CN2304997Y - Automatic phase-off protective knife-blade switch - Google Patents
Automatic phase-off protective knife-blade switch Download PDFInfo
- Publication number
- CN2304997Y CN2304997Y CN 97221938 CN97221938U CN2304997Y CN 2304997 Y CN2304997 Y CN 2304997Y CN 97221938 CN97221938 CN 97221938 CN 97221938 U CN97221938 U CN 97221938U CN 2304997 Y CN2304997 Y CN 2304997Y
- Authority
- CN
- China
- Prior art keywords
- box
- phase
- sneek
- fuse
- relay
- 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.)
- Expired - Fee Related
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to an automatic phase-off protective knife switch which belongs to the field of a low-voltage electric appliance production. The lower part of the knife switch is provided with an auxiliary switch box, an auxiliary switch handle is arranged in the auxiliary switch box by a torsion spring and extends outside the auxiliary switch box and forms a bending shape below the auxiliary switch handle, and the front end of one section of the auxiliary switch handle positioned in the auxiliary switch box is fixed with a lock rod which forms a movable fit with a pull rod. The front end of the pull rod is supported by a pull rod bracket, the back end of the pull rod is fixed with an armature, the pull rod is sheathed with a spring, the armature is corresponding to an electromagnet, and a coil of the electromagnet is connected with a control circuit arranged in the auxiliary switch box. The utility model has the advantages of convenient operation and simple operation, can be not connected with other devices when in operation, and is an automatic protective knife switch of a mechanical-electrical integration type.
Description
The utility model relates to a kind of outage phase shortage and protects disconnecting link automatically, belongs to low-pressure electronic equipment product.
Common three-phase disconnecting link all is not with any protective device; CN2036322 discloses a kind of open-phase automatic protection disconnecting link switch; it is to install two contactors additional in the switching circuit usually; two contactors are connected in parallel in the three phase mains; the series connection of two contacts of contactor is used, and to reach the open phase protection effect, this device uses very inconvenient; only has open-phase protection, no application value.
The purpose of this utility model is in order to overcome above-mentioned weak point of the prior art, to be controlled automatically by electronic circuit and provide a kind of, the disconnecting link that mechanical action realization outage phase shortage is protected automatically.
The purpose of this utility model is achieved in that it is to install one in the fuse-box bottom of common three-phase disconnecting link to pay fuse-box, by torsion spring a pair sneek is installed in this pair fuse-box, pay sneek and extend to that to pay fuse-box outer and be bending below sneek, be positioned at one section pair of its front end of sneek paying fuse-box and be fixed with locking bar, this locking bar and pull bar are movingly, the pull bar front end supports by rob support, rear end and armature are fixed, be set with spring on the pull bar, described armature is corresponding with electromagnet, this electromagnet coil be installed in the control circuit of paying in the fuse-box and link to each other.Before the sneek that closes; to pay sneek earlier pushes inward; so that will pay sneek by locking bar and pull bar cooperation pins; when in the three phase mains any one mutually or when two-phase phase shortage even outage; control circuit upsprings a pair sneek, with the jack-up sneek promptly by electromagnetic actuation armature automatically; reach disconnecting link and break away from power supply, the purpose of protection motor.
The utility model compared with prior art; have easy to use; simple to operate; can be not during work and advantages such as other devices are connected; owing to belong to electromechanical integration control, particularly machinery control sneek is opened, so stable performance; be a kind of open-phase protection of both having realized, the multi-functional three-phase disconnecting link of the time cutting off the electricity supply automatically again in outage.
The explanation of accompanying drawing drawing:
Fig. 1 is a surface structure schematic diagram of the present utility model.
Fig. 2 is an of the present utility model pair of fuse-box internal mechanical control structure schematic diagram.
Fig. 3 is pull bar of the present utility model and supporting structure schematic diagram thereof.
Fig. 4 is a kind of control circuit schematic diagram of the present utility model.
Fig. 5 is an another kind of control circuit schematic diagram of the present utility model.
Below in conjunction with drawings and Examples in detail the utility model is described in detail.
Disconnecting link of the present utility model is to design on the common three-phase disconnecting link basis that is made of sneek (1) and fuse-box (2), a pair fuse-box (3) is installed in the bottom of fuse-box (2), by torsion spring (6) a pair sneek (4) is housed in this pair fuse-box (3), this pair sneek (4) extends to pay outside the fuse-box (3) and in sneek (1) below and is bending, be positioned at one section pair of its front end of sneek (4) paying fuse-box (3) and be fixed with locking bar (5), this locking bar (5) and pull bar (10) are movingly, pull bar (10) front end is by rob support (12) supporting, the rear end is fixing with rank piece (7), be set with spring (11) on the pull bar (10), described armature (7) is corresponding with electromagnet (8), and this electromagnet (8) coil L joins with the control circuit (9) that is installed in pair fuse-box (3).Chute (14) is set on the rob support (12), pays sneek (4) and support movingly and by support (12) by pin (13) fixed thereon and this chute (14).Control circuit of the present utility model can be made of two kinds of forms, and wherein a kind of control circuit comprises by diode D
1-D
6The three-phase full wave rectifier circuit of forming is by capacitor C
1, C
2The filtering accumulator that branch road is formed is by capacitor C
3, C
4, diode D
7, D
8, D
9, the control relay circuit formed of triode T, circuit breaker J, dropping resistor R, adjustable resistance W, and the normally-closed contact J ＇ of the normally opened contact K of travel switch and relay J, the wherein output of three-phase full wave rectifier circuit and C
1, C
2The branch road two ends join, and the positive pole of this branch road and solenoid L one end join, and negative pole joins the C in the control relay circuit by the normally opened contact K of travel switch and the other end of relay normally-closed contact J and solenoid L
3, C
4, D
7, D
8Form filter rectifier, its input is introduced by C, B two-phase power supply, and output is succeeded the collector electrode of electrical equipment J and triode T respectively, and the base stage of T is by adjustable resistance W, dropping resistor R, diode D
9With A mutually power supply join, be connected to filter capacitor C between the base stage of T and the collector electrode
5Triode T is operated in the full electricity of three-phase in this circuit, the relay adhesive, and solenoid can not obtain, as phase shortage takes place, then triode will not worked, and this moment, relay discharged, and solenoid gets by travel switch and relay normally open contact, electromagnet (8) adhesive, pay the locking bar (5) of sneek (4) and open, upspring at the following pair sneek of the effect of torsion spring (6) (4), jack-up sneek (1) breaks away from power supply, motor can be cut off the power supply at once, do not burn motor because of phase shortage; In addition, utilize capacitor C in the filtering accumulator
1, C
2Store electrical energy also when having a power failure suddenly, makes C except that supplying with the enough direct currents of solenoid L
1, C
2On certain electric energy of having enter solenoid by the relay normally-closed contact, make electromagnetic actuation, pay a sneek locking bar (5) and open, torsion spring (6) energy discharges, pay sneek (4) and push sneek (1) open, make the three-phase disconnecting link break away from power supply, motor can not obtain the energy-conservation safety again of electricity when sent a telegram here next time.Different is the change of control relay circuit for the another kind of control circuit of the utility model and aforementioned control circuit, and this control relay circuit is by capacitor C
3, C
4, C
5, C
6, diode D
7, D
8, D
9, D
10, relay J
1, J
2Form, wherein C
3, C
5, D
7, D
8Form filter rectifier, its input is introduced by the CB two-phase power supply, output relay termination J
1, C
4, C
6, D
9, D
10Form another filter rectifier, its input is introduced by B, A two-phase power supply, its output relay termination J
2By C
1, C
2The positive pole and solenoid L one end of the filtering accumulator that branch road constitutes join, and normally opened contact K one end of negative pole and travel switch joins the other end of K and relay J
1, J
2Two normally-closed contact J
1 ＇, J
2 ＇Parallel branch one end join, the other end of the other end of this branch road and solenoid L joins.This circuit adopts two relay parallel circuitss, during the three phase mains phase shortage, as A phase phase shortage, J
2Conducting, C phase phase shortage, J
1Conducting, B phase phase shortage, J
1, J
2Conducting simultaneously, because two in parallel uses of relay, therefore which phase phase shortage in the three-phase electricity no matter, relay correspondingly is with regard to adhesive, solenoid obtains electricity, and the electromagnet action is opened the locking bar of paying on the sneek (4) (5), push sneek (1) open, the three-phase disconnecting link breaks away from power supply, the motor outage.
Claims (5)
1; a kind of outage phase shortage is protected disconnecting link automatically; comprise the common three-phase disconnecting link that constitutes by fuse-box and sneek; it is characterized in that the fuse-box bottom is equipped with a pair fuse-box; by torsion spring a pair sneek is installed in this pair fuse-box; pay sneek and extend to that to pay fuse-box outer and be bending below sneek; be positioned at one section pair of its front end of sneek paying fuse-box and be fixed with locking bar; this locking bar and pull bar are movingly; the pull bar front end supports by rob support; rear end and armature are fixed; be set with spring on the pull bar, described armature is corresponding with electromagnet, this electromagnet coil be installed in the control circuit of paying in the fuse-box and link to each other.
2, outage phase shortage according to claim 1 is protected disconnecting link automatically, it is characterized in that being provided with on the rob support chute, pay sneek by pin fixed thereon and this chute movingly and by bracket supports.
3, outage phase shortage according to claim 1 and 2 is protected disconnecting link automatically, it is characterized in that control circuit comprises by diode D
1-D
6The three-phase full wave rectifier circuit of forming is by capacitor C
1, C
2The filtering accumulator that branch road is formed is by capacitor C
3, C
4, diode D
7, D
8, D
9, the control relay circuit formed of triode T, relay J, dropping resistor R, adjustable resistance W, and the normally-closed contact J ＇ of the normally opened contact K of travel switch and relay J, the wherein output of three-phase full wave rectifier circuit and C
1, C
2The branch road two ends join, and the positive pole of this branch road and solenoid L one end join, and negative pole joins the C in the control relay circuit by the normally opened contact K of travel switch and the other end of relay normally-closed contact J ＇ and solenoid L
3, C
4, D
7, D
8Form filter rectifier, its input is introduced by C, B two-phase power supply, and output is succeeded the collector electrode of electrical equipment J and triode T respectively, and the base stage of T is by adjustable resistance W, dropping resistor R, diode D
9With A mutually power supply join, be connected to filter capacitor C between the base stage of T and the collector electrode
5
4, outage phase shortage according to claim 1 and 2 is protected disconnecting link automatically, it is characterized in that control relay circuit is by capacitor C
3, C
4, C
5, C
6, diode D
7, D
8, D
9, D
10, ripple device J continues
1, J
2Form, wherein C
3, C
5, C
7, C
8Form filter rectifier, its input is introduced by C, B two-phase power supply, output relay termination J
1, C
4, C
6, C
9, C
10Form another filter rectifier, its input electricity B, A two-phase power supply are introduced, its output relay termination J
2
5, outage phase shortage according to claim 1 and 2 is protected disconnecting link automatically, it is characterized in that by C
1, C
2The positive pole and solenoid L one end of the filtering accumulator that branch road constitutes join, and normally opened contact K one end of negative pole and travel switch joins the other end of K and relay J
1, J
2Two normally-closed contact J
1 ＇, J
2 ＇Parallel branch one end join, the other end of the other end of this branch road and solenoid L joins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97221938 CN2304997Y (en) | 1997-07-18 | 1997-07-18 | Automatic phase-off protective knife-blade switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97221938 CN2304997Y (en) | 1997-07-18 | 1997-07-18 | Automatic phase-off protective knife-blade switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2304997Y true CN2304997Y (en) | 1999-01-20 |
Family
ID=33937164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97221938 Expired - Fee Related CN2304997Y (en) | 1997-07-18 | 1997-07-18 | Automatic phase-off protective knife-blade switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2304997Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668728A (en) * | 2020-07-27 | 2020-09-15 | 张宏东 | Anti-seismic power distribution cabinet |
| CN112289600A (en) * | 2020-09-22 | 2021-01-29 | 安徽莱特实业集团有限公司 | Electric power fire protection device for electric power information system |
-
1997
- 1997-07-18 CN CN 97221938 patent/CN2304997Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668728A (en) * | 2020-07-27 | 2020-09-15 | 张宏东 | Anti-seismic power distribution cabinet |
| CN112289600A (en) * | 2020-09-22 | 2021-01-29 | 安徽莱特实业集团有限公司 | Electric power fire protection device for electric power information system |
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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 |