CN204805683U - Auxiliary relay protection device among solenoid valve control circuit - Google Patents
Auxiliary relay protection device among solenoid valve control circuit Download PDFInfo
- Publication number
- CN204805683U CN204805683U CN201520446886.2U CN201520446886U CN204805683U CN 204805683 U CN204805683 U CN 204805683U CN 201520446886 U CN201520446886 U CN 201520446886U CN 204805683 U CN204805683 U CN 204805683U
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- solenoid valve
- auxiliary relay
- diode
- control circuit
- valve control
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Abstract
The utility model discloses an auxiliary relay protection device among solenoid valve control circuit, including solenoid valve coil and auxiliary relay, solenoid valve coil and auxiliary relay's normally open contact establish ties mutually, have a set of diode cluster at the at least reverse parallel connection in solenoid valve coil's both ends, and every diode cluster of group is at least including a diode. The utility model has the advantages that: after this auxiliary relay protection device comes into operation, the induced voltage that solenoid valve control circuit produced can not be again through the auxiliary relay contact, but the protection circuit consumption through solenoid valve coil and diode fabric one -tenth totally, even a certain diode short circuit or open a way, the guard action is same effective, the normally open contact that has so effectively the avoided auxiliary relay induced voltage in by the circuit burns out, the reliable operating performance of electromagnetic valves equipment has been improved, it provides effectual guarantee to produce for the blast furnace is normal, and need not frequently change auxiliary relay again, the enterprise's plant use cost is greatly reduced.
Description
Technical field
The utility model relates to the auxiliary reclay protective gear in blast fumance in solenoid valve control circuit.
Background technique
In current used solenoid valve control circuit, mutually connect with the normally opened contact of auxiliary reclay for valve opening or the pass electromagnetic valve coil of valve, electromagnetic valve coil both end voltage is 24V, when solenoid valve control circuit conducting or shutoff in a flash, according to Lenz's law, instantaneous induced voltage can be produced in solenoid valve control circuit, at this moment the voltage when induction voltage ratio in circuit normally works often exceeds doubly a lot, the normally opened contact of the auxiliary reclay in circuit is so often caused to be burned, after the normally opened contact of auxiliary reclay is burned, operator cannot pass through solenoid valve control circuit Controlling solenoid valve switch again, thus buried hidden danger for the safety in production of blast furnace, and frequent auxiliary reclay of changing also considerably increases enterprise's production and application cost.
Model utility content
The purpose of this utility model is to provide a kind of auxiliary reclay protective gear that can effectively prevent the normally opened contact of the auxiliary reclay in solenoid valve control circuit to be burned.
For achieving the above object; the utility model have employed following technological scheme: the auxiliary reclay protective gear in described solenoid valve control circuit; comprise electromagnetic valve coil and auxiliary reclay; the normally opened contact of described electromagnetic valve coil and auxiliary reclay is in series; at the two ends of electromagnetic valve coil, at least reverse parallel connection has one group of diode group, often organizes diode group and at least comprises a diode.
Further, the auxiliary reclay protective gear in aforesaid solenoid valve control circuit, wherein: mutually connect between neighboring diode group.
Further, the auxiliary reclay protective gear in aforesaid solenoid valve control circuit, wherein: have two groups of diode groups at the two ends reverse parallel connection of electromagnetic valve coil, often organizes diode group and comprises two diodes.
Further; auxiliary reclay protective gear in aforesaid solenoid valve control circuit; wherein: between neighboring diode group, be provided with connecting circuit; the two ends of connecting circuit are connected with the circuit between two diodes often organizing diode group respectively, and neighboring diode group is connected mutually by connecting circuit.
By the enforcement of technique scheme, the utility model has the advantages that: after this auxiliary reclay protective gear comes into operation, the induced voltage that solenoid valve control circuit produces can not again through auxiliary reclay, but by protective circuit approach exhaustion that electromagnetic valve coil and diode group are formed, even if some shorted diode or open circuit, protective action is effective equally, the normally opened contact that so just effectively prevent auxiliary reclay is burnt out by the induced voltage in circuit, improve the reliable operation performance of electromagnetic valve equipment, normally produce for blast furnace and provide effective guarantee, and frequently need not change auxiliary reclay again, greatly reduce enterprise's production and application cost.
Accompanying drawing explanation
Fig. 1 is the working principle schematic diagram of the auxiliary reclay protective gear in solenoid valve control circuit described in the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, auxiliary reclay protective gear in described solenoid valve control circuit, comprise electromagnetic valve coil 1 and auxiliary reclay 2, described electromagnetic valve coil 1 is in series with the normally opened contact 3 of auxiliary reclay 2, at the two ends of electromagnetic valve coil 1, at least reverse parallel connection has one group of diode group, often organize diode group and at least comprise a diode 4, in the present embodiment, two groups of diode groups are had at the two ends reverse parallel connection of electromagnetic valve coil 1, often organize diode group and comprise two diodes, like this while effectively reducing enterprise's production and application cost, can effectively prevent the normally opened contact 3 of auxiliary reclay 2 from being burnt out by the induced voltage in circuit, in the present embodiment, connecting circuit 5 is provided with between neighboring diode group, the two ends of connecting circuit 5 are connected with the circuit between two diodes often organizing diode group respectively, neighboring diode group is connected mutually by connecting circuit 5, the quantity of the protective circuit that electromagnetic valve coil 1 is formed with diode can be increased like this, prevent the normally opened contact 3 of auxiliary reclay 2 from being burnt out by the induced voltage in circuit further, and each protective circuit comprises two diodes, reliability and stability is higher.The utility model has the advantages that: after this auxiliary reclay protective gear comes into operation, the induced voltage that solenoid valve control circuit produces can not again through auxiliary reclay contact, but by protective circuit approach exhaustion that electromagnetic valve coil and diode group are formed, even if some shorted diode or open circuit, protective action is effective equally, the normally opened contact that so just effectively prevent auxiliary reclay is burnt out by the induced voltage in circuit, improve the reliable operation performance of electromagnetic valve equipment, normally produce for blast furnace and provide effective guarantee, and frequently need not change auxiliary reclay again, greatly reduce enterprise's production and application cost.
Claims (4)
1. the auxiliary reclay protective gear in solenoid valve control circuit; comprise electromagnetic valve coil and auxiliary reclay; the normally opened contact of described electromagnetic valve coil and auxiliary reclay is in series; it is characterized in that: at least reverse parallel connection has one group of diode group at the two ends of electromagnetic valve coil, often organize diode group and at least comprise a diode.
2. the auxiliary reclay protective gear in solenoid valve control circuit according to claim 1, is characterized in that: mutually connect between neighboring diode group.
3. the auxiliary reclay protective gear in solenoid valve control circuit according to claim 1, is characterized in that: have two groups of diode groups at the two ends reverse parallel connection of electromagnetic valve coil, often organizes diode group and comprises two diodes.
4. the auxiliary reclay protective gear in solenoid valve control circuit according to claim 3; it is characterized in that: between neighboring diode group, be provided with connecting circuit; the two ends of connecting circuit are connected with the circuit between two diodes often organizing diode group respectively, and neighboring diode group is connected mutually by connecting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520446886.2U CN204805683U (en) | 2015-06-26 | 2015-06-26 | Auxiliary relay protection device among solenoid valve control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520446886.2U CN204805683U (en) | 2015-06-26 | 2015-06-26 | Auxiliary relay protection device among solenoid valve control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204805683U true CN204805683U (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520446886.2U Active CN204805683U (en) | 2015-06-26 | 2015-06-26 | Auxiliary relay protection device among solenoid valve control circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN204805683U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989859A (en) * | 2015-06-26 | 2015-10-21 | 江苏永钢集团有限公司 | Intermediate relay protection device in electromagnetic valve control circuit |
-
2015
- 2015-06-26 CN CN201520446886.2U patent/CN204805683U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989859A (en) * | 2015-06-26 | 2015-10-21 | 江苏永钢集团有限公司 | Intermediate relay protection device in electromagnetic valve control circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |