CN203367979U - Gas monitoring and blocking system for tunnel construction - Google Patents
Gas monitoring and blocking system for tunnel construction Download PDFInfo
- Publication number
- CN203367979U CN203367979U CN 201320425153 CN201320425153U CN203367979U CN 203367979 U CN203367979 U CN 203367979U CN 201320425153 CN201320425153 CN 201320425153 CN 201320425153 U CN201320425153 U CN 201320425153U CN 203367979 U CN203367979 U CN 203367979U
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- gas
- feeding switch
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Abstract
The utility model discloses a gas monitoring and blocking system for tunnel construction. The gas monitoring and blocking system comprises an intelligent gas monitoring circuit, a feeding switch, a gas manual feeding circuit and monitored devices, wherein the feeding switch is respectively connected with the intelligent gas monitoring circuit, the gas manual feeding circuit and the monitored devices, the feeding switch is connected with a power supply, and the intelligent gas monitoring circuit comprises a gas probe connected with a gas breaker which is connected with the feeding switch, and the gas probe is placed on a work surface. When the gas monitoring and blocking system is in use, the intelligent gas monitoring circuit, once detected that the gas turbidity exceeds a preset value, rapidly operates the feeding switch to prevent the feeding switch from being closed or supplying power. When the gas turbidity is lower than the preset value set by gas manual feeding circuit, the gas manual feeding circuit closes the feeding switch to power the monitored devices and allow the monitored devices to work normally.
Description
Technical field
The utility model relates to the combustible gas monitoring field, specifically, is a kind of gas monitor block sytem that is applied to constructing tunnel.
Background technology
Gas is the initial stage of archaeophyte at the accumulation coal-forming, and cellulose and the organic effect through anaerobic bacteria decomposition form.In the environment of high temperature, high pressure, in coal-forming, due to the physics and chemistry effect, continue to generate gas.Gas is gas colourless, tasteless, odorless, but sometimes can smell the fragrance of similar apple, and this is the cause of simultaneously gushing out with gas due to aromatic hydrocarbon gas.Gas is 0.554 to the relative density of air, and under standard state, the density of gas is 0.716kg, and the penetrating power of gas is 1.6 times of air, be insoluble in water, not combustion-supportingly can not maintain breathing, while reaching finite concentration, can make the people suffocate because of anoxic, and burning or blast can occur.Gas exists with free state and sorption state in coal body or country rock.
In the gas tunnel construction, in the coal measures location because improper ventilation or other reason, a large amount of methane accumulation is transfinited at short notice, now as the electric and plant equipment of operation, may ignite because the reasons such as electric leakage, short circuit, operation electric arc produce spark, actuation gas, and currently used gas-monitoring safety measure is, utilize gas detector to carry out after the comparison of gas turbidity just by manually carrying out the outage of power consumption equipment, thereby will cause like this outage accident of mine disaster to occur not in time.
The utility model content
The purpose of this utility model is to provide a kind of gas monitor block sytem that is applied to constructing tunnel, reasonable in design, can be in the situation that monitor gas exceeding limit, control the main switch power transmission of can not closing a floodgate by gas breaker timely, thereby having guaranteed construction and personal safety, is also while realizing gas exceeding limit and the blocking function of power supply main switch.
The utility model is achieved through the following technical solutions: a kind of gas monitor block sytem that is applied to constructing tunnel, comprise that gas intellectual monitoring circuit, feeding switch, the artificial feed circuit of gas and controlled device form, described feeding switch connects respectively gas intellectual monitoring circuit, the artificial feed circuit of gas and controlled device, described feeding switch connects power supply, described gas intellectual monitoring circuit connects gas breaker by the gas probe and is formed, described gas breaker connects feeding switch, and described gas probe is placed in working face.
During use, gas intellectual monitoring circuit surpasses preset value in the situation that monitor the turbidity of gas, just operate rapidly feeding switch, make its power transmission of can not closing a floodgate, when turbidity value that the gas turbidity sets lower than the artificial feed circuit of gas, artificial feed circuit just closes a floodgate and powers to controlled device by feeding switch, make its normal operation, the gas probe is placed in to Gas Outburst and the suitable place of working face, when detecting airborne gas turbidity and surpass the auto-breaking standard (turbidity is set as 1.5%) that gas breaker sets, gas breaker just cuts off the power supply of feeding switch to controlled device automatically.
The utility model in use, the artificial feed circuit of described gas mainly is comprised of gas turbidity comparator, described gas turbidity comparator connects feeding switch, when the turbidity of monitoring out gas by gas turbidity comparator as watt inspection person is less than predetermined value (turbidity is set as 1%), just can notify the feeding switch power transmission of being closed a floodgate, thus the controlled device normal operation.
In the utility model, described controlled device is comprised of controlled locking connection working face power supply for construction equipment, described controlled locking connection feeding switch.
In the utility model, described gas breaker model is the AXJ-2 type, utilize warning and the outage characteristic of AXJ-2 type gas breaker, cut off rapidly the power supply of feeding switch to controlled device in alert notice operative employee and Wa inspection person, thereby avoid the generation of accident.
In order better to realize the utility model, the model of described feeding switch is KBZ-400 or BKD9-400Z/1140, the KBZ-400 mining explosion-proof vacuum feeder switch, exchanging 50Hz, and rated voltage is 660V or 1140V, rated current is to the circuit of 400A, as master switch or the branch switch of electric power system, there is the protections such as overload, short circuit, under-voltage, gas leakage locking, also there is distant place shunted exciter tripping, when being used in conjunction with leakage relay, also there is earth leakage protective; The BKD9-400Z/1140 feeding switch has overload, short circuit, under-voltage, leakage latching protection.
When realizing the utility model, cable between each circuit is 3 * 70+1 * 35 type monitoring type shielded rubber cover copper core cable or 3 * 10+1 * 6 type copper-sheathed cables with the model specification of line, these two kinds of cables have high withstand voltage, high flame retardant, particularly 3 * 70+1 * 35 type monitoring type shielded rubber cover copper core cables have high hash shielding, are desirable hole, ore deposit signal-transmitting cables.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model is reasonable in design, can be in the situation that monitor gas exceeding limit, control the main switch power transmission of can not closing a floodgate by gas breaker timely, thereby guaranteed construction and personal safety, be also while realizing gas exceeding limit with the blocking function of power supply main switch.
(2) the utility model is simple in structure, utilization is arranged at the gas probe on working face, monitoring gas turbidity, the recycling gas breaker is judged and plays to report to the police and operate feeding switch and carry out the outage of controlled device, made accident of mine disaster such as not there will be gas explosion.
(3) the utility model also is provided with artificial gas turbidity monitoring simultaneously, carries out the comparison of gas turbidity in the situation that allow, and timely controlled device is powered.
(4) feeding switch of the present utility model and cable all adopt existing product on market, and its stability and practicality and validity can provide safeguard for the steady operation of this system.
The accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Wherein, the artificial feed circuit of 1-gas, the 2-working face, 3-gas probe, the 4-gas breaker, 5 ,-feeding switch, the 6-power supply, 7-working face power supply for construction equipment, 8-controls the locking circuit.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment:
A kind of gas monitor block sytem that is applied to constructing tunnel, as shown in Figure 1, mainly by feeding switch 5, connect respectively by gas probe 3 and connect the gas intellectual monitoring circuit that gas breaker 4 forms, operate by watt inspection person the artificial feed circuit 1 of gas that the gas comparator forms, the controlled device formed by the working face power supply for construction equipment 7 of controlling 8 connections of locking circuit, wherein, gas breaker 4, gas comparator and control locking circuit 8 all are connected on feeding switch 5, described feeding switch 5 connects power supply 6, described gas probe 3 is placed in working face 2.
During use, the gas probe is placed in to Gas Outburst and the suitable place of working face, when detecting airborne gas turbidity and surpass the auto-breaking standard (turbidity is set as 1.5%) that gas breaker sets, gas breaker just cuts off feeding switch automatically to being connected to the power supply of controlling the working face power supply for construction equipment on the locking circuit; When the turbidity of monitoring out gas by gas turbidity comparator as watt inspection person is less than predetermined value (turbidity is set as 1%), just can notify the feeding switch power transmission of being closed a floodgate, thus the controlled device normal operation.
When realizing the utility model, in order to make its effect better, described gas breaker 4 models are the AXJ-2 type, the model of described feeding switch 5 is KBZ-400 or BKD9-400Z/1140, cable between each circuit is 3 * 70+1 * 35 type monitoring type shielded rubber cover copper core cable or 3 * 10+1 * 6 type copper-sheathed cables with the model specification of line, wherein, utilize warning and the outage characteristic of AXJ-2 type gas breaker, cut off rapidly the power supply of feeding switch to controlled device in alert notice operative employee and Wa inspection person, thereby avoid dangerous generation; The KBZ-400 mining explosion-proof vacuum feeder switch, exchanging 50Hz, rated voltage is 660V or 1140V, rated current is to the circuit of 400A, as master switch or the branch switch of electric power system, there is the protections such as overload, short circuit, under-voltage, gas leakage locking, also there is distant place shunted exciter tripping, when being used in conjunction with leakage relay, also there is earth leakage protective; The BKD9-400Z/1140 feeding switch has overload, short circuit, under-voltage, leakage latching protection; 3 * 70+1 * 35 type monitoring type shielded rubber cover copper core cables or 3 * 10+1 * 6 type copper-sheathed cables have high withstand voltage, high flame retardant, particularly 3 * 70+1 * 35 type monitoring type shielded rubber cover copper core cables have high hash shielding, are desirable hole, ore deposit signal-transmitting cables.
The above; it is only preferred embodiment of the present utility model; not the utility model is done to any pro forma restriction, any simple modification, equivalent variations that every foundation technical spirit of the present utility model is done above embodiment, within all falling into protection range of the present utility model.
Claims (5)
1. a gas monitor block sytem that is applied to constructing tunnel, it is characterized in that: comprise gas intellectual monitoring circuit, feeding switch (5), the artificial feed circuit of gas (1) and controlled device form, described feeding switch (5) connects respectively gas intellectual monitoring circuit, the artificial feed circuit of gas (1) and controlled device, described feeding switch (5) connects power supply (6), described gas intellectual monitoring circuit connects gas breaker (4) by gas probe (3) and is formed, described gas breaker (4) connects feeding switch (5), described gas probe (3) is placed in working face (2).
2. a kind of gas monitor block sytem that is applied to constructing tunnel according to claim 1, it is characterized in that: the artificial feed circuit of described gas (1) mainly is comprised of gas turbidity comparator, and described gas turbidity comparator connects feeding switch (5).
3. a kind of gas monitor block sytem that is applied to constructing tunnel according to claim 1, it is characterized in that: described controlled device connects working face power supply for construction equipment (7) by controlled locking circuit (8) and forms, and described controlled locking circuit (8) connects feeding switch (5).
4. a kind of gas monitor block sytem that is applied to constructing tunnel according to claim 1, it is characterized in that: described gas breaker (4) model is the AXJ-2 type.
5. a kind of gas monitor block sytem that is applied to constructing tunnel according to claim 1, it is characterized in that: the model of described feeding switch (5) is KBZ-400 or BKD9-400Z/1140.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320425153 CN203367979U (en) | 2013-07-17 | 2013-07-17 | Gas monitoring and blocking system for tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320425153 CN203367979U (en) | 2013-07-17 | 2013-07-17 | Gas monitoring and blocking system for tunnel construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203367979U true CN203367979U (en) | 2013-12-25 |
Family
ID=49815698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320425153 Expired - Fee Related CN203367979U (en) | 2013-07-17 | 2013-07-17 | Gas monitoring and blocking system for tunnel construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203367979U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975635A (en) * | 2019-03-19 | 2019-07-05 | 光力科技股份有限公司 | A kind of methane electric locking function test method and system |
| CN114140989A (en) * | 2021-12-15 | 2022-03-04 | 晋能控股煤业集团有限公司 | Automatic gas leakage alarm processing device based on Internet of things system |
-
2013
- 2013-07-17 CN CN 201320425153 patent/CN203367979U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975635A (en) * | 2019-03-19 | 2019-07-05 | 光力科技股份有限公司 | A kind of methane electric locking function test method and system |
| CN109975635B (en) * | 2019-03-19 | 2021-09-07 | 光力科技股份有限公司 | Methane electric locking function test method and system |
| CN114140989A (en) * | 2021-12-15 | 2022-03-04 | 晋能控股煤业集团有限公司 | Automatic gas leakage alarm processing device based on Internet of things system |
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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 |
Granted publication date: 20131225 Termination date: 20150717 |
|
| EXPY | Termination of patent right or utility model |