CN216745159U - Liquid level automatic control system and refrigerator - Google Patents
Liquid level automatic control system and refrigerator Download PDFInfo
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- CN216745159U CN216745159U CN202220128369.0U CN202220128369U CN216745159U CN 216745159 U CN216745159 U CN 216745159U CN 202220128369 U CN202220128369 U CN 202220128369U CN 216745159 U CN216745159 U CN 216745159U
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Abstract
The utility model provides a liquid level automatic control system and a refrigerator, wherein a liquid storage tank communicated with a liquid supply device is arranged in the refrigerator, the liquid level automatic control system is arranged between the liquid supply device and the liquid storage tank, and the liquid level automatic control system comprises: a main regulating loop, an auxiliary regulating loop and a control valve; the auxiliary regulating loop is used for detecting a liquid flow value in the process that the liquid supply device supplies liquid to the liquid storage tank; the main regulating loop is used for detecting a liquid level value in the liquid storage tank, comparing and calculating the liquid level value with a liquid level preset value, and determining a control value; the auxiliary regulating loop determines a flow control instruction according to the control value and the liquid flow value; and the control valve controls the flow of the liquid according to the flow control instruction. The automatic liquid level control system and the refrigerator provided by the utility model can automatically monitor the liquid level value of the refrigerator and the cooling liquid supplement condition in real time, thereby reducing the daily workload of engineers.
Description
Technical Field
The utility model relates to the field of automatic control and monitoring, in particular to an automatic liquid level control system and a refrigerator.
Background
In the ion implantation process, the vacuum state of the reaction chamber in the machine is very important, and in order to maintain the vacuum state in the reaction chamber, the normal operation of the compressor and the dry pump needs to be maintained. Because both of them are high-power devices and have large heat productivity, it is very important to keep the heat dissipation of the devices smooth. The cooling liquid in the three-circuit refrigerator is one of the factors for ensuring the normal operation of the three-circuit refrigerator, and in the normal operation process of the three-circuit refrigerator, the cooling liquid for circulation is more or less lost in the operation process, and the level of the cooling liquid in the three-circuit refrigerator is required to be checked manually frequently. Because the other affiliated board of three return circuits refrigerator is more, and the environment is abominable relatively, and the inspection at every turn need consume manpower and materials, and the linker level gauge pipeline of plus three return circuits refrigerator coolant liquid is thinner, and easy the jam leads to the liquid level to show inaccurately, influences engineer's observation on the spot. Meanwhile, because there is no remote monitoring device, the water level condition of the cooling liquid in the three-loop refrigerating machine cannot be monitored in real time, and if internal leakage occurs, the situation can be discovered only when a low-water-level machine station gives an alarm, which may cause unexpected loss.
Therefore, how to provide an automatic liquid level control system and a refrigerator to overcome the above-mentioned drawbacks in the prior art is becoming one of the technical problems to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an automatic liquid level control system and a refrigerator, and aims to solve the problems that in the prior art, the liquid level change of cooling liquid in the refrigerator cannot be accurately monitored in real time, and the machine cannot normally run due to too low liquid level of the cooling liquid.
In order to achieve the above object, the present invention provides an automatic liquid level control system for a refrigerator, the refrigerator including a liquid storage tank connected to a liquid supply device, the automatic liquid level control system being provided between the liquid supply device and the liquid storage tank, the automatic liquid level control system comprising: a main regulating loop, an auxiliary regulating loop and a control valve;
the auxiliary regulating loop is used for detecting a liquid flow value in the process that the liquid supply device conveys liquid to the liquid storage tank;
the main regulating loop is used for detecting a liquid level value in the liquid storage tank, comparing and calculating the liquid level value with a liquid level preset value and determining a control value;
the secondary regulating loop is also used for determining a flow control instruction according to the control value and the liquid flow value;
and the control valve controls the flow of the liquid according to the flow control instruction.
Optionally, the main regulating circuit includes a liquid level transmitter and a liquid level controller;
the liquid level transmitter is used for detecting the liquid level value in the liquid storage tank and sending the liquid level value to the liquid level controller;
and the liquid level controller compares and calculates the received liquid level value with the liquid level preset value to determine the control value.
Optionally, the main regulation loop further generates a main loop interference signal in a working process, and the main loop interference signal and the flow control command jointly act on the level value in the liquid storage tank.
Optionally, the secondary regulation loop comprises a flow transmitter and a flow controller;
the input end of the liquid level transmitter is connected with the liquid storage tank, the output end of the liquid level transmitter is connected with the input end of the liquid level controller, and the output end of the liquid level controller is connected with the input end of the flow controller;
the input end of the flow transmitter is connected with the output end of the control valve, and the output end of the flow transmitter is connected with the input end of the flow controller;
the flow transmitter is used for detecting a liquid flow value in the process that the liquid supply device conveys liquid to the liquid storage tank and sending the liquid flow value to the flow controller;
the flow controller is used for comparing and calculating the control value and the liquid flow value to determine the flow control instruction.
Optionally, the secondary regulating circuit further generates a secondary circuit interference signal in the working process, and the secondary circuit interference signal and the flow rate of the liquid jointly act on a liquid flow rate value in the process of conveying the liquid from the liquid supply device to the liquid storage tank.
Optionally, the flow transmitter further comprises an alarm device, the alarm device is connected with the output end of the flow transmitter and receives the liquid flow value sent by the flow transmitter, and when the liquid flow value is greater than an alarm preset value, the alarm device sends out an alarm.
Optionally, the alarm device is an integral alarm, and the alarm preset value is set to be a preset proportion of the liquid storage tank.
Optionally, the system further comprises a machine digital display, and the machine digital display is used for receiving and displaying the control value.
Optionally, the control valve comprises: regulating the valve/frequency converter.
The utility model also provides a refrigerator comprising the automatic liquid level control system.
Compared with the prior art, the automatic liquid level control system and the refrigerating machine provided by the utility model have the following beneficial effects:
the utility model provides an automatic liquid level control system for a refrigerating machine, wherein a liquid storage tank communicated with a liquid supply device is arranged in the refrigerating machine, the automatic liquid level control system is arranged between the liquid supply device and the liquid storage tank, and the automatic liquid level control system comprises: a main regulating loop, an auxiliary regulating loop and a control valve; the auxiliary regulating circuit is used for detecting a liquid flow value in the process that the liquid supply device supplies liquid to the liquid storage tank; the main regulating loop is used for detecting a liquid level value in the liquid storage tank, comparing and calculating the liquid level value with a liquid level preset value and determining a control value; the secondary regulating loop is also used for determining a flow control instruction according to the control value and the liquid flow value; and the control valve controls the flow of the liquid according to the flow control instruction. According to the automatic liquid level control system provided by the utility model, the main regulating circuit, the auxiliary regulating circuit and the control valve are added, so that the automatic liquid level control system forms a closed-loop control circuit.
Because the refrigerator provided by the utility model and the automatic liquid level control system provided by the utility model belong to the same design of the utility model, the refrigerator at least has the same beneficial effects, and the refrigerator and the automatic liquid level control system are not described in detail.
Drawings
FIG. 1 is a schematic diagram of an automatic liquid level control system according to an embodiment of the present invention;
FIG. 2 is a block diagram of an automatic liquid level control system according to an embodiment of the present invention;
the system comprises a liquid level transmitter 101, a liquid level controller 102, a liquid level preset value 103, a machine digital display 104, a flow transmitter 201, a flow controller 202, a liquid storage tank 300, an alarm device 400, a control valve 500 and a liquid supply device 600.
Detailed Description
The following describes in more detail embodiments of the present invention with reference to the schematic drawings. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. It should be understood that the drawings are not necessarily to scale, showing the particular construction of the utility model, and that illustrative features in the drawings, which are used to illustrate certain principles of the utility model, may also be somewhat simplified. Specific design features of the utility model disclosed herein, including, for example, specific dimensions, orientations, locations, and configurations, will be determined in part by the particular intended application and environment of use. In the embodiments described below, the same reference numerals are used in common between different drawings to denote the same portions or portions having the same functions, and a repetitive description thereof will be omitted. In this specification, like reference numerals and letters are used to designate like items, and therefore, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.
Example one
The present embodiment provides an automatic liquid level control system, specifically referring to fig. 1-2 of the drawings, where fig. 1 is an automatic liquid level control system according to an embodiment of the present invention, fig. 2 is a block diagram of the automatic liquid level control system, and as is apparent from fig. 1 and 2, the automatic liquid level control system is used in a refrigerator, a liquid storage tank 300 communicated with a liquid supply device 600 is disposed in the refrigerator, the automatic liquid level control system is disposed between the liquid supply device 600 and the liquid storage tank 300, and the automatic liquid level control system includes: a primary regulation loop, a secondary regulation loop and a control valve 500; the secondary regulating circuit is used for detecting a liquid flow value in the process that the liquid supply device 600 supplies liquid to the liquid storage tank 300; the main regulating loop is used for detecting a liquid level value in the liquid storage tank 300, comparing and calculating the liquid level value with a liquid level preset value, and determining a control value; the secondary regulating loop is also used for determining a flow control instruction according to the control value and the liquid flow value; the control valve 500 controls the flow of the liquid according to the flow control command.
According to the automatic liquid level control system, the main adjusting loop, the auxiliary adjusting loop and the control valve 500 are added, so that the automatic liquid level control system forms a closed-loop control loop, and through the addition of the closed-loop control system, the automatic liquid level control system can automatically monitor the real-time condition of the liquid level of the refrigerating machine and the condition of supplementing the cooling liquid in the refrigerating machine in real time, can reduce the daily workload of engineers while ensuring the normal operation of the machine table, and obviously saves the cost of manpower and material resources.
Preferably, the primary regulation loop comprises a level transmitter 101 and a level controller 102; wherein, the liquid level transmitter 101 is used for detecting the liquid level value in the liquid storage tank 300 and sending the liquid level value to the liquid level controller 102; the liquid level controller 102 compares and calculates the received liquid level value with the liquid level preset value 103, and determines the control value. According to the arrangement, the liquid level transmitter 101 can detect the liquid level value in the liquid storage tank 300 in real time, and the liquid level controller 102 can compare the liquid level value with the liquid level preset value 103 and output the control value in real time, so that the liquid level in the liquid storage tank 300 is ensured to be in a proper range.
Preferably, the main loop interference signal is generated during the operation of the main loop, and the main loop interference signal and the flow control command jointly act on the level value in the liquid storage tank 300. With the arrangement, when interference signals including pressure fluctuation and the like of the liquid supply device 600 occur in the automatic liquid level control system, the main regulating loop can compensate the main loop interference signals correspondingly, so that the stability of the system is improved.
Preferably, the secondary regulation loop comprises a flow transmitter 201 and a flow controller 202; the input end of the liquid level transmitter 101 is connected to the liquid storage tank 300, the output end of the liquid level transmitter 101 is connected to the input end of the liquid level controller 102, and the output end of the liquid level controller 102 is connected to the input end of the flow controller 202; the input end of the flow transmitter 201 is connected with the output end of the control valve 500, and the output end of the flow transmitter 201 is connected with the input end of the flow controller 202; the flow transmitter 201 is configured to detect a liquid flow value during a process of delivering liquid to the liquid storage tank 300 by the liquid supply device 600, and send the liquid flow value to the flow controller 202; the flow controller 202 is configured to compare and calculate the manipulated value and the liquid flow value to determine the flow control command. In such a configuration, the automatic liquid level control system provided by the utility model forms a cascade control system, and compared with a single-loop control system, the cascade control system forms a double closed-loop control system by two controllers working in series. The main adjusting loop is used as a constant system, the auxiliary adjusting loop is used as a follow-up system, the control valve 500 can be adjusted together by using the auxiliary adjusting loop formed by the flow transmitter 201 and the flow controller 202 according to the feedback of the main adjusting loop, and the flow rate of the liquid supplied to the liquid storage tank 300 by the liquid supply device 600 is changed in real time through the control valve 500, so that the liquid level in the liquid storage tank 300 is always kept in a proper range.
Preferably, the secondary regulating circuit further generates a secondary circuit interference signal during operation, and the secondary circuit interference signal and the flow rate of the liquid jointly act on a liquid flow rate value during the liquid supply device 600 supplies the liquid to the liquid storage tank 300. Due to the existence of the auxiliary regulating loop, the effect of advanced control on an auxiliary loop interference signal entering the auxiliary regulating loop is achieved, so that the influence of the auxiliary loop interference signal on the liquid level in the liquid storage tank 300 is reduced; thereby still further maintaining the liquid level in the tank 300 within a suitable range at all times.
Preferably, the flow measuring device further comprises an alarm device 400, wherein the alarm device 400 is connected to an output end of the flow transmitter 201, receives the liquid flow value sent by the flow transmitter 201, and when the liquid flow value is greater than an alarm preset value, the alarm device 400 sends an alarm. Therefore, when the liquid flow value is greater than the alarm preset value, the alarm device 400 can send an alarm to prompt an operator to detect the condition of the machine in time, so that the liquid leakage is avoided. Further, in one preferred embodiment, the alarm device 400 is an integral alarm, and the alarm preset value is set as a preset proportion of the liquid storage tank 300. The integral alarm can well receive the liquid flow value sent by the flow transmitter 201, and sends out an alarm to prompt an operator to detect the condition of the machine in time when the liquid flow value exceeds the preset proportion of the liquid storage tank 300 in unit time, so that the condition of liquid leakage is avoided.
Preferably, the system further comprises a machine table digital display 104, and the machine table digital display 104 is used for receiving and displaying the control value. Therefore, the operator can know the liquid level value in real time conveniently. The digital display 104 is connected to the liquid level controller 102, and the connection mode includes: electrical connection/wireless connection.
Preferably, the control valve 500 includes: regulating the valve/frequency converter. The regulating valve and the frequency converter can receive a control instruction sent by the flow controller 202, and can execute the control instruction, so as to control the liquid flow value of the liquid supplied to the liquid storage tank 300 by the liquid supply device 600 in time, and ensure that the liquid level in the liquid storage tank 300 is always kept in a proper range.
Example two
The embodiment provides a refrigerator, the refrigerator comprises the automatic liquid level control system in any one of the above embodiments, and the refrigerator provided by the utility model and the automatic liquid level control system provided by the utility model belong to the same utility model concept, so that the refrigerator at least has the same beneficial effects, and the details are not repeated.
In addition, the functional modules in the embodiments herein may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part. In addition, it is to be noted that the terms "first", "second", "third", and the like in the specification are used only for distinguishing the respective components in the description, unless otherwise specified or indicated. Elements, steps, etc., rather than representing logical or sequential relationships between various components, elements, steps, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example.
In summary, the present invention provides an automatic liquid level control system for a refrigerator, the refrigerator is provided with a liquid storage tank 300 communicated with a liquid supply device 600, the automatic liquid level control system is arranged between the liquid supply device 600 and the liquid storage tank 300, and the automatic liquid level control system comprises: a primary regulation loop, a secondary regulation loop, and a control valve 500; the secondary regulating circuit is used for detecting a liquid flow value in the process of conveying liquid to the liquid storage tank 300 by the liquid supply device 600; the main regulating loop is used for detecting a liquid level value in the liquid storage tank 300, comparing and calculating the liquid level value with a liquid level preset value, and determining a control value; the secondary regulating loop is also used for determining a flow control instruction according to the control value and the liquid flow value; the control valve 500 controls the flow of the liquid according to the flow control command. According to the automatic liquid level control system provided by the utility model, the main regulating circuit, the auxiliary regulating circuit and the control valve 500 are added, so that the automatic liquid level control system forms a closed-loop control circuit.
Because the refrigerator provided by the utility model and the automatic liquid level control system provided by the utility model belong to the same utility model concept, the refrigerator at least has the same beneficial effects, and the repeated description is omitted.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. An automatic liquid level control system for a refrigerating machine, wherein a liquid storage tank communicated with a liquid supply device is arranged in the refrigerating machine, the automatic liquid level control system is arranged between the liquid supply device and the liquid storage tank, and the automatic liquid level control system comprises: a main regulating loop, an auxiliary regulating loop and a control valve;
the auxiliary regulating circuit is used for detecting a liquid flow value in the process that the liquid supply device supplies liquid to the liquid storage tank;
the main regulating loop is used for detecting a liquid level value in the liquid storage tank, comparing and calculating the liquid level value with a liquid level preset value and determining a control value;
the secondary regulating loop is also used for determining a flow control instruction according to the control value and the liquid flow value;
and the control valve controls the flow of the liquid according to the flow control instruction.
2. The automatic liquid level control system of claim 1, wherein said primary regulation loop comprises a liquid level transmitter and a liquid level controller;
the liquid level transmitter is used for detecting the liquid level value in the liquid storage tank and sending the liquid level value to the liquid level controller;
and the liquid level controller compares and calculates the received liquid level value and the liquid level preset value to determine the control value.
3. An automatic liquid level control system as claimed in claim 2, wherein said main regulation loop also generates a main loop disturbance signal during operation, said main loop disturbance signal acting together with said flow control command on the level value in said tank.
4. An automatic liquid level control system as claimed in claim 3, wherein said secondary regulation loop comprises a flow transmitter and a flow controller;
the input end of the liquid level transmitter is connected with the liquid storage tank, the output end of the liquid level transmitter is connected with the input end of the liquid level controller, and the output end of the liquid level controller is connected with the input end of the flow controller;
the input end of the flow transmitter is connected with the output end of the control valve, and the output end of the flow transmitter is connected with the input end of the flow controller;
the flow transmitter is used for detecting a liquid flow value in the process that the liquid supply device conveys liquid to the liquid storage tank and sending the liquid flow value to the flow controller;
the flow controller is used for comparing and calculating the control value and the liquid flow value to determine the flow control instruction.
5. The automatic liquid level control system as claimed in claim 4, wherein the secondary regulation circuit further generates a secondary circuit disturbance signal during operation, and the secondary circuit disturbance signal and the flow rate of the liquid act together on a liquid flow rate value during the liquid supply device supplying the liquid to the tank.
6. The automatic liquid level control system as claimed in claim 4, further comprising an alarm device, wherein said alarm device is connected to an output end of said flow transmitter and receives said liquid flow value from said flow transmitter, and when said liquid flow value is greater than a preset alarm value, said alarm device gives an alarm.
7. The automatic liquid level control system of claim 6, wherein the alarm device is an integral alarm, and the alarm preset value is set to a preset proportion of the liquid storage tank.
8. The automatic liquid level control system of claim 1, further comprising a digital display for receiving and displaying the control value.
9. An automatic liquid level control system as claimed in claim 1, wherein said control valve comprises: regulating the valve/frequency converter.
10. A freezer comprising an automatic level control system according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220128369.0U CN216745159U (en) | 2022-01-18 | 2022-01-18 | Liquid level automatic control system and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220128369.0U CN216745159U (en) | 2022-01-18 | 2022-01-18 | Liquid level automatic control system and refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216745159U true CN216745159U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220128369.0U Active CN216745159U (en) | 2022-01-18 | 2022-01-18 | Liquid level automatic control system and refrigerator |
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| Country | Link |
|---|---|
| CN (1) | CN216745159U (en) |
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2022
- 2022-01-18 CN CN202220128369.0U patent/CN216745159U/en active Active
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Address after: 510000 No. 28, Fenghuang fifth road, Huangpu District, Guangzhou, Guangdong Patentee after: Yuexin Semiconductor Technology Co.,Ltd. Address before: 510000 No. 28, Fenghuang fifth road, Huangpu District, Guangzhou, Guangdong Patentee before: Guangzhou Yuexin Semiconductor Technology Co.,Ltd. |
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