Transformer oil sample leading-out device and method and robot

Abstract

The invention belongs to the technical field of power robots. The transformer oil sample leading-out device comprises an oil taking box body and an electric door, the oil taking box body comprises an oil taking box front door assembly, and the oil taking box front door assembly comprises a front door frame, a supporting seat, a lead screw, a guide rail, a coupler and a motor; the lead screw is arranged on the supporting seat in a penetrating mode, the output end of the motor is connected with one end of the lead screw through a coupler, and the other end of the lead screw is detachably connected with the unlocking ring. A sliding block of the electric door is connected with the guide rail in a sliding mode, the sliding block is connected with the sliding block base, a lead screw penetrates through a nut on the sliding block base, and the sliding block base can be driven by the lead screw to open the electric door so that the oil taking connector can be exposed out. According to the invention, the purposes of reducing the butt joint difficulty of the oil taking ports and improving the butt joint success rate are achieved, the oil sample collection workload is reduced, the oil sample collection efficiency is improved, and the loss of transformer oil in the sampling process is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power robots, and in particular to a transformer oil sample extraction device, method and robot. 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] Transformer oil, as an insulating medium, provides good insulation between the windings of the power transformer and between the windings and the iron core and the casing. At the same time, transformer oil is also a heat dissipation medium, transferring the heat of the iron core and windings to the environment through heat exchange. Transformer oil is a hydrocarbon composed of chemical bonds of different bond energies. Under normal operating conditions, transformer oil and solid insulating materials are affected by electricity, heat, moisture and oxygen, and slowly age over time, producing a small amount of hydrogen and low molecular hydrocarbon gas during the aging process. When the transformer is operating in a fault state, the oil temperature around the fault point rises, the chemical bonds of the transformer oil break, and a variety of characteristic gases are formed. As the fault develops, the characteristic gases generated continue to diffuse in the oil. Therefore, offline or online monitoring methods are used to analyze the dissolved gases in the oil to effectively detect faults inside the transformer and track the development of the fault. Therefore, oil-filled equipment in the substation, such as transformers and reactors, need to take oil regularly for oiling tests during daily operation and maintenance. However, the analysis accuracy of the oil chromatography online device is greatly affected by factors such as instrument performance and environment. At present, manual offline detection is still the main method for transformer fault diagnosis.

[0004] There are certain safety risks when taking oil samples from transformers manually, especially when the oil chromatogram online detection device finds abnormal data that needs further verification. Due to the rapid evolution of ultra-high voltage and extra-high voltage equipment failures, the safety risk of the operation is high. The use of transformer oil sampling robots to replace manual operations and realize automatic oil sampling can improve the safety of on-site workers. However, the forms and positions of transformer oil sampling valve ports are diverse. Simply relying on robots to collect oil samples from the oil sampling valve ports has poor operational adaptability and it is difficult to ensure the quality of oil sampling; it is dangerous for robots to approach transformers to collect oil samples, and the robots must cross the oil unloading pool to approach the oil filling equipment, which also requires high passability of the robots. Summary of the invention

[0005] In order to address the deficiencies in the prior art, the present invention provides a transformer oil sample extraction device, method and robot, which provide a unified standard oil sample collection docking interface for the oil sample collection robot, regardless of the installation position and form of the transformer oil extraction valve port. There is a certain safety distance between the device and the transformer, and the device can be arranged in a place that is easy for the robot to pass through. Auxiliary functional components can be added according to the operating characteristics of the oil sample collection robot to achieve the purpose of reducing the difficulty of oil extraction port docking and improving the docking success rate.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: In a first aspect, the present invention provides a transformer oil sample extraction device.

[0007] A transformer oil sample extraction device comprises: an oil extraction tank body and an electric door, wherein the oil extraction tank body comprises an oil extraction tank front door assembly, and the oil extraction tank front door assembly comprises a front door frame, a support seat, a lead screw, a guide rail, a coupling and a motor; The lead screw is passed through the support seat, the output end of the motor is connected to one end of the lead screw through a coupling, and the other end of the lead screw is detachably connected to an unlocking ring; The slider of the electric door is slidably connected to the guide rail, the slider is connected to the slider seat, the lead screw passes through the nut on the slider seat, and the slider seat can open the electric door to leak out the oil extraction joint under the drive of the lead screw.

[0008] As a further limitation of the first aspect of the present invention, the support seat includes a front support seat and a rear support seat, the lead screw is passed through the front support seat and the rear support seat, the guide rail includes a main guide rail and an auxiliary guide rail parallel to each other, the slider includes a left slider and a right slider, the slider seat includes a left slider seat and a right slider seat, a nut is connected to the left slider seat, the left slider is connected to the left slider seat, and the right slider is connected to the right slider seat; The left slider seat is slidably connected to the main guide rail, the right slider seat is slidably connected to the auxiliary guide rail, a sensor mounting plate is connected to the front door frame on the side of the main guide rail, and a photoelectric sensor is connected to the sensor mounting plate.

[0009] As a further limitation of the first aspect of the present invention, the space of the front door frame accommodates the oil extraction joint, and the front door frame includes an inward protrusion and an outward protrusion, respectively, the inward protrusion is a box structure, which is used to connect the oil extraction port and the oil tank oil circuit assembly through the opened through hole, and the outward protrusion is an inclined structure that cooperates with the electric door.

[0010] As a further limitation of the first aspect of the present invention, the electric door further comprises: an electric door frame, a left transverse support rod, a right transverse support rod, and a travel switch trigger plate, wherein the travel switch trigger plate and the nut are both connected to the left slider seat, one side of the bottom of the electric door frame is connected to the left slider seat through the left transverse support rod, and the other side of the bottom of the electric door frame is connected to the right slider seat through the right transverse support rod; The left transverse support rod passes through a vertical opening on one side of the box structure, and the right transverse support rod passes through a vertical opening on the other side of the box structure. Waterproof brushes are provided on the vertical openings.

[0011] As a further limitation of the first aspect of the present invention, a U-shaped sealing strip is connected to the electric door frame, and a foam sealing strip is provided on the inclined structure. The U-shaped sealing strip and the foam sealing strip are extruded with the inclined surface of the inclined structure to cause the U-shaped sealing strip and the foam sealing strip to be extruded and deformed to achieve sealing.

[0012] As a further limitation of the first aspect of the present invention, the electric door also includes: a connecting rod fixed on the electric door frame and two longitudinal support rods parallel to each other, the two longitudinal support rods are respectively connected to the connecting rod, and the left transverse support rod and the right transverse support rod are respectively connected to the corresponding longitudinal support rod.

[0013] As a further limitation of the first aspect of the present invention, a guide port is connected to the outer side of the oil extraction joint, the oil extraction joint is connected to the flexible connector through a connecting shaft, the front door frame is fixed with a fixing column through a sealing ring, the sealing ring is fixed through a sealing ring mounting seat, and the sealing ring mounting seat is connected to the front door frame; A status indicator light is connected to the front door frame, an upper oil receiving pan is arranged at the bottom front side of the front door frame, and an upper waste oil drain pipe is connected to the upper oil receiving pan.

[0014] As a further limitation of the first aspect of the present invention, the oil extraction tank body is fixed on the height adjustment seat, and the oil extraction tank body also includes: an oil extraction tank frame, a grounding bar connection end, a fan and a fan cover, an ultrasonic sensor bracket, a manual oil extraction port mounting seat, a lower oil receiving pan, an oil pipe assembly mounting plate, an oil pipe assembly mounting bracket, an electrical mounting plate, an internal wiring terminal block and a temperature and humidity sensor bracket, the lower oil receiving pan is used to collect oil leakage from the front and rear ends of the oil extraction joint, and the lower oil receiving pan is connected to a lower waste oil drain pipe.

[0015] As a further limitation of the first aspect of the present invention, the oil tank body further includes an oil tank electrical component, and the oil tank electrical component includes: a switching power supply, an air switch, a control box, a communication module, a temperature and humidity sensor, an ultrasonic sensor, a wiring terminal, a wire trough, a buzzer and an antenna; The switching power supply, circuit breaker, control box, communication module, wiring terminal and wire trough are installed on the electrical installation board, the buzzer is installed on the left side inside the fuel tank frame, the antenna is installed on the upper inner side of the fuel tank frame, the ultrasonic sensor is installed on the ultrasonic sensor bracket, and the temperature and humidity sensor is installed on the temperature and humidity sensor bracket.

[0016] As a further limitation of the first aspect of the present invention, the oil tank body also includes an oil tank oil circuit assembly, and the oil tank oil circuit assembly includes: a circulating pump oil inlet pipeline, a circulating pump, a circulating pump oil outlet pipeline, a manual oil extraction port, an artificial oil extraction port oil inlet pipeline, a manual inspection valve, a pipe clamp, a solenoid valve, a main oil inlet pipeline, and an oil extraction pipeline; The circulating pump oil inlet pipeline, circulating pump, and circulating pump oil outlet pipeline are installed on the right side of the oil tank frame. The manual oil inlet is installed on the manual oil inlet mounting seat. The manual inspection valve, pipe clamp, solenoid valve, and main oil inlet pipeline are installed on the oil pipe assembly mounting bracket. The transformer oil outlet pipe is fixed to the right side of the oil tank frame by a pipe clamp, the transformer oil outlet pipe is connected to the first port of the four-way joint, the second port of the four-way joint is connected to the main oil inlet pipeline through the solenoid valve, and the main oil inlet pipeline is fixed to the right side of the oil tank frame by a pipe clamp and connected to the oil taking joint; The third port of the four-way joint is connected to the inlet of the circulation pump through a pipeline, and the outlet of the circulation pump circulates the oil sample back to the transformer through the pipeline. The fourth port of the four-way joint is connected to the artificial oil extraction port through the artificial oil extraction port oil inlet pipeline.

[0017] In a second aspect, the present invention provides a transformer oil sample extraction robot, comprising a robot body and the transformer oil sample extraction device described in the first aspect of the present invention, wherein the robot body is equipped with an oil extraction port for cooperating with an oil extraction connector to extract oil.

[0018] In a third aspect, the present invention provides an operating method of a transformer oil sample extraction device, using the transformer oil sample extraction device described in the first aspect of the present invention, comprising the following process: After receiving the oil extraction door opening command, the output end of the motor drives the lead screw to move through the coupling, thereby driving the electric door to rise to leak out the oil extraction joint. After the oil extraction joint is connected to the external oil extraction port, the corresponding solenoid valve is opened to collect oil samples; After the oil sample is collected, the solenoid valve is closed, and the output end of the motor drives the lead screw to move through the coupling, thereby driving the electric door to descend to cover the oil extraction joint.

[0019] Compared with the prior art, the present invention has the following beneficial effects: The present invention innovatively develops a transformer oil sample extraction device, which provides a unified standard oil sample collection docking interface for the oil sample collection robot, without considering the installation position and form of the transformer oil extraction valve port, and solves the problem of poor operational adaptability and difficult to ensure oil sample collection quality caused by the various forms and positions of the transformer oil extraction valve port. There is a certain safety distance between the device and the transformer, and the device can be arranged in a place that is easy for the robot to pass through and reach. Auxiliary functional components can be added according to the operating characteristics of the oil sample collection robot, thereby achieving the purpose of reducing the difficulty of oil extraction port docking and improving the docking success rate, reducing the workload of oil sample collection, improving the efficiency of oil sample collection, and reducing the loss of transformer oil during the sampling process.

[0020] The present invention adopts a triple sealing method of "folding seal + bevel seal + flexible seal", which not only has a high level of waterproof and dustproof when the electric door is closed, but also can meet the internal waterproof requirements of the oil tank during emergency operations in rainy days; the present invention has oil level detection and temperature and humidity detection functions, and can perform real-time detection of oil circuit leakage faults and abnormal working environment of internal electrical components; the present invention has two oil leakage recovery devices, an upper oil receiving pan and a lower oil receiving pan, to ensure that when abnormal oil leakage occurs at the front and rear ends of the oil extraction joint, the oil can be directionally recovered and processed; the present invention can adopt two installation and fixing structures, wall-mounted and vertical. When used alone, the oil tank can be wall-mounted, and the "oil tank + height adjustment seat" can be installed vertically. The modular design makes the lead-out device more adaptable to the environment of the substation site.

[0021] 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

[0022] 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.

[0023] Figure 1 An overall schematic diagram of a transformer oil sample extraction device provided in Example 1 of the present invention; Figure 2 A schematic diagram of a fuel tank front door assembly provided in Embodiment 1 of the present invention; Figure 3 A schematic diagram of the connection of the oil extraction joint provided in Example 1 of the present invention; Figure 4 The structure of the oil tank provided in Example 1 of the present invention is shown in FIG. Figure 1 ; Figure 5 The structure of the oil tank provided in Example 1 of the present invention is shown in FIG. Figure 2 ; Figure 6 A schematic diagram of an electrical assembly of a fuel tank provided in Example 1 of the present invention; Figure 7 Schematic diagram of the oil tank oil circuit assembly provided in Example 1 of the present invention Figure 1 ; Figure 8 Schematic diagram of the oil tank oil circuit assembly provided in Example 1 of the present invention Figure 2 ; Fig. 9 A schematic diagram of a height adjustment base provided in Example 1 of the present invention; Fig.10 Schematic diagram of an electric door provided in Example 1 of the present invention Figure 1 ; Fig.11 Schematic diagram of an electric door provided in Example 1 of the present invention Figure 2 ; Among them, 1. Take the fuel tank; 11-1, front door frame; 11-2, waterproof brush; 11-3, unlocking ring; 11-4, front support seat; 11-5, trapezoidal screw; 11-6, status indicator light; 11-7, main rail; 11-8, photoelectric sensor; 11-9, sensor mounting plate; 11-10, rear support seat; 11-11, coupling; 11-12, motor mounting seat; 11-13, DC motor; 11-14, fixing column; 11-15, auxiliary guide rail; 11-16, sealing ring; 11-17, oil extraction joint; 11-18, guide port; 11-19, flexible connector; 11-20, connecting shaft; 11-21, upper oil receiving pan; 11-22, sealing ring mounting seat; 12-1, oil tank frame; 12-2, grounding bar connection end; 12-3, fan and fan cover; 12-4, ultrasonic sensor bracket; 12-5, manual oil port mounting seat; 12-6, lower oil receiving tray; 12-7, oil pipe assembly mounting plate; 12-8, oil pipe assembly mounting bracket; 12-9, electrical installation board; 12-10, internal wiring terminal block; 12-11, temperature and humidity sensor bracket; 13-1, switch power supply; 13-2, circuit breaker; 13-3, control box; 13-4, communication module; 13-5, temperature and humidity sensor; 13-6, ultrasonic sensor; 13-7, terminal block; 13-8, wire slot; 13-9, buzzer; 13-10, antenna; 14-1, circulating pump oil inlet pipeline; 14-2, circulating pump; 14-3, circulating pump oil outlet pipeline; 14-4, manual oil extraction port; 14-5, manual oil extraction port oil inlet pipeline; 14-6, manual inspection valve; 14-7, pipe clamp; 14-8, solenoid valve; 14-9, main oil inlet pipeline; 14-10, oil extraction pipeline; 14-11, lower waste oil drain pipe; 14-12, upper waste oil drain pipe; 2. Height adjustment seat; 21. Adjustment seat frame; 22. Side sealing plate; 3. Electric door; 301. Electric door frame; 301-1. Foaming sealing strip; 302. U-shaped sealing strip; 303. Connecting rod; 304. Left longitudinal support rod; 305. Left transverse support rod; 306. Left slider; 307. Left slider seat; 308. Travel switch trigger piece; 309. Trapezoidal nut; 310. Right transverse support rod; 311. Right slider; 312. Right slider seat; 313. Right longitudinal support rod; 4. Characteristic identifiers. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] 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.

[0026] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0027] Embodiment 1: In this implementation, if Figure 1 As shown in FIG. 1 , a transformer oil sample extraction device is proposed, which mainly comprises: an oil extraction tank 1, a height adjustment seat 2, an electric door 3 and a characteristic marker 4. The oil extraction tank 1 is the core part of the transformer oil sample extraction device. The height adjustment seat 2 can adapt to different foundation heights (including an adjustment seat frame 21 and a side sealing plate 22, mainly adjusting the height of the oil extraction tank, and enabling cables and external pipelines to enter and exit from the inside, such as Fig. 9 As shown), to ensure the height of the oil tank 1 from the ground, when the electric door 3 is opened, the internal oil connection is exposed for oil connection, and when the electric door is closed, it also has the functions of waterproof and dustproof. The characteristic marker 4 is mainly used to guide the robot to complete the oil connection.

[0028] More specifically, the oil tank body includes an oil tank front door assembly, and the oil tank body mainly serves as a support for the installation of internal electrical components, oil circuit components and manual oil inlet. Figure 2 and Figure 3 As shown, the oil tank front door assembly includes a front door frame 11-1, a support seat (including a front support seat 11-4 and a rear support seat 11-10), a trapezoidal screw 11-5, a guide rail, a coupling 11-11 and a DC motor 11-13, and the DC motor 11-13 is fixed to the front door frame 11-1 through a DC motor mounting seat 11-12.

[0029] The trapezoidal lead screw 11-5 is passed through the support seat (including the front support seat 11-4 and the rear support seat 11-10), the output end of the DC motor 11-13 is connected to one end of the lead screw through the coupling 11-11, and the other end of the trapezoidal lead screw 11-5 is detachably connected to the unlocking ring 11-3; The sliders of the electric door 3 (including the left slider 306 and the right slider 311) are slidably connected to the guide rails (including the main guide rail 11-7 and the auxiliary guide rail 11-15), and the trapezoidal lead screw 11-5 passes through the trapezoidal nut 309 on the left slider seat 307. The left slider seat 307 can open the electric door driven by the trapezoidal lead screw 11-5 to leak out the oil extraction connector 11-17.

[0030] In this implementation, preferably, the support seat includes a front support seat 11-4 and a rear support seat 11-10, the trapezoidal lead screw 11-5 is passed through the front support seat 11-4 and the rear support seat 11-10, the guide rail includes a main guide rail 11-7 and an auxiliary guide rail 11-15 which are parallel to each other, the slider includes a left slider 306 and a right slider 311, the slider seat includes a left slider seat 307 and a right slider seat 312, the left slider seat 307 is connected with a trapezoidal nut 309, the left slider 306 is connected to the left slider seat 307, and the right slider 311 is connected to the right slider seat 312; The left slider seat 307 is slidably connected to the main guide rail 11-7, and the right slider seat 312 is slidably connected to the auxiliary guide rail 11-15. A sensor mounting plate 11-9 is connected to the front door frame 11-1 on the side of the main guide rail 11-7, and a photoelectric sensor 11-8 is connected to the sensor mounting plate 11-9. The fixed column 11-14 can cooperate with the oil extraction robot to complete spatial positioning. The inner circle of the sealing ring 11-16 is tightly attached to the outer cylindrical surface of the fixed column 11-14, the front side is tightly attached to the inner side surface of the front door frame 11-1, and the rear side is tightly attached to the sealing ring mounting seat 11-22, so that an effective seal can be formed for the fixed column 11-14.

[0031] In the present implementation, preferably, the space of the front door frame 11-1 accommodates the oil extraction joint, and the front door frame 11-1 includes an inward protrusion and an outward protrusion respectively, the inward protrusion is a box structure, which is used to connect the oil extraction port and the oil tank oil circuit assembly through the opened through hole, and the outward protrusion is an inclined structure that cooperates with the electric door, which can convert the linear motion into the extrusion action of the sealing strip.

[0032] In this implementation, preferably, the electric door 3 is in a closed state when not in operation, which can effectively prevent water and dust. It is only opened electrically when the robot is taking oil. Fig.10 and Fig.11As shown, the electric door 3 also includes: an electric door frame 301, a left transverse support rod 305, a right transverse support rod 310, and a travel switch trigger plate 308. The travel switch trigger plate 308 and the trapezoidal nut 309 are both connected to the left slider seat 307. One side of the bottom of the electric door frame 301 is connected to the left slider seat 307 through the left transverse support rod 305, and the other side of the bottom of the electric door frame 301 is connected to the right slider seat 312 through the right transverse support rod 310. The left transverse support rod 305 passes through the vertical opening on one side of the box structure, and the right transverse support rod 310 passes through the vertical opening on the other side of the box structure. The vertical openings are both provided with waterproof brushes 11-2, which can effectively prevent rainwater from entering the oil tank during operations on rainy days.

[0033] In this implementation, preferably, a U-shaped sealing strip 302 is connected to the electric door frame 301, and a foam sealing strip is provided on the inclined structure. The U-shaped sealing strip 302 and the foam sealing strip are extruded with the inclined surface of the inclined structure to cause the U-shaped sealing strip 302 and the foam sealing strip 301-1 to be extruded and deformed to achieve sealing.

[0034] In the present implementation, preferably, the electric door 3 also includes: a connecting rod 303 fixed on the electric door frame 301 and two longitudinal support rods parallel to each other (respectively a left longitudinal support rod 304 and a right longitudinal support rod 313), the two longitudinal support rods are respectively connected to the connecting rod 303, the left transverse support rod 305 is connected to the left longitudinal support rod 304, and the right transverse support rod 310 is connected to the right longitudinal support rod 313.

[0035] In this implementation, preferably, the oil extraction connector 11-17, the guide port 11-18, the flexible connector 11-19 and the connecting shaft 11-20 together constitute the oil extraction port, the outer side of the oil extraction connector 11-17 is connected with the guide port 11-18, the oil extraction connector 11-17 is connected to the flexible connector 11-19 through the connecting shaft, and the guide port and the flexible connector can enable the robot to successfully dock the oil extraction connector within a certain angle range.

[0036] In this implementation, preferably, the front door frame 11-1 is fixed with a fixing column through a sealing ring 11-16, and the sealing ring 11-16 is fixed through a sealing ring mounting seat 11-22, and the sealing ring mounting seat 11-22 is connected to the front door frame 11-1.

[0037] The front door frame 11-1 is connected with a status indicator light 11-6, which can indicate the normal state and fault state of the oil tank through light. An upper oil receiving pan 11-21 is arranged at the bottom front side of the front door frame 11-1, and the upper oil receiving pan 11-21 is connected with an upper waste oil drain pipe 14-12. The upper oil receiving pan 11-21 is installed at the bottom of the front side cavity of the front door frame 11-1, and can collect the insulating oil leaked from the oil taking joint.

[0038] In this implementation, the front support seat 11-4, the trapezoidal screw 11-5, the main rail 11-7, the photoelectric sensor 11-8, the rear support seat 11-10, the coupling 11-11, the motor mounting seat 11-12, the DC motor 11-13 and the auxiliary guide rail 11-15 together constitute a linear motion mechanism, which is installed on the inner side of the front door frame 11-1, which can ensure the movement stability and accuracy of the electric door 3.

[0039] In this implementation, preferably, the oil tank is fixed on the height adjustment seat 2. Figure 4 and Figure 5 As shown, the oil extraction tank body also includes: an oil extraction tank frame 12-1, a grounding bar connection end 12-2, a fan and a fan cover 12-3, an ultrasonic sensor bracket 12-4, an artificial oil extraction port mounting seat 12-5, a lower oil receiving pan 12-6, an oil pipe assembly mounting plate 12-7, an oil pipe assembly mounting bracket 12-8, an electrical mounting plate 12-9, an internal wiring terminal row 12-10 and a temperature and humidity sensor bracket 12-11, the lower oil receiving pan 12-6 is used to collect the leaked oil at the front and rear ends of the oil extraction connector 11-17, and the lower oil receiving pan 12-6 is connected to the lower waste oil drain pipe 14-11.

[0040] In this implementation, the oil tank body preferably also includes an oil tank electrical component, such as Figure 6 As shown, the electrical components of the fuel tank include: a switching power supply 13-1, an air switch 13-2, a control box 13-3, a communication module 13-4, a temperature and humidity sensor 13-5, an ultrasonic sensor 13-6, a terminal block 13-7, a wire slot 13-8, a buzzer 13-9 and an antenna 13-10; The switching power supply 13-1, the circuit breaker 13-2, the control box 13-3, the communication module 13-4, the terminal block 13-7 and the wire trough 13-8 are installed on the electrical installation board 12-9, the buzzer 13-9 is installed on the left side inside the oil tank frame 12-1, the antenna 13-10 is installed on the upper inner side of the oil tank frame 12-1, the ultrasonic sensor 13-6 is installed on the ultrasonic sensor bracket 12-4, and the temperature and humidity sensor 13-5 is installed on the temperature and humidity sensor bracket 12-11.

[0041] In this implementation, the oil tank body preferably also includes an oil tank oil circuit assembly, such as Figure 7 and Figure 8 As shown, the oil tank oil circuit assembly includes: a circulating pump oil inlet pipeline 14-1, a circulating pump 14-2, a circulating pump oil outlet pipeline 14-3, a manual oil extraction port 14-4, a manual oil extraction port oil inlet pipeline 14-5, a manual inspection valve 14-6, a pipe clamp 14-7, a solenoid valve 14-8, a main oil inlet pipeline 14-9, and an oil extraction pipeline 14-10; The circulating pump oil inlet pipeline 14-1, the circulating pump 14-2, and the circulating pump oil outlet pipeline 14-3 are installed on the right side of the inner side of the oil tank frame 12-1, the manual oil inlet 14-4 is installed on the manual oil inlet mounting seat 12-5, and the manual inspection valve 14-6, the pipe clamp 14-7, the solenoid valve 14-8, and the main oil inlet pipeline 14-9 are installed on the oil pipe assembly mounting bracket 12-8; The transformer oil outlet pipe is fixed to the right side of the oil tank frame 12-1 by a pipe clamp 14-7, the transformer oil outlet pipe is connected to the first port of the four-way joint, the second port of the four-way joint is connected to the main oil inlet pipeline 14-9 through the solenoid valve 14-8, and the main oil inlet pipeline 14-9 is fixed to the right side of the oil tank frame 12-1 by a pipe clamp 14-7 and connected to the oil taking joint 11-17; The third port of the four-way joint is connected to the inlet of the circulation pump 14-2 through a pipeline, and the outlet of the circulation pump 14-2 circulates the oil sample back to the transformer through a pipeline. The fourth port of the four-way joint is connected to the artificial oil extraction port 14-4 through the artificial oil extraction port oil inlet pipeline 14-5.

[0042] The oil tank oil circuit assembly is mainly connected to the external oil pipe, and at the same time controls the oil circuit connection and disconnection of the internal manual oil intake port and the robot oil intake port, as well as the pre-circulation of the oil circuit.

[0043] After receiving the oil extraction door opening command, the output end of the motor drives the lead screw to move through the coupling, thereby driving the electric door to rise to leak out the oil extraction joint. After the oil extraction joint is connected to the external oil extraction port, the corresponding solenoid valve is opened to collect oil samples; After the oil sample is collected, the solenoid valve is closed, and the output end of the motor drives the lead screw to move through the coupling, thereby driving the electric door to descend to cover the oil extraction joint.

[0044] The present invention can provide a unified standard oil sample collection docking interface for the oil sample collection robot, without considering the installation position and form of the transformer oil extraction valve port. There is a certain safety distance between the lead-out device and the transformer, and it can be arranged in a place that is easy for the robot to pass through.

[0045] Embodiment 2: The present implementation provides a transformer oil sample extraction robot, comprising a robot body and the transformer oil sample extraction device described in Embodiment 1 of the present invention, wherein the robot body is equipped with an oil extraction port for cooperating with an oil extraction joint to extract oil.

[0046] 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. A transformer oil sample extraction device, characterized in that: include: The oil tank body and the electric door, the oil tank body includes an oil tank front door assembly, and the oil tank front door assembly includes a front door frame, a support seat, a lead screw, a guide rail, a coupling and a motor; The lead screw is passed through the support seat, the output end of the motor is connected to one end of the lead screw through a coupling, and the other end of the lead screw is detachably connected to an unlocking ring; The slider of the electric door is slidably connected to the guide rail, the slider is connected to the slider seat, the lead screw passes through the nut on the slider seat, and the slider seat can open the electric door to leak out the oil extraction joint under the drive of the lead screw.

2. The transformer oil sample extraction device according to claim 1, characterized in that: The support seat includes a front support seat and a rear support seat, the lead screw is passed through the front support seat and the rear support seat, the guide rail includes a main guide rail and an auxiliary guide rail parallel to each other, the slider includes a left slider and a right slider, the slider seat includes a left slider seat and a right slider seat, a nut is connected to the left slider seat, the left slider is connected to the left slider seat, and the right slider is connected to the right slider seat; The left slider seat is slidably connected to the main guide rail, the right slider seat is slidably connected to the auxiliary guide rail, a sensor mounting plate is connected to the front door frame on the side of the main guide rail, and a photoelectric sensor is connected to the sensor mounting plate.

3. The transformer oil sample extraction device according to claim 2, characterized in that: The space of the front door frame accommodates the oil extraction joint, and the front door frame includes an inward protrusion and an outward protrusion. The inward protrusion is a box structure for connecting the oil extraction port and the oil tank oil circuit assembly through the opened through hole, and the outward protrusion is an inclined structure that cooperates with the electric door.

4. The transformer oil sample extraction device according to claim 3, characterized in that: The electric door further comprises: an electric door frame, a left transverse support rod, a right transverse support rod, and a travel switch triggering piece, wherein the travel switch triggering piece and the nut are both connected to the left slider seat, one side of the bottom of the electric door frame is connected to the left slider seat through the left transverse support rod, and the other side of the bottom of the electric door frame is connected to the right slider seat through the right transverse support rod; The left transverse support rod passes through a vertical opening on one side of the box structure, and the right transverse support rod passes through a vertical opening on the other side of the box structure. Waterproof brushes are provided on the vertical openings.

5. The transformer oil sample extraction device according to claim 4, characterized in that: A U-shaped sealing strip is connected to the electric door frame, and a foam sealing strip is provided on the inclined structure. The U-shaped sealing strip and the foam sealing strip are squeezed and deformed by the inclined surface of the inclined structure to achieve sealing.

6. The transformer oil sample extraction device according to claim 3, characterized in that: The electric door also includes: a connecting rod fixed on the electric door frame and two longitudinal support rods parallel to each other, the two longitudinal support rods are respectively connected to the connecting rod, and the left transverse support rod and the right transverse support rod are respectively connected to the corresponding longitudinal support rods.

7. The transformer oil sample extraction device according to any one of claims 1 to 6, characterized in that: The outer side of the oil extraction joint is connected with a guide port, the oil extraction joint is connected with a flexible connector through a connecting shaft, the front door frame is fixed with a fixing column through a sealing ring, the sealing ring is fixed through a sealing ring mounting seat, and the sealing ring mounting seat is connected with the front door frame; A status indicator light is connected to the front door frame, an upper oil receiving pan is arranged at the bottom front side of the front door frame, and an upper waste oil drain pipe is connected to the upper oil receiving pan.

8. The transformer oil sample extraction device according to any one of claims 1 to 6, characterized in that: The oil extraction tank body is fixed on the height adjustment seat, and the oil extraction tank body also includes: an oil extraction tank frame, a grounding bar connection end, a fan and a fan cover, an ultrasonic sensor bracket, an artificial oil extraction port mounting seat, a lower oil receiving pan, an oil pipe assembly mounting plate, an oil pipe assembly mounting bracket, an electrical mounting plate, an internal wiring terminal row and a temperature and humidity sensor bracket. The lower oil receiving pan is used to collect oil leakage from the front and rear ends of the oil extraction joint, and the lower oil receiving pan is connected to a lower waste oil drain pipe.

9. The transformer oil sample extraction device according to claim 8, characterized in that: The oil extraction tank body also includes an oil extraction tank electrical component, which includes: a switching power supply, an air switch, a control box, a communication module, a temperature and humidity sensor, an ultrasonic sensor, a wiring terminal, a wire trough, a buzzer and an antenna; The switching power supply, circuit breaker, control box, communication module, wiring terminal and wire trough are installed on the electrical installation board, the buzzer is installed on the left side inside the fuel tank frame, the antenna is installed on the upper inner side of the fuel tank frame, the ultrasonic sensor is installed on the ultrasonic sensor bracket, and the temperature and humidity sensor is installed on the temperature and humidity sensor bracket.

10. The transformer oil sample extraction device according to claim 8, characterized in that: The oil extraction tank body also includes an oil extraction tank oil circuit assembly, which includes: a circulating pump oil inlet pipeline, a circulating pump, a circulating pump oil outlet pipeline, a manual oil extraction port, an oil inlet pipeline of the manual oil extraction port, a manual inspection valve, a pipe clamp, a solenoid valve, a main oil inlet pipeline, and an oil extraction pipeline; The circulating pump oil inlet pipeline, circulating pump, and circulating pump oil outlet pipeline are installed on the right side of the oil tank frame. The manual oil inlet is installed on the manual oil inlet mounting seat. The manual inspection valve, pipe clamp, solenoid valve, and main oil inlet pipeline are installed on the oil pipe assembly mounting bracket. The transformer oil outlet pipe is fixed to the right side of the oil tank frame by a pipe clamp, the transformer oil outlet pipe is connected to the first port of the four-way joint, the second port of the four-way joint is connected to the main oil inlet pipeline through the solenoid valve, and the main oil inlet pipeline is fixed to the right side of the oil tank frame by a pipe clamp and connected to the oil taking joint; The third port of the four-way joint is connected to the inlet of the circulation pump through a pipeline, and the outlet of the circulation pump circulates the oil sample back to the transformer through the pipeline. The fourth port of the four-way joint is connected to the artificial oil extraction port through the artificial oil extraction port oil inlet pipeline.

11. A transformer oil sample extraction robot, characterized in that: The invention comprises a robot body and the transformer oil sample extraction device according to any one of claims 1 to 10, wherein the robot body is provided with an oil extraction port for cooperating with an oil extraction joint to extract oil.

12. A method for operating a transformer oil sample extraction device, characterized in that: Using the transformer oil sample extraction device according to any one of claims 1 to 10, The process includes: After receiving the oil extraction door opening command, the output end of the motor drives the lead screw to move through the coupling, thereby driving the electric door to rise to leak out the oil extraction joint. After the oil extraction joint is connected to the external oil extraction port, the corresponding solenoid valve is opened to collect oil samples; After the oil sample is collected, the solenoid valve is closed, and the output end of the motor drives the lead screw to move through the coupling, thereby driving the electric door to descend to cover the oil extraction joint.

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