An industrial dynamic heat recovery utilization control system

Abstract

The utility model discloses an industrial dynamic heat recycling control system, it includes double cycle heat exchange subassembly, cold and hot conversion device and overhauls passageway, double cycle heat exchange subassembly is used for refrigerant and refrigerant water, the heat exchange of domestic hot water, cold and hot conversion device is connected between refrigerant input and output of double cycle heat exchange subassembly, is used for switching the flow path direction of refrigerant in double cycle heat exchange subassembly, overhauls passageway and communicates its internal cavity through the outer wall of double cycle heat exchange subassembly. The utility model discloses adopts double cycle heat exchange, cold and hot switching and overhauls passageway design, has reached the effect of high -efficient heat recovery and convenient overhauls.

Description

Technical Field

[0001] This utility model relates to the field of heat recovery and utilization technology, and in particular to an industrial dynamic heat recovery and utilization control system. Background Technology

[0002] In today's industrial production and daily life, process cooling and domestic hot water supply are of paramount importance. With the continuous development of factories and enterprises, the demand for process cooling is increasing, ensuring the stable operation of various industrial equipment and improving production efficiency and product quality. Simultaneously, to improve the quality of life for employees, factories and enterprises typically install domestic hot water systems to meet their basic daily needs. This simultaneous need for both cooling and heating is becoming increasingly common in various factories and enterprises, placing higher demands on the rational utilization and efficient supply of energy.

[0003] In the past, when both cooling and heating were required simultaneously, separate energy sources were typically used to meet the demands. To produce chilled water, chiller units were generally used. Their working principle involves a compressor refrigeration cycle where refrigerant evaporates in an evaporator, absorbing heat and thus cooling the water to produce chilled water. For producing domestic hot water, boiler equipment was used to heat the water to the required temperature by burning fuel or using electricity. These two methods are traditional and common solutions, widely used in many factories and enterprises.

[0004] However, these existing solutions have significant drawbacks. On the one hand, traditional configurations lack dynamic or automatic detection capabilities, making it impossible to adjust in real time according to actual cooling and heating demands, resulting in energy waste. On the other hand, multi-loop water / oil circuit designs, such as those in the reference patent, are prone to scaling or clogging, and due to the lack of easily accessible maintenance structures, repairs are difficult once a malfunction occurs, affecting the normal operation of the entire system. Utility Model Content

[0005] This application provides an industrial dynamic heat recovery and utilization control system, which adopts a dual-cycle heat exchange, cold and hot switching and maintenance channel design, achieving the effects of high-efficiency heat recovery and easy maintenance.

[0006] This application provides an industrial dynamic heat recovery and utilization control system, which adopts the following technical solution:

[0007] An industrial dynamic heat recovery and utilization control system includes a dual-circulation heat exchange component, a heat exchanger, and a maintenance passage. The dual-circulation heat exchange component is used for heat exchange between refrigerant and chilled water and domestic hot water. The heat exchanger is connected between the refrigerant input end and the output end of the dual-circulation heat exchange component and is used to switch the flow path direction of the refrigerant in the dual-circulation heat exchange component. The maintenance passage passes through the outer wall of the dual-circulation heat exchange component and connects to its internal cavity.

[0008] By adopting the above technical solution, the industrial dynamic heat recovery and utilization control system designed in this utility model can realize the heat exchange between refrigerant and chilled water and domestic hot water in use, so as to meet the needs of simultaneous cooling and heating; the heat conversion device can switch the flow path direction of refrigerant in the dual circulation heat exchange component to realize dynamic heat recovery and utilization; the maintenance channel runs through the outer wall of the dual circulation heat exchange component and connects to the internal cavity, which facilitates the maintenance of the dual circulation heat exchange component.

[0009] Preferably, the dual-circulation heat exchange assembly includes a first heat exchange unit and a second heat exchange unit arranged in series. The first heat exchange unit and the second heat exchange unit are connected in parallel through a pipe, and the heat exchange device and the parallel pipe form a switchable flow path.

[0010] By adopting the above technical solution, in use, the first and second heat exchange units of the dual-cycle heat exchange assembly are connected in series and in parallel through pipes. The heat exchange device and the parallel pipes form a switchable flow path, which can flexibly adjust the flow path of the refrigerant and improve the heat exchange efficiency and adaptability of the system.

[0011] Preferably, the first heat exchange unit is a plate heat exchanger, and the second heat exchange unit is a shell-and-tube heat exchanger, which are connected by a tee joint.

[0012] By adopting the above technical solution, plate heat exchangers and shell-and-tube heat exchangers are connected in series and connected by a tee joint, which can realize the heat exchange between refrigerant, chilled water, and domestic hot water.

[0013] Preferably, the heat exchange device includes an electric valve assembly, which switches the heat exchange mode of the dual-cycle heat exchange component by changing the flow path of the refrigerant.

[0014] By adopting the above technical solution, the refrigerant flow path can be flexibly changed using the electric valve group during use, and the heat exchange mode of the dual-cycle heat exchange component can be switched automatically and dynamically to meet the cooling and heating needs under different operating conditions.

[0015] Preferably, the maintenance channel includes at least two independent maintenance ports, which are spaced apart along the axial or radial direction of the dual-circulation heat exchange assembly.

[0016] By adopting the above technical solution, during use, the maintenance channel includes at least two independent maintenance ports that are spaced apart along the axial or radial direction of the dual-circuit heat exchange component, which facilitates the maintenance of the internal parts of the dual-circuit heat exchange component and reduces the impact of scaling or blockage caused by the multi-loop design of water / oil circuits on the system.

[0017] Preferably, the inspection port is provided with a removable cover and an annular sealing ring. The removable cover is connected to the outer wall of the dual-circulation heat exchange assembly through a flange, and the annular sealing ring is embedded between the contact surfaces of the flange and the removable cover.

[0018] By adopting the above technical solution, a removable cover and an annular sealing ring are installed at the inspection port during use. The removable cover is connected to the outer wall of the dual-circulation heat exchange component through a flange, and the annular sealing ring is embedded between the contact surface of the flange and the outer wall. This ensures the sealing of the connection while facilitating the inspection and maintenance of the internal parts of the dual-circulation heat exchange component.

[0019] Preferably, a flow regulating valve is provided on the connecting pipeline between the first heat exchange unit and the second heat exchange unit, and the flow regulating valve is linked to the switching state of the heat exchange device.

[0020] By adopting the above technical solution, during use, a flow regulating valve is installed on the connecting pipeline between the first heat exchange unit and the second heat exchange unit, and is linked to the switching state of the heat exchange device for control. The flow rate between the first heat exchange unit and the second heat exchange unit can be dynamically adjusted according to the heat exchange state.

[0021] Preferably, it also includes a temperature detection module, which includes temperature sensors disposed at the inlet and outlet of the dual-circulation heat exchange component.

[0022] By adopting the above technical solution, during use, the temperature detection module can dynamically or automatically detect the temperature of the liquid entering and exiting the dual-circulation heat exchange component through temperature sensors installed at the liquid inlet and outlet of the dual-circulation heat exchange component.

[0023] In summary, this application has the following beneficial effects:

[0024] 1. This utility model designs an industrial dynamic heat recovery and utilization control system, in which a dual-circulation heat exchange component is used for heat exchange between refrigerant, chilled water, and domestic hot water, to meet the simultaneous cooling and heating needs of factories and enterprises, and to make rational use of energy;

[0025] 2. The present invention relates to an industrial dynamic heat recovery and utilization control system, wherein the cold and heat conversion device can switch the flow path direction of the refrigerant in the dual-cycle heat exchange component to achieve dynamic adjustment, and change the heat exchange mode in real time according to the actual cold and heat demand to avoid energy waste.

[0026] 3. The industrial dynamic heat recovery and utilization control system designed in this utility model has a maintenance channel that runs through the outer wall of the dual-circulation heat exchange component and connects to its internal cavity, which facilitates the maintenance of the system and solves the problems of scaling or blockage and high maintenance difficulty in multi-loop design. Attached Figure Description

[0027] Figure 1 Flowchart for an embodiment;

[0028] Figure 2 This is a schematic diagram showing the structure of the maintenance passage in the embodiment;

[0029] Figure 3 This is a schematic diagram showing the removable cap in the embodiment;

[0030] Explanation of reference numerals in the attached drawings: 1. Dual-circulation heat exchange assembly; 11. First heat exchange unit; 12. Second heat exchange unit; 2. Heat conversion device; 21. Electric valve group; 3. Maintenance passage; 31. Maintenance port; 4. Removable cover; 5. Annular sealing ring; 6. Flow regulating valve; 7. Temperature detection module; 71. Temperature sensor. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," "lower," "bottom," and "top" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0032] This utility model discloses an industrial dynamic heat recovery and utilization control system, such as Figures 1 to 3 As shown, the system includes a dual-circulation heat exchange assembly 1, a heat exchanger 2, and a maintenance channel 3. The dual-circulation heat exchange assembly 1 is used for heat exchange between refrigerant and chilled water / domestic hot water. The heat exchanger 2 is connected between the refrigerant input and output ends of the dual-circulation heat exchange assembly 1 and can switch the flow path direction of the refrigerant within the dual-circulation heat exchange assembly 1. The maintenance channel 3 penetrates the outer wall of the dual-circulation heat exchange assembly 1 and connects to its internal cavity. This not only realizes the function of heat recovery but also facilitates the maintenance of the dual-circulation heat exchange assembly 1, avoiding the impact of scaling or blockage on the normal operation of the system.

[0033] Specifically, the dual-circulation heat exchange assembly 1 includes a first heat exchange unit 11 and a second heat exchange unit 12 arranged in series, and the first heat exchange unit 11 and the second heat exchange unit 12 are connected in parallel through pipes. The first heat exchange unit 11 can be a plate heat exchanger, which features high heat transfer efficiency and compact structure. It is composed of many corrugated metal plates stacked at certain intervals and sealed with gaskets. The plate material is usually stainless steel, titanium alloy, etc., and different materials can be selected according to the specific application environment and medium. In addition to plate heat exchangers, the first heat exchange unit 11 can also be a spiral plate heat exchanger, which has the advantages of being less prone to scaling and able to withstand higher pressures. The second heat exchange unit 12 is a shell-and-tube heat exchanger, which consists of a shell, tube bundle, tube sheet, baffles, etc. The refrigerant flows inside the tubes, and chilled water or domestic hot water flows in the shell side to achieve heat exchange. The materials of shell-and-tube heat exchangers are generally carbon steel, copper, etc. The first heat exchange unit 11 and the second heat exchange unit 12 are connected by a T-joint. The T-joint can realize the diversion and convergence of the pipeline, ensuring the flow of refrigerant between the two heat exchange units.

[0034] The combination of the first heat exchange unit 11 and the second heat exchange unit 12 allows the refrigerant to flow along different paths within the two units, thus achieving different heat exchange modes. When more cooling is needed, the refrigerant can flow more through the first heat exchange unit 11; when more heating is needed, the refrigerant flow can be adjusted to allow it to pass more through the second heat exchange unit 12. This design can be flexibly adjusted according to actual cooling and heating demands, improving energy efficiency.

[0035] Specifically, the heat exchange device 2 includes an electric valve assembly 21, which switches the heat exchange mode of the dual-cycle heat exchange component 1 by changing the flow path of the refrigerant. The electric valve assembly 21 generally consists of multiple electric regulating valves, which can precisely adjust the valve opening according to control signals. The valve cores of the electric regulating valves come in different shapes, such as butterfly and ball, and can be selected according to specific flow regulation requirements. The electric valve assembly 21 can also be replaced by a solenoid valve assembly, which has a fast response speed and can achieve rapid on / off control. The electric valve assembly 21 and the parallel pipeline form a switchable flow path. By controlling the opening and closing state of the electric valves, the flow direction of the refrigerant within the dual-cycle heat exchange component 1 can be changed, thereby achieving the switching of the heat exchange mode.

[0036] This control method of the electric valve assembly 21 enables dynamic adjustment of the heat exchange process. When the system detects an increase in process cooling demand, the electric valve assembly 21 can adjust the refrigerant flow direction, directing more refrigerant to the heat exchange path used for producing chilled water; when the demand for domestic hot water increases, it can guide the refrigerant to a path that generates more heat, thus avoiding energy waste.

[0037] Specifically, the maintenance passage 3 includes at least two independent maintenance ports 31, which are spaced apart axially or radially along the dual-cycle heat exchange assembly 1. The maintenance ports 31 are typically circular or square. Circular maintenance ports 31 distribute stress evenly, while square maintenance ports 31 may be more convenient for installing and maintaining certain special equipment. Each maintenance port 31 is equipped with a removable cover 4 and an annular sealing ring 5. The removable cover 4 is connected to the outer wall of the dual-cycle heat exchange assembly 1 via a flange. The flange is generally made of carbon steel or stainless steel, providing good strength and corrosion resistance. The annular sealing ring 5 is embedded between the contact surfaces of the flange and the removable cover 4, serving a sealing function to prevent refrigerant leakage. The annular sealing ring 5 can be made of rubber, silicone, etc., with different materials suitable for different temperature and pressure environments.

[0038] The multiple inspection ports 31 facilitate the inspection and maintenance of different parts inside the dual-circulation heat exchange assembly 1. When scale or blockage occurs in a certain part, the corresponding inspection port 31 can be opened for cleaning without disassembling the entire dual-circulation heat exchange assembly 1, which greatly improves the efficiency of maintenance.

[0039] Furthermore, a flow regulating valve 6 is installed on the connecting pipe between the first heat exchange unit 11 and the second heat exchange unit 12. The flow regulating valve 6 is linked to the switching state of the heat exchange conversion device 2. The flow regulating valve 6 can automatically adjust the refrigerant flow distribution between the two heat exchange units according to the switching state of the electric valve group 21. The flow regulating valve 6 can be a throttling valve, which controls the flow by changing the throttling cross-section or throttling length. It can also be a speed regulating valve, which can ensure stable flow when the load changes.

[0040] The temperature detection module 7 includes temperature sensors 71 installed at the inlet and outlet of the dual-circulation heat exchange assembly 1. The temperature sensors 71 can monitor the temperature of the refrigerant, chilled water, and domestic hot water in real time. The temperature sensors 71 can be thermocouples or resistance temperature detectors (RTDs), with thermocouples suitable for high-temperature measurements and RTDs offering higher accuracy. By monitoring the temperature, the system can dynamically adjust according to the actual temperature conditions using the electric valve assembly 21 and flow regulating valve 6, achieving dynamic control of heat recovery.

[0041] The implementation principle of this embodiment is as follows: This embodiment achieves heat exchange between refrigerant, chilled water, and domestic hot water through the dual-circulation heat exchange component 1, satisfying the simultaneous cooling and heating needs. The cooling-heating conversion device 2 can switch the flow path direction of the refrigerant according to the actual cooling and heating needs, realizing dynamic adjustment of the heat exchange mode and improving energy utilization efficiency. The setting of the maintenance channel 3 facilitates the maintenance of the dual-circulation heat exchange component 1, avoiding system failures caused by scaling or blockage. The setting of the flow regulating valve 6 and the temperature detection module 7 further improves the automation level and operational stability of the system. Compared with the traditional method of separately configuring energy, it is more energy-efficient and efficient, solving the problems of energy waste and maintenance difficulties in the prior art.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An industrial dynamic heat recovery and utilization control system, characterized in that: It includes a dual-circulation heat exchange component (1), a heat exchanger (2), and a maintenance channel (3). The dual-circulation heat exchange component (1) is used for heat exchange between refrigerant and chilled water and domestic hot water. The heat exchanger (2) is connected between the refrigerant input end and the output end of the dual-circulation heat exchange component (1) and is used to switch the flow path direction of the refrigerant in the dual-circulation heat exchange component (1). The maintenance channel (3) penetrates the outer wall of the dual-circulation heat exchange component (1) and connects to its internal cavity.

2. The industrial dynamic heat recovery and utilization control system according to claim 1, characterized in that: The dual-circulation heat exchange assembly (1) includes a first heat exchange unit (11) and a second heat exchange unit (12). The first heat exchange unit (11) and the second heat exchange unit (12) are connected in parallel through a pipe. The heat exchange device (2) and the pipe form a switchable flow path.

3. The industrial dynamic heat recovery and utilization control system according to claim 2, characterized in that: The first heat exchange unit (11) is a plate heat exchanger, and the second heat exchange unit (12) is a shell and tube heat exchanger. The two are connected by a tee joint.

4. The industrial dynamic heat recovery and utilization control system according to claim 1, characterized in that: The heat exchange device (2) includes an electric valve group (21), which switches the heat exchange mode of the dual-cycle heat exchange component (1) by changing the flow path of the refrigerant.

5. The industrial dynamic heat recovery and utilization control system according to claim 1, characterized in that: The maintenance channel (3) includes at least two independent maintenance ports (31), which are spaced apart along the axial or radial direction of the dual-circulation heat exchange assembly (1).

6. The industrial dynamic heat recovery and utilization control system according to claim 5, characterized in that: The inspection port (31) is provided with a removable cover (4) and an annular sealing ring (5). The removable cover (4) is connected to the outer wall of the dual-circulation heat exchange assembly (1) through a flange. The annular sealing ring (5) is embedded between the contact surface of the flange and the removable cover (4).

7. An industrial dynamic heat recovery and utilization control system according to claim 2, characterized in that: A flow regulating valve (6) is provided on the connecting pipeline between the first heat exchange unit (11) and the second heat exchange unit (12). The flow regulating valve (6) is linked to the switching state of the heat exchange device (2).

8. The industrial dynamic heat recovery and utilization control system according to claim 1, characterized in that: It also includes a temperature detection module (7), which includes temperature sensors (71) installed at the inlet and outlet of the dual-circulation heat exchange assembly (1).

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