CN117740466B - Insulating oil liquid taking device with liquid level control function and liquid taking method - Google Patents

Abstract

The invention relates to the field of liquid taking devices and discloses an insulating oil liquid taking device with liquid level control and a liquid taking method, which effectively solve the problem that the liquid level of insulating oil needed in a sampling cup is difficult to control when the insulating oil is sampled at present.

Description

Insulating oil liquid taking device with liquid level control function and liquid taking method

Technical Field

The invention belongs to the field of liquid taking devices, and particularly relates to an insulating oil liquid taking device with liquid level control and a liquid taking method.

Background

The insulating oil is a lubricating oil, which is usually prepared by adding an antioxidant into a deeply refined lubricating oil base oil, and is mainly used as a dielectric medium of electrical equipment. The main properties of insulating oils are low temperature properties, oxidation stability and dielectric losses. The low temperature performance refers to the fluidity necessary for the oil to automatically convect in the electric equipment, conduct out heat and instantaneously cut off the arc current under the low temperature condition. It is generally desirable that the pour point of the insulating oil be low and that the viscosity be relatively low at low temperatures. In electrical equipment, oil is oxidized for a long period of time by heat and oxygen under the influence of an electric field. The oil products added with the antioxidant and the metal passivating agent have better oxidation stability. The dielectric loss is the degree reflecting the dielectric loss of oil under alternating current electric field, and at present, most of the power industries generally realize semi-automatization in the form of manpower in insulating oil withstand voltage value test, a large amount of manpower is required, and the phenomenon of cross contamination between oil stains and samples easily occurs in work, so that in work, insulating oil needs to be sampled and detected from time to time, insulating oil is generally sucked through a piston tube, but the following defects still exist:

when insulating oil sampling is carried out, the liquid level of the insulating oil required in the sampling cup is not easy to control, after sampling, the liquid level of the insulating oil in the sampling cup is required to be observed, oil supplementing or oil discharging is carried out again, so that the sampling operation is more troublesome, as a period of time is required for laboratory analysis from oil sampling to oil sampling, particles in the oil sample can be continuously settled or even layered during the period, the accuracy of inspection is influenced, and in the process of moving the oil sample, the oil liquid caused by shaking of the device can be scattered, and in the process of draining the oil liquid, the blocking situation can occur, the liquid draining speed can not be correspondingly controlled according to the height of the liquid draining, and the error and lower liquid draining efficiency can be caused.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the insulating oil liquid taking device with the liquid level control and the liquid taking method, which effectively solve the problem that the liquid level of the insulating oil needed in a sampling cup is not easy to control when the insulating oil is sampled at present.

In order to achieve the above purpose, the present invention provides the following technical solutions: the insulating oil liquid taking device with the liquid level control comprises a liquid taking cup, wherein an insulating oil liquid taking mechanism is arranged above the liquid taking cup;

The insulating oil liquid taking mechanism comprises a liquid taking pipe, a liquid storage cavity is formed in the liquid taking pipe, an oil suction pipe is arranged on one side of the liquid taking pipe, a liquid level control unit is arranged at the bottom end of the liquid taking pipe, and an oil suction control unit is arranged in the liquid storage cavity;

The liquid level control unit is including locating the holding ring stopper of getting liquid pipe below, the below of holding ring stopper is equipped with the oil float dog, the kerve has been seted up to the bottom of holding ring stopper, the middle part of holding ring stopper is equipped with the elastic air bag, the holding ring stopper top with get the both sides symmetry between the liquid pipe bottom and install out the oil pipe, two inlet has been seted up to the upper end of elastic air bag, two the inlet respectively with go out oil pipe lower extreme and communicate each other, the liquid outlet has been seted up to the lower extreme both sides of elastic air bag, the liquid outlet with the kerve communicates each other, the diameter of inlet is greater than the diameter of liquid outlet, the inside symmetry of getting the liquid pipe has been seted up first movable groove, the inside of first movable groove is equipped with electromagnetic valve, the inside pressure sensor that is equipped with of elastic air bag, the upper end of oil float dog is equipped with the second limit head, the top of second limit head is equipped with displacement sensor.

Preferably, the annular groove is set up to the inboard of holding ring stopper, the annular groove diameter is greater than get the external diameter of liquid pipe, the base tank with the oil float dog all sets up to round platform form, just the oil float dog with base tank looks adaptation, the oil pipe is L type setting, the vertical section of oil pipe is located the inside of first movable groove, the bottom of oil pipe with base tank slope roof below is linked together, the top of first movable groove with liquid storage intracavity portion is linked together, first spacing head is installed on the top of oil pipe, first spacing head is installed the inside of first movable groove, the outer wall of first spacing head with the inner wall of first movable groove is contradicted each other, the top pole is installed on the top of oil float dog, the top of top pole with the second spacing head interconnect, second spacing head slidable mounting is in the inside of second movable groove, the second movable groove is located the bottom of getting the liquid of pipe.

Preferably, the both sides symmetry of getting the liquid pipe is installed the curb plate, the curb plate is kept away from the one end of getting the liquid pipe is equipped with telescopic buckle, the buckle card is in get on the cup edge of liquid cup, two the roof of curb plate with get the cup edge of liquid cup flushes mutually, one of them offer the helicoidal groove on the curb plate, the inside threaded connection of helicoidal groove has the pull rod, the commentaries on classics handle is installed on top of pull rod, spacing commentaries on classics piece is installed to the bottom of pull rod, the top fixed mounting of holding ring stopper has fixed change cover, spacing commentaries on classics piece rotation is installed the inside of fixed change cover, another offer the board groove on the curb plate, the inside slidable mounting of board groove has the scale plate, the bottom fixed mounting of scale plate is in on the roof of holding ring stopper, the internally mounted of scale plate has out oil control unit.

Preferably, the oil outlet control unit comprises a longitudinal rod groove arranged in the scale plate, the top end of the longitudinal rod groove penetrates to the top end of the scale plate, the bottom end of the longitudinal rod groove penetrates to the lower part of the horizontal top wall of the bottom groove, a rotating rod is rotatably arranged in the longitudinal rod groove, a rotating handle is arranged at the top end of the rotating rod, the bottom wall of the rotating handle is in contact with the top wall of the scale plate, a limiting plate is arranged at the bottom end of the rotating rod, and the top wall of the limiting plate is in contact with the horizontal top wall of the bottom groove.

Preferably, the bottom rod is installed to the bottom of limiting plate, the side fixture block is installed in the outside of bottom rod, be equipped with the joint module on the oil float dog, the diameter of bottom rod is less than the diameter of limiting plate, the joint module is located the below of bottom rod, inhale oil pipe with the bottom of stock solution chamber is linked together, the inside movable mounting in stock solution chamber has the oil absorption piston, the piston rod is installed on the top of oil absorption piston, the top of piston rod runs through to get the top of liquid pipe, the arm-tie is installed on the top of piston rod.

Preferably, the clamping module comprises a top groove arranged on the horizontal top wall of the oil float stop block, the diameter of the top groove is the same as that of the limiting plate, a middle groove is arranged at the bottom end of the top groove, the diameter of the middle groove is the same as that of the bottom rod, a bottom groove is arranged at the bottom end of the middle groove, a side groove is arranged at one side of the middle groove, two ends of the side groove are respectively communicated with the top groove and the bottom groove, the length of the side groove is the same as that of the side clamping block, and the side groove is positioned below the side clamping block.

Preferably, the oil absorption control unit is including installing the inside rotation fender cover of stock solution chamber, the bottom of rotating fender cover is open setting, rotate the outer wall of fender cover with the inner wall in stock solution chamber is hugged closely, rotate the top of fender cover with piston rod swing joint, rotate the inner wall of fender cover with the outer wall of oil absorption piston is hugged closely, it is close to rotate fender cover one side of oil absorption pipe has seted up the intercommunication groove, the arc spout has been seted up on the top of getting the liquid pipe, arc slide is installed on the top of rotating fender cover, arc slide slidable mounting is in the inside of arc spout.

Preferably, the arc chute is kept away from two joint grooves have been seted up on the inner wall of one side of piston rod, the inside of arc slide has been seted up horizontal pole groove, horizontal pole groove runs through to the arc slide is kept away from one side of piston rod, the inside movable mounting in horizontal pole groove has the clamping rod, the clamping rod joint in one of them the inside in joint groove, the guide way has been seted up to the bilateral symmetry in horizontal pole groove, the guide block is installed to the bilateral symmetry in joint groove, guide block sliding connection is in the inside in guide way, the guide block is kept away from one side of joint groove installs the spring, one end of spring with the guide way is kept away from one side inner wall fixed connection in joint groove.

Preferably, the clamping rod is far away from one side of the clamping groove and is provided with a pressed block, the pressed block is arranged into a triangular shape, the top of the transverse rod groove is provided with a movable groove, a balancing weight is movably arranged in the movable groove, the bottom of the balancing weight is provided with a pressing block, the bottom of the pressing block is in sliding connection with the top of the pressed block, the top of the balancing weight is provided with a top rod, the top of the top rod penetrates through the top of the arc-shaped sliding plate, and the top of the top rod is provided with a pull handle.

Preferably, a liquid taking method comprises the following steps:

S1: the oil suction pipe is extended into the oil by controlling the communication condition of the oil suction pipe and the liquid taking pipe, and the oil suction piston is pulled to suck insulating oil into the liquid storage cavity, so that the extraction of an oil sample is completed;

S2: the liquid taking pipe is arranged on the liquid taking cup, the positioning ring plug is pushed to move downwards, and the positioning ring plug is pushed to the position, with the cooperation of the scale plate, of the bottom wall of the positioning ring plug to be positioned at the position of the required liquid level height;

S3: the pulling plate is pressed back and forth to enable oil to enter the elastic air bag to be mixed evenly, whether the oil way is blocked or not is judged according to the change of the numerical value of the pressure sensor, and the blocking position is cleared through the cooperation of the pulling plate and the elastic air bag;

S4: the rotating rod is controlled to rotate so that the oil float stop block is separated from the positioning ring plug, insulating oil enters the liquid taking cup from the bottom end of the elastic air bag, the position of the oil float stop block is identified through the displacement sensor, the liquid inlet amount of the elastic air bag is correspondingly regulated, and the bottom end of the elastic air bag is closed under the action of buoyancy, so that liquid inlet is completed.

Compared with the prior art, the invention has the beneficial effects that:

(1) According to the invention, the two electromagnetic valves are matched with the communicating groove, so that the inner cavity of the liquid taking pipe can form a closed space, insulating oil is filled in the space, and the pulling plate cannot automatically move under the action of atmospheric pressure by moving the device, so that the insulating oil is prevented from being scattered or polluted in the moving process, and the waste of the insulating oil is reduced;

(2) According to the invention, the standing oil can be uniformly mixed by pressing the pulling plate in a reciprocating manner and matching with the elastic air bag, and whether the oil outlet pipe is blocked in the current state can be obtained according to the corresponding relation between the pressure change condition inside the elastic air bag and the pressing force of the pulling plate and the state condition that the elastic air bag is reset by itself;

(3) According to the invention, through the cooperation of the pressure sensor and the displacement sensor, whether the liquid outlet at the bottom of the elastic air bag is blocked or not can be identified, and meanwhile, the pulling plate is controlled to cooperate with the elastic air bag to perform corresponding actions, so that the problem of blocking the bottom of the elastic air bag is solved;

(4) According to the invention, the height and the moving speed of the oil float stop block are identified through the displacement sensor, the liquid discharge speed is identified through the pressure sensor in the elastic air bag, and the adjustment of different liquid discharge speeds is realized according to different heights, so that the dynamic adjustment of the whole liquid discharge process is realized, the overall liquid discharge efficiency is accelerated, and meanwhile, the liquid discharge error is further reduced;

(5) According to the invention, the oil float stop block is arranged in a circular truncated cone shape, the bottom groove is arranged in a circular truncated cone groove shape, the liquid outlet pipe of the oil outlet pipe is arranged on the inclined top wall of the bottom groove, when oil is discharged, the oil can fall on the inclined wall of the bottom groove and slide into the liquid taking cup along the inclined wall, so that the oil is buffered, the insulating oil can smoothly enter the liquid taking cup, and the insulating oil is prevented from splashing.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, do not limit the invention;

In the drawings:

FIG. 1 is a schematic diagram of an insulating oil liquid extracting device with liquid level control;

FIG. 2 is a schematic diagram of an insulating oil liquid-taking mechanism according to the present invention;

fig. 3 is a schematic diagram of the oil absorption control unit according to the present invention;

FIG. 4 is a schematic view of an arc-shaped skateboard structure of the present invention;

FIG. 5 is a schematic diagram of the liquid level control unit according to the present invention;

FIG. 6 is a schematic view of a retaining ring plug according to the present invention;

FIG. 7 is an enlarged schematic view of a portion of FIG. 6A in accordance with the present invention;

FIG. 8 is a schematic view of an oil float stop of the present invention;

FIG. 9 is a schematic view of a clamping module according to the present invention;

FIG. 10 is a schematic view of the mating of the retainer ring plug of the present invention with an elastic balloon;

FIG. 11 is a schematic cross-sectional view of an elastic balloon according to the present invention;

In the figure: 1. a liquid taking cup; 2. an insulating oil liquid taking mechanism; 201. a liquid taking tube; 202. a side plate; 203. a buckle; 204. an oil suction pipe; 205. an oil suction piston; 206. a piston rod; 207. pulling a plate; 208. a liquid level control unit; 2081. positioning a ring plug; 2082. an oil outlet pipe; 2083. a first positioning head; 2084. a first movable groove; 2085. an annular groove; 2086. a bottom groove; 2087. an oil float stop; 2088. a top bar; 2089. a second positioning head; 20810. a second movable groove; 20811. a screw groove; 20812. a pull rod; 20813. a rotating handle; 20814. fixing the rotating sleeve; 20815. a plate groove; 20816. a scale plate; 20817. an elastic air bag; 20818. a liquid inlet; 20819. a liquid outlet; 209. an oil absorption control unit; 2091. rotating the retaining sleeve; 2092. a communication groove; 2093. an arc chute; 2094. an arc-shaped sliding plate; 2095. a clamping groove; 2096. a transverse bar slot; 2097. a guide groove; 2098. a clamping rod; 2099. a guide block; 20910. a spring; 20911. pressing blocks; 20912. a moving groove; 20913. extruding a block; 20914. balancing weight; 20915. a push rod; 20916. a pull handle; 210. an oil outlet control unit; 2101. a longitudinal rod groove; 2102. a rotating lever; 2103. a rotating handle; 2104. a limiting plate; 2105. a bottom bar; 2106. a side clamping block; 2107. a clamping module; 21071. a top groove; 21072. a middle groove; 21073. a side groove; 21074. a bottom groove.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Embodiment one:

the invention provides an insulating oil liquid taking device with liquid level control, which is provided with an insulating oil liquid taking mechanism 2, wherein the insulating oil liquid taking mechanism 2 is arranged above a liquid taking cup 1;

the insulating oil liquid taking mechanism 2 comprises a liquid taking pipe 201, side plates 202 are symmetrically arranged on two sides of the liquid taking pipe 201, a telescopic buckle 203 is arranged at one end, far away from the liquid taking pipe 201, of the side plates 202, the buckle 203 is clamped on the cup edge of the liquid taking cup 1, the top wall of the side plates 202 is flush with the cup edge of the liquid taking cup 1, a liquid storage cavity is formed in the liquid taking pipe 201, an oil suction pipe 204 is arranged on one side of the liquid taking pipe 201, the oil suction pipe 204 is communicated with the bottom of the liquid storage cavity, an oil suction piston 205 is movably arranged in the liquid storage cavity, a piston rod 206 is arranged at the top end of the oil suction piston 205, the top end of the piston rod 206 penetrates to the upper side of the liquid taking pipe 201, a pull plate 207 is arranged at the top end of the piston rod 206, a liquid level control unit 208 is arranged at the bottom end of the liquid taking pipe 201, and an oil suction control unit 209 is arranged in the liquid storage cavity;

The liquid level control unit 208 comprises a positioning ring plug 2081 arranged below the liquid taking pipe 201, an annular groove 2085 is formed in the inner side of the positioning ring plug 2081, the diameter of the annular groove 2085 is larger than the outer diameter of the liquid taking pipe 201, a bottom groove 2086 is formed in the bottom end of the positioning ring plug 2081, an oil float stop block 2087 is arranged below the positioning ring plug 2081, the bottom groove 2086 and the oil float stop block 2087 are both in a circular truncated cone shape, the oil float stop block 2087 is matched with the bottom groove 2086, an oil outlet pipe 2082 is symmetrically arranged on two sides between the top end of the positioning ring plug 2081 and the bottom end of the liquid taking pipe 201, the oil outlet pipe 2082 is L-shaped, the vertical section of the oil outlet pipe 2082 is positioned in the first movable groove 2084, the bottom end of the oil outlet pipe 2082 is communicated with the lower part of the inclined top wall of the bottom groove 2086, the first movable groove 2084 is symmetrically arranged in the liquid taking pipe 201, the top end of the first movable groove 2084 is communicated with the inside of the liquid storage cavity, the top end of the oil outlet pipe 2082 is provided with a first limiting head 2083, the first limiting head 2083 is arranged in the first movable groove 2084, the outer wall of the first limiting head 2083 is mutually abutted with the inner wall of the first movable groove 2084, the top end of the oil float baffle 2087 is provided with a top rod 2088, the top end of the top rod 2088 is provided with a second limiting head 2089, the second limiting head 2089 is slidably arranged in a second movable groove 20810, a small through hole is arranged in the second limiting head 2089, the movement of the oil float stop 2087 can be conveniently not influenced by air pressure, the second movable groove 20810 is arranged at the bottom end of the liquid taking pipe 201, one side plate 202 is provided with a screw groove 20811, the internal thread of the screw groove 20811 is connected with a pull rod 20812, the top end of the pull rod 20812 is provided with a rotating handle 20813, the bottom end of the pull rod 20812 is provided with a limiting rotating block, the top end of the positioning ring plug 2081 is fixedly provided with a fixed rotating sleeve 20814, the limit rotating block is rotatably arranged in the fixed rotating sleeve 20814, the other side plate 202 is provided with a plate groove 20815, a scale plate 20816 is slidably arranged in the plate groove 20815, the bottom end of the scale plate 20816 is fixedly arranged on the top wall of the positioning ring plug 2081, an oil outlet control unit 210 is arranged in the scale plate 20816, after the liquid taking pipe 201 is arranged at the top of the liquid taking cup 1, as the oil float stop 2087 is positioned in the bottom groove 2086 at the bottom end of the positioning ring plug 2081, the bottom groove 2086 seals the oil outlet pipe 2082, the pull rod 20812 is rotated to push the positioning ring plug 2081 to move downwards, the positioning ring plug 2081 is pushed to the bottom wall of the positioning ring plug 2081 to be at the required liquid level through the scale plate 20816, the oil is started to be fed after the oil float stop 2087 is loosened, when the oil float stop 2087 moves back to the inside of the bottom groove 2086 under the buoyancy effect, the oil feeding is stopped, so that the liquid level of the insulating oil is positioned at the required liquid level, the required liquid level of the insulating oil is controlled, the oil float stop 2087 is arranged to be in a circular table shape, the bottom groove 2086 is arranged to be in a circular table groove shape, the liquid outlet pipe of the oil outlet pipe 2082 is arranged on the inclined top wall of the bottom groove 2086, when the oil float stop 2087 is completely positioned in the bottom groove 2086, the oil outlet pipe 2082 is closed, when oil is discharged, oil can fall on the inclined wall of the bottom groove 2086 and slide to the inside of the liquid taking cup 1 along the inclined wall, so that the oil is buffered, and insulating oil can smoothly enter the inside of the liquid taking cup 1 to avoid splashing of the insulating oil.

The oil outlet control unit 210 comprises a longitudinal rod groove 2101 arranged in the scale plate 20816, the top end of the longitudinal rod groove 2101 penetrates through to the top end of the scale plate 20816, the bottom end of the longitudinal rod groove 2101 penetrates through to the lower part of the horizontal top wall of the bottom groove 2086, a rotary rod 2102 is rotatably arranged in the longitudinal rod groove 2101, a rotary handle 2103 is arranged at the top end of the rotary rod 2102, the bottom wall of the rotary handle 2103 is contacted with the top wall of the scale plate 20816, a limit plate 2104 is arranged at the bottom end of the rotary rod 2102, the top wall of the limit plate 2104 is contacted with the horizontal top wall of the bottom groove 2086, a bottom rod 2105 is arranged at the bottom end of the limit plate 2104, a side clamping block 2106 is arranged at the outer side of the bottom rod 2105, a clamping module 2107 is arranged on the oil float stop 2087, the diameter of the bottom rod 2105 is smaller than the diameter of the limit plate 2104, the clamping module 2107 is arranged below the bottom rod 2105, the clamping module 2107 comprises a top groove 21071 arranged on the horizontal top wall of the oil float stop 2087, the top groove 21071 has the same diameter as the limit plate 2104, the bottom end of the top slot 21071 is provided with a middle slot 21072, the diameter of the middle slot 21072 is the same as the diameter of the bottom rod 2105, the bottom end of the middle slot 21072 is provided with a bottom slot 21074, one side of the middle slot 21072 is provided with a side slot 21073, two ends of the side slot 21073 are respectively communicated with the top slot 21071 and the bottom slot 21074, the length of the side slot 21073 is the same as the length of the side clamping block 2106, the side slot 21073 is positioned below the side clamping block 2106, when the oil float stop 2087 is fixed with the positioning ring plug 2081, the side clamping block 2106 at one side of the bottom rod 2105 is clamped inside the bottom slot 21074 in the oil float stop 2087, when the oil float stop 2087 is required to be separated from the positioning ring plug 2081, the rotating rod 2102 is rotated, the side 2106 on the bottom rod 2105 is rotated to the position corresponding to the side slot 21073, the oil float stop 2087 is dropped under the action of gravity to be separated from the positioning ring plug 1, so that the oil float stop 2087 is convenient to separate from the positioning ring plug 2087, the liquid level is conveniently controlled.

The oil absorption control unit 209 comprises a rotary baffle sleeve 2091 arranged in the liquid storage cavity, the bottom of the rotary baffle sleeve 2091 is in an open arrangement, the outer wall of the rotary baffle sleeve 2091 is clung to the inner wall of the liquid storage cavity, the top end of the rotary baffle sleeve 2091 is movably connected with the piston rod 206, the inner wall of the rotary baffle sleeve 2091 is clung to the outer wall of the oil absorption piston 205, a communication groove 2092 is arranged on one side of the rotary baffle sleeve 2091 close to the oil absorption pipe 204, an arc-shaped sliding groove 2093 is arranged on the top end of the liquid taking pipe 201, an arc-shaped sliding plate 2094 is arranged on the top end of the rotary baffle sleeve 2091, the arc-shaped sliding plate 2094 is slidably arranged in the arc-shaped sliding groove 2093, two clamping grooves 2095 are formed in the inner wall of one side, far away from the piston rod 206, of the arc-shaped sliding groove 2093, transverse rod grooves 2096 are formed in the arc-shaped sliding plate 2094, the transverse rod grooves 2096 penetrate through one side, far away from the piston rod 206, of the arc-shaped sliding plate 2094, clamping rods 2098 are movably mounted in the transverse rod grooves 2096, the clamping rods 2098 are clamped in the clamping grooves 2095, guide grooves 2097 are symmetrically formed in two sides of the transverse rod grooves 2096, guide blocks 2099 are symmetrically mounted in two sides of the clamping grooves 2095, the guide blocks 2099 are slidably connected in the guide grooves 2097, a spring 2091 is installed on one side of the guide block 2099 far away from the clamping groove 2095, one end of the spring 2091 is fixedly connected with the inner wall of one side of the guide groove 2097 far away from the clamping groove 2095, a pressed block 2091 is installed on one side of the clamping rod 2098 far away from the clamping groove 2095, the pressed block 2091 is arranged to be in a triangle shape, a moving groove 2096 is formed in the top end of the transverse rod groove 2096, a balancing weight 20914 is movably installed in the moving groove 2096, a pressing block 20913 is installed at the bottom end of the balancing weight 20914, the bottom of the pressing block 20913 is in sliding connection with the top of the pressed block 2091, the bottom end of the extrusion block 20913 is obliquely arranged, the inclined wall of the extrusion block 20913 is in contact with the inclined outer wall of the pressure receiving block 2091, the top end of the balancing weight 20914 is provided with a push rod 20915, the top end of the push rod 20915 penetrates to the upper part of the arc-shaped sliding plate 2094, the top end of the push rod 20915 is provided with a pull handle 2091, when insulating oil is extracted from the oil tank, the rotary baffle sleeve 2091 is rotated to a position corresponding to the oil suction pipe 204 by the communication groove 2092, the oil float baffle 2087 seals the oil outlet pipe 2082, the oil suction pipe 204 is inserted into the oil tank, the oil suction piston 205 is pulled to suck the insulating oil into the liquid storage cavity, then, after the oil suction pipe 204 is closed by rotating the baffle sleeve 2091, insulating oil is led to enter the inside of the liquid suction cup 1 from the bottom end of the oil outlet pipe 2082, after the insulating oil with the required liquid level is obtained, the insulating oil is drained back into the oil tank from the oil suction pipe 204, so that the oil is prevented from being extracted from the oil tank for multiple times, the counterweight 20914 is convenient to extract the oil, the extrusion block 20913 generates pressure on the compression block 2091 under the action of gravity, the clamping rod 2098 is pushed to move towards the clamping groove 2095 and clamped into the clamping groove 2095, when the switching state of the oil suction pipe 204 needs to be adjusted by rotating the rotating baffle sleeve 2091, the pull rod 2096 is pulled upwards, the locking rod 2098 moves back under the action of the elastic force of the spring 2091, so that the locking rod 2098 and the locking groove 2095 are instantly separated from the locking connection, and the rotation adjustment of the rotation blocking sleeve 2091 is facilitated, and the oil suction pipe 204 is conveniently controlled.

Working principle: when in use, the oil float stop 2087 is positioned in the bottom groove 2086 below the positioning ring plug 2081, at this time, the bottom end of the oil outlet pipe 2082 is closed by the oil float stop 2087, and the bottom rod 2105 is inserted into the middle groove 21072, so that the side clamping block 2106 is clamped in the bottom groove 21074, thereby fixing the positioning ring plug 2081 and the bottom groove 2086, and simultaneously, the communicating groove 2092 on the rotary baffle sleeve 2091 is positioned in a state corresponding to the direction of the oil suction pipe 204, so that the oil suction pipe 204 is communicated with the inside of the liquid storage cavity;

The liquid taking pipe 201 is horizontally arranged, the oil suction pipe 204 is inserted into an oil tank filled with insulating oil, the pull plate 207 is pulled, the oil suction piston 205 moves, under the action of negative pressure, the insulating oil in the oil tank is sucked into the liquid storage cavity, after more insulating oil is sucked, the oil suction piston 205 is stopped being pulled, the liquid taking pipe 201 is reversely horizontally arranged, the oil suction pipe 204 is in an upward state, then the pull handle 2091 is pulled outwards, the extrusion block 20913 moves towards the inside of the moving groove 2091, the pressure of the extrusion block 20913 to the pressure receiving block 2091 disappears, the clamping rod 2098 moves back to the transverse rod groove 2096 under the action of the elastic force of the spring 2091 and is separated from the clamping groove 2095, then the arc-shaped sliding plate 2094 moves to the other end along the arc-shaped sliding groove 2093, the rotary retaining sleeve 2091 rotates, the communication groove 2092 is staggered with the oil suction pipe 204, the insulating oil is stored in the cavity at the moment, the liquid taking pipe 201 is rotated to a vertical state, the extrusion block 20913 moves towards the inside of the moving groove 2095, the weight 20914 moves towards the clamping rod 2095, and then moves towards the inside of the clamping rod 2095 under the action of the elastic force of the spring 2091, and the clamping rod 2095 moves towards the other end 2095, and is clamped by the clamping rod 2095 under the action of the elastic force of the spring 2090, and the clamping rod is clamped by the clamping rod, and then is fixedly connected to the other end 2095;

Then, the liquid taking pipe 201 is installed on the liquid taking cup 1, so that the buckles 203 on the two sides of the liquid taking pipe 201 are clamped on the cup edge of the liquid taking cup 1, the positioning ring plug 2081 is tightly attached to the inner wall of the liquid taking cup 1, the pull rod 20812 is rotated, after the pull rod 20812 is in threaded connection with the screw groove 20811 and rotates, the pull rod 20812 moves downwards to push the positioning ring plug 2081 to move downwards, the downward moving distance of the positioning ring plug 2081 can be read through the corresponding scales of the scale plate 20816 and the side plate 202, meanwhile, the height of the liquid taking cup 1 is fixed, so that the height between the bottom wall of the positioning ring plug 2081 and the inner bottom wall of the liquid taking cup 1 can be read, when the required liquid level height is reached, the pull rod 20812 is not continuously rotated, so that the positioning ring plug 2081 is fixed, and the bottom wall of the positioning ring plug 2081 is flush with the bottom wall of the oil float stop 2087;

After the installation, the rotating handle 2103 is rotated to rotate the side clamping block 2106 on the bottom rod 2105 to a position corresponding to the side groove 21073, at the moment, the side clamping block 2106 is separated from the bottom groove 21074, so that the oil float stop 2087 falls off under the action of self gravity, the positioning ring plug 2081 is separated from the oil float stop 2087, after the separation, the oil float stop 2087 does not close the bottom end of the oil outlet pipe 2082, at the moment, the oil suction piston 205 is pushed downwards, thereby pressing insulating oil to be introduced into the bottom end of the positioning ring plug 2081 from the oil outlet pipe 2082 and flow into the liquid taking cup 1 along the inclined wall of the annular groove 2085, after the insulating oil continuously enters the liquid taking cup 1, under the action of buoyancy, the oil float stop 2087 floats on the top of the insulating oil, and under the action of resistance of the oil float stop 2087, the insulating oil can smoothly enter the liquid taking cup 1, and the insulating oil is prevented from splashing;

With the continuous rise of the insulating oil level, the oil float stop 2087 is continuously raised under the action of buoyancy until the oil float stop 2087 enters into the bottom groove 2086, so as to seal the bottom end of the oil outlet pipe 2082 again, so as to stop the entering of insulating oil, meanwhile, the middle groove 21072 is sleeved outside the bottom rod 2105, so that the side clamping block 2106 enters into the bottom groove 21074 along the side groove 21073, after the rotating rod 2102 is rotated by a worker, the side clamping block 2106 is clamped into the bottom groove 21074 again, so that the positioning ring plug 2081 is clamped and fixed with the oil float stop 2087 again, then the liquid taking pipe 201 is taken out from the liquid taking cup 1, at this moment, the liquid level of the insulating oil inside the liquid taking cup 1 is at the required liquid level, then the liquid taking pipe 201 is transversely arranged, the rotating stop 2091 is readjusted to the position corresponding to the communicating groove 2092 and the oil sucking pipe 204, then the insulating oil inside the liquid taking pipe 201 cavity is discharged from the oil sucking pipe 204 back into the oil tank.

Embodiment two:

On the basis of embodiment one, consider in this embodiment that this device because fluid sampling to laboratory analysis needs a period of time, the granule in the oil appearance can subside constantly even layering during this period, influences the accuracy of inspection to the in-process that removes the oil appearance can appear that the device rocks the unrestrained of fluid that leads to, and the in-process that carries out flowing back to fluid can appear the jam condition, can not be according to the high corresponding control of flowing back speed of flowing back at the in-process that flowing back, lead to flowing back error and the lower condition of flowing back efficiency.

Specifically, the middle part of the positioning ring stopper 2081 is provided with an elastic air bag 20817, two liquid inlets 20818 are formed in the upper end of the elastic air bag 20817, the liquid inlets 20818 are mutually communicated with the lower end of an oil outlet pipe 2082, liquid outlets 20819 are formed in two sides of the lower end of the elastic air bag 20817, the liquid outlets 20819 are mutually communicated with a bottom groove 2086, the diameter of the liquid inlets 20818 is larger than that of the liquid outlets 20819, an electromagnetic valve is arranged in the first movable groove 2084, a pressure sensor is arranged in the elastic air bag 20817, and a displacement sensor is arranged at the top end of the second limiting head 2089.

In the process of liquid taking, the device is firstly transversely arranged, the oil suction pipe 204 is inserted into an oil tank filled with insulating oil, electromagnetic valves inside the two first movable grooves 2084 are simultaneously closed, the air tightness in the liquid taking pipe 201 is ensured, the pulling plate 207 is pulled to drive the oil suction piston 205 to move, negative pressure can be generated inside the liquid taking pipe 201, the insulating oil can enter the liquid taking pipe 201 through the oil suction pipe 204, after liquid taking is completed, the electromagnetic valves inside the two first movable grooves 2084 are continuously closed, meanwhile, the retaining sleeve 2091 is rotated, the communicating grooves 2092 are staggered with the oil suction pipe 204, the oil suction pipe 204 is sealed, the two electromagnetic valves are matched with the communicating grooves 2092, an airtight space is formed by the inner cavity of the liquid taking pipe 201, the insulating oil is filled inside at the moment, the device is moved under the action of atmospheric pressure, the pulling plate 207 can not automatically move, the insulating oil can not be prevented from falling or polluting in the moving process, and the waste of the insulating oil is reduced.

Before the oil extraction process, the buckles 203 on two sides are clamped on the side edges of the liquid taking cup 1, the upper end of the device can be supported on the upper end of the liquid taking cup 1, at the moment, the oil float stop 2087 and the bottom groove 2086 are mutually abutted, so that two through holes at the bottom of the bottom groove 2086 can be closed, the pull plate 207 is pressed downwards at the moment, the oil suction piston 205 is driven to move downwards, insulating oil in the liquid taking pipe 201 is pushed to flow downwards into the elastic air bag 20817, the elastic air bag 20817 begins to expand along with the increasing of oil, then the pull plate 207 is not pressed, the insulating oil entering the elastic air bag 20817 is sprayed upwards under the action of the self elasticity of the elastic air bag 20817, meanwhile, the pull plate 207 is pulled to reset upwards, the insulating oil standing inside the liquid taking pipe 201 can be accelerated to flow and evenly through the reciprocating pressing of the pull plate 207, on one hand, space can be provided for the flowing of the oil, on the other hand, power can be provided for the backflow of the oil, layering after the insulating oil is kept still is prevented, and the effect of the inspection is affected.

Because the precipitation of inside tiny particle or impurity can take place when the fluid is static, the collection is in the bottom of getting liquid pipe 201, after two solenoid valve open, get into the inside of oil pipe 2082 and cause the jam, in the time of carrying out the misce bene to the oil appearance under normal condition, push down arm-tie 207, fluid gets into the elasticity gasbag 20817 inside through oil pipe 2082, the liquid in elasticity gasbag 20817 increases gradually along with the continuous inflow of liquid this moment, the liquid pressure is grow gradually, pressure sensor can detect the pressure of recognizing along with the continuous pressure of arm-tie 207 increases gradually, and when no longer pressing down to arm-tie 207, the elasticity gasbag 20817 that is in the inflation state begins to make inside fluid flow back to get liquid pipe 201 inside through oil pipe 2082 under the effect of self elasticity, in the in-process that the fluid backward flow, because elasticity gasbag 17 inside reduces then the expansion volume also begins gradually, the numerical value that pressure sensor discerns gradually reduces, this state is the normal state that the fluid flows, then the misce oil volume that the circulation was accomplished through pressing down many times.

When a downward force is applied to the pull plate 207, the pressure sensor recognizes that the pressure inside the elastic gas bag 20817 increases very slowly, which indicates that the expansion variation of the elastic gas bag 20817 is very small, less oil enters the inside of the elastic gas bag 20817, the pressure inside the elastic gas bag 20817 still remains in a state of slow pressure increase after continuously increasing the downward force to the pull plate 207, when no downward force is applied to the pull plate 207, the pressure sensor detects that the pressure inside the elastic gas bag 20817 is in a state of slow decrease (the expansion of the elastic gas bag 20817 tends to be in a state of slow decrease), the oil backflow speed is relatively slow, which indicates that small particles are accumulated in the inside of the oil outlet pipe 2082 at this time, a state of blocking the oil outlet pipe 2082 is caused, at this time, the pull plate 207 should be controlled to actively and rapidly move upwards, a relatively severe negative pressure is generated in the inside of the liquid taking pipe 201, and meanwhile, the self elastic force of the elastic gas bag 20817 is matched, the oil inside of the elastic gas bag 20817 is rapidly moved upwards, the blocking area in the oil outlet pipe 2082 is impacted, then the pull plate 207 is continuously pressed downwards, if the pressure sensor recognizes that the pressure inside the elastic gas bag 20817 is rapidly decreases (the state of slow pressure, and the pressure is increased, and the pressure is relatively small, and the oil outlet pipe 2082 is blocked at this time, and the state is continuously.

Specifically, because the oil outlet pipe 2082 has two oil outlet pipes, the blockage of the oil outlet pipe 2082 at one side may occur, when the pressure sensor recognizes that the liquid inlet amount of the elastic air bag 20817 is small, the internal electromagnetic valves of the two first movable grooves 2084 can be respectively controlled at this time, the electromagnetic valves inside the first movable grooves 2084 close to one side of the oil suction pipe 204 are firstly controlled to be closed, then the pull plate 207 is pressed downwards to enable the oil inside the oil suction pipe 201 to enter the elastic air bag 20817 through the oil outlet pipe 2082 at the other side, then the electromagnetic valves inside the first movable grooves 2084 close to one side of the oil suction pipe 204 are opened, at the same time, the pull plate 207 is pulled upwards rapidly, negative pressure is generated inside the oil suction pipe 201, negative pressure suction is performed on the blocked part, at the same time, the oil inside the elastic air bag 20817 can be accelerated to flow back to the oil outlet pipe 2082 at the one side to realize the removal of the blockage inside the oil outlet pipe 2082, then according to the control logic, the electromagnetic valves inside the first movable grooves 2084 close to the oil suction pipe 2084 at the other side are opened, and the two comprehensive oil outlet pipes 2082 are correspondingly communicated.

And the intermittent compression of the pull plate 207 is matched with the intermittent contraction of the elastic gas bag 20817, so that on one hand, oil in the liquid taking pipe 201 can be uniformly mixed, on the other hand, the inside of the elastic gas bag 20817 and the inside of the oil outlet pipe 2082 can be wetted, when liquid is discharged, the wetted oil way is easier for enabling oil drops to flow out along with the solution, and the possibility of the oil drops staying in the pipeline is reduced, so that liquid discharge errors are reduced.

In the oil discharging process, the pull rod 20812 is rotated to realize the height adjustment of the positioning ring plug 2081, the inner side edge of the elastic air bag 20817 is located at one side of the position corresponding to the fixed rotating sleeve 20814, interference with the elastic air bag 20817 does not occur when the pull rod 20812 rotates, then the pull plate 207 is pressed downwards to enable the oil suction piston 205 to move downwards, insulating oil uniformly mixed in the liquid suction pipe 201 flows downwards, so that the oil suction piston 20817 enters the inside of the elastic air bag 20817, the rotary handle 2103 is rotated to release the constraint on the oil float stop 2087, the oil float stop 2087 starts to fall under the action of gravity to release the contact with the bottom groove 2086, at the moment, insulating oil in the elastic air bag 20817 starts to be discharged from the liquid outlet 20819, and the diameter of the liquid inlet 20818 is larger than that of the liquid outlet 20819, for example, the diameter of the liquid inlet 20818 is 1 cm, the diameter of the liquid outlet 20819 is 0.4 cm, accordingly pressure difference exists in the liquid discharging process all the time, the elastic air bag 20817 can expand all the time, after the liquid level reaches the position, the oil float stop 2087 starts to fall under the action of gravity, the action of the contact with the bottom groove 2086 is stopped, the liquid level is not required to be continuously observed, and the liquid level is not to be continuously discharged for a plurality of times, the situation is convenient, and the liquid level is not required to be continuously discharged, and the liquid level to be observed.

If the liquid draining speed is too high, the fluctuation state of the liquid level is larger when liquid draining occurs, so that the height of the oil float stop block 2087 is larger, the jump occurs, the liquid draining height is not corresponding to the set height after the set liquid level is not reached, the liquid draining speed is not corresponding to the set height, the efficiency of liquid distribution can be reduced if the liquid draining speed is too low, the moving distance of the oil float stop block 2087 can be identified through the displacement sensor arranged at the top end of the second limiting head 2089, the moving speed of the oil float stop block 2087 in unit time is synchronously measured and calculated, when the displacement sensor identifies that the height of the oil float stop block 2087 is in a lower state, the pressure sensor inside the elastic air bag 20817 identifies that the internal pressure of the elastic air bag 20817 is smaller, the speed of the two liquid outlet ports 20819 at the moment is lower, the liquid draining speed of the lower end of the elastic air bag 20817 at the moment is higher, the liquid level of the liquid level cup 1 can be gradually increased, the liquid draining speed of the liquid level in the liquid level can be gradually increased, the liquid draining speed of the liquid level can be greatly influenced by the liquid level can be greatly, the liquid draining speed can be greatly influenced by the liquid level of the liquid level can be rapidly flowing out of the liquid level can be greatly, the liquid can be effectively discharged by the liquid level can be greatly, and the liquid can be effectively discharged by the liquid can be effectively and effectively discharged by the liquid can be greatly.

Specifically, when the pull plate 207 is pressed downwards to accelerate the liquid inlet amount of the elastic air bag 20817, at this time, under the normal state, the larger the stress of the pull plate 207 is, the larger the liquid inlet amount of the elastic air bag 20817 is, the larger the expansion amount is, the higher the liquid pressure detected by the pressure sensor is, the liquid outlet speed of the liquid outlet 20819 at the lower end of the corresponding elastic air bag 20817 is also increased, the moving distance of the oil float stop 2087 identified by the displacement sensor is shorter, the moving speed in unit time is far lower than the set state, at this time, after the lower pressure is not applied to the pull plate 207, if the elastic air bag 20817 makes the internal liquid reflux under the action of self-elasticity, the upper end oil way of the elastic air bag 20817 is not blocked at this time, the accumulation of small particle impurities is caused at the upper ends of the two liquid outlets 20819 at this time, the liquid outlet 20819 is reduced, at this time, the liquid outlet capacity of the corresponding elastic air bag 20819 is also increased, the liquid inside the air bag is rapidly pulled upwards to the inside the liquid outlet 201 at this time, the liquid inside the air bag is rapidly flows back to the liquid outlet 2087, the liquid inside the set state is then pressed downwards, the liquid inside the air bag 20817 is increased, the liquid inside the flowing direction is greatly, the liquid inside the liquid flow speed is increased, the liquid inside the air bag is correspondingly, the liquid is blown out of the liquid outlet is correspondingly, the liquid outlet position is detected by the liquid outlet position, and the liquid particles is in the liquid state, and the device is corresponding state, and the state is detected, and the state is even state, and the state.

Along with the continuous rising of the oil float stop 2087, when the displacement sensor recognizes that the integral distance between the oil float stop 2087 and the positioning ring plug 2081 is smaller than one third, and meanwhile, when the pressure sensor recognizes that the pressure inside the elastic air bag 20817 is larger, if the liquid discharge speed is continuously kept faster, the inaccurate liquid discharge can be caused at the moment, the pressing force on the pull plate 207 should be reduced, meanwhile, the electromagnetic valve inside the first movable groove 2084 at one side is closed, the liquid inlet amount of oil liquid into the elastic air bag 20817 is reduced, the expansion amount of the corresponding elastic air bag 20817 is reduced, the pressure of the oil liquid inside is reduced, the downward discharge speed of the oil liquid is reduced, and the liquid level inside the liquid taking cup 1 tends to be in a stable state.

Along with the continuous rising of the oil float stop 2087, when the displacement sensor recognizes that the oil float stop 2087 is about to approach the positioning ring plug 2081, the electromagnetic valve in the first movable groove 2084 on the other side is controlled to be closed, at this time, as the two electromagnetic valves are simultaneously closed, the elastic air bag 20817 is still in an expanded state, at this time, extrusion discharge of residual oil in the interior can be realized by utilizing the expansion force of the elastic air bag 20817, the oil discharge speed at this time is slowest, the fluctuation amplitude of the oil liquid level can be effectively prevented, the oil float stop 2087 is slowly contacted with the positioning ring plug 2081, and the liquid discharge operation is completed.

In the cleaning process after oil discharge is completed, the two electromagnetic valves in the first movable groove 2084 are all closed, then the pull plate 207 is pulled firstly, the oil suction pipe 204 is inserted into the cleaning liquid, the cleaning liquid is sucked into the liquid taking pipe 201, then the communicating groove 2092 is closed, meanwhile, the two electromagnetic valves in the first movable groove 2084 are all opened, at the moment, the pull plate 207 is pressed in a reciprocating mode, the cleaning liquid enters the elastic air bag 20817, the elastic air bag 20817 begins to expand, then under the elastic force of the elastic air bag 20817, the cleaning liquid in the inner part is sprayed out in an accelerating mode, residual insulating oil in the two oil outlet pipes 2082 can be effectively washed, blockage caused by unclean cleaning of the oil outlet pipes 2082 and influence on a measuring result are prevented, the inner wall of the liquid taking pipe 201 can be washed, and the cleaning degree of the device after cleaning is guaranteed.

It should be noted that, in the process of sampling oil, through closing the internal electromagnetic valve of two first movable grooves 2084, the upward pulling of cooperation pulling plate 207, inhale oil through oil suction pipe 204, rotate baffle 2091 in the moving process, make the intercommunication disconnection between oil suction pipe 204 and the liquid taking pipe 201, under the cooperation of rotating baffle 2091 and two electromagnetic valves, can become airtight space with liquid taking pipe 201, prevent to take place the removal by oneself at the removal in-process pulling plate 207 after the sample, afterwards before flowing back, can mix the fluid after standing through reciprocating pressing pulling plate 207 cooperation elastic air bag 20817, and according to the pressure change condition (namely the corresponding expansion state change in the pressing process) inside elastic air bag 20817 and the corresponding relation of the pressing force of pulling plate 207, and the state condition that elastic air bag 20817 resets by oneself, can obtain the condition that whether oil outlet 2082 takes place the jam under the current state, if the pressure change does not correspond with the pressing degree, corresponding control pulling plate 207 carries out quick reciprocating movement, rely on inside negative pressure and carry out the removal of jam position, can also control the oil through reciprocating motion of two movable grooves 2084 in advance, can realize the reduction of the error of the reciprocating motion of the oil, can realize the reciprocating motion of the elastic air bag 207, and can realize the fluid release of the elastic air bag 207 through the reciprocating motion of the corresponding to the first movable grooves 2084.

In the process of draining oil, the expansion state of the elastic air bag 20817 and whether a blocking condition occurs are detected by means of the cooperation of the pressure sensor and the displacement sensor, the flow speed of the oil is higher when the expansion amount is larger under normal conditions, the moving distance and the moving speed of the oil float stop 2087 are correspondingly detected through the displacement sensor, if the expansion degree of the elastic air bag 20817 is large and the rising speed of the oil float stop 2087 is slow, the condition that precipitation blocking occurs at the position of the bottom liquid outlet 20819 of the elastic air bag 20817 is indicated, at the moment, the pulling plate 207 is controlled to reciprocate rapidly again, the impact blocking of the blocking area is achieved, then the draining operation is continued, and the moving speed of the oil float stop 2087 is monitored through the displacement sensor, so that the blocking effect verification of the elastic air bag 20817 is achieved.

In the final liquid draining process, the height and the moving speed of the oil float stop block 2087 are identified through the displacement sensor, the liquid draining speed is identified through the pressure sensor in the elastic air bag 20817, different liquid draining speeds are adjusted according to different heights, the liquid draining speed is accelerated in the initial liquid draining stage when the liquid level of the discharged oil is low, when the oil float stop block 2087 is identified to be close to the positioning ring plug 2081 in the middle and later liquid draining stage, the electromagnetic valve in the first movable groove 2084 at one side is controlled to be closed, the pressure applied to the pull plate 207 is reduced, the liquid draining speed is reduced, at the end of liquid draining, the two electromagnetic valves are completely closed at the end of liquid draining, the final slow liquid supplementing operation is realized by virtue of the expansion state of the elastic air bag 20817, and thus the dynamic adjustment in the whole liquid draining process is realized, and the liquid draining error is further reduced while the whole liquid draining efficiency is accelerated.

Embodiment III:

a liquid taking method comprises the following steps:

s1: by controlling the communication condition of the oil suction pipe 204 and the liquid taking pipe 201, the oil suction pipe 204 is extended into the oil, and the oil suction piston 205 is pulled to suck the insulating oil into the liquid storage cavity, so that the extraction of the oil sample is completed;

S2: the liquid taking pipe 201 is arranged on the liquid taking cup 1, the positioning ring plug 2081 is pushed to move downwards, and the positioning ring plug 2081 is pushed to the position where the bottom wall of the positioning ring plug 2081 is positioned at the required liquid level height by matching with the scale plate 20816;

S3: the pulling plate 207 is pressed back and forth to enable oil to enter the elastic gas bag 20817 for uniform mixing, whether the oil way is blocked or not is judged according to the change of the numerical value of the pressure sensor, and the blocking position is cleared through the cooperation of the pulling plate 207 and the elastic gas bag 20817;

S4: the rotating rod 2102 is controlled to rotate so that the oil float stop 2087 is separated from the positioning ring plug 2081, insulating oil enters the liquid taking cup 1 from the bottom end of the elastic air bag 20817, the position of the oil float stop 2087 is identified through the displacement sensor, the liquid inlet amount of the elastic air bag 20817 is correspondingly regulated, and the bottom end of the elastic air bag 20817 is closed under the action of buoyancy, so that liquid inlet is completed.

Working principle: in the process of sampling oil, through closing the inside electromagnetic valve of two first movable tanks 2084, the upward pull of cooperation arm-tie 207 is inhaled oil through inhaling oil pipe 204, rotate baffle 2091 in the removal process and make the intercommunication disconnection between oil pipe 204 and the liquid taking pipe 201, under the cooperation of rotating baffle 2091 and two electromagnetic valve, can become airtight space with liquid taking pipe 201, prevent to take place the removal by oneself at the removal in-process arm-tie 207 after the sample, then before the flowing back, can mix the fluid after standing through the cooperation of reciprocal press arm-tie 207 elastic air bag 20817, and according to the pressure change condition (namely the corresponding expansion state change in the pressing process) of elastic air bag 20817 and the state condition that elastic air bag 20817 reset by oneself, can obtain the condition that whether oil outlet 2082 takes place the jam under the current state, if the pressure change does not correspond with the degree of pressing, corresponding control arm-tie 207 carries out quick reciprocating movement, the inside negative pressure and the impact to stop up position, simultaneously can control the oil drop on the inside of the movable arm-tie 20817, can realize the inside of the movable oil channel 20817 through the reciprocal press the corresponding expansion state change of elastic air bag 20817, can realize the fluid release error of the inside the movable pipe 2082, can realize the fluid release of the reciprocal valve, can realize the fluid release by the reciprocal movement of the inside the movable pipe 2084, can be realized, the device is opened and closed.

In the process of draining oil, the expansion state of the elastic air bag 20817 and whether a blocking condition occurs are detected by means of the cooperation of the pressure sensor and the displacement sensor, the flow speed of the oil is higher when the expansion amount is larger under normal conditions, the moving distance and the moving speed of the oil float stop 2087 are correspondingly detected through the displacement sensor, if the expansion degree of the elastic air bag 20817 is large and the rising speed of the oil float stop 2087 is slow, the condition that precipitation blocking occurs at the position of the bottom liquid outlet 20819 of the elastic air bag 20817 is indicated, at the moment, the pulling plate 207 is controlled to reciprocate rapidly again, the impact blocking of the blocking area is achieved, then the draining operation is continued, and the moving speed of the oil float stop 2087 is monitored through the displacement sensor, so that the blocking effect verification of the elastic air bag 20817 is achieved.

In the final liquid draining process, the height and the moving speed of the oil float stop block 2087 are identified through the displacement sensor, the liquid draining speed is identified through the pressure sensor in the elastic air bag 20817, different liquid draining speeds are adjusted according to different heights, the liquid draining speed is accelerated in the initial liquid draining stage when the liquid level of the discharged oil is low, when the oil float stop block 2087 is identified to be close to the positioning ring plug 2081 in the middle and later liquid draining stage, the electromagnetic valve in the first movable groove 2084 at one side is controlled to be closed, the pressure applied to the pull plate 207 is reduced, the liquid draining speed is reduced, at the end of liquid draining, the two electromagnetic valves are completely closed at the end of liquid draining, the final slow liquid supplementing operation is realized by virtue of the expansion state of the elastic air bag 20817, and thus the dynamic adjustment in the whole liquid draining process is realized, and the liquid draining error is further reduced while the whole liquid draining efficiency is accelerated.

Claims (5)

1. Insulating oil liquid taking device with liquid level control, including getting liquid cup, its characterized in that: an insulating oil liquid taking mechanism is arranged above the liquid taking cup;

The insulating oil liquid taking mechanism comprises a liquid taking pipe, a liquid storage cavity is formed in the liquid taking pipe, an oil suction pipe is arranged on one side of the liquid taking pipe, a liquid level control unit is arranged at the bottom end of the liquid taking pipe, and an oil suction control unit is arranged in the liquid storage cavity;

the liquid level control unit comprises a positioning ring plug arranged below the liquid taking pipe, an oil float stop block is arranged below the positioning ring plug, a bottom groove is formed in the bottom end of the positioning ring plug, an elastic air bag is arranged in the middle of the positioning ring plug, an oil outlet pipe is symmetrically arranged on two sides between the top end of the positioning ring plug and the bottom end of the liquid taking pipe, two liquid inlets are formed in the upper end of the elastic air bag, the two liquid inlets are respectively communicated with the lower end of the oil outlet pipe, liquid outlets are formed in two sides of the lower end of the elastic air bag, the liquid outlets are communicated with the bottom groove, the diameter of the liquid inlets is larger than that of the liquid outlets, a first movable groove is symmetrically formed in the liquid taking pipe, an electromagnetic valve is arranged in the first movable groove, a pressure sensor is arranged in the elastic air bag, a second limiting head is arranged at the upper end of the oil float stop block, and a displacement sensor is arranged at the top end of the second limiting head;

The inner side of the positioning ring plug is provided with an annular groove, the diameter of the annular groove is larger than the outer diameter of the liquid taking pipe, the bottom groove and the oil float stop block are in a round table shape, the oil float stop block is matched with the bottom groove, the oil outlet pipe is in an L-shaped structure, the vertical section of the oil outlet pipe is positioned in the first movable groove, the top end of the first movable groove is communicated with the inside of the liquid storage cavity, the top end of the oil outlet pipe is provided with a first limiting head, the first limiting head is arranged in the first movable groove, the outer wall of the first limiting head is mutually abutted against the inner wall of the first movable groove, the top end of the oil float stop block is provided with a top rod, the top end of the top rod is mutually connected with a second limiting head, the second limiting head is slidably arranged in the second movable groove, and the second movable groove is arranged at the bottom end of the liquid taking pipe;

the two sides of the liquid taking pipe are symmetrically provided with side plates, the top walls of the two side plates are flush with the cup edge of the liquid taking cup, one side plate is provided with a screw groove, the inner thread of the screw groove is connected with a pull rod, the top end of the pull rod is provided with a rotating handle, and the bottom end of the pull rod is provided with a limiting rotating block;

The top end of the positioning ring plug is fixedly provided with a fixed rotating sleeve, the limiting rotating block is rotatably arranged in the fixed rotating sleeve, the other side plate is provided with a plate groove, the inside of the plate groove is slidably provided with a scale plate, the bottom end of the scale plate is fixedly arranged on the top wall of the positioning ring plug, and the inside of the scale plate is provided with an oil outlet control unit;

The oil outlet control unit comprises a longitudinal rod groove which is arranged in the scale plate, the top end of the longitudinal rod groove penetrates through the top end of the scale plate, and the bottom end of the longitudinal rod groove penetrates through the lower part of the horizontal top wall of the bottom groove;

a rotating rod is rotatably arranged in the longitudinal rod groove, a rotating handle is arranged at the top end of the rotating rod, the bottom wall of the rotating handle is in contact with the top wall of the scale plate, a limiting plate is arranged at the bottom end of the rotating rod, and the top wall of the limiting plate is in contact with the horizontal top wall of the bottom groove;

The bottom rod is arranged at the bottom end of the limiting plate, the side clamping block is arranged at the outer side of the bottom rod, the diameter of the bottom rod is smaller than that of the limiting plate, the oil suction pipe is communicated with the bottom of the liquid storage cavity, the oil suction piston is movably arranged in the liquid storage cavity, the piston rod is arranged at the top end of the oil suction piston, the top end of the piston rod penetrates to the upper side of the liquid taking pipe, and the pull plate is arranged at the top end of the piston rod;

The oil float stop block is provided with a clamping module, the clamping module is positioned below the bottom rod, the clamping module comprises a top groove which is formed in the horizontal top wall of the oil float stop block, the diameter of the top groove is the same as that of the limiting plate, the bottom end of the top groove is provided with a middle groove, the diameter of the middle groove is the same as that of the bottom rod, the bottom end of the middle groove is provided with a bottom groove, one side of the middle groove is provided with a side groove, two ends of the side groove are respectively communicated with the top groove and the bottom groove, the length of the side groove is the same as that of the side clamping block, and the side groove is positioned below the side clamping block;

The side plate is far away from the one end of getting the liquid pipe is equipped with telescopic buckle, the buckle card is in get on the cup edge of liquid cup.

2. The insulating oil liquid extraction device with liquid level control according to claim 1, wherein: the oil absorption control unit is including installing the inside rotation fender cover of stock solution chamber, the bottom of rotating fender cover is open setting, rotate the outer wall of fender cover with the inner wall in stock solution chamber is hugged closely, rotate the top of fender cover with piston rod swing joint, rotate the inner wall of fender cover with the outer wall of oil absorption piston is hugged closely, it is close to rotate fender cover one side of inhaling oil pipe has seted up the intercommunication groove, the arc spout has been seted up on the top of getting the liquid pipe, the arc slide is installed on the top of rotating fender cover, arc slide slidable mounting is in the inside of arc spout.

3. The insulating oil liquid extraction device with liquid level control according to claim 2, wherein: the arc spout is kept away from offer two joint grooves on the one side inner wall of piston rod, the horizontal pole groove has been seted up to the inside of arc slide, horizontal pole groove runs through to the arc slide is kept away from one side of piston rod, the inside movable mounting in horizontal pole groove has the joint pole, the joint pole joint in one of them the inside in joint groove, the guide way has been seted up to the bilateral symmetry in horizontal pole groove, the guide block is installed to the symmetry on the joint pole, guide block sliding connection is in the inside in guide way, the guide block is kept away from one side of joint groove installs the spring, the one end of spring with the guide way is kept away from one side inner wall fixed connection in joint groove.

4. A device for extracting insulating oil with liquid level control as defined in claim 3, wherein: the clamping rod is far away from one side of the clamping groove is provided with a pressed block, the pressed block is arranged into a triangular shape, the top of the transverse rod groove is provided with a movable groove, the inside of the movable groove is movably provided with a balancing weight, the bottom of the balancing weight is provided with a pressing block, the bottom of the pressing block is in sliding connection with the top of the pressed block, the top of the balancing weight is provided with a top rod, the top of the top rod penetrates through the top of the arc-shaped sliding plate, and the top of the top rod is provided with a pull handle.

5. A liquid extraction method for realizing liquid extraction adjustment by using the insulating oil liquid extraction device with liquid level control as claimed in claim 1, characterized by comprising the following steps:

S1: the oil suction pipe is extended into the oil by controlling the communication condition of the oil suction pipe and the liquid taking pipe, and the oil suction piston is pulled to suck insulating oil into the liquid storage cavity, so that the extraction of an oil sample is completed;

S2: the liquid taking pipe is arranged on the liquid taking cup, the positioning ring plug is pushed to move downwards, and the positioning ring plug is pushed to the position, with the cooperation of the scale plate, of the bottom wall of the positioning ring plug to be positioned at the position of the required liquid level height;

S3: the pulling plate is pressed back and forth to enable oil to enter the elastic air bag to be mixed evenly, whether the oil way is blocked or not is judged according to the change of the numerical value of the pressure sensor, and the blocking position is cleared through the cooperation of the pulling plate and the elastic air bag;

S4: the rotating rod is controlled to rotate so that the oil float stop block is separated from the positioning ring plug, insulating oil enters the liquid taking cup from the bottom end of the elastic air bag, the position of the oil float stop block is identified through the displacement sensor, the liquid inlet amount of the elastic air bag is correspondingly regulated, and the bottom end of the elastic air bag is closed under the action of buoyancy, so that liquid inlet is completed.