Monitoring and processing device for oil-immersed transformer

Abstract

The utility model discloses a monitoring and processing device for an oil-immersed transformer, which particularly relates to the field of transformers and comprises an oil tank, a winding is mounted in the oil tank, a tank cover is movably mounted on the oil tank, a mounting plate is embedded in the tank cover, a gas sensor is mounted on the mounting plate, and a detection end is fixedly arranged at the bottom of the gas sensor. A blocking piece is arranged at the bottom of the detection end and located between the detection end and the liquid level. The blocking piece comprises a left side plate, the left side plate is fixedly arranged at the bottom of the mounting plate through a fixing plate, a middle baffle is fixedly arranged at one end of the left side plate and located under the detection end, and a breathable pad is fixedly arranged in the middle baffle. The bottom of the detection end is provided with the blocking piece for blocking, gas passes through the middle baffle and enters the hollow sleeve, and splashed insulating mineral oil is filtered by the breathable pad, so that the splashed insulating mineral oil is effectively prevented from being attached to the inner wall of the detection end, and the gas cannot be influenced to enter the internal space of the detection end.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer technical field more specifically, the utility model relates to an oil immersed transformer monitoring processing device. BACKGROUND

[0002] The core of oil immersed transformer mainly comprises winding, insulating component and oil tank, the insulating component adopts oil-paper system, that is, insulating paper is used to wrap the coil of transformer to form winding, then the winding with insulating paper is put into the oil tank, then insulating mineral oil is added into the oil tank and covers the winding, finally the cover of the oil tank is covered and the oil tank is vacuumized.

[0003] The insulating paper is made of wood pulp as raw material and mainly consists of cellulose, the aging of cellulose depends on its degradation degree, with the increase of service time, the insulating paper will age and degrade, the aging and degradation of the insulating paper will produce some gases and dissolved substances, such as carbon dioxide, carbon monoxide, ethylene, etc., too much gas accumulation will form bubbles in the insulating mineral oil, and will also promote the oxidation and degradation of the insulating mineral oil, leading to the accelerated deterioration of the insulating mineral oil, thereby reducing the insulation performance of the insulating mineral oil, therefore, in order to ensure the safe operation of the transformer, the aging degree of the insulating paper needs to be checked regularly.

[0004] The prior art installs carbon dioxide gas sensor (hereinafter referred to as gas sensor) in the top of the oil tank, the working principle of the gas sensor is: based on the ability of carbon dioxide molecules to absorb specific wavelength infrared light, when infrared light passes through the gas sample containing carbon dioxide molecules, the carbon dioxide molecules are subjected to specific wavelength infrared light, by measuring the amount of absorbed light, the concentration of carbon dioxide in the sample is analyzed; the gas sensor is located above the liquid level of the insulating mineral oil, since the oil tank is in a vacuum state, in order to timely and quickly monitor the carbon dioxide gas, the detection end of the gas sensor needs to be as close as possible to the liquid level of the insulating mineral oil, when the gas sensor monitors the carbon dioxide gas in the oil tank, the alarm will issue an alarm prompt to remind the maintenance personnel to timely extract the gas in the oil tank.

[0005] When the transformer is working, the winding generates heat and increases the temperature of the insulating mineral oil, so that the bubbles in the insulating mineral oil rise to the surface and break, when the temperature of the insulating mineral oil is too high, the liquid level will appear "boiling" phenomenon, causing the bubbles to break and splash in the liquid level of the insulating mineral oil, the splashed insulating mineral oil will adhere to the detection end of the gas sensor, too much adhered insulating mineral oil will affect the detection effect of the gas sensor, the prior art sets a horizontal plate at the bottom of the detection end of the gas sensor to block the splashed insulating mineral oil, however, at this time, the gas can only contact the detection end from the narrow space between the gas sensor and the horizontal plate, resulting in slow detection speed. SUMMARY

[0006] The utility model provides an oil -immersed transformer monitoring processing device, the problem to be solved is that the existing oil -immersed transformer monitoring processing device sets up the horizontal plate at the bottom of gas sensor detection end and influences the space of gas entering the inside of detection end.

[0007] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: an oil -immersed transformer monitoring processing device, including the oil tank, the inside installation of oil tank has winding, the movable installation of oil tank is covered, and the inside embedding of covered is installed with mounting panel, and the installation of mounting panel has gas sensor, and the bottom fixed of gas sensor is equipped with detection end, and the bottom of detection end is equipped with blocking piece, and blocking piece is located between detection end and liquid level;Blocking piece includes left side plate, and left side plate is fixed with the bottom of mounting panel through fixed plate, and one end of left side plate is fixed with middle baffle, and middle baffle is located directly below detection end, and the inside fixed of middle baffle has air -permeable pad, and the one end fixed connection of middle baffle away from left side plate has right side plate, and the half of left side plate corresponding middle baffle and the half of right side plate corresponding middle baffle are all set up to the inclination of going up.

[0008] In a preferred embodiment, the outer side of the gas sensor is sleeved with a movable plate, a placing opening is formed in the middle of the movable plate, the gas sensor passes through the inside of the placing opening, a linear drive mechanism is installed in the inside of the mounting plate, the output end at the bottom of the linear drive mechanism is fixedly connected with the movable plate, a connecting rod is rotatably connected between the movable plate and the right side plate, a telescopic member is arranged in the inside of the middle baffle, when the linear drive mechanism drives the movable plate to descend, the right side plate is driven to move towards the middle baffle through the connecting rod, and the telescopic member is contracted inwards.

[0009] In a preferred embodiment, the telescopic member includes a telescopic column, telescopic grooves are formed in the inside of the middle baffle corresponding to the two ends of the telescopic column, when the telescopic member is contracted inwards, the two ends of the telescopic column slide along the inside of the corresponding telescopic grooves respectively, and the air-permeable pad is extruded and contracted.

[0010] In a preferred embodiment, an air exhaust mechanism is installed on the mounting plate, a negative pressure pump is connected to the air outlet end of the air exhaust mechanism, and the air inlet end of the air exhaust mechanism is arranged at the inside top end of the oil tank.

[0011] In a preferred embodiment, the air exhaust mechanism includes an air exhaust cylinder, the air exhaust cylinder is fixedly inserted into the inside of the mounting plate, the bottom of the air exhaust cylinder is the air inlet end, a closing member is movably arranged in the inside of the air inlet end of the air exhaust cylinder, the closing member is fixedly arranged on the movable plate, a guide column is fixedly arranged on one side of the fixed plate, and the guide column penetrates into the inside of the movable plate.

[0012] In a preferred embodiment, the closing member includes a movable joint, a suction hood is communicated with the bottom end of the movable joint through a hose, a flow inlet is arranged at the bottom of the detection end, a flow outlet is formed in the outside of the detection end, and the suction hood and the flow outlet are communicated.

[0013] The utility model discloses beneficial effect lies in:

[0014] The utility model discloses a blocking piece is set up and blocks at the bottom of detection end, and gas passes through the middle baffle and enters the inside of hollow sleeve, and the splashed insulating mineral oil is filtered by the air -permeable pad, effectively avoids the insulating mineral oil of splashing and adhering in the inner wall of detection end, and simultaneously will not influence the space of gas entering the inside of detection end.

[0015] The utility model discloses through linear drive mechanism drive movable plate drop, through connecting rod push right -hand plate to middle baffle close, and middle baffle inwards contracts, and the air -permeable pad is extruded and contracts, and its inside insulating mineral oil is squeezed out and drops down. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model.

[0017] Figure 2 It is the oil tank internal structure schematic diagram of the utility model.

[0018] Figure 3 It is the box cover cross section structure schematic diagram of the utility model.

[0019] Figure 4 It is the blocking piece cross section structure schematic diagram of the utility model.

[0020] Figure 5 It is the exhaust cylinder cross section structure schematic diagram of the utility model.

[0021] Figure 6 It is the movable plate cross section structure schematic diagram of the utility model.

[0022] The figure mark is: 1, oil tank;11, winding;2, box cover;21, fixed plate;22, guide column;3, mounting plate;4, gas sensor;41, detection end;42, outlet;5, blocking piece;51, left side plate;52, right side plate;53, middle baffle;54, air -permeable pad;55, telescopic groove;56, telescopic column;6, exhaust cylinder;61, air extraction cover;62, movable joint;7, movable plate;71, placing mouth;8, linear drive mechanism;9, connecting rod;A, liquid level. DETAILED DESCRIPTION

[0023] The following detailed description of the application in conjunction with the drawings, it is necessary to point out here that the following detailed description only for the further description of the application, can not be understood as the limitation of the scope of the application, the skilled in the art can make some non-essential improvements and adjustment to the application according to the above application content.

[0024] Refer to the description accompanying Figures 1 to 4The utility model relates to an oil-immersed transformer monitoring processing device, which comprises an oil tank 1, a winding 11 installed in the inside of the oil tank 1, a tank cover 2 movably installed on the oil tank 1, an installation plate 3 embedded in the inside of the tank cover 2, a gas sensor 4 installed on the installation plate 3, a detection end 41 fixedly arranged at the bottom of the gas sensor 4, a blocking piece 5 arranged at the bottom of the detection end 41, and the blocking piece 5 located between the detection end 41 and a liquid surface A.

[0025] It should be noted that the middle bottom section of the blocking piece 5 is a trapezoidal groove, and the gas is concentrated to pass through the middle blocking plate 53 along the inclined surface of the trapezoidal groove and enter the inside of the hollow sleeve, the detection end 41 is a hollow sleeve, the gas enters the inside of the hollow sleeve for detection, and the air-permeable pad 54 is a sponge pad.

[0026] In the embodiment, the implementation scenario is specifically as follows: the winding 11 is placed in the inside of the oil tank 1, insulating mineral oil is poured into the inside of the oil tank 1 to submerge the winding 11, the tank cover 2 is covered, and the inside of the oil tank 1 is vacuumized at this time, the blocking piece 5 is located above the liquid surface A, the service life needs to be detected before leaving the factory, the oil tank 1 is placed on a detection platform, the working scenario of the oil tank 1 is simulated in a set limit environment, the loss data of each component of the oil tank 1 after use is obtained, and the customer is reminded to regularly overhaul each component of the oil tank 1 according to the data, the winding 11 generates a large amount of heat in the limit environment, the insulating paper of the winding 11 rapidly ages to generate gas, in order to prevent the gas from forming bubbles and splashing to the detection end 41 after breaking on the insulating mineral oil liquid surface A, the blocking piece 5 is arranged at the bottom of the detection end 41 to block, the gas passes through the middle blocking plate 53 and enters the inside of the hollow sleeve, the splashed insulating mineral oil is filtered out by the air-permeable pad 54, the splashed insulating mineral oil is effectively prevented from adhering to the inner wall of the detection end 41, and meanwhile, the space for the gas to enter the inside of the detection end 41 is not affected.

[0027] Further, the outside of the gas sensor 4 is sleeved with a movable plate 7, a placing opening 71 is formed in the middle of the movable plate 7, the gas sensor 4 passes through the inside of the placing opening 71, a linear driving mechanism 8 is installed in the inside of the installation plate 3, the output end at the bottom of the linear driving mechanism 8 is fixedly connected with the movable plate 7, a connecting rod 9 is rotationally connected between the movable plate 7 and the right side plate 52, a telescopic piece is arranged in the inside of the middle blocking plate 53, when the linear driving mechanism 8 drives the movable plate 7 to descend, the right side plate 52 is driven to move to the middle blocking plate 53 through the connecting rod 9, and the telescopic piece is contracted inwards.

[0028] Further, the telescopic member comprises a telescopic column 56, both ends of the telescopic column 56 are provided with telescopic grooves 55 in the inside of the middle baffle 53, when the telescopic member is contracted to the inside, both ends of the telescopic column 56 slide along the inside of the corresponding telescopic grooves 55 respectively, so that the air permeable pad 54 is extruded and contracted.

[0029] It should be noted that both ends of the telescopic column 56 are provided in T-shaped structure, so as to prevent the telescopic column 56 from being separated from the inside of the telescopic groove 55, when too much insulating mineral oil is adhered to the air permeable pad 54, the passing of the gas will be affected, therefore, the straight line driving mechanism 8 drives the movable plate 7 to descend, the right side plate 52 is pushed to the middle baffle 53 by the connecting rod 9, the middle baffle 53 is contracted to the inside, so that the air permeable pad 54 is extruded and contracted, the middle baffle 53 is divided into a plurality of scattered blocks by the air permeable pad 54, the plurality of scattered blocks are supported by the telescopic groove 55 and the telescopic column 56, a placing space with trapezoidal cross section is left between two adjacent scattered blocks, the placing space is small at the top and large at the bottom, therefore, when the air permeable pad 54 is extruded, the insulating mineral oil in the inside of the air permeable pad 54 is extruded and falls down, when the straight line driving mechanism 8 drives the movable plate 7 to move upward, the air permeable pad 54 restores to the original state and continues the filtering work.

[0030] In the above embodiment, in order to quickly concentrate the gas into the detection end 41, the utility model also provides the following technical scheme:

[0031] Referring to the description accompanying drawings Figure 2 , Figure 5 and Figure 6 , the installation plate 3 is provided with an exhaust mechanism, the exhaust end of the exhaust mechanism is connected with a negative pressure pump, and the air inlet end of the exhaust mechanism is arranged at the inside top end of the oil tank 1.

[0032] Further, the exhaust mechanism comprises an exhaust cylinder 6, the exhaust cylinder 6 is fixedly inserted into the inside of the installation plate 3, the bottom of the exhaust cylinder 6 is the air inlet end, the air inlet end of the exhaust cylinder 6 is movably provided with a sealing element, the sealing element is fixedly arranged on the movable plate 7, one side of the fixed plate 21 is fixedly provided with a guide column 22, and the guide column 22 penetrates into the inside of the movable plate 7.

[0033] Further, the sealing element comprises a movable joint 62, the bottom end of the movable joint 62 is communicated with a suction hood 61 through a hose, the bottom of the detection end 41 is provided with an inflow port, the outside of the detection end 41 is provided with an outflow port 42, and the suction hood 61 is communicated with the outflow port 42.

[0034] It should be noted that the negative pressure pump is installed outside the oil tank 1, when the movable joint 62 enters the bottom of the corresponding exhaust cylinder 6, the exhaust cylinder 6 and the detection end 41 can be communicated.

[0035] In the embodiment, the specific implementation scene is: the negative pressure pump is started, the detection end 41 is arranged to generate negative pressure through the exhaust cylinder 6, the exhaust hood 61 and the movable joint 62, so that the gas in the oil tank 1 is extracted, the gas in the oil tank 1 is concentrated into the detection end 41 for detection, the detection is faster, and the above mode is operated according to the actual application scene, for example, the negative pressure pump is started once every two hours, when the detected gas concentration exceeds the set value, the set value is the allowable gas concentration value in the oil tank 1, the linear driving mechanism 8 is started to drive the movable plate 7 to descend, the movable joint 62 is separated from the bottom of the exhaust cylinder 6, so that the bottom of the exhaust cylinder 6 is completely opened, the exhaust speed is accelerated, the accumulation speed of the gas in the oil tank 1 is avoided to be faster than the exhaust speed, and the exhaust efficiency is improved.

[0036] The above embodiment only expresses several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a plurality of deformations and improvements can be made, which belong to the protection range of the utility model.

Claims

1. A monitoring and processing device for an oil-immersed transformer, comprising an oil tank (1), wherein a winding (11) is installed inside the oil tank (1), a tank cover (2) is movably installed on the oil tank (1), a mounting plate (3) is embedded inside the tank cover (2), and a gas sensor (4) is installed on the mounting plate (3), characterized in that: The gas sensor (4) has a detection end (41) fixedly provided at the bottom, and a blocking member (5) is provided at the bottom of the detection end (41). The blocking member (5) is located between the detection end (41) and the liquid surface (A). The blocking member (5) includes a left side plate (51), which is fixed to the bottom of the mounting plate (3) by a fixing plate (21). A middle baffle (53) is fixedly provided at one end of the left side plate (51), and the middle baffle (53) is located directly below the detection end (41). A breathable pad (54) is fixedly provided inside the middle baffle (53). A right side plate (52) is fixedly connected to the end of the middle baffle (53) away from the left side plate (51). The half of the left side plate (51) corresponding to the middle baffle (53) and the half of the right side plate (52) corresponding to the middle baffle (53) are both inclined upwards.

2. The monitoring and processing device for an oil-immersed transformer according to claim 1, characterized in that: A movable plate (7) is fitted on the outside of the gas sensor (4). A placement opening (71) is provided in the middle of the movable plate (7). The gas sensor (4) passes through the placement opening (71). A linear drive mechanism (8) is installed inside the mounting plate (3). The output end of the bottom of the linear drive mechanism (8) is fixedly connected to the movable plate (7). A connecting rod (9) is rotatably connected between the movable plate (7) and the right side plate (52). A telescopic component is provided inside the middle baffle (53). When the linear drive mechanism (8) drives the movable plate (7) to descend, the connecting rod (9) drives the right side plate (52) to move towards the middle baffle (53), causing the telescopic component to retract inward.

3. The oil-immersed transformer monitoring and processing device according to claim 2, characterized in that: The telescopic component includes a telescopic column (56). The middle baffle (53) has telescopic grooves (55) at both ends of the telescopic column (56). When the telescopic component retracts inward, the two ends of the telescopic column (56) slide along the corresponding telescopic grooves (55) to compress and shrink the breathable pad (54).

4. The monitoring and processing device for an oil-immersed transformer according to claim 3, characterized in that: An exhaust mechanism is installed on the mounting plate (3). The exhaust end of the exhaust mechanism is connected to a negative pressure pump, and the intake end of the exhaust mechanism is located at the top of the inside of the oil tank (1).

5. The oil-immersed transformer monitoring and processing device according to claim 4, characterized in that: The exhaust mechanism includes an exhaust pipe (6), which is fixedly inserted inside the mounting plate (3). The bottom of the exhaust pipe (6) is the air inlet, and a sealing member is movably provided inside the air inlet of the exhaust pipe (6). The sealing member is fixedly provided on the movable plate (7). A guide post (22) is fixedly provided on one side of the fixed plate (21), and the guide post (22) penetrates through the interior of the movable plate (7).

6. The monitoring and processing device for an oil-immersed transformer according to claim 5, characterized in that: The closure includes a movable connector (62), the bottom end of which is connected to an air extraction hood (61) via a hose. The bottom of the detection end (41) is provided with an inlet, and the outer side of the detection end (41) is provided with an outlet (42). The air extraction hood (61) and the outlet (42) are connected.

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