Highly adaptive sulfur hexafluoride gas purification treatment control system and method

Abstract

A highly adaptive sulfur hexafluoride gas purification treatment control system and method. The control system comprises: a first treatment module for removing solid particles and decomposition products from an SF6 gas to be purified and driving the SF6 gas to enter other modules, an SF6 integrated tester (4) for measuring the purity and impurity content of the SF6 gas, a second treatment module for washing away acidic impurities in SF6, a third treatment module for drying, a fourth treatment module for separating SF6 from air, a fifth treatment module for separating SF6 from CF4, C2F6 and C3F8 gases, and a storage module, all of which are connected in sequence, and a control background connected to the other modules, wherein inlets and outlets of the second, fourth and fifth treatment modules are connected across a bypass valve, and the corresponding treatment module is bypassed under a set condition; the storage module is used for storing purified SF6 and impurity gases that cannot be exhausted; and the control background is used for controlling all valves in the highly adaptive sulfur hexafluoride gas purification treatment control system to form different SF6 gas paths.

Description

A highly adaptable sulfur hexafluoride gas purification control system and method Technical Field

[0001] The present invention belongs to the technical field of power equipment control systems, and more specifically, relates to a highly adaptable sulfur hexafluoride gas purification treatment control system and method. Background Art

[0002] Sulfur hexafluoride ( ) gas has excellent insulation and arc extinguishing properties and is a widely used insulating medium for power equipment at home and abroad. Since the greenhouse effect of sulfur hexafluoride is 23,900 times that of carbon dioxide gas, it must be removed when the equipment is overhauled and retired. Recycle and reuse after treatment. In order to ensure the insulation safety of the equipment, according to national standards, the treated The gas must meet the quality index requirements of new gas before it can be recycled.

[0003] Used The composition of gas is relatively complex, involving water, solid particles, air, 、 、 、 、 、 、 、 etc. Water and solid particles can be adsorbed and removed by filtration. 、 Acidic substances such as alkali can be removed by alkaline washing. 、 、 Decomposition products such as chlorinated ... 、 、 Cannot be separated by simple processes.

[0004] Traditional purification control systems can only process Gas treatment and purification requires the use of a control system with complex processes such as double-tower distillation and cryogenics. The control system cannot select the most suitable purification control method according to the gas composition. Under the premise of ensuring that the new gas index is met after treatment, the treatment process should be simplified as much as possible, while at the same time the purification treatment rate should be increased as much as possible and the amount of waste gas in the tail gas should be reduced. content. Summary of the Invention

[0005] In order to solve the deficiencies in the prior art, the present invention provides a highly adaptable The purification control system and method can select the most suitable purification treatment method according to the content of components in the gas to meet the requirements of various types of impurity components. Gas purification treatment.

[0006] The present invention adopts the following technical solutions. The first aspect of the present invention provides a highly adaptable sulfur hexafluoride gas purification and treatment control system, comprising: a first processing module, Comprehensive tester, second processing module, third processing module, fourth processing module, fifth processing module, storage module and control background; characterized by:

[0007] The first processing module is used to remove Solid particles and decomposition products in the gas, and drive the Gas enters other modules;

[0008] The comprehensive tester is connected to the outlet of the first processing module for testing Gas purity and impurity content;

[0009] The second processing module is connected to Between the integrated tester and the third processing module, used to wash away The inlet and outlet of the second processing module are connected across the first bypass valve to bypass the second processing module under set conditions;

[0010] The third processing module is connected between the second processing module and the fourth processing module, and is used to The gas is dried;

[0011] The fourth processing module is connected between the third processing module and the fifth processing module for separating and air, the inlet and outlet of the fourth processing module are connected across the second bypass valve, for bypassing the fourth processing module under set conditions;

[0012] The fifth processing module is connected between the fourth processing module and the storage module for separating and 、 、 Gas, the inlet and outlet of the fifth processing module are connected across the third bypass valve, which is used to bypass the fifth processing module under set conditions;

[0013] The storage module is used to store the purified and impurity gases that cannot be evacuated;

[0014] The control background is used to control all valves in the highly adaptable sulfur hexafluoride gas purification control system to form different Gas purification path.

[0015] Preferably, the first processing module includes: a first cylinders, circulation pumps and adsorption chambers;

[0016] First Cylinders for storage of purified gas;

[0017] The circulation pump is connected to the first Between the cylinder and the adsorption chamber, it is used to The gas flows in a highly adaptable sulfur hexafluoride gas purification control system to provide driving force;

[0018] Adsorption chamber for adsorption Solid particles and decomposition products in the gas.

[0019] Preferably, Comprehensive tester for testing Gas purity, air, 、 、 , humidity, acidity, hydrolyzable fluoride and mineral oil content;

[0020] The detection results are sent to the control background. The control background adaptively controls the switching of the second processing module, the third processing module, the fourth processing module, the fifth processing module and the storage module according to the different impurities detected in the gas, forming different gas paths and thus selecting different gas purification treatment methods.

[0021] Preferably, the second processing module comprises: a first valve and an alkaline washing tank connected to each other;

[0022] The state of the first valve is opposite to that of the first bypass valve, and is used to control the opening and closing of the second processing module path. When the first valve is opened and the first bypass valve is closed, the second processing module is put into use; when the first valve is closed and the first bypass valve is opened, the second processing module is put into use. Gas purge path removal;

[0023] The alkali washing pool includes: multiple alkali liquid tanks connected in series, which are used to wash away Acidic impurities in.

[0024] Preferably, the third processing module comprises: a drying chamber for removing Moisture in gas; to be purified The gases all pass through the drying chamber.

[0025] Preferably, the fourth processing module comprises: a third valve and a membrane separation chamber connected to each other;

[0026] The state of the third valve is opposite to that of the second bypass valve, and is used to control the opening and closing of the path of the fourth processing module. When the third valve is open and the second bypass valve is closed, the fourth processing module is put into use; when the third valve is closed and the second bypass valve is open, the fourth processing module is cut off from the gas path;

[0027] The membrane separation chamber includes: multiple membrane separation tanks connected in series for separation With nitrogen and oxygen.

[0028] Preferably, the fifth processing module comprises: a fourth valve, a column separation chamber, a screw pump and Chromatographic detector;

[0029] The state of the fourth valve is opposite to that of the third bypass valve, and is used to control the opening and closing of the path of the fifth processing module. When the fourth valve is open and the third bypass valve is closed, the fifth processing module is put into use; when the fourth valve is closed and the third bypass valve is open, the fifth processing module is bypassed.

[0030] Column separation chamber for separation and 、 and .

[0031] Preferably, the storage module includes: a second valve and a second Steel cylinder, and the connected seventh valve and impurity gas cylinder;

[0032] The second Cylinders are used to store purified The impurity gas cylinder is used to store Foreign impurity gases;

[0033] The gas in the impurity cylinder can be pumped into the column separation chamber again through the second circulation pump and the fifth valve for secondary separation.

[0034] Preferably, to be purified The gas passes through the packed columns in sequence, and the last packed column is connected Chromatographic detector, can detect air, 、 、 and , send the measured gas components to the background control system, and automatically store the impurity gas into the impurity gas cylinder by controlling the seventh valve and the screw pump. Gas storage to the second cylinder.

[0035] Preferably, the second, fourth and fifth processing modules include the same connection structure, and each includes: a first subunit, a second subunit, a third subunit and a fourth subunit connected in series in sequence; the first subunit is provided with a first subunit inlet solenoid valve, the second subunit is provided with a second subunit outlet solenoid valve, the third subunit is provided with a third subunit inlet solenoid valve, and the fourth subunit is provided with a fourth subunit outlet solenoid valve;

[0036] A single subunit outlet valve is set at the connection between the first subunit and the second subunit via a tee; a double subunit outlet valve is set at the connection between the second subunit and the third subunit via a tee; and a triple subunit outlet valve is set at the connection between the third subunit and the fourth subunit via a tee.

[0037] A second aspect of the present invention provides a highly adaptable sulfur hexafluoride gas purification process control method, based on the highly adaptable sulfur hexafluoride gas purification process control system, comprising the following steps:

[0038] Step 1: remove the waste water in the first treatment module Solid particles and decomposition products in the gas, and drive the Gas enters other modules;

[0039] Step 2, The comprehensive tester detects the gas composition from the outlet of the first processing module, including: Gas purity, air, 、 、 , humidity, acidity, hydrolyzable fluoride and mineral oil content;

[0040] Step 3: Determine whether the acidity meets the Purification target, if it meets the requirements, the first bypass valve bypasses the second treatment module and continues to step 4. If it does not meet the requirements, the second treatment module is washed away. After removing the acidic impurities in the solution, proceed to step 4;

[0041] Step 4: Remove the third processing module After checking the moisture in the gas, determine whether the air content meets the requirements Purification target, if it meets the requirements, the second bypass valve bypasses the fourth treatment module and continues to step 5. If it does not meet the requirements, the fourth treatment module is separated. After the air, proceed to step 5;

[0042] Step 5, judge 、 、 Is the content in compliance If the purification target is met, the third bypass valve bypasses the fifth treatment module. The gas goes directly into the storage module from the fourth processing module. If it does not meet the requirements, the fifth processing module will separate it. and 、 and Then enter the storage module.

[0043] Preferably, the second, fourth and fifth processing modules adopt the same connection structure, and each comprises: a first subunit, a second subunit, a third subunit and a fourth subunit connected in series in sequence; the first subunit is provided with a first subunit inlet solenoid valve, the second subunit is provided with a second subunit outlet solenoid valve, the third subunit is provided with a third subunit inlet solenoid valve, and the fourth subunit is provided with a fourth subunit outlet solenoid valve; a single subunit outlet valve is provided at the connection between the first subunit and the second subunit via a tee; a double subunit outlet valve is provided at the connection between the second subunit and the third subunit via a tee; and a triple subunit outlet valve is provided at the connection between the third subunit and the fourth subunit via a tee.

[0044] Control the background, according to The impurities obtained by the comprehensive tester belong to the interval, and the corresponding number of sub-units are input.

[0045] Preferably, the control background controls the switching of the subunits using the following formula:

[0046]

[0047] Where:

[0048] Indicates the number of sub-units that need to be invested;

[0049] express Impurity content results obtained by comprehensive tester testing;

[0050] express Gas purification target;

[0051] Indicates the processing capacity of a single subunit;

[0052] represents a natural constant;

[0053] Indicates the time when the first subunit has been put into operation;

[0054] Indicates safety margin;

[0055] Represents the floor function.

[0056] Compared with the prior art, the beneficial effects of the present invention include at least: the most suitable purification treatment method can be selected according to the content of the components in the gas to meet the requirements of various types of impurity components. Gas purification. Furthermore, the length of the purification path is adjusted according to the impurity content, shortening the purification time and improving purification efficiency. All valves are digital valves, centrally controlled by the control center, eliminating the need for manual intervention and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] FIG1 is a schematic diagram of a highly adaptable sulfur hexafluoride gas purification process control system provided in accordance with an embodiment of the present invention;

[0058] FIG2 is a flow chart of a highly adaptable sulfur hexafluoride gas purification control method provided in accordance with an embodiment of the present invention;

[0059] 3 is a schematic diagram of a specific connection method of an alkali washing tank provided in accordance with an embodiment of the present invention;

[0060] FIG4 is a schematic diagram of a specific connection method of a membrane separation chamber provided in accordance with an embodiment of the present invention;

[0061] FIG5 is a schematic diagram of a specific connection method of a column separation chamber provided according to an embodiment of the present invention.

[0062] In the picture:

[0063] 1-First Cylinder, 2-first circulation pump, 3-adsorption chamber, 4- Comprehensive tester, 5-first valve, 6-first bypass valve, 7-alkali washing tank, 8-drying chamber, 9-third valve, 10-membrane separation chamber, 11-fourth valve, 12-fifth valve, 13-column separation chamber, 14-sixth valve, 15-screw pump, 16-seventh valve, 17-second valve, 18-second Cylinder, 19-impurity gas cylinder, 20- Chromatographic detector, 21-second circulation pump, 22-second bypass valve, 23-third bypass valve. DETAILED DESCRIPTION

[0064] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described in this application are only part of the embodiments of the present invention, not all of them. Based on the spirit of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0065] As shown in FIG1 , embodiment 1 of the present invention provides a highly adaptable sulfur hexafluoride gas purification and treatment control system. The content of impurity components in the gas is analyzed by using different modules. Purification treatment to ensure Use the optimal purification solution to achieve the set purity.

[0066] Preferably, as shown in Table 1, the purity setting includes but is not limited to, Purity index, air content index, Content index, Content index, Content index, humidity index and acidity index, meet the requirements of Table 1 Gas is considered reusable.

[0067]

[0068] The highly adaptable sulfur hexafluoride gas purification and control system comprises: a first processing module, Comprehensive tester 4, a second processing module, a third processing module, a fourth processing module, a fifth processing module, a storage module and a control background.

[0069] The first processing module is used to remove Solid particles and decomposition products in the gas, and drive The gas enters other modules; the first processing module includes: a first Cylinder 1, circulation pump 2 and adsorption chamber 3; first Cylinder 1 is used to store the purified Gas; Circulation pump 2 is connected to the first Between the cylinder 1 and the adsorption chamber 3, it is used to The gas flows in a highly adaptable sulfur hexafluoride gas purification control system to provide driving force.

[0070] Adsorption chamber 3 is used for adsorption Solid particles and decomposition products in the gas, including but not limited to, 、 、 Waiting for purification The gases first pass through the adsorption chamber 3 to remove any solid particles and decomposition products. Preferably, the adsorption chamber can be reused through regeneration.

[0071] The comprehensive tester 4 is connected to the outlet of the first processing module and is used to detect the indicators in Table 1. Gas purity, air, 、 、 , humidity, acidity, and the content of hydrolyzable fluoride and mineral oil, etc.

[0072] It is worth noting that to be purified The gas passes through the first processing module and is then used Comprehensive tester detection, the control background adaptively controls the switching of the second processing module, the third processing module, the fourth processing module, the fifth processing module and the storage module according to the different impurities detected in the gas, forming different gas paths, thereby selecting different gas purification treatment methods to ensure After treatment, the new air quality index requirements are met and the purification efficiency is the highest.

[0073] The second processing module is connected to Between the comprehensive tester 4 and the third processing module, used to wash away The inlet and outlet of the second processing module are connected across the first bypass valve 6 to bypass the second processing module under set conditions, so that Gas from The comprehensive tester 4 directly enters the third processing module; the second processing module includes: a first valve 5 and an alkaline washing tank 7 connected to each other.

[0074] The state of the first valve 5 is opposite to that of the first bypass valve 6, and is used to control the opening and closing of the path of the second processing module. When the first valve 5 is open and the first bypass valve 6 is closed, the second processing module is put into use; when the first valve 5 is closed and the first bypass valve 6 is open, the second processing module is bypassed, that is, the second processing module is cut off from the gas path.

[0075] Specifically, the alkali washing tank 7 is used to wash away Acidic impurities in, including but not limited to, 、 etc. When When the acidity measured by the comprehensive tester 4 does not meet the requirements set in Table 1, Gas passing through After the comprehensive tester 4, it enters the alkaline washing tank 7 through the first valve 5 and is removed by the alkaline washing tank. Acidic impurities in gas.

[0076] In a preferred but non-limiting embodiment, the alkali washing tank 7 comprises: a plurality of alkali liquid tanks connected in series, The gas passes through the alkali liquid tanks in turn. The last alkali liquid tank is equipped with a solution pH test sensor. When the alkalinity value measured by the last alkali liquid tank drops significantly, the solution in each alkali liquid tank needs to be replaced. Comprehensive tester 4 test results display If the gas acidity meets the requirements set in Table 1, it does not need to enter the alkali cleaning tank 7. In this case, the first valve 5 is closed and the first bypass valve 6 is opened to bypass the alkali cleaning tank 7.

[0077] In a further preferred but non-limiting embodiment, as shown in Figure 3, the alkali washing pool 7 includes: a first alkali liquid tank 71, a second alkali liquid tank 72, a third alkali liquid tank 73 and a fourth alkali liquid tank 74 connected in series in sequence; the first alkali liquid tank 71 is provided with a first alkali liquid tank inlet solenoid valve, the second alkali liquid tank 72 is provided with a second alkali liquid tank outlet solenoid valve, the third alkali liquid tank 73 is provided with a third alkali liquid tank inlet solenoid valve, and the fourth alkali liquid tank 74 is provided with a fourth alkali liquid tank outlet solenoid valve; a single alkali liquid tank outlet valve is provided at the connection between the first alkali liquid tank 71 and the second alkali liquid tank 72 via a tee; a double alkali liquid tank outlet valve is provided at the connection between the second alkali liquid tank 72 and the third alkali liquid tank 73 via a tee; a triple alkali liquid tank outlet valve is provided at the connection between the third alkali liquid tank 73 and the fourth alkali liquid tank 74 via a tee.

[0078] The first alkali liquid tank 71, the second alkali liquid tank 72, the third alkali liquid tank 73 and the fourth alkali liquid tank 74 are all provided with a solution pH test sensor. The amount of alkali liquid tanks to be added is selected based on the acidic impurity content in the gas. The control methods include but are not limited to: Comprehensive tester 4 test results display When the gas acidity is in the first range, it only needs to be put into the first alkali liquid tank 71 to complete the purification. The first alkali liquid tank inlet solenoid valve and the single alkali liquid tank outlet valve of the alkali washing tank 7 are opened, and the other valves of the alkali washing tank 7 are closed. The gas only passes through the first alkali liquid tank 71 to complete the removal of acidic impurities, and no longer passes through the second alkali liquid tank 72, the third alkali liquid tank 73 and the fourth alkali liquid tank 74, thereby reducing the time for removing acidic impurities to 1 / 4.

[0079] Similarly, Comprehensive tester 4 test results display When the gas acidity is in the second range, it only needs to be put into the first alkali liquid tank 71 and the second alkali liquid tank 72 to complete the purification. The first alkali liquid tank inlet solenoid valve, the second alkali liquid tank outlet solenoid valve and the double alkali liquid tank outlet valve of the alkali washing tank 7 are opened, and the other valves of the alkali washing tank 7 are closed. The gas only passes through the first alkali liquid tank 71 and the second alkali liquid tank 72 to complete the removal of acidic impurities, and no longer passes through the third alkali liquid tank 73 and the fourth alkali liquid tank 74, thereby reducing the time for removing acidic impurities to 1 / 2.

[0080] Similarly, Comprehensive tester 4 test results display When the gas acidity is in the third interval, the first alkali liquid tank 71, the second alkali liquid tank 72 and the third alkali liquid tank 73 need to be put into the alkali washing tank 7 to complete the purification. The first alkali liquid tank inlet solenoid valve, the second alkali liquid tank outlet solenoid valve, the third alkali liquid tank inlet solenoid valve and the three alkali liquid tank outlet valve of the alkali washing tank 7 are opened, and the other valves of the alkali washing tank 7 are closed. The gas only passes through the first alkali liquid tank 71, the second alkali liquid tank 72 and the third alkali liquid tank 73 to complete the removal of acidic impurities, and no longer passes through the fourth alkali liquid tank 74, reducing the time for removing acidic impurities to 3 / 4.

[0081] like Comprehensive tester 4 test results display When the gas acidity is in the fourth interval, all the first alkali liquid tank 71, the second alkali liquid tank 72, the third alkali liquid tank 73 and the fourth alkali liquid tank 74 need to be put into the alkali cleaning tank 7 to complete the purification. The first alkali liquid tank inlet solenoid valve, the second alkali liquid tank outlet solenoid valve, the third alkali liquid tank inlet solenoid valve and the fourth alkali liquid tank outlet solenoid valve of the alkali cleaning tank 7 are opened, and the other valves of the alkali cleaning tank 7 are closed. The gas passes through the first alkali liquid tank 71, the second alkali liquid tank 72, the third alkali liquid tank 73 and the fourth alkali liquid tank 74, thereby achieving deep removal of acidic impurities.

[0082] The interval division method includes, for example but not limited to, multiplying the processing capacity of a single alkali liquid tank by a safety margin to set the interval length.

[0083] In a further preferred but non-limiting embodiment, the control background controls the switching of the first alkali liquid tank 71, the second alkali liquid tank 72, the third alkali liquid tank 73 and the fourth alkali liquid tank 74 using the following formula:

[0084]

[0085] Where:

[0086] Indicates the number of alkali solution tanks that need to be put into use;

[0087] express Acidity results obtained by comprehensive tester 4;

[0088] express Gas purification targets are preferably, but not limited to, those specified in Table 1 for acidity;

[0089] Indicates the processing capacity of a single alkali liquid tank;

[0090] represents a natural constant;

[0091] Indicates the time when the first alkali liquid tank has been put into operation;

[0092] Indicates a safety margin, preferably, but not limited to, not less than 0.3;

[0093] Represents the floor function.

[0094] The third processing module is connected between the second processing module and the fourth processing module, and is used to The gas is dried. Specifically, the third processing module includes: a drying chamber 8, which is used to remove Moisture in the gas; If all items in Table 1 are qualified, or only the humidity index does not meet the requirements of Table 1, the gas only needs to pass through the drying chamber to enter It is worth noting that in order to ensure that the gas is fully dry, The gases all pass through the drying chamber 8 .

[0095] The fourth processing module is connected between the third processing module and the fifth processing module for separating Separate from air The inlet and outlet of the fourth processing module are connected across the second bypass valve 22 for bypassing the fourth processing module under set conditions. The gas directly enters the subsequent treatment from the third treatment module; the fourth treatment module includes: a third valve 9 and a membrane separation chamber 10 connected to each other.

[0096] The state of the third valve 9 is opposite to that of the second bypass valve 22, and is used to control the opening and closing of the path of the fourth processing module. When the third valve 9 is open and the second bypass valve 22 is closed, the fourth processing module is put into use; when the third valve 9 is closed and the second bypass valve 22 is open, the fourth processing module is bypassed, that is, the fourth processing module is cut off from the gas path.

[0097] Specifically, the membrane separation chamber 10 is used to separate with air; when Measured by comprehensive tester 4 When the purity to air ratio is lower than the set ratio, preferably but not limited to 9:1, after being dried by the third processing module, the gas needs to enter the membrane separation chamber 10 for separation. The membrane separation chamber 10 will Effectively separated from the air, the air is directly exhausted, Continue to select the appropriate treatment method according to the impurities contained. If the purity and control ratio is not lower than the set ratio, the liquid will not enter the membrane separation chamber 10 . In this case, the third valve 9 is closed and the second bypass valve 22 is opened to bypass the membrane separation chamber 10 .

[0098] In a preferred but non-limiting embodiment, the membrane separation chamber 10 comprises: a plurality of membrane separation tanks connected in series, The gas passes through the membrane separation tank in turn. Comprehensive tester 4 test results display If the air content of the gas meets the requirements set in Table 1, it does not need to enter the membrane separation chamber 10.

[0099] In a further preferred but non-limiting embodiment, as shown in Figure 4, the membrane separation chamber 10 includes: a first membrane separation tank 101, a second membrane separation tank 102, a third membrane separation tank 103 and a fourth membrane separation tank 104 connected in series in sequence; the first membrane separation tank 101 is provided with a first membrane separation tank inlet solenoid valve, the second membrane separation tank 102 is provided with a second membrane separation tank outlet solenoid valve, the third membrane separation tank 103 is provided with a third membrane separation tank inlet solenoid valve, and the fourth membrane separation tank 104 is provided with a fourth membrane separation tank outlet solenoid valve; a single membrane separation tank outlet valve is provided at the connection between the first membrane separation tank 101 and the second membrane separation tank 102 via a tee; a double membrane separation tank outlet valve is provided at the connection between the second membrane separation tank 102 and the third membrane separation tank 103 via a tee; a triple membrane separation tank outlet valve is provided at the connection between the third membrane separation tank 103 and the fourth membrane separation tank 104 via a tee.

[0100] according to The number of membrane separation tanks to be put into use is selected based on the air impurity content in the gas. The control methods include but are not limited to: Comprehensive tester 4 test results display The air content is in the first range, and purification can be completed by only putting the first membrane separation tank 101 into the membrane separation chamber 10. The first membrane separation tank inlet solenoid valve and the single membrane separation tank outlet valve are opened, and the other valves of the membrane separation chamber 10 are closed. The gas only passes through the first membrane separation tank 101 to complete the removal of air impurities, and no longer passes through the second membrane separation tank 102, the third membrane separation tank 103 and the fourth membrane separation tank 104, reducing the time for removing air impurities to 1 / 4.

[0101] Similarly, Comprehensive tester 4 test results display When the air content is in the second range, only the first membrane separation tank 101 and the second membrane separation tank 102 need to be put into use to complete the purification. The first membrane separation tank inlet solenoid valve, the second membrane separation tank outlet solenoid valve and the double membrane separation tank outlet valve of the membrane separation chamber 10 are opened, and the other valves of the membrane separation chamber 10 are closed. The gas only passes through the first membrane separation tank 101 and the second membrane separation tank 102 to complete the removal of air impurities, and no longer passes through the third membrane separation tank 103 and the fourth membrane separation tank 104, reducing the time for removing air impurities to 1 / 2.

[0102] Similarly, Comprehensive tester 4 test results display When the air content is in the third range, the first membrane separation tank 101, the second membrane separation tank 102 and the third membrane separation tank 103 need to be put into the membrane separation chamber 10 to complete the purification. The first membrane separation tank inlet solenoid valve, the second membrane separation tank outlet solenoid valve, the third membrane separation tank inlet solenoid valve and the three-membrane separation tank outlet valve are opened, and the other valves of the membrane separation chamber 10 are closed. The gas only passes through the first membrane separation tank 101, the second membrane separation tank 102 and the third membrane separation tank 103 to complete the removal of air impurities, and no longer passes through the fourth membrane separation tank 104, reducing the time for removing air impurities to 3 / 4.

[0103] like Comprehensive tester 4 test results display When the air content is in the fourth interval, all the first membrane separation tank 101, the second membrane separation tank 102, the third membrane separation tank 103 and the fourth membrane separation tank 104 need to be put into operation to complete the purification. The first membrane separation tank inlet solenoid valve, the second membrane separation tank outlet solenoid valve, the third membrane separation tank inlet solenoid valve and the fourth membrane separation tank outlet solenoid valve of the membrane separation chamber 10 are opened, and the other valves of the membrane separation chamber 10 are closed. The gas passes through the first membrane separation tank 101 , the second membrane separation tank 102 , the third membrane separation tank 103 and the fourth membrane separation tank 104 , thereby achieving deep removal of air impurities.

[0104] The interval division method includes, for example but not limited to, adding a safety margin to the processing capacity of a single membrane separation tank to set the interval length.

[0105] In a further preferred but non-limiting embodiment, the control background controls the switching of the first membrane separation tank 101, the second membrane separation tank 102, the third membrane separation tank 103 and the fourth membrane separation tank 104 according to the following formula:

[0106]

[0107] Where:

[0108] Indicates the number of membrane separation tanks that need to be invested;

[0109] express The air content results obtained by the comprehensive tester 4;

[0110] express Gas purification targets are preferably, but not limited to, those specified in Table 1 for air content;

[0111] Indicates the processing capacity of a single membrane separation tank;

[0112] represents a natural constant;

[0113] Indicates the time the first membrane separation tank has been put into operation;

[0114] Indicates a safety margin, preferably, but not limited to, not less than 0.3;

[0115] Represents the floor function.

[0116] The fifth processing module is connected between the fourth processing module and the storage module for separating and 、 、 The inlet and outlet of the fifth processing module are connected across the third bypass valve 23 to bypass the fifth processing module under set conditions. The gas enters the storage module directly from the fourth processing module.

[0117] The fifth processing module includes: a fourth valve 11, a column separation chamber 13, a screw pump 15 and Chromatographic detector 20.

[0118] The state of the fourth valve 11 is opposite to that of the third bypass valve 23, and is used to control the opening and closing of the path of the fifth processing module. When the fourth valve 11 is opened and the third bypass valve 23 is closed, the fifth processing module is put into use; when the fourth valve 11 is closed and the third bypass valve 23 is opened, the fifth processing module is bypassed.

[0119] Specifically, the column separation chamber 13 is used to separate and 、 、 When the gas Measured by comprehensive tester 4 middle 、 、 If one or more of the following do not meet the requirements of Table 1, the gas needs to enter the column separation chamber for separation. If all of the following meet the requirements of Table 1, the fifth processing module is bypassed. The gas enters the storage module directly from the fourth processing module.

[0120] In a preferred but non-limiting embodiment, the column separation chamber 13 comprises: a plurality of packed columns connected in series, wherein the packed columns are filled with a composite packing material composed of silica gel, ProparkQ + N, and Hitop Db. 、 、 、 Different from the adsorption capacity between filling materials, a small amount of residual air, 、 、 and Achieve separation.

[0121] The gas passes through the packed columns in sequence, and the last packed column is connected Chromatographic detector 20, can detect air, 、 、 、 , the measured gas components are sent to the background control system, which controls the seventh valve 16 and the switch of the screw pump 15 to automatically store the impurity gas into the impurity gas cylinder 19, Gas storage to the second Cylinder 18. If The air detected by the chromatograph 、 、 、 The occurrence of mutual mixing indicates that the column separation effect is reduced, and the composite filling material composed of silica gel, ProparkQ +N, and Hitop Db needs to be regenerated or replaced with a new composite filling material.

[0122] In a further preferred but non-limiting embodiment, as shown in Figure 5, the column separation chamber 13 includes: a first packing column 131, a second packing column 132, a third packing column 133 and a fourth packing column 134 connected in series in sequence; the first packing column 131 is provided with a first packing column inlet solenoid valve, the second packing column 132 is provided with a second packing column outlet solenoid valve, the third packing column 133 is provided with a third packing column inlet solenoid valve, and the fourth packing column 134 is provided with a fourth packing column outlet solenoid valve; a single packing column outlet valve is provided at the connection between the first packing column 131 and the second packing column 132 via a tee; a double packing column outlet valve is provided at the connection between the second packing column 132 and the third packing column 133 via a tee; and a triple packing column outlet valve is provided at the connection between the third packing column 133 and the fourth packing column 134 via a tee.

[0123] Column separation chamber 13 is connected The chromatographic detector 20 is also used to verify the In gas 、 、 The content selection is to select the number of packed columns and the column separation effect, and the control methods include but are not limited to, Comprehensive tester 4 test results display gas 、 、 The content is in the first range, and only the first filling column 131 needs to be put into the column separation chamber 13 to complete the purification. The first filling column inlet solenoid valve and the single filling column outlet valve of the column separation chamber 13 are opened, and the other valves of the column separation chamber 13 are closed. The gas is removed only through the first filling column 131 、 、 , no longer passing through the second filling column 132, the third filling column 133 and the fourth filling column 134, will remove 、 、 The time is reduced to 1 / 4.

[0124] Similarly, Comprehensive tester 4 test results display gas 、 、 The content is in the second range, and only the first filling column 131 and the second filling column 132 need to be put into the column separation chamber 13 to complete the purification. The first filling column inlet solenoid valve, the second filling column outlet solenoid valve and the double filling column outlet valve are opened, and the other valves of the column separation chamber 13 are closed. The gas is removed only through the first filling column 131 and the second filling column 132 、 、 , no longer passing through the third filling column 133 and the fourth filling column 134, will remove 、 、 The time is reduced to 1 / 2.

[0125] Similarly, Comprehensive tester 4 test results display gas 、 、 The content is in the third range, and the first filling column 131, the second filling column 132 and the third filling column 133 need to be put into the column separation chamber 13 to complete the purification. The first filling column inlet solenoid valve, the second filling column outlet solenoid valve, the third filling column inlet solenoid valve and the three filling column outlet valve are opened, and the other valves of the column separation chamber 13 are closed. The gas is removed only after passing through the first filling column 131, the second filling column 132 and the third filling column 133. 、 、 , no longer passes through the fourth packing column 134, and will remove 、 、 The time is reduced to 3 / 4.

[0126] like Comprehensive tester 4 test results display gas 、 、 The content is in the fourth interval, and all the first filling column 131, the second filling column 132, the third filling column 133 and the fourth filling column 134 need to be put into use to complete the purification. The first filling column inlet solenoid valve, the second filling column outlet solenoid valve, the third filling column inlet solenoid valve and the fourth filling column outlet solenoid valve of the column separation chamber 13 are opened, and the other valves of the column separation chamber 13 are closed. The gas passes through the first filling column 131, the second filling column 132, the third filling column 133 and the fourth filling column 134 to achieve deep removal 、 、 .

[0127] The interval division method includes, for example but not limited to, adding a safety margin to the processing capacity of a single membrane separation tank to set the interval length.

[0128] In a further preferred but non-limiting embodiment, the control background controls the switching of the first filling column 131, the second filling column 132, the third filling column 133 and the fourth filling column 134 according to the following formula:

[0129]

[0130] Where:

[0131] Indicates the number of filling column tanks that need to be invested;

[0132] express Comprehensive tester 4 test results 、 、 Content results;

[0133] express Gas purification targets, preferably but not limited to, are as shown in Table 1 、 、 Content requirements;

[0134] Indicates the processing capacity of a single packed column;

[0135] represents a natural constant;

[0136] Indicates the time the first packed column has been put into operation;

[0137] Indicates a safety margin, preferably, but not limited to, not less than 0.3;

[0138] Represents the floor function.

[0139] The storage module is used to store the purified Specifically, the storage module includes: a second valve 17 and a second The steel cylinder 18, and the connected seventh valve 16 and the impurity gas steel cylinder 19.

[0140] The second Cylinder 18 is used to store purified The impurity gas cylinder 19 is used to store the impurity gas Impurity gases outside the The gas in the impurity cylinder can be pumped into the column separation chamber 13 again through the second circulation pump 21 and the fifth valve for secondary separation to minimize the amount of impurities mixed in. content to further increase At this time, the third bypass valve 23 and the fourth valve 11 are closed.

[0141] When some gas is adsorbed by the filling material and is difficult to be separated, the screw pump 15 of the fifth processing module is started to vacuum the column separation chamber 13 to achieve the separation of gas. The order of the gas coming out of the column separation chamber 13 is air, 、 、 、 , that is, the gas that comes out last is .

[0142] The control background is used to control all valves in the highly adaptable sulfur hexafluoride gas purification control system to form different Gas path.

[0143] It is understandable that for the sake of convenience and clarity, the first In cylinder 1 Gas is not purified Gas, in the second Cylinder 18 Gas refers to the gas that has been purified Gases, other so-called Gas refers to the gas in the purification process gas.

[0144] It is worth noting that in the second processing module, the fourth processing module and the fifth processing module, the preferred embodiment of the present invention only introduces the technical means of changing the module's own path to shorten the purification time by dividing it into four sections, but the core concept of the present invention can be achieved by using more or fewer sections. The number of sections can depend on the The impurity content of the gas fluctuates. In an environment with small fluctuations, it is more appropriate to use fewer segments, and there is no need to frequently adjust the path and purification strategy. However, in an environment with a relatively large fluctuation range, for example, when the purification requirements vary due to different equipment commissioning times, the existing technology can only be set according to the maximum purification capacity. The present invention realizes the adaptive adjustment of the input path according to the purification requirements, which greatly improves the purification efficiency while ensuring the same purification effect.

[0145] As shown in FIG2 , Example 2 of the present invention provides a highly adaptable sulfur hexafluoride gas purification process control method, based on the highly adaptable sulfur hexafluoride gas purification process control system, comprising the following steps:

[0146] Step 1: remove the waste water in the first treatment module Solid particles and decomposition products in the gas, and drive the Gas enters other modules;

[0147] Step 2, The comprehensive tester detects the gas composition from the outlet of the first processing module, including: Gas purity, air, 、 、 , humidity, acidity, hydrolyzable fluoride and mineral oil content;

[0148] Step 3: Determine whether the acidity meets the Purification target, if it meets the requirements, the first bypass valve bypasses the second treatment module and continues to step 4. If it does not meet the requirements, the second treatment module is washed away. After removing the acidic impurities in the solution, proceed to step 4;

[0149] Step 4: Remove the third processing module After checking the moisture in the gas, determine whether the air content meets the requirements Purification target, if it meets the requirements, the second bypass valve bypasses the fourth treatment module and continues to step 5. If it does not meet the requirements, the fourth treatment module is separated. After the air, proceed to step 5;

[0150] Step 5, judge 、 、 Is the content in compliance If the purification target is met, the third bypass valve bypasses the fifth treatment module. The gas goes directly into the storage module from the fourth processing module. If it does not meet the requirements, the fifth processing module will separate it. and 、 and Then enter the storage module.

[0151] Preferably, the second, fourth and fifth processing modules adopt the same connection structure, and each comprises: a first subunit, a second subunit, a third subunit and a fourth subunit connected in series in sequence; the first subunit is provided with a first subunit inlet solenoid valve, the second subunit is provided with a second subunit outlet solenoid valve, the third subunit is provided with a third subunit inlet solenoid valve, and the fourth subunit is provided with a fourth subunit outlet solenoid valve; a single subunit outlet valve is provided at the connection between the first subunit and the second subunit via a tee; a double subunit outlet valve is provided at the connection between the second subunit and the third subunit via a tee; and a triple subunit outlet valve is provided at the connection between the third subunit and the fourth subunit via a tee.

[0152] Control the background, according to The impurities obtained by the comprehensive tester belong to the interval, and the corresponding number of sub-units are input.

[0153] Preferably, the control background controls the switching of the subunits using the following formula:

[0154]

[0155] Where:

[0156] Indicates the number of sub-units that need to be invested;

[0157] express Impurity content results obtained by comprehensive tester testing;

[0158] express Gas purification target;

[0159] Indicates the processing capacity of a single subunit;

[0160] represents a natural constant;

[0161] Indicates the time when the first subunit has been put into operation;

[0162] Indicates safety margin;

[0163] Represents the floor function.

[0164] The present disclosure may be a system, method and / or computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement various aspects of the present disclosure.

[0165] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A highly adaptable sulfur hexafluoride gas purification and control system, comprising: The first processing module, Comprehensive tester (4), second processing module, third processing module, fourth processing module, fifth processing module, storage module and control background; characterized in that: The first processing module is used to remove Solid particles and decomposition products in the gas, and drive the Gas enters other modules; The integrated tester (4) is connected to the outlet of the first processing module and is used to detect Gas purity and impurity content; The second processing module is connected to Between the integrated tester (4) and the third processing module, for washing away The inlet and outlet of the second treatment module are connected across the first bypass valve (6) to bypass the second treatment module under set conditions; The third processing module is connected between the second processing module and the fourth processing module, and is used to The gas is dried; The fourth processing module is connected between the third processing module and the fifth processing module for separating The inlet and outlet of the fourth processing module are connected to both ends of the second bypass valve (22) for bypassing the fourth processing module under set conditions; The fifth processing module is connected between the fourth processing module and the storage module for separating and 、 、 The inlet and outlet of the fifth processing module are connected across the third bypass valve (23) to bypass the fifth processing module under set conditions; The storage module is used to store the purified and impurity gases that cannot be evacuated; The control background is used to control all valves in the highly adaptable sulfur hexafluoride gas purification control system to form different Gas purification path.

2. A highly adaptable sulfur hexafluoride gas purification and control system according to claim 1, characterized in that: The first processing module includes: a first Cylinder (1), circulation pump (2) and adsorption chamber (3); First Cylinder (1) for storing the purified gas; The circulation pump (2) is connected to the first Between the steel cylinder (1) and the adsorption chamber (3), it is used to The gas flows in a highly adaptable sulfur hexafluoride gas purification control system to provide driving force; Adsorption chamber (3) is used for adsorption Solid particles and decomposition products in the gas.

3. The highly adaptable sulfur hexafluoride gas purification and control system according to claim 1, characterized in that: Comprehensive tester (4) is used to detect Gas purity, air, 、 、 , humidity, acidity, hydrolyzable fluoride and mineral oil content; The detection results are sent to the control background. The control background adaptively controls the switching of the second processing module, the third processing module, the fourth processing module, the fifth processing module and the storage module according to the different impurities detected in the gas, forming different gas paths and thus selecting different gas purification treatment methods.

4. The highly adaptable sulfur hexafluoride gas purification and control system according to claim 1, characterized in that: The second processing module comprises: a first valve (5) and an alkaline washing tank (7) connected to each other; The state of the first valve (5) is opposite to the state of the first bypass valve (6), and is used to control the opening and closing of the path of the second processing module. When the first valve (5) is opened and the first bypass valve (6) is closed, the second processing module is put into use; when the first valve (5) is closed and the first bypass valve (6) is opened, the second processing module is put into use. Gas purge path removal; The alkali washing tank (7) comprises: a plurality of alkali liquid tanks connected in series, which are used to wash away Acidic impurities in.

5. The highly adaptable sulfur hexafluoride gas purification and control system according to claim 1, characterized in that: The third processing module includes a drying chamber (8) for removing Moisture in gas; to be purified The gases all pass through the drying chamber (8).

6. The highly adaptable sulfur hexafluoride gas purification and control system according to claim 1, characterized in that: The fourth processing module includes: a third valve (9) and a membrane separation chamber (10) connected to each other; The state of the third valve (9) is opposite to the state of the second bypass valve (22), and is used to control the opening and closing of the path of the fourth processing module. When the third valve (9) is opened and the second bypass valve (22) is closed, the fourth processing module is put into use; when the third valve (9) is closed and the second bypass valve (22) is opened, the fourth processing module is cut off from the gas path; The membrane separation chamber (10) comprises: a plurality of membrane separation tanks connected in series for separating With nitrogen and oxygen.

7. The highly adaptable sulfur hexafluoride gas purification and control system according to claim 1, characterized in that: The fifth processing module includes: a fourth valve (11), a column separation chamber (13), a screw pump (15) and Chromatographic detector (20); The state of the fourth valve (11) is opposite to the state of the third bypass valve (23), and is used to control the opening and closing of the path of the fifth processing module. When the fourth valve (11) is opened and the third bypass valve (23) is closed, the fifth processing module is put into use; when the fourth valve (11) is closed and the third bypass valve (23) is opened, the fifth processing module is bypassed; The column separation chamber (13) is used to separate and 、 and 。 8. The highly adaptable sulfur hexafluoride gas purification and control system according to claim 1, characterized in that: The storage module includes: a second valve (17) and a second A steel cylinder (18), and a seventh valve (16) and an impurity gas cylinder (19) connected thereto; The second The cylinder (18) is used to store the purified The impurity gas cylinder (19) is used to store Foreign impurity gases; The gas in the impurity cylinder (19) can be pumped into the column separation chamber (13) again through the second circulation pump (21) and the fifth valve for secondary separation.

9. A highly adaptable sulfur hexafluoride gas purification and control system according to claim 8, characterized in that: To be purified The gas passes through the packed columns in sequence, and the last packed column is connected Chromatographic detector (20), which can detect air, 、 、 and , the measured gas components are sent to the background control system, which controls the seventh valve (16) and the switch of the screw pump (15) to automatically store the impurity gas in the impurity gas cylinder (19), Gas storage to the second Steel cylinders (18).

10. The highly adaptable sulfur hexafluoride gas purification and control system according to claim 1, characterized in that: The second, fourth and fifth processing modules have the same connection structure, each comprising: a first subunit, a second subunit, a third subunit and a fourth subunit connected in series in sequence; the first subunit is provided with a first subunit inlet solenoid valve, the second subunit is provided with a second subunit outlet solenoid valve, the third subunit is provided with a third subunit inlet solenoid valve, and the fourth subunit is provided with a fourth subunit outlet solenoid valve; A single subunit outlet valve is set at the connection between the first subunit and the second subunit via a tee; a double subunit outlet valve is set at the connection between the second subunit and the third subunit via a tee; and a triple subunit outlet valve is set at the connection between the third subunit and the fourth subunit via a tee.

11. A highly adaptable sulfur hexafluoride gas purification treatment control method, based on the highly adaptable sulfur hexafluoride gas purification treatment control system according to any one of claims 1 to 10, characterized in that: The following steps are involved: Step 1: remove the waste water in the first treatment module. Solid particles and decomposition products in the gas, and drive the Gas enters other modules; Step 2, The integrated tester (4) detects the gas composition from the outlet of the first processing module, including: Gas purity, air, 、 、 , humidity, acidity, hydrolyzable fluoride and mineral oil content; Step 3: Determine whether the acidity meets the requirements Purification target, if it meets the requirements, the first bypass valve (6) bypasses the second treatment module and continues to perform step 4, if it does not meet the requirements, the second treatment module is washed away After removing the acidic impurities in the solution, proceed to step 4; Step 4: Remove the third processing module After checking the moisture in the gas, determine whether the air content meets the requirements Purification target, if it meets the requirements, the second bypass valve (22) bypasses the fourth treatment module and continues to perform step 5, if it does not meet the requirements, the fourth treatment module is separated After the air, proceed to step 5; Step 5, judge 、 、 Is the content in compliance If the purification target is met, the third bypass valve (23) bypasses the fifth treatment module. The gas goes directly into the storage module from the fourth processing module. If it does not meet the requirements, the fifth processing module will separate it. and 、 and Then enter the storage module.

12. A highly adaptable sulfur hexafluoride gas purification control method according to claim 11, characterized in that: The second, fourth and fifth processing modules adopt the same connection structure and each includes: a first subunit, a second subunit, a third subunit and a fourth subunit connected in series in sequence; the first subunit is provided with a first subunit inlet solenoid valve, the second subunit is provided with a second subunit outlet solenoid valve, the third subunit is provided with a third subunit inlet solenoid valve, and the fourth subunit is provided with a fourth subunit outlet solenoid valve; a single subunit outlet valve is provided at the connection between the first subunit and the second subunit via a tee; a double subunit outlet valve is provided at the connection between the second subunit and the third subunit via a tee; and a triple subunit outlet valve is provided at the connection between the third subunit and the fourth subunit via a tee. Control the background, according to The integrated tester (4) obtains the interval to which the impurities belong and inputs the corresponding number of sub-units.

13. A highly adaptable sulfur hexafluoride gas purification control method according to claim 12, characterized in that: The control background controls the switching of subunits using the following formula: ， Where: Indicates the number of sub-units that need to be invested; express The impurity content results obtained by the comprehensive tester (4); express Gas purification target; Indicates the processing capacity of a single subunit; represents a natural constant; Indicates the time when the first subunit has been put into operation; Indicates safety margin; Represents the floor function.

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