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CN-116428221-B - Cooling system of air compressor

CN116428221BCN 116428221 BCN116428221 BCN 116428221BCN-116428221-B

Abstract

The invention discloses an air compressor cooling system which comprises a control system, a water cooling loop and a cooling liquid loop, wherein the water cooling loop and the cooling liquid loop share a heat exchanger, an intercooler in the water cooling loop is connected with a cooling tower, an inlet node formed by connecting a heat exchanger and a flow control valve in parallel is connected with the intercooler, an outlet node formed by connecting the heat exchanger and the flow control valve in parallel is connected with a water inlet of the cooling tower, a flowmeter and a temperature sensor are arranged between the cooling tower and the intercooler, a temperature sensor is arranged between the intercooler and the inlet node, a flowmeter and a temperature sensor are arranged between the heat exchanger and the outlet node, the heat exchanger in the cooling liquid loop is connected with a water tank in parallel and then is connected with a water pump, the water pump is connected with a cooling liquid inlet of a motor of the air compressor, and a cooling liquid outlet of the motor is connected with the heat exchanger. The cooling system of the air compressor solves the problems that an existing cooling system of an air compressor can not ensure that a motor is always well cooled, and space occupation is large due to the arrangement of two sets of cooling systems, so that on-site arrangement is not facilitated.

Inventors

  • YAN KAI
  • WANG BENYI
  • AN RAN
  • LI YU

Assignees

  • 中车大连机车研究所有限公司

Dates

Publication Date
20260512
Application Date
20230329

Claims (7)

  1. 1. The air compressor cooling system is characterized by comprising a control system, a water cooling loop and a cooling liquid loop, wherein the water cooling loop and the cooling liquid loop share a heat exchanger (2); The water cooling loop comprises an intercooler (1), a heat exchanger (2), a flow control valve (3) and a cooling tower (8), wherein a water inlet of the intercooler (1) is connected with a water outlet of the cooling tower (8), a cold side medium inlet of the heat exchanger (2) and an inlet end of the flow control valve (3) are connected in parallel to form an inlet node, the inlet node is connected with a water outlet of the intercooler (1), and a cold side medium outlet of the heat exchanger (2) and an outlet end of the flow control valve (3) are connected in parallel to form an outlet node, and the outlet node is connected with a water inlet of the cooling tower (8); a cooling water flowmeter (L1) and a water inlet temperature sensor (T1) are arranged on a pipeline between a water outlet of the cooling tower (8) and a water inlet of the intercooler (1), an intercooler water outlet temperature sensor (T2) is arranged on a pipeline between a water outlet and an inlet node of the intercooler (1), and a heat exchanger flowmeter (L2) and a heat exchanger water outlet temperature sensor (T3) are arranged on a pipeline between a cold side medium outlet and an outlet node of the heat exchanger (2); The cooling liquid loop comprises a heat exchanger (2), a water tank (5) and a water pump (6), wherein a hot side medium outlet of the heat exchanger (2) is connected with an outlet of the water tank (5) filled with cooling liquid in parallel and then is connected with an inlet of the water pump (6), an outlet of the water pump (6) is connected with a cooling liquid inlet of a motor (A) of the air compressor, and a cooling liquid outlet of the motor (A) is connected with a hot side medium inlet of the heat exchanger (2); The control system can receive data detected by each temperature sensor and each flowmeter and output control signals to control the opening degree of the flow control valve (3) and the outlet water temperature and the outlet water flow of the cooling tower (8) in an interlocking mode.
  2. 2. An air compressor cooling system according to claim 1, wherein the cooling liquid circuit is provided with a motor inlet water temperature sensor (T4) and a motor outlet water temperature sensor (T5).
  3. 3. An air compressor cooling system according to claim 1, characterized in that the water tank (5) is provided with a liquid level alarm (51).
  4. 4. An air compressor cooling system according to claim 1, characterized in that the heat exchanger (2) is a plate heat exchanger.
  5. 5. An air compressor cooling system according to claim 1, further comprising an automatic drain (7), wherein the intercooler (1) is connected to the automatic drain (7).
  6. 6. An air compressor cooling system according to claim 1, characterized in that a one-way valve (4) is arranged in the line between the cold side medium outlet and the outlet node of the heat exchanger (2).
  7. 7. An air compressor cooling system according to claim 1 or 2, wherein the control system is provided with a display screen.

Description

Cooling system of air compressor Technical Field The invention relates to the field of air compressors, in particular to a cooling system of an air compressor. Background An air compressor, also called an air compressor, is a device for compressing a gas. Can be suitable for special and severe environments such as high humidity, much dust, high temperature, inflammability, explosiveness and the like and occasions with large impact and load change, has many advantages not possessed by other power machines, and is therefore adopted by many industries such as mines, machines, metallurgy, building materials and the like. The air compressor machine is compressed the air by the turbine driven by the motor, and in the course of the work, the motor generates heat and heaies up, needs timely cooling to avoid shortening life or causing the trouble because of the high temperature, influence the normal use of air compressor machine. When the air compressor compresses air, intermolecular gaps of the compressed air are reduced, potential energy is reduced, internal energy is increased, the temperature of the compressed air is increased, power consumption is increased due to thermal expansion of gas, air compression efficiency is reduced, meanwhile, oil and water contained in high-temperature compressed air discharged can not be fully condensed and separated, gas utilization equipment is affected or accumulated in a pipeline, and therefore the compressed air also needs to be cooled. The motors of the compressed air and the air compressor are required to be cooled to ensure that the air compressor is normally used, and the existing air compressor is generally provided with two sets of water cooling and air cooling systems to respectively cool the motors of the compressed air and the air compressor. The air cooling system is greatly influenced by environment, when the environment temperature is high, the cooling effect is poor, the motor of the air compressor is easy to overheat, the service life is influenced, dust is easy to accumulate when the air cooling system is applied to the environment with more dust, the heat dissipation of the motor is influenced, the motor is also easy to overheat, the service life is influenced, the air cooling system can not ensure that the motor always obtains good cooling, and the air compressor and two independent cooling systems are arranged in the same cabinet, so that the occupied space of the cabinet of the air compressor is large, and the on-site arrangement of the cabinet of the air compressor is not facilitated. Disclosure of Invention The invention provides an air compressor cooling system, which aims to solve the problems that the prior air compressor is generally provided with two sets of systems for cooling compressed air and motors of the air compressor respectively, an air cooling system for cooling the motors is greatly influenced by environment, the motors can not be ensured to be well cooled all the time, and the air compressor and the two sets of independent cooling systems are arranged in the same cabinet, so that the occupied space of the cabinet of the air compressor is large and the on-site arrangement of the cabinet of the air compressor is not facilitated. In order to achieve the above object, the technical scheme of the present invention is as follows: The air compressor cooling system comprises a control system, a water cooling loop and a cooling liquid loop, wherein the water cooling loop and the cooling liquid loop share a heat exchanger; The water cooling loop comprises an intercooler, a heat exchanger, a flow control valve and a cooling tower, wherein a water inlet of the intercooler is connected with a water outlet of the cooling tower, an inlet node is formed after a cold side medium inlet of the heat exchanger and an inlet end of the flow control valve are connected in parallel, the inlet node is connected with a water outlet of the intercooler, a cold side medium outlet of the heat exchanger and an outlet end of the flow control valve are connected in parallel to form an outlet node, and the outlet node is connected with a water inlet of the cooling tower; A cooling water flowmeter and a water inlet temperature sensor are arranged on a pipeline between the water outlet of the cooling tower and the water inlet of the intercooler, an intercooler water outlet temperature sensor is arranged on a pipeline between the water outlet of the intercooler and the inlet node, and a heat exchanger flowmeter and a heat exchanger water outlet temperature sensor are arranged on a pipeline between the cold side medium outlet of the heat exchanger and the outlet node; The cooling liquid loop comprises a heat exchanger, a water tank and a water pump, wherein a hot side medium outlet of the heat exchanger is connected with an outlet of the water tank filled with cooling liquid in parallel and then is connected with an inlet of the water pump, an outlet of the water pump is conne