CN2153806Y - Open phase or pressure loss alarm device for switchhouse - Google Patents
Open phase or pressure loss alarm device for switchhouse Download PDFInfo
- Publication number
- CN2153806Y CN2153806Y CN 93216147 CN93216147U CN2153806Y CN 2153806 Y CN2153806 Y CN 2153806Y CN 93216147 CN93216147 CN 93216147 CN 93216147 U CN93216147 U CN 93216147U CN 2153806 Y CN2153806 Y CN 2153806Y
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- China
- Prior art keywords
- circuit
- alarm
- phase
- main line
- photoresistance
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- 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.)
- Expired - Fee Related
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- Fire Alarms (AREA)
Abstract
The utility model relates to an alarm for open-phase or pressure-loss in a switch house. The alarm is composed of a main circuit, a control circuit and an alarm circuit, wherein, the main circuit obtains indication for three-phase voltage by a 380V power supply; the control circuit is provided with three groups of switch circuits; each group is respectively composed of an audion, an adjustable resistor, a photoresistor and a breaker; the alarm circuit comprises a loudspeaker, an alarm lamp and an alarm integrated circuit. The normally open contacts of three relays are connected in parallel with the alarm circuit which shares a dc power supply with the control circuit. The alarm has the advantages of easy installation and use and high safety.
Description
The utility model relates to switchgear building phase failure no volt alarm.
In electric power system, often because disaster and user power utilization accident cause accidents such as the phase failure of grid power blackout high pressure, the low pressure phase failure, the warning device of switchgear building has only overcurrent, tripping operation is reported to the police the equal alarm free function of above-mentioned these accidents at present.As me phase failure accident of house lead in takes place repeatedly in recent years, always called by workshop earlier after accident takes place: " voltage is undesired, and motor has been smoldered." etc., at this moment the switchgear building person on duty just takes measures in a hurry, but day after the fair, has caused the certain economic loss, does not also have this alarm to sell in market at present.
The utility model purpose is, a kind of alarm is provided, this alarm is reported to the police to grid power blackout, electrical network decompression 25%, the high pressure phase failure, low pressure (used change) phase failure, low pressure (used change) tripping operation, in time remind the person on duty to take resolute measures in advance, can avoid and reduce economic loss.
The purpose of this utility model reaches like this: said alarm is made up of main line, operation circuit and alarm circuit, utilize the 380V power supply to obtain the three-phase phase voltage index on the main line, A, B, C three-phase firewire are respectively by fuse, single-pole switch, each is connected into the 220V phase voltage with zero line respectively again mutually, show respectively with three voltage tables, in this main line, be provided with the transformer of 220V/6V, be provided with the light signal of the signal lamp of 6V as the operation circuit reception; On operation circuit, each organizes photoresistance receives A, B, C three-phase supply respectively by cone light signal, adopt biasing circuits respectively as the switch of three relays by three triodes, and divide on three groups of direct supplys that are attempted by a 7.5V, each upper offset circuit of every group of on-off circuit connects an adjustable resistance, and each below-center offset circuit of every group of on-off circuit connects photoresistance; Alarm circuit comprises alarming horn, alarm lamp and warning integrated circuit, and three normally opened contacts of three relays are attempted by on the alarm circuit, and this alarm circuit and operation circuit are with a direct supply.Utilize the on-off action of three triodes, three photoresistance receive the light signal of three-phase supply respectively by cone, when light source weakens, the photoresistance resistance increases, and base voltage raises, the triode conducting, the relay adhesive is reported to the police, thereby the purpose of utility model has just reached fully.
Below in conjunction with accompanying drawing the utility model is elaborated:
Accompanying drawing 1 is this alarm wiring schematic diagram;
Accompanying drawing 2 is main line schematic diagrams;
Accompanying drawing 3 is operation circuit schematic diagrams;
Accompanying drawing 4 is alarm circuit schematic diagrams.
The used label of the utility model is as follows:
1: triode 2: relay 3: cone
4: photoresistance 5: transformer 6: adjustable resistance
7: alarming horn 8: alarm lamp 9: the warning integrated circuit
10: DC power supply switch 11: direct supply 12: pilot lamp
13: single-phase voltage table 14: single-pole switch 15: fuse
16: signal lamp
From accompanying drawing 1 as seen to 4, this alarm is by main line, operation circuit and alarm circuit are formed, the main line of this alarm does not have circuit to be connected with alarm circuit and operation circuit, on main line, utilize the 380V power supply to obtain the three-phase phase voltage index, A, B, the C three-phase firewire is respectively by fuse (15), single-pole switch (14), each is connected into the 220V phase voltage with zero line respectively again mutually, and show with three single-phase voltage tables (13), in main line, be provided with 220V/6V transformer (5) and be provided with the light signal of the signal lamp (16) of 6V as the operation circuit reception, on operation circuit, each is organized photoresistance (4) and receives A by cone (3) respectively, B, the light signal of C three-phase supply, adopt biasing circuit respectively as the switch of three relays (2) by three triodes (1), and divide on three groups of direct supplys (11) that are attempted by a 7.5V, each upper offset circuit of every group of on-off circuit connects an adjustable resistance (6), each below-center offset circuit of every group of on-off circuit connects photoresistance (4), alarm circuit comprises alarming horn (7), alarm lamp (8) and warning integrated circuit (9), three normally opened contacts of three relays (2) are attempted by on the alarm circuit, this alarm circuit and operation circuit are with a direct supply (11), the box-packed one-tenth drawer type of battery dc.On alarm circuit, warning integrated circuit (9) links with alarm lamp (8) and alarming horn (7) respectively.Also be provided with pilot lamp (12), single-phase voltage table (13) and single-pole switch (14) on the warning dial plate, this voltage table is used as observing with the analysis accident, and following five kinds of situations are arranged:
1. grid power blackout: three-phase electricity pushes back zero.
2. the high phase that breaks: voltage is respectively 110V, 165V, 220V.
3. the electrical network decompression 25%: three-phase voltage is all low, about 165V.
4. low pressure (used change) phase failure: the phase failure returns zero, and other are normal.
5. low pressure (used change) tripping operation: three-phase electricity pushes back zero, and instrument indication in hyperbaric chamber is normal.
The method of work of control circuit:
Use with the switch that three triodes (1) adopt biasing circuit to make relay (2), divide on three groups of direct supplys (11) that are attempted by 7.5V, every group method of work is the same, the upper offset circuit connects an adjustable resistance (6), the below-center offset circuit connects photoresistance (4), and photoresistance receives the light signal of A, B, C three-phase supply respectively by cone (3).When light source weakened, photoresistance (4) resistance increased, and base voltage raises, triode (1) conducting, and relay (2) adhesive is reported to the police.
Adjustment method:
Earlier attaching plug is inserted on the 380V power supply, it is all normal to observe three-phase voltage, and two lines of a phase (fire 1) wherein are attempted by in the outlet of pressure regulator, and this phase voltage is transferred to about 160V, transfers adjustable resistance again, is transferred to alert locations and locatees.Other two-phase also mixes up like this, just can be to above-mentioned accident alarming.
The utlity model has following advantage:
Main line and warning system do not have connection, and be therefore, safe and reliable; Alarm circuit is the normally opened contact of three relays (2) and connect, as long as there is a closing of contact just can report to the police, dresses up drawer type for the power-supply battery (11) that control circuit and alarm circuit share, and checks or to change battery especially convenient; This alarm is easy for installation, can be positioned on night shift room or lobby, and it has the reliable characteristics of convenient and safe sensitivity; Circuit is simple in addition, be convenient to make, and be the effective warning device that remedies weak point in the electric power system.
Claims (1)
1, switchgear building phase failure no volt alarm, it is characterized in that: form by main line, operation circuit and alarm circuit, utilize the 380V power supply to obtain the three-phase phase voltage index on the main line, A, B, C three-phase firewire are respectively by fuse, single-pole switch, each is connected into the 220V phase voltage with zero line respectively again mutually, show respectively with three voltage tables, in main line, be provided with the transformer of 220V/6V, and the light signal of the signal lamp of 6V as the operation circuit reception arranged; On operation circuit, each organizes photoresistance receives A, B, C three-phase supply respectively by cone light signal, adopt biasing circuits respectively as the switch of three relays by three triodes, and divide on three groups of direct supplys that are attempted by a 7.5V, each upper offset circuit of every group of on-off circuit connects an adjustable resistance, and each below-center offset circuit of every group of on-off circuit connects photoresistance; Alarm circuit comprises alarming horn, alarm lamp and warning integrated circuit, and three normally opened contacts of three relays are attempted by on the alarm circuit, and this alarm circuit and operation circuit are with a direct supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93216147 CN2153806Y (en) | 1993-06-18 | 1993-06-18 | Open phase or pressure loss alarm device for switchhouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93216147 CN2153806Y (en) | 1993-06-18 | 1993-06-18 | Open phase or pressure loss alarm device for switchhouse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2153806Y true CN2153806Y (en) | 1994-01-19 |
Family
ID=33796412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93216147 Expired - Fee Related CN2153806Y (en) | 1993-06-18 | 1993-06-18 | Open phase or pressure loss alarm device for switchhouse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2153806Y (en) |
-
1993
- 1993-06-18 CN CN 93216147 patent/CN2153806Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |