CN206432692U - Safety alarm device and electric power system - Google Patents
Safety alarm device and electric power system Download PDFInfo
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- CN206432692U CN206432692U CN201720162516.5U CN201720162516U CN206432692U CN 206432692 U CN206432692 U CN 206432692U CN 201720162516 U CN201720162516 U CN 201720162516U CN 206432692 U CN206432692 U CN 206432692U
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Abstract
The utility model provides a kind of safety alarm device and electric power system, is related to the technical field of safe power supply, effectively can protect transmission line of electricity when the failures such as overvoltage occur for power network, improve the security of transmission line of electricity.The safety alarm device, including induction coil, alarm chip and alarm；The induction coil is used to connect with the primary coil of transformer, and produces induced signal；The alarm chip receives the induced signal, when the induced signal exceeds preset value, the alarm chip output alarm enabling signal；The alarm receives the alarm enabling signal, and sends alarm according to the alarm enabling signal.
Description
Technical field
The utility model is related to safe power supply technical field, is more particularly, to a kind of safety alarm device and power supply
System.
Background technology
With the development of power technology, industrial-frequency alternating current (i.e. civil power) has spread all over each family and unit, electricity consumption
Security also becomes more and more important.
Current civil power is generally powered by two output lines, wherein one is live wire, another is zero line, live wire and zero line
Between voltage be line voltage.Line voltage between two output lines, is through transformer by the high-tension electricity from power network
Output.Transformer is generally by iron core, and one-level is wrapped in primary coil and secondary coil composition on iron core, wherein primary coil
Two ends connection power network, the two ends of secondary coil connect two output lines.Using between iron core and primary coil, secondary coil
Electromagnetic induction effect, you can the high-tension electricity of power network is converted to the line voltage of low pressure.
But, in actual power supply process, it is impossible to the work in the case where power network locates the stable rated voltage of load always is completely secured
Make, but an operated within range near rated voltage.If line voltage is higher by the 15% of rated voltage, generally just by
Regard as over-pressed phenomenon.Ageing equipment, technical failure, man-made fault, natural calamity, the reason such as send a telegram here again that has a power failure are likely to lead
Over-pressed phenomenon is caused, overvoltage can use electric equipment to generate heat, puncture, burn out, or even cause fire, therefore it is very to take precautions against over-pressed phenomenon
It is necessary.
At present, it is typically that overvoltage protector is set in ac output end, to civil power for the safeguard procedures of power network overvoltage
The voltage of outlet line is monitored.When the voltage of outlet line is excessive, using the mode such as air switch or relay disconnection,
The power supply of outlet line is cut off, to realize the protection of circuit and electrical equipment.But, the sensitivity of existing overvoltage protector compared with
It is low, effectively circuit can not be protected when occurring overvoltage.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of safety alarm device and electric power system, Neng Gou
Power network occurs effectively to protect transmission line of electricity during the failures such as overvoltage, improves the security of transmission line of electricity.
In a first aspect, the utility model embodiment provides a kind of safety alarm device, including induction coil, alarm chip
And alarm；
The induction coil is used to connect with the primary coil of transformer, and produces induced signal；
The alarm chip receives the induced signal, when the induced signal exceeds preset value, the alarm chip
Output alarm enabling signal；
The alarm receives the alarm enabling signal, and sends alarm according to the alarm enabling signal.
With reference in a first aspect, the utility model embodiment provide first aspect the first possible embodiment, its
In, the alarm chip includes comparing unit and trigger element；
The comparing unit receives the induced signal, and the induced signal is compared with the preset value；
When the induced signal exceeds preset value, the trigger element output alarm enabling signal.
With reference in a first aspect, the utility model embodiment provide first aspect second of possible embodiment, its
In, the warning device includes buzzer siren.
With reference in a first aspect, the utility model embodiment provide first aspect the third possible embodiment, its
In, visual alarm is also included in the warning device.
With reference in a first aspect, the utility model embodiment provide first aspect the 4th kind of possible embodiment, its
In, it is connected with filter capacitor between the alarm chip and the induction coil.
Second aspect, the utility model embodiment also provides a kind of electric power system, including transformer and above-mentioned safety
Warning device；
The induction coil is connected with the primary coil of the transformer；
The secondary coil connection ac output end of the transformer.
With reference to second aspect, the utility model embodiment provides the first possible embodiment of second aspect, its
In, the iron core of the transformer is E shaped iron cores.
With reference to second aspect, the utility model embodiment provides second of possible embodiment of second aspect, its
In, the primary coil and secondary coil of the transformer are respectively wound around the magnetic core at the E shaped iron cores two ends；
Or, two parts of the primary coil of the transformer are respectively wound around the magnetic core at the E shaped iron cores two ends, described
Two parts of the secondary coil of transformer are respectively wound around the magnetic core at the E shaped iron cores two ends.
With reference to second aspect, the utility model embodiment provides the third possible embodiment of second aspect, its
In, the transformer also includes the tertiary coil and the 4th coil for being used to isolate clutter, and the tertiary coil and the described 4th
Coil is wrapped in the magnetic core in the middle of the E shaped iron cores.
With reference to second aspect, the utility model embodiment provides the 4th kind of possible embodiment of second aspect, its
In, the magnetic core in the middle of the E shaped iron cores can extend along direction and stretch, and be existed with adjusting the tertiary coil and the 4th coil
The number of turn wound on magnetic core in the middle of the E shaped iron cores.
The utility model embodiment brings following beneficial effect：
In the safety alarm device that the utility model embodiment is provided, including induction coil, alarm chip and alarm.Its
In, induction coil is used to connect with the primary coil of transformer, and produces the sense equal with the electric current of the primary coil of transformer
Induction signal.Alarm chip receives induced signal, when induced signal exceeds preset value, alarm chip output alarm enabling signal.
Alarm receives the alarm enabling signal that alarm chip is sent, and can send alarm according to the alarm enabling signal.This practicality
The safety alarm device that new embodiment is provided, is generated synchronous with the size of current of the primary coil of transformer using induction coil
Induced signal, and using the size of current (i.e. the size of current of the primary coil of transformer) of the induction coil be used as power network overvoltage
Etc. the alert if of failure, therefore, it is possible to improve the sensitivity of circuit protection, more efficient protection transmission line of electricity, so as to improve
The security of transmission line of electricity.
Other feature and advantage of the present utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages are in explanation
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
To enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Coordinate appended accompanying drawing, be described in detail below.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram for the safety alarm device that the utility model embodiment one is provided；
Fig. 2 is the schematic diagram of alarm chip in the safety alarm device that the utility model embodiment one is provided；
Fig. 3 is the schematic diagram for the electric power system that the utility model embodiment two is provided；
Fig. 4 is the schematic diagram of transformer in the utility model embodiment two；
Fig. 5 is another schematic diagram of transformer in the utility model embodiment two.
Embodiment
To make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with accompanying drawing to this
The technical scheme of utility model is clearly and completely described, it is clear that described embodiment is that the utility model part is real
Apply example, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, belongs to the scope of the utility model protection.
At present, it is typically that overvoltage protector is set in ac output end, to civil power for the safeguard procedures of power network overvoltage
The voltage of outlet line is monitored.When the voltage of outlet line is excessive, using the mode such as air switch or relay disconnection,
The power supply of outlet line is cut off, to realize the protection of circuit and electrical equipment.But, the sensitivity of existing overvoltage protector compared with
It is low, effectively circuit can not be protected when occurring overvoltage.
Based on this, the purpose of this utility model is to provide a kind of safety alarm device and electric power system, can be in electricity
Net occurs effectively to protect transmission line of electricity during the failures such as overvoltage, so as to improve the security of transmission line of electricity.
Embodiment one：
The utility model embodiment provides a kind of safety alarm device, can be applied to the power supply field such as family, office, factory
Scape.As shown in figure 1, the safety alarm device includes induction coil L0, alarm chip and alarm.
Induction coil L0 be used for connect with the primary coil of transformer, so induction coil L0 electric current and transformer at the beginning of
The size of current of level coil is synchronous, and regard induction coil L0 electric current as induced signal.
Alarm chip receives induced signal, when induced signal exceeds preset value, alarm chip output alarm enabling signal.
Alarm receives the alarm enabling signal that alarm chip is sent, and sends alarm according to alarm enabling signal.
The safety alarm device that the utility model embodiment is provided, the primary line with transformer is generated using induction coil L0
The synchronous induced signal of the size of current of circle, and by induction coil L0 size of current (the i.e. electricity of the primary coil of transformer
Flow size) as the alert if of the failures such as power network overvoltage, therefore, it is possible to improve the sensitivity of circuit protection, more efficient protection
Transmission line of electricity, so as to improve the security of transmission line of electricity.
In the present embodiment, induction coil L0 two ends connect two inputs of alarm chip respectively, connect alarm chip
Receive the induced signal that induction chip is produced.Also, filter capacitor C0 is connected between induction coil L0 one end and alarm chip,
During preventing that the amplitude of induced signal is excessive, alarm chip is caused damage.
The warning device that the utility model embodiment is used, a kind of is after preventing or preventing caused by the generation of certain event
Really, alarm is sent to remind or warn user to take the electronic product of the precautionary measures.
As a preferred scheme, the warning device in the utility model embodiment includes buzzer siren.Work as alarm
When device receives the alarm enabling signal that alarm chip is sent, buzzer siren will send alarm sound, point out user to take
The precautionary measures.
Further, visual alarm is also included in the warning device in the utility model embodiment.When warning device is received
During the alarm enabling signal sent to alarm chip, buzzer siren will send alarm light, point out user to take strick precaution to arrange
Apply.
As shown in Fig. 2 the alarm chip of the present embodiment includes comparing unit and trigger element.Comparing unit receives sensing
Signal, and induced signal is compared with preset value.When induced signal exceeds preset value, trigger element output alarm starts
Signal.
As a preferred scheme, multistable trigger is provided with trigger element, multistable trigger is also referred to as n stable states
Trigger, is the further development of bistable state tentaculum.If input and remaining output end at different levels of every one-level of n amplifying stage
Between have dc-couple, then n stable state is can obtain under certain bar, and there was only in each stable state one-level conducting, and its
Remaining is turned off.In nonbinary counter circuit, the quick sound under a variety of different conditions can be realized using polymorphic trigger
Should, thus than flip and flop generator response speed faster.
By using with highly sensitive comparing unit and trigger element in the utility model embodiment, and in triggering
Multistable trigger is set in unit, alarm chip was responded within 0.1 second, so as to send report within the extremely short time
Alert enabling signal, effectively protection power network and transformer.
The safety alarm device that the utility model embodiment is provided, the primary line with transformer is generated using induction coil L0
The synchronous induced signal of the size of current of circle, and by induction coil L0 size of current, that is, by the primary line of transformer
The size of current of circle as the failures such as power network overvoltage alert if, therefore, it is possible to improve the sensitivity of circuit protection, more added with
Effect protection transmission line of electricity, so as to improve the security of transmission line of electricity.
Embodiment two：
As shown in figure 3, the utility model embodiment also provides a kind of electric power system, including transformer TB and above-mentioned implementation
The safety alarm device that example one is provided.Wherein, induction coil L0 connects with transformer TB primary coil L1, transformer TB time
Level coil L2 connection ac output ends.The power end of alarm chip is connected to primary coil L1 two ends, and in primary
Between coil L1 wherein one end and alarm chip, the filter circuit of filter resistance R1 and filter capacitor C1 compositions is provided with.
As a preferred scheme, the iron core of the transformer TB in the utility model embodiment is E shaped iron cores.Such as Fig. 4 institutes
Show, E shaped iron cores are made up of a horizontal magnetic core and three longitudinal magnetic cores, are each provided with the two ends and centre position of horizontal magnetic core
One longitudinal magnetic core.
In the present embodiment, transformer TB primary coil L1 and secondary coil L2 are respectively wound around the magnetic at E shaped iron cores two ends
Core.Figure 4, it is seen that transformer TB primary coil L1 is wrapped on the magnetic core in left side, transformer TB secondary
Coil L2 is wrapped on the magnetic core on right side.
As shown in figure 5, in another embodiment, this transformer TB primary coil L1 two parts are respectively wound around
The magnetic core at E shaped iron cores two ends, transformer TB secondary coil L2 two parts are respectively wound around the magnetic core at E shaped iron cores two ends.
It is further that the transformer TB in the utility model embodiment also includes the tertiary coil L3 for being used to isolate clutter
With the 4th coil L4, and tertiary coil L3 and the 4th coil L4 are wrapped in the magnetic core in the middle of E shaped iron cores.As shown in Figure 3 and Figure 4,
Tertiary coil L3 and the 4th coil L4 one end are grounded respectively, and are connected with filter capacitor C2 and limit between the 4th coil L4 and ground
Leakage resistance R2.
By setting tertiary coil L3 and the 4th coil L4, primary coil L1 first enters with tertiary coil L3, the 4th coil L4
Row electromagnetic induction, then electromagnetic induction is carried out by tertiary coil L3, the 4th coil L4, thus it is indirect by electric energy from primary coil L1
Transmit to secondary coil L2.The clutter that can so isolate between primary coil L1 and secondary coil L2, makes the primary of grid side
The clutter produced on coil L1, is unlikely to propagate to secondary coil L2, to ensure the stabilization of ac output end.
In the present embodiment, the magnetic core in the middle of E shaped iron cores can extend along direction and stretch, to adjust tertiary coil L3 and the 4th
The number of turn that coil L4 is wound on the magnetic core in the middle of E shaped iron cores.By changing tertiary coil L3 and the 4th coil L4 in centre
Effective turn on magnetic core, can adjust primary coil L1 and secondary coil L2 voltage ratio, and then adjust ac output end
Output voltage.
The collapsing length of magnetic core in the middle of E shaped iron cores, can be adjusted manually, can also be by setting drive mechanism to adjust automatically
Section.
In the electric power system that the utility model embodiment is provided, in addition to the first relay J1 and the second relay J2.The
One relay J1 can be used for the protection device of connection ac output end, such as the output end of protection device is connected into the first relay
J1 control coil.First relay J1 output end is connected with the second relay J2 control coil, the second relay J2's
Output end is connected with transformer TB primary coil L1.
As a preferred scheme, when the first relay J1 is closed type relay, i.e. control coil no power first after
Electrical equipment J1 output is in closure state.Meanwhile, when the second relay J2 is normal-open type relay, i.e. control coil no power
First relay J1 output end is off.
In the case of electric power system normal power supply, the first relay J1 control coil no power, the first relay J1
Output in closure state, therefore control power supply can be supplied by the first relay J1 to the second relay J2 control coil
Electricity.Second relay J2 control coil is in the case of energization, and its output is in closure state, to maintain transformer TB's
Primary coil L1L1 continued powers.
When protection device exports power-off signal, the first relay J1 control coil is powered, and makes the first relay J1's
Output end disconnects.Because the first relay J1 output end disconnects, therefore the second relay J2 control coil power-off, make second
Relay J2 output end disconnects, so that the connection of power network and transformer TB primary coil L1 is cut off, to cut off electric power system
Power supply, realize the protection of supply line.
In the present embodiment, the first relay J1 uses closed type relay, and the second relay J2 uses normal-open type relay
Have further the advantage that：In actual electric power system, can the first relay J1 output end with the second relay J2's
The relay for multiple different purposes of being connected between control coil, such as the relay of relay, overvoltage protection for arc protection
Device, and the relay for short-circuit protection.These relays also all use closed type relay, and each relay is defeated
Go out control coil of the end all with the second relay J2 connect, then wherein the disconnection of any one relay when, can make second after
Electrical equipment J2 control coil power-off, so as to cut off the power supply of power system.
The electric power system that the utility model embodiment two is provided, the safety alarm device provided with above-described embodiment one, tool
There is identical technical characteristic, so can also solve identical technical problem, reach identical technique effect.
In addition, in the description of the utility model embodiment, unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly be connected
Connect；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the utility model.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outer " are, based on orientation shown in the drawings or position relationship, to be only
Described for the ease of description the utility model and simplifying, rather than to indicate or imply that signified device or element must have specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
In addition, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying phase
To importance.
Finally it should be noted that：Embodiment described above, embodiment only of the present utility model, to illustrate this
The technical scheme of utility model, rather than its limitations, protection domain of the present utility model are not limited thereto, although with reference to foregoing
The utility model is described in detail embodiment, it will be understood by those within the art that：It is any to be familiar with this skill
The technical staff in art field is in the technical scope that the utility model is disclosed, and it still can be to the skill described in previous embodiment
Art scheme is modified or can readily occurred in change, or carries out equivalent substitution to which part technical characteristic；And these modifications,
Change is replaced, and the essence of appropriate technical solution is departed from the spirit and model of the utility model embodiment technical scheme
Enclose, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model described should be wanted with right
The protection domain asked is defined.
Claims (10)
1. a kind of safety alarm device, it is characterised in that including induction coil, alarm chip and alarm；
The induction coil is used to connect with the primary coil of transformer, and produces induced signal；
The alarm chip receives the induced signal, when the induced signal exceeds preset value, the alarm chip output
Alarm enabling signal；
The alarm receives the alarm enabling signal, and sends alarm according to the alarm enabling signal.
2. safety alarm device according to claim 1, it is characterised in that the alarm chip include comparing unit and
Trigger element；
The comparing unit receives the induced signal, and the induced signal is compared with the preset value；
When the induced signal exceeds preset value, the trigger element output alarm enabling signal.
3. safety alarm device according to claim 1, it is characterised in that the warning device includes buzzing alarm
Device.
4. safety alarm device according to claim 3, it is characterised in that also include light warning in the warning device
Device.
5. safety alarm device according to claim 4, it is characterised in that the alarm chip and the induction coil it
Between be connected with filter capacitor.
6. a kind of electric power system, it is characterised in that the safety report including transformer and as described in any one of claim 1 to 5
Alarm device；
The induction coil is connected with the primary coil of the transformer；
The secondary coil connection ac output end of the transformer.
7. electric power system according to claim 6, it is characterised in that the iron core of the transformer is E shaped iron cores.
8. electric power system according to claim 7, it is characterised in that the primary coil and secondary coil of the transformer point
The magnetic core at the E shaped iron cores two ends is not wrapped in；
Or, two parts of the primary coil of the transformer are respectively wound around the magnetic core at the E shaped iron cores two ends, the transformation
Two parts of the secondary coil of device are respectively wound around the magnetic core at the E shaped iron cores two ends.
9. electric power system according to claim 8, it is characterised in that the transformer also includes being used for isolating the of clutter
Three-winding and the 4th coil, and the tertiary coil and the 4th coil are wrapped in the magnetic core in the middle of the E shaped iron cores.
10. electric power system according to claim 9, it is characterised in that the magnetic core in the middle of the E shaped iron cores can be extended along
Direction is stretched, to adjust the number of turn that the tertiary coil and the 4th coil are wound on the magnetic core in the middle of the E shaped iron cores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720162516.5U CN206432692U (en) | 2017-02-22 | 2017-02-22 | Safety alarm device and electric power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720162516.5U CN206432692U (en) | 2017-02-22 | 2017-02-22 | Safety alarm device and electric power system |
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| Publication Number | Publication Date |
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| CN206432692U true CN206432692U (en) | 2017-08-22 |
Family
ID=59590242
Family Applications (1)
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| CN201720162516.5U Active CN206432692U (en) | 2017-02-22 | 2017-02-22 | Safety alarm device and electric power system |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711936A (en) * | 2017-02-22 | 2017-05-24 | 中领世能（天津）科技有限公司 | Safety alarm device and power supply system |
-
2017
- 2017-02-22 CN CN201720162516.5U patent/CN206432692U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711936A (en) * | 2017-02-22 | 2017-05-24 | 中领世能（天津）科技有限公司 | Safety alarm device and power supply system |
| WO2018152986A1 (en) * | 2017-02-22 | 2018-08-30 | 中领世能（天津）科技有限公司 | Safety alarm apparatus and power supply system |
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