CN206669148U - A kind of anti-dropout sulfur hexafluoride detection tabs - Google Patents
A kind of anti-dropout sulfur hexafluoride detection tabs Download PDFInfo
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- CN206669148U CN206669148U CN201720389741.2U CN201720389741U CN206669148U CN 206669148 U CN206669148 U CN 206669148U CN 201720389741 U CN201720389741 U CN 201720389741U CN 206669148 U CN206669148 U CN 206669148U
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- adapter sleeve
- bulge loop
- dropout
- sulfur hexafluoride
- detection tabs
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Abstract
The utility model discloses a kind of anti-dropout sulfur hexafluoride detection tabs, including thimble pipe and attaching nut, the threaded portion for being connected to the self-enclosed non-return valve of equipment under test is provided with the inside of attaching nut one end, the other end sets the salable one end for snapping fit onto adapter sleeve of inward flange, adapter sleeve inner seal sleeve is connected to thimble pipe, its other end is combined with inside spring pressing nut one end, compression spring is provided with adapter sleeve, the stepped hole that compression spring one end acts against adapter sleeve is inner, the other end acts against the inner face of the bulge loop two on thimble tubing string face, the spring pressing nut other end is provided with the outer face that inward flange snaps fit onto the bulge loop one on thimble tubing string face, spacing jump ring one is provided with the inside of step outer end of hole, spacing jump ring one is between bulge loop one and bulge loop two, its internal diameter is less than bulge loop one and the external diameter of bulge loop two.The utility model can avoid gas from leaking suddenly, it is ensured that operation is reliable and secure, and operation is time saving and energy saving, and the efficiency of loading and unloading greatly improves.
Description
Technical field
A kind of anti-dropout sulfur hexafluoride detection tabs are the utility model is related to, belong to power equipment safety technical field.
Background technology
With the development of power industry, the GIS device of dielectric, breaker, current transformer etc. are used as using SF6 gases
Electrical equipment is widely applied.Sulfur hexafluoride electrical equipment needs periodically to take gas to be detected at charge valve, and current more than 90%
Charge valve be self-enclosed check valve-type.When being detected to sulfur hexafluoride electrical equipment, self-enclosed non-return valve is due to impurity, rust
Erosion or other reasons there may be bite and be unable to reset case.Traditional detection tabs thimble is fixed, and is finished in experiment,
Detection tabs exterior nut cap must all be exited into thimble could exit therewith, once now self-enclosed non-return valve bite can not answer
, the sulfur hexafluoride gas in equipment will release rapidly, it will bring great safety wind to personnel, power network, equipment and environment
Danger.
On April 2nd, 2015, certain office are carrying out chemical prerun to the breaker of 220kV disk ammonia line 202, are being completed, remove
The moment of detection tabs, the self-enclosed non-return valve of occurrence of equipment can not reset, and SF6 gas serious leaks, 3 staff use immediately
Detection tabs block to the self-enclosed non-return valve of equipment by force, and because pressure is larger, closure is difficult, are just used by 5,6 minutes
Detection tabs are blocked temporarily, and now equipment pressure has dropped down to alarming value.This time failure need to obtain timely processing, not cause bigger
Equipment, grid event, but also result in certain loss and the physically and mentally healthy injury of personnel.
The spring pressing nut of existing anti-pressure release sulfur hexafluoride detector does not have obvious secure ID or safety when exiting
Pin, there may be stage clip nut during use and thimble pipe comes off the security risk for causing gas to leak, and even if having peace
Full mark, operator can be also allowed to pay attention to rotating the distance of spring pressing nut at any time, operation is wasted time and energy, and operation is meticulous, easily leads
Cause the efficiency of loading and unloading low.
The content of the invention
The technical problems to be solved in the utility model is：A kind of anti-dropout sulfur hexafluoride detection tabs are provided, can be to top
Needle tubing progress is spacing, plays a part of safe spacing, operation is time saving and energy saving, and the efficiency of loading and unloading greatly improves, to solve prior art
Present in problem.
The technical scheme that the utility model is taken is：A kind of anti-dropout sulfur hexafluoride detection tabs, including thimble pipe and company
Connected nut, the threaded portion for being connected to the self-enclosed non-return valve of equipment under test is provided with the inside of attaching nut one end, in the other end is set
The salable one end for snapping fit onto adapter sleeve of flange, adapter sleeve inner seal sleeve are connected to thimble pipe, and its other end is combined with stage clip spiral shell
Inside female one end, compression spring is provided with adapter sleeve, the stepped hole that compression spring one end acts against adapter sleeve is inner, the other end
The inner face of the bulge loop two on thimble tubing string face is acted against, the spring pressing nut other end is provided with inward flange and snaps fit onto thimble tubing string face
On bulge loop one outer face, be provided with spacing jump ring one on the inside of step outer end of hole, spacing jump ring one is located at bulge loop one and bulge loop
Between two, its internal diameter is less than bulge loop one and the external diameter of bulge loop two.
Preferably, spacing jump ring two is provided with above-mentioned thimble pipe, the spacing lower end of jump ring two snaps fit onto the interior of spring pressing nut
Flange outer end face.
Preferably, above-mentioned thimble pipe inner end is arranged to concave spherical surface shape structure.
Preferably, above-mentioned adapter sleeve is provided with sealing gasket with coupling nut junction.
Preferably, above-mentioned thimble pipe keeps sealing by O-shaped packing ring and adapter sleeve.
Preferably, above-mentioned adapter sleeve the inner groove is provided with the O-shaped packing ring of sealing non-return valve inner tube lateral surface.
Preferably, above-mentioned spring pressing nut outer cylinder is provided with annular knurl.
Preferably, above-mentioned adapter sleeve lateral surface is provided with spanner clamping part, and spanner clamping part is two on adapter sleeve cylinder
Symmetrical plane.
Preferably, the internal thread part length of spring pressing nut is smaller than between above-mentioned bulge loop one and bulge loop two.
The beneficial effects of the utility model：Compared with prior art, effect of the present utility model is as follows：
（1）The utility model prevents that thimble pipe comes off from adapter sleeve during rollback thimble pipe, avoids by spacing jump ring one
Gas leaks suddenly, it is ensured that operation is reliable and secure, can be spacing to the progress of thimble pipe, plays a part of safe spacing, operation saves
Shi Shengli, the efficiency of loading and unloading greatly improve, and the utility model also has the characteristics of simple in construction, easy to operate low with cost；
（2）Built-in compression spring ensures the automatic rollback of anti-pressure release detection tabs thimble pipe；
（3）The seal means of being association of activity and inertia of multi-sealed circle encryption packing, ensure that the sealing of drainage pressure detection tabs
Energy；
（4）The thimble pipe end configuration of concave spherical surface, ensure the connection placed in the middle of equipment check valve lift pin and detection tabs, prevent
Jam faults caused by thimble dislocation connection；
（5）Spacing jump ring one can also play the effect of cushion seal, if the sealing of front end goes wrong, gas leakage
When, cushion seal is realized by spacing jump ring one and bulge loop one or bulge loop two, in time closed the valve of equipment under test, operation is more
Safety；
（6）The interval formed between bulge loop one and bulge loop two can realize nut movement effective travel control, avoid being pushed into
Cause valve damage or spring fatigue excessively to cause to damage, service life is longer more.
Brief description of the drawings
Fig. 1 is control structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with the accompanying drawings and the utility model is described further specific embodiment.
Embodiment 1：As shown in figure 1, a kind of anti-dropout sulfur hexafluoride detection tabs, including thimble pipe 8 and attaching nut 1,
The threaded portion for being connected to the self-enclosed non-return valve of equipment under test is provided with the inside of the one end of attaching nut 1, the other end sets inward flange can
Sealing snaps fit onto the one end of adapter sleeve 4, and the inner seal sleeve of adapter sleeve 4 is connected to thimble pipe 8, and its other end is combined with spring pressing nut 6
Inside one end, compression spring 5 is provided with adapter sleeve 4, the stepped hole 11 that the one end of compression spring 5 acts against adapter sleeve 4 is inner, separately
One end acts against the inner face of the bulge loop 2 10 on the cylinder of thimble pipe 8, and the other end of spring pressing nut 6 is provided with inward flange and snaps fit onto top
The outer face of bulge loop 1 on the cylinder of needle tubing 8, the outer end of stepped hole 11 inner side are provided with spacing jump ring 1, spacing jump ring one 7
Between bulge loop 1 and bulge loop 2 10, its internal diameter is less than bulge loop 1 and the external diameter of bulge loop 2 10, compression spring are located after freely extending
In compressive state, firm effect can be played.
Preferably, spacing jump ring 2 12 is provided with above-mentioned thimble pipe 8, the spacing lower end of jump ring 2 12 snaps fit onto spring pressing nut
6 inward flange outer face, by spacing jump ring 2 12, it on the one hand can play limitation spring pressing nut and be disconnected set abjection thimble
Pipe, the spacing jump ring of another aspect are crimped on spring pressing nut, it is possible to increase the intensity and rigidity of spring pressing nut outer end inward flange, even
Connect more stable, service life is longer.
Preferably, the above-mentioned inner end of thimble pipe 8 is arranged to concave spherical surface shape structure, and the thimble pipe of concave spherical surface can be docked to inverse
Only progress is self-positioning in valve, so as to prevent thimble tube top from jam faults occurring partially, further improves security.
Preferably, above-mentioned adapter sleeve 4 is provided with sealing gasket 2, sealing gasket combination O-ring seal with the junction of coupling nut 1
3, multiple sealing of being association of activity and inertia can be realized, ensure that the sealing property of anti-pressure release detection tabs, sealing effectiveness is more preferable, and seals
Pad 2 is fixed on the end Wai Zhihuan end faces of adapter sleeve 4, and attaching nut is movably socketed on adapter sleeve.
Preferably, above-mentioned thimble pipe 8 keeps sealing by O-shaped packing ring 3 and adapter sleeve 4, and O-ring seal 3 combines sealing gasket,
Multiple sealing of being association of activity and inertia can be realized, ensure that the sealing property of anti-pressure release detection tabs, sealing effectiveness is more preferable.
Preferably, above-mentioned 4 inner groove of adapter sleeve is provided with the O-shaped packing ring 3 of sealing non-return valve inner tube lateral surface, O-shaped close
Seal 3 combines sealing gasket, can realize multiple sealing of being association of activity and inertia, and ensure that the sealing property of anti-pressure release detection tabs, sealing
Effect is more preferable.
Preferably, the above-mentioned outer cylinder of spring pressing nut 6 is provided with annular knurl, and annular knurl can improve holding frictional force, improve operation
Security and grip are bigger, and sealing effectiveness is more preferable, can lock spring pressing nut with reference to spanner clamping part 13 more reliable.
Preferably, the above-mentioned lateral surface of adapter sleeve 4 is provided with spanner clamping part 13, and spanner clamping part 13 is on adapter sleeve cylinder
Two symmetrical planes, the sealing of the sealing gasket at adapter sleeve rotation failure attaching nut can be avoided by spanner clamping part
Property, and adapter sleeve rotation can accelerate the damage of sealing gasket, service life is shorter, in addition, can be further by spanner clamping part
Connection reliability is improved, and using spanner operator's operation can be allowed more laborsaving.
Preferably, the internal thread part length of spring pressing nut 6, the length are smaller than between above-mentioned bulge loop 1 and bulge loop 2 10
It is able to ensure that spring pressing nut is on adapter sleeve, and disclosure satisfy that the length for the valve for pushing non-return valve open, consequently facilitating next time makes
Used time directly turns spring pressing nut, and handling are more convenient faster, and efficiency further improves.
Operation principle：Before test, first anti-dropout detection tabs are connected by switch valve, pipeline and tester, confirmed
Spring pressing nut 6 is in loosening state, is reliably connected by coupling nut 1 and the self-enclosed non-return valve of tested device, fastens stage clip spiral shell
Mother 6 promotes thimble pipe 8 to drive thimble top to open up standby non-return valve, SF6Gas is detected through thimble pipe 8 into tester.Examination
Test and finish, first loosen spring pressing nut 6, thimble pipe 8 and thimble and retracted under the effect of compression spring 5, equipment check valve lift pin involution,
After pressure drops to zero, coupling nut 1 is exited, pulls down detection tabs.If spring pressing nut 6 is loosened until home（It is spacing
Jump ring fixed position）Pressure does not also decline, then judges that equipment non-return valve bite is unable to involution, can close the switch being connected with joint
Valve carries out emergency disposal, so as to prevent the quick pressure releasing of equipment.
Using effectively prevent after the utility model because non-return valve failure causes SF6Equipment fault caused by air venting,
The various risks and economic loss brought by equipment pressure release are directly reduced, solve the problems, such as part-structure understaffing, are had well
Economic benefit, safety benefit and environmental benefit：
1st, safety benefit：
1）The application of anti-dropout detection tabs, can avoid test when equipment pressure release caused by equipment, power grid security risk；
2）Reduce personnel's poisoning risk, the physically and mentally healthy wind particularly to caused by staff caused by equipment pressure release
Danger.
2nd, economic benefit：
Before the joint is not used, 1-2 occurs per annual and plays SF6Breaker pressure release failure, after the joint, is avoided
The generation of such failure.With every year occur 1 pressure release failure, circuit average load 30MW, each 48 hours fault outage time,
The average electricity price of 2016 is calculated by 561.47 yuan/kkWh：
Reduce electricity economic loss：
30MW × 48h × 1 × 561.47 yuan/kkWh=80.8 ten thousand yuan
Every SF6Breaker fills SF6Gas about 27kg, SF6About 45000 yuan/ton of gas price, the SF of saving6Gas damages
Mistake expense：0.027 × 45000=1215 yuan
The human cost of saving：
Labour cost:People × 2 day=5000 yuan of 500 yuan/people days times × 5；
Vehicle machine-team takes：750 yuan/day times × 2 day=1500 yuan
Calculated more than, annual direct economic benefit is：81.575 ten thousand yuan.
3rd, environmental benefit：
The application of anti-dropout detection tabs, avoid because equipment pressure release to air discharge substantial amounts of sulfur hexafluoride greenhouse gas
Body, there is good environmental benefit.
It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art can readily occur in change in the technical scope that the utility model discloses
Or replace, it should all cover within the scope of protection of the utility model, therefore, the scope of protection of the utility model should be with the power
The protection domain that profit requires is defined.
Claims (9)
- A kind of 1. anti-dropout sulfur hexafluoride detection tabs, it is characterised in that：Including thimble pipe（8）And attaching nut（1）, connect spiral shell It is female（1）The threaded portion for being connected to the self-enclosed non-return valve of equipment under test is provided with the inside of one end, the other end sets inward flange salable Snap fit onto adapter sleeve（4）One end, adapter sleeve（4）Inner seal sleeve is connected to thimble pipe（8）, its other end is combined with spring pressing nut （6）Inside one end, adapter sleeve（4）Inside it is provided with compression spring（5）, compression spring（5）One end acts against adapter sleeve（4）Step Hole（11）The inner, the other end act against thimble pipe（8）Bulge loop two on cylinder（10）Inner face, spring pressing nut（6）The other end It is provided with inward flange and snaps fit onto thimble pipe（8）Bulge loop one on cylinder（9）Outer face, stepped hole（11）It is provided with the inside of outer end Spacing jump ring one（7）, spacing jump ring one（7）Positioned at bulge loop one（9）With bulge loop two（10）Between, its internal diameter is less than bulge loop one（9） With bulge loop two（10）External diameter, thimble pipe（8）Spring pressing nut is stretched out in outer end（6）And there is threaded portion in end set.
- A kind of 2. anti-dropout sulfur hexafluoride detection tabs according to claim 1, it is characterised in that：Thimble pipe（8）On set It is equipped with spacing jump ring two（12）, spacing jump ring two（12）Lower end snaps fit onto spring pressing nut（6）Inward flange outer face.
- A kind of 3. anti-dropout sulfur hexafluoride detection tabs according to claim 1, it is characterised in that：Thimble pipe（8）It is inner Portion is arranged to concave spherical surface shape structure.
- A kind of 4. anti-dropout sulfur hexafluoride detection tabs according to claim 1, it is characterised in that：Adapter sleeve（4）With connecting Connected nut（1）Junction is provided with sealing gasket（2）.
- A kind of 5. anti-dropout sulfur hexafluoride detection tabs according to claim 1, it is characterised in that：Thimble pipe（8）Pass through O Type packing ring（3）With adapter sleeve（4）Keep sealing.
- A kind of 6. anti-dropout sulfur hexafluoride detection tabs according to claim 1, it is characterised in that：Adapter sleeve（4）It is inner Groove is provided with the O-shaped packing ring of sealing non-return valve inner tube lateral surface（3）.
- A kind of 7. anti-dropout sulfur hexafluoride detection tabs according to claim 1, it is characterised in that：Spring pressing nut（6）Outside Cylinder is provided with annular knurl.
- A kind of 8. anti-dropout sulfur hexafluoride detection tabs according to claim 1, it is characterised in that：Adapter sleeve（4）Outside Face is provided with spanner clamping part（13）, spanner clamping part（13）For two symmetrical planes on adapter sleeve cylinder.
- A kind of 9. anti-dropout sulfur hexafluoride detection tabs according to claim 1, it is characterised in that：Bulge loop one（9）With it is convex Ring two（10）Between be smaller than spring pressing nut（6）Internal thread part length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720389741.2U CN206669148U (en) | 2017-04-14 | 2017-04-14 | A kind of anti-dropout sulfur hexafluoride detection tabs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720389741.2U CN206669148U (en) | 2017-04-14 | 2017-04-14 | A kind of anti-dropout sulfur hexafluoride detection tabs |
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| CN206669148U true CN206669148U (en) | 2017-11-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630837A (en) * | 2019-09-25 | 2019-12-31 | 深圳供电局有限公司 | Adapter connector |
| CN111059391A (en) * | 2019-12-06 | 2020-04-24 | 深圳供电局有限公司 | Air charging system |
-
2017
- 2017-04-14 CN CN201720389741.2U patent/CN206669148U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630837A (en) * | 2019-09-25 | 2019-12-31 | 深圳供电局有限公司 | Adapter connector |
| CN111059391A (en) * | 2019-12-06 | 2020-04-24 | 深圳供电局有限公司 | Air charging system |
| CN111059391B (en) * | 2019-12-06 | 2021-11-23 | 深圳供电局有限公司 | Air charging system |
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