Circulating water through temperature control valve device

Abstract

The utility model relates to a circulating water through temperature control valve device which comprises an inlet water temperature transmitter, a return water temperature transmitter, a return water through valve and a valve control unit. The water inlet temperature transmitter is mounted on an equipment water inlet pipeline; the return water temperature transmitter is mounted on an equipment return water pipeline; the water return through valve is installed on an equipment water return pipeline and comprises a valve plate and a through hole. The water inlet temperature transmitter is connected with the valve control unit; the return water temperature transmitter is connected with the valve control unit; the valve control unit is connected with the water return through valve and used for controlling opening and closing of the water return through valve according to the collected water inlet temperature information and the collected water return temperature information and keeping low-flow operation through the through hole when the water return through valve is in a closed state. According to the utility model, the water return through valve can be closed in the shutdown process of the equipment, so that the circulating water flow when the equipment is stopped is reduced, the circulating water in the cooler of the equipment is ensured to flow, and the cooler is prevented from scaling to cause shutdown of the equipment due to high temperature when the equipment runs.

Description

Technical Field

[0001] The utility model belongs to the technical field of valve control, and particularly relates to a circulating water through-core temperature control valve device. Background Technique

[0002] At present, in the compressed air industry, most of the inlet and outlet valves of the circulating water systems of compressors, dryers, and desiccant dryers are normally open and normally closed valves. When the equipment is shut down or under maintenance, the circulating water is always in full-load operation, causing the circulating water pump in the cooling system to do useless work by pressurizing the circulating water volume for the shutdown equipment. However, if the valves of the equipment circulating water system are directly cut off during the equipment shutdown process, it will cause the equipment cooler to scale due to the non-flowing circulating water, which will affect the cooler efficiency for a long time and reduce the service life of the cooler. Content of the Utility Model

[0003] The purpose of the utility model is to provide a circulating water through-core temperature control valve device, which can reduce the circulating water flow during equipment shutdown by closing the return water through-core valve, ensure the flow of circulating water in the equipment cooler to prevent the cooler from scaling, and prevent the equipment from shutting down due to high temperature during operation.

[0004] The utility model provides a circulating water through-core temperature control valve device, which includes an inlet water temperature transmitter, a return water temperature transmitter, a return water through-core valve, and a valve control unit;

[0005] The inlet water temperature transmitter is installed on the equipment inlet water pipeline;

[0006] The return water temperature transmitter is installed on the equipment return water pipeline;

[0007] The return water through-core valve is installed on the equipment return water pipeline and includes a valve plate and a through-core hole;

[0008] The inlet water temperature transmitter is connected to the valve control unit for collecting inlet water temperature information and sending it to the valve control unit;

[0009] The return water temperature transmitter is connected to the valve control unit for collecting return water temperature information and sending it to the valve control unit;

[0010] The valve control unit is connected to the return water through-core valve for controlling the opening and closing of the return water through-core valve according to the collected inlet water temperature information and return water temperature information, and maintaining low-flow operation through the through-core hole when the return water through-core valve is in the closed state.

[0011] Further, the valve control unit includes a microprocessor, and the microprocessor is used to control the opening and closing of the return water through-core valve according to the difference between the inlet and return water temperatures of the circulating water and the set value of the valve opening and closing temperature difference.

[0012] Further, the valve control unit further includes a temperature acquisition circuit, which is connected to the microprocessor, the inlet water temperature transmitter, and the return water temperature transmitter, and is configured to collect the temperature information of the inlet water temperature transmitter and the return water temperature transmitter and send the temperature information to the microprocessor.

[0013] Further, the valve control unit further includes a valve control circuit, and the valve control circuit includes a valve actuator, and the valve actuator is connected to the microprocessor and is configured to receive the valve opening and closing instruction of the microprocessor and perform the valve opening and closing action.

[0014] Further, the valve control unit further includes a display screen, and the display screen is connected to the microprocessor and is configured to display the temperature information and the valve state information.

[0015] Further, the valve control unit further includes a power processing circuit, a memory, and a modbus communication processor connected to the microprocessor.

[0016] Further, an inlet valve is provided on the equipment inlet water pipeline.

[0017] By means of the above solution, through the circulating water through-core temperature control valve device, by installing the temperature transmitters on the inlet and return water, the inlet and return water temperatures of the equipment circulating water are collected in real time, and the operating state of the equipment and the operating state of the equipment cooler are obtained through the collected temperature. During the shutdown process of the equipment, by closing the return water through-core valve, the circulating water flow during equipment shutdown is reduced, ensuring that the circulating water in the equipment cooler flows to prevent the cooler from scaling, and realizing the efficient operation of the equipment circulating water system.

[0018] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it in accordance with the content of the specification, the following is a detailed description of the preferred embodiment of the present invention in conjunction with the accompanying drawings. Brief Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the circulating water through-core temperature control valve device of the present invention;

[0020] Figure 2 It is a schematic structural diagram of the return water through-core valve of the present invention;

[0021] Figure 3 It is a block diagram of the structure of the valve control unit of the present invention;

[0022] Figure 4 It is a circuit connection diagram of the valve control unit of the present invention.

[0023] Markings in the figure:

[0024] 1. Inlet water temperature transmitter; 2 - Return water temperature transmitter; 3. Return water through - hole valve; 31 - Valve plate; 32 - Through - hole; 4. Valve control unit; 5. Inlet valve. Detailed implementation mode

[0025] The following combines the drawings and embodiments to further describe in detail the specific implementation mode of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0026] Refer Figure 1 、 Figure 2 As shown in the figure, this embodiment provides a circulating water through - hole temperature control valve device, including an inlet water temperature transmitter 1, a return water temperature transmitter 2, a return water through - hole valve 3, and a valve control unit 4; the inlet water temperature transmitter 1 is installed on the equipment inlet water pipeline; the return water temperature transmitter 2 is installed on the equipment return water pipeline; the return water through - hole valve is installed on the equipment return water pipeline, including a valve plate 31 and a through - hole 32; the inlet water temperature transmitter 1 is connected to the valve control unit 4 for collecting inlet water temperature information and sending it to the valve control unit 4; the return water temperature transmitter 2 is connected to the valve control unit 4 for collecting return water temperature information and sending it to the valve control unit 4; the valve control unit 4 is connected to the return water through - hole valve 3 for controlling the opening and closing of the return water through - hole valve 3 according to the collected inlet water temperature information and return water temperature information, and maintaining low - flow operation through the through - hole 32 when the return water through - hole valve 3 is in the closed state. The equipment inlet water pipeline is provided with an inlet valve 5.

[0027] This circulating water through - hole temperature control valve device, through the temperature transmitters installed on the inlet and return water, can collect the inlet and return water temperatures of the equipment circulating water in real - time, and obtain the operation state of the equipment and the operation state of the equipment cooler through the collected temperatures. During the equipment shutdown process, by closing the return water through - hole valve, the circulating water flow during equipment shutdown is reduced, ensuring the flow of circulating water in the equipment cooler to prevent the cooler from scaling, and realizing the efficient operation of the equipment circulating water system.

[0028] Refer Figure 3 、 Figure 4As shown, the valve control unit 4 includes a microprocessor, a temperature acquisition circuit, a valve control circuit, a display screen, a power supply processing circuit, a memory, and a Modbus communication processor. Among them, the microprocessor is used to control the opening and closing of the return water through valve 3 according to the temperature difference between the inlet and return water of the circulating water and the set value of the temperature difference for valve opening and closing. The temperature acquisition circuit is connected to the microprocessor, the inlet water temperature transmitter 1, and the return water temperature transmitter 2, and is used to collect the temperature information of the inlet water temperature transmitter 1 and the return water temperature transmitter 2, and send the temperature information to the microprocessor. The valve control circuit includes a valve actuator, and the valve actuator is connected to the microprocessor and is used to receive the valve opening and closing instruction from the microprocessor and execute the valve opening and closing action. The display screen is connected to the microprocessor and is used to display the temperature information and the valve status information. The power supply processing circuit, the memory, and the Modbus communication processor are connected to the microprocessor and are used for power management, data storage, and communication processing respectively.

[0029] In a specific example, the microprocessor uses a PLC. The PLC can perform simple logical judgments (which can be achieved through existing technologies). For example:

[0030] The temperature difference is calculated through the temperature acquisition of the inlet and return water temperature transmitters, and the set value of the temperature difference for valve opening and closing is set. According to common sense, when the temperature difference between the inlet and return water of the circulating water is less than the set value of the temperature difference for valve opening and closing, the equipment is in a shutdown state. The control unit sends a valve closing command, and the return water through valve installed on the equipment return water pipeline closes. The circulating water flows through the through hole of the return water through valve, achieving the purpose of reducing the circulating water flow rate, reducing the energy consumption of the cooling system, and ensuring that the circulating water of the equipment is in a flowing state, slowing down the equipment scaling time. Conversely, when the equipment is in an operating state, the control unit sends a valve opening command, and the return water through valve installed on the equipment return water pipeline opens. The circulating water passes through the fully opened return water through valve to ensure the normal use of the equipment circulating water.

[0031] In other examples, the scale control value of the cooler inlet and return water can also be set in the PLC to judge the size of the temperature difference between the inlet and return water of the circulating water and the scale control value of the cooler inlet and return water during the stable operation of the equipment. According to common sense, if the temperature difference between the inlet and return water of the circulating water is greater than the scale control value of the cooler inlet and return water, it means that the temperature difference between the inlet and return water of the equipment cooler is too large, and the cooling effect of the cooler is not obvious due to scaling or other reasons. The control unit gives an alarm to prompt the on-site staff to conduct a check, so as to achieve the purpose of reducing the abnormal operation and low efficiency of the equipment caused by cooler problems.

[0032] This circulating water through-hole temperature control valve device judges the valve opening state through temperature, reducing the circulating water consumption during the equipment shutdown process. After the valve is closed, the through-hole diameter ensures the flow of the equipment cooling system, preventing the cooler from scaling due to non-flowing circulating water and affecting the heat exchange efficiency. By judging the scaling situation of the cooler through the temperature difference between the inlet and return water, it can timely remind the cooler to be cleaned.

[0033] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A circulating water through-heart temperature control valve device, characterized in that: It comprises an inlet water temperature transmitter (1), a return water temperature transmitter (2), a return water through-valve (3), and a valve control unit (4); The water inlet temperature transmitter (1) is installed on the water inlet pipe of the equipment; The return water temperature transmitter (2) is installed on the return water pipeline of the equipment; The water return through-hole valve is installed on the water return pipe of the equipment, and comprises a valve plate (31) and a through-hole (32); The water inlet temperature transmitter (1) is connected to the valve control unit (4) and is used to collect water inlet temperature information and send it to the valve control unit (4); The return water temperature transmitter (2) is connected to the valve control unit (4) and is used to collect return water temperature information and send it to the valve control unit (4); The valve control unit (4) is connected to the water return through-hole valve (3) and is used to control the opening and closing of the water return through-hole valve (3) according to the collected water inlet temperature information and return water temperature information, and to maintain low flow operation through the through-hole (32) when the water return through-hole valve (3) is in a closed state.

2. The circulating water through-heart temperature control valve device according to claim 1, characterized in that: The valve control unit (4) comprises a microprocessor, and the microprocessor is used to control the opening and closing of the return water through-hole valve (3) according to the circulating water inlet and return water temperature difference and the valve opening and closing temperature difference setting value.

3. The circulating water through-heart temperature control valve device according to claim 2 is characterized in that: The valve control unit (4) further comprises a temperature acquisition circuit, which is connected to the microprocessor, the inlet water temperature transmitter (1) and the return water temperature transmitter (2), and is used to acquire temperature information from the inlet water temperature transmitter (1) and the return water temperature transmitter (2), and to send the temperature information to the microprocessor.

4. The circulating water through-heart temperature control valve device according to claim 3 is characterized in that: The valve control unit (4) also includes a valve control circuit, which includes a valve actuator. The valve actuator is connected to the microprocessor and is used to receive valve opening and closing instructions from the microprocessor and execute valve opening and closing actions.

5. The circulating water through-heart temperature control valve device according to claim 4 is characterized in that: The valve control unit (4) also includes a display screen, which is connected to the microprocessor and is used to display temperature information and valve status information.

6. The circulating water through-heart temperature control valve device according to claim 5, characterized in that: The valve control unit (4) also includes a power supply processing circuit, a memory and a modbus communication processor connected to the microprocessor.

7. The circulating water through-heart temperature control valve device according to claim 1, characterized in that: The water inlet pipe of the equipment is provided with a water inlet valve (5).

Images