CN107387276B - Automatic explosion-proof parallel air inlet system based on explosion-proof diesel vehicle - Google Patents
Automatic explosion-proof parallel air inlet system based on explosion-proof diesel vehicle Download PDFInfo
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- CN107387276B CN107387276B CN201710754447.1A CN201710754447A CN107387276B CN 107387276 B CN107387276 B CN 107387276B CN 201710754447 A CN201710754447 A CN 201710754447A CN 107387276 B CN107387276 B CN 107387276B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10275—Means to avoid a change in direction of incoming fluid, e.g. all intake ducts diverging from plenum chamber at acute angles; Check valves; Flame arrestors for backfire prevention
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/1015—Air intakes; Induction systems characterised by the engine type
- F02M35/10157—Supercharged engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/104—Intake manifolds
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses an automatic explosion-proof parallel type air inlet system based on an explosion-proof diesel vehicle, which comprises an air filter, a supercharger, an intercooler, an air inlet shutoff valve and an air inlet main pipe which are sequentially connected, wherein the air inlet main pipe is connected with an air inlet manifold; the first check valve and the second check valve are installed in opposite directions. The invention automatically switches between the normal working mode and the explosion-proof working mode according to whether flame is spread outwards, thereby increasing the charging efficiency and the air input. The special device is specially designed for dangerous places which can generate explosive gases or dust, and can be safely applied to industrial departments such as petroleum, chemical engineering, pharmacy, light textile, war industry, paint, pigment, coal and the like and places containing explosive mixtures such as ports, railways, goods yards, warehouses and the like for operation.
Description
Technical Field
The invention belongs to the technical field of explosion-proof diesel engines, and particularly relates to an automatic explosion-proof parallel air inlet system based on an explosion-proof diesel vehicle.
Background
With the development of the modern coal mining industry in China, the underground trackless rubber-tyred vehicle has the characteristics of strong adaptability, good maneuvering flexibility, safety and high efficiency due to no limitation of a track, and is being applied to more and more coal mine enterprises. However, the working space under the mine is relatively closed, and the rubber-tyred vehicle contains flammable and explosive gases such as methane, and is quite dangerous if being easily exploded in case of open fire, and the trackless rubber-tyred vehicle has the danger of becoming a potential ignition source. In the explosive dangerous places such as petrochemical industry places, oil depots and the like, the danger of pipeline damage gas leakage exists, when a common diesel vehicle enters the dangerous places, the common diesel vehicle is very likely to ignite and detonate surrounding dangerous gas to cause safety accidents, and therefore the diesel vehicle with explosion-proof requirements is used.
General technical condition MT990-2006 of the mining diesel engine stipulates that a flame arrester needs to be additionally arranged in an air inlet and outlet system of an explosion-proof rubber-tyred vehicle to eliminate possible generated flames.
Flame arresters used at the present stage mainly comprise an old-fashioned metal mesh flame arrester, a single-layer particle net-shaped structure flame arrester, a fence type flame arrester, a novel corrugated pipe type flame arrester, a honeycomb ceramic core flame arrester and the like. The existing air intake system of the explosion-proof diesel vehicle is directly additionally provided with a flame arrester, meets the explosion-proof requirement, simultaneously causes the reduction of air intake flow area, increases the resistance of the air intake system, is unsmooth in air intake, reduces the charge coefficient of the engine, reduces the air intake quantity, worsens the combustion of the engine, and causes the reduction of heat efficiency and the increase of harmful gas emission.
At present, the research on the air inlet system of the anti-explosion diesel vehicle mostly focuses on the research on the resistance characteristics of the air inlet flame arrester, such as the optimization of the air inlet flame arrester, the invention of a novel flame arrester structure and the like, and the research on the novel air inlet system of the anti-explosion diesel vehicle is less.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and solve the problem of large flow resistance of the air inlet system of the existing explosion-proof diesel vehicle, and provides an automatic explosion-proof parallel air inlet system based on the explosion-proof diesel vehicle. The system has a strong flame-retardant and explosion-proof function, and eliminates potential safety hazards caused by diesel vehicles working in dangerous gas places; the explosion-proof diesel vehicle air intake system reduces the flow resistance brought by a flame arrester in the traditional explosion-proof diesel vehicle air intake system while meeting the explosion-proof requirement, increases the air inflation efficiency and the air intake amount, improves the effective heat efficiency of an engine and reduces the emission of harmful gas.
The purpose of the invention is realized by the following technical scheme.
The automatic explosion-proof parallel type air inlet system based on the explosion-proof diesel vehicle comprises an air filter, a supercharger, an intercooler, an air inlet shutoff valve and an air inlet main pipe which are sequentially connected through a corrugated pipe, wherein the air inlet main pipe is connected with an air inlet manifold connected with an air cylinder, a parallel type air inlet branch pipe system is connected between the air filter and the supercharger and comprises a first branch pipe and a second branch pipe which are arranged in parallel, a first one-way valve is arranged on the first branch pipe, and a second one-way valve and a flame arrester are arranged on the second branch pipe; the installation directions of the first one-way valve and the second one-way valve are opposite, the inlet end of the first one-way valve is connected with an air filter, the outlet end of the second one-way valve is connected with the air filter, and the inlet end of the second one-way valve is connected with a flame arrester.
The first one-way valve and the second one-way valve are straight-through type pneumatic control one-way valves.
The flame arrester is explosion-proof parallel plate type flame arrester, the flame arrester includes left apron, support base and the right side apron that sets gradually from left to right, forms a cavity, be provided with the flame arrester original paper in the cavity, left side apron and right side apron pass through fastening bolt and connect, the left side apron all is provided with the expansion chamber with the right side apron outside to set up the ring flange respectively.
The flame arrester is characterized in that supports connected with the left cover plate and the right cover plate are arranged on two sides of the flame arrester respectively, and the supports are supporting plates connected with an engine body and matched with the outer surfaces of the left cover plate and the right cover plate.
The first branch pipe is a normal working mode path in which no flame propagates outwards in the air inlet system, and the second branch pipe is an explosion-proof working mode path in which flame propagates outwards in the air inlet system; in a normal working mode, the first branch pipe is in a circulation state, and the second branch pipe is in a closed state; under the explosion-proof mode of operation, first branch pipe is in the closed condition, and the second branch pipe is in the circulation state, and flame propagation is extinguished through the spark arrester.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
(1) The parallel inlet branch pipe system is adopted in the invention and comprises a first branch pipe and a second branch pipe which are arranged in parallel, wherein the first branch pipe is a normal working mode path in which no flame spreads outwards in the inlet system, and the second branch pipe is an explosion-proof working mode path in which flame spreads outwards in the inlet system, so that the parallel inlet branch pipe system can be rapidly and automatically switched between the normal working mode and the explosion-proof working mode according to whether flame exists in the inlet system.
(2) According to the parallel air inlet branch pipe system, the flame arrester is arranged on the second branch pipe, flame propagation is extinguished after passing through the flame arrester in an explosion-proof working mode, the system has a strong flame-retardant and explosion-proof function, flame propagation is prevented, and potential safety hazards caused by explosion-proof diesel vehicles working in dangerous gas places are eliminated;
(3) The invention has the advantages that the air inlet of the engine does not pass through the air inlet flame arrester in the normal working mode, the flow resistance brought by the flame arrester in the air inlet system of the traditional explosion-proof diesel vehicle is reduced, the air inlet amount is increased, the air charging efficiency is improved, the effective heat efficiency of the engine is improved, and the emission of harmful gas is reduced.
(4) The explosion-proof device has the advantages of simple structure, convenience in disassembly, lower cost, capability of meeting the explosion-proof requirement, great commercial value and wide popularization and application value.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a parallel intake manifold system of the present invention;
FIG. 3 is a schematic view of the construction of a flame arrestor of the present invention.
Reference numeral 1, an air cleaner; 2, a corrugated pipe; 3 parallel inlet branch system; 301 a first branch pipe; 302 a second branch pipe; 303 a first one-way valve; 304 a second one-way valve; 305 a flame arrestor; 3051 a left cover plate; 3052 a right cover plate; 3053 supporting the base; 3054 flame arrester element; 3055 fastening the bolt; 3056 expanding the lumen; 3057 a flange plate; 4, a supercharger; 5, an intercooler; 6 an air inlet shutoff valve; 7 an air inlet main pipe; 8 intake manifold.
Detailed Description
The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the present invention when taken in conjunction with the accompanying drawings. Like reference numerals refer to like parts throughout the drawings. The drawings are not intended to be to scale, emphasis instead being placed upon illustrating the principles of the invention. The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the automatic explosion-proof parallel type air inlet system based on the explosion-proof diesel vehicle comprises an air filter 1, a supercharger 4, an intercooler 5, an air inlet shutoff valve 6 and an air inlet main pipe 7 which are sequentially connected through a corrugated pipe 2, wherein the air inlet main pipe 7 is connected with a plurality of air inlet manifolds 8, the air inlet manifolds 8 correspond to cylinders one by one, and a parallel type air inlet branch pipe system 3 is connected between the air filter 1 and the supercharger 4.
The air filter 1 is mainly used for filtering impurities such as dust and the like in air sucked by an engine and providing clean air for an explosion-proof diesel engine. The parallel type air inlet branch pipe system 3 is connected with the air filter 1 through the corrugated pipe 2, is a main part of the automatic explosion-proof parallel type air inlet system of the explosion-proof diesel vehicle, and is divided into an air inlet branch pipe in a normal working mode and an air inlet branch pipe in an explosion-proof working mode. The compressor of the supercharger 4 is connected with the parallel air inlet branch pipe system 3 through the corrugated pipe 2, the compressor of the supercharger 4 compresses the filtered air, the flow speed and pressure of the sucked air are increased, the air inlet density and the air inlet amount are increased, the requirement of combustion of an engine combustion chamber on the oxygen amount is met, the combustion efficiency, the power and the charge coefficient of the engine are improved, and the emission of harmful gases is reduced. The intercooler 5 is connected with the compressor of the supercharger 4 through the corrugated pipe 2, the intercooler 5 adopts an air-air intercooler, the temperature of air after supercharging is effectively reduced, and the charging efficiency of the engine is improved, so that the power performance and the economic performance of the engine are improved. The air inlet shutoff valve 6 is connected with the intercooler 5 through the corrugated pipe 2, the air inlet shutoff valve 6 is in an open state in a normal working state, and fresh air flows into the air cylinder through the air inlet shutoff valve 6; when the explosion-proof diesel engine is abnormal and can not stop running, the air inlet shutoff valve 6 cuts off the air inlet of the diesel engine to force the explosion-proof diesel engine to stop running. Engine intake air is circulated into each cylinder through an intake manifold 7 and an intake manifold 8.
As shown in fig. 2, the parallel inlet manifold system 3 includes a first manifold 301 and a second manifold 302 arranged in parallel, and a first check valve 303 is arranged on the first manifold 301 and is a normal operating mode path in which no flame propagates outwards in the inlet system; a second one-way valve 304 and flame arrestor 305 are provided in the second branch 302 to provide an explosion-proof working mode path for the outward propagation of flames in the intake system. The first one-way valve 303 and the second one-way valve 304 are straight-through type pneumatic control one-way valves, and have a function of one-way circulation of air, and the first one-way valve 303 and the second one-way valve 304 are installed in opposite directions. The inlet end of the first one-way valve 303 is connected with the air filter 1 through a corrugated pipe 2, and the outlet end of the first one-way valve 303 is connected with the compressor of the supercharger 4 through the corrugated pipe 2. The outlet end of the second one-way valve 304 is connected with an air filter 1 through a corrugated pipe 2, the inlet end of the second one-way valve 304 is connected with the outlet end of a flame arrester 305 through the corrugated pipe 2, and the inlet end of the flame arrester 305 is connected with a compressor of a supercharger 4 through the corrugated pipe 2.
The parallel air inlet branch pipe system 3 is a main part of an automatic explosion-proof air inlet system, and has two working modes: (1) When there is no flame in the intake system, the normal operation mode is adopted, the first branch pipe 301 is in a flow state, and the second branch pipe 302 is in a closed state. When the pressure at the point P1 is greater than the pressure at the point P2, the first check valve 303 is opened, the first branch pipe 301 is in a flowing state, and when the pressure at the point P1 is less than the pressure at the point P2, the first check valve 303 is closed, and the first branch pipe 301 does not flow gas. (2) When flame exists in the air inlet system and propagates to the external environment, an explosion-proof working mode is adopted, the first branch pipe 301 is in a closed state, the second branch pipe 302 is in a circulating state, and the flame propagation is extinguished through the flame arrester 305. When the pressure at the point P4 is greater than the pressure at the point P5, the second check valve 304 is opened, the second branch pipe 302 is in a flowing state, and when the pressure at the point P4 is less than the pressure at the point P5, the second check valve 304 is closed, and the second branch pipe 302 does not flow gas. The two working modes can be rapidly and automatically switched according to whether flame is spread outwards in the air inlet system, so that the explosion-proof function is realized.
And (3) a normal working mode: in the normal operating mode of the engine, the gas circulation process is shown by the solid arrows in fig. 2. In the air inlet process of the engine, the pressure of a point P0 is greater than the pressure of a point P3, the air is divided into two paths through the parallel air inlet branch pipe system 3, the first path passes through a first branch pipe 301 of the parallel air inlet branch pipe system 3, the pressure of a point P1 is greater than the pressure of a point P2, a first one-way valve 303 is opened, and the inlet air enters the compressor of the supercharger 4 through the first branch pipe 301 of the parallel air inlet branch pipe system 3; the second way passes through the second branch pipe 302 of the parallel inlet branch pipe system 3, when the pressure at the point P5 is higher than the pressure at the point P4, the second one-way valve 304 is in a closed state, and no gas flows through the second branch pipe 302. Under the normal working mode, engine intake air enters a first branch pipe 301 of the parallel intake branch pipe system 3 through the air filter 1, passes through a first one-way valve 303, enters a compressor of the supercharger 4, is compressed by the compressor, enters the intercooler 5 to reduce the intake air temperature, enters the intake manifold 7 through the intake shutoff valve 6, and then flows into each cylinder through the intake manifold 8. In the normal working mode, the air inlet of the engine does not pass through the air inlet flame arrester 305, so that the flow resistance loss of the air is reduced, the air inlet amount is increased, the charging coefficient of the engine is improved, the heat efficiency of the engine is improved, and the emission of harmful gas is reduced.
An explosion-proof working mode: in the explosion-proof operation mode of the engine, the gas circulation process is shown by the dashed arrows in fig. 2. When deflagration flame occurs in an engine air inlet system, the pressure of a point P3 is higher than the pressure of a point P0, the pressure of a point P2 is higher than the pressure of a point P1 in a first branch pipe 301 under the action of flame shock waves, the first one-way valve 303 is closed, the first branch pipe 301 is in a closed state, an explosion-proof diesel engine is automatically switched to an explosion-proof air inlet system path to prevent flame from spreading, the pressure of a point P4 in a second branch pipe 302 is higher than the pressure of the point P3, the second one-way valve 304 is in an open state, the second branch pipe 302 is in a circulating state, due to the wall effect and the quenching effect of a flame arrester 305, the flame arrester 305 extinguishes the flame in circulating gas, the pressure is released through the second one-way valve 304, and explosion accidents caused by the fact that the flame spreads to the environment are avoided.
As shown in fig. 3, the flame arrester 305 is an explosion-proof parallel plate type flame arrester, which can prevent the flame generated in the air intake pipeline of the explosion-proof diesel engine from directly leading to the atmosphere, and the flame is extinguished when passing through the flame arrester 305, so as not to cause combustion or explosion. Flame arrester 305 includes that the left side that sets gradually from left to right laps 3051, supports base 3053 and right side apron 3052, forms a cavity, be provided with flame arrester original glass 3054 in the cavity, left side apron 3051 and right side apron 3052 pass through fastening bolt 3055 lock and connect, the left side apron 3051 and right side apron 3052 outside all are provided with expansion chamber 3056 to set up ring flange 3057 respectively. Both sides of the flame arrester 305 are respectively provided with a support connected with the left cover plate 3051 and the right cover plate 3052, and the supports are support plates which are connected with the engine body and are matched with the outer surfaces of the left cover plate 3051 and the right cover plate 3052.
The flame arrester element 3054 is placed on the supporting base 3053 between the left cover plate 3051 and the right cover plate 3052, and the left cover plate 3051 and the right cover plate 3052 are locked and fixed through a fastening bolt 3055. The expansion chamber 3056 reduces the resistance to gas flow inside the flame arrestor 305, and the flame arrestor 305 is connected to the bellows 2 via a flange 3057. The width of the flame-proof joint surface of the flame arrester 305 framework is not less than 25mm, the thickness of the fence plate of the flame arrester 305 is not less than 1cm, the flatness is not more than 0.15mm, the width in the airflow direction is not less than 50mm, and the gap between two adjacent fence plates is not more than 0.5mm.
While the present invention has been described in terms of its functions and operations, which are illustrated in the accompanying drawings, it is to be understood that such embodiments are merely illustrative and not restrictive of the broad invention, and that this invention can be embodied in many forms without departing from the spirit and scope of the appended claims.
Claims (5)
1. An automatic explosion-proof parallel air inlet system based on an explosion-proof diesel vehicle comprises an air filter (1), a supercharger (4), an intercooler (5), an air inlet shutoff valve (6) and an air inlet main pipe (7) which are sequentially connected through a corrugated pipe (2), wherein the air inlet main pipe (7) is connected with an air inlet manifold (8) connected with an air cylinder, the automatic explosion-proof parallel air inlet system is characterized in that a parallel air inlet branch pipe system (3) is connected between the air filter (1) and the supercharger (4), the parallel air inlet branch pipe system (3) comprises a first branch pipe (301) and a second branch pipe (302) which are arranged in parallel, a first check valve (303) is arranged on the first branch pipe (301), and a second check valve (304) and a flame arrester (305) are arranged on the second branch pipe (302); the installation directions of the first check valve (303) and the second check valve (304) are opposite, the inlet end of the first check valve (303) is connected with the air filter (1), the outlet end of the second check valve (304) is connected with the air filter (1), and the inlet end of the second check valve (304) is connected with the flame arrester (305).
2. The automatic explosion-proof parallel air intake system based on the explosion-proof diesel vehicle as claimed in claim 1, characterized in that the first check valve (303) and the second check valve (304) both adopt a straight-through pneumatic control check valve.
3. The automatic explosion-proof parallel air intake system based on the explosion-proof diesel vehicle is characterized in that the flame arrester (305) is an explosion-proof parallel plate type flame arrester, the flame arrester (305) comprises a left cover plate (3051), a supporting base (3053) and a right cover plate (3052) which are sequentially arranged from left to right to form a cavity, a flame arrester original piece (3054) is arranged in the cavity, the left cover plate (3051) and the right cover plate (3052) are connected through a fastening bolt (3055), and expansion cavities (3056) are respectively arranged on the outer sides of the left cover plate (3051) and the right cover plate (3052) and are respectively provided with a flange plate (3057).
4. The automatic explosion-proof parallel air inlet system based on the explosion-proof diesel vehicle is characterized in that brackets connected with a left cover plate (3051) and a right cover plate (3052) are respectively arranged at two sides of the flame arrester (305), and the brackets are supporting plates connected with an engine body and matched with the outer surfaces of the left cover plate (3051) and the right cover plate (3052).
5. The automatic explosion-proof parallel type air intake system based on the explosion-proof diesel vehicle as claimed in claim 1, wherein the first branch pipe (301) is a normal operation mode path in which no flame propagates outwards in the air intake system, and the second branch pipe (302) is an explosion-proof operation mode path in which flame propagates outwards in the air intake system; in a normal working mode, the first branch pipe (301) is in a circulation state, and the second branch pipe (302) is in a closed state; in an explosion-proof working mode, the first branch pipe (301) is in a closed state, the second branch pipe (302) is in a circulating state, and flame propagation is extinguished through the flame arrester (305).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710754447.1A CN107387276B (en) | 2017-08-29 | 2017-08-29 | Automatic explosion-proof parallel air inlet system based on explosion-proof diesel vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710754447.1A CN107387276B (en) | 2017-08-29 | 2017-08-29 | Automatic explosion-proof parallel air inlet system based on explosion-proof diesel vehicle |
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| CN107387276A CN107387276A (en) | 2017-11-24 |
| CN107387276B true CN107387276B (en) | 2023-03-14 |
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| US20220176295A1 (en) * | 2019-04-19 | 2022-06-09 | Donaldson Company, Inc. | Filter element with outlet port check valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4671060A (en) * | 1984-03-07 | 1987-06-09 | Wilkens Robert G | Explosion-protected diesel engine |
| CN101614146B (en) * | 2009-08-01 | 2011-11-30 | 煤炭科学研究总院太原研究院 | Explosion-proof diesel |
| CN103233799B (en) * | 2013-05-08 | 2015-05-13 | 昆山晋桦豹胶轮车制造有限公司 | High-power explosion-proof diesel engine |
| CN105221308A (en) * | 2014-07-04 | 2016-01-06 | 无锡国煤重工机械有限公司 | There is the anti-explosion diesel engine of flame trap |
| CN104214505B (en) * | 2014-08-30 | 2016-08-17 | 中国煤炭科工集团太原研究院有限公司 | Mining diesel engine explosion-proof performance test automatic gas distribution system |
| CN207229273U (en) * | 2017-08-29 | 2018-04-13 | 天津大学 | The parallel gas handling system of automatic burst-preventing based on anti-explosion diesel car |
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2017
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