CN201298725Y - Fire-proof and explosion-proof unit for middle cable joint - Google Patents
Fire-proof and explosion-proof unit for middle cable joint Download PDFInfo
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- CN201298725Y CN201298725Y CNU2008200589726U CN200820058972U CN201298725Y CN 201298725 Y CN201298725 Y CN 201298725Y CN U2008200589726 U CNU2008200589726 U CN U2008200589726U CN 200820058972 U CN200820058972 U CN 200820058972U CN 201298725 Y CN201298725 Y CN 201298725Y
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- intermediate joint
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- cable intermediate
- cable
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Abstract
The utility model relates to a fire-proof and explosion-proof unit for a middle cable joint, which comprises a fire-proof wrapping band (1), fire-proof sections (9) and an explosion-proof sleeve (2); wherein, the middle joint (4) is wrapped by the fire-proof wrapping band (1); the fire-proof sections (9) are arranged on both ends; the middle joint (4) is firmly clamped by the explosion-proof sleeve (2); the fire-proof sections comprise damping baffles (204) and fire-proof cavities; the damping baffles are arranged close to the ports of both ends of the explosion-proof sleeve (2); the fire-proof cavities are located between the ports; and fire-proof blocking material (3) is filled in the fire-proof cavities. The fire-proof and explosion-proof unit for the middle cable joint has the advantages of simple structure, cheapness, hardness, durability, convenient assembly and excellent performance, and can be applied in the fire-proofing and explosion-proofing cases of the middle cablejoints of various voltage classes.
Description
Technical field
The utility model relates to a kind of cable protective device, more particularly, the utility model relates to the fire prevention of a kind of cable intermediate joint, anti-explosion unit, and described cable intermediate joint fire prevention, anti-explosion unit can prevent that cable intermediate joint is because of coming in contact the generation of the on fire even explosion accident of electric arc flashover that factor such as bad causes.
Background technology
Cable is electric power, electrical engineering operation imperative equipment, and it is again electric power, the requisite operation of electrical engineering operation that cable connects.This be because, made on the one hand, transported, the influence of factor such as construction, heavy in section drum length of cable is restricted, on the other hand, in the electrical installation project, the needed cable length of actual use at this moment, just need couple together cable sometimes considerably beyond the maximum factory length of cable in the centre.
The junction of cable is exactly the transition joint of cable.In whole cable, the performance of the transition joint of cable is very fragile, tends to dodge because of insulation breakdown, electric arc fault such as iron and cause cable intermediate joint to catch fire, burst.Cable intermediate joint catches fire and not only can injure the cable that cable own also can bring disaster to adjacent loop and burnt.The explosive that is produced when in addition, cable bursts probably can produce mechanical damage to the cable of adjacent loop.According to statistics, cable fire, the explosion accident that causes because of the cable end fault accounts for sizable ratio of cable fault total amount, so strengthen the fire prevention to cable intermediate joint, anti-fried prevention is the necessary condition that ensures Supply Security and reliability.
The fire prevention measure that adopts is a lot of at present, and wherein a kind of method is to add elements such as copper sheathing, double end nut, cover porcelain tube to carry out fire protection flame retarding in cable intermediate joint.Yet as shown in Figure 1, except clamp nut and bolt, also comprise: 101 are earthenware A, and 102 is earthenware B, and 103 is that double end nut 104 is copper sheathing, and 105 is metal shell, and 106 is core, and 107 is cable.This device causes the cable intermediate joint complex structure, and can not adapt to the cable intermediate joint of various electric pressures.
On the other hand; the anti-fried measure of adopting at present is also a lot, and wherein a kind of method is to add rubber cover in cable intermediate joint, promptly uses the protective layer of a kind of elastomeric material of tubulose as cable joint; and at the passage of rubber open interior as the plain conductor joint, the rubber end socket is adopted at two ends.But, as shown in Figure 2, comprising: inner core 301, terminal 302, pipe box 303, end socket 304, through hole 305, opening.This device can not adapt to the cable intermediate joint of various electric pressures equally, and can't be simultaneously as fire prevention, the anti-explosion unit of cable intermediate joint.
Again for example, the patent No. provides a kind of cable joint special fireproof cover for the Chinese utility model patent of " 200620128063.6 ".Its basic structure comprises the sleeve pipe that is arranged at the cable joint place, and sleeve pipe is provided with the fire prevention cavity, fills fire proofing material in the cavity.Described sleeve pipe split is provided with, and is fixed by the screw that the side is provided with, and casing wall is provided with fire proofing material can hole.The two ends diameter of described sleeve pipe is corresponding with cable size.The technical scheme that this utility model adopts is compared with the existing cable swagelok, and its technological progress effect shows: 1. during thermal explosion, rapidly electric arc is put out; 2. adopt inorganic fireproof material shell and arc quenching material to fill, have insulating properties, fire line and certain intensity.Yet the anti-fried measure of this patent is not enough.
As mentioned above, also do not have at present a kind ofly can satisfy the cable intermediate joint fire prevention and can prevent fried device again simultaneously, therefore, up to now, people still can not effectively prevent on fire or influencing each other of exploding between the adjacent cable.
The utility model content
The purpose of the utility model patent is the deficiency that overcomes on the prior art, a kind of cable intermediate joint fire prevention, anti-fried device are provided, described cable intermediate joint is prevented fires, anti-fried device is not only simple in structure, cheap, and it is sturdy and durable, easy for installation, superior performance can be adapted to the cable intermediate joint fire prevention of various electric pressures, anti-fried occasion.
For achieving the above object, cable intermediate joint of the present utility model is prevented fires, anti-fried apparatus structure is as follows.
A kind of cable intermediate joint fire prevention, anti-fried device, described device comprises band and the sleeve pipe of wrapping up outside cable intermediate joint, it is characterized in that, described band is the fire protection flame retarding band, wraps up the periphery in cable intermediate joint; Described sleeve pipe is made up of 2 chucks for anti-fried sleeve pipe, and chuck is clamped on wrapping both sides about the cable intermediate joint periphery of fire protection flame retarding band; Be provided with the fire prevention section in the port at anti-fried sleeve pipe two ends, described fire prevention section is made of the cavity between damping baffle plate that is provided with in the port side place near anti-fried sleeve pipe two ends and the anti-fried sleeve port, and in cavity, clog the fire prevention calking of some, described fire prevention calking is the anti-chamotte of solid plasticity.
According to above-mentioned, described fire protection flame retarding band is the fire-retardant band of ZFBD type tack, and wrapping is at the skin of cable intermediate joint, and is the center with the cable intermediate joint, and 1450-1800mm is respectively extended on both sides.The fire protection flame retarding band has high flame retardant, self-adhesion, tension, water-fast, oil resistant, chemical-resistant reagent, characteristic such as does not ftracture, do not peel off.When cable intermediate joint was on fire, the carburization zone that the fire protection flame retarding band forms heat insulation resistance oxygen played protection to the cable that is twined, thereby stoped flame to prolong cable expansion burning.In addition, when external environment was on fire, band can protect cable intermediate joint to be without prejudice within a certain period of time, and the guarantee cable is normally transmitted electricity.
In addition, adopting the mode of chuck is to be convenient to cable laying and maintenance, cable intermediate joint make the back or installation or removal easily after the cable maintenance.Described resistance mud baffle plate is installed in the two ends of semicircle chuck.The effect of resistance mud baffle plate is the excessive filling in semicircle chuck of restriction fire prevention calking.
Again, described fire prevention calking is packed in the port at anti-fried sleeve pipe two ends, and extends to certain distance in the sleeve pipe.Fire prevention calking has characteristics such as fire resistance period is long, the amount of being fuming is low, back-fire relief resistance cigarette is effective.And have performances such as water-fast, oil resistant, corrosion-resistant, salt water resistance, no swelling.Fire resistance period reaches 200 minutes, therefore can defend extraneous influence to cable intermediate joint on fire effectively.
Again, described fire prevention calking can stop moisture, foreign material to enter pipe interior, and its taste bitterness can effectively prevent the infringement of mouse to cable intermediate joint.In addition, when anti-fried inside pipe casing produced high pressure because of short trouble in short-term, described fire prevention calking also had the release effect, in order to avoid prevent that when fried sleeve pipe is blown because of high pressure adjacent cable being produced bump threatens.
According to cable intermediate joint fire prevention described in the utility model, anti-fried device, preferably, described chuck is the semicircle chuck of the hot-rolled stainless steel control of symmetrical configuration.
In view of the above, owing to adopt stainless steel, can realize etch-proof preferably performance and anticollision performance.
According to cable intermediate joint fire prevention described in the utility model, anti-fried device, preferably, described chuck is by chuck connecting piece clamping.
According to cable intermediate joint fire prevention described in the utility model, anti-fried device, preferably, described connector is the L type connecting plate of corrosion resistant plate system.
According to cable intermediate joint fire prevention described in the utility model, anti-fried device, preferably, the L type connecting plate of described corrosion resistant plate system, L type connecting plate has radian on one side, on one side for not with the rectangle of radian, be connected by welding manner between one side that radian arranged and the semicircle chuck, do not have the center on one side of radian to have the circular hole of the usefulness that coupling bolt is installed.
According to cable intermediate joint fire prevention described in the utility model, anti-fried device, preferably, band and the sleeve pipe wrapped up outside cable intermediate joint are the center with the cable intermediate joint, and each length of extending of both sides is 1450-1800mm.
According to cable intermediate joint fire prevention described in the utility model, anti-fried device, preferably, described chuck connecting piece is provided with the 3-6 pair altogether whole section cable intermediate joint section.
According to cable intermediate joint fire prevention described in the utility model, anti-fried device, preferably, described chuck connecting piece is provided with 6 pairs altogether whole section cable intermediate joint section.
According to cable intermediate joint fire prevention described in the utility model, anti-fried device, preferably, described semicircle chuck is installed in the upper and lower both sides of cable intermediate joint, and its port shape is a horn mouth.
Thus, easy for installation, can prevent stainless cutting edge of a knife or a sword injury of mouth cable.
According to cable intermediate joint fire prevention of the present utility model, anti-fried device, preferably, above-mentioned resistance mud baffle plate is installed in the two ends of semicircle chuck, and apart from end 80-130mm, the degree of depth that described fire prevention calking is filled in the anti-fried sleeve pipe also is between 80-130mm.
According to cable intermediate joint fire prevention of the present utility model, anti-fried device, described cable intermediate joint is prevented fires, anti-fried device is not only simple in structure, cheap, and it is sturdy and durable, easy for installation, superior performance can be adapted to the cable intermediate joint fire prevention of various electric pressures, anti-fried occasion.
The simple declaration of accompanying drawing
Fig. 1 is the cable intermediate joint fire resistive construction schematic diagram that uses now.
Fig. 2 is the cable intermediate joint blast resistance construction schematic diagram that uses now.
Fig. 3 is the anti-fried sleeve pipe fire prevention section of a utility model place structure cutaway view.
Fig. 4 A, B, C are respectively anti-fried sleeve structure front view, vertical view and end views of the utility model embodiment.
Among the figure, 1 is fire-retardant band, and 2 are anti-fried sleeve pipe, and 3 is fire prevention calking, and 4 is cable intermediate joint, and 9 are the fire prevention section, and 201 is semicircle chuck, and 202 is chuck connector (plate), and 203 is earth stud, and 204 are resistance mud baffle plate.
Five, embodiment
Referring to Fig. 3, the feature of described device is that this device is made up of three parts such as fire protection flame retarding band 1, anti-fried sleeve pipe 2 and fire prevention calkings 3.
Described band is the fire protection flame retarding band, wraps up the periphery in cable intermediate joint; Described sleeve pipe is made up of 2 chucks for anti-fried sleeve pipe, and chuck is clamped on wrapping both sides about the cable intermediate joint periphery of fire protection flame retarding band; Be provided with the fire prevention section in the port at anti-fried sleeve pipe two ends, described fire prevention section is made of the cavity between damping baffle plate set near the port at anti-fried sleeve pipe two ends and anti-fried sleeve port, and in cavity the filling some fire prevention calking, described fire prevention calking is the anti-chamotte of the solid plasticity of rufous, its model is DFD-III (A) type, has characteristics such as fire resistance period is long, the amount of being fuming is low, back-fire relief resistance cigarette is effective.
The cold-shrink type three-phase transition joint that described cable intermediate joint 4 is the 35KV high-tension cable, its model is JYZ-35,3*240, its external diameter is 86mm.The skin that described fire protection flame retarding band 1 is pricked at cable intermediate joint 4, and be the center with the cable intermediate joint, each development length of both sides is 1500mm.The model of fire protection flame retarding band is ZFBD, has high flame retardant, self-adhesion, tension, water-fast, oil resistant, chemical-resistant reagent, characteristic such as does not ftracture, do not peel off.
Fire-retardant band 1 connects wrapped in cable intermediate joint 4 and both sides thereof with 1/2 amplitude tower of bandwidth, twining thickness is 3 layers.Like this, can realize that good fire protection flame retarding does not have influence to the ampacity of cable again.
The maximum characteristics life-span of fire prevention band 1 is long, and its life-span can be close with the life-span of cable, even surpassed the useful life of cable.With fire resistance, the ZFBD type fire prevention band that present embodiment adopted is close with the performance of category-A high flame-retardant cable, but the price considerably cheaper.And, the environment that suitable cable trough lays.
Referring to Fig. 4, the feature of described anti-fried sleeve pipe 2 is this anti-fried sleeve pipe 201,12 chuck connecting plates of semicircle chuck by 2 symmetrical configuration, and 203,2 resistances of 1 earth stud mud baffle plate 204 is formed.Wherein, connecting plate 202 is a connecting plate, and the feature of semicircle chuck 201 is that to adopt diameter be that the hot-rolled stainless steel pipe of 108mm is made, its material is 1Cr18Ni9Ti, thickness is 4.5, and length is 3000mm, and adopting stainless steel is in order to realize etch-proof preferably performance and anticollision performance.The semicircle chuck 201 of described 2 symmetrical configuration is installed in the both sides up and down of cable intermediate joint 4.The port of semicircle chuck 201 has horn mouth, to prevent stainless cutting edge of a knife or a sword injury of mouth cable.
Described steel pipe connecting plate 202 is installed in the middle part and the mouth of pipe two ends of semicircle chuck 201 respectively, and its medial end portions connecting plate is respectively apart from mouth of pipe end 120mm.Described chuck connecting plate 202 is made by the corrosion resistant plate of 40*30*3mm, makes the L type.Wherein have one of circular arc with semicircle chuck 201 between be connected by welding manner, do not have the center of the other end of circular arc to have the circular hole of 1 14mm, for the usefulness that coupling bolt is installed.
Be fixed together by 1 stainless steel bolt, 1 stainless steel nut, 1 stainless steel zero diopter pad, 1 stainless steel spring pad between upper and lower 2 chuck connecting plates 202 of semicircle chuck 201 same horizontal levels, adopting the purpose of stainless steel is to be convenient to the maintenance of cable in the future.Described earth stud 203 is installed in the end of semicircle chuck 201, apart from semicircle chuck 201 end 40mm, its effect is that the ground connection band steel in anti-fried sleeve pipe and the cable trough (is belonged to other devices, do not draw) do the metallicity connection, maintenance personal's safety when insulation breakdowns taking place with guarantee cable intermediate joint 4.It is to be convenient to the related cable of present embodiment change its course and lay or keep in repair that anti-fried sleeve pipe 2 adopts the mode of chucks.Described resistance mud baffle plate 204 is installed in the two ends of semicircle chuck 201, apart from end 100mm.Resistance mud baffle plate 204 is made up of two blocks of semi-circular book plates, and its external diameter is 106mm, and internal diameter is 84mm, adopts the thick 1Cr18Ni9Ti corrosion resistant plate of 1mm.2 resistance mud baffle plates 204 weld with 2 semicircle chucks 201 respectively.The effect of resistance mud baffle plate is the excessive filling in semicircle chuck 201 of restriction fire prevention calking 3.Between 2 resistance mud baffle plates 204, can form another cavity.
The model of described fire prevention calking is DFD-III (A), is the anti-chamotte of solid plasticity of rufous, and described fire prevention calking is packed in the port at anti-fried sleeve pipe 2 two ends, and the degree of depth that is filled in the anti-fried sleeve pipe 2 is 100mm.To prevent earlier before the filling that the dirt on fried sleeve pipe 2 and the cable intermediate joint 4 cleans out, and remove surface and oil contaminant and dust.
When cable intermediate joint 4 was on fire, the carburization zone of the fire protection flame retarding band 1 heat insulation resistance oxygen that forms played protection to the cable intermediate joint 4 that is twined, thereby stoped flame to prolong cable intermediate joint 4 expansion burnings.In addition, when external environment was on fire, fire-retardant band 1 can protect intermediate cable head 4 to be without prejudice within a certain period of time, ensured the normal operation of transmission of electricity.
The model of fire prevention calking is DFD-III (A), is applicable to the fireproof blocking in perforated holes such as cables such as building, power plant, electric substation, petrochemical industry, industrial and mineral and pipeline, slit.This product has characteristics such as fire resistance period is long, the amount of being fuming is low, back-fire relief resistance cigarette is effective, and has good plasticity, and easy construction is changed, the increase and decrease cable is easy, and has performances such as water-fast, oil resistant, corrosion-resistant, salt water resistance, no swelling.Fire resistance period reaches 200 minutes, and therefore the extraneous influence to described cable intermediate joint 4 on fire of time enough defence is arranged.DFD-III (A) type cable fire-proof putty also can be used in combination with other plugging material (tachy sterol as the SFD-II type fire prevention calking, PFB expansion type cable fire prevention bag etc.).
In addition, DFD-III (A) taste bitterness can effectively prevent the infringement of mouse to middle cable end.In addition, described fire prevention calking can stop moisture, foreign material to enter pipe interior.When anti-fried inside pipe casing produced high pressure because of short trouble in short-term in, described fire prevention calking also had the release effect, clashed into threat in order to avoid anti-fried sleeve pipe 2 produces adjacent cable when blowing because of high pressure.
Cable intermediate joint 4 is the three-phase transition joint of 10KV high-tension cable, be used for the cable butting that model is YJV22-10,3*50, overall dimensions are 55mm, it is 80mm that semicircle chuck 201 adopts diameter, the external diameter of resistance mud baffle plate 204 is 78mm, and internal diameter is 53mm, and above-mentioned resistance mud baffle plate is installed in the two ends of semicircle chuck, apart from end 80mm, the degree of depth that described fire prevention calking is filled in the anti-fried sleeve pipe also is between the 80mm.Other make cable intermediate joint fire prevention of the present utility model, anti-fried device as embodiment 1.
Cable intermediate joint 4 is the single-phase transition joint of 220KV high-tension cable, be used for the cable butting that model is JYLWO3-220,1*300, overall dimensions are 105mm, it is 158mm that semicircle chuck 201 adopts diameter, the external diameter of resistance mud baffle plate 204 is 156mm, and internal diameter is 103mm, and above-mentioned resistance mud baffle plate is installed in the two ends of semicircle chuck, apart from end 110mm, the degree of depth that described fire prevention calking is filled in the anti-fried sleeve pipe also is between the 110mm.Other make cable intermediate joint fire prevention of the present utility model, anti-fried device as embodiment 1.
Except band and the sleeve pipe wrapped up in cable intermediate joint are the center with the cable intermediate joint, each development length of both sides is outside 1600-1750mm, and other make cable intermediate joint fire prevention of the present utility model, anti-fried device as embodiment 1.
The utility model has following advantage compared to existing technology: simple in structure, can prevent fires and can prevent exploding, both Can stop the on fire of cable intermediate joint self or blast can effectively prevent adjacent electricity again to the impact of adjacent cable On fire or the blast of cable is to the impact of described cable intermediate joint. In addition, also have cheap, easy for installation, Long service life, durable fire prevention reliable, the cable intermediate joint that satisfies the various models of various electric pressures are anti-fried The characteristics such as needs.
Claims (9)
1. a cable intermediate joint is prevented fires, is prevented fried device, and described device comprises band and the sleeve pipe of wrapping up outside cable intermediate joint, it is characterized in that, described band (1) is the fire protection flame retarding band, wraps up in the periphery of cable intermediate joint (4); Described sleeve pipe (2) is made up of 2 chucks (201) for anti-fried sleeve pipe, and chuck is clamped on wrapping both sides about cable intermediate joint (4) periphery of fire protection flame retarding band; Be provided with fire prevention section (9) in the port at anti-fried sleeve pipe (2) two ends, described fire prevention section is made of the cavity between damping baffle plate (204) set near the port at anti-fried sleeve pipe two ends and anti-fried sleeve port, and filling has fire prevention calking (3) in cavity, and described fire prevention calking is the anti-chamotte of solid plasticity.
2. cable intermediate joint fire prevention according to claim 1, anti-fried device is characterized in that, described chuck (201) is the semicircle chuck of the hot-rolled stainless steel control of symmetrical configuration.
3. cable intermediate joint fire prevention according to claim 1, anti-fried device is characterized in that described chuck (201) is by chuck connecting piece (202) clamping.
4. cable intermediate joint fire prevention according to claim 3, anti-fried device is characterized in that described chuck connector (202) is the L type connecting plate of corrosion resistant plate system.
5. cable intermediate joint fire prevention according to claim 4, anti-fried device, it is characterized in that, be connected by welding manner between the L type connecting plate of described corrosion resistant plate system, one head and semicircle chuck, the center of other end has the circular hole of the usefulness that coupling bolt is installed.
6. cable intermediate joint fire prevention according to claim 1, anti-fried device is characterized in that band (1) and the sleeve pipe (2) wrapped up outside cable intermediate joint are the center with the cable intermediate joint, and each development length of both sides is at 1450-1800mm.
7. cable intermediate joint fire prevention according to claim 1, anti-fried device is characterized in that described chuck connecting piece (202) is provided with the 3-6 pair altogether whole section cable intermediate joint section.
8. cable intermediate joint fire prevention according to claim 1, anti-fried device is characterized in that described semicircle chuck (201) is installed in the upper and lower both sides of intermediate cable head, and its port shape is a horn mouth.
9. cable intermediate joint fire prevention according to claim 1, anti-fried device, it is characterized in that, above-mentioned damping baffle plate (204) is installed in the two ends of semicircle chuck (201), apart from end 80-130mm, the degree of depth that described fire prevention calking (3) is filled in the anti-fried sleeve pipe also is between the 80-130mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200589726U CN201298725Y (en) | 2008-05-26 | 2008-05-26 | Fire-proof and explosion-proof unit for middle cable joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200589726U CN201298725Y (en) | 2008-05-26 | 2008-05-26 | Fire-proof and explosion-proof unit for middle cable joint |
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| CN201298725Y true CN201298725Y (en) | 2009-08-26 |
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| CNU2008200589726U Expired - Fee Related CN201298725Y (en) | 2008-05-26 | 2008-05-26 | Fire-proof and explosion-proof unit for middle cable joint |
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| CN (1) | CN201298725Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761093A (en) * | 2012-06-19 | 2012-10-31 | 江苏科耐特高压电缆附件有限公司 | Flame-retardant type glass steel anti-explosion shell of intermediate connector |
| CN103901565A (en) * | 2014-04-02 | 2014-07-02 | 国家电网公司 | Sealing suspension ring of optical cable protection tube port |
| CN105958427A (en) * | 2016-06-06 | 2016-09-21 | 济南轩天机电科技有限公司 | Fireproof and explosion-proof device for power project cable joint and use method thereof |
| CN105977899A (en) * | 2016-05-11 | 2016-09-28 | 姜涛 | Fireproof explosion-proof device for intermediate joint of power cables |
| CN106711918A (en) * | 2016-11-30 | 2017-05-24 | 广东安诺新材料科技有限公司 | Double protection cable intermediate joint safety box provided with inner container and fully filled with fireproofing mud |
| CN107419662A (en) * | 2017-08-23 | 2017-12-01 | 柳州欧维姆机械股份有限公司 | A kind of Ha Fushi Novel fireproofs drag-line and preparation method thereof |
| CN109256743A (en) * | 2018-10-22 | 2019-01-22 | 深圳市沃尔核材股份有限公司 | A kind of cable intermediate joint and attaching method thereof |
| CN110867803A (en) * | 2019-11-28 | 2020-03-06 | 国网山东省电力公司电力科学研究院 | GIS wall-penetrating bus shell corrosion reinforcing and protecting method |
-
2008
- 2008-05-26 CN CNU2008200589726U patent/CN201298725Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761093A (en) * | 2012-06-19 | 2012-10-31 | 江苏科耐特高压电缆附件有限公司 | Flame-retardant type glass steel anti-explosion shell of intermediate connector |
| CN103901565A (en) * | 2014-04-02 | 2014-07-02 | 国家电网公司 | Sealing suspension ring of optical cable protection tube port |
| CN103901565B (en) * | 2014-04-02 | 2016-06-15 | 国家电网公司 | Optical cable protection tube port sealing hangs circle |
| CN105977899A (en) * | 2016-05-11 | 2016-09-28 | 姜涛 | Fireproof explosion-proof device for intermediate joint of power cables |
| CN105958427A (en) * | 2016-06-06 | 2016-09-21 | 济南轩天机电科技有限公司 | Fireproof and explosion-proof device for power project cable joint and use method thereof |
| CN106711918A (en) * | 2016-11-30 | 2017-05-24 | 广东安诺新材料科技有限公司 | Double protection cable intermediate joint safety box provided with inner container and fully filled with fireproofing mud |
| CN107419662A (en) * | 2017-08-23 | 2017-12-01 | 柳州欧维姆机械股份有限公司 | A kind of Ha Fushi Novel fireproofs drag-line and preparation method thereof |
| CN109256743A (en) * | 2018-10-22 | 2019-01-22 | 深圳市沃尔核材股份有限公司 | A kind of cable intermediate joint and attaching method thereof |
| CN110867803A (en) * | 2019-11-28 | 2020-03-06 | 国网山东省电力公司电力科学研究院 | GIS wall-penetrating bus shell corrosion reinforcing and protecting method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20130526 |