SF6 gas cylinder inflation system, method and device

Abstract

The invention discloses an SF6 gas cylinder inflation system, method and device. The system disclosed by the invention comprises terminal equipment, an inflation pipeline, a plurality of SF6 gas cylinders, a plurality of heating devices, a plurality of pressure sensors, a plurality of electromagnetic valves and a flow meter, the SF6 gas cylinder is placed in the heating device; the opening of each SF6 gas cylinder is connected in parallel with the gas filling pipeline through the electromagnetic valve; a pressure sensor is arranged at the opening of each SF6 gas cylinder; the flow meter is arranged at the outlet of the inflating pipeline; the multiple heating devices, the multiple pressure sensors, the multiple electromagnetic valves and the flow meter are connected to the terminal equipment.

Description

Technical Field

[0001] The present application relates to the field of electric power technology, and in particular to a SF6 gas cylinder charging system, method and device. Background Art

[0002] Since sulfur hexafluoride SF6 gas has good insulation and arc extinguishing properties, it is widely used in gas-insulated equipment, such as circuit breakers, high-voltage transformers, gas-sealed combined capacitors, high-voltage transmission lines, mutual inductors, etc. During the operation of gas-insulated equipment, maintaining a certain SF6 gas pressure can ensure the insulation strength of the gas-insulated equipment, thereby ensuring the stable operation of the gas-insulated equipment. However, since it is impossible for gas-insulated equipment to be 100% sealed, SF6 gas leakage will inevitably occur after the gas-insulated equipment has been running for a long time. At this time, it is necessary to use SF6 gas cylinders to inflate the gas-insulated equipment. Among them, liquid SF6 is stored in the SF6 gas cylinder. When the SF6 gas cylinder is used to inflate the gas-insulated equipment, the SF6 in the SF6 gas cylinder changes from liquid to gas, which requires a large amount of heat. When the ambient temperature is too low, the SF6 gasification speed is extremely slow, so it is impossible to inflate the gas-insulated equipment normally. Therefore, in order to ensure that the gas-insulated equipment can be inflated normally, it is necessary to heat the SF6 gas cylinder during the process of using the SF6 gas cylinder to inflate the gas-insulated equipment.

[0003] At present, a heating device is usually used to heat the SF6 cylinder when the SF6 cylinder is used to inflate the gas-insulated equipment. Among them, heating the SF6 cylinder will cause the pressure at the mouth of the SF6 cylinder to increase. When the pressure at the mouth of the SF6 cylinder is too high, there will be certain safety hazards when using the SF6 cylinder to inflate the gas-insulated equipment. However, when the existing heating device is heating the SF6 cylinder, it does not consider the impact of the pressure value at the mouth of the SF6 cylinder on the inflation of the SF6 cylinder, which results in the inability to stably inflate the gas-insulated equipment using the SF6 cylinder, which poses certain safety hazards. Summary of the invention

[0004] The embodiments of the present application provide an SF6 gas cylinder charging system, method and device, the main purpose of which is to ensure that SF6 gas cylinders can be used to stably charge gas-insulated equipment.

[0005] In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0006] In a first aspect, the present application provides a SF6 gas cylinder charging system, the system comprising: a terminal device, a charging pipeline, a plurality of SF6 gas cylinders, a plurality of heating devices, a plurality of pressure sensors, a plurality of solenoid valves and a flow meter;

[0007] The SF6 gas cylinder is placed in the heating device;

[0008] The bottle mouth of each SF6 gas cylinder is connected in parallel to the charging pipeline through the solenoid valve;

[0009] A pressure sensor is provided at the mouth of each SF6 gas cylinder;

[0010] The flow meter is arranged at the outlet of the inflation pipe;

[0011] A plurality of the heating devices, a plurality of the pressure sensors, a plurality of the solenoid valves and the flow meter are connected to the terminal device, wherein the heating device is used to heat the corresponding SF6 gas cylinder, collect the total weight value corresponding to the SF6 gas cylinder, and send the total weight value to the terminal device, the pressure sensor is used to collect the bottle mouth pressure value of the corresponding SF6 gas cylinder, and send the bottle mouth pressure value to the terminal device, the flow meter is used to collect the outlet flow rate value corresponding to the inflation pipe, and send the outlet flow rate value to the terminal device, the terminal device is used to select a target SF6 gas cylinder from the plurality of SF6 gas cylinders according to the total weight value corresponding to each SF6 gas cylinder, control the solenoid valve corresponding to the target SF6 gas cylinder to open, and control the heating device corresponding to the target SF6 gas cylinder to heat the target SF6 gas cylinder according to the bottle mouth pressure value corresponding to the target SF6 gas cylinder and the outlet flow rate value corresponding to the inflation pipe.

[0012] In a second aspect, the present application further provides a method for charging an SF6 gas cylinder, which is applied to a terminal device in the SF6 gas cylinder charging system described in the first aspect above, and the method comprises:

[0013] Step S1: Collecting the total weight value corresponding to each SF6 gas cylinder to be selected, wherein the gas cylinder state corresponding to the SF6 gas cylinder to be selected is not empty;

[0014] Step S2: determining the SF6 gas cylinder to be selected with the smallest total weight value among the plurality of SF6 gas cylinders to be selected as the target SF6 gas cylinder;

[0015] Step S3: determining whether the remaining SF6 liquid in the target SF6 gas cylinder is sufficient according to the total weight value corresponding to the target SF6 gas cylinder; if insufficient, controlling the solenoid valve corresponding to the target SF6 gas cylinder to open, and heating the target SF6 gas cylinder according to a first preset heating method; if sufficient, controlling the solenoid valve corresponding to the target SF6 gas cylinder to open, continuously collecting the bottle mouth pressure value corresponding to the target SF6 gas cylinder, and heating the target SF6 gas cylinder according to a second preset heating method and a plurality of the bottle mouth pressure values; wherein the first preset heating method is a heating method for continuously heating the target SF6 gas cylinder, and the second preset heating method is a heating method for intermittently heating the target SF6 gas cylinder according to the bottle mouth pressure value of the target SF6 gas cylinder;

[0016] Step S4: When a stop inflation instruction is received, the solenoid valve corresponding to the target SF6 gas cylinder is controlled to be closed.

[0017] In a third aspect, the present application further provides a SF6 gas cylinder charging device, which is applied to a terminal device in the SF6 gas cylinder charging system described in the first aspect above, and the device comprises:

[0018] A collection unit, used for collecting the total weight value corresponding to each SF6 gas cylinder to be selected, wherein the gas cylinder state corresponding to the SF6 gas cylinder to be selected is not an empty bottle;

[0019] a determination unit, configured to determine the SF6 gas cylinder to be selected with the smallest total weight value among the plurality of SF6 gas cylinders to be selected as the target SF6 gas cylinder;

[0020] A charging unit, used to determine whether the remaining SF6 liquid in the target SF6 gas cylinder is sufficient according to the total weight value corresponding to the target SF6 gas cylinder; if it is insufficient, the solenoid valve corresponding to the target SF6 gas cylinder is controlled to open, and the target SF6 gas cylinder is heated according to a first preset heating method; if it is sufficient, the solenoid valve corresponding to the target SF6 gas cylinder is controlled to open, and the bottle mouth pressure value corresponding to the target SF6 gas cylinder is continuously collected, and the target SF6 gas cylinder is heated according to a second preset heating method and a plurality of the bottle mouth pressure values; wherein the first preset heating method is a heating method for continuously heating the target SF6 gas cylinder, and the second preset heating method is a heating method for intermittently heating the target SF6 gas cylinder according to the bottle mouth pressure value of the target SF6 gas cylinder;

[0021] The control unit is used to control the solenoid valve corresponding to the target SF6 gas cylinder to close when receiving a stop charging instruction.

[0022] In a fourth aspect, an embodiment of the present application provides a storage medium, wherein the storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the SF6 gas cylinder filling method described in the first aspect.

[0023] In a fifth aspect, an embodiment of the present application provides an SF6 gas cylinder charging device, the device comprising a storage medium; and one or more processors, the storage medium is coupled to the processor, and the processor is configured to execute program instructions stored in the storage medium; when the program instructions are executed, the SF6 gas cylinder charging method described in the first aspect is executed.

[0024] By means of the above technical solution, the technical solution provided by this application has at least the following advantages:

[0025] The present application provides an SF6 gas cylinder charging system, method and device. The SF6 gas cylinder charging system provided by the present application includes: a terminal device, a charging pipeline, multiple SF6 gas cylinders, multiple heating devices, multiple pressure sensors, multiple solenoid valves and a flow meter; the SF6 gas cylinder is placed in the heating device; the bottle mouth of each SF6 gas cylinder is connected to the charging pipeline in parallel through a solenoid valve; a pressure sensor is arranged at the bottle mouth of each SF6 gas cylinder; the flow meter is arranged at the outlet of the charging pipeline; multiple heating devices, multiple pressure sensors, multiple solenoid valves and flow meters are connected to the terminal device, wherein the heating device is used to heat the corresponding SF6 gas cylinder, collect the pressure of the SF6 gas cylinder to the charging pipeline, and the charging pipeline outlet is connected to the charging pipeline outlet. The pressure sensor is used to collect the bottle mouth pressure value of the corresponding SF6 gas cylinder, and send the bottle mouth pressure value to the terminal device. The flow meter is used to collect the outlet flow rate value corresponding to the charging pipeline, and send the outlet flow rate value to the terminal device. The terminal device is used to select a target SF6 gas cylinder from multiple SF6 gas cylinders according to the total weight value corresponding to each SF6 gas cylinder, control the solenoid valve corresponding to the target SF6 gas cylinder to open, and control the heating device corresponding to the target SF6 gas cylinder according to the bottle mouth pressure value corresponding to the target SF6 gas cylinder and the outlet flow rate value corresponding to the charging pipeline to heat the target SF6 gas cylinder. Because, during the process of using the target SF6 gas cylinder to inflate the gas-insulated equipment to be inflated, the terminal device controls the heating device corresponding to the target SF6 gas cylinder to heat the target SF6 gas cylinder according to the bottle mouth pressure value corresponding to the target SF6 gas cylinder and the outlet flow rate value corresponding to the inflation pipeline. Therefore, it can be ensured that during the process of using the target SF6 gas cylinder to inflate the gas-insulated equipment to be inflated, the bottle mouth pressure value of the target SF6 gas cylinder is within a safe range, thereby ensuring that the target SF6 gas cylinder can be used to stably inflate the gas-insulated equipment to be inflated without causing safety problems.

[0026] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become easy to understand. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0028] Figure 1 A schematic structural diagram of a first SF6 gas cylinder charging system provided in an embodiment of the present application is shown;

[0029] Figure 2 A schematic structural diagram of a second SF6 gas cylinder charging system provided in an embodiment of the present application is shown;

[0030] Figure 3 A schematic structural diagram of a third SF6 gas cylinder charging system provided in an embodiment of the present application is shown;

[0031] Figure 4 A flow chart of a method for filling a SF6 gas cylinder provided in an embodiment of the present application is shown;

[0032] Figure 5 A block diagram of the composition of an SF6 gas cylinder charging device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0033] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0034] In addition, the words “first”, “second” and the like used in the present application do not indicate any order, quantity or importance, but are only used to distinguish different parts.

[0035] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which this application belongs.

[0036] At present, a heating device is usually used to heat the SF6 cylinder when the SF6 cylinder is used to inflate the gas-insulated equipment. Among them, heating the SF6 cylinder will cause the pressure at the mouth of the SF6 cylinder to increase. When the pressure at the mouth of the SF6 cylinder is too high, there will be certain safety hazards when using the SF6 cylinder to inflate the gas-insulated equipment. However, when the existing heating device is heating the SF6 cylinder, it does not consider the impact of the pressure value at the mouth of the SF6 cylinder on the inflation of the SF6 cylinder, which results in the inability to stably inflate the gas-insulated equipment using the SF6 cylinder, which poses certain safety hazards.

[0037] Therefore, in order to ensure that SF6 gas cylinders can be used to stably inflate gas-insulated equipment, an embodiment of the present application provides an SF6 gas cylinder charging system, such as Figure 1 As shown, the system includes: a terminal device 1, a gas charging pipeline 2, a plurality of SF6 gas cylinders 3, a plurality of heating devices 4, a plurality of pressure sensors 5, a plurality of solenoid valves 6 and a flow meter 7; wherein the heating device 4 is a groove-shaped structure with an upper end opening;

[0038] The SF6 gas cylinder 3 is placed in the heating device 4, that is, one SF6 gas cylinder 3 is placed in the groove of each heating device 4;

[0039] The bottle mouth of each SF6 gas cylinder 3 is connected in parallel to the charging pipeline 2 through the solenoid valve 6;

[0040] A pressure sensor 5 is provided at the mouth of each SF6 gas cylinder 3;

[0041] The flow meter 7 is arranged at the outlet of the inflation pipe 2;

[0042] A plurality of heating devices 4 , a plurality of pressure sensors 5 , a plurality of solenoid valves 6 and a flow meter 7 are connected to the terminal device 1 .

[0043] Among them, for any heating device 4, the heating device 4 is used to heat the corresponding SF6 gas cylinder 3, collect the total weight value of the corresponding SF6 gas cylinder 3, and send the collected total weight value to the terminal device 1; for any pressure sensor 5, the pressure sensor 5 is used to collect the bottle mouth pressure value of the corresponding SF6 gas cylinder 3, and send the collected bottle mouth pressure value to the terminal device 1; the flow meter 7 is used to collect the outlet flow rate value corresponding to the inflation pipe 2, and send the collected outlet flow rate value to the terminal device 1; wherein, the total weight value corresponding to the SF6 gas cylinder 3 is the sum of the weight value of the SF6 gas cylinder 3 itself and the weight value of the SF6 liquid stored in the SF6 gas cylinder 3.

[0044] Among them, the terminal device 1 is used to select a target SF6 gas cylinder from multiple SF6 gas cylinders 3 according to the total weight value corresponding to each SF6 gas cylinder 3, and control the solenoid valve 6 corresponding to the target SF6 gas cylinder to open, so as to use the target SF6 gas cylinder to inflate the gas insulation equipment 8 to be inflated; the terminal device 1 is also used to control the heating device 4 corresponding to the target SF6 gas cylinder to heat the target SF6 gas cylinder according to the bottle mouth pressure value corresponding to the target SF6 gas cylinder and the outlet flow rate value corresponding to the filling pipeline 2.

[0045] The following specifically describes the terminal device 1 in this embodiment through the working process and principle of the terminal device 1 in this embodiment of the application:

[0046] (1) When it is necessary to inflate the gas-insulated device 8 to be inflated, the staff connects the gas-insulated device 8 to be inflated to the outlet of the inflation pipe 2, and inputs the inflation command to the terminal device 1 through the input device. After receiving the inflation command, the terminal device 1 first obtains the gas cylinder status corresponding to each SF6 gas cylinder 3 in the local storage space, and then determines the SF6 gas cylinder 3 whose gas cylinder status is not empty as the SF6 gas cylinder to be selected. Finally, the total weight value corresponding to each SF6 gas cylinder to be selected is collected through the heating device 4 corresponding to each SF6 gas cylinder to be selected.

[0047] (2) The terminal device 1 determines the SF6 gas cylinder with the smallest total weight value among the multiple SF6 gas cylinders to be selected as the target SF6 gas cylinder.

[0048] (3) The terminal device 1 calculates the remaining SF6 liquid weight value corresponding to the target SF6 gas cylinder according to the total weight value and the body weight value corresponding to the target SF6 gas cylinder, that is, first subtracts the body weight value corresponding to the target SF6 gas cylinder from the total weight value corresponding to the target SF6 gas cylinder, and then determines the calculation result as the remaining SF6 liquid weight value corresponding to the target SF6 gas cylinder; when the remaining SF6 liquid weight value is less than or equal to the preset remaining weight threshold, it is determined that the remaining SF6 liquid in the target SF6 gas cylinder is insufficient; when the remaining SF6 liquid weight value is greater than the preset remaining weight threshold, it is determined that the remaining SF6 liquid in the target SF6 gas cylinder is sufficient.

[0049] (4a) if it is determined that the remaining SF6 liquid in the target SF6 gas cylinder is insufficient, the solenoid valve 6 corresponding to the target SF6 gas cylinder is controlled to open, and the target SF6 gas cylinder is used to inflate the gas-insulated device 8 to be inflated, and during the inflating process, the target SF6 gas cylinder is heated according to the first preset heating method;

[0050] Among them, the first preset heating mode is a heating mode for continuously heating the target SF6 gas cylinder, and the first preset inflation mode is specifically: controlling the heating device 4 corresponding to the target SF6 gas cylinder to start heating the target SF6 gas cylinder; after the preset heating time, continuously collecting the outlet flow rate value corresponding to the inflation pipe 2; when the collected outlet flow rate value is 0, controlling the heating device 4 corresponding to the target SF6 gas cylinder to stop heating the target SF6 gas cylinder, and controlling the solenoid valve 6 corresponding to the target SF6 gas cylinder to close, and updating the gas cylinder state corresponding to the target SF6 gas cylinder to an empty bottle, and returning to step (2), and reselecting the target SF6 gas cylinder.

[0051] (4b) if it is determined that the remaining SF6 liquid in the target SF6 gas cylinder is sufficient, the solenoid valve 6 corresponding to the target SF6 gas cylinder is controlled to open, and the target SF6 gas cylinder is used to inflate the gas-insulated device 8 to be inflated, and the bottle mouth pressure value corresponding to the target SF6 gas cylinder is continuously collected during the inflating process, and the target SF6 gas cylinder is heated according to the second preset heating mode and the multiple bottle mouth pressure values;

[0052] The second preset heating method is a heating method for intermittently heating the target SF6 gas cylinder according to the bottle mouth pressure value of the target SF6 gas cylinder. The second preset charging method is specifically:

[0053] When the collected bottle mouth pressure value is less than or equal to the preset pressure threshold, the heating device 4 corresponding to the target SF6 gas cylinder is controlled to start heating the target SF6 gas cylinder, and during the heating process, the total weight value corresponding to the target SF6 gas cylinder is continuously collected; when the difference between the collected total weight value and the bottle body weight corresponding to the target SF6 gas cylinder is greater than the preset residual weight threshold, the heating device 4 corresponding to the target SF6 gas cylinder is controlled to continue heating the target SF6 gas cylinder until the collected bottle mouth pressure value is less than or equal to the preset pressure threshold; when the difference between the collected total weight value and the bottle body weight corresponding to the target SF6 gas cylinder is less than or equal to the preset residual weight threshold, the outlet flow rate value corresponding to the inflation pipe 2 is continuously collected, and when the collected outlet flow rate value is 0, the heating device 4 corresponding to the target SF6 gas cylinder is controlled to stop heating the target SF6 gas cylinder, and the solenoid valve 6 corresponding to the target SF6 gas cylinder is controlled to be closed, and the gas cylinder state corresponding to the target SF6 gas cylinder is updated to an empty bottle, and the process returns to step (2) to reselect the target SF6 gas cylinder;

[0054] When the collected bottle mouth pressure value is greater than the preset pressure threshold, the outlet flow rate value corresponding to the inflation pipe 2 is continuously collected; when the collected outlet flow rate value is not 0, the heating device 4 corresponding to the target SF6 gas cylinder is controlled to stop heating the target SF6 gas cylinder (at this time, if the heating device 4 corresponding to the target SF6 gas cylinder is in an unheated state, there is no need to perform this operation) until the collected bottle mouth pressure value is less than or equal to the preset pressure threshold; when the collected outlet flow rate value is 0, the heating device 4 corresponding to the target SF6 gas cylinder is controlled to stop heating the target SF6 gas cylinder (at this time, if the heating device 4 corresponding to the target SF6 gas cylinder is in an unheated state, there is no need to perform this operation), and output a preset alarm message.

[0055] (5) When the staff observes the pressure gauge of the gas-insulated equipment 8 to be inflated and finds that the pressure value of the gas-insulated equipment 8 to be inflated is greater than the preset threshold, the staff can input a stop inflation command to the terminal device 1 through the input device. After receiving the stop inflation command, the terminal device 1 controls the solenoid valve 6 corresponding to the target SF6 gas cylinder to close, that is, controls the target SF6 gas cylinder to stop inflating the gas-insulated equipment 8 to be inflated.

[0056] The preset threshold may be, but is not limited to, 0.7mp, 0.75mp, 0.8mp, etc.

[0057] It should be noted that after the terminal device 1 receives the stop inflation instruction, if the heating device 4 corresponding to the target SF6 gas cylinder is in a heating state, the terminal device 1 also needs to control the heating device 4 corresponding to the target SF6 gas cylinder to stop heating the target SF6 gas cylinder.

[0058] The embodiment of the present application provides an SF6 gas cylinder charging system, and the SF6 gas cylinder charging system provided by the embodiment of the present application includes: a terminal device, a charging pipeline, a plurality of SF6 gas cylinders, a plurality of heating devices, a plurality of pressure sensors, a plurality of solenoid valves and a flow meter; the SF6 gas cylinder is placed in the heating device; the bottle mouth of each SF6 gas cylinder is connected to the charging pipeline in parallel through a solenoid valve; a pressure sensor is arranged at the bottle mouth of each SF6 gas cylinder; the flow meter is arranged at the outlet of the charging pipeline; a plurality of heating devices, a plurality of pressure sensors, a plurality of solenoid valves and a flow meter are connected to the terminal device, wherein the heating device is used to heat the SF6 gas cylinder corresponding to it, collect the pressure of the SF6 gas cylinder to The pressure sensor is used to collect the bottle mouth pressure value of the corresponding SF6 gas cylinder, and send the bottle mouth pressure value to the terminal device. The flow meter is used to collect the outlet flow rate value corresponding to the charging pipeline, and send the outlet flow rate value to the terminal device. The terminal device is used to select a target SF6 gas cylinder from multiple SF6 gas cylinders according to the total weight value corresponding to each SF6 gas cylinder, control the solenoid valve corresponding to the target SF6 gas cylinder to open, and control the heating device corresponding to the target SF6 gas cylinder according to the bottle mouth pressure value corresponding to the target SF6 gas cylinder and the outlet flow rate value corresponding to the charging pipeline to heat the target SF6 gas cylinder. Because, during the process of using the target SF6 gas cylinder to inflate the gas-insulated equipment to be inflated, the terminal device controls the heating device corresponding to the target SF6 gas cylinder to heat the target SF6 gas cylinder according to the bottle mouth pressure value corresponding to the target SF6 gas cylinder and the outlet flow rate value corresponding to the inflation pipeline. Therefore, it can be ensured that during the process of using the target SF6 gas cylinder to inflate the gas-insulated equipment to be inflated, the bottle mouth pressure value of the target SF6 gas cylinder is within a safe range, thereby ensuring that the target SF6 gas cylinder can be used to stably inflate the gas-insulated equipment to be inflated without causing safety problems.

[0059] Further, such as Figure 2 As shown, the heating device 4 includes a heater 41 and a weight sensor 42; the heater 41 is used to heat the corresponding SF6 gas cylinder 3; the weight sensor 42 is used to measure the total weight value of the corresponding SF6 gas cylinder 3, wherein the heater 41 is connected to the terminal device 1, and the weight sensor 42 is connected to the terminal device 1. In the embodiment of the present application, for any heating device 4, the terminal device 1 can control the heater 41 in the heating device 4 to heat the SF6 gas cylinder 3 placed in the heating device 4, and the weight sensor 42 in the heating device 4 can collect the total weight value corresponding to the SF6 gas cylinder 3 placed in the heating device 4, and send the collected total weight value to the terminal device 1.

[0060] Further, such as Figure 3As shown, the SF6 gas cylinder charging system also includes: a check valve 9; the check valve 9 is arranged on the charging pipe 2. In the embodiment of the present application, the check valve 9 arranged on the charging pipe 2 can prevent the SF6 gas from flowing back when the gas pressure of the target SF6 gas cylinder 3 is low.

[0061] The present application embodiment provides a method for filling a SF6 gas cylinder. The method is applied to Figure 1 , Figure 2 or Figure 3 The SF6 gas cylinder charging system shown in the figure comprises: a terminal device, a charging pipeline, a plurality of SF6 gas cylinders, a plurality of heating devices, a plurality of pressure sensors, a plurality of solenoid valves and a flow meter. The execution subject of the method is the terminal device in the SF6 gas cylinder charging system. The terminal device can be, but is not limited to, a computer, a laptop computer, a tablet computer, etc., as shown in FIG. Figure 4 As shown, the method includes:

[0062] 201. Collect the total weight value corresponding to each SF6 gas cylinder to be selected.

[0063] Among them, the SF6 gas cylinder charging system includes multiple SF6 gas cylinders. For SF6 gas cylinders in which the SF6 liquid in the bottle has not been used up, the gas cylinder status corresponding to this type of SF6 gas cylinder is a non-empty bottle. For SF6 gas cylinders in which the SF6 liquid in the bottle has been used up, the gas cylinder status corresponding to this type of SF6 gas cylinder is an empty bottle. The gas cylinder status corresponding to each SF6 gas cylinder is stored in the local storage space of the terminal device; among them, the total weight value corresponding to the SF6 gas cylinder is the sum of the weight value of the SF6 gas cylinder itself and the weight value of the SF6 liquid stored in the SF6 gas cylinder.

[0064] When it is necessary to inflate the gas-insulated equipment to be inflated, the staff connects the gas-insulated equipment to be inflated to the outlet of the inflation pipe, and inputs the inflation command to the terminal device through the input device. After receiving the inflation command, the terminal device first obtains the cylinder status corresponding to each SF6 cylinder in the SF6 cylinder inflation system in the local storage space, and then determines the SF6 cylinders with a non-empty cylinder status as the SF6 cylinders to be selected. Finally, the total weight value corresponding to each SF6 cylinder to be selected is collected, so that the SF6 cylinder for the gas-insulated equipment to be inflated can be selected from multiple SF6 cylinders to be selected according to the total weight value corresponding to each SF6 cylinder to be selected.

[0065] Specifically, in this step, the terminal device may collect the total weight value corresponding to each SF6 gas cylinder to be selected through the heating device corresponding to each SF6 gas cylinder to be selected.

[0066] 202. Determine the SF6 gas cylinder to be selected with the smallest total weight value among the multiple SF6 gas cylinders to be selected as the target SF6 gas cylinder.

[0067] After the terminal device collects the total weight value corresponding to each SF6 gas cylinder to be selected, it can determine the SF6 gas cylinder with the smallest total weight value among multiple SF6 gas cylinders to be selected as the SF6 gas cylinder to be inflated for the gas-insulated equipment to be inflated (i.e., the target SF6 gas cylinder).

[0068] 203. Determine whether the remaining SF6 liquid in the target SF6 gas cylinder is sufficient according to the total weight value corresponding to the target SF6 gas cylinder; if not, control the solenoid valve corresponding to the target SF6 gas cylinder to open, and heat the target SF6 gas cylinder according to the first preset heating method; if sufficient, control the solenoid valve corresponding to the target SF6 gas cylinder to open, and continuously collect the bottle mouth pressure value corresponding to the target SF6 gas cylinder, and heat the target SF6 gas cylinder according to the second preset heating method and multiple bottle mouth pressure values.

[0069] Among them, the first preset heating method is a heating method for continuously heating the target SF6 gas cylinder, and the second preset heating method is a heating method for intermittently heating the target SF6 gas cylinder according to the bottle mouth pressure value of the target SF6 gas cylinder.

[0070] After determining the target SF6 gas cylinder, the terminal device can determine whether the remaining SF6 liquid in the target SF6 gas cylinder is sufficient according to the total weight value corresponding to the target SF6 gas cylinder; if it is determined that the remaining SF6 liquid in the target SF6 gas cylinder is insufficient, the solenoid valve corresponding to the target SF6 gas cylinder is controlled to open, and the target SF6 gas cylinder is used to inflate the gas-insulated equipment to be inflated, and during the inflation process, the target SF6 gas cylinder is heated according to the first preset heating method; if it is determined that the remaining SF6 liquid in the target SF6 gas cylinder is sufficient, the solenoid valve corresponding to the target SF6 gas cylinder is controlled to open, and the target SF6 gas cylinder is used to inflate the gas-insulated equipment to be inflated, and the bottle mouth pressure value corresponding to the target SF6 gas cylinder is continuously collected during the inflation process, and the target SF6 gas cylinder is heated according to the second preset heating method and multiple bottle mouth pressure values.

[0071] Specifically, in this step, the terminal device can continuously collect the bottle mouth pressure value corresponding to the target SF6 gas cylinder through the pressure sensor set at the bottle mouth of the target SF6 gas cylinder.

[0072] It should be noted that, when the amount of SF6 liquid remaining in the SF6 cylinder is insufficient, heating the SF6 cylinder continuously may cause the pressure at the mouth of the SF6 cylinder to increase, but will not cause the pressure at the mouth of the SF6 cylinder to exceed the safe range. Therefore, there will be no safety hazard in the process of using SF6 cylinders to inflate gas-insulated equipment. Therefore, when it is determined that the remaining SF6 liquid in the target SF6 cylinder is insufficient and the target SF6 cylinder is used to inflate the gas-insulated equipment to be inflated, there is no need to collect the pressure value at the mouth of the target SF6 cylinder, and the target SF6 cylinder can be directly heated continuously according to the first preset heating method.

[0073] It should be noted that, when the amount of SF6 liquid remaining in the SF6 cylinder is sufficient, continuing to heat the SF6 cylinder will cause the pressure at the mouth of the SF6 cylinder to exceed the safe range, thereby posing a safety hazard in the process of using the SF6 cylinder to inflate the gas-insulated equipment. Therefore, when it is determined that the amount of SF6 liquid remaining in the target SF6 cylinder is sufficient, and the target SF6 cylinder is used to inflate the gas-insulated equipment to be inflated, it is necessary to continuously collect the pressure value at the mouth of the target SF6 cylinder, and intermittently heat the target SF6 cylinder according to the second preset heating method and the multiple collected mouth pressure values.

[0074] 204. When a stop inflation command is received, the solenoid valve corresponding to the target SF6 gas cylinder is controlled to be closed.

[0075] When the staff observes the pressure gauge of the gas-insulated equipment to be inflated and finds that the pressure value of the gas-insulated equipment to be inflated is greater than the preset threshold, the staff can input a stop inflation command to the terminal device through the input device. After receiving the stop inflation command, the terminal device needs to control the solenoid valve corresponding to the target SF6 gas cylinder to close, that is, control the target SF6 gas cylinder to stop inflating the gas-insulated equipment to be inflated.

[0076] It should be noted that after the terminal device receives the stop charging instruction, if the heating device corresponding to the target SF6 gas cylinder is in a heating state, the terminal device also needs to control the heating device corresponding to the target SF6 gas cylinder to stop heating the target SF6 gas cylinder.

[0077] The preset threshold may be, but is not limited to, 0.7mp, 0.75mp, 0.8mp, etc.

[0078] Furthermore, in an embodiment of the present application, the first preset inflation mode is specifically: controlling the heating device corresponding to the target SF6 gas cylinder to start heating the target SF6 gas cylinder; after a preset heating time, continuously collecting the outlet flow rate value corresponding to the inflation pipeline; when the collected outlet flow rate value is 0, controlling the heating device corresponding to the target SF6 gas cylinder to stop heating the target SF6 gas cylinder, and controlling the solenoid valve corresponding to the target SF6 gas cylinder to close, and updating the gas cylinder state corresponding to the target SF6 gas cylinder to an empty bottle, and returning to step 202 to reselect the target SF6 gas cylinder.

[0079] The preset duration may be, but is not limited to, 3 minutes, 5 minutes, 7 minutes, etc.

[0080] Specifically, in this step, the terminal device may collect the outlet flow rate value corresponding to the inflation pipe through a flow meter provided at the outlet of the inflation pipe.

[0081] Further, in the embodiment of the present application, the second preset inflation mode is specifically:

[0082] When the collected bottle mouth pressure value is less than or equal to the preset pressure threshold, the heating device corresponding to the target SF6 gas cylinder is controlled to start heating the target SF6 gas cylinder, and during the heating process, the total weight value corresponding to the target SF6 gas cylinder is continuously collected; when the difference between the collected total weight value and the bottle body weight corresponding to the target SF6 gas cylinder is greater than the preset remaining weight threshold, the heating device corresponding to the target SF6 gas cylinder is controlled to continue heating the target SF6 gas cylinder until the collected bottle mouth pressure value is less than or equal to the preset pressure threshold; when the difference between the collected total weight value and the bottle body weight corresponding to the target SF6 gas cylinder is less than or equal to the preset remaining weight threshold, the outlet flow rate value corresponding to the charging pipe is continuously collected, and when the collected outlet flow rate value is 0, the heating device corresponding to the target SF6 gas cylinder is controlled to stop heating the target SF6 gas cylinder, and the solenoid valve corresponding to the target SF6 gas cylinder is controlled to be closed, and the gas cylinder state corresponding to the target SF6 gas cylinder is updated to an empty bottle, and the process returns to step 202 to reselect the target SF6 gas cylinder;

[0083] When the collected bottle mouth pressure value is greater than the preset pressure threshold, the outlet flow rate value corresponding to the inflation pipe is continuously collected; when the collected outlet flow rate value is not 0, the heating device corresponding to the target SF6 gas cylinder is controlled to stop heating the target SF6 gas cylinder (at this time, if the heating device corresponding to the target SF6 gas cylinder is in an unheated state, there is no need to perform this operation) until the collected bottle mouth pressure value is less than or equal to the preset pressure threshold; when the collected outlet flow rate value is 0, the heating device corresponding to the target SF6 gas cylinder is controlled to stop heating the target SF6 gas cylinder (at this time, if the heating device corresponding to the target SF6 gas cylinder is in an unheated state, there is no need to perform this operation), and output the preset alarm information.

[0084] Among them, the preset pressure threshold can be but not limited to: 0.9mp, 1mp, 1.1mp, etc.; wherein, the preset remaining weight threshold can be but not limited to: 2kg, 2.5kg, 3kg, etc.; wherein, the preset alarm information can be specifically a voice message or a text message, and the embodiment of the present application does not specifically limit this.

[0085] It should be noted that when the bottle mouth pressure value of the target SF6 gas cylinder is greater than the preset pressure threshold, but the outlet flow rate value of the inflation pipe is 0, it means that the solenoid valve corresponding to the target SF6 may have closed itself due to a fault, or the inflation pipeline of the gas-insulated equipment to be inflated is blocked. At this time, if the target SF6 gas cylinder is still heated, it is very easy to cause a safety accident. Therefore, the terminal device controls the heating device corresponding to the target SF6 gas cylinder to stop heating the target SF6 gas cylinder, and outputs a preset alarm message to remind the staff that there is a problem with the solenoid valve corresponding to the target SF6 or the inflation pipeline of the gas-insulated equipment to be inflated, and timely maintenance is required.

[0086] Specifically, in this step, the terminal device may collect the outlet flow rate value corresponding to the inflation pipe through a flow meter provided at the outlet of the inflation pipe.

[0087] Furthermore, in an embodiment of the present application, the specific process by which the terminal device determines whether the remaining SF6 liquid in the target SF6 gas cylinder is sufficient according to the total weight value corresponding to the target SF6 gas cylinder is as follows: first, the remaining SF6 liquid weight value corresponding to the target SF6 gas cylinder is calculated according to the total weight value and the bottle weight value corresponding to the target SF6 gas cylinder, that is, the total weight value corresponding to the target SF6 gas cylinder is first subtracted from the bottle weight value corresponding to the target SF6 gas cylinder, and then the calculation result is determined as the remaining SF6 liquid weight value corresponding to the target SF6 gas cylinder; when the remaining SF6 liquid weight value is less than or equal to the preset remaining weight threshold, it is determined that the remaining SF6 liquid in the target SF6 gas cylinder is insufficient; when the remaining SF6 liquid weight value is greater than the preset remaining weight threshold, it is determined that the remaining SF6 liquid in the target SF6 gas cylinder is sufficient.

[0088] Furthermore, in an embodiment of the present application, the terminal device can also output a unique identifier corresponding to each SF6 gas cylinder whose cylinder status is empty, so that the staff can remove the SF6 gas cylinder whose cylinder status is empty from the heating device, and place a new SF6 gas cylinder into the heating device, and set the cylinder status of the newly placed SF6 gas cylinder to non-empty.

[0089] Furthermore, as a response to the above Figure 4In order to realize the method shown in the figure, another embodiment of the present application also provides an SF6 gas cylinder charging device. This device embodiment corresponds to the aforementioned method embodiment. For ease of reading, this device embodiment will not repeat the details of the aforementioned method embodiment one by one, but it should be clear that the device in this embodiment can correspond to all the contents of the aforementioned method embodiment. This device is used to ensure that SF6 gas cylinders can be used to stably charge gas-insulated equipment, specifically as follows Figure 5 As shown, the device comprises:

[0090] The collecting unit 301 is used to collect the total weight value corresponding to each SF6 gas cylinder to be selected, wherein the gas cylinder state corresponding to the SF6 gas cylinder to be selected is not an empty bottle;

[0091] A determination unit 302 is used to determine the SF6 gas cylinder to be selected with the smallest total weight value among the multiple SF6 gas cylinders to be selected collected by the collection unit 301 as a target SF6 gas cylinder;

[0092] The charging unit 303 is used to determine whether the remaining SF6 liquid in the target SF6 gas cylinder is sufficient according to the total weight value corresponding to the target SF6 gas cylinder determined by the determination unit 302; if it is insufficient, the solenoid valve corresponding to the target SF6 gas cylinder is controlled to open, and the target SF6 gas cylinder is heated according to a first preset heating method; if it is sufficient, the solenoid valve corresponding to the target SF6 gas cylinder is controlled to open, and the bottle mouth pressure value corresponding to the target SF6 gas cylinder is continuously collected, and the target SF6 gas cylinder is heated according to a second preset heating method and a plurality of the bottle mouth pressure values; wherein the first preset heating method is a heating method for continuously heating the target SF6 gas cylinder, and the second preset heating method is a heating method for intermittently heating the target SF6 gas cylinder according to the bottle mouth pressure value of the target SF6 gas cylinder;

[0093] The control unit 304 is used to control the solenoid valve corresponding to the target SF6 gas cylinder to close when receiving the stop charging instruction.

[0094] Further, such as Figure 5 As shown, the first preset heating method is specifically: controlling the heating device corresponding to the target SF6 gas cylinder to start heating the target SF6 gas cylinder; after a preset heating time, continuously collecting the outlet flow rate value corresponding to the charging pipe; when the collected outlet flow rate value is 0, controlling the heating device corresponding to the target SF6 gas cylinder to stop heating the target SF6 gas cylinder, and controlling the solenoid valve corresponding to the target SF6 gas cylinder to close, and updating the gas cylinder state corresponding to the target SF6 gas cylinder to an empty bottle, and controlling the determination unit 302 to re-determine the target SF6 gas cylinder.

[0095] Further, such as Figure 5 As shown, the second preset heating mode is specifically:

[0096] When the collected bottle mouth pressure value is less than or equal to the preset pressure threshold, the heating device corresponding to the target SF6 gas cylinder is controlled to start heating the target SF6 gas cylinder, and during the heating process, the total weight value corresponding to the target SF6 gas cylinder is continuously collected; when the difference between the collected total weight value and the bottle body weight corresponding to the target SF6 gas cylinder is greater than the preset remaining weight threshold, the heating device corresponding to the target SF6 gas cylinder is controlled to continue heating the target SF6 gas cylinder until the collected bottle mouth pressure value is less than or equal to the preset pressure threshold; when the difference between the collected total weight value and the bottle body weight corresponding to the target SF6 gas cylinder is less than or equal to the preset remaining weight threshold, the outlet flow rate value corresponding to the charging pipeline is continuously collected, and when the collected outlet flow rate value is 0, the heating device corresponding to the target SF6 gas cylinder is controlled to stop heating the target SF6 gas cylinder, and the solenoid valve corresponding to the target SF6 gas cylinder is controlled to be closed, and the gas cylinder state corresponding to the target SF6 gas cylinder is updated to an empty bottle, and the determination unit 302 is controlled to re-determine the target SF6 gas cylinder;

[0097] When the collected bottle mouth pressure value is greater than the preset pressure threshold, the outlet flow rate value corresponding to the inflation pipe is continuously collected; when the collected outlet flow rate value is not 0, the heating device corresponding to the target SF6 gas cylinder is controlled to stop heating the target SF6 gas cylinder until the collected bottle mouth pressure value is less than or equal to the preset pressure threshold; when the collected outlet flow rate value is 0, the heating device corresponding to the target SF6 gas cylinder is controlled to stop heating the target SF6 gas cylinder, and a preset alarm message is output.

[0098] Further, such as Figure 5 As shown, the determination unit 302 is specifically used to calculate the remaining SF6 liquid weight value corresponding to the target SF6 gas cylinder according to the total weight value and the bottle weight value corresponding to the target SF6 gas cylinder; when the remaining SF6 liquid weight value is less than or equal to the preset remaining weight threshold, it is determined that the remaining SF6 liquid in the target SF6 gas cylinder is insufficient; when the remaining SF6 liquid weight value is greater than the preset remaining weight threshold, it is determined that the remaining SF6 liquid in the target SF6 gas cylinder is sufficient.

[0099] The embodiment of the present application provides an SF6 gas cylinder charging system, method and device. The SF6 gas cylinder charging system provided by the embodiment of the present application includes: a terminal device, a charging pipeline, multiple SF6 gas cylinders, multiple heating devices, multiple pressure sensors, multiple solenoid valves and a flow meter; the SF6 gas cylinder is placed in the heating device; the bottle mouth of each SF6 gas cylinder is connected to the charging pipeline in parallel through a solenoid valve; a pressure sensor is provided at the bottle mouth of each SF6 gas cylinder; the flow meter is provided at the outlet of the charging pipeline; multiple heating devices, multiple pressure sensors, multiple solenoid valves and flow meters are connected to the terminal device, wherein the heating device is used to heat the corresponding SF6 gas cylinder, collect SF6 The terminal device is used to collect the total weight value corresponding to the gas cylinder, and send the total weight value to the terminal device, the pressure sensor is used to collect the bottle mouth pressure value of the corresponding SF6 gas cylinder, and send the bottle mouth pressure value to the terminal device, the flow meter is used to collect the outlet flow rate value corresponding to the filling pipeline, and send the outlet flow rate value to the terminal device, the terminal device is used to select the target SF6 gas cylinder from multiple SF6 gas cylinders according to the total weight value corresponding to each SF6 gas cylinder, and control the solenoid valve corresponding to the target SF6 gas cylinder to open, and control the heating device corresponding to the target SF6 gas cylinder according to the bottle mouth pressure value corresponding to the target SF6 gas cylinder and the outlet flow rate value corresponding to the filling pipeline to heat the target SF6 gas cylinder. Because, during the process of using the target SF6 gas cylinder to inflate the gas-insulated equipment to be inflated, the terminal device controls the heating device corresponding to the target SF6 gas cylinder to heat the target SF6 gas cylinder according to the bottle mouth pressure value corresponding to the target SF6 gas cylinder and the outlet flow rate value corresponding to the inflation pipeline. Therefore, it can be ensured that during the process of using the target SF6 gas cylinder to inflate the gas-insulated equipment to be inflated, the bottle mouth pressure value of the target SF6 gas cylinder is within a safe range, thereby ensuring that the target SF6 gas cylinder can be used to stably inflate the gas-insulated equipment to be inflated without causing safety problems.

[0100] An embodiment of the present application provides a storage medium, which includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the above-mentioned SF6 gas cylinder filling method.

[0101] The storage medium may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM, and the memory includes at least one storage chip.

[0102] An embodiment of the present application also provides an SF6 gas cylinder charging device, which includes a storage medium; and one or more processors, wherein the storage medium is coupled to the processor, and the processor is configured to execute program instructions stored in the storage medium; when the program instructions are executed, the above-mentioned SF6 gas cylinder charging method is executed.

[0103] The embodiment of the present application provides a device, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, the following steps are implemented:

[0104] Step S1: Collecting the total weight value corresponding to each SF6 gas cylinder to be selected, wherein the gas cylinder state corresponding to the SF6 gas cylinder to be selected is not empty;

[0105] Step S2: determining the SF6 gas cylinder to be selected with the smallest total weight value among the plurality of SF6 gas cylinders to be selected as the target SF6 gas cylinder;

[0106] Step S3: determining whether the remaining SF6 liquid in the target SF6 gas cylinder is sufficient according to the total weight value corresponding to the target SF6 gas cylinder; if insufficient, controlling the solenoid valve corresponding to the target SF6 gas cylinder to open, and heating the target SF6 gas cylinder according to a first preset heating method; if sufficient, controlling the solenoid valve corresponding to the target SF6 gas cylinder to open, continuously collecting the bottle mouth pressure value corresponding to the target SF6 gas cylinder, and heating the target SF6 gas cylinder according to a second preset heating method and a plurality of the bottle mouth pressure values; wherein the first preset heating method is a heating method for continuously heating the target SF6 gas cylinder, and the second preset heating method is a heating method for intermittently heating the target SF6 gas cylinder according to the bottle mouth pressure value of the target SF6 gas cylinder;

[0107] Step S4: When a stop inflation instruction is received, the solenoid valve corresponding to the target SF6 gas cylinder is controlled to be closed.

[0108] Furthermore, the first preset heating method is specifically: controlling the heating device corresponding to the target SF6 gas cylinder to start heating the target SF6 gas cylinder; after a preset heating time, continuously collecting the outlet flow rate value corresponding to the inflation pipe; when the collected outlet flow rate value is 0, controlling the heating device corresponding to the target SF6 gas cylinder to stop heating the target SF6 gas cylinder, controlling the solenoid valve corresponding to the target SF6 gas cylinder to close, and updating the gas cylinder state corresponding to the target SF6 gas cylinder to an empty bottle, and returning to step S2.

[0109] Furthermore, the second preset heating mode is specifically:

[0110] When the collected bottle mouth pressure value is less than or equal to the preset pressure threshold, the heating device corresponding to the target SF6 gas cylinder is controlled to start heating the target SF6 gas cylinder, and during the heating process, the total weight value corresponding to the target SF6 gas cylinder is continuously collected; when the difference between the collected total weight value and the bottle body weight corresponding to the target SF6 gas cylinder is greater than the preset remaining weight threshold, the heating device corresponding to the target SF6 gas cylinder is controlled to continue heating the target SF6 gas cylinder until the collected bottle mouth pressure value is less than or equal to the preset pressure threshold; when the difference between the collected total weight value and the bottle body weight corresponding to the target SF6 gas cylinder is less than or equal to the preset remaining weight threshold, the outlet flow rate value corresponding to the charging pipe is continuously collected, and when the collected outlet flow rate value is 0, the heating device corresponding to the target SF6 gas cylinder is controlled to stop heating the target SF6 gas cylinder, and the solenoid valve corresponding to the target SF6 gas cylinder is controlled to be closed, and the gas cylinder state corresponding to the target SF6 gas cylinder is updated to an empty bottle, and the process returns to step S2;

[0111] When the collected bottle mouth pressure value is greater than the preset pressure threshold, the outlet flow rate value corresponding to the inflation pipe is continuously collected; when the collected outlet flow rate value is not 0, the heating device corresponding to the target SF6 gas cylinder is controlled to stop heating the target SF6 gas cylinder until the collected bottle mouth pressure value is less than or equal to the preset pressure threshold; when the collected outlet flow rate value is 0, the heating device corresponding to the target SF6 gas cylinder is controlled to stop heating the target SF6 gas cylinder, and a preset alarm message is output.

[0112] Further, the determining whether the remaining SF6 liquid in the target SF6 gas cylinder is sufficient according to the total weight value corresponding to the target SF6 gas cylinder includes:

[0113] Calculate the remaining SF6 liquid weight corresponding to the target SF6 gas cylinder according to the total weight value and the cylinder weight value corresponding to the target SF6 gas cylinder;

[0114] When the remaining SF6 liquid weight value is less than or equal to a preset remaining weight threshold, it is determined that the remaining SF6 liquid in the target SF6 gas cylinder is insufficient;

[0115] When the remaining SF6 liquid weight value is greater than the preset remaining weight threshold, it is determined that the remaining SF6 liquid in the target SF6 gas cylinder is sufficient.

[0116] The present application also provides a computer program product, which, when executed on a data processing device, is suitable for executing a program code having the following method steps: step S1: collecting the total weight value corresponding to each SF6 gas cylinder to be selected, wherein the gas cylinder state corresponding to the SF6 gas cylinder to be selected is not an empty bottle; step S2: determining the SF6 gas cylinder to be selected with the smallest total weight value among the multiple SF6 gas cylinders to be selected as the target SF6 gas cylinder; step S3: determining whether the remaining SF6 liquid in the target SF6 gas cylinder is sufficient according to the total weight value corresponding to the target SF6 gas cylinder; if not, controlling the solenoid valve corresponding to the target SF6 gas cylinder to open, and adding the liquid according to the first preset value; The target SF6 gas cylinder is heated in a heating mode; if it is sufficient, the solenoid valve corresponding to the target SF6 gas cylinder is controlled to open, and the bottle mouth pressure value corresponding to the target SF6 gas cylinder is continuously collected, and the target SF6 gas cylinder is heated according to a second preset heating mode and a plurality of the bottle mouth pressure values; wherein the first preset heating mode is a heating mode for continuously heating the target SF6 gas cylinder, and the second preset heating mode is a heating mode for intermittently heating the target SF6 gas cylinder according to the bottle mouth pressure value of the target SF6 gas cylinder; step S4: when a stop charging instruction is received, the solenoid valve corresponding to the target SF6 gas cylinder is controlled to close.

[0117] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0118] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0119] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0120] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0121] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0122] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0123] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0124] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0125] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0126] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A SF6 gas cylinder charging system, characterized in that: The system comprises: a terminal device, a gas charging pipeline, a plurality of SF6 gas cylinders, a plurality of heating devices, a plurality of pressure sensors, a plurality of solenoid valves and a flow meter; The SF6 gas cylinder is placed in the heating device; The bottle mouth of each SF6 gas cylinder is connected in parallel to the charging pipeline through the solenoid valve; A pressure sensor is provided at the mouth of each SF6 gas cylinder; The flow meter is arranged at the outlet of the inflation pipe; A plurality of the heating devices, a plurality of the pressure sensors, a plurality of the solenoid valves and the flow meter are connected to the terminal device, wherein the heating device is used to heat the corresponding SF6 gas cylinder, collect the total weight value corresponding to the SF6 gas cylinder, and send the total weight value to the terminal device, the pressure sensor is used to collect the bottle mouth pressure value of the corresponding SF6 gas cylinder, and send the bottle mouth pressure value to the terminal device, the flow meter is used to collect the outlet flow rate value corresponding to the inflation pipe, and send the outlet flow rate value to the terminal device, the terminal device is used to select a target SF6 gas cylinder from the plurality of SF6 gas cylinders according to the total weight value corresponding to each SF6 gas cylinder, control the solenoid valve corresponding to the target SF6 gas cylinder to open, and control the heating device corresponding to the target SF6 gas cylinder to heat the target SF6 gas cylinder according to the bottle mouth pressure value corresponding to the target SF6 gas cylinder and the outlet flow rate value corresponding to the inflation pipe.

2. The SF6 gas cylinder charging system according to claim 1, characterized in that: The heating device comprises a heater and a weight sensor; The heater is used to heat the corresponding SF6 gas cylinder; The weight sensor is used to collect the total weight value of the corresponding SF6 gas cylinder.

3. The SF6 gas cylinder charging system according to claim 2, characterized in that: The SF6 gas cylinder charging system also includes: a check valve; The check valve is arranged on the inflation pipe.

4. A method for filling a SF6 gas cylinder, characterized in that: The method is applied to a terminal device in a SF6 gas cylinder charging system according to any one of claims 1 to 3, and the method comprises: Step S1: Collecting the total weight value corresponding to each SF6 gas cylinder to be selected, wherein the gas cylinder state corresponding to the SF6 gas cylinder to be selected is not empty; Step S2: determining the SF6 gas cylinder to be selected with the smallest total weight value among the plurality of SF6 gas cylinders to be selected as the target SF6 gas cylinder; Step S3: determining whether the remaining SF6 liquid in the target SF6 gas cylinder is sufficient according to the total weight value corresponding to the target SF6 gas cylinder; if insufficient, controlling the solenoid valve corresponding to the target SF6 gas cylinder to open, and heating the target SF6 gas cylinder according to a first preset heating method; if sufficient, controlling the solenoid valve corresponding to the target SF6 gas cylinder to open, continuously collecting the bottle mouth pressure value corresponding to the target SF6 gas cylinder, and heating the target SF6 gas cylinder according to a second preset heating method and a plurality of the bottle mouth pressure values; wherein the first preset heating method is a heating method for continuously heating the target SF6 gas cylinder, and the second preset heating method is a heating method for intermittently heating the target SF6 gas cylinder according to the bottle mouth pressure value of the target SF6 gas cylinder; Step S4: When a stop inflation instruction is received, the solenoid valve corresponding to the target SF6 gas cylinder is controlled to be closed.

5. The method according to claim 4, characterized in that The first preset heating method is specifically: controlling the heating device corresponding to the target SF6 gas cylinder to start heating the target SF6 gas cylinder; after a preset heating time, continuously collecting the outlet flow rate value corresponding to the inflation pipe; when the collected outlet flow rate value is 0, controlling the heating device corresponding to the target SF6 gas cylinder to stop heating the target SF6 gas cylinder, controlling the solenoid valve corresponding to the target SF6 gas cylinder to close, and updating the gas cylinder state corresponding to the target SF6 gas cylinder to an empty bottle, and returning to step S2.

6. The method according to claim 4, characterized in that The second preset heating mode is specifically: When the collected bottle mouth pressure value is less than or equal to the preset pressure threshold, the heating device corresponding to the target SF6 gas cylinder is controlled to start heating the target SF6 gas cylinder, and during the heating process, the total weight value corresponding to the target SF6 gas cylinder is continuously collected; when the difference between the collected total weight value and the bottle body weight corresponding to the target SF6 gas cylinder is greater than the preset remaining weight threshold, the heating device corresponding to the target SF6 gas cylinder is controlled to continue heating the target SF6 gas cylinder until the collected bottle mouth pressure value is less than or equal to the preset pressure threshold; when the difference between the collected total weight value and the bottle body weight corresponding to the target SF6 gas cylinder is less than or equal to the preset remaining weight threshold, the outlet flow rate value corresponding to the charging pipe is continuously collected, and when the collected outlet flow rate value is 0, the heating device corresponding to the target SF6 gas cylinder is controlled to stop heating the target SF6 gas cylinder, and the solenoid valve corresponding to the target SF6 gas cylinder is controlled to be closed, and the gas cylinder state corresponding to the target SF6 gas cylinder is updated to an empty bottle, and the process returns to step S2; When the collected bottle mouth pressure value is greater than the preset pressure threshold, the outlet flow rate value corresponding to the inflation pipe is continuously collected; when the collected outlet flow rate value is not 0, the heating device corresponding to the target SF6 gas cylinder is controlled to stop heating the target SF6 gas cylinder until the collected bottle mouth pressure value is less than or equal to the preset pressure threshold; when the collected outlet flow rate value is 0, the heating device corresponding to the target SF6 gas cylinder is controlled to stop heating the target SF6 gas cylinder, and a preset alarm message is output.

7. The method according to any one of claims 4 to 6, characterized in that: The determining whether the remaining SF6 liquid in the target SF6 gas cylinder is sufficient according to the total weight value corresponding to the target SF6 gas cylinder includes: Calculate the remaining SF6 liquid weight corresponding to the target SF6 gas cylinder according to the total weight value and the cylinder weight value corresponding to the target SF6 gas cylinder; When the remaining SF6 liquid weight value is less than or equal to a preset remaining weight threshold, it is determined that the remaining SF6 liquid in the target SF6 gas cylinder is insufficient; When the remaining SF6 liquid weight value is greater than the preset remaining weight threshold, it is determined that the remaining SF6 liquid in the target SF6 gas cylinder is sufficient.

8. A SF6 gas cylinder charging device, characterized in that: The device is applied to a terminal device in a SF6 gas cylinder charging system according to any one of claims 1 to 3, and the device comprises: A collection unit, used for collecting the total weight value corresponding to each SF6 gas cylinder to be selected, wherein the gas cylinder state corresponding to the SF6 gas cylinder to be selected is not an empty bottle; a determination unit, configured to determine the SF6 gas cylinder to be selected with the smallest total weight value among the plurality of SF6 gas cylinders to be selected as the target SF6 gas cylinder; A charging unit, used to determine whether the remaining SF6 liquid in the target SF6 gas cylinder is sufficient according to the total weight value corresponding to the target SF6 gas cylinder; if it is insufficient, the solenoid valve corresponding to the target SF6 gas cylinder is controlled to open, and the target SF6 gas cylinder is heated according to a first preset heating method; if it is sufficient, the solenoid valve corresponding to the target SF6 gas cylinder is controlled to open, and the bottle mouth pressure value corresponding to the target SF6 gas cylinder is continuously collected, and the target SF6 gas cylinder is heated according to a second preset heating method and a plurality of the bottle mouth pressure values; wherein the first preset heating method is a heating method for continuously heating the target SF6 gas cylinder, and the second preset heating method is a heating method for intermittently heating the target SF6 gas cylinder according to the bottle mouth pressure value of the target SF6 gas cylinder; The control unit is used to control the solenoid valve corresponding to the target SF6 gas cylinder to close when receiving a stop charging instruction.

9. A storage medium, characterized in that: The storage medium includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the SF6 gas cylinder filling method according to any one of claims 4 to 7.

10. A SF6 gas cylinder charging device, characterized in that: The device includes a storage medium; and one or more processors, the storage medium is coupled to the processor, and the processor is configured to execute program instructions stored in the storage medium; when the program instructions are executed, the SF6 gas cylinder filling method described in any one of claims 4 to 7 is executed.

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