WO2022077840A1

WO2022077840A1 - Device for recovering waste heat from mechanical apparatus

Info

Publication number: WO2022077840A1
Application number: PCT/CN2021/078346
Authority: WO
Inventors: 瓮玉山
Original assignee: 苏州赛荣建筑装饰工程有限公司
Priority date: 2021-02-28
Filing date: 2021-02-28
Publication date: 2022-04-21

Abstract

Disclosed is a device for recovering waste heat from a mechanical apparatus, the device comprising a body, a base and an overhauling window, wherein the base is fixedly mounted at the bottom of the body; the overhauling window is fixedly provided in a side wall of the body; a gas collection pump is fixedly mounted at the bottom of one end of the body; a gas filter is fixedly mounted at one end of the bottom of an inner cavity of the body, and the gas filter is connected to a gas output end of the gas collection pump by means of a pipeline; filter cotton is fixedly mounted in an inner cavity of the gas filter; an activated carbon layer is fixedly mounted on one side of the filter cotton; a check valve is fixedly connected to the other end of the gas filter; a heat exchanger is fixedly mounted at the other end of the inner cavity of the body; and a gas intake pipe is fixedly mounted at the bottom of one end of the heat exchanger. The present utility model is scientific and rational in terms of structure and is safe and convenient to use, and can filter out impurities in gas during the heat recovery process, so as to prevent the impurities from blocking a heat exchange apparatus and to recover heat more thoroughly, thus achieving a better use effect.

Description

A device for recycling waste heat of mechanical equipment

technical field

The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery device for mechanical equipment.

Background technique

It is a device that transfers part of the heat of a hot fluid to a cold fluid, also known as a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial productions. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers, etc., and are widely used. . For example, the PTFE heat exchanger for low temperature in the power plant is a new type of equipment for waste heat recovery in the power plant to reduce the exhaust gas temperature. The use of fluoroplastic heat exchanger can prevent acid corrosion and reduce the flue gas temperature to less than 100 degrees. Zhengzhou University of Technology has successfully developed the PTFE (F-4) tube sheet limited expansion pressure heating welding process, which solves the key technology of connecting fluoroplastic pipes and tube sheets. Subsequently, various types of domestic heat exchangers have been produced. It has been put into practical production application and achieved good results.

During the heat recovery process of the existing mechanical equipment waste heat recovery device, the impurities in the gas cannot be filtered, and the impurities will block the heat exchange heat backup, and at the same time, the heat recovery is not complete, and there is still a large amount of heat energy. Cannot be recycled.

Utility model content

The purpose of the present invention is to provide a waste heat recovery device for mechanical equipment to solve the problems raised in the above background technology.

In order to solve the above technical problems, the utility model provides the following technical solutions: a device for recycling waste heat of mechanical equipment, comprising a body, a base and an inspection window, the base is fixedly installed at the bottom of the body, and the side wall of the body is fixedly provided with an inspection window A gas collecting pump is fixedly installed at the bottom of one end of the body, and a gas filter is fixedly installed at one end of the bottom of the inner cavity of the body, and the gas filter is connected with the gas outlet of the gas collecting pump through a pipeline, and the inner cavity of the gas filter is fixedly installed with a gas filter. Filter cotton, one side of the filter cotton is fixedly installed with an activated carbon layer, the other end of the gas filter is fixedly connected with a check valve, the other end of the body cavity is fixedly installed with a heat exchanger, and the bottom of one end of the heat exchanger is fixed The air inlet pipe is fixedly installed, and one end of the air inlet pipe is connected with the check valve. The hot gas can be collected by the cooperation of the air collecting pump and the air guide pipe. The gas is injected into the gas filter, and the filter cotton and activated carbon layer are arranged in the gas filter. , The large particle dust in the gas can be filtered through the filter cotton, and the irritating gas molecules of the gas can be absorbed by the activated carbon layer, which can improve the cleanliness of the gas. The inner cavity of the heat exchanger conducts heat exchange through full contact between the gas and the water molecules, which can quickly absorb the heat in the gas, thereby realizing the heating of the water molecules. After the water is heated, it is discharged from the drain pipe, and the gas after heat absorption passes through The No. 1 exhaust pipe is discharged into the heat collecting box, and the solution in the heat collecting box can be heated by the gas, so as to realize the secondary recovery of the heat of the gas, which can effectively improve the quality of heat recovery. The gas passes through the No. 2 exhaust. The pipe is drained, the drain valve is opened, and the solution can be pumped out through the drain pump.

Preferably, the air inlet end of the air collecting pump is fixedly connected with an air duct, the surface of the air duct is fixedly covered with thermal insulation cotton, and the surface of the air duct is covered with thermal insulation cotton. Reduce heat loss.

Preferably, a water inlet pipe is fixedly installed on the top of one end of the heat exchanger, and the water inlet pipe is connected with the water source, and water can be injected into the heat exchanger.

Preferably, a drain pipe is fixedly installed at the bottom of one end of the heat exchanger, and the aqueous solution after heat exchange can be discharged through the drain pipe.

Preferably, a No. 1 exhaust pipe is fixedly installed on the top of one end of the heat exchanger, and the No. 1 exhaust pipe can discharge the heat-exchanged gas.

Preferably, a heat collecting box is fixedly installed on the top of the heat exchanger, and one side of the heat collecting box is connected to the No. 1 exhaust pipe, and the heat collecting box can perform secondary heat recovery on the gas.

Preferably, a No. 2 exhaust pipe is fixedly connected to the top of the heat collecting box, and the No. 2 exhaust pipe is located on the upper surface of the body, and the No. 2 exhaust pipe can discharge gas.

Preferably, a water injection pipe is fixedly installed on one side of the No. 2 exhaust pipe, and water can be injected into the heat collecting box through the water injection pipe.

Preferably, a drain pump is fixedly installed at one end of the heat collecting box, and the heated aqueous solution can be discharged by turning on the drain pump.

Preferably, one end of the drain pump is fixedly connected with a drain valve through a pipeline, the drain valve is located above the water inlet pipe, and the drain valve can close the water pipe.

The beneficial effects are:

1. The gas is injected into the gas filter, and the gas filter is provided with a filter cotton and an activated carbon layer. The large particle dust in the gas can be filtered through the filter cotton, and the irritating gas molecules of the gas can be filtered through the activated carbon layer. Absorption can improve the cleanliness of the gas.

2. The gas is injected into the inner cavity of the heat exchanger through the intake pipe, and the heat is exchanged through the full contact between the gas and the water molecules in the inner cavity of the heat exchanger, which can quickly absorb the heat in the gas, thereby realizing the heating of the water molecules. After the water is heated, it is discharged from the drain pipe, and the gas after heat absorption is discharged into the heat collecting box through the No. 1 exhaust pipe. The solution in the heat collecting box can be heated by the gas, thereby realizing the secondary recovery of the gas heat. It can effectively improve the quality of heat recovery.

Description of drawings

Fig. 1 is the overall structure schematic diagram;

Fig. 2 is a schematic diagram of the internal structure;

Fig. 3 is the structural representation of gas filter;

Figure 4 is a schematic diagram of the structure of the heat exchanger;

In the figure: 1. body; 101, base; 102, inspection window; 2, air collecting pump; 201, air duct; 202, insulation cotton; 203, gas filter; 204, filter cotton; 205, activated carbon layer; Reverse valve; 3, heat exchanger; 301, air inlet pipe; 302, water inlet pipe; 303, drain pipe; 304, No. 1 exhaust pipe; 4, heat collecting box; 401, water injection pipe; 402, No. 2 exhaust pipe ; 403, drain pump; 404, drain valve.

Detailed ways

1-4, the present invention provides the following technical solutions: comprising a body 1, a base 101 and an inspection window 102, the base 101 is fixedly installed at the bottom of the body 1, and an inspection window 102 is fixedly opened on the side wall of the body 1, A gas collecting pump 2 is fixedly installed at the bottom of one end of the body 1, and a gas filter 203 is fixedly installed at one end of the bottom of the inner cavity of the body 1, and the gas filter 203 is connected to the gas outlet end of the gas collecting pump 2 through a pipeline. A filter cotton 204 is fixedly installed in the inner cavity of 203, an activated carbon layer 205 is fixedly installed on one side of the filter cotton 204, a check valve 206 is fixedly connected to the other end of the gas filter 203, and the other end of the inner cavity of the body 1 is fixedly installed There is a heat exchanger 3, an air inlet pipe 301 is fixedly installed at the bottom of one end of the heat exchanger 3, and one end of the air inlet pipe 301 is connected with the check valve 206. It is injected into the gas filter 203. The gas filter 203 is provided with a filter cotton 204 and an activated carbon layer 205. The filter cotton 204 can filter the large particles of dust in the gas, and the activated carbon layer 205 can be used to irritate the gas. The absorption of gas molecules can improve the cleanliness of the gas. The gas is injected into the inner cavity of the heat exchanger 3 through the air inlet pipe 301. In the inner cavity of the heat exchanger 3, the gas is fully contacted with the water molecules for heat exchange, which can reduce the heat in the gas. Rapid absorption is carried out to achieve heating of water molecules. After the water is heated, it is discharged from the drain pipe 303. The gas after heat absorption is discharged into the heat collecting box 4 through the No. 1 exhaust pipe 304, and the heat can be collected by the gas. The solution in the box 4 is heated, so as to realize the secondary recovery of the heat of the gas, which can effectively improve the quality of the heat recovery. The gas is discharged through the No. 2 exhaust pipe 402, the drain valve 404 is opened, and the solution can be pumped out through the drain pump 403. .

An air duct 201 is fixedly connected to the air inlet end of the air collecting pump 2. The surface of the air duct 201 is fixedly covered with thermal insulation cotton 202, and the surface of the air duct 201 is covered with thermal insulation cotton 202. During the conveying process, the loss of heat is reduced.

A water inlet pipe 302 is fixedly installed on the top of one end of the heat exchanger 3 , and the water inlet pipe 302 is connected with the water source, and water can be injected into the heat exchanger 3 .

A drain pipe 303 is fixedly installed at the bottom of one end of the heat exchanger 3, and the aqueous solution after heat exchange can be discharged through the drain pipe 303.

A No. 1 exhaust pipe 304 is fixedly installed on the top of one end of the heat exchanger 3 , and the No. 1 exhaust pipe 304 can discharge the heat-exchanged gas.

A heat collecting box 4 is fixedly installed on the top of the heat exchanger 3, and one side of the heat collecting box 4 is connected with the No. 1 exhaust pipe 304, and the heat collecting box 4 can perform secondary heat recovery for the gas.

A No. 2 exhaust pipe 402 is fixedly connected to the top of the heat collecting box 4 , and the No. 2 exhaust pipe 402 is located on the upper surface of the body 1 , and the No. 2 exhaust pipe 402 can discharge gas.

A water injection pipe 401 is fixedly installed on one side of the No. 2 exhaust pipe 402 , and water can be injected into the heat collecting tank 4 through the water injection pipe 401 .

A drain pump 403 is fixedly installed at one end of the heat collecting box 4 , and the heated aqueous solution can be discharged by turning on the drain pump 403 .

One end of the drain pump 403 is fixedly connected with a drain valve 404 through a pipeline, and the drain valve 404 is located above the water inlet pipe 302 , and the drain valve 404 can close the water pipe.

The working principle of the present utility model: a base 101 is fixedly installed at the bottom of the body 1, and the base 101 can make the body 1 more stable during operation. An inspection window 102 is provided on one side of the body 1. After the inspection window 102 is opened, the body 1 can be opened. The waste heat recovery equipment in the inner cavity is repaired, which is more convenient to use. When installing the body 1, one end of the air duct 201 is connected to the mechanical hot air discharge end. The surface of the air duct 201 is covered with thermal insulation cotton 202. In the process of conveying the hot gas, the loss of heat can be reduced, and the water inlet pipe 302 can be connected to the water source at the same time. The gas filter 203 is provided with a filter cotton 204 and an activated carbon layer 205. The filter cotton 204 can filter the large particles of dust in the gas, and at the same time, the activated carbon layer 205 can absorb the irritating gas molecules of the gas, which can improve the gas. Cleanliness, the gas is injected into the inner cavity of the heat exchanger 3 through the air inlet pipe 301, and the heat exchange is carried out through the full contact between the gas and the water molecules in the inner cavity of the heat exchanger 3, which can quickly absorb the heat in the gas, thereby realizing the water Molecular heating, the water is heated and discharged from the drain pipe 303, and the gas after heat absorption is discharged into the heat collecting box 4 through the No. 1 exhaust pipe 304, and the solution in the heat collecting box 4 can be heated by the gas, thereby The secondary recovery of gas heat can effectively improve the quality of heat recovery. The gas is discharged through the No. 2 exhaust pipe 402, the drain valve 404 is opened, and the solution can be pumped out through the drain pump 403.

Claims

A device for recycling waste heat of mechanical equipment, comprising a body (1), a base (101) and an inspection window (102), a base (101) is fixedly installed at the bottom of the body (1), and a side wall of the body (1) is fixed An inspection window (102) is provided, and is characterized in that: a gas collecting pump (2) is fixedly installed at the bottom of one end of the body (1), and a gas filter (203) is fixedly installed at one end of the inner cavity of the body (1), and The gas filter (203) is connected to the gas outlet end of the gas collecting pump (2) through a pipeline, and a filter cotton (204) is fixedly installed in the inner cavity of the gas filter (203), and one side of the filter cotton (204) is fixedly installed with a filter cotton (204). An activated carbon layer (205), a non-return valve (206) is fixedly connected to the other end of the gas filter (203), and a heat exchanger (3) is fixedly installed at the other end of the inner cavity of the body (1). An air inlet pipe (301) is fixedly installed at the bottom of one end of the device (3), and one end of the air inlet pipe (301) is connected with a check valve (206).
A device for recycling waste heat of mechanical equipment according to claim 1, characterized in that: an air duct (201) is fixedly connected to the air inlet end of the air collecting pump (2), and a surface of the air duct (201) is fixedly covered Covered with thermal insulation (202).
A device for recycling waste heat of mechanical equipment according to claim 1, characterized in that: a water inlet pipe (302) is fixedly installed on the top of one end of the heat exchanger (3).
A device for recycling waste heat of mechanical equipment according to claim 3, characterized in that: a drain pipe (303) is fixedly installed at the bottom of one end of the heat exchanger (3).
A device for recycling waste heat of mechanical equipment according to claim 4, characterized in that a No. 1 exhaust pipe (304) is fixedly installed on the top of one end of the heat exchanger (3).
A device for recycling waste heat of mechanical equipment according to claim 5, characterized in that a heat collecting box (4) is fixedly installed on the top of the heat exchanger (3), and one side of the heat collecting box (4) is connected to a No. exhaust pipe (304) is connected.
A device for recycling waste heat of mechanical equipment according to claim 6, characterized in that: the top of the heat collecting box (4) is fixedly connected with a No. 2 exhaust pipe (402), and the No. 2 exhaust pipe (402) It is located on the upper surface of the body (1).
A device for recycling waste heat of mechanical equipment according to claim 7, characterized in that: a water injection pipe (401) is fixedly installed on one side of the No. 2 exhaust pipe (402).
A device for recycling waste heat of mechanical equipment according to claim 6, characterized in that: a drain pump (403) is fixedly installed at one end of the heat collecting box (4).
A device for recycling waste heat of mechanical equipment according to claim 9, characterized in that: one end of the drain pump (403) is fixedly connected with a drain valve (404) through a pipeline, and the drain valve (404) is located in the water inlet pipe (302). ) above.