Operation system of air cooler outside frequency converter

Abstract

A frequency converter external air cooler operation system relates to the technical field of air cooler equipment and comprises a condenser, a condenser fan, a low-temperature warehouse, a high-temperature warehouse and a plurality of pipelines, the condenser is connected with the condenser fan, and the condenser is respectively connected with the low-temperature warehouse and the high-temperature warehouse through the pipelines. A liquid storage device, a drying filter, a stop valve and a liquid viewing mirror are sequentially mounted on a pipeline for connecting the condenser with the low-temperature warehouse and the high-temperature warehouse; the low-temperature warehouse and the high-temperature warehouse are connected with the compressor through pipelines respectively, the compressor is connected with the condenser through a pipeline, the self-circulation pressure difference controller is installed on the compressor, and an inlet end pipeline and an outlet end pipeline of the compressor are connected with the two ends of the pressure difference controller respectively. The frequency converter external air cooler operation system avoids the problem that the frequency converter stops operation when the temperature continuously rises.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cold -air fan equipment technical field, concretely relates to a frequency converter external cold -air fan operation system. BACKGROUND

[0002] The blast furnace main hoist is the blast furnace loading use equipment, and is one of important blast furnace equipment, since the motor is the frequency converter control speed regulation operation, we must pay attention to the heat state of the frequency converter, if the frequency converter external cooling fan stops, is not discovered in time, the frequency converter temperature continues to rise, can lead to the frequency converter stop running, thereby influence blast furnace loading, cause to reduce the wind. UTILITY MODEL CONTENTS

[0003] The utility model discloses a frequency converter external cold -air fan operation system, which avoids the problem of continuous temperature rise and stop of the frequency converter.

[0004] In order to solve the problems in the background art, the utility model adopts the following technical scheme: including condenser, condenser fan, low temperature warehouse, high temperature warehouse and a plurality of pipelines, the condenser is connected with the condenser fan, the condenser is connected with the low temperature warehouse and the high temperature warehouse through the pipeline respectively, the condenser is sequentially installed with liquid accumulator, drying filter, stop valve and sight glass on the pipeline connected with the low temperature warehouse and the high temperature warehouse, the low temperature warehouse and the high temperature warehouse are connected with the compressor through the pipeline respectively, the compressor is connected with the condenser through the pipeline, the self-circulation pressure difference controller is installed on the compressor, and the inlet pipeline and the outlet pipeline of the compressor are connected with two ends of the pressure difference controller respectively.

[0005] One electromagnetic valve is installed on the front pipeline of the low temperature warehouse and the high temperature warehouse respectively.

[0006] The low temperature warehouse includes fan one, evaporator one, temperature sensing bag one and temperature controller one, the evaporator one is connected with the condenser through the pipeline, the evaporator one is connected with the fan one through the pipeline, the fan one is connected with the compressor through the pipeline, the temperature controller one is installed on the evaporator one, and the temperature controller one is electrically connected with the temperature sensing bag one through wires.

[0007] The thermal expansion valve one is installed between the evaporator one and the electromagnetic valve.

[0008] The high temperature warehouse includes fan two, evaporator two, temperature sensing bag two and temperature controller two, the evaporator two is connected with the condenser through the pipeline, the evaporator two is connected with the fan two through the pipeline, the fan two is connected with the compressor through the pipeline, the temperature controller two is installed on the evaporator two, and the temperature controller two is electrically connected with the temperature sensing bag two through wires.

[0009] The thermal expansion valve two is installed between the evaporator two and the electromagnetic valve.

[0010] The check valve and the evaporation pressure regulating valve are respectively installed on the pipeline connected with the compressor.

[0011] The utility model discloses the beneficial effect is:

[0012] 1. The post can find in time, and check processing is carried out to relevant electrical personnel.

[0013] 2. Ensure that the frequency converter temperature does not continuously rise.

[0014] 3. Timely processing does not cause the frequency converter heat state to reach the upper limit, cannot normally work, ensures the stable operation of loading system. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of the utility model. DETAILED DESCRIPTION

[0016] Referring to Figure 1 , the utility model discloses the following implementation ways are adopted specifically: including condenser 1, condenser fan 2, low temperature warehouse 11, high temperature warehouse 18 and several pipelines, condenser 1 is connected with condenser fan 2, and condenser 1 is connected with low temperature warehouse 11 and high temperature warehouse 18 through pipeline respectively, and the pipeline of condenser 1 is connected with low temperature warehouse 11 and high temperature warehouse 18 installs liquid accumulator 3, drying filter 5, stop valve 6 and sight glass 8 in proper order;Low temperature warehouse 11 and high temperature warehouse 18 are connected with compressor 4 through pipeline respectively, and compressor 4 is connected with condenser 1 through pipeline, and self-circulation differential pressure controller 7 is installed on compressor 4, and the inlet pipeline and the outlet pipeline of compressor 4 are connected with the two ends of differential pressure controller 24 respectively.The front pipeline of low temperature warehouse 11 and high temperature warehouse 18 is installed with an electromagnetic valve 14 respectively.The low temperature warehouse 11 includes fan one 15, evaporator one 12, temperature sensing bag one 10 and temperature controller one 9, evaporator one 12 is connected with condenser 1 through pipeline, evaporator one 12 is connected with fan one 15 through pipeline, fan one 15 is connected with compressor 4 through pipeline, temperature controller one 9 is installed on evaporator one 12, and temperature controller one 9 is electrically connected with temperature sensing bag one 10 through wire.The heat expansion valve one 13 is installed between evaporator one 12 and electromagnetic valve 14.The high temperature warehouse 18 includes fan two 19, evaporator two 17, temperature sensing bag two 21 and temperature controller two 22, evaporator two 17 is connected with condenser 1 through pipeline, evaporator two 17 is connected with fan two 19 through pipeline, fan two 19 is connected with compressor 4 through pipeline, temperature controller two 22 is installed on evaporator two 17, and temperature controller two 22 is electrically connected with temperature sensing bag two 21 through wire.The heat expansion valve two 16 is installed between evaporator two 17 and electromagnetic valve 14.The pipeline connected with compressor 4 on low temperature warehouse 11 and high temperature warehouse 18 is respectively installed with check valve 20 and evaporation pressure regulating valve 23.

[0017] The variable frequency converter external cooling fan operation system, when in use, blows the condenser 1 through the condenser fan 2 to perform the heat dissipation function.

[0018] 1. The temperature of the variable frequency converter is measured by using the temperature sensing bag 10 or the temperature sensing bag 2, when high temperature is needed, the high temperature library 18 is started, when cooling is needed, the low temperature library 11 is started, the temperature sensing bag 10 or the temperature sensing bag 2 senses the temperature and transmits the signal to the corresponding temperature controller 9 or the temperature controller 22, according to the change of the temperature of the variable frequency converter, the temperature controller 9 or the temperature controller 22 works alternately.

[0019] 2. The main work of the temperature controller 9 or the temperature controller 22 is to control the corresponding fan to blow the corresponding evaporator, so as to achieve the effect of cooling.

[0020] 3. The condenser fan 2 is stopped when the signal on the computer is good, when the condenser fan 2 is normally running, the corresponding electromagnetic valve 14 of the low temperature library 11 is closed, the corresponding electromagnetic valve 14 of the high temperature library 18 is normally running, if the condenser fan 2 stops running due to failure, the corresponding electromagnetic valve 14 of the low temperature library 11 is opened, the corresponding electromagnetic valve 14 of the high temperature library 18 is closed, which can also play a role in cooling the variable frequency converter, when the low temperature library 11 is running, it will show that the condenser fan 2 is stopped due to failure, and the on-duty personnel will be notified to repair in time.

[0021] In summary, the variable frequency converter external cooling fan operation system can accurately pay attention to the running condition of the equipment, and will not expand the accident to affect the production operation. The fault handling time will not be expanded (because the upper limit must be cooled to the rated value before it is allowed to work).

Claims

1. A variable frequency drive (VFD) external cooling fan operating system, characterized in that: The system includes a condenser (1), a condenser fan (2), a low-temperature storage chamber (11), a high-temperature storage chamber (18), and several pipelines. The condenser (1) is connected to the condenser fan (2). The condenser (1) is connected to the low-temperature storage chamber (11) and the high-temperature storage chamber (18) through pipelines. A liquid receiver (3), a dryer filter (5), a shut-off valve (6), and a sight glass (8) are installed sequentially on the pipelines connecting the condenser (1) to the low-temperature storage chamber (11) and the high-temperature storage chamber (18). The low-temperature storage chamber (11) and the high-temperature storage chamber (18) are connected to the compressor (4) through pipelines. The compressor (4) is connected to the condenser (1) through pipelines. A self-circulating differential pressure controller (7) is installed on the compressor (4). The inlet pipeline and outlet pipeline of the compressor (4) are connected to the two ends of the differential pressure controller (24) respectively.

2. The inverter external cooling fan operating system according to claim 1, characterized in that: A solenoid valve (14) is installed on the front end pipeline of the low temperature storage (11) and the high temperature storage (18).

3. The inverter external cooling fan operating system according to claim 1, characterized in that: The low-temperature storage (11) includes a fan (15), an evaporator (12), a temperature sensor (10), and a temperature controller (9). The evaporator (12) is connected to the condenser (1) through a pipe. The evaporator (12) is connected to the fan (15) through a pipe. The fan (15) is connected to the compressor (4) through a pipe. The temperature controller (9) is installed on the evaporator (12). The temperature controller (9) is electrically connected to the temperature sensor (10) through a wire.

4. The inverter external cooling fan operating system according to claim 3, characterized in that: A thermostatic expansion valve (13) is installed between the evaporator (12) and the solenoid valve (14).

5. The inverter external cooling fan operating system according to claim 1, characterized in that: The high-temperature chamber (18) includes a second fan (19), a second evaporator (17), a second temperature sensor (21), and a second temperature controller (22). The second evaporator (17) is connected to the condenser (1) through a pipeline. The second evaporator (17) is connected to the second fan (19) through a pipeline. The second fan (19) is connected to the compressor (4) through a pipeline. The second temperature controller (22) is installed on the second evaporator (17). The second temperature controller (22) is electrically connected to the second temperature sensor (21) through a wire.

6. The inverter external cooling fan operating system according to claim 5, characterized in that: A thermostatic expansion valve (16) is installed between the evaporator (17) and the solenoid valve (14).

7. The inverter external cooling fan operating system according to claim 1, characterized in that: Check valves (20) and evaporation pressure regulating valves (23) are installed on the pipelines connecting the low-temperature storage (11) and the high-temperature storage (18) to the compressor (4).

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