CN109768519B - Novel cable intermediate head operation protection device - Google Patents
Novel cable intermediate head operation protection device Download PDFInfo
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- CN109768519B CN109768519B CN201910169655.4A CN201910169655A CN109768519B CN 109768519 B CN109768519 B CN 109768519B CN 201910169655 A CN201910169655 A CN 201910169655A CN 109768519 B CN109768519 B CN 109768519B
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- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims description 16
- 238000004880 explosion Methods 0.000 claims description 10
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 230000000007 visual effect Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 4
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 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
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The invention discloses a novel cable intermediate joint operation protection device, which comprises a cable head erection well, wherein two cable end heads are arranged in the cable head erection well and are in butt joint connection to form a cable intermediate joint, a plurality of cover plates are covered on the cable head erection well 1, the novel cable intermediate joint operation protection device further comprises a fire extinguishing device and a first stay wire, a shell is arranged on an outer sealing cover of the cable intermediate joint, the fire extinguishing device is arranged in the shell, one end of the first stay wire is wound outside the cable intermediate joint, the other end of the first stay wire is connected to the fire extinguishing device, the first stay wire is disconnected to trigger the fire extinguishing device to extinguish a fire, and an alarm device is connected outside the shell.
Description
Technical Field
The invention relates to an intermediate joint operation protection device, in particular to a novel cable intermediate joint operation protection device.
Background
With the development of cities and the progress of technologies, the application of power cables in power transmission and distribution networks has been greatly developed, the safe and stable operation of cable lines is also more and more important, and the conventional power cable intermediate well structure at present: the cable coil wells are arranged at the two ends, the cable head erection well is arranged in the middle of the cable coil wells, and the two ends of the cable head are suspended on the carrying circular tubes. According to practical cable operation experience, the conventional cable line fault eliminates an important factor of external force damage, and basically only the middle head fault is left. The related data show that the failure rate of the middle head of the cable accounts for about 85 percent of the total cable failure, and the failure rate comprises various reasons such as manufacturing quality reasons, product quality reasons, operation environment factors and the like. The fault of the middle head of the cable interrupts power supply, and simultaneously, the risk of fire is often accompanied, and the excessive fire burning of other common-well cables is easily caused, so that larger power supply risk and economic loss are caused.
At present, no corresponding excellent protection device is developed for the cable middle head in the market, a part of protection cover is coated by a glass fiber reinforced plastic material integral shell, and the part of protection cover is further provided with a fire extinguishing spray system in a shell, but the protection cover has the following defects: the system body is huge and can not adapt to the space requirement of the tight arrangement of the cables in the cable well, the inconvenience is brought to the temperature detection and the internal observation in the daily operation process, and meanwhile, the external warning device of the cable well is lacked for the fault cable, so that the requirement of the actual operation can not be completely met.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the novel cable intermediate joint operation protection device which has the technical characteristics of high efficiency, flame retardance, convenience in maintenance, quick reminding and the like.
In order to achieve the above purpose, the present invention is realized by the following technical scheme:
the utility model provides a novel cable intermediate head operation protection device, includes cable head erects the well, be provided with the cable intermediate head that two cable end butt joint formed in the cable head erects the well, cable head erects well 1 upper cover and has a plurality of apron, still includes extinguishing device, a stay wire, cable intermediate head outer sealed cowling is equipped with a casing, extinguishing device installs in the casing, a stay wire one end winding is outside cable intermediate head, and the other end is connected on extinguishing device, breaks off a stay wire in order to trigger extinguishing device and put out a fire, still be connected with alarm device outside the casing, alarm device includes visual alarm, audible alarm and data backstage alarm.
As an improvement, the fire extinguishing device comprises a dry powder fire extinguishing ball arranged on the shell, wherein the dry powder fire extinguishing ball is connected with an explosion lead wire wound on the middle head of the cable, and when the middle head of the cable burns, the explosion lead wire is directly ignited to enable the dry powder fire extinguishing ball to self-explode and throw dry powder for extinguishing fire.
As an improvement, extinguishing device includes fire extinguisher bottle, connecting rod, needle, the valve gap of taking the cavity and installs the holding box in the casing, fire extinguisher bottle fixed mounting is in the holding box, slidable is provided with the sealed head that can open the fire extinguisher bottle in the fire extinguisher bottle bottleneck, valve gap connection is on the fire extinguisher bottle bottleneck, all seted up the through-hole on the outer peripheral face of valve gap and the valve gap that is located fire extinguisher bottle bottleneck department, valve needle one end runs through the valve gap and stretches into in the fire extinguisher bottle bottleneck, and the other end slidable connects on the connecting rod, is fixed with the dog on the valve needle that is located the valve gap, the cover is equipped with reset spring on the valve needle, reset spring one end is connected with the dog, and the other end is connected with valve gap upper end inner wall, connecting rod one end articulates at the valve gap, and the other end is connected with a guy wire, and constitutes laborsaving lever in order to reduce a guy between connecting rod and the valve needle, sealed head and valve needle linkage so that the fire extinguisher bottle passes through the through-hole and external intercommunication.
As an improvement, the visual alarm comprises a second stay wire, a cross rod and a swinging rod, a gap is reserved between any two cover plates, the cross rod is arranged between the gaps, two ends of the cross rod are respectively connected with the two cover plates, the swinging rod is connected to the cross rod between the gaps, one end of the swinging rod is connected with a warning signal flag, the other end of the swinging rod is connected with a balancing weight, one end of the second stay wire is connected with the swinging rod and is close to the warning signal flag, and the other end of the second stay wire is wound outside the middle head of the cable.
As an improvement, be provided with the relief valve on the casing, the relief valve includes the valve body, valve body 17 lower extreme and side all are equipped with the gas vent, wear to establish the piston rod in the valve body, the piston rod end is provided with the piston, and the gas vent size, the size that lie in the valve body lower extreme are all less than the size, the size of piston, the piston rod overcoat has the spring, spring one end is connected in the valve body upper end, and one end is connected on the piston.
As an improvement, butyl waterproof glue is arranged between two ports of the shell and the cable, and the shell is made of transparent PC material.
As an improvement, audible alarm includes tweeter, LED lamp, battery, GPRS antenna, solar cell panel, magnetic contact switch and has communication unit's treater, the series connection is formed with warning circuit between tweeter, treater, LED lamp, battery, GPRS antenna, solar cell panel, the magnetic contact switch, solar cell panel, the LED lamp is all installed on the apron upper surface, magnetic contact switch one end is fixed on the casing, and the other end is fixed on the piston, and magnetic contact switch closure warning circuit switch-on when the piston is jacked.
As an improvement, the shell is any one of a cylinder, a cuboid, a cube and a special-shaped body.
As an improvement, the valve cover is connected with the bottle mouth of the fire extinguisher bottle 8 in a threaded manner.
As an improvement, a fixed pulley is connected to the housing, and the first pull wire is wound around the fixed pulley to straighten the first pull wire 4 horizontally and longitudinally.
The beneficial effects are that: the method has the advantages that the method is convenient for operators to quickly locate faults during daily inspection or special inspection of faults, avoids the situation that the cover plate is lifted up to find faults in a large-scale high-strength well-by-well mode, shortens the rush repair reflecting time and greatly reduces the working strength; the excessive fire burning of other common-well cables caused by the fault burning of the middle head of one cable is avoided, and the probability of larger power supply risk and economic loss is reduced; the shell is provided with a space isolated from the outside, so that the shell can isolate moisture and air and is helpful for the anoxic extinction of the flame; the transparent PC material is adopted for manufacturing, so that the internal state can be conveniently observed, and the transparent PC material has good insulating capability; the shell is not easy to be damaged by explosion impact force; the structure is simple, and the practicability is strong; the gas fire extinguishing is not easy to cause short circuit of the cable connector and secondary damage to the line.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a view showing one of the states of use of the fire extinguishing apparatus of the present invention.
FIG. 3 is a second view of the state of use of the fire extinguishing apparatus of the present invention.
Fig. 4 is a schematic structural diagram of a warning device in embodiment 1 of the present invention.
Fig. 5 is a side view of the housing of the present invention.
FIG. 6 is a diagram showing the state of the pressure release valve according to the present invention
FIG. 7 is a second embodiment of the pressure relief valve of the present invention.
Fig. 8 is a schematic structural diagram of a warning device in embodiment 2 of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to the following examples.
Example 1
The specific embodiment of the novel cable intermediate joint operation protection device is shown in figures 1-7, and comprises a cable head erection well 1, wherein two cable head butt joint connection formed cable intermediate heads 2 are arranged in the cable head erection well 1, a plurality of cover plates 3 are covered on the cable head erection well 1, the novel cable intermediate joint operation protection device further comprises a fire extinguishing device and a first stay wire 4, a shell 6 is arranged on the outer sealing cover of the cable intermediate heads 2, the fire extinguishing device is arranged in the shell 6, the whole cable intermediate heads 2 are covered in the shell 6 to play a role of protecting and enhancing insulation, and because the shell 6 forms a space isolated with the outside, the novel cable intermediate joint operation protection device can isolate water vapor and air, also is helpful for extinguishing hypoxia of flames, avoids overburning caused by faults of the cable intermediate heads 2, and the alarm device is arranged outside the shell 6, the application preferably extends the alarm device out of the cable head erection well 1, and can also be arranged in the cable head erection well 1 to protect the alarm device, one end of the first stay wire 4 is wound outside the cable middle head 2, the other end of the first stay wire is connected to the fire extinguishing device, the first stay wire 4 is disconnected to trigger the fire extinguishing device to extinguish fire, the alarm device is also connected outside the shell 6, the alarm device comprises a visual alarm, an audible alarm and a data background alarm, when the cable middle head 2 breaks down to cause combustion, the first stay wire 4 can be burnt by fire, when the first stay wire 4 is burnt, the fire extinguishing device which is in tension connection with the first stay wire 4 is triggered to extinguish fire by the fire extinguishing device, the overburning of other common-well cables caused by the fault combustion of a certain cable middle head 2 is avoided, the probability of larger power supply risk and economic loss is reduced, meanwhile, the alarm device is triggered, the alarm device sends out to remind operators of abnormal phenomena of the cable in the well, so that the operators can conveniently and rapidly locate faults during daily inspection or special fault inspection, the faults are avoided being searched by lifting the cover plate in a large-scale high-strength well by well, the rush repair reflecting time is shortened, and the working strength is greatly reduced.
As an improvement, the fire extinguishing device comprises a dry powder fire extinguishing ball 7 arranged on a shell 6, wherein the dry powder fire extinguishing ball 7 is connected with an explosion lead wire wound on a cable middle head 2, and when the cable middle head 2 burns, the explosion lead wire is directly ignited to enable the dry powder fire extinguishing ball 7 to self-explode and throw dry powder for fire extinguishing; the dry powder fire extinguishing ball 7 is arranged in the shell 6, the dry powder fire extinguishing ball 7 is connected with an explosion lead wire wound on the cable middle head 2, and when the cable middle head 2 burns, the explosion lead wire is directly ignited to enable the dry powder fire extinguishing ball 7 to self-explode and throw dry powder for fire extinguishing.
As an improved embodiment, the fire extinguishing device comprises a fire extinguisher bottle 8, a connecting rod 29, a valve needle 11, a valve cover 9 with a cavity and a containing box 10 arranged in a shell 6, wherein the fire extinguisher bottle 8 is fixedly arranged in the containing box 10, a sealing head 30 capable of opening the fire extinguisher bottle 8 is slidably arranged in the bottle opening of the fire extinguisher bottle 8, the sealing head 30 can be connected with an elastic component to ensure firm propping of the sealing head 30, the sealing head 9 is in a normally closed state, the valve cover 9 is connected to the bottle opening of the fire extinguisher bottle 8, one end of the valve needle 11 penetrates through the valve cover 9 and stretches into the bottle opening of the fire extinguisher bottle 8, the other end of the valve needle 11 is slidably connected to the connecting rod 29, a stop 32 is fixed on the valve needle 11 positioned in the valve cover 9, one end of the valve needle 11 is sleeved with a reset spring 12, the other end of the reset spring 12 is connected with the stop 32, one end of the connecting rod 29 is hinged to the valve cover 9, the other end of the connecting rod is connected with a wire 4, the valve needle 11 is not pulled by the stop 32, and simultaneously, a pull wire 11 is pulled by the reset wire 11 is pulled by the stop wire 2 to be pulled by the stop wire 2, and is not pulled by the stop wire 2, and is contacted by the stop wire, and is not pulled by the stop wire, and is contacted by the stop wire, and is 3, and is positioned by the stop wire, and is 3, so that the fire extinguisher bottle 8 is opened, the fire retardant gas in the fire extinguisher bottle 8 is rapidly released into the housing 6 through the through hole 8 to extinguish the fire of the cable intermediate head 2, and the fire extinguisher bottle 8 preferably contains carbon dioxide.
As an improved embodiment, the visual alarm comprises a second stay wire 5, a cross rod 13 and a swinging rod 14, wherein a gap is reserved between any two cover plates 3 covered on a cable head erection well 1, the cross rod 13 is arranged between the gaps, two ends of the cross rod 13 are respectively connected with the two cover plates 3, the middle position of the swinging rod 14 is connected to the cross rod 13 through a pin shaft so as to enable the swinging rod 14 to swing to extend out of the gap of the cover plates 3, one end of the swinging rod 14 is connected with a warning signal flag 15, the other end of the swinging rod 14 is connected with a balancing weight 16, the second stay wire 5 is connected with the swinging rod 14 and is close to the warning signal flag 15, under the pull of the second stay wire 5, the two ends of the swinging rod 14 are approximately stressed, the swinging rod 14 is positioned between the two cable shaft cover plates, at the moment, the warning signal flag 15 on the swinging rod 14 is horizontally laid under the well surface, when the second stay wire 5 is burnt, one end of the swinging rod 14 provided with the warning signal flag 15 loses the pulling force, the swinging rod 14 is unbalanced under the action of the balancing weight 16, the swinging rod 14 is caused to swing the warning signal flag 15 to extend out of the well surface from the gap, and the well surface is achieved, and the fault finding function is convenient for operators to find out faults.
As an improved embodiment, a pressure release valve is arranged on the shell 6, the pressure release valve comprises a valve body 17, the lower end and the side surface of the valve body 17 are both provided with a gas release port 18, a piston rod 19 is arranged in the valve body 17 in a penetrating manner, the tail end of the piston rod 19 is provided with a piston 20, the size and the dimension of the gas release port 18 at the lower end of the valve body 17 are smaller than those of the piston 20, a spring 21 with smaller elasticity is sleeved outside the piston rod 19, one end of the spring 21 is connected at the upper end of the valve body 17, and the other end of the spring 21 is connected on the piston 20.
As an improved embodiment, butyl waterproof glue 22 is arranged between the shell 6 and the cable, the shell 6 is made of transparent PC material, and the shell 6 is made of transparent PC material, so that the internal state can be conveniently observed, and the cable has good insulating capability.
As an improvement, the housing 6 is any one of a cylinder, a cuboid, a cube and a profile, and is selected according to the space of the cable head erection well 1.
As an improvement, the valve cover 9 is in threaded connection with the bottle mouth of the fire extinguisher bottle 8, so that the installation is simple, and the disassembly and the replacement are convenient.
As an improvement, a fixed pulley 33 is connected in the casing 6, and the first pull wire 4 is arranged around the fixed pulley 33 to straighten the first pull wire 4 horizontally and longitudinally.
Example 2
As shown in fig. 8, as an improved embodiment, the audible alarm comprises a tweeter, an LED lamp 23, a storage battery 24, a GPRS antenna 25, a solar panel 26, a magnetic contact switch 27 and a processor 28 with a communication unit, wherein the tweeter, the processor 28, the LED lamp 23, the storage battery 24, the GPRS antenna 25, the solar panel 26 and the magnetic contact switch 27 are connected in series to form a warning circuit, the solar panel 26 and the LED lamp 23 are all installed on the upper surface of the cover plate 3, one end of the magnetic contact switch 27 is fixed on the shell 6, the other end of the magnetic contact switch is fixed on the piston 20, when the piston 20 is jacked, the magnetic contact switch is closed and warned by a warning circuit, the magnetic contact switch 27 is adsorbed together under the magnetic action, manual reset is needed, the solar panel 26 absorbs solar energy and is replaced in the electric energy storage battery 24, when the cable intermediate head 2 breaks down and causes explosion in the combustion, the piston 20 is jacked up, the contacts of the magnetic contact switch 27 are closed and a loop, at this moment, the LED lamp of the cover plate 3 starts to flash, the tweeter sends out sound warning information to the specific position of the communication unit 25 or the communication unit is prevented from being raised, the warning signal is reduced in the range of the special warning signal of the fault position of the manhole, the user is reduced, the intensity of the warning signal is required to be found out, and the people can run in the special warning the fault or the fault position is quickly, and the warning signal is required to be located in the special position of the manhole, and the fault position of the user.
Finally, it should be noted that the invention is not limited to the above embodiments, but that many variants are possible. All modifications directly derived or suggested to one skilled in the art from the present disclosure should be considered as being within the scope of the present invention.
Claims (8)
1. The utility model provides a novel cable intermediate head operation protection device, includes cable head erects well (1), be provided with cable intermediate head (2) that two cable end butt joints formed in cable head erects well (1), cable head erects well (1) upper cover and has a plurality of apron (3), its characterized in that: the fire extinguishing device is characterized by further comprising a fire extinguishing device and a first stay wire (4), wherein a shell (6) is arranged on the outer sealing cover of the cable middle head (2), the fire extinguishing device is arranged in the shell (6), one end of the first stay wire (4) is wound outside the cable middle head (2), the other end of the first stay wire is connected to the fire extinguishing device, the first stay wire (4) is disconnected to trigger the fire extinguishing device to extinguish a fire, an alarm device is further connected outside the shell (6), and the alarm device comprises a visual alarm, an audible alarm and a data background alarm;
the fire extinguishing device comprises a dry powder fire extinguishing ball (7) arranged in a shell (6), wherein the dry powder fire extinguishing ball (7) is connected with an explosion lead wire wound on a cable intermediate head (2), and when the cable intermediate head (2) burns, the explosion lead wire is directly ignited to enable the dry powder fire extinguishing ball (7) to self-explode and throw dry powder for extinguishing a fire;
the fire extinguishing device comprises a fire extinguisher bottle (8), a connecting rod (29), a valve needle (11), a valve cover (9) with a cavity and a containing box (10) arranged in a shell (6), wherein the fire extinguisher bottle (8) is fixedly arranged in the containing box (10), a sealing head (30) capable of opening the fire extinguisher bottle (8) is slidably arranged in the opening of the fire extinguisher bottle (8), the valve cover (9) is connected to the opening of the fire extinguisher bottle (8), through holes (31) are formed in the valve cover (9) at the opening of the fire extinguisher bottle (8) and the outer peripheral surface of the valve cover (9), one end of the valve needle (11) penetrates through the valve cover (9) and extends into the opening of the fire extinguisher bottle (8), the other end of the valve needle (11) is slidably connected to the connecting rod (29), a stop block (32) is fixedly arranged on the valve needle (11) arranged in the valve cover (9), one end of the valve needle (11) is connected with the stop block (32), the other end of the valve needle (11) is connected with the inner wall of the valve cover (9), one end of the valve cover is hinged to one end of the connecting rod (29), one end of the valve needle (29) is hinged to one end of the valve cover (4) and one end of the other end is connected with the other end of the valve cover (4 through a pull wire (4), the sealing head (30) is linked with the valve needle (11) so as to enable the fire extinguisher bottle (8) to be communicated with the outside through the through hole (31).
2. The novel cable intermediate head operation protection device according to claim 1, wherein: the visual alarm comprises a second stay wire (5), a cross rod (13) and a swinging rod (14), a gap is reserved between any two cover plates (3), the cross rod (13) is arranged between the gaps, two ends of the cross rod are connected with the two cover plates (3) respectively, the swinging rod (14) is connected to the cross rod (13) between the gaps, one end of the swinging rod (14) is connected with a warning signal flag (15), the other end of the swinging rod is connected with a balancing weight (16), one end of the second stay wire (5) is connected to the swinging rod (14) and is close to the warning signal flag (15), and the other end of the second stay wire is wound outside the cable middle head (2).
3. The novel cable intermediate head operation protection device according to claim 1, wherein: be provided with the relief valve on casing (6), the relief valve includes valve body (17), valve body (17) lower extreme and side all are equipped with and let out gas port (18), wear to establish piston rod (19) in valve body (17), piston rod (19) end is provided with piston (20), is located the size, the size of let out gas port (18) of valve body (17) lower extreme all to be less than the size, the size of piston (20), piston rod (19) overcoat has spring (21), spring (21) one end is connected in valve body (17) upper end, and one end is connected on piston (20).
4. The novel cable intermediate head operation protection device according to claim 1, wherein: butyl waterproof glue (22) is arranged between the two ends of the shell (6) and the cable, and the shell (6) is made of transparent PC material.
5. A novel cable intermediate head operation protection device according to claim 3, wherein: the audible alarm comprises a tweeter, an LED lamp (23), a storage battery (24), a GPRS antenna (25), a solar panel (26), a magnetic contact switch (27) and a processor (28) with a communication unit, wherein a warning circuit is formed by series connection among the tweeter, the processor (28), the LED lamp (23), the storage battery (24), the GPRS antenna (25), the solar panel (26) and the magnetic contact switch (27), the solar panel (26) and the LED lamp (23) are all installed on the upper surface of a cover plate (3), one end of the magnetic contact switch (27) is fixed on a shell (6), the other end of the magnetic contact switch is fixed on a piston (20), and the magnetic contact switch is closed and the warning circuit is connected when the piston (20) is jacked up.
6. The novel cable intermediate head operation protection device according to claim 1, wherein: the shell (6) is any one of a cylinder, a cuboid and a special-shaped body.
7. The novel cable intermediate head operation protection device according to claim 1, wherein: the valve cover (9) is connected to the opening of the fire extinguisher bottle (8) through threads.
8. The novel cable intermediate head operation protection device according to claim 1, wherein: the shell (6) is internally connected with a fixed pulley (33), and the first stay wire (4) bypasses the fixed pulley (33) to enable the first stay wire (4) to be horizontally and longitudinally straightened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910169655.4A CN109768519B (en) | 2019-03-07 | 2019-03-07 | Novel cable intermediate head operation protection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910169655.4A CN109768519B (en) | 2019-03-07 | 2019-03-07 | Novel cable intermediate head operation protection device |
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| CN109768519A CN109768519A (en) | 2019-05-17 |
| CN109768519B true CN109768519B (en) | 2024-04-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474269B (en) * | 2019-08-27 | 2020-09-04 | 南京溧水高新创业投资管理有限公司 | Safety wire slot for preventing short circuit |
| CN111276908A (en) * | 2020-02-13 | 2020-06-12 | 王欣欣 | Cable construction draw gear for power engineering |
| CN111569322B (en) * | 2020-05-09 | 2023-04-28 | 山西神通电力工程有限公司 | Short-circuit-preventing rapid fire extinguishing device for high-altitude low-voltage power transmission cable |
| CN111934262A (en) * | 2020-08-20 | 2020-11-13 | 马鞍山市凯通新能源科技有限公司 | Electric wire fixing device with alarm function |
| CN112186703B (en) * | 2020-09-01 | 2021-11-09 | 江苏恒辉电气有限公司 | Special control cable for intelligent control device |
| CN113258505B (en) * | 2021-05-24 | 2021-12-03 | 江苏宏达电气有限公司 | Cable joint insulating plug installation tool and installation method |
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| KR20130005330U (en) * | 2012-03-01 | 2013-09-11 | 이건희 | Fire Extinguishing For circuit Box |
| KR101246281B1 (en) * | 2013-01-09 | 2013-03-26 | 주식회사 세광플러스 | Underground power line support apparatus |
| CN108039692A (en) * | 2017-10-19 | 2018-05-15 | 国网浙江杭州市萧山区供电公司 | A kind of cable connector explosion-proof fire-extinguishing protecting box |
| CN108134319A (en) * | 2018-02-08 | 2018-06-08 | 嘉兴市宏日光伏科技有限公司 | A kind of security power power distribution cabinet with warning function |
| CN208028429U (en) * | 2018-03-06 | 2018-10-30 | 新昌县金瓯新能源科技有限公司 | A kind of regularization electric wiring cross box |
| CN209472371U (en) * | 2019-03-07 | 2019-10-08 | 吴天钢 | A kind of novel cable transition joint running protection device |
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| CN109768519A (en) | 2019-05-17 |
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