Transformer insulating material aging sampling equipment

Abstract

The invention discloses transformer insulating material aging sampling equipment, relates to the technical field of sampling, and aims to solve the problems that when insulating oil in an oil-immersed transformer is detected, the insulating oil is generally collected and sampled in an extraction mode, but in the extraction process, air is sucked in along with the insulating oil, so that the collection and sampling precision is reduced, and the sampling precision is poor. Therefore, through cooperation of the floating block and the sealing disc, air existing in the metering cylinder is exhausted, a worker can extract insulating oil with the same volume more accurately, meanwhile, when the sealing disc exhausts air, when the force of the worker pushing the pull rod is too large, and the internal air exhausting speed is too high, the sealing disc bears larger force, the sealing disc drives the sealing block to move upwards through the connecting rod, and the sealing block is driven to move upwards through the connecting rod. And the exhaust funnel is closed, so that the insulating oil is prevented from being exhausted from the exhaust funnel due to over-high air exhaust speed in the exhaust process.

Description

Technical Field

[0001] The invention relates to the technical field of sampling, in particular to a transformer insulation material aging sampling device. Background Art

[0002] At present, the transformer is an electrical device that uses the principle of electromagnetic induction to change the AC voltage. It is mainly composed of an iron core and a winding. The operation of the transformer is based on the law of electromagnetic induction. When the AC current passes through the primary winding of the transformer, an alternating magnetic field will be generated in the iron core. This alternating magnetic field will pass through the secondary winding, thereby inducing an electromotive force in the secondary winding. According to the law of electromagnetic induction, the magnitude of the induced electromotive force is proportional to the number of turns of the winding. If the number of turns of the secondary winding is more than that of the primary winding, then the output voltage will be higher than the input voltage. This is a step-up transformer; conversely, if the number of turns of the secondary winding is less than that of the primary winding, the output voltage will be lower than the input voltage. This is a step-down transformer. The oil-immersed transformer is a transformer that uses insulating oil as the insulating material. The insulating oil plays an important role in the oil-immersed transformer, including insulation and cooling. When the transformer is running, the winding and other components will generate heat, which will increase the temperature of the insulating oil. Due to the principle of thermal expansion and contraction and the convection formed by the temperature difference, the insulating oil will circulate inside the transformer; When detecting the insulating oil in an oil-immersed transformer, the insulating oil is usually sampled by extraction. However, during the extraction process, air is drawn in along with the insulating oil, which reduces the accuracy of the sampling. Summary of the invention

[0003] To achieve the above objectives, the present invention is implemented through the following technical solutions: A transformer insulation material aging sampling device, comprising: A sampling cylinder, which is used to measure the amount of insulating oil extracted, and a rubber plug is slidably mounted on the inner wall of the sampling cylinder, and a pull rod is fixedly mounted on the outer side of the rubber plug; A connecting mechanism, which is used to connect the oil outlet of the transformer and control the communication between the oil outlet of the transformer and the sampling cylinder, and the connecting mechanism is installed at one end of the sampling cylinder; A material guiding mechanism, which is used to guide the insulating oil in the sampling barrel to the storage container, and the material guiding mechanism is installed at one end of the bottom of the sampling barrel close to the connecting mechanism; Wherein, the sampling cylinder comprises a metering cylinder, a threaded ring is fixedly installed at one end of the metering cylinder close to the connecting mechanism, the metering cylinder is threadedly connected to the connecting mechanism through the threaded ring, the material guiding mechanism is installed on the side of the bottom of the metering cylinder close to the connecting mechanism, and an exhaust cylinder is fixedly installed on the side of the top of the metering cylinder close to the connecting mechanism, the exhaust cylinder is communicated with the metering cylinder, and an air groove is opened on the inner wall of the exhaust cylinder, and the air groove is a conical groove, a connecting rod is installed on the inner wall of the exhaust cylinder, a sealing disk is fixedly installed on the bottom of the connecting rod, and there is a gap between the connecting rod and the inner wall of the exhaust cylinder, a sealing block is fixedly installed on the bottom of the outer side of the connecting rod, and the connecting A float is fixedly installed at the bottom end of the rod. Through the cooperation of the float and the sealing disk, the air in the metering cylinder is discharged, so that the worker can more accurately extract the corresponding volume of insulating oil. At the same time, when exhausting through the sealing disk, when the worker pushes the pull rod with too much force and the internal air is discharged too quickly, the sealing disk is subjected to a greater force, so that the sealing disk drives the seal block to move upward through the connecting rod to close the exhaust cylinder to prevent the air from being discharged too quickly during the exhaust process, causing the insulating oil to be discharged from the exhaust cylinder. The rubber plug is slidably installed on the inner wall of the metering cylinder, and the rubber plug and the metering cylinder are tightly fitted, and the pull rod is fixedly installed at the center position of the rubber plug away from the connecting mechanism.

[0004] Preferably, the connecting mechanism comprises a threaded barrel, the outer side of the threaded barrel is threadedly connected to the inner wall of the threaded ring, and a fixing ring is fixedly installed on the end of the threaded barrel away from the threaded ring, a rubber gasket is clamped between the fixing ring and the threaded barrel, an inner groove disk is fixedly installed on the inner wall of the fixing ring, an outer cover barrel is fixedly installed on the outer side of the fixing ring, a hole cover is fixedly installed on the side of the inner wall of the outer cover barrel close to the fixing ring, filter holes are evenly opened on the outer side of the hole cover, and the center position of the hole cover protrudes toward the side away from the inner groove disk, and an outer groove is fixedly installed on the inner wall of the outer cover barrel The outer groove ring is provided with an arcuate annular groove on one side close to the inner groove disk. Through the cooperation between the protrusion of the hole cover and the outer groove ring, when filtering the insulating oil introduced into the metering cylinder, the impurities blocked on the outer side of the hole cover are driven by the flow of the insulating oil to impact to the outer side of the hole cover, and in the process of impact, the impurities are driven into the arcuate annular groove, so that the filtered impurities are accumulated in the annular groove to avoid clogging the hole cover, and the outer groove ring is located on the outer side of the hole cover, and a fixed groove disk is fixedly installed on one end of the inner wall of the outer cover cylinder away from the threaded ring, and empty grooves are evenly opened on the outer side of the fixed groove disk.

[0005] Preferably, a sleeve is slidably mounted on the inner wall of the outer cover tube, a spring is fixedly mounted between the sleeve and the fixed groove disk, a retaining cylinder is fixedly mounted on the side of the fixed groove disk close to the sleeve, and the retaining cylinder and the sleeve are slidably fitted, the retaining cylinder is located outside the empty groove of the fixed groove disk, an oil inlet hole is opened at the center position of the outer side of the sleeve, and the diameter of the oil inlet hole is smaller as it is closer to the fixed groove disk, and a stopper is slidably fitted at the oil inlet hole of the sleeve, through the cooperation of the stopper and the spring, only when the worker squeezes the equipment toward the oil outlet position, the spring The position between the sleeve and the stopper is changed by deformation, and the gap between the stopper and the oil inlet hole of the sleeve is opened, so that the worker can extract the insulating oil from the transformer. At the same time, the extraction is stopped when there is no squeezing. By extracting the insulating oil at intervals, the insulating oil flowing inside the transformer can be collected evenly, avoiding errors in the detection results due to the collection of insulating oil in a certain area. The side of the stopper close to the fixed groove plate is fixedly installed at the center position of the outer side of the fixed groove plate through a rod, and a rubber sleeve is fixedly installed at the oil inlet hole of the sleeve.

[0006] Preferably, the material guiding mechanism comprises a guide cylinder, the top of the outer side of the guide cylinder is fixedly connected to the inner wall of the metering cylinder, and a gasket is fixedly installed on the top of the inner wall of the guide cylinder, the inner wall of the gasket is slidably adapted with a sliding plate, a limiting flow block is fixedly installed on the bottom of the sliding plate, there is a gap between the limiting flow block and the inner wall of the guide cylinder, and a sliding column is fixedly installed at the center position of the bottom of the limiting flow block, a sliding hole disk is fixedly installed on the bottom of the inner wall of the guide cylinder, leakage holes are evenly opened on the top of the sliding hole disk, and the inner wall of the sliding hole disk is slidably adapted with the outer side of the sliding column, and the sliding hole An elastic cover is fixedly installed between the disk and the current limiting block. Through the cooperation between the elastic cover and the current limiting block, when the insulating oil is discharged, the elastic deformation of the elastic cover allows the sliding column to slide down, open the gap between the sliding disk and the gasket, and discharge the insulating oil. At the same time, during the discharge process, the flow rate of the discharged insulating oil is reduced through the flow limiting of the current limiting block, avoiding the insulating oil splashing due to excessive extrusion flow rate during the discharge and collection process. The bottom end of the guide cylinder is detachably installed with a cylinder cover, and the bottom end of the slide column is fixedly installed with a chassis, and the bottom of the chassis is in contact with the center position of the top of the cylinder cover.

[0007] The present invention provides a transformer insulation material aging sampling device, which has the following beneficial effects: 1. The transformer insulation material aging sampling equipment, through the cooperation of the floating block and the sealing disk, can discharge the air in the metering cylinder, so that the workers can extract the corresponding volume of insulating oil more accurately. At the same time, when the sealing disk is venting, when the worker pushes the pull rod too hard and the internal air is discharged too fast, the sealing disk is subjected to a greater force, so that the sealing disk drives the sealing block to move up through the connecting rod, closing the exhaust cylinder, preventing the air from being discharged too fast during the exhaust process, causing the insulating oil to be discharged from the exhaust cylinder.

[0008] 2. The transformer insulation material aging sampling device, through the cooperation between the protrusion of the hole cover and the outer groove ring, when filtering the insulating oil introduced into the metering cylinder, the impurities blocked on the outside of the hole cover are driven by the flow of the insulating oil and impact to the outside of the hole cover, and in the process of impact, the impurities are driven into the arc-shaped ring groove, so that the filtered impurities are accumulated in the ring groove to avoid clogging the hole cover.

[0009] 3. The transformer insulation material aging sampling equipment cooperates with the block and the spring. Only when the worker squeezes the equipment toward the oil outlet, the spring deforms, causing the position between the sleeve and the block to change, and opening the gap between the block and the oil inlet hole of the sleeve, can the worker extract the insulating oil from the transformer. At the same time, when there is no squeezing, the extraction is stopped. By extracting the insulating oil at intervals, the insulating oil flowing inside the transformer can be evenly collected, avoiding errors in the test results due to the collection of insulating oil in a certain area.

[0010] Fourth, the transformer insulation material aging sampling equipment, through the cooperation between the elastic cover and the current limiting block, when the insulating oil is discharged, the elastic deformation of the elastic cover allows the sliding column to slide down, open the gap between the sliding plate and the gasket ring, and discharge the insulating oil. At the same time, during the discharge process, the flow rate of the discharged insulating oil is reduced through the current limiting of the current limiting block, avoiding the insulating oil splashing due to excessive extrusion flow rate during the discharge and collection process.

[0011] 5. The transformer insulation material aging sampling equipment passed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the external structure of a transformer insulation material aging sampling device according to the present invention; Figure 2 This is a structural dissection diagram of a transformer insulation material aging sampling device according to the present invention; Figure 3 It is a schematic diagram of the structure of the connecting mechanism of the present invention; Figure 4 It is a structural anatomical diagram of the connection mechanism of the present invention; Figure 5 It is a partial structural anatomical diagram of the connection mechanism of the present invention; Figure 6 This is a structural anatomical diagram of the sampling tube of the present invention; Figure 7 It is a side view of the structure of the sampling tube of the present invention; Figure 8 It is a dissected diagram of the position structure of the sampling tube and the material guiding mechanism of the present invention; Fig. 9 It is a structural anatomical diagram of the material guiding mechanism of the present invention.

[0013] In the figure: 1, pull rod; 2, sampling tube; 3, connecting mechanism; 4, material guiding mechanism; 5, rubber plug; 21, metering tube; 22, threaded ring; 23, exhaust tube; 24, connecting rod; 25, floating block; 26, sealing block; 27, sealing disk; 301, threaded tube; 302, inner groove disk; 303, sleeve; 304, outer cover tube; 305, hole cover; 306, outer groove ring; 307, rubber gasket; 308, fixing ring; 309, fixed groove disk; 310, stopper tube; 311, spring; 312, block; 313, rubber sleeve; 41, guide tube; 42, sliding disk; 43, tube cover; 44, gasket; 45, current limiting block; 46, sliding column; 47, chassis; 48, elastic cover; 49, sliding hole disk. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0015] The first embodiment, as Figure 1 to Figure 2 and Figure 6 to Figure 7 As shown, the present invention provides a technical solution: a transformer insulation material aging sampling device, comprising: A sampling tube 2, which is used to measure the amount of insulating oil extracted, and a rubber plug 5 is slidably mounted on the inner wall of the sampling tube 2, and a pull rod 1 is fixedly mounted on the outer side of the rubber plug 5; A connecting mechanism 3, which is used to connect the transformer oil outlet and control the communication between the transformer oil outlet and the sampling cylinder 2, and the connecting mechanism 3 is installed at one end of the sampling cylinder 2; A material guiding mechanism 4, which is used to guide the insulating oil in the sampling tube 2 to the storage container, and the material guiding mechanism 4 is installed at one end of the bottom of the sampling tube 2 close to the connecting mechanism 3; Among them, the sampling cylinder 2 includes a metering cylinder 21, and a threaded ring 22 is fixedly installed at one end of the metering cylinder 21 close to the connecting mechanism 3. The metering cylinder 21 is threadedly connected to the connecting mechanism 3 through the threaded ring 22. The material guiding mechanism 4 is installed on the side of the bottom of the metering cylinder 21 close to the connecting mechanism 3. The insulating oil enters the metering cylinder 21 through the connecting mechanism 3. After extracting a proper amount of insulating oil each time, the worker stops squeezing to close the path between the oil outlet and the metering cylinder 21 of the connecting mechanism 3, and an exhaust cylinder 23 is fixedly installed on the side of the top of the metering cylinder 21 close to the connecting mechanism 3. The exhaust cylinder 23 is connected to the metering cylinder 21, and an air groove is opened on the inner wall of the exhaust cylinder 23, and the air groove is a conical groove. The worker pushes the pull rod 1 forward to make the rubber plug 5 squeeze the insulating oil in the metering cylinder 21, and in the process of squeezing, the air in the metering cylinder 21 is squeezed out during the squeezing process. During the process, it flows upward and is guided upward through the gap between the exhaust pipe 23 and the sealing block 26. The air pressure generated by the extrusion pushes the sealing disk 27 to open the gap between the exhaust pipe 23. A connecting rod 24 is installed on the inner wall of the exhaust pipe 23, and a sealing disk 27 is fixedly installed on the bottom of the connecting rod 24. There is a gap between the connecting rod 24 and the inner wall of the exhaust pipe 23. A sealing block 26 is fixedly installed on the bottom of the outer side of the connecting rod 24, and a floating block 25 is fixedly installed on the bottom end of the connecting rod 24. The rubber plug 5 is slidably installed on the inner wall of the metering cylinder 21. After the air is discharged, the insulating oil contacts the floating block 25, so that the floating block 25 drives the connecting rod 24 and the sealing block 26 to move upward under the buoyancy, so that the sealing block 26 blocks the exhaust pipe 23, and the rubber plug 5 is tightly fitted to the metering cylinder 21, and the pull rod 1 is fixedly installed at the center position of the rubber plug 5 away from the side of the connecting mechanism 3.

[0016] The second embodiment is based on the first embodiment. Figures 3 to 5 As shown, the connecting mechanism 3 includes a threaded barrel 301, the outer side of the threaded barrel 301 is threadedly connected to the inner wall of the threaded ring 22, and a fixing ring 308 is fixedly installed at one end of the threaded barrel 301 away from the threaded ring 22, a rubber gasket 307 is clamped between the fixing ring 308 and the threaded barrel 301, an inner groove disk 302 is fixedly installed on the inner wall of the fixing ring 308, an outer cover barrel 304 is fixedly installed on the outer side of the fixing ring 308, and a hole cover 305 is fixedly installed on the side of the inner wall of the outer cover barrel 304 close to the fixing ring 308, and the outer side of the hole cover 305 is evenly provided with filter holes, and the center position of the hole cover 305 is oriented to the inner wall of the fixing ring 308. The side away from the inner groove disk 302 is convex, and the inner wall of the outer cover tube 304 is fixedly installed with an outer groove ring 306. The outer groove ring 306 is provided with an arc-shaped annular groove on the side close to the inner groove disk 302. When passing through the hole cover 305, it is filtered through the filter hole. The blocked debris is driven by the flowing insulating oil and moves outward along the shape of the hole cover 305, enters the arc-shaped annular groove of the outer groove ring 306 and accumulates. The outer groove ring 306 is located on the outside of the hole cover 305. A fixed groove disk 309 is fixedly installed on the end of the inner wall of the outer cover tube 304 away from the threaded ring 22, and empty grooves are evenly provided on the outside of the fixed groove disk 309.

[0017] A sleeve 303 is slidably installed on the inner wall of the outer cover tube 304, and a spring 311 is fixedly installed between the sleeve 303 and the fixed groove disk 309. A stopper cylinder 310 is fixedly installed on the side of the fixed groove disk 309 close to the sleeve 303, and the stopper cylinder 310 and the sleeve 303 are slidably adapted. The stopper cylinder 310 is located outside the empty groove of the fixed groove disk 309, and an oil inlet hole is opened at the center of the outer side of the sleeve 303. When sampling, the threaded cylinder 301 drives the fixing ring 308 to squeeze the outer cover tube 304, so that the outer cover tube 304 drives the fixed groove disk 309 to squeeze the spring 311. When the sleeve 303 is fixed to the oil outlet, the spring 311 is deformed, so that the sleeve 303 slides toward the inside of the outer cover tube 304, so that the stopper 312 and the sleeve 303 are pressed together. A gap is opened between the oil inlet holes to allow insulating oil to enter through the gap and pass through the fixed groove plate 309, the hole cover 305 and the inner groove plate 302 in sequence to reach the sampling tube 2. The closer the oil inlet hole is to the fixed groove plate 309, the smaller the aperture of the oil inlet hole is. A stopper 312 is slidably adapted at the oil inlet hole of the sleeve 303. The side of the stopper 312 close to the fixed groove plate 309 is fixedly installed at the center position of the outer side of the fixed groove plate 309 through a rod. The sleeve 303 is docked with the oil outlet so that the oil outlet enters the interior of the sleeve 303. In the process of entry, the oil outlet and the sleeve 303 are fixed by changing the aperture of the oil inlet hole of the sleeve 303 and cooperating with the rubber sleeve 313 to squeeze the oil outlet. A rubber sleeve 313 is fixedly installed at the oil inlet hole of the sleeve 303.

[0018] The third embodiment is based on the first and second embodiments. Figures 8 to 9As shown, the material guiding mechanism 4 includes a guide cylinder 41, the top of the outer side of the guide cylinder 41 is fixedly connected to the inner wall of the metering cylinder 21, and a gasket 44 is fixedly installed on the top of the inner wall of the guide cylinder 41, and the inner wall of the gasket 44 is slidably adapted to be equipped with a sliding plate 42, and a flow limiting block 45 is fixedly installed on the bottom of the sliding plate 42. There is a gap between the flow limiting block 45 and the inner wall of the guide cylinder 41. The worker removes the cylinder cover 43 at the bottom end of the guide cylinder 41, and places the container under the guide cylinder 41, and then pushes the pull rod 1. Under the action of the internal hydraulic pressure, the sliding plate 42 transmits the pressure to the elastic cover 48 through the flow limiting block 45, causing the elastic cover 48 to deform, and the sliding column 46 slides downward under the restriction of the sliding hole plate 49, and the center position of the bottom of the flow limiting block 45 A sliding column 46 is fixedly installed, a sliding hole disk 49 is fixedly installed on the bottom of the inner wall of the guide tube 41, leakage holes are evenly opened on the top of the sliding hole disk 49, and the inner wall of the sliding hole disk 49 is slidably adapted to the outer side of the sliding column 46, and an elastic cover 48 is fixedly installed between the sliding hole disk 49 and the flow limiting block 45. After the sliding plate 42 slides downward for a certain distance in the gasket 44, the gap is opened to allow the insulating oil in the metering cylinder 21 to enter the guide tube 41, and the insulating oil passes through the sliding hole disk 49 and is guided by the guide tube 41 into the container for collection. The bottom end of the guide tube 41 is detachably installed with a cylinder cover 43, and a chassis 47 is fixedly installed at the bottom end of the sliding column 46, and the bottom of the chassis 47 is in contact with the center position of the top of the cylinder cover 43.

[0019] When in use, the worker opens the oil outlet of the transformer and connects the connecting mechanism 3 of the sampling equipment to the oil outlet. When extracting and sampling the insulating oil inside the transformer, the worker holds the sampling tube 2 and squeezes the connecting mechanism 3 toward the oil outlet of the transformer to open the internal path of the connecting mechanism 3. The worker pulls the pull rod 1 to allow the insulating oil to enter the sampling tube 2 through the connecting mechanism 3. After extracting a proper amount of insulating oil, the worker stops pressing and closes the path. The worker pushes the pull rod 1 to move the rubber plug 5 to remove the air in the sampling tube 2. The worker leaves one end spaced to allow the insulating oil inside the transformer to flow for a period of time and then continues to extract until a proper amount of insulating oil is taken out. The insulating oil is then pushed through the pull rod 1 and the insulating oil in the sampling tube 2 is guided into the container by the material guide mechanism 4 for storage.

[0020] When connecting with the oil outlet of the transformer through the connecting mechanism 3, the sleeve 303 is docked with the oil outlet so that the oil outlet enters the sleeve 303. In the process of entering, the oil outlet and the sleeve 303 are fixed by changing the diameter of the oil inlet hole of the sleeve 303 and cooperating with the rubber sleeve 313 to squeeze the oil outlet. When sampling, the threaded tube 301 drives the fixing ring 308 to squeeze the outer cover tube 304, so that the outer cover tube 304 drives the fixing groove plate 309 to squeeze the spring 311. Under certain conditions, the spring 311 is deformed, and the sleeve 303 slides toward the inside of the outer cover tube 304, so that a gap is opened between the stopper 312 and the oil inlet hole of the sleeve 303, so that the insulating oil enters through the gap, and passes through the fixed groove plate 309, the hole cover 305 and the inner groove plate 302 in sequence, reaches the sampling tube 2, and is filtered through the filter holes when passing through the hole cover 305. The blocked debris is driven by the flowing insulating oil to move outward along the shape of the hole cover 305, enter the arc-shaped ring groove of the outer groove ring 306 and accumulate.

[0021] During the process of squeezing and pulling the pull rod 1, the insulating oil enters the metering cylinder 21 through the connecting mechanism 3. After each extraction of an appropriate amount of insulating oil, the worker stops squeezing to close the path of the connecting mechanism 3 between the oil outlet and the metering cylinder 21. The worker pushes the pull rod 1 forward to make the rubber plug 5 squeeze the insulating oil in the metering cylinder 21. During the squeezing process, the air in the metering cylinder 21 flows upward during the pressurization process and is discharged upward through the gap between the exhaust pipe 23 and the sealing block 26. The air pressure generated by the squeezing pushes the sealing disk 27 to open the gap with the exhaust pipe 23. After the air is discharged, the insulating oil contacts the floating block 25, so that the floating block 25 drives the connecting rod 24 and the sealing block 26 upward under the buoyancy, so that the sealing block 26 blocks the exhaust pipe 23.

[0022] After the sampling is completed, the worker removes the cylinder cover 43 at the bottom of the guide cylinder 41, and places the container under the guide cylinder 41, and then pushes the pull rod 1. Under the action of the internal hydraulic pressure, the sliding plate 42 transmits the pressure to the elastic cover 48 through the flow limiting block 45, causing the elastic cover 48 to deform, and the sliding column 46 slides downward under the restriction of the sliding hole plate 49. After the sliding plate 42 slides downward for a certain distance in the gasket 44, the gap is opened to allow the insulating oil in the metering cylinder 21 to enter the guide cylinder 41, and the insulating oil passes through the sliding hole plate 49 and is diverted by the guide cylinder 41 into the container for collection.

[0023] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A transformer insulation material aging sampling device, characterized in that: include: A sampling cylinder (2), the sampling cylinder (2) is used to measure the amount of insulating oil extracted, and a rubber plug (5) is slidably mounted on the inner wall of the sampling cylinder (2), and a pull rod (1) is fixedly mounted on the outer side of the rubber plug (5); A connecting mechanism (3), the connecting mechanism (3) being used to connect the oil outlet of the transformer and control the communication between the oil outlet of the transformer and the sampling cylinder (2), and the connecting mechanism (3) being installed at one end of the sampling cylinder (2); A material guiding mechanism (4), the material guiding mechanism (4) being used to guide the insulating oil in the sampling barrel (2) into the storage container, and the material guiding mechanism (4) being installed at one end of the bottom of the sampling barrel (2) close to the connecting mechanism (3); The sampling cylinder (2) comprises a metering cylinder (21), a threaded ring (22) is fixedly mounted on one end of the metering cylinder (21) close to the connecting mechanism (3), the metering cylinder (21) is threadedly connected to the connecting mechanism (3) via the threaded ring (22), the material guiding mechanism (4) is mounted on a side of the bottom of the metering cylinder (21) close to the connecting mechanism (3), and an exhaust cylinder (23) is fixedly mounted on a side of the top of the metering cylinder (21) close to the connecting mechanism (3), the exhaust cylinder ( 23) is connected to the metering cylinder (21), and the inner wall of the exhaust cylinder (23) is provided with an air groove, and the air groove is a conical groove. A connecting rod (24) is installed on the inner wall of the exhaust cylinder (23), and a sealing disk (27) is fixedly installed at the bottom of the connecting rod (24), and a gap exists between the connecting rod (24) and the inner wall of the exhaust cylinder (23), a sealing block (26) is fixedly installed at the bottom of the outer side of the connecting rod (24), and a floating block (25) is fixedly installed at the bottom end of the connecting rod (24).

2. The transformer insulation material aging sampling device according to claim 1 is characterized in that: The rubber stopper (5) is slidably mounted on the inner wall of the metering cylinder (21), and the rubber stopper (5) and the metering cylinder (21) are tightly fitted, and the pull rod (1) is fixedly mounted at the center position of the rubber stopper (5) away from the connecting mechanism (3).

3. The transformer insulation material aging sampling device according to claim 1 is characterized in that: The connection mechanism (3) comprises a threaded barrel (301), the outer side of the threaded barrel (301) being threadedly connected to the inner wall of the threaded ring (22), and a fixing ring (308) being fixedly mounted on one end of the threaded barrel (301) away from the threaded ring (22), a rubber gasket (307) being clamped between the fixing ring (308) and the threaded barrel (301), and an inner groove disk (302) being fixedly mounted on the inner wall of the fixing ring (308).

4. The transformer insulation material aging sampling device according to claim 3 is characterized in that: An outer cover tube (304) is fixedly mounted on the outer side of the fixing ring (308), and an escutcheon (305) is fixedly mounted on the inner wall of the outer cover tube (304) on a side close to the fixing ring (308). Filter holes are evenly formed on the outer side of the escutcheon (305), and the center position of the escutcheon (305) protrudes toward a side away from the inner groove plate (302).

5. The transformer insulation material aging sampling device according to claim 4 is characterized in that: An outer groove ring (306) is fixedly mounted on the inner wall of the outer cover tube (304); an arcuate ring groove is formed on a side of the outer groove ring (306) close to the inner groove disk (302); and the outer groove ring (306) is located outside the escutcheon (305); a fixed groove disk (309) is fixedly mounted on one end of the inner wall of the outer cover tube (304) away from the threaded ring (22); and empty grooves are uniformly formed on the outer side of the fixed groove disk (309).

6. The transformer insulation material aging sampling device according to claim 5, characterized in that: A sleeve (303) is slidably mounted on the inner wall of the outer cover tube (304); a spring (311) is fixedly mounted between the sleeve (303) and the fixed groove disk (309); a retaining cylinder (310) is fixedly mounted on a side of the fixed groove disk (309) close to the sleeve (303); the retaining cylinder (310) and the sleeve (303) are slidably fitted together; the retaining cylinder (310) is located outside the empty groove of the fixed groove disk (309).

7. The transformer insulation material aging sampling device according to claim 6, characterized in that: An oil inlet hole is provided at the center position of the outer side of the sleeve (303), and the diameter of the oil inlet hole decreases as it approaches the fixed groove plate (309). A stopper (312) is slidably adapted at the oil inlet hole of the sleeve (303), and a side of the stopper (312) close to the fixed groove plate (309) is fixedly mounted at the center position of the outer side of the fixed groove plate (309) via a rod. A rubber sleeve (313) is fixedly mounted at the oil inlet hole of the sleeve (303).

8. The transformer insulation material aging sampling device according to claim 1 is characterized by: The material guiding mechanism (4) comprises a guide tube (41), the top of the outer side of the guide tube (41) is fixedly connected to the inner wall of the metering tube (21), and a gasket (44) is fixedly installed on the top of the inner wall of the guide tube (41), the inner wall of the gasket (44) is slidably adapted to be equipped with a sliding plate (42), and a limiting flow block (45) is fixedly installed on the bottom of the sliding plate (42).

9. The transformer insulation material aging sampling device according to claim 8, characterized in that: There is a gap between the flow limiting block (45) and the inner wall of the flow guide tube (41), and a sliding column (46) is fixedly installed at the center position of the bottom of the flow limiting block (45), and a sliding hole disk (49) is fixedly installed at the bottom of the inner wall of the flow guide tube (41), and leakage holes are evenly opened on the top of the sliding hole disk (49), and the inner wall of the sliding hole disk (49) is slidably adapted to the outer side of the sliding column (46).

10. The transformer insulation material aging sampling device according to claim 9, characterized in that: An elastic cover (48) is fixedly mounted between the sliding hole plate (49) and the flow limiting block (45); a cylinder cover (43) is detachably mounted on the bottom end of the guide cylinder (41); a bottom plate (47) is fixedly mounted on the bottom end of the sliding column (46); and the bottom of the bottom plate (47) is in contact with the center position of the top of the cylinder cover (43).

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