CN112072602A - High tension cable protection pipe plugging device - Google Patents
High tension cable protection pipe plugging device Download PDFInfo
- Publication number
- CN112072602A CN112072602A CN202011077993.4A CN202011077993A CN112072602A CN 112072602 A CN112072602 A CN 112072602A CN 202011077993 A CN202011077993 A CN 202011077993A CN 112072602 A CN112072602 A CN 112072602A
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- sealing
- sleeve
- end cover
- cable
- capsule
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- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 99
- 239000002775 capsule Substances 0.000 claims description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000000741 silica gel Substances 0.000 claims description 9
- 229910002027 silica gel Inorganic materials 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims 3
- 230000000149 penetrating effect Effects 0.000 claims 2
- 238000013461 design Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H02G15/007—Devices for relieving mechanical stress
-
- 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
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
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- Cable Accessories (AREA)
Abstract
The application belongs to the technical field of electric power, and relates to a high-voltage cable protection pipe plugging device which is used at a leading-out end of a high-voltage cable, wherein the leading-out end comprises a sleeve and a cable body, the cable body is arranged in the sleeve, a protection sealing cap is arranged at the end part of the sleeve, and a shell is arranged outside the protection sealing cap; the end cover is provided with an upper sealing threaded sleeve and a lower sealing threaded sleeve, a heat-shrinkable tube is arranged between the cable body and the upper sealing threaded sleeve, one end of the heat-shrinkable tube is sleeved with the cable body, and the other end of the heat-shrinkable tube is arranged on the outer side surface of the upper sealing threaded sleeve. The application has the following main beneficial effects: compact structure, reasonable design, simple operation, low cost, longer service life of the cable, strong applicability, convenient carrying, long service life and good sealing performance.
Description
Technical Field
The application belongs to the technical field of electric power, especially, relate to a high tension cable protection pipe plugging device.
Background
The high-voltage cable on the ground is led out of the cable trench from the transformer substation, a gap between the sleeve and the cable needs to be plugged, fireproof or waterproof mud is mainly adopted, although the plugging position can be protected in a short period, the plugging is only carried out by using the fireproof or waterproof mud, the problems of infirm plugging, unfastening and the like can be caused, gaps or cracks are easily caused due to the fact that the fireproof or waterproof mud is influenced by external conditions along with the time, and certain potential safety hazards exist. Particularly in winter, rainwater can infiltrate into the sleeve to freeze, and finally cable faults in the sleeve can be caused, so that the development of the cable protection sealing cap convenient to install and maintain becomes a problem which needs to be solved urgently.
Disclosure of Invention
In order to solve the above problems, the present invention discloses a plugging device for a high voltage cable protection tube, which is implemented by the following technical solutions.
The utility model provides a high tension cable protection pipe plugging device sets up the leading-out terminal at high tension cable, the leading-out terminal include sleeve pipe and cable body, cable body suit in the sleeve pipe, sleeve pipe tip set up the protection sealing cap, protection sealing cap overcoat be equipped with casing, its characterized in that: the protective sealing cap comprises an end cover and an expansion sealing structure, the end cover is of an annular structure and is sleeved at the end part of the sleeve, the expansion sealing structure comprises a sealing sheet, an expansion ring sheet and an expansion ring which are sequentially arranged, the section of the expansion ring sheet is of an n-shaped groove structure, the inner side surface and the outer side surface of the expansion ring sheet are respectively provided with expansion teeth in a separating way, the expansion ring is arranged in the groove structure of the expansion ring sheet, the end cover and the expansion ring sheet are correspondingly provided with through holes, connecting screw rods are arranged in the through holes, and the connecting screw rods sequentially penetrate through the expansion ring sheet, the sealing sheet and the end cover and are fixed by means of fastening nuts; the shell is of an upper and lower split structure and comprises an upper sealing shell and a lower sealing shell, an upper sealing threaded sleeve wrapped on the cable body and a lower sealing threaded sleeve wrapped on the outer side wall of the sleeve are arranged on the end cover, external threads are arranged on the upper sealing threaded sleeve and the lower sealing threaded sleeve, the upper sealing threaded sleeve and the lower sealing threaded sleeve are in threaded connection with the end cover through the upper sealing threaded sleeve, the lower sealing shell is in threaded connection with the end cover through the lower sealing threaded sleeve, a heat shrink tube wraps the cable body and the upper sealing threaded sleeve, one end of the heat shrink tube is sleeved with the cable body, and the other end of the heat shrink tube is sleeved on the outer side surface of the upper sealing threaded sleeve.
Above-mentioned a high tension cable protection pipe plugging device, its characterized in that: the lower edge of the upper capsule is arranged on the lower capsule thread insert, and a capsule ring is arranged between the lower edge of the upper capsule and the upper edge of the lower capsule.
Above-mentioned a high tension cable protection pipe plugging device, its characterized in that: go up the last edge of enclosure and be provided with the first trapezoidal sealing washer that the cross-section is trapezoidal between the cable body, first trapezoidal sealing washer suit on the cable body, the last edge of last enclosure set up to horn mouth column structure.
Above-mentioned a high tension cable protection pipe plugging device, its characterized in that: the lower capsule be provided with the cross-section between lower edge and the sleeve pipe and be trapezoidal second trapezoidal sealing washer, second trapezoidal sealing washer suit on the sleeve pipe, lower capsule lower edge set up to horn mouth column structure.
Above-mentioned a high tension cable protection pipe plugging device, its characterized in that: a buffer cushion is arranged between the end cover and the sleeve.
Above-mentioned a high tension cable protection pipe plugging device, its characterized in that: and silica gel is coated on the sealing piece.
Above-mentioned a high tension cable protection pipe plugging device, its characterized in that: the end part of the sleeve is provided with a waterproof elbow with a semicircular arc structure.
The application has the following main beneficial effects: compact structure, reasonable in design, easy and simple to handle, low cost, reduced personnel's intensity of labour, improved the life of cable, the suitability is strong, carry simple to operate, long service life, leakproofness are good.
Drawings
Fig. 1 is a schematic structural diagram of the present application in use.
Fig. 2 is a schematic cross-sectional view of the present application after being exploded in use.
Fig. 3 is a schematic perspective view of an expansion ring sheet.
Fig. 4 is an enlarged partial schematic view of fig. 3.
Figure 5 is a schematic view of one side of the present application in use.
Fig. 6 is an enlarged plan view of fig. 5.
Fig. 7 is an enlarged view of the cross-sectional view of fig. 6 at a-a.
In order that those skilled in the art will more accurately and clearly understand and practice the present application, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which: the cable comprises a sleeve 1, a cable body 2, an end cover 3, a sealing piece 4, an expansion ring 5, an expansion ring 6, an expansion ring 7, an expansion tooth 8, a connecting screw rod 9, a fastening nut 10, an upper sealing shell 11, a lower sealing shell 12, an upper sealing thread sleeve 13, a lower sealing thread sleeve 14, a sealing shell ring 15, a first trapezoid sealing ring 16, a second trapezoid sealing ring 17, a cushion pad 18 and a waterproof elbow.
Detailed Description
Examples 1
Referring to fig. 1 to 7, the invention relates to a plugging device for a high-voltage cable protection tube, which is arranged at a leading-out end of a high-voltage cable, the leading-out end comprises a sleeve 1 and a cable body 2, the cable body 2 is sleeved in the sleeve 1, a protective sealing cap is arranged at the end part of the sleeve 1, a shell is sleeved outside the protective sealing cap, the protective sealing cap comprises an end cover 3 and an expansion sealing structure, the end cover 3 is sleeved at the end part of the sleeve 1 in an annular structure, the expansion sealing structure comprises a sealing sheet 4, an expansion ring sheet 5 and an expansion ring 6 which are sequentially arranged, the section of the expansion ring sheet 5 is in an n-shaped groove structure, expansion teeth 7 are respectively arranged at the inner side and the outer side of the expansion ring sheet 5 in a separated manner, the expansion ring 6 is arranged in the groove structure of the expansion ring sheet 5, and through holes are correspondingly arranged on the end cover 3 and the, and a connecting screw rod 8 is arranged in the through hole, and the connecting screw rod 8 penetrates through the expansion ring piece 5, the sealing piece 4 and the end cover 3 in sequence and then is fixed by a fastening nut 9. The principle of the invention is that an annular expansion ring 6 is used for extruding an expansion ring sheet 5, as shown in figure 3, an expansion tooth 7 of the expansion ring sheet 5 is expanded, a sealing sheet 4 which is overlapped on the expansion ring sheet 5 is jointly extruded by the expansion ring sheet 5 and an end cover 3 to extrude the sealing sheet 4 in the expansion ring sheet 5, so that the sealing sheet 4, the inner pipe wall of a casing 1 and a cable body 2 are extruded and fixed into a whole, meanwhile, the sealing sheet 4 has a better sealing and waterproof effect and prevents the end cover 3 from falling off, and an installation position is provided for the installation of a shell.
The expansion ring piece 5 and the expansion ring 6 are spliced into a ring shape by adopting a left-right split structure, so that the use is convenient, the arranged sealing sheet 4 is pre-inserted on a cable or cut off the sealing sheet 4 for sleeving when in use, and the arranged shell is also split left and right, and is bonded and fixed after arriving at a site, so that the maintenance is convenient.
The casing be upper and lower components of a whole that can function independently structure, including last capsule 10 and lower capsule 11, end cover 3 on be provided with the parcel and seal swivel nut 12 on cable body 2, and wrap up and seal swivel nut 13 under on the sleeve pipe 1 lateral wall, last capsule 12, seal swivel nut 13 down and be provided with the external screw thread, last capsule 10 with the help of last swivel nut 12 and end cover 3 threaded connection, lower capsule 11 with the help of seal swivel nut 13 and end cover 3 threaded connection down. Go up the external screw thread that sets up on capsule 10 and the lower capsule 11 with the help of the end cover 3 of inside fixed, whole outward appearance is neat, does not have the metalwork to expose outside, has avoided corruption such as rainwater, and the casing adopts fire prevention material like electrician's wood, has good insulating properties simultaneously.
Further, the lower edge of the upper capsule 10 is arranged on the lower seal thread sleeve 13, and a capsule ring 14 is arranged between the lower edge of the upper capsule 10 and the upper edge of the lower capsule 11. The sealing ring 14 is pressed between the upper and lower capsules 10 and 11 after being screwed in, respectively, to seal the joint of the two capsules, which has a good sealing effect.
Further, be provided with the first trapezoidal sealing washer 15 that the cross-section is trapezoidal between last envelope 10 and the cable body 2, first trapezoidal sealing washer 15 suit on cable body 2, last envelope 10 go up along setting up to horn mouth column structure. A second trapezoidal sealing ring 16 with a trapezoidal section is arranged between the lower edge of the lower enclosure 11 and the sleeve 1, the second trapezoidal sealing ring 16 is sleeved on the sleeve 1, and the lower edge of the lower enclosure 11 is of a horn-mouth-shaped structure. The sealing structure has the advantages that the upper end and the lower end of the upper capsule 10 and the lower capsule 11 are sealed by the aid of the arranged first trapezoidal sealing ring 15 and the second trapezoidal sealing ring 16, the sealing structure with the trapezoidal structure is compressed when the corresponding capsules are screwed by the aid of the bell-mouth-shaped edges, the sealing rings are made of rubber materials and have certain elasticity, openings at the ends of the upper capsule and the lower capsule are filled with the sealing rings and are sealed, and the sealing performance of the shell is guaranteed.
Furthermore, a buffer cushion 17 is arranged between the end cover 3 and the sleeve 1, the sleeve 1 is made of metal, the end part of the sleeve is not flat, the arranged buffer cushion 17 prevents the end cover 3 from being damaged, and meanwhile, the buffer cushion plays a role in sealing the end cover 3 and the sleeve, and the sealing performance is improved.
Furthermore, the sealing piece 4 is coated with silica gel. After a fastening nut 9 is fastened on an end cover 3, silica gel is filled into the end cover 3 along the cable body 2, the fastening nut 9 is screwed continuously, so that the silica gel overflows from the space between the end cover 3 and the cable body 2, and better sealing is formed between a sealing sheet 4 on the lower side of the end cover 3 and the end cover 3, an expansion ring 6 is arranged to expand the lower end of an expansion ring sheet 5 at first, a sealing space is formed between the end cover 3 and the sealing sheet 4 by virtue of the sealing sheet 4, whether the sealing space is sealed or not can be detected by filling the silica gel at the moment, if the sealing space is not sealed, the sealing space can be filled with the silica gel, the silica gel is filled in the cable body 2 in a mode that a heat shrinkage pipe is sleeved on the cable body 2, the heat shrinkage pipe simultaneously wraps an upper sealing screw sleeve of the end cover 3, the silica gel is filled into the end cover 3 by virtue of a needle cylinder, so that, further improving the sealing effect.
Furthermore, the end of the sleeve 1 is provided with a waterproof elbow 18 with a semi-arc structure. The protection sealing cap is made to feed water in time, and water can be prevented from entering the sleeve 1 or entering the cable trench along the sleeve 1, so that normal and safe operation of the equipment is guaranteed.
The application has the advantages that:
1. compact structure, reasonable in design, easy and simple to handle, low cost, greatly reduced personnel's intensity of labour, improved the life of cable.
2. The suitability is strong, through reducing pipe box, can be suitable for more than 90% different specification's on the market cable and protection tube, cable application scope: the diameter is 80-120mm, the application range of the protection tube is as follows: the diameter is 150-;
3. the portable LED lamp is convenient to carry and install, attractive in product appearance, small in size, light in weight, easy to carry and simple and convenient to install, and installation is completed in a mode of fastening installation screws.
4. The cable waterproof coating has the advantages of long service life, capability of adapting to complex and severe environment by adopting outdoor high-strength plastic molding, capability of being used for more than 10 years in the environment with the height of 200 ℃ and the low temperature of minus 40 ℃, capability of realizing the plugging waterproof effect by adopting silicon rubber and having long service life and being fused with the cable waterproof coating.
5. Convenient operation, reasonable process and simple use.
This application adopts the inflation principle to seal, thickness and the sleeve pipe diameter degree of dependence to the cable are low, can carry out better shutoff to the high tension cable and the sleeve pipe of various sizes, plugging efficiency has been improved, whole device adopts insulating material and increases the fire retardant, fire behavior is excellent, be applicable to the cable protection pipe, the cable of transformer substation advances, all kinds of cable pipe orifice's such as outlet protection and shutoff, play waterproof simultaneously, prevent fires, insulating function, when overhauing, only need simple instrument just can dismantle, and it is convenient to reset, be convenient for the construction operation of early stage and the maintenance management in later stage, and no metalwork leaks outward, the dismouting is convenient, ageing resistance, insulating properties, waterproof and fire behavior, corrosion resisting property is good, the application scene is extensive.
This application is low to the thickness of cable and sleeve pipe diameter degree of dependence, can both carry out better shutoff to the high tension cable and the sleeve pipe of various sizes, whole device adopts insulating material and increases the fire retardant and prepare, fire behavior is excellent, be applicable to cable protection pipe, the orificial protection of all kinds of cables such as cable business turn over line mouth of transformer substation and shutoff, can play waterproof simultaneously, fire prevention, insulating function, the dismouting is convenient, be convenient for the maintenance management in construction operation in earlier stage and later stage, no metalwork leaks outward, the ageing resistance, insulating properties, waterproof and fireproof performance, corrosion resisting property is good, the application scene is extensive.
The application has the following main beneficial effects: compact structure, reasonable in design, easy and simple to handle, low cost, reduced personnel's intensity of labour, improved the life of cable, the suitability is strong, carry simple to operate, long service life, leakproofness are good.
The above-mentioned embodiments are merely preferred technical solutions of the present invention, and should not be construed as limiting the present invention. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (7)
1. The utility model provides a high tension cable protection pipe plugging device sets up the leading-out terminal at high tension cable, the leading-out terminal include sleeve pipe (1) and cable body (2), cable body (2) suit in sleeve pipe (1), sleeve pipe (1) tip set up the protection sealing cap, protection sealing cap overcoat be equipped with casing, its characterized in that: the protective sealing cap comprises an end cover (3) and an expansion sealing structure, wherein the end cover (3) is of an annular structure and is sleeved at the end part of the sleeve (1), the expansion sealing structure comprises a sealing sheet (4), an expansion ring sheet (5) and an expansion ring (6) which are sequentially arranged, the section of the expansion ring sheet (5) is of an n-shaped groove structure, expansion teeth (7) are respectively arranged on the inner side surface and the outer side surface of the expansion ring sheet (5) in a separating manner, the expansion ring (6) is arranged in the groove structure of the expansion ring sheet (5), through holes are correspondingly formed in the end cover (3) and the expansion ring sheet (5) in a penetrating manner, connecting screw rods (8) are arranged in the through holes, and the connecting screw rods (8) are fixed by means of fastening nuts (9) after sequentially penetrating through the expansion ring sheet (5), the sealing sheet (4) and the end cover (; the casing be upper and lower components of a whole that can function independently structure, including last capsule (10) and lower capsule (11), end cover (3) on be provided with the parcel and seal swivel nut (12) on cable body (2) and wrap up and seal swivel nut (13) down on sleeve pipe (1) lateral wall, last capsule (12), seal swivel nut (13) down and be provided with the external screw thread, last capsule (10) with the help of last capsule (12) and end cover (3) threaded connection, lower capsule (11) with the help of seal swivel nut (13) and end cover (3) threaded connection down, cable body (2) and last capsule (12) between the parcel have a heat shrink pipe, heat shrink pipe one end and cable body (2) suit, the other end suit is at the lateral surface of last capsule (12).
2. A high voltage cable protection tube plugging device according to claim 1, wherein: the lower edge of the upper sealing shell (10) is arranged on the lower sealing thread sleeve (13), and a sealing shell ring (14) is arranged between the lower edge of the upper sealing shell (10) and the upper edge of the lower sealing shell (11).
3. A high voltage cable protection tube blocking device according to claim 1 or claim 2, wherein: go up the last edge of capsule (10) and cable body (2) between be provided with the cross-section and be trapezoidal first trapezoidal sealing washer (15), first trapezoidal sealing washer (15) suit on cable body (2), last capsule (10) go up along setting up to horn mouth column structure.
4. A high voltage cable protection tube blocking device according to claim 3, wherein: the lower edge of the lower enclosure (11) and the sleeve (1) are provided with a second trapezoidal sealing ring (16) with a trapezoidal section, the second trapezoidal sealing ring (16) is sleeved on the sleeve (1), and the lower edge of the lower enclosure (11) is of a horn mouth-shaped structure.
5. A high voltage cable protection tube plugging device according to claim 4, wherein: a buffer pad (17) is arranged between the end cover (3) and the sleeve (1).
6. A high voltage cable protection tube plugging device according to claim 5, wherein: and silica gel is coated on the sealing piece (4).
7. A high voltage cable protection tube blocking device according to claim 6, wherein: the end part of the sleeve (1) is provided with a waterproof elbow (18) with a semicircular arc structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011077993.4A CN112072602A (en) | 2020-10-10 | 2020-10-10 | High tension cable protection pipe plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011077993.4A CN112072602A (en) | 2020-10-10 | 2020-10-10 | High tension cable protection pipe plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112072602A true CN112072602A (en) | 2020-12-11 |
Family
ID=73654999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011077993.4A Withdrawn CN112072602A (en) | 2020-10-10 | 2020-10-10 | High tension cable protection pipe plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112072602A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324288A (en) * | 2022-09-14 | 2022-11-11 | 广东省骏瑞建设工程有限公司 | Roofing floor antiseep structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204668893U (en) * | 2015-06-15 | 2015-09-23 | 鲁新民 | Expansion blockage |
| CN108832585A (en) * | 2018-07-03 | 2018-11-16 | 国网河北省电力有限公司石家庄供电分公司 | High-tension cable pyrocondensation waterproof sealing cap |
-
2020
- 2020-10-10 CN CN202011077993.4A patent/CN112072602A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204668893U (en) * | 2015-06-15 | 2015-09-23 | 鲁新民 | Expansion blockage |
| CN108832585A (en) * | 2018-07-03 | 2018-11-16 | 国网河北省电力有限公司石家庄供电分公司 | High-tension cable pyrocondensation waterproof sealing cap |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324288A (en) * | 2022-09-14 | 2022-11-11 | 广东省骏瑞建设工程有限公司 | Roofing floor antiseep structure |
| CN115324288B (en) * | 2022-09-14 | 2023-11-21 | 广东省骏瑞建设工程有限公司 | Leakage-proof structure for roof floor slab |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201211 |
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| WW01 | Invention patent application withdrawn after publication |