CN214470150U

CN214470150U - Temperature equalizer for exhausting smoke and storing heat in electric furnace

Info

Publication number: CN214470150U
Application number: CN202120685645.9U
Authority: CN
Inventors: 郑岩
Original assignee: Wuxi Dogfang Environmental Engineering Design Institute Co ltd
Current assignee: Wuxi Dogfang Environmental Engineering Design Institute Co ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-10-22
Anticipated expiration: 2031-04-06

Abstract

The utility model discloses a temperature equalizer for discharging smoke and storing heat in an electric furnace, which comprises a body, a temperature monitor and a temperature control device, wherein a smoke inlet tube is arranged above the body, a smoke outlet tube is arranged below the body, and the temperature monitor is arranged in the smoke inlet tube; a partition plate is vertically arranged in the body, and the left side of the partition plate is a low-temperature cylinder while the right side is a high-temperature cylinder; the top end of the low-temperature cylinder is provided with a low-temperature electric valve, the top end of the high-temperature cylinder is provided with a high-temperature electric valve, the inner disc of the high-temperature cylinder is provided with a uniform-temperature water pipe, and the uniform-temperature water pipe extends out of the body and is provided with a water outlet; the high-temperature cylinder is externally provided with a water supply pipe, each layer of the uniform-temperature water pipe is communicated with the water supply pipe, and the pipeline is sequentially provided with a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve and a fifth electromagnetic valve from bottom to top. The utility model has the advantages of simple structure, can alleviate the sudden rising and falling of flue gas temperature, and can prolong the service life of equipment.

Description

Temperature equalizer for exhausting smoke and storing heat in electric furnace

Technical Field

The utility model relates to a heating equipment technical field, more specifically relate to a temperature equalizer is used in heat accumulation of arranging cigarette in electric stove.

Background

The steel industry is a household with great environmental pollution and energy consumption, and flue gas dust removal and waste heat recovery are one of the strategies for protecting the environment and saving energy in the steel industry. The electric furnace generates a large amount of high-temperature flue gas containing dust and CO in the production process, the average amount of the flue gas generated per ton of steel is 18-20kg, the heat carried away with the flue gas is about 150M, and the energy is seriously wasted and the environment is polluted. With the rapid and comprehensive development of electric furnace technology, the flue gas waste heat recovery and utilization are developed.

The flue gas waste heat recovery system is used for recovering and storing the flue gas waste heat, so that the waste heat can be fully utilized, secondary energy can be fully utilized, and the method is a good energy-saving method; especially for the current energy shortage situation, the method has more practical significance and has wide prospect. However, when the temperature difference between the front and the rear of the flue gas in the electric furnace is large, the equipment is easy to be unstable, the service life of the equipment is shortened, and the waste heat recovery is incomplete. Therefore, there is a need for a temperature equalizer for exhaust and heat storage in an electric furnace, which reduces the temperature difference of flue gas before the flue gas is subjected to a waste heat recovery system.

Disclosure of Invention

The utility model discloses the technical problem that needs to solve provides a temperature equalizer for exhaust fume heat accumulation in electric stove to when the temperature differed greatly around solving the flue gas in the electric stove, make equipment unstable easily, cause the problem that equipment life shortens, with reduce the front and back difference in temperature of flue gas before waste heat recovery.

In order to solve the technical problem, the utility model adopts the following technical proposal.

A temperature equalizer for discharging smoke and storing heat in an electric furnace comprises a body which is in a cylindrical shape, a smoke inlet pipe is arranged above the body, a smoke outlet pipe is arranged below the body, and a temperature monitor for detecting the temperature of smoke is arranged in the smoke inlet pipe; a partition plate for evenly dividing the body into a left part and a right part is vertically arranged in the body, and the left side of the partition plate is a low-temperature cylinder while the right side of the partition plate is a high-temperature cylinder; the top end of the low-temperature cylinder is provided with a low-temperature electric valve for controlling opening and closing, the top end of the high-temperature cylinder is provided with a high-temperature electric valve for controlling opening and closing, the inner disc of the high-temperature cylinder is provided with a uniform-temperature water pipe for cooling flue gas in the high-temperature cylinder, and the uniform-temperature water pipe is provided with a plurality of layers, wherein the lowest layer of water pipe extends out of the body and is provided with a water outlet; a water supply pipe which is vertically arranged and is communicated with the temperature-uniforming water pipe is arranged outside the high-temperature cylinder, each layer of the temperature-uniforming water pipe is communicated with the water supply pipe through a pipeline, and a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve and a fifth electromagnetic valve are sequentially arranged on the pipeline from bottom to top; the output end of the temperature monitor is connected with a PLC controller, and the output end of the PLC controller is respectively connected with controlled ends of a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve, a high-temperature electric valve and a low-temperature electric valve.

Further optimize technical scheme, the water inlet of delivery pipe is located the lower extreme.

Due to the adoption of the technical scheme, the utility model has the following technical progress.

The utility model provides a temperature equalizer is used in exhaust smoke heat accumulation in electric stove according to the temperature of flue gas before the heat recovery, shunts the flue gas, cools down through the high temperature flue gas of even temperature water pipe in to a high temperature section of thick bamboo, and the flue gas after will cooling is discharged through a chimney, can carry out the recovery and the storage of flue gas waste heat. The utility model has the advantages of simple structure, can alleviate the sudden rising and falling of flue gas temperature, and can prolong the service life of equipment.

Drawings

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

wherein: 1. the device comprises a body, 2, a high-temperature cylinder, 3, a low-temperature cylinder, 4, a partition board, 5, a smoke inlet cylinder, 6, a smoke outlet cylinder, 7, a temperature monitor, 8, a high-temperature electric valve, 9, a low-temperature electric valve, 10, a temperature-equalizing water pipe, 101, a water supply pipe, 102, a first electromagnetic valve, 103, a second electromagnetic valve, 104, a third electromagnetic valve, 105, a fourth electromagnetic valve, 106, a fifth electromagnetic valve, 107 and a water outlet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The temperature equalizer for discharging smoke and storing heat in an electric furnace is shown in a combined figure 1 and comprises a body 1, a high-temperature cylinder 2, a low-temperature cylinder 3, a partition plate 4, a smoke inlet cylinder 5, a smoke outlet cylinder 6, a temperature monitor 7, a high-temperature electric valve 8, a low-temperature electric valve 9, a temperature equalizing water pipe 10, a water supply pipe 101, a first electromagnetic valve 102, a second electromagnetic valve 103, a third electromagnetic valve 104, a fourth electromagnetic valve 105, a fifth electromagnetic valve 106 and a water outlet 107.

The body 1 is cylindrical, and a heat preservation layer for preventing heat loss is arranged outside the body 1. A smoke inlet pipe 5 is arranged above the body 1, and a smoke outlet pipe 6 is arranged below the body; a temperature monitor 7 is arranged in the smoke inlet pipe 5 and used for detecting the temperature of smoke. The vertical division board 4 that is equipped with in the body 1 for on average divide into about body 1 two parts, the left side of division board 4 is a low temperature section of thick bamboo 3, the right side is a high temperature section of thick bamboo 2. The top end of the low-temperature cylinder 3 is provided with a low-temperature electric valve 9 for controlling the opening and closing of the low-temperature cylinder 3; the top end of the high-temperature cylinder 2 is provided with a high-temperature electric valve 8 for controlling the opening and closing of the high-temperature cylinder 2.

The inner disk of the high-temperature cylinder 2 is provided with a uniform-temperature water pipe 10 for cooling the flue gas in the high-temperature cylinder 2. The uniform temperature water pipe 10 is provided with a plurality of layers, and the lowest layer of water pipe extends out of the body 1 and is set as a water outlet 107.

The high-temperature cylinder 2 is externally provided with a water supply pipe 101 communicated with the uniform-temperature water pipe 10, the water supply pipe 101 is vertically arranged, and each layer of the uniform-temperature water pipe 10 is communicated with the water supply pipe 101 through a pipeline. The water supply pipe 101 has an inlet at a lower end. A first electromagnetic valve 102, a second electromagnetic valve 103, a third electromagnetic valve 104, a fourth electromagnetic valve 105 and a fifth electromagnetic valve 106 are sequentially arranged on the pipeline from bottom to top.

The output end of the temperature monitor 7 is connected with a PLC controller, and the output end of the PLC controller is respectively connected with the controlled ends of a first electromagnetic valve 102, a second electromagnetic valve 103, a third electromagnetic valve 104, a fourth electromagnetic valve 105, a fifth electromagnetic valve 106, a high-temperature electric valve 8 and a low-temperature electric valve 9.

The utility model discloses when in actual use, the flue gas gets into through advancing chimney 5, advances the temperature monitoring ware 7 in the chimney 5 and detects the temperature of flue gas, and the temperature value that temperature monitoring ware 7 will detect out transmits the PLC controller. When the temperature value is higher than the recovery range of the waste heat recovery system, the PLC controller controls the high-temperature electric valve 8 to be opened and the low-temperature electric valve 9 to be closed. The PLC controls the opening and closing of a first electromagnetic valve 102, a second electromagnetic valve 103, a third electromagnetic valve 104, a fourth electromagnetic valve 105 and a fifth electromagnetic valve 106 on the uniform temperature water pipe 10 according to the temperature of the flue gas. When the temperature of the flue gas in the high-temperature cylinder 2 is relatively low, only the first electromagnetic valve 102 with the lowest height is opened, and the circulation of a lower water level in the uniform-temperature water pipe 10 is kept; when the temperature of the flue gas in the high-temperature cylinder 2 is higher, the PLC controls the rising of the water level in the uniform-temperature water pipe 10 by controlling the opening and closing of the first electromagnetic valve 102, the second electromagnetic valve 103, the third electromagnetic valve 104, the fourth electromagnetic valve 105 and the fifth electromagnetic valve 106, so that the temperature discharged from the flue gas outlet cylinder 6 is not too high, and the phenomenon that the temperature difference between the front and the rear of the flue gas is large due to the too high temperature of the flue gas in the waste heat recovery system is avoided.

When the temperature detected by the temperature monitor 7 is in a normal range, the PLC controller controls the high-temperature electric valve 8 to be closed and the low-temperature electric valve 9 to be opened; the flue gas directly enters the low-temperature cylinder 3 from the flue gas inlet cylinder 5 and then is discharged from the flue gas outlet cylinder 6.

Claims

1. A temperature equalizer for discharging smoke and storing heat in an electric furnace is characterized in that: comprises a cylindrical body (1) with a smoke inlet pipe (5) arranged above and a smoke outlet pipe (6) arranged below, and a temperature monitor (7) for detecting the temperature of smoke is arranged in the smoke inlet pipe (5); a partition plate (4) for evenly dividing the body (1) into a left part and a right part is vertically arranged in the body (1), the left side of the partition plate (4) is provided with a low-temperature cylinder (3), and the right side of the partition plate is provided with a high-temperature cylinder (2); the top end of the low-temperature cylinder (3) is provided with a low-temperature electric valve (9) for controlling opening and closing, the top end of the high-temperature cylinder (2) is provided with a high-temperature electric valve (8) for controlling opening and closing, the inner disc of the high-temperature cylinder (2) is provided with a uniform-temperature water pipe (10) for cooling flue gas in the high-temperature cylinder (2), and the uniform-temperature water pipe (10) is provided with a plurality of layers of water pipes with the lowest layer, extends out of the body (1) and is provided with a water outlet (107); a water supply pipe (101) which is vertically arranged and is communicated with the temperature-uniforming water pipe (10) is arranged outside the high-temperature barrel (2), each layer of the temperature-uniforming water pipe (10) is communicated with the water supply pipe (101) through a pipeline, and a first electromagnetic valve (102), a second electromagnetic valve (103), a third electromagnetic valve (104), a fourth electromagnetic valve (105) and a fifth electromagnetic valve (106) are sequentially arranged on the pipeline from bottom to top; the output end of the temperature monitor (7) is connected with a PLC controller, and the output end of the PLC controller is respectively connected with the controlled ends of a first electromagnetic valve (102), a second electromagnetic valve (103), a third electromagnetic valve (104), a fourth electromagnetic valve (105), a fifth electromagnetic valve (106), a high-temperature electric valve (8) and a low-temperature electric valve (9).

2. The temperature equalizer for discharging smoke and storing heat in an electric furnace according to claim 1, characterized in that: the water inlet of the water supply pipe (101) is positioned at the lower end.