CN103367030B - The fitting joint of the sulfur hexafluoride gas density relay of maloperation can be prevented - Google Patents
The fitting joint of the sulfur hexafluoride gas density relay of maloperation can be prevented Download PDFInfo
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- CN103367030B CN103367030B CN201310335407.5A CN201310335407A CN103367030B CN 103367030 B CN103367030 B CN 103367030B CN 201310335407 A CN201310335407 A CN 201310335407A CN 103367030 B CN103367030 B CN 103367030B
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Abstract
The invention discloses the fitting joint of a kind of sulfur hexafluoride gas density relay that can prevent maloperation, including internal containing the relay airway being interconnected, switch airway and the valve seat of Self-sealing valve airway, the Self-sealing valve device being sealingly disposed in Self-sealing valve ventilation road junction and closeouts.Self-sealing valve device is not when having external transit joint, and this Self-sealing valve device can make relay airway mutually unobstructed with the gas circuit of switch airway automatically；And Self-sealing valve device is when external inflation transit joint, the gas circuit of inflation transit joint and switch airway can be made to communicate, just sulfur hexafluoride electric switch can be inflated；And Self-sealing valve device is when external verification transit joint, this Self-sealing valve device can make the gas circuit of relay airway and switch airway close, realization need not be dismantled density monitor and need not additionally carry out air flue opening and closing operations, just density monitor can be verified, and can ensure that the sealing of sulfur hexafluoride electric switch, thoroughly prevent verification maloperation.
Description
Technical field
The present invention relates to the equipment that sulfur hexafluoride gas is verified, more specifically refer to that one can prevent maloperation
The fitting joint of sulfur hexafluoride gas density relay.
Background technology
It is close that sulfur hexafluoride gas density relay is used to detect the sulfur hexafluoride gas in sulfur hexafluoride electric switch
The change of degree, its performance quality directly influences the reliable and secure operation of sulfur hexafluoride electric switch.It is installed on
On-the-spot sulfur hexafluoride gas density relay is because of infrequently action, and through one section time, after date often occurs that action is ineffective
Living or the phenomenon of poor contact of contacts, the temperature-compensating performance that there is also having is deteriorated, when variation of ambient temperature
It is easily caused sulfur hexafluoride gas density relay misoperation.Therefore testing regulations regulation: each sulfur hexafluoride is electric
Switch uses unit periodically should verify sulfur hexafluoride gas density relay.From the point of view of practical operation situation,
On-the-spot sulfur hexafluoride gas density relay is carried out periodic check is to prevent trouble before it happens, and ensures power equipment peace
One of necessary means of full reliability service.And when verifying at the scene, the gas of some sulfur hexafluoride electric switches is close
The plinth of degree relay is the type of attachment using non-return valve.Verify at present or change this type of attachment
Density monitor just can only unload three way cock's seat, makes it depart from Switch main body, it may be assumed that to make non-return valve and check
Valve separately, then starts verification or changes relay.Owing to being automatic because of non-return valve on sulfur hexafluoride electric switch
The non-return valve closed, thus without gas leakage.But owing to the risk damaging sealing ring can be there is in unloading process,
Therefore the risk of gas leakage can still be there is.
In order to solve the problems referred to above, I discloses six kinds of fitting joints for check-up gas density electrical relay:
See Chinese patent ZL200520045890.4(plinth for check-up gas density electrical relay),
The plinth that gas density relay is verified by ZL200520045891.9(mono-kind), ZL200620048834.0
(one is used for verifying SF6The attachment means of gas density relay), ZL200820154948.2(is used for verifying
SF in SF6 electric switch6The fitting joint of gas density controller), ZL200820059409.0(mono-kind with
Attachment means in check-up gas density electrical relay) and 201020512953.3(mono-kind be used for verifying gas density and continue
The attachment means of electrical equipment), these patented products are introduced to the market, and the maintenance for electric power brings convenience.But these
Product there is also significant deficiency, and wherein ZL200520045890.4(mono-kind is used for check-up gas density electrical relay
Plinth), ZL200520045891.9(mono-kind plinth that gas density relay is verified) and
ZL200620048834.0(mono-kind is for verifying the attachment means of SF6 gas density relay) all it is not turned on
Indicate with turning off, therefore can there is maloperation, bring hidden danger to the safe operation of sulfur hexafluoride electrical equipment.I.e.
Make by improving, make these fitting joints had be switched on and off mark (see ZL200820059409.0 and
ZL201020512953.3), but staff operation time, still can there is operational error.Such as in school
After testing, forget Open valve.Justing think, operationally, and now fitting joint is still within verification state,
As it is shown in figure 1, i.e. sulfur hexafluoride electric switch all air inlets gas circuit is in the passage of gas density relay
Partition state, gas density relay is to cut off in gas circuit with Switch main body, such gas density relay
Cannot really monitor the gas density of sulfur hexafluoride electric switch.If the gas in sulfur hexafluoride electric switch
There occurs leakage, and the gas of gas density relay side does not leak, then gas density relay would not
Sending warning or block signal, at this moment gas density relay is practically at inoperative state, to electrical network
Safe operation brings great hidden danger.
For patent ZL200820059409.0(mono-kind as shown in Figure 2 for check-up gas density electrical relay
Attachment means), if after Jiao Yan, valve opening device 3 is not installed due to operator and put in place, cause valve opening
The push rod 31 of device 3 does not back down the spool 22 of Self-sealing valve device 2, then now sulfur hexafluoride electric switch institute
Having the gas circuit of air inlet and the passage of gas density relay to be in partition state, gas density relay is in gas circuit
Upper and sulfur hexafluoride electric switch is to cut off, and it is electric that such density monitor cannot really monitor sulfur hexafluoride
The gas density of switch.It is used for verifying similarly for patent ZL201020512953.3(mono-kind as shown in Figure 3
The attachment means of gas density relay), if after Jiao Yan, owing to valve-opening mechanism 3 is not pacified by operator
Install to position, or when valve-opening mechanism 3 is still positioned at verification state, the Self-sealing valve 31 of valve-opening mechanism 3 can be caused
Spring mountings 314 does not back down the sealing member 21 on the valve body 22 of stop valve 2, the valve body 22 of stop valve 2
On sealing member 21 the middle air flue in the 3rd air flue 301 is sealed mutually with the aperture between anterior air flue, make the
The gas circuit of two air flues 201 and the first air flue 101 is blocked, has sealed up the gas of the second air flue 201 simultaneously,
Gas is made to leak outside, then the gas circuit of the now all air inlets of sulfur hexafluoride electric switch and gas density relay
Passage be in partition state, gas density relay in gas circuit with sulfur hexafluoride electric switch be cut off,
So density monitor cannot really monitor the gas density of sulfur hexafluoride electric switch.
In sum, patent ZL200520045890.4, ZL200520045891.9, ZL200620048834.0,
There is a significant deficiency in ZL200820059409.0 and ZL201020512953.3 etc., it is simply that verifies complete jointly
After, it is required for operator and carries out the action of air flue unlatching, once forget or operate not in place, hexafluoro will be there is
The passage of the gas circuit and gas density relay of changing all air inlets of sulfur electric switch is in partition state, i.e. can deposit
In maloperation, bring hidden danger to the safe operation of sulfur hexafluoride electric switch.It addition, except I application with
Outside upper patented product, also can there is operational error in the Patents product of other unit or individual application, i.e. in school
After testing, forget Open valve.I.e. one significant deficiency of common existence, it is simply that after verification, be required for
Operator carries out the action of air flue unlatching, once forgets or operates not in place, will there is sulfur hexafluoride and electrically open
The passage of the gas circuit and gas density relay of closing all air inlets is in partition state, electrically opens to sulfur hexafluoride
The safe operation closed brings hidden danger.
And patent ZL200820154948.2(mono-kind is for the attachment means of check-up gas density electrical relay) although
Solve maloperation problem, but the check problem of only considered.From Fig. 4 it is clear that this attachment means
Self-sealing valve device lay down protection set 27 after, even if inflation transit joint be inserted from from the rear end of self-styled valve pocket
Envelope valve pocket inner chamber also makes self-styled spool move forward, due to the effect of sealing ring 250A, this inflation transit joint and
The gas circuit of the switch airway of fitting joint communicates never, i.e. the Self-sealing valve device of this fitting joint exists
During external inflation transit joint, it is impossible to make the gas circuit of inflation transit joint and switch airway communicate, also cannot
Sulfur hexafluoride electric switch is inflated, or tests micro-water, be only capable of realizing the merit of check-up gas density electrical relay
Energy.Inflation inlet must be additionally set to inflation, add cost the most undoubtedly, too increase air leakage point simultaneously,
Safe operation to product especially adds risk, brings great hidden danger to the safe operation of electrical network.
It addition, for patent ZL201020102978.6, the most technically or from content, essence
Upper is duplicate with patent ZL200820154948.2.For patent ZL201020102978.6, attached from it
Figure (Fig. 2) is even if it is clear that inflate transit joint on Lian Jieing, the stop valve 2 of device can not make inflation
The gas circuit of transit joint and switch airway communicates, and cannot be inflated sulfur hexafluoride electric switch, only solve
Density monitor of having determined need not when maintenance or verification cut off pipeline source of the gas, the most not by regulation switch
Need to unload density monitor, but there is no aerification function, so inflation inlet must additionally be arranged, the most undoubtedly
Add cost, too increase air leakage point simultaneously.
For patent ZL200820059409.0 as shown in Figure 2, when verifying density monitor, need to unload
Valve opening device 3.And after unloading valve opening device 3, the sulfur hexafluoride gas in density monitor 10 will pass through
Pore B is discharged in air.Due to the greenhouse effect of sulfur hexafluoride gas be 20,000 times of carbon dioxide with
On, if sulfur hexafluoride gas is discharged in air, greenhouse gas emission will be greatly increased, be highly detrimental to
Environmental protection.Equally, after unloading valve opening device 3, joint and density monitor directly will communicate with air, air
In owing to there is moisture, particularly during wet season, moisture will be made to enter joint and density monitor, and then
Making moisture enter in sulfur hexafluoride electric switch, this is the most unallowed, so needing to improve and innovation.
Summary of the invention
It is an object of the invention to provide the assembling of a kind of sulfur hexafluoride gas density relay that can prevent maloperation
Joint, sulfur hexafluoride electric switch can not only be inflated by it at same position, it is also possible to makes operator
Density monitor need not be dismantled and need not additionally carry out the opening and closing operations of air flue, it is possible to density monitor is entered
Row verification, and can ensure that the sealing of sulfur hexafluoride electric switch, there is the function preventing maloperation.
Realizing above-mentioned purpose one technical scheme is: a kind of sulfur hexafluoride gas density relay that can prevent maloperation
The fitting joint of device, leads to containing the relay airway being interconnected, switch airway and Self-sealing valve including internal
The valve seat of air flue, Self-sealing valve device and closeouts；Corresponding relay airway on the outer surface of described valve seat,
Switch airway and Self-sealing valve airway are provided with relay interface seat, switch interface seat and Self-sealing valve correspondingly
Interface block；Wherein, described Self-sealing valve device include front portion be arranged on the self-styled valve pocket on described Self-sealing valve interface block,
It is fixed on the anterior spool guide of the inner chamber of self-styled valve pocket, is positioned at the inner chamber of described self-styled valve pocket and can axially move
Dynamic self-styled spool, the self-styled spring between spool guide and self-styled spool and before being connected to self-styled spool
The stop valve of end；Described closeouts is arranged on the rearward end of described self-styled valve pocket；When there is no external transit joint,
Described Self-sealing valve device makes described Self-sealing valve airway close and makes described relay airway and described switch ventilation
Road communicates；If after laying down described closeouts, an inflation transit joint is inserted from the rear end of described self-styled valve pocket institute
State the inner chamber of self-styled valve pocket and support in the rear end of described self-styled spool, making self-styled spool move forward a segment distance
L1, makes inflation transit joint communicate with described relay airway and described switch airway respectively；If laying down institute
After stating closeouts, a verification transit joint is inserted from the rear end of described self-styled valve pocket self-styled valve pocket inner chamber and supports
In the rear end of described self-styled spool, self-styled spool is made to move forward a segment distance L2, so that described stop valve is by institute
State switch airway to close, and make verification transit joint communicate with relay airway.
Above-mentioned fitting joint, wherein, described stop valve is cutting of an oral area being positioned at described Self-sealing valve airway
Only spool.
Above-mentioned fitting joint, wherein, described cut-off spool and described self-styled spool are an overall structure.
Above-mentioned fitting joint, wherein, described cut-off spool is provided with cut-off sealing member, and this cut-off sealing member is
Rubber ring, rubber blanket or the sulfuration rubber parts on cut-off spool.
Above-mentioned fitting joint, wherein, described stop valve is existed by being positioned at described switch airway also Opposite direction connection
The checking-valve body of described self-styled spool front end, the cut-off sealing member being located on checking-valve body, it is fixed on valve seat
Spring mountings and the cut-off Self-sealing valve that constitutes of the cutoff spring that is located between checking-valve body and spring mountings.
Above-mentioned fitting joint, wherein, the rear portion of described self-styled spool is provided with self-styled sealing member, this self-styled sealing
Part is rubber ring, rubber blanket or sulfuration rubber parts on self-styled spool.
Above-mentioned fitting joint, wherein, is provided with some closure and seals between described closeouts and described self-styled valve pocket
Part, these closure sealing members are rubber ring, rubber blanket or O.
Above-mentioned fitting joint, wherein, on described relay interface seat, sealing arranges a non-return valve.
Realizing above-mentioned purpose another kind technical scheme is: a kind of sulfur hexafluoride gas density that can prevent maloperation continues
The fitting joint of electrical equipment, including internal containing the relay airway being interconnected, switch airway and Self-sealing valve
The valve seat of airway, Self-sealing valve device and closeouts；Corresponding relay ventilation on the outer surface of described valve seat
Road, switch airway and Self-sealing valve airway be provided with correspondingly relay interface seat, switch interface seat and from
Envelope valve interface block；Wherein, to include that front portion is arranged on described Self-sealing valve interface block self-styled for described Self-sealing valve device
Valve pocket, be fixed on the anterior spool guide of the inner chamber of self-styled valve pocket, be positioned at described self-styled valve pocket inner chamber and can
The self-styled spool moved axially, the self-styled spring between spool guide and self-styled spool and be connected to self-styled
Spool front end is also positioned at the ball valve of oral area of described switch airway；Described closeouts is arranged on described self-styled valve pocket
Rearward end；When not having external transit joint, described Self-sealing valve device makes described Self-sealing valve airway close also
Described relay airway is made to communicate with described switch airway；If after laying down described closeouts, inflating one
Cross joint insert the inner chamber of described self-styled valve pocket from the rear end of described self-styled valve pocket and support at described self-styled spool
Rear end, makes self-styled spool move forward a segment distance L1, makes inflation transit joint ventilate with described relay respectively
Road and described switch airway communicate；If after laying down described closeouts, by a verification transit joint from described self-styled
The rear end of valve pocket is inserted self-styled valve pocket inner chamber and is connected to the rear end of described self-styled spool, make described self-styled spool to
Again described verification transit joint is rotated an effective angle α after front movement one segment distance L2, so that described ball valve will
Described switch airway cuts off with relay airway, and makes verification transit joint communicate with relay airway.
Above-mentioned fitting joint, wherein, is provided with self-locking even between described verification transit joint and described self-styled spool
Connection mechanism.
The fitting joint of the sulfur hexafluoride gas density relay that can prevent maloperation of the present invention has following innovation
Point:
(1) inflation inlet of the fitting joint of the present invention, micro-water test port, verification mouth and gas Shuttoff Valve mouth are
Same mouth, does not i.e. additionally arrange inflatable interface, micro-water test port, it is possible at same position to lithium
Sulfur electric switch is inflated and tests the gas circuit of micro-water or shutoff sulfur hexafluoride electric switch and continues gas density
Electrical equipment verifies, and farthest decreases air leakage point；
(2) fitting joint of the present invention can thoroughly prevent maloperation, because need not additionally carry out opening of air flue
Closed operation, it is possible to realize density monitor is verified, and can ensure that sulfur hexafluoride electric switch seal and
Safety.I.e. need not dismantle or move the Self-sealing valve in fitting joint, can be achieved with inflating (testing micro-water), gas
Body turns off and the operation of verification, the Self-sealing valve in fitting joint of need not reinstalling or reset after having operated,
It is thus possible to ensure that sulfur hexafluoride electric switch, when properly functioning, makes sulfur hexafluoride electric switch all of air inlet gas
Road is in communicating state with the passage of gas density relay, and such gas density relay just can really be monitored
The sulfur hexafluoride gas density of sulfur hexafluoride electric switch, if the sulfur hexafluoride gas in sulfur hexafluoride electric switch
Once there occurs leakage, gas density relay will send warning or block signal in time, it is ensured that electrical network
Safe operation；
(3) fitting joint of the present invention need not arrange and be switched on and off mark, also ensures that sulfur hexafluoride is electrically opened
Close when properly functioning, sulfur hexafluoride electric switch all of air inlet gas circuit and the passage of gas density relay
Communicating, it is close that such density monitor just can really monitor the sulfur hexafluoride gas in sulfur hexafluoride electric switch
Degree；
(4) the fitting joint good seal performance of the present invention, safety coefficient is high, and simple in construction, volume is little.
In sum, the novelty of the fitting joint of the present invention is it will be evident that it is thus possible to ensure that sulfur hexafluoride is electric
Switch, when properly functioning, makes the logical of sulfur hexafluoride electric switch all of air inlet gas circuit and gas density relay
Pore is in communicating state, and such gas density relay just can really monitor the hexafluoro of sulfur hexafluoride electric switch
Changing sulfur gas density, if the sulfur hexafluoride gas in sulfur hexafluoride electric switch once there occurs leakage, gas is close
Degree relay will send warning or block signal in time, it is ensured that the safe operation of electrical network.The assembling of the present invention
Joint can adapt to use under the field condition varied, and can thoroughly prevent the operation of operator not simultaneously
When, it is ensured that the safe operation of electrical network, can facilitate again and sulfur hexafluoride electric switch is inflated (or testing micro-water).
Accompanying drawing explanation
Fig. 1 is the fitting joint of the first prior art structural representation when verifying work state；
Fig. 2 is the fitting joint of the second prior art structural representation when normal operating conditions；
Fig. 3 is the fitting joint of the third prior art structural representation when normal operating conditions；
Fig. 4 is the fitting joint of the 4th kind of prior art structural representation when normal operating conditions；
Fig. 5 is the fitting joint that the first of the present invention can prevent the sulfur hexafluoride gas density relay of maloperation
Structural representation when normal operating conditions；
Fig. 6 is the first fitting joint of the present invention structural representation when inflation (or the test of micro-water)；
Fig. 7 is the first fitting joint of the present invention structural representation when verification or replacing gas density relay
Figure；
Fig. 8 is the second fitting joint of the present invention structural representation when normal operating conditions；
Fig. 9 is the third fitting joint of the present invention structural representation when normal operating conditions；
Figure 10 is the third fitting joint of the present invention structural representation when inflation (or the test of micro-water)；
Figure 11 is the third fitting joint of the present invention structural representation when verification or replacing gas density relay
Figure.
Detailed description of the invention
Provide the detailed description of the invention of the present invention below in conjunction with the accompanying drawings:
As shown in Fig. 5, Fig. 6 and Fig. 7, the first of the present invention can prevent the sulfur hexafluoride gas density of maloperation
The fitting joint of relay, including valve seat 1, Self-sealing valve device 2, closeouts 3, relay connector 4,
Switch connector 5, inflation transit joint 61 and verification transit joint 62, wherein:
The inside of valve seat 1 is contained relay airway 11, switch airway 12 and the Self-sealing valve being interconnected and is led to
Air flue 13, switch airway 12 have one to three, respectively from the A phase in sulfur hexafluoride electric switch, B phase,
C phase；The outside corresponding relay airway 11 of valve seat 1, switch airway 12 and Self-sealing valve airway 13
It is provided with relay interface seat 14, switch interface seat 15 and Self-sealing valve interface block 16 correspondingly；
Relay connector 4 is arranged on relay interface seat 14, and switch connector 5 is sealingly mounted at switch and connects
On mouth seat 15；
Self-sealing valve device 2 includes that front portion is connected to the self-styled valve pocket 21 of the inner chamber of Self-sealing valve interface block 16, is located at
In the inner chamber of self-styled valve pocket 21 and external rear face be provided with flange self-styled spool 22, be threaded in self-styled
The anterior spool guide 24 of the inner chamber of valve pocket 21, it is sleeved on the outer surface of self-styled spool 22 and is positioned at spool
Self-styled spring 23 between guide 24 and flange and be connected to the front end of self-styled spool 22 and be positioned at Self-sealing valve and lead to
The cut-off spool 25 of the oral area of air flue 13；The form of spool guide 24 can be various；
The flanged rear face of self-styled spool 22 is provided with self-styled sealing member 220, and this self-styled sealing member 220 is rubber
Circle, rubber blanket or sulfuration rubber parts on self-styled spool 22；
The head of cut-off spool 25 is provided with cut-off sealing member 250, and this cut-off sealing member 250 is rubber ring, rubber
Pad or sulfuration rubber parts on cut-off spool 25；
Closeouts 3 is arranged on the rearward end of self-styled valve pocket 21；Closeouts 3 includes block head 32 and capping 33,
Being provided with some closure sealing members 31 between block head 32 and self-styled valve pocket 21, these closure sealing members 31 are rubber
Circle, rubber blanket or 0 shape circle.
When not having external transit joint, Self-sealing valve device 2 can make switch airway 12 and relay lead to automatically
The gas circuit of air flue 11 is connected；If after laying down closeouts 3, transit joint 61 will be inflated from self-styled valve pocket 21
Rear end insert the inner chamber of self-styled valve pocket 21 and support in the rear end of self-styled spool 22, make self-styled spool 22 forward
Mobile distance L1, makes the gas circuit of inflation transit joint 61 and switch airway 12 communicate, it is possible to hexafluoro
Change sulfur electric switch and be inflated (see figure 6)；If after laying down closeouts 3, will verification transit joint 62 from
The rear end of self-styled valve pocket 21 is inserted the inner chamber of self-styled valve pocket 21 and supports in the rear end of self-styled spool 22, makes self-styled
Spool 22 moves forward distance L2, so that cut-off spool 25 moves forward and is blocked by switch airway 12,
Make verification transit joint 62 communicate with relay airway 11, it is achieved density monitor need not be dismantled, just simultaneously
Can facilitate density monitor is carried out verify (see figure 7), thus can same place realize inflation, verification and
Valve operation.
The second fitting joint (as shown in Figure 8) of the present invention simplifies in the first fitting joint of the present invention
Self-sealing valve device 2, i.e. eliminate and be threaded in the spool guide 24 that the inner chamber of self-styled valve pocket 21 is anterior,
But at the suitable spacer ring 17 of the inner chamber one-body molded of Self-sealing valve interface block 16 and the structure of spool guide 24.
In a word, the form of Self-sealing valve device 2 can be various, repeats the most one by one at this.
The third fitting joint (as shown in Fig. 9, Figure 10 and Figure 11) of the present invention, including valve seat 1 ',
Self-sealing valve device 2, closeouts 3, relay connector 4, switch connector 5, inflation transit joint 61 and school
Test transit joint 62, wherein:
Relay connector 4 is arranged on (present case is the integrated design) on relay interface seat 14, and switch is even
Fitting 5 is sealingly mounted at (present case is the integrated design) on switch interface seat 15；
Self-sealing valve device 2 includes that front portion is connected to the self-styled valve pocket 21 of the inner chamber of Self-sealing valve interface block 16, is located at
In the inner chamber of self-styled valve pocket 21 and external rear face be provided with flange self-styled spool 22, be threaded in self-styled
The anterior spool guide 24 of the inner chamber of valve pocket 21, it is sleeved on the outer surface of self-styled spool 22 and is positioned at spool
Self-styled spring 23 between guide 24 and flange and be connected to the ball valve 7 of front end of self-styled spool 22；This ball
Valve 7 is positioned at the oral area of switch airway 12, and the front end of self-styled spool 22 is connected with the lever 71 of ball valve 7,
When rotating self-styled spool 22, can with the lever 71 of rotary ball valve 7, and then can control ball valve 7 unlatching and
Close.
When not having external transit joint, Self-sealing valve device 2 controls what ball valve 7 was on, i.e. relay ventilation
The gas circuit of road 11 and switch airway 12 communicates；
After laying down closeouts 3, inflation transit joint 61 is inserted from the rear end of self-styled valve pocket 21 self-styled valve pocket
21 inner chambers are also supported in the rear end of self-styled spool 22, make self-styled spool 22 move forward distance L1, now fill
Self-styled spool 22 opened by gas transit joint 61, but controls what ball valve 7 was on, makes switch airway 12 He
The gas circuit of inflation transit joint 61 communicates, and the gas circuit of relay airway 11 and switch airway 12 also communicates,
Just can facilitate and sulfur hexafluoride electric switch is inflated (see figure 10)；
After laying down closeouts 3, verification transit joint 62 is inserted from the rear end of self-styled valve pocket 21 self-styled valve pocket
21 inner chambers are also connected to the rear end of self-styled spool 22, make self-styled spool 22 move forward distance L2, after putting in place,
Turned clockwise by verification transit joint 62 effective angle α, this α can be 90 ° or 180 ° etc. and (verified
Cross direction of rotation when joint 62 verifies and angle [alpha] can be with flexible design angle [alpha]), the anglec of rotation of present case
α=90 °, i.e. rotate verification transit joint 62 and arrive checksum location, and then make self-styled spool 22 also turn clockwise
90 °, owing to the front end of self-styled spool 22 and the lever 71 of ball valve 7 are connected to, the most just have rotated ball valve 7
Lever 71, and then make ball valve 7 close and be blocked by switch airway 12, and now verify transit joint
62 are still interconnected with relay airway 11, it is achieved need not dismantle density monitor, it is possible to it is right to facilitate
Density monitor carries out verifying (see Figure 11).And after verification, owing to verification transit joint 62 is with self-styled
It is provided with self-locking connection mechanism, it is therefore necessary to arrived by half-twist counterclockwise for verification transit joint 62 between spool 22
Normal operation position, could dismantle verification transit joint 62, thus ensure what ball valve 7 was on, to ensure to continue
The gas circuit of electrical equipment airway 11 and switch airway 12 communicates.Thus can be implemented in same place inflation, school
Test and valve operation.
The relay interface seat 14 of the third fitting joint of the present invention or be connected with relay interface seat 14
Relay connector 4 can also seal and arrange a non-return valve 8, and this non-return valve 8 is mainly by main valve body 82, fixing
Valve body 81, some sealing members 83,820, spring 86, steel ring 84, spring mountings 85 etc. form.Wherein,
Sealing member 820 is fixed on main valve body 82；Main valve body 82, spring 86, steel ring 84, spring mountings 85
It is arranged on the inner chamber of fixed valve body 81；Fixed valve body 81 is sealed by sealing member 83 and is fixed on relay connector
On 4.If have staff to occur directly to unload the maloperation of gas density relay, in the effect of spring 86
Under, just sealing is in the aperture of fixed valve body 81, so for the sealing member 820 on the main valve body 82 of this non-return valve 8
This non-return valve 8 can make relay airway 11 close, and the gas in Switch main body would not leak.And work as gas
When body density relay runs, density monitor can back down the main valve body 82 of this non-return valve 8, make sealing member 820
Leaving the aperture of fixed valve body 81, now, sealing member 820 does not contacts with fixed valve body 81, makes relay lead to
Air flue 11 communicates with switch airway 12.Therefore this non-return valve 8 can prevent when changing density monitor
Sulfur hexafluoride gas leaks outside, it is ensured that good airproof performance, is also convenient for changing density monitor simultaneously.And non-return valve 8
Form can be various.
The valve seat 1' of the third fitting joint of the present invention is integral type, it is also possible to be split type, and it is by verifying
Interface block 16, seal be fixed on verification changeover joint seat 16 lower end relay interface seat 14 and seal be fixed on
The sulfur hexafluoride electric switch interface block 15 of verification changeover joint seat 16 upper end forms.Welding or close can be used
Seal fixing seal.
The 4th kind of fitting joint of the present invention, connects including valve seat, Self-sealing valve device, closeouts, relay
Part, switch connector, inflation transit joint and verification transit joint, wherein: before Self-sealing valve device 2 includes
Portion is connected to the self-styled valve pocket of the inner chamber of Self-sealing valve interface block 16, is located in the inner chamber of self-styled valve pocket and rear portion
Outer surface be provided with flange self-styled spool, be threaded in the anterior spool guide of the inner chamber of self-styled valve pocket,
It is sleeved on the self-styled spring on the outer surface of self-styled spool and between spool guide and flange and is connected to certainly
The stop valve of the front end of envelope spool.This stop valve is by being positioned at switch airway Opposite direction connection before self-styled spool
End checking-valve body, be located on checking-valve body cut-off sealing member, the spring mountings being fixed on valve seat and
The cut-off Self-sealing valve that the cutoff spring being located between checking-valve body and spring mountings is constituted.
The fitting joint of the sulfur hexafluoride gas density relay that can prevent maloperation of the present invention, utilizes relay to connect
Mouthful seat 14 is connected with gas density relay, switch interface seat 15 and electric switch connector 5 and lithium
Sulfur electric switch is connected and is fixed on Switch main body.During normal operating conditions (as shown in Figure 5), it is located at
Self-sealing valve device 2 on Self-sealing valve interface block 16 under the effect of self-styled spring 23, on self-styled spool 22 from
It is sealed sealing 220 to reliably seal with self-styled valve pocket 21, makes gas to leak.And the cut-off of Self-sealing valve device 2
Cut-off sealing member 250 on spool 25 does not contacts with the inner chamber of the Self-sealing valve interface block 16 of valve seat 1,
Not contacting with switch airway 12, the gas circuit making switch airway 12 with relay airway 11 is
Communicate.
To the inflation of sulfur hexafluoride electric switch, QI invigorating or when testing micro-water (as shown in Figure 6), if handle
Closeouts 3 is pulled down and external inflation transit joint 61, under external force, make inflation transit joint 61 displacement away from
From L1=5mm(present case) the most limited afterwards, now self-styled spool 22 opened by inflation transit joint 61, due to
Inflation transit joint 61 is the most limited after displacement 5mm thoroughly opens self-styled spool 22, the most self-styled spool 22
Although promoting cut-off spool 25 to move, but its limited displacement, the cut-off sealing member 250 on cut-off spool 25
Do not contact with the inner cavity surface of Self-sealing valve interface block 16, do not contact with switch airway 12, make switch
Airway 12 is mutually unobstructed with the gas circuit of inflation transit joint 61, it is possible to conveniently enter sulfur hexafluoride electric switch
Row inflation.
To verification or change gas density relay (as shown in Figure 7), as long as closeouts 3 being pulled down and outward
Connecing verification transit joint 62, under external force, verification transit joint 62 can shift length L2=11mm(basis
Case), self-styled spool 22 promotes cut-off spool 25 to move, after enough displacements, it is possible to make to end spool 25
On cut-off sealing member 250 contact with the inner cavity surface of Self-sealing valve interface block 16, thus airtight switch airway 12
Air inlet, sealed up the leaking outside of gas of switch airway 12, and relay airway 11 and verification transition
The gas circuit of joint 62 is mutually unobstructed, thus may utilize this verification transit joint 62 and carrys out check-up gas density electrical relay,
The same the most replaceable gas density relay of this state.During the most whole verification or replacing density monitor,
Just need not dismantle disengaging sulfur hexafluoride gas density relay or valve seat, for the operation band of electric power overhaul personnel
Facilitate, it is ensured that the safe handling of sulfur hexafluoride electrical equipment.Owing to the fitting joint of the present invention need not additionally
Carry out the opening and closing operations of air flue, particularly as long as and only with external verification transit joint 62, it is possible to realize
Density monitor is verified.After verification, staff is bound to unload the verification with connecting trachea
Transit joint 62, the Self-sealing valve device 2 of the fitting joint of such present invention just automatically restores to normal operating conditions
Time (as shown in Figure 5), the most thoroughly prevent maloperation, and can ensure that sulfur hexafluoride electric switch seal and
Safety.
More embodiment it will be seen that the present invention can change from above-mentioned many embodiments, therefore, this
Those of ordinary skill in technical field is it should be appreciated that above embodiment is intended merely to illustrate the power of the present invention
Profit requirement, and be not used as limitation of the invention, as long as in the spirit of the present invention, to
The upper change of described embodiment, modification all will fall in the range of claims of the present invention.Such as Self-sealing valve device
Can be there to be other form, closeouts can also have other form, and stop valve can also have other form.
Claims (9)
1. can prevent a fitting joint for the sulfur hexafluoride gas density relay of maloperation, contain including inside
The relay airway that is interconnected, switch airway and the valve seat of Self-sealing valve airway, Self-sealing valve device and
Closeouts；Corresponding relay airway, switch airway and Self-sealing valve airway on the outer surface of described valve seat
It is provided with relay interface seat, switch interface seat and Self-sealing valve interface block correspondingly；It is characterized in that,
Described Self-sealing valve device includes that front portion is arranged on the self-styled valve pocket on described Self-sealing valve interface block, is fixed on certainly
The anterior spool guide of the inner chamber of envelope valve pocket, be positioned at the inner chamber of described self-styled valve pocket and be axially movable self-styled
Spool, self-styled spring between spool guide and self-styled spool and be connected to the cut-off of self-styled spool front end
Valve；
Described closeouts is arranged on the rearward end of described self-styled valve pocket；
When not having external transit joint, described Self-sealing valve device makes described Self-sealing valve airway close and makes described
Relay airway communicates with described switch airway；If after laying down described closeouts, by an inflation transit joint
Insert the inner chamber of described self-styled valve pocket from the rear end of described self-styled valve pocket and support in the rear end of described self-styled spool,
Make self-styled spool move forward a segment distance L1, make inflation transit joint respectively with described relay airway and
Described switch airway communicates；If after laying down described closeouts, by a verification transit joint from described self-styled valve pocket
Rear end insert self-styled valve pocket inner chamber supporting in the rear end of described self-styled spool, make self-styled spool move forward one
Segment distance L2, so that described switch airway is closed by described stop valve, and makes verification transit joint and relay
Device airway communicates.
The assembling of the sulfur hexafluoride gas density relay that can prevent maloperation the most according to claim 1 connects
Head, it is characterised in that described stop valve is the cut-off spool of an oral area being positioned at described Self-sealing valve airway.
The assembling of the sulfur hexafluoride gas density relay that can prevent maloperation the most according to claim 2 connects
Head, it is characterised in that described cut-off spool and described self-styled spool are an overall structure.
4. according to the dress of the sulfur hexafluoride gas density relay that can prevent maloperation described in Claims 2 or 3
Connector, it is characterised in that described cut-off spool is provided with cut-off sealing member, this cut-off sealing member be rubber ring,
Rubber blanket or sulfuration rubber parts on cut-off spool.
The assembling of the sulfur hexafluoride gas density relay that can prevent maloperation the most according to claim 1 connects
Head, it is characterised in that described stop valve is by being positioned at described switch airway Opposite direction connection at described Self-sealing valve
The checking-valve body of core front end, the cut-off sealing member being located on checking-valve body, the spring that is fixed on valve seat are fixed
The cut-off Self-sealing valve that part and the cutoff spring being located between checking-valve body and spring mountings are constituted.
The assembling of the sulfur hexafluoride gas density relay that can prevent maloperation the most according to claim 1 connects
Head, it is characterised in that the rear portion of described self-styled spool is provided with self-styled sealing member, this self-styled sealing member be rubber ring,
Rubber blanket or sulfuration rubber parts on self-styled spool.
The assembling of the sulfur hexafluoride gas density relay that can prevent maloperation the most according to claim 1 connects
Head, it is characterised in that be provided with some closure sealing members, these envelopes between described closeouts and described self-styled valve pocket
Stifled sealing member is rubber ring, rubber blanket or O.
The assembling of the sulfur hexafluoride gas density relay that can prevent maloperation the most according to claim 1 connects
Head, it is characterised in that on described relay interface seat, sealing arranges a non-return valve.
9. can prevent a fitting joint for the sulfur hexafluoride gas density relay of maloperation, contain including inside
The relay airway that is interconnected, switch airway and the valve seat of Self-sealing valve airway, Self-sealing valve device and
Closeouts；Corresponding relay airway, switch airway and Self-sealing valve airway on the outer surface of described valve seat
It is provided with relay interface seat, switch interface seat and Self-sealing valve interface block correspondingly；It is characterized in that,
Described Self-sealing valve device includes that front portion is arranged on the self-styled valve pocket on described Self-sealing valve interface block, is fixed on certainly
The anterior spool guide of the inner chamber of envelope valve pocket, be positioned at the inner chamber of described self-styled valve pocket and be axially movable self-styled
Spool, self-styled spring between spool guide and self-styled spool and be connected to self-styled spool front end and be positioned at
The ball valve of the oral area of described switch airway；
Described closeouts is arranged on the rearward end of described self-styled valve pocket；
When not having external transit joint, described Self-sealing valve device makes described Self-sealing valve airway close and makes described
Relay airway communicates with described switch airway；If after laying down described closeouts, by an inflation transit joint
Insert the inner chamber of described self-styled valve pocket from the rear end of described self-styled valve pocket and support in the rear end of described self-styled spool,
Make self-styled spool move forward a segment distance L1, make inflation transit joint respectively with described relay airway and
Described switch airway communicates；If after laying down described closeouts, by a verification transit joint from described self-styled valve pocket
Rear end insert self-styled valve pocket inner chamber and be connected to the rear end of described self-styled spool, make described self-styled spool move forward
Again described verification transit joint is rotated an effective angle α, so that described ball valve is by institute after a dynamic segment distance L2
State switch airway to cut off with relay airway, and make verification transit joint communicate with relay airway；
It is provided with self-locking connection mechanism between described verification transit joint and described self-styled spool.
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| CN201310335407.5A CN103367030B (en) | 2013-08-02 | 2013-08-02 | The fitting joint of the sulfur hexafluoride gas density relay of maloperation can be prevented |
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| CN201310335407.5A CN103367030B (en) | 2013-08-02 | 2013-08-02 | The fitting joint of the sulfur hexafluoride gas density relay of maloperation can be prevented |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154356A (en) * | 2014-07-23 | 2014-11-19 | 国家电网公司 | Joint for measuring sulfur hexafluoride water content of unit switch |
| CN104299845B (en) * | 2014-10-21 | 2018-02-06 | 上海乐研电气有限公司 | A kind of gas density relay that does not have to dismounting and just can directly verify |
| CN106122525B (en) * | 2016-06-24 | 2019-02-01 | 广州白云电器设备股份有限公司 | A kind of inflation valve seat can be used for online calibration |
| CN105972252B (en) * | 2016-06-24 | 2019-02-01 | 广州白云电器设备股份有限公司 | A kind of inflation valve seat can be used for online calibration |
| CN108010796B (en) * | 2018-01-12 | 2020-06-16 | 上海乐研电气有限公司 | Gas density relay |
| CN108231476B (en) * | 2018-01-12 | 2020-06-16 | 上海乐研电气有限公司 | Gas density relay |
| CN108461348A (en) * | 2018-03-23 | 2018-08-28 | 广东电网有限责任公司汕头供电局 | A kind of multipurpose sulfur hexafluoride gas density relay device |
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| CN201327795Y (en) * | 2008-11-06 | 2009-10-14 | 上海卓电电气有限公司 | Assembly joint for checking SF* gas density controller in SF* electric switch |
| CN201820704U (en) * | 2010-09-01 | 2011-05-04 | 上海乐研电气科技有限公司 | Connecting device for checking gas density relay |
| CN203445056U (en) * | 2013-08-02 | 2014-02-19 | 上海乐研电气科技有限公司 | Misoperation prevention type sulfur hexafluoride gas density relay fitting joint |
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| JPS63117274A (en) * | 1986-11-05 | 1988-05-21 | Mitsubishi Electric Corp | Internal abnormality detector for gas sealed type electric apparatus |
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| CN201327795Y (en) * | 2008-11-06 | 2009-10-14 | 上海卓电电气有限公司 | Assembly joint for checking SF* gas density controller in SF* electric switch |
| CN201820704U (en) * | 2010-09-01 | 2011-05-04 | 上海乐研电气科技有限公司 | Connecting device for checking gas density relay |
| CN203445056U (en) * | 2013-08-02 | 2014-02-19 | 上海乐研电气科技有限公司 | Misoperation prevention type sulfur hexafluoride gas density relay fitting joint |
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Effective date of registration: 20161228 Address after: 200000 Shanghai City, Jiading District Nanxiang Town, Yun North Road 1755 Lane 21, B zone four Patentee after: Shanghai joy Electric Co., Ltd. Address before: Qingpu District of Shanghai city Shen brick road building 200237 new No. 221 Building 1 B zone 1 room 123 Patentee before: Shanghai Roye Electronic Science & Technology Co., Ltd. |