CN210068244U - Gas remote monitoring and alarm system in tunnel construction process - Google Patents
Gas remote monitoring and alarm system in tunnel construction process Download PDFInfo
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- CN210068244U CN210068244U CN201920739286.3U CN201920739286U CN210068244U CN 210068244 U CN210068244 U CN 210068244U CN 201920739286 U CN201920739286 U CN 201920739286U CN 210068244 U CN210068244 U CN 210068244U
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Abstract
The utility model belongs to tunnel construction safety precaution field discloses a gas remote monitoring and alarm system in tunnel construction process, include: the system comprises a monitoring center, substations, input equipment and output equipment; the monitoring center comprises a monitoring host and a data interface switch; the input end of the monitoring host is connected with the output end of the data interface switch; the input equipment comprises a video monitoring camera and a gas sensor; the output end of the video monitoring camera and the output end of the gas sensor are connected with the input end of the substation; the output end of the substation is connected with the input end of the data interface switch; the output equipment comprises an audible and visual alarm and a feed power-off instrument; the input end of the audible and visual alarm and the input end of the feed power-off instrument are connected with the output end of the monitoring host. The utility model discloses in subway tunnel excavation process, can real-time supervision tunnel gas concentration, help avoiding the potential safety hazard that gas concentration is too high to bring to provide the guarantee for personnel's safe construction and management.
Description
Technical Field
The utility model belongs to tunnel construction safety precaution field, more specifically relates to a gas concentration monitoring method and personnel safety management system in tunnel construction process.
Background
With the implementation of the western major development strategy in China in recent years, a large number of railways, highway tunnels and hydroelectric diversion tunnels begin to emerge, more and more high-gas tunnels are encountered in the process, gas disasters are one of the major potential safety hazards in tunnel construction at present, and gas explosion is the most common and most harmful.
At present, no system is formed for monitoring gas tunnels at home and abroad, and a gas monitoring system in coal mine production is mostly and directly adopted in the construction of a large number of gas tunnels. The gas monitoring in traffic tunnel is given first place to artifical monitoring, carries check out patrol at each monitoring point in building site by testing personnel promptly, can not guarantee comprehensive, real-time control to testing personnel also can't carry out real-time accurate monitoring in some dangerous districts, cause easily to leak to survey and cause the gas disaster accident.
Therefore, it is necessary to construct a real-time and networked gas monitoring system during the construction of the gas tunnel.
SUMMERY OF THE UTILITY MODEL
To the above defect of prior art or improve the demand, the utility model provides a gas remote monitoring and alarm system in tunnel construction process, its aim at carries out gas monitoring through gas sensor to gather the monitoring situation to the surveillance center in real time through the substation, look over through the surveillance center, replace artifical monitoring from this, realize comprehensive, the real-time detection of gas in the tunnel construction process, reduce the potential safety hazard.
In order to achieve the above object, according to the utility model discloses an aspect provides a gas remote monitoring and alarm system in tunnel construction process, include: the system comprises a monitoring center, substations, input equipment and output equipment;
the monitoring center comprises a monitoring host and a data interface switch; the input end of the monitoring host is connected with the output end of the data interface switch;
the input equipment comprises a video monitoring camera and a gas sensor; the output end of the video monitoring camera and the output end of the gas sensor are connected with the input end of the substation;
the output end of the substation is connected with the input end of the data interface switch;
the output equipment comprises an audible and visual alarm and a feed power-off instrument; the input end of the audible and visual alarm and the input end of the feed power-off instrument are connected with the output end of the monitoring host.
Further, the gas sensor includes CH4Sensor, H2S sensor, CO sensor and CO2At least one of the sensors.
Further, the output device further comprises an LED display screen, and the input end of the LED display screen is connected with the monitoring host.
Further, the LED display screen is a dot matrix LED panel.
Further, the LED display screen is a red light dot matrix LED panel.
Furthermore, the input device also comprises a portable terminal, wherein the portable terminal integrates a positioning instrument, an alarm and a communicator and is connected with the monitoring center through the substation or directly connected with the monitoring center.
Further, the portable terminal accurately positions the card for the person.
Further, the monitoring host is provided with a UPS power supply and a power supply lightning arrester.
Further, the output device also comprises a printer, and an input port of the printer is connected with an output port of the monitoring host.
The basic principle of the utility model lies in that, because gas leakage generally appears in face excavation process and in the dead time after the excavation, consequently can arrange gas sensor and video surveillance camera head in advance at appointed monitoring position before the construction, and arrange monitoring center in the place of keeping away from monitoring position, through substation and data interface switch, with gas sensor, video surveillance camera head links to each other with monitoring center, found a real-time gas monitoring network, then carry out automatic gas monitoring in tunnel construction process, and directly look over the tunnel situation in real time through monitoring center, thereby can gain following beneficial effect:
1) aiming at key points of tunnel construction or dangerous areas which are difficult to reach through manual detection, such as a tunnel face excavation area, a two-lining trolley working area and the like, the method can directly carry out real-time monitoring for 24 hours through a gas sensor, timely master the gas exceeding condition caused by gas inflow in tunnel excavation through a monitoring center, timely give an alarm through an audible and visual alarm, and carry out power failure on electrical equipment in the dangerous areas through a feed power failure instrument, thereby ensuring the safe evacuation of constructors and avoiding serious disasters caused by gas leakage, explosion and the like;
2) through the feed outage appearance, in time stop the operation of electrical equipment under the gas concentration overproof state, get rid of the hidden danger that causes the gas explosion, implement the safety control.
3) Can observe the tunnel construction condition in real time through the video surveillance camera head to, the locater through the video surveillance camera head combination portable terminal can be real-time, the accurate operating personnel condition of mastering, is favorable to the administrator to carry out more accurate and safe management to the operating personnel.
4) Through the alarm and the communicator of the portable terminal, the operation personnel can communicate with the monitoring or management personnel of the monitoring center in real time, send and receive alarm information, and the monitoring center can timely inform the operation personnel of evacuation and timely call for help from the monitoring center when the operation personnel meet danger.
Drawings
Fig. 1 is the utility model discloses a tunnel construction gas monitoring and personnel safety control system's frame diagram.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the utility model discloses gas remote monitoring and alarm system in the tunnel construction process of preferred embodiment mainly includes following four parts: the system comprises a monitoring center, substations, input equipment and output equipment.
A gas monitoring central station is established at the tunnel portal, and a monitoring host, a power supply arrester, a UPS (uninterrupted power supply) and a data interface exchanger are arranged in the gas monitoring central station. And output equipment is also arranged at the tunnel portal and comprises an LED display screen, a printer, an audible and visual alarm device and a feed breaker. The LED display screen is arranged at the tunnel portal and displays the gas condition, CH, in the tunnel in real time4Concentration, H2S concentration, CO2The concentration can be displayed on the LED display screen in a rolling mode. In order to facilitate watching, a dot matrix panel is adopted for displaying, and a red light LED panel is adopted for displaying, so that the construction gas can be conveniently displayed and monitored.
In addition, a large-screen television wall can be configured in a background scheduling center, monitoring data received by the monitoring center is received and displayed in a wireless or wired transmission mode, and a multimedia safety production comprehensive scheduling command system integrating sensor monitoring data, video monitoring images, on-site sound acquisition and voice communication is formed.
The input equipment comprises a gas sensor, a video monitoring camera and a portable terminal. The gas sensor comprises CH4、H2S、CO、CO2And the sensors are respectively arranged on the tunnel face, the two lining trolleys and the air return place. The portable terminal is equipped for workers, and the video monitoring camera is installed in the tunnel, so that the conditions of the workers and the tunnel can be monitored in real time. The portable terminal integrates a positioning instrument, an alarm and a communicator, and is connected with the monitoring center through the substation or directly connected with the monitoring center, so that the monitoring center can master the position of a worker in real time, and can communicate and send an alarm at any time. Preferably, the portable terminal employs a KJ series of people accurate locator cards, such as KJ271-K, KJ936-F and the like, the set of locator cardsThe functions of positioning and sound-light alarming are realized, bidirectional transmission can be realized, and emergency call for help, low card power alarming, calling of a card holder and positioning of the card holder can be realized.
The installation position, the number and the type of each sensor can be freely tested and adjusted by operators according to the actual construction environment. For example, CH may be installed at the excavation face, the two-lined trolley, and the return air flow 20m4Sensor, preferably, CH4The hanging distance of the sensor from the top is not more than 30cm, the distance from the sensor to the two sides of the tunnel is not less than 20cm, and no obstacle can be generated within 0.5m of windward flow and leeward flow.
H is installed in excavated tunnel face and return air flow2S sensor, CO2A sensor, a CO sensor. H2S sensor and CO2The sensor is required to be 1.5m on the left or right side below the tunnel face operating trolley. The CO sensor is required to be suspended by no more than 30cm at the left side or the right side above the tunnel face operation trolley and at the lower part of the tunnel top.
The advantage of adopting the substation to arrange lies in, when the construction section is longer in the tunnel, the monitoring point can be far away at the interval, can arrange a substation at every monitoring point, connects the video surveillance camera head and the gas sensor of this monitoring point to through the transfer station of substation as portable terminal and surveillance center communication, avoid the staff to lead to the communication to break off far away from the surveillance center. The substation is a microcomputer device with an embedded chip as a core, can be connected with various sensors in a hanging mode, can continuously monitor various underground environmental parameters such as gas, wind speed and the like, and has a multi-channel and multi-system signal acquisition function and a communication function. The utility model discloses preferred substation model is KJ90NA, and the signal of gathering by input device is received to the substation, through the logic transform, output control signal passes through, power off control to the control object through the outage ware.
The following explains the method of use of the present invention:
when the system works, the input equipment firstly starts to work, the monitoring camera, the locator and the sensors transmit the environment condition and the personnel condition of the tunnel to the substation, and the monitoring center station is connected with the substation through the data interface converter to receive information in the substation. The tunnel gas concentration condition can be displayed on an LED display screen or a monitor of the monitoring host in real time, and the audible and visual alarm and the feed breaker can be controlled through the monitoring host. The monitoring information can be printed by a printer according to the requirement.
In addition, a manager of the monitoring center can control the work of the feed circuit breaker and the audible and visual alarm according to different environmental index requirements, communicate with the portable terminal and schedule workers in the tunnel. For example, when a monitoring point detects that the gas concentration exceeds 1%, the power supply of the non-intrinsic safety type electrical equipment in a gas concentration overrun area (such as the area near a motor, a transformer, the vicinity of an electrical switch and the position of a cable joint) is cut off through a feed breaker.
When the gas concentration reaches an alarm value, the audible and visual alarm should send out audible and visual alarm signals as shown in tables 1 and 2. The monitoring center can take corresponding measures to deal with the risks.
TABLE 1 early warning Range of methane sensor
TABLE 2 early warning setting table for hydrogen sulfide and CO sensors
The gas concentrations and measures taken in tables 1 and 2 are merely schematic illustrations of the use of the present invention. It can be understood, at the in-service use the utility model discloses an in-process, the content should be formulated by the administrator according to current construction environment, construction operation standard and standard.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides a gas remote monitoring and alarm system in tunnel construction process which characterized in that includes: the system comprises a monitoring center, substations, input equipment and output equipment;
the monitoring center comprises a monitoring host and a data interface switch; the input end of the monitoring host is connected with the output end of the data interface switch;
the input equipment comprises a video monitoring camera and a gas sensor; the output end of the video monitoring camera and the output end of the gas sensor are connected with the input end of the substation;
the output end of the substation is connected with the input end of the data interface switch;
the output equipment comprises an audible and visual alarm and a feed power-off instrument; the input end of the audible and visual alarm and the input end of the feed power-off instrument are connected with the output end of the monitoring host.
2. The system of claim 1, wherein the gas sensor comprises CH4Sensor, H2S sensor, CO sensor and CO2At least one of the sensors.
3. The system for remotely monitoring and alarming gas in the tunnel construction process according to claim 1 or 2, wherein the output equipment further comprises an LED display screen, and the input end of the LED display screen is connected with the monitoring host.
4. The system of claim 3, wherein the LED display screen is a dot matrix LED panel.
5. The system for remotely monitoring and alarming gas in the tunnel construction process as claimed in claim 4, wherein the LED display screen is a red light dot matrix LED panel.
6. The system for remotely monitoring and alarming gas in the tunnel construction process according to claim 1 or 2, wherein the input device further comprises a portable terminal, and the portable terminal integrates a positioning instrument, an alarm and a communicator and is connected with the monitoring center through a substation or directly connected with the monitoring center.
7. The system of claim 6, wherein the portable terminal is a precise positioning card for personnel.
8. The system for remotely monitoring and alarming gas in the tunnel construction process according to claim 1 or 2, wherein the monitoring host is provided with a UPS power supply and a power supply lightning arrester.
9. The system for remotely monitoring and alarming gas in the tunnel construction process according to claim 1 or 2, wherein the output device further comprises a printer, and an input port of the printer is connected with an output port of the monitoring host.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920739286.3U CN210068244U (en) | 2019-05-21 | 2019-05-21 | Gas remote monitoring and alarm system in tunnel construction process |
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| CN201920739286.3U CN210068244U (en) | 2019-05-21 | 2019-05-21 | Gas remote monitoring and alarm system in tunnel construction process |
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| CN210068244U true CN210068244U (en) | 2020-02-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130989A (en) * | 2019-05-21 | 2019-08-16 | 华中科技大学 | Firedamp remote monitoring and alarm system during a kind of constructing tunnel |
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- 2019-05-21 CN CN201920739286.3U patent/CN210068244U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130989A (en) * | 2019-05-21 | 2019-08-16 | 华中科技大学 | Firedamp remote monitoring and alarm system during a kind of constructing tunnel |
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