CN108872847A - The detection system of sulfur hexafluoride density relay - Google Patents
The detection system of sulfur hexafluoride density relay Download PDFInfo
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- CN108872847A CN108872847A CN201810865151.1A CN201810865151A CN108872847A CN 108872847 A CN108872847 A CN 108872847A CN 201810865151 A CN201810865151 A CN 201810865151A CN 108872847 A CN108872847 A CN 108872847A
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- cabinet
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- pressure
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- sulfur hexafluoride
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention discloses the detection system of sulfur hexafluoride density relay, can have more accurate verifying function, once with the calibration of the temperature compensation value of multiple groups density monitor and can recycle sulfur hexafluoride gas.The present invention includes verification component and high-low temperature test chamber；High-low temperature test chamber includes cabinet, refrigeration system, refrigeration system box, compressor, control module and electrical cabinet, the one side of cabinet is arranged in the electrical cabinet, control module and memory are provided in electrical cabinet, compressor and refrigeration system are provided in the refrigeration system box, the cabinet is divided into test cavity, return air channel and refrigeration system box by cavity of resorption bottom plate and test cavity side wall, it is provided with condenser, heater and centrifugal blower in the return air channel, is provided with air outlet and return air inlet on the test cavity side wall；The testing jig for being used to support density monitor and master gauge is placed on testing jig；The verification component includes controller.
Description
Technical field
The present invention relates to a kind of sulfur hexafluoride relay test, the calibration specifically for sulfur hexafluoride density relay is examined
It surveys.
Background technique
SF6 (sulfur hexafluoride) electric product has been widely used in power department, industrial and mining enterprises, promotes the fast of power industry
Speed development.How to guarantee that the reliable and secure operation of SF6 electric product has become one of vital task of power department.SF6 gas
Density monitor is one of the key element of SF6 electric switch, it is used to detect SF6 gas density is in SF6 electrical equipment ontology
Variation, its performance quality directly influences the reliable and secure operation of SF6 electrical equipment.The SF6 gas of installation on site is close
Relay is spent because infrequently acting, and after one period the phenomenon that often appearance movement not flexible or poor contact of contacts, is had
It there is also temperature-compensating performance variation, SF6 gas density is relay misoperation be easy to cause to make when variation of ambient temperature.Therefore
Periodically SF6 gas density is relay should be verified.From the point of view of practical operation situation, to the SF6 gas density is relay at scene
It is to prevent trouble before it happens that device, which carries out periodic check, ensures one of the necessary means of power equipment safety reliability service.In sealing container
In, the SF6 gas pressure under certain temperature can represent SF6 gas density is.In order to unified, traditionally often SF6 at 20 DEG C
Typical value of the pressure of gas as its corresponding density.So SF6 gas density is relay is with the pressure of SF6 gas at 20 DEG C
Power is as nominal value.
Current sulfur hexafluoride density relay tester has a single function, and either field-checking still concentrates verification, school
Experiment device can only judge to be by compareing contact variation and the indicating value of pressure sensor numerical value and density monitor to be verified
It is no accurate, without more accurate richer calibration function；At the same time, it was found that mistake in practical substation's maintenance work
Low temperature (subzero 30 DEG C or so) is easy to cause pointer sulfur hexafluoride density relay alarm (or locking), the prior art
In be all at the first time determine field failure, overhauled on a large scale, but in practice we found that, under partial picture finally
It is just the discovery that the temperature supplementary functions of sulfur hexafluoride density relay do not work, thus causes a large amount of time, people
Power and money waste；Therefore, correct detecting step should detect pointer sulfur hexafluoride density relay at the first time
Whether whether accurate and pointer sulfur hexafluoride density relay temperature-compensating is accurate；For pointer sulfur hexafluoride density
The detection of relay includes large number of equipment at present, after inflating particular by gas source, using high-precision sensor and sulfur hexafluoride
The pointer value of density monitor is compared；But for the detection of temperature compensation function currently without thus causing
The detection process of sulfur hexafluoride density relay is not perfect.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that it is close to disclose sulfur hexafluoride
The detection system for spending relay, can have more accurate verifying function, once can be with the temperature of multiple groups density monitor
The calibration of offset and sulfur hexafluoride gas can be recycled.
The technical solution adopted by the present invention to solve the technical problems is：The detection system of sulfur hexafluoride density relay,
Include verification component and high-low temperature test chamber；
High-low temperature test chamber includes cabinet, refrigeration system, refrigeration system box, compressor, control module and electrical cabinet, described
The one side of cabinet is arranged in electrical cabinet, and control module and memory are provided in electrical cabinet, is arranged in the refrigeration system box
There are compressor and refrigeration system, the cabinet is divided into test cavity, return air channel and refrigeration by cavity of resorption bottom plate and test cavity side wall
System cabine is provided with condenser, heater and centrifugal blower in the return air channel, is provided with outlet air on the test cavity side wall
Mouth and return air inlet, the centrifugal blower face air outlet setting, are arranged having heaters, institute between the centrifugal blower and condenser
It states condenser to be arranged above return air inlet, the centrifugal blower is connected to motor by transmission shaft；The test cavity medium position
It is provided with upper and lower cavity partition, test cavity is divided into epicoele and cavity of resorption, the upper and lower cavity partition and cavity of resorption by the upper and lower cavity partition
Plate upper surface middle position is respectively arranged with testing jig, and the upper and lower cavity partition bottom surface and box roof bottom surface are provided with
Chamber temperature sensor, upper and lower cavity partition were provided with air port far from test cavity side wall；
The testing jig for being used to support density monitor and master gauge is placed on the testing jig；Also comprising for wearing
The pipeline of communicating pipe is open, and pipeline opening is through-hole, and pipeline is provided on cabinet；Communicating pipe is by the outer of high-low temperature test chamber
Portion extends to the refrigeration system box of high-low temperature test chamber；One end that communicating pipe is located at outside high-low temperature test chamber is equipped with air inlet
Pipe, air inlet pipe are connected to the loading line of verification component；The one end for being located at the inside of high-low temperature test chamber the communicating pipe is in parallel
There are four supply branch；
The verification component includes controller, and controller connects touch display screen, density monitor to be verified and standard pressure
Power table；The verification component also includes loading line；Air reservoir, cylinder pressure sensing have been sequentially connected in series on the loading line
Device, proportioning valve；Verification pressure sensor and the adjusting cylinder for finely tuning air pressure are additionally provided on the loading line；
The gas outlet of the air reservoir connects the cylinder pressure sensors, and the air inlet of air reservoir has by piping connection
Verify temperature sensor, air compressor machine and filter；It is provided on the corresponding verification shell of filters locations for being supplied for air reservoir
The connection air-path interface for gas bottle of gas；Four above-mentioned gas supply branches in parallel on the loading line；The gas supply branch
On intake valve and corresponding density monitor to be verified or master gauge are installed；All gas supply branches are also connected to simultaneously
On exhaust apparatus；The exhaust apparatus includes exhaust valve；The exhaust valve and recycling gas cylinder pass through piping connection；The recycling gas
The pressure of bottle is greater than the pressure of air reservoir lower than the pressure on the pipeline of exhaust valve, the pressure for gas bottle.
As a kind of preferred embodiment of the invention：Upper and lower cavity partition two sides are provided with protrusion, corresponding, case
Be arranged on body and test cavity side wall it is fluted, protrusion and groove adapt to connection, the upper and lower cavity partition before the test can basis
The needs of test are removed or are installed；It is big that the return air inlet and air outlet being arranged on test cavity side wall are all proximate to test cavity one end diameter
In open at one end close to return air channel.
As a kind of preferred embodiment of the invention：It is additionally provided on pipeline between the air reservoir and air compressor machine true
Sky pump；It is described verification pressure sensor pressure measurement range be：0~0.9MPa；The resolution ratio of the verification pressure sensor
≤0.00002MPa；The position that test cavity is corresponded on the chamber door of the high-low temperature test chamber opens up transparent windows；The observation
The inner and/or outer surface of window is covered with antifog film；The antifog film is PET carbon fiber antifog film；The chamber door is close to top
Position is provided with display screen.
As a kind of preferred embodiment of the invention：The cabinet is thermal-insulating body, and thermal-insulating body is made of insulation board,
Insulation board includes stainless steel inner container layer, high temperature resistant layer of mineral wool, polyurethane high temperature resistant layer and epidermis；The polyurethane high temperature resistant layer
Side be compounded with the high temperature resistant layer of mineral wool；The other side of the polyurethane high temperature resistant layer is epidermis；The high temperature resistant mine
The other side of cotton layer is also compounded with the stainless steel inner container layer.
As a kind of preferred embodiment of the invention：The adjusting cylinder includes cylinder body, and cylinder body front end is preceding capping, cylinder
Body rear end is rear seal-cover, and the gas path joint being connected to loading line is arranged in preceding capping, and cylinder interior slidably assemble pushes plug, pushes away
Dynamic one end for filling in separate preceding capping is provided with pushing block, and one end of the separate promotion plug of pushing block is fixedly installed with rack gear, rack gear
It is engaged with driving gear, the gear shaft of gear is driven to extend to inside the drive enclosure outside cylinder body, and drive the tooth of gear
Pinion gear is installed in the end of wheel shaft, and pinion gear is engaged with the gear wheel inside driver drive enclosure, the gear shaft of gear wheel
Pass through the driving motor driving rotation being mounted on drive enclosure；The rack gear slides through rear seal-cover, installs on rear seal-cover
There is the extension cylinder body of inner hollow.
As a kind of preferred embodiment of the invention：Jagged heat dissipation is arranged in the cylinder body and the surface for extending cylinder body
Item；The driving motor is stepper motor；The diameter of the pinion gear is less than the diameter of gear wheel, the diameter of the driving gear
Less than or equal to the diameter of pinion gear.
As a kind of preferred embodiment of the invention：The testing jig includes two Z-type side plates, the top of Z-type side plate
Pass through two support tubes with bottom to connect；The bottom of the collar plate shape gauge outfit of the density monitor and master gauge passes through two
A support tube support；The temperature control section of the high-low temperature test chamber is -40 DEG C~70 DEG C.
As a kind of preferred embodiment of the invention：Two support tubes at the top of the Z-type side plate prolong separately down
Setting connecting rod is stretched, the end of two connecting rods is connected to the two sides of mounting base simultaneously；The mounting base includes U-shaped U-shaped folder plate, U
Type clamping plate includes upper clamp plate and lower clamp plate, is equipped on lower clamp plate for assembling gas supply branch and density monitor to be verified, mark
The mounting head of quasi- pressure gauge gas path joint, mounting head bottom are located at below lower clamp plate, and flange, flange and lower folder is arranged in top edge
Pressure spring is provided between plate；The gas path joint for passing through density monitor to be verified and master gauge is opened up on upper clamp plate
Via hole, U-shaped folder plate two sides are symmetrical arranged two bolts, and bolt is tightened and loosened so that the upper clamp plate of U-shaped folder plate and lower folder
Extended distance between plate reduces and increases.
As a kind of preferred embodiment of the invention：The open-topped inside of the mounting head is equipped with clamp port,
Clamp port is tightening and putting for the bolt being set with outside comprising the identical insert of four structures, the distance between insert by clamp port
Pine is adjusted.
Compared with the prior art, the present invention has the following advantages：
The detection system of sulfur hexafluoride density relay disclosed by the invention, the detection system of sulfur hexafluoride density relay
System, high-low temperature test chamber include cabinet, refrigeration system, refrigeration system box, compressor, control module and electrical cabinet, described electrical
The one side of cabinet is arranged in cabinet, and control module and memory are provided in electrical cabinet, pressure is provided in the refrigeration system box
Contracting machine and refrigeration system, the cabinet are divided into test cavity, return air channel and refrigeration system by cavity of resorption bottom plate and test cavity side wall
Case is provided with condenser, heater and centrifugal blower in the return air channel, be provided on the test cavity side wall air outlet and
Return air inlet, the centrifugal blower face air outlet setting, is arranged having heaters between the centrifugal blower and condenser, described cold
Condenser is arranged above return air inlet, and the centrifugal blower is connected to motor by transmission shaft；The test cavity medium position setting
There is upper and lower cavity partition, test cavity is divided into epicoele and cavity of resorption, the upper and lower cavity partition and cavity of resorption bottom plate by the upper and lower cavity partition
Upper surface middle position is respectively arranged with testing jig, and the upper and lower cavity partition bottom surface and box roof bottom surface are provided with test
Case temperature sensor, upper and lower cavity partition were provided with air port far from test cavity side wall；, test cavity is divided by upper and lower cavity partition
Chamber and cavity of resorption avoid forming distinguished and admirable dead angle in test cavity, influence test accuracy；Two tests may be implemented in epicoele and cavity of resorption
It is tested while chamber, test can also be compared, promoted test quantity, increase test function；
Verification component of the invention includes controller, and controller connects touch display screen, density monitor to be verified and mark
Quasi- pressure gauge；The verification component also includes loading line；Air reservoir is sequentially connected in series on the loading line, cylinder pressure passes
Sensor, proportioning valve；Verification pressure sensor and the adjusting cylinder for finely tuning air pressure are additionally provided on the loading line；This hair
It is bright to increase adjusting cylinder on the basis of existing verification component, the pressure of gas circuit can be further adjusted, precision, ratio are promoted
Valve is used for air pressure coarse adjustment, adjusts cylinder and is used for air pressure accurate adjustment；
The gas outlet of air reservoir of the invention connects the cylinder pressure sensors, and the air inlet of air reservoir is connected by pipeline
It is connected to verification temperature sensor, air compressor machine and filter；It is provided on the corresponding verification shell of filters locations for being gas storage
The connection air-path interface for gas bottle of cylinder gas supply；The loading line passes through described five logical four gas supply branches in parallel；It is described
Gas supply branch road is equipped with intake valve and corresponding density monitor to be verified or master gauge；All gas supply branches are also same
When be connected on exhaust apparatus；The exhaust apparatus includes exhaust valve；The exhaust valve and recycling gas cylinder pass through piping connection；Institute
The pressure of recycling gas cylinder is stated lower than the pressure on the pipeline of exhaust valve, the pressure for gas bottle is greater than the pressure of air reservoir.
The present invention recycles sulfur hexafluoride gas by recycling gas cylinder, verifies gas by providing sulfur hexafluoride for gas bottle, passes through pressure difference
The smooth quick of the smooth high speed and gas recovery supplied is realized in design；Verification temperature sensor of the invention, air compressor machine, mistake
The settings of filter and cylinder pressure sensors so that the gas supply of air reservoir part by a series of pressure detecting, temperature detection,
Time timer etc., makes air compressor machine work, fast aeration to air reservoir, remains the required pressure of setting, entire to complete
The course of work of equipment.
The present invention can detect the temperature compensation function under high temperature and low temperature simultaneously；It (can also to acquire by verification component
Directly to be observed outside high-low temperature test chamber) numerical value of sulfur hexafluoride density relay under corresponding high and low temperature environment, pass through
Comparison with standard value and theoretical com-pensation value determines whether temperature compensation function is correct.
Detailed description of the invention
Fig. 1 is a kind of structural block diagram of specific embodiment of the invention；
Fig. 2 is a kind of structural schematic diagram of specific embodiment of adjusting cylinder of the invention；
Fig. 3 is a kind of outside drawing of specific embodiment of high-low temperature test chamber of the invention；
Fig. 4 is a kind of schematic diagram of internal structure of specific embodiment of high-low temperature test chamber of the invention；
Fig. 5 is a kind of structural schematic diagram of specific embodiment of heat-insulation wall plate of the invention；
Fig. 6 is a kind of stereoscopic effect schematic diagram of specific embodiment of testing jig of the invention；
Fig. 7 is a kind of structural schematic diagram of specific embodiment of mounting base of the invention；
Fig. 8 is a kind of structural schematic diagram of the overlook direction of specific embodiment of mounting base of the invention.
Description of symbols：
1- verifies shell, and 2- adjusts cylinder, 3- cylinder pressure sensors, 4- air reservoir, 5- verification temperature sensor, 6- sky
Press, 7- is for gas bottle, 8- filter, and 9- verifies pressure sensor, 10- proportioning valve, 11- controller, 12- touch display screen,
13- chamber temperature sensor, 14- exhaust valve, 15- recycle gas cylinder, the meter to be verified of 16- second, the second normal pressure of 17-
Table, the meter to be verified of 18- first, the first master gauge of 19-, 20- intake valve, 21- high-low temperature test chamber, the examination of 22- high/low temperature
Tryoff；
101- extends cylinder body, 102- drive enclosure, 103- gear wheel, 104- driving motor, 105- rack gear, 106- promotion
Block, 107-, which is pushed, to be filled in, 108- cylinder body, is covered before 109-, 110- gas path joint, 111- pinion gear, 112- rear seal-cover；
201- pressure spring, 202- flange, 203- clamp port, 204- via hole, 205- lower clamp plate, 206- upper clamp plate, 207- bolt,
208-U type clamping plate, 209- mounting base, 210- connecting rod, 211-Z type side plate, 212- support tube, 215- high-low temperature test chamber, 216-
Chamber door, 217- transparent windows, 218- display screen；The first insert of 231-, the second insert of 232-, 233- third insert, 234-
Four inserts；
301- cabinet, 302- testing jig, 303- communicating pipe, 304- upper and lower cavity partition, 305- cavity of resorption, 306- cavity of resorption bottom plate,
307- refrigeration system, 308- compressor, 309- air inlet pipe, 312- test cavity side wall, 313- condenser, 314- memory, 315-
Heater, 316- control module, 317- electrical cabinet, 318- centrifugal blower, 319- transmission shaft, 320- motor, 321- air outlet,
322- epicoele, 323- return air inlet, 327- chamber temperature sensor, 330- refrigeration system box, 331- return air channel, 332- cabinet
Top plate；341- stainless steel inner container layer, 342- high temperature resistant layer of mineral wool, 343- polyurethane high temperature resistant layer, 344- epidermis.
Specific embodiment
The present invention is described in detail for each embodiment shown in reference to the accompanying drawing, but it should be stated that, these
Embodiment is not limitation of the present invention, those of ordinary skill in the art according to these embodiments made by function, method,
Or equivalent transformation or substitution in structure, all belong to the scope of protection of the present invention within.
As shown in Fig. 1~8, it illustrates specific embodiments of the present invention；As shown,
The detection system of sulfur hexafluoride density relay includes verification component and high-low temperature test chamber；
High-low temperature test chamber includes cabinet 301, refrigeration system 307, refrigeration system box 330, compressor 308, control module
316 and electrical cabinet 317, the electrical cabinet one side of cabinet is set, control module and memory, institute are provided in electrical cabinet
It states and is provided with compressor 308 and refrigeration system 307 in refrigeration system box, the cabinet is by cavity of resorption bottom plate 306 and test cavity side wall
312 are divided into test cavity, return air channel 331 and refrigeration system box 330, and condenser 313, heating are provided in the return air channel
Device 315 and centrifugal blower 318 are provided with air outlet 321 and return air inlet 323 on the test cavity side wall, and the centrifugal blower is just
Air outlet is arranged, having heaters is set between the centrifugal blower and condenser, the condenser is arranged above return air inlet,
The centrifugal blower is connect by transmission shaft with motor 320；The test cavity medium position is provided with upper and lower cavity partition 304, institute
It states upper and lower cavity partition and test cavity is divided into epicoele 322 and cavity of resorption 305, among the upper and lower cavity partition and cavity of resorption plate upper surface
Position is respectively arranged with testing jig 302, and the upper and lower cavity partition bottom surface and box roof bottom surface are provided with chamber temperature
Sensor 327, upper and lower cavity partition were provided with air port far from test cavity side wall；
The testing jig for being used to support density monitor and master gauge is placed on the testing jig 302；Also comprising being used for
The pipeline opening of communicating pipe is worn, pipeline opening is through-hole, and pipeline is provided on cabinet；Communicating pipe is by high-low temperature test chamber
Outside extend to the refrigeration system box of high-low temperature test chamber；One end that communicating pipe is located at outside high-low temperature test chamber be equipped with into
Tracheae 309, air inlet pipe are connected to the loading line of verification component；The communicating pipe is located at one end of the inside of high-low temperature test chamber
It is in parallel that there are four supply branch；
The verification component includes controller 11, and controller connects touch display screen 12, density monitor to be verified and mark
Quasi- pressure gauge；The verification component also includes loading line；Air reservoir 4, cylinder pressure have been sequentially connected in series on the loading line
Sensor 3, proportioning valve 10；Verification pressure sensor 9 and the adjusting gas for finely tuning air pressure are additionally provided on the loading line
Cylinder 2；
The gas outlet of the air reservoir connects the cylinder pressure sensors 3, and the air inlet of air reservoir passes through piping connection
There are verification temperature sensor 5, air compressor machine 6 and filter 8；It is provided on the corresponding verification shell of filters locations for being gas storage
The connection air-path interface for gas bottle of cylinder gas supply；Four above-mentioned gas supply branches in parallel on the loading line；The gas supply
Branch road is equipped with intake valve and corresponding density monitor to be verified or master gauge；All gas supply branches also connect simultaneously
It connects on exhaust apparatus；The exhaust apparatus includes exhaust valve 14；The exhaust valve and recycling gas cylinder 15 pass through piping connection；Institute
The pressure of recycling gas cylinder is stated lower than the pressure on the pipeline of exhaust valve, the pressure for gas bottle is greater than the pressure of air reservoir.
Setting air pressure size relation is in order to which pressure difference is arranged, so that supplying and recycling more efficient.
Preferably, as shown in Figure 4：Upper and lower cavity partition two sides are provided with protrusion, corresponding, cabinet and test cavity side
It is arranged fluted on wall, protrusion and groove adapt to connection, and the upper and lower cavity partition can take before the test according to the needs of test
Lower or installation；The return air inlet 323 and air outlet 321 being arranged on test cavity side wall are all proximate to test cavity one end diameter greater than close
Return air channel is open at one end.
Preferably, as shown in Fig. 1,3,4：Vacuum pump is additionally provided on pipeline between the air reservoir and air compressor machine；If
Setting vacuum pump can first vacuumize before initialization operation, allow entire pipeline and air reservoir etc. are internal thoroughly to empty；The school
The pressure measurement range for testing pressure sensor is：0~0.9MPa；The resolution ratio of the verification pressure sensor≤
0.00002MPa；The position that test cavity is corresponded on the chamber door of the high-low temperature test chamber opens up transparent windows 217；The observation
The inner and/or outer surface of window is covered with antifog film；The antifog film is PET carbon fiber antifog film；The chamber door is close to top
Position is provided with display screen.
Preferably, as shown in Figures 3 and 5：The cabinet is thermal-insulating body, and thermal-insulating body is made of insulation board, insulation board packet
Layer containing stainless steel inner container 341, high temperature resistant layer of mineral wool 342, polyurethane high temperature resistant layer 343 and epidermis 344；The resistance to height of polyurethane
The side of warm layer is compounded with the high temperature resistant layer of mineral wool；The other side of the polyurethane high temperature resistant layer is epidermis；The resistance to height
The other side of warm layer of mineral wool is also compounded with the stainless steel inner container layer.
Preferably, as shown in Figure 2：The adjusting cylinder includes cylinder body 108, and cylinder body front end is preceding capping 109, rear end of the cylinder block
For rear seal-cover 112, the gas path joint 110 be connected to loading line is set, the promotion of cylinder interior slidably assemble is filled in preceding capping
107, push the one end for filling in separate preceding capping to be provided with pushing block 106, one end of the separate promotion plug of pushing block is fixedly installed with
Rack gear 105, rack gear are engaged with driving gear, and the gear shaft of gear is driven to extend to inside the drive enclosure 102 outside cylinder body,
And drive the end of the gear shaft of gear that pinion gear 111, the gear wheel 103 inside pinion gear and driver drive enclosure are installed
The gear shaft of engagement, gear wheel is rotated by the driving of driving motor 104 being mounted on drive enclosure；The rack gear sliding is worn
Later 112 are covered, the extension cylinder body 101 of inner hollow is installed on rear seal-cover.The present embodiment devises specific adjusting cylinder
Structure, main improvement be adjust cylinder driving method on, driven by rack pinion engagement promotion plug along cylinder
Internal wall moves forward and backward, and realizes the accurate adjustment of air pressure；Gear-rack drive makes structure more compact, because can allow one completely
The a part of partial piston bar as rack gear；In addition, higher driving precision may be implemented by the design of gear ratio.It drives
The another side of the gear shaft of moving gear can realize manual and electric selective control according to rotating handles.
Preferably, as shown in Figure 2：Jagged heat sink strip is arranged in the cylinder body and the surface for extending cylinder body；The driving
Motor is stepper motor；The diameter of the pinion gear is less than the diameter of gear wheel, and the diameter of the driving gear is less than or equal to
The diameter of pinion gear.
Preferably, as shown in figs 6-8：The testing jig 214 includes two Z-type side plates 211, the top and bottom of Z-type side plate
Portion passes through two support tubes 212 and connects；The bottom of the collar plate shape gauge outfit of the density monitor and master gauge passes through two
A support tube support；The temperature control section of the high-low temperature test chamber is -40 DEG C~70 DEG C.The testing jig structure letter of the present embodiment
It is single, regardless of positive and negative, place simple.
Preferably, as shown in figs 6-8：Two support tubes at the top of the Z-type side plate are extended connecting rod separately down
210, the end of two connecting rods is connected to the two sides of mounting base 209 simultaneously；The mounting base includes U-shaped U-shaped folder plate 208, U-shaped
Clamping plate includes upper clamp plate 206 and lower clamp plate 205, is equipped on lower clamp plate for assembling gas supply branch and density relay to be verified
The mounting head of device, master gauge gas path joint, mounting head bottom are located at below lower clamp plate, and flange 202 is arranged in top edge, convex
Pressure spring 201 is provided between edge and lower clamp plate；It is opened up on upper clamp plate for across density monitor to be verified and master gauge
Gas path joint via hole 204, U-shaped folder plate two sides are symmetrical arranged two bolts 207, and bolt is tightened and loosened so that U-shaped
Extended distance between the upper clamp plate and lower clamp plate of clamping plate reduces and increases.The present embodiment devises the structure of mounting base, in this way
One, the dial plate of density monitor can not only be supported pipe secure support, and bottom can also be realized quick by insertion mounting base
It is fixed；In order to realize quick fixation of the mounting base to the gas path joint of density monitor and master gauge, the present invention passes through U-shaped
The structure of clamping plate realizes upper and lower compression, realizes the compression of openings of sizes by the insert of following embodiments, fixed in this way
Process is quick, can also use different specifications.
Preferably, as shown in figs 6-8：The open-topped inside of the mounting head is equipped with clamp port 203, and clamp port is
Include the identical insert of four structures (the first insert 231, the second insert 232, third insert 233, the 4th insert 234), insert
The distance between tighten and loosen adjusting by the bolt that is set with outside clamp port.Since the design of insert is so that along radial side
To the adjusting of openings of sizes have possibility, simplest mode is exactly that four insert flares are located remotely from each other, at this time
By the screw thread engaging bolt threads of insert outer surface, bolt makes tubaeform opening shrink realization clamping；It is of course also possible to allow edge
Block passes through spring forces towards grip block center movement in horizontal mode, and this elastic compression makes installation fixation more quick.
The preferred embodiment for the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Mode within the knowledge of a person skilled in the art can also be without departing from the purpose of the present invention
It makes a variety of changes, these variations are related to the relevant technologies well-known to those skilled in the art, these both fall within the invention patent
Protection scope.
Many other changes and remodeling can be made by not departing from the spirit and scope of the present invention.It should be appreciated that the present invention is not
It is limited to specific embodiment, the scope of the present invention is defined by the following claims.
Claims (9)
1. the detection system of sulfur hexafluoride density relay, it is characterised in that：Include verification component and high-low temperature test chamber；
High-low temperature test chamber includes cabinet, refrigeration system, refrigeration system box, compressor, control module and electrical cabinet, described electrical
The one side of cabinet is arranged in cabinet, and control module and memory are provided in electrical cabinet, pressure is provided in the refrigeration system box
Contracting machine and refrigeration system, the cabinet are divided into test cavity, return air channel and refrigeration system by cavity of resorption bottom plate and test cavity side wall
Case is provided with condenser, heater and centrifugal blower in the return air channel, be provided on the test cavity side wall air outlet and
Return air inlet, the centrifugal blower face air outlet setting, is arranged having heaters between the centrifugal blower and condenser, described cold
Condenser is arranged above return air inlet, and the centrifugal blower is connected to motor by transmission shaft；The test cavity medium position setting
There is upper and lower cavity partition, test cavity is divided into epicoele and cavity of resorption, the upper and lower cavity partition and cavity of resorption bottom plate by the upper and lower cavity partition
Upper surface middle position is respectively arranged with testing jig, and the upper and lower cavity partition bottom surface and box roof bottom surface are provided with test
Case temperature sensor, upper and lower cavity partition were provided with air port far from test cavity side wall；
The testing jig for being used to support density monitor and master gauge is placed on the testing jig；Also comprising for wearing connection
The pipeline of pipe is open, and pipeline opening is through-hole, and pipeline is provided on cabinet；Communicating pipe is prolonged by the outside of high-low temperature test chamber
Extend to the refrigeration system box of high-low temperature test chamber；One end that communicating pipe is located at outside high-low temperature test chamber is equipped with air inlet pipe, into
Tracheae is connected to the loading line of verification component；The communicating pipe is located at there are four one end parallel connections of the inside of high-low temperature test chamber
Supply branch；
The verification component includes controller, and controller connects touch display screen, density monitor to be verified and master gauge；
The verification component also includes loading line；Air reservoir, cylinder pressure sensors, ratio have been sequentially connected in series on the loading line
Valve；Verification pressure sensor and the adjusting cylinder for finely tuning air pressure are additionally provided on the loading line；
The gas outlet of the air reservoir connects the cylinder pressure sensors, and the air inlet of air reservoir has verification by piping connection
Temperature sensor, air compressor machine and filter；It is provided on the corresponding verification shell of filters locations for supplying for air reservoir
For the connection air-path interface of gas bottle；Four above-mentioned gas supply branches in parallel on the loading line；Pacify the gas supply branch road
Equipped with intake valve and corresponding density monitor to be verified or master gauge；All gas supply branches are also connected to exhaust simultaneously
On device；The exhaust apparatus includes exhaust valve；The exhaust valve and recycling gas cylinder pass through piping connection；The recycling gas cylinder
Pressure is greater than the pressure of air reservoir lower than the pressure on the pipeline of exhaust valve, the pressure for gas bottle.
2. the detection system of sulfur hexafluoride density relay as described in claim 1, it is characterised in that：The upper and lower cavity partition
Two sides are provided with protrusion, corresponding, and fluted, protrusion and groove adaptation connection are arranged on cabinet and test cavity side wall, described
Upper and lower cavity partition can be removed or be installed according to the needs of test before the test；The return air inlet being arranged on test cavity side wall and outlet air
It is open at one end greater than close to return air channel that mouth is all proximate to test cavity one end diameter.
3. the detection system of sulfur hexafluoride density relay as described in claim 1, it is characterised in that：The air reservoir and sky
Vacuum pump is additionally provided on pipeline between press；It is described verification pressure sensor pressure measurement range be：0~0.9MPa；
Resolution ratio≤0.00002MPa of the verification pressure sensor；The position of test cavity is corresponded on the chamber door of the high-low temperature test chamber
It sets and opens up transparent windows；The inner and/or outer surface of the observation window is covered with antifog film；The antifog film is PET carbon fiber
Antifog film；The chamber door is provided with display screen close to the position at top.
4. the detection system of sulfur hexafluoride density relay as described in claim 1, it is characterised in that：The cabinet is heat preservation
Cabinet, thermal-insulating body are made of insulation board, and insulation board includes stainless steel inner container layer, high temperature resistant layer of mineral wool, polyurethane high temperature resistant layer
And epidermis；The side of the polyurethane high temperature resistant layer is compounded with the high temperature resistant layer of mineral wool；The polyurethane high temperature resistant layer
The other side is epidermis；The other side of the high temperature resistant layer of mineral wool is also compounded with the stainless steel inner container layer.
5. the detection system of sulfur hexafluoride density relay as described in claim 1, it is characterised in that：The adjusting cylinder packet
Containing cylinder body, cylinder body front end is preceding capping, and rear end of the cylinder block is rear seal-cover, and the gas circuit being connected to loading line is arranged in preceding capping and connects
Head, cylinder interior slidably assemble push plug, and the one end for filling in separate preceding capping is pushed to be provided with pushing block, the separate promotion of pushing block
One end of plug is fixedly installed with rack gear, and rack gear is engaged with driving gear, and the gear shaft of gear is driven to extend to the drive outside cylinder body
Dynamic device interior of shell, and the end installation pinion gear of the gear shaft of gear is driven, inside pinion gear and driver drive enclosure
Gear wheel engagement, the gear shaft of gear wheel passes through the driving motor driving rotation that is mounted on drive enclosure；The rack gear
Rear seal-cover is slid through, the extension cylinder body of inner hollow is installed on rear seal-cover.
6. the detection system of sulfur hexafluoride density relay as claimed in claim 5, it is characterised in that：The cylinder body and extension
Jagged heat sink strip is arranged in the surface of cylinder body；The driving motor is stepper motor；The diameter of the pinion gear is less than canine tooth
The diameter of the diameter of wheel, the driving gear is less than or equal to the diameter of pinion gear.
7. the detection system of sulfur hexafluoride density relay as described in claim 1, it is characterised in that：The testing jig includes
Two Z-type side plates, the top and bottom of Z-type side plate pass through two support tube connections；The density monitor and normal pressure
The bottom of the collar plate shape gauge outfit of table passes through two support tube supports；The temperature control section of the high-low temperature test chamber is -40 DEG C~70
℃。
8. the detection system of sulfur hexafluoride density relay as claimed in claim 7, it is characterised in that：The Z-type side plate
Two support tubes at top are extended connecting rod separately down, and the end of two connecting rods is connected to the two sides of mounting base simultaneously；Institute
Stating mounting base includes U-shaped U-shaped folder plate, and U-shaped folder plate includes upper clamp plate and lower clamp plate, is equipped on lower clamp plate for assembling gas supply
The mounting head of branch and density monitor to be verified, master gauge gas path joint, mounting head bottom are located at below lower clamp plate, top
Flange is arranged in portion edge, and pressure spring is provided between flange and lower clamp plate；It is opened up on upper clamp plate for across density relay to be verified
The via hole of the gas path joint of device and master gauge, U-shaped folder plate two sides are symmetrical arranged two bolts, and bolt is tightened and loosened
So that the extended distance between the upper clamp plate and lower clamp plate of U-shaped folder plate reduces and increases.
9. the detection system of sulfur hexafluoride density relay as claimed in claim 8, it is characterised in that：The top of the mounting head
The inside of portion's opening is equipped with clamp port, and clamp port is comprising the identical insert of four structures, and the distance between insert passes through folder
That holds the bolt being set with outside mouth tightens and loosens adjusting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810865151.1A CN108872847A (en) | 2018-08-01 | 2018-08-01 | The detection system of sulfur hexafluoride density relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810865151.1A CN108872847A (en) | 2018-08-01 | 2018-08-01 | The detection system of sulfur hexafluoride density relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108872847A true CN108872847A (en) | 2018-11-23 |
Family
ID=64307218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810865151.1A Pending CN108872847A (en) | 2018-08-01 | 2018-08-01 | The detection system of sulfur hexafluoride density relay |
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| CN (1) | CN108872847A (en) |
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| CN110045200A (en) * | 2019-03-29 | 2019-07-23 | 浙江日新电气有限公司 | The test calibrating installation of SF6 transmitter |
| CN110441195A (en) * | 2019-09-04 | 2019-11-12 | 上海乐研电气有限公司 | A kind of gas density relay and its method of calibration with online self checking function |
| CN110501260A (en) * | 2019-09-04 | 2019-11-26 | 上海乐研电气有限公司 | A kind of gas density relay and its method of calibration with online self checking function |
| WO2021043035A1 (en) * | 2019-09-04 | 2021-03-11 | 上海乐研电气有限公司 | Method for modifying gas density relay, and gas density relay having online self-checking function and checking method therefor |
| CN112798398A (en) * | 2020-12-30 | 2021-05-14 | 广西电网有限责任公司电力科学研究院 | Be used for GIS density relay gas pressure testing arrangement |
| CN114236371A (en) * | 2021-11-15 | 2022-03-25 | 广东电网有限责任公司东莞供电局 | Relay multistation testing arrangement |
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Application publication date: 20181123 |