CN105201947B - Electrohydraulic reversing valve capable of maintaining valve position under hydraulic pressure - Google Patents
Electrohydraulic reversing valve capable of maintaining valve position under hydraulic pressure Download PDFInfo
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- CN105201947B CN105201947B CN201510675749.0A CN201510675749A CN105201947B CN 105201947 B CN105201947 B CN 105201947B CN 201510675749 A CN201510675749 A CN 201510675749A CN 105201947 B CN105201947 B CN 105201947B
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Abstract
The invention relates to an electrohydraulic reversing valve capable of maintaining valve position under hydraulic pressure, which comprises a main body valve, a first pilot solenoid valve and a second pilot solenoid valve, wherein a valve body hole is arranged in the valve body of the main body valve; a main valve core is arranged in the valve body hole in a sliding mode; one end of the main valve core is provided with a return spring; the valve body is provided with an oil supply port which is communicated with the valve body hole, a control oil port and a return oil port; the main valve core reciprocates, so that the main body valve is switched between the control oil state and return oil state; when the main valve body is in the control oil state, the return spring is compressed and is positioned in the valve body hole, and a valve position maintaining cavity is formed at the end of the main valve core away from the return spring; a valve position maintaining oil duct communicated with the valve position maintaining cavity is also arranged in the valve body; and the other end of the valve position maintaining oil duct is communicated with the control oil port through the valve body hole. The electrohydraulic reversing valve maintains the valve position of the main body valve by using hydraulic control, thereby lowering the electric power consumption of the electrohydraulic reversing valve and prolonging the service life of the electrohydraulic reversing valve.
Description
Technical field
The present invention relates to electrohydraulic control technology, more particularly to a kind of electro-hydraulic reversing valve of hydraulic pressure holding valve position.
Background technology
Hydraulicdirectional control valve is one of original paper of core in hydraulic system, its effect is control hydraulic oil conducting, cut-out and
Flow direction.Hydraulicdirectional control valve is classified according to maneuverability pattern, can be divided into manual type, motor driven, electromagnetic type, hydrodynamic, electro-hydraulic
Dynamic formula.The present invention relates to electro-hydraulic actuated hydraulic reversal valve, abbreviation electro-hydraulic reversing valve.
Existing electro-hydraulic reversing valve all configures one or two pilot solenoid valves, by controlling whether pilot solenoid valve powers
Realization body valve valve position switches.And the valve position of existing electro-hydraulic reversing valve needs pilot solenoid valve to continue when being maintained at oil-control state
Power supply, increased power consumption, reduces the service life of solenoid, and then reduce the service life of electro-hydraulic reversing valve,
Particularly need the long-term occasion for keeping even more so in the valve position of oil-control state.For example, used in Subsea Production Control System
Electro-hydraulic reversing valve, in the Oil/gas Well stable yields stage, the valve position of its oil-control state may need to keep several years without switching.
Thus, the present inventor proposes that a kind of hydraulic pressure keeps valve position by the experience and practice of being engaged in relevant industries for many years
Electro-hydraulic reversing valve, to overcome the defect of prior art.
The content of the invention
It is an object of the invention to provide a kind of hydraulic pressure keeps the electro-hydraulic reversing valve of valve position, solve first conductive in prior art
The problem that power consumption is high, solenoid service life is low during magnet valve continued power holding valve position, keeps leading using hydraulic control
The valve position of body valve, reduces electro-hydraulic reversing valve power consumption, improves the service life of electro-hydraulic reversing valve.
The object of the present invention is achieved like this, and a kind of hydraulic pressure keeps the electro-hydraulic reversing valve of valve position, including valve body and the
One pilot solenoid valve and the second pilot solenoid valve；It is provided with to be slided in valve body hole, the valve body hole in the valve body of the valve body and sets
Have a main valve plug, one end of the main valve plug is provided with back-moving spring, the valve body be provided with the oil-feed port of valve body hole conducting,
Control port and oil return opening, the main valve plug is moved back and forth makes the valve body switch between oil-control state and oil return state；
When the valve body is located at oil-control state, the oil-feed port is turned on the control port, and the oil-feed port and the control
Hydraulic fluid port is closed with the oil return opening；When the valve body is located at oil return state, the oil return opening is turned on the control port,
And the oil return opening and the control port are closed with the oil-feed port, the back-moving spring when main valve body is located at oil-control state
Compressed, valve position holding chamber is formed with away from one end of the back-moving spring in the valve body hole and in the main valve plug
Body, is additionally provided with the valve body and keeps the valve position of cavity conducting to keep oil circuit, the valve position to keep the another of oil circuit with the valve position
One end is turned on by the valve body hole with the control port.
In a better embodiment of the present invention, the valve body is two-bit triplet side valve type pilot operated directional control valve.
In a better embodiment of the present invention, the valve body hole includes that be provided with the back-moving spring first leads to
Hole, the first through hole is provided with the second through hole of aperture reduction, the first through hole and institute away from one end of the back-moving spring
State and first step portion is formed between the second through hole；The main valve plug includes that sealing is slidedly arranged on the first valve in the first through hole
Core section and sealing are slidedly arranged on the second valve element section in second through hole, between the first valve element section and the second valve element section
It is formed with second step portion, the first step portion, the second step portion, the side wall of the second valve element section and the valve body
The valve position is formed between inwall and keeps cavity.
In a better embodiment of the present invention, the valve position keeps one end of oil circuit to be arranged on the first through hole side
On wall, near the end in the first step portion.
In a better embodiment of the present invention, the side wall of the first valve element section is provided with cannelure, the annular
Annular space is formed between groove and the valve interior wall, the valve position keeps the other end of oil circuit to turn on the annular space；
When the valve body is located at oil-control state, the oil-feed port, the control port and the valve position keep oil circuit to pass through the ring
Shape space turns on；When the valve body is located at oil return state, the oil return opening, the control port and the valve position keep oil circuit
Turned on by the annular space.
The present invention a better embodiment in, the first valve element section near one end of the back-moving spring with it is described
The first sealing ring, the second sealing ring are arranged at intervals with side wall between cannelure, the first valve element section is located at the annular
The 3rd sealing ring, the 4th sealing ring, second valve element are arranged at intervals with side wall between groove and valve position holding cavity
Section is provided with the 5th sealing ring near the side wall of free end.
In a better embodiment of the present invention, it is provided with first pilot solenoid valve and is arranged in the reset bullet
The first gag lever post in spring；The second gag lever post being arranged in inside the valve body hole is provided with second pilot solenoid valve.
The present invention a better embodiment in, first gag lever post be tubular body, first pilot solenoid valve
Be provided with the first pilot control hydraulic fluid port, the first pilot control hydraulic fluid port outer end with first gag lever post insertion and integrally connected,
The side wall of first gag lever post is provided with multiple the first cloth oilholes with the first pilot control hydraulic fluid port conducting；Described second
Gag lever post is tubular body, and second pilot solenoid valve is provided with the second pilot control hydraulic fluid port, outside the second pilot control hydraulic fluid port
Hold with second gag lever post insertion and integrally connected.
In a better embodiment of the present invention, it is recessed that the end face of the free end of first gag lever post is provided with multiple first
Groove, the end face of the free end of second gag lever post is provided with multiple second grooves.
In a better embodiment of the present invention, guide's oil-feed port is additionally provided with the valve body of the valve body, it is described
The oil feeding line with guide's oil-feed port conducting is provided with the valve body of valve body, described oil feeding line one end is with described first first
First guide's oil-feed port conducting inside conductive magnet valve, inside the other end of the oil feeding line and second pilot solenoid valve
Second guide's oil-feed port conducting；
The oil return circuit with oil return opening conducting, described oil return circuit one end and institute are provided with the valve body of the valve body
The first guide's oil return opening conducting inside the first pilot solenoid valve is stated, the other end of the oil return circuit is first conductive with described second
Second guide's oil return opening conducting inside magnet valve.
From the above mentioned, the hydraulic pressure that the present invention is provided keeps the electro-hydraulic reversing valve of valve position, using hydraulic control retainer body valve
Valve position, reduce electro-hydraulic reversing valve power consumption, improve the service life of electro-hydraulic reversing valve；By guide in the electro-hydraulic reversing valve
Oil-feed port, the oil return opening of electromagnetic valve is respectively by guide's oil-feed port, the oil return on the valve inner loop and valve body of valve body
Mouth connection, overall structure is simple, easy to operate；The hydraulic pressure of the present invention keeps the electro-hydraulic reversing valve of valve position to be used directly for ocean
The compound electrohydraulic control system in oil and gas development field, is that the production domesticization of Subsea Production Control System lays the foundation.
Description of the drawings
The following drawings is only intended in schematic illustration and explanation is done to the present invention, is not delimit the scope of the invention.Wherein：
Fig. 1 a：For the structural representation of the electro-hydraulic reversing valve of the hydraulic pressure holding valve position of the present invention.
Fig. 1 b：For the schematic diagram of the electro-hydraulic reversing valve of the hydraulic pressure holding valve position of the present invention.
Fig. 2：For valve body oil-control state when Fig. 1 in A-A sectional views.
Fig. 3：For valve body oil return state when Fig. 1 in A-A sectional views.
Fig. 4：For B-B sectional views in Fig. 1.
Fig. 5：For C-C sectional views in Fig. 1.
Fig. 6：For D-D sectional views in Fig. 1.
Fig. 7 a：The first pilot solenoid valve structural representation in the electro-hydraulic reversing valve of valve position is kept for hydraulic pressure of the present invention.
Fig. 7 b：For E-E sectional views in Fig. 7 a.
Fig. 8 a：The second pilot solenoid valve structural representation in the electro-hydraulic reversing valve of valve position is kept for hydraulic pressure of the present invention.
Fig. 8 b：For F-F sectional views in Fig. 7 a.
Specific embodiment
In order to be more clearly understood to the technical characteristic of the present invention, purpose and effect, now control illustrates this
Bright specific embodiment.
As shown in Fig. 1 a, Fig. 1 b, Fig. 2, Fig. 3, the hydraulic pressure that the present invention is provided keeps the electro-hydraulic reversing valve 100 of valve position, including
The pilot solenoid valve 2 of valve body 1 and first and the second pilot solenoid valve 3, in the present embodiment, valve body 1 is two-bit triplet cunning
Valve type pilot operated directional control valve, the first pilot solenoid valve 2 and the second pilot solenoid valve 3 are two-bit triplet side valve type electric control reversing valve；
It is provided with to be slided in valve body hole 111, valve body hole 111 in the valve body 11 of valve body 1 and is provided with main valve plug 112, one end of main valve plug 112 sets
There is back-moving spring 12, valve body 11 is provided with oil-feed port 113, control port 114 and the oil return opening 115 turned on valve body hole 111, main
Valve element 111 is moved back and forth makes valve body 1 switch between oil-control state and oil return state；When valve body 1 is located at oil-control state, supply
Hydraulic fluid port 113 and control port 114 are turned on, oil-feed port 113 and control port 114 are closed with oil return opening 115；Valve body 1 is located at
During oil return state, oil return opening 115 and control port 114 are turned on, oil return opening 115 and control port 114 with the envelope of oil-feed port 113
Close, back-moving spring 12 is compressed when main valve body 1 is located at oil-control state, away from reset in valve body hole 111 and in main valve plug 112
One end of spring 12 is formed with valve position and keeps cavity 13, is additionally provided with valve body 11 and keeps the valve position of the conducting of cavity 13 to keep with valve position
Oil circuit 14, valve position keeps the other end of oil circuit 14 to turn on control port 114 by valve body hole 111.
Further, as shown in Figure 2 and Figure 3, valve body hole 111 includes being provided with the first through hole 1111 of back-moving spring 12, and first
Through hole 1111 is provided with the second through hole 1112 of aperture reduction, the through hole of first through hole 1111 and second away from one end of back-moving spring 12
First step portion 1113 is formed between 1112；Main valve plug 112 includes that sealing is slidedly arranged on the first valve element in first through hole 1111
Section 1121 and sealing are slidedly arranged on the second valve element section 1122 in the second through hole 1112, the first valve element section 1121 and the second valve element section
Second step portion 1123, first step portion 1113, second step portion 1123, the side of the second valve element section 1122 are formed between 1122
The valve position is formed between wall and the inwall of valve body 11 and keeps cavity 13.In the present embodiment, valve position keeps the one of oil circuit 14
End is arranged on the side wall of the first through hole 1111 and near the end in first step portion 1113.Further, such as Fig. 2, Fig. 3 institute
Show, the side wall of the first valve element section 1121 is provided with cannelure 116, and between cannelure 116 and the inwall of valve body 11 annular space is formed
117, valve position keeps the other end of oil circuit 14 to turn on annular space 117, and in the present embodiment, valve position keeps the another of oil circuit 14
End is correspondingly arranged with control port 114 on the hole wall of valve body hole 111；When valve body 1 is located at oil-control state, oil-feed port 113, control
Liquefaction mouth 114 and valve position keep the other end of oil circuit 14 to turn on by annular space 117；When valve body 1 is located at oil return state, oil return
Mouth 115, control port 114 and valve position keep the other end of oil circuit 14 to turn on by annular space 117.
Further, as shown in Figure 2 and Figure 3, the first valve element section 1121 near one end of back-moving spring 12 and cannelure 116 it
Between side wall on be arranged at intervals with the first sealing ring 41, the second sealing ring 42, the first valve element section 1121 is located at cannelure 116 and valve
The 3rd sealing ring 43, the 4th sealing ring 44 are arranged at intervals with side wall between position holding cavity 13, the second valve element section 1122 is leaned on
The side wall of nearly free end is provided with the 5th sealing ring 45.When valve body 1 is located at oil-control state, it is close that oil return opening 115 is located at the 3rd
Between seal 43, the 4th sealing ring 44, the 3rd sealing ring 43 seals off annular space 117 and oil return opening 115, the 4th sealing ring
44 seal isolation valve positions keep cavity 13 and oil return opening 115, so as to avoid controlling liquid into oil return opening 115；When valve body 1 is located at
During oil return state, oil-in 113 is located between the first sealing ring 41, the second sealing ring 42, the seal isolation ring of the second sealing ring 42
Shape space 117 and oil-in 113, so as to avoid controlling liquid into oil-in 113.
Further, as shown in Fig. 2, Fig. 3, Fig. 7 a, Fig. 7 b, Fig. 8 a, Fig. 8 b, it is provided with the first pilot solenoid valve 2 and wears
The first gag lever post 21 in the back-moving spring 12；It is provided with second pilot solenoid valve 3 and is arranged in the valve body hole 111
Second gag lever post 31 in portion.First gag lever post 21, the free end of the second gag lever post 31 are used for the limit of the axial movement of main valve plug 112
Position, when one end and the free end of the first gag lever post 21 of main valve plug 112 lean, valve body 1 reaches the valve position of requirement holding, protects
Hold the oil-control state of valve body 1；When main valve plug 112 is moved axially, until the other end offsets with the free end of the second gag lever post 31
Lean on, valve body 1 is in reset state.
Further, as shown in Fig. 7 b, Fig. 8 b, the first gag lever post 21 and the second gag lever post 31 are tubular body, and first is first conductive
Magnet valve 2 is provided with the first pilot control hydraulic fluid port 22, and the outer end of the first pilot control hydraulic fluid port 22 is with the insertion of the first gag lever post 21 and integrally connects
Connect.In order that be more uniformly stressed in the moving process of main valve plug 112, it is additionally provided with the side wall of the first gag lever post 21 multiple with first
First cloth oilhole 23 of the conducting of pilot control hydraulic fluid port 22.Second pilot solenoid valve 3 is provided with the second pilot control hydraulic fluid port 32, and second first
Lead the outer end of control port 32 and the insertion of the second gag lever post 31 and integrally connected.
Further, as shown in Fig. 7 b, Fig. 8 b, in order that being more uniformly stressed in the moving process of main valve plug 112, first is spacing
The end face of the free end of bar 21 is provided with multiple first grooves 211, and the end face of the free end of the second gag lever post 31 is provided with multiple second
Groove 311.
Further, as shown in Fig. 4, Fig. 5, Fig. 6, guide's oil-feed port 110, main body are additionally provided with the valve body 11 of valve body 1
The oil feeding line 118 with the conducting of guide's oil-feed port 110, in the present embodiment, the edge of oil feeding line 118 are provided with the valve body 11 of valve 1
Lead with first guide's oil-feed port 24 inside the first pilot solenoid valve 2 the longitudinally through setting of valve body 11, one end of oil feeding line 118
Logical, the other end of oil feeding line 118 is turned on second guide's oil-feed port 33 inside the second pilot solenoid valve 3；The valve of valve body 1
The oil return circuit 119 with the conducting of oil return opening 115 is provided with body 11, in the present embodiment, oil return circuit 119 is passed through along the longitudinal direction of valve body 11
Logical to arrange, the one end of oil return circuit 119 turns on first guide's oil return opening 25 inside the first pilot solenoid valve 2, oil return circuit 119
The other end turn on second guide's oil return opening 34 inside the second pilot solenoid valve 3.Thus, valve body 1 and first is first conductive
The pilot solenoid valve 3 of magnet valve 2 and second can simultaneously use same oil return circuit, the first pilot solenoid valve 2 and the second first conductive magnetism
Valve 3 can simultaneously use same oil supply loop, so that the overall structure of electro-hydraulic reversing valve 100 is simpler.
The hydraulic pressure that the present invention is provided keeps the electro-hydraulic reversing valve 100 of valve position, valve body 1 to have two kinds of working conditions, be respectively
(main body valve core is switched to makes valve body oil-feed port turn on valve body control port to oil-control state, now claims valve body to be in
Oil-control state, also known as valve position hold mode) and oil return state (main body valve core is switched to makes valve body control port and valve body
Oil return opening is turned on, and now claims valve body to be in oil return state)；First pilot solenoid valve 2 and the second pilot solenoid valve 3 also have two kinds
Working condition, is respectively that (pilot solenoid valve valve element is switched to makes pilot solenoid valve oil-feed port and pilot solenoid valve control to guide's state
Liquefaction mouth turn on, now claim pilot solenoid valve be in guide's state) and reset state (pilot solenoid valve valve element is switched to and makes guide
Solenoid valve control hydraulic fluid port is turned on pilot solenoid valve oil return opening, now claims pilot solenoid valve to be in reset state), first is first conductive
The valve element transposition action of the pilot solenoid valve 3 of magnet valve 2 and second is same as the prior art, will not be described here.
When valve body 1 switches to oil-control state by oil return state, the first pilot solenoid valve 2 is in reset state, and second first
The solenoid (prior art) of conductive magnet valve 3 is powered and switches to guide's state, first drain sequentially pass through guide's oil-feed port 110,
Oil feeding line 118, second guide's oil-feed port 33 and the second pilot control hydraulic fluid port 32 are entered in the second through hole 1112 of valve body 1,
The free end for promoting the valve element section 1122 of main valve plug 112 second is moved to the direction of back-moving spring 12, and back-moving spring is compressed, until the
After the end face abutting contact of the end face of the free end of one valve element section 1121 and the first gag lever post 21, main valve plug 112 stops axial shifting
It is dynamic.During main valve plug 112 is moved axially, oil-feed port 113, control port 114 and valve position keep oil circuit 14 empty by annular
Between 117 conductings, as shown in Fig. 2 valve body 1 switches to oil-control state, control liquid keeps oil circuit 14 to enter valve position guarantor through valve position
Cavity 13 is held, after valve position keeps the fluid pressure in cavity 13 stable, the power-off of the second pilot solenoid valve 3 switches to reset state,
Now, valve position keeps the control liquid in cavity 13 to act in the second step portion 1123 of main valve plug 112, receives main valve plug 112
To the active force for pointing to the direction of back-moving spring 12, the guarantor in the case where valve position keeps the pressure of the control liquid in cavity 13 to act on of valve body 1
Hold valve position oil-control state.Now, the power-off of the second pilot solenoid valve 3, the first pilot solenoid valve 2, the second pilot solenoid valve 3 are in
Reset state (off-position), it is not necessary to consume electric energy.
When valve body 1 switches to oil-control state by oil return state, the second pilot solenoid valve 3 is in reset state, and first first
The solenoid (prior art) of conductive magnet valve 2 is powered and switches to guide's state, first drain sequentially pass through guide's oil-feed port 110,
Oil feeding line 118, first guide's oil-feed port 24 and the first pilot control hydraulic fluid port 22 are entered in the first through hole 1111 of valve body 1,
The free end for promoting the valve element section 1121 of main valve plug 112 first is moved to the direction of the second through hole 1112, and back-moving spring gradually resets, the
First drain in two through holes 1112 promotes the second pilot controls of Jing hydraulic fluid port 32, second by the free end end face of the second valve element section 1122
Guide's oil return opening 34, oil return circuit 119 are back to oil return opening 115, and main valve plug 112 is up to the free end of the second valve element section 1122
Stop axial movement after the end face abutting contact of end face and the second gag lever post 31.During main valve plug 112 is moved axially, such as scheme
Shown in 3, oil return opening 115, control port 114 and valve position keep oil circuit 14 to turn on by annular space 117, and valve body 1 is switched to
Oil return state, valve position keeps the control liquid in cavity 13 to keep oil circuit 14 to enter oil return opening 115 through valve position, and back-moving spring 12 makes
Main valve plug 112 is maintained at oil return state, now, the power-off of the first pilot solenoid valve 2, first the 2, second first conductive magnetism of pilot solenoid valve
Valve 3 is in reset state (off-position).
Under conditions of given control pressure, the diameter dimension and parameter of the second valve element of reasonable selection section 1122 are needed therewith
The back-moving spring 12 of matching, when should ensure that valve body 1 is in oil-control state, the free end of the first valve element section 1121 and first is limited
Active force between the free end of bar 21 of position is more than 0, and retainer body valve 1 is in oil-control state, while ensureing that valve body 1 is in again
During oil return state, the active force between the free end and the free end of the second gag lever post 31 of the second valve element section 1122 is more than 0, keeps master
Body valve 1 is in oil return state.
From the above mentioned, the hydraulic pressure that the present invention is provided keeps the electro-hydraulic reversing valve of valve position, using hydraulic control retainer body valve
Valve position, reduce electro-hydraulic reversing valve power consumption, improve the service life of electro-hydraulic reversing valve；By guide in the electro-hydraulic reversing valve
Oil-feed port, the oil return opening of electromagnetic valve is respectively by guide's oil-feed port, the oil return on the valve inner loop and valve body of valve body
Mouth connection, overall structure is simple, easy to operate；The hydraulic pressure of the present invention keeps the electro-hydraulic reversing valve of valve position to be used directly for ocean
The compound electrohydraulic control system in oil and gas development field, is that the production domesticization of Subsea Production Control System lays the foundation.
Schematically specific embodiment of the invention is the foregoing is only, the scope of the present invention is not limited to.It is 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 should be belonged to.
Claims (10)
1. a kind of hydraulic pressure keeps the electro-hydraulic reversing valve of valve position, including valve body and the first pilot solenoid valve and the second first conductive magnetism
Valve；It is provided with to be slided in valve body hole, the valve body hole in the valve body of the valve body and is provided with main valve plug, one end of the main valve plug sets
There is back-moving spring, the valve body is provided with oil-feed port, control port and the oil return opening turned on the valve body hole, the main valve plug
Moving back and forth makes the valve body switch between oil-control state and oil return state；When the valve body is located at oil-control state, institute
State oil-feed port to turn on the control port, and the oil-feed port and the control port are closed with the oil return opening；It is described
When valve body is located at oil return state, the oil return opening is turned on the control port, and the oil return opening and the control port
Close with the oil-feed port, it is characterised in that：Back-moving spring is compressed when the main valve body is located at oil-control state, positioned at described
In valve body hole and it is formed with valve position away from one end of the back-moving spring in the main valve plug and keeps cavity, also sets in the valve body
Have and keep the valve position of cavity conducting to keep oil circuit, the valve position to keep the other end of oil circuit to pass through the valve body hole with the valve position
With control port conducting.
2. hydraulic pressure as claimed in claim 1 keeps the electro-hydraulic reversing valve of valve position, it is characterised in that：The valve body is two three
Logical side valve type pilot operated directional control valve.
3. hydraulic pressure as claimed in claim 1 keeps the electro-hydraulic reversing valve of valve position, it is characterised in that：The valve body hole includes arranging
There is the first through hole of the back-moving spring, the first through hole is provided with the second of aperture reduction away from one end of the back-moving spring
Through hole, between the first through hole and second through hole first step portion is formed with；The main valve plug is slidedly arranged on including sealing
The first valve element section and sealing in the first through hole is slidedly arranged on the second valve element section in second through hole, first valve element
Be formed with second step portion between section and the second valve element section, the first step portion, the second step portion, described second
The valve position is formed between the side wall and the valve interior wall of valve element section and keeps cavity.
4. hydraulic pressure as claimed in claim 3 keeps the electro-hydraulic reversing valve of valve position, it is characterised in that：The valve position keeps oil circuit
One end is arranged on the wall of the first through hole side, the end in the close first step portion.
5. hydraulic pressure as claimed in claim 4 keeps the electro-hydraulic reversing valve of valve position, it is characterised in that：The side of the first valve element section
Wall is provided with cannelure, and annular space is formed between the cannelure and the valve interior wall, and the valve position keeps the another of oil circuit
One end turns on the annular space；When the valve body is located at oil-control state, the oil-feed port, the control port and described
Valve position keeps oil circuit to turn on by the annular space；When the valve body is located at oil return state, the oil return opening, the control
Hydraulic fluid port and the valve position keep oil circuit to turn on by the annular space.
6. hydraulic pressure as claimed in claim 5 keeps the electro-hydraulic reversing valve of valve position, it is characterised in that：The first valve element section is close
The first sealing ring, the second sealing ring, institute are arranged at intervals with side wall between one end of the back-moving spring and the cannelure
State the first valve element section be arranged at intervals with the side wall that the cannelure and the valve position keep between cavity the 3rd sealing ring,
4th sealing ring, the second valve element section is provided with the 5th sealing ring near the side wall of free end.
7. hydraulic pressure as claimed in claim 1 keeps the electro-hydraulic reversing valve of valve position, it is characterised in that：First pilot solenoid valve
On be provided with the first gag lever post being arranged in the back-moving spring；It is provided with second pilot solenoid valve described in being arranged in
The second gag lever post inside valve body hole.
8. hydraulic pressure as claimed in claim 7 keeps the electro-hydraulic reversing valve of valve position, it is characterised in that：First gag lever post is pipe
Shape body, first pilot solenoid valve is provided with the first pilot control hydraulic fluid port, the first pilot control hydraulic fluid port outer end and described
One gag lever post insertion and integrally connected, the side wall of first gag lever post is provided with multiple leads with the first pilot control hydraulic fluid port
The first logical cloth oilhole；Second gag lever post is tubular body, and second pilot solenoid valve is provided with the second pilot control hydraulic fluid port,
The second pilot control hydraulic fluid port outer end is with second gag lever post insertion and integrally connected.
9. hydraulic pressure as claimed in claim 7 keeps the electro-hydraulic reversing valve of valve position, it is characterised in that：First gag lever post from
Multiple first grooves are provided with by the end face held, the end face of the free end of second gag lever post is provided with multiple second grooves.
10. hydraulic pressure as claimed in claim 1 keeps the electro-hydraulic reversing valve of valve position, it is characterised in that：The valve body of the valve body
On be additionally provided with guide's oil-feed port, be provided with the valve body of the valve body with guide's oil-feed port conducting oil feeding line, institute
State the first guide's oil-feed port conducting inside oil feeding line one end and first pilot solenoid valve, the oil feeding line it is another
Hold and the second guide's oil-feed port conducting inside second pilot solenoid valve；
The oil return circuit with oil return opening conducting, described oil return circuit one end and described the are provided with the valve body of the valve body
First guide's oil return opening conducting inside one pilot solenoid valve, the other end of the oil return circuit and second pilot solenoid valve
Internal second guide's oil return opening conducting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510675749.0A CN105201947B (en) | 2015-10-19 | 2015-10-19 | Electrohydraulic reversing valve capable of maintaining valve position under hydraulic pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510675749.0A CN105201947B (en) | 2015-10-19 | 2015-10-19 | Electrohydraulic reversing valve capable of maintaining valve position under hydraulic pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105201947A CN105201947A (en) | 2015-12-30 |
| CN105201947B true CN105201947B (en) | 2017-04-12 |
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ID=54949824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510675749.0A Active CN105201947B (en) | 2015-10-19 | 2015-10-19 | Electrohydraulic reversing valve capable of maintaining valve position under hydraulic pressure |
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| CN105740552B (en) * | 2016-02-02 | 2018-11-30 | 成都欧迅科技股份有限公司 | A kind of double electric low pressure reversing valve designs methods of deep-sea production tree electrichydraulic control valve group |
| CN108019535B (en) * | 2018-01-04 | 2023-11-24 | 中国石油大学(北京) | Two-position three-way reversing valve with valve core adopting sealing conical surface |
| CN110594471A (en) * | 2019-09-03 | 2019-12-20 | 海力达汽车科技有限公司 | Can reduce solenoid valve body subassembly of processing degree of difficulty |
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