CN102529726A - Combustible gas three-grade early warning system of diesel locomotive - Google Patents
Combustible gas three-grade early warning system of diesel locomotive Download PDFInfo
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- CN102529726A CN102529726A CN2010105901010A CN201010590101A CN102529726A CN 102529726 A CN102529726 A CN 102529726A CN 2010105901010 A CN2010105901010 A CN 2010105901010A CN 201010590101 A CN201010590101 A CN 201010590101A CN 102529726 A CN102529726 A CN 102529726A
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Abstract
The invention relates to a combustible gas three-grade early warning system of a diesel locomotive. The combustible gas three-grade early warning system of the diesel locomotive is characterized in that the combustible gas three-grade early warning is incorporated into a locomotive automatic control system and three-grade early warning detonation lower limit concentration values are respectively set; and the system comprises the following three-grade early warning steps of: 1) first-grade early warning: producing an acousto-optic early warning; 2) second-grade early warning: cutting off a locomotive auxiliary generator; meanwhile, closing a locomotive air compressor motor and a fuel pump motor, wherein a diesel engine gear pump oil feeding method is adopted in the locomotive; and 3) third-grade early warning: controlling the unloading of the locomotive by using the early warning system. A diesel engine gear pump driving gear is engaged with a timing gear at an output end of a diesel engine crankshaft. Compared with the prior art, the combustible gas three-grade early warning system of the diesel locomotive, provided by the invention, has the following advantages that: interlocked output is available between a multi-channel gas alarm controller, which is connected with multiple combustible gas detectors, and a locomotive control system so that the function of monitoring the concentration of the combustible gas in real time is realized; moreover, the three-grade early warning function of the locomotive can be automatically realized and the safety of the locomotive in operation is improved when the gas concentration gradually reaches the alarming limit.
Description
Technical field
The present invention relates to the railway locomotive field, relate in particular to three grades of forewarn systems of a kind of diesel locomotive fire gases.
Background technology
Benzene hydrogenation workshop section is an emphasis fire prevention unit of enterprise in the chemical enterprise, and the fire-protection rating of in its zone, carrying out the diesel locomotive of hauling operation is had higher requirement.Because each electrical motor of diesel locomotive is a DC machine, sparking easily, locomotive has under the situation of imflammable gas around, and being engaged in hauling operation has certain potential safety hazard.At present, man of domestic locomotive shop does not also have the fire protection requirement that the proven technique safeguard can accords with production to this, and combustable gas concentration is reported to the police and generally only limited to sound and light alarm.
Summary of the invention
The purpose of this invention is to provide three grades of forewarn systems of a kind of diesel locomotive fire gases, the fire gases early warning is brought in the locomotive autonomous cruise speed system, improve the safety of locomotive operation, thereby improve the fire-protection rating of diesel locomotive, satisfy the transportation-production demand.
For realizing above-mentioned purpose, the present invention realizes through following technical scheme:
Three grades of forewarn systems of diesel locomotive fire gases; Be that the fire gases early warning is brought in the locomotive autonomous cruise speed system; At first according to the content of the on-the-spot imflammable gas that provides in the safety evaluation report, set three grades of early warning lower flammable limit (LFL) concentration values respectively, its three grades of early warning steps are following:
1) reach 20%～50% of detonation value when combustable gas concentration, promptly during concentration expressed in percentage by volume 0.24～1.6V%, forewarn system sends the acousto-optic early warning, and the prompting bus attendant gets into the hazardous location;
2) when imflammable gas concentration continuation increase; Reach 50%～80% of detonation value, promptly during concentration expressed in percentage by volume 0.6～4.0V%, send the secondary early warning; Forewarn system cuts off the locomotive auxiliary generator; Close locomotive air compressor motor, fuel charger motor simultaneously, locomotive adopts diesel engine gear type pump fuel system, leans on self explosion-proof storage battery power supply, total reservoir air feed;
3) continue to increase when imflammable gas concentration, more than or equal to 80% of detonation value, promptly during concentration expressed in percentage by volume 0.96～6.4V%, send three grades of early warning, forewarn system control locomotive is driven and is carried.
Said gear type pump is parallelly connected with diesel-engine fuel blowback road, and the gear pump driven gear is meshed with the time gear of crankshaft of diesel engine mouth.
Compared with prior art; The invention has the beneficial effects as follows: have the multi-channel gas alarm controller and the output of locomotive control interlocking of a plurality of imflammable gas detectors; Realized function to the real-time monitoring of imflammable gas concentration on every side; And when gas concentration reached the warning limit gradually, locomotive can be realized three grades of warning functions automatically, improved the safety of locomotive operation.
Description of drawings
Fig. 1 is that multi-channel gas alarm controller of the present invention connects block diagram;
Fig. 2 is the fuel system for diesel engine scheme drawing.
Among the figure: 1-fuel tank 2-rough filter 3-shutoff valve 4-fuel charger 5-boiler check valve 6-fule heater 7-compression indicator 8-bypass disc 9-diesel engine 10-sump oil case 11-gear type pump 12-shutoff valve 13-shutoff valve 14-shutoff valve
The specific embodiment
Be described further below in conjunction with the accompanying drawing specific embodiments of the invention:
See Fig. 1; Three grades of forewarn systems of a kind of diesel locomotive fire gases; Be that the fire gases early warning is brought in the locomotive autonomous cruise speed system, at first according to the content of the on-the-spot imflammable gas that provides in the safety evaluation report, and in generator case, in the pneumatics cabinet, a plurality of imflammable gas detectors are set in the operator's compartment; The multi-channel gas alarm controller is set three grades of early warning lower flammable limit (LFL) concentration values respectively, and its three grades of early warning steps are following:
1) reach 20%～50% of detonation value when combustable gas concentration, promptly during concentration expressed in percentage by volume 0.24～1.6V%, forewarn system sends the early warning of acousto-optic one-level, and the prompting bus attendant gets into the hazardous location;
2, continue to increase when imflammable gas concentration, reach 50%～80% of detonation value, promptly during concentration expressed in percentage by volume 0.6～4.0V%; Forewarn system sends the secondary early warning signal; Forewarn system cuts off the locomotive auxiliary generator, closes locomotive air compressor motor, fuel charger electric motor loop simultaneously, and locomotive adopts diesel engine gear type pump fuel system; Lean on self explosion-proof storage battery power supply, total reservoir air feed, can keep the locomotive continuous operation 30 minutes;
3, continue to increase when imflammable gas concentration, more than or equal to 80% of detonation value, promptly during concentration expressed in percentage by volume 0.96～6.4V%, forewarn system sends three grades of early warning signals, and forewarn system control locomotive is driven and carried.
Seeing Fig. 2, is the fuel system for diesel engine scheme drawing, and fuel oil pumps through rough filter 2, shutoff valve 3, fuel charger 4, the boiler check valve 5 of two-way successively in the fuel tank 1; Behind 6 pairs of fuel heatings of fule heater, 9 work of fuel delivery diesel engine, system's internal pressure is shown by compression indicator 7; Bypass disc 8 keeps oil pressure steady, and diesel engine 9 downsides link to each other with sump oil case 10, and gear type pump 11 is parallelly connected with diesel-engine fuel pump 4 loops; Gear type pump 11 driven wheels are meshed with the time gear of diesel engine 9 crankshaft output ends, and gear type pump 11 oil inlets are connected with rough filter 2 oil outlets, and gear type pump 11 oil outlets are connected with diesel engine 9 oil outlets with diesel engine 9 oil inlets respectively; Shutoff valve 12 is located between the oil inlet of rough filter 2 oil outlets and gear type pump 11, and shutoff valve 13 is located between gear type pump 11 oil outlets and diesel engine 9 oil inlets, and shutoff valve 14 is located between gear type pump 11 oil outlets and diesel engine 9 oil outlets; When locomotive during at the safety zone normal starting, diesel engine 9 fuel oils are supplied with in 4 work of diesel-engine fuel pump; Diesel engine work; Diesel engine 9 starting back driven gear pump 11 work, the fuel oil of the fuel oil of gear type pump 11 outputs and fuel charger 4 outputs is incorporated into the power networks, after getting into the secondary early warning; Fuel charger 4 motors stop; But diesel engine 9 is accepted still normal operation of gear type pump 11 fuel feeding, thereby the needs of three grades of early warning of diesel locomotive fire gases have been satisfied in the safety that has improved locomotive operation.
Claims (2)
1. three grades of forewarn systems of diesel locomotive fire gases; It is characterized in that; Be that the fire gases early warning is brought in the locomotive autonomous cruise speed system; At first according to the content of the on-the-spot imflammable gas that provides in the safety evaluation report, set three grades of early warning lower flammable limit (LFL) concentration values respectively, its three grades of early warning steps are following:
1) reach 20%～50% of detonation value when combustable gas concentration, promptly during concentration expressed in percentage by volume 0.24～1.6V%, forewarn system sends the acousto-optic early warning, and the prompting bus attendant gets into the hazardous location;
2) when imflammable gas concentration continuation increase; Reach 50%～80% of detonation value, promptly during concentration expressed in percentage by volume 0.6～4.0V%, send the secondary early warning; Forewarn system cuts off the locomotive auxiliary generator; Close locomotive air compressor motor, fuel charger motor simultaneously, locomotive adopts diesel engine gear type pump fuel system, leans on self explosion-proof storage battery power supply, total reservoir air feed;
3) continue to increase when imflammable gas concentration, more than or equal to 80% of detonation value, promptly during concentration expressed in percentage by volume 0.96～6.4V%, send three grades of early warning, forewarn system control locomotive is driven and is carried.
2. three grades of forewarn systems of diesel locomotive fire gases according to claim 1 is characterized in that said gear type pump is parallelly connected with diesel-engine fuel blowback road, and the gear pump driven gear is meshed with the time gear of crankshaft of diesel engine mouth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105901010A CN102529726A (en) | 2010-12-15 | 2010-12-15 | Combustible gas three-grade early warning system of diesel locomotive |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105901010A CN102529726A (en) | 2010-12-15 | 2010-12-15 | Combustible gas three-grade early warning system of diesel locomotive |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0386495A2 (en) * | 1989-03-04 | 1990-09-12 | Bayerische Motoren Werke Aktiengesellschaft | Motor vehicle with a security system |
| CN2381553Y (en) * | 1999-08-17 | 2000-06-07 | 河北曲周县矿用防爆机械有限公司 | Explosionproof diesel tractive vehicle |
| JP2006079847A (en) * | 2004-09-07 | 2006-03-23 | Toyota Motor Corp | Gas leakage detection device |
| CN2849858Y (en) * | 2005-05-12 | 2006-12-20 | 高伟志 | Alarm for gas leakage on vehicle |
| CN201437732U (en) * | 2009-04-03 | 2010-04-14 | 中铁二局股份有限公司 | Power system for explosion-proof trackless gas tunnel transport machine |
| CN101726574A (en) * | 2009-12-04 | 2010-06-09 | 欧科佳（上海）汽车电子设备有限公司 | Combustible gas detection device applied to public transport vehicle |
| CN101825014A (en) * | 2010-04-22 | 2010-09-08 | 吉林长城机械制造有限公司 | Automatic protection device for coal mine explosion-proof diesel locomotive |
-
2010
- 2010-12-15 CN CN2010105901010A patent/CN102529726A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0386495A2 (en) * | 1989-03-04 | 1990-09-12 | Bayerische Motoren Werke Aktiengesellschaft | Motor vehicle with a security system |
| CN2381553Y (en) * | 1999-08-17 | 2000-06-07 | 河北曲周县矿用防爆机械有限公司 | Explosionproof diesel tractive vehicle |
| JP2006079847A (en) * | 2004-09-07 | 2006-03-23 | Toyota Motor Corp | Gas leakage detection device |
| CN2849858Y (en) * | 2005-05-12 | 2006-12-20 | 高伟志 | Alarm for gas leakage on vehicle |
| CN201437732U (en) * | 2009-04-03 | 2010-04-14 | 中铁二局股份有限公司 | Power system for explosion-proof trackless gas tunnel transport machine |
| CN101726574A (en) * | 2009-12-04 | 2010-06-09 | 欧科佳（上海）汽车电子设备有限公司 | Combustible gas detection device applied to public transport vehicle |
| CN101825014A (en) * | 2010-04-22 | 2010-09-08 | 吉林长城机械制造有限公司 | Automatic protection device for coal mine explosion-proof diesel locomotive |
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Application publication date: 20120704 |