CN210977722U - High-pressure common-rail explosion-proof diesel engine system - Google Patents

Abstract

The utility model relates to a high-pressure common rail explosion-proof diesel engine system, which comprises an explosion-proof diesel engine main body, a high-pressure common rail system, an air filter, an explosion-proof supercharger, an inter-cooling device, a tail gas treatment box and a heat radiation water tank, wherein all the parts are connected through a plurality of gas pipelines and a plurality of water pipelines; the intercooling device and the heat dissipation water tank are mounted into a whole. The utility model discloses carry out explosion-proof transformation with the high pressure common rail diesel engine system that has used widely on land, be applicable to the borehole operation, form a new high pressure common rail explosion-proof diesel engine system, have energy saving and emission reduction, the noise reduction improves the advantage of security performance, and through the strict control of various parameters, the high-efficient environmental protection operation of operation in the pit is realized.

Description

High-pressure common-rail explosion-proof diesel engine system

Technical Field

The utility model relates to an explosion-proof diesel engine system of high pressure common rail.

Background

The first generation of the fuel injection system adopted by the high-power diesel engine is a control mode of a mechanical fuel injection pump and a speed regulator, the fuel injection quantity is controlled by changing the position of a rack of the fuel injection pump through the speed regulator, and the high pressure of injection is generated by a cam of an oil pump; the second generation is a control mode of an electric control injection pump and an electric injection controller, the starting point and the injection quantity of oil injection can be flexibly controlled by controlling the opening time and the opening duration of an electromagnetic valve of the electric control pump, and the high pressure of injection is generated by an oil pump cam.

The latest fuel injection technology is a third generation high-pressure common rail fuel injection system, a fuel injection pump independently installed near each cylinder of a diesel engine is omitted, the high pressure of fuel injection is generated by the independent high-pressure common rail pump, high-pressure fuel is conveyed to each cylinder by a high-pressure common rail pipe, and the control of fuel injection is realized by driving an electric control fuel injector installed in each cylinder by an electronic injection controller.

The working process of the diesel engine is the same as that of the gasoline engine, and each working cycle also goes through four strokes of air intake, compression, work application and exhaust. However, the fuel for diesel engine is diesel oil, which has higher viscosity than gasoline and is not easy to evaporate, and its self-ignition temperature is lower than gasoline, so the formation and ignition mode of combustible mixture are different from that of gasoline engine.

The diesel engine sucks pure air in an intake stroke. When the compression stroke is close to the end, the oil pressure of the diesel oil is increased to more than 10MPa through an oil injection pump, the diesel oil is injected into the cylinder through an oil injector, and the diesel oil is mixed with the compressed high-temperature air in a short time to form combustible mixed gas. Because the compression ratio of the diesel engine is high (generally 16-22), the air pressure in the cylinder can reach 3.5-4.5MPa and the temperature can reach 750-1000K at the same time when the compression is finished (while the mixed air pressure of the gasoline engine at the moment can reach 0.6-1.2MPa and the temperature can reach 600-700K), which greatly exceeds the self-ignition temperature of the diesel oil. Therefore, after the diesel oil is injected into the cylinder, the diesel oil is mixed with the air in a short time and then is immediately ignited and combusted. The air pressure in the cylinder rises to 6-9MPa rapidly, and the temperature also rises to 2000-2500K. Under the push of high-pressure gas, the piston moves downwards and drives the crankshaft to rotate to do work, and the waste gas is exhausted into the atmosphere through the exhaust pipe.

The common diesel engine is driven by an engine camshaft, and diesel oil is delivered to a fuel chamber of each cylinder by a high-pressure oil pump. This fuel supply method is changed according to the change of the engine speed, and the optimum fuel supply amount at various speeds cannot be achieved. The common rail injection system of the electric control diesel engine which is more and more commonly adopted at present can better solve the problem.

The common rail injection type oil supply system consists of a high-pressure oil pump, a public oil supply pipe, an oil injector, an Electronic Control Unit (ECU) and a plurality of pipeline pressure sensors, wherein each oil injector in the system is connected with the public oil supply pipe through a respective high-pressure oil pipe, and the public oil supply pipe plays a hydraulic pressure accumulation role on the oil injector. When the high-pressure oil pump works, fuel oil is conveyed to the public oil supply pipe by the high pressure oil pump, the high-pressure oil pump, the pressure sensor and the ECU form closed-loop work, the oil pressure in the public oil supply pipe is accurately controlled, and the phenomenon that the oil supply pressure changes along with the rotating speed of an engine is thoroughly changed. The method is mainly characterized by comprising the following three aspects:

1. the fuel injection timing is completely separated from the fuel metering, and the fuel injection pressure and the fuel injection process are timely controlled by the ECU.

2. The pressure, initial point and duration of oil injection of each cylinder can be adjusted according to the working condition of the engine, so that the optimal control point of oil injection is pursued.

3. Can realize high oil injection pressure and can realize the pre-injection of diesel oil.

Because the high-pressure common rail diesel engine system is already used on the land and has better effect, but the equipment for working under the condition is still generally provided with the traditional diesel engine system, how to perform explosion-proof transformation on the high-pressure common rail diesel engine system which is already widely used on the land is suitable for underground operation, and the formation of a new high-pressure common rail explosion-proof diesel engine system is particularly important.

Disclosure of Invention

An object of the utility model is to overcome above-mentioned not enough, provide and carry out explosion-proof transformation with the high pressure common rail diesel engine system that has used widely on land, be applicable to the borehole operation, form a new high pressure common rail explosion-proof diesel engine system.

The purpose of the utility model is realized like this:

a high-pressure common rail explosion-proof diesel engine system comprises an explosion-proof diesel engine main body, a high-pressure common rail system, an air filter, an explosion-proof supercharger, an inter-cooling device, a tail gas treatment box and a heat dissipation water tank, wherein all the components are connected through a plurality of air pipelines and a plurality of water pipelines; the intercooling device and the heat dissipation water tank are arranged into a whole;

an explosion-proof air inlet manifold is arranged at the air inlet end of the explosion-proof diesel engine main body, an explosion-proof exhaust manifold is arranged at the exhaust end of the explosion-proof diesel engine main body, all air pipelines connected in front of the explosion-proof air inlet manifold are collectively called as an air inlet system, and all air pipelines connected behind the explosion-proof exhaust manifold are collectively called as an exhaust system; the air inlet system, the exhaust system and the air path of the explosion-proof diesel engine main body positioned between the air inlet system and the exhaust system form the whole air circulation system of the high-pressure common-rail explosion-proof diesel engine.

Preferably, the air inlet system sequentially comprises an air filter, an explosion-proof supercharger, an inter-cooling device, an air inlet damper assembly, an air inlet flame arrester and an explosion-proof air inlet manifold from front to back, wherein an air outlet of the air filter is connected with an air inlet of the explosion-proof supercharger, a supercharging air outlet of the explosion-proof supercharger is connected with an air inlet of the inter-cooling device through a first supercharging air inlet pipe, an air outlet of the inter-cooling device is connected with an air inlet of the air inlet damper assembly through a second supercharging air inlet pipe, an air outlet of the air inlet damper assembly is connected with an air inlet of the air inlet flame arrester, and an air outlet of the air inlet flame.

Preferably, the exhaust system comprises an explosion-proof exhaust manifold, an explosion-proof supercharger and a tail gas treatment box in sequence from front to back, an exhaust port of the explosion-proof exhaust manifold is connected with a return air port of the explosion-proof supercharger, and an exhaust port of the explosion-proof supercharger is connected with an air inlet of the tail gas treatment box through an exhaust corrugated pipe.

Preferably, an explosion-proof exhaust manifold cooling water path is led out from a first water outlet end at the bottom of the heat radiation water tank, and the explosion-proof exhaust manifold cooling water path returns to a first water return end at the top of the heat radiation water tank after passing through a plurality of components; wherein the explosion-proof exhaust manifold cooling water path sequentially comprises an explosion-proof exhaust manifold water supply pump water inlet pipeline, an explosion-proof exhaust manifold water supply pump water outlet pipeline, an explosion-proof exhaust manifold, an explosion-proof supercharger water inlet pipeline, an explosion-proof supercharger water outlet pipeline, an exhaust corrugated pipe and an exhaust corrugated pipe water return pipeline from front to back, the water inlet end of the explosion-proof exhaust manifold water supply pump water inlet pipeline is connected with a first water outlet end at the bottom of the radiating water tank, the water outlet end of the explosion-proof exhaust manifold water supply pump water inlet pipeline is connected with the water inlet end of the explosion-proof exhaust manifold water supply pump, the water outlet end of the explosion-proof exhaust manifold water supply pump water outlet pipeline is connected with the water inlet end of the explosion-proof exhaust manifold, the water outlet end of the explosion-proof exhaust manifold water supply pump water inlet pipeline, the water outlet end of the water inlet pipeline of the explosion-proof supercharger is connected with the water inlet end of the explosion-proof supercharger, the water outlet end of the explosion-proof supercharger is connected with the water inlet end of the water outlet pipeline of the explosion-proof supercharger, the water outlet end of the water outlet pipeline of the explosion-proof supercharger is connected with the water inlet end of an outer water jacket of the exhaust corrugated pipe, the water outlet end of the outer water jacket of the exhaust corrugated pipe is connected with the water inlet end of a water return pipeline of the exhaust corrugated pipe, and the water outlet end of the water return pipeline of the exhaust corrugated pipe is.

Preferably, the high-pressure common rail system comprises a common rail pipeline, wherein four oil outlet pipelines are connected to the common rail pipeline, the four oil outlet pipelines are respectively connected with four oil nozzles, electromagnetic valves are arranged on the oil nozzles, the oil nozzles are installed on oil inlets of all cylinder bodies of the main body of the explosion-proof diesel engine, an oil inlet pipeline and an oil return pipeline are further connected to the common rail pipeline, the oil inlet pipeline and the oil return pipeline are respectively connected with an oil outlet and an oil return port of an oil pump, and the oil pump is connected with an oil tank.

Preferably, an explosion-proof diesel engine main body cooling water path is led out from a second water outlet end at the bottom of the heat radiation water tank, and the explosion-proof diesel engine main body cooling water path returns to a second water return end at the top of the heat radiation water tank after passing through a plurality of parts.

Preferably, the intercooling device comprises an intercooling heat exchange cavity body, connecting angle steels are arranged on the left side and the right side of the intercooling heat exchange cavity body, the intercooling heat exchange cavity body is connected to one surface of the heat radiation water tank far away from the explosion-proof diesel engine body through two connecting angle steels, the top of the inter-cooling heat exchange cavity body is provided with an inter-cooling first interface and an inter-cooling second interface, the first intercooling interface is an air inlet of the intercooling device, the first intercooling interface is connected with the first supercharging air inlet pipe, the second intercooling interface is an air outlet of the intercooling device, the second intercooling interface is connected with the second supercharging air inlet pipe, the caliber of the intercooling air inlet connecting section positioned at the top of the intercooling heat exchange cavity body is gradually reduced from the first intercooling interface inwards, and the caliber of the intercooling air outlet connecting section positioned at the top of the intercooling heat exchange cavity body is gradually reduced from the second intercooling interface inwards.

Preferably, the radiator tank comprises a core, the upper side, the lower side, the left side and the right side of the core are respectively connected with a radiator tank top shell, a radiator tank bottom shell, a radiator tank left side plate and a radiator tank right side plate, the radiator tank left side plate and the radiator tank right side plate are respectively and tightly attached to the left side and the right side of the core, the radiator tank top shell is arranged at the top of the core, the radiator tank top shell is in a hollow state, an upper sealing gasket is further arranged between the bottom of the radiator tank top shell and the top of the core, the top of the radiator tank top shell is provided with two compound water feeding port covers, one side of the radiator tank top shell is connected with a first water return end and a second water return end, the radiator tank bottom shell is erected at the bottom of the core, the radiator tank bottom shell is in a hollow state, an engine oil cooler is, one side of the heat dissipation water tank bottom shell is provided with two water discharging switches, the other side of the heat dissipation water tank bottom shell is connected with a first water discharging end and a second water discharging end, the upper half sections of the outer side surfaces of the heat dissipation water tank left side plate and the heat dissipation water tank right side plate are respectively provided with a handle, the lower half sections of the outer side surfaces of the heat dissipation water tank left side plate and the heat dissipation water tank right side plate are respectively provided with a heat dissipation water tank supporting base, the joints between the heat dissipation water tank supporting base and the heat dissipation water tank left side plate and between the heat dissipation water tank right side plate are provided with reinforcing ribs, one side of the heat dissipation water tank, which is close to the explosion-proof diesel engine main body, is provided with a wind scoop.

Preferably, the tail gas treatment box comprises a tail gas treatment box body, the right section in the tail gas treatment box body is an air inlet section, the left section in the tail gas treatment box body is an air outlet section, the air inlet section and the air outlet section are separated by a partition plate, the inside wall around the tail gas treatment box is connected respectively at both ends around the baffle, the upper and lower inside wall that the upper and lower both ends of baffle left the tail gas treatment box respectively has one section distance, be provided with the floater in the section of giving vent to anger of tail gas treatment box, the lower extreme of floater is connected with the floater screw rod through the floater connecting pin, the one end threaded connection moisturizing connecting rod of floater screw rod, the moisturizing valve body is connected to the moisturizing connecting rod, the moisturizing valve body passes through the moisturizing seat and connects on the left side wall of tail gas treatment box, the moisturizing connects in the outer end of moisturizing valve body, the left side wall lower extreme of tail gas treatment box is provided with the drain outlet.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses carry out explosion-proof transformation with the high pressure common rail diesel engine system that has used widely on land, be applicable to the borehole operation, form a new high pressure common rail explosion-proof diesel engine system, have energy saving and emission reduction, the noise reduction improves the advantage of security performance, and through the strict control of various parameters, the high-efficient environmental protection operation of operation in the pit is realized.

Drawings

Fig. 1 is a structural schematic diagram of a high-pressure common-rail explosion-proof diesel engine system.

Fig. 2 is another view of fig. 1.

Fig. 3 is a schematic diagram of the high-pressure common rail system mounted on the explosion-proof diesel engine main body.

FIG. 4 is a schematic diagram of a high pressure common rail system.

Fig. 5 is a schematic diagram of the intercooler device and the radiator tank.

Fig. 6 is another view of fig. 5.

Fig. 7 is a schematic view of an intercooler device.

FIG. 8 is a schematic view of a tail gas treatment tank.

FIG. 9 is a front view of the exhaust treatment housing of FIG. 8 with the front panel removed.

FIG. 10 is a perspective view of the exhaust treatment housing of FIG. 8 with the front panel removed.

FIG. 11 is a front view, in half section, of an intake section within the exhaust treatment housing.

Fig. 12 is a perspective view, in half section, of the intake section within the exhaust treatment housing.

FIG. 13 is another perspective view of the intake section within the exhaust treatment housing.

FIG. 14 is a schematic view of a flow equalization gas guide mechanism.

Fig. 15 is a schematic view of the mounting of the anti-explosion barrier to the barrier mount.

Fig. 16 is a schematic view of an explosion-proof fence.

FIG. 17 is a schematic view of a bar compact.

FIG. 18 is a schematic view of an intake damper assembly.

Fig. 19 is a table for selecting rail pressure.

Fig. 20 is a table for selecting the base injection angle.

Fig. 21 is a table for selecting a water temperature correction injection angle.

Wherein:

explosion-proof diesel engine main body 100, explosion-proof intake manifold 101 and explosion-proof exhaust manifold 102

The high-pressure common rail system 200, a common rail pipeline 201, an oil outlet pipeline 202, an oil nozzle 203, an electromagnetic valve 204, an oil inlet pipeline 205, an oil return pipeline 206 and an oil pump 207

Air filter 300

Explosion-proof supercharger 400

The device comprises an intercooling device 500, an intercooling heat exchange chamber body 501, a connecting angle steel 502, an intercooling first interface 503 and an intercooling second interface 504;

the device comprises a tail gas treatment box 600, a tail gas treatment box body 601, a partition plate 602, a gas inlet flange 603, a tail gas inlet pipe 604, a first waste gas pipe 605, a first waste gas pipe notch 605.1, a tail gas cover plate 606, a second waste gas pipe 607, a third waste gas pipe 608, a third waste gas pipe notch 608.1, a flow equalizing and gas guiding mechanism 609, a circular baffle 610, a vent hole 610.1, a fence seat 611, a fence pressing mechanism 612, a hinge column 612.1, a threaded column 612.2, a pressing bar 612.3, a pin 612.4, a nut 612.5, a guide plate 612.6, a guide column 612.7, a compression spring 612.8, a bar-shaped pressing block 612.9, a pressing block pin 612.10, an explosion-proof fence 613, a limiting column 614, a pressing plate 615, a fence upper cover plate 616, a waste gas pipe 617, a floating ball 618, a floating ball connecting pin 619, a floating ball screw 620, a water replenishing connecting rod 621, a water replenishing valve 622, a water replenishing seat;

air intake system 700, first supercharged air inlet pipe 701 and second supercharged air inlet pipe 702

Exhaust system 800

The air inlet damper comprises an air inlet damper assembly 900, a damper pipeline 901, an air inlet connecting flange 902, an air outlet connecting flange 903, a damper support seat 904, a damper cylinder 905, a damper 906, a damper rotating rod 907 and a swing rod 908;

air intake flame arrester 1000

An explosion-proof exhaust manifold cooling water path 1100, an explosion-proof exhaust manifold water supply pump water inlet pipeline 1101, an explosion-proof exhaust manifold water supply pump 1102, an explosion-proof exhaust manifold water supply pump water outlet pipeline 1103, an explosion-proof supercharger water inlet pipeline 1104, an explosion-proof supercharger water outlet pipeline 1105 and an exhaust bellows water return pipeline 1106

Exhaust bellows 1200

Explosion-proof diesel engine main body cooling water path 1300

The heat-dissipating water tank comprises a heat-dissipating water tank 1400, a core 1401, a heat-dissipating water tank top shell 1402, a heat-dissipating water tank bottom shell 1403, a heat-dissipating water tank left side plate 1404, a heat-dissipating water tank right side plate 1405, an upper sealing gasket 1406, a multiple water filling port cover 1407, a lower sealing gasket 1408, a water discharging switch 1409, a handle 1410, a heat-dissipating water tank support base 1411 and an air guide cover 1412.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 18, the high pressure common rail explosion-proof diesel engine system according to the present invention comprises an explosion-proof diesel engine main body 100, a high pressure common rail system 200, an air filter 300, an explosion-proof supercharger 400, an inter-cooling device 500, an exhaust gas treatment tank 600 and a heat radiation water tank 1400, wherein the above components are connected by a plurality of air pipelines and a plurality of water pipelines; the inter-cooling device 500 and the heat radiation water tank 1400 are installed as a whole;

an explosion-proof intake manifold 101 is arranged at the air inlet end of the explosion-proof diesel engine main body 100, an explosion-proof exhaust manifold 102 is arranged at the exhaust end of the explosion-proof diesel engine main body 100, all air pipelines connected in front of the explosion-proof intake manifold 101 are collectively called an air inlet system 700, and all air pipelines connected behind the explosion-proof exhaust manifold 102 are collectively called an exhaust system 800; the air inlet system 700, the air outlet system 800 and the air path of the explosion-proof diesel engine main body 100 positioned between the air inlet system and the air outlet system form the whole air circulation system of the high-pressure common-rail explosion-proof diesel engine;

the air inlet system 700 sequentially comprises an air filter 300, an explosion-proof supercharger 400, an intercooling device 500, an air inlet air door assembly 900, an air inlet flame arrester 1000 and an explosion-proof air inlet manifold 101 from front to back, wherein an air outlet of the air filter 300 is connected with an air inlet of the explosion-proof supercharger 400, a supercharging air outlet of the explosion-proof supercharger 400 is connected with an air inlet of the intercooling device 500 through a first supercharging air inlet pipe 701, an air outlet of the intercooling device 500 is connected with an air inlet of the air inlet air door assembly 900 through a second supercharging air inlet pipe 702, an air outlet of the air inlet air door assembly 900 is connected with an air inlet of the air inlet flame arrester 1000, and an air outlet of the air inlet flame;

the exhaust system 800 comprises an explosion-proof exhaust manifold 102, an explosion-proof supercharger 400 and a tail gas treatment box 600 from front to back in sequence, an exhaust port of the explosion-proof exhaust manifold 102 is connected with a return air port of the explosion-proof supercharger 400, and an exhaust port of the explosion-proof supercharger 400 is connected with an air inlet of the tail gas treatment box 600 through an exhaust bellows 1200;

an explosion-proof exhaust manifold cooling water path 1100 is led out from a first water outlet end at the bottom of the heat radiation water tank 1400, and the explosion-proof exhaust manifold cooling water path 1100 returns to a first water return end at the top of the heat radiation water tank 1400 after passing through a plurality of components; wherein the explosion-proof exhaust manifold cooling water path 1100 sequentially comprises an explosion-proof exhaust manifold water supply pump water inlet pipeline 1101, an explosion-proof exhaust manifold water supply pump 1102, an explosion-proof exhaust manifold water supply pump water outlet pipeline 1103, an explosion-proof exhaust manifold 102, an explosion-proof supercharger water inlet pipeline 1104, an explosion-proof supercharger 400, an explosion-proof supercharger water outlet pipeline 1105, an exhaust bellows 1200 and an exhaust bellows water return pipeline 1106 from front to back, the water inlet end of the explosion-proof exhaust manifold water supply pump water inlet pipeline 1101 is connected with a first water outlet end at the bottom of the radiating water tank 1400, the water outlet end of the explosion-proof exhaust manifold water supply pump water inlet pipeline 1101 is connected with the water inlet end of the explosion-proof exhaust manifold water supply pump 1102, the water outlet end of the explosion-proof exhaust manifold water supply pump 1102 is connected with the water inlet end of the explosion-proof exhaust manifold water supply pump water outlet pipeline 1103, the, the water outlet end of the explosion-proof exhaust manifold 102 is connected with the water inlet end of an explosion-proof supercharger water inlet pipeline 1104, the water outlet end of the explosion-proof supercharger water inlet pipeline 1104 is connected with the water inlet end of an explosion-proof supercharger 400, the water outlet end of the explosion-proof supercharger 400 is connected with the water inlet end of an explosion-proof supercharger water outlet pipeline 1105, the water outlet end of the explosion-proof supercharger water outlet pipeline 1105 is connected with the water inlet end of an outer water jacket of an exhaust corrugated pipe 1200, the water outlet end of the outer water jacket of the exhaust corrugated pipe 1200 is connected with the water inlet end of an exhaust corrugated pipe water return pipeline 1106, and the water outlet end of the exhaust corrugated pipe water;

the high-pressure common rail system 200 comprises a common rail pipe 201, four oil outlet pipes 202 are connected to the common rail pipe 201, the four oil outlet pipes 202 are respectively connected with four oil nozzles 203, electromagnetic valves 204 are arranged on the oil nozzles, the oil nozzles 203 are arranged on oil inlets of all cylinder bodies of the explosion-proof diesel engine main body 100, an oil inlet pipe 205 and an oil return pipe 206 are further connected to the common rail pipe 201, the oil inlet pipe 205 and the oil return pipe 206 are respectively connected with an oil outlet and an oil return port of an oil pump 207, and the oil pump 207 is connected with an oil tank.

A second water outlet end at the bottom of the heat radiation water tank 1400 leads out an explosion-proof diesel engine main body cooling water path, and the explosion-proof diesel engine main body cooling water path returns to a second water return end at the top of the heat radiation water tank 1400 after passing through a plurality of components; the cooling water path of the main body of the explosion-proof diesel engine sequentially comprises a water inlet pipeline of the main body of the explosion-proof diesel engine, a water supply pump of the main body of the explosion-proof diesel engine, a water path inside the main body of the explosion-proof diesel engine, a temperature controller and a water return pipeline of the main body of the explosion-proof diesel engine from front to back;

the intercooling device 500 comprises an intercooling heat exchange chamber body 501, connecting angle steels 502 are arranged on the left side and the right side of the intercooling heat exchange chamber body 501, the intercooling heat exchange chamber body 501 is connected to one surface, far away from the explosion-proof diesel engine body 100, of the heat dissipation water tank 1400 through the two connecting angle steels 502, an intercooling first interface 503 and an intercooling second interface 504 are arranged on the top of the intercooling heat exchange chamber body 501, wherein the intercooling first interface 503 is an air inlet of the intercooling device 500, the intercooling first interface 503 is connected with a first supercharging air inlet pipe 701, the intercooling second interface 504 is an air outlet of the intercooling device 500, the intercooling second interface 504 is connected with a second supercharging air inlet pipe 702, the caliber of an intercooling air inlet connecting section on the top of the intercooling heat exchange chamber body 501 is gradually reduced from the intercooling first interface 503 inwards, and the caliber of an intercooling air outlet connecting, thereby making the air intake and air outtake smoother.

The heat radiation water tank 1400 comprises a core 1401, a heat radiation water tank top shell 1402, a heat radiation water tank bottom shell 1403, a heat radiation water tank left side plate 1404 and a heat radiation water tank right side plate 1405 are respectively connected to the upper side, the lower side, the left side and the right side of the core 1401, the heat radiation water tank left side plate 1404 and the heat radiation water tank right side plate 1405 are respectively tightly attached to the left side and the right side of the core 1401, the heat radiation water tank top shell 1402 is covered on the top of the core 1401, the heat radiation water tank top shell 1402 is in a hollow state, an upper sealing gasket 1406 is further arranged between the bottom of the heat radiation water tank top shell 1402 and the top of the core 1401, two compound water feeding port covers 1407 are arranged on the top of the heat radiation water tank top shell 1402, one side of the heat radiation water tank top shell 1402 is connected with a first water return end and a second water return end, the heat radiation water tank bottom shell 1403 is erected, a side of heat dissipation water tank drain pan 1403 is provided with two switches 1409 that drain, and the opposite side of heat dissipation water tank drain pan 1403 is connected with first water outlet end and second water outlet end, first section of the lateral surface of heat dissipation water tank left side board 1404 and heat dissipation water tank right side board 1405 all is provided with handle 1410, first section of the lateral surface of heat dissipation water tank left side board 1404 and heat dissipation water tank right side board 1405 all is provided with heat dissipation water tank support base 1411, and the junction between heat dissipation water tank support base 1411 and heat dissipation water tank left side board 1404 and heat dissipation water tank right side board 1405 is provided with the strengthening rib. And a wind scooper 1412 is arranged on one side of the heat dissipation water tank close to the explosion-proof diesel engine main body 100, and four sides of the wind scooper 1412 are respectively connected with the edges of a heat dissipation water tank top shell 1402, a heat dissipation water tank bottom shell 1403, a heat dissipation water tank left side plate 1404 and a heat dissipation water tank right side plate 1405.

The tail gas treatment box 600 comprises a tail gas treatment box body 601, the right section in the tail gas treatment box body 601 is an air inlet section, the left section in the tail gas treatment box body 601 is an air outlet section, the air inlet section and the air outlet section are separated by a partition plate 602, the front end and the rear end of the partition plate 602 are respectively connected with the front inner side wall and the rear inner side wall of the tail gas treatment box body 601, the upper end and the lower end of the partition plate 602 are respectively separated from the upper inner side wall and the lower inner side wall of the tail gas treatment box body 601 by a distance, the right section of the top plate of the tail gas treatment box body 601 is provided with an air inlet flange 603, the air inlet flange 603 is connected with a tail gas inlet pipe 604 to the tail gas treatment box body 601, the lower end of the tail gas inlet pipe 604 is separated from the bottom of the tail gas treatment box body 601 by a distance, the periphery of the middle-lower section of the tail gas inlet pipe 604, the tail gas cover plate 606 is away from the first waste gas pipe 605 by a certain distance, the periphery of the tail gas cover plate 606 is connected with a second waste gas pipe 607 downwards, the pipe diameter of the second waste gas pipe 607 is larger than that of the first waste gas pipe 605, the height of the lower opening of the second waste gas pipe 607 is lower than that of the upper opening of the first waste gas pipe 605, a third waste gas pipe 608 is surrounded at the periphery of the lower end of the tail gas inlet pipe 604, the bottom of the third waste gas pipe 608 is contacted with the bottom of the tail gas treatment box 601, the pipe diameter of the third waste gas pipe 608 is smaller than that of the first waste gas pipe 605, a flow equalizing gas guide mechanism 609 is arranged at the outlet of the lower end of the tail gas inlet pipe 604, the flow equalizing gas guide mechanism 609 is composed of a plurality of flow equalizing gas guide pieces with the same structure, preferably four flow equalizing gas guide pieces, each flow equalizing gas guide piece comprises an upper rectangular piece structure and a lower arc piece, the arc-shaped sheet structure of the plurality of flow-equalizing air guide sheets is bent clockwise from the overlooking angle, the outer edge of the arc-shaped sheet structure is tangent to the outer edge of the rectangular sheet structure, an arc-shaped notch is formed in the inner edge of the arc-shaped sheet structure, the lower end of the flow-equalizing air guide mechanism 609 extends below the lower opening of the tail gas inlet pipe 604, and the outer edge of the rectangular sheet structure of the flow-equalizing air guide sheet of the flow-equalizing air guide mechanism 609 is connected with the interior of the tail gas inlet; a third exhaust pipe notch 608.1 with an upward concave rectangular structure is uniformly arranged at the lower opening of the third exhaust pipe 608, the lower opening of the first exhaust gas pipe 605 is uniformly provided with a first exhaust gas pipe notch 605.1 which is concavely arranged upwards and has a rectangular structure, the third exhaust gas pipe notch 608.1 and the first exhaust gas pipe notch 605.1 are arranged in a staggered manner, the height of the third exhaust gas pipe notch 608.1 is smaller than that of the first exhaust gas pipe notch 605.1, preferably four third exhaust gas pipe notches 608.1 and four first exhaust gas pipe notches 605.1 are provided, a circular baffle plate 610 is arranged inside the third exhaust pipe 608, the height of the circular baffle plate 610 is consistent with the top height of the third exhaust pipe notch 608.1, a plurality of vent holes 610.1 which are vertically communicated are arranged on the circular baffle plate 610, preferably four vent holes 610.1, the positions of the vent holes 610.1 correspond to the position of the first exhaust pipe notch 605.1, namely the positions of the vent holes 610.1 are staggered with the position of the third exhaust pipe notch 608.1;

a fence seat 611 is arranged on the left section of the top plate of the tail gas treatment box 601, the fence seat 611 is of a rectangular frame structure, two vertically arranged fence pressing mechanisms 612 are respectively arranged on the left side frame and the right side frame of the fence seat 611, an anti-explosion fence 613 is upwards arranged on the inner edge of the rectangular frame structure of the fence seat 611, two left limiting columns and right limiting columns 614 are arranged on the front frame of the fence seat 611, the limiting columns 614 are used for front side positioning when the anti-explosion fence 613 is installed, a pressing plate 615 of the rectangular frame structure is connected between the two fence pressing mechanisms 612, the pressing plate 615 is used for pressing the anti-explosion fence 613, the fence pressing mechanism 612 comprises a hinged column 612.1 at the front end and a threaded column 612.2 at the rear end, the top ends of the hinged column 612.1 and the threaded column 38925 are directly connected with a pressing strip 385932, the front end of the pressing strip 2 is connected to the top of the hinged column 612.1 through a pin 612., an opening at the rear end of the pressing bar 612.3 is sleeved outside the top thread of the threaded column 612.2 and is locked by a nut 612.5, guide plates 612.6 which are longitudinally arranged are further arranged on the left and right frames of the fence seat 611, a front guide column 612.7 and a rear guide column 612.7 are upwards arranged on the guide plates 612.6, a compression spring 612.8 is sleeved on the guide columns 612.7, the rear end of the guide plate 612.6 is sleeved outside the bottom end of the threaded column 612.2, positioning holes of the left and right frames of the pressing plate 615 are respectively sleeved on the guide columns 612.7 of the left and right fence pressing mechanisms 612, the pressing plate 615 is positioned above the compression spring 612.8, a strip-shaped hollow which is through in the up-down direction is arranged in the middle of the pressing bar 612.3, a strip-shaped pressing block 612.9 is arranged in the strip-shaped pressing block 612.9, the middle of the strip-shaped pressing block 612.9 is connected with the middle of the pressing bar 612.3 through a transverse pressing block pin 612.10, the middle of the strip-shaped pressing block 612.9 is, so that the force is uniformly applied, a fence upper cover plate 616 is arranged above the anti-explosion fence 613, the fence upper cover plate 616 is connected with a temperature sensor 626, and the fence upper cover plate 616 is connected with an exhaust gas pipe 626 facing to the front lower part.

Be provided with back shroud 617 on the posterior lateral plate of tail gas treatment box 601, be provided with floater 618 in the section of giving vent to anger of tail gas treatment box 601, the lower extreme of floater 618 is connected with floater screw rod 620 through floater connecting pin 619, the one end threaded connection moisturizing connecting rod 621 of floater screw rod 620, moisturizing connecting rod 621 connects moisturizing valve body 622, moisturizing valve body 622 passes through moisturizing seat 623 and connects on the left side wall of tail gas treatment box 601, moisturizing connector 627 is connected to the outer end of moisturizing valve body 622, the left side wall lower extreme of tail gas treatment box 601 is provided with drain 624, be provided with piece formula ball valve 625 on the drain 624.

The air inlet and air door assembly 900 comprises an air door pipeline 901, an air inlet and an air outlet of the air door pipeline 901 are respectively provided with an air inlet connecting flange 902 and an air outlet connecting flange 903, the top of the outer side of the air door pipeline 901 is vertically connected with an air door supporting seat 904 in the horizontal direction, an air door cylinder 905 is arranged above the air door supporting seat 904, a round air door 906 matched with the inner wall of the air door pipeline 901 is arranged in the air door pipeline 901, the air door 906 is upwards connected with an air door rotating rod 907, the air door rotating rod 907 upwards extends out of the air door pipeline 901 and the air door supporting seat 904, the telescopic end of the air door cylinder 905 is connected with the upper end of the air door rotating rod 907 through a swing rod 908, and the air door 906.

A control method of a high-pressure common-rail explosion-proof diesel engine system comprises the following steps:

the high-pressure common rail explosion-proof diesel engine system is provided with a rotating speed sensor, a rail pressure sensor, an air inlet pressure temperature sensor, a cooling liquid temperature sensor and the like, wherein the rotating speed sensor is a crankshaft sensor and is arranged on a flywheel shell, the rotating speed sensor measures the rotating speed of the engine, the rail pressure sensor measures the rail pressure of the high-pressure common rail, the air inlet pressure temperature sensor measures the air inlet pressure and the air inlet temperature, the cooling liquid temperature sensor measures the cooling liquid temperature,

real-time data are transmitted to the ECU through the measurement of the parameters, the ECU calls the tables, and the control system calculates and then controls the opening and closing and the opening of each valve.

Selection of rail pressure referring to Table 1 in FIG. 19 of the specification:

the rail pressure of the real-time high-pressure common rail is controlled through the real-time rotating speed and the oil quantity in the table 1; be provided with rail pressure sensor on the common rail pipeline, rail pressure carries out real-time detection through rail pressure sensor and obtains real-time rail pressure value, obtains the theoretical rail pressure value of rail pressure through the rotational speed data of cam and bent axle, and real-time rail pressure value and theoretical rail pressure value carry out the comparison if there is the difference, then feed back to the high-pressure oil pump, thereby realize through the regulation of high-pressure oil pump that the regulation of real-time rail pressure value makes it tend to theoretical rail pressure value size.

Calculating a real-time injection angle of an oil nozzle of a high-pressure common rail system of the high-pressure common rail explosion-proof diesel engine system at a corresponding moment in real time according to the real-time parameters; the control of the real-time injection angle is controlled by an electromagnetic valve inside the oil injector.

Wherein: real-time spray angle = basic spray angle + water temperature correction spray angle water temperature correction coefficient

Selection of base spray angle referring to table 2 in fig. 20:

selection of water temperature correction injection angle referring to table 3 of fig. 21:

the water temperature correction factor is selected as follows:

the water temperature correction coefficient is 1.5 at minus 30 ℃, 1.25 at minus 20 ℃, 1 at minus 10 ℃, 0 at 0 ℃ and 0 at over 0 ℃, the linear change is a first linear change from minus 30 ℃ to minus 10 ℃, and the linear change is a second linear change from minus 10 ℃ to 0 ℃.

The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims (9)

1. A high-pressure common rail explosion-proof diesel engine system is characterized by comprising an explosion-proof diesel engine main body (100), a high-pressure common rail system (200), an air filter (300), an explosion-proof supercharger (400), an inter-cooling device (500), a tail gas treatment box (600) and a heat radiation water tank (1400), wherein all the components are connected through a plurality of air pipelines and a plurality of water pipelines; the intercooling device (500) and the heat dissipation water tank (1400) are arranged into a whole;

an anti-explosion intake manifold (101) is arranged at the air inlet end of the anti-explosion diesel engine main body (100), an anti-explosion exhaust manifold (102) is arranged at the exhaust end of the anti-explosion diesel engine main body (100), all air pipelines connected in front of the anti-explosion intake manifold (101) are collectively called an air inlet system (700), and all air pipelines connected behind the anti-explosion exhaust manifold (102) are collectively called an exhaust system (800); the air inlet system (700), the exhaust system (800) and the air path of the explosion-proof diesel engine main body (100) between the air inlet system and the exhaust system form the whole air circulation system of the high-pressure common-rail explosion-proof diesel engine.

2. The high-pressure common rail explosion-proof diesel engine system as claimed in claim 1, wherein the air intake system (700) comprises an air filter (300), an explosion-proof supercharger (400), an inter-cooling device (500), an air intake damper assembly (900), an air intake flame arrester (1000) and an explosion-proof air intake manifold (101) in sequence from front to back, the air outlet of the air filter (300) is connected with the air inlet of the explosion-proof supercharger (400), the supercharging air outlet of the explosion-proof supercharger (400) is connected with the air inlet of the intercooling device (500) through a first supercharging air inlet pipe (701), the air outlet of the intercooling device (500) is connected with the air inlet of the air inlet air door assembly (900) through a second supercharging air inlet pipe (702), the air outlet of the air inlet air door assembly (900) is connected with the air inlet of the air inlet flame arrester (1000), and the air outlet of the air inlet flame arrester (1000) is connected with the air inlet of the explosion-proof air inlet manifold (101).

3. The high-pressure common-rail explosion-proof diesel engine system as claimed in claim 1, wherein the exhaust system (800) comprises an explosion-proof exhaust manifold (102) and an explosion-proof supercharger (400) to a tail gas treatment tank (600) in sequence from front to back, an exhaust port of the explosion-proof exhaust manifold (102) is connected with a return air port of the explosion-proof supercharger (400), and an exhaust port of the explosion-proof supercharger (400) is connected with an air inlet of the tail gas treatment tank (600) through an exhaust bellows (1200).

4. The high-pressure common-rail explosion-proof diesel engine system as claimed in claim 1, wherein an explosion-proof exhaust manifold cooling water path (1100) leads from a first water outlet end at the bottom of the heat-radiating water tank (1400), and the explosion-proof exhaust manifold cooling water path (1100) returns to a first water return end at the top of the heat-radiating water tank (1400) after passing through a plurality of components; wherein the explosion-proof exhaust manifold cooling water circuit (1100) sequentially comprises an explosion-proof exhaust manifold water supply pump water inlet pipeline (1101), an explosion-proof exhaust manifold water supply pump (1102), an explosion-proof exhaust manifold water supply pump water outlet pipeline (1103), an explosion-proof exhaust manifold (102), an explosion-proof supercharger water inlet pipeline (1104), an explosion-proof supercharger (400), an explosion-proof supercharger water outlet pipeline (1105), an exhaust corrugated pipe (1200) and an exhaust corrugated pipe water return pipeline (1106) from front to back, the water inlet end of the explosion-proof exhaust manifold water supply pump water inlet pipeline (1101) is connected with a first water outlet end at the bottom of the radiating water tank (1400), the water outlet end of the explosion-proof exhaust manifold water supply pump water inlet pipeline (1101) is connected with the water inlet end of the explosion-proof exhaust manifold water supply pump (1102), the water outlet end of the explosion-proof exhaust manifold water supply pump (1102) is connected with the water inlet, the water outlet end of a water outlet pipeline (1103) of the water supply pump of the explosion-proof exhaust manifold is connected with the water inlet end of the explosion-proof exhaust manifold (102), the water outlet end of the explosion-proof exhaust manifold (102) is connected with the water inlet end of a water inlet pipeline (1104) of the explosion-proof supercharger, the water outlet end of the water inlet pipeline (1104) of the explosion-proof supercharger is connected with the water inlet end of an explosion-proof supercharger (400), the water outlet end of the explosion-proof supercharger (400) is connected with the water inlet end of a water outlet pipeline (1105) of the explosion-proof supercharger, the water outlet end of the water outlet pipeline (1105) of the explosion-proof supercharger is connected with the water inlet end of an outer water jacket of the exhaust corrugated pipe (1200), the water outlet end of the outer water jacket of the exhaust corrugated pipe (1200) is connected with the water inlet end of a water return pipeline (1106) of the exhaust.

5. The high-pressure common-rail explosion-proof diesel engine system according to claim 1, characterized in that the high-pressure common-rail system (200) includes a common-rail pipe (201), four oil outlet pipes (202) are connected to the common-rail pipe (201), the four oil outlet pipes (202) are respectively connected to four oil nozzles (203), an electromagnetic valve (204) is disposed on each oil nozzle, the oil nozzles (203) are installed on oil inlets of respective cylinders of the explosion-proof diesel engine main body (100), the common-rail pipe (201) is further connected to an oil inlet pipe (205) and an oil return pipe (206), the oil inlet pipe (205) and the oil return pipe (206) are respectively connected to an oil outlet and an oil return port of the oil pump (207), and the oil pump (207) is connected to the oil.

6. The high-pressure common rail explosion-proof diesel engine system according to claim 1, characterized in that a second water outlet end at the bottom of the heat dissipation water tank (1400) leads out an explosion-proof diesel engine body cooling water path (1300), and after passing through a plurality of components, the explosion-proof diesel engine body cooling water path (1300) returns to a second water return end at the top of the heat dissipation water tank (1400).

7. The high-pressure common-rail explosion-proof diesel engine system as claimed in claim 1, wherein the intercooling device (500) comprises an intercooling heat exchange chamber body (501), connecting angle steels (502) are arranged on the left and right sides of the intercooling heat exchange chamber body (501), the intercooling heat exchange chamber body (501) is connected to one surface, away from the explosion-proof diesel engine body (100), of the heat dissipation water tank (1400) through the two connecting angle steels (502), a first intercooling interface (503) and a second intercooling interface (504) are arranged on the top of the intercooling heat exchange chamber body (501), wherein the first intercooling interface (503) is an air inlet of the intercooling device (500), the first intercooling interface (503) is connected with a first supercharging air inlet pipe (701), the second intercooling interface (504) is an air outlet of the intercooling device (500), and the second intercooling interface (504) is connected with a second supercharging air inlet pipe (702, the caliber of the intercooling inlet connection section positioned at the top of the intercooling heat exchange cavity body (501) is gradually reduced from the intercooling first interface (503) inwards, and the caliber of the intercooling outlet connection section positioned at the top of the intercooling heat exchange cavity body (501) is gradually reduced from the intercooling second interface (503) inwards.

8. The high-pressure common-rail explosion-proof diesel engine system as claimed in claim 1, wherein the heat-dissipating water tank (1400) comprises a core (1401), the core (1401) is connected with a heat-dissipating water tank top shell (1402), a heat-dissipating water tank bottom shell (1403), a heat-dissipating water tank left side plate (1404) and a heat-dissipating water tank right side plate (1405) at the upper, lower, left and right sides thereof respectively, the heat-dissipating water tank left side plate (1404) and the heat-dissipating water tank right side plate (1405) are tightly attached to the left and right sides of the core (1401) respectively, the heat-dissipating water tank top shell (1402) covers the top of the core (1401) and the heat-dissipating water tank top shell (1402) is in a hollow state, an upper gasket (1406) is further arranged between the bottom of the heat-dissipating water tank top shell (1402) and the top of the core (1401), the top of the heat-dissipating water tank top shell (1402) is provided, the heat dissipation water tank bottom shell (1403) is erected at the bottom of the core body (1401) and the heat dissipation water tank bottom shell (1403) is in a hollow state, an engine oil cooler is arranged inside the heat dissipation water tank bottom shell (1403), a lower sealing gasket (1408) is further arranged between the heat dissipation water tank bottom shell (1403) and the bottom of the core body (1401), one side surface of the heat dissipation water tank bottom shell (1403) is provided with two water discharging switches (1409), the other side of the heat dissipation water tank bottom shell (1403) is connected with a first water discharging end and a second water discharging end, handles (1410) are arranged on the upper half sections of the outer side surfaces of the heat dissipation water tank left side plate (1404) and the heat dissipation water tank right side plate (1405), heat dissipation water tank supporting bases (1411) are arranged on the lower half sections of the outer side surfaces of the heat dissipation water tank left side plate (1404) and the heat dissipation water tank right side plate (1405), reinforcing ribs are arranged at the joints between, one side of the heat dissipation water tank, which is close to the explosion-proof diesel engine main body (100), is provided with an air guide cover (1412), and four sides of the air guide cover (1412) are respectively connected with the edges of a heat dissipation water tank top shell (1402), a heat dissipation water tank bottom shell (1403), a heat dissipation water tank left side plate (1404) and a heat dissipation water tank right side plate (1405).

9. The high-pressure common-rail explosion-proof diesel engine system as claimed in claim 1, wherein the tail gas treatment tank (600) comprises a tail gas treatment tank body (601), the right section in the tail gas treatment tank body (601) is an air inlet section, the left section in the tail gas treatment tank body (601) is an air outlet section, the air inlet section and the air outlet section are separated by a partition plate (602), the front end and the rear end of the partition plate (602) are respectively connected with the front inner side wall and the rear inner side wall of the tail gas treatment tank body (601), the upper end and the lower end of the partition plate (602) are respectively separated from the upper inner side wall and the lower inner side wall of the tail gas treatment tank body (601) by a certain distance, a floating ball (618) is arranged in the air outlet section of the tail gas treatment tank body (601), the lower end of the floating ball (618) is connected with a floating ball screw, moisturizing valve body (622) is connected in moisturizing connecting rod (621), and moisturizing valve body (622) is connected on the left side wall of tail gas treatment box (601) through moisturizing seat (623), and moisturizing joint (627) is connected to the outer end of moisturizing valve body (622), and the left side wall lower extreme of tail gas treatment box (601) is provided with drain outlet (624), is provided with piece formula ball valve (625) on drain outlet (624).

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