Acid-resistant and high-temperature-resistant gas and liquid heat exchange device with flushing function

Abstract

The utility model provides an acid-resistant and high-temperature-resistant gas and liquid heat exchange device with a flushing function, and relates to the technical field of heat exchange devices, the acid-resistant and high-temperature-resistant gas and liquid heat exchange device comprises a heat exchange device and a cleaning alkali liquor PP liquid storage tower, a titanium alloy pipeline is installed in the heat exchange device, and spiral nozzles are installed on the two sides of an inner cavity of the heat exchange device. The water inlet ends of the two spiral nozzles are connected with flow dividing pipelines, and one ends of the two flow dividing pipelines are connected with a water supply pipeline. According to the utility model, gas heated by a large amount of heat generated by the heating electric furnace in the ventilation cabinet enters the heat exchange device through the flue gas inlet, and low-temperature liquid enters the titanium alloy pipeline through the low-temperature liquid medium inlet, exchanges heat with the heating gas in the heat exchange device for heating, and flows back through the high-temperature liquid medium outlet; and the heat is transmitted to an external liquid circulating medium system through a titanium alloy pipeline, and the heat is indirectly converted into heating heat energy of outdoor low-temperature fresh air or indoor low-temperature circulating air.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange devices, in particular to a gas and liquid heat exchange device with self-flushing, acid resistance and high temperature resistance. Background Art

[0002] In many metallurgical testing and chemical analysis laboratories, a fume hood is needed to use an electric furnace to heat strong acid to melt samples. The exhaust volume of the fume hood is relatively large to discharge toxic and harmful acidic gases out of the room. Appropriate outdoor air is also needed to supplement the laboratory to achieve a corresponding balance in the air pressure in the laboratory.

[0003] In the prior art, in the north where the temperature is very low in winter, if a large amount of outdoor low-temperature air is added, the indoor temperature will drop very low, making laboratory operators feel very uncomfortable. The large amount of heat generated by the heating furnace in the fume hood is discharged to the outside along with toxic and harmful gases, causing a large amount of heat loss. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a self-flushing acid-resistant and high-temperature-resistant gas and liquid heat exchange device, comprising: a heat exchange device and a cleaning alkali solution PP liquid storage tower, a titanium alloy pipe is installed inside the heat exchange device, one end of the titanium alloy pipe passes through the surface of the heat exchange device and is connected to a low-temperature liquid medium inlet, and the other end of the titanium alloy pipe passes through the surface of the heat exchange device and is connected to a high-temperature liquid medium outlet, spiral nozzles are installed on both sides of the inner cavity of the heat exchange device, the water inlet ends of the two spiral nozzles are connected to a diversion pipe, and one end of the two diversion pipes is connected to a water supply pipe;

[0006] The titanium alloy pipeline includes four S-shaped curved bend tubes and three U-shaped curved bend tubes, one side of two adjacent S-shaped curved bend tubes are butt-jointed to the two ends of one of the U-shaped curved bend tubes, and a plurality of titanium alloy fixed ribs are fixedly installed on the surfaces of the four S-shaped curved bend tubes and the three U-shaped curved bend tubes, wherein the side edges of the plurality of titanium alloy fixed ribs located on the side are respectively fixedly installed in the inner cavity of the heat exchange device, one end of one of the S-shaped curved bend tubes located at one end passes through one side of the heat exchange device and is connected to the inlet of the low-temperature liquid medium, and one end of one of the S-shaped curved bend tubes located at the other end passes through one side of the heat exchange device and is connected to the outlet of the high-temperature liquid medium.

[0007] As a preferred embodiment, a drain pipe is installed through the bottom of the heat exchange device, a smoke inlet is installed through one side of the heat exchange device, and a smoke outlet is installed through the other side of the heat exchange device.

[0008] As a preferred embodiment, a gate valve is installed at the water inlet end of the cleaning alkali solution PP storage tower, a drain ball valve is installed at the water outlet end of the cleaning alkali solution PP storage tower, and a float valve is installed at the top of the inner cavity of the cleaning alkali solution PP storage tower.

[0009] As a preferred embodiment, a return pipe is installed at one end of the drain pipe, one end of the return pipe is installed through the top of one side of the cleaning alkali solution PP storage tower, and a PP ball valve is installed on one side of the return pipe surface.

[0010] As a preferred embodiment, an anti-corrosion solenoid valve and a one-way valve are installed on one side of the surface of one end of the water supply pipe, one end of the water supply pipe is connected to an anti-corrosion circulating water pump, the water inlet end of the anti-corrosion circulating water pump is connected to a connecting pipe, a PP ball valve 2 is installed on the surface of one end of the connecting pipe, and one end of the diversion pipe is installed through the bottom of one side of the cleaning alkali solution PP storage tower.

[0011] As a preferred embodiment, the surface of the anti-corrosion circulating water pump is connected to a control electrical box via a line.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, the smoke inlet is connected to the external fume hood, and the gas heated by the large amount of heat generated by the heating electric furnace in the fume hood enters the heat exchange device through the smoke inlet and is then discharged through the smoke outlet. The titanium alloy pipe is connected to the outlet of the air conditioning coil of the external liquid-mass circulation system through the low-temperature liquid medium inlet, and is connected to the inlet of the air conditioning coil of the external liquid-mass circulation system through the high-temperature liquid medium outlet. The low-temperature liquid enters the titanium alloy pipe through the low-temperature liquid medium inlet, wherein the titanium alloy pipe is divided into four S-shaped curved bent pipes and three U-shaped bent pipes, which are distributed inside the heat exchange device, and can increase the heat exchange through the heat exchange device. The contact area of ​​the internal flue gas can improve the heat exchange efficiency, and multiple titanium alloy fixed ribs are installed on the surface of the S-shaped curved bending tube and the U-shaped bending tube. In addition to fixing the titanium alloy pipe, it can also increase the contact surface and further improve the heat exchange rate. Then, after heat exchange and heating with the heating gas inside the heat exchange device, it flows back through the high-temperature liquid medium outlet and is transferred to the external liquid circulation medium system through the titanium alloy pipe, and its heat is indirectly converted into outdoor low-temperature fresh air or indoor low-temperature circulating air heating heat energy, thereby fully recycling the heat energy generated by the heating furnace in the fume hood and reducing the energy consumption of laboratory air conditioning.

[0014] 2. The utility model provides a heat exchange device with a flushing device. When smoke accumulates inside the heat exchange device and covers the surface of the titanium alloy pipe, the heat exchange efficiency will be reduced. Therefore, the spiral nozzle of this device can be used to start the device through the control electrical box, and the anti-corrosion circulating water pump will be turned on, and the PP ball valve 1, PP ball valve 2, and anti-corrosion solenoid valve will all be opened. After the anti-corrosion circulating water pump is started, alkali solution is extracted from the inside of the cleaning alkali solution PP storage tower through the connecting pipe, and then sent into two branch pipes respectively through the water supply pipe, and finally sprayed out through the spiral nozzle to repeatedly flush the smoke attached to the surface of the titanium alloy pipe, thereby restoring the heat transfer performance of the titanium alloy pipe. The flushed water will flow back to the inside of the cleaning alkali solution PP storage tower through the drain pipe and the return pipe for recycling. The heat exchange device is welded with anti-corrosion titanium alloy and has the performance of high temperature and acid and alkali resistance, so it can operate in high temperature acidic flue gas and will not be damaged due to operation in such an environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the main body of a self-flushing, acid-resistant and high-temperature-resistant gas and liquid heat exchange device provided by the utility model;

[0016] Figure 2 A top view of the internal structure of a heat exchange device provided by the utility model, which is a self-flushing, acid-resistant and high-temperature-resistant gas and liquid heat exchange device;

[0017] Figure 3 The internal structure diagram of a heat exchange device provided by the utility model is a self-flushing acid-resistant and high-temperature-resistant gas and liquid heat exchange device;

[0018] Figure 4 The utility model provides a heat exchange device with self-flushing, acid-resistant and high-temperature-resistant gas and liquid heat exchange device.

[0019] Legend:

[0020] 1. Heat exchange device; 101. Drain pipe; 2. Smoke inlet; 3. Smoke outlet; 4. Low-temperature liquid medium inlet; 5. High-temperature liquid medium outlet; 6. Titanium alloy pipeline; 601. S-shaped curved bending pipe; 602. U-shaped bending pipe; 7. Titanium alloy fixed ribs; 8. Spiral nozzle; 9. PP liquid storage tower for cleaning alkali solution; 10. Anti-corrosion circulating water pump; 1001. Connecting pipe; 11. Water supply pipeline; 1101. Diversion pipeline; 12. Return pipeline; 13. Control electrical box; 14. Float valve; 1501. PP ball valve one; 1502. PP ball valve two; 16. Anti-corrosion solenoid valve; 17. Check valve; 18. Gate valve; 19. Drain ball valve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model provides a technical solution: a self-flushing acid-resistant and high-temperature-resistant gas and liquid heat exchange device, comprising: a heat exchange device 1 and a cleaning alkali solution PP storage tower 9, a titanium alloy pipe 6 is installed inside the heat exchange device 1, one end of the titanium alloy pipe 6 passes through the surface of the heat exchange device 1 and is connected to a low-temperature liquid medium inlet 4, the other end of the titanium alloy pipe 6 passes through the surface of the heat exchange device 1 and is connected to a high-temperature liquid medium outlet 5, spiral nozzles 8 are installed on both sides of the inner cavity of the heat exchange device 1, the water inlet ends of the two spiral nozzles 8 are connected to a diversion pipe 1101, and one end of the two diversion pipes 1101 is connected to a water supply pipe 11;

[0023] The titanium alloy pipeline 6 includes four S-shaped curved bent tubes 601 and three U-shaped curved bent tubes 602, one side of two adjacent S-shaped curved bent tubes 601 are butt-jointed to the two ends of one of the U-shaped curved bent tubes 602, and a plurality of titanium alloy fixed ribs 7 are fixedly installed on the surfaces of the four S-shaped curved bent tubes 601 and the three U-shaped curved bent tubes 602, wherein the side edges of the plurality of titanium alloy fixed ribs 7 located on the side are respectively fixedly installed on the inner cavity of the heat exchange device 1, one end of an S-shaped curved bent tube 601 located at one end passes through one side of the heat exchange device 1 and is connected to the low-temperature liquid medium inlet 4, and one end of an S-shaped curved bent tube 601 located at the other end passes through one side of the heat exchange device 1 and is connected to the high-temperature liquid medium outlet 5.

[0024] Specifically: the titanium alloy fixed ribs 7 support and install the titanium alloy pipe 6, and at the same time enhance the heat exchange efficiency of the titanium alloy pipe 6; the spiral nozzle 8 can spray alkali solution to wash the smoke and dust on the surface of the titanium alloy pipe 6; the surface of the titanium alloy pipe 6 is distributed in the interior of the heat exchange device 1 in multiple S-shaped curves.

[0025] In one embodiment, a drain pipe 101 is installed through the bottom of the heat exchange device 1 , a smoke inlet 2 is installed through one side of the heat exchange device 1 , and a smoke outlet 3 is installed through the other side of the heat exchange device 1 .

[0026] Specifically: the water after flushing inside the heat exchange device 1 can flow out through the drain pipe 101, the smoke inlet 2 is connected to the air outlet of the fume hood, and the smoke after heat exchange is discharged through the smoke outlet 3.

[0027] In one embodiment, a gate valve 18 is installed at the water inlet end of the cleaning alkali liquid PP storage tower 9, a drain ball valve 19 is installed at the water outlet end of the cleaning alkali liquid PP storage tower 9, and a float valve 14 is installed at the top of the inner cavity of the cleaning alkali liquid PP storage tower 9.

[0028] Specifically: the gate valve 18 is connected to the external water supply pipeline, the drain ball valve 19 is connected to the external drainage pipeline, and when the water inside the cleaning alkali solution PP storage tower 9 is full, a signal is triggered through the float valve 14 to stop the water supply.

[0029] In one embodiment, a return pipe 12 is installed at one end of the drain pipe 101, and one end of the return pipe 12 is installed through the top of one side of the cleaning alkali solution PP storage tower 9, and a PP ball valve 1501 is installed on one side of the surface of the return pipe 12.

[0030] Specifically, the water blown out from the drainage pipe 101 is sent into the cleaning alkali solution PP storage tower 9 through the return water pipe 12.

[0031] In one embodiment, an anti-corrosion solenoid valve 16 and a one-way valve 17 are installed on one side of the surface of one end of the water supply pipe 11, and an anti-corrosion circulating water pump 10 is connected to one end of the water supply pipe 11. The water inlet end of the anti-corrosion circulating water pump 10 is connected to a connecting pipe 1001, and a PP ball valve 2 1502 is installed on the surface of one end of the connecting pipe 1001. One end of the diversion pipe 1101 is installed at the bottom of one side of the cleaning alkali solution PP storage tower 9.

[0032] Specifically: after the anti-corrosion circulating water pump 10 is started by controlling the electrical box 13, the PP ball valve 1502 and the anti-corrosion solenoid valve 16 will be opened synchronously, so that the anti-corrosion circulating water pump 10 draws alkali solution from the cleaning alkali solution PP storage tower 9 through the connecting pipe 1001 and then diverts it to two diversion pipes 1101 through the water supply pipe 11.

[0033] In one embodiment, the surface of the anti-corrosion circulating water pump 10 is connected to a control electric box 13 via a line.

[0034] Specifically: the anti-corrosion circulating water pump 10 is electrically connected to the control electric box 13 .

[0035] Working principle: In this device, the flue gas inlet 2 is connected to the external fume hood. The gas heated by the large amount of heat generated by the heating electric furnace in the fume hood enters the heat exchange device 1 through the flue gas inlet 2 and is then discharged through the flue gas outlet 3. The titanium alloy pipe 6 is connected to the outlet of the air conditioning coil of the external liquid-mass circulation system through the low-temperature liquid medium inlet 4 and to the inlet of the air conditioning coil of the external liquid-mass circulation system through the high-temperature liquid medium outlet 5. The low-temperature liquid enters the titanium alloy pipe 6 through the low-temperature liquid medium inlet 4. The titanium alloy pipe 6 is divided into four S-shaped curved bend pipes 601 and three U-shaped bend pipes 602, which are distributed in the heat exchange device 1, the connection between the four S-curve bent pipes 601 and the three U-curve bent pipes 602 is also arranged in an S-curve arrangement. Through the multiple longitudinal and transverse S-curve arrangements, the contact area between the lifting and the internal flue gas passing through the heat exchange device can be increased, and the heat exchange efficiency can be improved. A plurality of titanium alloy fixing ribs 7 are installed on the surface of the S-curve bent pipe and the U-curve bent pipe. In addition to fixing the titanium alloy pipe 6, the contact surface can also be increased to further improve the heat exchange rate. After the heat exchange with the heating gas inside the heat exchange device 1 is heated, the super-high temperature liquid medium flows back to the outlet 5 and is transferred through the titanium alloy pipe 6. The heat of the external liquid circulation medium system is indirectly converted into outdoor low-temperature fresh air or indoor low-temperature circulating air heating heat energy, thereby fully recycling the heat energy generated by the heating electric furnace in the fume hood and reducing the energy consumption of laboratory air conditioning; the heat exchange device is equipped with a flushing device. When smoke and dust accumulate in the heat exchange device 1 and cover the surface of the titanium alloy pipe 6, the heat exchange efficiency will be reduced. Therefore, the spiral nozzle 8 of this device can be used to start the anti-corrosion circulating water pump 10 through the control electric box 13, and the PP ball valve 1 1501, PP ball valve 2 1502, and anti-corrosion solenoid valve 16 will all be opened, and the anti-corrosion circulating water pump 1 After startup, alkali solution is extracted from the cleaning alkali solution PP storage tower 9 through the connecting pipe 1001, and is respectively sent into the two branch pipes 1101 through the water supply pipe 11, and finally sprayed out through the spiral nozzle 8 to repeatedly flush the smoke and dust attached to the surface of the titanium alloy pipe 6, thereby restoring the heat transfer performance of the titanium alloy pipe 6. The flushed water will flow back to the cleaning alkali solution PP storage tower 9 through the drain pipe 101 and the return pipe 12 for recycling. The heat exchange device 1 is made of corrosion-resistant titanium alloy welding and has the performance of high temperature and acid and alkali resistance, so it can operate in high-temperature acidic flue gas and will not be damaged due to operation in such an environment.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A self-flushing, acid-resistant and high-temperature-resistant gas and liquid heat exchange device, characterized in that: include: A heat exchange device (1) and a cleaning alkali solution PP storage tower (9), wherein a titanium alloy pipe (6) is installed inside the heat exchange device (1), one end of the titanium alloy pipe (6) passes through the surface of the heat exchange device (1) and is connected to a low-temperature liquid medium inlet (4), and the other end of the titanium alloy pipe (6) passes through the surface of the heat exchange device (1) and is connected to a high-temperature liquid medium outlet (5), spiral nozzles (8) are installed on both sides of the inner cavity of the heat exchange device (1), the water inlet ends of the two spiral nozzles (8) are connected to a diversion pipe (1101), and one end of the two diversion pipes (1101) is connected to a water supply pipe (11); The titanium alloy pipe (6) comprises four S-shaped curved bend tubes (601) and three U-shaped curved bend tubes (602), one side of two adjacent S-shaped curved bend tubes (601) are butt-jointed to the two ends of one of the U-shaped curved bend tubes (602), and a plurality of titanium alloy fixed ribs (7) are fixedly mounted on the surfaces of the four S-shaped curved bend tubes (601) and the three U-shaped curved bend tubes (602), wherein the side edges of the plurality of titanium alloy fixed ribs (7) located on the side are respectively fixedly mounted on the inner cavity of the heat exchange device (1), one end of one of the S-shaped curved bend tubes (601) located at one end passes through one side of the heat exchange device (1) and is connected to the low-temperature liquid medium inlet (4), and one end of one of the S-shaped curved bend tubes (601) located at the other end passes through one side of the heat exchange device (1) and is connected to the high-temperature liquid medium outlet (5).

2. A self-flushing, acid-resistant and high-temperature-resistant gas and liquid heat exchange device according to claim 1, characterized in that: A drainage pipe (101) is installed through the bottom of the heat exchange device (1), a smoke inlet (2) is installed through one side of the heat exchange device (1), and a smoke outlet (3) is installed through the other side of the heat exchange device (1).

3. The self-flushing, acid-resistant and high-temperature-resistant gas and liquid heat exchange device according to claim 1, characterized in that: A gate valve (18) is installed at the water inlet end of the cleaning alkali solution PP storage tower (9), a drain ball valve (19) is installed at the water outlet end of the cleaning alkali solution PP storage tower (9), and a float valve (14) is installed at the top of the inner cavity of the cleaning alkali solution PP storage tower (9).

4. The self-flushing, acid-resistant and high-temperature-resistant gas and liquid heat exchange device according to claim 2, characterized in that: A return pipe (12) is installed at one end of the drainage pipe (101), and one end of the return pipe (12) is installed through the top of one side of the cleaning alkali solution PP storage tower (9), and a PP ball valve (1501) is installed on one side of the surface of the return pipe (12).

5. The self-flushing, acid-resistant and high-temperature-resistant gas and liquid heat exchange device according to claim 1, characterized in that: An anti-corrosion solenoid valve (16) and a one-way valve (17) are installed on one side of the surface of one end of the water supply pipe (11); one end of the water supply pipe (11) is connected to an anti-corrosion circulating water pump (10); the water inlet end of the anti-corrosion circulating water pump (10) is connected to a connecting pipe (1001); a PP ball valve 2 (1502) is installed on the surface of one end of the connecting pipe (1001); and one end of the diversion pipe (1101) is installed through the bottom of one side of the cleaning alkali solution PP storage tower (9).

6. A self-flushing, acid-resistant and high-temperature-resistant gas and liquid heat exchange device according to claim 5, characterized in that: The surface of the anti-corrosion circulating water pump (10) is connected to a control electric box (13) via a line.

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