Oil sampling tank and system for oil sample collection of transformer and operation method
By designing the oil extraction tank for oil sample collection in transformer and a built-in oil sample extraction device, it realizes the independent collection of oil samples before the robot arrives, solving the problems of low oil extraction efficiency and major safety hazards in the existing technology, and improving the collection efficiency and safety.
Patent Information
- Application Number
- CN202411740807.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-02-25
AI Technical Summary
The existing automated transformer oil sample collection methods are poor in safety and have low oil extraction efficiency, so frequent oil circuit docking is required.
A transformer oil sample collection tank is designed, with a built-in oil sample extraction device, including a syringe rotating mechanism and a syringe docking mechanism, which can independently collect oil samples before the oil sample robot arrives. After the robot arrives, it only needs to remove the syringe.
It greatly improves the efficiency of oil extraction, avoids safety hazards caused by frequent oil circuit docking, and ensures the safety and efficiency of the collection process.
Smart Images
Figure CN119510057A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of electric power robots, and in particular to an oil sampling box, a system and an operation method for collecting transformer oil samples. Background Art
[0002] The statements in this section merely provide background art related to the present invention and do not necessarily constitute prior art.
[0003] The transformer is one of the key equipment in the power system, and its operating status directly affects the safety and stability of the power grid. Regular collection and analysis of transformer oil samples can detect the oil quality inside the transformer, and timely discover and diagnose abnormal faults such as arc discharge and overheating inside the equipment, thereby providing early warning and avoiding major accidents.
[0004] The existing automated transformer oil sample collection method mainly combines robots and oil tanks to collect oil. The oil tank only provides an oil outlet interface. Every time the oil is collected, the robot needs to walk to the oil tank to connect the pipeline and then collect the oil. The oil line needs to be connected every time, which has poor safety. Summary of the invention
[0005] In order to address the deficiencies in the prior art, the present invention provides an oil sampling tank, system and operating method for collecting transformer oil samples. The oil sampling extraction device in the oil sampling tank can extract the oil sample in advance and circulate it through a circulating pump and various branches. After the robot arrives, it only needs to take away the syringe that has completed the oil sample collection, avoiding the safety hazards caused by frequent oil circuit docking.
[0006] In order to achieve the above object, the present invention adopts the following technical solution: In a first aspect, the present invention provides an oil sampling box for collecting transformer oil samples.
[0007] An oil sampling box for collecting transformer oil samples comprises: an oil sampling box body and an oil sampling extraction device located in the oil sampling box body; The oil sample extraction device comprises a syringe rotating mechanism and a syringe docking mechanism, a plurality of syringes for oil sample extraction are arranged on the syringe rotating mechanism, and the syringe docking mechanism is arranged on the upper part of the syringe rotating mechanism, comprising an upper and lower telescopic mechanism and a syringe docking rod; The upper and lower telescopic mechanism is used to drive the syringe docking rod to move. The interior of the syringe docking rod is an oil passage. The lower part of the syringe docking rod is connected to the oil outlet branch of the transformer through a pipeline. The oil outlet of the syringe docking rod is used to cooperate with the syringe barrel head of the syringe.
[0008] As a further limitation of the first aspect of the present invention, the oil outlet of the syringe docking rod is a tapered groove, and a sealing rubber ring is installed at the bottom of the tapered groove.
[0009] As a further limitation of the first aspect of the present invention, the syringe rotating mechanism includes: a syringe rotating seat and a rotating base, the rotating base is fixed in the oil extraction tank body, the syringe rotating seat is connected to the rotating base, and is driven by a motor to rotate around the rotating base, the upper and lower telescopic mechanism is fixed on the syringe rotating seat, and the syringe docking rod is connected to the movable end of the upper and lower telescopic mechanism.
[0010] As a further limitation of the first aspect of the present invention, the oil sample extraction device further includes: a plurality of oil sample pushing mechanisms, the plurality of oil sample pushing mechanisms are evenly arranged on the syringe rotating seat, each group of oil sample pushing mechanisms includes a syringe pushing module, a piston pushing seat, a syringe clamping seat, a syringe, a syringe pushing module limit sensor, a syringe clamping mechanism and an online detection sensor; The syringe pushing module, the syringe clamping seat, the syringe, the syringe pushing module limit sensor, the syringe clamping mechanism and the online detection sensor are all fixed on the syringe rotating seat. The online sensor is used to detect whether the syringe is in place. The piston pushing seat is connected to the movable end of the syringe pushing module. The syringe is limited and fixed by the syringe clamping mechanism and the syringe clamping seat.
[0011] As a further limitation of the first aspect of the present invention, the syringe clamping mechanism includes a clamping motor, a syringe claw, a claw gear assembly and a syringe claw frame. The clamping motor, the syringe claw and the claw gear assembly are arranged on the syringe claw frame. The clamping motor drives the claw gear assembly to move to drive the paired syringe claws to move in the same direction, thereby clamping or releasing the syringe syringe.
[0012] As a further limitation of the first aspect of the present invention, the syringe clamping seat is provided with a D-shaped opening groove for the syringe syringe, and a limiting groove is provided at the lower part for limiting the movement of the syringe, and the online detection sensor is installed above the syringe clamping seat.
[0013] As a further limitation of the first aspect of the present invention, the piston pushing seat is arranged on the syringe pushing module and is provided with a piston D-shaped opening groove. The piston in the syringe is connected to the piston handle, and the piston D-shaped opening groove is used to fit with the piston handle to push the piston.
[0014] As a further limitation of the first aspect of the present invention, the syringe is made of glass, the inner surface of the syringe claw is designed to be an arc-shaped structure that matches the outer wall of the syringe, and is provided with a rubber gasket.
[0015] As a further limitation of the first aspect of the present invention, the fuel tank further includes a characteristic marker, a fuel tank door, a fixing rod, a grounding bar and a control unit; A silicone waterproof strip is installed on the inner surface of the fuel tank door, a flat lock is installed on the fuel tank door, the fuel tank door is connected to the fuel tank body, a grounding bar is provided on the outer side of the fuel tank body, a control unit is installed in the fuel tank body, and a characteristic marker is fixed above the fuel tank body.
[0016] As a further limitation of the first aspect of the present invention, the oil tank further comprises an oil tank lifting door, the oil tank lifting door is fixed on the door frame of the oil tank body, and the oil tank lifting door comprises a lifting door, a limit switch, a through-screw motor, a through-screw and a lifting door guide rail; The lifting door guide rail and the limit switch are arranged on the door frame of the oil tank body. The lifting door is slidably connected to the lifting door guide rail. The through-screw motor is fixed on the oil tank body. The output shaft of the through-screw motor is connected to the through-type screw. The through-type screw is installed on the lifting door. The output shaft of the through-screw motor rotates, driving the through-type screw to move up and down, thereby driving the lifting door to rise and fall along the lifting door guide rail.
[0017] As a further limitation of the first aspect of the present invention, the oil extraction tank further includes an oil extraction pipeline assembly, the oil extraction pipeline assembly is installed in the oil extraction tank body, the lower part of the oil extraction pipeline assembly is divided into three parts and connected with the upper oil extraction branch, the middle oil extraction branch and the lower oil extraction branch of the transformer, and returns to the transformer through the circulation pump and the return oil branch; The upper oil extraction branch, the middle oil extraction branch and the lower oil extraction branch are all equipped with solenoid valves and ball valves. The solenoid valve adopts a normally closed valve. The circulating pump is installed at the front end of the return oil branch to realize the circulation of the oil in the upper oil extraction branch, the middle oil extraction branch and the lower oil extraction branch of the transformer and the transformer, so as to obtain qualified oil samples.
[0018] In a second aspect, the present invention provides a transformer oil sample collection system, comprising the transformer oil sample collection oil collection box as described in the first aspect of the present invention and an oil collection robot used in conjunction with the transformer oil sample collection oil collection box.
[0019] In a third aspect, the present invention provides an operation method of an oil sampling box for collecting transformer oil samples, using the oil sampling box for collecting transformer oil samples described in the first aspect of the present invention, comprising the following process: The oil extraction pipeline in the oil extraction tank is connected, the syringe rotating mechanism rotates, a suitable syringe is selected, the syringe docking mechanism docks, and the oil sampling device starts to collect oil samples; Extract transformer oil sample to flush pipeline, return oil flows back to transformer through oil return pipeline, then flush the first syringe and corresponding pipeline several times, and take oil from the first syringe; The other syringes are flushed and oil sampled in turn until the set number of syringes have finished collecting oil, and then the oil collection robot arrives and takes away the syringes.
[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention innovatively designs an oil collection box for transformer oil sample collection, comprising an oil collection box body and an oil sample extraction device located in the oil collection box body, wherein the oil sample extraction device comprises a syringe rotating mechanism and a syringe docking mechanism, wherein a plurality of syringes for oil sample extraction are arranged on the syringe rotating mechanism, and the syringe docking mechanism is arranged on the upper part of the syringe rotating mechanism, so that the oil can be autonomously collected before the oil collection robot arrives, and the robot can directly take away the syringe after the arrival, thereby greatly improving the efficiency of oil collection work, and there is no need to dock the oil collection pipeline with the oil collection robot, thereby avoiding the occurrence of safety hazards.
[0021] 2. The present invention innovatively designs an oil tank for collecting transformer oil samples, which solves the problem of low oil collection efficiency of existing robots and the safety hazards caused by frequent interface docking. The oil sample extraction device in the oil tank can extract oil samples in advance and circulate them through a circulating pump and various branches. After the robot arrives, it only needs to take away the syringe that has completed oil sample collection, avoiding the safety hazards caused by frequent oil circuit docking and greatly improving the efficiency of oil collection.
[0022] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.
[0024] Figure 1 This is a schematic diagram of the structure of the oil sampling box for transformer oil sample collection in Example 1 of the present invention; Figure 2 This is a schematic diagram of the overall structure of the oil tank in Example 1 of the present invention; Figure 3 This is a schematic diagram of the partial structure of the rear part of the fuel tank in Example 1 of the present invention; Figure 4 This is a schematic diagram of the overall structure of the oil sample extraction device in Example 1 of the present invention; Figure 5 It is a schematic diagram of the local structure of the oil tank in Example 1 of the present invention; Among them; 101, characteristic marker; 102, fixing rod; 103, base; 104, limit switch; 105, oil sample extraction device; 105-1, piston push seat; 105-2, syringe clamping seat; 105-3, syringe; 105-4, clamping motor; 105-5, syringe clamping claw; 105-6, clamping claw gear assembly; 105-7, syringe clamping claw frame; 105-8, upper and lower telescopic mechanism; 105-9, syringe docking rod; 105-901, sealing rubber ring; 105-902, conical groove; 105-10, online detection sensor; 105-11, syringe push module; 105-12, syringe rotating seat; 105-13, rotating base; 105-14, syringe push module limit sensor; 106. Fuel tank access lift door; 107. Fuel tank access body; 108. Fuel tank access door; 109. Flat lock; 110. Grounding bar; 111. Transformer upper branch; 112. Transformer middle branch; 113. Transformer lower branch; 114. Circulation pump; 115. Oil return branch; 116. Ball valve; 117. Solenoid valve; 118. Oil access branch; 119. Control unit; 120. Through-screw motor; 121. Through-screw; 122. Lift door guide rail; 123. Fuel tank access door frame. DETAILED DESCRIPTION
[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0026] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.
[0027] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.
[0028] Embodiment 1: As described in the background technology, in the current transformer oil sampling automatic oil extraction system, the oil circuit needs to be connected every time, which is less safe; moreover, the existing oil extraction robot generally carries multiple oil extraction syringes, and after the oil circuit is connected, it takes a long time to extract the oil sample, and the oil extraction efficiency is low. In view of the above problems, this implementation method proposes an oil extraction box for transformer oil sampling, such as Figure 1 , Figure 2As shown, the oil tank mainly includes an oil tank body 107, a characteristic marker 101, an oil sample extraction device 105, an oil tank lifting door 106, an oil tank door 108, a fixing rod 102, an oil extraction pipeline assembly, a grounding bar 110, a control unit 119, etc. The oil tank is installed on a base 103 (the base 103 is arranged on the ground), a silicone waterproof strip is installed on the inner surface of the oil tank door 108, a flat lock 109 is installed on the oil tank door 108, the oil tank door 108 is structurally connected to the oil tank body 107 and pressed to achieve a waterproof function, a grounding bar 110 is arranged on the outer side of the oil tank body 107 to achieve grounding, and a control unit 119 is installed in the oil tank to control and detect the operating status of the oil tank and communicate with the host computer.
[0029] The characteristic marker 101 is fixed above the oil tank body 107 for the laser radar of the oil extraction robot to perform characteristic recognition, so as to locate and navigate the oil extraction tank and achieve docking between the oil extraction robot and the oil extraction tank when extracting oil.
[0030] The oil sample extraction device 105 is arranged in the oil extraction tank. Figure 4 As shown, the oil sample extraction device 105 includes an oil sample pushing device, a syringe rotating mechanism, and a syringe docking mechanism.
[0031] The syringe rotating mechanism includes a syringe rotating seat 105-12 and a rotating base 105-13. The rotating base 105-13 is fixed in the oil tank body 107. The syringe rotating seat 105-12 is connected to the rotating base 105-13 and is driven by a motor to rotate around the rotating base 105-13.
[0032] The syringe docking mechanism is arranged on the upper part of the syringe rotating mechanism, and includes an upper and lower telescopic mechanism 105-8 and a syringe docking rod 105-9. The upper and lower telescopic mechanism 105-8 is fixed on the syringe rotating seat 105-12, and the syringe docking rod 105-9 is connected to the movable end of the upper and lower telescopic mechanism 105-8.
[0033] In this implementation, the upper and lower telescopic mechanism 105-8 can be telescopically moved up and down by 30 mm, driving the syringe docking rod 105-9 to move together. The interior of the syringe docking rod 105-9 is an oil passage, and the lower part is connected to the oil outlet of the oil extraction pipeline assembly through a PU tube. The oil outlet is a conical groove, which can be matched and connected with the syringe 105-3 syringe head structure. A sealing rubber ring 105-901 is installed at the bottom of the conical groove 105-902, which plays a role in preventing oil leakage during docking.
[0034] The oil sample pushing device is evenly arranged on the syringe rotating seat 105-12, and includes six groups of structures, each group of structures includes a syringe pushing module 105-11, a piston pushing seat 105-1, a syringe clamping seat 105-2, a syringe 105-3, a syringe pushing module limit sensor 105-14, a syringe clamping mechanism, and an online detection sensor 105-10.
[0035] The syringe pushing module 105-11 includes a motor, a lead screw, a guide rail, a structural body, and a syringe pushing module limit sensor 105-14. The syringe pushing module 105-11 pushes the oil sample of the syringe 105-3 in and out, and pushes the oil sample smoothly and accurately, and is limited by the limit sensor.
[0036] The syringe clamping mechanism includes a clamping motor 105-4, a syringe claw 105-5, a claw gear assembly 105-6, and a syringe claw frame 105-7. The clamping motor 105-4, the syringe claw 105-5, and the claw gear assembly 105-6 are arranged on the syringe claw frame 105-7. The clamping motor 105-4 drives the claw gear assembly 105-6 to move, driving the paired syringe claws 105-5 to move in the same direction to clamp or release the syringe 105-3. The inner surface of the syringe claw 105-5 is designed to be an arc-shaped mechanism that matches the outer wall of the syringe, and is attached with a rubber gasket, which acts as a buffer during clamping to prevent the syringe 105-3 from being damaged.
[0037] The syringe clamping seat 105-2 is provided with a syringe syringe D-shaped opening groove, and a limit groove is provided at the bottom to limit the syringe movement of the syringe 105-3 when the push piston moves. An online detection sensor 105-10 is provided above the syringe clamping seat 105-2 to detect whether the syringe 105-3 is installed in place.
[0038] The piston push seat 105-1 is arranged on the syringe push module 105-11, and is provided with a piston D-shaped opening groove and a U-shaped notch. The piston in the syringe 105-3 of this implementation is connected to the piston handle. The piston D-shaped opening groove is convenient for fitting with the piston handle to push the piston, and the U-shaped notch is used for taking and placing the syringe 105-3. The syringe 105-3 is made of glass material, which is convenient for observing the internal liquid.
[0039] The oil tank lifting door 106 is fixed on the door frame of the oil tank body 107. Figure 5 As shown, it includes a lifting door, a limit switch 104, a through-screw motor 120, a through-screw 121, and two sets of lifting door guide rails 122 arranged in parallel; The lifting door guide rail 122 and the limit switch 104 are arranged on the oil tank door frame 123, the through-screw motor 120 is fixed on the oil tank body 107, the through-type screw 121 is installed on the lifting door, the lifting door is slidably connected to the lifting door guide rail 122, the output shaft of the through-screw motor 120 is connected to the through-type screw 121, the output shaft of the through-screw motor 120 rotates, driving the through-type screw 121 to move up and down, and then driving the lifting door to rise and fall along the lifting door guide rail 122.
[0040] like Figure 3 As shown, the oil extraction pipeline assembly is installed in the oil extraction box, the upper part is connected to the oil inlet of the oil sample extraction device 105, and the lower part is divided into three parts connected to the upper, middle and lower oil extraction branches of the transformer, and returns to the transformer through the oil return branch 115. The oil extraction pipeline assembly includes the upper branch 111 of the transformer, the middle branch 112 of the transformer, the lower branch 113 of the transformer, the circulation pump 114, the oil return branch 115, the ball valve 116, the solenoid valve 117, the oil extraction branch 118, etc., and each branch is equipped with a solenoid valve 117 and a ball valve 116, and the oil circuit is manually or automatically opened and closed. The solenoid valve 117 adopts a normally closed valve. A circulation pump 114 is installed at the front end of the oil return branch 115 to realize the circulation of the oil in the upper, middle and lower branches of the transformer and the oil in the transformer, so as to obtain a qualified oil sample. The oil extraction pipeline assembly can realize the connection between the transformer upper branch 111, the transformer middle branch 112, the transformer lower branch 113 and the oil extraction branch 118, and complete the collection of three-way oil samples.
[0041] The above-mentioned fuel tank taking operation method of this implementation includes: The oil extraction pipeline in the oil extraction tank is connected, the syringe rotating mechanism rotates, a suitable syringe is selected, the syringe docking mechanism docks, and the oil sampling device starts to collect oil samples; Flushing pipeline with oil sample, the return oil flows back to the transformer through the oil return pipeline, and then flushing the first syringe and the corresponding pipeline for multiple times, and then taking oil from the first syringe; The other syringes are flushed and oil sampled in turn until the set number of syringes have finished collecting oil, and then the oil collection robot arrives and takes away the syringes.
[0042] Embodiment 2: The present implementation provides a transformer oil sample collection system, comprising the transformer oil sample collection oil collection box as described in Embodiment 1 of the present invention and an oil collection robot used in conjunction with the transformer oil sample collection oil collection box.
[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An oil sampling box for collecting transformer oil samples, characterized in that: include: An oil tank body and an oil sample extraction device located in the oil tank body; The oil sample extraction device comprises a syringe rotating mechanism and a syringe docking mechanism, a plurality of syringes for oil sample extraction are arranged on the syringe rotating mechanism, and the syringe docking mechanism is arranged on the upper part of the syringe rotating mechanism, comprising an upper and lower telescopic mechanism and a syringe docking rod; The upper and lower telescopic mechanism is used to drive the syringe docking rod to move. The interior of the syringe docking rod is an oil passage. The lower part of the syringe docking rod is connected to the oil outlet branch of the transformer through a pipeline. The oil outlet of the syringe docking rod is used to cooperate with the syringe barrel head of the syringe.
2. The oil sampling box for transformer oil sampling as claimed in claim 1, characterized in that: The oil outlet of the syringe docking rod is a tapered groove, and a sealing rubber ring is installed at the bottom of the tapered groove.
3. The oil sampling box for transformer oil sampling as claimed in claim 1, characterized in that: The syringe rotating mechanism includes: a syringe rotating seat and a rotating base, the rotating base is fixed in the oil extraction tank body, the syringe rotating seat is connected to the rotating base, and is driven by a motor to rotate around the rotating base, the upper and lower telescopic mechanism is fixed on the syringe rotating seat, and the syringe docking rod is connected to the movable end of the upper and lower telescopic mechanism.
4. The oil sampling box for transformer oil sampling as claimed in claim 3, characterized in that: The oil sample extraction device further includes: a plurality of oil sample pushing mechanisms, the plurality of oil sample pushing mechanisms are evenly arranged on the syringe rotating seat, each oil sample pushing mechanism includes a syringe pushing module, a piston pushing seat, a syringe clamping seat, a syringe, a syringe pushing module limit sensor, a syringe clamping mechanism and an online detection sensor; The syringe pushing module, the syringe clamping seat, the syringe, the syringe pushing module limit sensor, the syringe clamping mechanism and the online detection sensor are all fixed on the syringe rotating seat. The online sensor is used to detect whether the syringe is in place. The piston pushing seat is connected to the movable end of the syringe pushing module. The syringe is limited and fixed by the syringe clamping mechanism and the syringe clamping seat.
5. The oil sampling box for transformer oil sampling as claimed in claim 4, characterized in that: The syringe clamping mechanism comprises a clamping motor, a syringe clamping claw, a clamping claw gear assembly and a syringe clamping claw frame, wherein the clamping motor, the syringe clamping claw and the clamping claw gear assembly are arranged on the syringe clamping claw frame; The output shaft of the clamping motor is connected to the claw gear assembly, and the claw gear assembly is connected to the syringe claw. The clamping motor drives the claw gear assembly to move to drive the paired syringe claws to move in the same direction, thereby clamping or releasing the syringe barrel.
6. The oil sampling box for transformer oil sampling as claimed in claim 4, characterized in that: The syringe clamping seat is provided with a D-shaped opening groove for the syringe syringe, and a limiting groove is provided at the lower part for limiting the movement of the syringe. The online detection sensor is installed above the syringe clamping seat.
7. The oil sampling box for transformer oil sampling as claimed in claim 4, characterized in that: A piston D-shaped opening groove is provided on the piston pushing seat, and the piston in the syringe is connected to the piston handle. The piston D-shaped opening groove is used to fit with the piston handle to push the piston.
8. The oil sampling box for transformer oil sampling as claimed in claim 4, characterized in that: The syringe is made of glass, and the inner surface of the syringe clamp is designed to be an arc-shaped mechanism that matches the outer wall of the syringe, and is provided with a rubber gasket.
9. The oil sampling box for transformer oil sampling as claimed in any one of claims 1 to 8, characterized in that: The oil tank also includes a characteristic marker, an oil tank door, a fixing rod, a grounding bar and a control unit; A silicone waterproof strip is installed on the inner surface of the fuel tank door, a flat lock is installed on the fuel tank door, the fuel tank door is connected to the fuel tank body, a grounding bar is provided on the outer side of the fuel tank body, a control unit is installed in the fuel tank body, and a characteristic marker is fixed above the fuel tank body.
10. The oil sampling box for transformer oil sampling according to any one of claims 1 to 8, characterized in that: The oil tank further comprises an oil tank lifting door, the oil tank lifting door is fixed on the door frame of the oil tank body, and the oil tank lifting door comprises a lifting door, a limit switch, a through-screw motor, a through-screw and a lifting door guide rail; The lifting door guide rail and the limit switch are arranged on the door frame of the oil tank body. The lifting door is slidably connected to the lifting door guide rail. The through-screw motor is fixed on the oil tank body. The output shaft of the through-screw motor is connected to the through-type screw. The through-type screw is installed on the lifting door. The output shaft of the through-screw motor rotates, driving the through-type screw to move up and down, thereby driving the lifting door to rise and fall along the lifting door guide rail.
11. The oil sampling box for transformer oil sampling according to any one of claims 1 to 8, characterized in that: The oil extraction tank also includes an oil extraction pipeline assembly, which is installed in the oil extraction tank body. The lower part of the oil extraction pipeline assembly is divided into three parts, which are connected to the upper oil extraction branch, the middle oil extraction branch and the lower oil extraction branch of the transformer, and return oil to the transformer through the circulation pump and the return oil branch. The upper oil extraction branch, the middle oil extraction branch and the lower oil extraction branch are all equipped with solenoid valves and ball valves. The solenoid valve adopts a normally closed valve. The circulating pump is installed at the front end of the return oil branch to realize the circulation of the upper oil extraction branch, the middle oil extraction branch and the lower oil extraction branch of the transformer and the oil in the transformer.
12. A transformer oil sample collection system, characterized in that: It comprises the oil collection box for collecting transformer oil samples as described in any one of claims 1 to 11 and an oil collection robot used in conjunction with the oil collection box for collecting transformer oil samples.
13. A method for operating an oil tank for collecting transformer oil samples, characterized in that: The method of using the transformer oil sample collection box according to any one of claims 1 to 11 comprises the following steps: The oil extraction pipeline in the oil extraction tank is connected, the syringe rotating mechanism rotates, a suitable syringe is selected, the syringe docking mechanism docks, and the oil sampling device starts to collect oil samples; Extract transformer oil sample to flush pipeline, return oil flows back to transformer through oil return pipeline, then flush the first syringe and corresponding pipeline several times, and take oil from the first syringe; The other syringes are flushed and oil sampled in turn until the set number of syringes have finished collecting oil, and then the oil collection robot arrives and takes away the syringes.