Total heat recovery water chilling unit control system

By adjusting the operating frequency of the cooling water pump in the full heat recovery chiller system, the energy waste problem caused by bypass valve control in traditional systems is solved, and more efficient heat recovery and heating reliability is achieved.

CN222279458UActive Publication Date: 2024-12-31SHANGHAI TANSUO ENERGY ENVIRONMENTAL SERVICES CO LTD
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Patent Information

Application Number
CN202420230959.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-30
Publication Date
2024-12-31
Estimated Expiration
2034-01-30

AI Technical Summary

Technical Problem

Traditional fully heat recovery chiller controls the water supply temperature by setting up a bypass valve, which leads to energy waste.

Method used

Using a system including condenser, heat recovery device, cooling water pump, cooling tower, temperature sensor and control component, the water supply temperature of the heat recovery component is adjusted by adjusting the operating frequency of the cooling water pump, and the bypass pipeline at the inlet of the cooling water pump is cancelled. , adjust the operating status of the cooling water pump in real time according to the heat load needs.

Benefits of technology

It effectively reduces energy waste, reduces system complexity and cost, while improving heating reliability and reducing energy losses caused by internal circulation of cooling water.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model provides a total heat recovery water chilling unit control system which is characterized in that the total heat recovery water chilling unit control system comprises a total heat recovery unit which comprises a condenser and a heat recoverer connected with the condenser; the cooling water assembly comprises a cooling water pump, cooling water, a cooling tower, a cooling water supply pipe and a cooling water return pipe, and the two ends of the cooling water supply pipe and the two ends of the cooling water return pipe are connected into the cooling tower and the condenser respectively; the heat recovery assembly comprises heat recovery water, a heat recovery water supply pipe and a heat recovery water return pipe; the first temperature sensor is used for acquiring the temperature of heat recovery water of the heat recovery water supply pipe; a bypass pipeline at the inlet of the cooling water pump is omitted, the operation frequency of the cooling water pump is regulated and controlled according to the water supply temperature of the heat recovery assembly, and the problem that energy is wasted due to the fact that a total heat recovery type water chilling unit in the prior art controls the water supply temperature through a bypass valve is solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of heat energy recovery, in particular to a full heat recovery chiller control system. Background Art

[0002] With the increasing awareness of environmental protection in society, the application of full heat recovery chillers in social production is becoming more and more extensive. Full heat recovery chillers are a kind of high-efficiency refrigeration equipment that can recover waste heat for hot water production while refrigerating. The working principle of full heat recovery chillers is to use the heat release characteristics of high-temperature and high-pressure refrigerant gas discharged by the compressor in the condenser. In conventional chillers, this part of heat is usually discharged into the environment, causing energy waste and environmental thermal pollution. The full heat recovery chiller transfers this part of heat to the heat recovery device through a specific heat recovery technology, which is used to heat water or other substances, thereby providing hot water for life or process, etc.; in addition, the full heat recovery chiller is widely used. It can be used in hotels, factories, hospitals and other places that require a lot of hot water, and is also suitable for laboratory environments that require precise temperature control. By using this unit, not only can energy consumption be reduced, but also operating costs can be reduced, and the impact on the environment is also smaller. In general, the full heat recovery chiller is an advanced refrigeration equipment that integrates energy saving, environmental protection and economy. It is more and more widely used in modern buildings and industries.

[0003] In the traditional full heat recovery chiller, when the system is running, the cooling water system and the heat recovery component are independently controlled. On the one hand, the cooling water pump controls the motor speed according to the temperature difference between the inlet and outlet water of the condenser; on the other hand, a bypass valve is set at the inlet side of the cooling water pump, and the bypass valve opening is controlled by the difference between the heat recovery device water supply temperature and the set value. This control method will cause the cooling water to circulate between the water pump and the chiller, resulting in energy waste, and it is also impossible to control the operating state of the cooling water pump according to the supply and return water temperature of the heat recovery component. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a full heat recovery chiller control system to solve the problem that the full heat recovery chiller in the prior art controls the water supply temperature by setting a bypass valve, thereby causing energy waste.

[0005] In order to solve the above technical problems, the utility model provides a full heat recovery chiller control system, which is characterized by comprising:

[0006] A full heat recovery unit, the full heat recovery unit comprising a condenser and a heat recovery device connected to the condenser;

[0007] A cooling water assembly, the cooling water assembly comprising a cooling water pump, cooling water, a cooling tower, a cooling water supply pipe and a cooling water return pipe, the two ends of the cooling water supply pipe and the cooling water return pipe are respectively connected to the cooling tower and the condenser, under the action of the cooling water pump, the cooling water flows out of the cooling tower through the cooling water supply pipe, passes through the condenser, and returns to the cooling tower through the cooling water return pipe after heat exchange;

[0008] A heat recovery component, the heat recovery component comprising heat recovery water, a heat recovery water supply pipe and a heat recovery water return pipe, the heat recovery water flows through the heat recovery device through the heat recovery water supply pipe, and then flows out through the heat recovery water return pipe after heat exchange;

[0009] A first temperature sensor is provided on the heat recovery water supply pipe to obtain the water temperature of the heat recovery water in the heat recovery water supply pipe.

[0010] As a more preferred embodiment, the full heat recovery chiller control system also includes a control component, which is electrically connected to the cooling water pump and a first temperature sensor; the water supply temperature of the heat recovery component measured by the first temperature sensor is transmitted to the control component through an electrical signal, and the control component compares the acquired water supply temperature of the heat recovery component with the set value of the system. When it is less than the set value, it means that the heat dissipation of the full heat recovery unit through the cooling tower is large, and the control component then reduces the operating frequency of the cooling water pump and reduces the cooling water flow rate delivered to the cooling tower until the water supply temperature of the heat recovery component rises to the set value; when it is greater than the set value, the terminal heat load is less and the heat dissipation on the cooling side needs to be increased, the control component increases the operating frequency of the cooling water pump, thereby increasing the cooling water flow rate delivered to the cooling tower until the water supply temperature of the heat recovery component drops to the set value; the control system spontaneously adjusts the operating frequency of the cooling water pump to achieve the effect of regulating the water supply temperature of the heat recovery component.

[0011] As a more preferred embodiment, the cooling water component also includes a second temperature sensor and a third temperature sensor, the second temperature sensor and the third temperature sensor are respectively arranged on the cooling water supply pipe and the cooling water return pipe, and the second temperature sensor and the third temperature sensor are electrically connected to the control component; when the heat recovery system is turned off, all the heat in the condenser of the full heat recovery unit is dissipated by the cooling tower, and the inlet and outlet water temperature difference on the condenser side is obtained according to the difference in temperature data obtained by the second temperature sensor and the third temperature sensor, and then the cooling water pump operation frequency can be controlled according to the inlet and outlet water temperature difference on the condenser side. Specifically, when the inlet and outlet water temperature difference on the condenser side is less than the set value, the cooling water pump operation frequency is reduced, and the cooling water flow rate delivered to the cooling tower is reduced, thereby reducing the heat dissipated from the cooling tower, and then the inlet and outlet water temperature difference on the condenser side is increased until it reaches the set value; when the inlet and outlet water temperature difference on the condenser side is greater than the set value, the cooling water pump operation frequency is increased, and the cooling water flow rate delivered to the cooling tower is increased, thereby increasing the heat dissipated from the cooling tower, and reducing the inlet and outlet water temperature difference on the condenser side until it reaches the set value.

[0012] As a more preferred embodiment, the cooling water component and the heat recovery component also include a plurality of pressure sensors, which are respectively arranged on the cooling water supply pipe, the cooling water return pipe, the heat recovery water supply pipe and the heat recovery water return pipe, and the pressure sensors are electrically connected to the control component. The pressure sensors are used to monitor the water pressure of the cooling water supply pipe, the cooling water return pipe, the heat recovery water supply pipe and the heat recovery water return pipe, so that when an abnormality occurs, it can be discovered and handled in time, thereby improving the safety and stability of the system.

[0013] As a more preferred embodiment, the total heat recovery unit further includes an evaporator.

[0014] As a more preferred manner, the heat recovery device, condenser and evaporator are connected in sequence through a heat exchange pipeline.

[0015] As a more preferred embodiment, the full heat recovery unit also includes a refrigerant, which flows through the heat recovery device, condenser and evaporator in sequence through the heat exchange pipeline and circulates, and the refrigerant is converted from gas to liquid in the heat recovery device and condenser, releasing heat and transferring the heat to the cooling water and heat recovery water in the cooling water supply pipe and the heat recovery water supply pipe; then the liquid refrigerant is transported to the evaporator through the heat exchange pipeline, absorbs heat and is converted from liquid to gas in the evaporator, and then is transported to the heat recovery device and condenser to complete a cycle. Repeating the above cycle can continuously supply heat to the heat recovery component and the cooling water component.

[0016] As a more preferred embodiment, the cooling water component and the heat recovery component also include a number of inspection valves, which are respectively arranged on the cooling water supply pipe, the cooling water return pipe, the heat recovery water supply pipe and the heat recovery water return pipe to facilitate the repair and maintenance of the corresponding cooling water supply pipe, the cooling water return pipe, the heat recovery water supply pipe and the heat recovery water return pipe.

[0017] As a more preferred manner, the cooling water pump is arranged on the cooling water supply pipe, thereby conveniently and quickly driving the cooling water to circulate in the cooling water supply pipe and the cooling water return pipe.

[0018] As a more preferred manner, the cooling water pump is arranged on the cooling water return pipe, thereby conveniently and quickly driving the cooling water to circulate in the cooling water supply pipe and the cooling water return pipe.

[0019] As described above, the full heat recovery chiller control system of the utility model has the following beneficial effects: when the heat recovery component of the utility model starts to work, the heat in the full heat recovery unit is first supplied to the heat recovery component. When the heat recovered by the heat recovery component is not enough to dissipate all the heat of the full heat recovery unit, the cooling water pump is used to transport the cooling water to the condenser through the cooling water supply pipe. After heat exchange, the heat of the cooling water after heat exchange is sent to the cooling tower through the cooling water return pipe to be dissipated. In this process, the operating frequency of the cooling water pump is determined according to the water supply temperature of the heat recovery component obtained by the first temperature sensor. When the water supply temperature of the heat recovery component is lower than the set value, the heat dissipation through the cooling tower is large, the operating frequency of the cooling water pump is reduced, and the cooling water flow rate delivered to the cooling tower is reduced until the water supply temperature of the heat recovery component rises to the set value; when When the water supply temperature of the heat recovery component is greater than the set value, the terminal heat load is less, the heat dissipation on the cooling side is increased, the operating frequency of the cooling water pump is increased, and the cooling water flow rate delivered to the cooling tower is increased until the water supply temperature of the heat recovery component drops to the set value; compared with the traditional scheme, this scheme cancels the bypass pipeline at the inlet of the cooling water pump, the system is simple, easy to implement and reduces the cost; at the same time, this scheme can adjust the operating state of the cooling water pump in real time according to the demand on the heat load side, improve the heating reliability, and reduce the energy loss caused by the internal circulation of cooling water; in summary, the full heat recovery chiller control system of the utility model cancels the bypass pipeline at the inlet of the cooling water pump and adjusts the operating frequency of the cooling water pump according to the water supply temperature of the heat recovery component, thereby solving the problem of energy waste caused by the full heat recovery chiller in the prior art controlling the water supply temperature by setting a bypass valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Shown is a schematic diagram of a full heat recovery chiller control system of the present invention.

[0021] Component number description

[0022] 1 Full heat recovery unit

[0023] 101 Condenser

[0024] 102 Heat recovery device

[0025] 103 Evaporator

[0026] 2 Cooling water pump

[0027] 3 Cooling tower

[0028] 4 Cooling water supply pipe

[0029] 5 Cooling water return pipe

[0030] 6 Heat recovery water supply pipe

[0031] 7 Heat recovery water return pipe

[0032] 8 First temperature sensor

[0033] 9 Second temperature sensor

[0034] 10 Third temperature sensor

[0035] 11. Pressure sensor

[0036] 12. Maintenance valve DETAILED DESCRIPTION

[0037] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0038] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in this utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that can be produced by the utility model and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terms used here are only for describing specific embodiments and are not intended to limit this application. Spatial related terms, such as "upper", "lower", "left", "right", "below", "below", "lower", "above", "upper", etc., can be used in the text to facilitate the description of the relationship between an element or feature shown in the figure and another element or feature.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "hold" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless there is an indication to the contrary in the context. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Exceptions to this definition will only occur when the combination of elements, functions or operations is inherently mutually exclusive in some way.

[0041] As shown in the figure, the utility model provides a full heat recovery chiller control system, which is characterized by comprising:

[0042] A total heat recovery unit 1, wherein the total heat recovery unit 1 comprises a condenser 101 and a heat recovery device 102 connected to the condenser 101;

[0043] A cooling water assembly, the cooling water assembly comprising a cooling water pump 2, cooling water, a cooling tower 3, a cooling water supply pipe 4 and a cooling water return pipe 5. The two ends of the cooling water supply pipe 4 and the cooling water return pipe 5 are respectively connected to the cooling tower 3 and the condenser 101. Under the action of the cooling water pump 2, the cooling water flows out of the cooling tower 3 through the cooling water supply pipe 4 and passes through the condenser 101. After heat exchange, the cooling water returns to the cooling tower 3 through the cooling water return pipe 5;

[0044] A heat recovery component, the heat recovery component includes heat recovery water, a heat recovery water supply pipe 6 and a heat recovery water return pipe 7. The heat recovery water flows through the heat recovery device 102 through the heat recovery water supply pipe 6, and then flows out through the heat recovery water return pipe 7 after heat exchange;

[0045] The first temperature sensor 8 is arranged on the heat recovery water supply pipe 6 to obtain the water temperature of the heat recovery water in the heat recovery water supply pipe 6 .

[0046] In order to better introduce the full heat recovery chiller control system of the utility model, it is now further explained in combination with the following specific applications: when the heat recovery component of the utility model starts to work, the heat in the full heat recovery unit 1 is first supplied to the heat recovery component. When the heat recovered by the heat recovery component is not enough to dissipate all the heat of the full heat recovery unit 1, the cooling water pump 2 is used to transport the cooling water to the condenser 101 through the cooling water supply pipe 4. After heat exchange, the heat of the cooling water after heat exchange is sent to the cooling tower 3 through the cooling water return pipe 5 to be dissipated. In this process, the operating frequency of the cooling water pump 2 is determined according to the water supply temperature of the heat recovery component obtained by the first temperature sensor 8. When the water supply temperature of the heat recovery component is lower than the set When the temperature is set, the heat dissipation through the cooling tower 3 is large, the operating frequency of the cooling water pump 2 is reduced, and the cooling water flow rate delivered to the cooling tower 3 is reduced until the water supply temperature of the heat recovery component rises to the set value; when the water supply temperature of the heat recovery component is greater than the set value, the terminal heat load is less, the heat dissipation on the cooling side is increased, the operating frequency of the cooling water pump 2 is increased, and the cooling water flow rate delivered to the cooling tower 3 is increased until the water supply temperature of the heat recovery component drops to the set value; compared with the traditional scheme, this scheme cancels the bypass pipeline at the inlet of the cooling water pump 2, the system is simple, easy to implement and reduces the cost; at the same time, this scheme can adjust the operating status of the cooling water pump 2 in real time according to the demand on the heat load side, improve the heat supply reliability, and reduce the energy loss caused by the internal circulation of the cooling water.

[0047] As a more preferred mode, the full heat recovery chiller control system also includes a control component, which is electrically connected to the cooling water pump 2 and the first temperature sensor 8; the water supply temperature of the heat recovery component measured by the first temperature sensor 8 is transmitted to the control component through an electrical signal, and the control component compares the acquired water supply temperature of the heat recovery component with the set value of the system. When it is less than the set value, it means that the heat dissipation of the full heat recovery unit 1 through the cooling tower 3 is large, and the control component then reduces the operating frequency of the cooling water pump 2, and reduces the cooling water flow rate delivered to the cooling tower 3 until the water supply temperature of the heat recovery component rises to the set value; when it is greater than the set value, the terminal heat load is less, and the heat dissipation on the cooling side needs to be increased, and the control component increases the operating frequency of the cooling water pump 2, thereby increasing the cooling water flow rate delivered to the cooling tower 3, until the water supply temperature of the heat recovery component drops to the set value; the control system spontaneously adjusts the operating frequency of the cooling water pump 2 to achieve the effect of regulating the water supply temperature of the heat recovery component.

[0048] As a more preferred method, the cooling water component also includes a second temperature sensor 9 and a third temperature sensor 10, the second temperature sensor 9 and the third temperature sensor 10 are respectively arranged on the cooling water supply pipe 4 and the cooling water return pipe 5, and the second temperature sensor 9 and the third temperature sensor 10 are electrically connected to the control component; when the heat recovery system is turned off, all the heat in the condenser 101 of the full heat recovery unit 1 is dissipated by the cooling tower 3, and the inlet and outlet water temperature difference on the condenser 101 side is obtained according to the difference in temperature data obtained by the second temperature sensor 9 and the third temperature sensor 10, and then The operating frequency of the cooling water pump 2 can be controlled according to the inlet and outlet water temperature difference on the condenser 101 side. Specifically, when the inlet and outlet water temperature difference on the condenser 101 side is less than the set value, the operating frequency of the cooling water pump 2 is reduced, and the cooling water flow rate delivered to the cooling tower 3 is reduced, thereby reducing the heat dissipated from the cooling tower 3, and then increasing the inlet and outlet water temperature difference on the condenser 101 side until it reaches the set value; when the inlet and outlet water temperature difference on the condenser 101 side is greater than the set value, the operating frequency of the cooling water pump 2 is increased, and the cooling water flow rate delivered to the cooling tower 3 is increased, thereby increasing the heat dissipated from the cooling tower 3, and reducing the inlet and outlet water temperature difference on the condenser 101 side until it reaches the set value.

[0049] As a more preferred embodiment, the cooling water component and the heat recovery component also include a plurality of pressure sensors 11, and the pressure sensors 11 are respectively arranged on the cooling water supply pipe 4, the cooling water return pipe 5, the heat recovery water supply pipe 6 and the heat recovery water return pipe 7, and the pressure sensors 11 are electrically connected to the control component. The pressure sensors 11 are used to monitor the water pressure of the cooling water supply pipe 4, the cooling water return pipe 5, the heat recovery water supply pipe 6 and the heat recovery water return pipe 7, so that when an abnormality occurs, it can be discovered and handled in time, thereby improving the safety and stability of the system.

[0050] As a more preferred embodiment, the total heat recovery unit 1 further includes an evaporator 103 .

[0051] As a more preferred manner, the heat recovery device 102, the condenser 101 and the evaporator 103 are connected in sequence through a heat exchange pipeline.

[0052] As a more preferred embodiment, the full heat recovery unit 1 also includes a refrigerant, which flows through the heat recovery device 102, the condenser 101 and the evaporator 103 in sequence through the heat exchange pipeline and circulates. The refrigerant is converted from a gaseous state to a liquid state in the heat recovery device 102 and the condenser 101, releasing heat and transferring the heat to the cooling water and heat recovery water in the cooling water supply pipe 4 and the heat recovery water supply pipe 6; then the liquid refrigerant is transported to the evaporator 103 through the heat exchange pipeline, absorbs heat and is converted from a liquid state to a gaseous state in the evaporator 103, and then is transported to the heat recovery device 102 and the condenser 101 to complete a cycle. Repeating the above cycle can continuously supply heat to the heat recovery component and the cooling water component.

[0053] As a more preferred embodiment, the cooling water component and the heat recovery component also include a number of inspection valves 12, which are respectively arranged on the cooling water supply pipe 4, the cooling water return pipe 5, the heat recovery water supply pipe 6 and the heat recovery water return pipe 7, for facilitating the repair and maintenance of the corresponding cooling water supply pipe 4, the cooling water return pipe 5, the heat recovery water supply pipe 6 and the heat recovery water return pipe 7.

[0054] As a more preferred manner, the cooling water pump 2 is arranged on the cooling water supply pipe 4, thereby conveniently and quickly driving the cooling water to circulate in the cooling water supply pipe 4 and the cooling water return pipe 5.

[0055] As a more preferred manner, the cooling water pump 2 is arranged on the cooling water return pipe 5 , thereby conveniently and quickly driving the cooling water to circulate in the cooling water supply pipe 4 and the cooling water return pipe 5 .

[0056] In this embodiment, the first temperature sensor 8, the second temperature sensor 9 and the third temperature sensor 10 can be divided into contact type and non-contact type; specifically, one or more of the following types can be used: thermal resistor type: this type of sensor measures temperature by the property that the resistance of the material changes with temperature; thermocouple type: based on the Seebeck effect, two different metal materials or semiconductor materials will generate electromotive force voltage at different temperatures. Thermocouples are widely used in high temperature measurement occasions; radiation temperature measuring instruments: this type of sensor does not need to be in direct contact with the object being measured. They measure the temperature by receiving infrared radiation emitted by the object, and are suitable for temperature measurement of high-temperature objects that cannot be directly contacted; digital temperature sensor: converts temperature information into digital signal output for easy reading and processing. Digital temperature sensors usually integrate analog-to-digital conversion functions and can be directly interfaced with microprocessors or computer systems; logic output temperature sensors: provide switch outputs, trigger corresponding logic signals when the preset temperature threshold is reached, and are often used for temperature monitoring in control systems. According to these sensors, appropriate temperature sensors can be selected according to different working principles and characteristics, as well as measurement range, accuracy, response time, application environment and other factors.

[0057] As described above, the full heat recovery chiller control system of the utility model has the following beneficial effects: when the heat recovery component of the utility model starts to work, the heat in the full heat recovery unit 1 is first supplied to the heat recovery component. When the heat recovered by the heat recovery component is not enough to dissipate all the heat of the full heat recovery unit 1, the cooling water pump 2 is used to transport the cooling water to the condenser 101 through the cooling water supply pipe 4. After heat exchange, the heat of the cooling water after heat exchange is sent to the cooling tower 3 through the cooling water return pipe 5 to be dissipated. In this process, the operating frequency of the cooling water pump 2 is determined according to the water supply temperature of the heat recovery component obtained by the first temperature sensor 8. When the water supply temperature of the heat recovery component is lower than the set value, the cooling water pump 2 is turned on. The heat dissipation of the supercooling tower 3 is large, so the operating frequency of the cooling water pump 2 is reduced, and the cooling water flow rate delivered to the cooling tower 3 is reduced until the water supply temperature of the heat recovery component rises to the set value; when the water supply temperature of the heat recovery component is greater than the set value, the terminal heat load is less, the heat dissipation on the cooling side is increased, the operating frequency of the cooling water pump 2 is increased, and the cooling water flow rate delivered to the cooling tower 3 is increased until the water supply temperature of the heat recovery component drops to the set value; compared with the traditional scheme, this scheme cancels the bypass pipeline at the inlet of the cooling water pump 2, the system is simple, easy to implement and reduces the cost; at the same time, this scheme can adjust the operating status of the cooling water pump 2 in real time according to the demand on the heat load side, improve the heat supply reliability, and reduce the energy loss caused by the internal circulation of the cooling water.

[0058] In summary, the full heat recovery chiller control system of the utility model eliminates the bypass pipeline at the inlet of the cooling water pump 2 and adjusts the operating frequency of the cooling water pump 2 according to the water supply temperature of the heat recovery component, thereby solving the problem of energy waste caused by the full heat recovery chiller in the prior art controlling the water supply temperature by setting a bypass valve. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0059] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A full heat recovery chiller control system, characterized in that: include: A total heat recovery unit (1), the total heat recovery unit (1) comprising a condenser (101) and a heat recovery device (102) connected to the condenser (101); A cooling water component, the cooling water component comprising a cooling water pump (2), cooling water, a cooling tower (3), a cooling water supply pipe (4) and a cooling water return pipe (5), the two ends of the cooling water supply pipe (4) and the cooling water return pipe (5) being respectively connected to the cooling tower (3) and the condenser (101), under the action of the cooling water pump (2), the cooling water flows out of the cooling tower (3) through the cooling water supply pipe (4), passes through the condenser (101), and after heat exchange, returns to the cooling tower (3) through the cooling water return pipe (5); A heat recovery component, the heat recovery component comprising heat recovery water, a heat recovery water supply pipe (6) and a heat recovery water return pipe (7), the heat recovery water flows through the heat recovery device (102) through the heat recovery water supply pipe (6), and flows out through the heat recovery water return pipe (7) after heat exchange; A first temperature sensor (8), the first temperature sensor is arranged on the heat recovery water supply pipe (6) and is used to obtain the water temperature of the heat recovery water in the heat recovery water supply pipe (6).

2. The full heat recovery chiller control system according to claim 1, characterized in that: The full heat recovery chiller control system also includes a control component, which is electrically connected to the cooling water pump (2) and the first temperature sensor (8).

3. The full heat recovery chiller control system according to claim 2 is characterized in that: The cooling water component also includes a second temperature sensor (9) and a third temperature sensor (10), the second temperature sensor (9) and the third temperature sensor (10) are respectively arranged on the cooling water supply pipe (4) and the cooling water return pipe (5), and the second temperature sensor (9) and the third temperature sensor (10) are electrically connected to the control component.

4. The full heat recovery chiller control system according to claim 2 is characterized in that: The cooling water component and the heat recovery component also include a plurality of pressure sensors (11), and the pressure sensors (11) are respectively arranged on the cooling water supply pipe (4), the cooling water return pipe (5), the heat recovery water supply pipe (6) and the heat recovery water return pipe (7), and the pressure sensors (11) are all electrically connected to the control component.

5. The full heat recovery chiller control system according to claim 1, characterized in that: The total heat recovery unit (1) also includes an evaporator (103).

6. The full heat recovery chiller control system according to claim 5, characterized in that: The heat recovery device (102), the condenser (101) and the evaporator (103) are connected in sequence via a heat exchange pipeline.

7. The full heat recovery chiller control system according to claim 6, characterized in that: The total heat recovery unit (1) also includes a refrigerant, which flows through the heat exchange pipeline in sequence through the heat recovery device (102), the condenser (101) and the evaporator (103) and circulates.

8. The full heat recovery chiller control system according to claim 1, characterized in that: The cooling water component and the heat recovery component also include a plurality of inspection valves (12), and the inspection valves (12) are respectively arranged on the cooling water supply pipe (4), the cooling water return pipe (5), the heat recovery water supply pipe (6) and the heat recovery water return pipe (7).

9. The full heat recovery chiller control system according to claim 1, characterized in that: The cooling water pump (2) is arranged on the cooling water supply pipe (4).

10. The full heat recovery chiller control system according to claim 1, characterized in that: The cooling water pump (2) is arranged on the cooling water return pipe (5).