CN104595530B - Pressure-regulating device for dual-fuel engine - Google Patents
Pressure-regulating device for dual-fuel engine Download PDFInfo
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- CN104595530B CN104595530B CN201510044606.XA CN201510044606A CN104595530B CN 104595530 B CN104595530 B CN 104595530B CN 201510044606 A CN201510044606 A CN 201510044606A CN 104595530 B CN104595530 B CN 104595530B
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- pressure
- described valve
- valve block
- regulating device
- valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
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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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
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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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a pressure-regulating device for a dual-fuel engine. The pressure-regulating device comprises a valve body, wherein a valve base is arranged at one end in the valve body; a valve core is arranged on the inner side of the valve base; a valve block is arranged on the inner side of the valve core; an outer peripheral surface of the valve block is in sealing fit with an inner peripheral surface of the valve body; an end cover is arranged at the other end in the valve body; an oil pressure chamber is arranged on an inner end face of the end cover; an oil inlet is formed in an outer end face of the end cover; a separating ring is raised in the chamber; a neck part of the valve core is in sealing fit with the separating ring; a pressure-relieving channel is arranged in the valve block; the top end of the valve core is in sealing fit with an inlet of the pressure-relieving channel; a pressure-regulating gas inlet, a burning gas supply port and a pressure-relieving port are respectively arranged in the valve body; a valve core displacement pressure-regulating device is arranged between the valve core and the valve base; a valve block displacement pressure-regulating device is arranged between the valve block and the valve body. The pressure-regulating device provided by the invention can regulate the natural gas pressure in real time according to the pressure of diesel oil, so that the natural gas pressure can meet the requirement for the practical working condition of the engine.
Description
Technical field
The present invention relates to technical field of engines, more particularly, to a kind of dual fuel engine pressure-regulating device.
Background technology
For dual fuel engine, the fuel that generally it uses is bavin oil and gas.The pressure regulation technology of diesel oil is highly developed, can quickly adjust diesel pressure as needed to specified pressure, but the pressure regulation technology of natural gas needs to improve further.
Content of the invention
The technical problem to be solved is that offer one kind can be according to diesel pressure real-time regulation gas pressure, gas pressure is enable to meet electromotor actual condition demand and changed according to the change of operating mode, thus improving the dynamic property of electromotor and the dual fuel engine pressure-regulating device of economy.
For solving above-mentioned technical problem, the technical scheme is that：Dual fuel engine pressure-regulating device, including the valve body with insertion chamber, one end sealing in described valve body is provided with valve seat, slides axially and be provided with valve element inside described valve seat, described valve element fit inside is provided with valve block, and the outer peripheral face of described valve block is coordinated with the inner circumferential face seal of described valve body；In described valve body, other end sealing is provided with end cap, is arranged with oil pressure chamber, the outer face of described end cap is communicated with the oil-in in described oil pressure chamber in the inner face of described end cap；Described chamber is projecting inward to be provided with spacer ring, and the cervical region of described valve element is coordinated with described spacer ring sealing and defines the pressure regulation inlet chamber positioned at described spacer ring both sides and burning respectively and supply air cavity；The pressure release passage for air cavity for the described burning is communicated with described valve block, the top of described valve element is coordinated with the inlet seal of described pressure release passage；The outer surface of described valve body is respectively equipped with and connects described pressure regulation inlet chamber, described burning supplies air cavity and the pressure regulation air inlet of described pressure release passage, burning air supply opening and pressure relief opening；It is provided with spool displacement pressure-regulating device between described valve element and described valve seat, between described valve block and described valve body, be provided with valve block displacement and pressure adjusting means.
As preferred technical scheme, described spool displacement pressure-regulating device includes the valve core rod that described valve element bottom is provided with, it is provided with the gathering sill being slidably matched with described valve core rod inside described valve seat, spool displacement is arranged with described valve core rod and adjusts spring, the two ends that described spool displacement adjusts spring bear against the bottom with described valve element inside described valve seat.
As the improvement to technique scheme, described valve seat outer peripheral face is provided with screw thread, and described valve seat is tightly connected with described valve body screw thread.
As the improvement to technique scheme, described valve block displacement and pressure adjusting means includes the valve block bar that is provided with of one end away from described valve element for the described valve block, and described valve block bar stretches into described oil pressure intracavity, and the top of described valve block bar is provided with baffle plate；It is provided with block positioned at described valve block away from the side of described valve element in described valve body, described valve block bar is arranged with valve block displacement and adjusts spring, the two ends that described valve block displacement adjusts spring bear against on described block and described baffle plate.
As the improvement to technique scheme, described valve block bar passes through described baffle plate and is threaded with adjusting nut.
As the improvement to technique scheme, between the outer peripheral face of described valve block and the inner peripheral surface of described valve body, it is provided with sealing ring.
As the improvement to technique scheme, described pressure release passage includes the internal channel within located at described valve block and the pressure-releasing chamber on described valve block outer peripheral face, and described pressure-releasing chamber is connected with described pressure relief opening.
Due to employing technique scheme, dual fuel engine pressure-regulating device, including the valve body with insertion chamber, in described valve body, one end sealing is provided with valve seat, slide axially inside described valve seat and be provided with valve element, described valve element fit inside is provided with valve block, and the outer peripheral face of described valve block is coordinated with the inner circumferential face seal of described valve body；In described valve body, other end sealing is provided with end cap, is arranged with oil pressure chamber, the outer face of described end cap is communicated with the oil-in in described oil pressure chamber in the inner face of described end cap；Described chamber is projecting inward to be provided with spacer ring, and the cervical region of described valve element is coordinated with described spacer ring sealing and defines the pressure regulation inlet chamber positioned at described spacer ring both sides and burning respectively and supply air cavity；The pressure release passage for air cavity for the described burning is communicated with described valve block, the top of described valve element is coordinated with the inlet seal of described pressure release passage；The outer surface of described valve body is respectively equipped with and connects described pressure regulation inlet chamber, described burning supplies air cavity and the pressure regulation air inlet of described pressure release passage, burning air supply opening and pressure relief opening；It is provided with spool displacement pressure-regulating device between described valve element and described valve seat, between described valve block and described valve body, be provided with valve block displacement and pressure adjusting means；The invention has the advantages that：The pressure for air cavity for the burning is adjusted by the pressure in described oil pressure chamber, and maintain a relatively stable pressure differential, burning can be with the pressure real-time change of oil pressure intracavity for the pressure of air cavity, combustion gas pressure is made to disclosure satisfy that the demand of electromotor actual condition and be changed according to the change of operating mode, such that it is able to improve dynamic property, the economy of electromotor, and be conducive to optimizing the discharge performance of electromotor.
Brief description
The following drawings is only intended to, in doing schematic illustration and explanation to the present invention, not delimit the scope of the invention.Wherein：
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the A-A of Fig. 1 to sectional view；
Fig. 3 is the schematic perspective view of the embodiment of the present invention.
In figure：1- valve body；11- spacer ring；12- pressure regulation inlet chamber；13- burning supplies air cavity；14- pressure regulation air inlet；15- burning air supply opening；16- pressure relief opening；17- block；2- valve seat；21- gathering sill；3- valve element；31- top；32- cervical region；33- valve core rod；4- valve block；41- entrance；42- internal channel；43- pressure-releasing chamber；44- valve block bar；45- baffle plate；5- end cap；51- oil pressure chamber；52- oil-in；6- spool displacement adjusts spring；7- valve block displacement adjusts spring；8- adjusting nut；9- sealing ring.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is expanded on further.In the following detailed description, by way of explanation, only describe some one exemplary embodiment of the present invention.Undoubtedly, those of ordinary skill in the art will be consequently realised that, in the case of without departing from the spirit and scope of the present invention, can by with various different in the way of described embodiment is modified.Therefore, accompanying drawing and description are inherently illustrative, rather than are used for limiting scope of the claims.
As shown in Figure 1, Figure 2 and Figure 3, dual fuel engine pressure-regulating device, including the valve body 1 with insertion chamber, one end sealing in described valve body 1 is provided with valve seat 2, and described valve seat 2 outer peripheral face is provided with screw thread, and described valve seat 2 is connected with described valve body 1 thread seal；Slide axially inside described valve seat 2 and be provided with valve element 3, described valve element 3 fit inside is provided with valve block 4, the outer peripheral face of described valve block 4 is coordinated with the inner circumferential face seal of described valve body 1；In described valve body 1, other end sealing is provided with end cap 5, is arranged with oil pressure chamber 51, the outer face of described end cap 5 is communicated with the oil-in 52 in described oil pressure chamber 51 in the inner face of described end cap 5；Described chamber is projecting inward to be provided with spacer ring 11, and the cervical region 32 of described valve element 3 is coordinated with described spacer ring 11 sealing and defines the pressure regulation inlet chamber 12 positioned at described spacer ring 11 both sides and burning respectively and supply air cavity 13；The pressure release passage for air cavity 13 for the described burning is communicated with described valve block 4, the top 31 of described valve element 3 is coordinated with entrance 41 sealing of described pressure release passage；The outer surface of described valve body 1 is respectively equipped with and connects described pressure regulation inlet chamber 12, described burning supplies air cavity 13 and pressure regulation air inlet 14, burning air supply opening 15 and the pressure relief opening 16 of described pressure release passage；Described pressure release passage includes the internal channel 42 within located at described valve block 4 and the pressure-releasing chamber 43 on described valve block 4 outer peripheral face, and described pressure-releasing chamber 43 is connected with described pressure relief opening 16；It is provided with spool displacement pressure-regulating device between described valve element 3 and described valve seat 2, between described valve block 4 and described valve body 1, be provided with valve block displacement and pressure adjusting means.
In the present embodiment, described spool displacement pressure-regulating device includes the valve core rod 33 that described valve element 3 bottom is provided with, it is provided with the gathering sill 21 being slidably matched with described valve core rod 33 inside described valve seat 2, spool displacement is arranged with described valve core rod 33 and adjusts spring 6, the two ends that described spool displacement adjusts spring 6 bear against the bottom in described valve seat 2 inner side and described valve element 3.
In the present embodiment, described valve block displacement and pressure adjusting means includes the valve block bar 44 that is provided with of one end away from described valve element 3 for the described valve block 4, and described valve block bar 44 stretches in described oil pressure chamber 51, and the top of described valve block bar 44 is provided with baffle plate 45；It is provided with block 17 positioned at described valve block 4 away from the side of described valve element 3 in described valve body 1, described valve block bar 44 is arranged with valve block displacement and adjusts spring 7, the two ends that described valve block displacement adjusts spring 7 bear against on described block 17 and described baffle plate 45.
Described valve block bar 44 passes through described baffle plate 45 and is threaded with adjusting nut 8, by adjusting nut 8, spring 7 can be adjusted with the valve block displacement between precommpression block 17 and baffle plate 45, thus obtaining the basic oil pressure chamber 51 pressure and burning pressure difference value for air cavity 13 pressure；For improving sealing fiting effect, between the outer peripheral face of described valve block 4 and the inner peripheral surface of described valve body 1, it is provided with sealing ring 9.
Again as shown in Figure 1 and Figure 2, the operation principle of the present invention is as follows：
Under normal circumstances, diesel oil enters oil pressure chamber 51 by oil-in 52, and high-pressure natural gas enter pressure regulation inlet chamber 12 by pressure regulation air inlet 14, and due to the cervical region 32 of valve element 3 and the sealing cut-off effect of valve body 1 inner split ring 11, natural gas cannot be introduced into burning and supplies air cavity 13.When the pressure in oil pressure chamber 51 is more than the pressure that burning supplies air cavity 13, the compression stress overcoming valve block displacement to adjust spring 7 is pushed away movable valve block 4 to left movement by diesel pressure, valve element 3 is encountered after valve block 4 motion one segment distance, and form sealing with the end 31 of valve element 3, now diesel pressure also needs the compression stress overcoming spool displacement to adjust spring 6 to push away movable valve block 4 together with valve element 3 to left movement, once valve element 3 is to left movement, sealing surface between valve element 3 cervical region 32 and valve body 1 is destroyed, high-pressure gas in pressure regulation inlet chamber 12 enter burning and supply air cavity 13, burning raises rapidly for the pressure of air cavity 13.When burning adjusts the compression stress sum of spring 7 just over oil pressure chamber 51 pressure for the pressure of air cavity 13 with spool displacement regulation spring 6 and displacement of valve rod, valve element 3 and valve block 4 move right, and re-form sealing between valve element 3 and valve body 1.Natural gas after pressure regulation passes through the air supply opening 15 entrance engine combustion that burns, because burning is for the continuous consumption of natural gas in air cavity 13, burning can be again less than the pressure in oil pressure chamber 51 for the pressure of air cavity 13 and the compression stress sum of spool displacement regulation spring 6 and displacement of valve rod regulation spring 7, valve element 3 and valve block 4 are to left movement, sealing surface between valve element 3 and valve body 1 is destroyed, high-pressure gas in pressure regulation inlet chamber 12 are again introduced into burning and supply air cavity 13, and burning is for the pressure rise of air cavity 13.So move in circles, oil pressure chamber 51 pressure, burning are for air cavity 13 pressure, spool displacement adjusts spring 6 and displacement of valve rod adjusts the pressure initiation dynamic equilibrium of spring 7.
Macroscopically, burning is equal to the pressure in oil pressure chamber 51 for the pressure of air cavity 13 and the compression stress sum of spool displacement regulation spring 6 and displacement of valve rod regulation spring 7, when the pressure rise when oil pressure chamber 51 and the pressure less than pressure regulation inlet chamber 12, burning also increases for the pressure of air cavity 13.When the reduced pressure in oil pressure chamber 51, in the presence of burning adjusts spring 7 compression stress for air cavity 13 pressure and spool displacement regulation spring 6, displacement of valve rod, valve element 3 and valve block 4 move right, and form sealing between valve element 3 and valve body 1.If burning adjusts spring 7 compression stress sum still greater than oil pressure chamber 51 pressure for air cavity 13 pressure and displacement of valve rod, valve block 4 continues to move right, and the sealing between valve element 3 and valve block 4 is destroyed；The internal channel 42 that burning is passed through for the high-pressure gas in air cavity 13 within valve block 4 enters pressure-releasing chamber 43, and gushes via pressure relief opening 16, and burning reduces rapidly for the pressure of air cavity 13.After burning adjusts, with displacement of valve rod, the pressure that spring 7 compression stress sum is less than oil pressure chamber 51 for the pressure of air cavity 13, valve block 4, to left movement, re-forms sealing between valve element 3 and valve block 4, thus reducing the effect for pressure in air cavity 13 for the burning.Due to the position-limiting action of block 17, valve block 4 at most moves right and contacts to block 17.
In sum, the present invention can be according to diesel pressure real-time regulation gas pressure, so that gas pressure is met electromotor actual condition demand and changed according to the change of operating mode, such that it is able to improve dynamic property, the economy of electromotor, and be conducive to optimizing the discharge performance of electromotor.
The foregoing is only the schematic specific embodiment of the present invention, be not limited to the scope of the present invention.Any those skilled in the art, done equivalent variations and modification on the premise of the design without departing from the present invention and principle, the scope of protection of the invention all should be belonged to.
Claims (7)
1. dual fuel engine pressure-regulating device, including the valve body with insertion chamber it is characterised in that：In described valve body, one end sealing is provided with valve seat, slides axially and be provided with valve element inside described valve seat, and described valve element fit inside is provided with valve block, and the outer peripheral face of described valve block is coordinated with the inner circumferential face seal of described valve body；In described valve body, other end sealing is provided with end cap, is arranged with oil pressure chamber, the outer face of described end cap is communicated with the oil-in in described oil pressure chamber in the inner face of described end cap；Described chamber is projecting inward to be provided with spacer ring, and the cervical region of described valve element is coordinated with described spacer ring sealing and defines the pressure regulation inlet chamber positioned at described spacer ring both sides and burning respectively and supply air cavity；The pressure release passage for air cavity for the described burning is communicated with described valve block, the top of described valve element is coordinated with the inlet seal of described pressure release passage；The outer surface of described valve body is respectively equipped with and connects described pressure regulation inlet chamber, described burning supplies air cavity and the pressure regulation air inlet of described pressure release passage, burning air supply opening and pressure relief opening；It is provided with spool displacement pressure-regulating device between described valve element and described valve seat, between described valve block and described valve body, be provided with valve block displacement and pressure adjusting means.
2. dual fuel engine pressure-regulating device as claimed in claim 1 it is characterised in that：Described spool displacement pressure-regulating device includes the valve core rod that described valve element bottom is provided with, it is provided with the gathering sill being slidably matched with described valve core rod inside described valve seat, spool displacement is arranged with described valve core rod and adjusts spring, the two ends that described spool displacement adjusts spring bear against the bottom with described valve element inside described valve seat.
3. dual fuel engine pressure-regulating device as claimed in claim 2 it is characterised in that：Described valve seat outer peripheral face is provided with screw thread, and described valve seat is tightly connected with described valve body screw thread.
4. dual fuel engine pressure-regulating device as claimed in claim 1 it is characterised in that：Described valve block displacement and pressure adjusting means includes the valve block bar that is provided with of one end away from described valve element for the described valve block, and described valve block bar stretches into described oil pressure intracavity, and the top of described valve block bar is provided with baffle plate；It is provided with block positioned at described valve block away from the side of described valve element in described valve body, described valve block bar is arranged with valve block displacement and adjusts spring, the two ends that described valve block displacement adjusts spring bear against on described block and described baffle plate.
5. dual fuel engine pressure-regulating device as claimed in claim 4 it is characterised in that：Described valve block bar passes through described baffle plate and is threaded with adjusting nut.
6. dual fuel engine pressure-regulating device as claimed in claim 1 it is characterised in that：It is provided with sealing ring between the outer peripheral face of described valve block and the inner peripheral surface of described valve body.
7. the dual fuel engine pressure-regulating device as described in claim 1 to 6 any one claim it is characterised in that：Described pressure release passage includes the internal channel within located at described valve block and the pressure-releasing chamber on described valve block outer peripheral face, and described pressure-releasing chamber is connected with described pressure relief opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510044606.XA CN104595530B (en) | 2015-01-27 | 2015-01-27 | Pressure-regulating device for dual-fuel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510044606.XA CN104595530B (en) | 2015-01-27 | 2015-01-27 | Pressure-regulating device for dual-fuel engine |
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| Publication Number | Publication Date |
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| CN104595530A CN104595530A (en) | 2015-05-06 |
| CN104595530B true CN104595530B (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510044606.XA Active CN104595530B (en) | 2015-01-27 | 2015-01-27 | Pressure-regulating device for dual-fuel engine |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108620223B (en) * | 2018-05-02 | 2020-10-02 | 嘉兴市明达生物能源有限公司 | Take pressure regulating device's wood crusher |
| CN109519589A (en) * | 2018-12-13 | 2019-03-26 | 英嘉动力科技无锡有限公司 | A kind of novel pressure regulating valve structure |
| CN113719360A (en) * | 2021-08-25 | 2021-11-30 | 一汽解放汽车有限公司 | Supply pressure adjusting device |
| WO2023147654A1 (en) * | 2022-02-01 | 2023-08-10 | Westport Fuel Systems Canada Inc. | Differential pressure regulator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2614669B1 (en) * | 1987-04-29 | 1989-07-13 | Gratzmuller Claude | THREE-WAY HYDRAULIC VALVE |
| DE4030424A1 (en) * | 1990-09-26 | 1992-04-02 | Bosch Gmbh Robert | PRESSURE LIMIT VALVE, IN PARTICULAR FOR HYDRAULIC VEHICLE BRAKE SYSTEMS |
| FR2776045B3 (en) * | 1998-03-13 | 2000-05-26 | Ind Mecanique Pour Les Fluides | THREE-WAY VALVE FOR PRESSURE REGULATION OF FLUID, ESPECIALLY OF HIGH PRESSURE FLUID |
| CN202418777U (en) * | 2012-02-14 | 2012-09-05 | 罗达莱克斯阀门(上海)有限公司 | Pressure regulator for gas supply system of natural gas vehicle engine |
| CN204083399U (en) * | 2014-10-23 | 2015-01-07 | 潍坊力创电子科技有限公司 | Dual Drive gas spray valve |
| CN204420205U (en) * | 2015-01-27 | 2015-06-24 | 潍柴西港新能源动力有限公司 | Duel fuel engine pressure regulator |
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