CN205179015U - Multipleization of explosion -proof frequency converter safety interlocking protection system's logical interlock circuit - Google Patents
Multipleization of explosion -proof frequency converter safety interlocking protection system's logical interlock circuit Download PDFInfo
- Publication number
- CN205179015U CN205179015U CN201520658822.9U CN201520658822U CN205179015U CN 205179015 U CN205179015 U CN 205179015U CN 201520658822 U CN201520658822 U CN 201520658822U CN 205179015 U CN205179015 U CN 205179015U
- Authority
- CN
- China
- Prior art keywords
- circuit
- explosion
- protection system
- multipleization
- frequency converter
- 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
Links
Landscapes
- Electronic Switches (AREA)
Abstract
The utility model relates to an explosion -proof technique field, a disclosed multipleization of explosion -proof frequency converter safety interlocking protection system's logical interlock circuit, characterized by: include: not circuit, capacitor charging and discharging circuit, AND circuit, the not circuit passes through capacitor charging and discharging circuit and is connected with the AND circuit electricity, the not circuit is six opposition si mite triggers, the AND circuit is four group's stream input end AND circuits. The utility model discloses the multipleization safety interlocking protection system who constitutes can realize complicacy and accurate pre - protection, and factor of safety is high, the protection is reliable, it is convenient to upgrade. Not only can solve the potential safety hazard effectively, still have simultaneously detecting element standardization, passive online real -time detection, safe report to the police and body rong bixiao, installation safeguard the simplification can be well etc. Characteristics.
Description
Technical field
The utility model relates to explosion-proof technology field, especially relates to the logical interlock circuit of mine hoist by a kind of explosion-proof frequency converter multiplex safety interlocking protection system.
Background technology
At present, explosion-proof frequency converter is as a kind of novel energy-saving environment-friendly product, more and more general in the application in the inflammable and explosive property such as underground coal mine, dust atmosphere place.According to the technological requirement of mine hoist, also need to realize four quadrant running while speed governing.But, underground coal mine bad environments, hot and humid, and to space and safety requirements extremely harsh, explosion-proof frequency converter should realize flame proof to ensure safety, realizes frequency control performance again, to meet technological requirement and energy-saving index, temperature rise, EMC, reliability, installation and maintenance simplification, body hold the problems such as ratio, speed ratio and have become the short slab of product design, especially be applied in mine hoist occasion, if these short slabs process bad, very big hidden danger will be brought to Safety of Coal Mine Production.
Summary of the invention
In order to overcome the deficiency of the aspects such as the supervision of existing mine hoist explosion-proof frequency converter electric insulation, safety interlocking; easily cause it to there is many potential safety hazards, the utility model provides a kind of logical interlock circuit of explosion-proof frequency converter multiplex safety interlocking protection system.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A logical interlock circuit for explosion-proof frequency converter multiplex safety interlocking protection system, comprising: not circuit, capacitor charge and discharge circuit, AND circuit, described not circuit is electrically connected with AND circuit by capacitor charge and discharge circuit; Described not circuit is six these schmitt triggers anti-phase, and described AND circuit is four group of two input AND circuit.
Owing to adopting technical scheme as above, superiority of the present utility model is as follows:
A logical interlock circuit for explosion-proof frequency converter multiplex safety interlocking protection system, the multiplex safety interlocking protection system of composition, can realize complexity and protect in advance accurately, coefficient of safety is high, protection is reliable, upgrading is convenient.Effectively can not only solve potential safety hazard, also there is detecting unit standardization simultaneously, passive online real-time detection, security alarm and body hold than the feature such as little, the simple and easy performance of installation and maintenance is good.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the logical interlock circuit of protection system;
Fig. 2 is the IGBT multi-channel drive signal built-up circuit of protection system.
Embodiment
As shown in Figure 1, 2, the multi-channel drive signal built-up circuit of the explosion-proof frequency converter of mine hoist security interlocking protection, comprise: the first upper and lower bridge arm optical-electrical converter, the second upper and lower bridge arm optical-electrical converter, logical interlock circuit, instruction display circuit, multi-channel parallel signal transacting interface circuit, first upper and lower bridge arm optical-electrical converter of connection control circuit 11 is connected with multi-channel parallel signal transacting interface circuit by logical interlock circuit, and drive output, the signal input part of multi-channel parallel signal transacting interface circuit are connected with full-controlled switching element; The signal output part of multi-channel parallel signal transacting interface circuit is connected with control circuit 11 by instruction display circuit, the second upper and lower bridge arm optical-electrical converter; Wherein, the first upper and lower bridge arm optical-electrical converter output is connected with instruction display circuit;
Described logical interlock circuit, comprising: not circuit, capacitor charge and discharge circuit, AND circuit, and described not circuit is electrically connected with AND circuit by capacitor charge and discharge circuit; Described not circuit is six these schmitt triggers anti-phase, and described AND circuit is four group of two input AND circuit.
Claims (1)
1. a logical interlock circuit for explosion-proof frequency converter multiplex safety interlocking protection system, it is characterized in that: comprising: not circuit, capacitor charge and discharge circuit, AND circuit, described not circuit is electrically connected with AND circuit by capacitor charge and discharge circuit; Described not circuit is six these schmitt triggers anti-phase, and described AND circuit is four group of two input AND circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520658822.9U CN205179015U (en) | 2015-08-28 | 2015-08-28 | Multipleization of explosion -proof frequency converter safety interlocking protection system's logical interlock circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520658822.9U CN205179015U (en) | 2015-08-28 | 2015-08-28 | Multipleization of explosion -proof frequency converter safety interlocking protection system's logical interlock circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205179015U true CN205179015U (en) | 2016-04-20 |
Family
ID=55742943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520658822.9U Expired - Fee Related CN205179015U (en) | 2015-08-28 | 2015-08-28 | Multipleization of explosion -proof frequency converter safety interlocking protection system's logical interlock circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205179015U (en) |
-
2015
- 2015-08-28 CN CN201520658822.9U patent/CN205179015U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203433022U (en) | Electric energy meter terminal suite | |
| CN203503571U (en) | Breaker | |
| CN205179015U (en) | Multipleization of explosion -proof frequency converter safety interlocking protection system's logical interlock circuit | |
| CN202186817U (en) | Elevator door lock safety return circuit | |
| CN102545142B (en) | Adopt zero Firewire circuitry guard method of relay, circuit and device | |
| CN102638107B (en) | Grounding wire state signal acquisition device of transformer substation | |
| CN202499144U (en) | Mining locomotive control and measurement protecting device based on CAN bus | |
| CN209373192U (en) | A kind of fibre-optical splice box with leak water detdction | |
| CN206379626U (en) | A kind of intermediate switchgear cabinet insulation contact box | |
| CN201674015U (en) | Protected type connecting terminal strip | |
| CN105293222A (en) | Elevator car top box control device and elevator control system | |
| CN204244118U (en) | The reversible electromagnetic starter circuit structure of explosion-proof vacuum | |
| CN205178845U (en) | Double quick explosion -proof frequency converter box that opens door | |
| CN206060048U (en) | A kind of vertical type livewire work insulation lead wire temporary fastening device | |
| CN205178429U (en) | Cable arrangement structure of nuclear power plant's master -control room | |
| CN204424468U (en) | A kind of electrical connection arrangement of explosion-proof chamber | |
| CN205430096U (en) | Explosion -proof frequency converter earth leakage search/lockout detection circuitry for mine winder | |
| CN204205563U (en) | A kind of high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus | |
| CN205246239U (en) | Online temperature measuring device of plug -in type bus duct | |
| CN203675477U (en) | Protective door structure used for low-voltage cabinet | |
| CN203077470U (en) | Control device for concrete batching system | |
| CN204858291U (en) | Automatically controlled rack of electrical engineering transformer outgoing line intelligence | |
| CN202513564U (en) | Single-ended transient voltage protection device of ultra-high voltage direct current (DC) transmission line | |
| CN205232648U (en) | Add mechanism of qi central control unit | |
| CN105119533A (en) | Explosion-proof frequency converter electric leakage locking detection system for mine elevator and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20200828 |