CN109038479A - Over-pressure safety device - Google Patents
Over-pressure safety device Download PDFInfo
- Publication number
- CN109038479A CN109038479A CN201810967237.5A CN201810967237A CN109038479A CN 109038479 A CN109038479 A CN 109038479A CN 201810967237 A CN201810967237 A CN 201810967237A CN 109038479 A CN109038479 A CN 109038479A
- Authority
- CN
- China
- Prior art keywords
- time relay
- output end
- air switch
- contactor
- separately connected
- 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
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to underload or no-load
- H02H3/13—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to underload or no-load for multiphase applications, e.g. phase interruption
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
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- Keying Circuit Devices (AREA)
Abstract
The present invention is suitable for power supply technical field, provides a kind of over-pressure safety device, including the first air switch, first time relay, second time relay, the third time relay, A.C. contactor and breaker.When there is phenomena such as open circuit, virtual connection in the zero curve in power supply line, phases line voltage in power supply line increases, first air switch trips, A.C. contactor normally-closed contact disconnects, the first output end, second output terminal and the third output end output voltage of A.C. contactor are zero, shunt release power loss in breaker controls circuit breaker trip, and electrical equipment power-off in family prevents the accident of damage electrical equipment.
Description
Technical field
The invention belongs to power supply technical field more particularly to a kind of over-pressure safety devices.
Background technique
Currently in three-phase and four-line low-voltage network, since the factors such as natural, artificial make the zero-line open-circuit of power supply system, zero
Line poor contact, causes supply voltage to increase, load neutral point is caused in three-phase load unbalance to generate offset, and load is light
Voltage is held to increase, the end voltage of load weight reduces, and burns out so as to cause the electrical equipment of user.
In addition, zero line break also makes the protective effect of the electrical equipment forfeiture zero line protection after trip point.Work as zero line break,
And when a certain electrical equipment touches shell electric leakage behind trip point, connecing all electrical appliance enclosures after trip point can all take
It is equivalent to the voltage-to-ground of phase voltage, once these electrical appliance enclosures of human contact, will occur casualty accident of getting an electric shock.Accident
After generation, local power supply department is responsible for repairing or reparation to electric appliance is burnt.In this way, not only causing huge warp to power supply enterprise
Ji loss, and a large amount of human and material resources are spent to solve the dispute with user, while to our good service work also band
Carry out passive situation.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of over-pressure safety device, to solve in the prior art due to zero curve
Problem causes the problem of user power utilization equipment damage, harmful to human safety.
In order to solve the above technical problems, the technical solution used in the present invention is: a kind of over-pressure safety device, including first
Air switch, first time relay, second time relay, the third time relay, A.C. contactor and breaker, A phase
Line, B phase line, C phase line and zero curve are separately connected first input end, the second input terminal, the third input of first air switch
End and the 4th input terminal, the 4th output end of first air switch are separately connected first time relay power end
One end, one end of second time relay power end, the third time relay power end one end exchanged with described
One end of contactor power end, the first output end of first air switch are separately connected the first time relay power
The other end and first input end at end, the second output terminal of first air switch are separately connected second time relay
The other end and first input end of power end, the third output end of first air switch be separately connected the third time after
The other end and first input end at appliances power source end, the first output end of the first time relay, second time after
First output end of the first output end of electric appliance and the third time relay is separately connected the first of the A.C. contactor
Input terminal, the second input terminal and third input terminal, the first output end or second output terminal or third of first air switch
Output end connects the other end at the AC contact electric power end, two terminals connection of shunt release in the breaker
Any two terminals in first output end of A.C. contactor, second output terminal and third output end.
Further, over-pressure safety device further includes three fuses, the A phase line, the B phase line and the C phase line
It is separately connected the input terminal of three fuses, it is first defeated to be separately connected first air switch for the output end of three fuses
Enter end, the second input terminal and third input terminal.
Further, over-pressure safety device further includes three indicator lights, respectively the first indicator light, the second indicator light and
Three indicator lights, first indicator light be separately connected first air switch the 4th output end and breaker A phase line it is defeated
Outlet, second indicator light are separately connected the 4th output end of first air switch and the output end of breaker B phase line,
The third indicator light is separately connected the 4th output end of first air switch and the output end of breaker C phase line.
Further, over-pressure safety device further includes cabinet, first air switch, the first time relay,
Second time relay, the third time relay, the A.C. contactor and the breaker are installed in described
Box house.
Further, the A.C. contactor is CJX1-9 model A.C. contactor.
Further, the first time relay, second time relay and the third time relay are set
Fix time is 3 seconds.
The beneficial effects of adopting the technical scheme are that the present invention passes through design over-pressure safety device, including
First air switch, first time relay, second time relay, the third time relay, A.C. contactor and breaker,
A phase line, B phase line, C phase line and zero curve are separately connected the first input end of the first air switch, the second input terminal, third input terminal
The one end at first time relay power end, second are separately connected with the 4th output end of the 4th input terminal, the first air switch
One end, one end of third time relay power end and one end at AC contact electric power end of time relay power end, the
First output end of one air switch is separately connected the other end and first input end at first time relay power end, and first is empty
The second output terminal of air cock is separately connected the other end and first input end of the second time relay power end, and the first air is opened
The third output end of pass is separately connected the other end and first input end of third time relay power end, first time relay
The first output end, the first output end of second time relay and the first output end of the third time relay be separately connected friendship
Flow first input end, the second input terminal and the third input terminal of contactor, the first output end of the first air switch or second defeated
Outlet or third output end connect the other end at AC contact electric power end, and two terminals of shunt release connect in breaker
Connect any two terminals in the first output end of A.C. contactor, second output terminal and third output end.When in power supply line
Zero curve when there is phenomena such as open circuit, virtual connection, the phases line voltage in power supply line increases, and the first air switch trips, and hands over
It flows contactor normally-closed contact to disconnect, the first output end, second output terminal and the third output end output voltage of A.C. contactor are
Zero, the shunt release power loss in breaker controls circuit breaker trip, and electrical equipment power-off in family prevents damage electrical equipment
Accident.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the circuit connection diagram of over-pressure safety device provided in an embodiment of the present invention.
In figure: 1, the first air switch；2, first time relay；3, second time relay；4, third time relay
Device；5, A.C. contactor；6, breaker.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific
The present invention also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, in case unnecessary details interferes description of the invention.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
As shown in Figure 1, being the circuit connection diagram of over-pressure safety device provided in an embodiment of the present invention, including the first air is opened
Close 1, first time relay 2, second time relay 3, the third time relay 4, A.C. contactor 5 and breaker 6, A phase
Line, B phase line, C phase line and zero curve be separately connected the first input end of the first air switch 1, the second input terminal, third input terminal and
4th output end of the 4th input terminal, the first air switch 1 is separately connected one end of 2 power end of first time relay, second
One end of 3 power end of the time relay, 5 power end of one end and A.C. contactor of 4 power end of the third time relay one end,
First output end of the first air switch 1 is separately connected the other end and first input end of 2 power end of first time relay, the
The second output terminal of one air switch 1 is separately connected the other end and first input end of second time relay, 3 power end, and first
The third output end of air switch 1 is separately connected the other end and first input end of 4 power end of the third time relay, when first
Between the first output end of relay 2, the first output end of second time relay 3 and the third time relay 4 the first output
End is separately connected the first input end, the second input terminal and third input terminal of A.C. contactor 5, and the first of the first air switch 1
Output end or second output terminal or third output end connect the other end of 5 power end of A.C. contactor, shunted exciter tripping in breaker 6
Any two that two terminals of device connect in 5 first output end of A.C. contactor, second output terminal and third output end connect
Line end.
When phenomena such as open circuit, virtual connection occurs in the zero curve in power supply line, the phases line voltage in power supply line is increased, and first
Air switch 1 trips, and 5 normally-closed contact of A.C. contactor disconnects, the first output end of A.C. contactor 5, second output terminal
It is zero with third output end output voltage, the shunt release power loss control breaker 6 in breaker 6 trips, family electrical equipment
Power-off prevents the accident of damage electrical equipment.
After the completion of to the system zero-line failure processing in circuit, close a floodgate to breaker 6 and the first air switch 1, the time
Relay obtains electric, the first output end and first input end of the time relay conducting, the first output end of A.C. contactor 5, the
Two output ends and the electrification of third output end, the shunt release of breaker 6 obtains electric, and breaker 6 no longer trips, and completes to close a floodgate with this
Movement.
In one embodiment of the present of invention, first time relay 2, second time relay 3 and the third time relay 4
Setting time is 3 seconds, when closing a floodgate, the input terminal and output end meeting Delayed conducting of three time relays, in the process, the
Whether one air switch 1 can detect the voltage in route normal, if route there are still problem, in time relay output end and
It trips between input terminal conducting, time relay power-off, breaker 6 can not close a floodgate, if there is no problem for route,
After delay in 3 seconds, the input terminal and output end of the time relay are connected, and the output end of A.C. contactor 5 has voltage, breaker 6
Shunt release obtains electric, and breaker 6 can close a floodgate, and in this manner, realizes and carries out self-test to route in making process,
It prevents in circuit that there are problems to damage subsequent current part, influences just to produce power supply.
In one embodiment of the present of invention, over-pressure safety device further includes three fuses, A phase line, B phase line and C phase line
It is separately connected the input terminal of three fuses, the output end of three fuses is separately connected the first input of the first air switch 1
End, the second input terminal and third input terminal.
When setting fuse can guarantee that phase line current is excessive, fuse blows form open circuit, ensure the peace of equipment below
It is complete not damaged.
In one embodiment of the present of invention, over-pressure safety device further includes three indicator lights, respectively the first indicator light,
Two indicator lights and third indicator light, the first indicator light are separately connected the 4th output end and breaker 6A phase of the first air switch 1
The output end of line, the second indicator light are separately connected the 4th output end of the first air switch 1 and the output end of breaker 6B phase line,
Third indicator light is separately connected the 4th output end of the first air switch 1 and the output end of breaker 6C phase line.Indicator light can
Phase line and zero curve working condition are monitored, it is enough normal and problem that staff, which can have a clear understanding of route by indicator light,
Place, convenient for the solution of circuit question.
In one embodiment of the present of invention, over-pressure safety device further includes cabinet, the first air switch 1, at the first time after
Electric appliance 2, second time relay 3, the third time relay 4, A.C. contactor 5 and breaker 6 are installed in box house.It is logical
Enclosed protection can be formed to component by crossing such mode, enhance the stability of device entirety, and extend device uses the longevity
Life.
In one embodiment of the present of invention, A.C. contactor 5 is CJX1-9 model A.C. contactor.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although referring to aforementioned reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution should all
It is included within protection scope of the present invention.
Claims (6)
1. a kind of over-pressure safety device, which is characterized in that including the first air switch (1), first time relay (2), second
The time relay (3), the third time relay (4), A.C. contactor (5) and breaker (6), A phase line, B phase line, C phase line and
Zero curve is separately connected first input end, the second input terminal, third input terminal and the 4th input of first air switch (1)
End, the 4th output end of first air switch (1) be separately connected first time relay (2) power end one end,
One end of second time relay (3) power end, one end of the third time relay (4) power end are exchanged with described
First output end of one end of contactor (5) power end, first air switch (1) is separately connected the first time relay
The other end and first input end of device (2) power end, the second output terminal of first air switch (1) are separately connected described
The other end and first input end of two time relays (3) power end, the third output end difference of first air switch (1)
Connect the other end and first input end of the third time relay (4) power end, the of the first time relay (2)
First output end of one output end, the first output end of second time relay (3) and the third time relay (4)
It is separately connected the first input end, the second input terminal and third input terminal of the A.C. contactor (5), first air switch
(1) the first output end or second output terminal or third output end connects the other end of A.C. contactor (5) power end, institute
Two terminals for stating shunt release in breaker (6) connect (5) first output end of A.C. contactor, second output terminal
With any two terminals in third output end.
2. over-pressure safety device according to claim 1, which is characterized in that it further include three fuses, the A phase line,
The B phase line and the C phase line are separately connected the input terminal of three fuses, and the output end of three fuses is separately connected described
First input end, the second input terminal and the third input terminal of first air switch (1).
3. over-pressure safety device according to claim 1, which is characterized in that it further include three indicator lights, respectively first
Indicator light, the second indicator light and third indicator light, first indicator light are separately connected the 4th of first air switch (1)
The output end of the A phase line of output end and breaker (6), second indicator light are separately connected first air switch (1)
The output end of the B phase line of 4th output end and breaker (6), the third indicator light are separately connected first air switch
(1) output end of the C phase line of the 4th output end and breaker (6).
4. over-pressure safety device according to claim 1, which is characterized in that it further include cabinet, first air switch
(1), the first time relay (2), second time relay (3), the third time relay (4), the friendship
Stream contactor (5) and the breaker (6) are installed in the box house.
5. over-pressure safety device according to claim 1, which is characterized in that the A.C. contactor (5) is CJX1-9 type
Number A.C. contactor.
6. over-pressure safety device according to claim 1, which is characterized in that the first time relay (2), described
Two time relays (3) and the third time relay (4) setting time are 3 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810967237.5A CN109038479B (en) | 2018-08-23 | 2018-08-23 | Over-pressure safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810967237.5A CN109038479B (en) | 2018-08-23 | 2018-08-23 | Over-pressure safety device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109038479A true CN109038479A (en) | 2018-12-18 |
| CN109038479B CN109038479B (en) | 2019-11-19 |
Family
ID=64628102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810967237.5A Active CN109038479B (en) | 2018-08-23 | 2018-08-23 | Over-pressure safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109038479B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203553882U (en) * | 2013-10-24 | 2014-04-16 | 国家电网公司 | Transformer low-voltage tripping automatic reclosing device |
| CN206611167U (en) * | 2017-03-07 | 2017-11-03 | 广西真龙实业有限责任公司 | A kind of phase-lacking protective device of three-phase controller switching equipment |
-
2018
- 2018-08-23 CN CN201810967237.5A patent/CN109038479B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203553882U (en) * | 2013-10-24 | 2014-04-16 | 国家电网公司 | Transformer low-voltage tripping automatic reclosing device |
| CN206611167U (en) * | 2017-03-07 | 2017-11-03 | 广西真龙实业有限责任公司 | A kind of phase-lacking protective device of three-phase controller switching equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109038479B (en) | 2019-11-19 |
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