Heat dissipation control system of electric valve actuator of air conditioner steam pipeline

Abstract

The utility model discloses a heat dissipation control system of an electric valve actuator of an air conditioner steam pipeline. The heat dissipation control system comprises a heat dissipation shell, a press-in type heat dissipation fan and a temperature control unit. The electric valve actuator is sleeved with the heat dissipation shell, the heat dissipation shell is provided with regularly-arranged heat dissipation holes, an inner cavity of the heat dissipation shell is provided with the press-in type heat dissipation fan, and the press-in type heat dissipation fan is used for pressing outside natural wind into the inner cavity so as to dissipate heat of the electric valve actuator. The temperature control unit is in signal connection with the press-in type cooling fan, and the temperature control unit controls the press-in type cooling fan to operate when the temperature of the inner cavity is larger than a set temperature threshold value so as to reduce the temperature of the inner cavity. The service life of the electric valve actuator can be prolonged, and the working environment of the actuator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of workshop temperature and humidity control, and more specifically, to a heat dissipation control system for an electric valve actuator of an air conditioner steam pipeline. Background Art

[0002] The cigarette production process has very high requirements for temperature and humidity control. In order to ensure the temperature and humidity, the air conditioning system operates 24 hours a day, 7 days a week. Therefore, the air conditioning system poses extremely high requirements on the valves responsible for steam control and regulation. During the valve control process, when the steam opening degree decreases to a certain extent, the electric actuator will be under a great pressure difference. Due to the actuator being in a state of high temperature, high pressure, and large pressure difference for a long time, the high-speed steam flow has caused serious erosion inside the actuator pipeline, resulting in the steam electric valve being in a high-temperature state for a long time. Prolonged high temperature will cause the chip in the electric actuator to crash, making it unable to work properly. Therefore, how to dissipate heat and control the temperature of the electric actuator to ensure that the temperature and humidity in the production area meet the requirements is of great significance. Summary of the Utility Model

[0003] The utility model provides a heat dissipation control system for an electric valve actuator of an air conditioner steam pipeline, which solves the problem that the chip of the electric valve actuator in the existing air conditioner steam pipeline crashes in a high-temperature and high-humidity environment, making it unable to work properly, and can improve the service life of the electric valve actuator and improve the working environment of the actuator.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] A heat dissipation control system for an electric valve actuator of an air conditioner steam pipeline, comprising: a heat dissipation housing, a press-in type heat dissipation fan, and a temperature control unit;

[0006] The heat dissipation housing is sleeved outside the electric valve actuator. The heat dissipation housing is provided with regularly arranged heat dissipation holes. The inner cavity of the heat dissipation housing is provided with the press-in type heat dissipation fan, and the press-in type heat dissipation fan is used to press the external natural wind into the inner cavity to dissipate heat from the electric valve actuator;

[0007] The temperature control unit is signal-connected to the press-in type heat dissipation fan. When the temperature in the inner cavity is greater than the set temperature threshold, the temperature control unit controls the press-in type heat dissipation fan to operate to reduce the temperature in the inner cavity.

[0008] Preferably, the temperature control unit includes: a thermostat, a temperature sensor, and a temperature control relay;

[0009] The input end of the thermostat is connected to the output end of the temperature sensor, and the output end of the thermostat is connected to the control end of the temperature control relay;

[0010] The temperature control relay is connected in series between the power supply and the power supply terminal of the press-in type cooling fan.

[0011] When the temperature controller detects that the temperature of the inner cavity is greater than the set temperature threshold, the temperature controller controls the temperature control relay to conduct, so as to conduct the electrical connection between the press-in type cooling fan and the power supply.

[0012] Preferably, the temperature controller is provided with a display screen for displaying the temperature of the inner cavity in real time.

[0013] Preferably, it further includes: a PLC controller;

[0014] The PLC controller is signal-connected to the circuit board of the electric valve actuator for controlling the execution action of the electric valve actuator.

[0015] Preferably, the circuit board of the electric valve actuator is provided with an interface module, and the interface module is provided with an L terminal, an N terminal, an AI terminal and an AO terminal;

[0016] The L terminal and the N terminal serve as power input terminals, the AI terminal is used to receive the PLC output signal, and the AO terminal is used to send a control feedback value.

[0017] Preferably, it further includes: a reset relay;

[0018] The control end of the reset relay is connected to the output end of the PLC controller, the input end of the reset relay is connected to the L terminal, and the output end of the reset relay is connected to the power supply;

[0019] The PLC controller resets the electric valve actuator by controlling the on / off of the reset relay.

[0020] Preferably, the PLC controller is signal-connected to the temperature sensor, and the PLC controller reports an over-temperature alarm when the temperature of the inner cavity reaches the set limit value.

[0021] Preferably, it further includes: an alarm device;

[0022] The alarm device is signal-connected to the PLC controller, and the PLC controller controls the alarm device to give an alarm when the temperature of the inner cavity reaches the set limit value.

[0023] Preferably, the alarm device includes at least any one of the following: an indicator light, a buzzer and an audible and visual alarm.

[0024] Preferably, the heat dissipation housing has a square structure.

[0025] The present utility model provides a heat dissipation control system for an electric valve actuator of an air - conditioner steam pipeline. A heat dissipation housing is sleeved outside the electric valve actuator. A press - in type heat dissipation fan and a temperature control unit are arranged inside the heat dissipation housing. The temperature control unit controls the operation of the press - in type heat dissipation fan when the temperature is greater than a set temperature threshold value for heat dissipation. This solves the problem that the chip of the electric valve actuator in the existing air - conditioner steam pipeline breaks down and cannot work normally in a high - temperature and high - humidity environment, can improve the service life of the electric valve actuator, and improve the working environment of the actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below.

[0027] Figure 1 FIG. is a schematic diagram of a heat dissipation control system for an electric valve actuator of an air - conditioner steam pipeline provided by the present utility model.

[0028] Figure 2 FIG. is a schematic circuit structure diagram of the temperature control unit provided by an embodiment of the present utility model.

[0029] Figure 3 FIG. is a schematic diagram of the electrical connection of the circuit main board of the electric valve actuator provided by an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present utility model, the embodiments of the present utility model will be further described in detail below with reference to the drawings and embodiments.

[0031] Aiming at the problem that the electric valve actuator of the current air - conditioner steam pipeline is prone to failure in a high - temperature and high - humidity environment, the present utility model provides a heat dissipation control system for an electric valve actuator of an air - conditioner steam pipeline, which solves the problem that the chip of the electric valve actuator in the existing air - conditioner steam pipeline breaks down and cannot work normally in a high - temperature and high - humidity environment, can improve the service life of the electric valve actuator, and improve the working environment of the actuator.

[0032] As Figure 1 shown, a heat dissipation control system for an electric valve actuator of an air - conditioner steam pipeline includes: a heat dissipation housing 1, a press - in type heat dissipation fan 2, and a temperature control unit. The heat dissipation housing is sleeved outside the electric valve actuator 5. The heat dissipation housing 1 is provided with regularly arranged heat dissipation holes. The inner cavity of the heat dissipation housing 1 is provided with the press - in type heat dissipation fan 2. The press - in type heat dissipation fan 2 is used to press the external natural wind into the inner cavity to dissipate heat from the electric valve actuator 5. The temperature control unit is signal - connected to the press - in type heat dissipation fan. The temperature control unit controls the operation of the press - in type heat dissipation fan 2 when the temperature in the inner cavity is greater than a set temperature threshold value to reduce the temperature in the inner cavity.

[0033] Specifically, the heat dissipation housing 1 is provided with heat dissipation holes, which can take away the high temperature inside the electric valve actuator 5 through air cooling from the heat dissipation holes, so that the main board and chip of the electric valve actuator 5 can ensure a healthy working temperature; the press-in type cooling fan 2 presses the external natural wind into the electric valve actuator for heat exchange, thereby reducing the temperature of the actuator main board and chip. The temperature control unit controls the operation of the press-in type cooling fan according to the temperature collected from the inner cavity of the heat dissipation housing, so as to cool down the electric valve actuator. This system can improve the service life of the electric valve actuator and improve the working environment of the actuator.

[0034] Further, as Figure 2 shown, the temperature control unit includes: a thermostat 3, a temperature sensor 4, and a temperature control relay KM1. The input end of the thermostat 3 is connected to the output end of the temperature sensor 4, and the output end of the thermostat 3 is connected to the control end of the temperature control relay KM1. The temperature control relay KM1 is connected in series between the power supply and the power supply end of the press-in type cooling fan 2. When the temperature detected by the temperature sensor 4 in the inner cavity is greater than the set temperature threshold, the thermostat 3 controls the temperature control relay KM1 to conduct, so as to conduct the electrical connection between the press-in type cooling fan 2 and the power supply.

[0035] In practical applications, as Figure 2 shown, the control unit includes a thermostat 3, a temperature sensor 4, and a temperature control relay KM1; the thermostat 3 is used to input the temperature collected by the temperature sensor 4 into the internal circuit to control the on-off of the contacts of the temperature control relay KM1. When the temperature input into the thermostat exceeds 40°C, it controls the contacts of the temperature control relay KM1 to act, thereby turning on the press-in type cooling fan 2. When the input temperature is lower than 40°C, the press-in type cooling fan 2 is turned off; the temperature sensor is used to collect the temperature of the inner cavity during the operation of the electric valve actuator 5; the temperature control relay 5 is used to control the switch of the press-in type cooling fan 2.

[0036] Further, the thermostat is provided with a display screen for displaying the temperature of the inner cavity in real time. Managers can understand the temperature of the inner cavity in real time through the display screen.

[0037] This system further includes: a PLC controller; the PLC controller is signal-connected to the circuit main board of the electric valve actuator for controlling the execution action of the electric valve actuator.

[0038] Further, the circuit main board of the electric valve actuator is provided with an interface module 6. The interface module 6 is provided with an L terminal, an N terminal, an AI terminal, and an AO terminal; the L terminal and the N terminal are used as power input terminals, the AI terminal is used to receive the PLC output signal, and the AO terminal is used to send the control feedback value.

[0039] The system further includes: a reset relay; the control end of the reset relay is connected to the output end of the PLC controller, the input end of the reset relay is connected to the L terminal, and the output end of the reset relay is connected to the power supply; the PLC controller controls the on / off of the reset relay to reset the electric valve actuator.

[0040] In practical applications, as Figure 3 shown, the PLC controller is provided with an AI module, an AO module, and a DO module. The PLC controller gives an analog quantity, which passes through the AI module to the interface module 6 of the actuator main board to generate an opening voltage. After receiving the analog quantity signal from the interface module 6 on the actuator main board to the AO module, the PLC controller compares the given analog quantity of the AI module with the analog quantity value of the feedback AO module. When the error exceeds a certain range, it outputs to the DO module to control the energization of the coil of the reset relay KM2, thereby disconnecting the normally closed point of the reset relay KM2. After a delay of 1 minute, the output to the DO module is cancelled, and the coil of the reset relay is disconnected to restore the normally closed point of the reset relay KM2, thus completing the reset of the electric valve actuator; the AI module is used to receive the analog quantity given by the PLC, pass through the AI module to the interface module 6 of the actuator main board to generate an opening voltage; the AO module is used to receive the analog quantity signal from the interface module 6 of the actuator main board to the AO module and transmit it to the PLC; the DO module is used to receive the program instruction of the PLC to energize and close the coil of the reset relay KM2 to complete the reset of the electric actuator; the reset relay KM2 is used to cooperate with the logic commands of the interface module 6 of the actuator main board, the PLC, and the DO module to complete the reset of the electric valve actuator.

[0041] Further, the PLC controller is signal-connected to the temperature sensor, and the PLC controller reports an over-temperature alarm when the temperature in the inner cavity reaches the set limit value.

[0042] The system further includes: an alarm device; the alarm device is signal-connected to the PLC controller, and the PLC controller controls the alarm device to give an alarm when the temperature in the inner cavity reaches the set limit value.

[0043] Further, the alarm device includes at least any one of the following: an indicator light, a buzzer, and an audible and visual alarm.

[0044] Further, the heat dissipation housing has a square structure.

[0045] It can be seen that the present utility model provides a heat dissipation control system for an electric valve actuator of an air conditioner steam pipeline. A heat dissipation outer shell is sleeved outside the electric valve actuator. A press-in type heat dissipation fan and a temperature control unit are arranged inside the heat dissipation outer shell. The temperature control unit controls the operation of the press-in type heat dissipation fan when the temperature is greater than the set temperature threshold for heat dissipation. This solves the problem that the chip of the electric valve actuator in the existing air conditioner steam pipeline crashes in a high-temperature and high-humidity environment, making it unable to work properly, and can improve the service life of the electric valve actuator and improve the working environment of the actuator.

[0046] The structure, features and function effects of the present utility model have been described in detail based on the illustrated embodiments above. The above are only the preferred embodiments of the present utility model, but the present utility model is not limited to the implementation scope shown in the drawings. Any changes made according to the concept of the present utility model, or equivalent embodiments modified into equivalent changes, should still be within the protection scope of the present utility model as long as they do not exceed the spirit covered by the description and the drawings.

Claims

1. A heat dissipation control system for an electric valve actuator of an air conditioner steam pipeline, characterized in that, Comprising: A heat dissipation housing, a press-in type heat dissipation fan, and a temperature control unit; The heat dissipation housing is sleeved outside the electric valve actuator. The heat dissipation housing is provided with regularly arranged heat dissipation holes. The inner cavity of the heat dissipation housing is provided with the press-in type heat dissipation fan, and the press-in type heat dissipation fan is used to press the external natural wind into the inner cavity to dissipate heat from the electric valve actuator; The temperature control unit is signal-connected to the press-in type heat dissipation fan. The temperature control unit controls the operation of the press-in type heat dissipation fan when the temperature in the inner cavity is greater than the set temperature threshold to reduce the temperature in the inner cavity.

2. The heat dissipation control system of the electric valve actuator for the air-conditioning steam pipeline according to claim 1, characterized in that, The temperature control unit includes: a thermostat, a temperature sensor, and a temperature control relay; The input end of the thermostat is connected to the output end of the temperature sensor, and the output end of the thermostat is connected to the control end of the temperature control relay; The temperature control relay is connected in series between the power supply and the power supply end of the press-in type heat dissipation fan; The thermostat controls the temperature control relay to conduct when the temperature sensor detects that the temperature in the inner cavity is greater than the set temperature threshold, so as to conduct the electrical connection between the press-in type heat dissipation fan and the power supply.

3. The heat dissipation control system of the electric valve actuator for the air-conditioning steam pipeline according to claim 2, characterized in that, The thermostat is provided with a display screen for displaying the temperature in the inner cavity in real time.

4. The heat dissipation control system of the electric valve actuator for the air-conditioning steam pipeline according to claim 3, characterized in that, Further comprising: A PLC controller; The PLC controller is signal-connected to the circuit board of the electric valve actuator and is used to control the execution action of the electric valve actuator.

5. The heat dissipation control system of the electric valve actuator for the air conditioner steam pipeline according to claim 4, characterized in that, The circuit board of the electric valve actuator is provided with an interface module, and the interface module is provided with an L terminal, an N terminal, an AI terminal, and an AO terminal; The L terminal and the N terminal are used as power input terminals. The AI terminal is used to receive the PLC output signal, and the AO terminal is used to send the control feedback value.

6. The heat dissipation control system of the electric valve actuator for the air-conditioning steam pipeline according to claim 5, characterized in that, Further comprising: A reset relay; The control end of the reset relay is connected to the output end of the PLC controller. The input end of the reset relay is connected to the L terminal, and the output end of the reset relay is connected to the power supply; The PLC controller resets the electric valve actuator by controlling the on / off of the reset relay.

7. The heat dissipation control system of the electric valve actuator for the air-conditioning steam pipeline according to claim 6, characterized in that, The PLC controller is signal-connected to the temperature sensor, and the PLC controller reports an over-temperature alarm when the temperature in the inner cavity reaches the set limit value.

8. The heat dissipation control system of the electric valve actuator for the air-conditioning steam pipeline according to claim 7, characterized in that, Further comprising: An alarm device; The alarm device is signal-connected to the PLC controller, and the PLC controller controls the alarm device to give an alarm when the temperature in the inner cavity reaches the set limit value.

9. The heat dissipation control system of the electric valve actuator for the air conditioner steam pipeline according to claim 8, characterized in that, The alarm device includes at least any one of the following: an indicator light, a buzzer, and an audible and visual alarm.

10. The heat dissipation control system of the electric valve actuator for the air-conditioning steam pipeline according to any one of claims 1 to 9, characterized in that, The heat dissipation housing has a square structure.

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