CN109026874A - A kind of pressure-difference valve for the independent hydraulically controlled oil system of low-speed diesel engine - Google Patents
A kind of pressure-difference valve for the independent hydraulically controlled oil system of low-speed diesel engine Download PDFInfo
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- CN109026874A CN109026874A CN201810977948.0A CN201810977948A CN109026874A CN 109026874 A CN109026874 A CN 109026874A CN 201810977948 A CN201810977948 A CN 201810977948A CN 109026874 A CN109026874 A CN 109026874A
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- Prior art keywords
- valve
- pressure
- difference
- diesel engine
- oil
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/022—Flow-dividers; Priority valves
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/32—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting on a servo-mechanism or on a catch-releasing mechanism
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Driven Valves (AREA)
Abstract
A kind of pressure-difference valve for the independent hydraulically controlled oil system of low-speed diesel engine, including valve body, valve deck, valve rod, bellows, set spring and adjusting nut, its upstream connect the host of the marine low speed diesel engine from secondary cleaner outlet, the hydraulic oil outlet pipe of marine low speed diesel engine described in downstream connection, the pressure-difference valve is controlled by the oil pressure difference between the upstream and downstream and is opened and closed, to change the pressure of the independent hydraulically controlled oil system oil inlet, to maintain pressure difference constant between the upstream and downstream, guarantee that the oil inlet pressure of the independent hydraulically controlled oil system of the marine low speed diesel engine is stablized.The present invention can realize the automatic adjustment of independent hydraulically controlled oil system pressure at the first time, it ensure that the steady operation of hydraulic control unit (HCU) and hydraulic power unit (HPS), the manual operation that lubricating oil pressure fluctuates when avoiding starting has the advantages that simple structure, material and installation cost are cheap.
Description
Technical field
The present invention relates to a kind of components of marine diesel, and in particular to one kind is for the independent hydraulically controlled oil system of low-speed diesel engine
The pressure-difference valve of system, belongs to Diesel Engine Technique Field.
Background technique
In recent years, it is the greenhouse gas emission of control navigation transport, improves ship efficiency, International Maritime is to marine engine
The indexs such as discharge, oil consumption propose requirements at the higher level.With the update of technology, market is newly proposed ME series electronic controlled diesel, with
It reduces operating cost and reduces marine low speed diesel engine discharge.
This ME marine low speed diesel engine compared with traditional diesel engine, ME electronic controlled diesel eliminate chain-drive mechanism and
Camshaft mechanism drives HPS to mention using completely new hydraulic control unit (HCU) and hydraulic power unit (HPS) by crankshaft
For hydraulic oil as automatically controlled power.Traditional oil pump guide tube mechanism is replaced by completely new HCU, by control system drive magnetic valve
Movement, completes oil spout and exhaust, hydraulic oil provide power for oil spout and exhaust.New two units of HCU and HPS are to the clear of lubricating oil
Cleanliness require it is very high, the lubricating oil of two units be all is provided by lubricating oil sump tank, and entirely diesel engine all lubricating oil
It will be released in lubricating oil sump tank, therefore with the use of the raising of diesel engine strengthening degree and poor quality fuel oil, so that lubrication
The operating condition of oil is more and more poor, can make the control list of HPS and HCU by the same circulation Oil Tank fuel feeding together with entire diesel engine
There are security risks for member, to damage entire diesel engine；Further, since using the same lubricating oil sump tank, so that entire lubricating oil
The pressure of pipeline is consistent, this cannot meet marine low-speed diesel oil in underload to the fuel feeding requirement of HPS and HCU.For
This, present marine diesel begins to use independent hydraulically controlled oily oil supply system, but independent hydraulic oil oil supply system is due to being
It unites fairly simple, the starting pressure oscillation of pump is excessively high, causes excessively high oil pressure that two units can be prevented from stable work.
Summary of the invention
It is an object of the present invention to solve the lubricating oil of the independent hydraulic oil oil supply system of above-mentioned existing marine low speed diesel engine
The problem of pressure oscillation, provides a kind of pressure-difference valve for the independent hydraulically controlled oil system of low-speed diesel engine, with systems stabilisation
Oil pressure, it is ensured that hydraulic control unit (HCU) and hydraulic power unit (HPS) being capable of steady operations.
Based on above-mentioned purpose, the technical solution adopted by the present invention is as follows:
A kind of pressure-difference valve for the independent hydraulically controlled oil system of low-speed diesel engine, it is characterised in that: the pressure difference is adjusted
The upstream of valve connect the host of the marine low speed diesel engine from secondary cleaner outlet, marine low-speed diesel oil described in downstream connection
The hydraulic oil outlet pipe of machine, the pressure-difference valve are controlled by the oil pressure difference between the upstream and downstream and are opened and closed, thus
Change the pressure of the independent hydraulically controlled oil system oil inlet, to maintain pressure difference constant between the upstream and downstream, guarantees
The oil inlet pressure of the independent hydraulically controlled oil system of marine low speed diesel engine is stablized.
Further, the pressure-difference valve includes valve body, valve deck, valve rod, bellows, sets spring and adjusting nut,
The valve body, valve deck and bellows sequentially connect from top to bottom；
The valve body is equipped with the valve of the connection valve import and the connection hydraulic oil outlet pipe from secondary cleaner outlet
Outlet is equipped with the valve seat for being connected to the valve import and valve outlet between the valve import and valve outlet；
The bellows includes control diaphragm, bellows upper cover and bellows lower cover, and the control diaphragm is folded in pairing sealing and connects
Between the bellows upper cover connect and bellows lower cover, which is partitioned into not connected upper membrane cavity and bottom film chamber, the film
Box cover be equipped with the upper membrane cavity inlet connection being connect from secondary cleaner outlet, adopted with the oil pressure to the upstream
Sample is covered with bottom film chamber inlet connection under the bellows, is sampled with the oil pressure to the downstream；
The valve rod sequentially passes through the bellows from bottom to top and valve deck protrudes into the valve body, the upper end of the valve rod with it is described
Valve seat forms valve port, and middle section is fixedly connected with the control diaphragm；
The setting spring is placed on the valve rod and stretches out lower section under the bellows lower cover of the bellows, the adjusting spiral shell
Mother is tightened in the lower end of the valve rod and adjusts the pressure difference preset value of the pressure-difference valve by compressing the setting spring；
The oil pressure of the upstream and downstream of the pressure-difference valve is transferred to the upper membrane cavity and bottom film chamber respectively and acts on
The control diaphragm, wherein between oil pressure difference push the control diaphragm and the valve rod driven to move up and down, and then unlatching
Or the valve port is closed, to adjust the oil pressure difference at the valve entrance and valve outlet, guarantee the marine low speed diesel engine
The oil inlet pressure of independent hydraulically controlled oil system is stablized.
Further, the bellows is connect by filling cone and coupling nut with the valve deck.
Further, it is provided in the valve deck for pressure balanced bellows, which is placed in the valve
The periphery of bar.
Further, the upper membrane cavity inlet connection passes through prepulse pipe and the sampling from secondary cleaner outlet
Joint chair connection,
Further, the bottom film chamber inlet connection is connect by afterpulse pipe and the sampling of the hydraulic oil outlet pipe
Seat connection.
Further, the bottom film chamber inlet connection is directly connected to atmospheric environment.
Further, when the oil pressure difference between the upstream and downstream is greater than the pressure difference preset value, the valve port is opened
It opens, otherwise the valve port is closed.
Compared with prior art, the beneficial effects of the present invention are:
1. automation control --- the present invention does not need hand off fuel oil, can after setting pressure difference preset value
Ensure to realize the automatic adjustment of independent hydraulically controlled oil system pressure at the first time, ensure that hydraulic control unit (HCU) and hydraulic moves
Power unit (HPS) being capable of steady operation.
2. operating more safe and reliable --- the invention avoids the manual operations of lubricating oil pressure fluctuation when starting, reduce
Manually control loss caused by the frequent start-stop of independent hydraulically controlled cunning oil pump.
3. input cost is smaller --- the pressure-difference valve structure is simple, and material and installation cost are cheap.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is application state figure of the present invention in live hydraulic system.
Fig. 3 is the working principle of the invention figure.
In figure, 1-valve body, 2-valve decks, 3-valve seats, 4-valve rods, 5-bellowss, 6-bellows, 61-upper membrane cavities,
62-bottom film chambers, 7-control diaphragms, 8-setting springs, 9-adjusting nuts, 10-fillings are bored, 11-coupling nuts, on 12-
Membrane cavity inlet connection, 13-bottom film chamber inlet connections, 14-bellows upper covers, 15-bellows lower covers, 16-from secondary cleaner,
A-valve import, B-valve outlet.
Specific embodiment
The present invention is described in detail in the following with reference to the drawings and specific embodiments, but protection scope of the present invention is not limited to
Following embodiments.The equivalence changes and modification that all contents according to this specification are made, belong to present patent application
Technical scope.
Referring to Fig. 2, the upstream of the pressure-difference valve of the present invention for the independent hydraulically controlled oil system of low-speed diesel engine connects
Connect the host of the marine low speed diesel engine from 16 outlet of secondary cleaner, marine low speed diesel engine described in downstream connection it is hydraulic
Oil export pipe, the pressure-difference valve are controlled by the oil pressure difference between the upstream and downstream and are opened and closed, thus described in changing
The pressure of independent hydraulically controlled oil system oil inlet is guaranteed described peculiar to vessel with maintaining pressure difference constant between the upstream and downstream
The oil inlet pressure of the independent hydraulically controlled oil system of low-speed diesel engine is stablized.
Referring to Fig. 1, the pressure-difference valve includes valve body 1, valve deck 2, valve rod 4, bellows 6, setting spring 8 and adjusts
Nut 9；The valve body 1, valve deck 2 and bellows 6 sequentially connect from top to bottom, and the upper end of the bellows 2 passes through filling cone 10 and connection
Nut 11 is connect with the lower end of the valve deck 2.
The valve body 1 is equipped with valve import A and valve outlet B, and the valve import A connection outlet from secondary cleaner 16 is shown in
Fig. 2, valve outlet B connect the outlet of the hydraulic oil.It is equipped between the valve import A and valve outlet B and is connected to valve import A
With the valve seat 3 of valve outlet B.
It is provided in the valve deck 2 for pressure balanced bellows 5, which is placed on the outer of the valve rod 4
Week.The bellows 5 meets the unlatching of valve member under different mounting means (horizontal or be vertically arranged) by internal regulation.
The bellows 6 includes control diaphragm 7, bellows upper cover 14 and bellows lower cover 15.The control diaphragm 7 is folded in described
Between bellows upper cover 14 and bellows lower cover 15, hermetically pairing is connect the bellows upper cover 14 with bellows lower cover 15, the control diaphragm 7
The bellows 6 is partitioned into not connected upper membrane cavity 61 and bottom film chamber 62.The bellows upper cover 14 connects equipped with upper membrane cavity import
Fitting 12, membrane cavity inlet connection 12 is connect by prepulse pipe with the sampling joint chair from 16 outlet of secondary cleaner on this,
It is sampled with the oil pressure to the upstream.The bellows lower cover 15 is equipped with bottom film chamber inlet connection 13, to the downstream
Oil pressure sampled；The bottom film chamber inlet connection 13 is connect by afterpulse pipe and the sampling of the hydraulic oil outlet pipe
Seat connection or the bottom film chamber inlet connection 13 are directly connected to atmospheric environment.
The valve rod 4 sequentially passes through the bellows 6 from bottom to top and valve deck 2 protrudes into the valve body 1, the upper end of the valve rod 4
Valve port is formed with the valve seat 3, the middle section of the valve rod 4 is fixedly connected with the control diaphragm 7, and the lower section of the valve rod 4 stretches out institute
State the lower section of the bellows lower cover 15 of bellows 6.
The setting spring 8 is placed on the periphery of 4 lower section of valve rod, and the adjusting nut 9 is tightened under the valve rod 4
It holds and adjusts the pressure difference preset value for setting the pressure-difference valve by compressing the setting spring 8.
Fig. 3 is please referred to, the oil pressure of the pressure-difference valve upstream (from secondary cleaner 16) is transferred to by prepulse pipe
The upper membrane cavity 61 simultaneously acts on the control diaphragm 7, the oil pressure of the pressure-difference valve downstream (hydraulic oil outlet pipe) or big
Air pressure is transferred to the bottom film chamber 62 by afterpulse pipe and acts on the control diaphragm 7, between middle and upper reaches and downstream
Oil pressure Cha ⊿ p pushes the control diaphragm 7 and the valve rod 4 is driven to move up and down, and then opens or closes the valve port, to adjust
It saves at the valve import A with the oil pressure Cha ⊿ p value at valve outlet B, guarantees the independent hydraulically controlled oil system of the marine low speed diesel engine
Oil inlet pressure stablize.When oil pressure Cha ⊿ p between the upstream and downstream is greater than the pressure difference preset value, the valve
Mouth is opened, i.e., the described pressure-difference valve is opened, and otherwise the valve port is closed.
Operational process of the invention is as follows:
When marine low speed diesel engine is in starting state or normal operating condition, if the lubricating oil pressure of hydraulic oil oil supply system
Power fluctuates, then the pressure of front-end and back-end is transferred to the membrane cavity of the pressure-difference valve via pulse tube and acts on control
Diaphragm 7, which drives the valve rod 4 to move up and down, and then opens or closes the valve port, reaches control pressure difference
Purpose.Adjusting nut 9 sets pressure difference preset value by adjusting setting spring 8, so that the independent hydraulically controlled oil of marine low speed diesel engine
System oil inlet pressure remained steady enables marine low speed diesel engine steady to effectively protect hydraulic components
Fixed operation.
The present invention claims protection scope be not limited only to above-described embodiment, to those skilled in the art,
In the case where not departing from the principle and spirit of the invention, made any modification, equivalent replacement, obvious modification and change
Into being within the scope of protection of the invention.
Claims (8)
1. a kind of pressure-difference valve for the independent hydraulically controlled oil system of low-speed diesel engine, it is characterised in that: the pressure-difference valve
Upstream connect the marine low speed diesel engine host from secondary cleaner outlet, marine low speed diesel engine described in downstream connection
Hydraulic oil outlet pipe, the pressure-difference valve by between the upstream and downstream oil pressure difference control open and close, to change
Become the pressure of the independent hydraulically controlled oil system oil inlet, to maintain pressure difference constant between the upstream and downstream, guarantees institute
The oil inlet pressure for stating the independent hydraulically controlled oil system of marine low speed diesel engine is stablized.
2. the pressure-difference valve according to claim 1 for the independent hydraulically controlled oil system of low-speed diesel engine, it is characterised in that:
The pressure-difference valve includes valve body, valve deck, valve rod, bellows, setting spring and adjusting nut, the valve body, valve deck and film
Box sequentially connects from top to bottom；
The valve body is equipped with the valve outlet of the connection valve import and the connection hydraulic oil outlet pipe from secondary cleaner outlet,
The valve seat for being connected to the valve import and valve outlet is equipped between the valve import and valve outlet；
The bellows includes control diaphragm, bellows upper cover and bellows lower cover, and the control diaphragm is folded in pairing sealed connection
Between the bellows upper cover and bellows lower cover, which is partitioned into not connected upper membrane cavity and bottom film chamber, on the bellows
Be covered with the upper membrane cavity inlet connection being connect from secondary cleaner outlet, sampled with the oil pressure to the upstream,
It is covered with bottom film chamber inlet connection under the bellows, is sampled with the oil pressure to the downstream；
The valve rod sequentially passes through the bellows from bottom to top and valve deck protrudes into the valve body, the upper end of the valve rod and the valve seat
Valve port is formed, middle section is fixedly connected with the control diaphragm；
The setting spring is placed on the valve rod and stretches out lower section under the bellows lower cover of the bellows, the adjusting nut rotation
Tightly the pressure difference preset value of the pressure-difference valve is adjusted in the lower end of the valve rod and by compressing the setting spring；
The oil pressure of the upstream and downstream of the pressure-difference valve is transferred to the upper membrane cavity and bottom film chamber respectively and acts on described
Control diaphragm, wherein between oil pressure difference push the control diaphragm and the valve rod driven to move up and down, and then open or pass
The valve port is closed, to adjust the oil pressure difference at the valve entrance and valve outlet, guarantees that the marine low speed diesel engine is independent
The oil inlet pressure of hydraulic oil system is stablized.
3. the pressure-difference valve according to claim 2 for the independent hydraulically controlled oil system of low-speed diesel engine, it is characterised in that:
The bellows is connect by filling cone and coupling nut with the valve deck.
4. the pressure-difference valve according to claim 2 for the independent hydraulically controlled oil system of low-speed diesel engine, it is characterised in that:
It is provided in the valve deck for pressure balanced bellows, which is placed in the periphery of the valve rod.
5. the pressure-difference valve according to claim 2 for the independent hydraulically controlled oil system of low-speed diesel engine, it is characterised in that:
The upper membrane cavity inlet connection is connect with described from the sampling joint chair of secondary cleaner outlet by prepulse pipe.
6. the pressure-difference valve according to claim 2 for the independent hydraulically controlled oil system of low-speed diesel engine, it is characterised in that:
The bottom film chamber inlet connection is connect by afterpulse pipe with the sampling joint chair of the hydraulic oil outlet pipe.
7. the pressure-difference valve according to claim 2 for the independent hydraulically controlled oil system of low-speed diesel engine, it is characterised in that:
The bottom film chamber inlet connection is directly connected to atmospheric environment.
8. the pressure-difference valve according to claim 2 for the independent hydraulically controlled oil system of low-speed diesel engine, it is characterised in that:
When oil pressure difference between the upstream and downstream is greater than the pressure difference preset value, the valve port is opened, and otherwise the valve port closes
It closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810977948.0A CN109026874A (en) | 2018-08-27 | 2018-08-27 | A kind of pressure-difference valve for the independent hydraulically controlled oil system of low-speed diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810977948.0A CN109026874A (en) | 2018-08-27 | 2018-08-27 | A kind of pressure-difference valve for the independent hydraulically controlled oil system of low-speed diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109026874A true CN109026874A (en) | 2018-12-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810977948.0A Withdrawn CN109026874A (en) | 2018-08-27 | 2018-08-27 | A kind of pressure-difference valve for the independent hydraulically controlled oil system of low-speed diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109026874A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2229019Y (en) * | 1994-12-17 | 1996-06-12 | 鞍山自控仪表(集团)股份有限公司 | Self-force pressure regulating valve |
| CN200949691Y (en) * | 2006-09-05 | 2007-09-19 | 浙江派沃自控仪表有限公司 | Self-forcing pressure regulating valve |
| CN200949690Y (en) * | 2006-09-05 | 2007-09-19 | 浙江派沃自控仪表有限公司 | Self-forcing corrosion resistant pressure regulating valve |
| CN202176813U (en) * | 2011-07-28 | 2012-03-28 | 杭州良工阀门有限公司 | Self-operated pressure-regulating valve with dustproof function |
| CN202719225U (en) * | 2012-08-16 | 2013-02-06 | 卓旦春 | Reducing valve |
| CN104713734A (en) * | 2015-04-07 | 2015-06-17 | 上海中船三井造船柴油机有限公司 | Automatic measurement system and method for return oil of low-speed diesel engine for test run platform |
| CN105041406A (en) * | 2015-06-11 | 2015-11-11 | 上海中船三井造船柴油机有限公司 | Independent hydraulic oil supply system of marine low-speed diesel engine |
| CN206669053U (en) * | 2017-03-23 | 2017-11-24 | 江苏浩盛洁净系统有限公司 | A kind of bellows balanced type is relied on oneself pressure-difference valve |
-
2018
- 2018-08-27 CN CN201810977948.0A patent/CN109026874A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2229019Y (en) * | 1994-12-17 | 1996-06-12 | 鞍山自控仪表(集团)股份有限公司 | Self-force pressure regulating valve |
| CN200949691Y (en) * | 2006-09-05 | 2007-09-19 | 浙江派沃自控仪表有限公司 | Self-forcing pressure regulating valve |
| CN200949690Y (en) * | 2006-09-05 | 2007-09-19 | 浙江派沃自控仪表有限公司 | Self-forcing corrosion resistant pressure regulating valve |
| CN202176813U (en) * | 2011-07-28 | 2012-03-28 | 杭州良工阀门有限公司 | Self-operated pressure-regulating valve with dustproof function |
| CN202719225U (en) * | 2012-08-16 | 2013-02-06 | 卓旦春 | Reducing valve |
| CN104713734A (en) * | 2015-04-07 | 2015-06-17 | 上海中船三井造船柴油机有限公司 | Automatic measurement system and method for return oil of low-speed diesel engine for test run platform |
| CN105041406A (en) * | 2015-06-11 | 2015-11-11 | 上海中船三井造船柴油机有限公司 | Independent hydraulic oil supply system of marine low-speed diesel engine |
| CN206669053U (en) * | 2017-03-23 | 2017-11-24 | 江苏浩盛洁净系统有限公司 | A kind of bellows balanced type is relied on oneself pressure-difference valve |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181218 |
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| WW01 | Invention patent application withdrawn after publication |