CN220524722U - Cold accumulation device and control system thereof - Google Patents
Cold accumulation device and control system thereof Download PDFInfo
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- CN220524722U CN220524722U CN202320594637.2U CN202320594637U CN220524722U CN 220524722 U CN220524722 U CN 220524722U CN 202320594637 U CN202320594637 U CN 202320594637U CN 220524722 U CN220524722 U CN 220524722U
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- 238000009825 accumulation Methods 0.000 title claims abstract description 107
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 189
- 230000001105 regulatory effect Effects 0.000 claims abstract description 85
- 238000007599 discharging Methods 0.000 claims abstract description 28
- 238000004781 supercooling Methods 0.000 claims abstract description 5
- 238000012423 maintenance Methods 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 4
- 238000005057 refrigeration Methods 0.000 claims description 4
- 238000007710 freezing Methods 0.000 claims description 2
- 230000008014 freezing Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 22
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000004378 air conditioning Methods 0.000 description 13
- 239000000498 cooling water Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The application provides a cold accumulation device and a control system of the cold accumulation device, wherein the cold accumulation device comprises a water chilling unit (1), a heat exchanger (2), a chilled water pump (3), a cold accumulation tank (4), a chilled water return pipeline (8), a chilled water supply pipeline (9), and further comprises a first electric regulating valve (5), an electric switching valve (6) and a second electric regulating valve (7); the water chilling unit (1) is connected with the heat exchanger (2), the heat exchanger (2) is connected with the chilled water pump (3), the first electric regulating valve (5), the electric switching valve (6) and the second electric regulating valve (7) are respectively connected with the cold accumulation tank (4) and the chilled water pipeline (8); the cold accumulation device is switched to a cold charge and discharge mode through a first electric regulating valve (5), an electric switch valve (6) and a second electric regulating valve (7), and the cold charge and discharge mode comprises a normal operation mode, an emergency cold discharge mode and a super cold charge mode. The cold storage device is cooled without a special cold charging valve and a cold discharging pump, and when the system is cooled and cooled, the cold storage device controls the opening and closing of the electromagnetic valve to realize the operation mode conversion of cooling, cooling and super cooling.
Description
Technical Field
The embodiment of the application relates to the technical field of refrigeration cold accumulation, in particular to a cold accumulation device and a control system of the cold accumulation device.
Background
A data center is a place for providing an operating environment for electronic information equipment, and various IT devices such as data processing, data transmission, network communication and the like need to be installed in the data center. In order to ensure normal and effective operation of IT equipment and smooth operation of business, IT is also necessary to install related equipment such as power, air conditioner and transmission pipelines serving the IT equipment. The normal operation of the IT equipment of the data center not only needs the stable operation of the power supply system, the network system and other supporting facilities, but also depends on the uninterrupted and stable operation of the air conditioning system.
More than 95% of the power consumption of the IT equipment can be converted into sensible heat, once an air conditioning refrigerating system in a machine room is interrupted, the temperature of the IT equipment is rapidly increased due to the fact that heat cannot be discharged, the situation that the equipment is subjected to high-temperature alarm, performance reduction, protection shutdown and even direct downtime due to the fact that the heat dissipation efficiency is reduced is caused in a short time, and serious influence is caused on a service system. Therefore, to ensure proper operation of the data center IT equipment, data centers with high reliability requirements must have continuous cooling capabilities.
In the prior art, cold storage tank is used for storing chilled water of an air conditioning system, cold filling after deep cooling of the cold storage tank can lead to the destruction of an inclined temperature layer, on one hand, cold machine efficiency is reduced, on the other hand, cold storage time is increased, after the deep cooling of the cold storage tank is finished, all chilled water stored in the cold storage tank is released, high-temperature backwater is replaced completely, the high-temperature backwater in the cold storage tank enters a tail end precise air conditioner, control confusion of the tail end air conditioning system can be caused, temperature fluctuation in a machine room is caused, running safety of IT equipment in the machine room is influenced, and serious consequences can possibly be caused to the machine room.
Disclosure of Invention
In view of the foregoing, embodiments of the present application provide a cold accumulation device and a control system for the cold accumulation device to at least partially solve the above-mentioned problems.
According to a first aspect of the embodiment of the application, a cold accumulation device and a control system of the cold accumulation device are provided, wherein the cold accumulation device comprises a water chilling unit 1, a heat exchanger 2, a chilled water pump 3, a cold accumulation tank 4, a chilled water return pipeline 8, a chilled water supply pipeline 9, and further comprises a cold source BA automatic control system, a first electric regulating valve 5, an electric switching valve 6 and a second electric regulating valve 7;
the water chiller 1 is connected with the heat exchanger 2, the heat exchanger 2 is connected with the chilled water pump 3, the first electric regulating valve 5 and the electric switching valve 6 are respectively connected with the chilled water supply pipeline 9, and the second electric regulating valve 7 is connected with the chilled water return pipeline 8 and the chilled water supply pipeline 9;
the cold source BA autonomous system switches a cold charging and discharging mode of the cold accumulation device by controlling the first electric regulating valve 5, the electric switching valve 6 and the second electric regulating valve 7, wherein the cold charging and discharging mode comprises a normal running mode, an emergency cold discharging mode, a super cold charging mode and an off-line maintenance mode.
Optionally, the chilled water supply pipeline 9 includes a first chilled water supply pipeline and a second chilled water supply pipeline, the first chilled water supply pipeline is disposed between the water chiller 1 and the cold storage tank 4, the first electric regulating valve 5 is disposed between the first chilled water supply pipeline and the second chilled water supply pipeline, the cold storage tank 4 is disposed between the first chilled water supply pipeline and the second chilled water supply pipeline, the electric switch valve 6 is disposed in the first chilled water supply pipeline, and the second electric regulating valve 7 is disposed between the first chilled water supply pipeline and the chilled water return pipeline 8;
and the cold source BA automatic control system switches the cooling-charging and discharging modes according to the state of the water chilling unit, the water storage condition in the cold storage device and the temperature change in the cold storage device.
Optionally, when the cold accumulation device is in a normal running mode, the cold source BA automatic control system closes the first electric regulating valve 5, opens the electric switch valve 6, closes the second electric regulating valve 7, when the cold source BA automatic control system detects that the water chilling unit is normally started, the water outlet temperature reaches the set temperature, and when the water temperature in the cold accumulation device is higher than the set value, the first electric regulating valve 5 is opened and regulated, and the water inlet temperature of the tail-end precise air conditioner is ensured to be stably maintained at the preset temperature.
Optionally, when the cold accumulation device is in an off-line operation mode, the cold source BA automatic control system controls the first electric control valve 5 to be in an open state, the electric switch valve 6 to be in a closed state, and the second electric control valve 7 to be in a closed state;
when the cold accumulation device is switched to a cold discharging mode, the cold source BA automatic control system closes the first electric regulating valve 5, opens the electric switching valve 6 and closes the second electric regulating valve 7.
Optionally, when the cold accumulation device is in a normal running mode, the cold source BA automatic control system detects a cold water unit fault or stops working, the cold accumulation device is directly switched to a cold discharging mode, the first electric regulating valve 5 and the second electric regulating valve 7 are controlled to keep a closed state, and the electric switching valve 6 is controlled to keep an open state.
Optionally, when the cold storage device finishes cooling, the cold source BA automatic control system detects that high temperature backwater is stored in the cold storage device, and chilled water is not stored, the cold storage device is switched to a super-cooling mode, including opening the first electric regulating valve 5 and the second electric regulating valve 7, closing the electric switch valve 6, and adjusting the cold storage load by adjusting the opening of the second electric regulating valve 7;
the cold source BA automatic control system starts a standby refrigeration system and comprises a standby water chilling unit 1 and a standby chilled water pump 3, so that super rapid cold filling is realized.
Optionally, the cold accumulation device is further provided with a water inlet, a water outlet, a water inlet and a water outlet, and the lower part of the cold accumulation device is further provided with a water outlet, a pressure sensor, a temperature sensor and a control box.
Optionally, water flow distributors are further arranged at two ends of the cold accumulation device, and are used for stably introducing the air conditioner chilled water with different temperatures into the cold accumulation tank 4, and an inclined temperature layer is formed in the cold accumulation tank 4.
Optionally, the cold water machine set comprises a cold water machine set 1, a heat exchanger 2, a chilled water pump 3, a cold storage tank 4, a chilled water return pipeline 8, a chilled water supply pipeline 9, a cold source BA automatic control system, a first electric regulating valve 5, an electric switch valve 6 and a second electric regulating valve 7;
the water chiller 1 is connected with the heat exchanger 2, the heat exchanger 2 is connected with the chilled water pump 3, the first electric regulating valve 5 and the electric switching valve 6 are respectively connected with the chilled water supply pipeline 9, and the second electric regulating valve 7 is connected with the chilled water return pipeline 8 and the chilled water supply pipeline 9;
the cold source BA autonomous system switches a cold charging and discharging mode of the cold accumulation device through controlling the first electric regulating valve 5, the electric switching valve 6 and the second electric regulating valve 7, wherein the cold charging and discharging mode comprises a normal running mode, an emergency cold discharging mode, a super cold charging mode and an off-line maintenance mode.
Optionally, the cold source BA automatic control system switches the cold charging and discharging modes according to the state of the water chilling unit, the water storage condition in the cold storage device and the change of the temperature in the cold storage device.
According to the cold accumulation device provided by the embodiment of the application, the cold mode is filled and discharged through the first electric regulating valve, the electric switching valve and the second electric regulating valve which are arranged, the cold mode is filled and discharged and comprises a normal running mode, an emergency cold discharging mode and a super cold charging mode, the cold accumulation device is switched to be filled and discharged through the first electric regulating valve, the electric switching valve and the second electric regulating valve, the cold discharging of the cold accumulation device does not need a special cold charging valve and a cold discharging pump, the refrigerating water circulating pump of a water chilling unit is directly used, the system and the operation can be simplified, when the system is filled and discharged, the cold accumulation device controls the opening and closing of the electromagnetic valve to realize the running mode conversion of cold charging, cold discharging and super cold charging, and the temperature fluctuation of a machine room caused by that high-temperature backwater enters the tail end air conditioning system after the deep cold discharging of the cold accumulation device is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will briefly introduce the drawings that are required to be used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present application, and other drawings may also be obtained according to these drawings for a person having ordinary skill in the art.
Fig. 1 is a structural view of a cold storage device to which embodiments of the present application are applied;
Detailed Description
In order to better understand the technical solutions in the embodiments of the present application, the following descriptions will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the embodiments of the present application shall fall within the scope of protection of the embodiments of the present application.
Embodiments of the present application are further described below with reference to the accompanying drawings of embodiments of the present application.
Fig. 1 shows a structural view of a cold storage device to which an embodiment of the present application is applied.
As shown in fig. 1, the application provides a cold accumulation device and a control system of the cold accumulation device, wherein the cold accumulation device comprises a water chilling unit 1, a heat exchanger 2, a chilled water pump 3, a cold accumulation tank 4, a chilled water return pipeline 8, a chilled water supply pipeline 9, and further comprises a first electric regulating valve 5, an electric switching valve 6 and a second electric regulating valve 7;
the water chiller 1 is connected with the heat exchanger 2, the heat exchanger 2 is connected with the chilled water pump 3, the first electric regulating valve 5 and the electric switching valve 6 are respectively connected with the chilled water supply pipeline 9, and the second electric regulating valve 7 is connected with the chilled water return pipeline 8 and the chilled water supply pipeline 9;
the cold accumulation device is switched to a cold charge and discharge mode through a first electric regulating valve 5, an electric switch valve 6 and a second electric regulating valve 7, and the cold charge and discharge mode comprises a normal operation mode, an emergency cold discharge mode, a super cold charge mode and an off-line maintenance mode.
In this application embodiment, cold-storage device passes through first electronic governing valve, electronic switch valve, the cold mode of putting is filled in the switching of second electronic governing valve, cold-storage device's cooling of putting does not need dedicated cold valve and cold pump of putting, the freezing water circulating pump of direct use cooling water set, can simplify system and operation, when the system fills cold and puts cold, cold-storage device control electronic switch valve and the operation of electronic governing valve, just can realize filling cold, put cold, super cold and the operation mode conversion of off-line maintenance, make cold-storage device possess multiple operation mode, avoid cold-storage device to put cold after the end at the degree of depth, high temperature return water gets into terminal air conditioning system, and the computer lab temperature fluctuation that brings.
In one possible implementation, the cold storage device switches the charge-discharge mode according to the state of the water chiller, the water storage condition in the cold storage device and the change of the temperature in the cold storage device.
In this application embodiment, cold accumulation device switches according to the change of cooling water set state, the interior water storage condition of cold accumulation device and the interior temperature of cold accumulation device fills and puts cold mode, can avoid cold accumulation device to put cold the back in degree of depth, and high temperature return water gets into terminal air conditioning system, and the computer lab temperature fluctuation that brings.
In one possible implementation manner, when the cold accumulation device is in a normal running mode, the first electric regulating valve 5 is closed, the electric switch valve 6 is opened, the second electric regulating valve 7 is closed, when the system detects that the water chilling unit is normally started and the water outlet temperature reaches the set temperature, and when the water temperature in the cold accumulation device is higher than the set value, the first electric regulating valve 5 is opened and regulated, so that the water inlet temperature of the terminal precise air conditioner is ensured to be stably maintained at the preset temperature.
When the first electric regulating valve 5 is completely opened, the chilled water system bypasses the cold storage tank and directly supplies chilled water to the air conditioner at the tail end of the machine room, and the operation mode is generally that the cold storage tank is used when overhauling (the valve of the water inlet and outlet of the cold storage tank is required to be closed); when the first electric regulating valve 5 is completely closed, the cold accumulation tank is in a normal running mode, and is charged with cold in real time.
When the cold accumulation tank is in the normal running mode, after the system detects that the temperature of the cold accumulation tank rises, the BA automatic control system enables partial flow to charge the cold accumulation tank and partial flow to bypass through adjusting the opening of the first electric regulating valve 5, so that the water inlet temperature of the terminal precise air conditioner is ensured to be stably maintained under the design working condition.
In this application embodiment, cold-storage device is in normal operation mode, when the commercial power interruption or the cooling water set stop work appears, cold-storage device directly enters into the mode of putting cold, does not influence the inlet water temperature of terminal air conditioner completely, can guarantee that the temperature in the computer lab does not produce the fluctuation.
In one possible implementation, when the cold accumulation device is in the off-line operation mode, the first electric control valve 5 is in an open state, the electric switching valve 6 is in a closed state, and the second electric control valve 7 is in a closed state; when the cold storage device is switched to the cold storage mode, the first electric control valve 5 is closed, the electric switch valve 6 is opened, and the second electric control valve 7 is closed.
The switching time is about 30 seconds to 60 seconds.
In a possible implementation manner, when the cold accumulation device is in the normal running mode and the system detects the fault of the water chilling unit or stops working, the valve state is maintained as it is, the cold accumulation device directly enters the cold discharging mode, the first electric regulating valve 5 and the second electric regulating valve 7 are kept in a closed state, and the electric switching valve 6 is kept in an open state.
The normal running mode and the cooling mode do not need to adjust the valve state, and the cooling mode state can be directly entered from the normal running state, so that the stable water supply temperature of the air conditioner at the tail end of the machine room is ensured. The off-line state can be used for overhauling and maintaining the cold accumulation tank, and can also reduce the resistance of a chilled water system and reduce the power consumption of a water pump after long-term operation.
And recovering the cooling mode to the system power system, restarting the water chilling unit, recovering the cold accumulation tank to the common cooling mode after the cold accumulation device detects that the chilled water output by the water chilling unit is normal, and providing the chilled water to the tail end precise air conditioner by the water chilling unit and accumulating the cold for the cold accumulation tank.
In this application embodiment, when cold-storage device detects cooling water set trouble or stop work, through closing first electric control valve 5 and second electric control valve 7, full-open electric switch valve 6 switches cold-storage device to putting cold mode, can make the flow of chilled water circulating pump flow through cold-storage tank entirely, and cold-storage tank directly releases chilled water to the terminal.
In a possible implementation manner, when the cold accumulation device finishes cooling, the system detects that high-temperature backwater is stored in the cold accumulation device and chilled water is not stored in the cold accumulation device, the cold accumulation device is switched to a super-cooling mode, and the method comprises the steps of opening a first electric regulating valve 5 and a second electric regulating valve 7, closing the electric switching valve 6, and adjusting the cold accumulation load by adjusting the opening of the second electric regulating valve 7; and a standby refrigerating system is started, and the standby refrigerating system comprises a standby water chilling unit 1 and a standby chilled water pump 3, so that super rapid cooling is realized.
When deep cooling of the cold accumulation tank is finished, all the frozen water stored in the cold accumulation tank is released, and the frozen water is replaced by high-temperature backwater. This part of the high temperature backwater enters the terminal air conditioning system and can have serious consequences for the machine room. In order to solve the problem of the single-stage pump series closed cold accumulation tank after deep cooling is finished, a second electric regulating valve 7 is arranged in a pipe network, so that the cold accumulation tank has a super-cooling function. The first electric control valve 5 and the second electric control valve 7 are opened, and the electric switch valve 6 is closed. In order to accelerate the cooling speed, the standby refrigeration unit (comprising a water chiller and a water pump) can be started.
In this application embodiment, under super cold filling mode, can realize that the cold-storage jar is reverse to be filled cold, can avoid high temperature return water to get into terminal air conditioning system and cause serious result for the computer lab, super quick cold filling mode can shorten the cold time of filling 50% at maximum, has practiced thrift the cold time of filling greatly, and the cold of filling of cold-storage jar does not influence terminal air conditioning system's operation completely.
In one possible implementation, the cold storage device is further provided with a water inlet and outlet, a water inlet and an air outlet, and the lower part of the cold storage device is further provided with a water outlet, a pressure sensor, a temperature sensor and a control box.
In the embodiment of the application, through the arrangement, the cold accumulation device can be controlled and detected, so that the cold accumulation state of the cold accumulation device is monitored in real time.
In one possible implementation, the cold storage device is further provided with water flow distributors at both ends.
In this application embodiment, the rivers distributor arranges in the both ends of cold-storage jar, makes water flow or piston levelling flow into or draw forth the water pitcher steadily to make water layering in proper order according to the corresponding density difference of different temperatures, form and maintain a stable oblique temperature layer, in order to ensure the rivers evenly distributed in the basin, the disturbance is little.
The cold accumulation water tank utilizes an inclined temperature layer, adopts a layered cold accumulation technology, fully utilizes the temperature difference of water accumulation and outputs air conditioner chilled water with stable temperature. The cold accumulation tank takes water from the tank and sends water into the tank through a water flow distributor, and the water flow distributor can enable the water to slowly flow into and out of the cold accumulation tank so as to reduce turbulence and disturb the temperature rapid change layer as much as possible. When cold accumulation is carried out, the inclined temperature layer steadily descends along with the continuous feeding of cold water from the water inlet pipe into the water tank and the continuous extraction of hot water from the water outlet pipe, whereas when cold accumulation is carried out, the inclined temperature layer gradually ascends along with the continuous extraction of cold water from the lower part of the cold accumulation tank and the continuous inflow of hot water from the upper part of the tank.
In this application embodiment, cold-storage device both ends are equipped with rivers distributor, can make water flow or piston levelling flow into or draw forth the water pitcher steadily to make water layering in proper order according to the corresponding density difference of different temperatures, form and maintain a stable oblique temperature layer, in order to ensure the rivers evenly distributed in the basin, the disturbance is little.
In one possible implementation manner, the control device of the cold accumulation device and the control system of the cold accumulation device comprises a water chilling unit 1, a heat exchanger 2, a chilled water pump 3, a cold accumulation tank 4, a chilled water return pipeline 8, a chilled water supply pipeline 9, and further comprises a first electric regulating valve 5, an electric switching valve 6 and a second electric regulating valve 7;
the water chiller 1 is connected with a heat exchanger 2, the heat exchanger 2 is connected with a chilled water pump 3, and the first electric regulating valve 5, the electric switch valve 6 and the second electric regulating valve 7 are respectively connected with a cold accumulation tank 4, a chilled water return pipeline 8 and a chilled water supply pipeline 9.
The control device switches a charging and discharging cooling mode through the first electric regulating valve 5, the electric switching valve 6 and the second electric regulating valve 7, and the charging and discharging cooling mode comprises a normal running mode, an emergency discharging cooling mode, a super charging cooling mode and an off-line maintenance mode.
In this application embodiment, cold-storage device is through first electronic governing valve, electronic ooff valve, the cold mode of putting is filled in the switching of second electronic governing valve, can switch freely and fill and put cold mode, cold-storage device's cooling of putting does not need dedicated cold valve and cold pump of putting, the chilled water circulating pump of direct use cooling water unit, can simplify system and operation, when the system fills cold and puts cold, cold and super cold operation mode conversion that fills just can be realized filling to cold, putting cold and super cold of cold-storage device control solenoid valve, avoid cold-storage device to put after the cold end at the degree of depth, high temperature return water gets into terminal air conditioning system, and the computer lab temperature fluctuation that brings.
In one possible implementation, a cold storage device, a control device of a control system of the cold storage device, the control device switches a cold charging and discharging mode according to a state of a water chilling unit, a water storage condition in the cold storage device and a change of temperature in the cold storage device.
In this application embodiment, cold accumulation device switches according to the change of cooling water set state, the interior water storage condition of cold accumulation device and the interior temperature of cold accumulation device fills and puts cold mode, can avoid cold accumulation device to put cold the back in degree of depth, and high temperature return water gets into terminal air conditioning system, and the computer lab temperature fluctuation that brings.
Through the cold-storage device that this application embodiment provided, through the first electric control valve that sets up, electric switch valve, the cold mode of putting is filled in the switching of second electric control valve, it includes normal operating mode to fill the cold mode of putting, emergent cold mode and super cold mode of filling, cold-storage device is put cold mode through first electric control valve, electric switch valve, the switching of second electric control valve is filled, cold-storage device's cooling does not need dedicated cold valve and cold pump of putting, direct chilled water circulating pump that uses the cooling water unit, can simplify system and operation, when the system fills cold and puts cold, cold and super cold mode of operation conversion that fills just can be realized filling of cold-storage device control solenoid valve, avoid cold-storage device to put after cold in the degree of depth, high temperature return water gets into terminal air conditioning system, and the computer lab temperature fluctuation that brings.
The above embodiments are only for illustrating the embodiments of the present application, but not for limiting the embodiments of the present application, and various changes and modifications can be made by one skilled in the relevant art without departing from the spirit and scope of the embodiments of the present application, so that all equivalent technical solutions also fall within the scope of the embodiments of the present application, and the scope of the embodiments of the present application should be defined by the claims.
Claims (10)
1. The cold accumulation device comprises a water chilling unit (1), a heat exchanger (2), a chilled water pump (3), a cold accumulation tank (4), a chilled water return pipeline (8) and a chilled water supply pipeline (9), and is characterized by further comprising a cold source BA automatic control system, a first electric regulating valve (5), an electric switch valve (6) and a second electric regulating valve (7);
the water chiller (1) is connected with the heat exchanger (2), the heat exchanger (2) is connected with the chilled water pump (3), the first electric regulating valve (5) and the electric switching valve (6) are respectively connected with the chilled water supply pipeline (9), and the second electric regulating valve (7) is connected with the chilled water return pipeline (8) and the chilled water supply pipeline (9);
the cold source BA autonomous system switches a cold charge and discharge mode of the cold accumulation device through controlling the first electric regulating valve (5), the electric switch valve (6) and the second electric regulating valve (7), and the cold charge and discharge mode comprises a normal running mode, an emergency cold discharge mode, a super cold charge mode and an off-line maintenance mode.
2. The apparatus according to claim 1, wherein the chilled water supply pipe (9) comprises a first chilled water supply pipe and a second chilled water supply pipe, the first chilled water supply pipe being arranged between the chiller plant (1) and the cold storage tank (4), the first electrically operated control valve (5) being arranged between the first chilled water supply pipe and the second chilled water supply pipe, the cold storage tank (4) being arranged between the first chilled water supply pipe and the second chilled water supply pipe, the electrically operated switch valve (6) being arranged in the first chilled water supply pipe, the second electrically operated control valve (7) being arranged between the first chilled water supply pipe and the chilled water return pipe (8);
and the cold source BA automatic control system switches the cooling-charging and discharging modes according to the state of the water chilling unit, the water storage condition in the cold storage device and the temperature change in the cold storage device.
3. The device according to claim 1, wherein when the cold accumulation device is in a normal operation mode, the cold source BA automatic control system closes the first electric regulating valve (5), opens the electric switching valve (6), closes the second electric regulating valve (7), and when the cold source BA automatic control system detects that the cold water machine set is normally started and the water outlet temperature reaches a set temperature, and the water temperature in the cold accumulation device is higher than the set value, opens and regulates the first electric regulating valve (5), so as to ensure that the water inlet temperature of the terminal precision air conditioner is stably maintained at the preset temperature.
4. The device according to claim 1, characterized in that when the cold accumulation device is in an off-line operation mode, the cold source BA automatic control system controls the first electric regulating valve (5) to be in an open state, the electric switching valve (6) to be in a closed state, and the second electric regulating valve (7) to be in a closed state;
when the cold accumulation device is switched to a cold discharge mode, the cold source BA automatic control system closes the first electric regulating valve (5), opens the electric switching valve (6) and closes the second electric regulating valve (7).
5. The device according to claim 1, wherein when the cold accumulation device is in a normal operation mode, the cold source BA automatic control system detects a cold water unit fault or stops working, the cold accumulation device is directly switched to a cold discharging mode, the first electric regulating valve (5) and the second electric regulating valve (7) are controlled to be kept in a closed state, and the electric switching valve (6) is kept in an open state.
6. The device according to claim 1, wherein when the cold accumulation device finishes discharging cold, the cold source BA automatic control system detects that high-temperature backwater is stored in the cold accumulation device, and when chilled water is not stored, the cold accumulation device is switched to a super-cooling mode, and the cold accumulation device comprises a first electric regulating valve (5) and a second electric regulating valve (7) which are opened, an electric switching valve (6) is closed, and the cold accumulation load is adjusted by regulating the opening of the second electric regulating valve (7);
the cold source BA automatic control system starts a standby refrigeration system and comprises a standby water chilling unit (1) and a standby chilled water pump (3) to realize super rapid cold filling.
7. The device according to claim 1, wherein the cold accumulation device is further provided with a water inlet and outlet, an inlet hole and an exhaust hole, and the lower part of the cold accumulation device is further provided with a water outlet, a pressure sensor, a temperature sensor and a control box.
8. The device according to claim 1, characterized in that the cold accumulation device is further provided with water flow distributors at both ends, wherein the water flow distributors are used for stably introducing the freezing levels of the air conditioners with different temperatures into the cold accumulation tank (4) and forming an inclined temperature layer in the cold accumulation tank (4).
9. The control system of the cold accumulation device is characterized by comprising a water chilling unit (1), a heat exchanger (2), a chilled water pump (3), a cold accumulation tank (4), a chilled water return pipeline (8), a chilled water supply pipeline (9), a cold source BA automatic control system, a first electric regulating valve (5), an electric switch valve (6) and a second electric regulating valve (7);
the water chiller (1) is connected with the heat exchanger (2), the heat exchanger (2) is connected with the chilled water pump (3), the first electric regulating valve (5) and the electric switching valve (6) are respectively connected with the chilled water supply pipeline (9), and the second electric regulating valve (7) is connected with the chilled water return pipeline (8) and the chilled water supply pipeline (9);
the cold source BA autonomous system switches a cold charging and discharging mode of the cold accumulation device through controlling the first electric regulating valve (5), the electric switching valve (6) and the second electric regulating valve (7), and the cold charging and discharging mode comprises a normal running mode, an emergency cold discharging mode, a super cold charging mode and an off-line maintenance mode.
10. The control system of a cold storage device according to claim 9, wherein the cold source BA automatic control system switches the cold charging and discharging modes according to the state of the chiller, the water storage condition in the cold storage device and the temperature change in the cold storage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320594637.2U CN220524722U (en) | 2023-03-23 | 2023-03-23 | Cold accumulation device and control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320594637.2U CN220524722U (en) | 2023-03-23 | 2023-03-23 | Cold accumulation device and control system thereof |
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