Self-adaptive regulating valve group capable of being finely regulated and controlled

Abstract

The utility model discloses a self-adaptive regulating valve group capable of being finely regulated and controlled, which comprises an analog quantity regulating valve, a digital quantity shutoff valve, a temperature sensor, a control unit, a primary water supply pipeline and a secondary water supply pipeline, and the temperature sensor is arranged on a secondary water supply pipeline of the heat exchange equipment, and comprises an analog quantity regulating valve and a digital quantity shutoff valve. The control unit collects secondary water supply temperature in a secondary water supply pipeline of equipment through the temperature sensor, outputs valve control parameters through internal calculation, and sends the valve control parameters to the analog quantity regulating valve and the digital quantity shutoff valve, so that valve control and flow regulation are realized; the secondary water supply temperature can be stabilized through small flow, at the moment, the analog quantity adjusting valve is independently used for adjusting, and the digital quantity shutoff valve is kept shut off; when the parameter of the primary heat source temperature is low, the secondary water supply temperature is stabilized.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valve groups, and in particular to a regulating valve group that is adaptive and can be finely regulated. Background Art

[0002] Heat exchange equipment is a device that transfers heat from hot fluid to cold fluid. Heat exchange equipment is widely used in oil refining, chemical industry, light industry, pharmaceutical industry, machinery, food processing, power and atomic energy industry. Usually, in the equipment investment of some chemical plants, heat exchangers account for 30% of the total investment; in modern refineries, heat exchangers account for more than 40% of the total process equipment investment; in the desalination industry, almost all equipment is composed of heat exchangers. The advancement, rationality and reliability of the heat exchanger directly affect the quality, quantity and cost of the product. The heat exchanger is equipped with a regulating valve group.

[0003] For example, a temperature control valve group and a water heater with announcement number CN219119945U and authorization announcement date 2023.06.02, the temperature control valve group includes a shell, a water mixing component and a control component; the water mixing component includes a mixing tank, a cold water pipe, a hot water pipe, a water outlet pipe and an electronic control valve, the mixing tank is fixedly connected to the shell, a mixing water chamber is provided in the mixing tank, the cold water pipe and the hot water pipe are both connected to the mixing water chamber, the water outlet pipe is connected to the mixing tank and connected to the mixing water chamber, and the electronic control valve is used to control the flow of water in the hot water pipe and the cold water pipe; the control component includes a controller and a mixing water temperature sensor, the mixing water temperature sensor is used to detect the temperature of water in the mixing water chamber, and the electronic control valve and the mixing water temperature sensor are both electrically connected to the controller.

[0004] As mentioned above and in the prior art, when the heat exchange equipment switches between heat sources with different parameters, a large opening difference occurs in the valve, resulting in unstable secondary water supply temperature and large fluctuations, causing the analog control valve to open larger or smaller or even exceed the adjustment range. Therefore, it is urgent to design an adaptive and finely regulated control valve group to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a self-adaptive and finely regulated regulating valve group to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A regulating valve group that is adaptive and can be finely regulated includes an analog regulating valve, a digital shut-off valve, a temperature sensor, a control unit, a primary water supply pipeline, and a secondary water supply pipeline. The analog regulating valve and the digital shut-off valve are both installed on the primary water supply pipeline of a heat exchange device, and the temperature sensor is installed on the secondary water supply pipeline of the heat exchange device. The analog regulating valve, the digital shut-off valve, and the temperature sensor are all electrically connected to the control unit via cables.

[0008] Furthermore, the analog regulating valve and the digital shut-off valve are installed in parallel on a primary water supply pipeline of the heat exchange equipment.

[0009] Furthermore, two pipes are installed in parallel in the primary water supply pipe, and an analog regulating valve and a digital shut-off valve are installed on each pipe respectively.

[0010] Furthermore, a PLC controller is provided inside the control unit, and the PLC controller controls the opening and closing of the analog regulating valve and the digital shut-off valve.

[0011] In the above technical scheme, the utility model provides an adaptive and finely regulated regulating valve group, (1) through the analog regulating valve, digital shut-off valve, temperature sensor and control unit, the control unit collects the secondary water supply temperature in the secondary water supply pipe of the equipment through the temperature sensor, outputs the valve control parameter after internal calculation, and sends it to the analog regulating valve and the digital shut-off valve to realize valve control and adjust the flow. When the parameter of the primary heat source temperature is high, a small flow can stabilize the secondary water supply temperature. At this time, the analog regulating valve can be used alone for adjustment, and the digital shut-off valve remains closed; when the parameter of the primary heat source temperature is low, in order to stabilize the secondary water supply temperature, a large primary flow is required. At this time, the digital shut-off valve is opened to output a certain flow, and the analog regulating valve is used to accurately control the flow to achieve the stability of the secondary water supply temperature. At the same time, the opening of the regulating valve is kept within a reasonable range, reducing the wear of the regulating valve, solving the problem that when the heat exchange equipment switches between different primary heat sources, the valve has a large opening difference, resulting in unstable secondary water supply temperature and large fluctuations, and solving the problem that the opening of the analog regulating valve is large or small or even exceeds the adjustment range. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0013] Figure 1A three-dimensional structural schematic diagram is provided for an embodiment of a regulating valve group that is adaptive and can be finely regulated according to the utility model.

[0014] Description of reference numerals:

[0015] 1. Analog regulating valve; 2. Digital shut-off valve; 3. Temperature sensor; 4. Control unit; 5. Primary water supply pipeline; 6. Secondary water supply pipeline. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0017] like Figure 1 As shown, an adaptive and finely regulated regulating valve group provided by an embodiment of the utility model includes an analog regulating valve 1, a digital shut-off valve 2, a temperature sensor 3, a control unit 4, a primary water supply pipe 5 and a secondary water supply pipe 6. The analog regulating valve 1 and the digital shut-off valve 2 are both installed on the primary water supply pipe 5 of the heat exchange equipment, and the temperature sensor 3 is installed on the secondary water supply pipe 6 of the heat exchange equipment. The analog regulating valve 1, the digital shut-off valve 2 and the temperature sensor 3 are all electrically connected to the control unit 4 through cables.

[0018] The utility model provides an adaptive and finely regulated regulating valve group, comprising an analog regulating valve 1, a digital shut-off valve 2, a temperature sensor 3, a control unit 4, a primary water supply pipeline 5 and a secondary water supply pipeline 6. The analog regulating valve 1 and the digital shut-off valve 2 are both installed on the primary water supply pipeline 5 of the heat exchange equipment, and the temperature sensor 3 is installed on the secondary water supply pipeline 6 of the heat exchange equipment. The analog regulating valve 1, the digital shut-off valve 2 and the temperature sensor 3 are all electrically connected to the control unit 4 through cables. The PEL controller of the control unit 4 collects the secondary water supply temperature of the equipment through the temperature sensor 3, outputs the valve control parameters after internal calculation, and sends them to the analog regulating valve 1 and the digital shut-off valve 2 to realize valve control and adjust the flow rate, thereby solving the problem that when the heat exchange equipment switches between different parameter heat sources, a large opening difference of the valve is caused, resulting in unstable secondary water supply temperature and large fluctuations, and solving the problem that the analog regulating valve 1 has a large or small opening or even exceeds the adjustment range.

[0019] Beneficial effect: The control unit 4 collects the secondary water supply temperature in the secondary water supply pipe 6 of the equipment through the temperature sensor 3, and outputs the valve control parameters through internal calculation, which are sent to the analog regulating valve 1 and the digital shut-off valve 2 to realize valve control and adjust the flow. When the parameters of the primary heat source temperature are high, a smaller flow rate can stabilize the secondary water supply temperature. At this time, the analog regulating valve 1 can be used alone for adjustment, and the digital shut-off valve 2 remains closed; when the parameters of the primary heat source temperature are low, in order to stabilize the secondary water supply temperature, a larger primary flow rate is required. At this time, the digital shut-off valve 2 is opened to output a certain flow rate. At the same time, the analog regulating valve 1 is used to accurately control the flow rate to achieve a stable secondary water supply temperature. At the same time, the regulating valve opening is kept within a reasonable range, reducing the wear of the regulating valve, and solving the problem that when the heat exchange equipment switches between different parameters of the primary heat source, the valve has a large opening difference, resulting in unstable secondary water supply temperature and large fluctuations, and solving the problem that the analog regulating valve 1 has a large or small opening or even exceeds the adjustment range.

[0020] In one embodiment provided by the present utility model, Figure 1 As shown, the analog regulating valve 1 and the digital shut-off valve 2 are installed in parallel on the primary water supply pipeline of the heat exchange equipment, so that the analog regulating valve 1 and the digital shut-off valve 2 can be used separately.

[0021] In another embodiment provided by the present utility model, Figure 1 As shown, two pipes are installed in parallel in the primary water supply pipe 5, and the analog regulating valve 1 and the digital shut-off valve 2 are installed on each pipe respectively.

[0022] In another embodiment provided by the present utility model, Figure 1 As shown, a PLC controller is provided inside the control unit 4, and the PLC controller controls the opening and closing of the analog regulating valve 1 and the digital shut-off valve 2. The PLC controller senses the temperature of the water passing through the secondary water supply pipe 6 and transmits the sensed information to the control unit 4.

[0023] Working principle: When in use, the PEL controller of the control unit 4 collects the secondary water supply temperature of the equipment through the temperature sensor 3, and outputs the valve control parameters through internal calculation, and sends them to the analog control valve 1 and the digital shut-off valve 2 to realize valve control and adjust the flow. When the parameters of the primary heat source temperature are high, a smaller flow rate can stabilize the secondary water supply temperature. At this time, the analog control valve 1 can be used alone for adjustment, and the digital shut-off valve 2 remains closed; when the parameters of the primary heat source temperature are low, in order to stabilize the secondary water supply temperature, a larger primary flow rate is required. At this time, the digital shut-off valve 2 is opened to output a certain flow rate. At the same time, the analog control valve 1 is used to accurately control the flow rate to achieve a stable secondary water supply temperature. At the same time, the opening of the control valve is within a reasonable range, reducing the wear of the control valve, and solving the problem that when the heat exchange equipment switches between different parameters of the heat source, the valve has a large opening difference, resulting in unstable secondary water supply temperature and large fluctuations, and solving the problem that the analog control valve 1 has a large or small opening or even exceeds the adjustment range.

[0024] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A self-adaptive and finely controllable regulating valve group, comprising an analog regulating valve (1), a digital shut-off valve (2), a temperature sensor (3), a control unit (4), a primary water supply pipeline (5) and a secondary water supply pipeline (6), characterized in that: The analog regulating valve (1) and the digital shut-off valve (2) are both installed on a primary water supply pipeline (5) of a heat exchange device, and the temperature sensor (3) is installed on a secondary water supply pipeline (6) of the heat exchange device. The analog regulating valve (1), the digital shut-off valve (2) and the temperature sensor (3) are all electrically connected to a control unit (4) via cables.

2. The self-adaptive and finely controllable regulating valve group according to claim 1, characterized in that: The analog regulating valve (1) and the digital shut-off valve (2) are installed in parallel on a primary water supply pipeline of the heat exchange equipment.

3. The self-adaptive and finely controllable regulating valve group according to claim 2, characterized in that: The primary water supply pipeline (5) has two pipelines installed in parallel, and an analog regulating valve (1) and a digital shut-off valve (2) are installed on each pipeline respectively.

4. The self-adaptive and finely controllable regulating valve group according to claim 3, characterized in that: The control unit (4) is internally provided with a PLC controller, and the PLC controller controls the opening and closing of the analog regulating valve (1) and the digital shut-off valve (2).

Images