CN219350074U - Integrated piece for operating cylinder of breaker operating mechanism and breaker operating mechanism - Google Patents
Integrated piece for operating cylinder of breaker operating mechanism and breaker operating mechanism Download PDFInfo
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- CN219350074U CN219350074U CN202320117639.2U CN202320117639U CN219350074U CN 219350074 U CN219350074 U CN 219350074U CN 202320117639 U CN202320117639 U CN 202320117639U CN 219350074 U CN219350074 U CN 219350074U
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- operating mechanism
- cylinder
- circuit breaker
- energy storage
- pressure oil
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- 238000004146 energy storage Methods 0.000 claims abstract description 47
- 239000012530 fluid Substances 0.000 claims abstract description 26
- 238000004891 communication Methods 0.000 claims abstract description 25
- 239000003921 oil Substances 0.000 claims description 54
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 230000014509 gene expression Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The utility model relates to an integral part for a working cylinder of a circuit breaker operating mechanism and the circuit breaker operating mechanism. The integrated piece includes: -a body (100) defining a high pressure working chamber (101), a first channel (301) and a second channel (302), said high pressure working chamber being adapted to allow a piston rod of said operating mechanism to move axially therein and to be in fluid communication with a booster pump of said operating mechanism through said first channel; and at least one energy storage module (200) projecting radially outwardly from the body and defining a high pressure oil chamber (201) in fluid communication with the high pressure working chamber through the second passage and adapted to store high pressure oil for driving an energy storage piston of the operating mechanism to move therein. The integrated part reduces the number of parts by integrating the energy storage module, and effectively eliminates the risk of oil leakage between the working cylinder and the energy storage module.
Description
Technical Field
The utility model relates to the technical field of high-voltage circuit breakers. More particularly, the present utility model relates to an integral piece for a circuit breaker operating mechanism cylinder, and to a circuit breaker operating mechanism comprising such an integral piece.
Background
The operating mechanism of the high-voltage circuit breaker can be a hydraulic spring mechanism, namely, the energy storage piston is driven to move in the energy storage module by hydraulic oil to store and release energy of the spring, and the spring after energy storage can drive the piston rod to move in the working cylinder for a power source, so that the circuit breaker contact body is driven to realize opening and closing operation.
Such an energy storage module of the hydraulic spring mechanism is formed with a high-pressure oil chamber for storing high-pressure oil to drive the energy storage piston to move therein. The conventional energy storage module is a cylinder independent part of the hydraulic spring mechanism that is assembled to the cylinder by means of fasteners (e.g. bolts) and appropriate seals. However, this design causes problems. For example, oil leakage may occur at the seal between the working cylinder and the energy storage module. Furthermore, when more than one energy storage module is used, the position of the energy storage piston may be greatly affected by the assembly accuracy of these energy storage modules.
Disclosure of Invention
The utility model aims to provide an integral part for a working cylinder of a circuit breaker operating mechanism and the circuit breaker operating mechanism comprising the integral part, wherein the integral part reduces the number of parts by integrating an energy storage module, and effectively eliminates the risk of oil leakage between the working cylinder and the energy storage module.
To this end, a first aspect of the utility model provides a single piece for a working cylinder of a circuit breaker operating mechanism, said piece comprising: a body defining a high pressure working chamber, a first passage and a second passage, the high pressure working chamber adapted to permit axial movement of a piston rod of the operating mechanism therein and adapted to be in fluid communication with a booster pump of the operating mechanism through the first passage; and at least one energy storage module protruding radially outward from the body and defining a high pressure oil chamber in fluid communication with the high pressure working chamber through the second passage and adapted to store high pressure oil to drive an energy storage piston of the operating mechanism for movement therein.
According to an alternative embodiment of the utility model, the unitary piece comprises three of the energy storage modules evenly distributed around the body.
According to an alternative embodiment of the utility model, the body further defines a third passage and a fourth passage, the third passage being adapted to place the high pressure oil chamber in fluid communication with a control valve of the operating mechanism, and the fourth passage being adapted to place the control valve in fluid communication with a piston rod drive oil chamber of the working cylinder.
According to an alternative embodiment of the utility model, the body further delimits a low-pressure oil chamber and a fifth passage, the low-pressure oil chamber being isolated from the high-pressure working chamber and being adapted to be in fluid communication with the booster pump through the fifth passage.
According to an alternative embodiment of the utility model, the body further defines a sixth passage in fluid communication with the low pressure oil chamber and adapted to recover hydraulic oil leaking from the high pressure oil chamber.
According to an alternative embodiment of the utility model, the body further defines a seventh passage adapted to place the low pressure oil chamber in fluid communication with the piston rod drive oil chamber of the working cylinder.
A second aspect of the utility model provides a circuit breaker operating mechanism comprising an integral piece for a circuit breaker operating mechanism cylinder according to the first aspect of the utility model.
According to an alternative embodiment of the utility model, the operating mechanism comprises a working cylinder formed by fixedly connecting a cylinder body and a cylinder head to each other, and the integral piece constitutes the cylinder head.
Compared with the prior art, the integrated part for the operating cylinder of the circuit breaker operating mechanism has a plurality of beneficial technical effects, in particular: by integrally forming the energy storage module with the high-pressure oil cavity and at least one part of the working cylinder, the number of parts of the breaker operating mechanism is reduced, and the oil leakage risk between the working cylinder and the energy storage module in the prior art is eliminated; in addition, the position of the energy storage piston in the energy storage module can be ensured, so that assembly errors are minimized; furthermore, the integrated part has simple structure, convenient manufacture and lower cost, thus having wide adaptability.
Drawings
Other features and advantages of the present utility model will be better understood from the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof.
Fig. 1 is a schematic perspective view of one embodiment of a single piece for a circuit breaker operating mechanism cylinder in accordance with the present utility model;
FIG. 2 is a schematic top view of the integrated part of FIG. 1;
FIG. 3 is a schematic side view of the integrated part of FIG. 1;
FIG. 4 is a schematic cross-sectional view taken along the plane A-A in FIG. 2;
FIG. 5 is a schematic cross-sectional view taken along the plane B-B in FIG. 2;
fig. 6 is a schematic cross-sectional view taken along the plane C-C in fig. 3.
It is to be understood that the drawings are not solely for the purposes of illustration and description of the present utility model, but are intended as a definition of the limits of the utility model, if desired.
Detailed Description
The making and using of the embodiments are discussed in detail below. It should be understood, however, that the detailed description and the specific examples, while indicating specific ways of making and using the utility model, are given by way of illustration only and are not intended to limit the scope of the utility model.
In this document, expressions of directions such as "top", "bottom", "axial", "radial", and the like indicate the structural positions of the respective components when described, not absolute, but relative. When the individual components are arranged as shown in the figures, these expressions of indication direction are appropriate, but when the position of the individual components in the figures is changed, these expressions of indication direction should also be changed accordingly.
A preferred embodiment of the integrated part for a circuit breaker operating mechanism cylinder of the present utility model is described below with the aid of the accompanying drawings. Fig. 1 to 3 show a perspective view, a plan view and a side view, respectively, of the integrated member H according to the preferred embodiment, fig. 4 is a sectional view taken along a plane A-A in fig. 2, fig. 5 is a sectional view taken along a plane B-B in fig. 2, and fig. 6 is a sectional view taken along a plane C-C in fig. 3.
It will be appreciated that the illustrated unitary piece H forms at least part of the operating cylinder of the operating mechanism (typically a hydraulic spring mechanism) of the high voltage circuit breaker. More specifically, the operating mechanism of the high-voltage circuit breaker comprises a working cylinder, a piston rod, an energy storage piston, a spring, an energy storage module, a booster pump, a control valve, a piston rod self-locking device and other components arranged on the working cylinder, wherein the working cylinder can be composed of a cylinder body and a cylinder head fixedly connected to the top of the cylinder body through a fastener such as a bolt, and the illustrated integrated piece H forms the cylinder head of the working cylinder and is integrated with the energy storage module of the operating mechanism. According to one embodiment variant, the one-piece part can form the entire working cylinder (i.e. comprising the cylinder head and the cylinder body) and be integrated with an energy storage module arranged on the cylinder head.
As shown in fig. 1 to 3, the integrated part H, which is manufactured, for example, by casting and machining, includes a body 100 of a generally cylindrical shape and at least one energy storage module 200 integrally protruding radially outward from a side of the body 100, such as the three illustrated energy storage modules 200 uniformly distributed at the same angular interval around the body 100. Furthermore, between two adjacent energy storage modules 200, a plurality of fitting interfaces are formed at the side of the body 100, including, for example, a first interface 103 for fitting a booster pump, a second interface 104 for fitting a control valve, and a third interface 105 for fitting a piston rod self-locking device.
As shown in fig. 4 to 6, the integral member H defines a plurality of functional cavities. More specifically, the body 100 defines a high pressure working chamber 101, the high pressure working chamber 101 allowing the piston rod of the operating mechanism to move axially therein and including a middle working chamber 1011 located in the middle of the body 100 and a bottom working chamber 1012 located at the bottom of the body 100 and communicating with the middle working chamber 1011. The radial dimension of the intermediate working chamber 1011 is adapted to the radial dimension of the rod portion of the piston rod to allow the rod portion to pass therethrough and move axially therein. The radial dimension of the bottom working chamber 1012 is greater than the radial dimension of the intermediate working chamber 1011 and the bottom working chamber 1012 is aligned with the working chamber defined by the cylinder below. According to this embodiment, the top of the body 100 also preferably defines a low pressure oil chamber 102 isolated from the high pressure working chamber 101. Furthermore, each energy storage module 200 delimits a high-pressure oil chamber 201, the radial dimensions of the high-pressure oil chamber 201 being adapted to the radial dimensions of the energy storage piston of the actuating mechanism, and the high-pressure oil chamber 201 being able to store high-pressure oil for driving the energy storage piston to move axially therein.
As also shown in fig. 4-6, the unitary member H also defines a plurality of fluid passages through which hydraulic oil may pass, including, but not limited to, a first passage 301, a second passage 302, a third passage (not shown), a fourth passage 304, a fifth passage (not shown), a sixth passage 306, and a seventh passage (not shown), for example. The first passage 301 places the intermediate working chamber 1011 of the high-pressure working chamber 101 in fluid communication with the first port 103, i.e., in fluid communication with a booster pump fitted to the first port 103. The second passage 302 places the intermediate working chamber 1011 of the high-pressure working chamber 101 in fluid communication with the high-pressure oil chamber 201. According to this embodiment, as shown in fig. 6 in particular, the integral member H delimits three second passages 302 and allows the intermediate working chamber 1011 to be in fluid communication with the three high-pressure oil chambers 201 through these three second passages 302, respectively. The third passage places the high pressure oil chamber 201 in fluid communication with the second port 104, i.e. with a control valve fitted to the second port 104. The fourth passage 304 places the second port 104 (i.e., the control valve) in fluid communication with the piston rod drive oil chamber defined by the underlying cylinder. The fifth passage places the low-pressure oil chamber 102 in fluid communication with the first port 103, i.e. with a booster pump fitted to the first port 103. The sixth passage 306 places the bottom of each of the energy storage modules 200 in fluid communication with the low pressure oil chamber 102 to enable recovery of hydraulic oil leaking from the high pressure oil chamber 201 of each of the energy storage modules 200. The seventh passage places the low pressure oil chamber 102 in fluid communication with the piston rod drive oil chamber defined by the underlying cylinder.
The working principle of the operating mechanism is briefly described below. When the booster pump is started, hydraulic oil enters the booster pump from the low-pressure oil cavity 102 through the fifth channel, is pressurized by the booster pump, reaches the high-pressure working cavity 101 through the first channel 301, reaches the high-pressure oil cavity 201 of the energy storage module 200 through the second channel 302, and drives the energy storage piston to move downwards so as to realize compression energy storage of the spring. When the closing action starts, the control valve opens the third channel, the spring releases energy to drive high-pressure oil to enter the control valve from the high-pressure oil cavity 201 through the third channel, and then the high-pressure oil reaches a piston rod driving oil cavity limited by the lower cylinder body through the fourth channel 304, so that the piston rod moves upwards and axially in the high-pressure working cavity 101 under the driving of the high-pressure oil to drive the circuit breaker contact body to realize the closing action. In contrast, when the opening action starts, the control valve closes the third passage, so that the high-pressure oil cannot reach the piston rod driving oil chamber via the control valve, and at this time, the low-pressure oil reaches the piston rod driving oil chamber from the low-pressure oil chamber 102 via the seventh passage, and the piston rod can move downward in the high-pressure working chamber 101, so as to drive the circuit breaker contact body to realize the opening action.
According to the utility model, since the energy storage module and at least a part of the working cylinder are integrated into one piece, for example by casting or the like, not only the number of parts of the operating mechanism is reduced, but also the risk of oil leakage between the working cylinder and the energy storage module is eliminated. Furthermore, in the case of a plurality of energy storage modules, the position of the energy storage pistons in these energy storage modules can be ensured without being affected by the assembly accuracy.
While the foregoing has described the technical content and features of the present utility model, it will be appreciated that those skilled in the art, upon attaining the teachings of the present utility model, may make variations and improvements to the concepts disclosed herein, which fall within the scope of the present utility model.
The above description of embodiments is illustrative and not restrictive, and the scope of the utility model is defined by the claims.
Claims (8)
1. An integrated piece for a circuit breaker operating mechanism cylinder, comprising:
-a body (100), the body (100) defining a high pressure working chamber (101), a first channel (301) and a second channel (302), the high pressure working chamber (101) being adapted to allow a piston rod of the operating mechanism to move axially therein and to be in fluid communication with a booster pump of the operating mechanism through the first channel (301); and
at least one energy storage module (200), the energy storage module (200) protrudes radially outwards from the body (100) and delimits a high pressure oil chamber (201), the high pressure oil chamber (201) being in fluid communication with the high pressure working chamber (101) through the second channel (302) and being adapted to store high pressure oil to drive an energy storage piston of the operating mechanism for movement therein.
2. The integrated piece for a circuit breaker operating mechanism cylinder according to claim 1, characterized in that it comprises three said energy storage modules (200) distributed uniformly around the body (100).
3. The one-piece for a working cylinder of a circuit breaker operating mechanism according to claim 1 or 2, characterized in that the body (100) further delimits a third channel and a fourth channel (304), the third channel being adapted to place the high-pressure oil chamber (201) in fluid communication with a control valve of the operating mechanism, and the fourth channel (304) being adapted to place the control valve in fluid communication with a piston rod-driven oil chamber of the working cylinder.
4. The one-piece for a circuit breaker operating mechanism cylinder according to claim 1 or 2, wherein the body (100) further delimits a low-pressure oil chamber (102) and a fifth passage, the low-pressure oil chamber (102) being isolated from the high-pressure operating chamber (101) and adapted to be in fluid communication with the booster pump through the fifth passage.
5. The integrated piece for a circuit breaker operating mechanism cylinder according to claim 4, characterized in that said body (100) further defines a sixth passage (306), said sixth passage (306) being in fluid communication with said low pressure oil chamber (102) and being adapted to recover hydraulic oil leaking from the high pressure oil chamber (201).
6. The one-piece for a circuit breaker operating mechanism working cylinder of claim 4 wherein the body (100) further defines a seventh passage adapted to place the low pressure oil chamber (102) in fluid communication with a piston rod drive oil chamber of the working cylinder.
7. Circuit breaker operating mechanism, characterized in that it comprises a single piece for a circuit breaker operating mechanism cylinder according to any one of claims 1 to 6.
8. Circuit breaker operating mechanism according to claim 7, characterized in that it comprises a working cylinder formed by a cylinder body and a cylinder head fixedly connected to each other, and in that said integral piece (H) constitutes said cylinder head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320117639.2U CN219350074U (en) | 2023-01-13 | 2023-01-13 | Integrated piece for operating cylinder of breaker operating mechanism and breaker operating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320117639.2U CN219350074U (en) | 2023-01-13 | 2023-01-13 | Integrated piece for operating cylinder of breaker operating mechanism and breaker operating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219350074U true CN219350074U (en) | 2023-07-14 |
Family
ID=87104213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320117639.2U Active CN219350074U (en) | 2023-01-13 | 2023-01-13 | Integrated piece for operating cylinder of breaker operating mechanism and breaker operating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219350074U (en) |
-
2023
- 2023-01-13 CN CN202320117639.2U patent/CN219350074U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240109 Address after: Zurich, SUI Patentee after: Hitachi Energy Co.,Ltd. Address before: Swiss Baden Patentee before: Hitachi energy Switzerland AG |
|
| TR01 | Transfer of patent right |