CN209657476U - A kind of low pressure overload warning device - Google Patents
A kind of low pressure overload warning device Download PDFInfo
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- CN209657476U CN209657476U CN201920692975.3U CN201920692975U CN209657476U CN 209657476 U CN209657476 U CN 209657476U CN 201920692975 U CN201920692975 U CN 201920692975U CN 209657476 U CN209657476 U CN 209657476U
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- alarm
- voltage
- mechanical
- input terminal
- preset value
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Abstract
The utility model discloses a kind of low pressure overload warning devices, including comparator and alarm；Comparator includes current input terminal, voltage input end and output switch parameter end, and output switch parameter end is electrically connected to alarm；Current input terminal is electrically connected to the end of incoming cables of mechanical ammeter, and voltage input end is electrically connected to the end of incoming cables of mechanical voltmeter；When the electric current of current input terminal is greater than electric current preset value, trigger switch amount output end movement, alarm issues alarm；When the voltage of voltage input end is greater than voltage preset value, trigger switch amount output end movement, alarm issues alarm.By comparator by the electric current of the end of incoming cables of mechanical ammeter compared with electric current preset value, by the voltage of the end of incoming cables of mechanical voltmeter compared with voltage preset value, when the former current or voltage is greater than electric current preset value or voltage preset value, alarm issues alarm, and mechanical ammeter or mechanical voltmeter is prompted to damage.
Description
Technical field
The utility model belongs to low pressure alarming technical field more particularly to a kind of low pressure overload warning device.
Background technique
In the prior art, many low-pressure electric cabinets use mechanical gauge table (such as mechanical ammeter, mechanical voltage
Table) measurement electric power data.But when a certain moment overload, i.e., electric current or voltage are more than range ability, mechanical to measure
The pointer of table has damaged, and reading is already inaccurate.Even if load has reduced after this, but total indicator reading is still inaccurate
Really, system security risk has thus been buried.
Utility model content
The purpose of this utility model is to provide a kind of low pressure overload warning devices, to solve the above technical problem.
For this purpose, the utility model uses following technical scheme:
A kind of low pressure overload warning device, including comparator and alarm；
The comparator includes current input terminal, voltage input end and output switch parameter end, the output switch parameter end electricity
It is connected to the alarm；
The current input terminal is electrically connected to the end of incoming cables of mechanical ammeter, and the voltage input end is electrically connected to machinery
The end of incoming cables of formula voltmeter；
When the electric current of the current input terminal is greater than electric current preset value, the output switch parameter end movement is triggered, it is described
Alarm issues alarm；
When the voltage of the voltage input end is greater than voltage preset value, the output switch parameter end movement is triggered, it is described
Alarm issues alarm.
Optionally, the output switch parameter end includes several output ports, and the quantity of all output ports is equal to
The sum of the quantity of the quantity of the current input terminal and the voltage input end；
The alarm be equipped with several indicator lights, several described indicator lights respectively with output port described in several
It is electrically connected one by one.
Optionally, the current input terminal and the mechanical ammeter acquire same load current, the voltage jointly
Input terminal and the mechanical voltmeter same collection voltages jointly.
Optionally, the alarm is equipped with reset switch.
Optionally, the output switch parameter end is time-delay relay.
Compared with prior art, the utility model embodiment has the advantages that
A kind of low pressure overload warning device provided by the embodiment of the utility model, by comparator by mechanical ammeter
End of incoming cables electric current compared with electric current preset value, by the voltage of the end of incoming cables of mechanical voltmeter compared with voltage preset value,
When the former current or voltage is greater than electric current preset value or voltage preset value, alarm issues alarm, prompts mechanical electric current
Table or mechanical voltmeter have damaged.
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, before not making the creative labor property
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of structural schematic diagram of low pressure overload warning device provided by the embodiment of the utility model.
It illustrates:
Mechanical ammeter 10, mechanical voltmeter 11, current input terminal 12, voltage input end 13, output switch parameter end
14, alarm 15, comparator 16, electrical cabinet 17.
Specific embodiment
It is practical below in conjunction with this to enable the purpose of this utility model, feature, advantage more obvious and understandable
Attached drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that under
The described embodiments are only a part of the embodiments of the utility model in face, and not all embodiment.Based on the utility model
In embodiment, all other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, fall within the protection scope of the utility model.
Refering to Figure 1, present embodiments providing a kind of low pressure overload warning device, including comparator 16 and alarm
Device 15.
The comparator 16 includes current input terminal 12, voltage input end 13 and output switch parameter end 14, the switching value
Output end 14 is electrically connected to the alarm 15.
The current input terminal 12 is electrically connected to the end of incoming cables of mechanical ammeter 10, and the voltage input end 13 is electrically connected
In the end of incoming cables of mechanical voltmeter 11.By current input terminal 12 detect the end of incoming cables of mechanical ammeter 10 electric current whether
More than electric current preset value, whether the voltage that voltage input end 13 detects the end of incoming cables of mechanical voltmeter 11 is default more than voltage
Value.
When the electric current of the current input terminal 12 is greater than electric current preset value, triggers the output switch parameter end 14 and acts,
The alarm 15 issues alarm；
When the voltage of the voltage input end 13 is greater than voltage preset value, triggers the output switch parameter end 14 and acts,
The alarm 15 issues alarm.
Specifically, the shown movement of output switch parameter end 14 includes two kinds of situations: one, switching to closed state by off-state；
Two, off-state is switched to by closed state.
Wherein, alarm 15 and comparator 16 may be alternatively mounted on electrical cabinet 17, also can choose and are mounted on monitoring room.
Therefore, a kind of low pressure overload warning device provided by the embodiment of the utility model, will be mechanical by comparator 16
The electric current of the end of incoming cables of formula ammeter 10 is compared with electric current preset value, by the voltage and voltage of the end of incoming cables of mechanical voltmeter 11
Preset value compares, and when the former current or voltage is greater than electric current preset value or voltage preset value, alarm 15 issues alarm, mentions
Show that mechanical ammeter 10 or mechanical voltmeter 11 have damaged, total indicator reading is already insincere, and the exposure system is hidden safely
Suffer from.
Further, the output switch parameter end 14 includes several output ports, the quantity of all output ports
Equal to the quantity of the current input terminal 12 and the sum of the quantity of the voltage input end 13；
The alarm 15 be equipped with several indicator lights, several described indicator lights respectively with output end described in several
Mouth is electrically connected one by one.
In the embodiment, by several indicator lights, each mechanical voltmeter 11 or mechanical ammeter are indicated respectively
10, when the damage of the pointer of some mechanical gauge table, corresponding indicator light bright light.
Further, the current input terminal 12 and the mechanical ammeter 10 acquire same load current, institute jointly
State voltage input end 13 and the common same collection voltages of the mechanical voltmeter 11.
Further, the alarm 15 is equipped with reset switch.After the mechanical gauge table more renewed, pass through reset
Switch resets alarm 15.
Further, the output switch parameter end 14 is time-delay relay.I.e. alarm 15 issues the premise alarmed are as follows: when
When the time that the electric current of the current input terminal 12 is greater than electric current preset value is greater than the setting time of time-delay relay, alarm 15
Issue alarm；It is greater than the setting time of time-delay relay when the time that the voltage of the voltage input end 13 is greater than voltage preset value
When, alarm 15 issues alarm.
The above, above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；Although ginseng
The utility model is described in detail according to previous embodiment, those skilled in the art should understand that: it is still
It is possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equally replaced
It changes；And these are modified or replaceed, various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
Spirit and scope.
Claims (5)
1. a kind of low pressure overload warning device, which is characterized in that including comparator and alarm；
The comparator includes current input terminal, voltage input end and output switch parameter end, the output switch parameter end electrical connection
In the alarm；
The current input terminal is electrically connected to the end of incoming cables of mechanical ammeter, and the voltage input end is electrically connected to mechanical electricity
Press the end of incoming cables of table；
When the electric current of the current input terminal is greater than electric current preset value, the output switch parameter end movement, the alarm are triggered
Device issues alarm；
When the voltage of the voltage input end is greater than voltage preset value, the output switch parameter end movement, the alarm are triggered
Device issues alarm.
2. a kind of low pressure overload warning device according to claim 1, which is characterized in that the output switch parameter end packet
Several output ports are included, the quantity of all output ports is equal to the quantity and the voltage input of the current input terminal
The sum of the quantity at end；
The alarm be equipped with several indicator lights, several described indicator lights respectively with output port described in several one by one
Electrical connection.
3. a kind of low pressure overload warning device according to claim 1, which is characterized in that the current input terminal and institute
It states mechanical ammeter and acquires same load current jointly, the voltage input end and mechanical voltmeter is common same adopts
Collecting voltage.
4. a kind of low pressure overload warning device according to claim 1, which is characterized in that the alarm is equipped with multiple
Bit switch.
5. a kind of low pressure overload warning device according to claim 1, which is characterized in that the output switch parameter end is
Time-delay relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920692975.3U CN209657476U (en) | 2019-05-15 | 2019-05-15 | A kind of low pressure overload warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920692975.3U CN209657476U (en) | 2019-05-15 | 2019-05-15 | A kind of low pressure overload warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209657476U true CN209657476U (en) | 2019-11-19 |
Family
ID=68530186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920692975.3U Active CN209657476U (en) | 2019-05-15 | 2019-05-15 | A kind of low pressure overload warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209657476U (en) |
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2019
- 2019-05-15 CN CN201920692975.3U patent/CN209657476U/en active Active
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