characterized in that said first and second branch pipes (21, 22) in said pot (1) are horizontally arranged, and the length L of said first and second branch pipes (21, 22) extending into said pot (1) in the horizontal direction is smaller than the inner diameter R of said pot (1).

6. The pulse pot for a boiler sootblower according to claim 5, characterized in that the up-down distance h between said first and second branch pipes (21, 22) is such that: h is not less than 1.7R and is not more than R.

7. The pulse tank for the soot blower of the boiler according to any one of claims 1 to 6, further comprising a partition plate (4), wherein the partition plate (4) is provided below the inlet pipe (2) for dividing the inner cavity of the tank body (1) into an upper chamber (11) and a lower chamber (12); the partition plate (4) is further provided with a plurality of vent holes (41) for communicating the upper chamber (11) with the lower chamber (12).

8. The pulse pot for a boiler sootblower according to claim 7, further comprising an inlet valve (5) and an outlet valve (6); the air inlet valve (5) is arranged outside the tank body (1) and is arranged at the air inlet end of the air inlet pipe (2); the gas outlet valve (6) is arranged at the injection outlet (7); an air pressure detection unit is arranged in the lower chamber (12) and used for detecting the air pressure in the tank body (1).