CN216436683U - Air pollution discharge structure of cable interlayer - Google Patents
Air pollution discharge structure of cable interlayer Download PDFInfo
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- CN216436683U CN216436683U CN202122683549.3U CN202122683549U CN216436683U CN 216436683 U CN216436683 U CN 216436683U CN 202122683549 U CN202122683549 U CN 202122683549U CN 216436683 U CN216436683 U CN 216436683U
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- Prior art keywords
- air
- cable
- cable interlayer
- blowdown
- air supply
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- 239000011229 interlayer Substances 0.000 title claims abstract description 48
- 238000003915 air pollution Methods 0.000 title description 3
- 230000001105 regulatory effect Effects 0.000 claims description 24
- 238000004804 winding Methods 0.000 claims description 9
- 239000010410 layer Substances 0.000 claims description 8
- 238000012806 monitoring device Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 206010003497 Asphyxia Diseases 0.000 abstract description 2
- 238000009423 ventilation Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 15
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
At present, a large number of cable interlayers exist in substations of various voltage classes, the existing cable interlayers have no ventilation devices, harmful gas cannot be found and discharged in time, maintenance personnel need to frequently enter the substation cable interlayers, and a large suffocation risk exists.
Description
Technical Field
The utility model belongs to the technical field of the track traffic power supply, concretely relates to interbedded blowdown air structure of cable.
Background
At present, a large number of cable interlayers exist in transformer substations of various voltage classes, the existing cable interlayers are not provided with ventilation devices, harmful gas cannot be timely found and discharged, and operation and maintenance staff need to frequently enter the transformer substation cable interlayers according to the requirements of operation and maintenance of equipment in the cable interlayers, field operation and the like, so that a large suffocation risk exists. In addition, in recent years, the operation safety accidents in the limited space inside and outside the system are frequent, and the most important root cause is that harmful gases in the limited space cannot be found in time and automatically discharged, except for improper reasons of operation and rescue.
Then, a technician effectively exhausts harmful gas in the cable interlayer by designing an exhaust device in the cable interlayer, but the cable interlayer has a complex structure and a plurality of dead corners, and the harmful gas in the dead corners cannot be exhausted smoothly.
Application number 202110388873.4 "the visual monitored control system of urban rail transit substation cable intermediate layer" provides a monitored control system, can monitor cable intermediate layer in-situ cable temperature, foreign matter break into, ambient temperature, smog, light sudden change, SF6 are gaseous etc. implement inspection and malfunction alerting, the utility model discloses based on this monitored control system, a cable intermediate layer's blowdown air structure is provided.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is that the structure is complicated in the cable intermediate layer, has a great deal of dead angle, and harmful gas in the dead angle often can't be discharged smoothly, for solving above-mentioned problem, the utility model provides a cable intermediate layer's blowdown air structure.
The purpose of the utility model is realized with the following mode: a sewage air structure of a cable interlayer comprises the cable interlayer, an air supply device is laid on the ground of the cable interlayer, and a device for sucking polluted air is fixed on the top surface of the cable interlayer.
Furthermore, an air supply device laid on the ground is laid along an included angle between the ground and the wall, and the polluted air suction device is fixed on the top surface of the cable interlayer over the air supply device.
Furthermore, an air supply device paved on the ground is paved along the direction of the cable, and a device for sucking the polluted air is fixed on the top surface of the cable interlayer right above the air supply device.
Further, air supply arrangement is the supply air duct, and the supply air duct sets up the venthole to empty direction, and the contaminated air device of suction is the exhaust duct, and the exhaust duct sets up the aspirating hole to empty direction.
Furthermore, a positive pressure device is arranged at an outdoor air inlet of the air supply pipeline, a negative pressure device is arranged at an outdoor air outlet of the air exhaust pipeline, and a harmful gas monitoring device is arranged in the cable interlayer.
Furthermore, a pressure regulating pipe is arranged in the air supply pipeline, and the pressure regulating pipe is used for double-side air inlet.
Further, set up pressure regulating pipe in the supply-air duct, pressure regulating pipe is the toper, and the toper is the air inlet to the toper pipe that becomes thick gradually apart from the air inlet farthest end, and pressure regulating pipe sets up the air-out groove by air inlet to apart from the air inlet farthest end, and the air-out groove is by air inlet to apart from the air inlet farthest end with wide, length crescent, and is the biggest to the air inlet farthest end.
Furthermore, the conical tube is manufactured by winding and welding.
Further, the winding and supporting method of the conical tube comprises the following steps:
(1) determining the corresponding taper of each section of pressure regulating pipe from the air inlet to the innermost end of the cable interlayer according to a drawing, and manufacturing a tapered pipe winding mould in sections;
(2) and winding the steel belt on the die, and welding the steel belt after winding to form the conical pressure regulating pipe.
Compared with the prior art, the utility model discloses can realize tiny, the air exchange in remote corner in the cable intermediate layer.
Drawings
Fig. 1 is a schematic top view structure of the present invention;
FIG. 2 is an enlarged view and a front view of portion A of FIG. 1;
fig. 3 is a schematic structural view of the junction between the cable interlayer and the outdoor space;
fig. 4 is a sectional view of the air supply duct according to one embodiment of the present invention.
Wherein, 1, a polluted air suction device; 11. an air extraction duct; 12. an air exhaust hole; 13. a negative pressure device; 2. an air supply device; 21. an air supply duct; 22. an air outlet; 23. a positive pressure device; 24. a pressure regulating pipe; 241. an air outlet groove; 3. a fixing device; 4. harmful gas monitoring devices.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for the convenience of description and simplicity of description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.
Example 1: as shown in the attached figures 1-4, the blowdown air structure of the cable interlayer comprises the cable interlayer, an air supply device 2 is paved on the ground of the cable interlayer, and a polluted air suction device 1 is fixed on the top surface of the cable interlayer.
The air supply from the lower part and the air outlet from the upper part can continuously change the air in the cable interlayer to make the air fresh and the harmful gas discharged, and the air sucking and polluting device 1 and the air supply device 2 are respectively positioned above and below, so that the air in and out can not interfere with each other.
Example 2: in this embodiment, as shown in fig. 1, the air supply device 2 laid on the ground is laid along the included angle between the ground and the wall, and the device 1 for sucking the polluted air is fixed on the top surface of the cable interlayer over the air supply device 2.
Laying along the included angle of the ground and the wall can ensure that the polluted air suction device 1 and the air supply device 2 can be laid to all tiny and remote dead angles, and ensure that all places in the cable interlayer can discharge air.
Example 3: in this embodiment, as a further limitation to embodiment 1, the ground-laid air supply device 2 is laid along the cable direction, and the polluted air suction device 1 is fixed on the top surface of the cable interlayer just above the air supply device 1.
Because harmful gas is most easily generated near the cable, air pollution discharge can be reasonably carried out in the cable interlayer when the cable is laid along the cable.
Example 4: in this embodiment, the air supply device 2 is further limited to embodiment 2 or 3, the air supply duct 21 is an air supply duct 21, the air supply duct 21 is provided with an air outlet 22 in the air-out direction, the polluted air suction device 1 is an air suction duct 11, the air suction duct 11 is provided with an air suction hole 12 in the air-out direction, and the air supply duct 21 and the air suction duct 11 are both fixed on a wall, a ground or a ceiling through the fixing device 3.
The "open direction" refers to a direction in which there is no shielding at the side of the duct, for example, when the air supply duct 21 is disposed at the corner, the bottom and one side of the air supply duct 21 are shielded by the ground and the wall, and the portion that is not shielded is provided with the air outlet hole 22.
Example 5: in this embodiment, the embodiment 4 is further limited, a positive pressure device 23 is disposed at an outdoor air inlet of the air supply duct 21, a negative pressure device 13 is disposed at an outdoor air outlet of the air exhaust duct 11, and a harmful gas monitoring device 4 is disposed in the cable interlayer.
The harmful gas monitoring device 4 is referred to a monitoring system provided by application number 202110388873.4 "a cable interlayer visual monitoring system of an urban rail transit substation", can monitor the temperature of the cable in the cable interlayer, the intrusion of foreign matters, the ambient temperature, the smoke, the light mutation, the SF6 gas and the like, carry out inspection and fault alarm, can monitor the harmful gas in the cable interlayer through the system, when the concentration of the harmful gas exceeds a preset dangerous threshold value, the positive pressure device 23 and the negative pressure device 13 are started to discharge air, the starting mode can be manual starting after receiving the alarm of the monitoring system, and can also be automatic control, the automatic control mode belongs to the mature prior art, not repeated here, the harmful gas monitoring device 4 can be set up in sections according to the actual conditions in the cable interlayer, and also can be set up only in tiny, remote dead corners.
Example 6: in this embodiment, the embodiment 4 is further limited, a pressure regulating pipe 24 is provided in the air blowing duct 21, and the pressure regulating pipe 24 is a double-side air intake.
The air can be fed from both sides simultaneously, the efficiency is improved, and the fed air can be gradually diffused at each air outlet 22 on the air supply pipeline 21.
Example 7: in this embodiment, as shown in fig. 4, a pressure regulating pipe 24 is disposed in the air supply duct 21, the pressure regulating pipe 24 is tapered, the taper is a tapered pipe that becomes thicker from the air inlet to the farthest end from the air inlet, the pressure regulating pipe 24 is provided with an air outlet groove 241 from the air inlet to the farthest end from the air inlet, the air outlet groove 241 is as wide as and gradually increases in length from the air inlet to the farthest end from the air inlet, the farthest end to the air inlet is the largest, and the position of the air outlet groove 241 corresponds to the position of the air outlet 22 of the air supply duct 21 and is also disposed in the air-facing direction.
The tapered pressure regulating pipe 24 is provided only in the straight air supply duct 21, and the pressure regulating pipe 24 in the connecting elbow between two straight air supply ducts 21 is an elbow without taper.
In fig. 4, the taper change of the pressure regulating pipe 24 and the length change of the air outlet groove 241 are large, and the structure is only shown schematically.
The structure of the pressure regulating pipe 24 is advantageous in that the pressure of the air supplied by the positive pressure device 23 is gradually reduced along with the transmission, and the structure can ensure the pressure equalization between the pressure regulating pipe 24 and the air supply duct 21 as much as possible, and the air discharged from the air outlet 22 of each air supply duct 21 is approximately the same.
Example 8: this example is a further limitation of example 7, wherein the tapered tube is made by a wrap weld.
Example 9: this embodiment is further limited to embodiment 8, and the winding and supporting method of the tapered tube in embodiment 8 includes the following steps:
(1) determining the corresponding taper of each section of the pressure regulating pipe 24 from the air inlet to the innermost end of the cable interlayer according to a drawing, and manufacturing a tapered pipe winding mould in sections;
(2) the steel strip is wound around a die and welded after winding to form the tapered pressure regulating pipe 24.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the general inventive concept, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.
Claims (8)
1. A blowdown air structure of cable intermediate layer, includes the cable intermediate layer, its characterized in that: an air supply device is laid on the ground of the cable interlayer, and a device for sucking polluted air is fixed on the top surface of the cable interlayer.
2. A blowdown air structure of a cable interlayer as claimed in claim 1, wherein: the air supply device laid on the ground is laid along an included angle between the ground and the wall, and the polluted air suction device is fixed on the top surface of the cable interlayer over the air supply device.
3. A blowdown air structure of a cable interlayer as claimed in claim 1, wherein: the air supply device laid on the ground is laid along the direction of the cable, and the polluted air suction device is fixed on the top surface of the cable interlayer right above the air supply device.
4. A blowdown air structure of a cable interlayer according to any one of claims 2 or 3, wherein: the air supply device is an air supply pipeline, air outlet holes are formed in the opposite air direction of the air supply pipeline, the polluted air suction device is an air suction pipeline, and air suction holes are formed in the opposite air direction of the air suction pipeline.
5. A blowdown air structure of a cable interlayer as claimed in claim 4, wherein: a positive pressure device is arranged at an outdoor air inlet of the air supply pipeline, a negative pressure device is arranged at an outdoor air outlet of the air exhaust pipeline, and a harmful gas monitoring device is arranged in a cable interlayer.
6. A blowdown air structure of a cable interlayer as claimed in claim 4, wherein: and a pressure regulating pipe is arranged in the air supply pipeline and is used for double-side air inlet.
7. A blowdown air structure of a cable interlayer as claimed in claim 4, wherein: set up pressure regulating pipe in the supply air duct, pressure regulating pipe is the toper, and the toper is the air inlet to the toper pipe that becomes thick gradually apart from the air inlet farthest end, and pressure regulating pipe sets up the air-out groove by air inlet to apart from the air inlet farthest end, and the air-out groove is by the air inlet to with wide apart from the air inlet farthest end, length increase gradually, and is the biggest to the air inlet farthest end.
8. A blowdown air structure of a cable interlayer as claimed in claim 7, wherein: the conical tube is manufactured by winding and welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122683549.3U CN216436683U (en) | 2021-11-04 | 2021-11-04 | Air pollution discharge structure of cable interlayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122683549.3U CN216436683U (en) | 2021-11-04 | 2021-11-04 | Air pollution discharge structure of cable interlayer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216436683U true CN216436683U (en) | 2022-05-03 |
Family
ID=81335452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122683549.3U Active CN216436683U (en) | 2021-11-04 | 2021-11-04 | Air pollution discharge structure of cable interlayer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216436683U (en) |
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2021
- 2021-11-04 CN CN202122683549.3U patent/CN216436683U/en active Active
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