CN105977851A - Mine-purpose explosion-proof and intrinsically safe mobile substation - Google Patents
Mine-purpose explosion-proof and intrinsically safe mobile substation Download PDFInfo
- Publication number
- CN105977851A CN105977851A CN201610525821.6A CN201610525821A CN105977851A CN 105977851 A CN105977851 A CN 105977851A CN 201610525821 A CN201610525821 A CN 201610525821A CN 105977851 A CN105977851 A CN 105977851A
- Authority
- CN
- China
- Prior art keywords
- chamber
- explosion
- proof
- low
- high pressure
- Prior art date
- 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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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
Abstract
The invention provides a mine-purpose explosion-proof and intrinsically safe mobile substation. The substation includes a main body. An explosion-proof chamber, a high voltage wire inlet chamber and a low voltage wire outlet chamber are arranged inside the main body. The left side of the main body is provided with a display apparatus. The left side of the high voltage wire inlet chamber is provided with an isolation switch chamber. The bottom part of the main body is provided with a high voltage master control chamber of which the left side is provided with an interlocking wiring chamber. The low voltage wire outlet chamber is externally provided with a low voltage wire leading apparatus. The top end of the main body is provided with a low voltage master control chamber. The devices on two sides are organically combined through the arrangement of the high voltage wire inlet chamber and the low voltage wire outlet chamber, which greatly shortens product volume. The substation allows operation on single side, which completely avoids all kinds of influence. The high voltage wire inlet chamber and the low voltage wire outlet chamber are designed to have separate chambers, which allows no inference and implements integrated control. An isolation switch static contact is designed to be a semi-closed structure, an isolation switch and a rotation main shaft are fixed together, and a voltage sensor and a display terminal are presented, which make it easy for workers to directly observe voltage data within an explosion-proof wall penetrating sleeving.
Description
Technical field
The present invention is a kind of mine flameproof and intrinsic safety type mobile substation, belongs to coal mine equipment field.
Background technology
In prior art, conventional products is the apparatus that dry type becomes transformer station's both sides installation composition, point
High-voltage switch gear and low tension switch (or guard box) combine.Owing to being arranged on equipment both sides so that it is
Execute-in-place is loaded down with trivial details, and there is potential safety hazard, it is necessary to three people's operations carried out above, due to underground coal mine
Space is little, and equipment is big, and security protection difficulty, especially low-voltage control signal pass device by device interior
During body, affected by high temperature, high pressure, higher hamonic wave, electromagnetic interference, easily cause false protection, lead to
The potential safety hazards such as news interruption.
Summary of the invention
The deficiency existed for prior art, it is an object of the present invention to provide a kind of mine flameproof and intrinsic peace
Holotype mobile substation, to solve the problem proposed in above-mentioned background technology, the present invention is easy to use,
Convenient to operate, good stability, reliability is high.
To achieve these goals, the present invention is to realize by the following technical solutions: a kind of mining
Flameproof intrinsically safe mobile substation, including explosion-proof chamber, high pressure wire-incoming chamber, high-voltage connection device,
Low-pressure line-outgoing chamber and low pressure master control chamber, described explosion-proof chamber, high pressure wire-incoming chamber and low-pressure line-outgoing chamber set
Putting the inside in main body, the left side of described main body is provided with display device, a left side for described high pressure wire-incoming chamber
Side is provided with disconnecting switch chamber, and the outside of described high pressure wire-incoming chamber is provided with high-voltage connection device, described
The bottom of main body has high pressure main control chamber, and the left side in described high pressure main control chamber has interlocking wire connection cavity,
The outside in described low-pressure line-outgoing chamber is provided with low-voltage lead device, and the top of described main body is provided with low pressure
Main control chamber.
Further, the inside in described isolation disconnecting switch chamber includes high pressure caller identification device, isolation
Switch movable contact, static contact isolation switch, high-voltage wall bushing and isolation switch, described high pressure comes
Electricity display device is arranged on the inside of explosion-proof cavity, and the left side of described high-voltage wall bushing is provided with isolation
Switch static contact, the outside of described explosion-proof cavity is provided with isolation switch handle, described isolation switch hands
Handle is connected with disconnecting switch moving contact by isolation switch, and it is main that described isolation switch is internally provided with rotation
Axle.
Further, antenna window seat, antenna windows glass are included inside described intrinsic safety communication and interlocking wire connection cavity
Glass, antenna pcb board and antenna window seat pressing plate, described antenna window seat be internally provided with antenna windows
Glass, the rear of described antenna glass is provided with antenna window seat pressing plate, in described antenna window seat pressing plate
Between be provided with antenna pcb board, the lower section of described antenna window seat is provided with explosion-proof cavity, described antenna windows
It is attached by cruciform slot screw between seat and antenna window seat pressing plate.
Further, described high pressure wire-incoming chamber includes wiring copper coin, explosion-proof wall bushing, voltage
Sensor and display terminal, the rear of described wiring copper coin connects explosion-proof wall bushing, described explosion-proof
The both sides of wall bushing are provided with explosion-proof cavity, and the rear inner part of described explosion-proof wall bushing is provided with lotus
Flower contact, the inside of described explosion-proof wall bushing is additionally provided with voltage sensor, described voltage sensor
By wireless information transfer unit and display terminal data cube computation, described wireless information transfer unit is arranged
Inside at display terminal.
Further, described disconnecting switch chamber is internally provided with isolation switch, and described isolation switch is used for
Isolation high pressure.
Further, described low-voltage cable enters in explosion-proof chamber by low-pressure line-outgoing chamber, and low-voltage cable leads to
Cross low-voltage lead device to draw from low-pressure line-outgoing chamber.
Beneficial effects of the present invention: a kind of mine flameproof and intrinsic safety type mobile substation of the present invention,
By arranging high pressure wire-incoming chamber and low-pressure line-outgoing chamber, two side apparatus are organically combined, significantly
Shorten small product size, unilateral operation, avoid various impact, high pressure wire-incoming chamber and low-pressure line-outgoing chamber completely
Divide chamber design, non-interference, centralized Control, static contact isolation switch is designed as semi-enclosed structure,
Isolation switch is fixed together with rotating main shaft, uses the scheme of direct acting synchroswitching, can dynamically detect
High pressure, uses antenna pcb board to receive and the principle of reflection, reaches wireless by wireless communication signal orientation
Information transmission unit；Feature in conjunction with blast resistance construction combines, it is achieved to wireless antenna
Flame proof, voltage sensor and the existence of display terminal, facilitate staff to watch explosion-proof wearing intuitively
Voltage data in wall sleeve.
Accompanying drawing explanation
The detailed description with reference to the following drawings, non-limiting example made by reading, the present invention
Other features, objects and advantages will become more apparent upon:
Fig. 1 is the structural representation of a kind of mine flameproof and intrinsic safety type of present invention mobile substation；
Fig. 2 is the side view of a kind of mine flameproof and intrinsic safety type of present invention mobile substation；
Fig. 3 is one mine flameproof and intrinsic safety type mobile substation of the present invention mesohigh explosiveproof isolation
The front view of the structure of switching device；
Fig. 4 is one mine flameproof and intrinsic safety type mobile substation of the present invention mesohigh explosiveproof isolation
The side view of the structure of switching device；
Fig. 5 is wireless communication antenna in one mine flameproof and intrinsic safety type mobile substation of the present invention
Structural representation；
Fig. 6 is one mine flameproof and intrinsic safety type mobile substation of the present invention mesohigh electrical explosion proof
The structure chart of coal Special wiring；
Fig. 7 is one mine flameproof and intrinsic safety type mobile substation of the present invention mesohigh electrical explosion proof
Coal Special wiring fundamental diagram；
In figure: 1-disconnecting switch chamber, 2-high pressure wire-incoming chamber, 3-high-voltage connection device, 4-low-voltage lead
Device, 5-high pressure main control chamber, 6-are interlocked wire connection cavity, 7-display device, 8-low-pressure line-outgoing chamber, 9-
Low pressure main control chamber, 10-main body, 11-high pressure caller identification device, 12-disconnecting switch moving contact, 13-
Static contact isolation switch, 14-high-voltage wall bushing, 15-isolation switch handle, 18-isolation switch, 19-
Explosion-proof cavity, 21-wiring copper coin, 22-lotus contact, the explosion-proof wall bushing of 23-, 25-voltage sensor
Device, 27-wireless information transfer unit, 28-display terminal, 61-antenna window seat, 63-antenna glass,
65-antenna pcb board, 66-antenna window seat pressing plate, 67-cruciform slot screw.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and effect and be readily apparent from
Solve, below in conjunction with detailed description of the invention, the present invention is expanded on further.
Referring to Fig. 1-Fig. 7, the present invention provides a kind of technical scheme: a kind of mine flameproof and intrinsic is pacified
Holotype mobile substation, including explosion-proof chamber, high pressure wire-incoming chamber 2, high-voltage connection device 3, low-pressure line-outgoing
Chamber 8 and low pressure master control chamber, explosion-proof chamber, high pressure wire-incoming chamber 2 and low-pressure line-outgoing chamber 8 are arranged on master
The inside of body 10, by arranging high pressure wire-incoming chamber 2 and low-pressure line-outgoing chamber 8, by organic for two side apparatus
Combining, be greatly shortened small product size, unilateral operation, avoid various impact completely, height is pressed into
Line chamber 2 and the chamber design of 8 points of low-pressure line-outgoing chamber, non-interference, centralized Control, the left side peace of main body 10
Equipped with display device 7, the left side of high pressure wire-incoming chamber 2 is provided with disconnecting switch chamber 1, high pressure wire-incoming chamber 2
Outside be provided with high-voltage connection device 3, the bottom of main body 10 has high pressure main control chamber 5, high pressure
The left side in main control chamber 5 has interlocking wire connection cavity 6, and the outside in low-pressure line-outgoing chamber 8 is provided with low-voltage lead
Device 4, the top of main body 10 is provided with low pressure main control chamber 9.
The inside in isolation disconnecting switch chamber 1 includes high pressure caller identification device 11, disconnecting switch moving contact
12, static contact isolation switch 13, high-voltage wall bushing 14 and isolation switch 18, high pressure incoming call display
Showing device 11 is arranged on the inside of explosion-proof cavity 19, and the left side of high-voltage wall bushing 14 is provided with isolation
Switch static contact 13, static contact isolation switch 13 is designed as semi-enclosed structure, isolation switch 18 with
Rotation main shaft is fixed together, and uses the scheme of direct acting synchroswitching, can dynamically detect high pressure, explosion-proof
The outside of cavity 19 is provided with isolation switch 18 handle 15, and isolation switch 18 handle 15 is by isolation
Disconnecting link 18 is connected with disconnecting switch moving contact 12, and isolation switch 18 is internally provided with rotation main shaft.
Intrinsic safety communication and interlocking wire connection cavity 6 inside include antenna window seat 61, antenna glass 63, antenna
Pcb board 65 and antenna window seat pressing plate 66, antenna window seat 61 be internally provided with antenna glass
63, the rear of antenna glass 63 is provided with in the middle of antenna window seat pressing plate 66, antenna window seat pressing plate 66
It is provided with antenna pcb board 65, uses antenna pcb board 65 to receive and the principle of reflection, by wireless telecommunications
Signal orientation reaches wireless information transfer unit 27；Feature in conjunction with blast resistance construction is organically combined in one
Rise, it is achieved the flame proof to wireless antenna, the lower section of antenna window seat 61 is provided with explosion-proof cavity 19, antenna
It is attached by cruciform slot screw 67 between window seat 61 and antenna window seat pressing plate 66.
High pressure wire-incoming chamber 2 includes wiring copper coin 21, explosion-proof wall bushing 23, voltage sensor 25
And display terminal 28, the rear of wiring copper coin 21 connects explosion-proof wall bushing 23, explosion-proof set through walls
The both sides of pipe 23 are provided with explosion-proof cavity 19, and the rear inner part of explosion-proof wall bushing 23 is provided with Flos Nelumbinis
Contact 22, the inside of explosion-proof wall bushing 23 is additionally provided with voltage sensor 25, voltage sensor 25
With the existence of display terminal 28, staff is facilitated to watch the electricity in explosion-proof wall bushing 23 intuitively
Pressure data, voltage sensor 25 passes through wireless information transfer unit 27 and display terminal 28 data cube computation,
Wireless information transfer unit 27 is arranged on the inside of display terminal 28.
Disconnecting switch chamber 1 is internally provided with isolation switch 18, and isolation switch 18 is used for isolating high pressure, low
Voltage cable enters in explosion-proof chamber by low-pressure line-outgoing chamber 8, low-voltage cable by low-voltage lead device 4 from
Low-pressure line-outgoing chamber 8 is drawn.
The present invention is checked by detailed description of the invention: when using, first staff, inspection
Looking into whether existing defects, if there is just cannot be carried out if defect employing, now needing notice dimension
The personnel of repairing keep in repair, if there is no can be carried out use, high pressure main control chamber 5 if problem
Can carry out unifying pipe by from low pressure and high voltage control electrical secondary system, communication system, protection system
Reason is analyzed, and is controlled equipment.
Staff can arrange transformer in low pressure main control chamber 9, sensor is sampled, low pressure
Main control chamber 9 will be from low-pressure secondary system, carry out cluster sampling transmission by transformer, sensor
These information are shown by communication system then by display device 7.
By arranging high pressure wire-incoming chamber 2 and low-pressure line-outgoing chamber 8, two side apparatus are organically combined,
It is greatly shortened small product size, unilateral operation, avoids various impact, high pressure wire-incoming chamber 2 and low pressure completely
8 points of chamber designs of wire cavity, non-interference, centralized Control.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described, right
For those skilled in the art, it is clear that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and
And without departing from the spirit or essential characteristics of the present invention, it is possible to real in other specific forms
The existing present invention.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and
And be nonrestrictive, the scope of the present invention is limited by claims rather than described above, because of
This is intended to include at this all changes fallen in the implication of equivalency and scope of claim
In bright.Should not be considered as limiting involved claim by any reference in claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, but the most each
Embodiment only comprises an independent technical scheme, and this narrating mode of description is only is clear
Chu Qijian, those skilled in the art should be using description as an entirety, the technology in each embodiment
Scheme can also form, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that.
Claims (6)
1. a mine flameproof and intrinsic safety type mobile substation, including explosion-proof chamber, high pressure wire-incoming chamber,
High-voltage connection device, low-pressure line-outgoing chamber and low pressure master control chamber, it is characterised in that: described explosion-proof chamber,
High pressure wire-incoming chamber and low-pressure line-outgoing chamber are arranged on the inside of main body, and the left side of described main body is provided with aobvious
Showing device, the left side of described high pressure wire-incoming chamber is provided with disconnecting switch chamber, outside described high pressure wire-incoming chamber
Portion is provided with high-voltage connection device, and the bottom of described main body has high pressure main control chamber, described high pressure master
The left side controlling chamber has interlocking wire connection cavity, and the outside in described low-pressure line-outgoing chamber is provided with low-voltage lead dress
Putting, the top of described main body is provided with low pressure main control chamber.
A kind of mine flameproof and intrinsic safety type mobile substation the most according to claim 1, its
It is characterised by: the inside in described isolation disconnecting switch chamber includes high pressure caller identification device, disconnecting switch
Moving contact, static contact isolation switch, high-voltage wall bushing and isolation switch, described high pressure incoming call display
Showing device is arranged on the inside of explosion-proof cavity, and the left side of described high-voltage wall bushing is provided with disconnecting switch
Static contact, the outside of described explosion-proof cavity is provided with isolation switch handle, and described isolation switch handle leads to
Crossing isolation switch to be connected with disconnecting switch moving contact, described isolation switch is internally provided with rotation main shaft.
A kind of mine flameproof and intrinsic safety type mobile substation the most according to claim 1, institute
State intrinsic safety communication and interlocking wire connection cavity inside include antenna window seat, antenna glass, antenna pcb board,
And antenna window seat pressing plate, it is characterised in that: described antenna window seat be internally provided with antenna glass,
The rear of described antenna glass is provided with in the middle of antenna window seat pressing plate, described antenna window seat pressing plate and arranges
Antenna pcb board, the lower section of described antenna window seat is had to be provided with explosion-proof cavity, described antenna window seat and sky
It is attached by cruciform slot screw between line window seat pressing plate.
A kind of mine flameproof and intrinsic safety type mobile substation the most according to claim 1, its
It is characterised by: described high pressure wire-incoming chamber includes wiring copper coin, explosion-proof wall bushing, voltage sensor
Device and display terminal, the rear of described wiring copper coin connects explosion-proof wall bushing, described explosion-proof through walls
The both sides of sleeve pipe are provided with explosion-proof cavity, and the rear inner part of described explosion-proof wall bushing is provided with Flos Nelumbinis and touches
Head, the inside of described explosion-proof wall bushing is additionally provided with voltage sensor, and described voltage sensor passes through
Wireless information transfer unit and display terminal data cube computation, described wireless information transfer unit is arranged on aobvious
Show the inside of terminal.
A kind of mine flameproof and intrinsic safety type mobile substation the most according to claim 1, its
Being characterised by: described disconnecting switch chamber is internally provided with isolation switch, described isolation switch is used for isolating
High pressure.
A kind of mine flameproof and intrinsic safety type mobile substation the most according to claim 1, its
It is characterised by: described low-voltage cable enters in explosion-proof chamber by low-pressure line-outgoing chamber, and low-voltage cable is by low
Voltage lead wires device is drawn from low-pressure line-outgoing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610525821.6A CN105977851B (en) | 2016-07-06 | 2016-07-06 | A kind of mine flameproof and intrinsic safety type mobile substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610525821.6A CN105977851B (en) | 2016-07-06 | 2016-07-06 | A kind of mine flameproof and intrinsic safety type mobile substation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105977851A true CN105977851A (en) | 2016-09-28 |
| CN105977851B CN105977851B (en) | 2018-02-02 |
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ID=56954040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610525821.6A Active CN105977851B (en) | 2016-07-06 | 2016-07-06 | A kind of mine flameproof and intrinsic safety type mobile substation |
Country Status (1)
| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707894A (en) * | 2020-06-19 | 2020-09-25 | 中国煤炭科工集团太原研究院有限公司 | Mining electric energy quality on-line measuring system |
| CN112864927A (en) * | 2021-02-26 | 2021-05-28 | 陕西秦之基智能科技有限公司 | Mining explosion-proof and intrinsically safe power distribution device and interconnection power distribution device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101304226A (en) * | 2008-03-24 | 2008-11-12 | 苏绵朋 | Armoured flame-proof type flexible starting equipment |
| CN101442250A (en) * | 2007-11-23 | 2009-05-27 | 张永亮 | Combined frequency changer for mining |
| CN201450248U (en) * | 2009-07-27 | 2010-05-05 | 泰安市众诚矿山自动化有限公司 | Mining explosion suppression type high-voltage vacuum power distribution switch |
| CN203481126U (en) * | 2013-09-30 | 2014-03-12 | 电光防爆科技股份有限公司 | Mining explosion-proof and intrinsic safety-type combination vacuum feed switch |
| CN205985896U (en) * | 2016-07-06 | 2017-02-22 | 北京朗威达科技发展有限公司 | Mining explosive -proof and intrinsic safety mobile substation |
-
2016
- 2016-07-06 CN CN201610525821.6A patent/CN105977851B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101442250A (en) * | 2007-11-23 | 2009-05-27 | 张永亮 | Combined frequency changer for mining |
| CN101304226A (en) * | 2008-03-24 | 2008-11-12 | 苏绵朋 | Armoured flame-proof type flexible starting equipment |
| CN201450248U (en) * | 2009-07-27 | 2010-05-05 | 泰安市众诚矿山自动化有限公司 | Mining explosion suppression type high-voltage vacuum power distribution switch |
| CN203481126U (en) * | 2013-09-30 | 2014-03-12 | 电光防爆科技股份有限公司 | Mining explosion-proof and intrinsic safety-type combination vacuum feed switch |
| CN205985896U (en) * | 2016-07-06 | 2017-02-22 | 北京朗威达科技发展有限公司 | Mining explosive -proof and intrinsic safety mobile substation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707894A (en) * | 2020-06-19 | 2020-09-25 | 中国煤炭科工集团太原研究院有限公司 | Mining electric energy quality on-line measuring system |
| CN112864927A (en) * | 2021-02-26 | 2021-05-28 | 陕西秦之基智能科技有限公司 | Mining explosion-proof and intrinsically safe power distribution device and interconnection power distribution device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105977851B (en) | 2018-02-02 |
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