CN210463216U - Automatic control system for preparing hot water by taking chilled water as heat source - Google Patents
Automatic control system for preparing hot water by taking chilled water as heat source Download PDFInfo
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- CN210463216U CN210463216U CN201921113478.XU CN201921113478U CN210463216U CN 210463216 U CN210463216 U CN 210463216U CN 201921113478 U CN201921113478 U CN 201921113478U CN 210463216 U CN210463216 U CN 210463216U
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Abstract
The utility model provides an use chilled water to prepare hydrothermal automated control system as heat source, including the refrigerator, the water source heat pump, chilled water pump and cooling water pump, chilled water pump input end is connected with the chilled water wet return, chilled water pump output end communicates with the cooling water system input of refrigerator and water source heat pump respectively, refrigerator and water source heat pump cooling water system output all communicate with the chilled water delivery pipe, be equipped with first butterfly valve on the chilled water delivery pipe, the cooling water system input of refrigerator is equipped with temperature probe, temperature probe and controller electricity are connected, be connected with the lateral conduit on the chilled water delivery pipe, the lateral conduit other end and chilled water wet return intercommunication. Chilled water is used as a heat source, so that both cold energy and heat energy can be used, energy is fully utilized, and benefit is maximized. When the water source heat pump is unloaded and started or stopped according to the load, the temperature fluctuation of the chilled water is within +/-1 ℃, and various severe working conditions can be met; the system has a large adjusting space, and the operation is not needed to be considered too much, so that the labor is saved.
Description
Technical Field
The utility model belongs to the technical field of refrigeration and warm logical, in particular to use refrigerated water to prepare hydrothermal automated control system as the heat source.
Background
An existing automatic control system for preparing hot water by taking chilled water as a heat source is shown in an attached drawing 1 of the specification, high-temperature chilled water return water enters a chilled water pump 9 through a chilled water return pipe 2, is pressurized by the chilled water pump 9 and then is sent to a refrigerator 7 and a water source heat pump 8, low-temperature chilled water is generated through heat exchange of refrigerants circulating in the refrigerator 7 and the water source heat pump 8, and is sent to a use point for use through a chilled water supply pipe 1. A temperature probe is arranged at a water outlet pipe of the refrigerating machine 7 to detect the temperature of water, the temperature probe is electrically connected with a controller, and the controller automatically controls the circulation amount of the refrigerant to realize the stability of the temperature of the refrigerating water.
The cooling water supplies water and enters into the cooling water pump 10 by the cooling water delivery pipe 4, is sent to the refrigerator 7 through the pressurization of the cooling water pump 10, is equipped with the high temperature refrigerant in the refrigerator 7, by the heat transfer of high temperature refrigerant after, has formed the cooling water return water, and the cooling water return water is sent to the cooling tower cooling by the cooling water wet return 3, recycles.
The working principle of the water source heat pump 8 is completely the same as that of the refrigerator 7 in the refrigeration mode, a cooling water supply and return valve is closed, low-temperature hot water return enters from a hot water return pipe 6 and is pressurized by an air-conditioning water pump 11 and sent to the water source heat pump 8, high-temperature hot water is produced after heat exchange of a high-temperature refrigerant of the water source heat pump 8 and is discharged from a hot water supply pipe 5, a temperature probe is arranged on the hot water supply pipe 5 and used for detecting the temperature of the water, the temperature probe is electrically connected with a controller, and the controller automatically controls the circulation amount of the refrigerant to achieve the stability of the.
A first butterfly valve 1201 is provided between the chilled water outlet of the chiller 7 and the chilled water outlet of the waterhead heat pump 8.
The existing design is prone to temperature fluctuations due to:
the water source heat pump 8 runs under the minimum load, the temperature of hot water can still rise, when the temperature rises to a stop value, the water source heat pump 8 automatically stops, and the water source heat pump 8 automatically starts after the temperature is reduced to a start value; in the time of the water source heat pump 8 shutting down, the chilled water does not stop running, and the chilled water with high temperature is directly sent to the use point, which can cause the great fluctuation of the chilled water supply temperature.
SUMMERY OF THE UTILITY MODEL
In view of the technical problems existing in the background art, the automatic control system for preparing hot water by taking chilled water as a heat source can control the temperature fluctuation of the chilled water within +/-1 ℃, and can meet various severe working conditions; the system has a large adjusting space, and the operation is not needed to be considered too much, so that the labor is saved.
In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:
the utility model provides an use chilled water to prepare hydrothermal automated control system as heat source, including the refrigerator, the water source heat pump, chilled water pump and cooling water pump, chilled water pump input end is connected with the chilled water wet return, chilled water pump output end communicates with the cooling water system input of refrigerator and water source heat pump respectively, refrigerator and water source heat pump cooling water system output all communicate with the chilled water delivery pipe, be equipped with first butterfly valve on the chilled water delivery pipe, the cooling water system input of refrigerator is equipped with temperature probe, temperature probe and controller electricity are connected, be connected with the lateral conduit on the chilled water delivery pipe, the lateral conduit other end and chilled water wet return intercommunication.
In the preferred scheme, the connection point of the branch pipeline and the chilled water supply pipe is positioned between the first butterfly valve and the output end of the cold water system of the water source heat pump.
In a preferred scheme, a second butterfly valve is arranged on the branch pipeline.
In a preferred scheme, the second butterfly valve is used for being electrically connected with the controller.
This patent can reach following beneficial effect:
chilled water is used as a heat source, so that both cold energy and heat energy can be used, energy is fully utilized, and benefit is maximized. When the water source heat pump is unloaded and started or stopped according to the load, the temperature fluctuation of the chilled water is within +/-1 ℃, and various severe working conditions can be met; the system has a large adjusting space, and the operation is not needed to be considered too much, so that the labor is saved.
Drawings
The invention will be further explained with reference to the following figures and examples:
FIG. 1 is a prior art system connection diagram;
fig. 2 is a system connection diagram of the present invention.
In the figure: a chilled water supply pipe 1, a chilled water return pipe 2, a cooling water return pipe 3, a cooling water supply pipe 4, a hot water supply pipe 5, a hot water return pipe 6, a freezer 7, a water source heat pump 8, a chilled water pump 9, a cooling water pump 10, an air-conditioning water pump 11, a first butterfly valve 1201, a second butterfly valve 1202, and a branch pipe 13.
Detailed Description
A preferred scheme is as shown in fig. 2, an automatic control system for preparing hot water by using chilled water as a heat source comprises a refrigerating machine 7, a water source heat pump 8, a chilled water pump 9 and a cooling water pump 10, wherein the input end of the chilled water pump 9 is connected with a chilled water return pipe 2, the output end of the chilled water pump 9 is respectively communicated with the input ends of the refrigerating machine 7 and the water source heat pump 8, the output ends of the refrigerating machine 7 and the water source heat pump 8 are respectively communicated with a chilled water supply pipe 1, the chilled water supply pipe 1 is provided with a first butterfly valve 1201, the input end of the chilled water system of the refrigerating machine 7 is provided with a temperature probe, the temperature probe is electrically connected with a controller, the chilled water supply pipe 1 is connected with a branch pipe 13;
the low-temperature chilled water produced by the water source heat pump 8 is not merged with the low-temperature chilled water produced by the refrigerator 7 and then is sent to a use point through the chilled water supply pipe 1 for use, but is sent to the chilled water return pipe 2 through the branch pipeline 13, the low-temperature chilled water is mixed with the chilled water return water and then is sent to the refrigerator 7 through the chilled water pump 9, and the refrigerator 7 is conveyed to the use point through the chilled water supply pipe 1 for use; when the water source heat pump 8 is automatically started and stopped, the refrigerator 7 can control the fluctuation of the chilled water through the self regulation function.
Further, the connection point of the branch pipe 13 and the chilled water supply pipe 1 is located between the first butterfly valve 1201 and the cold water system output of the waterhead heat pump 8.
Further, a second butterfly valve 1202 is provided on the branch pipe 13.
Further, a second butterfly valve 1202 is adapted to be electrically connected to the controller.
The operation steps of the whole device are as follows:
the low-temperature chilled water produced by the water source heat pump 8 is not converged with the low-temperature chilled water produced by the refrigerator 7 and then is sent to a use point through the chilled water supply pipe 1 for use, but is sent to the chilled water return pipe 2 through the branch pipeline 13, the low-temperature chilled water is mixed with the chilled water return water, and then is pumped to the refrigerator 7 through the chilled water pump 9, and the design ensures that the chilled water of the chilled water supply pipe 1 passes through the refrigerator 7 and has the temperature within a set range; the water source heat pump 8 makes full use of the cold energy by reducing the return water temperature of the chilled water;
because the refrigerator 7 and the water source heat pump 8 run simultaneously, the flow direction of water is switched through two butterfly valves, namely a first butterfly valve 1201 and a second butterfly valve 1202, so that a part of cold water passing through the water source heat pump 8 is reflected to the inlet of the refrigerating water pump 9 after heat is absorbed by the water source heat pump 8, the temperature of the part of refrigerated water is reduced after the heat is absorbed by the water source heat pump 8, but the temperature change is not controllable, the water temperature has fallen back to the inlet of the chilled water pump 9 for recirculation, the other most of the chilled water is cooled to 7 ℃ by the refrigerator 7 and then is sent to a user for cooling, meanwhile, the heat is brought back to be used as a heat source of the water source heat pump 8, the water source heat pump 8 controls the hot water supply of the water source heat pump 8 to be 45 ℃ through heat energy transfer to supply to users needing hot water, therefore, the energy of the hot water and the cooled chilled water can be utilized, and the refrigerating load of the refrigerator is reduced.
Claims (4)
1. The utility model provides an use refrigerated water to prepare hydrothermal automated control system as heat source, including refrigerator (7), water source heat pump (8), frozen water pump (9) and cooling water pump (10), frozen water pump (9) input is connected with refrigerated water wet return (2), frozen water pump (9) output communicates with the cooling water system input of refrigerator (7) and water source heat pump (8) respectively, refrigerator (7) and water source heat pump (8) cooling water system output all communicate with refrigerated water delivery pipe (1), be equipped with first butterfly valve (1201) on refrigerated water delivery pipe (1), the cooling water system input of refrigerator (7) is equipped with temperature probe, temperature probe is connected with the controller electricity, its characterized in that: a branch pipeline (13) is connected on the chilled water supply pipe (1), and the other end of the branch pipeline (13) is communicated with the chilled water return pipe (2).
2. The automatic control system for preparing hot water by using chilled water as a heat source according to claim 1, characterized in that: the connection point of the branch pipeline (13) and the chilled water supply pipe (1) is positioned between the first butterfly valve (1201) and the output end of the cold water system of the water source heat pump (8).
3. The automatic control system for preparing hot water by using chilled water as a heat source according to claim 1, characterized in that: the branch pipeline (13) is provided with a second butterfly valve (1202).
4. The automatic control system for preparing hot water by using chilled water as a heat source according to claim 3, characterized in that: the second butterfly valve (1202) is for electrical connection with a controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921113478.XU CN210463216U (en) | 2019-07-16 | 2019-07-16 | Automatic control system for preparing hot water by taking chilled water as heat source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921113478.XU CN210463216U (en) | 2019-07-16 | 2019-07-16 | Automatic control system for preparing hot water by taking chilled water as heat source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210463216U true CN210463216U (en) | 2020-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921113478.XU Active CN210463216U (en) | 2019-07-16 | 2019-07-16 | Automatic control system for preparing hot water by taking chilled water as heat source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210463216U (en) |
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2019
- 2019-07-16 CN CN201921113478.XU patent/CN210463216U/en active Active
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