Waste heat recovery system of air compressor

Abstract

The utility model belongs to the technical field of waste heat recovery, and particularly discloses a waste heat recovery system of an air compressor. The system mainly comprises an air compressor, an oil-gas separator, a gas-water heat exchanger, an oil-water heat exchanger and the like. Wherein an oil outlet of the air compressor is communicated with the oil-gas separator through an oil outlet pipe, a gas outlet of the oil-gas separator is communicated with the gas-water heat exchanger through a gas pipeline, and the gas-water heat exchanger is communicated with the air cooler; an oil outlet of the oil-gas separator is communicated with the oil-water heat exchanger through an oil pipeline; the oil-water heat exchanger is communicated with the hot water tank, the oil outlet end of the oil-water heat exchanger is communicated with the oil cooler, and the oil cooler is communicated with the air compressor through an oil return pipeline. According to the system, heat generated in the working process of the air compressor can be comprehensively utilized, the oil-water heat exchanger and the gas-water heat exchanger are used for exchanging the heat into water, hot water can be supplied to enterprise production and resident life, the expenditure cost of an enterprise and the resident life cost are reduced, and energy waste is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a waste heat recovery technical field, concretely relates to a kind of air compressor waste heat recovery system. BACKGROUND

[0002] Air compressor (abbreviation air compressor) is a kind of equipment for compressing gas, however, the electric energy consumed for increasing air potential energy in the operation process of air compressor, only a small part in total power consumption of air compressor, about 15%, about 85% of the electric energy left is converted into heat energy, and is discharged to air by the way of air cooling or water cooling.These "excessive" heat is discharged to air, which not only affects the surrounding environment, aggravates the greenhouse effect of atmosphere, creates "hot" pollution, but also causes the waste of resources.

[0003] Therefore, the utility model provides an air compressor waste heat recovery system. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an air compressor waste heat recovery system, which can comprehensively utilize the heat generated in the working process of air compressor and reduce the pollution to environment.

[0005] The utility model discloses a kind of air compressor waste heat recovery systems to achieve the above-mentioned purposes, using the following technical solutions:

[0006] An air compressor waste heat recovery system, comprising air compressor, oil-gas separator, gas-water heat exchanger, oil-water heat exchanger, oil cooler, air cooler and hot water tank;

[0007] The air compressor is provided with oil outlet, and the oil outlet is connected to the oil-gas separator through oil outlet pipe.

[0008] The top of the oil-gas separator is provided with gas outlet, and the gas outlet is connected to the gas inlet of the gas-water heat exchanger through first gas pipeline, the gas outlet of the gas-water heat exchanger is connected to the gas inlet of the air cooler, and the gas outlet of the air cooler is connected to the gas-water separator.

[0009] The sidewall of the oil-gas separator is provided with oil outlet, and the oil outlet is connected to the oil inlet of the oil-water heat exchanger through first oil pipeline.

[0010] The water outlet of the oil-water heat exchanger is connected to the hot water tank, and the water outlet of the hot water tank is connected to multiple water inlets through first booster pump; the oil outlet of the oil-water heat exchanger is connected to the oil cooler, and the oil cooler is connected to the air compressor through oil return pipeline.

[0011] Preferably, the air inlet of the air compressor is provided with air filter and air inlet control valve.

[0012] Preferably, the air compressor comprises a motor and a main machine, and the motor is connected with the main machine through a shaft coupling.

[0013] Preferably, the hot water tank is provided with a first temperature sensor.

[0014] Preferably, the oil return pipe is provided with a second temperature sensor and a cooler.

[0015] Preferably, the oil return pipe is provided with a filter.

[0016] Preferably, the water inlets of the gas-water heat exchanger and the oil-water heat exchanger are communicated with a water supplement end through a water supplement pipe and a second booster pump.

[0017] Preferably, the water supplement pipe is provided with a water supplement valve.

[0018] Preferably, the bottom of the oil-gas separator is provided with an oil discharge pipe, and the oil discharge pipe is provided with a blowdown valve.

[0019] Preferably, the first oil pipe is provided with a stop valve.

[0020] The beneficial effects of the utility model are as follows:

[0021] The utility model discloses a kind of air compressor waste heat recovery systems, the system can comprehensively utilize the heat generated in the working process of air compressor, heat is exchanged to water using oil-water heat exchanger and gas-water heat exchanger, hot water can supply enterprise production and resident life, reduce the cost of expenditure of enterprise and resident life cost, simultaneously also solve the problem that heat cannot be comprehensively utilized in the working of air compressor, to avoid the waste of energy;In addition, high-temperature gas is further cooled after air cooler and then discharged to atmosphere, can reduce environmental thermal pollution, be conducive to environmental protection;The utility model passes through being provided with oil return pipe in system, can be re-injected to air compressor and circulate using after oil is cooled, avoid the waste of resources, simultaneously, temperature sensor and cooler are set on oil return pipe, oil temperature is strictly controlled, effectively reduce the heat in the working of air compressor, prolong the service life of air compressor, reduce unit fault, reduce the labor intensity of worker. DRAWINGS

[0022] Figure 1 It is the connection relationship schematic view of waste heat recovery system of the utility model;

[0023] Figure 2 It is the connection relationship schematic view of air path part of the utility model;

[0024] Figure 3 It is the connection relationship schematic view of oil path part of the utility model;

[0025] Among them, 1-air compressor, 11-air filter; 2-oil-gas separator, 21-first gas pipeline, 22-first oil pipeline; 31-air-water heat exchanger, 311-heating end, 32-air cooler, 33-air-water separator, 34-atmosphere end; 41-oil-water heat exchanger, 42-oil cooler, 421-oil return pipeline, 422-filter, 423-first temperature sensor, 424-cooler; 5-hot water tank, 51-second temperature sensor; 6-first booster pump; 7-water supply end; 8-water supply end, 81-second booster pump, 82-water supply valve. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Combination Figures 1 to 3 As shown, this utility model proposes an air compressor waste heat recovery system. This system can comprehensively utilize the heat generated during the operation of the air compressor 1, thereby achieving energy saving and reducing energy consumption, while also benefiting environmental protection. The waste heat recovery system mainly includes an air compressor 1, an oil-gas separator 2, an air-water heat exchanger 31, an oil-water heat exchanger 41, an oil cooler 42, an air cooler 32, and a hot water tank 5.

[0029] Combination Figures 1 to 3 As shown, outside air enters the air compressor 1 through its inlet and is compressed into high-pressure air. The air compressor 1 has an air filter 11 and an intake control valve at its inlet. The air filter 11 removes dust and sand particles from the air, ensuring sufficient clean air enters the air compressor 1 and preventing large particles from entering and causing wear on internal components, thus extending the equipment's lifespan. The intake control valve is used to regulate the air intake process.

[0030] Combination Figure 1As shown, the air compressor 1 mainly includes an electric motor and a main unit, wherein the electric motor is connected to the main unit via a coupling. The air compressor 1 has an oil outlet, which is connected to an oil-gas separator 2 via an oil outlet pipe. The oil-gas separator 2 can separate high-temperature gas and high-temperature oil phases.

[0031] Combination Figure 2 As shown, the top of the oil-gas separator 2 has a gas outlet, which is connected to the inlet of the gas-water heat exchanger 31 via a first gas pipeline 21. The gas-water heat exchanger 31 can exchange the heat of the high-temperature gas into the water, and output this water source to the heating end 311 for use. The outlet of the gas-water heat exchanger 31 is connected to the inlet of the air cooler 32. The air cooler 32 can cool the gas, preventing the high-temperature gas from being directly emitted into the atmosphere and causing thermal pollution to the environment, which is beneficial to environmental protection. The outlet of the air cooler 32 is connected to the gas-water separator 33, through which clean and low-temperature gas is discharged to the atmosphere end 34, reducing environmental pollution.

[0032] Combination Figure 3 As shown, the oil-gas separator 2 has an oil outlet on its side wall. The oil outlet is connected to the oil inlet of the oil-water heat exchanger 41 through the first oil pipeline 22. The oil-water heat exchanger 41 can exchange the heat of the high-temperature oil to the water. At the same time, the water outlet of the oil-water heat exchanger 41 is connected to the hot water tank 5. The hot water tank 5 can store a large amount of hot water. The hot water tank 5 is equipped with a second temperature sensor 51. When the detected temperature meets the water usage requirements, the water outlet of the hot water tank 5 is connected to multiple water outlets 7 through the first booster pump 6, which can provide production water for enterprises and domestic water for residents. By taking the above measures, energy waste is avoided and environmental pollution is reduced.

[0033] Combination Figure 3 As shown, a shut-off valve 221 is installed on the first oil pipeline 22, which can prevent oil from continuing to be delivered to the interior of the oil-water heat exchanger 41 when the oil-water heat exchanger 41 malfunctions.

[0034] Combination Figure 1 and Figure 3 As shown, the oil outlet of the oil-water heat exchanger 41 is connected to the oil cooler 42, which can effectively reduce the temperature of the oil and prevent the oil temperature from being too high, which could lead to aging and damage to the system's sealing elements. The oil cooler 42 is connected to the air compressor 1 through the return oil pipeline 421, so that the cooled oil can be reused in the air compressor 1, thus avoiding waste of resources.

[0035] Combination Figure 1 and Figure 3As shown, the oil return line 421 is equipped with a first temperature sensor 423 and a cooler 424. The first temperature sensor 423 can detect the oil temperature in the oil return line 421. When the oil temperature exceeds a preset value, the cooler 424 is activated to cool the oil in the oil return line 421 a second time, ensuring that the oil temperature meets the requirements before being injected into the air compressor 1. When the first temperature sensor 423 detects that the oil temperature in the oil return line 421 meets the requirements, the cooler 424 stops operating to avoid energy waste.

[0036] Combination Figure 1 and Figure 3 As shown, a filter 422 is also installed on the oil return line 421, which can filter oil impurities in the oil return line 421, prevent impurities from entering the air compressor 1 and causing wear on the internal structural components of the air compressor 1, and improve the service life of the air compressor 1.

[0037] Combination Figures 1 to 3 As shown, the inlets of the gas-water heat exchanger 31 and the oil-water heat exchanger 41 are connected to the water supply end 8 via a water supply pipeline and the second booster pump 81. The water supply end 8 can replenish the water source for the gas-water heat exchanger 31 and the oil-water heat exchanger 41. Simultaneously, a water supply valve 82 is installed on the water supply pipeline to regulate the water supply process and control the water supply rate. An oil drain pipe is installed at the bottom of the oil-gas separator 2, and a drain valve is installed on the oil drain pipe. This drain valve can promptly remove impurities from the oil, ensuring oil quality and preventing damage to equipment such as the air compressor 1.

[0038] This invention proposes an air compressor waste heat recovery system. This system comprehensively utilizes the heat generated during the operation of the air compressor 1. It uses an oil-water heat exchanger 41 and an air-water heat exchanger 31 to exchange heat into the water, providing hot water for both industrial production and residential use, reducing operating costs for businesses and residents. It also solves the problem of insufficient heat utilization during air compressor 1 operation, thus avoiding energy waste. Furthermore, the high-temperature gas is further cooled by an air cooler 32 before being released into the atmosphere, reducing environmental heat pollution and contributing to environmental protection. By installing a return oil pipeline 421 within the system, the cooled oil can be re-injected into the air compressor 1 for recycling, avoiding resource waste. Simultaneously, a temperature sensor and a cooler 424 are installed on the return oil pipeline 421 to strictly control the oil temperature, effectively reducing the heat generated during air compressor 1 operation, extending the service life of the air compressor 1, reducing unit failures, and alleviating the labor intensity of workers.

[0039] Of course, the above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model and should be protected by the present utility model.

Claims

1. A waste heat recovery system for an air compressor, characterized in that, This includes air compressors, oil-gas separators, gas-water heat exchangers, oil-water heat exchangers, oil coolers, air coolers, and hot water tanks. The air compressor is provided with an oil outlet, which is connected to an oil-gas separator via an oil outlet pipe; The top of the oil-gas separator has a gas outlet, which is connected to the inlet of the gas-water heat exchanger through a first gas pipeline. The outlet of the gas-water heat exchanger is connected to the inlet of the air cooler, and the outlet of the air cooler is connected to the gas-water separator. The oil-gas separator has an oil outlet on its side wall, and the oil outlet is connected to the oil inlet of the oil-water heat exchanger through a first oil pipeline. The outlet of the oil-water heat exchanger is connected to the hot water tank, and the outlet of the hot water tank is connected to multiple water-using terminals through the first booster pump; the oil outlet of the oil-water heat exchanger is connected to the oil cooler, and the oil cooler is connected to the air compressor through the oil return pipeline.

2. The air compressor waste heat recovery system according to claim 1, characterized in that, An air filter and an intake control valve are installed at the air inlet of the air compressor.

3. The air compressor waste heat recovery system according to claim 1, characterized in that, The air compressor includes an electric motor and a main unit, and the electric motor is connected to the main unit via a coupling.

4. The air compressor waste heat recovery system according to claim 1, characterized in that, The return oil line is equipped with a first temperature sensor and a cooler.

5. The air compressor waste heat recovery system according to claim 1, characterized in that, A filter is installed on the return oil line.

6. The air compressor waste heat recovery system according to claim 1, characterized in that, A second temperature sensor is installed on the hot water tank.

7. The air compressor waste heat recovery system according to claim 1, characterized in that, The inlets of the gas-water heat exchanger and the oil-water heat exchanger are connected to the water supply end through a water supply pipeline and a second booster pump.

8. The air compressor waste heat recovery system according to claim 7, characterized in that, Each of the water supply pipelines is equipped with a water supply valve.

9. The air compressor waste heat recovery system according to claim 1, characterized in that, The bottom of the oil-gas separator is equipped with an oil drain pipe, and a drain valve is installed on the oil drain pipe.

10. The air compressor waste heat recovery system according to claim 1, characterized in that, A shut-off valve is installed on the first oil pipeline.

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