CN112503663A - Double-power heat pipe system and control method - Google Patents
Double-power heat pipe system and control method Download PDFInfo
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- CN112503663A CN112503663A CN202011401236.8A CN202011401236A CN112503663A CN 112503663 A CN112503663 A CN 112503663A CN 202011401236 A CN202011401236 A CN 202011401236A CN 112503663 A CN112503663 A CN 112503663A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/025—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes having non-capillary condensate return means
Abstract
The invention discloses a double-power heat pipe system and a control method, wherein the traditional heat pipe air conditioner operation system is single, although a scheme of one use and one standby is adopted, the single operation system can not meet the requirement of heat exchange, the double-power heat pipe system provided by the invention is a double-power heat pipe system combining gravity and electric power, and double-power mutual switching is realized through the on-off operation of each branch pipeline; when one of the power goes wrong, the power can be switched in time, one power with one power is really used and the other power with one power, and hot spots are avoided from occurring locally in a machine room or the overall temperature is high, so that the operation efficiency and reliability of the device are greatly improved, and the operation efficiency of the whole unit is improved. In the double-power system provided by the invention, the gravity system and the electric power system can operate independently, and each system operates independently without mutual interference, so that the energy-saving requirement can be greatly improved.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a double-power heat pipe system and a control method, which are suitable for the field of machine room air conditioners and any field of annual refrigeration.
Background
The increasingly strong energy conservation and emission reduction and green environmental protection requirements in the world place higher requirements on the energy consumption and cold quantity requirements of data centers in the IT industry; the reliability and stability of energy conservation and refrigeration system operation have become a primary appeal to industry owners and design builders.
The heat pipe system is adopted in the field of machine room air conditioners at present in a single-power circulation operation mode, although a one-use one-standby mode is adopted, the use condition cannot be met by single power all the time, or the phenomenon that the heat pipe is not started during operation may cause the temperature of a machine room to be higher and damage equipment of the machine room.
Disclosure of Invention
In order to solve the technical problems, the invention provides a dual-power heat pipe system and a control method for solving the problems, the dual-power (gravity and electric power) operation mode adopted by the invention can avoid the defect of single-power mode operation, greatly improve the utilization mode of a heat pipe air conditioner, improve the reliability of the whole unit and solve the defect that the existing heat pipe air conditioner is utilized in a data center.
The invention is realized by the following technical scheme:
a double-power heat pipe system comprises a heat pipe evaporator, a water cooling plate exchanger I, a water cooling plate exchanger II, a refrigerant pump, a plate exchange water inlet pipe and a plate exchange water outlet pipe; the heat pipe evaporator is provided with a refrigeration exhaust main pipe and a refrigeration liquid inlet main pipe; the input end of the refrigeration exhaust main pipe is connected with the heat pipe evaporator, the output end of the refrigeration exhaust main pipe is provided with an exhaust branch pipe I and an exhaust branch pipe II, the output end of the exhaust branch pipe I is connected to the heat source input end of the water cooling plate exchanger I, and the output end of the exhaust branch pipe II is connected to the heat source input end of the water cooling plate exchanger II; the output end of the refrigeration liquid inlet header pipe is connected to the heat pipe evaporator, and the input end of the refrigeration liquid inlet header pipe is connected with a liquid inlet branch pipe I and a liquid inlet branch pipe II; the input end of the plate exchange water inlet pipe is used for connecting a cooling water source, and the output end of the plate exchange water inlet pipe is provided with a water inlet branch pipe I and a water inlet branch pipe II; the output end of the plate exchange water outlet pipe is used for discharging cooling water after heat exchange, the input end of the plate exchange water outlet pipe is provided with a water outlet branch pipe I and a water outlet branch pipe II, the input end of the water outlet branch pipe I is connected to the water cooling output end of the water cooling plate exchange I, and the input end of the water outlet branch pipe II is connected to the water cooling output end of the water cooling plate exchange II; the installation height of the water cooling plate exchanger I is greater than that of the heat pipe evaporator, and the liquid refrigerant after heat exchange in the water cooling plate exchanger I returns to the heat pipe evaporator along the liquid inlet branch pipe I and the refrigeration liquid inlet header pipe under the action of gravity; and a refrigerant pump is also arranged on the liquid inlet branch pipe II.
The heat pipe system is adopted in the field of machine room air conditioners at present in a single-power circulation operation mode, although a one-use one-standby mode is adopted, the use condition cannot be met by single power all the time, or the phenomenon that the heat pipe is not started during operation may cause the temperature of a machine room to be higher and damage equipment of the machine room.
Based on the technical background, the invention provides a dual-power heat pipe system, which combines gravity and electric power, realizes dual-power mutual switching by on-off operation of branch pipelines, and has simple structure and lower cost; when one of the power (gravity or electric power) goes wrong, the power can be switched in time, one power with different power is used for the other power, and hot spots or high overall temperature of a machine room are avoided, so that the operation efficiency and reliability of the device are greatly improved, and the operation efficiency of the whole unit is improved. In the double-power system provided by the invention, the gravity system and the electric power system can operate independently, and each system operates independently without mutual interference, so that the energy-saving requirement can be greatly improved.
Preferably, the exhaust branch pipe I is provided with a solenoid valve I, and the exhaust branch pipe II is provided with a solenoid valve iv.
Through set up different solenoid valves respectively on exhaust branch pipe I and exhaust branch pipe II to the realization is through the break-make of valve direct control inlet branch pipe I and inlet branch pipe II, conveniently controls in gaseous refrigerant flows into corresponding driving system, makes things convenient for double dynamical system fast switch over more.
Preferably, the branched water inlet pipe I is provided with an electromagnetic valve V, and the branched water inlet pipe II is provided with an electromagnetic valve III; and the water outlet branch pipe I is provided with a solenoid valve VI, and the water outlet branch pipe II is provided with a solenoid valve II.
Through set up the solenoid valve respectively on inlet branch pipe I and inlet branch pipe II, accessible valve direct control selects the cooling water to get into gravity system's water-cooling board and trades I or get into electric dynamic system's water-cooling board and trade II in, make things convenient for dual-power system fast switch over more.
Further preferably, an electric two-way valve is further arranged on the plate exchange water outlet pipe.
The invention preferably arranges an electric two-way valve on the plate exchange water outlet pipe, and the opening degree of the electric two-way valve is regulated according to the PID or P requirement of the temperature of the refrigerant outlet.
Preferably, a check valve is arranged on the liquid inlet branch pipe II and on a pipe section located at the downstream of the refrigerant pump, and is used for preventing the cooled coolant from flowing back to the refrigerant pump.
The liquid refrigerant after heat exchange and cooling by the water cooling plate II enters the liquid inlet branch pipe II under the action of the refrigerant pump, and preferably, a one-way valve is arranged on the liquid inlet branch pipe II and a pipe section positioned at the downstream of the refrigerant pump so as to prevent the cooled refrigerant from flowing back to the refrigerant pump.
Preferably, a liquid storage tank is arranged on the liquid inlet branch pipe II and on a pipe section positioned between the water cooling plate II and the refrigerant pump; in the vertical direction, the height of the installation position of the liquid storage tank is less than the installation height of the water cooling plate II and greater than the installation height of the refrigerant pump.
In order to avoid that the high-temperature refrigerant gas cannot be fully cooled and liquefied in the process of replacing the water cooling plate, and the refrigerant pump cannot work due to the fact that the refrigerant gas enters the inlet of the refrigerant pump, a liquid storage tank is arranged between the water cooling plate II and the refrigerant pump, then the liquid storage tank is arranged below the water cooling plate, and the refrigerant pump is arranged above the refrigerant pump and provides sufficient liquefied refrigerant for the refrigerant pump, so that the pump can run efficiently.
Further preferably, a needle valve I is arranged on the refrigeration exhaust main pipe; and the refrigeration liquid inlet main pipe is provided with a needle valve II and a liquid sight glass.
Needle valves are arranged on the refrigeration exhaust main pipe and the refrigeration inlet main pipe to control the on-off of the refrigeration exhaust main pipe or the refrigeration inlet main pipe and the flow of fluid circulating in the refrigeration exhaust main pipe or the refrigeration inlet main pipe.
Further preferably, the water cooling plate II is located indoors.
The double-power heat pipe system provided by the invention can be used for replacing II by connecting a water cooling plate at the indoor side and replacing I by connecting the water cooling plate at the outdoor side, and has strong flexibility; the use occasions are not really used, and the compatibility of the whole unit is improved. When the single gravity heat pipe system operation mode is adopted, the temperature is low in winter, the water flow plate exchange I is generally placed outdoors, frost cracking of the plate exchange can be caused, and the problem can be solved by adopting the water flow plate exchange II of a power (provided by a refrigerant pump) system in the unit at the moment, so that the condition that the temperature is high in a machine room is prevented.
A double-power heat pipe control method is realized by adopting the double-power heat pipe system, and comprises the following steps:
step A: conducting a refrigeration exhaust main pipe, an exhaust branch pipe I, a liquid inlet branch pipe I and a refrigeration liquid inlet main pipe; the conduction plate is replaced by a water inlet pipe, a water inlet branch pipe I, a water outlet branch pipe I and a water outlet pipe; closing the exhaust branch pipe II, the liquid inlet branch pipe II, the water inlet branch pipe II and the water outlet branch pipe II; the working state of the gravity system heat pipe is started.
And B: conducting a refrigeration exhaust main pipe, an exhaust branch pipe II, a liquid inlet branch pipe II and a refrigeration liquid inlet main pipe; the conduction plate is replaced by a water inlet pipe, a water inlet branch pipe II, a water outlet branch pipe II and a water outlet pipe; closing the exhaust branch pipe I, the liquid inlet branch pipe I, the water inlet branch pipe I and the water outlet branch pipe II; the working state of the heat pipe of the starting force system is realized.
Further preferably, the dual-power heat pipe control method comprises the following steps:
in the state of using the gravity system heat pipe: the refrigerant absorbs heat in the heat pipe evaporator and changes from liquid state to gas state, the gas refrigerant floats upwards sequentially through the refrigeration exhaust main pipe and the exhaust branch pipe I and enters the pipe pass of the water cooling plate heat exchange I to exchange heat, the gas refrigerant changes into liquid state, and the liquid refrigerant returns to the heat pipe evaporator sequentially through the liquid inlet branch pipe I and the refrigeration liquid inlet main pipe under the action of gravity; meanwhile, cooling water sequentially enters a shell pass of the water cooling plate exchanger I through the plate exchange water inlet pipe and the water inlet branch pipe I, and after heat exchange is carried out between the cooling water and a refrigerant, the cooling water is sequentially discharged through the water outlet branch pipe I and the plate exchange water outlet pipe;
in the state of using the heat pipe of the power system: the refrigerant absorbs heat in the heat pipe evaporator and changes from liquid state to gas state, the gas refrigerant flows through the refrigeration exhaust main pipe and the exhaust branch pipe II in sequence and enters the pipe pass of the water cooling plate heat exchange II to exchange heat, the gas refrigerant changes into liquid state, and the liquid refrigerant returns to the heat pipe evaporator through the liquid inlet branch pipe II and the refrigeration liquid inlet main pipe in sequence under the action of the refrigerant pump; meanwhile, cooling water enters a shell pass of the water cooling plate exchange II through the plate exchange water inlet pipe and the water inlet branch pipe II in sequence, and after heat exchange is carried out between the cooling water and a refrigerant, the cooling water is discharged through the water outlet branch pipe II and the plate exchange water outlet pipe in sequence.
The invention has the following advantages and beneficial effects:
1. the invention provides a double-power heat pipe system, which is a double-power heat pipe system combining gravity and electric power, and can be switched in time when one power (gravity or electric power) is in problem, thereby really using one power for another and avoiding hot spots in local parts of a machine room or higher overall temperature, greatly improving the operation efficiency and reliability of the device and improving the operation efficiency of an overall unit. In the double-power system provided by the invention, the gravity system and the electric power system can operate independently, and each system operates independently without mutual interference, so that the energy-saving requirement can be greatly improved.
2. The double-power heat pipe system provided by the invention can be used for replacing II by connecting a water cooling plate at the indoor side and replacing I by connecting the water cooling plate at the outdoor side, and has strong flexibility; the use occasions are not really used, and the compatibility of the whole unit is improved. A sheet is used.
3. The data center with reliability, compatibility, high efficiency and energy conservation is a great inevitable trend of the development of the data center industry in the future, and the continuous and effective reduction of the operation cost of the data center is urgent. Therefore, the application of the dual-power heat pipe system and the control method provided by the invention is very important for the whole energy consumption of the IT machine room system.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a dual-power heat pipe system according to the present invention.
Reference numbers and corresponding part names in the drawings: 1-a fan, 2-a heat pipe evaporator, 3-a needle valve I, 4-a needle valve II, 5-a liquid sight glass, 6-a water cooling plate I, 7-an electromagnetic valve I, 8-an electric two-way valve, 9-a plate water inlet pipe, 10-a plate water outlet pipe, 11-an electromagnetic valve II, 12-an electromagnetic valve III, 13-a water cooling plate II, 14-a refrigerant pump, 15-a one-way valve, 16-an electromagnetic valve IV, 17-an electromagnetic valve V and 18-an electromagnetic valve VI.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
The embodiment provides a dual-power heat pipe system, which comprises a heat pipe evaporator 2, a fan 1, a water-cooling plate exchange I6, a water-cooling plate exchange II13, a refrigerant pump 14, a plate exchange water inlet pipe 9 and a plate exchange water outlet pipe 10; the fan 1 is used for radiating the heat pipe evaporator 2, and the heat pipe evaporator 2 and the fan 1 are both installed indoors.
The heat pipe evaporator 2 is provided with a refrigeration exhaust main pipe and a refrigeration inlet main pipe; the input end of the refrigeration exhaust main pipe is connected with the heat pipe evaporator 2, the output end of the refrigeration exhaust main pipe is provided with an exhaust branch pipe I and an exhaust branch pipe II, the output end of the exhaust branch pipe I is connected to the heat source input end of the water-cooling plate exchanger I6, and the output end of the exhaust branch pipe II is connected to the heat source input end of the water-cooling plate exchanger II 13; the output end of the refrigeration liquid inlet header pipe is connected to the heat pipe evaporator 2, the input end of the refrigeration liquid inlet header pipe is connected with a liquid inlet branch pipe I and a liquid inlet branch pipe II, the input end of the liquid inlet branch pipe I and the water cooling plate are used for exchanging the heat source output end of I6, and the input end of the liquid inlet branch pipe II and the water cooling plate are used for exchanging the heat source output end of II 13; .
The input end of the plate-replacing water inlet pipe 9 is used for connecting a cooling water source, the output end of the plate-replacing water inlet pipe is provided with a water inlet branch pipe I and a water inlet branch pipe II, the output end of the water inlet branch pipe I is connected to the water-cooling input end of the water-cooling plate replacing I6, and the output end of the water inlet branch pipe II is connected to the water-cooling input end of the water-cooling plate replacing II 13; the output that the water pipe 10 was traded to the board is used for discharging cooling water after the heat transfer, the input is equipped with out water bleeder I and goes out water bleeder II, and the input of going out water bleeder I is connected to the water-cooling plate and trades the water-cooling output that I6, and the input of going out water bleeder II is connected to the water-cooling plate and trades the water-cooling output that II 13.
The installation height of the water cooling plate exchanger I6 is greater than that of the heat pipe evaporator 2, and the liquid refrigerant after heat exchange in the water cooling plate exchanger I6 returns to the heat pipe evaporator 2 along the liquid inlet branch pipe I and the refrigeration liquid inlet header pipe under the action of gravity; the liquid inlet branch pipe II is also provided with a refrigerant pump 14.
Example 2
The refrigeration system is further improved on the basis of the embodiment 1, and a needle valve I3 is arranged on a refrigeration exhaust main pipe; the needle valve II4 and the liquid sight glass 5 are arranged on the refrigeration liquid inlet header pipe; the exhaust branch pipe I is provided with an electromagnetic valve I7, and the exhaust branch pipe II is provided with an electromagnetic valve IV 16; the water inlet branch pipe I is provided with an electromagnetic valve V17, and the water inlet branch pipe II is provided with an electromagnetic valve III 12; the water outlet branch pipe I is provided with an electromagnetic valve VI 18, and the water outlet branch pipe II is provided with an electromagnetic valve II 11; an electric two-way valve 8 is also arranged on the plate exchange water outlet pipe 10.
A one-way valve 15 is arranged on the pipe section of the liquid inlet branch pipe II and positioned at the downstream of the refrigerant pump 14 and used for preventing the cooled refrigerant from flowing back to the refrigerant pump 14; a liquid storage tank is arranged on the pipe section on the liquid inlet branch pipe II and between the water cooling plate II13 and the refrigerant pump 14; in the vertical direction, the height of the installation position of the liquid storage tank is smaller than the installation height of the water cooling plate II13 and larger than the installation height of the refrigerant pump 14, so as to protect the refrigerant pump 14.
Further preferably, the water cooling plate II 6 is designed to be installed outdoors, and the water cooling plate II13 is designed to be installed indoors.
Example 3
The embodiment provides a dual-power heat pipe control method, which is implemented by using the dual-power heat pipe system provided in embodiment 2, and the specific steps are as follows:
step A: conducting a refrigeration exhaust main pipe, an exhaust branch pipe I, a liquid inlet branch pipe I and a refrigeration liquid inlet main pipe; the conduction plate is replaced by a water inlet pipe 9, a water inlet branch pipe I, a water outlet branch pipe I and a plate replacement water outlet pipe 10; closing the exhaust branch pipe II, the liquid inlet branch pipe II, the water inlet branch pipe II and the water outlet branch pipe II; the working state of the gravity system heat pipe is started.
And B: conducting a refrigeration exhaust main pipe, an exhaust branch pipe II, a liquid inlet branch pipe II and a refrigeration liquid inlet main pipe; the conduction plate is replaced by a water inlet pipe 9, a water inlet branch pipe II, a water outlet branch pipe II and a plate replacement water outlet pipe 10; closing the exhaust branch pipe I, the liquid inlet branch pipe I, the water inlet branch pipe I and the water outlet branch pipe II; the working state of the heat pipe of the starting force system is realized.
When the gravity system is used, the gravity system can be used as a main operation mode and the power system can be used as a standby operation mode according to actual use requirements, or the power system can be used as the main operation mode and the gravity system can be used as the standby operation mode.
The following is a specific description taking the preferential use of a gravity system as an example:
1. heat pipe mode for preferential use of gravity system
Opening the electromagnetic valve I7, the electromagnetic valve V17 and the electromagnetic valve VI 18, and closing the electromagnetic valve II11, the electromagnetic valve III12 and the electromagnetic valve IV 16 at the same time, so as to realize the conduction of the refrigeration exhaust main pipe, the exhaust branch pipe I, the liquid inlet branch pipe I and the refrigeration liquid inlet main pipe; the conduction plate is replaced by a water inlet pipe 9, a water inlet branch pipe I, a water outlet branch pipe I and a plate replacement water outlet pipe 10; and closing the exhaust branch pipe II, the liquid inlet branch pipe II, the water inlet branch pipe II and the water outlet branch pipe II'.
And (3) starting the indoor EC fan 1, starting a water inlet circulating water pump to ensure that cooling water sequentially enters the water cooling plate exchange I6 through the plate exchange water inlet pipe 9 and the water inlet branch pipe I, and is discharged through the water outlet branch pipe I and the plate exchange water outlet pipe 10.
Then the refrigerant absorbs heat in the indoor heat pipe evaporator 2 and changes from liquid state to gas state, due to the density difference of the gas-liquid refrigerant, the gas refrigerant floats upwards sequentially through the refrigeration exhaust main pipe and the exhaust branch pipe I and enters the pipe pass of the water cooling plate heat exchange I6 for heat exchange, the high-temperature refrigerant absorbs the cold energy of low-temperature cooling water, reduces the temperature of the refrigerant, changes the high-temperature refrigerant gas into low-temperature refrigerant liquid, the low-temperature liquid refrigerant returns to the heat pipe evaporator 2 sequentially through the liquid inlet branch pipe I and the refrigeration liquid inlet main pipe under the action of gravity, and then the circulation is repeated to complete the circulation work; meanwhile, cooling water enters the shell pass of the water cooling plate exchange I6 through the plate exchange water inlet pipe 9 and the water inlet branch pipe I in sequence, and after heat exchange is carried out between the cooling water and a refrigerant, the cooling water is discharged through the water outlet branch pipe I and the plate exchange water outlet pipe 10 in sequence.
The liquid viewing mirror 5 is arranged on the refrigeration liquid inlet main pipe and is used for observing the liquid of the refrigerant, the rotating speed of the fan 1 in the EC room is regulated according to the PID or P requirement (the technology is a known technology in the industry) of the indoor return air temperature or the indoor air supply temperature, and the opening degree of the electric two-way valve 8 is regulated according to the PID or P requirement of the temperature of the refrigerant outlet.
2. When the temperature difference of the returned air of the unit is detected, specifically, if the temperature difference of the returned air required is 12 ℃, but the actual temperature difference of the returned air is basically 0 ℃, the refrigerant does not flow in the heat pipe system in the gravity mode, the unit does not generate refrigerating capacity, and the gravity heat pipe system generates a fault that the unit cannot refrigerate; starting a standby power system heat pipe mode to provide cold energy for the machine room; the working principle of the heat pipe mode of the power system is as follows
Closing the solenoid valve I7, the solenoid valve V17 and the solenoid valve VI 18, and simultaneously opening the solenoid valve II11, the solenoid valve III12 and the solenoid valve IV 16 to realize the conduction of the refrigeration exhaust main pipe, the exhaust branch pipe II, the liquid inlet branch pipe II and the refrigeration liquid inlet main pipe; the conduction plate is replaced by a water inlet pipe 9, a water inlet branch pipe II, a water outlet branch pipe II and a plate replacement water outlet pipe 10; and closing the exhaust branch pipe I, the liquid inlet branch pipe I, the water inlet branch pipe I and the water outlet branch pipe II'.
The indoor EC fan 1 is turned on,
and starting a water inlet circulating water pump to ensure that cooling water sequentially enters the water cooling plate exchange II13 through the plate exchange water inlet pipe 9 and the water inlet branch pipe II and is discharged through the water outlet branch pipe II and the plate exchange water outlet pipe 10.
The refrigerant absorbs heat in the heat pipe evaporator 2 and changes from liquid state to gas state, the gas refrigerant flows through the refrigeration exhaust main pipe and the exhaust branch pipe II in sequence and enters the pipe pass of the water cooling plate heat exchange II13 for heat exchange, the high-temperature gas refrigerant absorbs the cold energy of low-temperature cooling water, the temperature of the refrigerant is reduced, high-temperature refrigerant gas is changed into low-temperature refrigerant liquid, the liquid refrigerant returns to the heat pipe evaporator 2 through the liquid inlet branch pipe II and the refrigeration liquid inlet main pipe in sequence under the action of the refrigerant pump 14, and the liquid refrigerant circulates and works in a reciprocating mode in sequence; meanwhile, cooling water enters the shell pass of the water cooling plate exchange II13 through the plate exchange water inlet pipe 9 and the water inlet branch pipe II in sequence, and after heat exchange is carried out between the cooling water and the refrigerant, the cooling water is discharged through the water outlet branch pipe II and the plate exchange water outlet pipe 10 in sequence.
When the refrigerant pump 14 starts to operate, the electric two-way valve 8 needs to be fully opened to provide enough chilled water flow for the water cooling plate exchanger II13, so that the problem that the refrigerant pump 14 cannot work due to the fact that high-temperature refrigerant gas cannot be cooled and liquefied in the water cooling plate exchanger II13 and enters the refrigerant gas at the inlet of the refrigerant pump 14 is avoided; in addition, a liquid storage tank can be arranged on the liquid inlet branch pipe II between the water cooling plate II13 and the refrigerant pump 14, and then the liquid storage tank is arranged below the water cooling plate II13 and above the refrigerant pump 14, so that enough refrigerant in a liquefied state is provided for the refrigerant pump 14, and the refrigerant pump 14 can operate efficiently.
3. During the standby power system heat pipe mode operation, when the refrigerant pump 14 fails to operate or "dies" occurs, the operation is switched to the gravity system heat pipe mode.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A double-power heat pipe system comprises a heat pipe evaporator (2) and is characterized by also comprising a water-cooling plate exchanger I (6), a water-cooling plate exchanger II (13), a refrigerant pump (14), a plate-exchanging water inlet pipe (9) and a plate-exchanging water outlet pipe (10);
the heat pipe evaporator (2) is provided with a refrigeration exhaust main pipe and a refrigeration inlet main pipe; the input end of the refrigeration exhaust main pipe is connected with the heat pipe evaporator (2), the output end of the refrigeration exhaust main pipe is provided with an exhaust branch pipe I and an exhaust branch pipe II, the output end of the exhaust branch pipe I is connected to the heat source input end of the water cooling plate exchanger I (6), and the output end of the exhaust branch pipe II is connected to the heat source input end of the water cooling plate exchanger II (13); the output end of the refrigeration liquid inlet header pipe is connected to the heat pipe evaporator (2), the input end of the refrigeration liquid inlet header pipe is connected with a liquid inlet branch pipe I and a liquid inlet branch pipe II, the input end of the liquid inlet branch pipe I and the water cooling plate exchange the heat source output end of the I (6), and the input end of the liquid inlet branch pipe II and the water cooling plate exchange the heat source output end of the II (13);
the input end of the plate exchanger water inlet pipe (9) is used for connecting a cooling water source, and the output end of the plate exchanger water inlet pipe is provided with a water inlet branch pipe I and a water inlet branch pipe II; the output end of the plate exchange water outlet pipe (10) is used for discharging cooling water after heat exchange, and the input end of the plate exchange water outlet pipe is provided with a water outlet branch pipe I and a water outlet branch pipe II, the input end of the water outlet branch pipe I is connected to the water cooling output end of the water cooling plate exchange I (6), and the input end of the water outlet branch pipe II is connected to the water cooling output end of the water cooling plate exchange II (13);
the installation height of the water cooling plate exchanger I (6) is greater than that of the heat pipe evaporator (2), and the liquid refrigerant after heat exchange in the water cooling plate exchanger I (6) returns to the heat pipe evaporator (2) along the liquid inlet branch pipe I and the refrigeration liquid inlet header pipe under the action of gravity; and a refrigerant pump (14) is also arranged on the liquid inlet branch pipe II.
2. The dual-power heat pipe system as claimed in claim 1, wherein the exhaust branch pipe I is provided with a solenoid valve I (7), and the exhaust branch pipe II is provided with a solenoid valve iv (16).
3. The dual-power heat pipe system as claimed in claim 1, wherein the branched water inlet pipe I is provided with a solenoid valve v (17), and the branched water inlet pipe II is provided with a solenoid valve III (12); and the water outlet branch pipe I is provided with a solenoid valve VI (18), and the water outlet branch pipe II is provided with a solenoid valve II (11).
4. The hybrid heat pipe system as claimed in claim 1, wherein an electric two-way valve (8) is further disposed on the plate exchange water pipe (10).
5. The hybrid heat pipe system of claim 1, wherein a check valve (15) is disposed on the pipe section of the inlet branch pipe II downstream of the refrigerant pump (14) for preventing the cooled refrigerant from flowing back to the refrigerant pump (14).
6. The dual-power heat pipe system as claimed in claim 1, wherein a liquid storage tank is arranged on a pipe section on the liquid inlet branch pipe II and between the water cooling plate II (13) and the refrigerant pump (14); in the vertical direction, the height of the installation position of the liquid storage tank is less than the installation height of the water cooling plate II (13) and greater than the installation height of the refrigerant pump (14).
7. The dual-power heat pipe system as claimed in claim 1, wherein the cooling exhaust manifold is provided with a needle valve I (3); and the refrigeration liquid inlet header pipe is provided with a needle valve II (4) and a liquid viewing mirror (5).
8. The hybrid heat pipe system according to any one of claims 1 to 7, wherein the water-cooled plate exchanger I (6) is located outdoors and the water-cooled plate exchanger II (13) is located indoors.
9. A dual-power heat pipe control method is realized by the dual-power heat pipe system of any one of claims 1 to 8, and is characterized by comprising the following steps:
step A: conducting a refrigeration exhaust main pipe, an exhaust branch pipe I, a liquid inlet branch pipe I and a refrigeration liquid inlet main pipe; the conduction plate is replaced by a water inlet pipe (9), a water inlet branch pipe I, a water outlet branch pipe I and a plate replacement water outlet pipe (10); closing the exhaust branch pipe II, the liquid inlet branch pipe II, the water inlet branch pipe II and the water outlet branch pipe II; the working state of the gravity system heat pipe is started.
And B: conducting a refrigeration exhaust main pipe, an exhaust branch pipe II, a liquid inlet branch pipe II and a refrigeration liquid inlet main pipe; the conduction plate is replaced by a water inlet pipe (9), a water inlet branch pipe II, a water outlet branch pipe II and a plate replacement water outlet pipe (10); closing the exhaust branch pipe I, the liquid inlet branch pipe I, the water inlet branch pipe I and the water outlet branch pipe II; the working state of the heat pipe of the starting force system is realized.
10. The dual-power heat pipe control method of claim 9, comprising the steps of:
in the state of using the gravity system heat pipe: the refrigerant absorbs heat in the heat pipe evaporator (2) and changes from liquid state to gas state, the gas refrigerant floats upwards sequentially through the refrigeration exhaust main pipe and the exhaust branch pipe I and enters the pipe pass of the water cooling plate heat exchange I (6) for heat exchange, the gas refrigerant changes into liquid state, and the liquid refrigerant returns to the heat pipe evaporator (2) sequentially through the liquid inlet branch pipe I and the refrigeration liquid inlet main pipe under the action of gravity; meanwhile, cooling water enters a shell side of the water cooling plate exchanger I (6) through the plate exchanger water inlet pipe (9) and the water inlet branch pipe I in sequence, and after heat exchange is carried out between the cooling water and a refrigerant, the cooling water is discharged through the water outlet branch pipe I and the plate exchanger water outlet pipe (10) in sequence;
in the state of using the heat pipe of the power system: the refrigerant absorbs heat in the heat pipe evaporator (2) and changes from liquid state to gas state, the gas refrigerant flows through the refrigeration exhaust main pipe and the exhaust branch pipe II in sequence and enters the pipe pass of the water cooling plate heat exchange II (13) for heat exchange, the gas refrigerant changes into liquid state, and the liquid refrigerant returns to the heat pipe evaporator (2) through the liquid inlet branch pipe II and the refrigeration liquid inlet main pipe in sequence under the action of the refrigerant pump (14); meanwhile, cooling water enters a shell side of the water cooling plate exchanger II (13) through the plate exchanger water inlet pipe (9) and the water inlet branch pipe II in sequence, and after heat exchange is carried out between the cooling water and a refrigerant, the cooling water is discharged through the water outlet branch pipe II and the plate exchanger water outlet pipe (10) in sequence.
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Application publication date: 20210316 |