CN1023051C - Communication central exchange - Google Patents
Communication central exchange Download PDFInfo
- Publication number
- CN1023051C CN1023051C CN91106024A CN91106024A CN1023051C CN 1023051 C CN1023051 C CN 1023051C CN 91106024 A CN91106024 A CN 91106024A CN 91106024 A CN91106024 A CN 91106024A CN 1023051 C CN1023051 C CN 1023051C
- Authority
- CN
- China
- Prior art keywords
- output
- control board
- underground
- power
- resistance
- 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
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Filters And Equalizers (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention provides a common-intrinsically safe scheduling communication control board used for mining, which has the technical key point that a new technical scheme is put forward by limiting the electrical parameters of a circuit so as to further limit discharging spark energy on the basis of a common scheduling communication control board. The present invention can realize electrical explosion protection; compared with the common scheduling communication control board, the common-intrinsically safe scheduling communication control board used for mining can be used underground in a coal mine, and be directly connected with an underground intrinsically safe telephone so as to facilitate scheduling personnel to directly command in the forefront underground. The control board is favorable to underground production; meanwhile, the present invention has the advantages of cable saving in large quantities and suitability for the underground use in the coal mine.
Description
The invention belongs to a kind of dispatching communication exchange, particularly communication central exchange.
Electric spark under the coal mine, electric arc and red-hot be the main incendiary source that causes gas explosion.Therefore, the explosion-proof problem of underground coal mine electrical equipment is occupied crucial status in Safety of Coal Mine Production.Up to the present, electrical apparatus for explosive atmospheres, major part is that the isolation burning things which may cause a fire disaster is the flame-proof type of explosion-proof means, and be explosion-proof means to suppress and to weaken burning things which may cause a fire disaster, be that essential safe type (hereinafter to be referred as intrinsic safety type) electric equipment is also not long in the history of China's coal-mine down-hole application, the kind of product and range of application are all very limited.
The total machine equipment of common dispatching communication of colliery use now, neither flame-proof type, neither intrinsic safety type.Therefore all the dispatching communication exchange is placed on aboveground ground usually, originally installing a telephone with the down-hole by coupler is connected.This problem of bringing is; 1, exchange and down-hole distance need a large amount of cables; 2, since exchange aboveground, the dispatcher can't understand, command the production of down-hole one line.
The purpose of this invention is to provide a kind of communication central exchange, this exchange is placed the down-hole, overcome above-mentioned 2 deficiencies.
Total design of the present invention is: by the electric parameter of restricting circuits, and then restriction discharge spark energy, realize electrical explosion proof.Based on above-mentioned total design, the present invention has proposed following modification on the basis of common dispatching communication exchange;
1. power unit; At the output of bridge circuit, seal in two resistance R 1, R2, its effect is a current limliting.One of filter capacitor C1 terminates between R1 and the R2, the other end of C1 is connected on another terminal of power output end, and R2 also plays and reduces the influence of filter capacitor C1 to intrinsically safe circuit, and the output of power supply also and meet voltage stabilizing didoe D2, with regulated output voltage, unlikely rising.
2. power pack: the cancellation relay, change choking coil L, two current-limiting resistance R3, R4 connects with the internal resistance of choking coil respectively, in current supply circuit, also seal in signal lamp, originally install a telephone in order to indication and call out to exchange, and do the conversation supervision.
3. ring part; Audio frequency output is adopted in ring, promotes the acoustic generator ring of originally installing a telephone.Adopt 555 integrated packages as vibration source here, output stage is recommended with two triodes, through transformer output, can also play buffer action.On the output of transformer secondary winding, seal in resistance and play metering function.
The present invention compared with prior art, owing to limited the electric parameter of circuit, and then suppress and weaken to provide the electric spark energy, thereby realized electrical explosion proof, being fit to the down-hole uses, with the directly networking of originally installing a telephone of down-hole, be convenient to the dispatcher and come to down-hole first line personally and directly command, help downhole production.Saved simultaneously a large amount of cables again.
Further specify the present invention below in conjunction with accompanying drawing.
Accompanying drawing is an intrinsic safety part electrical schematic diagram of the present invention.
Power unit; At the output of bridge circuit, seal in two resistance R 1, R2, its resistance is 20 Ω respectively, and effect is a current limliting.In the middle of R1 and R2, and meet filter capacitor C1, its appearance value is 3300 μ f.Voltage-stabiliser tube D2 regulated output voltage.
Power pack; The internal resistance of choking coil L is 300 Ω, and the resistance of R3 and R4 is respectively 120 Ω.The signal lamp that seals in the current supply circuit is light-emitting diode D3.
The ring part; Adopt 555 integrated packages as vibration source, output stage is recommended with two triodes, through transformer B2 output, can also play buffer action.At the output of the secondary winding of transformer, seal in the resistance R 5 of 300 Ω, carry out current limliting.
Claims (2)
1, a kind of essential safe type dispatching communication exchange, it is improvement to common dispatching communication exchange, it partly is made up of power unit, power pack, dispatching desk conversation part, operator circuit part and ring, it is characterized in that: the circuit to above-mentioned power unit, power pack and ring part has been done modification;
(1), power unit: at the output of bridge circuit, seal in two resistance R 1, R2, one of filter capacitor C1 terminates between R1 and the R2, and the other end of C1 is connected on another terminal of power output end, and the output of power supply also and meet voltage stabilizing didoe D2;
(2), power pack: cancel relay, change choking coil L, two current-limiting resistance R3, R4 connect with the internal resistance of choking coil respectively, in current supply circuit, also seal in signal lamp;
(3), ring part: adopt 555 integrated packages as vibration source, output stage is recommended with two triodes, through transformer output, on the output of transformer secondary winding, seals in resistance.
2, essential safe type dispatching communication exchange according to claim 1 is characterized in that; The signal lamp of power pack is a light-emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91106024A CN1023051C (en) | 1991-01-29 | 1991-01-29 | Communication central exchange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91106024A CN1023051C (en) | 1991-01-29 | 1991-01-29 | Communication central exchange |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1063787A CN1063787A (en) | 1992-08-19 |
| CN1023051C true CN1023051C (en) | 1993-12-08 |
Family
ID=4907463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91106024A Expired - Fee Related CN1023051C (en) | 1991-01-29 | 1991-01-29 | Communication central exchange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1023051C (en) |
-
1991
- 1991-01-29 CN CN91106024A patent/CN1023051C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1063787A (en) | 1992-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201813628U (en) | Mine explosion-proof and intrinsically safe control box | |
| CN1023051C (en) | Communication central exchange | |
| CN201412794Y (en) | Explosion suppression intrinsically-safe type LED lighting lamp | |
| CN210422842U (en) | Starting device for mining explosion-proof diesel locomotive | |
| CN202143053U (en) | Mining intrinsic safe pilot circuit | |
| CN103885343A (en) | Wireless gateway device with explosion suppression and electromagnetic shielding function | |
| CN2613003Y (en) | Gas monitoring explosion-proof magnetic starter | |
| CN203376666U (en) | Explosion-proof computer having controller area network (CAN) bus and bluetooth communication function for coal mine | |
| CN210181453U (en) | Control device for air horn of mining explosion-proof locomotive | |
| CN214851000U (en) | Mining intrinsically safe IO signal device | |
| CN212208003U (en) | Multifunctional mine vehicle-mounted methane outage appearance host computer | |
| CN220914998U (en) | Wireless charging device of remote controller | |
| CN220511286U (en) | Mining flame-proof type LED roadway signal lamp | |
| CN210606616U (en) | Mining intrinsically safe voice programmable circuit | |
| CN212413169U (en) | Mining broadcast communication system | |
| CN205089650U (en) | Explosion -proof fan structure | |
| CN201278107Y (en) | Intelligent control switch for local ventilation system | |
| CN205016992U (en) | Safe type guide control circuit of mining essence | |
| CN201838988U (en) | Special anti-explosion electric equipment | |
| CN214480241U (en) | Flame-proof type vector frequency converter | |
| CN202267853U (en) | Explosion-proof/intrinsicallysafe type programmable controller for mine | |
| CN212927947U (en) | Super-long power supply device | |
| CN101419444B (en) | Intelligent control switch for local ventilation system | |
| CN209980453U (en) | Intrinsic safety type explosion-proof remote control device | |
| CN201044127Y (en) | Novel power carrier control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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 |