Portable Gas Relay Calibrator

Abstract

The present invention belongs to the technical field of transformer gas relay calibration devices, and discloses a portable gas relay calibrator, which includes a calibration table, a measurement and control box, and a portable base. The portable base includes a receiving seat with an open upper part. A walking wheel assembly is provided below the receiving seat, and two pull handles are respectively provided at both ends of the walking wheel assembly. The receiving seat includes: a bottom plate in the shape of a rectangular plate, a first wide plate, a second wide plate, a first long plate, and a second long plate respectively extending upward from the periphery of the bottom plate. Compared with the related art, the present invention utilizes the structural characteristics of the calibration table itself, designs the receiving seat to simultaneously accommodate the calibration table and the measurement and control box, realizes walking by using the walking wheel assembly, and realizes two-way pulling by using the two-way pull handle, improving the portability of the portable gas relay calibrator of the present invention. The walking assembly has an elastic buffering function and can walk on rough roads with various slopes, meeting the on-site use requirements.

Description

Technical Field

[0001] The present invention belongs to the technical field of transformer gas relay calibration devices, and particularly relates to a portable gas relay calibrator. Background Art

[0002] The gas relay calibrator is mainly used for the detection and calibration of relays on oil-immersed power transformers. By simulating the action mechanism of the relay during transformer internal faults and cooperating with computer measurement and control technology and signal acquisition technology, the flow rate value and volume value are quantitatively measured to achieve the purpose of measuring the flow rate value and volume value. Since the gas relay calibrator itself is relatively heavy, the gas relay calibrator in related technologies has a simple support platform or support frame structure, so it is not conducive to carrying, and it is even more difficult to carry in remote and rugged sections.

[0003] Therefore, it is necessary to provide a new portable gas relay calibrator to solve the above technical problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to disclose a portable gas relay calibrator in view of the deficiencies in the above-mentioned prior art. It is easy to carry and can walk on remote and rugged sections, which is beneficial for on-site use.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: A portable gas relay calibrator, comprising a calibration table and a measurement and control box. The portable gas relay calibrator further includes a portable base. The portable base includes a receiving seat with an upper opening. A walking wheel assembly is provided below the receiving seat. Two pull handles are respectively provided at both ends of the walking wheel assembly. The receiving seat includes: a bottom plate in the shape of a rectangular plate, a first wide plate, a second wide plate, a first long plate, and a second long plate that respectively extend upward from the periphery of the bottom plate. The first wide plate and the second wide plate are arranged opposite to each other. The first long plate and the second long plate are arranged opposite to each other. The receiving seat further includes: a first corner plate integrally in the shape of a right-angle plate, and a second corner plate integrally in the shape of a right-angle plate. There is a gap with an upper opening in the upper part of the calibration table. A first notch penetrating therethrough is provided at the upper part of the first long plate at a position directly opposite to the equipment gap. The first notch is rectangular. A second notch penetrating therethrough is provided at the upper part of the second long plate at a position directly opposite to the equipment gap. The second notch is rectangular. The first corner plate is hinged at the first notch and the rotation angle of the first corner plate relative to the first long plate is 90°. The second corner plate is hinged at the second notch and the rotation angle of the second corner plate relative to the second long plate is 90°. One side of the first corner plate and one side of the second corner plate both extend into the gap and together form a planar support platform. The calibration table is arranged in the receiving seat and located on the bottom plate. The measurement and control box is received in the gap and arranged on the support platform.

[0006] Preferably, the first corner plate is hinged at the first notch through a 90° rotating hinge, and the second corner plate is hinged at the second notch through a 90° rotating hinge.

[0007] Preferably, the second wide plate is hinged to the bottom plate.

[0008] Preferably, the pull handle includes a fixed end and a movable end. The fixed end is fixed to the walking wheel assembly, and the movable end is hinged to one end of the fixed end away from the walking wheel assembly.

[0009] Preferably, blocking strips are respectively provided at both opposite ends of the support platform.

[0010] Preferably, the portable base further includes a top cover integrally in the shape of a cover structure covering the receiving seat.

[0011] Preferably, the walking wheel assembly includes a first wheel assembly and a second wheel assembly spaced apart from the first wheel assembly. The first wheel assembly and the second wheel assembly are symmetric structures. The first wheel assembly includes a wheel axle, rollers, snap rings, support shafts, springs, bodies, and seat holders. There are two rollers, which are respectively arranged on both sides of the wheel axle. There are two springs, which are respectively sleeved outside the support shafts. There are two bodies, which are respectively arranged at one end of the support shaft away from the wheel axle. There are two snap rings, which are respectively arranged at one end of the support shaft close to the wheel axle. The snap rings are circular and sleeved outside the wheel axle. There are two seat holders, which are respectively fixed on the long first plate and the long second plate. The seat holders are provided with guide holes for the support shafts to pass through and for restricting the bodies from passing through.

[0012] Preferably, the walking wheel assembly further includes two vertical guiding units respectively arranged on the long first plate and the long second plate. The vertical guiding unit includes a vertically arranged first longitudinal rod, a first inclined rod and a second inclined rod symmetrically arranged below the first longitudinal rod, a guide wheel arranged above the first longitudinal rod, and two guide grooves respectively fixed on the long first plate and the long second plate. The guide wheel is received in the guide groove. One end of the first inclined rod away from the longitudinal rod is fixed to one of the snap rings in the first wheel assembly. One end of the second inclined rod away from the longitudinal rod is fixed to one of the snap rings in the second wheel assembly.

[0013] Preferably, the inclination angle of the first inclined rod with respect to the horizontal plane is 12 - 27°.

[0014] Preferably, the guide groove is in a "U" shape with an upward opening.

[0015] Compared with the related art, for a portable gas relay calibrator of the present invention, by utilizing the structural characteristics of the calibration bench itself, a receiving seat is designed to simultaneously receive the calibration bench and the measurement and control box. The walking wheel assembly is used for walking, and the two-way pull handle is used for two-way pulling, improving the portability of the portable gas relay calibrator of the present invention. The walking assembly has an elastic buffering function and can walk on rough roads with various slopes, meeting the on-site use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of a portable gas relay calibrator of the present invention;

[0017] Figure 2 is a front view of a portable gas relay calibrator of the present invention;

[0018] Figure 3 is a cross-sectional view of the front view of a portable gas relay calibrator of the present invention;

[0019] Figure 4 This is a left - view cross - section of a portable gas relay calibrator according to the present invention.

[0020] In the figure:

[0021] 01. Calibration table, 02. Measurement and control box, 03. Portable base, 11. Gap, 31. Receiving seat, 32. Pull handle, 33. First wheel assembly, 34. Second wheel assembly, 311. Bottom plate, 312. First wide - side plate, 313. Second wide - side plate, 314. First long - side plate, 315. Second long - side plate, 316. First corner plate, 317. Second corner plate, 318. Support platform, 319. Hinge, 320. Stop bar, 321. Fixed end, 322. Movable end, 100. First notch, 200. Second notch, 1. Wheel axle, 2. Roller, 3. Snap ring, 4. Support shaft, 5. Spring, 6. Clamping body, 7. Clamping seat, 8. First longitudinal rod, 9. First inclined rod, 10. Second inclined rod, 011. Guide wheel, 012. Guide groove, 71. Guide hole. Specific embodiments

[0022] The present invention will be described in detail below with reference to the embodiments shown in the drawings. It should be noted, however, that these embodiments are not intended to limit the present invention. Any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present invention.

[0023] Please refer to the appendix Figures 1-4, a portable gas relay calibrator, comprising a calibration table 01 and a measurement and control box 02. The portable gas relay calibrator further includes a portable base 03. The portable base 03 includes a receiving seat 31 with an upper opening. A traveling wheel assembly is provided below the receiving seat 31. Two pull handles 32 are respectively provided at both ends of the traveling wheel assembly. The receiving seat 31 includes: a bottom plate 311 in the shape of a rectangular plate, a first wide plate 312, a second wide plate 313, a first long plate 314, and a second long plate 315 that respectively extend upward from the periphery of the bottom plate 311. The first wide plate 312 and the second wide plate 313 are arranged oppositely, and the first long plate 314 and the second long plate 315 are arranged oppositely. The receiving seat 31 further includes: a first corner plate 316 integrally in the shape of a right-angle plate, and a second corner plate 317 integrally in the shape of a right-angle plate. The upper part of the calibration table 01 has a gap 11 with an upper opening. A first notch 100 penetrating therethrough is provided at the upper part of the first long plate 314 opposite to the equipment gap 11. The first notch 100 is rectangular. A second notch 200 penetrating therethrough is provided at the upper part of the second long plate 315 opposite to the equipment gap 11. The second notch 200 is rectangular. The first corner plate 316 is hinged at the first notch 100 and the rotation angle of the first corner plate 316 relative to the first long plate 314 is 90°. The second corner plate 317 is hinged at the second notch 200 and the rotation angle of the second corner plate 317 relative to the second long plate 315 is 90°. The second wide plate 313 is hinged to the bottom plate 311. More specifically, the first corner plate 316 is hinged at the first notch 100 through a 90° rotary hinge 319, and the second corner plate 317 is hinged at the second notch 200 through a 90° rotary hinge 319. The 90° rotary hinge 319 is used to limit the rotation range of the first corner plate 316 and the second corner plate 317. The pull handle 32 includes a fixed end 321 and a movable end 322. The fixed end 321 is fixed to the traveling wheel assembly, and the movable end 322 is hinged to one end of the fixed end 321 away from the traveling wheel assembly. More specifically, retaining bars 320 are respectively provided at two opposite end portions of the support platform 318. The retaining bars 320 serve as another set of side baffles on opposite sides of the measurement and control box 02 to prevent the measurement and control box 02 from sliding in the front-rear direction. The portable base 03 further includes a top cover integrally in the shape of a cover structure covering the receiving seat 31.

[0024] A portable gas relay calibrator of the present invention is a special device for the flow rate value and volume value of the gas relay used in power transformers. It adopts micro-control technology. By detecting a high-precision pressure sensor and simulating the instantaneous blasting pulse pressure method during an internal fault of the transformer, the flow rate value is calculated to detect the operation of the heavy gas protection of the gas relay. A precision container is combined with a micro-pressure sensor to calculate the light gas volume value by detecting the volume of the liquid discharged inside the gas relay. The calibration bench 01 is used to provide an experimental test platform, and the measurement and control box 02 is used to integrate the micro-control device. When the portable gas relay calibrator of the present invention is in use, first rotate and open the wide second plate 313 around the position hinged to the bottom plate 311 to form a lateral opening, and then place the calibration bench 01 into the receiving seat 31 from the lateral opening. At this time, both the first angle plate 316 and the second angle plate 317 are in a state of rotating away from the inner cavity of the receiving seat 31, and there will be no interference when the calibration bench 01 is placed. After the calibration bench 01 is placed in place, rotate both the first angle plate 316 and the second angle plate 317 away from the inner cavity of the receiving seat 31, so that one side of the first angle plate 316 and one side of the second angle plate 317 both extend into the gap 11, and the two together form a flat support platform 318. The calibration bench 01 is arranged in the receiving seat 31 and located on the bottom plate 311, and the measurement and control box 02 is arranged in the gap 11 and located on the support platform 318. At this time, the erected ends of the first angle plate 316 and the second angle plate 317 can serve as a set of opposite side baffles of the measurement and control box 02 to prevent it from falling.

[0025] The present invention utilizes the structural characteristics of the calibration bench 01 itself to design the receiving seat 31 to simultaneously accommodate the calibration bench 01 and the measurement and control box 02, uses the walking wheel assembly to achieve walking, and uses the two-way pull handle 32 to achieve two-way pulling, improving the portability of the portable gas relay calibrator of the present invention.

[0026] As another embodiment of the present invention, the walking wheel assembly includes a first wheel assembly 33 and a second wheel assembly 34 arranged at an interval from the first wheel assembly 33. The first wheel assembly 33 and the second wheel assembly 34 are symmetric structures. The first wheel assembly 33 includes a wheel shaft 1, rollers 2, snap rings 3, support shafts 4, springs 5, bodies 6, and seat bodies 7. There are two rollers 2 and they are respectively arranged on both sides of the wheel shaft 1. There are two springs 5 and they are respectively sleeved outside the support shafts 4. There are two bodies 6 and they are respectively arranged at the ends of the support shafts 4 away from the wheel shaft 1. There are two snap rings 3 and they are respectively arranged at the ends of the support shafts 4 close to the wheel shaft 1. The snap rings 3 are circular and sleeved outside the wheel shaft 1. There are two seat bodies 7 and they are respectively fixed on the long first plate 314 and the long second plate 315. The seat bodies 7 are provided with guide holes 71 for the support shafts 4 to pass through and restricting the bodies 6 from passing through.

[0027] In this embodiment, the axle 1 and the receiving seat 31 are elastically connected. Therefore, when the portable gas relay calibrator of the present invention walks on rough roads, it has good buffering and shock-absorbing effects and can adapt to places with large slopes.

[0028] The walking wheel assembly further includes two vertical guiding units respectively arranged on the long first plate 314 and the long second plate 315. The vertical guiding unit includes a vertically arranged first longitudinal rod 8, a first inclined rod 9 and a second inclined rod 10 symmetrically arranged below the first longitudinal rod 8, a guide wheel 011 arranged above the first longitudinal rod 8, and two guide grooves 012 respectively fixed on the long first plate 314 and the long second plate 315. The guide wheel 011 is received in the guide groove 012. One end of the first inclined rod 9 far from the longitudinal rod is fixed to a snap ring 3 in the first wheel assembly 33, and one end of the second inclined rod 10 far from the longitudinal rod is fixed to a snap ring 3 in the second wheel assembly 34. The inclination angle of the first inclined rod 9 with the horizontal plane is 12-27°. The guide groove 012 is in a "U" shape with an upward opening. The first inclined rod 9 and the second inclined rod 10 are used to improve the stability of the walking wheel assembly. The first inclined rod 9 and the second inclined rod 10 are symmetrically inclined structures, which is beneficial for the portable gas relay calibrator of the present invention to walk on uneven roads with more sand, gravel and soil piles, and can effectively avoid the situation that the walking wheel assembly is blocked by sand, gravel and soil piles.

[0029] Compared with the related technology, for the portable gas relay calibrator of the present invention, by using the structural characteristics of the calibration table itself, the receiving seat is designed to simultaneously accommodate the calibration table and the measurement and control box, the walking is realized by using the walking wheel assembly, and the two-way pulling is realized by using the two-way pull handle, which improves the portability of the portable gas relay calibrator of the present invention. The walking assembly has an elastic buffering function and can walk on rough roads with various slopes to meet the on-site use requirements.

[0030] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent embodiments or changes made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

[0031] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. The narrative way of this specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A portable gas relay calibrator, comprising a calibration bench and a measurement and control box, characterized in that, The portable gas relay calibrator further includes a portable base. The portable base includes a receiving seat with an open top. A walking wheel assembly is provided below the receiving seat. Two pull handles are respectively provided at both ends of the walking wheel assembly. The receiving seat includes: a bottom plate in the shape of a rectangular plate, a first wide plate, a second wide plate, a first long plate, and a second long plate that respectively extend upward from the periphery of the bottom plate. The first wide plate and the second wide plate are arranged opposite to each other. The first long plate and the second long plate are arranged opposite to each other. The receiving seat further includes: a first corner plate in the shape of a right-angle plate as a whole, and a second corner plate in the shape of a right-angle plate as a whole. There is a gap with an open top in the upper part of the calibration table. A first notch penetrating through it is provided at the upper part of the first long plate at a position facing the gap. The first notch is rectangular. A second notch penetrating through it is provided at the upper part of the second long plate at a position facing the gap. The second notch is rectangular. The first corner plate is hinged at the first notch and the rotation angle of the first corner plate relative to the first long plate is 90°. The second corner plate is hinged at the second notch and the rotation angle of the second corner plate relative to the second long plate is 90°. One side of the first corner plate and one side of the second corner plate both extend into the gap and jointly form a planar support platform. The erected ends of the first corner plate and the second corner plate serve as a set of opposite side baffles of the measurement and control box. The calibration table is arranged in the receiving seat and located on the bottom plate. The measurement and control box is arranged in the gap and located on the support platform; The first corner plate is hinged at the first notch through a 90° rotating hinge, and the second corner plate is hinged at the second notch through a 90° rotating hinge; The second wide plate is hinged to the bottom plate; The pull handle includes a fixed end and a movable end. The fixed end is fixed to the walking wheel assembly, and the movable end is hinged to one end of the fixed end away from the walking wheel assembly; Blocking strips are respectively provided at opposite ends of the support platform; The portable base further includes a top cover in the shape of a cover structure covering the receiving seat; The walking wheel assembly includes a first wheel assembly and a second wheel assembly arranged at an interval from the first wheel assembly. The first wheel assembly and the second wheel assembly are symmetric structures. The first wheel assembly includes a wheel shaft, rollers, snap rings, support shafts, springs, bodies, and seat holders. There are two rollers respectively arranged on both sides of the wheel shaft. There are two springs respectively sleeved outside the support shafts. There are two bodies respectively arranged at one end of the support shaft away from the wheel shaft. There are two snap rings respectively arranged at one end of the support shaft close to the wheel shaft. The snap rings are circular and sleeved outside the wheel shaft. There are two seat holders respectively fixed on the first long plate and the second long plate. The seat holders are provided with guide holes for the support shafts to pass through and restricting the bodies from passing through.

2. The portable gas relay calibrator according to claim 1, wherein The walking wheel assembly further includes two vertical guiding units respectively arranged on the first long plate and the second long plate. The vertical guiding unit includes a vertically arranged first longitudinal rod, a first inclined rod and a second inclined rod symmetrically arranged below the first longitudinal rod, a guiding wheel arranged above the first longitudinal rod, and two guiding grooves respectively fixed on the first long plate and the second long plate. The guiding wheel is received in the guiding groove. One end of the first inclined rod far away from the longitudinal rod is fixed to a snap ring in the first wheel assembly, and one end of the second inclined rod far away from the longitudinal rod is fixed to a snap ring in the second wheel assembly.

3. The portable gas relay calibrator according to claim 2, wherein, The inclination angle of the first inclined rod with respect to the horizontal plane is 12-27°.

4. The portable gas relay calibrator according to claim 3, wherein The guiding groove is in a "U" shape with an upward opening.

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