CN217950747U

CN217950747U - Inner leakage prevention flue sealing structure

Info

Publication number: CN217950747U
Application number: CN202222193469.4U
Authority: CN
Inventors: 冯一骏; 刘行行; 吕向东; 李守龙; 王东; 刘修智
Original assignee: Huadian Power International Co ltd Shiliquan Power Plant
Current assignee: Huadian Power International Co ltd Shiliquan Power Plant
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2022-12-02
Anticipated expiration: 2032-08-19

Abstract

The utility model relates to a picture peg door technical field, concretely relates to prevent interior leak flue seal structure, including setting up the picture peg door in the flue frame, still include the wind pressure sealing mechanism, the wind pressure sealing mechanism includes wind pressure cover, induced duct and fan, fan and wind pressure cover all set up the windward side at the picture peg door, the wind pressure cover sets up around the inner wall of flue frame and forms the wind pressure room with the inner wall of flue frame is around, wind pressure room port is right with the picture peg door, the fan passes through induced duct and communicates with the wind pressure room; a connection gap exists between the insertion plate door and the flue frame, the wind pressure sealing mechanism is used for forming high-pressure air pressure at the connection position of the insertion plate door and the flue frame to prevent smoke with lower air pressure from leaking to the leeward side from the windward side through the connection gap, and the smoke is further prevented from leaking while the sealing effect of the insertion plate door is achieved.

Description

Inner leakage prevention flue sealing structure

Technical Field

The utility model relates to a picture peg door technical field, concretely relates to leak in preventing flue seal structure.

Background

Because of the needs of regular and irregular inspection maintenance of equipment, all be equipped with the flue gas picture peg door between the play flue of thermal power factory and other equipment, when carrying out overhaul of the equipments, close the picture peg door and cut off the flue gas, make things convenient for the maintainer to normally work, but the sealed effect of current picture peg door is unsatisfactory, because contain a large amount of toxic gas and high-temperature gas in the flue gas, there is the problem of leaking in the flue gas after the picture peg door is closed, influence the maintainer physical and mental health.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prevent interior flue seal structure that leaks solves and to leak the problem in the picture peg door exists the flue gas among the prior art.

The utility model discloses a realize that above-mentioned purpose technical scheme does:

the utility model provides a leak flue seal structure in preventing, its characterized in that, is including setting up the picture peg door in the flue frame, still includes wind pressure sealing mechanism, wind pressure sealing mechanism includes wind pressure cover and induced duct, the windward side of setting at the picture peg door of wind pressure cover, wind pressure cover around the inner wall setting of flue frame and around forming the wind pressure room with the inner wall of flue frame, wind pressure room port is right with the picture peg door, induced duct and wind pressure room intercommunication.

Further limiting, the wind pressure cover is of an L-shaped structure, one right-angle edge of the wind pressure cover is vertically connected with the flue frame, and the other right-angle edge of the wind pressure cover is opposite to the inserting plate door and is spaced from the inserting plate door.

Further limiting, the clearance between the right-angle edge of the wind pressure cover and the inserting plate door is 10-20 mm.

Further inject, the wind pressure sealing mechanism still includes first sealing member, the vertical setting of first sealing member, first sealing member include first connecting piece and first elastic component, the one end and the wind pressure of first connecting piece cover the outside and be connected, the other end of first connecting piece is through first elastic component and picture peg door in close contact with.

Further inject, the wind pressure sealing mechanism still includes the second sealing member, the second sealing member sets up with first sealing member syntropy, and the second sealing member is located the indoor side of wind pressure, and the second sealing member includes second connecting piece and second elastic component, the one end and the flue frame of second connecting piece are connected, and the other end of second connecting piece passes through second elastic component and picture peg door in close contact with.

Further defined, the second seal is also disposed on a leeward side of the gate.

Further limiting, the included angle between the first sealing element and the corresponding end face of the wind pressure cover is 40-50 degrees, and the included angle between the second sealing element and the corresponding end face of the flue frame is 40-50 degrees.

Further defined, the wind pressure sealing mechanism further comprises a third sealing element, the third sealing element is connected with the flue frame along the horizontal direction, and the third sealing element is positioned below the inserting plate door.

The utility model has the advantages that:

1. a connection gap exists between the insertion plate door and the flue frame, the wind pressure sealing mechanism is used for forming high-pressure air pressure at the connection position of the insertion plate door and the flue frame to prevent smoke with lower air pressure from leaking to the leeward side from the windward side through the connection gap, and the smoke is further prevented from leaking while the sealing effect of the insertion plate door is achieved.

2. Leave the clearance between wind pressure cover and the picture peg door and avoid the picture peg door to go up down switch and wind pressure chamber contact production collision and/or friction reduction life, utilize first sealing member to guarantee that the flue gas of picture peg door windward side can not get into the back of the body side of picture peg door through the wind pressure chamber, utilize the second sealing member to avoid leaking to the back of the body side of picture peg door in the indoor high-pressure air of wind pressure.

3. Utilize the third sealing member to be connected with flue frame inner wall bottom for the back is closed with third sealing member in close contact with to the picture peg door, thereby guarantee that the flue gas can not leak to the picture peg door leeward side in the picture peg door bottom, guarantee sealed effect.

Drawings

FIG. 1 is a schematic front view of the overall structure of the present invention;

FIG. 2 is a schematic top view of the overall structure of the present invention (the blower is not shown);

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a schematic view of the third sealing member connection of the present invention;

in the figure: 1-a gate panel; 2-wind pressure cover; 3-an induced draft tube; 4-a fan; 5-a wind pressure chamber; 6-a first seal; 61-a first connector; 62-a first elastic member; 7-a second seal; 8-third seal.

Detailed Description

Referring to fig. 1 and 2, the embodiment provides an inner leakage-proof flue sealing structure, including a plugboard door 1 and a wind pressure sealing mechanism, the plugboard door 1 is installed in a flue frame, so that one side of the plugboard door 1 is a windward side contacting with flue gas, the other side of the plugboard door 1 is a leeward side isolating the flue gas, the plugboard door 1 enables the plugboard door 1 to slide up and down to control opening and closing of the flue through sliding connection with the flue frame, the plugboard door 1 is of a rectangular structure, a connection gap exists between the plugboard door 1 and the flue frame at a connection position, the wind pressure sealing mechanism is used for forming high-pressure air pressure at the connection position of the plugboard door 1 and the flue frame to prevent the flue gas with lower air pressure from leaking to the leeward side through the connection gap from the windward side.

Referring to fig. 3, the wind pressure sealing mechanism includes a wind pressure cover 2, an induced duct 3 and a fan 4, the cross-sectional shape of the wind pressure cover 2 can be selected to be an L-shaped structure, an n-shaped structure or a square-shaped structure, when the cross-sectional shape of the wind pressure cover 2 is the square-shaped structure, a pressure relief opening communicated with the windward side is formed on the wind pressure cover 2, and the pressure relief opening is opposite to the connection gap, preferably, the cross-sectional shape of the wind pressure cover 2 is the L-shaped structure, the wind pressure cover 2 is a square-shaped structure and is connected with the inner side of the flue frame, so that an n-shaped wind pressure chamber 5 is formed between the wind pressure cover 2 and the flue frame, the fan 4 is communicated with the wind pressure chamber 5 through the induced duct 3, the open end of the wind pressure chamber 5 is opposite to the spile door 1, and the connection gap is located in the wind pressure chamber 5, high-pressure air blows into plenum 5 through induced duct 3 under the blast action of fan 4 in for form high-pressure air chamber in the plenum 5, avoid the flue gas in the wind pressure cover 2 outside to pass through plenum 5 and get into the leeward side of picture peg door from the joint gap, and avoid picture peg door 1 from going up the lower switch and producing collision and/or friction reduction life with plenum 5 contact, leave the clearance between preferred wind pressure cover 2 and the picture peg door, the distance in this clearance is 10 ~ 20mm, the high-pressure air that this clearance was revealed also can get into the windward side of picture peg door 1 simultaneously and can avoid the flue gas to get into plenum 5 from this clearance equally, and also can assist improvement flue gas circulation speed.

Preferably, the wind pressure sealing mechanism further comprises a first sealing element 6, the first sealing element 6 is vertically installed on two opposite sides of the wind pressure cover 2, the first sealing element 6 comprises a first connecting element 61 and a first elastic element 62, the first connecting element 61 can be selected as a connecting plate, the first connecting element 61 is connected with the outer wall of the wind pressure cover 2, the other end of the first connecting element 61 is in close contact with the inserting plate door 1 through the first elastic element 62, further, preferably, an included angle between the first sealing element 6 and the wind pressure cover 2 is 40-50 degrees, preferably 45 degrees, therefore, on one hand, smoke can be prevented from entering the wind pressure chamber 5, on the other hand, high-pressure air in the wind pressure chamber 5 can be prevented from leaking inwards, the running power of the fan 4 is reduced, and the sealing effect is further improved.

Preferably, the wind pressure sealing mechanism further comprises a second sealing element 7, the second sealing element 7 is connected with the left side and the right side of the flue frame along the vertical direction, the second sealing element 7 also comprises a second connecting element and a second elastic element, one end of the second connecting element is connected with the flue frame, and the other end of the second connecting element is in close contact with the inserting plate door 1 through the second elastic element, so that the second sealing element 7 covers the outer side of the connecting gap, thereby preventing high-pressure air in the wind pressure chamber 5 from leaking to the leeward side of the inserting plate door 1 from the connecting gap, reducing the operating power of the fan 4 and ensuring the sealing effect of the wind pressure chamber 5; the included angle between the end faces corresponding to the second sealing element 7 and the flue frame is 40-50 degrees, preferably 45 degrees, and the second sealing element 7 is further preferably arranged on the windward side and the leeward side of the inserting plate door 1 respectively, so that the second sealing element 7 on the leeward side can prevent smoke and/or high-pressure air on the windward side of the inserting plate door 1 from leaking to the leeward side of the inserting plate door 1 from the connecting gaps on the left side and the right side, and the sealing effect is further improved.

Referring to fig. 4, preferably, the wind pressure sealing mechanism further includes a third sealing element 8, the third sealing element 8 is disposed below the inserting plate door 1 along the horizontal direction, and the third sealing element 8 is connected with the bottom of the inner wall of the flue frame, so that the inserting plate door 1 is closed and then closely contacted with the third sealing element 8, thereby ensuring that the smoke does not leak to the leeward side of the inserting plate door from the bottom of the inserting plate door 1, and ensuring the sealing effect.

Claims

1. The utility model provides a prevent interior hourglass flue seal structure, its characterized in that, is including setting up picture peg door (1) in the flue frame, still includes wind pressure sealing mechanism, wind pressure sealing mechanism includes wind pressure cover (2) and induced duct (3), wind pressure cover (2) set up the windward side at picture peg door (1), wind pressure cover (2) around the inner wall setting of flue frame and with the inner wall of flue frame around forming wind pressure room (5), wind pressure room (5) port is just right with picture peg door (1), induced duct (3) and wind pressure room (5) intercommunication.

2. The inner leakage prevention flue sealing structure according to claim 1, wherein the wind pressure cover (2) is an L-shaped structure, one right-angle edge of the wind pressure cover (2) is vertically connected with the flue frame, and the other right-angle edge of the wind pressure cover (2) is opposite to the inserting plate door (1) and is spaced from the inserting plate door (1).

3. The inner leakage prevention flue sealing structure according to claim 2, wherein the clearance between the right-angle edge of the wind pressure cover (2) and the inserting plate door (1) is 10-20 mm.

4. The inner leakage prevention flue sealing structure according to claim 3, wherein the wind pressure sealing mechanism further comprises a first sealing member (6), the first sealing member (6) is vertically arranged, the first sealing member (6) comprises a first connecting member (61) and a first elastic member (62), one end of the first connecting member (61) is connected with the outer side of the wind pressure cover (2), and the other end of the first connecting member (61) is in close contact with the inserting plate door (1) through the first elastic member (62).

5. The inner leakage prevention flue sealing structure according to claim 4, wherein the wind pressure sealing mechanism further comprises a second sealing member (7), the second sealing member (7) is arranged in the same direction as the first sealing member (6), the second sealing member (7) is positioned inside the wind pressure chamber (5), the second sealing member (7) comprises a second connecting member and a second elastic member, one end of the second connecting member is connected with the flue frame, and the other end of the second connecting member is in close contact with the inserting plate door (1) through the second elastic member.

6. The inner leakage flue prevention seal structure according to claim 5, wherein the second seal (7) is further provided on a leeward side of the shutter door (1).

7. The inner leakage prevention flue sealing structure according to claim 6, wherein the included angle between the first sealing element (6) and the corresponding end face of the wind pressure cover (2) is 40-50 degrees, and the included angle between the second sealing element (7) and the corresponding end face of the flue frame is 40-50 degrees.

8. The inner leakage flue sealing structure is characterized in that the wind pressure sealing mechanism further comprises a third sealing element (8), the third sealing element (8) is connected with the flue frame along the horizontal direction, and the third sealing element (8) is positioned below the inserting plate door (1).