CN111554538B - General type SF6 aerifys test joint - Google Patents
General type SF6 aerifys test joint Download PDFInfo
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- CN111554538B CN111554538B CN202010384845.0A CN202010384845A CN111554538B CN 111554538 B CN111554538 B CN 111554538B CN 202010384845 A CN202010384845 A CN 202010384845A CN 111554538 B CN111554538 B CN 111554538B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- Manufacturing & Machinery (AREA)
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a universal SF6 inflation test joint which comprises a clamping unit, a translation unit and a butt joint unit, wherein the translation unit is arranged below the clamping unit, and the butt joint unit is matched with the translation unit. The whole device is fixed on a pipeline joint on the testing equipment by the clamping unit, the translation unit can move to enable the butt joint unit to be aligned to the pipeline joint, SF6 inflation and deflation are carried out through the first butt joint piece and the second butt joint piece, and the air pipe is connected with the bottom end of the second butt joint piece. The device changes the existing fastening mode of threaded connection between connectors with adaptive sizes, one test connector can be butted with SF6 equipment of various models, the application range is wide, the working efficiency is improved, and the working complexity is reduced.
Description
Technical Field
The invention relates to the technical field of test and maintenance, in particular to a universal SF6 gas-filled test joint.
Background
Sulfur hexafluoride is a stable gas which is colorless, odorless, nontoxic and noncombustible, SF6 is a strong electronegative gas, molecules of the sulfur hexafluoride are easy to adsorb free electrons to form negative ions with large mass, and the collision ionization process in the gas is weakened, so that the sulfur hexafluoride has high electrical insulation strength which is about 2.5 times of the air insulation strength in a uniform electric field. Since SF6 gas has excellent arc extinguishing and insulating properties and good chemical stability, it was used as an arc extinguishing medium for high voltage circuit breakers since the end of the 50 th century. In the ultra-high voltage and extra-high voltage circuit breakers, SF6 has replaced oil as an arc extinguishing medium and has largely replaced compressed air. From the middle of the 60 s, SF6 is widely used as an insulation medium for high voltage electrical equipment. SF6 gas insulated, fully enclosed switchgear occupies a much smaller area than conventional open high voltage switchgear and its operation is not affected by external weather and environmental conditions, and thus has come into widespread use not only in ultra-high voltage and extra-high voltage power systems, but also in distribution networks (SF6 gas insulated switchgears and ring network power supply units). The SF6 gas insulated pipeline transmission line has the advantages of small medium loss and large transmission capacity, and can be used in high-drop occasions, thus being commonly used for outlet of hydropower stations to replace conventional oil-filled cables. SF6 gas-insulated transformers have the advantage of being fire and explosion proof, and are particularly suitable for use in densely populated areas and for supplying power to high-rise buildings.
At present, in the process of pre-testing or fault emergency repair of power equipment such as an SF6 circuit breaker, a current transformer, a GIS air chamber and the like, works such as SF6 gas charging and discharging, SF6 gas humidity and decomposition product testing, SF6 density relay checking and the like are usually carried out, the works all need to connect the air chamber with a pipeline joint on testing equipment through an inflation test joint so as to achieve the purpose of communication, and due to the fact that SF6 equipment is numerous in brand models and types, the types of the pipeline joint are also different (more than ten types of joints are commonly used, including Siemens, ABB, Alston, Western-style, side-hung, Tai-style, like the Gao and the like), the inflation test joint corresponding to the size of the pipeline joint is required to be frequently replaced in the working process, the corresponding inflation test joints are also very many, the application range is small, the working efficiency is reduced, and the working complexity is increased.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above and/or other problems with existing SF6 gas fill test joints.
Therefore, the problem to be solved by the invention is how to improve the universality of the SF6 gas filling test joint.
In order to solve the technical problems, the invention provides the following technical scheme: the general SF6 gas-filled test joint comprises a clamping unit, a gas-filled test joint and a gas-filled test joint, wherein the clamping unit comprises a positioning seat, a positioning block sliding on the positioning seat, and a clamping piece matched with the positioning seat, and one end of the clamping piece is in contact with the positioning block; the translation unit is arranged below the clamping unit and comprises a connecting rod in sliding fit with the side face of the positioning seat, a cylinder fixedly connected with the bottom end of the connecting rod and a first nut matched with the bottom end of the cylinder; and the butt joint unit is matched with the translation unit and comprises a first butt joint piece in threaded fit with the first nut and a second butt joint piece in threaded fit with the first butt joint piece.
As a preferable embodiment of the general type SF6 inflation test connector of the present invention, wherein: the positioning seat comprises a first hole which is vertically arranged, a first clamping part which is arranged corresponding to the first hole, two counter bore second holes which are arranged at the same side of the positioning seat, a third hole which is arranged in the middle of the second holes, and a T-shaped groove which is arranged on the side face of the positioning seat; the third hole is provided with the internal thread, T type recess bottom is provided with first sawtooth.
As a preferable embodiment of the general type SF6 inflation test connector of the present invention, wherein: the positioning block is provided with a second clamping part matched with the first clamping part.
As a preferable embodiment of the general type SF6 inflation test connector of the present invention, wherein: the clamping member includes a reset member that is threadably engaged with the second aperture and a threaded rod that is threadably engaged with the third aperture.
As a preferable embodiment of the general type SF6 inflation test connector of the present invention, wherein: the piece that resets include with the first cylinder of second hole complex, and set up in the spring between first cylinder and the second hole.
As a preferable embodiment of the general type SF6 inflation test connector of the present invention, wherein: the clamping piece further comprises a handle arranged at one end of the threaded rod.
As a preferable embodiment of the general type SF6 inflation test connector of the present invention, wherein: the top end of the connecting rod is provided with a T-shaped block matched with the T-shaped groove, and the bottom end of the T-shaped block is provided with second sawteeth matched with the first sawteeth.
As a preferable embodiment of the general type SF6 inflation test connector of the present invention, wherein: the bottom of the cylinder is provided with an annular groove, and the first nut is provided with a boss matched with the annular groove.
As a preferable embodiment of the general type SF6 inflation test connector of the present invention, wherein: the first butt joint piece comprises an umbrella-shaped bulge arranged at the top, a second nut arranged at the bottom and a sealing sleeve matched with the umbrella-shaped bulge; the first butt joint piece is provided with internal threads, and the sealing sleeve is made of rubber.
As a preferable embodiment of the general type SF6 inflation test connector of the present invention, wherein: the second butt joint piece including set up in the thimble on top, set up in the third nut of bottom, and set up in the peripheral fourth hole of thimble.
The invention has the advantages that the conventional fastening mode of threaded connection between the connectors with adaptive sizes is changed, one test connector can be butted with SF6 equipment with various models, the application range is wide, the working efficiency is improved, and the working complexity is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a schematic view of a general SF6 inflation test fitting of example 1.
Fig. 2 is a cross-sectional view of a generic SF6 inflation test fitting of example 1.
FIG. 3 is a block diagram of a generic SF6 gas charge test fitting of example 1.
Fig. 4 is a cross-sectional view of the clamping unit and the translating unit of the general SF6 inflation test fitting of example 1.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 4, a first embodiment of the present invention provides a general-purpose SF6 inflation test connector, where the general-purpose SF6 inflation test connector includes a clamping unit 100, a translation unit 200, and a docking unit 300, the translation unit 200 is disposed below the clamping unit 100, and the docking unit 300 is engaged with the translation unit 200. The clamping unit 100 fixes the whole device on a pipeline joint on a test device, the translation unit 200 can move to enable the docking unit 300 to be aligned with the pipeline joint, SF6 inflation and deflation are carried out through the first docking piece 301 and the second docking piece 302, and an air pipe is connected with the bottom end of the second docking piece 302.
For the convenience of the subsequent structural description, the three-dimensional space in which the general SF6 gas-filled test joint is defined has three orthogonal directions, namely a longitudinal direction, a transverse direction and a vertical direction. Wherein, the movable direction of the translation unit 200 is taken as the transverse direction; the other horizontal direction vertical to the transverse direction is a longitudinal direction; the vertical direction is vertical.
Specifically, the clamping unit 100 includes a positioning seat 101, a positioning block 102 sliding on the positioning seat 101, and a clamping member 103 engaged with the positioning seat 101, wherein one end of the clamping member 103 is in contact with the positioning block 102. The positioning seat 101 is longitudinally provided with a groove, and the positioning block 102 is arranged in the groove to slide. The positioning seat 101 comprises a first hole 101a which is vertically arranged, a first clamping part 101b which is arranged corresponding to the first hole 101a, two counter bore second holes 101c which are arranged on the same side of the positioning seat 101, a third hole 101d which is arranged in the middle of the second hole 101c, and a T-shaped groove 101e which is arranged on the side surface of the positioning seat 101; the third hole 101d is provided with an internal thread, and the bottom end of the T-shaped groove 101e is provided with a first sawtooth 101 e-1. The first hole 101a has a larger diameter than the first clamping portion 101b, and a pipe joint of the test equipment passes through the first hole 101 a. The middle position of the first clamping portion 101b is concave, and most of pipe joints on the testing equipment are cylindrical, so that the first clamping portion 101b needs to be capable of fitting cylinders with different diameters. The second holes 101c are transversely arranged and are counter bored holes, and the two second holes 101c are symmetrically arranged on the symmetry plane of the positioning seat 101. The positioning block 102 is provided with a second clamping portion 102a engaged with the first clamping portion 101b, the clamping member 103 includes a reset member 103a engaged with the second hole 101c, and a threaded rod 103b threadedly engaged with the third hole 101d, and the reset member 103a includes a first cylinder 103a-1 engaged with the second hole 101c, and a spring 103a-2 disposed between the first cylinder 103a-1 and the second hole 101 c. One end of the threaded rod 103b penetrates through the third hole 101d, so that the positioning block 102 can be pushed to move towards the first clamping portion 101b, and the other end of the threaded rod 103b is provided with a handle 103c, so that the threaded rod can be conveniently rotated by hands. One end of the first cylinder 103a-1 is fixed on the positioning block 102, the other end is disposed in the second hole 101c, the spring 103a-2 is a compression spring, when the threaded rod 103b pushes the positioning block 102 to move towards the first clamping portion 101b, the spring 103a-2 is compressed to generate an elastic force, and when the threaded rod 103b is screwed outwards, the positioning block 102 restores to an initial position under the elastic force of the spring 103 a-2. Preferably, the springs 103a-2 on either side of the threaded rod 103b have the same spring force.
The translation unit 200 comprises a connecting rod 201 in sliding fit with the side surface of the positioning seat 101, a cylinder 202 fixedly connected with the bottom end of the connecting rod 201, and a first nut 203 matched with the bottom end of the cylinder 202. Two connecting rods 201 are symmetrically arranged on the symmetrical plane of the positioning seat 101, a T-shaped block 201a matched with the T-shaped groove 101e is arranged at the top end of each connecting rod 201, and second sawteeth 201a-1 matched with the first sawteeth 101e-1 are arranged at the bottom end of each T-shaped block 201 a. It should be noted that the T-shaped groove 101e and the T-shaped block 201a do not exactly fit, but the T-shaped groove 101e is larger in the vertical direction, that is, the T-shaped block 201a can move up and down, that is, when the T-shaped block 201a moves up to the top end, the first sawtooth 101e-1 and the second sawtooth 201a-1 are separated, and the connecting rod 201 can move transversely; when the T-shaped block 201a moves down to the bottom end, the first saw tooth 101e-1 and the second saw tooth 201a-1 are engaged, and the connecting rod 201 cannot move. The bottom of the cylinder 202 is provided with an annular groove 202a, the first nut 203 is provided with a boss 203a matched with the annular groove 202a, the matching of the boss 203a and the annular groove 202a enables the first nut 203 to rotate relative to the cylinder 202, and the rotation of the first nut 203 enables the first butt-joint piece 301 in threaded fit with the first nut to move up and down.
The docking unit 300 comprises a first docking member 301 which is threadedly engaged with the first nut 203, and a second docking member 302 which is threadedly engaged with the first docking member 301. The first butt piece 301 comprises an umbrella-shaped protrusion 301a arranged at the top, a second nut 301b arranged at the bottom, and a sealing sleeve 301c matched with the umbrella-shaped protrusion 301 a; the first butt joint piece 301 is provided with internal threads, the sealing sleeve 301c is made of rubber, and the umbrella-shaped protrusion 301a is arranged to increase the area of the top end of the first butt joint piece 301 so that the first butt joint piece can be butted with pipeline joints with different diameters, and to increase air tightness, the first butt joint piece is butted with the pipeline joints through an inclined surface, and the air tightness is better. And through the arrangement of the sealing sleeve 301c, the air tightness of the first butt joint piece 301 and the pipeline joint during butt joint is further improved, and the butt joint is safer. The material of the sealing sleeve 301c is preferably rubber, and may be another material having flexibility and good airtightness. The second nut 301b is provided to prevent the first butt 301 from rotating by fixing the second nut 301b when the first nut 203 is rotated, and to damage the seal cover 301 c. The second butt joint piece 302 includes a thimble 302a disposed on the top end, a third nut 302b disposed on the bottom end, and a fourth hole 302c disposed on the periphery of the thimble 302 a. The thimble 302a is arranged because a valve core is arranged in the middle of the pipeline joint, SF6 gas flows out when the valve core is pressed, and the thimble 302a is arranged to press the valve core.
When the positioning seat is used, the positioning seat 101 is firstly sleeved on a pipeline joint, the pipeline joint penetrates through the first hole 101a, then the handle 103c is rotated, the threaded rod 103b pushes the positioning block 102 to move so as to clamp the pipeline joint, after the pipeline joint is clamped under the matching action of the first clamping part 101b and the second clamping part 102a, the connecting rod 201 is moved upwards, the first sawtooth 101e-1 and the second sawtooth 201a-1 are separated, the connecting rod 201 is moved transversely so that the cylinder 202 is basically positioned right below the pipeline joint, the connecting rod 201 is loosened, the second nut 301b is fixed by hand or tool while the connecting rod 201 is loosened, then the first nut 203 is rotated so that the umbrella-shaped bulge 301a with the sealing sleeve 301c is tightly attached to the bottom end of the pipeline joint, and then the third nut 302b is rotated so that the thimble 302a jacks up the valve core in the pipeline joint.
It should be noted that the rotation directions of the external threads of the first butt joint piece 301 and the second butt joint piece 302 are the same, that is, if the first butt joint piece 301 is lifted when the first butt joint piece 301 is rotated clockwise, the second butt joint piece 302 is also lifted when the first butt joint piece 301 is rotated clockwise.
It should be noted that the bottom end of the second docking member 302 is connected to the air tube. SF6 gas passes through the gap between umbrella-shaped protrusion 301a and thimble 302a and then through fourth hole 302c to connect to the gas pipe.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A general type SF6 aerifys experimental joint which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the clamping unit (100) comprises a positioning seat (101), a positioning block (102) sliding on the positioning seat (101), and a clamping piece (103) matched with the positioning seat (101), wherein one end of the clamping piece (103) is in contact with the positioning block (102);
the translation unit (200) is arranged below the clamping unit (100) and comprises a connecting rod (201) in sliding fit with the side surface of the positioning seat (101), a cylinder (202) fixedly connected with the bottom end of the connecting rod (201), and a first nut (203) matched with the bottom end of the cylinder (202); and the number of the first and second groups,
the docking unit (300) is matched with the translation unit (200) and comprises a first docking piece (301) in threaded fit with the first nut (203) and a second docking piece (302) in threaded fit with the first docking piece (301).
2. The universal SF6 gas filled test joint of claim 1, wherein: the positioning seat (101) comprises a first hole (101a) which is vertically arranged, a first clamping part (101b) which is arranged corresponding to the first hole (101a), two counter bore second holes (101c) which are arranged on the same side of the positioning seat (101), a third hole (101d) which is arranged in the middle of the second hole (101c), and a T-shaped groove (101e) which is arranged on the side surface of the positioning seat (101); the third hole (101d) is provided with an internal thread, and the bottom end of the T-shaped groove (101e) is provided with a first sawtooth (101 e-1).
3. The universal SF6 gas filled test joint of claim 2, wherein: the positioning block (102) is provided with a second clamping part (102a) matched with the first clamping part (101 b).
4. The universal SF6 gas test joint of claim 3, wherein: the clamping member (103) comprises a reset member (103a) cooperating with the second hole (101c), and a threaded rod (103b) in threaded cooperation with the third hole (101 d).
5. The universal SF6 gas test joint of claim 4, wherein: the reset piece (103a) comprises a first cylinder (103a-1) matched with the second hole (101c), and a spring (103a-2) arranged between the first cylinder (103a-1) and the second hole (101 c).
6. The universal SF6 gas injection test joint of claim 5, wherein: the clamping piece (103) further comprises a handle (103c) arranged at one end of the threaded rod (103 b).
7. The universal SF6 gas injection test joint of claim 6, wherein: the top end of the connecting rod (201) is provided with a T-shaped block (201a) matched with the T-shaped groove (101e), and the bottom end of the T-shaped block (201a) is provided with a second sawtooth (201a-1) matched with the first sawtooth (101 e-1).
8. The universal SF6 gas filled test joint of claim 7, wherein: an annular groove (202a) is formed in the bottom of the cylinder (202), and a boss (203a) matched with the annular groove (202a) is arranged on the first nut (203).
9. The general SF6 gas test joint of any of claims 5 to 8, wherein: the first butt joint piece (301) comprises an umbrella-shaped bulge (301a) arranged at the top, a second nut (301b) arranged at the bottom and a sealing sleeve (301c) matched with the umbrella-shaped bulge (301 a); the first butt joint piece (301) is provided with internal threads, and the sealing sleeve (301c) is made of rubber.
10. The universal SF6 inflation test connector of claim 9, wherein: the second butt joint piece (302) is including setting up in thimble (302a) on top, setting up in third nut (302b) of bottom to and set up in fourth hole (302c) of thimble (302a) periphery.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010384845.0A CN111554538B (en) | 2020-05-09 | 2020-05-09 | General type SF6 aerifys test joint |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010384845.0A CN111554538B (en) | 2020-05-09 | 2020-05-09 | General type SF6 aerifys test joint |
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| CN111554538A CN111554538A (en) | 2020-08-18 |
| CN111554538B true CN111554538B (en) | 2022-02-22 |
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| CN114110417A (en) * | 2021-11-15 | 2022-03-01 | 国网河南省电力公司宜阳县供电公司 | Charging and discharging fixing clamp for GIS combined electrical apparatus |
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| CN109968704A (en) * | 2019-04-30 | 2019-07-05 | 青岛科力达机械制造有限公司 | Clamping device and air charging system |
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| SG131861A1 (en) * | 2005-10-11 | 2007-05-28 | Millipore Corp | Methods and systems for integrity testing of porous materials |
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| CN202816776U (en) * | 2012-10-10 | 2013-03-20 | 辽宁省电力有限公司葫芦岛供电公司 | Sulfur hexachloride power circuit breaker aerating device |
| CN104141849B (en) * | 2013-11-13 | 2017-01-11 | 国家电网公司 | Gas charging connector and circuit breaker using same |
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