CN213776472U

CN213776472U - Air-fuel check valve for combustor

Info

Publication number: CN213776472U
Application number: CN202022690618.9U
Authority: CN
Inventors: 郑治明
Original assignee: Kunshan Gengtian Heat Energy Technology Co ltd
Current assignee: Kunshan Gengtian Heat Energy Technology Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-07-23
Anticipated expiration: 2030-11-19

Abstract

The utility model discloses an air-fuel check valve for combustor, including intake stack and air-out pipeline, both ends are equipped with first flange and second flange respectively about the intake stack, both ends are equipped with third flange and fourth flange respectively about the air-out pipeline, second flange and third flange are connected, the second flange rotates with the connection terminal surface of third flange to be connected with and turns over the board, the upper end that turns over the board is equipped with the pivot. The utility model has the advantages that: the turning plate connected in a rotating mode realizes opening and closing of the air channel, the turning plate rotating angle is controlled, control of firepower of the combustion engine is realized, the assembled structure is convenient for assembling and disassembling of the check valve, maintenance is convenient, the structure is simple, and production and manufacturing are convenient.

Description

Air-fuel check valve for combustor

Technical Field

The utility model relates to a check valve technical field specifically is an air-fuel check valve for combustor.

Background

The burner is a device for converting substances into heat energy by a chemical reaction mode of combustion, namely, air and fuel gas are mixed by a premixing device according to a proper proportion so as to be fully combusted. The boiler burner is characterized by comprising an air supply system, an ignition system, a detection system, a combustion system and an electric control system, wherein a check valve is one of main components in the air supply system and is used for controlling air speed and air quantity, so that the condition that equipment is damaged and scrapped due to backflow of conveying gas caused by equipment failure and serious accidents such as fire, explosion and the like can be prevented. The commonly used check valve is mostly of a circular integral structure and is complex in structure, is installed inside an air duct, is difficult to maintain and repair, has long response time of opening and closing, and cannot quickly check backflow gas.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air-fuel check valve for combustor to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an air-fuel check valve for combustor, includes intake stack and air-out pipeline, both ends are equipped with first flange and second flange respectively about the intake stack, both ends are equipped with third flange and fourth flange respectively about the air-out pipeline, second flange and third flange are connected, the second flange rotates with the connection terminal surface of third flange to be connected with turns over the board, the upper end that turns over the board is equipped with the pivot.

Further preferably, the air inlet pipeline, the air outlet pipeline, the first flange, the second flange, the third flange and the fourth flange are all designed into rectangular structures.

Further preferably, the first flange and the fourth flange are both vertically arranged, the second flange and the third flange are designed in an inclined mode, the upper side edge of the second flange is close to the first flange end, and the lower side edge of the second flange is close to the fourth flange end.

Further preferably, a gasket is arranged between the second flange and the third flange.

Preferably, the inner edge of the second flange extends into the air inlet pipeline, grooves are formed in the upper ends of the front inner edge and the rear inner edge of the second flange, and a limiting step is arranged at the position, extending into the air inlet pipeline, of the lower end of the second flange.

Further preferably, the wind pressure detection pipeline is worn to be equipped with in the left side of intake stack, the wind pressure detection pipeline is L type structural design, and its mouth of pipe direction that is located intake stack inside is left.

Further preferably, the included angle between the second flange and the horizontal plane is 60 ℃.

Further preferably, the first flange is connected with a fan.

Advantageous effects

The utility model discloses an air-fuel check valve for combustor turns over the board through rotating the connection and realizes opening and closing in wind channel, turns over board turned angle's size through the control, realizes the control of combustor firepower size, and the equipment and the dismantlement of check valve of being convenient for are convenient for maintain, simple structure, the manufacturing of being convenient for.

Drawings

Fig. 1 is a schematic cross-sectional structural view of an air/fuel check valve for a combustor according to an embodiment of the present invention;

fig. 2 is a schematic axial view of an air-fuel check valve for a combustor according to an embodiment of the present invention;

fig. 3 is a left side view of an air/fuel check valve for a burner according to an embodiment of the present invention;

fig. 4 is a schematic view of three operating states of the air/fuel check valve for a combustor according to an embodiment of the present invention.

Reference numerals

1-an air inlet pipeline, 2-an air outlet pipeline, 3-a first flange, 4-a second flange, 5-a third flange, 6-a fourth flange, 7-a gasket, 8-a turning plate, 9-a rotating shaft, 10-a limiting step and 11-an air pressure detection pipeline.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Examples

As shown in fig. 1-3, an air-fuel check valve for a combustor includes an air inlet duct 1 and an air outlet duct 2, a first flange 3 and a second flange 4 are respectively disposed at left and right ends of the air inlet duct 1, a third flange 5 and a fourth flange 6 are respectively disposed at left and right ends of the air outlet duct 2, the second flange 4 is connected with the third flange 5, a turning plate 8 is rotatably connected to a connection end surface of the second flange 4 and the third flange 5, and a rotating shaft 9 is disposed at an upper end of the turning plate 8.

In this embodiment, the check valve is used for conveying the air and gas mixture to the burner, and controlling the throughput of the air and gas mixture, so as to prevent the fan from being damaged due to the backflow of the air and gas mixture. The opening angle of the turning plate 8 is controlled, and the size of fire of the burner is finally controlled. After the combustor stop work, stop air and gas mixture, turn over board 8 under the promotion that does not have the wind pressure, because dead weight is to the left turn and seal the wind channel, make intake stack 1 and air-out pipeline 2 be in the closure state, realize separation steam backward flow, reaction rate is fast. The check valve is of an assembled structure, is simple in structure and is convenient to assemble, disassemble and maintain.

Preferably, the air inlet pipeline 1, the air outlet pipeline 2, the first flange 3, the second flange 4, the third flange 5 and the fourth flange 6 are all designed in a rectangular structure, and the structure is simple and easy to manufacture.

Preferably, first flange 3 and the equal vertical setting of fourth flange 6 are convenient for intake stack 1 and the installation of air-out pipeline 2, second flange 4 and third flange 5 adopt the slope design, and its upper side is close to first flange 3 end, and its lower side is close to fourth flange 6 end, and the rotation direction of guaranteeing to turn over board 8 is for using pivot 9 that turns over board 8 upper end as the fulcrum, and the right side is rotatory, realizes that air and gas mist from left intake stack 1 entering, from the air-out pipeline 2 outflow on right side.

Preferably, a gasket 7 is arranged between the second flange 4 and the third flange 5, so that the connection tightness between the air inlet pipeline 1 and the air outlet pipeline 2 is ensured, and the mixed gas of air and fuel gas is prevented from flowing out from the connection position of the air inlet pipeline 1 and the air outlet pipeline 2.

Preferably, the inward flange of second flange 4 stretches into in the intake stack 1, plays and supports when the pipeline is closed and turns over the board 8 and the restriction turns over the board 8 to the left pivoted position, the upper end of inward flange all is seted up flutedly around the second flange 4 for the installation of pivot 9, the position that the lower extreme of second flange 4 stretched into intake stack 1 is equipped with spacing step 10, spacing step 10 is used for turning over the spacing of board 8, can prevent to turn over board 8 card and die on intake stack 1, and the rotation of board 8 is turned over in the influence.

Preferably, wind pressure detection pipeline 11 is worn to be equipped with in the left side of intake stack 1, wind pressure detection pipeline 11 is L type structural design, and its mouth of pipe orientation that is located intake stack 1 inside is left, wind pressure detection pipeline 11 is used for detecting the atmospheric pressure of air and gas mist that flows into in intake stack 1, real time monitoring, the control of the fan operation rotational speed of being convenient for.

Preferably, the included angle between the second flange 4 and the horizontal plane and the included angle between the third flange 5 and the horizontal plane are 60 ℃, so that the turning plate 8 can be blown by the mixed gas of air and fuel gas, and the air duct can be opened.

Preferably, the first flange 3 is connected with a fan for controlling the air pressure of the air and gas mixture, and further adjusting the upward opening angle of the turning plate 8, and finally controlling the firepower of the combustion engine.

Fig. 4 is a working state diagram of the check valve according to the present embodiment, which sequentially shows, from left to right, a closed state diagram of the check valve, a half-open state diagram of the check valve, and a full-open state diagram of the check valve.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the content of the present invention within the protection scope of the present invention.

Claims

1. An air-fuel check valve for a combustor, characterized in that: including intake stack (1) and air-out pipeline (2), both ends are equipped with first flange (3) and second flange (4) respectively about intake stack (1), both ends are equipped with third flange (5) and fourth flange (6) respectively about air-out pipeline (2), second flange (4) and third flange (5) are connected, second flange (4) rotate with the connection terminal surface of third flange (5) and are connected with and turn over board (8), the upper end that turns over board (8) is equipped with pivot (9).

2. An air-fuel check valve for a combustor according to claim 1, characterized in that: the air inlet pipeline (1), the air outlet pipeline (2), the first flange (3), the second flange (4), the third flange (5) and the fourth flange (6) are all designed in a rectangular structure.

3. An air-fuel check valve for a combustor according to claim 1, characterized in that: the first flange (3) and the fourth flange (6) are vertically arranged, the second flange (4) and the third flange (5) are designed in an inclined mode, the upper side edge of the second flange is close to the end of the first flange (3), and the lower side edge of the second flange is close to the end of the fourth flange (6).

4. An air-fuel check valve for a combustor according to claim 1, characterized in that: and a gasket (7) is arranged between the second flange (4) and the third flange (5).

5. An air-fuel check valve for a combustor according to claim 1, characterized in that: the inner edge of the second flange (4) stretches into the air inlet pipeline (1), grooves are formed in the upper ends of the inner edges of the second flange (4) in the front and at the back, and limiting steps (10) are arranged at the positions, stretching into the air inlet pipeline (1), of the lower end of the second flange (4).

6. An air-fuel check valve for a combustor according to claim 1, characterized in that: wind pressure detection pipeline (11) are worn to be equipped with in the left side of intake stack (1), wind pressure detection pipeline (11) are L type structural design, and its mouth of pipe direction that is located intake stack (1) inside is left.

7. An air-fuel check valve for a combustor according to claim 1, characterized in that: the included angle between the second flange (4) and the third flange (5) and the horizontal plane is 60 degrees.

8. An air-fuel check valve for a combustor according to claim 1, characterized in that: the first flange (3) is connected with a fan.