CN220190411U - Intelligent diameter-variable fireproof plugging device for cables - Google Patents
Intelligent diameter-variable fireproof plugging device for cables Download PDFInfo
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- CN220190411U CN220190411U CN202321772382.0U CN202321772382U CN220190411U CN 220190411 U CN220190411 U CN 220190411U CN 202321772382 U CN202321772382 U CN 202321772382U CN 220190411 U CN220190411 U CN 220190411U
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- flame retardant
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- retardant module
- hole
- modules
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- 239000003063 flame retardant Substances 0.000 claims abstract description 105
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 99
- 238000009434 installation Methods 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 239000000779 smoke Substances 0.000 claims description 11
- 239000000523 sample Substances 0.000 claims description 9
- 229920002943 EPDM rubber Polymers 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 description 8
- 230000000149 penetrating effect Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 3
- 241001465754 Metazoa Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The utility model relates to the technical field of cable laying, in particular to an intelligent variable-diameter fireproof plugging device for cables; the cable comprises a wall body and a cable which penetrates through the wall body from front to back, wherein a through hole is formed in the wall body, a mounting block is fixedly embedded in the through hole, and a mounting cavity which penetrates through the wall body from front to back is formed in the middle of the mounting block; a plurality of layers of flame-retardant modules distributed up and down are arranged in each installation cavity unit, and a diaphragm plate is arranged between every two adjacent layers of flame-retardant modules; each flame-retardant module is provided with a wire passing hole which is tightly attached to the side wall of the cable, an expansion type flame-retardant module is arranged between each installation cavity unit and the flame-retardant module, a bolt is screwed on the front surface of each expansion type flame-retardant module, the top end of each expansion type flame-retardant module is tightly attached to the inner top wall of the installation cavity, and the bottom end of each expansion type flame-retardant module is tightly attached to the top end of the flame-retardant module positioned on the upper layer; the problem of the current method of plugging the hole of cable through-wall position have the hole sealed not tight is solved.
Description
Technical Field
The utility model relates to the technical field of cable laying, in particular to an intelligent variable-diameter fireproof plugging device for cables.
Background
In the high-speed railway power operation, the main task of daily operation and maintenance of a power substation is to ensure the safety and reliability of power supply of power equipment, and when the cable is laid, high-low voltage power cables are often laid back and forth in cable trenches of a power distribution room, a power substation, a voltage regulating room and a reactor room, at the moment, holes at the crossing positions of the cable trenches are required to be plugged, and potential safety hazards of the equipment and the high-low voltage power cables can be caused due to the inexact plugging, so that the requirements on fire resistance, waterproofness and acid resistance of the positions and the biting prevention of small animals are high; the existing method for plugging the holes at the through-wall position of the cable mainly adopts a mode of fire-proof mud or fire-proof bag for plugging.
However, practice shows that the existing method for plugging the cable through-wall position by adopting a fire-proof mud or fire-proof bag mainly has the following problems: the fireproof mud is soft plugging mud, and if the waterproof mud is used in an air-dried place for a long time, the fireproof mud can be dehydrated, hardened and embrittled, and is easy to fall off after being exposed to external force, so that the hole at the wall-penetrating position of the cable is not tightly sealed; if the cable is used in an air-wet place for a long time, the texture of the fire-resistant mud can become softer so as to collapse, and further the hole sealing of the cable wall-penetrating position can be not tight; when the mode of placing the fireproof package stack and then arranging the fireproof plate is adopted, the fireproof plate is required to be manually cut according to the number and the positions of the cables, the cutting and the installation are more troublesome, the tightness of the holes in the wall penetrating positions of the cables is difficult to ensure, and meanwhile, small gaps on the fireproof plate can easily enable small animals to bite the fireproof package after crossing the fireproof plate.
Therefore, it is necessary to invent an intelligent variable diameter fireproof plugging device for cables to solve the problems.
Disclosure of Invention
The utility model provides an intelligent variable-diameter fireproof plugging device for cables, which aims to solve the problem of poor hole sealing existing in the existing method for plugging holes in a cable wall-penetrating position.
The utility model is realized by adopting the following technical scheme:
the intelligent variable-diameter fireproof plugging device for the cable comprises a wall body and a cable penetrating the wall body from front to back, wherein a through hole is formed in the wall body, a mounting block is fixedly embedded in the through hole, a mounting cavity penetrating from front to back is formed in the middle of the mounting block, N vertical baffles are fixed in the middle of the mounting cavity, the N vertical baffles divide the mounting cavity into N+1 mounting cavity units, and N is a positive integer greater than or equal to 1; a plurality of layers of flame-retardant modules distributed up and down are arranged in each installation cavity unit, the number of each layer of flame-retardant modules is a plurality of layers distributed left and right, and transverse baffles are arranged between every two adjacent layers of flame-retardant modules; and each flame-retardant module is provided with a wire passing hole which is tightly attached to the side wall of the cable, an expansion type flame-retardant module is arranged between each installation cavity unit and the flame-retardant module, bolts are screwed on the front surface of each expansion type flame-retardant module, the top end of each expansion type flame-retardant module is tightly attached to the inner top wall of the installation cavity, and the bottom end of each expansion type flame-retardant module is tightly attached to the top end of the flame-retardant module positioned on the upper layer.
Further, two adjacent flame retardant modules are mutually attached, each flame retardant module comprises an upper flame retardant module and a lower flame retardant module which are distributed up and down, an arc-shaped groove is formed in the lower surface of the upper flame retardant module and the upper surface of the lower flame retardant module, and two oppositely arranged arc-shaped grooves are combined into a wire passing hole.
Further, four limit portion homogeneity fixedly connected with of installation piece front surface is with the fixed plate of the outer wall laminating of wall body, has all offered a plurality of mounting hole on every fixed plate, and every fixed plate is fixed in on the wall body through screwing in the expansion bolts in the mounting hole.
Further, two fixing seats which are distributed up and down are arranged at the left part of the front surface of the mounting block, a water level gauge is fixed on the two fixing seats together, and a water level sensor is fixedly arranged at the bottom end of the water level gauge; the lower part of the installation block is provided with a water passing hole which is penetrated from front to back, and an electronic valve is arranged in the water passing hole.
Further, the front surface upper portion of installation piece is provided with smoke induction probe, and the front surface right part of installation piece is provided with control panel and alarm, and smoke induction probe, alarm, level sensor, electronic valve all with control panel electric connection.
Further, the flame retardant module and the expansion type flame retardant module are both made of ethylene propylene diene monomer rubber; and filling blocks are tightly filled in the wire through holes.
The utility model has reasonable and reliable structural design, realizes the purpose of tightly plugging the holes of the wall-penetrating positions of the cables, has good sealing effect, ensures that a plurality of cables penetrating through the wall are orderly arranged, can not interfere with each other, avoids friction between adjacent cables, and enhances the operation safety of the cables; secondly, the intelligent monitoring of the condition of the cable passing through the wall is realized, when the indoor air goes out to accumulate water or fire disaster, the alarm can be used for alarming in time, the dangerous situation can be handled by staff, and the harm is reduced to the minimum; further, the method has the advantage of long service life.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic cross-sectional view of the structure of the present utility model.
Fig. 3 is a schematic structural view of the flame retardant module according to the present utility model.
Fig. 4 is a schematic exploded view of the flame retardant module according to the present utility model.
In the figure: 1-wall, 2-cable, 3-installation block, 4-installation cavity, 5-vertical baffle, 6-flame retardant module, 7-diaphragm, 8-wire passing hole, 9-expansion type fire retardant module, 10-upper flame retardant module, 11-lower flame retardant module, 12-arc groove, 13-fixed plate, 14-expansion bolt, 15-fixed seat, 16-water level gauge, 17-water level sensor, 18-water passing hole, 19-electronic valve, 20-smoke sensing probe, 21-control panel, 22-alarm, 23-filling block, 24-bolt, 25-ground wire connector.
Detailed Description
An intelligent variable-diameter fireproof plugging device for cables is shown in the accompanying drawings 1 and 2, and comprises a wall body 1 and a cable 2 penetrating through the wall body 1 from front to back, wherein a through hole is formed in the wall body 1, a mounting block 3 is fixedly embedded in the through hole, a mounting cavity 4 penetrating through from front to back is formed in the middle of the mounting block 3, N vertical baffles 5,N are fixedly arranged in the middle of the mounting cavity 4, the mounting cavity 4 is divided into N+1 mounting cavity units by the aid of N vertical baffles 5, and N is a positive integer greater than or equal to 1; a plurality of layers of flame-retardant modules 6 distributed up and down are arranged in each installation cavity unit, the number of each layer of flame-retardant modules 6 is a plurality of layers distributed left and right, and a diaphragm 7 is arranged between every two adjacent layers of flame-retardant modules 6; the wire passing holes 8 which are tightly attached to the side walls of the cables 2 are formed in each flame retardant module 6, an expansion type flame retardant module 9 is arranged between each installation cavity unit and the flame retardant module 6, bolts 24 are screwed on the front surface of each expansion type flame retardant module 9, the top ends of the expansion type flame retardant modules 9 are tightly attached to the inner top wall of the installation cavity 4, and the bottom ends of the expansion type flame retardant modules 9 are tightly attached to the top ends of the flame retardant modules 6 located on the upper layer.
The combined structure design of the mounting block 3, the flame-retardant module 6, the diaphragm 7 and the wire passing hole 8 realizes the purpose of tightly plugging the holes of the wall passing position of the cable 2, has good sealing effect, ensures that a plurality of the wall passing cables 2 are orderly arranged, can not interfere with each other, avoids friction between adjacent cables 2, and enhances the operation safety of the cables 2; the bolt 24 can enlarge the volume of the expansion type fire-retardant module 9, so that the top end of the expansion type fire-retardant module 9 is abutted against the inner top wall of the installation cavity 4, the bottom end of the expansion type fire-retardant module is abutted against the upper surface of the flame-retardant module 6, and further downward acting force is transmitted to each layer of flame-retardant module 6, so that two adjacent layers of flame-retardant modules 6 are tightly connected, and meanwhile, the installation cavity 4 is filled with the expansion type fire-retardant module 9, and the tightness of the installation cavity 4 is improved; the structural design of the vertical baffle 5 can divide the installation cavity 4 into a plurality of installation cavity units, and each installation cavity unit is internally provided with a plurality of flame retardant modules 6, so that the arrangement of the cables 2 is tidier and more attractive, and the specification and the model of the cables 2 can be distinguished more conveniently.
During installation, firstly, a through hole is formed in a wall body 1, an installation block 3 is placed in the through hole and fixed on the wall body 1, gaps between the installation block 3 and the periphery of the through hole are filled with concrete to ensure firm installation and no gaps, then a vertical baffle plate 5 is placed in an installation cavity 4 and fixed, so that the installation cavity 4 forms two installation cavity units, then a first layer of flame-retardant modules 6 are placed in each installation cavity unit, meanwhile, a first layer of cables 2 are placed in a wire passing hole 8 of the flame-retardant modules 6, and then a transverse baffle plate 7 of the first layer is placed on the flame-retardant modules 6 of the first layer; then placing a second layer of flame retardant modules 6 on the diaphragm plates 7 of the first layer, simultaneously placing the cables 2 of the second layer in the wire through holes 8 of the flame retardant modules 6, and then placing the diaphragm plates 7 of the second layer on the flame retardant modules 6 of the second layer; then placing a third layer of flame retardant modules 6 on the diaphragm plates 7 of the second layer, simultaneously placing the cables 2 of the third layer in the wire through holes 8 of the flame retardant modules 6, and then placing the diaphragm plates 7 of the third layer on the flame retardant modules 6 of the third layer; then a fourth layer of flame retardant modules 6 are placed on the transverse partition plates 7 of the third layer, meanwhile, cables 2 of the fourth layer are placed in the wire passing holes 8 of the flame retardant modules 6, finally, an expansion type flame retardant module 9 is placed on the fourth layer of flame retardant modules 6, and bolts 24 on the expansion type flame retardant module 9 are rotated by means of tools, so that the volume of the expansion type flame retardant module 9 is increased, and each layer of flame retardant modules 6 are pressed in the installation cavity 4, so that the installation of the device is completed; the problem of the current method of plugging the hole of the through-wall position of the cable 2 that the hole is not tightly sealed is solved.
The apertures of the wire passing holes 8 of each layer of flame retardant modules 6 are the same, and when the specification and the model of the cable 2 are different, the flame retardant modules 6 with matched apertures can be selected according to actual requirements.
As shown in fig. 3 and fig. 4, two adjacent flame retardant modules 6 are attached to each other, each flame retardant module 6 includes an upper flame retardant module 10 and a lower flame retardant module 11 which are distributed up and down, an arc groove 12 is formed on the lower surface of the upper flame retardant module 10 and the upper surface of the lower flame retardant module 11, and two oppositely arranged arc grooves 12 are combined into a via hole 8.
The combined structure design of the upper flame retardant module 10, the lower flame retardant module 11 and the arc-shaped groove 12 realizes the fixation of the cables 2, and can separate any two adjacent cables 2, and meanwhile, the device is convenient to install and disassemble, and the applicability of the device is improved.
During installation, the lower flame-retardant module 11 is placed in the installation cavity 4, the cable 2 is placed in the arc-shaped groove 12 of the lower flame-retardant module 11, the upper flame-retardant module 10 is placed on the lower flame-retardant module 11, and the cable 2 is fixed in the wire through hole 8 formed by combining the two oppositely arranged arc-shaped grooves 12.
As shown in fig. 1 and 2, four edges of the front surface of the mounting block 3 are uniformly and fixedly connected with a fixing plate 13 attached to the outer wall of the wall body 1, each fixing plate 13 is provided with a plurality of mounting holes, and each fixing plate 13 is fixed on the wall body 1 through expansion bolts 14 screwed in the mounting holes.
The combined structure design of the fixing plate 13, the mounting hole 14 and the expansion bolt 14 can fix the mounting block 3 on the wall body 1, is firm in fixation and cannot easily fall off due to external environmental factors such as temperature, humidity and the like.
As shown in fig. 1, the left part of the front surface of the mounting block 3 is provided with two fixing seats 15 distributed up and down, the two fixing seats 15 are jointly fixed with a water level gauge 16, and the bottom end of the water level gauge 16 is fixedly provided with a water level sensor 17; the lower part of the mounting block 3 is provided with a water passing hole 18 which is penetrated from front to back, and an electronic valve 19 is arranged in the water passing hole 18.
The structural design of the fixing seat 15, the water level gauge 16 and the water level sensor 17 can monitor the water level condition of the through-wall position of the cable 2 at any time; when water accumulation occurs in the room, the electronic door valve 19 is opened, and the water passing hole 18 can discharge the water accumulation in the room; when no water is accumulated in the room, the electronic door valve 19 is in a closed state, so that the tightness of the wall-penetrating position of the cable 2 is ensured.
As shown in fig. 1, the upper part of the front surface of the mounting block 3 is provided with a smoke sensing probe 20, the right part of the front surface of the mounting block 3 is provided with a control panel 21 and an alarm 22, and the smoke sensing probe 20, the alarm 22, the water level sensor 17 and the electronic valve 19 are electrically connected with the control panel 21.
The design of the electric connection of the smoke sensing probe 20, the alarm 22, the water level sensor 17, the electronic valve 19 and the control panel 21 realizes the intellectualization of the device;
when water accumulation occurs in a room, the water level sensor 17 transmits a signal of water level change to the control panel 21, and the control panel 21 controls the alarm 22 to alarm, so that an operator can be alerted conveniently, dangerous situations can be handled timely, and loss is minimized;
when a fire disaster occurs indoors, the smoke sensing probe 20 transmits a signal of the occurrence of smoke to the control panel 21, and the control panel 21 controls the alarm 22 to alarm, so that the operator can be alerted conveniently, the dangerous situation can be handled timely, and the loss can be minimized.
As shown in fig. 1, the flame retardant module 6 and the expansion type flame retardant module 9 are both made of ethylene propylene diene monomer rubber; the via hole 8 is tightly filled with a filling block 23.
The ethylene propylene diene monomer rubber has low density and high filling property, so that the cable 2 and the flame retardant module 6, the flame retardant module 6 and the expansion type flame retardant module 9 and the installation cavity 4 are tightly attached, the sealing property of the device is enhanced, the cable 2 can be better protected, and meanwhile, the ethylene propylene diene monomer rubber also has heat resistance, ageing resistance and corrosion resistance, and the service life of the device is prolonged; the structural design of the filling block 23 can play a role in protecting the wire through hole 8 in the transportation process of the device, and the wire through hole 8 is prevented from being damaged or deformed due to jolt or extrusion; when the cable-through device is used, the filling blocks 23 in the via holes 8 are taken out, and the filling blocks 23 can play a role in plugging in the via holes 8 of which parts do not penetrate through the cable 2.
In a specific implementation process, the bolt 24 is an expansion bolt; the front surface of the mounting block 3 is fixedly provided with a ground wire connector 25, the ground wire connector 25 is connected with a ground wire cable of equipment in the substation, and when the ground wire cable is damaged and leaked, the electric discharge can be timely performed to protect the equipment in the substation.
In the description of the present utility model, it should be understood that the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is merely for convenience in describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an intelligent variable diameter fire prevention plugging device for cable, runs through cable (2) of wall body (1) its characterized in that around wall body (1) and: the wall body (1) is provided with a through hole, a mounting block (3) is fixedly embedded in the through hole, a mounting cavity (4) which is communicated front and back is formed in the middle of the mounting block (3), N vertical baffles (5) are fixed in the middle of the mounting cavity (4), the N vertical baffles (5) divide the mounting cavity (4) into N+1 mounting cavity units, and N is a positive integer greater than or equal to 1; a plurality of layers of flame retardant modules (6) distributed up and down are arranged in each installation cavity unit, the number of each layer of flame retardant modules (6) is a plurality of layers distributed left and right, and a diaphragm plate (7) is clamped between every two adjacent layers of flame retardant modules (6); wire passing holes (8) which are tightly attached to the side walls of the cables (2) are formed in each flame retardant module (6), expansion type flame retardant modules (9) are arranged between each installation cavity unit and the flame retardant module (6), bolts (24) are screwed on the front surface of each expansion type flame retardant module (9), the top ends of the expansion type flame retardant modules (9) are tightly attached to the inner top wall of the installation cavity (4), and the bottom ends of the expansion type flame retardant modules are tightly attached to the top ends of the flame retardant modules (6) located on the upper layer.
2. The intelligent variable-diameter fireproof plugging device for cables according to claim 1, wherein: adjacent two flame retardant modules (6) are mutually attached, each flame retardant module (6) comprises an upper flame retardant module (10) and a lower flame retardant module (11) which are distributed up and down, the lower surface of the upper flame retardant module (10) and the upper surface of the lower flame retardant module (11) are provided with arc grooves (12), and the two arc grooves (12) which are oppositely arranged are combined into a wire passing hole (8).
3. The intelligent variable-diameter fireproof plugging device for cables according to claim 1, wherein: four limit portion homogeneity fixedly connected with of installation piece (3) front surface with fixed plate (13) of the outer wall laminating of wall body (1), a plurality of mounting hole has all been seted up on every fixed plate (13), and every fixed plate (13) is fixed in on wall body (1) through screwing in expansion bolts (14) in the mounting hole.
4. The intelligent variable-diameter fireproof plugging device for cables according to claim 1, wherein: two fixing seats (15) which are distributed up and down are arranged at the left part of the front surface of the mounting block (3), a water level gauge (16) is fixed on the two fixing seats (15) together, and a water level sensor (17) is fixedly arranged at the bottom end of the water level gauge (16); the lower part of the mounting block (3) is provided with a water passing hole (18) which is penetrated from front to back, and an electronic valve (19) is arranged in the water passing hole (18).
5. The intelligent variable-diameter fireproof plugging device for cables according to claim 4, wherein: the smoke sensor is characterized in that a smoke sensing probe (20) is arranged on the upper portion of the front surface of the mounting block (3), a control panel (21) and an alarm (22) are arranged on the right portion of the front surface of the mounting block (3), and the smoke sensing probe (20), the alarm (22), the water level sensor (17) and the electronic valve (19) are electrically connected with the control panel (21).
6. The intelligent variable-diameter fireproof plugging device for cables according to claim 1, wherein: the flame retardant module (6) and the expansion type flame retardant module (9) are both made of ethylene propylene diene monomer rubber; and filling blocks (23) are tightly filled in the wire through holes (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321772382.0U CN220190411U (en) | 2023-07-07 | 2023-07-07 | Intelligent diameter-variable fireproof plugging device for cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321772382.0U CN220190411U (en) | 2023-07-07 | 2023-07-07 | Intelligent diameter-variable fireproof plugging device for cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220190411U true CN220190411U (en) | 2023-12-15 |
Family
ID=89103835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321772382.0U Active CN220190411U (en) | 2023-07-07 | 2023-07-07 | Intelligent diameter-variable fireproof plugging device for cables |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220190411U (en) |
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2023
- 2023-07-07 CN CN202321772382.0U patent/CN220190411U/en active Active
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