Capsule type transformer expansion tank oil level live line measuring device

Abstract

The invention discloses a capsule type transformer expansion tank oil level live-line measuring device, and relates to the technical field of transformer equipment oil level measurement, and the device comprises an operation rod and an oil level indicator, the lower end of a reversing rod is fixedly connected to the top of the operation rod, a rack is fixedly connected to the reversing rod, a vertical rod is fixedly connected to the middle of a cross rail, and the upper end of the reversing rod movably sleeves the vertical rod; a probe of the oil level gauge is connected to the transverse rail in a sliding mode through a sliding block, the top plate is fixedly connected to the transverse rail, the shaft rod is rotationally connected with the top plate, a wheel disc and a gear are coaxially and fixedly connected to the shaft rod, and the gear can be meshed with the rack. And the other ends of the sliding blocks are fixedly connected to the sliding blocks after bypassing one end part of the transverse rail. According to the invention, the probe can carry out multi-point measurement on the oil conservator of the capsule type transformer at a plurality of positions at the same height, so that the precision of measuring the oil level of the oil conservator at each position is greatly improved, the operation is simple and convenient, and the multi-point measurement efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of oil level measurement of power transformation equipment, in particular to a capsule-type transformer oil conservator oil level live measurement device. Background Art

[0002] The portable oil level meter is an instrument that uses the sonar ranging principle to measure the internal oil level from the outside (bottom) of the oil pillow. It has the advantage of completely isolated measurement, breaking the traditional contact measurement method of opening the can and realizing the true non-contact measurement of the oil level height in the closed container. Its sonar sensor (probe) is adsorbed directly below the outer wall of the oil pillow. There is no need to open a hole in the measured container, and the measurement is simple. When measuring the oil level, the sonar wave signal is emitted from the probe, and the echo signal is detected by the probe after being reflected by the oil surface. The time is calculated after being processed by a proprietary algorithm. The system calculates the oil level height based on the echo time and the medium sound speed.

[0003] The existing portable oil level gauge is bound to an operating lever, and the probe is sent to the bottom of the outer wall of the transformer oil pillow for measurement through the operating lever. For capsule-type transformer oil pillows, multi-point measurements are often required to detect whether the oil levels at various positions in the oil pillow are consistent. Since the outer wall of the capsule-type transformer oil pillow is mostly cylindrical, it is difficult to ensure that the height of the probe at each measurement position is consistent when performing multi-point measurements. This leads to an error between the oil level measured at each position and the actual oil level, which is not conducive to making an accurate judgment of the overall oil level in the oil pillow. Summary of the invention

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

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a capsule-type transformer oil conservator oil level live measuring device, including an operating rod and an oil level gauge, and also 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 thereon; a cross rail, the middle of which is fixedly connected to 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 cross rail through a slider; a top plate, which is fixedly connected to the cross rail and is used to connect the bottom of the oil conservator; an axle rod, which is rotatably connected to the top plate, and a wheel disc and a gear are coaxially fixedly connected to the axle rod, and the gear and the rack can mesh; two ropes, one end of which is respectively wound around the wheel disc in opposite directions, and the other end is fixedly connected to the slider after each passing around one end of the cross rail.

[0006] Furthermore, 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 adapted to the outer diameter of the oil pillow, and a connecting piece connected to the bottom of the oil pillow is arranged on the inner arc surface of the arc plate.

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

[0008] Furthermore, the connecting member includes a plurality of suction cups facing the arc center of the arc plate, and a magnet is embedded in the center of the inner shell of each suction cup.

[0009] Furthermore, the suction cup and the arc plate are fixedly connected or movably connected via a universal ball head.

[0010] Furthermore, the vertical rod is cylindrical, and a guide groove is provided on the circumferential side of the vertical rod, 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 to a straight groove; the upper end of the reversing rod has a movable sleeve, the movable sleeve is arranged on the vertical rod, and the inner wall of the movable sleeve is provided with a protrusion, which slides in cooperation with the guide groove.

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

[0012] Furthermore, a limit ring is fixedly connected to the bracket, and the limit ring is used to guide the wiring harness of the probe.

[0013] Furthermore, an elastic positioning member is provided between the middle portion of the cross rail and the sliding block.

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

[0015] In the above technical solution, the present invention provides a capsule-type transformer oil conservator oil level live measuring device, which uses an operating lever to push the top plate to the bottom of the oil conservator, and the probe emits sonar signals and receives return signals to measure the oil level in the oil conservator. When the position of the probe needs to be adjusted for multi-point measurement, the operating lever is pushed upward to make the reversing rod move along the vertical rod, the rack and the gear mesh with each other to make the wheel rotate forward, and the wheel winds one of the ropes while releasing the other rope, thereby pulling the slider to move to one end of the horizontal rail to adjust the position of the probe, thereby achieving multi-point measurement of the oil conservator. Moving the operating lever downward can reverse the wheel through the coordination of the rack and the gear, and the wheel can then pull the slider and the probe through the rope to move and reset to the middle of the horizontal rail. Then turn the operating lever 180°, and the rack is driven to rotate 180° through the rotation of the reversing rod on the vertical rod. The rack faces the other side of the gear, and then push the operating lever up to make the rack and the gear cooperate to drive the wheel to continue to reverse, and the slider and the probe can be moved to the other end of the horizontal rail through the rope. The position of the probe can be further adjusted to achieve a wider multi-point measurement of the oil pillow.

[0016] The present invention enables the probe to perform multi-point measurement on the capsule transformer oil pillow at multiple positions at the same height, and the height of the probe at each measuring position remains consistent, thereby greatly improving the accuracy of the oil pillow 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 more clearly describe the embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below.

[0018] Figure 1 Structural schematic diagram provided for the embodiment Figure Ⅰ ; Figure 2 Structural schematic diagram provided for the embodiment Figure II ; Figure 3 A front view of the structure provided for the embodiment; Figure 4 A rear view of the structure provided for the embodiment; Figure 5 A schematic diagram of the structure of the vertical rod and the guide groove provided in the embodiment; Figure 6 A schematic diagram of the structure of a V-shaped groove provided in an embodiment; Figure 7 A schematic diagram of the structure of an elastic positioning member provided in an embodiment; Figure 8 A schematic diagram of the connection structure between the suction cup and the top plate provided in the embodiment; Fig. 9 A schematic diagram of the connection structure between the suction cup and the top plate provided in another embodiment.

[0019] Description of reference numerals: 1. Operating lever; 2. Oil level gauge; 21. Probe; 22. Wire harness; 3. Reversing rod; 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. Semicircular groove; 92. Straight groove; 10. Bracket; 11. Axle rod; 12. Wheel disc; 121. First wheel groove; 122. Second wheel groove; 13. Gear; 14. Rack; 15. Slider; 161. V-shaped groove; 162. Sliding rod; 163. Spring; 171. First fixed pulley; 172. Second fixed pulley; 181. First rope; 182. Second rope; 19. Limiting ring. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] See also Figure 1-9 The capsule-type transformer oil conservator oil level live measuring device provided in an embodiment of the present invention is used to perform multi-point measurement of the capsule-type transformer oil conservator when the transformer is energized. The device mainly includes an operating lever 1, an oil level gauge 2, a reversing rod 3, a horizontal rail 8, a vertical rod 9, a top plate 4, an axle rod 11 and two ropes.

[0022] The operating rod 1 preferably adopts a lightweight retractable insulating rod, such as a fiberglass epoxy resin rod. The body of the oil level gauge 2 is fixedly installed on the operating rod 1 near the top or near the bottom by a clamp. 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 slider 15 by a clamp. The slider 15 is slidably connected to one side of the cross rail 8. By moving the slider 15, the position of the probe 21 can be adjusted in the horizontal direction.

[0023] See also Figure 5-6 An elastic positioning member is provided between the middle of the cross rail 8 and the slider 15, and the elastic positioning member includes a V-shaped groove 161, a slide bar 162 and a spring 163, wherein the V-shaped groove 161 is provided in the middle of the cross rail 8, the slide bar 162 slides through the hole on the slider 15, and the spring 163 is also located in the hole, and a screw plug is screwed to one end of the hole away from the cross rail 8, and the spring 163 is a compression spring, one end of the spring 163 abuts against the slider 15, and the other end abuts against the screw plug, and the elastic force of the spring 163 causes the slide bar 162 to abut against the cross rail 8. When the slider 15 is close to the middle of the cross rail 8, the slide bar 162 enters the V-shaped groove 161, and the slide bar 162 has a tendency to slide toward the middle of the V-shaped groove 161 under the pressure of the spring 163, thereby driving the slider 15 to slide to the middle of the cross bar. Therefore, when the slider 15 moves to the vicinity of the cross rail 8 , the elastic positioning member can accurately reset the slider 15 to the middle of the cross rail 8 .

[0024] 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 of the cross rail 8 by a plurality of bolt pairs. The arc plate 42 is in an arc shape that matches the outer diameter of the oil pillow. A connecting piece is provided on the inner arc surface of the arc plate 42, and the connecting piece is used to connect the arc plate 42 to the bottom of the outer wall of the oil pillow.

[0025] Specifically, the connecting member includes a plurality of suction cups 5 facing the center of the arc plate 42. 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 fixedly embedded in the arc plate 42. The upper surface of the magnet 6 is also an arc surface adapted to the bottom of the outer wall of the oil conservator. The magnet 6 can magnetically attract the outer wall of the oil conservator made of the main magnetic material; or the connecting member includes a plurality of suction cups 5 facing the center of the arc plate 42, and magnets 6 are respectively embedded in the centers of the inner shells of the suction cups 5. Thus, it can be connected to the relatively smooth outer wall of the oil conservator or the outer wall of the oil conservator made of magnetic material, and there will be no interference between the magnet 6 and the suction cup 5. The suction cup 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 plate 42 to adapt to the cylindrical oil conservator, such as Figure 8 ; in the case of movable connection, the orientation of the suction cup 5 can be flexibly adjusted, so that it can not only adapt to the cylindrical oil conservator, but also adapt to other oil conservators with special designs of other shapes, such as Fig. 9 .

[0026] The vertical rod 9 is fixedly connected to the horizontal rail 8 or fixedly connected to the top plate 4, that is, the vertical rod 9, the horizontal rail 8 and the top plate 4 are fixedly connected. The vertical rod 9 is located in the middle of the horizontal rail 8 and is coaxial with the operating rod 1. Refer to Figure 5 , the vertical rod 9 is cylindrical, and a guide groove is formed 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.

[0027] 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 is fixedly connected to the inner wall of the movable sleeve 31 or a ball is rollingly embedded therein. 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.

[0028] A rack 14 is welded or embedded in the middle of the reversing rod 3. The length direction of the rack 14 is the same as the axis 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 fixedly connected to the shaft rod 11. The gear 13 and the rack 14 can be meshed and matched. A limit ring 19 is fixedly connected to the bracket 10. The wire harness 22 of the probe 21 passes through the limit ring 19. Thus, the limit ring 19 plays a role in guiding the wire harness 22 of the probe 21.

[0029] The shaft 11 is also coaxially fixedly connected with a wheel disc 12, and the wheel disc 12 has a first wheel groove 121 and a second wheel groove 122 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 wheel groove 121, and the other end is fixedly connected to the slider 15 after passing the first fixed pulley 171 on one end of the cross rail 8; one end of the second rope 182 is wound counterclockwise and connected in the second wheel groove 122, and the other end is also fixedly connected to the slider 15 after passing the second fixed pulley 172 on the other end of the cross rail 8. The winding directions of the two ropes on the wheel disc 12 are opposite, and both ropes are in a tensioned state.

[0030] When measuring the capsule transformer oil pillow, the present invention first pushes the top plate 4 to the bottom of the oil pillow through the operating rod 1, and the top plate 4 is connected to the bottom of the outer wall of the oil pillow through a connecting piece. The probe 21 transmits sonar signals and receives return signals to measure the oil level in the oil pillow.

[0031] When the position of the probe 21 needs to be adjusted during multi-point measurement, the operating lever 1 is pushed upward to move the reversing rod 3 and the rack 14 along the vertical rod 9, and the protrusion of the movable sleeve 31 moves upward along one of the straight grooves 92. The rack 14 engages with the gear 13 to make the wheel 12 rotate forward. The wheel 12 winds up the second rope 182 and releases the first rope 181 at the same time. The second rope 182 pulls the slider 15 on the cross rail 8 toward the second fixed pulley 172 to adjust the position of the probe 21, thereby realizing multi-point measurement of the oil pillow.

[0032] Next, the pull-down operating rod 1 can reverse the wheel 12 through the cooperation of the rack 14 and the gear 13. The wheel 12 winds up the first rope 181 and releases the second rope 182. The first rope 181 pulls the slider 15 to move and reset to the middle of the cross rail 8. At this time, the rack 14 also disengages from the gear 13.

[0033] Then the reversing rod 3 and the rack 14 are rotated 180° through the operating rod 1, and 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. Then the operating rod 1 is pushed up to make the rack 14 cooperate with the gear 13, thereby driving the wheel 12 to continue to reverse. The wheel 12 continues to wind the first rope 181 while releasing the second rope 182. The first rope 181 pulls the slider 15 on the cross rail 8 to move toward the first fixed pulley 171 to adjust the position of the probe 21, thereby realizing a wider multi-point measurement of the oil pillow.

[0034] Then, pulling down the operating rod 1 can make the wheel 12 rotate forward through the cooperation of the rack 14 and the gear 13. The wheel 12 winds up the second rope 182 and releases the first rope 181. The second rope 182 pulls the slider 15 to move and reset to the middle of the cross rail 8. At this time, the annular rod slides downward on the vertical rod 9 to the extreme position, 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. Continue to pull down the operating rod 1 with a greater force. The operating rod 1 pulls down the top plate 4 through the reversing rod 3 and the vertical rod 9, so that the connecting piece is detached from the oil pillow and can be removed.

[0035] The present invention enables the probe 21 to perform multi-point measurement on the capsule transformer oil pillow at multiple positions at the same height. The height of the probe 21 at each measuring position remains consistent, thereby greatly improving the accuracy of the oil pillow oil level measured at each position. The operation is simple and convenient, and the efficiency of multi-point measurement is high.

[0036] The above describes some exemplary embodiments of the present invention, which should not be understood as limiting the scope of protection of the claims of the present invention. For those skilled in the art, the described embodiments can be modified in other different ways without departing from the spirit and scope of the present invention.

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, the middle of which 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; 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 vertical rod is cylindrical, and a guide groove is provided on the peripheral side of the vertical rod. The guide groove includes two straight grooves parallel to the axis of the vertical rod and a semicircular groove coaxial with the vertical rod, and both ends of the semicircular groove are connected to a straight groove respectively; The upper end of the reversing rod is provided with a movable sleeve, which is arranged 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.

7. 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.

8. The capsule-type transformer oil conservator oil level live measuring device according to claim 7 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.

9. 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.

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

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