CN1210741C - Hydraulic operation device - Google Patents
Hydraulic operation device Download PDFInfo
- Publication number
- CN1210741C CN1210741C CNB011236574A CN01123657A CN1210741C CN 1210741 C CN1210741 C CN 1210741C CN B011236574 A CNB011236574 A CN B011236574A CN 01123657 A CN01123657 A CN 01123657A CN 1210741 C CN1210741 C CN 1210741C
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- high pressure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/36—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by curled flexible tube, e.g. Bourdon tube
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- Fluid Mechanics (AREA)
- Measuring Fluid Pressure (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
An operating apparatus using liquid pressure a low cost which has a simple structure and high reliability, and is capable of stable operation is provided. A bypass flow path 63a is formed in a high-pressure flow path 63 of a liquid pressure monitor 60. The bypass flow path 63a provides a contracted part 73 and a check valve 74, in parallel in which liquid can only flow from an accumulator 400 to a piston 62a. The valve 74 is pushed to a sheet 74b by a spring 74a. A liquid pressure gauge 80 is mounted to a case 61 via a base 81. A scale plate 82, in which an indicating plate 84 mounted via a bearing 83 and capable of freely rotating, is mounted to the base 81. A plate 84a is mounted at one end of the indicating plate 84. A connecting part 84b provided on the plate 84a and a plate 65 mounted to a rod 62 of the monitor 60 are interconnected by a interconnecting bar 85. Furthermore, a testing port 75 is formed in the path 63 of the monitor 60, and a sealant 76 sealing an opening of the port 75 is provided.
Description
Technical field
The present invention relates to carry out the open circuit action of circuit breaker and the apply device of closed action.
Background technology
In recent years electricity needs has expansion trend, the high capacity of power transmission system, superhigh pressure work, is carrying out steadily and successfully, follows this work, and power transmission system adopts circuit breaker, utilizes gas SF
6The gas-break switch of insulation has accounted for main flow.In this, when circuit breaker carried out switch motion, the operating means that uses fluid to make drive source was promoted.Make the operating means of drive source among this of gas (compressed air), be accompanied by the high capacity and the superhigh pressureization of power transmission system, actuating force also obviously increases, and equipment such as cylinder and air reservoir also will be made maximization.And, because the gas exhaust noise of giving in when operation also becomes greatly, be necessary to install additional muffler, so equipment becomes easily complicatedly, also just produce many shortcomings.
With respect to this, drive source uses the operating means (so-called apply device) of liquid without gas, some following advantages are arranged.At first, because flowing fluid ratio gas pressure height, export high-powerly easily, device is miniaturization easily also.Also have, because air inlet during operation, the sound of giving vent to anger have not had, the noise during work can reduce significantly.And because the Incoercibility of liquid, its sensitive property is also more excellent.The hydraulic means of advantage to sum up, at the circuit breaker of big capacity, superhigh pressure and the drive source of doing be expected to work it out, other performance can also be further enhanced.
In this, with reference to the example of the apply device in Figure 12 to Figure 15 specific description past.Shown in Figure 12 is the configuration example of apply device in the past, and Figure 13 is the view of seeing from the arrow Y direction of Figure 12, and Figure 14 is the view of seeing from the arrow directions X of Figure 12.Figure 15 is the profile of hydraulic monitoring device.
As Figure 12 expressed, the opening and closing part of circuit breaker was made up of fixed electrode 2 and movable electrode 3, and movable electrode 3 is connected with the interior driver part 20 of apply device.The member of the drive division 20 of apply device 10 has: drive oil cylinder 21, insert oil cylinder inside slidably driven plunger 22, with driven plunger that the movable electrode 3 of circuit breaker one side is being connected on drive rod 23.And, in the space in this driving oil cylinder 21, piston is made partition wall, at drive rod 23 1 sides (side of movable electrode 3) and its opposite side, form two liquid chambers respectively: the 1st liquid chamber 24 and the 2nd liquid chamber 25.And second liquid chamber 25 couples together by cylinder cover 26 and control block hydraulic unit with 30.
Control block hydraulic unit with 30 is devices that the hydraulic pressure in the 2nd liquid chamber 25 is controlled in supply by selecting the 2nd hydraulic fluid (pressure fluid) in the liquid chamber 25 and discharging.As shown in Figure 13, be provided with the electromagnetically operated valve 301 of giving row of Control work liquid and drive the cylindrical shape solenoid of this electromagnetically operated valve 301.But, also use reversal valve and pressure charging valve sometimes.This control block hydraulic unit with 30 and the 2nd liquid chamber 25 usefulness streams 27 are communicated with to get up.
The 1st liquid chamber 24 is connected with hydraulic accumulator (accumulator) 400 by stream 401, and hydraulic accumulator 400 often provides highly pressurised liquid to the 1st liquid chamber 24, and this hydraulic accumulator 400 is installed on the end cap 26 of oil cylinder.Also have, as shown in Figure 14, pump assembly 500 has been installed on the cylinder cover, it is for supplying with highly pressurised liquid for hydraulic accumulator 400 that this pump assembly is set, promptly the liquid of discharging from above-mentioned control block hydraulic unit with is pressurizeed, itself and stream 401 are coupled together by stream 501.Also have, according to the instruction of control block hydraulic unit with 30, the liquid of the 2nd liquid chamber discharge flows into low pressure jars 502 by stream 503 and reclaims, and low pressure liquid is stored.
Above-mentioned bar 62 is pushed to the opposite direction of effect that is subjected to highly pressurised liquid with piston 62a by spring 64 effects, the hydraulic pressure that is subjected to according to piston 62a and the pressure effect of spring 64 and displacement.And, with the relative end 62b of piston 62a end, plate 65 has been installed on the above-mentioned bar 62, this piece plate 65 is provided with a plurality of adjustment bolts 66.Then, adjusting on the cylinder body 61 of screw 66, the displacement switch that is used for detecting the displacement of adjusting screw 66 is installed near these.
As shown in Figure 12, naked eyes can be seen the hydraulic pressure in the hydraulic accumulator 400, on cylinder cover 26, by stream 701 Pressure gauge 700 have been installed, and this manometric structure has adopted the Bourdon tube mode to make.
Like this, in apply device in the past, driver part 20, control block hydraulic unit with 30, hydraulic accumulator 400, pump parts 500, hydraulic control device 60, Pressure gauge 700 waits each structure member to be assembled in one by cylinder block 26, so need not use pipe arrangement to connect between each parts, further miniaturization.
But, the apply device in above-mentioned such past, some problems below existing, promptly, apply device 10, be parts such as driver part 20, hydraulic control device 30, hydraulic accumulator 400, pump assembly 500, hydraulic monitoring device 60, Pressure gauge 700 all to be dressed up by cylinder block 26 be one, this structure is formed without pipe arrangement.For this reason, can not absorb the rapid variation of hydraulic pressure, the influence that hydraulic monitoring device 60 is vulnerable to produce in circuit breaker folding work hydraulic pressure changes, promptly hydraulic pressure sharply reduces when open-circuit working, hydraulic pressure sharply increases during closed work, corresponding to this rapid hydraulic pressure change, displacement switch 67 just can move.
Watch the Pressure gauge 700 of hydraulic pressure in the apply device 10 as naked eyes, used the high Bourdon tube of valency, but under a variety of situations, in the common work of circuit breaker, the whether problem in normal range (NR) of hydraulic pressure can not occur, there is no need to note how many actual hydraulic pressure is.Because Pressure gauge also has been installed in this case, just the problem that cost increases has appearred.
Summary of the invention
To the objective of the invention is the problem mentioned above, exist in the technology in the past in order solving, a kind of simple in structure, stable working, reliability height, apply device that price is cheap again to be provided.
For achieving the above object, the invention provides a kind of apply device, carry out the opening and closing movement of the opening and closing part of circuit breaker, comprising: drive oil cylinder; Free sliding ground inserts the driven plunger that drives oil cylinder; The drive rod that the opening and closing part of this driven plunger and above-mentioned circuit breaker is linked up; With above-mentioned driven plunger is partition wall, at in-oil cylinder above-mentioned drive rod one side of above-mentioned driving and its opposition side, first liquid chamber of Xing Chenging and second liquid chamber respectively; Carry out the supply and the discharge of the pressure fluid of above-mentioned second liquid chamber selectively, the hydraulic control portion of the hydraulic pressure in the control liquid chamber; Highly pressurised liquid is acted on the hydraulic accumulator of first liquid chamber; And hydraulic monitoring device, wherein, hydraulic monitoring device is by the effect by the highly pressurised liquid obtained from above-mentioned hydraulic accumulator through the high pressure stream, and produces the movable part of displacement; Detect the displacement switch of above-mentioned movable part displacement; The low pressure stream that can be communicated with above-mentioned high pressure stream; When the hydraulic pressure of the highly pressurised liquid of crossing at high pressure stream upper reaches surpasses set point, be communicated with high pressure stream and low pressure stream, make highly pressurised liquid flow to the safety valve that the low pressure stream is discharged from the high pressure stream; High pressure stream and low pressure stream are communicated with, thereby make the cut-off valve that the hydraulic pressure of highly pressurised liquid reduces, it is characterized in that,
In the high pressure stream of above-mentioned hydraulic monitoring device, be provided with throttle pipe and can only flow to the unidirectional valve of hydraulic monitoring device from above-mentioned hydraulic accumulator with this throttle pipe liquid that makes arranged side by side.
According to the present invention, owing to be provided with throttle pipe on the high pressure stream, pressure flows into hydraulic monitoring device with highly pressurised liquid from hydraulic accumulator, thus can absorb the change of anxious strong hydraulic pressure, so can monitor stable hydraulic pressure.Moreover when the hydraulic pressure of hydraulic accumulator becomes unusual when high, one-way valve opens is because the highly pressurised liquid that comes from hydraulic accumulator can flow to safety valve apace, so can guarantee the fail safe of apply device.Also have, cut-off valve is being opened, when the pressure of highly pressurised liquid is reduced, because cut-off valve opens, so can be promptly the pressure of highly pressurised liquid be reduced.
Above-mentioned throttle pipe is a flow variable restrictor pipe.
If have structure as described above, change for the various hydraulic pressure in the various machines of same structure, all can provide the hydraulic detection device that can absorb rapid fluctuation.Can seek the generalization of parts thus, so also just can reduce cost.
The throttle pipe and the unidirectional valve that are located at above-mentioned high pressure stream form one.
If structure as described above arranged because unidirectional valve and throttle pipe be made of one, then machine can be done miniaturization.Also have, reduce to minimum, then help cutting down cost by the processing that makes complicated stream.
The present invention also provides a kind of apply device, carries out the opening and closing movement of the opening and closing part of circuit breaker, is provided with: drive oil cylinder; Free sliding ground inserts the driven plunger that drives oil cylinder; The drive rod that the opening and closing part of this driven plunger and above-mentioned circuit breaker is linked up; With above-mentioned driven plunger is partition wall, at in-oil cylinder above-mentioned drive rod one side of above-mentioned driving and its opposition side, first liquid chamber of Xing Chenging and second liquid chamber respectively; Carry out the supply and the discharge of the pressure fluid of above-mentioned second liquid chamber selectively, the hydraulic control portion of the hydraulic pressure in the control liquid chamber; Highly pressurised liquid is acted on the hydraulic accumulator of first liquid chamber; And hydraulic monitoring device, wherein, hydraulic monitoring device has the cylinder body that has oil cylinder; The highly pressurised liquid of above-mentioned hydraulic accumulator is taken into high pressure stream in the above-mentioned cylinder body; The bar that has piston, free sliding ground inserts the oil cylinder of above-mentioned cylinder body, accepts the effect from the highly pressurised liquid of above-mentioned hydraulic accumulator; Above-mentioned bar pushed to the rightabout spring of the effect of the highly pressurised liquid that is subjected to above-mentioned piston; Detect the displacement switch of the displacement of above-mentioned bar, it is characterized in that, also dispose the hydraulic pressure detecting instrument, this hydraulic pressure detecting instrument comprises:
The scale plate that contains scale of representing normal hydraulic pressure scope; Be installed in the indicator board of this scale plate by bearing free to rotately; Be installed in the plate of an end of this indicator board; Be arranged on the joint portion on this plate; The link that the bar of this joint portion and above-mentioned hydraulic monitoring device is linked up.
Supposing has structure as described above, and the displacement of the bar by utilizing hydraulic monitoring device only utilizes few parts to make the state that simple structure just can be confirmed hydraulic pressure, just need not be with the high price pressure gauge, so just can reduce cost.
On the plate of being installed on the indicator board of above-mentioned hydraulic pressure detecting instrument, be provided with the joint portion in two above positions at interval of the regulation of being separated by.
If structure as described above is arranged, even then apply device being placed in length and breadth, any state uses, also can not change structure, make the sensing of hydraulic measurement instrument can point to any direction, the visibility of hydraulic measurement instrument also all is improved thus, the installation site need not be selected, the hydraulic measurement instrument of universal performance can be made.
The indicating device that is provided with on the scale plate of above-mentioned hydraulic pressure detecting instrument and indicator board is located at 2 respectively more than the position at least.
If structure as described above is arranged, then can watch the hydraulic measurement instrument from all angles, the visuality of hydraulic measurement instrument is improved, and becomes the hydraulic measurement instrument that universal performance is arranged that need not select the installation site.
In above-mentioned hydraulic pressure detecting instrument, above-mentioned link constitutes with metal wire, and be provided with above-mentioned indicator board to the rightabout traction of the direction of draw of above-mentioned metal wire or the spring of pushing.
If above-mentioned structure is arranged, the indicator board of hydraulic measurement instrument is with respect to the position of scale plate, owing to accomplishing fine setting easily by the length of adjusting metal wire, so improved its operation convenience widely.
In above-mentioned hydraulic pressure detecting instrument, above-mentioned link is made of the 1st spring, and be provided with above-mentioned indicator board to the rightabout traction of the direction of draw of above-mentioned the 1st spring or the 2nd spring of pushing; Also be provided with block, above-mentioned indicator board can not be rotated to below the initial point that is located at the scale on the above-mentioned scale plate.
If structure as described above is arranged, even then the bar of hydraulic monitoring device produces microvibration by hydraulic pulsation, by the cushioning effect of first spring, vibration of bar can not conduct the indicator board to the hydraulic pressure measuring instrument, so the visual performance of indicator board is largely increased.
In above-mentioned hydraulic pressure detecting instrument, above-mentioned link constitutes with connecting rod, forms tooth bar in the end of the indicator board side of this connecting rod, and the plate of end that is located at aforementioned indicator board is as pinion, with above-mentioned tooth bar engagement; On above-mentioned connecting rod, be provided with sliding part; On above-mentioned scale plate, be provided with can with the guidance part of the sliding part slip joint of above-mentioned connecting rod.
According to the present invention, owing to the straight line displacement of the bar of the change general knowledge of the hydraulic pressure of apply device correctly can be transformed to the circular motion of indicator board, so high-precision hydraulic pressure detecting instrument can be provided.
Also have test port that on the high pressure stream of above-mentioned hydraulic monitoring device, is connected to form and the seal member that this test port is sealed.
If according to above-mentioned structure, when the hydraulic pressure variation of apply device is necessary to measure, Pressure gauge to be received on the above-mentioned test port, it is possible and easy that the mensuration of hydraulic pressure becomes.
Be provided with this test port at above-mentioned test port place and above-mentioned high pressure stream is communicated with or sealing, select whether to supply with the cut-off valve of highly pressurised liquid to test port.
If structure as described above is arranged, when for the pressure of the highly pressurised liquid of measuring apply device Pressure gauge being connected, provide operation above-mentioned cut-off valve, hydraulic pressure can keep high pressure, because Pressure gauge is loaded onto to unload and is become possibility, so increased substantially the convenience of operation.
Be provided with throttle pipe with regulation flow in above-mentioned test port.
If adopt structure as described above, if hydraulic pressure is reduced, even then the seal member of test port is taken off, owing to be provided with throttle pipe at the test port place, and because this throttle pipe only keeps small flow, so have only a spot of liquid to ooze out.Thereby, when survey hydraulic pressure will connect Pressure gauge, the working solution of low pressure jar there is no need to extract out, as long as making high tension loop and low tension loop connects, hydraulic pressure is reduced, the seal member of sealing test port is taken off, and manometric loading and unloading just become possibility, with this inexpensive structure operation are improved.
Description of drawings
Fig. 1 represents the fragmentary cross-sectional view of structure of the 1st example of the relevant apply device of the present invention.
Fig. 2 is the Y direction view of Fig. 1.
Fig. 3 represents the section of structure of the 2nd example of the apply device that the present invention is relevant.
Fig. 4 represents the section of structure of the 3rd example of the apply device that the present invention is relevant.
Fig. 5 represents the section of structure of the 4th example of the apply device that the present invention is relevant.
Fig. 6 represents the section of structure of the 5th example of the apply device that the present invention is relevant.
Fig. 7 represents the section of structure of the 6th example of the apply device that the present invention is relevant.
Fig. 8 represents the section of structure of the 7th example of the apply device that the present invention is relevant.
Fig. 9 represents the section of structure of the 8th example of the apply device that the present invention is relevant.
Figure 10 represents the section of structure of the 9th example of the apply device that the present invention is relevant.
Figure 11 represents the section of structure of the 10th example of the apply device that the present invention is relevant.
Figure 12 represents the profile of a kind of example of apply device in the past.
Figure 13 is the Y direction view of Figure 12.
Figure 14 is the directions X view of Figure 12.
Figure 15 is the profile of the hydraulic monitoring device of apply device in the past.
Embodiment
Below, be the example (to call example in the following text) of the relevant apply device of the present invention, referring to figs. 1 through concrete the making an explanation of Figure 11.Figure 12 to Figure 15 represents pattern in the past.Use with a kind of symbol with a kind of parts, omitted explanation.Also have, the structure of the folding parts of circuit breaker is for an example, and electrode of opposite can be made relative folding, and two relative electrodes move together.And the overall structure of apply device is lifted an example, does not limit this structure special case.
The 1st kind of example
(structure)
Fig. 1 and Fig. 2 are the views of structure of first example of apply device of the present invention, and Fig. 1 partly is a profile, Fig. 2 be Fig. 1 from the Y direction see to view.
In this example, the structure of expressing in Fig. 1 is as follows, forms bypass stream 63a on the high pressure stream 63 of hydraulic monitoring device 60, and this bypass stream 63a is provided with throttle pipe 73.Also have, on high pressure stream 63, in parallel with aforementioned throttle pipe 73, be provided with unidirectional valve 74, the power that produces by spring 74a is pressed towards board 74b place, and this unidirectional valve 74 can only lead to liquid from hydraulic accumulator 400 1 side direction piston 62a one effluent, above-mentioned is this routine structure, other structure of hydraulic monitoring device 60, the existing pattern of expressing with Figure 15 is identical, in this description will be omitted.
In this example, as Fig. 1 and Fig. 2 express,, hydraulic pressure detecting instrument 80 is installed by base 81 at cylinder body shell 61 places.Also have, on this base 81 scale plate 82 has been installed, on this scale plate 82, the indicator board 84a that can freely rotate is installed by bearing 83.And on this indicator board 84, the one end has been installed plate 84a, has designed connecting portion 84b again on this plate 84a, and plate 65 has been installed at bar 62 places of above-mentioned hydraulic monitoring device 60, and this plate 65 links with connecting portion 84b by connecting rod 85.Also have, transparent lid 86 has been installed on the scale plate 82, cover on indicator board 84.
The high pressure stream 63 of hydraulic monitoring device 60 is connected with test port 75, and this test port 75 is directed to the outside of cylinder shell.Also have,, be provided with seal member 76, seal this opening at these test port 75 places.
The apply device of this example of above-mentioned formation, its effect is as follows: that is to say, in hydraulic monitoring device, according to the displacement of piston 62a and the load character of spring 64, can often monitor the hydraulic pressure of the fluid reservoir of hydraulic accumulator 400.More specifically,, make 67 work of displacement switch, send signal by this displacement switch 67 to control block hydraulic unit with 30, the running of control pump assembly 500 or shutdown when the hydraulic pressure of hydraulic accumulator drops to when being lower than setting.
Promptly, after the hydraulic pressure of the fluid reservoir of hydraulic accumulator 400 descends, because the unidirectional valve 74 on the high pressure stream 63 is sealed high pressure stream 63 by the compression stress that hydraulic pressure difference and spring 74a produce, so act on the pressure fluid on the piston 62a, the throttle pipe 73 by bypass stream 63a descends rapidly.Even its result is by the circuit breaker opening and closing movement.Hydraulic pressure reduces rapidly, and by the effect of throttle pipe 73, the hydraulic pressure of piston element 62a becomes stable, can prevent from like this to cause the 67 generation misoperations of displacement switch owing to this descends rapidly.
Otherwise when making hydraulic pressure produce unusual the rising for a certain reason, unidirectional valve 74 is in connected state, because highly pressurised liquid can promptly flow into safety valve 69, rises so can suppress hydraulic pressure.Also have,, make high pressure stream 63 and low pressure stream 68 be communicated with, the hydraulic pressure of highly pressurised liquid is reduced, owing to unidirectional valve 74 is being opened, so can promptly reduce the hydraulic pressure of highly pressurised liquid even cut-off valve 70 is opened.
In hydraulic measurement instrument 80, as Fig. 2 represents, because the hydraulic pressure change, the bar 62 of hydraulic monitoring device 60 is subjected to displacement thereupon, and by connecting rod 85, indicator board 84 rotates, by being arranged on the pointer 84c in the indicator board 84, can on scale plate 82, point out the state of hydraulic pressure.Have again, designed the scale 82a that the hydraulic pressure normal range (NR) is showed on the scale plate 82.Thereby in this example, hydraulic pressure whether just find out by normal a glance easily.
When being necessary correctly to determine the pressure of highly pressurised liquid, take off the seal member of test port 75, connect the pressure selected table again at this opening part, can easily determine the pressure of highly pressurised liquid.And, by these parts are combined, can provide the hydraulic monitoring device and the hydraulic measurement instrument of steady operation, make the miniaturization intensification of machine become possibility.
Second example
This example is changed on above-mentioned example basis.Just, this example as Fig. 3 represents, in the high pressure stream 63 of hydraulic monitoring device 60, has designed throttle pipe 77, the flow of the highly pressurised liquid of its scalable hydraulic accumulator 400 and piston 62a side.
The apply device of this example of said structure can be used in the different plurality of devices of hydraulic pressure change conditions, and different equipment adopts the device of same structure, so can seek the generalization of parts.
The 3rd example
This example, it is change on above-mentioned the 1st example basis, just Fig. 4 represent like that, in the high pressure stream 63 of hydraulic monitoring device 60, designed unidirectional valve 78, it only allow liquid from hydraulic accumulator 400 while flowing to piston 62a's, designed throttle pipe stream 78a in this unidirectional valve 78, be pressed towards board 74b by spring 74a.
In the apply device of this example of above-mentioned structure, can make the miniaturization of machine.Can the processing of complicated stream is minimum, thus can the cutting down cost expense.
The 4th example
This example is in above-mentioned first example, to the change of hydraulic pressure detecting instrument.That is to say, in this example, as shown in Figure 5, on the plate 84a on the indicator board 84 that is installed in hydraulic pressure detecting instrument 80, be provided with connector 84b 2 positions with about 90 ° of intervals.
In the apply device of this example of said structure, apply device 10 does not change structure no matter using under which kind of state in length and breadth yet, and direction can be freely changed in the sensing of hydraulic pressure detecting instrument.Thus, the visual performance of hydraulic pressure detecting instrument is improved, and need not select the installation site, and the hydraulic pressure detecting instrument just can be general.
The 5th kind of example
This example is hydraulic measurement instrument change shown in the general in above-mentioned the 1st example.Just, this example not only on the scale plate 82 of hydraulic pressure detecting instrument 80, and has also designed scale 82c at side 82b place as Fig. 6 expresses, corresponding with the scale 82c of side 82b, has designed pointer 84d on indicator board 84.
In the apply device of this example of above-mentioned structure, can multiple angles see the hydraulic pressure detecting instrument, thereby the visibility of hydraulic pressure detecting instrument is improved, owing to need not select the installation site, hydraulic detection device has versatility simultaneously.
The 6th example
This example is hydraulic measurement instrument change shown in the general in above-mentioned the 1st example.Just, this example as Fig. 7 is represented go out, with the indicator board 84 and the bar 62 of hydraulic pressure detecting instrument 80, they are linked together with metal wire (wire) 87, and be provided with spring 88, often indicator board 84 drawn to the direction opposite with the lead of steel wire rope 87.One end of spring 88 is fixed on the plate 84a, and the other end is fixed on the scale plate 82.
In the apply device of this example of said structure, by regulating the length of steel wire 87, position can be easily finely tuned,, lightweight can be accomplished simultaneously so the operation convenience of device is improved with respect to the scale 82a of the indicator board 84 of hydraulic pressure detecting instrument 80.
The 7th example
This example, the hydraulic pressure detecting instrument that above-mentioned the 1st example is expressed is transformed, just, in this example, as shown in Figure 8, the indicator board 84 of hydraulic pressure detecting instrument 80 and bar 62 connect with the 1st spring 89, and, be provided with the 2nd spring 90, indicator board 84 is often drawn to the direction opposite with the direction of pull of first spring 89, and an end of the 2nd spring 90 is fixed on the plate 84a, and the other end is fixed on the scale plate 82.Also designed and stopped link stopper 91, below the initial point of the scale 82a that makes indicator board 84 not rotate to be located on the scale plate 82.
In the apply device of this example of said structure, even the bar of hydraulic measurement instrument 80 62 is because the pulsation of hydraulic pressure produces small vibration, cushioning effect through first spring 89, the vibration of bar 62 also can not be passed to the indicator board 84 of hydraulic measurement instrument 80, has improved the visibility of indicator board.
The 8th example
This example is transformed the hydraulic measurement instrument of expressing in aforementioned the 1st example.Just, this example, as Fig. 9 represents, end at the indicator board 84 of the connecting rod 85 of indicator board 84 that connects hydraulic measurement instrument 80 and bar 62, tooth bar 85a is made in formation, and on the plate 84a of indicator board 84, form pinion 84e, be made into engagement with the tooth bar 85a of connecting rod 85.And, on connecting rod 85, be provided with slide unit 85b, on scale plate 82, be provided with guide portion 82d, with the chimeric slip of this slide unit 85b.
In the apply device of this enforcement state of above-mentioned structure,, therefore can provide high-precision hydraulic measurement instrument because the displacement of bar 62 straight lines that the change of hydraulic pressure can be caused correctly is transformed into the circus movement of indicator board 48.
The 9th example
This example is transformed in the test port portion that above-mentioned the 3rd example is expressed.That is to say, this example Figure 10 represent like that, with test port 75 that the high pressure stream 63 of hydraulic monitoring device 60 is connected on, be provided with cut-off valve 92, it can or be sealed test port 75 and 63 connections of high pressure stream, selects whether to supply with highly pressurised liquids to test port 75.
In the apply device of this example of above-mentioned structure, Pressure gauge is connected, when the hydraulic pressure that carries out the highly pressurised liquid of apply device is measured,, tightening above-mentioned cut-off valve 90 even hydraulic pressure is kept high pressure conditions, after making test port 75 sides not have hydraulic pressure, can take off seal member 76, the cut-in pressure table, after this, open cut-off valve 92, just can carry out the mensuration of hydraulic pressure.Opposite with installation procedure when taking off Pressure gauge, can keep carrying out under the high pressure conditions operation at hydraulic pressure.Like this, in this example, keep under the constant situation of high pressure at hydraulic pressure, Pressure gauge just can be installed, take off, and has therefore improved the operation convenience greatly.
The 10th example
This example is transformed test port on shown above-mentioned the 1st example.Just in this example, as Figure 11 represents,, keep flowing through small flow owing to being provided with throttle pipe 75a at test port 75 places that are connected with the high pressure stream 63 of hydraulic monitoring device 60.
In the apply device of this example of said structure, 75 places are provided with throttle pipe 75a in test port, and this throttle pipe 75a only keeps small flow, so if hydraulic pressure is reduced, even take off the seal member 76 of sealing test port 75, also have only minute quantity liquid to ooze out.Thereby, when mensuration hydraulic pressure is gone up in the Pressure gauge connection, hydraulic fluid in the low pressure jar 502 also there is no need to emit, only need high pressure stream 63 and low pressure stream 68 are communicated with, hydraulic pressure is lowered, the seal member 76 of sealing test port 75 is taken off, just can carry out manometric installing or removing, so significantly improved the convenience of operation.
The effect of invention
The present invention with simply constructing, can provide reliability height, low price as mentioned above The apply device of energy steady operation.
That is to say, in the present invention, can provide a kind of liquid with hydraulic monitoring device The press operation device on the high pressure stream that is taken into highly pressurised liquid in hydraulic monitoring device, is established Put throttle pipe and check valve, thereby work can mistake yet when hydraulic pressure sharply changed, stable can Lean on.
In the present invention, because the hydraulic measurement instrument has been utilized the change of the bar of hydraulic monitoring device The simple structure of position, installation direction need not be selected, so order can be provided with cheap Apply device depending on the good hydraulic measurement instrument of performance.
Have again, in the present invention, be provided with the test end that is connected with the high pressure of hydraulic monitoring device Mouthful, setting pressure table etc. easily, and and the hydraulic measurement table fit together, get final product Again good hydraulic operating mechanism of cheap operation is provided.
Claims (6)
1, a kind of apply device carries out the opening and closing movement of the opening and closing part of circuit breaker, comprising: drive oil cylinder; Free sliding ground inserts the driven plunger that drives oil cylinder; The drive rod that the opening and closing part of this driven plunger and above-mentioned circuit breaker is linked up; With above-mentioned driven plunger is partition wall, at in-oil cylinder above-mentioned drive rod one side of above-mentioned driving and its opposition side, first liquid chamber of Xing Chenging and second liquid chamber respectively; Carry out the supply and the discharge of the pressure fluid of above-mentioned second liquid chamber selectively, the hydraulic control portion of the hydraulic pressure in the control liquid chamber; Highly pressurised liquid is acted on the hydraulic accumulator of first liquid chamber; And hydraulic monitoring device, wherein, hydraulic monitoring device is by constituting with lower member: the effect by the highly pressurised liquid obtained from above-mentioned hydraulic accumulator through the high pressure stream produces the movable part of displacement; Detect the displacement switch of above-mentioned movable part displacement; The low pressure stream that can be communicated with above-mentioned high pressure stream; When the hydraulic pressure of the highly pressurised liquid of crossing at high pressure stream upper reaches surpasses set point, be communicated with high pressure stream and low pressure stream, make highly pressurised liquid flow to the safety valve that the low pressure stream is discharged from the high pressure stream; High pressure stream and low pressure stream are communicated with, thereby make the cut-off valve that the hydraulic pressure of highly pressurised liquid reduces, it is characterized in that,
In the high pressure stream of above-mentioned hydraulic monitoring device, be provided with throttle pipe and can only flow to the unidirectional valve of hydraulic monitoring device from above-mentioned hydraulic accumulator with this throttle pipe liquid that makes arranged side by side.
2, according to the apply device of claim 1 record, it is characterized in that above-mentioned throttle pipe is a flow variable restrictor pipe.
According to the apply device of claim 1 or 2 records, it is characterized in that 3, the throttle pipe and the unidirectional valve that are located at above-mentioned high pressure stream form one.
4, according to the apply device of claim 1 or 2 records, it is characterized in that also having test port that on the high pressure stream of above-mentioned hydraulic monitoring device, is connected to form and the seal member that this test port is sealed.
5, according to the apply device of claim 4 record, it is characterized in that, be provided with this test port at above-mentioned test port place and above-mentioned high pressure stream is communicated with or sealing, select whether to supply with the cut-off valve of highly pressurised liquid to test port.
6, according to the apply device of claim 4 record, it is characterized in that, be provided with throttle pipe in above-mentioned test port with regulation flow.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP262397/2000 | 2000-08-31 | ||
| JP2000262397A JP4373593B2 (en) | 2000-08-31 | 2000-08-31 | Hydraulic operation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1340836A CN1340836A (en) | 2002-03-20 |
| CN1210741C true CN1210741C (en) | 2005-07-13 |
Family
ID=18750086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011236574A Expired - Lifetime CN1210741C (en) | 2000-08-31 | 2001-08-30 | Hydraulic operation device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4373593B2 (en) |
| KR (1) | KR100411975B1 (en) |
| CN (1) | CN1210741C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100856859B1 (en) | 2007-02-16 | 2008-09-05 | 주식회사 한솔테크 | Fault Pressure Relay for power transformer |
| KR100856858B1 (en) | 2007-02-16 | 2008-09-05 | 주식회사 한솔테크 | Sudden Pressure Relay for power transformer |
| JP6358748B2 (en) * | 2014-10-16 | 2018-07-18 | 興国インテック株式会社 | Fluid detector |
| CN104766755B (en) * | 2014-11-17 | 2017-09-26 | 平高集团有限公司 | Operating mechanism energy storage device and the hydraulic actuating mechanism using the device |
| CN108461348A (en) * | 2018-03-23 | 2018-08-28 | 广东电网有限责任公司汕头供电局 | A kind of multipurpose sulfur hexafluoride gas density relay device |
| CN109838380A (en) * | 2019-03-27 | 2019-06-04 | 银川市长城液压有限责任公司 | A kind of variable vane pump impact-proof structure |
-
2000
- 2000-08-31 JP JP2000262397A patent/JP4373593B2/en not_active Expired - Lifetime
-
2001
- 2001-08-29 KR KR10-2001-0052468A patent/KR100411975B1/en not_active IP Right Cessation
- 2001-08-30 CN CNB011236574A patent/CN1210741C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1340836A (en) | 2002-03-20 |
| KR100411975B1 (en) | 2003-12-24 |
| JP2002075139A (en) | 2002-03-15 |
| KR20020018110A (en) | 2002-03-07 |
| JP4373593B2 (en) | 2009-11-25 |
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20050713 |
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| CX01 | Expiry of patent term |