Energy storage components and operating mechanisms

Abstract

This embodiment provides an energy storage assembly and an operating mechanism. The energy storage assembly includes: a working cylinder having an oil storage channel therein, an oil hole connected to the oil storage channel being provided on the outer wall of the working cylinder; an energy storage cylinder being sleeved on the outer side of the working cylinder and capable of moving up and down along the working cylinder, a socket for the working cylinder to pass through being provided on the bottom wall of the energy storage cylinder; an energy storage device being connected to the energy storage cylinder, the energy storage device being capable of storing energy as the energy storage cylinder moves downward; when the energy storage cylinder is at the upper limit position of the working cylinder, at least part of the opening of the oil hole on the outer side is directly above the upper end surface of the socket hole, and the energy storage device does not store energy; when the energy storage cylinder is at the lower limit position of the working cylinder, the high-pressure oil in the oil storage channel enters the downward-pressing energy storage cylinder through the oil hole, and the energy storage device stores energy. When the energy storage cylinder is at the upper limit position of the working cylinder, the high-pressure oil can apply a downward thrust to the energy storage cylinder through the oil hole, which is conducive to the downward movement of the energy storage cylinder.

Description

Technical Field

[0001] The present invention relates to the field of operating mechanisms of high-voltage switches, and in particular to an energy storage component and an operating mechanism. Background Art

[0002] The operating mechanism for opening and closing the circuit breaker in the existing high-voltage line is mostly a spring hydraulic operating mechanism, such as Figure 1 As shown, the spring hydraulic operating mechanism includes a working cylinder 10', a piston rod located in the working cylinder 10' and an energy storage cylinder 20' sleeved on the outer periphery of the working cylinder 10'. High-pressure oil can enter the energy storage cylinder 20' through the oil storage channel 110' in the working cylinder 10' and the oil hole 120' on the side wall of the working cylinder 10', causing the energy storage cylinder 20' to move downward to squeeze the disc spring 30' and store energy; when energy needs to be released, the disc spring 30' extends, and the high-pressure oil in the energy storage cylinder 20' enters the working cylinder 10' through the oil hole 120', causing the piston rod to extend from the working cylinder 10' to open the gate or retract into the working cylinder 10' to close the gate.

[0003] Specifically, the bottom wall of the energy storage cylinder 20' is provided with a socket 210' for the working cylinder 10' to pass through. When the energy storage cylinder 20' is at the upper limit position, such as in a fully released energy state or an initial assembly state, the outward opening of the oil hole 120' will be blocked by the inner wall of the socket 210'. The current oil hole 120' passes horizontally through the side wall of the working cylinder 10'. At this time, if energy storage is required, the high-pressure oil will apply a horizontal thrust to the energy storage cylinder 20' through the oil hole 120', making it difficult to push the energy storage cylinder 20' downward for energy storage. Summary of the Invention

[0004] Therefore, the object of the present invention is to provide an energy storage assembly and an operating mechanism to at least solve the problem that the energy storage cylinder is difficult to move downward for energy storage when it is in a fully released energy state or an initial assembly state.

[0005] The first embodiment of the present invention provides an energy storage assembly for an operating mechanism. The energy storage assembly includes: a working cylinder having an oil storage channel therein, an oil hole connected to the oil storage channel provided on the outer wall of the working cylinder; an energy storage cylinder sleeved on the outer side of the working cylinder and capable of moving up and down along the working cylinder, a socket provided on the bottom wall of the energy storage cylinder for the working cylinder to pass through; an energy storage device connected to the energy storage cylinder, the energy storage device capable of storing energy as the energy storage cylinder moves downward; wherein, when the energy storage cylinder is at the upper limit position of the working cylinder, at least a portion of the outer opening of the oil hole is located directly above the upper end surface of the socket hole, and the energy storage device does not store energy; when the energy storage cylinder is at the lower limit position of the working cylinder, high-pressure oil in the oil storage channel can enter the downward-pressing energy storage cylinder through the oil hole, and the energy storage device stores energy.

[0006] In addition, the energy storage assembly provided by the above embodiment of the present invention may also have the following additional technical features:

[0007] In some embodiments, the outer periphery of the working cylinder has a first step surface facing the bottom of the working cylinder, and at least a portion of the opening of the oil hole located on the outside passes through the first step surface; when the energy storage cylinder is located at the lower limit position of the working cylinder, the bottom wall of the energy storage cylinder is away from the first step surface, and when the energy storage cylinder is located at the upper limit position of the working cylinder, the bottom wall of the energy storage cylinder is limitedly engaged with the first step surface.

[0008] In some embodiments, the oil through hole extends obliquely outward from the top direction of the working cylinder to the bottom direction of the working cylinder.

[0009] In some embodiments, the outer opening of the oil through hole includes a first sub-opening extending transversely on the first step surface and a second sub-opening extending vertically toward the bottom of the working cylinder.

[0010] In some embodiments, the oil hole is a through hole, a first annular groove distributed circumferentially is provided on the outer wall of the working cylinder near the first step surface, and the second sub-opening is located on the groove wall of the first annular groove.

[0011] In some embodiments, a transversely extending oil hole is also provided on the outer wall of the working cylinder. The oil hole is a through hole and is connected to the oil storage channel. The oil hole is a countersunk hole, and the oil hole is connected to the oil hole. A circumferentially distributed second annular groove is provided on the outer wall of the working cylinder near the first step surface, and the oil hole passes through the bottom wall of the second annular groove.

[0012] In some embodiments, the oil hole includes a lateral extension section and a vertical extension section. The first end section of the lateral extension passes through the inner wall of the working cylinder to communicate with the oil storage channel. The top end of the vertical extension section is connected to the second end of the lateral extension section, and the bottom end of the vertical extension section passes through the first step surface.

[0013] In some embodiments, the energy storage device is a disc spring assembly that is sleeve-shaped and sleeved around the outer periphery of the working cylinder. The disc spring assembly includes a plurality of disc springs stacked along the height direction of the working cylinder, wherein any two adjacent disc springs are symmetrically distributed vertically along the height direction of the working cylinder. The energy storage assembly also includes: an oil pump and an oil storage tank, both connected to the working cylinder, the oil inlet of the oil pump communicating with the first oil outlet of the oil storage tank, the oil outlet of the oil pump communicating with the oil storage channel, and the oil pump capable of pumping high-pressure oil into the oil storage channel; a pressure plate that is generally annular and connected to the energy storage cylinder to move synchronously with the energy storage cylinder, and is used to squeeze the disc spring assembly; an energy storage control device that is connected to the disc spring assembly and is capable of detecting the deformation height of the disc spring assembly and controlling the oil pump to turn on when the disc spring assembly moves to a first set height, and to turn off when the disc spring assembly deforms to a second set height. Among them, when the disc spring group moves to the first set height, the energy storage cylinder is at or below the upper limit position of the working cylinder, and when the disc spring group moves to the second set height, the energy storage cylinder is at the lower limit position of the working cylinder.

[0014] The second aspect of the present invention provides an operating mechanism, which includes: an energy storage assembly as described in any one of the above technical solutions; a piston rod, movably arranged in the working chamber of the working cylinder, the piston rod having a plug body portion at one end close to the bottom of the working chamber, the cavity above the plug body portion in the working chamber is a high-pressure oil chamber, the high-pressure oil chamber is connected to the oil storage channel, and the cavity below the plug body portion in the working chamber is a conversion oil chamber; a control valve assembly, the control valve assembly is used to control the piston rod to move upward under the pressure of the high-pressure oil in the conversion oil chamber to perform a closing operation, and is also used to control the piston rod to move downward under the pressure of the high-pressure oil in the high-pressure oil chamber to perform an opening operation.

[0015] In some embodiments, the control valve assembly includes: a control valve, the control valve includes a valve body and a valve stem movably arranged in the valve body, the valve body has a high-pressure oil valve port, a low-pressure oil valve port and a conversion valve port, the high-pressure oil valve port is connected to the high-pressure oil chamber, the low-pressure oil valve port is connected to the second oil outlet of the oil storage tank of the energy storage component, and the conversion valve port is connected to the conversion oil chamber; a closing valve, when the closing valve is opened, the closing valve can control the valve stem to move to a first set position in the valve body, the high-pressure oil valve port is connected to the conversion valve port through the valve body cavity, and the piston rod is in The high-pressure oil in the conversion oil chamber moves upward to perform the closing operation; the self-defense delay valve, when the closing valve is opened, the high-pressure oil in the valve body can enter the delay channel of the self-defense delay valve, lift the valve core of the self-defense delay valve to open the self-defense delay valve; the opening valve, when the opening valve is opened, the opening valve can control the valve stem to move to the second set position in the valve body when the self-defense delay valve is opened, and the low-pressure oil valve port is connected with the conversion valve port through the inner cavity of the valve body, and the piston rod moves downward under the action of the high-pressure oil in the high-pressure oil chamber to perform the opening operation.

[0016] The energy storage assembly provided by an embodiment of the present invention includes a working cylinder, an energy storage cylinder, and an energy storage device. When energy storage is required, high-pressure oil enters the energy storage cylinder through the oil storage channel within the working cylinder and the oil through-holes on the outer wall of the working cylinder. Under the pressure of the high-pressure oil, the energy storage cylinder is squeezed downward, thereby squeezing the energy storage device to store energy. When energy release is required, the energy storage device releases energy to push the energy storage cylinder upward, and the high-pressure oil within the energy storage cylinder flows through the oil through-holes into the working cylinder to operate. When the energy storage cylinder is at its upper limit position, the energy storage cylinder can be in its initial state after assembly or in a state in which energy has been fully released. The energy storage device is accordingly not storing energy or has fully released energy. In this case, at least a portion of the outer opening of the oil through-hole is positioned directly above the upper end surface of the jack hole. When energy storage is required, the high-pressure oil can apply a downward thrust to the inner surface of the bottom wall of the energy storage cylinder through the oil through-holes, thereby facilitating the downward movement of the energy storage cylinder to squeeze the energy storage device to store energy, making it convenient and reliable to use. After the high-pressure oil squeezes the energy storage cylinder downward for a certain distance, the bottom wall of the energy storage cylinder will release the blockage of the oil hole, and the high-pressure oil can smoothly enter the energy storage cylinder to perform energy storage work.

[0017] Of course, since the structure and position of the oil hole will not change, during the process of the energy storage cylinder moving up and down along the working cylinder, at least a part of the opening of the oil hole on the outside will always be located directly above the upper end surface of the jack hole, which is conducive to the high-pressure oil flowing out of the oil hole to squeeze the energy storage cylinder downward.

[0018] The operating mechanism provided in the embodiment of the present invention has the energy storage component of the above embodiment and thus has the beneficial effects of the above embodiment, which will not be described in detail here.

[0019] Additional aspects and / or advantages of the present general inventive concept will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present general inventive concept. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects and features of the present invention will become more apparent through the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 A cross-sectional schematic diagram of the operating mechanism in the related art is shown when the energy storage cylinder is located at the upper limit position of the working cylinder;

[0022] Figure 2 A schematic structural diagram of a working cylinder according to an embodiment of the present invention is shown;

[0023] Figure 3 A schematic cross-sectional view of a working cylinder according to a first embodiment of the present invention is shown;

[0024] Figure 4 Shown Figure 3 A local enlarged schematic diagram of point I in the middle;

[0025] Figure 5 A schematic cross-sectional view of a working cylinder according to a second embodiment of the present invention is shown;

[0026] Figure 6 Shown Figure 5 A partial enlarged schematic diagram of the J in the middle;

[0027] Figure 7 A schematic cross-sectional view of the operating mechanism of the first embodiment of the present invention is shown when the energy storage cylinder is located at the upper limit position of the working cylinder;

[0028] Figure 8 Shown Figure 7 A local enlarged schematic diagram of the K in the middle;

[0029] Figure 9 A schematic cross-sectional view of an operating mechanism according to an embodiment of the present invention is shown when the energy storage cylinder is located at the lower limit position of the working cylinder;

[0030] Figure 10 A schematic diagram showing the working principle of a high-voltage switch assembly in a closed state according to an embodiment of the present invention is shown;

[0031] Figure 11 A schematic diagram showing the working principle of a high-voltage switch assembly in an open state according to an embodiment of the present invention is shown.

[0032] Figure 1 Description of Figure Numbers:

[0033] 10' working cylinder, 110' oil storage channel, 120' oil hole, 20' energy storage cylinder, 210' jack, 30' disc spring,

[0034] Figures 2 to 11 Description of Figure Numbers:

[0035] 10 working cylinder, 110 oil storage channel, 120 oil hole, 121 first sub-opening, 122 second sub-opening, 130 first step surface, 140 first annular groove, 150 oil hole, 160 high-pressure oil chamber, 170 conversion oil chamber, 180 piston rod, 181 plug body,

[0036] 20 energy storage cylinder, 210 socket,

[0037] 30 energy storage devices,

[0038] 40 oil pumps,

[0039] 50 fuel tanks,

[0040] 60 pressure plates,

[0041] 70 energy storage control device,

[0042] 80 control valve assembly, 810 control valve, 811 valve body, 812 valve stem, 813 high-pressure oil valve port, 814 low-pressure oil valve port, 815 conversion valve port, 820 closing valve, 830 opening valve, 840 self-defense delay valve, 841 delay channel, 842 valve core, a oil circuit one, b oil circuit two, c oil circuit three, d oil circuit four, e oil circuit five. DETAILED DESCRIPTION

[0043] The following detailed description is provided to help the reader gain a comprehensive understanding of the methods, devices and / or systems described herein. However, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be clear after understanding the disclosure of the present application. For example, the order of operations described herein is merely an example and is not limited to those orders set forth herein, but can be changed as will be clear after understanding the disclosure of the present application, except for operations that must occur in a specific order. In addition, for greater clarity and conciseness, descriptions of features known in the art may be omitted.

[0044] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided to illustrate only some of the many possible ways to implement the methods, devices, and / or systems described herein, which will become clear after understanding the disclosure of this application.

[0045] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more.

[0046] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions should not be limited by these terms. Instead, these terms are used solely to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, what is referred to as a first member, first component, first region, first layer, or first portion in the examples described herein may also be referred to as a second member, second component, second region, second layer, or second portion without departing from the teachings of the examples.

[0047] In the specification, when an element such as a layer, a region, or a substrate is described as being “on,” “connected to,” or “coupled to” another element, the element may be directly “on,” “connected to,” or “coupled to” the other element, or one or more other elements may be present therebetween. Conversely, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, no other elements may be present therebetween.

[0048] The terms used herein are only used to describe various examples and are not intended to limit the disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "comprising," "including," and "having" indicate the presence of the described features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. The term "plurality" represents any number of two and more than two.

[0049] The definitions of directional terms such as "above", "below", "top" and "bottom" in this application are based on the moving direction of the piston rod 180, unless otherwise specified, and are based on the directions in the drawings. The moving direction of the piston rod 180 extending out of the working cylinder 10 is considered as "up", and the moving direction of the piston rod 180 retracting into the working cylinder 10 is considered as "down". The upper part of each component is the top, and the lower part of each component is the bottom, and is not restricted by the placement posture of the operating mechanism.

[0050] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art after understanding the present invention. Unless explicitly defined otherwise herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and the present invention, and should not be interpreted in an idealized or overly formal manner.

[0051] The following will be combined Figures 2 to 11 An energy storage assembly, an operating mechanism, and a high-voltage switch assembly provided by embodiments of the present invention are introduced.

[0052] A first aspect of the present invention provides an energy storage component that can store energy for an operating mechanism so that the operating mechanism can perform corresponding opening and closing actions on a high-voltage switch such as a circuit breaker based on the stored energy.

[0053] The energy storage assembly includes a working cylinder 10 , an energy storage cylinder 20 and an energy storage device 30 .

[0054] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the working cylinder 10 has an oil storage channel 110, and an oil through hole 120 communicating with the oil storage channel 110 is provided on the outer wall of the working cylinder 10. The oil storage channel 110 is provided in the working cylinder 10. On the one hand, it can hide the oil storage channel 110 and use the working cylinder 10 to protect the oil storage channel 110. On the other hand, it facilitates the communication between the oil storage channel 110 and other working oil chambers in the working cylinder 10. Therefore, when the energy storage device 30 releases energy, the high-pressure oil in the energy storage cylinder 20 enters the other working oil chambers in the working cylinder 10 through the oil through hole 120 and the oil storage channel 110, thereby promoting the piston rod 180 in the working cylinder 10 to extend out of the working cylinder 10 to open the gate, or retract into the working cylinder 10 to close the gate under the pressure of the high-pressure oil in the other working oil chambers.

[0055] like Figure 7 、 Figure 8 and Figure 9 As shown, the energy storage cylinder 20 is sleeved on the outside of the working cylinder 10 and can move up and down along the working cylinder 10. The energy storage cylinder 20 includes a side wall and a bottom wall located on the inner side of the bottom of the side wall. An energy storage chamber for storing high-pressure oil is formed between the side wall of the energy storage cylinder 20, the bottom wall of the energy storage cylinder 20 and the outer wall of the working cylinder 10. A socket 210 for the working cylinder 10 to pass through is provided on the bottom wall of the energy storage cylinder 20. During the process of the energy storage cylinder 20 moving up and down relative to the working cylinder 10, the socket 210 moves along the outer wall of the working cylinder 10. In order to ensure sealing, the gap between the inner wall of the socket 210 and the outer wall of the working cylinder 10 is usually designed to be extremely small, and even a sealing structure is added to prevent the high-pressure oil in the energy storage chamber from being exposed.

[0056] The energy storage device 30 is connected to the energy storage cylinder 20 and can store energy as the energy storage cylinder 20 moves downward. Figure 7 and Figure 9 As shown, the energy storage device 30 can be a disc spring group, which includes a plurality of disc springs stacked along the height direction of the working cylinder 10, wherein any two adjacent disc springs are symmetrically distributed up and down along the height direction of the working cylinder 10. The disc spring group is stable and reliable in deformation, and can be stably compressed under the extrusion of the energy storage cylinder 20 to store energy, and when releasing energy, it can also smoothly extend and release energy, which can avoid instantaneous complete release of energy or instantaneous complete storage of energy, and avoid the energy storage cylinder 20 moving too fast and colliding with the working cylinder 10 or other structures. Furthermore, the disc spring group is sleeve-shaped and arranged on the outer periphery of the working cylinder 10, and is distributed circumferentially around the working cylinder 10. Compared with a plurality of disc spring groups distributed at intervals in the circumference of the working cylinder 10, it can support the energy storage cylinder 20 more stably, can also deform evenly in the circumferential direction, and is simple to assemble.

[0057] When energy storage is needed, high-pressure oil can be pumped into the oil storage channel 110, and the high-pressure oil enters the energy storage cylinder 20 through the oil hole 120. The energy storage cylinder 20 can move downward along the working cylinder 10 under the pressure of the high-pressure oil, while squeezing the disc spring group, and the disc spring group compresses to store energy. Figure 9 It shows a cross-sectional view of the energy storage cylinder 20 when it is located at the lower limit position of the working cylinder 10. Figure 9 The denser and shallower fillings in the middle represent high-pressure oil, and the sparser dot-shaped fillings represent low-pressure oil. At this time, the high-pressure oil fills the energy storage cylinder 20, and the disc spring group is compressed and energy storage is completed.

[0058] When energy needs to be released, the disc spring group extends to release energy, and the disc spring group pushes the energy storage cylinder 20 to move upward along the working cylinder 10. The high-pressure oil in the energy storage cylinder 20 enters the oil storage channel 110 in the opposite direction through the oil hole 120, and then enters other working oil chambers in the working cylinder 10, thereby realizing the extension or retraction of the piston rod 180. Figure 7 The figure shows a cross-sectional schematic diagram of the energy storage cylinder 20 when it is located at the upper limit position of the working cylinder 10. At this time, the high-pressure oil in the energy storage cylinder 20 can be completely discharged and the stored energy is released. Of course, it can also be used as the position of the energy storage cylinder 20 in the initial assembly state. During the initial assembly, since there is no high-pressure oil pressing down the energy storage cylinder 20, the disc spring group is in an extended state and the energy storage cylinder 20 is located at the upper limit position.

[0059] In the operating mechanism of the related art, such as Figure 1 As shown, a transverse oil hole 120' is provided on the side wall of the working cylinder 10', and a socket 210' is provided on the bottom wall of the energy storage cylinder 20' for the working cylinder 10' to pass through. The energy storage cylinder 20' is sleeved on the outside of the working cylinder 10'. When the energy storage cylinder 20' is at the upper limit position, such as in the state of complete energy release or the initial assembly state, the outward opening of the oil hole 120' will be blocked by the inner wall of the socket 210'. As a result, when energy storage is required, it is difficult to push the energy storage cylinder 20' downward because the high-pressure oil will apply a horizontal thrust to the energy storage cylinder 20' through the oil hole 120', making it difficult to compress the disc spring assembly to store energy.

[0060] In this embodiment, if Figure 7 and Figure 8As shown, when the energy storage cylinder 20 is at the upper limit position of the working cylinder 10, that is, the upper limit position at which the energy storage cylinder 20 can move along the working cylinder 10, which is also the initial assembly position of the energy storage cylinder 20, at least a portion of the outer opening of the oil hole 120 is located directly above the upper end surface of the hole 210. When energy storage is required, high-pressure oil can apply a downward thrust to the inner surface of the bottom wall of the energy storage cylinder 20 through the oil hole 120, thereby facilitating the downward movement of the energy storage cylinder 20 to squeeze the energy storage device 30 for energy storage, making it convenient and reliable to use. After the high-pressure oil squeezes the energy storage cylinder 20 downward a certain distance, the bottom wall of the energy storage cylinder 20 releases the blockage of the oil hole 120, allowing the high-pressure oil to smoothly enter the energy storage cylinder 20 for energy storage.

[0061] Of course, since the structure and position of the oil hole 120 do not change, during the process of the energy storage cylinder 20 moving up and down along the working cylinder 10, at least a portion of the outer opening of the oil hole 120 will always be directly above the upper end surface of the hole 210, which is conducive to the high-pressure oil flowing out of the oil hole 120 to squeeze the energy storage cylinder 20 downward.

[0062] Regarding the location of the oil hole 120, in some embodiments, as shown in FIG. Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the outer periphery of the working cylinder 10 has a first step surface 130 facing the bottom of the working cylinder 10, and at least a portion of the opening of the oil hole 120 located on the outside passes through the first step surface 130. Figure 9 As shown, when the energy storage cylinder 20 is located at the lower limit position of the working cylinder 10, the bottom wall of the energy storage cylinder 20 is away from the first step surface 130, as shown in FIG. Figure 7 and Figure 8 As shown, when the energy storage cylinder 20 is at the upper limit position of the working cylinder 10, the bottom wall of the energy storage cylinder 20 engages with the first stepped surface 130. The design of the first stepped surface 130 not only provides a bearing foundation for the outer opening of the oil hole 120 to be located directly above the bottom wall of the energy storage cylinder 20, but also limits the upward movement of the energy storage cylinder 20. During the energy storage device 30 releasing energy, the energy storage cylinder 20 may move upward excessively and collide with other components on the top.

[0063] Regarding the specific structure of the oil hole 120, in some embodiments, as Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the oil hole 120 extends outwardly from the top of the working cylinder 10 to the bottom of the working cylinder 10. The structure is simple and the processing is convenient.

[0064] As an example, Figure 4 and Figure 6As shown, the outer opening of the oil hole 120 refers to the opening of the oil hole 120 located on the outer wall of the working cylinder 10. This opening includes a first sub-opening 121 extending horizontally on the first step surface 130 and a second sub-opening 122 extending vertically toward the bottom of the working cylinder 10. When machining the oil hole 120, an oblique hole is drilled at the junction of the first step surface 130 and the outer wall of the working cylinder 10, leaving the first sub-opening 121 on the first step surface 130 and the second sub-opening 122 on the outer wall of the working cylinder 10. Compared to opening the oil hole 120 entirely on the first step surface 130, this can reduce the impact on the structural strength of the side wall of the working cylinder 10.

[0065] Further, if Figure 3 and Figure 4 As shown, the oil hole 120 is a through hole, and a circumferentially distributed first annular groove 140 is provided on the outer wall of the working cylinder 10 near the first step surface 130. The second sub-opening 122 is located on the groove wall of the first annular groove 140. During the energy storage process, high-pressure oil can enter the first annular groove 140 through the oil hole 120, so that the high-pressure oil can exert a circumferential squeezing force on the energy storage cylinder 20, thereby facilitating a balanced downward pressure on the energy storage cylinder 20 and preventing the energy storage cylinder 20 from significantly tilting and causing it to become stuck.

[0066] As an example, Figure 5 and Figure 6 As shown, a transversely extending oil hole 150 is also provided on the outer wall of the working cylinder 10. The oil hole 150 is a through hole and is connected to the oil storage channel 110. The oil hole 120 is a countersunk hole, and the oil hole 120 is connected to the oil hole 150. Therefore, during the energy storage process, high-pressure oil can enter the energy storage cylinder 20 through the oil hole 150 and the oil hole 120. The fact that the oil hole 120 is a countersunk hole can reduce the impact of the opening of the oil hole 120 on the structural strength of the side wall of the working cylinder 10. Since the oil hole 150 is connected to the oil hole 120 and the oil hole 150 extends laterally without occupying the first step surface 130, the oil hole 150 has less impact on the structural strength near the first step surface 130.

[0067] Furthermore, a circumferentially distributed second annular groove (not shown) is provided on the outer wall of the working cylinder 10 near the first step surface 130. The oil hole 150 extends through the bottom wall of the second annular groove. Its function is similar to that of the first annular groove 140 described above and will not be further described here.

[0068] Regarding the specific structure of the oil hole 120, in other embodiments, the oil hole 120 includes a transversely extending section (not shown) and a vertically extending section (not shown). The first end of the transversely extending section penetrates the inner sidewall of the working cylinder 10 to communicate with the oil storage channel 110. The top end of the vertically extending section communicates with the second end of the transversely extending section, and the bottom end of the vertically extending section penetrates the first stepped surface 130. In this case, the outer opening of the oil hole 120 is completely located on the first stepped surface 130 and is entirely located directly above the bottom wall of the energy storage cylinder 20.

[0069] The oil hole 120 can have various forms, as long as at least a portion of the outer opening of the oil hole 120 is located directly above the bottom wall of the energy storage cylinder 20, so that the high-pressure oil can apply downward pressure to the bottom wall of the energy storage cylinder 20, it conforms to the technical concept of this embodiment.

[0070] In some embodiments, the energy storage assembly also includes: an oil pump 40 and an oil storage tank 50, both of which are connected to the working cylinder 10, the oil inlet of the oil pump 40 is connected to the first oil outlet of the oil storage tank 50, and the oil outlet of the oil pump 40 is connected to the oil storage channel 110, and the oil pump 40 can pump high-pressure oil into the oil storage channel 110; a pressure plate 60, which is roughly annular, and the pressure plate 60 is connected to the energy storage cylinder 20 to move synchronously with the energy storage cylinder 20, and the pressure plate 60 is used to squeeze the disc spring group; an energy storage control device 70, which is connected to the disc spring group, and the energy storage control device 70 can detect the deformation height of the disc spring group, and control the oil pump 40 to open when the disc spring group moves to a first set height, and control the oil pump 40 to close when the disc spring group is deformed to a second set height.

[0071] In these embodiments, the energy storage control device 70 monitors the deformation height of the disc spring group, thereby monitoring the stored energy, and promptly controlling the oil pump 40 to open so that the high-pressure oil can be used to squeeze the disc spring group for energy storage. This can effectively prevent the operating mechanism from being unable to effectively control the piston rod 180 in the working cylinder 10 to perform the corresponding action due to insufficient energy stored in the disc spring group after receiving the opening or closing command. The energy storage control device 70 can also control the oil pump 40 to shut down in time to prevent the oil pump 40 from sending too much high-pressure oil into the energy storage cylinder 20, resulting in excessive pressure in the energy storage cylinder 20 and the oil storage channel 110, affecting the safety of product use. Of course, to ensure the safety of product use, the pressure relief device of the operating mechanism can also be used for pressure relief, which is a double-layer protection.

[0072] Furthermore, when the disc spring assembly moves to the first set height, the energy storage cylinder 20 is located at or below the upper limit position of the working cylinder 10. If the energy storage cylinder 20 is located at the upper limit position of the working cylinder 10 when the disc spring assembly moves to the first set height, the energy storage control device 70 will replenish energy after the disc spring assembly has completely released its energy. If the energy storage cylinder 20 is below the upper limit position when the disc spring assembly moves to the first set height, the energy storage control device 70 will replenish energy before the disc spring assembly has completely released its energy, thereby facilitating the operating mechanism to promptly perform the opening or closing action at any time when receiving an opening or closing command based on the energy stored in the disc spring assembly, thereby avoiding situations where insufficient energy is present and energy replenishment is untimely.

[0073] It should be noted that if the energy storage cylinder 20 is below the upper limit position when the disc spring assembly moves to the first set height, then, except during initial assembly, during normal operation of the operating mechanism, the energy storage cylinder 20 will always be below the upper limit position. During this process, the oil hole 120 will not be blocked by the inner wall of the insertion hole 210. In this case, high-pressure oil will smoothly enter the energy storage cylinder 20 through the oil hole 120. Although the effect of the high-pressure oil at the opening of the oil hole 120 on the downward energy storage cylinder 20 is less obvious than when it is at the upper limit position, it still helps to squeeze the oil storage cylinder downward compared to when the oil hole 120 passes horizontally through the side wall of the working cylinder 10.

[0074] Furthermore, when the disc spring assembly moves to the second set height, the energy storage cylinder 20 is located at or above the lower limit position of the working cylinder 10. If the energy storage cylinder 20 is at the lower limit position of the working cylinder 10 when the disc spring assembly moves to the second set height, the energy storage control device 70 will control the oil pump 40 to stop working when the disc spring assembly is fully compressed and the energy storage reaches the upper limit, so that the energy storage is sufficient. If the energy storage cylinder 20 is above the lower limit position when the disc spring assembly moves to the first set height, the energy storage control device 70 will stop replenishing energy before the disc spring assembly is fully charged, thereby reducing the possibility of excessive pressure in the energy storage cylinder 20 and reducing risks.

[0075] A second embodiment of the present invention provides an operating mechanism, comprising: an energy storage assembly as in any of the above embodiments. The energy storage assembly of any of the above embodiments provides the beneficial effects of any of the above embodiments, which will not be described in detail here.

[0076] The operating mechanism also includes: a piston rod 180, which is movably arranged in the working chamber of the working cylinder 10, and the end of the piston rod 180 close to the bottom of the working chamber has a plug body 181, and the cavity above the plug body 181 in the working chamber is a high-pressure oil chamber 160, and the high-pressure oil chamber 160 is connected to the oil storage channel 110, and the cavity below the plug body 181 in the working chamber is a conversion oil chamber 170; a control valve assembly 80, and the control valve assembly 80 is used to control the piston rod 180 to move upward under the pressure of the high-pressure oil in the conversion oil chamber 170 to perform a closing operation, and is also used to control the piston rod 180 to move downward under the pressure of the high-pressure oil in the high-pressure oil chamber 160 to perform an opening operation.

[0077] In this embodiment, the control of the opening and closing action and the control of energy storage can be independent of each other. The energy storage control device 70 of the energy storage assembly does not need to consider the position of the piston rod 180, and can only consider the deformation height of the disc spring group to store energy. The energy storage control device 70 can observe the deformation height of the disc spring group at any time and store energy in time. During the energy storage process, the control valve assembly 80 can control the piston rod 180 to move up, or control the piston rod 180 to move down, or remain unchanged and keep the piston rod 180 in the original opening position or the original closing position. The change of the control valve assembly 80 does not need to consider the energy storage situation. After receiving the opening or closing instruction, it can control the change of the corresponding valve body 811, and directly use the energy stored in the disc spring group, and use the high-pressure oil flowing out of the energy storage cylinder 20 to control the piston rod 180 to perform the corresponding action. The energy released by the disc spring group can be used for both opening and closing.

[0078] Further, if Figure 10 and Figure 11 As shown, the control valve assembly 80 includes a control valve 810 , a closing valve 820 , a self-defense delay valve 840 and a gate valve 830 .

[0079] The control valve 810 includes a valve body 811 and a valve stem 812 movably arranged in the valve body 811. The valve body 811 has a high-pressure oil valve port 813, a low-pressure oil valve port 814 and a conversion valve port 815. The high-pressure oil valve port 813 is connected to the high-pressure oil chamber 160, the low-pressure oil valve port 814 is connected to the second oil outlet of the oil storage tank 50, and the conversion valve port 815 is connected to the conversion oil chamber 170.

[0080] After receiving the closing command, the closing valve 820 opens. The closing valve 820 can control the valve rod 810 to move to the first set position in the valve body 811. The high-pressure oil valve port 813 is connected to the conversion valve port 815 through the inner cavity of the valve body 811. The piston rod 180 moves upward under the action of the high-pressure oil in the conversion oil chamber 170 to perform the closing operation.

[0081] At the same time, when the closing valve 820 is opened, the high-pressure oil in the valve body 811 can enter the delay channel 841 of the self-defense delay valve 840, pushing up the valve core 842 of the self-defense delay valve 840 to open the self-defense delay valve 840.

[0082] After receiving the opening command, the opening valve 830 opens. When the self-defense delay valve 840 is open, the opening valve 830 can control the valve rod 810 to move to the second set position in the valve body 811. The low-pressure oil valve port 814 is connected to the conversion valve port 815 through the inner cavity of the valve body 811. The piston rod 180 moves downward under the action of the high-pressure oil in the high-pressure oil chamber 160 to perform the opening operation.

[0083] The following references Figure 10 and Figure 11 The working principle of the operating mechanism of a specific embodiment of the present invention when continuously receiving closing-opening commands is introduced. Figure 10 and Figure 11 The denser fillings in the middle represent high-pressure oil, and the sparser dot fillings represent low-pressure oil.

[0084] like Figure 10 As shown, after the control valve assembly 80 receives the closing command, the closing valve 820 opens, and the oil circuit 3 c and the oil circuit 4 d are connected. The high-pressure oil near the high-pressure oil valve port 813 can be depressurized through the oil circuit 3 c, causing the high-pressure oil at the top of the valve stem 812 to be depressurized to the vicinity of the high-pressure oil valve port 813 through the central channel of the valve stem 812. In addition, the high-pressure oil in the oil storage channel 110 can enter the bottom of the valve body 811 through the high-pressure oil valve port 813 on the valve body 811, the oil circuit 3 c, and the oil circuit 4 d. This allows the valve stem 812 to move upward under the action of the high-pressure oil, causing the high-pressure oil valve port 813 and the conversion valve port 815 to be connected. This allows the high-pressure oil in the oil storage channel 110 to enter the conversion oil chamber 170 through the high-pressure oil valve port 813 and the conversion valve port 815. The piston rod 180 is pushed upward by the high-pressure oil in the conversion oil chamber 170, closing the switch joint of the high-voltage switch (such as a circuit breaker) and performing the closing operation.

[0085] During the upward movement of the valve stem 812, oil circuit three c and oil circuit two b are connected, and the high-pressure oil in oil circuit three c can enter the delay channel 841 of the self-defense delay valve 840 through oil circuit two b, thereby pushing the valve core 842 to move upward until the valve core 842 moves into place. At this time, the connecting hole on the valve core 842 can connect oil circuit one a and oil circuit five e, and the self-defense delay valve 840 is opened.

[0086] After receiving the gate opening command, the gate opening valve opens. Although the gate opening valve is open, if oil circuit 1a and oil circuit 5e are not connected to each other, then oil circuit 4 and oil circuit 5 are still connected, which is similar to a broken circuit. Therefore, the valve core 842 needs to be moved up to its proper position, and oil circuit 1a and oil circuit 5e need to be connected to each other through the connecting hole on the valve core 842 before the oil circuit can be unobstructed. It takes a certain amount of time for the valve core 842 to move up, so the time it takes for the high-pressure oil to flow in the delay channel 841 and the time it takes for the valve core 842 to move up to its proper position can be used as the delay time. Only after a certain delay can the subsequent gate opening action be performed, avoiding instantaneous gate opening after closing and reducing the possibility of malfunction of the operating mechanism. In addition, the use of physical delay rather than timer delay has high reliability.

[0087] like Figure 11 As shown, after the delay ends, that is, after the self-defense delay valve 840 is opened, the gate valve is in the open state, the oil circuit 4d, the oil circuit 5e, the oil circuit 1a and the energy storage tank are connected, and the high-pressure oil at the bottom of the valve stem 812 can be quickly depressurized through the oil circuit 4d, the oil circuit 5e, and the oil circuit 1a, so that the valve stem 812 moves downward instantaneously, and the high-pressure oil at the conversion valve port 815 and the high-pressure oil valve port 813 can be depressurized to the top of the valve body 811 through the central channel of the valve body 811, so that the valve body 811 can move downward under the action of the high-pressure oil at the top, so that the conversion valve port 815 is connected with the low-pressure oil valve port 814. At this time, the low-pressure oil in the oil storage tank 50 can enter the conversion oil chamber 170 through the low-pressure oil valve port 814 and the conversion valve port 815. The piston rod 180 moves downward under the action of the high-pressure oil in the high-pressure oil chamber 160, pulling open the switch connector of the high-pressure switch to perform the opening operation.

[0088] The third aspect of the present invention provides a high-voltage switch assembly, which includes: a high-voltage switch (not shown in the figure), an operating mechanism as in any of the above-mentioned embodiments, and a high-voltage switch control device (not shown in the figure). The piston rod 180 is connected to the switch connector of the high-voltage switch, and the piston rod 180 can pull the high-voltage switch to open or close; the high-voltage switch control device is connected to the control valve assembly 80, and is used to control the piston rod 180 through the control valve assembly 80 to perform an opening operation or a closing operation. The high-voltage switch assembly provided by this embodiment has the beneficial effects of any of the above-mentioned embodiments because it has the operating mechanism of any of the above-mentioned embodiments, which will not be repeated here.

[0089] Furthermore, the high-voltage switch control device may include a manual button to manually control the opening or closing of the high-voltage switch.

[0090] Furthermore, the high-voltage switch control device may also include a detection module, which uses the detection module to detect whether there is any abnormality in the high-voltage circuit where the high-voltage switch is located, such as short circuit, open circuit, voltage instability, etc., and control the opening or closing of the high-voltage switch accordingly.

[0091] Furthermore, the high-voltage switch assembly also includes: an installation box (not shown in the figure), an insulating gas protection chamber (not shown in the figure) is provided on the top of the installation box, and the high-voltage switch is arranged in the insulating gas protection chamber; the operating mechanism is arranged in the installation box, and a through hole is provided on the top wall of the installation box, and the piston rod 180 is connected to the switch connector of the high-voltage switch through the through hole.

[0092] Although the embodiments of the present invention have been described in detail above, those skilled in the art may make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the present invention. It should be understood that, in the opinion of those skilled in the art, such modifications and variations will still fall within the spirit and scope of the embodiments of the present invention as defined in the claims.

Claims

1. An energy storage component for an operating mechanism, characterized in that: The energy storage component includes: A working cylinder (10), wherein the working cylinder (10) has an oil storage channel (110) therein, and an oil hole (120) communicating with the oil storage channel (110) is provided on an outer wall of the working cylinder (10); An energy storage cylinder (20) is sleeved on the outside of the working cylinder (10) and is movable up and down along the working cylinder (10); a socket (210) for the working cylinder (10) to pass through is provided on the bottom wall of the energy storage cylinder (20); An energy storage device (30) is connected to the energy storage cylinder (20), and the energy storage device (30) is capable of storing energy as the energy storage cylinder (20) moves downward; When the energy storage cylinder (20) is located at the upper limit position of the working cylinder (10), at least a portion of the outer opening of the oil hole (120) is located directly above the upper end surface of the hole (210), and the energy storage device (30) does not store energy; when the energy storage cylinder (20) is located at the lower limit position of the working cylinder (10), the high-pressure oil in the oil storage channel (110) enters through the oil hole (120) to press down the energy storage cylinder (20), and the energy storage device (30) stores energy; The outer periphery of the working cylinder (10) has a first step surface (130) facing the bottom of the working cylinder (10), and at least a portion of the opening of the oil hole (120) located on the outside passes through the first step surface (130); when the energy storage cylinder (20) is located at the lower limit position of the working cylinder (10), the bottom wall of the energy storage cylinder (20) is away from the first step surface (130); when the energy storage cylinder (20) is located at the upper limit position of the working cylinder (10), the bottom wall of the energy storage cylinder (20) is limitedly matched with the first step surface (130); The energy storage device (30) is a disc spring group, which is sleeve-shaped and sleeved on the outer periphery of the working cylinder (10), and the disc spring group includes a plurality of disc springs stacked along the height direction of the working cylinder (10), wherein any two adjacent disc springs are symmetrically distributed in the vertical direction of the height direction of the working cylinder (10); The energy storage component further includes: An oil pump (40) and an oil storage tank (50) are both connected to the working cylinder (10); an oil inlet of the oil pump (40) is connected to a first oil outlet of the oil storage tank (50); an oil outlet of the oil pump (40) is connected to the oil storage channel (110); and the oil pump (40) is capable of pumping high-pressure oil into the oil storage channel (110); A pressure plate (60) is generally annular, the pressure plate (60) being connected to the energy storage cylinder (20) to move synchronously with the energy storage cylinder (20), and the pressure plate (60) is used to compress the disc spring assembly; An energy storage control device (70) is connected to the disc spring group, and the energy storage control device (70) is capable of detecting the deformation height of the disc spring group and controlling the oil pump (40) to turn on when the disc spring group moves to a first set height, and controlling the oil pump (40) to turn off when the disc spring group deforms to a second set height; When the disc spring group moves to a first set height, the energy storage cylinder (20) is located at or below the upper limit position of the working cylinder (10); when the disc spring group moves to a second set height, the energy storage cylinder (20) is located at or above the lower limit position of the working cylinder (10).

2. The energy storage assembly according to claim 1, characterized in that The oil through hole (120) extends outwardly from the top direction of the working cylinder (10) to the bottom direction of the working cylinder (10).

3. The energy storage assembly according to claim 2, characterized in that: The outer opening of the oil hole (120) comprises a first sub-opening (121) extending transversely on the first step surface (130) and a second sub-opening (122) extending vertically toward the bottom of the working cylinder (10).

4. The energy storage assembly according to claim 3, characterized in that The oil hole (120) is a through hole, and a first annular groove (140) distributed circumferentially is provided on the outer wall of the working cylinder (10) at a position close to the first step surface (130), and the second sub-opening (122) is located on the groove wall of the first annular groove (140).

5. The energy storage assembly according to claim 3, characterized in that: A transversely extending oil hole (150) is further provided on the outer side wall of the working cylinder (10); the oil hole (150) is a through hole and communicates with the oil storage channel (110); the oil hole (120) is a countersunk hole, and the oil hole (120) is in communication with the oil hole (150); A circumferentially distributed second annular groove is provided on the outer side wall of the working cylinder (10) near the first step surface (130), and the oil hole (150) passes through the bottom wall of the second annular groove.

6. The energy storage assembly according to claim 1, characterized in that: The oil hole (120) comprises a transverse extension section and a vertical extension section, wherein the first end section of the transverse extension penetrates the inner wall of the working cylinder (10) to communicate with the oil storage channel (110), the top end of the vertical extension section communicates with the second end of the transverse extension section, and the bottom end of the vertical extension section penetrates the first step surface (130).

7. An operating mechanism, characterized in that: The operating mechanism comprises: The energy storage assembly according to any one of claims 1 to 6; A piston rod (180) is movably disposed in a working chamber of the working cylinder (10); an end of the piston rod (180) close to the bottom of the working chamber has a plug body (181); a cavity in the working chamber located above the plug body (181) is a high-pressure oil chamber (160); the high-pressure oil chamber (160) is connected to the oil storage channel (110); and a cavity in the working chamber located below the plug body (181) is a conversion oil chamber (170); A control valve assembly (80) is used to control the piston rod (180) to move upward under the pressure of the high-pressure oil in the conversion oil chamber (170) to perform a closing operation, and is also used to control the piston rod (180) to move downward under the pressure of the high-pressure oil in the high-pressure oil chamber (160) to perform an opening operation.

8. The operating mechanism according to claim 7, characterized in that: The control valve assembly (80) comprises: A control valve (810), the control valve (810) comprising a valve body (811) and a valve stem (812) movably disposed within the valve body (811), the valve body (811) having a high-pressure oil valve port (813), a low-pressure oil valve port (814), and a conversion valve port (815), the high-pressure oil valve port (813) being in communication with the high-pressure oil chamber (160), the low-pressure oil valve port (814) being in communication with a second oil outlet of the oil storage tank (50) of the energy storage assembly, and the conversion valve port (815) being in communication with the conversion oil chamber (170); A closing valve (820), when the closing valve (820) is opened, the closing valve (820) can control the valve stem (812) to move to a first set position in the valve body (811), the high-pressure oil valve port (813) is connected to the conversion valve port (815) through the inner cavity of the valve body (811), and the piston rod (180) moves upward under the action of the high-pressure oil in the conversion oil cavity (170) to perform a closing operation; A self-defense delay valve (840), when the closing valve (820) is opened, the high-pressure oil in the valve body (811) can enter the delay channel (841) of the self-defense delay valve (840), and push up the valve core (842) of the self-defense delay valve (840) to open the self-defense delay valve (840); The gate-opening valve (830) is capable of controlling the valve stem (812) to move to a second set position in the valve body (811) when the gate-opening valve (830) is opened, while the self-defense delay valve (840) is opened. The low-pressure oil valve port (814) is connected to the conversion valve port (815) through the inner cavity of the valve body (811). The piston rod (180) moves downward under the action of the high-pressure oil in the high-pressure oil chamber (160) to perform a gate-opening operation.

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