CN209545240U - A kind of flame-proof type multipurpose power source switching device - Google Patents
A kind of flame-proof type multipurpose power source switching device Download PDFInfo
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- CN209545240U CN209545240U CN201920446955.8U CN201920446955U CN209545240U CN 209545240 U CN209545240 U CN 209545240U CN 201920446955 U CN201920446955 U CN 201920446955U CN 209545240 U CN209545240 U CN 209545240U
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- power supply
- flame
- power source
- proof type
- switching device
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Abstract
The utility model discloses a kind of flame-proof type multipurpose power source switching devices, including Flameproof shell and the circuit board being arranged in inside Flameproof shell, power supply switch circuit is provided on circuit board, power supply switch circuit includes relay K, fuse F and thermistor R, when for power supply switching, two-way exchange or two-way DC power supply can be inputted simultaneously, export AC or DC power all the way.AC or DC sources all the way can be inputted when being used for power distribution, export three tunnel AC or DC sourcess.Power supply switching and power distribution function cannot be realized simultaneously, this flame-proof type multipurpose power source switching device is able to solve the problem of underground coal mine low pressure main power supply and backup power source automatic switchover, solves the drawbacks of underground coal mine key equipment can only be by power supply power supply all the way, it can satisfy the needs built in wisdom mine, the reliability of underground coal mine key equipment power supply is improved, ensures Safety of Coal Mine Production.
Description
Technical field
The utility model relates to power supply technique fields, and more specifically, in particular to a kind of flame-proof type multipurpose power source is cut
Changing device.
Background technique
The reliability of underground coal mine power supply, is related to the safety in production and economic benefit of entire coal mine.With national wisdom
The requirement for changing mine construction proposes, as highly gassy mine wants power supply system, monitoring " dual power supply, double substations "
Ask, design and develop it is a kind of exclusively for underground low voltage power system, monitoring and controlling system provide flame-proof type dual power supply switching
Device becomes the task of top priority.
So far, all underground coal mine low-tension supplies are provided by underground coal mine flame-proof type illumination complex protection device.It should
Device can only output multi-channel and homologous AC power source, once underground have a power failure, can not just continue provide key equipment required for
Backup power source.
Utility model content
The purpose of this utility model is to provide a kind of flame-proof type multipurpose power source switching devices.
In order to achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of flame-proof type multipurpose power source switching device, including Flameproof shell and the electricity being arranged in inside Flameproof shell
Road plate is provided with power supply switch circuit on the circuit board, and the power supply switch circuit includes relay K, fuse F and temperature-sensitive
Resistance R, the relay K, fuse F and thermistor R are fixedly mounted on circuit boards, and described circuit board one end is equipped with the
One input terminal L1, the second input terminal L2, third input terminal N1 and the 4th input terminal N2, the circuit board other end are equipped with
First lead-out terminal L3 and second output terminal sub- N3, the first lead-out terminal L3 are connect with the one end fuse F, and described second is defeated
Terminal N3 is connect with the one end thermistor R out, and the relay K has two groups of contacts, the first input end L1, second defeated
Enter terminal L2 to connect with one group of contact one end, which connect with the fuse F other end, the third input terminal
Sub- N1 and the 4th input terminal N2 are connect with another group of contact one end, and the contact other end and the thermistor R other end connect
It connects.
Further, the Flameproof shell outer surface is uniformly provided with multiple groups and draws port.
Further, the Flameproof shell is steel construction.
Further, the circuit board surface is coated with three-proofing coating.
Further, the thermistor is the thermistor of negative temperature coefficient.
Compared with the prior art, the advantages of the utility model are: two-way can be inputted simultaneously when for power supply switching
Exchange or two-way DC power supply export AC or DC power all the way.It can input when being used for power distribution and exchange all the way
Or DC power supply, export three tunnel AC or DC sourcess.Power supply switching and power distribution function cannot realize simultaneously, this every
Quick-fried type multipurpose power source switching device is able to solve the problem of underground coal mine low pressure main power supply and backup power source automatic switchover, solution
It has determined underground coal mine key equipment can only be by power supply power supply all the way the drawbacks of, can satisfy the needs built in wisdom mine,
The reliability of underground coal mine key equipment power supply is improved, ensures Safety of Coal Mine Production.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structure chart of flame-proof type multipurpose power source switching device of the utility model.
Specific embodiment
The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear
Define.
As shown in fig.1, the utility model provides a kind of flame-proof type multipurpose power source switching device, including Flameproof shell
1 and the circuit board that is arranged in inside Flameproof shell 1, power supply switch circuit is provided on circuit board, and power supply switch circuit includes
Relay K, fuse F and thermistor R, relay K, fuse F and thermistor R are fixedly mounted on circuit boards, circuit
Plate one end is equipped with first input end L1, the second input terminal L2, third input terminal N1 and the 4th input terminal N2, circuit
The plate other end is equipped with first lead-out terminal L3 and second output terminal sub- N3, and first lead-out terminal L3 is connect with the one end fuse F,
The sub- N3 of second output terminal is connect with the one end thermistor R, and relay K has two groups of contacts, first input end L1, the second input
Terminal L2 is connect with one group of contact one end, which connect with the fuse F other end, third input terminal N1 and the 4th
Input terminal N2 is connect with another group of contact one end, which connect with the thermistor R other end.
In the present embodiment, Flameproof shell outer surface is uniformly provided with multiple groups and draws port 2, for extraneous plant-grid connection electricity
The demand of road plate.
In the present embodiment, Flameproof shell is steel construction.
In the present embodiment, circuit board surface is coated with three-proofing coating, meets the needs used in underground coal mine wet environment.
In the present embodiment, thermistor is the thermistor of negative temperature coefficient, and thermistor instantaneously switches electricity for inhibiting
Stream.
Flame-proof type multipurpose switching device has the function of power supply switching or power distribution two.When for power supply switching,
Two-way exchange or two-way DC power supply can be inputted simultaneously, export AC or DC power all the way.When being used for power distribution
AC or DC sources all the way can be inputted, three tunnel AC or DC sourcess are exported.Power supply switching and power distribution function
It cannot realize simultaneously.AC or DC power accesses connecting terminal through the port on flameproof enclosure by cable all the way, due to connecing
Line terminals can carry out parallel connection by wire jumper on circuit boards, therefore access output cable on the connecting terminal of the other end, i.e.,
Power input three-way power all the way can be achieved to export, complete power distribution.
Working principle: two-way power supply is respectively connected on circuit board by cable through the port 2 on flameproof enclosure first defeated
Enter terminal L1 third input terminal N1 and the second input terminal L2 the 4th input terminal N2, wherein input terminal L1 N1 connect it is standby
With power supply, L2 N2 connects main power supply.As shown in Figure 1, the coil of relay K charges, and relay is normal when main power supply has electricity
Open contact 3-4,5-6 closure, main power supply draw by thermistor R, fuse F, output terminal L3 N3 and output end cable
Enter the output of port 2 to external electric equipment.When main power supply has a power failure, relay K coil blackout, relay normally closed interlock 2-3,
6-7 closure, backup power source by normally closed interlock 2-3,6-7, thermistor R, fuse F and output L3 N3 terminal output.
Although being described in conjunction with the accompanying the embodiments of the present invention, patent owner can want in appended right
Various deformations or amendments are made within the scope of asking, as long as the claim for being no more than the utility model is described to protect model
It encloses, should all be within the protection scope of the utility model.
Claims (5)
1. a kind of flame-proof type multipurpose power source switching device, including Flameproof shell and the circuit being arranged in inside Flameproof shell
Plate, it is characterised in that: power supply switch circuit is provided on the circuit board, the power supply switch circuit includes relay K, fusing
Device F and thermistor R, the relay K, fuse F and thermistor R are fixedly mounted on circuit boards, the circuit board one
It is another that end is equipped with first input end L1, the second input terminal L2, third input terminal N1 and the 4th input terminal N2, circuit board
One end is equipped with first lead-out terminal L3 and second output terminal sub- N3, and the first lead-out terminal L3 is connect with the one end fuse F,
The sub- N3 of second output terminal is connect with the one end thermistor R, and the relay K has two groups of contacts, the first input end
Sub- L1, the second input terminal L2 are connect with one group of contact one end, which connect with the fuse F other end, institute
It states third input terminal N1 and the 4th input terminal N2 is connect with another group of contact one end, the contact other end and temperature-sensitive electricity
Hinder the connection of the R other end.
2. flame-proof type multipurpose power source switching device according to claim 1, it is characterised in that: outside the Flameproof shell
Side surface is uniformly provided with multiple groups and draws port.
3. flame-proof type multipurpose power source switching device according to claim 1, it is characterised in that: the Flameproof shell is
Steel construction.
4. flame-proof type multipurpose power source switching device according to claim 1, it is characterised in that: the circuit board surface spray
It is coated with three-proofing coating.
5. flame-proof type multipurpose power source switching device according to claim 1, it is characterised in that: the thermistor is negative
The thermistor of temperature coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920446955.8U CN209545240U (en) | 2019-04-03 | 2019-04-03 | A kind of flame-proof type multipurpose power source switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920446955.8U CN209545240U (en) | 2019-04-03 | 2019-04-03 | A kind of flame-proof type multipurpose power source switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209545240U true CN209545240U (en) | 2019-10-25 |
Family
ID=68275929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920446955.8U Active CN209545240U (en) | 2019-04-03 | 2019-04-03 | A kind of flame-proof type multipurpose power source switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209545240U (en) |
-
2019
- 2019-04-03 CN CN201920446955.8U patent/CN209545240U/en active Active
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