CN213207817U

CN213207817U - Low-low-temperature economizer capable of effectively retarding dust deposition

Info

Publication number: CN213207817U
Application number: CN202021956744.8U
Authority: CN
Inventors: 邓山; 李海滨; 吕海涛; 邱国梁
Original assignee: Huaneng Qinmei Ruijin Power Generation Co Ltd
Current assignee: Huaneng Qinmei Ruijin Power Generation Co Ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-05-14
Anticipated expiration: 2030-09-09

Abstract

The utility model relates to a coal-fired power generation field especially relates to a low temperature economizer that effectively slows down deposition, including the flue, the flue is connected with four branch pipes through dividing the tobacco pipe, be fixed with two heat abstractor around on the branch pipe respectively, heat abstractor contains multilayer heat absorption module, heat absorption module contains inlet tube and outlet pipe, the inlet tube is through setting up at the inside coiled pipe of branch pipe and going out water piping connection, evenly weld on the coiled pipe outer wall has H type fin, the inside heat absorption module one side of branch pipe all is fixed with the pulse soot blower, bottom still is fixed with detection device and the high temperature hygronom in the branch pipe and leaks. The water leakage detection device and the high-temperature hygronom in the branch pipe are used for monitoring the moisture and the humidity in the branch pipe, so that whether the coiled pipe in the branch pipe leaks or not can be effectively confirmed, the heat absorption device on the layer is isolated in time, the coiled pipe is maintained, and the phenomenon that dust is collected in the branch pipe due to the fact that the moisture in the branch pipe adsorbs dust in smoke is further avoided.

Description

Low-low-temperature economizer capable of effectively retarding dust deposition

[ technical field ] A method for producing a semiconductor device

The utility model relates to a coal-fired power generation field especially relates to a low temperature economizer that effectively slows down deposition.

[ background of the invention ]

The current coal-fired unit realizes ultralow emission in response to the national call requirements, and the unit completes the project transformation of the low-temperature economizer in sequence in recent years. After transformation, the low-temperature economizer generally has the problems of ash blockage and leakage, so that the resistance of a flue is increased, the output of an induced draft fan is increased, and an electric dust removal ash bucket accumulates ash, even the load is forcedly reduced or the machine is shut down for ash removal.

The utility model discloses it is not enough to solve prior art and research and propose.

[ Utility model ] content

The utility model aims at overcoming the shortcomings of the prior art and providing a low-temperature economizer which can effectively slow down the dust deposition.

The utility model discloses can realize through following technical scheme:

the utility model discloses a low temperature economizer of effectively slowing down deposition, including the flue stack, the flue stack is connected with four branch pipes through dividing the tobacco pipe, be fixed with two heat abstractor around on the branch pipe respectively, the heat abstractor contains multilayer heat absorption module, the heat absorption module contains inlet tube and outlet pipe, the inlet tube is through setting up at the inside coiled pipe of branch pipe and going out water piping connection, evenly weld on the coiled pipe outer wall has H type fin, the inside heat absorption module one side of branch pipe all is fixed with the pulse soot blower, bottom still is fixed with detection device and the high temperature hygrothermograph of leaking in the branch pipe. Before the boiler started, let in the high temperature hot water who faces the stove in the coiled pipe of branch pipe inside through the inlet tube, treat that the temperature in the coiled pipe reaches 80 degrees centigrade and switch the condensate water of this stove later, the boiler begins to ignite, and the flue gas that the burning produced enters into the branch pipe after passing through the main chimney in, high temperature flue gas and coiled pipe heat exchange carry out the heat exchange to the condensate water in the coiled pipe, reduce the temperature of flue gas through the heat exchange to the condensate water recovery after will rising temperature is used in production. The H-shaped fins are fixed on the outer peripheral side of the coiled pipe, and the H-shaped fins absorb heat in smoke and transfer the heat to the coiled pipe, so that the heat absorption efficiency of the coiled pipe can be effectively improved. After a period of time, the pulse soot blower is started, and the explosion acetylene gas is sprayed out by the pulse soot blower opposite to the coiled pipe, so that dust attached to the coiled pipe and the fins can be blown off, and further dust collection in the branch pipe is avoided. The water leakage detection device and the high-temperature hygronom in the branch pipe are used for monitoring the moisture and the humidity in the branch pipe, so that whether the coiled pipe in the branch pipe leaks or not can be effectively confirmed, the heat absorption device on the layer is isolated in time, the coiled pipe is maintained, and the phenomenon that dust is collected in the branch pipe due to the fact that the moisture in the branch pipe adsorbs dust in smoke is further avoided.

Compared with the prior art, the utility model has the advantages that:

1. before the boiler burner device starts ignition, high-temperature hot water is introduced into the serpentine pipe inside the branch pipe through the water inlet pipe, the occurrence of the condensation phenomenon of the outer wall of the serpentine pipe can be effectively avoided, so that dust in flue gas is effectively prevented from being absorbed after the condensation of the serpentine pipe, and the branch pipe is prevented from being blocked.

2. The H-shaped fins are fixed on the outer peripheral side of the coiled pipe, and the H-shaped fins absorb heat in smoke and transfer the heat to the coiled pipe, so that the heat absorption efficiency of the coiled pipe can be effectively improved.

3. When the boiler is in operation, the explosion acetylene gas sprayed by the pulse soot blower opposite to the coiled pipe can blow off dust attached to the coiled pipe and the fins, and further dust collection in the branch pipe is avoided.

4. The water leakage detection device arranged in the branch pipe and the high-temperature humidity meter are used for monitoring the moisture and the humidity in the branch pipe, so that whether the coiled pipe in the branch pipe leaks or not can be effectively confirmed, the coiled pipe can be maintained in time, and the phenomenon that dust is collected in the branch pipe due to the fact that the moisture in the branch pipe adsorbs dust in smoke is further avoided.

[ description of the drawings ]

The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is another angle structure diagram of the present invention;

FIG. 3 is a schematic view of the present invention with the branch tube removed;

in the figure: 1. a main flue; 2. a smoke distributing pipe; 3. a branch pipe; 4. a heat sink; 401. a water inlet pipe; 402. a water outlet pipe; 403. a serpentine tube; 404. a fin; 5. a pulse soot blower;

[ detailed description ] embodiments

The following detailed description of embodiments of the present invention is made with reference to the accompanying drawings:

as shown in fig. 1 to 3, the utility model discloses a low temperature economizer of effectively slowing down deposition, including flue 1, flue 1 is connected with four branch pipes 3 through dividing tobacco pipe 2, be fixed with two heat sink 4 around on the branch pipe 3 respectively, heat sink 4 contains multilayer heat absorption module, heat absorption module contains inlet tube 401 and outlet pipe 402, inlet tube 401 is connected with outlet pipe 402 through setting up at the inside coiled pipe 403 of branch pipe 3, evenly weld has H type fin 404 on the coiled pipe 403 outer wall, the inside heat sink module one side of branch pipe 3 all is fixed with pulse soot blower 5, bottom still is fixed with detection device and the high temperature hygrometer of leaking in the branch pipe 3. Before the boiler starts, let in the high temperature hot water who faces the stove through inlet tube 401 in the coiled pipe 403 of branch pipe 3 inside, treat that the temperature in the coiled pipe 403 reaches the condensate water that switches this stove behind 80 degrees centigrade, the boiler begins to ignite, the flue gas that the burning produced enters into in the branch pipe 3 behind the main chimney, high temperature flue gas and coiled pipe 403 heat exchange, carry out the heat exchange to the condensate water in the coiled pipe 403, reduce the temperature of flue gas through the heat exchange, and the condensate water recovery after will rising the temperature is used in production. The H-shaped fins 404 are fixed to the outer periphery of the serpentine tube 403, so that the H-shaped fins 404 absorb heat in the flue gas and transfer the heat to the serpentine tube 403, thereby effectively improving the heat absorption efficiency of the serpentine tube 403. After a period of time, the pulse soot blower 5 is started, and the explosion acetylene gas is ejected by the pulse soot blower 5 against the coil pipe 403, so that the dust attached to the coil pipe 403 and the fins 404 can be blown off, and further dust collection in the branch pipe 3 can be avoided. The water leakage detection device and the high-temperature humidity meter arranged in the branch pipe 3 are used for monitoring the moisture and the humidity in the branch pipe 3, whether the coiled pipe 403 in the branch pipe 3 leaks can be effectively confirmed, the heat absorption device 4 on the layer is isolated in time, the coiled pipe 403 is maintained, and the phenomenon that dust is collected in the branch pipe 3 due to the fact that the moisture in the branch pipe 3 adsorbs dust in smoke is further avoided.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many changes, modifications, substitutions and variations can be made to the embodiments without departing from the technical principles of the present invention, and these changes, modifications, substitutions and variations should also be considered as the protection scope of the present invention.

Claims

1. The low-temperature economizer capable of effectively retarding dust deposition comprises a main flue and is characterized in that the main flue is connected with four branch pipes through smoke distributing pipes, two heat absorbing devices are fixed on the branch pipes respectively in the front and at the back, each heat absorbing device comprises a plurality of layers of heat absorbing modules, each heat absorbing module comprises a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with the water outlet pipe through a coiled pipe arranged inside each branch pipe, H-shaped fins are uniformly welded on the outer wall of the coiled pipe, pulse dust blowers are fixed on one sides of the heat absorbing modules inside the branch pipes, and a water leakage detection device and a high-temperature humidity meter are further fixed at the bottom inside the branch pipes.