Intelligent water replenishing method and system for water tank of transformer gas-phase drying equipment

Abstract

The invention relates to the technical field of design of a water tank intelligent water supplementing scheme for transformer gas phase drying equipment, in particular to a water tank intelligent water supplementing method and system for the transformer gas phase drying equipment. Comprising a cooling water tank, a water chilling unit, a standby pool and an electric control valve, the water level in the cooling water tank is periodically monitored through a water level sensing unit, and a control module controls the on-off state of the electric control valve according to water level data so as to automatically adjust the water level of the water tank. The water level sensing unit comprises a water level sensing circuit and an MCU main control unit, and part of the circuit adopts a Hall element to improve the measurement precision. When the water level of the cooling water tank is lower than a first preset threshold value, the electric control valve is automatically opened for water replenishing; and when the water level is higher than the first or second preset threshold value, the electric control valve is closed, the remarkable beneficial effects are achieved in the aspects of improving the water supplementing precision, enhancing the intelligent and automatic degree, guaranteeing the gas phase drying quality efficiency of the transformer, improving the reliability and safety of the system and the like, and great practical value and application prospects are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent water replenishment scheme design for water tanks of transformer gas-phase drying equipment, and specifically relates to a method and system for intelligent water replenishment of water tanks for transformer gas-phase drying equipment. Background Art

[0002] During the transformer gas-phase drying process, the stable supply of the cooling water source is crucial, which is directly related to the quality and efficiency of the drying operation. However, there are many problems that need to be solved currently.

[0003] (I) Limitations of existing water replenishment methods Traditional manual water replenishment methods are widely used in this field, but many drawbacks have emerged. It requires staff to regularly check the water level in the water tank and then manually turn on the water replenishment equipment to inject water into the water tank according to the actual situation. This mode highly depends on the experience and responsibility of the staff. If the staff is negligent or the inspection interval is too long, it may lead to failure to replenish water in time when the water level in the water tank drops, affecting the normal operation of the transformer gas-phase drying. For example, once the water level in the water tank is too low and the cooling water supply is insufficient, the temperature rise control during the transformer gas-phase drying process will deviate, resulting in poor drying effect and even possibly damaging the internal insulation material of the transformer.

[0004] In addition, there are also great difficulties in controlling the water replenishment volume during manual operation. Due to the lack of precise measurement and control means, the water replenishment volume is likely to be inaccurate. If the water replenishment volume is too small, it cannot meet the continuous demand for transformer gas-phase drying. If it is too much, it will cause waste of water resources and may bring safety hazards due to water tank overflow, such as causing surrounding water accumulation, equipment short circuit and other problems.

[0005] (II) Influence on the transformer gas-phase drying process Transformer gas-phase drying is a process with relatively strict requirements for conditions such as temperature and humidity. An inaccurate water replenishment method for the water tank will disrupt this balance and have a serious impact on the drying process. When the cooling water supply is insufficient or the water replenishment volume fluctuates greatly, the heat exchange process inside the transformer is difficult to reach an ideal state, and it is impossible to effectively dissipate the heat generated during the drying process. This will not only prolong the drying time and increase production costs, but more importantly, it may lead to unstable insulation performance of the transformer, reducing the service life and operation reliability of the transformer.

[0006] Moreover, the instability of the existing water replenishment method is also not in line with the requirements of large-scale and high-efficiency production in modern industry. In modern industrial production, the requirements for production efficiency and product quality consistency are extremely high. Traditional water replenishment methods are difficult to meet this demand and cannot ensure that each transformer gas-phase drying process is carried out under stable and precise water source supply conditions, thus it is difficult to ensure the uniformity of product quality.

[0007] In summary, there are many deficiencies in the existing water replenishment method for the water tank of the transformer gas-phase drying equipment, which can no longer meet the growing production requirements of refinement and high efficiency. There is an urgent need for an intelligent and precisely controllable water tank replenishment system and method to solve these problems.

[0008] Therefore, the existing technology still needs to be further developed. SUMMARY OF THE INVENTION

[0009] The purpose of the present invention is to overcome the above technical deficiencies and provide a water tank intelligent replenishment method and system for a transformer gas-phase drying equipment to solve the problems existing in the prior art.

[0010] To achieve the above technical purpose, according to the first aspect of the present invention, a water tank intelligent replenishment system for a transformer gas-phase drying equipment is provided, including: A cooling water tank and a chiller, the cooling water tank and the chiller are connected through a water circuit, and the cooling water tank and the chiller are used to provide a cooling water source for the gas-phase drying process of the transformer; A standby water tank, the standby water tank and the cooling water tank are connected through a water replenishment pipeline, and an electric control valve is arranged in the water replenishment pipeline. The standby water tank is used to replenish water for the cooling water tank when the electric control valve is opened; An acquisition module, configured to acquire the water level data in the water tank at a preset period by using a water level sensing unit arranged in the water tank; A control module, configured to control the action state of the electric control valve arranged in the water replenishment pipeline according to the water level data in the water tank.

[0011] Specifically, the water level sensing unit includes: A water level sensing circuit and an MCU main control unit. The MCU main control unit includes an AD detection port. A plurality of water level sensing circuits are arranged, and at least two water level sensing circuits share the same AD detection port. The plurality of water level sensing circuits are respectively set for different water levels.

[0012] Specifically, among the plurality of water level sensing circuits, at least one water level sensing circuit includes: A Hall element, and an isolation diode connected to the output end of the Hall element through a voltage dividing resistor.

[0013] According to the second aspect of the present invention, a water tank intelligent replenishment method for a transformer gas-phase drying equipment is provided, including: S100. Acquire the water level data in the water tank at a preset period by using a water level sensing unit arranged in the water tank; S200. Control the action state of the electric control valve arranged in the water replenishment pipeline according to the water level data in the water tank.

[0014] Specifically, controlling the action state of the electric control valve arranged in the water replenishing pipeline according to the water level data in the water tank includes: Judging whether the water level data in the water tank is greater than or equal to a first preset threshold value, and judging whether to control the opening of the electric control valve arranged in the water replenishing pipeline according to the judgment result.

[0015] Specifically, judging whether the water level data in the water tank is greater than or equal to a first preset threshold value, and judging whether to control the opening of the electric control valve arranged in the water replenishing pipeline according to the judgment result includes: If the water level data in the water tank is greater than or equal to the first preset threshold value, controlling the electric control valve arranged in the water replenishing pipeline to close.

[0016] Specifically, judging whether the water level data in the water tank is greater than or equal to a first preset threshold value, and judging whether to control the opening of the electric control valve arranged in the water replenishing pipeline according to the judgment result includes: If the water level data in the water tank is less than the first preset threshold value, controlling the electric control valve arranged in the water replenishing pipeline to open.

[0017] Specifically, controlling the opening of the electric control valve arranged in the water replenishing pipeline includes: Using the water level sensing unit arranged in the water tank to obtain the water level data in the water tank according to a preset period, judging whether the water level data in the water tank is greater than or equal to a second preset threshold value, and judging whether to control the opening of the electric control valve arranged in the water replenishing pipeline according to the judgment result.

[0018] Specifically, judging whether the water level data in the water tank is greater than or equal to a second preset threshold value, and judging whether to control the opening of the electric control valve arranged in the water replenishing pipeline according to the judgment result includes: If the water level data in the water tank is greater than or equal to the second preset threshold value, controlling the electric control valve arranged in the water replenishing pipeline to close.

[0019] Specifically, judging whether the water level data in the water tank is greater than or equal to a second preset threshold value, and judging whether to control the opening of the electric control valve arranged in the water replenishing pipeline according to the judgment result includes: If the water level data in the water tank is less than the second preset threshold value, controlling the electric control valve arranged in the water replenishing pipeline to remain open.

[0020] Beneficial effects: The water tank intelligent water replenishing system and method for the transformer gas-phase drying equipment provided by the present invention have multiple remarkable beneficial effects compared with the traditional method, specifically as follows: First, improve the water replenishing accuracy Multi - water - level sensing circuit design: The water - level sensing unit includes multiple water - level sensing circuits, and at least two water - level sensing circuits share the same AD detection port. The multiple water - level sensing circuits are set corresponding to different water levels. This design can accurately monitor the water levels at different heights in the water tank. Compared with the traditional single - sensing method, it can obtain the water - level changes in the water tank more accurately, providing reliable data support for subsequent accurate water - replenishment control.

[0021] Intelligent threshold judgment control: The control module accurately controls the opening and closing state of the electric control valve by comparing the water - level data in the water tank with the preset first preset threshold and second preset threshold. When the water level in the water tank is lower than the first preset threshold, the electric control valve opens for water replenishment; when the water level reaches the first preset threshold, the electric control valve closes to stop water replenishment; after the electric control valve is opened, further judgment is made through the second preset threshold to ensure that the water level in the water tank can be accurately replenished to the appropriate range, avoiding the problems of over - replenishment or under - replenishment, and greatly improving the accuracy of water replenishment.

[0022] II. Enhancing the intelligence and automation level of the system Automatic data acquisition and control: The acquisition module automatically obtains the water - level data in the water tank from the water - level sensing unit according to a preset period, without the need for frequent manual monitoring. The control module automatically controls the operation of the electric control valve according to the acquired data, realizing a fully automated process from water - level data collection to water - replenishment control. This not only reduces the complexity of manual operations but also avoids problems such as untimely or inaccurate water replenishment caused by human negligence, making the entire water - replenishment process more intelligent and efficient.

[0023] Real - time dynamic adjustment: The system can dynamically adjust the opening and closing state of the electric control valve according to the real - time changes in the water level in the water tank. For example, during the gradual decline of the water level in the water tank, the system will continuously monitor and timely open the electric control valve for water replenishment according to the water - level data; when the water level rises close to the target value, it can accurately control the closing timing of the electric control valve to ensure that the water level in the water tank always remains within the appropriate range, realizing real - time dynamic and accurate control of water replenishment.

[0024] III. Ensuring the quality and efficiency of transformer gas - phase drying Avoiding failures caused by water - replenishment problems: The traditional manual water - replenishment method may lead to poor cooling effect during the transformer gas - phase drying process due to untimely water replenishment or inaccurate water - replenishment volume, and then cause problems such as too high internal temperature of the transformer and damage to insulation materials. The intelligent water - replenishment system of the present invention effectively avoids the occurrence of these problems, reduces equipment failures and production interruptions caused by water - replenishment problems, improves production efficiency, and reduces maintenance costs.

[0025] IV. Improving the reliability and safety of the system Reliability of the water level sensing unit: The water level sensing unit adopts a specific circuit structure composed of Hall elements, etc. Utilizing the sensitive characteristics of Hall elements to magnetic field changes and the isolation and protection function of isolation diodes, it can accurately and stably transmit the electrical signals corresponding to the water level changes in the water tank to the MCU main control unit. This design improves the reliability and anti-interference ability of the water level sensing unit, ensures the accuracy of the water level data obtained by the system, and provides a solid guarantee for the stable operation of the entire water replenishment system.

[0026] Preventing safety hazards such as water tank overflow: Through precise water replenishment control, the problem of water tank overflow caused by excessive water replenishment is avoided. Water tank overflow not only causes waste of water resources but may also trigger safety hazards such as surrounding water accumulation and equipment short circuit. The intelligent water replenishment system of the present invention effectively avoids these safety problems and improves the operation safety of the system.

[0027] In summary, the water tank intelligent water replenishment system and method for transformer gas-phase drying equipment of the present invention have significant beneficial effects in improving water replenishment accuracy, enhancing the degree of intelligence and automation, ensuring the quality and efficiency of transformer gas-phase drying, and improving the reliability and safety of the system, and have great practical value and application prospects. Description of the Drawings

[0028] Figure 1 is the circuit schematic diagram of a Hall element water level detection circuit provided by an embodiment of the present invention; Figure 2 is the principle block diagram of a Hall element water level detection circuit provided by an embodiment of the present invention; Figure 3 is a schematic diagram of a water tank provided by an embodiment of the present invention; Figure 4 is the schematic diagram of the water supply relationship among the cooling water tank, the chiller, and the standby water pool provided by a specific embodiment of the present invention; Figure 5 is the flow schematic diagram of the water tank intelligent water replenishment method for transformer gas-phase drying equipment provided by a specific embodiment of the present invention; Figure 6 is the system composition schematic diagram of the water tank intelligent water replenishment system for transformer gas-phase drying equipment provided by a specific embodiment of the present invention; The following reference numerals exist in the above-mentioned drawings: 31. Cooling water tank; 32. Chiller; 35. Float; 36. Rib; 37. MCU main control unit; 38. Standby water pool. Detailed Embodiments

[0029] To enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application. In addition, the directional terms mentioned in the following embodiments, such as "upper", "lower", "left", "right", etc., are only with reference to the directions of the accompanying drawings. Therefore, the directional terms used are for illustration rather than limitation of the present invention.

[0030] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0031] Please refer to Figures 1 - 6 , the present invention provides an intelligent water replenishment system for the water tank of a transformer gas-phase drying device, including: A cooling water tank 31 and a chiller 32, the cooling water tank 31 and the chiller 32 are connected by a waterway, and the cooling water tank 31 and the chiller 32 are used to provide a cooling water source for the gas-phase drying process of the transformer; A standby water tank 38, the standby water tank 38 and the cooling water tank 31 are connected by a water replenishment pipeline, and an electric control valve is arranged in the water replenishment pipeline. The standby water tank 38 is used to replenish water to the cooling water tank 31 when the electric control valve is opened; An acquisition module, configured to acquire the water level data in the cooling water tank 31 at a preset period by using a water level sensing unit arranged in the cooling water tank 31; A control module, configured to control the action state of the electric control valve arranged in the water replenishment pipeline according to the water level data in the cooling water tank 31.

[0032] Specifically, the water level sensing unit includes: A water level sensing circuit and an MCU main control unit 37. The MCU main control unit 37 includes an AD detection port. A plurality of water level sensing circuits are arranged, and at least two water level sensing circuits share the same AD detection port. The plurality of water level sensing circuits are respectively set corresponding to different water levels.

[0033] Specifically, the plurality of water level sensing circuits are respectively set corresponding to different water levels.

[0034] It should be noted that the present invention uses a Hall element solution for water level detection. The Hall element water level detection circuit is arranged in the cooling water tank 31. The cooling water tank 31 further includes a float 35 and a rib 36. The rib 36 is arranged in the vertical direction. The float 35 is magnetic and can float on the water surface. The float 35 can slide on the rib 36 due to the change of the water level. The first water level sensing module, the second water level sensing module, the third water level sensing module, the fourth water level sensing module, the fifth water level sensing module and the sixth water level sensing module are arranged at intervals in the vertical direction in sequence. The arrangement interval distance L1 of the Hall components is determined according to the sensing range L2 of the Hall element and the float (magnetic and floating on the water surface), and L2≥L1 to prevent the existence of a blind area that cannot be sensed.

[0035] Specifically, among the multiple water level sensing circuits, at least one water level sensing circuit includes: A Hall element, and an isolation diode connected to the output end of the Hall element through a voltage dividing resistor.

[0036] Specifically, the AD detection ports are set to be multiple, and the multiple AD detection ports are alternately connected to the water level sensing circuits.

[0037] Specifically, it further includes a pull-up resistor. The anodes of the isolation diodes are respectively connected to the AD detection ports and one end of the pull-up resistor.

[0038] Specifically, it further includes a power supply VCC. The power supply ends of the Hall elements are respectively connected to the power supply VCC and the other end of the pull-up resistor.

[0039] It can be understood that each Hall element is powered by VCC.

[0040] Specifically, the pull-up resistor includes a first pull-up resistor and a second pull-up resistor. The multiple AD detection ports are alternately connected to one end of the first pull-up resistor and the second pull-up resistor.

[0041] Preferably, the AD detection ports include a first AD detection port and a second AD detection port. The anodes of the isolation diodes of the multiple water level sensing circuits are alternately connected to the first AD detection port and the second AD detection port.

[0042] Preferably, the pull-up resistor includes a first pull-up resistor and a second pull-up resistor. The first AD detection port is connected to one end of the first pull-up resistor. The second AD detection port is connected to one end of the second pull-up resistor. The other ends of the first pull-up resistor and the second pull-up resistor are connected to the power supply VCC.

[0043] Preferably, each Hall element is powered by VCC. A first pull-up resistor Ra and a second pull-up resistor Rb are respectively placed at the first AD detection port AD1 and the second AD detection port AD2. At the output end of the Hall element, a first voltage-dividing resistor R1, a second voltage-dividing resistor R2, a third voltage-dividing resistor R3, a fourth voltage-dividing resistor R4, a fifth voltage-dividing resistor R5, and a sixth voltage-dividing resistor R6 are placed. To avoid mutual influence among Hall elements, a first isolation diode D1, a second isolation diode D2, a third isolation diode D3, a fourth isolation diode D4, a fifth isolation diode D5, and a sixth isolation diode D6 are added.

[0044] It can be understood that when the float is sensed by the Hall sensor as the water level changes, the Hall element will output a low level of 0V, and when not sensed, it will output a high level of VCC. The change in the output voltage of the Hall element will cause a change in the AD sampling voltage.

[0045] In specific practice, referring to Figures 1 - 3 , the structure of each water level sensing circuit can be set to be the same, and all include: A Hall element and an isolation diode connected to the output end of the Hall element through a voltage-dividing resistor.

[0046] Optionally, one end of the voltage-dividing resistor is connected to the cathode of the isolation diode.

[0047] Optionally, it further includes a pull-up resistor, and the anode of the isolation diode is respectively connected to the AD detection port and one end of the pull-up resistor.

[0048] Optionally, it further includes a power supply VCC, and the power supply end of the Hall element is respectively connected to the power supply VCC and the other end of the pull-up resistor.

[0049] Optionally, the AD detection port includes a first AD detection port AD1 and a second AD detection port AD2, and the anodes of the isolation diodes of the multiple water level sensing circuits are alternately connected to the first AD detection port AD1 and the second AD detection port AD2.

[0050] Optionally, the pull-up resistor includes a first pull-up resistor Ra and a second pull-up resistor Rb. The first AD detection port AD1 is connected to one end of the first pull-up resistor Ra, the second AD detection port AD2 is connected to one end of the second pull-up resistor Rb, and the other ends of the first pull-up resistor Ra and the second pull-up resistor Rb are connected to the power supply VCC.

[0051] In a preferred embodiment, the water level sensing module includes a first water level sensing module, a second water level sensing module, a third water level sensing module, a fourth water level sensing module, a fifth water level sensing module, and a sixth water level sensing module. The first water level sensing module, the second water level sensing module, the first water level sensing module, the fourth water level sensing module, the fifth water level sensing module, and the sixth water level sensing module are used to detect the water level at which the water tank operates. Here, the water level sensing module adopts a Hall element solution. The first Hall element SEN1, the second Hall element SEN2, the third Hall element SEN3, the fourth Hall element SEN4, the fifth Hall element SEN5, and the sixth Hall element SEN6 are arranged corresponding to the first water level sensing module, the second water level sensing module, the third water level sensing module, the fourth water level sensing module, the fifth water level sensing module, and the sixth water level sensing module in sequence. After the Hall element detects the water level, it sends data to the MCU main control unit in real time through the AD sampling module, and then other logic controls are performed after the information is received.

[0052] It can be understood that the first water level sensing module, the second water level sensing module, the third water level sensing module, the fourth water level sensing module, the fifth water level sensing module, and the sixth water level sensing module are arranged at intervals in the vertical direction in sequence. The arrangement interval distance L1 of the Hall components is determined according to the sensing range L2 of the Hall element and the float (magnetic and can float on the water surface), and L2≥L1 to prevent the existence of blind spots that cannot be sensed. Each Hall element is powered by VCC. The first pull-up resistor Ra and the second pull-up resistor Rb are respectively placed at the first AD detection port AD1 and the second AD detection port AD2. The first voltage dividing resistor R1, the second voltage dividing resistor R2, the third voltage dividing resistor R3, the fourth voltage dividing resistor R4, the fifth voltage dividing resistor R5, and the sixth voltage dividing resistor R6 are also placed at the output end of the Hall element. To avoid mutual influence of the Hall elements, the first isolation diode D1, the second isolation diode D2, the third isolation diode D3, the fourth isolation diode D4, the fifth isolation diode D5, and the sixth isolation diode D6 are added. When the float is sensed by the Hall sensor as the water level changes, the Hall element will output a low level of 0V, and when not sensed, it will output a high level of VCC. The change in the output voltage of the Hall element will cause a change in the AD sampling voltage.

[0053] To facilitate understanding of the working principle of the switching power supply time-sharing power-on circuit provided in this embodiment, please refer to Figures 1 - 3 , and the working principle of the circuit is explained as follows: ① When the float 35 rises to a certain position corresponding to the first Hall element SEN1 as the water level rises, the first Hall element SEN1 senses the magnetic field and is triggered to output a low level (i.e., 0V). The VCC voltage forms a loop through the first pull-up resistor Ra, the first voltage dividing resistor D1, and the first voltage dividing resistor R1 to the output end of the first Hall element SEN1. The voltage drop of the first isolation diode is VD. Therefore, the voltage value detected at the AD1 port is: ② Similarly, when the float 35 rises to a certain position with the water level, the voltage value detected by the AD2 port when the second Hall element SEN2 is: ③ Similarly, when the float 35 rises to a certain position with the water level, the voltage value detected by the AD1 port when the third Hall element SEN3 is: ④ Similarly, when the float 35 rises to a certain position with the water level, the voltage value detected by the AD2 port when the fourth Hall element SEN4 is: ⑤ Similarly, when the float 35 rises to a certain position with the water level, the voltage value detected by the AD1 port when the fifth Hall element SEN5 is: ⑥ Similarly, when the float 35 rises to a certain position with the water level, the voltage value detected by the AD2 port when the sixth Hall element SEN6 is: ⑦ Similarly, when the float 35 rises to a certain position with the water level, the voltage value detected by the AD1 port when the (n - 1)th Hall element SENn - 1 is: ⑧ Similarly, when the float 35 rises to a certain position with the water level, the voltage value detected by the AD2 port when the Hall element SENn is: The voltage sampling of AD1 and AD2 does not affect each other and is easy to implement. By arranging AD1 and AD2 alternately, the detection range of the voltage can be increased. The MCU judges the conduction situation of the Hall element according to the voltages sampled by different ADs to judge the water level situation.

[0054] It can be understood that the induction distance of the Hall element is a certain value. In the circuit design of this application, the distance setting between two Hall elements is the key. It is required that no three or more Hall elements can conduct simultaneously (i.e., output 0V), and a single Hall element can conduct alone. There should be no blind area where the Hall element cannot be detected, and the detection ranges between two Hall elements overlap and cover. Refer to the following table for judging the water level by different voltage outputs. Such a design can increase the water level situation between two water levels and increase more water level judgment situations at low cost.

[0055] Please refer to Figure 2, the present invention provides another embodiment, which provides an intelligent water replenishment method for the water tank of a transformer vapor drying device. The intelligent water replenishment method for the water tank of the transformer vapor drying device includes: S100. Use the water level sensing unit provided in the cooling water tank 31 to obtain the water level data in the cooling water tank 31 according to a preset period.

[0056] It can be understood that before step S100, it includes: Pre-set a first preset threshold, a second preset threshold, and a preset period in the control module.

[0057] It can be understood that the first preset threshold, the second preset threshold, and the preset period can be specifically set according to the actual needs of the users of the present invention. The present invention does not specifically limit the values of the first preset threshold, the second preset threshold, and the preset period, as long as they are applicable to the intelligent water replenishment method for the water tank of the transformer vapor drying device provided by the present invention.

[0058] Preferably, the present invention sets the first preset threshold to 30% of the maximum water storage capacity of the cooling water tank 31, sets the second preset threshold to 90% of the maximum water storage capacity of the cooling water tank 31, and preferably sets the preset period to 1 minute. The above settings are obtained by the technical personnel of the present invention through a large number of tests and can well implement the intelligent water replenishment method for the water tank of the transformer vapor drying device described in the present invention.

[0059] S200. Control the action state of the electric control valve provided in the water replenishment pipeline according to the water level data in the cooling water tank 31.

[0060] Specifically, the controlling the action state of the electric control valve provided in the water replenishment pipeline according to the water level data in the cooling water tank 31 includes: Judge whether the water level data in the cooling water tank 31 is greater than or equal to the first preset threshold, and determine whether to control the opening of the electric control valve provided in the water replenishment pipeline according to the judgment result.

[0061] Specifically, the judging whether the water level data in the cooling water tank 31 is greater than or equal to the first preset threshold, and determining whether to control the opening of the electric control valve provided in the water replenishment pipeline according to the judgment result includes: If the water level data in the cooling water tank 31 is greater than or equal to the first preset threshold, control the electric control valve provided in the water replenishment pipeline to close.

[0062] Specifically, the judging whether the water level data in the cooling water tank 31 is greater than or equal to the first preset threshold, and determining whether to control the opening of the electric control valve provided in the water replenishment pipeline according to the judgment result includes: If the water level data in the cooling water tank 31 is less than the first preset threshold, control the electric control valve arranged in the water replenishing pipeline to open.

[0063] Specifically, controlling the electric control valve arranged in the water replenishing pipeline to open includes: Using the water level sensing unit arranged in the cooling water tank 31 to obtain the water level data in the cooling water tank 31 at a preset period, determining whether the water level data in the cooling water tank 31 is greater than or equal to the second preset threshold, and determining whether to control the electric control valve arranged in the water replenishing pipeline to open according to the determination result.

[0064] Specifically, determining whether the water level data in the cooling water tank 31 is greater than or equal to the second preset threshold, and determining whether to control the electric control valve arranged in the water replenishing pipeline to open according to the determination result includes: If the water level data in the cooling water tank 31 is greater than or equal to the second preset threshold, control the electric control valve arranged in the water replenishing pipeline to close.

[0065] Specifically, determining whether the water level data in the cooling water tank 31 is greater than or equal to the second preset threshold, and determining whether to control the electric control valve arranged in the water replenishing pipeline to open according to the determination result includes: If the water level data in the cooling water tank 31 is less than the second preset threshold, control the electric control valve arranged in the water replenishing pipeline to remain open.

[0066] In a preferred embodiment, the present application further provides an electronic device, which includes: A memory; and a processor, wherein computer-readable instructions are stored on the memory, and when the computer-readable instructions are executed by the processor, the intelligent water replenishing method for the water tank of the transformer gas-phase drying equipment is implemented. This computer device can generally be a server, a terminal, or any other electronic device with necessary computing and / or processing capabilities. In one embodiment, this computer device may include a processor, a memory, a network interface, a communication interface, etc. connected through a system bus. The processor of this computer device can be used to provide necessary computing, processing, and / or control capabilities. The memory of this computer device may include a non-volatile storage medium and an internal memory. An operating system, a computer program, etc. may be stored in or on the non-volatile storage medium. The internal memory can provide an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface and the communication interface of this computer device can be used to connect and communicate with external devices through a network. The computer program, when executed by the processor, executes the steps of the method of the present invention.

[0067] The technical features described above can be combined arbitrarily. Although not all possible combinations of these technical features are described, any combination of these technical features should be considered to be covered by this specification, as long as there is no contradiction in such a combination.

[0068] The specific embodiments of the present invention described above do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An intelligent water replenishing system for the water tank of a transformer gas-phase drying device, characterized in that, The system includes: A cooling water tank (31) and a chiller (32), the cooling water tank (31) and the chiller (32) are connected by a waterway, and the cooling water tank (31) and the chiller (32) are used to provide a cooling water source for the gas-phase drying process of the transformer; A standby water tank (38), the standby water tank (38) and the cooling water tank (31) are connected by a makeup water pipeline, an electric control valve is arranged in the makeup water pipeline, and the standby water tank (38) is used to supply water to the cooling water tank (31) when the electric control valve is opened; An acquisition module, configured to acquire the water level data in the cooling water tank (31) at a preset period by using a water level sensing unit arranged in the cooling water tank (31); A control module, configured to control the action state of the electric control valve arranged in the makeup water pipeline according to the water level data in the cooling water tank (31).

2. The intelligent water replenishment system for the water tank of the transformer gas-phase drying equipment according to claim 1, wherein The water level sensing unit includes: A water level sensing circuit and an MCU main control unit (37), the MCU main control unit (37) includes an AD detection port, a plurality of water level sensing circuits are arranged, and at least two water level sensing circuits share the same AD detection port, and the plurality of water level sensing circuits are respectively set corresponding to different water levels.

3. The intelligent water replenishing system for the water tank of the transformer gas-phase drying equipment according to claim 1, characterized in that, Among the plurality of water level sensing circuits, at least one water level sensing circuit includes: A Hall element, and an isolation diode connected to the output end of the Hall element through a voltage dividing resistor.

4. An intelligent water replenishing method for the water tank of a transformer gas-phase drying device, characterized in that, The method includes: S100. Acquire the water level data in the cooling water tank (31) at a preset period by using a water level sensing unit arranged in the cooling water tank (31); S200. Control the action state of the electric control valve arranged in the makeup water pipeline according to the water level data in the cooling water tank (31).

5. The intelligent water replenishment method for the water tank of the transformer gas-phase drying equipment according to claim 4, characterized in that, The controlling the action state of the electric control valve arranged in the makeup water pipeline according to the water level data in the cooling water tank (31) includes: Judging whether the water level data in the cooling water tank (31) is greater than or equal to a first preset threshold, and judging whether to control the electric control valve arranged in the makeup water pipeline to open according to the judgment result.

6. The intelligent water replenishment method for the water tank of the transformer gas-phase drying equipment according to claim 5, characterized in that, The judging whether the water level data in the cooling water tank (31) is greater than or equal to a first preset threshold, and judging whether to control the electric control valve arranged in the makeup water pipeline to open according to the judgment result includes: If the water level data in the cooling water tank (31) is greater than or equal to the first preset threshold, control the electric control valve arranged in the makeup water pipeline to close.

7. The intelligent water replenishing method for the water tank of the transformer gas-phase drying equipment according to claim 5, characterized in that, The judging whether the water level data in the cooling water tank (31) is greater than or equal to a first preset threshold, and judging whether to control the electric control valve arranged in the makeup water pipeline to open according to the judgment result includes: If the water level data in the cooling water tank (31) is less than the first preset threshold, control the electric control valve arranged in the makeup water pipeline to open.

8. The intelligent water replenishing method for the water tank of the transformer gas-phase drying equipment according to claim 7, characterized in that, The controlling the electric control valve arranged in the makeup water pipeline to open includes: Acquire the water level data in the cooling water tank (31) at a preset period by using a water level sensing unit arranged in the cooling water tank (31), judge whether the water level data in the cooling water tank (31) is greater than or equal to a second preset threshold, and judge whether to control the electric control valve arranged in the makeup water pipeline to open according to the judgment result.

9. The intelligent water replenishment method for the water tank of the transformer gas-phase drying equipment according to claim 8, characterized in that, Judging whether the water level data in the cooling water tank (31) is greater than or equal to a second preset threshold value, and determining whether to control the electric control valve arranged in the make-up water pipeline to open according to the judgment result, including: If the water level data in the cooling water tank (31) is greater than or equal to the second preset threshold value, controlling the electric control valve arranged in the make-up water pipeline to close.

10. The intelligent water replenishment method for the water tank of the transformer gas-phase drying equipment according to claim 8, characterized in that, Judging whether the water level data in the cooling water tank (31) is greater than or equal to a second preset threshold value, and determining whether to control the electric control valve arranged in the make-up water pipeline to open according to the judgment result, including: If the water level data in the cooling water tank (31) is less than the second preset threshold value, controlling the electric control valve arranged in the make-up water pipeline to remain open.

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