A live measurement device for the oil level of a capsule-type transformer conservator

Abstract

The present invention discloses a live oil level measuring device for a capsule-type transformer conservator, which relates to the technical field of oil level measurement of substation equipment. It includes an operating rod and an oil level gauge. The lower end of the reversing rod is fixedly connected to the top of the operating rod, and a rack is fixedly connected thereto. A vertical rod is fixedly connected to the middle of the horizontal rail. The upper end of the reversing rod is movably sleeved on the vertical rod. The probe of the oil level gauge is slidably connected to the horizontal rail through a slider. The top plate is fixedly connected to the horizontal rail. The shaft rod is rotatably connected to the top plate. A disc and a gear are coaxially fixedly connected to the shaft rod. The gear can mesh with the rack. One ends of two ropes are respectively wound around the disc in opposite directions, and the other ends respectively bypass one end of the horizontal rail and are fixedly connected to the slider. The present invention can make the probe perform multi-point measurement on the capsule-type transformer conservator at the same height at multiple positions, thereby greatly improving the accuracy of the oil level of the conservator measured at each position. The operation is simple and convenient, and the efficiency of multi-point measurement is high.

Description

Technical Field

[0001] The present invention relates to the technical field of oil level measurement for substation equipment, and specifically to a live oil level measurement device for a capsule-type transformer conservator. Background Art

[0002] A portable oil level gauge is an instrument that measures the internal oil level from the outside (bottom) of the conservator using the principle of sonar ranging. It has the advantage of completely isolated measurement, breaking the traditional measurement method of opening the tank and making contact, and realizing true non-contact measurement of the oil level height in a closed container. Its sonar sensor (probe) is adsorbed directly below the outer wall of the conservator, without the need to open holes in the measured container, and the measurement is simple. When measuring the oil level, the sonar wave signal is emitted from the probe, reflected by the oil surface, and then the echo signal is detected by the probe. After being processed by a proprietary algorithm, the time is calculated, and the system calculates the oil level height based on the echo time and the sound speed of the medium.

[0003] The existing portable oil level gauge is bound to an operating rod, and the probe is sent to the bottom of the outer wall of the transformer conservator through the operating rod for measurement. For a capsule-type transformer conservator, it is often necessary to perform multi-point measurements to detect whether the oil levels at various positions in the conservator are consistent. Since the outer wall of the capsule-type transformer conservator is mostly cylindrical, it is very difficult to ensure that the heights of the probe at each measurement position are the same during multi-point measurement, which results in an error between the measured oil levels at each position and the actual oil level, and is not conducive to making an accurate judgment on the overall oil level in the conservator. Summary of the Invention

[0004] The purpose of the present invention is to provide a live oil level measurement device for a capsule-type transformer conservator to solve the problem that it is difficult to keep the heights of the probe at each measurement position consistent during multi-point measurement of the capsule-type transformer conservator, thus causing measurement errors.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A live oil level measurement device for a capsule-type transformer conservator, including an operating rod and an oil level gauge, and further including: a reversing rod, the lower end of which is fixedly connected to the top of the operating rod, and a rack is fixedly connected thereto; a horizontal rail, a vertical rod coaxial with the operating rod is fixedly connected to the middle thereof, the upper end of the reversing rod is movably sleeved on the vertical rod, and the probe of the oil level gauge is slidably connected to the horizontal rail through a slider; a top plate, which is fixedly connected to the horizontal rail and used to connect the bottom of the conservator; a shaft rod, which is rotatably connected to the top plate, a wheel disc and a gear are coaxially fixedly connected to the shaft rod, and the gear can be meshed with the rack; two ropes, one end of each of which is wound and connected to the wheel disc in opposite directions, and the other end of each passes around an end of the horizontal rail and is fixedly connected to the slider.

[0006] Further, the top plate includes a connected mounting plate and an arc plate. The mounting plate is fixedly connected to the cross rail through a bolt pair. The arc plate is in an arc shape adapted to the outer diameter of the conservator. A connecting member connected to the bottom of the conservator is provided on the inner arc surface of the arc plate.

[0007] Further, the connecting member includes a plurality of suction cups and / or magnets facing the center of the arc of the arc plate.

[0008] Further, the connecting member includes a plurality of suction cups facing the center of the arc of the arc plate, and magnets are respectively embedded in the centers of the inner shells of the suction cups.

[0009] Further, the suction cup is fixedly connected to the arc plate or movably connected through a universal ball head.

[0010] Further, the vertical rod is cylindrical, and a guide groove is provided on the circumferential side surface of the vertical rod. The guide groove includes two straight grooves parallel to the axial direction of the vertical rod and a semi-circular groove coaxial with the vertical rod. Both ends of the semi-circular groove are communicated with one straight groove respectively; the upper end of the reversing rod has a movable sleeve, the movable sleeve is sleeved on the vertical rod, and a protrusion is provided on the inner wall of the movable sleeve, and the protrusion is in sliding fit with the guide groove.

[0011] Further, a bracket is connected to the top plate through a bolt pair, and the bottom of the bracket is rotatably connected to the shaft rod through a bearing.

[0012] Further, a limiting ring is fixedly connected to the bracket, and the limiting ring is used to guide the wire harness of the probe.

[0013] Further, an elastic positioning member is provided between the middle of the cross rail and the slider.

[0014] Further, the main body of the oil level gauge is installed on the operating rod.

[0015] In the above technical solution, for a capsule-type transformer conservator oil level live measurement device provided by the present invention, the top plate is pushed to the bottom of the conservator through the operating rod, and the probe emits a sonar signal and receives the returned signal to measure the oil level in the conservator. When it is necessary to adjust the position of the probe for multi-point measurement, the operating rod is pushed upward so that the reversing rod moves along the vertical rod, and the rack meshes with the gear to make the turntable rotate forward. While the turntable winds one of the ropes, the other rope is released, thereby pulling the slider to move to one end of the cross rail to adjust the position of the probe, realizing multi-point measurement of the conservator. Moving the operating rod downward can make the turntable rotate reversely through the cooperation of the rack and the gear. The turntable can pull the slider and the probe to move back to the middle of the cross rail through the rope. Then, the operating rod is rotated 180°. The rotation of the reversing rod on the vertical rod drives the rack to rotate 180° together. The other side of the rack faces the gear. Subsequently, pushing the operating rod upward makes the rack cooperate with the gear, driving the turntable to continue rotating reversely, and the slider and the probe can be moved to the other end of the cross rail through the rope, further adjusting the position of the probe, realizing a wider range of multi-point measurement of the conservator.

[0016] The present invention enables the probe to perform multi-point measurement on the capsule-type transformer conservator at the same height at multiple positions. The height of the probe remains consistent at each measurement position, thereby greatly improving the accuracy of the conservator oil level measured at each position, and the operation is simple and convenient, and the efficiency of multi-point measurement is high. Brief Description of the Drawings

[0017] In order to describe the technical solutions in the embodiments of the present application or the prior art more clearly, the drawings required to be used in the embodiments will be briefly introduced below.

[0018] Figure 1 Structural schematic provided for the embodiment Figure Ⅰ ;

[0019] Figure 2 Structural schematic provided for the embodiment Figure Ⅱ ;

[0020] Figure 3 Front view of the structure provided for the embodiment;

[0021] Figure 4 Rear view of the structure provided for the embodiment;

[0022] Figure 5 Structural schematic of the vertical rod and the guide groove provided for the embodiment;

[0023] Figure 6 Structural schematic of the V-shaped groove provided for the embodiment;

[0024] Figure 7 Structural schematic of the elastic positioning member provided for the embodiment;

[0025] Figure 8 Structural schematic of the connection structure between the suction cup and the top plate provided for the embodiment;

[0026] Figure 9 Structural schematic of the connection structure between the suction cup and the top plate provided for another embodiment.

[0027] Description of the reference numerals:

[0028] 1. Joystick; 2. Oil level gauge; 21. Probe; 22. Wiring harness; 3. Reversing lever; 31. Movable sleeve; 4. Top plate; 41. Mounting plate; 42. Arc plate; 5. Suction cup; 6. Magnet; 7. Universal ball head; 8. Cross rail; 9. Vertical rod; 91. Semi-circular groove; 92. Straight groove; 10. Bracket; 11. Shaft rod; 12. Wheel disc; 121. First wheel groove; 122. Second wheel groove; 13. Gear; 14. Rack; 15. Slide block; 161. V-shaped groove; 162. Slide rod; 163. Spring; 171. First fixed pulley; 172. Second fixed pulley; 181. First rope; 182. Second rope; 19. Limit ring. Detailed implementation manners

[0029] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] Please refer to Figures 1-9 , the capsule-type transformer oil conservator oil level live measurement device provided by the embodiment of the present invention is used for multi-point measurement of the capsule-type transformer oil conservator when the transformer is operating live, and mainly includes a joystick 1, an oil level gauge 2, a reversing lever 3, a cross rail 8, a vertical rod 9, a top plate 4, a shaft rod 11 and two ropes.

[0031] The joystick 1 preferably adopts a lightweight telescopic insulating rod, such as a fiberglass epoxy resin rod. The body of the oil level gauge 2 is fixedly installed on the joystick 1 near the top or near the bottom through a hoop. The probe 21 of the oil level gauge 2 is electrically connected to the body of the oil level gauge 2 through a wiring harness 22. The probe 21 is fixedly installed on the slide block 15 through a clamp. The slide block 15 is slidably connected to one side of the cross rail 8. By moving the slide block 15, the position of the probe 21 can be adjusted in the horizontal direction.

[0032] Refer to Figures 5-6 , an elastic positioning member is provided between the middle of the cross rail 8 and the slide block 15. The elastic positioning member includes a V-shaped groove 161, a slide rod 162 and a spring 163. The V-shaped groove 161 is opened in the middle of the cross rail 8. The slide rod 162 is slidably inserted into the hole in the slide block 15. The spring 163 is also located in the hole. A plug is screwed to one end of the hole away from the cross rail 8. The spring 163 is a compression spring. One end of the spring 163 abuts against the slide block 15, and the other end abuts against the plug. The elastic force of the spring 163 causes the slide rod 162 to abut against the cross rail 8. When the slide block 15 is close to the middle of the cross rail 8, the slide rod 162 enters the V-shaped groove 161. The slide rod 162 has a tendency to slide towards the middle of the V-shaped groove 161 under the extrusion of the spring 163, thereby driving the slide block 15 to slide to the exact middle of the cross bar. Therefore, when the slide block 15 moves to the vicinity of the cross rail 8, the elastic positioning member can accurately reset the slide block 15 to the exact middle of the cross rail 8.

[0033] The top plate 4 includes a connected mounting plate 41 and an arc plate 42. The mounting plate 41 is fixedly mounted on the other side of the middle part of the cross rail 8 through a plurality of bolt pairs. The arc plate 42 is in an arc shape adapted to the outer diameter of the oil conservator. A connecting member is provided on the inner arc surface of the arc plate 42, and the connecting member is used to connect the arc plate 42 to the bottom of the outer wall of the oil conservator.

[0034] Specifically, the connecting member includes a plurality of suction cups 5 facing the center of the arc of the arc plate 42, and the suction cups 5 can adsorb the relatively smooth outer wall of the oil conservator; or the connecting member includes a plurality of magnets 6, and the magnets 6 are fixedly embedded in the arc plate 42. The upper surface of the magnets 6 is also in an arc shape adapted to the bottom of the outer wall of the oil conservator, and the magnets 6 can magnetically attract the outer wall of the oil conservator made of a main magnetic material; or the connecting member includes a plurality of suction cups 5 facing the center of the arc of the arc plate 42, and magnets 6 are respectively embedded in the centers of the inner shells of the suction cups 5, so that it can be connected to both the relatively smooth outer wall of the oil conservator and the outer wall of the oil conservator made of a magnetic material, and there is no interference between the magnets 6 and the suction cups 5. The suction cups 5 and the arc plate 42 can be fixedly connected or movably connected through a universal ball head 7. In the case of fixed connection, the suction cups 5 are arranged facing the center of the arc of the arc plate 42 to adapt to a cylindrical oil conservator, such as Figure 8 ; in the case of movable connection, the orientation of the suction cups 5 can be flexibly adjusted, so that it can not only adapt to a cylindrical oil conservator, but also adapt to other oil conservators with special designs of other shapes, such as Figure 9 .

[0035] The vertical rod 9 is fixedly connected to the cross rail 8 or fixedly connected to the top plate 4, that is, the vertical rod 9, the cross rail 8 and the top plate 4 are fixedly connected. The vertical rod 9 is located in the middle of the cross rail 8 and is coaxial with the operating rod 1. Refer to Figure 5 , the vertical rod 9 is in a cylindrical shape, and a guide groove is provided on the circumferential side surface of the vertical rod 9. The guide groove includes two straight grooves 92 and a semi-circular groove 91. The two straight grooves 92 are both parallel to the axis of the vertical rod 9 and are distributed at 180° in the circumferential direction of the vertical rod 9. The semi-circular groove 91 is coaxial with the vertical rod 9, and both ends of the semi-circular groove 91 are communicated with a straight groove 92 respectively.

[0036] The reversing rod 3 is in a U shape, with a movable sleeve 31 at the upper end and a fixed sleeve at the lower end. The movable sleeve 31, the fixed sleeve and the annular rod are integrally formed. The movable sleeve 31 is sleeved on the vertical rod 9, and a spherical protrusion or a rolling ball is fixedly connected to the inner wall of the movable sleeve 31, and the protrusion or the ball slides or rolls in the guide groove. The fixed sleeve is sleeved on the top of the operating rod 1 and is locked on the operating rod 1 through a locking bolt.

[0037] A rack 14 is welded or embedded in the middle of the reversing rod 3, and the length direction of the rack 14 is the same as the axial direction of the vertical rod 9. A V-shaped bracket 10 is fixedly connected to the mounting plate 41 through a bolt pair. The shaft rod 11 is rotatably connected to the bottom of the bracket 10 through a bearing. The axis of the shaft rod 11 is perpendicular to the axis of the vertical rod 9. A gear 13 is coaxially and fixedly connected to the shaft rod 11, and the gear 13 can be meshed and matched with the rack 14. A limit ring 19 is fixedly connected to the bracket 10, and the wire harness 22 of the probe 21 passes through the limit ring 19, so that the limit ring 19 plays a role in guiding the wire harness 22 of the probe 21.

[0038] A disk 12 is also coaxially and fixedly connected to the shaft rod 11, and the disk 12 has a first groove 121 and a second groove 122 arranged in parallel. The two ropes are a first rope 181 and a second rope 182. One end of the first rope 181 is wound clockwise and connected in the first groove 121, and the other end is fixed to the slider 15 after passing around the first fixed pulley 171 at one end of the cross rail 8; One end of the second rope 182 is wound counterclockwise and connected in the second groove 122, and the other end is also fixed to the slider 15 after passing around the second fixed pulley 172 at the other end of the cross rail 8. The winding directions of the two ropes on the disk 12 are opposite, and the two ropes are both in a tensioned state.

[0039] When the present invention measures the capsule type transformer conservator, first, the top plate 4 is pushed to the bottom of the conservator through the operating rod 1. The top plate 4 is connected to the bottom of the outer wall of the conservator through a connecting piece. The probe 21 emits a sonar signal and receives the returned signal to measure the oil level in the conservator.

[0040] When it is necessary to adjust the position of the probe 21 for multi-point measurement, the operating rod 1 is pushed upward so that the reversing rod 3 and the rack 14 move along the vertical rod 9. The protrusion of the movable sleeve 31 moves upward along one of the straight grooves 92. The meshing of the rack 14 and the gear 13 makes the disk 12 rotate forward. While the disk 12 winds the second rope 182, it releases the first rope 181. The second rope 182 pulls the slider 15 to move on the cross rail 8 towards the second fixed pulley 172 to adjust the position of the probe 21, realizing multi-point measurement of the conservator.

[0041] Next, pulling down the operating rod 1 can make the disk 12 rotate reversely through the cooperation of the rack 14 and the gear 13. While the disk 12 winds the first rope 181, it releases the second rope 182. The first rope 181 pulls the slider 15 to move back to the middle of the cross rail 8. At this time, the rack 14 also disengages from the gear 13.

[0042] Then, the reversing lever 3 and the rack 14 are rotated 180° by operating the lever 1. The protrusion on the movable sleeve 31 slides along the annular groove into another straight groove 92. At this time, the rack 14 faces the other side of the gear 13. Subsequently, pushing up the operating lever 1 causes the rack 14 to cooperate with the gear 13, thereby driving the disc 12 to continue to reverse. While the disc 12 continues to wind the first rope 181, the second rope 182 is released. The first rope 181 pulls the slider 15 to move on the cross rail 8 towards the first fixed pulley 171 to adjust the position of the probe 21, so as to achieve a wider range of multi-point measurement of the oil conservator.

[0043] Subsequently, pulling down the operating lever 1 can cause the disc 12 to rotate forward through the cooperation of the rack 14 and the gear 13. While the disc 12 winds the second rope 182, the first rope 181 is released. The second rope 182 pulls the slider 15 to move back to the middle of the cross rail 8. At this time, the annular rod slides down to the limit position on the vertical rod 9, that is, the protrusion in the movable ring enters the annular groove and the movable ring abuts against the limit block at the bottom of the vertical rod 9. Pulling down the operating lever 1 with a slightly greater force, the operating lever 1 pulls down the top plate 4 through the reversing lever 3 and the vertical rod 9, so that the connecting piece is separated from the oil conservator and can be removed.

[0044] The present invention can enable the probe 21 to perform multi-point measurement on the capsule-type transformer oil conservator at the same height at multiple positions. The height of the probe 21 remains consistent at each measurement position, thereby greatly improving the accuracy of the oil level of the oil conservator measured at each position, and the operation is simple and convenient, and the efficiency of multi-point measurement is high.

[0045] The above describes some exemplary embodiments of the present invention, and should not be construed as limiting the protection scope of the claims of the present invention. For those skilled in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in other different ways.

Claims

1. A capsule-type transformer oil conservator oil level live measuring device, comprising an operating lever and an oil level gauge, characterized in that: Also includes: A reversing rod, the lower end of which is fixedly connected to the top of the operating rod, and a rack is fixedly connected to the upper end of the reversing rod; A horizontal rail, wherein the middle of the horizontal rail is fixedly connected with a vertical rod coaxial with the operating rod, the upper end of the reversing rod is movably sleeved on the vertical rod, and the probe of the oil level gauge is slidably connected to the horizontal rail through a slider; the vertical rod is cylindrical, and a guide groove is provided on the peripheral side of the vertical rod, and the guide groove includes two straight grooves parallel to the axial direction of the vertical rod and a semicircular groove coaxial with the vertical rod, and the two ends of the semicircular groove are respectively connected with a straight groove; the upper end of the reversing rod has a movable sleeve, which is sleeved on the vertical rod, and the inner wall of the movable sleeve is provided with a protrusion, which is slidably matched with the guide groove; A top plate, which is fixedly connected to the cross rail and is used to connect to the bottom of the oil pillow; A shaft rod is rotatably connected to the top plate, a wheel disc and a gear are coaxially fixedly connected to the shaft rod, and the gear and the rack can mesh; One end of the two ropes is respectively wound around the wheel in opposite directions, and the other end is respectively passed around one end of the cross rail and then fixedly connected to the slider.

2. The capsule-type transformer oil conservator oil level live measuring device according to claim 1 is characterized in that: The top plate includes a connected mounting plate and an arc plate. The mounting plate is fixedly connected to the cross rail by a bolt pair. The arc plate is in an arc shape that matches the outer diameter of the oil pillow. A connecting piece connected to the bottom of the oil pillow is arranged on the inner arc surface of the arc plate.

3. The capsule-type transformer oil conservator oil level live measuring device according to claim 2 is characterized in that: The connecting member includes a plurality of suction cups and / or magnets facing the arc center of the arc plate.

4. The capsule-type transformer oil conservator oil level live measuring device according to claim 2 is characterized in that: The connecting member comprises a plurality of suction cups facing the arc center of the arc plate, and a magnet is respectively embedded in the center of the inner shell of each suction cup.

5. The capsule-type transformer oil conservator oil level live measuring device according to claim 4 is characterized in that: The suction cup is fixedly connected to the arc plate or movably connected via a universal ball head.

6. The capsule-type transformer oil conservator oil level live measuring device according to claim 1 is characterized in that: The top plate is connected with a bracket via a bolt pair, and the bottom of the bracket is rotatably connected to the shaft rod via a bearing.

7. The capsule-type transformer oil conservator oil level live measuring device according to claim 6 is characterized in that: The bracket is fixedly connected with a limiting ring, and the limiting ring is used for guiding the wiring harness of the probe.

8. The capsule-type transformer oil conservator oil level live measuring device according to claim 1 is characterized in that: An elastic positioning piece is arranged between the middle part of the cross rail and the sliding block.

9. The capsule-type transformer oil conservator oil level live measuring device according to claim 1 is characterized in that: The main body of the oil level gauge is installed on the operating rod.

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