A cyclic waste heat recovery device

Abstract

The utility model discloses a kind of cyclic waste heat recovery equipment, including air compressor and heat recovery unit, the side of air compressor is equipped with oil circuit pipeline, a plurality of first gate valves are installed on oil circuit pipeline, one end of oil circuit pipeline is connected with heat recovery unit;The utility model is equipped with heat recovery unit and so on by setting oil circuit pipeline, the heat in the oil circuit pipeline in air compressor will be transferred to heat recovery unit by oil circuit pipeline, cold water in heat preservation water tank is discharged to heat recovery unit by first connecting pipe and carries out heat exchange, high-temperature oil in oil circuit pipeline is cooled, while the water after temperature rise is backflowed to heat preservation water tank by first connecting pipe, discharge through second connecting pipe for subsequent use, the temperature and position of water are detected by temperature sensor and liquid level sensor on the top of heat preservation water tank, signal is transmitted to electric three-way switch valve on tap water connecting pipe, whether water is needed is judged, and energy consumption is reduced by making full use of heat.

Description

Technical Field

[0001] This utility model relates to the technical field of waste heat recovery equipment, specifically a circulating waste heat recovery equipment. Background Technology

[0002] In industrial production and daily life, the efficient use of energy has always been a focus of attention. As a common power equipment, air compressors generate a large amount of heat energy during operation. If this heat energy is not recovered and utilized, it will be directly emitted into the environment, resulting in energy waste.

[0003] Traditional waste heat recovery equipment has some shortcomings. Many devices have low heat recovery efficiency and cannot fully recover the heat generated by the air compressor. This is because heat is lost during the transfer process, or the design of the recovery equipment is not reasonable enough to effectively convert heat energy into usable resources. Some waste heat recovery equipment is complicated to operate and requires professional personnel for maintenance and management, which increases the cost and difficulty of use. Therefore, a circulating waste heat recovery equipment is needed to meet people's needs. Utility Model Content

[0004] The purpose of this invention is to provide a circulating waste heat recovery device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a circulating waste heat recovery device, comprising an air compressor and a heat recovery unit, wherein an oil pipeline is installed on the side of the air compressor, and a plurality of first gate valves are installed on the oil pipeline, one end of the oil pipeline is connected to the heat recovery unit, an insulated water tank is provided on the side of the heat recovery unit, two first connecting pipes are installed between the heat recovery unit and the insulated water tank, a temperature sensor is installed on the top of the insulated water tank, a liquid level sensor is provided at one end of the temperature sensor, and an automatic turbine is installed on the side of one of the first connecting pipes.

[0006] Preferably, a water pump is installed inside the automatic turbine, and a clamp-type check valve is installed on the side of the water pump.

[0007] Preferably, a second connecting pipe is installed at the bottom of the insulated water tank, and a ball valve is installed at one end of the second connecting pipe near the insulated water tank.

[0008] Preferably, a water inlet pipe is installed on the side of the insulated water tank, an electric three-way valve is installed on the side of the water inlet pipe, and a second gate valve is installed on the side of the water inlet pipe near the electric three-way valve.

[0009] Preferably, a constant pressure expansion tank is installed at the end of the second connecting pipe away from the insulated water tank, a pressure gauge is installed on the side of the second connecting pipe near the constant pressure expansion tank, and a pressure sensor is provided at the end of the second connecting pipe near the pressure gauge.

[0010] Preferably, a drain pipe is installed on the side of the heat recovery unit, and a clamp-type check valve is installed at one end of the drain pipe.

[0011] Preferably, one end of the first connecting pipe is connected to the heat recovery unit, and the other end of the first connecting pipe is connected to the insulated water tank.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) By setting up oil pipelines and heat recovery units, the heat in the oil pipelines of the air compressor will be transferred to the heat recovery unit through the oil pipelines. The cold water in the insulated water tank is discharged to the heat recovery unit through the first connecting pipe for heat exchange, which cools the high-temperature oil in the oil pipelines. At the same time, the heated water flows back to the insulated water tank through the first connecting pipe and is discharged through the second connecting pipe for subsequent use. The temperature and level of the water are detected by the temperature sensor and liquid level sensor on the top of the insulated water tank, and the signal is transmitted to the electric three-way switch valve on the tap water connection pipe to determine whether water needs to be added, making full use of heat and reducing energy consumption.

[0014] (2) This utility model sets up a constant pressure expansion tank and a pressure gauge, etc., to maintain the stability of the water pressure in the second connecting pipe through the constant pressure expansion tank, prevent the water pump in the automatic turbine from frequently switching on and off, extend the service life, and help control the operation of the constant pressure expansion tank through the signal transmitted by the pressure sensor. The operator can observe the data of the pressure gauge to make a judgment. It is connected to the back end through the second connecting pipe for use, such as domestic water for bathing, etc., to improve the energy utilization rate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a circulating waste heat recovery device proposed in this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of point A;

[0017] Figure 3 for Figure 1 Enlarged view of point B.

[0018] In the diagram: 1. Air compressor; 2. Oil pipeline; 3. First gate valve; 4. Heat recovery unit; 5. Insulated water tank; 6. Temperature sensor; 7. Liquid level sensor; 8. Automatic turbine; 9. Water pump; 10. Wafer check valve; 11. First connecting pipe; 12. Second connecting pipe; 13. Ball valve; 14. Tap water connecting pipe; 15. Electric three-way switch valve; 16. Second gate valve; 17. Constant pressure expansion tank; 18. Pressure gauge; 19. Pressure sensor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1: Please refer to Figure 1-3This utility model provides a technical solution: a circulating waste heat recovery device, including an air compressor 1 and a heat recovery unit 4. An oil pipeline 2 is installed on the side of the air compressor 1, and multiple first gate valves 3 are installed on the oil pipeline 2. One end of the oil pipeline 2 is connected to the heat recovery unit 4. An insulated water tank 5 is provided on the side of the heat recovery unit 4. Two first connecting pipes 11 are installed between the heat recovery unit 4 and the insulated water tank 5. A temperature sensor 6 is installed on the top of the insulated water tank 5, and a liquid level sensor 7 is provided at one end of the temperature sensor 6. An automatic turbine 8 is installed on the side of one of the first connecting pipes 11. An automatic turbine 8 is equipped with a water pump 9, and a wafer-type check valve 10 is installed on the side of the water pump 9. A second connecting pipe 12 is installed at the bottom of the insulated water tank 5, and a ball valve 13 is installed at the end of the second connecting pipe 12 near the insulated water tank 5. A tap water connecting pipe 14 is installed on the side of the insulated water tank 5, and an electric three-way switch valve 15 is installed on the side of the tap water connecting pipe 14. A second gate valve 16 is installed on the side of the tap water connecting pipe 14 near the electric three-way switch valve 15. A drain pipe is installed on the side of the heat recovery unit 4, and a wafer-type check valve 10 is installed at one end of the drain pipe. A first connecting pipe... One end of the first connecting pipe 11 is connected to the heat recovery unit 4, and the other end of the first connecting pipe 11 is connected to the insulated water tank 5. During waste heat recycling, the high-temperature oil in the air compressor 1 is discharged into the heat recovery unit 4 through the oil pipeline 2. The transmission of the oil is controlled by the first gate valve 3. Two first connecting pipes 11 are connected to the side of the heat recovery unit 4. The other end of the first connecting pipe 11 is connected to the insulated water tank 5. The temperature of the water is monitored by the temperature sensor 6 and the liquid level sensor 7 on the top of the insulated water tank 5. When the temperature does not reach the set standard, the automatic turbine 8 on the first connecting pipe 11 does not activate. The system operates by circulating water and providing low oil temperature protection. When the temperature is high or the liquid level in the heat recovery unit 4 changes, the second gate valve 16 controls the tap water to enter the heat recovery unit 5 through the tap water connection pipe 14. The automatic turbine 8 on the first connection pipe 11 drives the water circulation, allowing the low-temperature water to flow into the pipeline of the heat recovery unit 4 to cool the oil in the oil pipeline 2 of the heat recovery unit 4. The water heated by the oil temperature flows into the heat recovery unit 5 through another first connection pipe 11. The ball valve 13 controls the second connection pipe 12 to discharge hot water for easy connection to the downstream.

[0021] Example 2: As Figure 1 and 3As shown, a constant pressure expansion tank 17 is installed at the end of the second connecting pipe 12 away from the insulated water tank 5. A pressure gauge 18 is installed on the side of the second connecting pipe 12 near the constant pressure expansion tank 17. A pressure sensor 19 is provided at the end of the second connecting pipe 12 near the pressure gauge 18. An automatic turbine 8 is installed on the second connecting pipe 12 to control the water flow in and out. The constant pressure expansion tank 17 maintains the stability of the water pressure in the second connecting pipe 12, preventing the water pump 9 in the automatic turbine 8 from frequently switching on and off, thus extending its service life. The signal transmitted by the pressure sensor 19 helps control the operation of the constant pressure expansion tank 17. The operator can observe the data of the pressure gauge 18 to make judgments. The remaining features are the same as in Embodiment 1.

[0022] The working principle is as follows: During waste heat recycling, the high-temperature oil in the air compressor 1 is discharged into the heat recovery unit 4 through the oil pipeline 2. The transmission of the oil is controlled by the first gate valve 3. Two first connecting pipes 11 are connected to the side of the heat recovery unit 4. The other end of the first connecting pipe 11 is connected to the insulated water tank 5. The temperature of the water is monitored by the temperature sensor 6 and the liquid level sensor 7 on the top of the insulated water tank 5. When the temperature does not reach the set standard, the automatic turbine 8 on the first connecting pipe 11 will not work to circulate water and perform low oil temperature protection. When the temperature is high and the liquid level in the insulated water tank 5 changes, the second gate valve 16 controls the tap water to enter the insulated water tank 5 through the tap water connecting pipe 14. The automatic turbine 8 on the first connecting pipe 11 drives the water circulation, so that the low-temperature water flows... The oil in the oil circuit 2 of the heat recovery unit 4 is cooled in the pipeline. The water heated by the oil flows into the insulated water tank 5 through another first connecting pipe 11. The hot water is discharged through the second connecting pipe 12 controlled by the ball valve 13, which facilitates the connection to the downstream. An automatic turbine 8 is installed on the second connecting pipe 12 to control the water flow. The constant pressure expansion tank 17 maintains the water pressure in the second connecting pipe 12, preventing the water pump 9 in the automatic turbine 8 from frequently switching on and off, thus extending its service life. The signal transmitted by the pressure sensor 19 helps control the operation of the constant pressure expansion tank 17. The operator can observe the data of the pressure gauge 18 to make judgments. Through heat exchange, the waste heat of the air compressor 1 is reused, which extends the service life of the air compressor 1, reduces the failure rate, and improves the energy utilization rate.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circulating waste heat recovery device, comprising an air compressor (1) and a heat recovery unit (4), characterized in that: An oil pipeline (2) is installed on the side of the air compressor (1). Multiple first gate valves (3) are installed on the oil pipeline (2). One end of the oil pipeline (2) is connected to the heat recovery unit (4). A heat-insulating water tank (5) is provided on the side of the heat recovery unit (4). Two first connecting pipes (11) are installed between the heat recovery unit (4) and the heat-insulating water tank (5). A temperature sensor (6) is installed on the top of the heat-insulating water tank (5). A liquid level sensor (7) is provided at one end of the temperature sensor (6). An automatic turbine (8) is installed on the side of one of the first connecting pipes (11).

2. The circulating waste heat recovery equipment according to claim 1, characterized in that: The automatic turbine (8) is equipped with a water pump (9), and a wafer check valve (10) is installed on the side of the water pump (9).

3. The circulating waste heat recovery equipment according to claim 1, characterized in that: The bottom of the insulated water tank (5) is equipped with a second connecting pipe (12), and a ball valve (13) is installed at one end of the second connecting pipe (12) near the insulated water tank (5).

4. The circulating waste heat recovery equipment according to claim 1, characterized in that: A water inlet pipe (14) is installed on the side of the insulated water tank (5), an electric three-way switch valve (15) is installed on the side of the water inlet pipe (14), and a second gate valve (16) is installed on the side of the water inlet pipe (14) near the electric three-way switch valve (15).

5. A circulating waste heat recovery device according to claim 3, characterized in that: A constant pressure expansion tank (17) is installed at the end of the second connecting pipe (12) away from the insulated water tank (5). A pressure gauge (18) is installed on the side of the second connecting pipe (12) near the constant pressure expansion tank (17). A pressure sensor (19) is provided at the end of the second connecting pipe (12) near the pressure gauge (18).

6. The circulating waste heat recovery device according to claim 1, characterized in that: The heat recovery unit (4) is equipped with a drain pipe on its side, and a clamp check valve (10) is installed at one end of the drain pipe.

7. The circulating waste heat recovery equipment according to claim 1, characterized in that: One end of the first connecting pipe (11) is connected to the heat recovery unit (4), and the other end of the first connecting pipe (11) is connected to the insulated water tank (5).

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