Three-way flue double-smoke baffle door device

Abstract

The utility model discloses a three-way flue double flue gas baffle door device which comprises a first flue gas baffle door and a second flue gas baffle door, the first flue gas baffle door is arranged at a flue gas bypass outlet of a three-way flue, and the second flue gas baffle door is arranged at a flue gas outlet of the three-way flue. The shapes of the first flue gas baffle door and the second flue gas baffle door are matched with the section of the outlet, a first rotating shaft is integrally arranged on the first flue gas baffle door, and a second rotating shaft is integrally arranged on the second flue gas baffle door; a first groove and a second groove are formed in the inner side wall of the three-way flue, and the shape of the first groove and the shape of the second groove are matched with the shape of the first smoke baffle door and the shape of the second smoke baffle door respectively; the smoke baffle door has the advantages that when the smoke baffle door is opened, smoke resistance does not exist during smoke circulation, and when the smoke baffle door is closed, the sealing performance is good.

Description

Technical Field

[0001] The utility model relates to a smoke damper door, in particular to a three-way smoke duct double smoke damper door device, belonging to the field of smoke damper doors. Background Art

[0002] In general, the entire power generation system of a gas turbine power plant is composed of three systems connected in series, namely, gas turbine, exhaust bypass system and waste heat boiler, which together constitute the main functional equipment of the gas turbine power plant. In the entire power generation system, the gas turbine is the main working equipment, the waste heat boiler is the main subsequent flue gas recycling equipment, and the bypass system is the intermediate equipment connecting and transitioning the gas turbine and the waste heat boiler. It mainly serves as a high-temperature flue gas switching channel and assumes the function of flue gas switching. Through the exhaust bypass system, the gas turbine can be operated independently of the waste heat boiler system. When the gas turbine is running, the waste heat boiler can be in an isolated state. The existing flue exhaust bypass methods include gate valves, butterfly valves, single flue gas damper doors, etc. The gate valve is used to set up a gate valve in the bypass flue and the flue leading to the boiler side. When the gas turbine needs to operate independently, the gate valve leading to the boiler side flue is closed, and the gate valve of the bypass flue is opened; when combined cycle operation is required, the gate valve of the bypass flue is closed, and the gate valve leading to the boiler side flue is opened. The problem with this setting is that the sliding plate valve has a large moving space, which requires a high space layout and a large investment. The butterfly valve is used to set up a butterfly valve in the bypass flue and the flue leading to the boiler. When the butterfly valve plate on the main pipeline is driven by the configured motor, the valve plate on the bypass pipeline is driven synchronously by the motor through the connecting rod mechanism. This drives the butterfly plate to rotate, so that the butterfly plate on one side is closed and the butterfly plate on the other side is opened. The problem with this setting is that the butterfly valve is placed in the pipeline, which occupies the pipeline space and increases the exhaust resistance. Although the single flue gas damper door structure is simple, the drive device is complicated to set up. Summary of the invention

[0003] The utility model aims to design a three-way flue double smoke damper door device, when the smoke damper door is opened, there is no smoke resistance when the smoke flows, and when the smoke damper door is closed, the sealing performance is good.

[0004] The technical solution of the utility model is:

[0005] A three-way flue double smoke damper door device comprises a first smoke damper door and a second smoke damper door, wherein the first smoke damper door is arranged at the smoke bypass outlet of the three-way flue, and the second smoke damper door is arranged at the smoke outlet of the three-way flue, and the shapes are respectively adapted to the cross-sections of the outlets, the first smoke damper door is integrally provided with a first rotating shaft, and the second smoke damper door is integrally provided with a second rotating shaft; the inner side wall of the three-way flue is provided with a first groove and a second groove, and the shapes of the first groove and the second groove are respectively matched with the shapes of the first smoke damper door and the second smoke damper door, and when the first smoke damper door and the second smoke damper door are in an initial state, the first smoke damper door and the second smoke damper door are respectively arranged in the first groove and the second groove, and are flush with the inner side wall of the three-way flue.

[0006] A first gear is disposed at one end of the first rotating shaft; a second gear is disposed at one end of the second rotating shaft; and the first gear and the second gear are connected via a chain transmission.

[0007] A manual wheel is provided at one end of the second rotating shaft.

[0008] The second rotating shaft is drivingly connected to the motor via a coupling.

[0009] The utility model has the following beneficial effects: when the smoke damper door is opened, there is no smoke resistance when the smoke circulates, and when the smoke damper door is closed, the sealing performance is good.

[0010] The utility model is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of a three-way flue double smoke damper door device according to an embodiment of the utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the smoke damper door of the utility model embodiment;

[0013] Figure 3 It is a schematic structural diagram of a transmission chain according to an embodiment of the utility model. DETAILED DESCRIPTION

[0014] The preferred embodiments of the present invention are described below. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. Example

[0015] like Figure 1-3As shown, a three-way flue double smoke damper door device includes a first smoke damper door 1 and a second smoke damper door 2, the first smoke damper door 1 is arranged at the smoke bypass outlet of the three-way flue, the second smoke damper door 2 is arranged at the smoke outlet of the three-way flue, and the shapes are respectively adapted to the cross-sections of the outlets, the first smoke damper door 1 is integrally provided with a first rotating shaft 3, and the second smoke damper door 2 is integrally provided with a second rotating shaft 4; the inner side wall of the three-way flue is provided with a first groove and a second groove, the shapes of the first groove 13 and the second groove 14 are respectively matched with the shapes of the first smoke damper door 1 and the second smoke damper door 2, when the first smoke damper door 1 and the second smoke damper door 2 are in the initial state, the first smoke damper door 1 and the second smoke damper door 2 are respectively arranged in the first groove 13 and the second groove 14, and are flush with the inner side wall of the three-way flue.

[0016] One end of the first rotating shaft 3 is key-connected with the first gear 7;

[0017] One end of the second rotating shaft 4 is key-connected to the second gear 8;

[0018] The first gear 7 and the second gear 8 are connected by a chain 5;

[0019] One end of the second rotating shaft 4 is connected to a manual wheel 9 key, thereby realizing manual opening and closing.

[0020] The second rotating shaft 4 is transmission-connected to the motor 6 via a coupling, thereby realizing electric opening and closing.

Claims

1. A three-way flue double smoke damper door device, characterized in that: It comprises a first smoke damper door and a second smoke damper door, the first smoke damper door is arranged at the smoke bypass outlet of the three-way flue, the second smoke damper door is arranged at the smoke outlet of the three-way flue, and the shapes are respectively adapted to the cross-sections of the outlets, the first smoke damper door is integrally provided with a first rotating shaft, and the second smoke damper door is integrally provided with a second rotating shaft; the inner side wall of the three-way flue is provided with a first groove and a second groove, the shapes of the first groove and the second groove are respectively matched with the shapes of the first smoke damper door and the second smoke damper door, when the first smoke damper door and the second smoke damper door are in the initial state, the first smoke damper door and the second smoke damper door are respectively arranged in the first groove and the second groove, and are flush with the inner side wall of the three-way flue.

2. A three-way flue double smoke damper door device according to claim 1, characterized in that: A first gear is disposed at one end of the first rotating shaft; a second gear is disposed at one end of the second rotating shaft; and the first gear and the second gear are connected via a chain transmission.

3. A three-way flue double smoke damper door device according to claim 1, characterized in that: A manual wheel is provided at one end of the second rotating shaft.

4. A three-way flue double smoke damper door device according to claim 1, characterized in that: The second rotating shaft is drivingly connected to the motor via a coupling.

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