CN104966641A - Hydraulic spring operating mechanism and high-voltage breaker - Google Patents
Hydraulic spring operating mechanism and high-voltage breaker Download PDFInfo
- Publication number
- CN104966641A CN104966641A CN201510325405.7A CN201510325405A CN104966641A CN 104966641 A CN104966641 A CN 104966641A CN 201510325405 A CN201510325405 A CN 201510325405A CN 104966641 A CN104966641 A CN 104966641A
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- Prior art keywords
- pressure
- operating mechanism
- spring operating
- pressure sensor
- hydraulic pressure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
- H01H33/34—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator hydraulic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
- H01H2033/306—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator monitoring the pressure of the working fluid, e.g. for protection measures
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention provides a hydraulic spring operating mechanism which cooperates with a pressure tester and comprises a working cylinder with oil and a piston rod, wherein the working cylinder is provided with an opening pressure test channel and a closing pressure test channel; a first pressure sensor used for acquiring dynamic oil pressure intensity in the working cylinder in real time during opening of the mechanism is embedded in the opening pressure test channel, one end of the first pressure sensor with a probe is arranged in the oil of the working cylinder, the other end of the first pressure sensor is connected with the pressure tester through a lead; a second pressure sensor used for acquiring dynamic oil pressure intensity in the working cylinder in real time during closing of the mechanism is embedded in the closing pressure test channel, one end of the second pressure sensor with a probe is arranged in the oil of the working cylinder, the other end of the second pressure sensor is connected with the pressure tester through a lead. Through adoption of the hydraulic spring operating mechanism of the present invention, dynamic oil pressure intensity in a working area during opening and closing processes can be actually measured, then optimization and improvement is further performed, thereby achieving the purpose of improving stability and service life of the hydraulic spring operating mechanism.
Description
Technical field
The present invention relates to hydraulic actuating mechanism technical field, particularly relate to a kind of hydraulic pressure spring operating mechanism and primary cut-out.
Background technology
Primary cut-out is the most important control element in high voltage power transmisson system, and operating mechanism is as the core component of primary cut-out, the divide-shut brake action that it is primary cut-out provides actuating force, and according to the electric pressure difference that primary cut-out works, provide the different operating works needed for driving primary cut-out.At present, in most of primary cut-out, operating mechanism adopts hydraulic pressure spring operating mechanism, this hydraulic pressure spring operating mechanism with spring or Compressed Gas for energy-storage units, hydraulic oil is energy transmission medium, driven plunger motion thus realize primary cut-out divide-shut brake motion.
Because hydraulic pressure spring operating mechanism is in divide-shut brake process, the movement velocity of working cylinder inner carrier is too high, strong impact, noise, even mechanical collision can be produced when divide-shut brake closes to an end, thus cause the damage of parts, badly influence the operating accuracy of this hydraulic pressure spring operating mechanism, therefore need to design suitable braking and buffering before divide-shut brake closes to an end, for reducing the damage of parts, improve the operating accuracy of this hydraulic pressure spring operating mechanism.And due to the design of above-mentioned braking and buffering all relevant by force with dynamic oil hydraulic pressure in divide-shut brake process, be therefore extremely necessary the situation of change testing out this hydraulic pressure spring operating mechanism working region internal dynamic fluid pressure in divide-shut brake process intuitively.
In prior art, hydraulic pressure spring operating mechanism extrapolates the pressure of static fluid in working chamber indirectly by means of only the change in location of disc spring decrement, but the pressure of dynamic fluid in working chamber in divide-shut brake process cannot be obtained, especially at the pressure of the divide-shut brake section of closing to an end, when main cause is that oil cylinder is in the divide-shut brake section of closing to an end, the change of its interior flow field is very complicated, makes the calculating of pressure very complicated and error is larger.
Therefore, need a kind of hydraulic pressure spring operating mechanism badly and in divide-shut brake process, actual measurement can be carried out to working region internal dynamic fluid pressure.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, a kind of hydraulic pressure spring operating mechanism and primary cut-out are provided, coordinate with pressure tester, actual measurement can be carried out to working region internal dynamic fluid pressure in divide-shut brake process, and then be optimized and improve, reach and improve hydraulic pressure spring operating mechanism stability and the object in useful life.
In order to solve the problems of the technologies described above, embodiments provide a kind of hydraulic pressure spring operating mechanism, it matches with pressure tester, comprise the working cylinder with fluid and the piston rod matched with described working cylinder, described working cylinder is respectively equipped with separating brake pressure test passage and closing pressure test channel; Wherein,
Described separating brake pressure test passage is embedded with for the first strong pressure sensor of the dynamic oil hydraulic pressure in working cylinder described in separating brake process of hydraulic pressure spring operating mechanism described in Real-time Collection, one end that described first pressure sensor has probe is positioned at described working cylinder fluid, and the other end is connected with described pressure tester by wire;
Described closing pressure test channel is embedded with for the second strong pressure sensor of the dynamic oil hydraulic pressure in working cylinder described in making process of hydraulic pressure spring operating mechanism described in Real-time Collection, one end that described second pressure sensor has probe is positioned at described working cylinder fluid, and the other end is connected with described pressure tester by wire.
Wherein, the first trip bolt is also comprised in described separating brake pressure test passage; Wherein,
Described first trip bolt is axially provided with the first central through hole;
When described first pressure sensor is fixed in described separating brake pressure test passage by described first trip bolt, outer surface and the described separating brake pressure test vias inner walls of described first trip bolt fit, and have the wire that two ends connect described pressure tester and described first pressure sensor respectively in its first central through hole.
Wherein, the first metal o-ring between described first pressure sensor and described first trip bolt is also comprised in described separating brake pressure test passage.
Wherein, described first pressure sensor is high-frequency pressure sensor.
Wherein, the second trip bolt is also comprised in described closing pressure test channel; Wherein,
Described second trip bolt is axially provided with the second central through hole;
When described second pressure sensor is fixed in described closing pressure test channel by the second trip bolt, outer surface and the described closing pressure test channel inwall of described second trip bolt fit, and have the wire that two ends connect described pressure tester and described second pressure sensor respectively in its second central through hole.
Wherein, the second metal o-ring between described second pressure sensor and described second trip bolt is also comprised in described closing pressure test channel.
Wherein, described second pressure sensor is high-frequency pressure sensor.
Wherein, described hydraulic pressure spring operating mechanism also comprises the displacement transducer be arranged on described piston rod, and institute's displacement sensors is connected with described pressure tester.
The embodiment of the present invention additionally provides a kind of primary cut-out, comprises aforesaid hydraulic pressure spring operating mechanism.
Wherein, described primary cut-out also comprises the pull pressure sensor between described hydraulic pressure spring operating mechanism and the insulated tension pole of described primary cut-out.
Implement the embodiment of the present invention, there is following beneficial effect:
1, in embodiments of the present invention, working cylinder due to hydraulic pressure spring operating mechanism is provided with the separating brake pressure test passage and closing pressure test channel that reflect mechanism pressure position in divide-shut brake process respectively, and it is strong to be provided with corresponding pressure sensor Real-time Collection dynamic oil hydraulic pressure at separating brake pressure test passage and closing pressure test channel respectively, and the dynamic oil hydraulic pressure collected is delivered to by force analyzing and processing in pressure tester, therefore, it is possible in divide-shut brake process, actual measurement is carried out to working region internal dynamic fluid pressure;
2, in embodiments of the present invention, because dynamic oil hydraulic pressure can contrast by force in pressure tester, and then the trend to performance impact to hydraulic pressure spring operating mechanism associated components and key structural parameters that realizes is analyzed, reach the object optimized and improve, further increase hydraulic pressure spring operating mechanism stability and useful life.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, the accompanying drawing obtaining other according to these accompanying drawings still belongs to category of the present invention.
The sectional perspective structural representation of the hydraulic pressure spring operating mechanism that Fig. 1 provides for the embodiment of the present invention one;
Fig. 2 is the part sectioned view of working cylinder in Fig. 1;
Fig. 3 is A point partial enlarged drawing in Fig. 2;
Fig. 4 is B point partial enlarged drawing in Fig. 3;
Separating brake stroke and pressue-graph in the hydraulic pressure spring operating mechanism application scenarios that Fig. 5 provides for the embodiment of the present invention one;
Close a floodgate in the hydraulic pressure spring operating mechanism application scenarios that Fig. 6 provides for the embodiment of the present invention one stroke and pressue-graph;
In figure: 1-working cylinder, 11-separating brake pressure test passage, 111-first pressure sensor, 112-first trip bolt, 1121-first central through hole, 113-first metal o-ring, 12-closing pressure test channel, 121-second pressure sensor, 122-second trip bolt, 1221-second central through hole, 123-second metal o-ring, 2-piston rod, 21-displacement transducer.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figures 1 to 4, for in the embodiment of the present invention one, a kind of hydraulic pressure spring operating mechanism proposed, it matches with pressure tester M, comprise the working cylinder 1 with fluid and the piston rod 2 matched with working cylinder 1, working cylinder 1 is respectively equipped with separating brake pressure test passage 11 and closing pressure test channel 12; Wherein,
Separating brake pressure test passage 11 is embedded with for Real-time Collection hydraulic pressure spring operating mechanism the first pressure sensor 111 that in working cylinder 1, dynamic oil hydraulic pressure is strong in separating brake process, one end that first pressure sensor 111 has probe is positioned at working cylinder 1 fluid, and the other end is connected with pressure tester M by wire;
Closing pressure test channel 12 is embedded with for Real-time Collection hydraulic pressure spring operating mechanism the second pressure sensor 121 that in working cylinder 1, dynamic oil hydraulic pressure is strong in making process, one end that second pressure sensor 121 has probe is positioned at working cylinder 1 fluid, and the other end is connected with pressure tester M by wire.
It should be noted that pressure tester realizes sending hydraulic pressure spring operating mechanism control command, and the reception of data, process, display and management.First pressure sensor 111 and the second pressure sensor 121 are high-frequency pressure sensor, the data of collection are delivered in pressure tester and convert corresponding pressure values to.Wherein, high-frequency pressure sensor model is MYD-8553B/C, and range is 200MPa, and the rise time is 2ms, and nonlinear velocity is 0.8%FS.
For the ease of the first pressure sensor 111 is fixed in separating brake pressure test passage 11, and realize being tightly connected, therefore also comprise the first trip bolt 112 in separating brake pressure test passage 11; Wherein, the first trip bolt 112 is axially provided with the first central through hole 1121; When the first pressure sensor 111 is fixed in separating brake pressure test passage 11 by the first trip bolt 112, outer surface and separating brake pressure test passage 11 inwall of the first trip bolt 112 fit, and there is in its first central through hole 1121 wire of two ends difference Bonding pressure tester M and the first pressure sensor 111, so just can guarantee that fluid is blocked in working cylinder 11 by the first trip bolt 112 sealed.
In order to realize the sealing of separating brake pressure test passage 11 further and reduce fluid to the impulse force of the first trip bolt 112, therefore in separating brake pressure test passage 11, also comprise the first metal o-ring 113 between the first pressure sensor 111 and the first trip bolt 112.
In like manner, for the ease of the second pressure sensor 121 is fixed in closing pressure test channel 12, and realize being tightly connected, therefore also comprise the second trip bolt 122 in closing pressure test channel 12; Wherein, the second trip bolt 122 is axially provided with the second central through hole 1221; When the second pressure sensor 121 is fixed in closing pressure test channel 12 by the second trip bolt 122, outer surface and closing pressure test channel 12 inwall of the second trip bolt 122 fit, and there is in its second central through hole 1221 wire of two ends difference Bonding pressure tester M and the second pressure sensor 121, so just can guarantee that fluid is blocked in working cylinder 11 by the second trip bolt 122 sealed.
In order to realize the sealing of closing pressure test channel 12 further and reduce fluid to the impulse force of the second trip bolt 122, therefore in closing pressure test channel 12, also comprise the second metal o-ring 123 between the second pressure sensor 121 and the second trip bolt 122.
In order to obtain hydraulic pressure spring operating mechanism upper contact head stroke curve, therefore hydraulic pressure spring operating mechanism also comprises the displacement transducer 21 be arranged on piston rod 2, and displacement transducer 21 is connected with pressure tester M.
The hydraulic pressure spring operating mechanism application scenarios provided in the embodiment of the present invention one is further illustrated:
Step one, at separating brake pressure test passage 11, first pressure sensor 111, first metal o-ring 113 and the first holding screw 112 is installed successively; In closing pressure test channel 12, second pressure sensor 121, second metal o-ring 123 and the second holding screw 122 is installed successively;
Step 2, conveniently primary cut-out dispatch from the factory characteristic test test, in order to obtain primary cut-out stroke curve, installation position displacement sensor 21;
Step 3, wiring.Connect primary cut-out fracture line and hydraulic pressure spring operating mechanism to be correlated with auxiliary connection, power supply, transducer are connected with pressure tester;
Step 4, optimum configurations pressure tester M relevant parameter according to primary cut-out, comprise stroke etc.;
Step 5, to provide point/switching signal from pressure tester M, make primary cut-out action;
Step 6, import the signal that the first pressure sensor 111, second pressure sensor 121 and contact displacement transducer 13 gather into pressure tester M, export corresponding curve from pressure tester M, as shown in Figure 5 and Figure 6.
Corresponding to the hydraulic pressure spring operating mechanism of the embodiment of the present invention one, the embodiment of the present invention two provides a kind of primary cut-out, have the hydraulic pressure spring operating mechanism described in the embodiment of the present invention one, the formation of this hydraulic pressure spring operating mechanism and annexation etc. repeat no more herein.
In order to obtain the mechanical load characteristic curve of primary cut-out inside, therefore primary cut-out also comprises the pull pressure sensor between hydraulic pressure spring operating mechanism and the insulated tension pole of primary cut-out.
Implement the embodiment of the present invention, there is following beneficial effect:
1, in embodiments of the present invention, working cylinder due to hydraulic pressure spring operating mechanism is provided with the separating brake pressure test passage and closing pressure test channel that reflect mechanism pressure position in divide-shut brake process respectively, and it is strong to be provided with corresponding pressure sensor Real-time Collection dynamic oil hydraulic pressure at separating brake pressure test passage and closing pressure test channel respectively, and the dynamic oil hydraulic pressure collected is delivered to by force analyzing and processing in pressure tester, therefore, it is possible in divide-shut brake process, actual measurement is carried out to working region internal dynamic fluid pressure;
2, in embodiments of the present invention, because dynamic oil hydraulic pressure can contrast by force in pressure tester, and then the trend to performance impact to hydraulic pressure spring operating mechanism associated components and key structural parameters that realizes is analyzed, reach the object optimized and improve, further increase hydraulic pressure spring operating mechanism stability and useful life.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (10)
1. a hydraulic pressure spring operating mechanism, it matches with pressure tester, comprise the working cylinder (1) with fluid and the piston rod (2) matched with described working cylinder (1), it is characterized in that, described working cylinder (1) is respectively equipped with separating brake pressure test passage (11) and closing pressure test channel (12); Wherein,
Described separating brake pressure test passage (11) is embedded with for strong the first pressure sensor (111) of the dynamic oil hydraulic pressure in working cylinder described in separating brake process (1) of hydraulic pressure spring operating mechanism described in Real-time Collection, one end that described first pressure sensor (111) has probe is positioned at described working cylinder (1) fluid, and the other end is connected with described pressure tester by wire;
Described closing pressure test channel (12) is embedded with for strong the second pressure sensor (121) of the dynamic oil hydraulic pressure in working cylinder described in making process (1) of hydraulic pressure spring operating mechanism described in Real-time Collection, one end that described second pressure sensor (121) has probe is positioned at described working cylinder (1) fluid, and the other end is connected with described pressure tester by wire.
2. hydraulic pressure spring operating mechanism as claimed in claim 1, is characterized in that, also comprise the first trip bolt (112) in described separating brake pressure test passage (11); Wherein,
Described first trip bolt (112) is axially provided with the first central through hole (1121);
When described first pressure sensor (111) is fixed in described separating brake pressure test passage (11) by described first trip bolt (112), outer surface and described separating brake pressure test passage (11) inwall of described first trip bolt (112) fit, and have the wire that two ends connect described pressure tester and described first pressure sensor (111) respectively in its first central through hole (1121).
3. hydraulic pressure spring operating mechanism as claimed in claim 2, it is characterized in that, in described separating brake pressure test passage (11), also comprise the first metal o-ring (113) be positioned between described first pressure sensor (111) and described first trip bolt (112).
4. hydraulic pressure spring operating mechanism as claimed in claim 3, it is characterized in that, described first pressure sensor (111) is high-frequency pressure sensor.
5. hydraulic pressure spring operating mechanism as claimed in claim 1, is characterized in that, also comprise the second trip bolt (122) in described closing pressure test channel (12); Wherein,
Described second trip bolt (122) is axially provided with the second central through hole (1221);
When described second pressure sensor (121) is fixed in described closing pressure test channel (12) by the second trip bolt (122), outer surface and described closing pressure test channel (12) inwall of described second trip bolt (122) fit, and have the wire that two ends connect described pressure tester and described second pressure sensor (121) respectively in its second central through hole (1221).
6. hydraulic pressure spring operating mechanism as claimed in claim 5, it is characterized in that, in described closing pressure test channel (12), also comprise the second metal o-ring (123) be positioned between described second pressure sensor (121) and described second trip bolt (122).
7. hydraulic pressure spring operating mechanism as claimed in claim 6, it is characterized in that, described second pressure sensor (121) is high-frequency pressure sensor.
8. the hydraulic pressure spring operating mechanism according to any one of claim 1 to 7, it is characterized in that, described hydraulic pressure spring operating mechanism also comprises the displacement transducer (21) be arranged on described piston rod (2), and institute's displacement sensors (21) is connected with described pressure tester.
9. a primary cut-out, is characterized in that, comprises the hydraulic pressure spring operating mechanism according to any one of claim 1 to 8.
10. primary cut-out as claimed in claim 9, it is characterized in that, described primary cut-out also comprises the pull pressure sensor between described hydraulic pressure spring operating mechanism and the insulated tension pole of described primary cut-out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510325405.7A CN104966641A (en) | 2015-06-15 | 2015-06-15 | Hydraulic spring operating mechanism and high-voltage breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510325405.7A CN104966641A (en) | 2015-06-15 | 2015-06-15 | Hydraulic spring operating mechanism and high-voltage breaker |
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| CN104966641A true CN104966641A (en) | 2015-10-07 |
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| CN201510325405.7A Pending CN104966641A (en) | 2015-06-15 | 2015-06-15 | Hydraulic spring operating mechanism and high-voltage breaker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612706A (en) * | 2018-12-25 | 2019-04-12 | 国网福建省电力有限公司检修分公司 | The detection of portable beaker spring fatigue and pressure regulation device and its working method |
| CN110567640A (en) * | 2019-10-10 | 2019-12-13 | 国网河南省电力公司电力科学研究院 | Online calibrating device and method for circuit breaker pressure sensor |
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| JPS5980507A (en) * | 1982-10-30 | 1984-05-10 | Sumitomo Precision Prod Co Ltd | Hydraulic operation circuit of breaker |
| CN2854793Y (en) * | 2005-11-25 | 2007-01-03 | 新东北电气(沈阳)高压开关有限公司 | Hydraulic operation mechanism for high tension circuit breaker |
| CN203643147U (en) * | 2013-12-13 | 2014-06-11 | 国家电网公司 | On-line monitoring device for hydraulic operation mechanism of breaker |
| CN204732338U (en) * | 2015-06-15 | 2015-10-28 | 深圳供电局有限公司 | A kind of hydraulic pressure spring operating mechanism and primary cut-out |
-
2015
- 2015-06-15 CN CN201510325405.7A patent/CN104966641A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5980507A (en) * | 1982-10-30 | 1984-05-10 | Sumitomo Precision Prod Co Ltd | Hydraulic operation circuit of breaker |
| CN2854793Y (en) * | 2005-11-25 | 2007-01-03 | 新东北电气(沈阳)高压开关有限公司 | Hydraulic operation mechanism for high tension circuit breaker |
| CN203643147U (en) * | 2013-12-13 | 2014-06-11 | 国家电网公司 | On-line monitoring device for hydraulic operation mechanism of breaker |
| CN204732338U (en) * | 2015-06-15 | 2015-10-28 | 深圳供电局有限公司 | A kind of hydraulic pressure spring operating mechanism and primary cut-out |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612706A (en) * | 2018-12-25 | 2019-04-12 | 国网福建省电力有限公司检修分公司 | The detection of portable beaker spring fatigue and pressure regulation device and its working method |
| CN110567640A (en) * | 2019-10-10 | 2019-12-13 | 国网河南省电力公司电力科学研究院 | Online calibrating device and method for circuit breaker pressure sensor |
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