CN111426948A - Portable gas relay calibrator - Google Patents

Abstract

The invention belongs to the technical field of transformer gas relay calibration devices, and discloses a portable gas relay calibration instrument which comprises a calibration table, a measurement and control box and a portable base, wherein the portable base comprises an accommodating seat with an opening at the upper part, a walking wheel assembly is arranged below the accommodating seat, two ends of the walking wheel assembly are respectively provided with two pull handles, and the accommodating seat comprises: the plate comprises a rectangular plate-shaped bottom plate, a first wide plate, a second wide plate, a first long plate and a second long plate, wherein the first wide plate, the second wide plate, the first long plate and the second long plate extend upwards from the periphery of the bottom plate respectively. Compared with the prior art, the portable gas relay calibrator has the advantages that the structural characteristics of the calibration bench are utilized, the accommodating seat is designed to accommodate the calibration bench and the measurement and control box at the same time, the walking wheel assembly is utilized to realize walking, the bidirectional pull handle is utilized to realize bidirectional pulling, the portability of the portable gas relay calibrator is improved, the walking assembly has an elastic buffer function, and can walk on rugged road sections with various gradients, so that the field use requirements are met.

Description

Portable gas relay calibrator

Technical Field

The invention belongs to the technical field of transformer gas relay calibration devices, and particularly relates to a portable gas relay calibration instrument.

Background

The gas relay calibrator is mainly used for detecting and calibrating a relay on an oil-immersed power transformer, and achieves the purpose of quantitatively testing a flow velocity value and a volume value by simulating the action mechanism of the relay during the fault in the transformer and matching with a computer measurement and control technology and a signal acquisition technology. Because gas relay check gauge self weight is heavier, the structure of gas relay check gauge among the relevant art by simple brace table or support frame, consequently is unfavorable for carrying, and carries more difficultly in remote rugged road section.

Therefore, there is a need to provide a new portable buchholz relay tester to solve the above-mentioned technical problems.

Disclosure of Invention

The invention aims to solve the technical problem that the defects in the prior art are overcome, and discloses a portable gas relay calibrator which is convenient to carry, can walk on a remote rugged road section and is beneficial to field use.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a portable buchholz relay check gauge, includes check table and survey and control box, portable buchholz relay check gauge still includes portable base, portable base includes upper portion open-ended accepts the seat, it is equipped with the walking wheel subassembly to accept the seat below, the both ends of walking wheel subassembly are equipped with two respectively and draw the handle, it includes to accept the seat: the base plate of rectangular plate form, by the first board of width, the width that upwards extends respectively of the periphery of base plate, width to the second board, length to first board, length to the second board, the first board of width sets up with the width is relative to the second board, the first board of length sets up with the length is relative to the second board, accept the seat and still include: the checking platform comprises a first angle plate and a second angle plate, wherein the first angle plate is integrally in a right-angle plate shape, the upper part of the checking platform is provided with a gap with an opening at the upper part, a first notch penetrating through the first angle plate is arranged at the position, facing the equipment gap, of the upper part of the first plate in the length direction, the first notch is rectangular, a second notch penetrating through the second angle plate is arranged at the position, facing the equipment gap, of the upper part of the second plate in the length direction, the second notch is rectangular, the first angle plate is hinged at the first notch, the rotating angle of the first angle plate relative to the first plate in the length direction is 90 degrees, the second angle plate is hinged at the second notch, the rotating angle of the second angle plate relative to the second plate in the length direction is 90 degrees, one edge part of the first angle plate and one edge part of the second angle plate both extend into the gap and form a supporting platform with a plane structure together, the checking platform is arranged in the accommodating seat and positioned on the bottom plate, and the measurement and control box is arranged in the gap and arranged on the supporting platform.

Preferably, the first angle plate is hinged to the first notch through a 90-degree rotating hinge, and the second angle plate is hinged to the second notch through a 90-degree rotating hinge.

Preferably, the second plate in the width direction is hinged to the bottom plate.

Preferably, the pull handle comprises 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, far away from the walking wheel assembly, of the fixed end.

Preferably, the two opposite ends of the supporting platform are respectively provided with a barrier strip.

Preferably, the portable base further includes a top cover covering the accommodation seat and having a cover-like structure as a whole.

Preferably, the walking wheel assembly comprises a first wheel assembly and a second wheel assembly arranged at a distance from the first wheel assembly, the first wheel component and the second wheel component are of symmetrical structures, the first wheel component comprises a wheel shaft, a roller, a clamping ring, a supporting shaft, a spring, a clamping body and a clamping seat, the two rollers are respectively arranged at the two sides of the wheel shaft, the two springs are respectively sleeved outside the supporting shaft, the two clamping bodies are respectively arranged at one end of the supporting shaft far away from the wheel shaft, the two clamping rings are respectively arranged at one end of the supporting shaft near the wheel shaft, the clamping rings are annular and are sleeved outside the wheel shafts, the two clamping seats are respectively fixed on the longitudinal first plate and the longitudinal second plate, the clamping seat is provided with a guide hole for the support shaft to pass through and limiting the clamping body to pass through.

Preferably, the walking wheel subassembly is still including locating respectively long to the first board with two vertical guide units on the long to the second board, vertical guide unit includes the first vertical pole of vertical setting, the symmetry is located first down tube and the second down tube of first vertical pole below, locate the guide pulley of first vertical pole top, be fixed in respectively long to the first board with two guide slots on the long to the second board, the guide pulley accept in the guide slot, keeping away from of first down tube the one end of vertical pole with a snap ring in the first wheel subassembly is fixed, keeping away from of second down tube the one end of vertical pole with a snap ring in the second wheel subassembly is fixed.

Preferably, the angle of inclination of the first inclined rod with the horizontal plane is 12-27 degrees.

Preferably, the guide groove is in a U shape with an upward opening.

Compared with the prior art, the portable gas relay calibrator disclosed by the invention has the advantages that the self structural characteristics of the calibration console are utilized, the accommodating seat is designed to simultaneously accommodate the calibration console and the measurement and control box, the walking wheel assembly is utilized to realize walking, and the bidirectional pull handle is utilized to realize bidirectional pulling, so that the portability of the portable gas relay calibrator disclosed by the invention is improved, the walking assembly has an elastic buffer function, can walk on rugged road sections with various gradients, and meets the field use requirements.

Drawings

Fig. 1 is a perspective view of a portable buchholz relay calibrator of the present invention;

FIG. 2 is a front view of a portable gas relay calibrator of the present invention;

FIG. 3 is a front sectional view of a portable buchholz relay calibrator of the present invention;

fig. 4 is a left side sectional view of a portable buchholz relay calibrator of the present invention.

In the figure:

01. the checking table comprises a checking table body 02, a measuring and controlling box 03, a portable base 11, a gap 31, a containing seat 32, a pull handle 33, a first wheel assembly 34, a second wheel assembly 311, a bottom plate 312, a first wide plate 313, a second wide plate 314, a first long plate 315, a second long plate 316, a first angle plate 317, a second angle plate 318, a supporting platform 319, a hinge 320, a blocking strip 321, a fixed end 322, a movable end 100, a first notch 100, a second notch 200, a wheel shaft 1, a roller 2, a snap ring 3, a supporting shaft 4, a spring 5, a clamping body 6, a clamping seat 7, a clamping seat 8, a first longitudinal rod 9, a first inclined rod 10, a second inclined rod 011, a guide wheel 012, a guide groove 71 and a guide hole.

Detailed Description

The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.

Referring to fig. 1-4, a portable buchholz relay calibrator includes a calibration stand 01 and a measurement and control box 02, and further includes a portable base 03, the portable base 03 includes an upper opening accommodating seat 31, a traveling wheel assembly is disposed below the accommodating seat 31, two ends of the traveling wheel assembly are respectively provided with two pull handles 32, and the accommodating seat 31 includes: a rectangular plate-shaped bottom plate 311, a first wide plate 312, a second wide plate 313, a first long plate 314, and a second long plate 315 extending upward from the periphery of the bottom plate 311, the first wide plate 312 and the second wide plate 313 being disposed opposite to each other, the first long plate 314 and the second long plate 315 being disposed opposite to each other, the housing 31 further comprising: the checking platform 01 is provided with a gap 11 with an opening at the upper part, a first notch 100 penetrating through the gap 11 is arranged at the position, opposite to the equipment gap 11, of the upper part of the long first plate 314, the first notch 100 is rectangular, a second notch 200 penetrating through the gap 11 is arranged at the position, opposite to the equipment gap 11, of the upper part of the long second plate 315, the second notch 200 is rectangular, the first corner plate 316 is hinged at the first notch 100, the rotating angle of the first corner plate 316 relative to the long first plate 314 is 90 degrees, the second corner plate 317 is hinged at the second notch 200, and the rotating angle of the second corner plate 317 relative to the long second plate 315 is 90 degrees. The widthwise second plate 313 is hingedly connected to the bottom plate 311. More specifically, the first corner plate 316 is hinged at the first notch 100 by a 90 ° rotation hinge 319, and the second corner plate 317 is hinged at the second notch 200 by a 90 ° rotation hinge 319. The range of rotation of the first corner plate 316 and the second corner plate 317 is limited by the 90 ° rotation hinge 319. The pull handle 32 comprises a fixed end 321 and a movable end 322, the fixed end 321 is fixed with the walking wheel assembly, and the movable end 322 is hinged with one end of the fixed end 321 far away from the walking wheel assembly. More specifically, the opposite ends of the supporting platform 318 are respectively provided with a barrier 320. The barrier strips 320 serve as another set of opposite side baffles of the measurement and control box 02 to prevent the measurement and control box 02 from sliding in the front-back direction. The portable base 03 further includes a top cover of a cover-like structure covering the accommodation seat 31.

The invention relates to a portable gas relay calibrator, which is special equipment for a gas relay flow velocity fixed value and a volume value for a power transformer, wherein a micro control technology is adopted, and the flow velocity fixed value is calculated by an instantaneous explosion pulse pressure method when a transformer internal fault is simulated by detecting a high-precision pressure sensor so as to achieve the aim of detecting heavy gas protection action of the gas relay; the volume value of light gas is calculated by adopting a method of combining a precision container with a micro-pressure sensor and detecting the volume of liquid discharged from the interior of the gas relay. The calibration console 01 is used for providing an experimental test platform, and the test control box 02 is used for integrating micro-control equipment. When the portable gas relay calibrator is used, the second plate 313 in the width direction is rotated and opened around the position hinged with the bottom plate 311 to form a lateral opening, the calibration table 01 is placed into the accommodating seat 31 from the lateral opening, at the moment, the first angle plate 316 and the second angle plate 317 are both in a state of rotating in the direction far away from the inner cavity of the accommodating seat 31, and interference cannot be caused when the calibration table 01 is placed. After the calibration stand 01 is placed in place, the first corner plate 316 and the second corner plate 317 are rotated towards a direction away from the inner cavity of the containing seat 31, so that one edge of the first corner plate 316 and one edge of the second corner plate 317 both extend into the gap 11 and form a supporting platform 318 with a planar structure, the calibration stand 01 is arranged in the containing seat 31 and located on the bottom plate 311, the measurement and control box 02 is arranged in the gap 11 and located on the supporting platform 318, and at the moment, the erected ends of the first corner plate 316 and the second corner plate 317 can be used as a group of opposite two side baffles of the measurement and control box 02 to avoid falling.

The invention utilizes the structural characteristics of the calibration console 01, designs the accommodating seat 31 to simultaneously accommodate the calibration console 01 and the measurement and control box 02, utilizes the walking wheel component to realize walking, and utilizes the bidirectional pull handle 32 to realize bidirectional pulling, thereby improving the portability of the portable gas relay calibrator.

As another embodiment of the present invention, the walking wheel assembly includes a first wheel assembly 33 and a second wheel assembly 34 spaced apart from the first wheel assembly 33, the first wheel assembly 33 and the second wheel assembly 34 are symmetrical structures, the first wheel assembly 33 includes an axle 1, a roller 2, a snap ring 3, a support shaft 4, spring 5, the card body 6, cassette 7, gyro wheel 2 is two and locates the both sides of shaft 1 respectively, spring 5 is two and overlaps respectively and locates outside back shaft 4, card body 6 is two and locates the one end of keeping away from shaft 1 of back shaft 4 respectively, snap ring 3 is two and locates the one end that is close to shaft 1 of back shaft 4 respectively, snap ring 3 is the ring form and overlaps and locate outside shaft 1, cassette 7 is two and is fixed in respectively on long to first board 314 and the long to second board 315, be equipped with the guiding hole 71 that is used for back shaft 4 to pass and restricts card body 6 to pass on the cassette 7.

In the present embodiment, the wheel axle 1 is elastically connected to the accommodating seat 31, so that the portable buchholz relay calibrator has good buffering and damping effects when walking on a rugged road, and can adapt to places with large gradients.

The walking wheel assembly further comprises two vertical guide units respectively arranged on the longitudinal first plate 314 and the longitudinal second plate 315, each vertical guide unit comprises a first vertical rod 8 which is vertically arranged, a first inclined rod 9 and a second inclined rod 10 which are symmetrically arranged below the first vertical rod 8, a guide wheel 011 arranged above the first vertical rod 8 and two guide grooves 012 which are respectively fixed on the longitudinal first plate 314 and the longitudinal second plate 315, the guide wheel 011 is contained in the guide grooves 012, one end of the first inclined rod 9 far away from the vertical rods is fixed with a clamping ring 3 in the first wheel assembly 33, and one end of the second inclined rod 10 far away from the longitudinal rods is fixed with a clamping ring 3 in the second wheel assembly 34. The angle of inclination of the first diagonal member 9 to the horizontal is 12-27 deg.. The guide groove 012 has an upward opening "U" shape. The first diagonal bar 9 and the second diagonal bar 10 are used to improve the stability of the road wheel assembly. The first inclined rod 9 and the second inclined rod 10 are symmetrically inclined structures, so that the portable gas relay calibrator disclosed by the invention can walk on uneven road sections with more sand and stone soil piles, and the condition that the walking wheel assembly is propped by the sand and stone soil piles can be effectively avoided.

Compared with the prior art, the portable gas relay calibrator disclosed by the invention has the advantages that the self structural characteristics of the calibration console are utilized, the accommodating seat is designed to simultaneously accommodate the calibration console and the measurement and control box, the walking wheel assembly is utilized to realize walking, and the bidirectional pull handle is utilized to realize bidirectional pulling, so that the portability of the portable gas relay calibrator disclosed by the invention is improved, the walking assembly has an elastic buffer function, can walk on rugged road sections with various gradients, and meets the field use requirements.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. The utility model provides a portable buchholz relay check gauge, includes check table and survey and control case, its characterized in that, portable buchholz relay check gauge still includes portable base, portable base includes that upper portion open-ended accepts the seat, it is equipped with the walking wheel subassembly to accept the seat below, the both ends of walking wheel subassembly are equipped with two respectively and draw the handle, it includes to accept the seat: the base plate of rectangular plate form, by the first board of width, the width that upwards extends respectively of the periphery of base plate, width to the second board, length to first board, length to the second board, the first board of width sets up with the width is relative to the second board, the first board of length sets up with the length is relative to the second board, accept the seat and still include: the checking platform comprises a first angle plate and a second angle plate, wherein the first angle plate is integrally in a right-angle plate shape, the upper part of the checking platform is provided with a gap with an opening at the upper part, a first notch penetrating through the first angle plate is arranged at the position, facing the equipment gap, of the upper part of the first plate in the length direction, the first notch is rectangular, a second notch penetrating through the second angle plate is arranged at the position, facing the equipment gap, of the upper part of the second plate in the length direction, the second notch is rectangular, the first angle plate is hinged at the first notch, the rotating angle of the first angle plate relative to the first plate in the length direction is 90 degrees, the second angle plate is hinged at the second notch, the rotating angle of the second angle plate relative to the second plate in the length direction is 90 degrees, one edge part of the first angle plate and one edge part of the second angle plate both extend into the gap and form a supporting platform with a plane structure together, the checking platform is arranged in the accommodating seat and positioned on the bottom plate, and the measurement and control box is arranged in the gap and arranged on the supporting platform.

2. The portable buchholz relay calibrator according to claim 1, wherein the first corner plate is hinged to the first notch by a 90 ° rotation hinge, and the second corner plate is hinged to the second notch by a 90 ° rotation hinge.

3. The portable buchholz relay verifier according to claim 2, wherein the second broad plate is hingedly connected to the base plate.

4. The portable buchholz relay calibrator according to claim 3, wherein the pull handle comprises a fixed end and a movable end, the fixed end is fixed to the traveling wheel assembly, and the movable end is hinged to one end of the fixed end, which is far away from the traveling wheel assembly.

5. The portable buchholz relay calibrator according to claim 4, wherein the opposite ends of the support platform are provided with barrier strips, respectively.

6. The portable buchholz relay calibrator according to any one of claims 1 to 5, wherein the portable base further comprises a top cover of an integral cover-like structure covering the receptacle.

7. The portable gas relay calibrator according to claim 6, wherein the traveling wheel assembly comprises 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 of symmetrical structures, the first wheel assembly comprises two wheels, two rollers, two snap rings, a support shaft, springs, two clamping bodies and two clamping seats, the two rollers are respectively disposed on two sides of the wheels, the two springs are respectively sleeved outside the support shaft, the two clamping bodies are respectively disposed on one end of the support shaft away from the wheels, the two snap rings are respectively disposed on one end of the support shaft close to the wheels, the two snap rings are annular and sleeved outside the wheels, the two clamping seats are respectively fixed on the longitudinal first plate and the longitudinal second plate, the clamping seat is provided with a guide hole for the support shaft to pass through and limiting the clamping body to pass through.

8. The portable gas relay calibrator according to claim 7, wherein the traveling wheel assembly further comprises two vertical guide units respectively disposed on the first longitudinal plate and the second longitudinal plate, each vertical guide unit comprises a first longitudinal rod vertically disposed, a first diagonal rod and a second diagonal rod symmetrically disposed below the first longitudinal rod, a guide wheel disposed above the first longitudinal rod, and two guide grooves respectively fixed to the first longitudinal plate and the second longitudinal plate, the guide wheel is accommodated in the guide groove, one end of the first diagonal rod, which is far away from the longitudinal rod, is fixed to a snap ring in the first wheel assembly, and one end of the second diagonal rod, which is far away from the longitudinal rod, is fixed to a snap ring in the second wheel assembly.

9. The portable buchholz relay calibrator according to claim 8, wherein the inclination angle of the first inclined bar with respect to the horizontal plane is 12-27 °.

10. The portable buchholz relay calibrator according to claim 9, wherein the guide groove is in a "U" shape with an upward opening.

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