On-line monitoring oil sampling device for gas in transformer oil based on all-weather automatic state

Abstract

An on-line monitoring oil sampling device for gas in transformer oil based on an all-weather automatic state comprises an oil sampling device body with an upper pipe (6), an injector (2) arranged on the upper pipe (6) and an electric telescopic cylinder (3) arranged on the injector (2). A sampling transformer oil liquid flowing channel is formed between a transformer oil cabinet and on-line monitoring of gas in transformer oil, and power sampling transformer oil liquid conveying is carried out on the oil liquid sampling device body through the injector (2) and the electric telescopic cylinder (3). The sampling transformer oil is controlled to be conveyed under the action of interference factors in any environment, and the technical problem that when the transformer breaks down, an oil sample with a certain volume needs to be manually extracted from the transformer on site to detect gas dissolved in the oil is solved. Therefore, on-line monitoring of gas in transformer oil and automatic oil sampling in an all-weather state are realized.

Description

Technical Field

[0001] This utility model relates to an online monitoring and oil sampling device for gas in transformer oil, and more particularly to an online monitoring and oil sampling device for gas in transformer oil based on an all-weather automatic operation. Background Technology

[0002] When a transformer malfunctions, dissolved gas detection in the transformer oil is necessary. Monitoring the levels of dissolved gases such as hydrogen, carbon monoxide, methane, ethylene, ethane, acetylene, and carbon dioxide in the oil helps diagnose and analyze the transformer's operating status. Therefore, an online oil sampling device for monitoring dissolved gases in transformer oil is an important transformer accessory. Currently, there is no fully automated, 24 / 7 online oil sampling device for monitoring dissolved gases in transformer oil. Especially when a transformer malfunctions, manual sampling of a certain volume of oil is commonly performed on-site. However, this manual sampling directly from the transformer body poses certain safety hazards. Extending the oil pipe from the transformer to a distant location for sampling leads to unnecessary oil consumption. Therefore, achieving automated online oil sampling for monitoring dissolved gases in transformer oil under all weather conditions is not possible.

[0003] This invention utilizes the technical feature of controlling the transport of transformer oil samples under various environmental interference factors. It effectively explores and studies the technical problem of manually extracting a certain volume of oil from the transformer for dissolved gas detection when a transformer malfunctions.

[0004] The statements herein provide only background information related to this utility model and do not necessarily constitute prior art. Based on the technical disclosure provided by the applicant on January 20, 2025, which addresses practical technical problems encountered during the work process, and the existing technical problems, technical features, and technical effects in similar patent documents and background information obtained through retrieval, the technical solution of this invention is proposed. Summary of the Invention

[0005] The subject of this utility model is an online monitoring and oil sampling device for gas in transformer oil based on all-weather automatic operation.

[0006] In order to overcome the above-mentioned technical shortcomings, the purpose of this utility model is to provide a transformer oil sampling device for online monitoring of gas in transformer oil in all-weather automatic mode, thus realizing automatic oil sampling for online monitoring of gas in transformer oil in all-weather mode.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes an oil sampling device body with an upper tube, a syringe mounted on the upper tube, and an electric telescopic cylinder mounted on the syringe.

[0008] By designing an oil sampling device body, syringe, and electric telescopic cylinder, a sampling transformer oil flow channel is formed between the transformer oil tank and the online monitoring of gas in the transformer oil through the oil sampling device body. The syringe and electric telescopic cylinder enable powered sampling and transportation of transformer oil through the oil sampling device body. This allows for controlled transportation of the sampled transformer oil under any environmental interference factors, solving the technical problem of manually extracting a certain volume of oil sample from the transformer for dissolved gas detection when a transformer fails. Therefore, it enables automatic oil sampling for online monitoring of gas in transformer oil under all-weather conditions.

[0009] This utility model designs a method for controlling the transportation of oil sampling device body, syringe and electric telescopic cylinder in any environment under the influence of interference factors.

[0010] This utility model is designed to connect the syringe and electric telescopic cylinder to the body of the oil sampling device in a way that allows for the powered sampling of transformer oil.

[0011] This utility model is designed such that the main body of the oil sampling device also includes a transition tank, a lower pipe, a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, and a hydraulic pump.

[0012] The technical advantages of the above four technical solutions are: highlighting the technical characteristics of controlling and transporting transformer oil under the influence of interference factors in any environment, and introducing its application in the technical field of online monitoring of gas in transformer oil based on all-weather automatic status.

[0013] This utility model is designed to include a first accessory device, which is disposed between the syringe and the electric telescopic cylinder, and the first accessory device is configured as a base housing.

[0014] This utility model is designed to include a second accessory device, which is disposed between the first accessory device and the electric telescopic cylinder. The second accessory device is configured as a photoelectric limit switch.

[0015] The technical effect of the above two technical solutions is that they enable the integrated installation of other components and expand the technical effect of this utility model.

[0016] This utility model is designed with a syringe installed on the base housing, an electric telescopic cylinder installed between the syringe and the base housing, and a photoelectric limit switch installed between the electric telescopic cylinder and the base housing. An upper pipe is installed between the transformer oil tank, the syringe and the transition tank, and a lower pipe is installed between the transition tank and the online gas monitoring of the transformer oil. A first valve, a second valve, a third valve and a fourth valve are respectively installed on the upper pipe, and a fifth valve, a sixth valve and a hydraulic pump are respectively installed on the lower pipe.

[0017] The technical effect of the above technical solution is that the basic technical solution of this utility model is composed of the housing, syringe, electric telescopic cylinder, photoelectric limit switch, transition tank, upper tube, lower tube, first valve, second valve, third valve, fourth valve, fifth valve, sixth valve and hydraulic pump, which solves the technical problem of this utility model.

[0018] This utility model is designed such that the lower part of the periphery of the syringe barrel is connected to the housing, the piston handle end face of the syringe is connected to the electric telescopic cylinder, and the needle of the syringe is connected to the upper tube through the syringe.

[0019] The technical effect of the above solution is that it enables the external stroke extraction function.

[0020] This utility model is designed such that the electric telescopic cylinder is configured as a servo electric cylinder and the housing of the electric telescopic cylinder is configured to be connected to the base housing, and the telescopic end of the electric telescopic cylinder is configured to be connected to the syringe and the photoelectric limit switch respectively.

[0021] The technical effect of the above solution is that it enables the controlled telescopic cylinder to perform a powered pushing motion.

[0022] This utility model designs a transition tank comprising a tank section, valve section I, valve section II, level switch I, and level switch II. The upper end face of the tank section is respectively connected to valve section I, the upper pipe, and the lower pipe. The lower end face of the tank section is connected to valve section II. The upper part of the right side face of the tank section is connected to level switch I, and the lower part of the right side face of the tank section is connected to level switch II.

[0023] This utility model is designed with a vertical tank-shaped body, and valve part I and valve part II are respectively electric valves, and level switch I and level switch II are respectively level sensors.

[0024] This utility model designs an upper tube that is a cross-shaped cylindrical body with a rubber plug at one of its horizontal ports. The rubber plug at one of the horizontal ports of the upper tube is connected to a syringe. The upper vertical port of the upper tube is connected to a transformer oil tank and the upper vertical cross-section port of the upper tube is connected to a first valve. The lower vertical port of the upper tube is connected to a transition tank and the lower vertical cross-section port of the upper tube is connected to a fourth valve. The inner cross-section port of one of the horizontal ports of the upper tube is connected to a second valve, and the outer cross-section port of one of the horizontal ports of the upper tube is connected to a third valve.

[0025] This utility model is designed such that the first valve, the second valve, the third valve, and the fourth valve are all electric valves, and one port of the first valve is connected to the transformer oil tank, one port of the fourth valve is connected to the transition tank, and another port of the first valve is connected to one port of the second valve, and one port of the third valve is connected to the syringe. The other ports of the second valve, the third valve, and the fourth valve are arranged to be interconnected.

[0026] This utility model designs a lower tube that is a T-shaped cylindrical body with its vertical end connected to the transition tank in an immersion manner. The vertical section of the lower tube is connected to the fifth valve, and one of its horizontal sections is connected to the transformer oil tank. One of its horizontal sections is connected to a hydraulic pump, and another horizontal section is connected to an online gas monitoring system in the transformer oil. The remaining horizontal section is connected to the sixth valve.

[0027] This utility model is designed such that the fifth valve and the sixth valve are respectively electric valves and the hydraulic pump is a plunger pump. One port of the fifth valve is connected to the transition tank and the output port of the hydraulic pump is connected to the transformer oil tank. One port of the sixth valve is connected to the online gas monitoring of the transformer oil. The other port of the fifth valve, the input port of the hydraulic pump, and the other port of the sixth valve are mutually connected.

[0028] The technical effects of the above six technical solutions are as follows: they enable the preliminary purging treatment in the sampling transformer oil transportation pipeline and enable the transportation of the sampling transformer oil in a state of eliminating air bubbles.

[0029] This utility model is designed with a housing comprising a box shell, a seat part I, a seat part II, and a seat part III. The inner side of the bottom wall of the box shell is connected to the seat part I, the middle of the bottom wall of the box shell is connected to the seat part II, and the outer side of the bottom wall of the box shell is connected to the seat part III. The inner wall of the box shell is connected to the upper tube sleeve, and the upper end face of the seat part I is connected to the syringe. The seat part II is connected to the photoelectric limit switch, and the seat part III is connected to the electric telescopic cylinder.

[0030] This utility model is designed with the following components: the shell is a rectangular box-shaped body, and the seat I is a block-shaped body with a C-shaped groove on the upper end face, and the C-shaped groove of the seat I is configured to be connected to the syringe; the seat II is a C-shaped frame-shaped body, and the horizontal part of the C-shaped frame of the seat II is configured to be connected to the photoelectric limit switch; and the seat III is a block-shaped body with a C-shaped groove on the upper end face, and the C-shaped groove of the seat III is configured to be connected to the electric telescopic cylinder.

[0031] The technical effect of the above two solutions is that they achieve the support of the sampling transformer oil to prevent outflow of the sampled transformer oil.

[0032] This utility model designs a photoelectric limit switch in which the housing is connected to the base housing and the light source contact of the photoelectric limit switch is connected to the electric telescopic cylinder.

[0033] The technical effect of the above solution is that it enables stroke control of the electric telescopic cylinder.

[0034] This utility model is designed such that the transition tank, upper tube, lower tube, second valve, third valve, fourth valve, fifth valve, hydraulic pump and housing, syringe, and electric telescopic cylinder are arranged in a manner that allows external pumping of liquid components. Furthermore, the transition tank, upper tube, lower tube, second valve, third valve, fourth valve, fifth valve, hydraulic pump and first valve and sixth valve are arranged in a manner that allows port control. Finally, the transition tank, upper tube, lower tube, second valve, third valve, fourth valve, fifth valve, hydraulic pump, housing, syringe, electric telescopic cylinder, and photoelectric limit switch are arranged in a manner that limits the stroke.

[0035] This utility model is designed such that the center line of the syringe and the center line of the electric telescopic cylinder are set on the same straight line, and two photoelectric limit switches are set between the base and the syringe.

[0036] In this technical solution, the syringe and the electric telescopic cylinder are the basic components and essential technical features of this utility model. The housing, photoelectric limit switch, transition tank, upper tube, lower tube, first valve, second valve, third valve, fourth valve, fifth valve, sixth valve and hydraulic pump are functional components and features that achieve other technical effects of this utility model. The design of the housing, seat I, seat II, seat III, tank, valve I, valve II, level switch I and level switch II are technical features that comply with the Patent Law and its implementing regulations.

[0037] In this technical solution, the controlled transportation of sampled transformer oil under any environmental interference is achieved by a syringe and an electric telescopic cylinder.

[0038] In this technical solution, the main body of the oil sampling device, the syringe, and the electric telescopic cylinder, which control the transportation of transformer oil under the influence of interference factors in any environment, are the key technical features. In the technical field of online monitoring of gas in transformer oil based on all-weather automatic operation, this solution is novel, inventive, and practical. The terminology used in this technical solution can be explained and understood using patent literature in this technical field. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of one of the first embodiments of the present utility model.

[0041] Seat housing-1, syringe-2, electric telescopic cylinder-3, photoelectric limit switch-4, transition tank-5, upper tube-6, lower tube-7, first valve-90, second valve-8, third valve-9, fourth valve-91, fifth valve-92, sixth valve-93, hydraulic pump-94, housing-11, seat I-12, seat II-13, seat III-14, tank-51, valve I-52, valve II-53, level switch I-54, level switch II-55. Detailed Implementation

[0042] According to the examination guidelines, terms such as “having,” “comprising,” and “including” used in this invention should be understood as not dispensing the presence or addition of one or more other elements or combinations thereof.

[0043] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other. In addition, unless otherwise specified, the equipment and materials used in the following embodiments are commercially available. Unless otherwise specified, please make improvements according to conventional methods in the field.

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] Figure 1This is one of the first embodiments of the present utility model. The embodiment is described in detail with reference to the accompanying drawings. It includes a housing 1, a syringe 2, an electric telescopic cylinder 3, a photoelectric limit switch 4, a transition tank 5, an upper tube 6, a lower tube 7, a first valve 90, a second valve 8, a third valve 9, a fourth valve 91, a fifth valve 92, a sixth valve 93, and a hydraulic pump 94. The syringe 2 is mounted on the housing 1. The electric telescopic cylinder 3 is positioned between the syringe 2 and the housing 1. The photoelectric limit switch 4 is also positioned between the electric telescopic cylinder 3 and the housing 1. The upper tube 6 is positioned between the transformer oil tank, the syringe 2, and the transition tank 5. The lower tube 7 is positioned between the transition tank 5 and the online gas monitoring system in the transformer oil. The first valve 90, the second valve 8, the third valve 9, and the fourth valve 91 are respectively mounted on the upper tube 6. The fifth valve 92, the sixth valve 93, and the hydraulic pump 94 are respectively mounted on the lower tube 7.

[0048] The second embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0049] In this embodiment, the housing 1 is configured to include a box shell 11, a seat part I 12, a seat part II 13, and a seat part III 14. The inner side of the bottom wall of the box shell 11 is connected to the seat part I 12, the middle of the bottom wall of the box shell 11 is connected to the seat part II 13, and the outer side of the bottom wall of the box shell 11 is connected to the seat part III 14. The inner wall of the box shell 11 is connected to the upper tube 6 in a fitted manner. The upper end face of the seat part I 12 is connected to the syringe 2. The seat part II 13 is connected to the photoelectric limit switch 4, and the seat part III 14 is connected to the electric telescopic cylinder 3.

[0050] The base 1 forms a support connection point for the syringe 2, the electric telescopic cylinder 3, the photoelectric limit switch 4, and the upper tube 6. The base I 12 connects to the syringe 2, the base III 14 connects to the electric telescopic cylinder 3, the base II 13 connects to the photoelectric limit switch 4, and the housing 11 connects to the upper tube 6. Its technical purpose is to serve as a support carrier for the syringe 2, the electric telescopic cylinder 3, the photoelectric limit switch 4, and the upper tube 6.

[0051] In this embodiment, the housing 11 is configured as a rectangular box, and the seat I 12 is configured as a block with a C-shaped groove on the upper end face, and the C-shaped groove of the seat I 12 is configured to be connected to the syringe 2. The seat II 13 is configured as a C-shaped frame, and the horizontal part of the C-shaped frame of the seat II 13 is configured to be connected to the photoelectric limit switch 4. The seat III 14 is configured as a block with a C-shaped groove on the upper end face, and the C-shaped groove of the seat III 14 is configured to be connected to the electric telescopic cylinder 3.

[0052] Its technical purpose is to accommodate and support the syringe 2, electric telescopic cylinder 3, photoelectric limit switch 4 and upper tube 6.

[0053] In this embodiment, the lower part of the peripheral side of the empty cylinder of the syringe 2 is configured to be connected to the housing 1, and the piston handle end face of the syringe 2 is configured to be connected to the electric telescopic cylinder 3. The needle of the syringe 2 is configured to be connected to the upper tube 6 through the cylinder.

[0054] The syringe 2 forms a support connection point for the housing 1, the electric telescopic cylinder 3, and the upper tube 6. The syringe 2 achieves the connection with the housing 1, the electric telescopic cylinder 3, and the upper tube 6. Its technical purpose is to serve as one of the components for pumping the sampling transformer oil.

[0055] In this embodiment, the electric telescopic cylinder 3 is configured as a servo electric cylinder and the housing of the electric telescopic cylinder 3 is configured to be connected to the base housing 1. The telescopic ends of the electric telescopic cylinder 3 are respectively configured to be connected to the syringe 2 and the photoelectric limit switch 4.

[0056] The electric telescopic cylinder 3 forms a support connection point for the housing 1, the syringe 2 and the photoelectric limit switch 4. The electric telescopic cylinder 3 realizes the connection with the housing 1, the syringe 2 and the photoelectric limit switch 4. Its technical purpose is to be used as the second component for pumping the sampling transformer oil.

[0057] In this embodiment, the housing of the photoelectric limit switch 4 is configured to be connected to the base housing 1, and the light source contact of the photoelectric limit switch 4 is configured to be connected to the electric telescopic cylinder 3.

[0058] The photoelectric limit switch 4 forms a support connection point for the housing 1 and the electric telescopic cylinder 3. The photoelectric limit switch 4 realizes the connection with the housing 1 and the connection with the electric telescopic cylinder 3. Its technical purpose is to be used as the third component for pumping the sampling transformer oil.

[0059] In this embodiment, the transition tank 5 is configured to include a tank section 51, valve section I 52, valve section II 53, level switch I 54, and level switch II 55. The upper end face of the tank section 51 is configured to be connected to valve section I 52, upper pipe 6, and lower pipe 7, respectively. The lower end face of the tank section 51 is configured to be connected to valve section II 53. The upper part of the right side face of the tank section 51 is configured to be connected to level switch I 54, and the lower part of the right side face of the tank section 51 is configured to be connected to level switch II 55.

[0060] The transition tank 5 forms a support connection point for the upper pipe 6 and the lower pipe 7. The tank section 51 connects to the upper pipe 6 and the lower pipe 7. The valve section I 52 empties the tank section 51, and the valve section II 53 drains the tank section 51. The level switches I 54 and II 55 pick up and process the level signal of the sampled transformer oil in the tank section 51. Its technical purpose is to serve as a component for temporary storage of sampled transformer oil.

[0061] In this embodiment, the tank section 51 is configured as a vertical tank-shaped body, and valve section I 52 and valve section II 53 are respectively configured as electric valves, and level switch I 54 and level switch II 55 are respectively configured as level sensors.

[0062] Its technical purpose is to enable the temporary storage of sampled transformer oil in a tank.

[0063] In this embodiment, the upper tube 6 is configured as a cross-shaped cylindrical body with a rubber plug at one of its horizontal ports, and the rubber plug at one of the horizontal ports of the upper tube 6 is configured to be connected to the syringe 2. The upper vertical port of the upper tube 6 is configured to be connected to the transformer oil tank, and the upper vertical cross-section port of the upper tube 6 is configured to be connected to the first valve 90. The lower vertical port of the upper tube 6 is configured to be connected to the transition tank 5, and the lower vertical cross-section port of the upper tube 6 is configured to be connected to the fourth valve 91. The cross-section port located on the inner side of one of the horizontal ports of the upper tube 6 is configured to be connected to the second valve 8, and the cross-section port located on the outer side of one of the horizontal ports of the upper tube 6 is configured to be connected to the third valve 9.

[0064] The upper tube 6 forms a support connection point for the syringe 2, the transition tank 5, the first valve 90, the second valve 8, the third valve 9, and the fourth valve 91. The upper tube 6 realizes the connection with the syringe 2, the transition tank 5, the first valve 90, the second valve 8, the third valve 9, and the fourth valve 91. Its technical purpose is to serve as a component for connecting the transformer oil tank and the transition tank 5.

[0065] In this embodiment, the first valve 90, the second valve 8, the third valve 9, and the fourth valve 91 are all electric valves. One port of the first valve 90 is connected to the transformer oil tank, one port of the fourth valve 91 is connected to the transition tank 5, and another port of the first valve 90 is connected to one port of the second valve 8. One port of the third valve 9 is connected to the syringe 2, and the other ports of the second valve 8, the third valve 9, and the fourth valve 91 are interconnected.

[0066] The first valve 90, the second valve 8, the third valve 9, and the fourth valve 91 form a support connection point for the syringe 2 and the transition tank 5. The third valve 9 connects to the syringe 2, the fourth valve 91 connects to the transition tank 5, the first valve 90 connects to the transformer oil tank, and the second valve 8 connects to the third valve 9 and the fourth valve 91. The technical purpose is to serve as a component for controlling the injection of sampled transformer oil into the transition tank 5.

[0067] In this embodiment, the lower pipe 7 is configured as a T-shaped cylindrical body, and the vertical end of the lower pipe 7 is configured to be submerged and connected to the transition tank 5. The vertical section port of the lower pipe 7 is configured to be connected to the fifth valve 92, and one of the horizontal ports of the lower pipe 7 is configured to be connected to the transformer oil tank. One of the horizontal sections of the lower pipe 7 is configured to be connected to the hydraulic pump 94, and another horizontal port of the lower pipe 7 is configured to be connected to the online gas monitoring of the transformer oil. The other horizontal section port of the lower pipe 7 is configured to be connected to the sixth valve 93.

[0068] The lower pipe 7 forms a support connection point for the transition tank 5, the fifth valve 92, the sixth valve 93, and the hydraulic pump 94. The lower pipe 7 realizes the connection with the transition tank 5, the fifth valve 92, the sixth valve 93, and the hydraulic pump 94. Its technical purpose is to serve as a component for online monitoring of gas in the transformer oil tank and transformer oil and connecting it with the transition tank 5.

[0069] In this embodiment, the fifth valve 92 and the sixth valve 93 are respectively configured as electric valves and the hydraulic pump 94 is configured as a plunger pump. One port of the fifth valve 92 is configured to be connected to the transition tank 5 and the output port of the hydraulic pump 94 is configured to be connected to the transformer oil tank. One port of the sixth valve 93 is configured to be connected to the online monitoring of gas in the transformer oil. The other port of the fifth valve 92, the input port of the hydraulic pump 94, and the other port of the sixth valve 93 are configured to be interconnected.

[0070] The fifth valve 92, the sixth valve 93, and the hydraulic pump 94 form a support connection point for the transition tank 5. The fifth valve 92 enables the connection to the transition tank 5, the hydraulic pump 94 enables the connection to the transformer oil tank, and the sixth valve 93 enables the connection to the online monitoring of gas in the transformer oil. Its technical purpose is to serve as a component for controlling the discharge of sampled transformer oil from the transition tank 5.

[0071] In this embodiment, the transition tank 5, upper tube 6, lower tube 7, second valve 8, third valve 9, fourth valve 91, fifth valve 92, and hydraulic pump 94 are arranged with the housing 1, syringe 2, and electric telescopic cylinder 3 in the manner of externally aspirating liquid components. The transition tank 5, upper tube 6, lower tube 7, second valve 8, third valve 9, fourth valve 91, fifth valve 92, and hydraulic pump 94 are arranged with the first valve 90 and sixth valve 93 in the manner of port control. The transition tank 5, upper tube 6, lower tube 7, second valve 8, third valve 9, fourth valve 91, fifth valve 92, hydraulic pump 94, housing 1, syringe 2, and electric telescopic cylinder 3 are arranged with photoelectric limit switches 4 in the manner of limiting the movement stroke. The center line of syringe 2 and the center line of electric telescopic cylinder 3 are arranged on the same straight line. The two photoelectric limit switches 4 are arranged between housing 1 and syringe 2.

[0072] The usage method of this embodiment is as follows: When the telescopic end of the electric telescopic cylinder 3 moves within the housing of the movable telescopic cylinder 3, it drives the light source contact of the photoelectric limit switch 4 to move between the photoelectric limit switch 4 located on the inner side and the photoelectric limit switch 4 located on the outer side. When the photoelectric limit switch 4 located on the inner side receives a signal, it causes the telescopic end of the electric telescopic cylinder 3 to be at the retracted limit position within the housing of the movable telescopic cylinder 3. When the photoelectric limit switch 4 located on the outer side receives a signal, it causes the telescopic end of the electric telescopic cylinder 3 to be at the extended limit position within the housing of the movable telescopic cylinder 3. This achieves control over the movement stroke of the electric telescopic cylinder 3.

[0073] The first valve 90, the second valve 8, the fourth valve 91, and valve section I 52 are opened, while the third valve 9, the fifth valve 92, the sixth valve 93, and valve section II 53 are closed, allowing the transformer oil in the transformer tank to flow by gravity into tank section 51. When the transformer oil in the transformer tank no longer flows by gravity into tank section 51, the fourth valve 91 is closed, the third valve 9 is opened, and the electric telescopic cylinder 3 is activated, causing the piston handle of syringe 2 to move outward within the empty cylinder of syringe 2, bringing the electric telescopic cylinder 3 to its extension limit position, allowing the transformer oil to be drawn from the transformer tank into the empty cylinder of syringe 2. The fourth valve 91 is then in an open / closed state, the second valve 8 is closed, and the piston handle of syringe 2 moves inward within the empty cylinder of syringe 2, bringing the electric telescopic cylinder 3 to its extension / contraction position, thus controlling the flow of the transformer oil from the transformer tank into the empty cylinder of syringe 2. Transformer oil in the empty cylinder is injected into tank 51. This process is repeated, drawing transformer oil from the transformer tank and injecting it into tank 51. When level switches I 54 and II 55 detect the level signal of the sampled transformer oil in tank 51, transformer oil is ejected from valve I 52, purging air from tank 51. This closes valves I 52, first valve 90, second valve 8, third valve 9, and fourth valve 91, while opening valve 92. This activates hydraulic pump 94, injecting transformer oil from tank 51 into the transformer tank. When level switches I 54 and II 55 fail to detect the level signal, valve 92 closes, and hydraulic pump 94 deactivates, thus initializing tank 51 by emptying it.

[0074] When sampling of transformer oil for online gas monitoring is required, valves 90, 8, 91, 92, and 93 are opened, while valve 9 is closed. The sampled transformer oil in the transformer tank flows by gravity through tank 51 to the online gas monitoring system. When the sampled transformer oil in the tank cannot flow by gravity to the online gas monitoring system, valve 9 is opened, valve 91 is closed, and the electric telescopic cylinder 3 is at its extension limit position. Valve 8 is closed, valve 91 is opened, and the electric telescopic cylinder 3 is in its extended / retracted position, injecting the sampled transformer oil from tank 51 into the online gas monitoring system under powered conditions. This achieves online gas sampling of the transformer oil. After sampling is completed, valves 90, 8, 91, 92, and 93 are closed.

[0075] When it is necessary to clean the tank section 51, valve section II 53 is opened to drain the residual transformer oil in the tank section 51. After the residual transformer oil in the tank section 51 is drained, valve section II 53 is closed.

[0076] In verifying this utility model, the inventors abandoned the existing technical feature that requires manual extraction of a certain volume of oil sample from the transformer for dissolved gas detection when a transformer malfunctions. Instead, they proposed a technical feature that allows for controlled transport of transformer oil samples under any environmental interference, resulting in the first unexpected technical effect: enabling the transport of sampled transformer oil in a vacuum state, improving the purity of the transformer oil and ensuring the reliable operation of the transformer. The second unexpected technical effect: establishing a pumping oil surge transport channel between the transformer tank and the online monitoring system for gases in the transformer oil, improving the sampling effect of the online monitoring of gases in the transformer oil. The third unexpected effect... Technical effects achieved: The power delivery of sampled transformer oil via syringe 2 and electric telescopic cylinder 3 was realized, improving the sampling efficiency for online monitoring of gas in transformer oil. A fourth unexpected technical effect was achieved: The overflowing sampled transformer oil was stored in the housing 1, preventing negative environmental impacts. A fifth unexpected technical effect was achieved: The stroke control of the electric telescopic cylinder 3 via photoelectric limit switch 4 was implemented, improving the operational reliability of the electric telescopic cylinder 3. A sixth unexpected technical effect was achieved: The tank section 51 was emptied and initialized, pre-processing the sampling process for online monitoring of gas in transformer oil, thus improving the operational reliability of the online monitoring oil sampling device for gas in transformer oil.

[0077] In the second embodiment of this utility model, the oil sampling device body, syringe 2 and electric telescopic cylinder 3 are interconnected in a way that controls the transportation of the oil sampled from the transformer under the influence of interference factors in any environment.

[0078] In this embodiment, the syringe 2 and the electric telescopic cylinder 3 are connected to the oil sampling device body in a manner that facilitates the delivery of transformer oil through powered sampling.

[0079] In this embodiment, the oil sampling device body is configured to also include a transition tank 5, a lower pipe 7, a first valve 90, a second valve 8, a third valve 9, a fourth valve 91, a fifth valve 92, a sixth valve 93, and a hydraulic pump 94.

[0080] In this embodiment, a first accessory device is also included and is disposed between the syringe 2 and the electric telescopic cylinder 3. The first accessory device is configured as a housing 1.

[0081] In this embodiment, a second accessory device is also included and is disposed between the first accessory device and the electric telescopic cylinder 3. The second accessory device is configured as a photoelectric limit switch 4.

[0082] The second embodiment of this utility model is based on the first embodiment.

[0083] This utility model has the following features:

[0084] 1. By designing the oil sampling device body, syringe 2, and electric telescopic cylinder 3, the oil sampling device body realizes the formation of a sampling transformer oil flow channel between the transformer oil tank and the online monitoring of gas in the transformer oil. The syringe 2 and electric telescopic cylinder 3 realize the powered transportation of the oil sampling device body to sample transformer oil. It realizes the controlled transportation of the sampled transformer oil under the influence of interference factors in any environment. It solves the technical problem that when the transformer fails, it is often necessary to manually extract a certain volume of oil sample from the transformer for dissolved gas detection. Therefore, it realizes automatic oil sampling for online monitoring of gas in transformer oil in all weather conditions.

[0085] 2. By designing the transition tank 5, upper pipe 6, lower pipe 7, first valve 90, second valve 8, third valve 9, fourth valve 91, fifth valve 92, sixth valve 93 and hydraulic pump 94, the factors that cause air bubbles to be generated in the sampled transformer oil are eliminated.

[0086] 3. Due to the design of the housing 1, the syringe 2 and the electric telescopic cylinder 3 are accommodated and supported.

[0087] 4. Due to the design of photoelectric limit switch 4, the stroke limit control of electric telescopic cylinder 3 is realized.

[0088] 5. Because the design limits the numerical range of the structural shape, the numerical range is a technical feature in the technical solution of this utility model, and is not a technical feature obtained by formula calculation or a limited number of experiments. The experiment shows that the technical feature of the numerical range has achieved very good technical effect.

[0089] 6. Due to the design of the technical features of this utility model, and the combined effect of the individual technical features and the combination of the features, experiments have shown that the performance indicators of this utility model are at least 1.7 times that of the existing performance indicators, and it has been evaluated that it has great market value.

[0090] Other technical features that connect the oil sampling device body, syringe 2, and electric telescopic cylinder 3 to the oil sampling transformer oil under the influence of interference factors in any environment are also embodiments of this utility model. Furthermore, the technical features of the above embodiments can be combined in any way. In order to meet the requirements of the Patent Law, the Patent Implementation Regulations, and the Examination Guidelines, all possible combinations of the technical features in the above embodiments will not be described.

[0091] Therefore, in the field of transformer oil gas online monitoring and oil sampling device based on all-weather automatic status, all technical contents that include an oil sampling device body with an upper tube 6, a syringe 2 set on the upper tube 6, and an electric telescopic cylinder 3 set on the syringe 2 are within the protection scope of this utility model.

Claims

1. A transformer oil gas online monitoring and sampling device based on all-weather automatic operation, characterized in that: It includes an oil sampling device body with an upper tube (6), a syringe (2) mounted on the upper tube (6), and an electric telescopic cylinder (3) mounted on the syringe (2). The oil sampling device body is configured to also include a transition tank (5), a lower pipe (7), a first valve (90), a second valve (8), a third valve (9), a fourth valve (91), a fifth valve (92), a sixth valve (93), and a hydraulic pump (94). It also includes a first accessory device disposed between the syringe (2) and the electric telescopic cylinder (3), the first accessory device being configured as a housing (1). It also includes a second accessory device and is disposed between the first accessory device and the electric telescopic cylinder (3). The second accessory device is configured as a photoelectric limit switch (4). A syringe (2) is provided on the housing (1), an electric telescopic cylinder (3) is provided between the syringe (2) and the housing (1), and a photoelectric limit switch (4) is provided between the electric telescopic cylinder (3) and the housing (1). An upper pipe (6) is provided between the transformer oil tank and the syringe (2) and the transition tank (5), and a lower pipe (7) is provided between the transition tank (5) and the online gas monitoring of the transformer oil. A first valve (90), a second valve (8), a third valve (9) and a fourth valve (91) are provided on the upper pipe (6), and a fifth valve (92), a sixth valve (93) and a hydraulic pump (94) are provided on the lower pipe (7).

2. The transformer oil gas online monitoring and sampling device based on all-weather automatic status as described in claim 1, characterized in that: The oil sampling device body, syringe (2) and electric telescopic cylinder (3) are interconnected in a controlled manner according to the method of controlling the transportation of the oil sampled by the transformer oil under the influence of interference factors in any environment.

3. The transformer oil gas online monitoring and sampling device based on all-weather automatic status as described in claim 2, characterized in that: Connect the syringe (2) and the electric telescopic cylinder (3) to the body of the oil sampling device in the manner of power sampling transformer oil transportation.

4. The transformer oil gas online monitoring and sampling device based on all-weather automatic status as described in claim 1, characterized in that: The lower part of the periphery of the syringe (2) is configured to be connected to the housing (1) and the piston handle end face of the syringe (2) is configured to be connected to the electric telescopic cylinder (3). The needle of the syringe (2) is configured to be connected to the upper tube (6) through.

5. The transformer oil gas online monitoring and sampling device based on all-weather automatic status as described in claim 1, characterized in that: The electric telescopic cylinder (3) is configured as a servo electric cylinder and the housing of the electric telescopic cylinder (3) is configured to be connected to the seat housing (1). The telescopic ends of the electric telescopic cylinder (3) are respectively configured to be connected to the syringe (2) and the photoelectric limit switch (4).

6. The transformer oil gas online monitoring and sampling device based on all-weather automatic status as described in claim 1, characterized in that: transition... The tank (5) is configured to include a tank section (51), valve section I (52), valve section II (53), level switch I (54) and level switch II (55). The upper end face of the tank section (51) is configured to be connected to valve section I (52), upper pipe (6) and lower pipe (7) respectively. The lower end face of the tank section (51) is configured to be connected to valve section II (53). The upper part of the right side face of the tank section (51) is configured to be connected to level switch I (54), and the lower part of the right side face of the tank section (51) is configured to be connected to level switch II (55).

7. The transformer oil gas online monitoring and sampling device based on all-weather automatic status as described in claim 6, characterized in that: The tank section (51) is configured as a vertical tank-shaped body, and valve section I (52) and valve section II (53) are respectively configured as electric valves, and level switch I (54) and level switch II (55) are respectively configured as level sensors.

8. The transformer oil gas online monitoring and sampling device based on all-weather automatic status as described in claim 1, characterized in that: The upper tube (6) is configured as a cross-shaped cylindrical body with a rubber plug at one of its horizontal ports, and the rubber plug at one of the horizontal ports of the upper tube (6) is configured to be connected to the syringe (2). The upper vertical port of the upper tube (6) is configured to be connected to the transformer oil tank, and the upper vertical cross-section port of the upper tube (6) is configured to be connected to the first valve (90). The lower vertical port of the upper tube (6) is configured to be connected to the transition tank (5), and the lower vertical cross-section port of the upper tube (6) is configured to be connected to the fourth valve (91). The cross-section port located on the inner side of one of the horizontal sections of the upper tube (6) is configured to be connected to the second valve (8), and the cross-section port located on the outer side of one of the horizontal sections of the upper tube (6) is configured to be connected to the third valve (9).

9. The transformer oil gas online monitoring and sampling device based on all-weather automatic status as described in claim 1, characterized in that: The first valve (90), the second valve (8), the third valve (9), and the fourth valve (91) are all electric valves. One port of the first valve (90) is connected to the transformer oil tank. One port of the fourth valve (91) is connected to the transition tank (5). Another port of the first valve (90) is connected to one port of the second valve (8). One port of the third valve (9) is connected to the syringe (2). The other ports of the second valve (8), the third valve (9), and the fourth valve (91) are interconnected.

10. The transformer oil gas online monitoring and sampling device based on all-weather automatic status as described in claim 1, characterized in that: The lower tube (7) is configured as a T-shaped cylindrical body and the vertical end of the lower tube (7) is configured to be submerged and connected to the transition tank (5). The vertical section port of the lower tube (7) is configured to be connected to the fifth valve (92). One of the horizontal ports of the lower tube (7) is configured to be connected to the transformer oil tank. One of the horizontal ports of the lower tube (7) is configured to be connected to the hydraulic pump (94). Another horizontal port of the lower tube (7) is configured to be connected to the online gas monitoring of the transformer oil. Another horizontal port of the lower tube (7) is configured to be connected to the sixth valve (93).

11. The transformer oil gas online monitoring and sampling device based on all-weather automatic status as described in claim 1, characterized in that: The fifth valve (92) and the sixth valve (93) are respectively set as electric valves and the hydraulic pump (94) is set as a plunger pump. One port of the fifth valve (92) is set to be connected to the transition tank (5) and the output port of the hydraulic pump (94) is set to be connected to the transformer oil tank. One port of the sixth valve (93) is set to be connected to the online monitoring of gas in the transformer oil. The other port of the fifth valve (92), the input port of the hydraulic pump (94) and the other port of the sixth valve (93) are set to be mutually connected.

12. The transformer oil gas online monitoring and sampling device based on all-weather automatic status as described in claim 1, characterized in that: The housing (1) is configured to include a box shell (11), a seat part I (12), a seat part II (13) and a seat part III (14). The inner side of the bottom wall of the box shell (11) is connected to the seat part I (12), the middle of the bottom wall of the box shell (11) is connected to the seat part II (13), and the outer side of the bottom wall of the box shell (11) is connected to the seat part III (14). The inner wall of the box shell (11) is connected to the upper tube (6) in a sleeve-type connection. The upper end face of the seat part I (12) is connected to the syringe (2). The seat part II (13) is connected to the photoelectric limit switch (4), and the seat part III (14) is connected to the electric telescopic cylinder (3).

13. The transformer oil gas online monitoring and sampling device based on all-weather automatic status as described in claim 1, characterized in that: The housing (11) is a rectangular box-shaped body and the seat I (12) is a block-shaped body with a C-shaped groove on the upper end face and the C-shaped groove of the seat I (12) is connected to the syringe (2). The seat II (13) is a C-shaped frame-shaped body and the horizontal part of the C-shaped frame of the seat II (13) is connected to the photoelectric limit switch (4). The seat III (14) is a block-shaped body with a C-shaped groove on the upper end face and the C-shaped groove of the seat III (14) is connected to the electric telescopic cylinder (3).

14. The transformer oil gas online monitoring and sampling device based on all-weather automatic status as described in claim 13, characterized in that: The housing of the photoelectric limit switch (4) is configured to be connected to the base housing (1), and the light source contact of the photoelectric limit switch (4) is configured to be connected to the electric telescopic cylinder (3).

15. The transformer oil gas online monitoring and sampling device based on all-weather automatic operation according to any one of claims 1 to 14, characterized in that: transition... The tank (5), upper tube (6), lower tube (7), second valve (8), third valve (9), fourth valve (91), fifth valve (92) and hydraulic pump (94) are arranged with the housing (1), syringe (2) and electric telescopic cylinder (3) in the manner of externally pumping liquid components. The transition tank (5), upper tube (6), lower tube (7), second valve (8), third valve (9), fourth valve (91), fifth valve (92) and hydraulic pump (94) are arranged with the first valve (90) and sixth valve (93) in the manner of port control. The transition tank (5), upper tube (6), lower tube (7), second valve (8), third valve (9), fourth valve (91), fifth valve (92), hydraulic pump (94), housing (1), syringe (2) and electric telescopic cylinder (3) are arranged with the photoelectric limit switch (4) in the manner of limiting the movement stroke.

16. The transformer oil gas online monitoring and sampling device based on all-weather automatic operation according to any one of claims 1 to 14, characterized in that: The center line of the syringe (2) and the center line of the electric telescopic cylinder (3) are set on the same straight line, and two photoelectric limit switches (4) are set between the housing (1) and the syringe (2).

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