CN106787149A - Using two-way DC control and the circuit of the flame-proof type switch cubicle of protection power supply - Google Patents
Using two-way DC control and the circuit of the flame-proof type switch cubicle of protection power supply Download PDFInfo
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- CN106787149A CN106787149A CN201710047930.6A CN201710047930A CN106787149A CN 106787149 A CN106787149 A CN 106787149A CN 201710047930 A CN201710047930 A CN 201710047930A CN 106787149 A CN106787149 A CN 106787149A
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- flame
- proof type
- switch cubicle
- power supply
- type switch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses the circuit using two-way DC control and the flame-proof type switch cubicle of protection power supply; including being connected with voltage regulating rectifier handover module located at the voltage transformer of flame-proof type inside switch cabinet, voltage regulating rectifier handover module, the flame-proof type direct current power box outside flame-proof type switch cubicle, voltage transformer and flame-proof type direct current power box；Voltage regulating rectifier handover module includes AC input terminal, DC input terminal, DC output terminal, voltage regulation component, rectifier cell, filter element, discharge resistance, switching device, reverse-filling diode and anti-incorrect manipulation deadlock element.The present invention has eradicated underground coal mine flame-proof type switch cubicle and can not use DC control and protection power supply so far, be easily caused the defect that underground coal mine power outage takes place frequently; improve the reliability and convenience of the operation of underground coal mine flame-proof type switch cubicle and maintenance; with anti-incorrect manipulation deadlock function; the powered operation safety of underground coal mine is ensured, intellectuality, the networked levels of underground coal mine electric power system are improve.
Description
Technical field
The power supply technique field of power supply is controlled and protected the present invention relates to underground coal mine flame-proof type switch cubicle, more specifically
Say, more particularly to underground coal mine flame-proof type switch cubicle can automatically switch dc source as control and protect power supply using two-way
Circuit.
Background technology
High-low voltage switch cabinet is widely used in power distribution circuit, is the key equipment of power distribution.Its effect is
The distribution of electric energy and the break-make of power transmission are controlled, and with all kinds of defencive functions.It is widely used in all kinds of ground transformer stations
With underground coal mine power transformation chamber.
So far, the control of the flame-proof type switch cubicle of all underground coal mines and protection power supply are all used and system
The homologous AC power of power supply.Fig. 1 is referred to, its physical circuit mainly includes：Voltage transformer pt, control and protection component
ZKB, wherein, the power supply of the control and protection component ZKB is by voltage transformer pt secondary line in flame-proof type switch cubicle
The exchange AC100V for enclosing output is powered.When power circuit normally has a power failure, control and protection component ZKB dead electricity, by nothing
Method shows, recording equipment information and state；When feeder line fault has a power failure, because flame-proof type switch cubicle does not have independent control to protect
Power supply, control and protection component ZKB dead electricity, it is impossible to search fault message in time, extend underground power off time, are present certain
Potential safety hazard.
At present, the control of underground coal mine flame-proof type switch cubicle and protection power supply are supplied using the AC power of voltage transformer output
The most serious defect of electricity is；When there is short trouble in power supply circuit, connection voltage transformer (PT) on the line
The instantaneous dramatic decrease of AC supply voltage of secondary coil output, cause to control and protect component ZKB working powers dead electricity and
Guarded command cannot be sent, cause faulty line flame-proof type switch cubicle breaker cannot separating brake in time, so as to cause upper level
There is tripping operation of bypassing the immediate leadership in switch or Jing Shang electric substations, and trigger large area blackout, and underground coal mine large-area power-cuts is for colliery
The harm of safe operation be particularly acute.
The issue of planning science and technology department of national security supervision general bureau in 2016《Eliminate and fall behind safety technical equipment catalogue》(2016
First publicity), wherein colliery field Article 9 has just explicitly pointed out the Supply Security of underground coal mine flame-proof type switch cubicle and has asked
Topic, specifies AC power and belongs to backward filtering technique, it is necessary to be transformed in 5 years as the technology of control and protection power supply
Upgrading.For this reason, it is necessary to design it is a kind of can solve above-mentioned technical problem, using the changeable dc source of two-way as flame-proof type
Switch cubicle is controlled and protects the circuit of power supply.
In view of the security of operation, the generation of coal mine downhole safety accident is prevented, using two-way dc source conduct
In the circuit of control and protection power supply, anti-incorrect manipulation deadlock element FW is added, can cut off and locked explosion-isolated type dc source
Case meets the requirement of antiknock device door opening electrical outage in many gas environments of underground coal mine to the output of flame-proof type switch cubicle.
The content of the invention
It is an object of the invention to provide a kind of use two-way DC control and the electricity of the flame-proof type switch cubicle of protection power supply
Road, to solve the technological deficiency in the presence of prior art.
State for convenience, we are straight by what is exported after voltage regulating rectifier for the AC power exported by voltage transformer
Stream power supply is referred to as：Interior confession dc source；For the dc source being input into by flame-proof type direct current power box outside flame-proof type switch cubicle
Referred to as：Outer confession dc source.
In order to achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of circuit of the flame-proof type switch cubicle of use two-way DC control and protection power supply, including switched located at flame-proof type
Voltage transformer, voltage regulating rectifier handover module inside cabinet and the flame-proof type dc source outside flame-proof type switch cubicle
Case, the output end of the voltage transformer and the input of flame-proof type direct current power box are connected with voltage regulating rectifier handover module；
The voltage regulating rectifier handover module includes AC input terminal, DC input terminal, DC output terminal, pressure regulation unit
Part, rectifier cell, filter element, discharge resistance, switching device, protection element, anti-incorrect manipulation deadlock element and the pole of reverse-filling two
Pipe.
AC input terminal and tune that the output end of the secondary coil of voltage transformer passes through voltage regulating rectifier handover module
The input connection of element is pressed, the output end of the voltage regulation component is connected with the ac input end of rectifier cell, the filtering unit
Part and discharge resistance are connected in parallel on the output end of rectifier cell, and the output end of the rectifier cell is also connected with switching device, described
The output end of switching device is connected by DC output terminal with the control in flame-proof type switch cubicle and protection circuit；
Cable entry, wire connection cavity through walls terminal of the flame-proof type direct current power box by flame-proof type switch cubicle, with
The DC input terminal connection of voltage regulating rectifier handover module, the positive pole of outer confession dc source is by reverse-filling diode and switching unit
Part is connected.
Further, the switching device is normally-open normally-close conversion hysteria relay, hereinafter referred to as relay；The rectification unit
The both positive and negative polarity of the output end of part is connected with the positive and negative electrode normally closed contact of relay respectively；The positive pole of the outer confession dc source leads to
Cross reverse-filling diode to be connected with the positive pole normal opened contact of relay, the negative pole of the outer confession dc source is directly negative with relay
One end connection of pole normal opened contact, the common port of relay is used as output end.
Further, two-way DC control and protect power supply not use relay to switch over, the voltage regulating rectifier switches
Positive pole in module in the output of rectifier cell for dc source is connected with the positive pole of the second reverse-filling diode；It is described outer for straight
Stream power supply is connected with the positive pole of the first reverse-filling diode, and the negative pole of two reverse-filling diodes is defeated with direct current after connecting together
Go out the positive pole connection of terminal, the negative pole of two-way dc source directly connect together after connection with DC output terminal negative pole.
Further, the voltage regulation component is transformer, single phase ac solid-state voltage regulator or thyristor regulating depressor.
Further, the voltage regulation component, rectifier cell, filter element, discharge resistance, switching device, anti-misoperation is closed
Locking element and reverse-filling diode etc. can be the element that separate dispersion is installed, or be the module of integral type encapsulation.
Further, the coils from parallel connection of coils of the relay is outside on the both positive and negative polarity of dc source.
Further, the relay is electromagnetic relay, solid-state relay, electronic switch or contactor.
Further, the relay is normally-open normally-close conversion hysteria, open type or closed type.
Compared with prior art, the advantage of the invention is that：
1st, use outer confession (conventional) and interior confession (standby) the two-way dc source of present invention innovation are flame-proof type switch cubicle control
System and protection circuit are powered, and outer confession dc source is straight by the flame-proof type for providing dc source for it located at flame-proof type switch cubicle outside
Stream power supply box is provided, the AC power that interior confession dc source is exported by flame-proof type inside switch cabinet voltage transformer, by pressure regulation
The dc source exported after rectifying and wave-filtering is provided.When outside flame-proof type direct current power box needs interruption maintenance, can be by adjusting
Outer confession dc source is automatically switched to interior confession dc source and powered by repoussage stream handover module.Further, it is also possible to outer confession direct current
Used as stand-by power supply, when interior confession dc source breaks down automatically switch to outer confession direct current powers in a steady stream in power supply source.Two-way
Dc source can be commonly used or stand-by power supply according to the requirement unrestricted choice of user.
2nd, it is of the invention that outer control and locking for dc source is realized by anti-incorrect manipulation deadlock element, when unlatching flame-proof type
During switch cabinet equipment chamber door, the output of flame-proof type direct current power box is cut off, it is ensured that the safety during Maintenance and Repair of underground, substantially reduce
The occurrence probability of security incident.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is in the prior art using exchange control and the schematic block circuit diagram of the flame-proof type switch cubicle of protection power supply.
Fig. 2 is the principle frame of the circuit of the flame-proof type switch cubicle of use two-way DC control of the present invention and protection power supply
Figure.
Fig. 3 is one kind electricity of the circuit of the flame-proof type switch cubicle of use two-way DC control of the present invention and protection power supply
Road schematic diagram.
Fig. 4 is the another kind of the circuit of the flame-proof type switch cubicle of use two-way DC control of the present invention and protection power supply
Circuit theory diagrams.
Specific embodiment
The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
Embodiment one
Refering to shown in Fig. 2, the present embodiment provides the flame-proof type switch cubicle of a kind of use two-way DC control and protection power supply
The circuit of GK, including voltage transformer pt, voltage regulating rectifier handover module TZQ, Yi Jishe inside flame-proof type switch cubicle GK
Flame-proof type direct current power box DXJL outside flame-proof type switch cubicle GK, the voltage transformer pt and flame-proof type direct current power box
DXJL is connected with voltage regulating rectifier handover module TZQ.
Refering to shown in Fig. 3, the voltage regulating rectifier handover module TQZ includes AC input terminal (L1, L2), direct-flow input end
Sub (IN+, IN-), DC output terminal (OUT+, OUT-), voltage regulation component TY, rectifier cell D, filter element C, discharge resistance
FR, switching device K, anti-incorrect manipulation deadlock element FW, reverse-filling diode D1, D2, protection element FU1；
The voltage transformer pt secondary coil output end by the AC input terminal of voltage regulating rectifier handover module (L1,
L2) input with voltage regulation component TY is connected, and the output end of the voltage regulation component TY connects with the ac input end of rectifier cell D
Connect, the both positive and negative polarity output end of the rectifier cell D is parallel with filter element C and discharge resistance FR, meanwhile, the switching device K
3 pin and 4 pin be connected to the both positive and negative polarity output end of rectifier cell D, the output end 5 of the switching device K, 6 pin are (public
End) connection DC output terminal, and be connected with control and protection circuit by DC output terminal.
The flame-proof type direct current power box DXJL passes through wearing in the cable entry of flame-proof type switch cubicle GK, wire connection cavity
Outer confession dc source is introduced wall terminal the DC input terminal (IN+, IN-) of voltage regulating rectifier handover module, outer confession dc source
Positive pole be connected with the positive pole of reverse-filling diode D1, the negative pole of the reverse-filling diode D1 connects with 1 pin of switching device K
Connect.Direct and switching device K the 2 pin connection of the negative pole of outer confession dc source.The coils from parallel connection of coils of switching device K supplies direct current outside
On the both positive and negative polarity in source.
Refering to shown in Fig. 3, the switching device K is relay, and the filter element C, discharge resistance FR are connected in parallel on rectification
The output end of element D, 3 pin and 4 pin of relay K are connected with the positive and negative electrode output end of rectifier cell D respectively；It is described outer for straight
The positive pole for flowing power supply is connected by reverse-filling diode D1 with 1 pin of relay K.The negative pole of outer confession dc source is directly and 2 pin
Connection.
The voltage regulation component TY is transformer, single phase ac solid-state voltage regulator or thyristor regulating depressor etc..
The voltage regulation component TY, rectifier cell D, filter element C, discharge resistance FR, switching device, anti-incorrect manipulation deadlock unit
Part FW and reverse-filling diode D1 etc. both can be the element that separate dispersion is installed, it is also possible to be processed as an overall package
Module, the package module can simultaneously realize the functions such as flame proof, pressure regulation, rectification, filtering, switching, locking.
The automatic switchover of two-way DC control and protection power supply is the contact action by relay K in the present embodiment, is connect
Point is changed to realize.When outer confession DC supply input is normal, the coil of relay K is powered, contact action, and normally closed contact turns
Be changed to normal opened contact, the output loop of interior confession dc source disconnects, outer confession dc source by the normal opened contact after conversion (now
Be closure) output to DC output terminal be flame-proof type switch cubicle in control and protective loop power.
The effect of the reverse-filling diode D1 is that the dc source for preventing rectifier cell D from exporting is counter is poured into flame-proof type direct current
In power supply box DXJL.
In normal operation, outer confession dc source is the control and protection circuit inside flame-proof type switch cubicle GK to the present embodiment
Power supply.Outer confession dc source accesses voltage regulating rectifier and cuts by the DC input terminal (IN+, IN-) on voltage regulating rectifier handover module
Mold changing block, then 1 pin and 2 pin that the normal opened contact of relay K is input to by reverse-filling diode D1.Due to the line of relay K
Circle is powered, and 1-5 pin and 2-6 the pin closure of relay K, outer confession dc source are exported by the 1-5 pin and 2-6 pin through relay K
To DC output terminal (OUT+, OUT-).Due to the powered adhesive of the coil of relay K, the 3-5 pin and 4-6 pin of relay are instantaneous
It is changed into normally open, interior confession dc source disconnects, used as standby.
When flame-proof type direct current power box DXJL needs interruption maintenance or output voltage to be greatly lowered, the line of relay K
Circle dead electricity, the contact action of relay K is returned, and relay 3-5 pin and 4-6 pin closure are turned on, and control and protection power supply are switched to
Powered by interior confession dc source.
The outer confession dc source sequentially passes through cable entry (being commonly called as horn mouth), the wiring of flame-proof type switch cubicle GK
Chamber explosion-insulating through wall terminal, direct-flow input end (IN+, IN-) access voltage regulating rectifier handover module TZQ, the positive pole of outer confession dc source
Positive pole with reverse-filling diode D1 is connected, and 1 pin of relay K is connected to by the negative pole of D1, outer confession dc source it is negative
Pole is directly connected to 2 pin of relay K.
Preferably, the relay K is electromagnetic relay, solid-state relay, electronic switch or contactor.
The relay K is normally-open normally-close conversion hysteria, open type or closed type.
In the present embodiment, interior confession dc source and outer confession dc source using with a pair of DC output terminals (OUT+,
OUT- control and protection circuit are arrived in) output.
In the present embodiment, the effect of filter element C is：Alternating component in filtering dc source, improves voltage regulating rectifier
The quality of the dc source of handover module TZQ outputs；Resistance FR is discharge resistance, and its effect is：Before maintenance personal overhauls
The electric energy of electric capacity savings is discharged, prevents maintenance personal from getting an electric shock, while electric capacity electric discharge during maintenance can be avoided to produce spark, it is ensured that
Underground coal mine electricity consumption safety.
In the present embodiment, anti-incorrect manipulation deadlock element FW is magnetic switch or optoelectronic switch.When flame-proof type switch cubicle sets
Standby chamber explosion proof door is closed, and when magnetic switch and optoelectronic switch are able to detect that induction source, magnetic switch and optoelectronic switch inside are often
Junction closure is opened, the coil of output loop contactor JC is powered in flame-proof type direct current power box and adhesive, outer confession dc source
Current supply circuit is turned on；When flame-proof type switch cabinet equipment chamber explosion proof door is opened, due to magnetic switch or the induction source of optoelectronic switch
Induction range is withdrawn from, magnetic switch and optoelectronic switch interior contacts disconnect, output loop contactor in flame-proof type direct current power box
The coil losing electricity of JC simultaneously disconnects, and the current supply circuit of outer confession dc source stops output, thus realizes opening flame-proof type switch cubicle
During equipment cavity explosion proof door, controls of the anti-incorrect manipulation deadlock element FW for outer confession dc source and blocking function.
Embodiment two
It is no in the present embodiment to use switching device relay K refering to shown in Fig. 4, but directly by interior for supplying two with outer
Road dc source is connected in parallel, and the principle of low potential and the reverse cut-off work(of diode are flowed to by high potential according to DC current
The uninterrupted switching of two-way dc source can be realized.
The both positive and negative polarity output end of rectifier cell D described in the present embodiment is equally parallel with filter element C, discharge resistance FR,
Difference is that rectifier cell D output ends do not have a switching device K, the positive pole of rectifier cell output end directly with the pole of reverse-filling two
The positive pole connection of pipe D2, the negative pole of reverse-filling diode D2 is connected with the negative pole of reverse-filling diode D1；The flame-proof type is straight
The positive pole of the positive pole connection reverse-filling diode D1 of the outer confession dc source of stream power supply box DXJL inputs, therefore, two-way direct current
The positive pole in source is connected in parallel by after reverse-filling diode D1, D2, interior direct simultaneously for the negative pole with outer confession two-way dc source
It is linked togather.Dc source after parallel connection is that control and protective loop are powered by DC output terminal (OUT+, OUT-).
The automatic switchover of two-way dc source is by two reverse-fillings in voltage regulating rectifier handover module TZQ in the present embodiment
The reverse cutoff function of diode D1 and D2, and by high potential flow to the principle of low potential according to DC current to realize.
In actual implementation, using interior confession dc source as stand-by power supply, the supply voltage for outputting it is adjusted to than outer confession dc source
Slightly lower, so, when outer confession dc source is normal, because its voltage is higher, control and protective loop use the road dc source.
Outer confession dc source is due to the stop of reverse-filling diode, it is impossible to by reverse-filling diode D2.When outer confession dc source has a power failure
When maintenance or voltage reduction, then internal dc source is automatically converted to control and protective loop power supply free of discontinuities.Due to anti-down
The reverse cut-off effect of diode D1 is filled, interior confession dc source cannot be flowed into inside outside flame-proof type direct current power box DXJL.
Because there is the inflammable and explosive hazardous gas such as gas in underground coal mine, once electricity is produced in electricity supply and use equipment operating maintenance
Spark will trigger gas explosion accident, be this《National safety regulations in coal mine》Regulation, all underground electricity supply and use equipments must be opened
Door power-off maintenance.The flame proof for being designed to realize outside flame-proof type switch cubicle provide control and protection power supply for it of the invention
When type direct current power box needs power-off maintenance, can also automatically switch to by supplying (standby) direct current in flame-proof type inside switch cabinet
Source powers, it is ensured that the continuous reliability service of flame-proof type switch cubicle.
Compared to existing technology, patent flame-proof type switch cubicle of the present invention is using the changeable dc source of two-way is as control and protects
The technology of power supply is protected, current flame-proof type switch cubicle is thoroughly solved using exchange control and is protected a variety of drawbacks of power supply and lack
Fall into, while by the automatic switchover of two-way dc source, solving necessary door opening electrical outage when underground coal mine electrical equipment is repaired
Safety code requirement, i.e. can not stop flame proof again when flame-proof type switch cubicle outside flame-proof type direct current power box needs interruption maintenance
When the control of type switch cubicle and protection power supply, can be switched in flame-proof type inside switch cabinet and be powered for dc source, it is ensured that
The safe and reliable operation of underground coal mine flame-proof type switch cubicle, so as to substantially increase underground coal mine power transformation operation reliability and
Security.
Simultaneously, it is contemplated that the importance of coal mine downhole safety electricity consumption, anti-incorrect manipulation deadlock unit is also devised with this circuit arrangement
Part FW, when flame-proof type switch cubicle need open explosion proof door overhaul when, anti-incorrect manipulation deadlock element can automatically cut off with locking every
Power supply from quick-fried type direct current power box to flame-proof type switch cubicle.
Although being described in conjunction with the accompanying embodiments of the present invention, patent owner can be in appended claims
Within the scope of make various deformations or amendments, as long as no more than the protection domain described by claim of the invention, all should
Within protection scope of the present invention.
Claims (9)
1. using two-way DC control and the circuit of the flame-proof type switch cubicle of protection power supply, it is characterised in that：Including located at flame proof
The voltage transformer of type inside switch cabinet, voltage regulating rectifier handover module and the flame-proof type outside flame-proof type switch cubicle are straight
Stream power supply box, the voltage transformer and flame-proof type direct current power box are connected with voltage regulating rectifier handover module；The pressure regulation is whole
Stream handover module includes AC input terminal, DC input terminal, DC output terminal, voltage regulation component, rectifier cell, filtering unit
Part, discharge resistance, switching device, anti-incorrect manipulation deadlock element and reverse-filling diode；The secondary coil of voltage transformer is defeated
Go out to terminate and be connected with the input of voltage regulation component into the AC input terminal of voltage regulating rectifier handover module, the voltage regulation component it is defeated
Go out end to be connected with the ac input end of rectifier cell, the DC output end of the rectifier cell is parallel with filter element and electric discharge electricity
Resistance, and be connected with switching device, the output end of the switching device is by the control in DC output terminal and flame-proof type switch cubicle
System and protection circuit connection；The positive pole of the flame-proof type dc source is by DC input terminal and the positive pole of reverse-filling diode
Connection, the negative pole of the reverse-filling diode is connected with switching device；The anti-incorrect manipulation deadlock element is used to cut off and locking
Flame-proof type direct current power box is exported to the power supply of flame-proof type switch cubicle.
2. the circuit of the flame-proof type switch cubicle of use two-way DC control according to claim 1 and protection power supply, it is special
Levy and be：The switching device is normally-open normally-close conversion hysteria relay, and the both positive and negative polarity output end of the rectifier cell is parallel with filter
Ripple element, discharge resistance, and be connected with two normally closed contacts of normally-open normally-close conversion hysteria relay respectively；The flame-proof type direct current
The positive pole of power supply box is connected by reverse-filling diode with the normal opened contact of normally-open normally-close conversion hysteria relay；The flame-proof type is straight
Normal opened contact of the negative pole of power supply box directly with normally-open normally-close conversion hysteria relay is flowed to be connected.
3. the circuit of the flame-proof type switch cubicle of use two-way DC control according to claim 1 and protection power supply, it is special
Levy and be：The rectifier cell output end is parallel with filter element, discharge resistance, and the positive pole of rectifier cell output is anti-down with second
Fill the positive pole connection of diode；The positive pole of the flame-proof type direct current power box input connects the positive pole of the first reverse-filling diode,
The negative pole of two reverse-filling diodes is connected to the positive pole of DC output terminal, the rectifier cell output end after being connected in parallel
Negative pole be directly parallel in the negative pole of flame-proof type direct current power box together be connected to the negative pole of DC output terminal afterwards.
4. the use two-way DC control according to Claims 2 or 3 and protection power supply flame-proof type switch cubicle circuit, its
It is characterised by：The voltage regulation component is transformer, single phase ac solid-state voltage regulator or thyristor regulating depressor.
5. the circuit of the flame-proof type switch cubicle of use two-way DC control according to claim 1 and protection power supply, it is special
Levy and be：The voltage regulation component, rectifier cell, filter element, discharge resistance, switching device, anti-incorrect manipulation deadlock element and anti-
It can be the element or the module for integral type encapsulation that separate dispersion is installed to pour in down a chimney diode.
6. the circuit of the flame-proof type switch cubicle of use two-way DC control according to claim 1 and protection power supply, it is special
Levy and be：The dc source of flame-proof type direct current power box output be sequentially pass through flame-proof type switch cubicle cable entry,
Flame-proof type switch cubicle wire connection cavity, flame-proof type terminal through walls are input to the direct current of flame-proof type inside switch cabinet voltage regulating rectifier handover module
Input.
7. the circuit of the flame-proof type switch cubicle of use two-way DC control according to claim 2 and protection power supply, it is special
Levy and be：The normally-open normally-close conversion hysteria relay is electromagnetic relay, solid-state relay, electronic switch or contactor.
8. the circuit of the flame-proof type switch cubicle of use two-way DC control according to claim 2 and protection power supply, it is special
Levy and be：The normally-open normally-close conversion hysteria relay is normally-open normally-close conversion hysteria, open type or closed type.
9. the circuit of the flame-proof type switch cubicle of use two-way DC control according to claim 1 and protection power supply, it is special
Levy and be：The anti-incorrect manipulation deadlock element is magnetic switch or light-operated switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710047930.6A CN106787149A (en) | 2017-01-21 | 2017-01-21 | Using two-way DC control and the circuit of the flame-proof type switch cubicle of protection power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710047930.6A CN106787149A (en) | 2017-01-21 | 2017-01-21 | Using two-way DC control and the circuit of the flame-proof type switch cubicle of protection power supply |
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| CN106787149A true CN106787149A (en) | 2017-05-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900101A (en) * | 2018-09-03 | 2018-11-27 | 国网湖北省电力有限公司宜昌供电公司 | A kind of switchgear cowling panel of included defencive function |
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Effective date of registration: 20200818 Address after: 430040 Shenzhou logistics park, No.1, Taichung Road, Gaoqiao Economic Development Zone, Dongxihu District, Wuhan, Hubei Applicant after: WUHAN RUIY POWER EQUIPMENT Co.,Ltd. Address before: 430040 Shenzhou logistics park, No.1, Taichung Road, Gaoqiao Economic Development Zone, Dongxihu District, Wuhan, Hubei Applicant before: Cheng Hanping |