Cooling pump protection method, cooling unit, equipment, medium and product

Abstract

The invention discloses a cooling pump protection method, a cooling unit, equipment, a medium and a product, and the cooling pump protection method comprises the steps that the rotating speed n of a cooling pump is obtained, the theoretical pressure difference range corresponding to the cooling pump is obtained based on the rotating speed n, and the theoretical pressure difference range is the range corresponding to the difference value between the theoretical water outlet pressure and the theoretical water return pressure of the cooling pump; and the actual water outlet pressure and the actual water return pressure of the current cooling pump are obtained to determine the actual pressure difference, whether the actual pressure difference is within the corresponding theoretical pressure difference range or not is judged, if not, the pump protection instruction is executed, and if yes, the pump protection instruction is not executed. According to the cooling pump protection method, whether the cooling pump is abraded or abnormal or not can be determined according to comparison of the actual pressure difference range and the theoretical pressure difference range, the mode is simple and direct, damage to the cooling pump due to time delay is avoided, and the cooling pump can be reliably and effectively protected.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling pump protection, and more specifically, to a cooling pump protection method, cooling unit, equipment, medium and product. Background Art

[0002] The cooling pump is a device used to transport liquids in high-pressure operating systems. It is widely used in industrial and civil fields. The reliable operation of the cooling pump has an important impact on its operating effect. In the related technology, the cooling pump is equipped with a temperature acquisition module and a drive mechanism. The cooling pump is driven by the drive mechanism to operate and protect according to the feedback value of the temperature acquisition module.

[0003] In the process of implementing the present invention, the inventors found that the prior art has at least the following problems:

[0004] The temperature acquisition module has a certain delay defect. After being processed by the driver module, it sends instructions. During this process, the water pump may have been worn or abnormal. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a cooling pump protection method, which can determine whether the cooling pump is worn or abnormal based on the comparison between the actual pressure difference and the theoretical pressure difference range. The method is relatively simple and direct, effectively avoiding damage to the cooling pump due to delay, and can reliably and effectively protect the cooling pump. Another purpose of the present invention is to provide a cooling unit, equipment, medium and product.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A cooling pump protection method, comprising:

[0008] Obtaining a rotation speed n of the cooling pump, and obtaining a theoretical pressure difference range corresponding to the cooling pump based on the rotation speed n, wherein the theoretical pressure difference range is a range corresponding to a difference between a theoretical water outlet pressure and a theoretical water return pressure of the cooling pump;

[0009] The actual water outlet pressure and the actual return water pressure of the current cooling pump are obtained to determine the actual pressure difference, and it is judged whether the actual pressure difference is within the corresponding theoretical pressure difference range. If yes, a pump protection instruction is executed; if yes, the pump protection instruction is not executed.

[0010] Preferably, the determining whether the actual pressure difference is within the corresponding theoretical pressure difference range includes:

[0011] Based on the rotation speed of the cooling pump, it is determined whether the cooling pump is in the speed change stage. If yes, it is determined whether the actual pressure difference is within the corresponding theoretical pressure difference range. If no, it is not determined.

[0012] Preferably, the executing pump protection instruction includes:

[0013] A pump shutdown command and / or a pump restart command is executed to protect the cooling pump, and a warning operation is performed when it is determined that the cooling pump is short of fluid based on the number N of the pump shutdown command and / or the pump restart command.

[0014] Preferably, obtaining the actual water outlet pressure and the actual water return pressure of the cooling pump includes:

[0015] Detection information of a first pressure sensor at the water outlet end of the cooling pump and a second pressure sensor at the water return end of the cooling pump is obtained, and actual water outlet pressure and actual water return pressure are determined based on the detection information.

[0016] Preferably, judging whether the actual pressure difference is within the corresponding theoretical pressure difference range comprises: determining a corresponding speed gradient based on the speed n of the cooling pump, and determining two boundary values ​​of the corresponding theoretical pressure difference range based on the speed gradient;

[0017] When the actual pressure difference is less than two boundary values ​​at the same time, the pump protection instruction is executed.

[0018] Preferably, determining a speed gradient corresponding to the speed n based on the speed n of the cooling pump, and determining two boundary values ​​of the corresponding theoretical pressure difference range based on the speed gradient include:

[0019] Based on the speed n of the cooling pump, judging whether the speed n satisfies a first speed gradient a<n≤b, and if so, determining two boundary range values ​​of the theoretical pressure difference as A and B based on the first speed gradient;

[0020] or, judging whether the speed n satisfies a second speed gradient b<n≤c based on the speed n of the cooling pump, and if so, determining two boundary range values ​​of the theoretical pressure difference as B and C based on the second speed gradient;

[0021] or, judging whether the speed n satisfies a third speed gradient c<n≤d based on the speed n of the cooling pump, and if so, determining two boundary range values ​​of the theoretical pressure difference as C and D based on the second speed gradient;

[0022] Among them, a<b<c<d, A<B<C<D.

[0023] The present invention also provides a cooling unit, comprising:

[0024] Cooling pump;

[0025] A control mechanism is signal-connected to the cooling pump and is used to execute any of the cooling pump protection methods described above.

[0026] The present invention also provides a device, comprising:

[0027] Memory for storing computer programs;

[0028] A processor is used to execute the computer program to implement the steps of the cooling pump protection method as described in any one of the above.

[0029] The present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the cooling pump protection method as described in any one of the above are implemented.

[0030] The present invention also provides a computer program product, comprising a computer program / instruction, which implements the steps of any one of the above-mentioned cooling pump protection methods when executed by a processor.

[0031] The cooling pump protection method provided by the present invention includes obtaining the rotational speed n of the cooling pump, and obtaining the corresponding theoretical pressure difference range based on the rotational speed n of the cooling pump, wherein the specific theoretical pressure difference range is the range corresponding to the difference between the theoretical water outlet pressure and the theoretical return water pressure of the cooling pump; obtaining the actual water outlet pressure and the actual return water pressure of the current cooling pump and determining the actual pressure difference, and judging whether the actual pressure difference is within the theoretical pressure difference range. If the result is no, it means that cavitation or idling may occur in the cooling pump. At this time, the control executes the pump protection instruction to reliably protect the cooling pump; if the result is yes, it means that the cooling pump is operating normally and there is no need to execute the pump protection instruction.

[0032] The cooling pump protection method provided by the present invention has at least the following beneficial effects:

[0033] By determining the actual water outlet pressure and actual return water pressure corresponding to a certain speed of the cooling pump, the actual pressure difference can be determined in a timely and effective manner. Based on the comparison between the actual pressure difference and the theoretical pressure difference range, it can be determined whether the cooling pump is worn or abnormal, and relevant operations can be taken in a timely manner. The method of obtaining the water outlet and return water pressures is relatively simple and direct, which can avoid damage to the cooling pump due to delays and can provide reliable and effective protection for the cooling pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0035] Figure 1 A flow chart of the cooling pump protection method provided by the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of the cooling unit provided by the present invention;

[0037] Figure 3 This is a schematic diagram of the structure of the device provided by the present invention.

[0038] Figure 1-Figure 3 , the reference numerals include:

[0039] 1-Cooling pump; 2-First pressure sensor; 3-Second pressure sensor; 4-Heat exchanger; 5-Circulation pipeline;

[0040] 60 - memory; 61 - processor; 601 - computer program; 602 - operating system; 603 - data; 62 - display screen; 63 - input and output interface; 64 - communication interface; 65 - power supply; 66 - communication bus. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The core of the present invention is to provide a cooling pump protection method, which can determine whether the cooling pump is worn or abnormal based on the comparison between the actual pressure difference and the theoretical pressure difference range. The method is relatively simple and direct, avoiding damage to the cooling pump due to delay, and can reliably and effectively protect the cooling pump. Another core of the present invention is to provide a cooling unit, equipment, medium and product.

[0043] The cooling pump protection method provided by the present invention is used for reliable protection of the cooling pump during operation, specifically to avoid cavitation or idling of the cooling pump and ensure the service life of the cooling pump. The cavitation of the cooling pump is specifically the process of formation, development and collapse of vapor or gas bubbles inside the liquid or on the liquid-solid interface when the local pressure inside the pump is reduced to a temperature close to or lower than the liquid vaporization pressure at that temperature; the idling of the cooling pump is specifically the situation that no liquid passes through the pump body or a lot of air enters during the operation of the pump.

[0044] The cooling pump 1 is specifically a structure for pumping liquid, and the liquid can be water or other forms of cooling liquid, which can provide operating power for the circulation of the cooling liquid.

[0045] Please refer to Figure 1The protection method of the cooling pump specifically includes obtaining the rotation speed n of the cooling pump 1, and obtaining the corresponding theoretical pressure difference range of the cooling pump 1 based on the rotation speed n. The theoretical pressure difference range is the range corresponding to the difference between the theoretical outlet water pressure and the theoretical return water pressure of the cooling pump 1. Specifically, how to obtain the corresponding theoretical pressure difference range through the rotation speed n of the cooling pump 1, one way is to directly retrieve the theoretical pressure difference range through the database, and another way is to obtain the corresponding theoretical pressure difference range through calculation by a calculation element.

[0046] For the specific implementation method of directly retrieving the theoretical pressure difference range from the database, the corresponding sequence of speed n-theoretical pressure difference range can be directly stored in the database. When the theoretical pressure difference range corresponding to the speed n is needed, it can be directly retrieved without further processing, thereby ensuring operating efficiency and reliable and effective protection of the cooling pump.

[0047] After retrieving the theoretical pressure difference range corresponding to the speed n, the actual pressure difference is determined by obtaining the actual water outlet pressure and the actual return water pressure of the current cooling pump 1, and judging whether the actual pressure difference is within the corresponding theoretical pressure difference range. If the result is no, the pump protection instruction is executed, and if the result is yes, the pump protection instruction is not executed. Based on the fact that the result is no, it means that there is a great possibility of idling or cavitation, so relevant measures need to be taken to protect the cooling pump 1. The specific pump protection instruction can be shutdown, restart or regulation, which can protect the cooling pump 1 in a timely and effective manner, avoid pump damage caused by untimely monitoring, and ensure the service life and reliable operation effect of the cooling pump 1. Based on the fact that the result is no, it means that the cooling pump 1 itself is in normal operating state and there is no abnormality, so there is no need to execute the pump protection instruction.

[0048] The actual outlet water pressure and the actual return water pressure of the current cooling pump 1 can be obtained in various ways, such as through a pressure sensor or a pressure gauge, which can facilitate automatic acquisition of pressure values.

[0049] In the above process, whether the cooling pump 1 needs to be protected is determined based on the detection of the actual water outlet pressure and the actual return water pressure of the cooling pump 1. The speed of signal transmission can be guaranteed by pressure detection, and the actual working condition of the cooling pump 1 can be directly and effectively obtained, thereby ensuring timely and effective protection of the cooling pump 1, ensuring the service life of the cooling pump 1, and ensuring the reliable and effective use of the cooling pump 1.

[0050] In a specific embodiment, determining whether the actual pressure difference is within the corresponding theoretical pressure difference range includes: determining whether the cooling pump 1 is in the frequency increase stage based on the rotation speed of the cooling pump 1, and if so, executing the operation of determining whether the actual pressure difference is within the corresponding theoretical pressure difference range, and if so, not executing the operation.

[0051] The cooling pump protection method provided by the present invention is specifically based on whether the water inlet and return water pressure difference of the actual cooling pump is within the theoretical pressure difference range to control whether to execute the pump protection instruction. In the actual operation of the cooling pump 1, since the cooling pump 1 itself may have two or more gears, a speed change stage will appear when switching gears. The speed change stage here refers to the process of switching the frequency of the cooling pump between different speeds. This process is usually to meet different cooling needs. For example, in order to meet better cooling needs, the speed needs to be increased. Alternatively, the speed change stage refers to the process of the cooling pump 1 starting from the beginning to reaching a certain speed. This process is to complete the switching of the cooling pump 1 from shutdown to startup.

[0052] In order to avoid misoperation and incorrect operating instructions during the speed change stage, which will affect the operation process, before judging the relationship between the actual pressure difference and the theoretical pressure difference range, first judge whether the cooling pump 1 is in the speed change stage. If so, no judgment is required, and no pump protection instruction operation needs to be executed; if not, it means that the cooling pump 1 is at a relatively stable speed. At this time, it is sufficient to execute the judgment and pump protection instruction operation to avoid invalid operation or component damage due to misjudgment and ensure the accuracy of the execution of the pump protection instruction.

[0053] How to determine whether the cooling pump 1 is in the speed change stage or a relatively stable speed can be determined based on the change in speed. If the speed increases or decreases, it means that it is in the speed change stage. If the speed fluctuates, such as fluctuating up and down, instead of increasing or decreasing, it means that it is in a relatively stable speed. Correspondingly, judgment and pump protection instruction operations can be performed at this time.

[0054] In a specific embodiment, executing the pump protection instruction includes: executing a pump shutdown instruction and / or a pump restart instruction to protect the cooling pump 1, and performing an early warning operation when it is determined that the cooling pump 1 is short of liquid based on the number N of pump shutdown instructions and / or pump restart instructions.

[0055] The pump protection instruction may specifically be in any form of a pump shutdown instruction, a pump restart instruction, a pump shutdown instruction and a pump restart instruction.

[0056] In a specific embodiment, the pump protection instruction includes a pump shutdown instruction and a pump restart instruction. When it is determined that the actual pressure difference is outside the theoretical pressure difference range, it indicates that cavitation or idling may exist, and the cooling pump 1 needs to be shut down first. At the same time, a prompt alarm signal will be fed back. Based on this alarm signal, the cooling pump 1 is controlled to restart to restart the cooling pump 1.

[0057] If the pump shutdown and / or restart operation instructions are issued N times in succession, it will be determined that the actual pressure difference of the cooling pump 1 is not within the theoretical pressure difference range due to a lack of liquid. At this time, an alarm lock signal will be fed back. Based on this alarm lock information, the operation of the cooling pump 1 can no longer be directly controlled, and manual intervention is required for maintenance to ensure the reliable operation of the cooling pump 1.

[0058] The specific shutdown and / or restart operation instructions are continuously reached N times, which may refer to the intermittent cumulative N times within a certain period of time, or may refer to the continuous N times. Intermittent means that there is a period of time when the cooling pump 1 operates normally between two shutdown and / or restart operation instructions.

[0059] The specific number of times N can be determined in combination with the actual configuration of the cooling pump 1 or the actual operation scenario, and no excessive restrictions are imposed here.

[0060] In a specific embodiment, obtaining the actual outlet water pressure and the actual return water pressure of the cooling pump 1 includes: obtaining detection information of the first pressure sensor 2 at the outlet water end of the cooling pump 1 and the second pressure sensor 3 at the return water end of the cooling pump 1, and determining the actual outlet water pressure and the actual return water pressure based on the detection information. That is, the liquid pressure is detected by the first pressure sensor 1 and the second pressure sensor 2, and the actual pressure difference when the cooling pump 1 is working is quickly determined according to the detection information, so as to quickly take relevant operations and avoid damage to the cooling pump 1 due to signal delay.

[0061] The sensitive elements in the first pressure sensor and the second pressure sensor can be specifically elements that respond quickly to pressure changes, such as strain gauges and piezoelectric crystals, which can quickly convert pressure changes into changes in physical quantities and then form electrical signals. The change in pressure in this process will directly form a rapid change in the electrical signal, and the signal response is rapid. The signal transmission speed of the pressure sensor itself is rarely affected by the physical properties of the measured liquid. Therefore, the feedback of the return water pressure and the outlet water pressure is direct and rapid, and the working state of the cooling pump 1 can be determined in time and accurately. If an abnormality occurs, it can be discovered in time and the pump protection instruction operation can be quickly taken to ensure the reliable operation of the cooling pump 1. The physical properties of the liquid measured in the above process, such as heat capacity, thermal conductivity, etc.

[0062] In addition, the signals output by the pressure sensor are mostly analog voltage or current signals, which can be directly collected and processed, and some pressure sensors use digital communication protocols, such as the Sent protocol Single Edge Nibble Transmission, a one-way communication protocol, which further improves the signal transmission speed and anti-interference ability. That is, the use of pressure sensors can effectively reduce the damage of the cooling pump 1 due to signal delay.

[0063] In a specific implementation, determining whether the actual pressure difference is within the corresponding theoretical pressure difference range includes: determining a corresponding speed gradient based on the speed n of the cooling pump 1, and determining two boundary values ​​of the corresponding theoretical pressure difference range based on the speed gradient. When the actual pressure difference is less than the two boundary values ​​at the same time, executing a pump protection instruction.

[0064] The specific speed gradient means that the speed n is within a certain range, and the certain range here refers to a value within the allowable variation range of the theoretical speed.

[0065] For example, if the speed gradient corresponding to the speed n is n1<n<n2, then the two boundary values ​​of the corresponding theoretical pressure difference range, namely the two theoretical pressure difference values ​​corresponding to n1 and n2, are determined based on the speed gradient. The judgment is based on whether the actual pressure difference obtained is less than the two theoretical pressure difference values ​​at the same time. If so, it means that the pump may have cavitation or idling, and the pump protection instruction is executed.

[0066] In a specific embodiment, the speed gradient corresponding to the speed n is determined based on the speed n of the cooling pump 1, and the two boundary values ​​of the corresponding theoretical pressure difference range are determined based on the speed gradient: judging whether the speed n satisfies the first speed gradient a<n≤b based on the speed n of the cooling pump 1, and if so, determining the two boundary range values ​​of the theoretical pressure difference as A and B based on the first speed gradient. If the difference between the inlet pressure and the outlet pressure of the cooling pump 1 is less than the B value and greater than the A value, it is determined that the cooling pump 1 is in good operating condition and the cooling pump 1 is operating normally; if the difference between the inlet pressure and the outlet pressure of the cooling pump 1 is less than B and less than A, the cooling pump 1 may be in a cavitation state or an idling state, and a pump protection instruction needs to be executed.

[0067] In a specific implementation, it is determined based on the speed n of the cooling pump 1 whether the speed n satisfies the second speed gradient b<n≤c, and if so, two boundary range values ​​of the theoretical pressure difference are determined based on the second speed gradient as B and C. If the difference between the inlet pressure and the outlet pressure of the cooling pump 1 is less than the C value and greater than the B value, it is determined that the cooling pump 1 is in good operating condition and the cooling pump 1 is operating normally; if the difference between the inlet pressure and the outlet pressure of the cooling pump 1 is less than C and less than B, the cooling pump 1 may be in a cavitation state or an idling state, and a pump protection instruction needs to be executed.

[0068] In a specific implementation, it is determined based on the speed n of the cooling pump 1 whether the speed n satisfies the third speed gradient c<n≤d, and if so, two boundary range values ​​of the theoretical pressure difference are determined based on the second speed gradient as C and D. If the difference between the inlet pressure and the outlet pressure of the cooling pump 1 is less than the D value and greater than the C value, it is determined that the cooling pump 1 is in good operating condition and the cooling pump 1 is operating normally; if the difference between the inlet pressure and the outlet pressure of the cooling pump 1 is less than D and less than C, the cooling pump 1 may be in a cavitation state or an idling state, and a pump protection instruction needs to be executed.

[0069] Among them, in the above three specific implementations, a<b<c<d, A<B<C<D.

[0070] In addition to the above pump protection method, the present invention also provides a cooling unit, the cooling unit comprising:

[0071] Cooling pump 1;

[0072] The control mechanism is signal-connected to the cooling pump 1 and is used to execute the cooling pump protection method described in any of the above embodiments.

[0073] Please refer to Figure 2 The cooling unit also includes a heat exchanger 4 and a circulation pipeline 5. The cooling pump 1 provides circulating cooling water to the heat exchanger 4 for heat exchange to cool the cooling unit. The cooling water of the cooling pump 1 can be obtained through a water tank or a process water system without limitation.

[0074] The specific control mechanism can issue a pump protection instruction to control the shutdown / restart of the cooling pump 1 to achieve effective protection of the cooling pump 1.

[0075] The present invention further provides a device, which specifically includes: a memory 60 for storing a computer program; and a processor 61 for implementing the steps of the pump protection method described in the above embodiment when executing the computer program.

[0076] The device provided in this embodiment may include but is not limited to a smart phone, a tablet computer, a laptop computer or a desktop computer.

[0077] Please refer to Figure 3, the processor 61 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 61 may be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), and programmable logic array (PLA). The processor 61 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a central processing unit (CPU); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor 61 may be integrated with a graphics processing unit (GPU), and the GPU is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 61 may also include an artificial intelligence (AI) processor, which is used to process computing operations related to machine learning.

[0078] The memory 60 may include one or more computer-readable storage media, which may be non-transitory. The memory 60 may also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In this embodiment, the memory 60 is at least used to store the following computer program 601, wherein the computer program 601, after being loaded and executed by the processor 61, can implement the relevant steps of the cooling pump protection method disclosed in any of the aforementioned embodiments. In addition, the resources stored in the memory 60 may also include an operating system 602 and data 603, etc., and the storage method may be temporary storage or permanent storage. Among them, the operating system 602 may include Windows, Unix, Linux, etc.

[0079] In some embodiments, the device may further include a display screen 62 , an input / output interface 63 , a communication interface 64 , a power supply 65 , and a communication bus 66 .

[0080] Those skilled in the art will understand that Figure 3 The structure shown in the figure does not constitute a limitation of the device, and may include more or fewer components than shown.

[0081] It is understandable that if the cooling pump protection method in the above embodiment is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the current technology, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium to execute all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), electrically erasable programmable ROM, register, hard disk, removable disk, CD-ROM, magnetic disk or optical disk, etc. Various media that can store program codes.

[0082] Based on this, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the cooling pump protection method described above are implemented.

[0083] The above is a detailed introduction to a cooling pump protection method, cooling unit, equipment, medium and product provided by an embodiment of the present invention. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0084] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0085] The above is a detailed introduction to a cooling pump protection method, cooling unit, equipment, medium and product provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0086] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0087] The above is a detailed introduction to a cooling pump protection method, cooling unit, equipment, medium and product provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A cooling pump protection method, characterized in that: include: Obtaining a rotation speed n of the cooling pump (1), and obtaining a theoretical pressure difference range corresponding to the cooling pump (1) based on the rotation speed n, the theoretical pressure difference range being a range corresponding to a difference between a theoretical water outlet pressure and a theoretical water return pressure of the cooling pump (1); The actual water outlet pressure and the actual water return pressure of the current cooling pump (1) are obtained to determine the actual pressure difference, and it is judged whether the actual pressure difference is within the corresponding theoretical pressure difference range. If yes, a pump protection instruction is executed; if yes, the pump protection instruction is not executed.

2. The cooling pump protection method according to claim 1, characterized in that: The determining whether the actual pressure difference is within the corresponding theoretical pressure difference range includes: Based on the rotation speed of the cooling pump (1), it is determined whether the cooling pump (1) is in a speed change phase; if not, an operation is performed to determine whether the actual pressure difference is within the corresponding theoretical pressure difference range; if not, the operation is not performed.

3. The cooling pump protection method according to claim 1, characterized in that: The execution of the pump protection instruction comprises: A pump shutdown instruction and / or a pump restart instruction is executed to protect the cooling pump (1), and a warning operation is performed when it is determined that the cooling pump (1) is short of fluid based on the number N of pump shutdown instructions and / or pump restart instructions.

4. The cooling pump protection method according to claim 1, characterized in that: Obtaining the actual water outlet pressure and the actual water return pressure of the cooling pump (1) comprises: Detection information of a first pressure sensor (2) at the water outlet of the cooling pump (1) and a second pressure sensor (3) at the water return end of the cooling pump (1) is obtained, and actual water outlet pressure and actual water return pressure are determined based on the detection information.

5. The cooling pump protection method according to claim 1, characterized in that: Determining whether the actual pressure difference is within the corresponding theoretical pressure difference range comprises: determining a corresponding speed gradient based on a speed n of the cooling pump (1), and determining two boundary values ​​of the corresponding theoretical pressure difference range based on the speed gradient; When the actual pressure difference is less than two boundary values ​​at the same time, the pump protection instruction is executed.

6. The cooling pump protection method according to claim 5, characterized in that: Based on the rotation speed n of the cooling pump (1), a rotation speed gradient corresponding to the rotation speed n is determined. Based on the rotation speed gradient, two boundary values ​​of the corresponding theoretical pressure difference range are determined, including: Based on the rotation speed n of the cooling pump (1), judging whether the rotation speed n satisfies a first rotation speed gradient a<n≤b, and if so, determining two boundary range values ​​of the theoretical pressure difference as A and B based on the first rotation speed gradient; or, based on the rotation speed n of the cooling pump (1), determining whether the rotation speed n satisfies a second rotation speed gradient b<n≤c, and if so, determining two boundary range values ​​of the theoretical pressure difference as B and C based on the second rotation speed gradient; or, based on the rotation speed n of the cooling pump (1), determining whether the rotation speed n satisfies a third rotation speed gradient c<n≤d, and if so, determining two boundary range values ​​of the theoretical pressure difference as C and D based on the second rotation speed gradient; Among them, a<b<c<d, A<B<C<D.

7. A cooling unit, characterized in that: include: Cooling pump (1); A control mechanism, signal-connected to the cooling pump (1) and used to execute the cooling pump protection method according to any one of claims 1 to 6.

8. A device, characterized in that include: A memory (60) for storing a computer program (601); A processor (61) is used to execute the computer program (601) to implement the steps of the cooling pump protection method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program (601), and when the computer program (601) is executed by the processor (61), the steps of the cooling pump protection method according to any one of claims 1 to 6 are implemented.

10. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor (61), the steps of the cooling pump protection method according to any one of claims 1 to 6 are implemented.

Images