CN201436406U - Single-acting hydraulic actuator for switching on or off the valve - Google Patents
Single-acting hydraulic actuator for switching on or off the valve Download PDFInfo
- Publication number
- CN201436406U CN201436406U CN200920072598XU CN200920072598U CN201436406U CN 201436406 U CN201436406 U CN 201436406U CN 200920072598X U CN200920072598X U CN 200920072598XU CN 200920072598 U CN200920072598 U CN 200920072598U CN 201436406 U CN201436406 U CN 201436406U
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- valve
- valve body
- rotating shaft
- fluid port
- hydraulic fluid
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Abstract
The utility model discloses a single-acting hydraulic actuator for switching on or off the valve, wherein, two enclosed cavities and a mounting cavity are arranged in a valve body, a rotating shaft with gear and a rack engaged with the gear are arranged in the mounting cavity, the two ends of the rack extend to the insides of the two enclosed cavities and support against pistons, the two enclosed cavities are respectively provided with oil ports and are respectively communicated with the oil feeding pipe and the output end of a capsule type accumulator, the capsule type accumulator is provided with an inflation valve and a pressure-measuring joint, the valve body is also provided with a bypass valve for communicating the two enclosed cavities of the valve body, and the valve body is also provided with a valve connecting flange for connecting the controlled valve. When the hydraulic system fails, i.e., the nonpressure oil enters into the single-acting hydraulic actuator through the oil feed pipe, the present actuator can switch off the valve by means of the pressure oil stored in the capsule type accumulator rather than the traditional butterfly spring or coil spring.
Description
Technical field
The utility model relates to a kind of single-acting hydraulic actuator that is used for the open and close valve.
Background technique
Usually hydraulic system provides power with motor, make oil hydraulic pump that mechanical energy is converted into the pressure energy, promote hydraulic oil, by controlling the flow direction that various valves change hydraulic oil, thereby promote the action that oil hydraulic cylinder is made different strokes, different direction, finish the different action needs of various device.
Needed element mainly contains dynamical element, executive component, control unit, auxiliary element etc. in the hydraulic system.Wherein dynamical element is the parts that produce power for hydraulic system, mainly comprises various oil hydraulic pumps.
Executive component is to be used for carrying out the device that the hydraulic pressure that oil hydraulic pump is provided can be transformed into mechanical energy, mainly comprises oil hydraulic cylinder and oil hydraulic motor.Oil hydraulic motor is a device of doing opposite work with oil hydraulic pump, just can be converted to mechanical energy to pressure, thus externally acting.
The control that the size of the direction that the controlling liquid that is used for control unit flows, the height of pressure and flow is expected is to satisfy specific job requirement.Exactly because the flexibility of control unit makes hydraulic system can finish the different action needs of various device.
Except above-mentioned element, hydraulic system also needs the hydraulic pressure auxiliary element.These elements comprise pipeline, pipe joint, fuel tank, filter, accumulator and seal arrangement.By each above components and parts, just can make up a hydraulic system.So-called hydraulic system is exactly the control corresponding loop that constitutes by various hydraulic components.
Usually in hydraulic system, controller is controlled the action of single-acting hydraulic actuator, and the valve position state of single-acting hydraulic actuator is by pressure switch, flow switch indication.At present the Placement of single-acting hydraulic actuator is as shown in Figure 1 in hydraulic control system, single-acting hydraulic actuator 2 is installed on the hydraulic control scene, the controller 1 of single-acting hydraulic actuator 2 is installed in the control room, connect by pipeline between the two, pressure switch 4 and flow switch 3 are serially connected with between single-acting hydraulic actuator 2 and the controller 1, and single-acting hydraulic actuator 2 is carried out opening or closing of valve 5.
In hydraulic system, the single-acting hydraulic actuator adopts the mechanical type spring reset usually, and as butterfly spring or helical spring, in order to reach the moment of torsion of throttle down, the overall weight and the volume of mechanical type spring are bigger, are unfavorable for the installation and the debugging of equipment.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of single-acting hydraulic actuator that is used for the open and close valve, when hydraulic system breaks down, when promptly not having pressure oil and entering into the single-acting hydraulic actuator, rely on the pressure oil that stores in the bladder type hydropneumatic accumulator with valve closing, thereby substitute traditional mechanical type spring with valve closing, be convenient to rigging up and debugging, improve the reliability of hydraulic system.
For solving the problems of the technologies described above, the utility model is used to out, the single-acting hydraulic actuator of closing valve comprises valve body, oil inlet pipe, driving mechanism, bypass valve, valve adpting flange and capsule formula accumulator, described valve body is provided with first hydraulic fluid port and second hydraulic fluid port, described oil inlet pipe connects described first hydraulic fluid port, have one in the described valve body cavity and two closed cavities are installed, described two closed cavities are communicated with first hydraulic fluid port and second hydraulic fluid port respectively, described driving mechanism is located in the installation cavity and closed cavity of described valve body, described driving mechanism comprises gear, rotating shaft, tooth bar and two pistons, described gear is located in the rotating shaft, both are as a whole, described gear and rotating shaft are located at described valve body and are installed in the cavity, described tooth bar be positioned at described valve body install cavity and with described gear engagement, described tooth bar two ends lay respectively in two closed cavities of described valve body, and described two pistons lay respectively in two closed cavities of described valve body and are butted on described tooth bar two ends; Described capsule formula accumulator comprises air bag, pressure measuring tie-in and gas charging valve, described gas charging valve is located at described air bag one end, the other end of described air bag connects the described pressure measuring tie-in and second hydraulic fluid port respectively by three-way union, described bypass valve is located on the described valve body and is communicated with two closed cavities of valve body, and described valve adpting flange is located on the described valve body by bolt and flange center hole and described rotating shaft position coupling.
Be to adjust the standard-sized sheet or the complete shut-down position of valve, i.e. this final controlling element middle rack position of moving, this final controlling element also comprises two adjusting screw, described two adjusting screw are twisted in the both sides of described valve body respectively and are butted on the two ends of described tooth bar.
For this final controlling element is adapted to and being connected of various valves, this final controlling element also comprises an ABAP Adapter, described ABAP Adapter lower end is positioned at the center hole of described valve adpting flange, the center of described ABAP Adapter has the through hole of band driving key, be used to connect valve, described rotating shaft bottom has a through hole, and described ABAP Adapter is located in the through hole of described rotating shaft bottom and by keyway and is connected, described rotating shaft drives described ABAP Adapter and rotates, and described ABAP Adapter drives the valve open and close.
Because the utility model is used to out, the single-acting hydraulic actuator of closing valve has adopted technique scheme, promptly in a valve body, be provided with two closed cavities and an installation cavity, install be equipped with in the cavity rotating shaft that is provided with gear and with the tooth bar of gear engagement, the tooth bar two ends extend in two closed cavities and two ends have piston, two closed cavities have the output terminal that hydraulic fluid port also is communicated with oil inlet pipe and capsule formula accumulator respectively, capsule formula accumulator is provided with gas charging valve and pressure measuring tie-in, also be provided with a bypass valve on the valve body, bypass valve is used to be communicated with two closed cavities of valve body, also is provided with the valve adpting flange on the valve body and is used to connect controlled valve; When this final controlling element breaks down in hydraulic system, when promptly not having pressure oil and entering into the single-acting hydraulic actuator by oil inlet pipe, this final controlling element can rely on the pressure oil that stores in the bladder type hydropneumatic accumulator with valve closing, thereby substitute traditional mechanical type spring with valve closing, be convenient to rigging up and debugging, improve the reliability of hydraulic system.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and embodiments:
Fig. 1 is the catenation principle figure of single-acting hydraulic actuator,
Fig. 2 is the front view that originally is used for the single-acting hydraulic actuator of open and close valve,
Fig. 3 is the plan view of Fig. 2,
Fig. 4 is that the A-A of Fig. 2 is to view.
Embodiment
As Fig. 2, Fig. 3 and shown in Figure 4, the utility model is used to out, the single-acting hydraulic actuator of closing valve comprises valve body 6, oil inlet pipe 65, driving mechanism, bypass valve 9, valve adpting flange 10 and capsule formula accumulator 8, described valve body 6 is provided with first hydraulic fluid port 63 and second hydraulic fluid port 64, described oil inlet pipe 65 connects described first hydraulic fluid port 63, have one in the described valve body 6 cavity 62 and two closed cavities 61 are installed, described two closed cavities 61 are communicated with first hydraulic fluid port 63 and second hydraulic fluid port 64 respectively, described driving mechanism is located in the installation cavity 62 and two closed cavities 61 of described valve body 6, described driving mechanism comprises gear 71, rotating shaft 72, tooth bar 73 and two pistons 74, described gear 71 is located in the rotating shaft 72, both are as a whole, described gear 71 and rotating shaft 72 are located in the installation cavity 62 of described valve body 6, described tooth bar 73 is positioned at the installation cavity 62 of described valve body 6 and meshes with described gear 71, described tooth bar 73 two ends lay respectively in two closed cavities 61 of described valve body 6, and described two pistons 74 lay respectively in two closed cavities 61 of described valve body 6 and are butted on described tooth bar 73 two ends; Described capsule formula accumulator 8 comprises air bag 83, pressure measuring tie-in 82 and gas charging valve 81, described gas charging valve 81 is located at described air bag 83 1 ends, the other end of described air bag 83 connects the described pressure measuring tie-in 82 and second hydraulic fluid port 64 respectively by three-way union 84, described bypass valve 9 is located on the described valve body 6 and is communicated with two closed cavities 61 of valve body 6, and described valve adpting flange 10 is located on the described valve body 6 and flange 10 center holes and described rotating shaft 72 location matches by bolt 12.
Be to adjust the standard-sized sheet or the complete shut-down position of valve 13, i.e. this final controlling element middle rack 73 position of moving, this final controlling element also comprises two adjusting screw 66, described two adjusting screw 66 are twisted in the both sides of described valve body 6 respectively and are butted on the two ends of described tooth bar 73.
For this final controlling element is adapted to and being connected of various valves 13, this final controlling element also comprises an ABAP Adapter 11, described ABAP Adapter 11 lower ends are positioned at the center hole of described valve adpting flange 10, the center of described ABAP Adapter 11 has the through hole 14 of band driving key, be used to connect valve 13, described rotating shaft 72 bottoms have a through hole, the interior keyway 15 that also passes through of through hole that described ABAP Adapter 11 is located at described rotating shaft 72 bottoms connects, described rotating shaft 72 drives described ABAP Adapter 11 and rotates, and described ABAP Adapter 11 drives the valve open and close.
Bladder type hydropneumatic accumulator is used to store inert gas in this final controlling element, opens gas charging valve, adds the inert gas of certain pressure in accumulator, as nitrogen etc., stops pressurization and get final product when the air pressure of nitrogen reaches authorized pressure.Bladder type hydropneumatic accumulator is equipped with a pressure measuring tie-in, adopt the interface of hand pump to be attached thereto and to bladder type hydropneumatic accumulator output terminal preliminary filling hydraulic oil, this hydraulic oil promotes rack shaft and moves right under the effect of accumulator internal air pressure, final driven gear and rotating shaft turn clockwise valve closing.And under normal circumstances, the pressure of filler opening is all the time greater than the oil pressure in the accumulator, and promptly tooth bar is positioned at the valve body left end all the time and makes valve open with driven gear.
This final controlling element when hydraulic oil when oil inlet pipe enters into the closed cavity on valve body the right, hydraulic oil promotes tooth bar and is moved to the left, thus driven gear and rotating shaft are rotated counterclockwise valve open.
Bypass valve is located on the valve body and is communicated with two closed cavities of valve body, bypass valve is used for the debug process of this final controlling element, open bypass valve during debugging, hydraulic oil can flow to second hydraulic fluid port or flow to first hydraulic fluid port from second hydraulic fluid port from first hydraulic fluid port of valve body, do not move and can not promote tooth bar, this bypass valve is mainly used in air and the impurity that drains in the hydraulic system pipeline.
Adjusting screw is installed on the both sides of valve body, when the position that tooth bar moves is bigger than normal or less than normal, the corner of gear and rotating shaft will be greater than 90 ° or less than 90 °, will cause valve closing like this or open incomplete, turn adjusting screw and be butted on the tooth bar two ends this moment, moving of tooth bar be can limit, thereby the standard-sized sheet or the complete shut-down position of valve adjusted.
After this final controlling element is connected in hydraulic system, when " A " of hydraulic oil slave controller mouth enters into first hydraulic fluid port of single-acting hydraulic actuator, promote tooth bar and be moved to the left, thereby driven gear and rotating shaft is rotated counterclockwise valve open.
And when first hydraulic fluid port of this final controlling element does not have pressure oil, i.e. the system failure, during " A " of controller mouthful of no hydraulic oil, the hydraulic oil in the accumulator is compressed gas and extrudes, and the promotion tooth bar moves right, and driven gear and rotating shaft turn clockwise valve closing.
This final controlling element can be selected the bladder type hydropneumatic accumulator and the hydraulic actuator of different model for use according to the valve of different sizes simultaneously.Its specification can adapt to the valve of latus rectum DN50-DN800
This single-acting hydraulic actuator can also be as required, output valve position " standard-sized sheet " and " complete shut-down " contact signal or 4-20mA valve seat opening signal, and its signal can be sent at a distance the place that the client needs, can be in the remote local virtual condition that shows hydraulic actuator.
Claims (3)
1. one kind is used to out, the single-acting hydraulic actuator of closing valve, it is characterized in that: this final controlling element comprises valve body, oil inlet pipe, driving mechanism, bypass valve, valve adpting flange and capsule formula accumulator, described valve body is provided with first hydraulic fluid port and second hydraulic fluid port, described oil inlet pipe connects described first hydraulic fluid port, be provided with one in the described valve body cavity and two closed cavities are installed, described two closed cavities are communicated with first hydraulic fluid port and second hydraulic fluid port respectively, described driving mechanism is located in the installation cavity and closed cavity of described valve body, described driving mechanism comprises gear, rotating shaft, tooth bar and two pistons, described gear is located in the rotating shaft, both are one, described gear and rotating shaft are located at described valve body and are installed in the cavity, described tooth bar be positioned at described valve body install cavity and with described gear engagement, described tooth bar two ends lay respectively in two closed cavities of described valve body, and described two pistons lay respectively in two closed cavities of described valve body and are butted on described tooth bar two ends; Described capsule formula accumulator comprises air bag, pressure measuring tie-in and gas charging valve, described gas charging valve is located at described air bag one end, the other end of described air bag connects the described pressure measuring tie-in and second hydraulic fluid port respectively by three-way union, described bypass valve is located on the described valve body and is communicated with two closed cavities of valve body, and described valve adpting flange is located on the described valve body by bolt and flange center hole and described rotating shaft position coupling.
2. the single-acting hydraulic actuator that is used for the open and close valve according to claim 1 is characterized in that: this final controlling element also comprises two adjusting screw, and described two adjusting screw lay respectively at the both sides of described valve body and are butted on the two ends of described tooth bar.
3. the single-acting hydraulic actuator that is used for the open and close valve according to claim 1, it is characterized in that: this final controlling element also comprises an ABAP Adapter, described ABAP Adapter lower end is positioned at the center hole of described valve adpting flange, the center of described ABAP Adapter has the through hole of band driving key, be used to connect valve, described rotating shaft bottom has a through hole, described ABAP Adapter is located in the through hole of described rotating shaft bottom and by keyway and is connected, described rotating shaft drives described ABAP Adapter and rotates, and described ABAP Adapter drives the valve open and close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920072598XU CN201436406U (en) | 2009-05-20 | 2009-05-20 | Single-acting hydraulic actuator for switching on or off the valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920072598XU CN201436406U (en) | 2009-05-20 | 2009-05-20 | Single-acting hydraulic actuator for switching on or off the valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201436406U true CN201436406U (en) | 2010-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920072598XU Expired - Fee Related CN201436406U (en) | 2009-05-20 | 2009-05-20 | Single-acting hydraulic actuator for switching on or off the valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201436406U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620040A (en) * | 2012-04-23 | 2012-08-01 | 沈阳东北电力调节技术有限公司 | Electrohydraulic system for driving large-size quarter-turn valve by using solar low-power power supply |
| CN105697851A (en) * | 2016-04-08 | 2016-06-22 | 洛阳雷斯达传动有限公司 | Screw drive hydraulic actuator for valve drive |
-
2009
- 2009-05-20 CN CN200920072598XU patent/CN201436406U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620040A (en) * | 2012-04-23 | 2012-08-01 | 沈阳东北电力调节技术有限公司 | Electrohydraulic system for driving large-size quarter-turn valve by using solar low-power power supply |
| CN102620040B (en) * | 2012-04-23 | 2013-09-04 | 沈阳东北电力调节技术有限公司 | Electrohydraulic system for driving large-size quarter-turn valve by using solar low-power supply |
| CN105697851A (en) * | 2016-04-08 | 2016-06-22 | 洛阳雷斯达传动有限公司 | Screw drive hydraulic actuator for valve drive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100407 Termination date: 20140520 |