CN111934258A - Underground substation electromagnetic insulation outer wall and tunnel connecting device - Google Patents
Underground substation electromagnetic insulation outer wall and tunnel connecting device Download PDFInfo
- Publication number
- CN111934258A CN111934258A CN202010774145.2A CN202010774145A CN111934258A CN 111934258 A CN111934258 A CN 111934258A CN 202010774145 A CN202010774145 A CN 202010774145A CN 111934258 A CN111934258 A CN 111934258A
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- Prior art keywords
- sleeve
- waterproof
- wall
- tunnel
- connection device
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
- H02B1/202—Cable lay-outs
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B7/00—Enclosed substations, e.g. compact substations
- H02B7/06—Distribution substations, e.g. for urban network
- H02B7/08—Underground substations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/013—Sealing means for cable inlets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0406—Details thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
- H02G3/0487—Tubings, i.e. having a closed section with a non-circular cross-section
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/08—Installations of electric cables or lines in or on the ground or water in tunnels
Abstract
The invention discloses a connecting device of an electromagnetic insulation outer wall and a tunnel of an underground substation, which comprises a partition plate combined sleeve and an embedded waterproof sleeve, wherein the partition plate combined sleeve is used for connecting a substation side and a cable tunnel side; the partition plate combined sleeve is a plane formed by a plurality of square partition plates made of a first material, the square partition plates are not in contact with each other, and are connected by adopting a connecting piece made of a second material and used for weakening electromagnetic induction heating generated by the alternating current unidirectional cable; a plurality of pipe holes are formed among the square partition plates and used for allowing cables to pass through; the embedded waterproof sleeve comprises all cables passing through the clapboard combination sleeve. According to one embodiment of the invention, the magnetic flux environment of the steel plate is changed by adopting a common steel plate combined sleeve with lower manufacturing cost, the electromagnetic induction heating generated by the alternating current unidirectional cable is weakened by adopting a method of welding the steel plate by using brass, the investment is greatly reduced compared with a non-magnetic stainless steel embedded part, and the pipe hole strength and the impermeability can be improved compared with a plastic embedded pipe.
Description
Technical Field
The invention relates to the technical field of waterproof of power equipment, in particular to a connecting device of an electromagnetic insulation outer wall and a tunnel of an underground substation.
Background
Due to the characteristics of the underground cable layer of the transformer substation, the surrounding environment, the waterproof technology, the material performance and other factors, certain hidden danger of water leakage exists in the engineering. If the hidden dangers are not properly treated, the safe operation of the transformer substation is affected, and even a power grid accident may occur. Therefore, the method is significant for preventing and treating the water leakage of the underground cable layer of the transformer substation and must be carefully treated. Along with the rapid development of electric power construction in recent years and the progress of the building industry, people also put higher requirements on seepage prevention and leakage prevention of buildings. In the design and implementation process of the waterproof treatment scheme, environmental factors, construction technical factors, waterproof material characteristics and other factors need to be comprehensively considered, and the mutual influence relationship among the environmental factors, the construction technical factors, the waterproof material characteristics and the like is analyzed, so that the underground cable layer of the transformer substation is effectively subjected to waterproof treatment.
At present, the buried depth of the outer wall of each voltage class underground substation is generally-6 to-35 m, the outer wall bears larger water and soil pressure, and engineering experience shows that the voltage class of the common underground substation is 110kV to 220kV at present, and the maximum underground water and soil pressure to be borne by the outer wall is about 35T/m 2. The underground station is mainly waterproof by the outer part and the structure.
But the underground substation has the problem of cable through-wall due to process factors. The cable through-wall position is generally the deepest part of the underground outer wall. The external waterproof is complex to manufacture, the concrete pouring cold joint at the cable wall-through position has natural water seepage prevention and control difficulties, and the project with problems at the position is not few. The common alternating-current single-phase cable wall penetrating position is complex in process and difficult to construct.
With the development of science and technology and the accumulation of the design experience of the cable interface of the underground station by the inventor, besides the self waterproof materials such as the impervious concrete outer wall and the like, the reasonable node design plays an important role in the waterproof effect of the cable tunnel interface.
Disclosure of Invention
The invention aims to provide a connecting device for an electromagnetic insulation outer wall and a tunnel of an underground transformer substation, which weakens electromagnetic induction heating generated by an alternating current unidirectional cable, improves the waterproof effect of an underground cable layer of the transformer substation, and prolongs the service life of the cable tunnel.
One embodiment of the present invention provides a device for connecting an electromagnetic insulation outer wall and a tunnel of an underground substation, including: the clapboard combination sleeve and the embedded waterproof sleeve are used for connecting the transformer substation side and the cable tunnel side;
the partition plate combined sleeve is formed by a plurality of square partition plates made of a first material into a plane;
the square partition plates are not in contact with each other and are connected by adopting a connecting piece made of a second material, so that electromagnetic induction heating generated by the alternating-current unidirectional cable is weakened;
a plurality of pipe holes are formed among the square partition plates and used for allowing cables to pass through;
the embedded waterproof sleeve comprises all cables passing through the clapboard combination sleeve.
Preferably, a flexible waterproof sleeve is further included in the pipe orifice.
Preferably, the first material is steel.
Preferably, the second material is brass.
Preferably, the spacing between a plurality of the square partition plates is not less than 10 mm.
Preferably, the embedded waterproof sleeve comprises a concrete protective layer, a mortar isolation layer, a foam plastic rod, a waterproof layer, an externally-attached water stop, sealing ointment, a polyphenyl plate strip, a middle-mounted water stop, a polyphenyl plate strip and sealing ointment.
Preferably, the seam width of the central water stop is 100-250 mm.
Preferably, the waterproof layer adopts an inner-inserting type outer waterproof structure, and the inner-inserting type outer waterproof structure comprises a transformer substation side waterproof layer, a cable tunnel side waterproof layer and an additional waterproof layer.
Preferably, the length of the inner-inserting type outer waterproof structure is not less than 500 mm.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
the invention discloses a connecting device of an electromagnetic insulation outer wall and a tunnel of an underground substation, which comprises a partition plate combined sleeve and an embedded waterproof sleeve, wherein the partition plate combined sleeve is used for connecting a substation side and a cable tunnel side; the partition plate combined sleeve is a plane formed by a plurality of square partition plates made of a first material, the square partition plates are not in contact with each other, and are connected by adopting a connecting piece made of a second material and used for weakening electromagnetic induction heating generated by the alternating current unidirectional cable; a plurality of pipe holes are formed among the square partition plates and used for allowing cables to pass through; the embedded waterproof sleeve comprises all cables passing through the clapboard combination sleeve. The invention can weaken electromagnetic induction heating generated by the alternating current unidirectional cable, improve the waterproof effect of the underground cable layer of the transformer substation and prolong the service life of the cable tunnel. According to one embodiment of the invention, the magnetic flux environment of the steel plate is changed by adopting a common steel plate combined sleeve with lower manufacturing cost, the electromagnetic induction heating generated by the alternating current unidirectional cable is weakened by adopting a method of welding the steel plate by using brass, the investment is greatly reduced compared with a non-magnetic stainless steel embedded part, and the pipe hole strength and the impermeability can be improved compared with a plastic embedded pipe.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a connection device for an electromagnetic insulation outer wall and a tunnel of an underground substation according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a partition plate combination sleeve in an electromagnetic insulation outer wall and tunnel connection device of an underground substation according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an embedded waterproof bushing in a connecting device between an electromagnetic insulation outer wall of an underground substation and a tunnel according to an embodiment of the present invention;
fig. 4 is a schematic structural view of an embedded waterproof bushing in a connecting device between an electromagnetic insulation outer wall of an underground substation and a tunnel according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be understood that the step numbers used herein are for convenience of description only and are not intended as limitations on the order in which the steps are performed.
It is to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The terms "comprises" and "comprising" indicate the presence of the described features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The term "and/or" refers to and includes any and all possible combinations of one or more of the associated listed items.
The underground part of the underground substation is synchronously built with the main body, but the cable tunnel is a full underground structure, and the underground part and the main body are incompatible in aspects such as building load, construction procedures and the like. Due to different ground treatment schemes, the underground substation and the tunnel have post-construction uneven settlement. As the underground outer wall tunnel interface connected with the underground outer wall tunnel interface, the problem of coordination of vertical displacement caused by uneven settlement needs to be solved, otherwise, the underground water-proof failure can be caused by the cracking of building materials caused by displacement.
When the cable of the underground substation passes through the reinforced concrete outer wall, the problems that the manufacturing cost of the non-magnetic stainless steel plate is high and the anti-permeability of the PVC pipe is poor are easily caused at the pipe penetrating position.
Please refer to fig. 1-3.
One embodiment of the present invention provides a device for connecting an electromagnetic insulation outer wall and a tunnel of an underground substation, including: the partition plate combination sleeve 1 and the embedded waterproof sleeve 2 are used for connecting the transformer substation side a and the cable tunnel side b;
the clapboard combination sleeve 1 is formed by a plurality of square clapboards 101 made of a first material into a plane;
the square partition plates 101 are not in contact with each other and are connected by adopting a connecting piece 103 made of a second material, so that electromagnetic induction heating generated by the alternating current unidirectional cable is weakened;
a plurality of pipe holes 102 are formed among the square partition plates 101 and used for allowing cables to pass through; the substation-side cable tunnel interface 2a and the cable tunnel 2b are connected to each other.
The embedded waterproof sleeve 2 comprises all cables passing through the clapboard combination sleeve 1.
In one embodiment, to improve the waterproofing effect of the device, a flexible waterproofing sleeve is mounted in the pipe hole. The common sleeve is difficult to seal, so that water leakage exists between the sleeve and a pipeline, and water leakage also easily occurs between the sleeve and a wall. Only with waterproof sleeve pipe, can solve the leaking between sleeve pipe and the wall, but can not solve the sealed between sleeve pipe and the pipeline. Therefore, the flexible waterproof sleeve can exactly solve the two problems of the common sleeve and the waterproof sleeve.
Preferably, the flexible waterproof sleeve comprises a rubber water stop or a metal plate water stop, and has certain anti-settling deformation capacity. It needs to be noted that the rubber waterstop must adopt reliable fixing measures when binding reinforcing steel bars and supporting a formwork; in order to prevent displacement during concrete pouring and ensure the correct position of the water stop in the concrete, holes can be punched only on the allowed part of the water stop, and the effective waterproof part of the water stop cannot be damaged when the water stop is fixed. The fixing method of the rubber waterstop comprises the following steps: fixing by using additional steel bars; fixing a special fixture; fixing the template by lead wires and the like. No matter what fixing method is adopted, the fixing method of the water stop belt is carried out according to the construction specification of the design requirement, the water stop belt is required to be accurately positioned, the effective waterproof part of the water stop belt is not damaged, and concrete pouring and tamping are convenient.
Preferably, the strength of the second material is not less than the tensile and compressive strength of the first material.
Preferably, the first material is steel and the second material is brass.
Preferably, in order to meet the stress condition of building specifications and achieve good electromagnetic induction weakening effect, the distance between the square partition plates is not less than 10 mm.
In one embodiment, a single steel plate is perforated to form a tube hole for installing a flexible waterproof sleeve to pass through the cable. The pipe holes are arranged in an array, cutting is carried out along the pipe hole array in the transverse direction or the longitudinal direction, the steel plates are separated, then the cutting positions are welded by brass, wherein the welding width of the brass is not less than 10mm, and finally the clapboard combination sleeve 1 is obtained. The baffle plate combined sleeve 1 in the embodiment can reduce electromagnetic induction heating generated by the alternating current unidirectional cable.
Preferably, the in-line waterproof sleeve comprises a concrete protective layer 201, a mortar isolation layer 202, a foam plastic rod 203, a waterproof layer 204, an external-attached water stop, sealing paste, a polyphenyl batten, a central-positioned water stop, a polyphenyl batten and sealing paste.
Preferably, the width of the seam at the water stop (the joint of the outward protruding section of the transformer substation and the electric connection tunnel) is 100-250 mm.
Preferably, the waterproof layer adopts an internal-insertion external waterproof structure, and the internal-insertion external waterproof structure comprises a substation-side waterproof layer 224, a cable tunnel-side waterproof layer 234 and an additional waterproof layer 214. The three waterproof layers are overlapped to realize the transition lap joint of the two waterproof layers outside the structure, and the requirement of the underground transformer substation for impermeability of the underground water pressure within 16m depth can be met.
Preferably, the length of the internal-insertion external waterproof structure is not less than 500mm in order to meet the condition of 16m water pressure impermeability of a conventional underground substation.
Preferably, the steel bar binding constructed outside the concrete protective layer is insulated by adopting nylon laying cloth.
Please refer to fig. 3-4.
In one embodiment, fig. 3 is a structural view of a fixing device obtained after an underground substation is connected with a cable tunnel, and fig. 4 is a structural view of a device before the underground substation is connected with the cable tunnel. The connection of the underground substation and the cable tunnel is protected by a brick wall 302 in the earlier stage, the temporary brick wall 302 is used for plugging the hole, and then the temporary brick wall 302 is removed when the cable tunnel is in butt joint. At the same time, a temporary polystyrene board protection layer 301 is also arranged, and is also removed when the cable tunnel is butted.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides an underground substation electromagnetic insulation outer wall and tunnel connection device which characterized in that includes:
the clapboard combination sleeve and the embedded waterproof sleeve are used for connecting the transformer substation side and the cable tunnel side;
the partition plate combined sleeve is formed by a plurality of square partition plates made of a first material into a plane;
the square partition plates are not in contact with each other and are connected by adopting a connecting piece made of a second material, so that electromagnetic induction heating generated by the alternating-current unidirectional cable is weakened;
a plurality of pipe holes are formed among the square partition plates and used for allowing cables to pass through;
the embedded waterproof sleeve comprises all cables passing through the clapboard combination sleeve.
2. The underground substation electromagnetic insulation exterior wall and tunnel connection device of claim 1, further comprising a flexible waterproof sleeve within the bore.
3. The underground substation electromagnetic insulation exterior wall and tunnel connection device of claim 1, wherein the first material is steel.
4. The underground substation electromagnetic insulation exterior wall and tunnel connection device of claim 1, wherein the second material is brass.
5. The underground substation electromagnetic insulation outer wall and tunnel connection device of claim 1, wherein the spacing between the plurality of square partition plates is not less than 10 mm.
6. The underground substation electromagnetic insulation exterior wall and tunnel connection device of claim 1, wherein the embedded waterproof sleeve comprises a concrete protective layer, a mortar isolation layer, a foam plastic rod, a waterproof layer, an externally attached water stop, a sealing paste, a polyphenyl slat, a mid-positioned water stop, a polyphenyl slat, and a sealing paste.
7. The underground substation electromagnetic insulation outer wall and tunnel connection device according to claim 6, wherein the seam width at the central water stop is 100-250 mm.
8. The underground substation electromagnetic insulation outer wall and tunnel connection device of claim 6, wherein the waterproof layer adopts an inner-insertion outer waterproof structure, and the inner-insertion outer waterproof structure comprises a substation-side waterproof layer, a cable tunnel-side waterproof layer and an additional waterproof layer.
9. The underground substation electromagnetic insulation exterior wall and tunnel connection device of claim 8, wherein the length of the internal-insertion external waterproof structure is not less than 500 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010774145.2A CN111934258A (en) | 2020-08-04 | 2020-08-04 | Underground substation electromagnetic insulation outer wall and tunnel connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010774145.2A CN111934258A (en) | 2020-08-04 | 2020-08-04 | Underground substation electromagnetic insulation outer wall and tunnel connecting device |
Publications (1)
| Publication Number | Publication Date |
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| CN111934258A true CN111934258A (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202010774145.2A Pending CN111934258A (en) | 2020-08-04 | 2020-08-04 | Underground substation electromagnetic insulation outer wall and tunnel connecting device |
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| Country | Link |
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| CN (1) | CN111934258A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114069537A (en) * | 2021-11-30 | 2022-02-18 | 河南省水利勘测设计研究有限公司 | Construction method of waterlogging-preventing backward-flowing structure of medium and small-section cable trench |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11144981A (en) * | 1997-11-07 | 1999-05-28 | Hitachi Ltd | Magnetic shielding device for stationary induction electrical apparatus |
| CN202940537U (en) * | 2012-11-28 | 2013-05-15 | 南京紫泉电力设计咨询有限公司 | Fixing device for connecting component between transformer and power distribution line |
| CN204304348U (en) * | 2014-11-26 | 2015-04-29 | 丹东电力勘察设计院 | A kind of wall bushing of substation is every magnetic dividing plate |
| CN206616711U (en) * | 2017-01-25 | 2017-11-07 | 广州地铁设计研究院有限公司 | A kind of waterproof construction at subway station main body and accessory interface |
| CN206697887U (en) * | 2017-05-04 | 2017-12-01 | 中国能源建设集团江苏省电力设计院有限公司 | A kind of wall bushing connecting node |
| CN207349594U (en) * | 2017-09-01 | 2018-05-11 | 长沙广义变流技术有限公司 | A kind of penetrating cable through wall sealing device |
| CN209448381U (en) * | 2019-03-09 | 2019-09-27 | 上海樊贸机电工程装备有限公司 | Cable penetration seal assembly |
| CN110725340A (en) * | 2019-10-21 | 2020-01-24 | 惠州市第一建筑工程有限公司 | Post-cast strip advanced water stop structure and construction method thereof |
-
2020
- 2020-08-04 CN CN202010774145.2A patent/CN111934258A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11144981A (en) * | 1997-11-07 | 1999-05-28 | Hitachi Ltd | Magnetic shielding device for stationary induction electrical apparatus |
| CN202940537U (en) * | 2012-11-28 | 2013-05-15 | 南京紫泉电力设计咨询有限公司 | Fixing device for connecting component between transformer and power distribution line |
| CN204304348U (en) * | 2014-11-26 | 2015-04-29 | 丹东电力勘察设计院 | A kind of wall bushing of substation is every magnetic dividing plate |
| CN206616711U (en) * | 2017-01-25 | 2017-11-07 | 广州地铁设计研究院有限公司 | A kind of waterproof construction at subway station main body and accessory interface |
| CN206697887U (en) * | 2017-05-04 | 2017-12-01 | 中国能源建设集团江苏省电力设计院有限公司 | A kind of wall bushing connecting node |
| CN207349594U (en) * | 2017-09-01 | 2018-05-11 | 长沙广义变流技术有限公司 | A kind of penetrating cable through wall sealing device |
| CN209448381U (en) * | 2019-03-09 | 2019-09-27 | 上海樊贸机电工程装备有限公司 | Cable penetration seal assembly |
| CN110725340A (en) * | 2019-10-21 | 2020-01-24 | 惠州市第一建筑工程有限公司 | Post-cast strip advanced water stop structure and construction method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114069537A (en) * | 2021-11-30 | 2022-02-18 | 河南省水利勘测设计研究有限公司 | Construction method of waterlogging-preventing backward-flowing structure of medium and small-section cable trench |
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Effective date of registration: 20220125 Address after: 510000 No.1 Tianfeng Road, Guangzhou Science City, Huangpu District, Guangzhou City, Guangdong Province Applicant after: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE Co.,Ltd. Applicant after: GUANGDONG TIANAN PROJECT MANAGEMENT CO.,LTD. Address before: 510000 No.1 Tianfeng Road, Guangzhou Science City, Huangpu District, Guangzhou City, Guangdong Province Applicant before: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE Co.,Ltd. |
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Application publication date: 20201113 |