CN105023660A - Seal structure of hollow composite insulator - Google Patents
Seal structure of hollow composite insulator Download PDFInfo
- Publication number
- CN105023660A CN105023660A CN201410175057.5A CN201410175057A CN105023660A CN 105023660 A CN105023660 A CN 105023660A CN 201410175057 A CN201410175057 A CN 201410175057A CN 105023660 A CN105023660 A CN 105023660A
- Authority
- CN
- China
- Prior art keywords
- flange
- hermetically
- insulated tube
- rectangular
- rectangular seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The present invention provides a seal structure of a hollow composite insulator. The seal structure comprises a flange, an insulation tube is installed inside the flange, an umbrella sleeve sleeves the insulation tube and is installed above the flange, a low groove seal structure is disposed between an upper end of a bottom side wall of the flange and a bottom ring part of the insulation tube, a side wall seal structure is disposed between a side wall face of the flange and a tube wall of the insulation tube, a top groove seal structure is disposed among the flange, the insulation tube and the umbrella sleeve, rectangular seal rings are disposed inside the low groove seal structure, the side wall seal structure and the top groove seal structure, and a seal bottom is disposed at the bottom part of the flange, has a rectangular structure and coordinates closely with the rectangular seal ring. The seal structure of the hollow composite insulator has top part, side wall and bottom part seal structures, rainwater and air from outside are insulated from the outside, a filling agent inside is prevented from leaking to the outside, rectangular seal rings and rectangular seal structures coordinating with the rectangular seal rings are adopted, and with adoption of the rectangular seal structures, contact areas during sealing are increased, and the sealing effect is excellent.
Description
Technical field
The present invention relates to hollow combined insulator field, be specifically related to the hermetically-sealed construction of hollow combined insulator.
Background technology
Hollow insulator is the important component part of high-voltage transforming station equipment, and under it is chronically exposed to atmospheric environment, Analysis of End Electric Field is comparatively concentrated, and easy flashing electric discharge or local arc etc. are deteriorated.The quality of hollow combined insulator directly has influence on the reliability of high-voltage transforming station equipment and the fail safe of operation of power networks, therefore, need to ensure that the insulated tube of hollow combined insulator is not subject to the etch of rainwater, once moisture enters leaching, in addition corona catalysis will make the quality of insulated tube fission, but, the sealing of existing hollow combined insulator is only taked to smear marine glue to seal, and this marine glue will cracking under harsh open-air conditions effect, cause moisture to enter interior insulator, and then destroy insulated tube.And in order to reach good in insulation, it adopts inside to need blanketing gas medium (SF6, N2), in order to prevent leaking of internal gas, also needs hollow combined insulator to have good sealing effectiveness.
Summary of the invention
Technical problem to be solved by this invention is the hermetically-sealed construction providing a kind of hollow combined insulator, there is the hermetically-sealed construction of top, sidewall, three grades, bottom, by the rainwater of outside, air exclusion in outside, and prevent inner filler from leaking to outside, the rectangular seal adopting rectangular seal and coordinate with rectangular seal, adopt contact area during rectangular configuration increase sealing, make sealing effectiveness better.
For solving above-mentioned existing technical problem, the present invention adopts following scheme: a kind of hermetically-sealed construction of hollow combined insulator, comprise flange, described flange inside is provided with insulated tube, described insulated tube outer cover is connected to umbrella cover, described umbrella cover is arranged on the top of flange, low slot sealing arrangement is provided with between the downside wall upper end of described flange and the foundation ring portion of insulated tube, sidewall hermetically-sealed construction is provided with between the side wall surface of described flange and the tube wall of insulated tube, described flange, inverted draw cut hermetically-sealed construction is provided with between insulated tube and umbrella cover three, described low slot sealing arrangement, sidewall hermetically-sealed construction, the inside of inverted draw cut hermetically-sealed construction is respectively equipped with rectangular seal, the bottom of described flange is provided with the sealing end, be rectangular configuration at the bottom of described sealing and closely cooperate with rectangular seal.
The contact area of rectangular loop and glass reinforced plastic pipe is greater than the contact area of O type circle and glass reinforced plastic pipe, and contact area is larger, and the sealing property of sealing ring is better, therefore the sealing property of rectangular loop is better than O type circle.
The sealing end, is rectangular configuration and closely cooperates with rectangular seal, increases contact area, provides the sealing effectiveness more had.Use dovetail groove to replace rectangular channel, make product when bearing moment of flexure, stress distribution is more even.Use rectangular seal to replace O RunddichtringO, effectively can avoid the sealing ring slip phenomenon in sealing ring assembling process, guarantee the qualification rate of production.Obtain better sealing property.
The grooved of the flange inner wall of conventional composite insulator is rectangular channel, and rectangular channel is when bearing load, and wedge angle position is stress concentration point, and conventional composite insulator uses O type circle as sealing ring.O type circle is in assembling process, and before being compressed by glass reinforced plastic pipe, easy slippage goes out seal groove, causes product rejection.The sealing contact surface area of O type circle is less than the sealing contact surface area of rectangular loop, and sealing contact surface is long-pending larger, and the performance of sealing ring is better.
In further feature, be provided with rectangular seal in described sidewall hermetically-sealed construction, side is flange madial wall, side is insulated tube lateral wall, described flange madial wall is provided with flange inner side slot, described flange inner side slot is rectangular flange inner side slot, described insulated tube lateral wall is provided with insulated tube outer side slot, described flange inner side slot is corresponding with insulated tube outer side slot and adopt rectangular configuration, the groove depth of described flange inner side slot is greater than the groove depth of insulated tube outer side slot, and the groove depth of described insulated tube outer side slot is corresponding with the height after the expansion of rectangular seal to be sealed.
In further feature, be provided with rectangular seal in described sidewall hermetically-sealed construction, side is flange madial wall, side is insulated tube lateral wall, described rectangular seal can adopt trapezium structure, and described flange inner side slot and insulated tube outer side slot can adopt trapezium structure.
In further feature, described inverted draw cut hermetically-sealed construction comprises the flange being positioned at downside, the insulated tube being sealed in left side and is located at the umbrella cover of upside, described flange inside top is provided with inverted draw cut, the medial surface of described inverted draw cut is corresponding with the lateral wall of insulated tube, upper side is corresponding with the side, ground of umbrella cover, the width of described umbrella cover is greater than the width of inverted draw cut, and described inverted draw cut is rectangular configuration and inside is provided with rectangular seal.
In further feature, described rectangular seal is Filled Rectangle sealing ring, and described rectangular seal can adopt the material that in Ethylene Propylene Terpolymer, acrylonitrile-butadiene rubber, fluorubber or fluorosioloxane rubber, arbitrary material and mixing thereof draw to make.
In further feature, described rectangular seal is hollow rectangle sealing ring, and the boring structure of described rectangular seal can select hollow cylinder, hollow square body, hollow cuboid.
In further feature, the compression ratio of described rectangular seal is 15% ~ 35%.
In further feature, the rectangular configuration of the interface dimensions of described rectangular seal in long and wide size between 3mm-6mm.
Beneficial effect:
Compared with prior art, the hermetically-sealed construction of the hollow combined insulator that the present invention adopts technique scheme to provide, at least there is the hermetically-sealed construction that following technique effect has top, sidewall, three grades, bottom, by the rainwater of outside, air exclusion in outside, and prevent inner filler from leaking to outside, the rectangular seal adopting rectangular seal and coordinate with rectangular seal, adopts contact area during rectangular configuration increase sealing, makes sealing effectiveness better.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the schematic diagram of low slot sealing arrangement in the present invention;
Fig. 3 is the schematic diagram of sidewall rectangular seal in the present invention;
Fig. 4 is the schematic diagram of the trapezoidal hermetically-sealed construction of sidewall in the present invention;
Fig. 5 is the schematic diagram of inverted draw cut hermetically-sealed construction in the present invention;
Fig. 6 is the schematic diagram of hollow core cylinder rectangular seal of the present invention;
Fig. 7 is the schematic diagram of hollow core square rectangular seal of the present invention;
Fig. 8 is the schematic diagram of hollow core cuboid rectangular seal of the present invention.
In figure, flange 1, sealing end 1f, flange inner side slot 1g, inverted draw cut 1h, insulated tube 2, insulated tube outer side slot 2c, umbrella cover 3, low slot sealing arrangement 4, sidewall hermetically-sealed construction 5, inverted draw cut hermetically-sealed construction 6, rectangular seal 7, hollow cylinder 7a, hollow square body 7b, hollow cuboid 7c.
Embodiment
As Fig. 1, shown in 2, a kind of hermetically-sealed construction of hollow combined insulator, comprise flange 1, flange 1 inside is provided with insulated tube 2, insulated tube 2 outer cover is connected to umbrella cover 3, umbrella cover 3 is arranged on the top of flange 1, it is characterized in that: between the downside wall upper end of flange 1 and the foundation ring portion of insulated tube 2, be provided with low slot sealing arrangement 4, sidewall hermetically-sealed construction 5 is provided with between the side wall surface of flange 1 and the tube wall of insulated tube 2, flange 1, inverted draw cut hermetically-sealed construction 6 is provided with between insulated tube 2 and umbrella cover 3 three, low slot sealing arrangement 4, sidewall hermetically-sealed construction 5, the inside of inverted draw cut hermetically-sealed construction 6 is respectively equipped with rectangular seal 7, the bottom of described flange 1 is provided with sealing end 1f, 1f at the bottom of described sealing is rectangular configuration and closely cooperates with rectangular seal 7.
Sealing end 1f is rectangular configuration and closely cooperates with rectangular seal 7, effectively can increase contact area, provide more effective sealing effectiveness under same compression ratio.
Rectangular seal 7 and insulated tube 2(insulated tube 2 can adopt glass reinforced plastic pipe) contact area be greater than the contact area of same specification O type circle and glass reinforced plastic pipe, contact area is larger, and the sealing property of sealing ring is better, therefore the sealing property of rectangular loop is better than O type circle.
Use rectangular seal to replace O RunddichtringO, effectively can avoid the sealing ring slip phenomenon in sealing ring assembling process, guarantee the qualification rate of production.Obtain better sealing property.
The grooved of the flange inner wall of conventional composite insulator is rectangular channel, and rectangular channel is when bearing load, and wedge angle position is stress concentration point, and conventional composite insulator uses O type circle as sealing ring.O type circle is in assembling process, and before being compressed by glass reinforced plastic pipe, easy slippage goes out seal groove, causes product rejection.The sealing contact surface area of O type circle is less than the sealing contact surface area of rectangular loop, and sealing contact surface is long-pending larger, and the performance of sealing ring is better.
Flange 1 inside is provided with insulated tube 2, flange 1 pair of insulated tube 2 supports, flange 1, insulated tube 2 and umbrella cover 3 three directly form an overall structure, be respectively equipped with hermetically-sealed construction, make whole hollow combined insulator reach the structure of integral sealing in the junction of three.By sealing between the downside wall upper end of low slot sealing arrangement 4 pairs of flanges 1 and the foundation ring portion of insulated tube 2.By sealing between the side wall surface of sidewall hermetically-sealed construction 5 pairs of flanges 1 and the tube wall of insulated tube 2.By inverted draw cut hermetically-sealed construction 6 pairs of flanges 1, seal between insulated tube 2 and umbrella cover 3 triplicity position, reach integral sealing and live hollow combined insulator.Thus ensure that the inner space of hollow combined insulator entirety and space outerpace seal.Rectangular seal 7 carries out the effect of enhanced leaktightness to the hermetically-sealed construction of inside, makes the sealing property of hollow combined insulator more stable.
Insulated tube 2 can be glass reinforced plastic pipe, is convenient to manufacture, and can reach insulation effect.
Work in-process, to processing turning outside glass reinforced plastic pipe inside glass reinforced plastic pipe, feed is at 2 ~ 7mm/min, Lathe quantity, between 0.05 ~ 0.5mm, after facing completes, smears glass reinforced plastic pipe end face with cured resin at room temperature, then use sand papering smooth, form smooth sealing surface.To ensure sealing property.
The rectangular configuration of the interface dimensions of rectangular seal 7 in long and wide size, is considered in processing and is convenient to manufacture between 3mm-6mm, and is convenient to install at hermetically-sealed construction, adopts this size.
Between rectangular seal 7 and low slot sealing arrangement 4, sidewall hermetically-sealed construction 5, inverted draw cut hermetically-sealed construction 6 in use, the cooperation in using needs by the rate control of rectangular seal 7 between 15% ~ 35%, to meet installation requirement.
The sectional area of each seal groove that low slot sealing arrangement 4, sidewall hermetically-sealed construction 5, inverted draw cut hermetically-sealed construction 6 are formed needs larger than the sectional area of rectangular seal 7 5% ~ 30%, can reply timely after rectangular seal 7 thermal expansion in satisfied use, ultimate deformation can not be produced, situation about cannot reply because of expansion.
Under much compression rate, the relative O type of the contact area between rectangular seal 7 with insulated tube 2 circle is larger, and contact area is larger, and the sealing property of rectangular seal 7 is better.
As shown in Figure 3, be provided with rectangular seal 7 in sidewall hermetically-sealed construction 5, side is flange 1 madial wall, side is insulated tube 2 lateral wall, flange 1 madial wall is provided with flange inner side slot 1g, flange inner side slot 1g is rectangular flange inner side slot, insulated tube 2 lateral wall is provided with insulated tube outer side slot 2c, flange inner side slot 1g is corresponding with insulated tube outer side slot 2c and adopt rectangular configuration, the groove depth of flange inner side slot 1g is greater than the groove depth of insulated tube outer side slot 2c, and the groove depth of insulated tube outer side slot 2c is corresponding with the height after the expansion of rectangular seal 7 to be sealed.
In the use procedure of hollow combined insulator, because temperature is too high, and rectangular seal 7 expanded by heating can be produced, in the process expanded, flange inner side slot 1g is corresponding with face, rectangular seal 7 side, and insulated tube outer side slot 2c is corresponding with rectangular seal 7 another side.
Pressure to flange inner side slot 1g and insulated tube outer side slot 2c during in order to reduce rectangular seal 7 expanded by heating, rectangular seal 7 differential expansion pressure is excessive, can surmount deformation limit, cannot reply after causing rectangular seal 7 to be out of shape.Flange inner side slot 1g is that rectangular flange inner side slot is corresponding with insulated tube outer side slot 2c and adopt rectangular configuration, and meet rectangular seal 7 after expanded by heating extruding, rectangular seal 7 outline can not be out of shape, and is always original shape.
Flange inner side slot 1g is corresponding with insulated tube outer side slot 2c and adopt rectangular configuration, meets and the coincideing of the installation and use of rectangular seal 7.
The groove depth of flange inner side slot 1g is greater than the groove depth of insulated tube outer side slot 2c, is convenient to rectangular seal 7 to be directly installed in flange inner side slot 1g, and then installing insulating pipe 2, installation is more prone to, can not damages rectangular seal 7.
The groove depth of insulated tube outer side slot 2c is corresponding with the height after the expansion of rectangular seal 7 to be sealed, make sealing effectiveness more stable, when meeting rectangular seal 7 coefficient of expansion, meet sealing effectiveness cannot to reply because of rectangular seal 7 after expansion again, and the size that is convenient and that extrude in installing in installation.When the thermal expansion dimension limit of rectangular seal 7, the stock size of rectangular seal 7, the installation dimension of rectangular seal 7 in flange inner side slot 1g, rectangular seal 7 are installed, COMPREHENSIVE CALCULATING is carried out, to meet the requirement of expanding in installation and use to the size entering insulated tube outer side slot 2c after the extruding of insulated tube lateral wall.
As shown in Figure 4, be provided with rectangular seal 7 in sidewall hermetically-sealed construction 5, side is flange 1 madial wall, side is insulated tube 2 lateral wall, rectangular seal 7 can adopt trapezium structure, and flange inner side slot 1g and insulated tube outer side slot 2c can adopt trapezium structure.
Rectangular seal 7 can adopt trapezium structure, because rectangular seal 7 in use expanded by heating, its wedge angle position is stress concentration point, in order to decompose the stress of centrostigma.Adopt trapezium structure by Stress decomposition to multiaspect, local stress can be reduced, can reply in time after making rectangular seal 7 expanded by heating, improve useful life.
As shown in Figure 5, inverted draw cut hermetically-sealed construction 6 comprises the flange 1 being positioned at downside, the insulated tube 2 being sealed in left side and the umbrella cover 3 being located at upside, flange 1 inside top is provided with inverted draw cut 1h, the medial surface of inverted draw cut 1h is corresponding with the lateral wall of insulated tube 2, upper side is corresponding with the side, ground of umbrella cover 3, the width of umbrella cover 3 is greater than the width of inverted draw cut 1h, and inverted draw cut 1h is rectangular configuration and inside is provided with rectangular seal 7.
Inverted draw cut 1h is arranged on the junction of flange 1, insulated tube 2, umbrella cover 3, is sealed by rectangular seal 7, strengthens the sealing effectiveness between three.
Inverted draw cut 1h is that rectangular configuration is convenient to engage with each face of flange 1, insulated tube 2, umbrella cover 3, so that rectangular seal 7 seals.
The width of umbrella cover 3 is greater than the width of inverted draw cut 1h, realizes the sealing to inverted draw cut 1h, rectangular seal 7 is arranged in the space of a sealing, strengthens sealing effectiveness further.
As shown in Fig. 6,7,8, rectangular seal 7 is Filled Rectangle sealing ring, and rectangular seal 7 can adopt the material that in Ethylene Propylene Terpolymer, acrylonitrile-butadiene rubber, fluorubber or fluorosioloxane rubber, arbitrary material and mixing thereof draw to make.
Rectangular seal 7 is Filled Rectangle sealing ring, is convenient to manufacture, and is easy to realize.
Comprehensively selected by the thermal coefficient of expansion of different materials, sealing property, ambient temperature, mix, more encapsulation scheme can be obtained.
Rectangular seal 7 is hollow rectangle sealing ring, and the boring structure of rectangular seal 7 can select hollow cylinder 7a, hollow square body 7b, hollow cuboid 7c.
Rectangular seal 7 is hollow rectangle sealing ring, decomposes during thermal expansion to rectangular seal 7 to sealing surfaces, internally decomposes the stress extruding and cause, can not cause thermal expansion ultimate deformation in using.
Because rectangular seal 7 is rectangular configuration, the boring structure of rectangular seal 7 can select hollow cylinder 7a, hollow square body 7b, hollow cuboid 7c, stress in thermal expansion ultimate deformation can be decomposed, determine according to the concrete condition in use.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit, those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ the term such as flange 1, sealing end 1f, flange inner side slot 1g, inverted draw cut 1h, insulated tube 2, insulated tube outer side slot 2c, umbrella cover 3, low slot sealing arrangement 4, sidewall hermetically-sealed construction 5, inverted draw cut hermetically-sealed construction 6, rectangular seal 7, hollow cylinder 7a, hollow square body 7b, hollow cuboid 7c herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (8)
1. the hermetically-sealed construction of a hollow combined insulator, comprise flange (1), described flange (1) inside is provided with insulated tube (2), described insulated tube (2) outer cover is connected to umbrella cover (3), described umbrella cover (3) is arranged on the top of flange (1), it is characterized in that: between the downside wall upper end of described flange (1) and the foundation ring portion of insulated tube (2), be provided with low slot sealing arrangement (4), sidewall hermetically-sealed construction (5) is provided with between the side wall surface of described flange (1) and the tube wall of insulated tube (2), described flange (1), inverted draw cut hermetically-sealed construction (6) is provided with between insulated tube (2) and umbrella cover (3) three, described low slot sealing arrangement (4), sidewall hermetically-sealed construction (5), the inside of inverted draw cut hermetically-sealed construction (6) is respectively equipped with rectangular seal (7), the bottom of described flange (1) is provided with the sealing end (1f), (1f) at the bottom of described sealing is for rectangular configuration and closely cooperate with rectangular seal (7).
2. the hermetically-sealed construction of hollow combined insulator according to claim 1, it is characterized in that: in described sidewall hermetically-sealed construction (5), be provided with rectangular seal (7), side is flange (1) madial wall, side is insulated tube (2) lateral wall, described flange (1) madial wall is provided with flange inner side slot (1g), described flange inner side slot (1g) is rectangular flange inner side slot, described insulated tube (2) lateral wall is provided with insulated tube outer side slot (2c), described flange inner side slot (1g) is corresponding with insulated tube outer side slot (2c) and adopt rectangular configuration, the groove depth of described flange inner side slot (1g) is greater than the groove depth of insulated tube outer side slot (2c), the groove depth of described insulated tube outer side slot (2c) is corresponding with the height after the expansion of rectangular seal (7) to be sealed.
3. the hermetically-sealed construction of hollow combined insulator according to claim 6, it is characterized in that: be provided with rectangular seal (7) in described sidewall hermetically-sealed construction (5), side is flange (1) madial wall, side is insulated tube (2) lateral wall, described rectangular seal (7) can adopt trapezium structure, and described flange inner side slot (1g) and insulated tube outer side slot (2c) can adopt trapezium structure.
4. the hermetically-sealed construction of hollow combined insulator according to claim 1, it is characterized in that: described inverted draw cut hermetically-sealed construction (6) comprises the flange (1) being positioned at downside, be sealed in the insulated tube (2) in left side and the umbrella cover (3) being located at upside, described flange (1) inside top is provided with inverted draw cut (1h), the medial surface of described inverted draw cut (1h) is corresponding with the lateral wall of insulated tube (2), upper side is corresponding with the side, ground of umbrella cover (3), the width of described umbrella cover (3) is greater than the width of inverted draw cut (1h), described inverted draw cut (1h) is for rectangular configuration and inside is provided with rectangular seal (7).
5. the hermetically-sealed construction of hollow combined insulator according to claim 1, it is characterized in that: described rectangular seal (7) is Filled Rectangle sealing ring, described rectangular seal (7) can adopt the material that in Ethylene Propylene Terpolymer, acrylonitrile-butadiene rubber, fluorubber or fluorosioloxane rubber, arbitrary material and mixing thereof draw to make.
6. the hermetically-sealed construction of hollow combined insulator according to claim 1, it is characterized in that: described rectangular seal (7) is hollow rectangle sealing ring, the boring structure of described rectangular seal (7) can select hollow cylinder (7a), hollow square body (7b), hollow cuboid (7c).
7. hollow combined insulator hermetically-sealed construction according to claim 1, is characterized in that: the compression ratio of described rectangular seal (7) is 15% ~ 35%.
8. hollow combined insulator hermetically-sealed construction according to claim 1, is characterized in that: the rectangular configuration of the interface dimensions of described rectangular seal (7) in long and wide size between 3mm-6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410175057.5A CN105023660A (en) | 2014-04-29 | 2014-04-29 | Seal structure of hollow composite insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410175057.5A CN105023660A (en) | 2014-04-29 | 2014-04-29 | Seal structure of hollow composite insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105023660A true CN105023660A (en) | 2015-11-04 |
Family
ID=54413557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410175057.5A Pending CN105023660A (en) | 2014-04-29 | 2014-04-29 | Seal structure of hollow composite insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105023660A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448437A (en) * | 2015-12-23 | 2016-03-30 | 深圳市银星绝缘子电气化铁路器材有限公司 | Pollution-resistant rod-shaped epoxy glass fiber core porcelain insulator for electrified railway catenaries |
| CN105673719A (en) * | 2016-03-16 | 2016-06-15 | 杭州正强万向节有限公司 | High-sealing oil-lubricated universal joint assembly |
| CN109524261A (en) * | 2019-01-10 | 2019-03-26 | 中国电子科技集团公司第三研究所 | A kind of underwater trigger-type key |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5227587A (en) * | 1991-05-13 | 1993-07-13 | Emerson Electric Co. | Hermetic assembly arrangement for a current conducting pin passing through a housing wall |
| CN201149082Y (en) * | 2007-12-20 | 2008-11-12 | 南京智达电气有限公司 | Flange type transformer pure porcelain casing tube and seal structure of flange and porcelain bushing |
| CN202549510U (en) * | 2012-05-09 | 2012-11-21 | 中国西电电气股份有限公司 | New type hollow composite insulator adhesive-binding shaping structure |
| CN203858943U (en) * | 2014-04-29 | 2014-10-01 | 浙江九天科技有限公司 | Sealing structure for hollow composite insulator |
-
2014
- 2014-04-29 CN CN201410175057.5A patent/CN105023660A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5227587A (en) * | 1991-05-13 | 1993-07-13 | Emerson Electric Co. | Hermetic assembly arrangement for a current conducting pin passing through a housing wall |
| CN201149082Y (en) * | 2007-12-20 | 2008-11-12 | 南京智达电气有限公司 | Flange type transformer pure porcelain casing tube and seal structure of flange and porcelain bushing |
| CN202549510U (en) * | 2012-05-09 | 2012-11-21 | 中国西电电气股份有限公司 | New type hollow composite insulator adhesive-binding shaping structure |
| CN203858943U (en) * | 2014-04-29 | 2014-10-01 | 浙江九天科技有限公司 | Sealing structure for hollow composite insulator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448437A (en) * | 2015-12-23 | 2016-03-30 | 深圳市银星绝缘子电气化铁路器材有限公司 | Pollution-resistant rod-shaped epoxy glass fiber core porcelain insulator for electrified railway catenaries |
| CN105673719A (en) * | 2016-03-16 | 2016-06-15 | 杭州正强万向节有限公司 | High-sealing oil-lubricated universal joint assembly |
| CN109524261A (en) * | 2019-01-10 | 2019-03-26 | 中国电子科技集团公司第三研究所 | A kind of underwater trigger-type key |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105023660A (en) | Seal structure of hollow composite insulator | |
| CN203858943U (en) | Sealing structure for hollow composite insulator | |
| CN103117422B (en) | Sodium-sulfur cell module heat preservation box | |
| CN203218575U (en) | A sealed radio frequency coaxial connector | |
| CN204419192U (en) | For native sand sealing device and the shield machine of shield machine | |
| CN203607809U (en) | Cold shrink tube | |
| CN104976436A (en) | Device for sealing and blocking wire through hole on wall or cabinet body | |
| CN204002412U (en) | A kind of airtight withstand voltage observation port under water | |
| CN103854916A (en) | Combined direct-acting sealing device for breaker | |
| CN201554850U (en) | Sealing structure | |
| CN201368196Y (en) | Sealing device with air tightness | |
| CN203656410U (en) | Insulation joint applicable to oil-gas transmission pipeline | |
| CN203604824U (en) | Novel cable sealing gasket | |
| CN203815149U (en) | Sealing structure for double-layer vehicle-mounted cup without slot positions | |
| CN205230639U (en) | Withstand voltage waterproof cable | |
| CN204401861U (en) | A kind of novel sound insulating building block | |
| CN203811023U (en) | Water storage basin for cooling tower | |
| CN206364455U (en) | A kind of cable protection pipe mouth of pipe big envelope | |
| CN203960709U (en) | Concrete road dilatation joint filling device | |
| CN203809679U (en) | Sealing structure and bus device using same | |
| CN204299619U (en) | Pultruded steel core glass fiber reinforced plastic platform plate | |
| CN203941720U (en) | A kind of insulating barrier that is provided with through hole | |
| CN205406387U (en) | Solid sealed pole | |
| CN204517325U (en) | A kind of gas-insulated transmission line | |
| CN203721620U (en) | Combined translation sealing device for breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151104 |