CN212208051U - Liquid level protection device for ice pool of cold station - Google Patents
Liquid level protection device for ice pool of cold station Download PDFInfo
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- CN212208051U CN212208051U CN202020950313.4U CN202020950313U CN212208051U CN 212208051 U CN212208051 U CN 212208051U CN 202020950313 U CN202020950313 U CN 202020950313U CN 212208051 U CN212208051 U CN 212208051U
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Abstract
The application provides a liquid level protection device for cold station ice chest, includes: the system comprises a first liquid level sensor, a second liquid level sensor, a first timing module, a second timing module and an analysis and judgment module, wherein the first liquid level sensor and the second liquid level sensor are used for respectively detecting the liquid levels of a first ice pool and a second ice pool, the first timing module and the second timing module are used for respectively counting the liquid level duration time of the first ice pool and the liquid level duration time of the second ice pool, the analysis and judgment module is connected with the first liquid level sensor and the second liquid level sensor, and; the analysis and judgment module is used for receiving liquid level signals from the first liquid level sensor and the second liquid level sensor, judging whether the liquid level signals are normal or not and outputting a judgment result to the control command module; the control command module is used for generating a corresponding control command according to the judgment result and sending the control command to the protection action module; and the protection action module is used for executing corresponding protection actions according to the control command. The device that this application provided can report to the police and carry out automatic timely processing to the liquid level in cold station ice chest, ensures the operation safety of cooling system.
Description
Technical Field
The application relates to the technical field of liquid level control, in particular to a liquid level protection device for an ice pool of a cold station.
Background
In recent years, with the rapid development of city construction in China, a plurality of high-density building groups (such as residential districts and commercial building groups) appear, and the high-density building groups are suitable for centralized cooling. The centralized cooling system is used as a part of a modern urban energy system, and has outstanding advantages in the aspects of improving the energy utilization efficiency, protecting the ecological environment, efficiently utilizing the building space, beautifying the urban image and the like.
With the further improvement of the energy-saving and environment-friendly requirements and the cooling fine management requirements, the scientific and reasonable requirements on the hydraulic balance adjustment of the centralized cooling system are more and more strong, and the liquid level and the flow of the ice pool of the cooling station need to be monitored in real time and controlled automatically and scientifically.
At present, although some liquid level control systems composed of a PLC or a singlechip are provided, most of the liquid level control systems have the problems of untimely data transmission and no visible picture operation, so that the cooling efficiency is reduced, and the cooling facility is possibly destroyed due to untimely data response.
Therefore, a device is urgently needed to automatically adjust the liquid level and the flow of the ice pool, ensure that the water supply temperature of the cold station meets the requirement, improve the utilization efficiency of the refrigerating unit and achieve the effects of energy conservation and environmental protection.
SUMMERY OF THE UTILITY MODEL
The application aims at providing a liquid level protection device for an ice pool of a cold station to solve the technical problems that the liquid level alarm of the ice pool in the existing device is not timely in disposal and the operation safety of a cold supply system is influenced.
The purpose of the application can be realized by the following technical scheme:
the utility model provides a liquid level protection device for cold station ice chest, uses in concentrating the cooling system, the system is including the first system and the second system that communicate each other, first system includes first ice chest and second ice chest, first ice chest lateral wall is equipped with an overflow mouth, overflow mouth department is provided with the rivers switch sensor, includes:
the device comprises a first liquid level sensor for detecting the liquid level of a first ice pool, a second liquid level sensor for detecting the liquid level of a second ice pool, a first timing module for counting the duration time of the liquid level of the first ice pool, a second timing module for counting the duration time of the liquid level of the second ice pool, an analysis and judgment module connected with the first liquid level sensor and the second liquid level sensor, a control command module connected with the analysis and judgment module, and a protection action module connected with the control command module;
the analysis and judgment module is used for judging whether the ice pool liquid level state is normal or not according to liquid level signals from the first liquid level sensor and the second liquid level sensor and time signals from the first timing module and the second timing module, and outputting a judgment result to the control command module;
the control command module is used for generating a corresponding control command according to the judgment result and sending the control command to the protection action module;
and the protection action module is used for executing corresponding protection actions according to the control command.
Optionally, the method further comprises: and the alarm module comprises a light alarm unit and an alarm bell alarm unit.
Optionally, the analysis and judgment module includes: the first limit unit is used for comparing a first liquid level detected by a first liquid level sensor with a first preset liquid level range, comparing first time counted by a first timing module with first preset time, and outputting a judgment result that the liquid level of the first ice pool is normal when the first liquid level does not exceed the first preset liquid level range or the first liquid level exceeds the first preset liquid level range but the first time does not exceed the first preset time range; otherwise, the first limit unit outputs a judgment result of the abnormal liquid level of the first ice pool.
Optionally, the analysis and judgment module includes: the second limit unit is used for comparing a second liquid level detected by a second liquid level sensor with a second preset liquid level range, comparing second time counted by a second timing module with second preset time, and outputting a judgment result that the liquid level of the second ice pool is normal when the second liquid level does not exceed the second preset liquid level range or the second liquid level exceeds the second preset liquid level range but the second time does not exceed the second preset time range; otherwise, the second limit unit outputs a judgment result of the second ice pool liquid level abnormity.
Optionally, the command control module includes: and the first instruction unit is used for generating a first control command according to the judgment result of the first limit value unit and sending the first control command to the protection action module.
Optionally, the command control module includes: and the second instruction unit is used for generating a second control command according to the judgment result of the second limit value unit and sending the second control command to the protection action module.
Optionally, the protection action module includes: and the first execution unit is used for executing corresponding protection actions on the first ice pool according to a first control command.
Optionally, the protection action module includes: and the second execution unit is used for executing corresponding protection actions on the second ice pool according to a second control command.
Optionally, the first preset time is 30 seconds.
Optionally, the second preset time is 5 seconds.
The application provides a liquid level protection device for cold station ice chest uses in concentrating the cooling system, the system is including the first system and the second system that communicate each other, the first system includes first ice chest and second ice chest, first ice chest lateral wall is equipped with an overflow mouth, overflow mouth department is provided with the rivers switch sensor, includes: the device comprises a first liquid level sensor for detecting the liquid level of a first ice pool, a second liquid level sensor for detecting the liquid level of a second ice pool, a first timing module for counting the duration time of the liquid level of the first ice pool, a second timing module for counting the duration time of the liquid level of the second ice pool, an analysis and judgment module connected with the first liquid level sensor and the second liquid level sensor, a control command module connected with the analysis and judgment module, and a protection action module connected with the control command module; the analysis and judgment module is used for judging whether the ice pool liquid level state is normal or not according to liquid level signals from the first liquid level sensor and the second liquid level sensor and time signals from the first timing module and the second timing module, and outputting a judgment result to the control command module; the control command module is used for generating a corresponding control command according to the judgment result and sending the control command to the protection action module; and the protection action module is used for executing corresponding protection actions according to the control command. The liquid level protection device for the ice pool of the cold station can automatically and timely process the liquid level alarm of the ice pool of the cold station, automatically adjust the liquid level and the flow rate of the ice pool, effectively ensure that the liquid level in the ice pool is within a preset range, and ensure the running safety of a cooling system; the water supply temperature of the cold station can meet the requirement, the utilization efficiency of the refrigerating unit can be improved, and the effects of energy conservation and environmental protection are achieved.
Drawings
FIG. 1 is a schematic structural diagram of a liquid level protection device for an ice pool of a cold station provided by the application;
FIG. 2 is a schematic view of a centralized cooling system of a liquid level protection device for an ice pool of a cold station according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a system for providing a liquid level protection device for an ice bank of a cold station according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a second-stage system of a liquid level protection device for an ice pool of a cold station according to an embodiment of the present application.
Detailed Description
The embodiment of the application provides a liquid level protection device for an ice pool of a cold station to solve the technical problems that the liquid level alarm of the ice pool in the existing device is not timely processed and the operation safety of a cold supply system is influenced.
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The embodiment of the application provides a liquid level protection device for cold station ice chest, uses in concentrating the cooling system, the system is including the first system and the second system that communicate each other, the first system includes first ice chest and second ice chest, first ice chest lateral wall is equipped with an overflow mouth, overflow mouth department is provided with the water switch sensor, includes:
the device comprises a first liquid level sensor for detecting the liquid level of a first ice pool, a second liquid level sensor for detecting the liquid level of a second ice pool, a first timing module for counting the duration time of the liquid level of the first ice pool, a second timing module for counting the duration time of the liquid level of the second ice pool, an analysis and judgment module connected with the first liquid level sensor and the second liquid level sensor, a control command module connected with the analysis and judgment module, and a protection action module connected with the control command module;
the analysis and judgment module is used for judging whether the ice pool liquid level state is normal or not according to liquid level signals from the first liquid level sensor and the second liquid level sensor and time signals from the first timing module and the second timing module, and outputting a judgment result to the control command module;
the control command module is used for generating a corresponding control command according to the judgment result and sending the control command to the protection action module;
and the protection action module is used for executing corresponding protection actions according to the control command.
Optionally, the method further comprises: and the alarm module comprises a light alarm unit and an alarm bell alarm unit.
Optionally, the analysis and judgment module includes: the first limit unit is used for comparing a first liquid level detected by a first liquid level sensor with a first preset liquid level range, comparing first time counted by a first timing module with first preset time, and outputting a judgment result that the liquid level of the first ice pool is normal when the first liquid level does not exceed the first preset liquid level range or the first liquid level exceeds the first preset liquid level range but the first time does not exceed the first preset time range; otherwise, the first limit unit outputs a judgment result of the abnormal liquid level of the first ice pool.
Optionally, the analysis and judgment module includes: the second limit unit is used for comparing a second liquid level detected by a second liquid level sensor with a second preset liquid level range, comparing second time counted by a second timing module with second preset time, and outputting a judgment result that the liquid level of the second ice pool is normal when the second liquid level does not exceed the second preset liquid level range or the second liquid level exceeds the second preset liquid level range but the second time does not exceed the second preset time range; otherwise, the second limit unit outputs a judgment result of the second ice pool liquid level abnormity.
Optionally, the command control module includes: and the first instruction unit is used for generating a first control command according to the judgment result of the first limit value unit and sending the first control command to the protection action module.
Optionally, the command control module includes: and the second instruction unit is used for generating a second control command according to the judgment result of the second limit value unit and sending the second control command to the protection action module.
Optionally, the protection action module includes: and the first execution unit is used for executing corresponding protection actions on the first ice pool according to a first control command.
Optionally, the protection action module includes: and the second execution unit is used for executing corresponding protection actions on the second ice pool according to a second control command.
Optionally, the first preset time is 30 seconds.
Optionally, the second preset time is 5 seconds.
The liquid level protection device for the ice pool of the cold station, provided by the embodiment of the application, can automatically and timely process the liquid level alarm of the ice pool of the cold station, automatically adjust the liquid level and the flow rate of the ice pool, effectively ensure that the liquid level in the ice pool is within the preset range, and ensure the running safety of a cold supply system; the water supply temperature of the cold station can meet the requirement, the utilization efficiency of the refrigerating unit can be improved, and the effects of energy conservation and environmental protection are achieved.
According to the liquid level protection device for the ice pool of the cold station, the pressure loss difference of the water loops of all the regions is large during cold supply, and the chilled water system adopts a cold source side constant flow primary pump and a load side variable flow secondary pump system; the concentrated cooling system in the embodiment of the application has 4 water loops according to the use partitions, the water loops are closed double-pipe different-stroke circulation systems, and dynamic balance valves are arranged at horizontal branch pipes of all layers to solve the problem of unbalance of the water loop systems.
In the liquid level protection device for the cold station ice pool provided by the embodiment of the application, the first-stage system and the second-stage system belong to different network controllers, the network controllers can be communicated with each other, and the automatic control system server is communicated with the network controllers of the first-stage system and the second-stage system through a local area network. Aiming at the sudden event that the liquid level of the ice pool of the cold station in the first-stage system and the second-stage system exceeds a warning point, the automatic emergency treatment is carried out on the liquid level alarm of the ice pool through the automatic control system, and the operation safety is effectively guaranteed. The automatic control system can be niagara platform software, communicates with equipment by using a standard communication protocol, and can realize functions of data acquisition, logic operation analysis, graphic data display, data history record, instruction issuing and the like.
In the embodiment of the application, the input type liquid level sensor is used for detecting the pressure of the water level, the input type liquid level sensor is based on the principle that the static pressure of the measured liquid is proportional to the height of the liquid, an advanced isolation type diffused silicon sensitive element or a ceramic capacitor pressure sensitive sensor is adopted, the static pressure is converted into an electric signal, the electric signal is converted into a standard electric signal (such as 4-20 mA) through temperature compensation and linear correction, and the liquid level of an ice pond can be displayed on an interface of an automatic control system in real time.
According to the liquid level protection device for the ice pool of the cold station, the automatic control of the valve is controlled by numbers or digital intervals, namely different numbers or digital intervals correspond to the unique state of the controlled valve. When the liquid level signal collected by the automatic control system reaches the emergency action condition of the ice pool valve, a defined number is output, the digital interval condition of the emergency action is reached, and then a corresponding instruction is output to the controlled valve at the same time. The same set of control program can be used for achieving the automatic operation and the emergency action of the valve.
The specific case one is as follows:
first stage system of concentrated cooling system includes first ice chest and second ice chest, the height in first ice chest is about 5500mm, the height in second ice chest is about 5400mm, first ice chest, the upper portion in second ice chest is equipped with three wet return respectively, be equipped with an governing valve on every wet return, be equipped with a ooff valve on the lower part outlet pipe in first ice chest, be equipped with an governing valve on the lower part outlet pipe in second ice chest, carry out liquid level control to first ice chest in the first stage system, second ice chest:
case (1): when the liquid level of the first ice pool is greater than 5300mm, triggering a light alarm;
case (2): when the liquid level of the first ice pool is greater than 5350mm, triggering an alarm bell;
case (3): when the liquid level of the first ice pool is greater than 5360mm and lasts for 30 seconds, the ice pool valve executes a first emergency action, specifically: closing all valves on a return pipe of the first ice pool, opening valves on a water outlet pipe, opening a first valve, a second valve and a third valve on a return pipe of the second ice pool to 60%, closing the valves on the water outlet pipe of the second ice pool, and adjusting the valve opening on a chilled water conveying pipeline to 30%;
case (4): when the liquid level of the first ice pool is less than 5280mm, the valve is switched back to the state before action, and when 5180mm is less than 5360mm, the valve is kept in the original state;
case (5): when the liquid level of the first ice pool is more than 5360mm and lasts for 5 seconds and the overflow switch acts for 10 seconds, the secondary pump of the primary system stops running for 10 minutes;
case (6): when the liquid level of the first ice pool is more than 5360mm, the liquid level of the second ice pool is more than 5400mm and lasts for 5 seconds, the ice pool valve executes a second emergency action, which specifically comprises the following steps: all valves on the water return pipes and the water outlet pipes of the first ice pool and the second ice pool are closed, and the opening degree of the valves on the chilled water conveying pipeline is set to be 80%.
Case (7): after condition (6) was triggered and the overflow switch was actuated for 10 seconds, the secondary pumps of the first and second stage systems were simultaneously stopped for 10 minutes.
The specific case two is as follows:
the second stage system of concentrated cooling system includes third ice chest and fourth ice chest, the height in third ice chest is about 5350mm, the height in fourth ice chest is about 5300mm, two wet return are established respectively on the upper portion in third ice chest, fourth ice chest, be equipped with an governing valve on every wet return, be equipped with a ooff valve on the lower part outlet pipe in third ice chest, be equipped with an governing valve on the lower part outlet pipe in fourth ice chest, carry out liquid level control to third ice chest in the second stage system, fourth ice chest:
case (1): when the liquid level of the third ice pool is more than 5175mm, triggering light to alarm;
case (2): when the liquid level of the third ice pool is over 5200mm, triggering an alarm bell;
case (3): when the liquid level of the third ice bank is greater than 5250mm and lasts for 30 seconds, the ice bank valve executes a first emergency action, specifically: closing all valves on a water return pipe of the third ice pool, opening valves on a water outlet pipe, adjusting the opening degrees of a first valve and a second valve on a water return pipe of the fourth ice pool to 90%, closing a valve on a water outlet pipe of the fourth ice pool, and adjusting the opening degree of a valve on a chilled water conveying pipeline to 50%;
case (4): when the liquid level of the third ice pool is less than 5180mm, the valve is switched back to the state before action, and when the liquid level is less than 5250mm when the liquid level is less than 5180mm, the valve is kept in the original state;
case (5): when the liquid level of the third ice pool is greater than 5250mm and lasts for 5 seconds and the overflow switch acts for 10 seconds, the secondary pump of the second-stage system stops running for 10 minutes;
case (6): when the liquid level of the third ice pool is greater than 5250mm and the liquid level of the fourth ice pool is greater than 5300mm for 5 seconds, the ice pool valve executes a second emergency action, which specifically comprises the following steps: all valves on the water return pipes and the water outlet pipes of the third ice pool and the fourth ice pool are closed, and the opening degree of the valves on the chilled water conveying pipeline is adjusted to 80%.
Case (7): after condition (6) was triggered and the overflow switch was actuated for 10 seconds, the secondary pumps of the first and second stage systems were simultaneously stopped for 10 minutes.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. The utility model provides a liquid level protection device for cold station ice chest, uses in concentrating the cooling system, the system is including the first system and the second system that communicate each other, first system includes first ice chest and second ice chest, first ice chest lateral wall is equipped with an overflow mouth, overflow mouth department is provided with rivers switch sensor, its characterized in that includes:
the device comprises a first liquid level sensor for detecting the liquid level of a first ice pool, a second liquid level sensor for detecting the liquid level of a second ice pool, a first timing module for counting the duration time of the liquid level of the first ice pool, a second timing module for counting the duration time of the liquid level of the second ice pool, an analysis and judgment module connected with the first liquid level sensor and the second liquid level sensor, a control command module connected with the analysis and judgment module, and a protection action module connected with the control command module;
the analysis and judgment module is used for judging whether the ice pool liquid level state is normal or not according to liquid level signals from the first liquid level sensor and the second liquid level sensor and time signals from the first timing module and the second timing module, and outputting a judgment result to the control command module;
the control command module is used for generating a corresponding control command according to the judgment result and sending the control command to the protection action module;
and the protection action module is used for executing corresponding protection actions according to the control command.
2. The liquid level protection device for a cold station ice bank of claim 1, further comprising: and the alarm module comprises a light alarm unit and an alarm bell alarm unit.
3. The liquid level protection device for the ice bank of the cold station as claimed in claim 2, wherein the analysis and judgment module comprises: the first limit unit is used for comparing a first liquid level detected by a first liquid level sensor with a first preset liquid level range, comparing first time counted by a first timing module with first preset time, and outputting a judgment result that the liquid level of the first ice pool is normal when the first liquid level does not exceed the first preset liquid level range or the first liquid level exceeds the first preset liquid level range but the first time does not exceed the first preset time range; otherwise, the first limit unit outputs a judgment result of the abnormal liquid level of the first ice pool.
4. The liquid level protection device for the ice bank of the cold station as claimed in claim 3, wherein the analysis and judgment module comprises: the second limit unit is used for comparing a second liquid level detected by a second liquid level sensor with a second preset liquid level range, comparing second time counted by a second timing module with second preset time, and outputting a judgment result that the liquid level of the second ice pool is normal when the second liquid level does not exceed the second preset liquid level range or the second liquid level exceeds the second preset liquid level range but the second time does not exceed the second preset time range; otherwise, the second limit unit outputs a judgment result of the second ice pool liquid level abnormity.
5. The liquid level protection device for a cold station ice bank of claim 4, wherein said control command module comprises: and the first instruction unit is used for generating a first control command according to the judgment result of the first limit value unit and sending the first control command to the protection action module.
6. The liquid level protection device for a cold station ice bank of claim 5, wherein said control command module comprises: and the second instruction unit is used for generating a second control command according to the judgment result of the second limit value unit and sending the second control command to the protection action module.
7. The liquid level protection device for a cold station ice bank of claim 6, wherein said protection action module comprises: and the first execution unit is used for executing corresponding protection actions on the first ice pool according to a first control command.
8. The liquid level protection device for a cold station ice bank of claim 7, wherein said protection action module comprises: and the second execution unit is used for executing corresponding protection actions on the second ice pool according to a second control command.
9. The liquid level protection device for an ice bank of a cold station according to claim 3, wherein said first preset time is 30 seconds.
10. The liquid level protection device for an ice bank of a cold station according to claim 4, wherein said second preset time is 5 seconds.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020950313.4U CN212208051U (en) | 2020-05-29 | 2020-05-29 | Liquid level protection device for ice pool of cold station |
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| CN202020950313.4U CN212208051U (en) | 2020-05-29 | 2020-05-29 | Liquid level protection device for ice pool of cold station |
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