Protective structure for box transformer substation sampling valve

Abstract

The utility model provides a protection structure for a box transformer substation sampling valve, and belongs to the technical field of box transformer substation sampling valve protection. The box transformer substation sampling valve is located outside the box transformer substation shell, the box transformer substation sampling valve is connected with a transformer oil system in the box transformer substation shell, and the protection structure comprises a protection cover assembly and a locking piece; the protective cover assembly comprises a protective cover body and a cover door, a containing cavity is formed in the protective cover body, a first opening and a second opening which are communicated with the containing cavity are formed in the protective cover body, and the protective cover body is configured to be arranged on the box transformer substation sampling valve in a sleeving mode through the first opening and connected with a box transformer substation shell, so that the box transformer substation sampling valve is arranged in the containing cavity; the cover door is hinged to the protective cover body, and the cover door is configured to rotate relative to the protective cover body so as to open or close the second opening; the locking piece is configured to lock the cover door to the protective cover body when the cover door closes the second opening. According to the protection structure, sampling can be carried out without dismounting the protection cover body, and the sampling efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of sampling valve protection technology, and in particular to a protection structure for sampling valves in transformer substations. Background Technology

[0002] A prefabricated substation is a complete set of power distribution equipment that combines high-voltage switchgear, transformers, and low-voltage power distribution equipment in one or more enclosures according to a certain wiring scheme. By periodically obtaining the transformer oil in the prefabricated substation through the sampling valve, the oil quality can be detected and potential problems inside the transformer can be identified early, which is an important part of preventive maintenance of power equipment.

[0003] In related technologies, the sampling valve of the transformer substation is located outside the transformer substation housing and is connected to the transformer oil system inside the transformer substation housing. In order to avoid the service life of the sampling valve of the transformer substation due to external environmental factors, a protective cover is set up and the protective cover is fixed to the transformer substation housing with screws so that the sampling valve of the transformer substation is placed inside the protective cover cavity.

[0004] However, the use of the aforementioned protective cover results in a long sampling process and low sampling efficiency due to the cumbersome disassembly and assembly of the cover. Utility Model Content

[0005] This application provides a protective structure for a sampling valve in a transformer substation, which solves the problems of cumbersome disassembly and assembly and low sampling efficiency of the protective cover of the sampling valve in the related technology.

[0006] This application provides a protective structure for a sampling valve in a transformer substation. The sampling valve is located outside the transformer substation housing and is connected to the transformer oil system inside the housing. The protective structure includes a protective cover assembly and a locking element. The protective cover assembly includes a protective cover body and a door. The protective cover body has a receiving cavity, and the protective cover body has a first opening and a second opening communicating with the receiving cavity. The protective cover body is configured to be fitted onto the sampling valve through the first opening and connected to the transformer substation housing, so that the sampling valve is placed inside the receiving cavity. The door is hinged to the protective cover body and is configured to rotate relative to the protective cover body to open or close the second opening. The locking element is configured to lock the door to the protective cover body when the second opening is closed.

[0007] In one possible implementation, the protective structure for the sampling valve of the transformer substation provided in this application has a locking element as a lock head; a first latch is provided on the protective cover body, and a second latch is provided on the cover door, the second latch being locked or disengaged from the first latch by the lock head.

[0008] In one possible implementation, the protective structure for the sampling valve of the transformer substation provided in this application further includes a shielding member, which is rotatably connected to the protective cover body. The shielding member is configured to rotate relative to the protective cover body to switch between a clearance position and a shielding position. In the clearance position, it clears the locking head so that the second latch and the first latch disengage. In the shielding position, the second latch and the first latch engage so that it is positioned above the locking head.

[0009] In one possible implementation, the protective structure for the sampling valve of the transformer substation provided in this application has a first opening and a second opening arranged opposite to each other. The protective cover body includes a first side plate, a first latch is disposed on the first side plate, a shield is rotatably connected to the first side plate, and the shield is located above the first latch.

[0010] In one possible implementation, the protective structure for the sampling valve of the transformer substation provided in this application includes a cover plate, the first end of the cover plate extending to a first side plate, the second end of the cover plate extending away from the protective cover body, and the second end of the cover plate being lower than the first end of the cover plate.

[0011] In one possible implementation, the protective structure for the sampling valve of the transformer substation provided in this application further includes a hinge and a support. The first end of the cover plate is hinged to the first side plate through the hinge, the support is connected to the first side plate, the support is located between the cover plate and the first latch, and the end of the support away from the first side plate contacts the cover plate.

[0012] In one possible implementation, the protective structure for the sampling valve of the transformer substation provided in this application further includes a second side plate on the protective cover body, the second side plate being provided with an extension section; the extension section is configured to be located above the cover door when the second opening of the cover door is closed, and the projection of the cover door toward the extension section is located on the extension section.

[0013] In one possible implementation, the protective structure for the sampling valve of the transformer substation provided in this application further includes at least two connecting parts. The connecting parts are connected to the protective cover body, and the pairs of connecting parts are symmetrically arranged on opposite sides of the protective cover body. The connecting parts are used to abut against the transformer substation housing.

[0014] In one possible implementation, the protective structure for the sampling valve of the transformer substation provided in this application further includes a driving member connected to a shielding member, and the driving member is used to drive the shielding member to rotate.

[0015] In one possible implementation, the protective structure for the sampling valve of the transformer substation provided in this application has a handle as the driving component, which is located on the side of the shield away from the first latch; or, the driving component is an electric push rod, which is located on the side of the shield close to the first latch.

[0016] The protective structure provided in this application for a sampling valve of a transformer substation is located outside the transformer substation housing and connected to the transformer oil system inside the housing. The protective structure consists of a protective cover body with a receiving cavity. A first opening is made in the protective cover body, through which the protective cover body is fitted onto the sampling valve and connected to the transformer substation housing, so that the sampling valve is placed inside the receiving cavity, thereby protecting the sampling valve through the protective cover body. In order to facilitate the operation of the sampling valve when oil sampling is required and to provide better protection for the sampling valve when oil sampling is not required, a door and a locking element are provided, and a second opening communicating with the receiving cavity is made in the protective cover body. The door is hinged to the protective cover body, allowing the door to rotate relative to the protective cover body to open or close the second opening.

[0017] Therefore, when oil sampling is not required, the second opening of the cover is closed, and the locking component locks the cover to the protective cover body, thereby achieving a better protection effect for the substation sampling valve. When oil sampling is required, the second opening can be opened by rotating the cover, and the substation sampling valve can be operated. The protective structure provided in this application allows sampling without disassembling the protective cover body, which is beneficial to improving sampling efficiency. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] Figure 1 A schematic diagram of the protective structure for a sampling valve in a transformer substation provided in this application embodiment. Figure 1 ;

[0020] Figure 2 for Figure 1 A diagram illustrating its usage;

[0021] Figure 3 A schematic diagram of the protective structure for a sampling valve in a transformer substation provided in this application embodiment. Figure 2 ;

[0022] Figure 4 for Figure 1 The connection diagram of the driving component and the blocking component.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100 - Protective cover assembly; 200 - Locking element; 300 - Shielding element; 400 - Support element; 500 - Handle; 600 - Electric push rod;

[0025] 110 - Protective cover body; 120 - Cover door; 130 - Connecting part; 210 - Lock head; 220 - First lock; 230 - Second lock; 310 - Cover plate; 320 - Rotating section; 330 - Support section; 340 - Shielding section;

[0026] 111 - Receiving cavity; 112 - First opening; 113 - Second opening; 114 - First side plate; 115 - Second side plate; 311 - First end; 312 - Second end;

[0027] 1151 - Extension Section;

[0028] 20 - Transformer housing;

[0029] 21 - Peripheral side surface. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0034] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0035] In related technologies, some transformer substation designs place the sampling valve outside the substation housing, connected to the transformer oil system inside the housing. This reduces the need for operators to enter the high-voltage electrical equipment, thus lowering the risk of electric shock and other safety accidents. Furthermore, it minimizes interference with the transformer's operation inside the housing, eliminating the need to interrupt transformer operation or implement complex isolation measures during sampling, thereby ensuring the continuity and stability of power supply. Because the sampling valve is located outside the housing, a protective cover is installed to prevent oil theft and to protect its lifespan from external environmental factors. This cover is secured to the housing with screws, placing the sampling valve within the protective cover's cavity.

[0036] However, when using the above-mentioned protective cover, tools are needed to remove the protective cover when sampling is required. After sampling, the protective cover must be put back on. The removal and installation of the protective cover is cumbersome, which will result in a long sampling process and low sampling efficiency.

[0037] In view of this, this application provides a protective structure for a sampling valve of a transformer substation. The sampling valve is located outside the transformer substation housing and is connected to the transformer oil system inside the housing. The protective structure consists of a protective cover body with a receiving cavity. A first opening is made in the protective cover body, and the protective cover body is fitted onto the sampling valve through the first opening and connected to the transformer substation housing, so that the sampling valve is placed inside the receiving cavity, thereby protecting the sampling valve through the protective cover body. In order to facilitate the operation of the sampling valve when oil sampling is required and to provide better protection for the sampling valve when oil sampling is not required, a door and a locking element are provided, and a second opening communicating with the receiving cavity is made in the protective cover body. The door is hinged to the protective cover body, so that the door can rotate relative to the protective cover body to open or close the second opening.

[0038] Therefore, when oil sampling is not required, the second opening of the cover is closed, and the locking component locks the cover to the protective cover body, thereby achieving a better protection effect for the substation sampling valve. When oil sampling is required, the second opening can be opened by rotating the cover, and the substation sampling valve can be operated. The protective structure provided in this application allows sampling without disassembling the protective cover body, which is beneficial to improving sampling efficiency.

[0039] Figure 1 A schematic diagram of the protective structure for a sampling valve in a transformer substation provided in this application embodiment. Figure 1 ; Figure 2 for Figure 1 A usage diagram; it should be noted that... Figures 1 to 3 A simplified schematic diagram of the components in the protective structure is shown; the specific structures of the remaining components in the protective structure are not limited to those shown. Figures 1 to 3 of examples.

[0040] See Figure 1 and Figure 2 The present application provides a protective structure for a sampling valve in a transformer substation. The sampling valve is located outside the transformer substation housing 20 and is connected to the transformer oil system inside the housing 20. The protective structure may include a protective cover assembly 100 and a locking element 200. The protective cover assembly 100 includes a protective cover body 110 and a cover door 120. The protective cover body 110 has a receiving cavity 111, and the protective cover body 110 has a first opening 112 and a second opening 111 communicating with the receiving cavity 111. 3. The protective cover body 110 is configured to be fitted onto the transformer substation sampling valve through the first opening 112 and connected to the transformer substation housing 20, so that the transformer substation sampling valve is placed in the receiving cavity 111; the cover door 120 is hinged to the protective cover body 110 and is configured to rotate relative to the protective cover body 110 to open or close the second opening 113; the locking member 200 is configured to lock the cover door 120 to the protective cover body 110 when the cover door 120 closes the second opening 113.

[0041] In practical implementation, prefabricated substations can be used in onshore wind farms and photovoltaic (PV) fields. They are placed near wind turbines or PV arrays to achieve on-site voltage boosting and power collection. For example, in onshore wind farms, the substations can be placed on the ground near the wind turbine base or integrated into the bottom of the wind turbine tower, supported by internal support components 400. In PV fields, the substations are distributed on the ground around the edges of the PV panel array to collect the DC output from multiple PV strings.

[0042] It is understandable that, in order to facilitate the operation of the sampling valve of the transformer substation, the sampling valve located outside the transformer substation housing 20 is set close to the ground and opposite to the outer peripheral side 21 of the transformer substation housing 20. By opening a clearance opening on the outer peripheral side 21 of the transformer substation housing 20, the sampling valve can be connected to the transformer oil system inside the transformer substation housing 20 through the clearance opening.

[0043] Specifically, the protective cover assembly 100 effectively isolates the sampling valve from the direct influence of the external environment, reduces the intrusion of dust, moisture and contaminants, and helps extend the service life of the sampling valve.

[0044] Furthermore, the hinged design of the cover 120 allows operators to easily and quickly open and close the protective cover when sampling or valve inspection is required, facilitating daily maintenance and improving work efficiency. The locking element 200 increases the security of the protective structure, ensuring that only authorized operators can access the sampling valve through the unlocking operation, providing better protection for the substation sampling valve when not sampling oil.

[0045] The protective cover body 110 can be configured as a rectangular structure and made of stainless steel, aluminum alloy, or corrosion-resistant steel, which can resist corrosion, wind and rain erosion, and ultraviolet radiation in the outdoor environment while facilitating manufacturing. In addition, the protective cover body 110 can also be other shapes and structures, as long as it has a receiving cavity 111 and can open a first opening 112 and a second opening 113 to connect with the transformer housing 20. This application embodiment does not limit this. The following description uses a rectangular protective cover body 110 as an example.

[0046] For example, the rectangular protective cover body 110 includes three sets of opposing side surfaces, each set of side surfaces forming a receiving cavity 111. In each set, two side surfaces have the same area, and the area of ​​each set of side surfaces decreases sequentially. Figure 2 As shown, a first opening 112 can be made on the side with the smallest area. On the basis of ensuring that the protective cover body 110 can be fitted onto the substation sampling valve through the first opening 112, the area of ​​the first opening 112 is set to be smaller than that of the side with the smallest area. In this way, the structure reserved on the side with the smallest area can be used to connect with the substation housing 20, so that the substation sampling valve outside the substation housing 20 is placed in the receiving cavity 111, and the substation sampling valve is protected by the protective cover housing.

[0047] Here, the smallest side of the protective cover and the transformer substation housing 20 can be detachably connected by bolts or fixed by welding; this embodiment does not limit this. It should be noted that this embodiment is described with the first opening 112 located on the smallest side, but this is only an example. In specific applications, the first opening 112 can be located on other sides as needed.

[0048] After the protective cover body 110 is fitted onto the substation sampling valve through the first opening 112 and connected to the substation housing 20, it is combined with... Figure 1 and Figure 2 As shown, the lower side of the protective cover body 110 along the Z direction is close to and opposite to the ground. When the second opening 113 is made on the protective cover body 110, it is sufficient to ensure that the door 120 hinged to the protective cover body 110 can rotate relatively smoothly without interfering with the rotation of the door 120 or the operation of the transformer substation sampling valve in the receiving cavity 111. For example, the second opening 113 can be made on the front side along the Y direction, that is, on the other side with the smallest area; or the second opening 113 can be made on the upper side along the Z direction, or on the left or right side along the X direction.

[0049] Therefore, when oil sampling is not required, the cover 120 closes the second opening 113, and the locking member 200 locks the cover 120 to the protective cover body 110, so as to achieve a better protection effect for the substation sampling valve; when oil sampling is required, the cover 120 can be rotated to open the second opening 113, and the substation sampling valve can be operated. With this design, sampling can be performed without disassembling the protective cover body 110, which helps to improve sampling efficiency.

[0050] It should be noted that the structure of the locking member 200 is not limited in this application embodiment, as long as it can lock the cover 120 onto the protective cover body 110. For example, in conjunction with... Figure 1 and Figure 2 As shown, the second opening 113 is opened on the front side of the protective cover body 110 along the Y direction. The cover door 120 is a plate-shaped structure that matches the second opening 113. The left side of the cover door 120 along the X direction is hinged to the protective cover body 110. The locking member 200 can be set as a mortise lock. The mortise lock is set on the right side of the cover door 120 along the X direction. When the cover door 120 closes the second opening 113, the right side of the cover door 120 is locked to the protective cover body 110 by the mortise lock, thereby fixing the hinged movable end on the left side of the box door.

[0051] In addition, see Figure 1In a specific example, the locking element 200 is a lock head 210; the protective cover body 110 is provided with a first latch 220, and the cover door 120 is provided with a second latch 230. The second latch 230 is locked or unlocked with the first latch 220 through the lock head 210.

[0052] This makes it convenient for operators to maintain the protective structure. If the lock cylinder 210 malfunctions or is damaged, it can be replaced with another lock cylinder 210.

[0053] For example, the first latch 220 is fixedly connected to the protective cover body 110, and the second latch 230 is rotatably connected to the cover door 120. The first latch 220 has a first through hole, and the second latch 230 has a second through hole, wherein the size of the second through hole is larger than the size of the first through hole. After the cover door 120 closes the second opening 113, the second latch 230 is inserted into the first latch 220 through the second through hole, and then the lock head 210 is hung on the first latch 220 through the first through hole to lock it, thereby locking the second latch 230 and the first latch 220.

[0054] When it is necessary to open the door 120, the lock head 210 is unlocked, and then the second latch 230 is rotated to disengage the second latch 230 from the first latch 220. The second latch 230 is disengaged from the first latch 220, thereby allowing the door 120 to be rotated and the second opening 113 to be opened.

[0055] Continue reading Figure 1 In some embodiments, the protective structure for the sampling valve of the transformer substation further includes a shield 300, which is rotatably connected to the protective cover body 110. The shield 300 is configured to rotate relative to the protective cover body 110 to switch between a clearance position and a shield position. In the clearance position, it clears the lock head 210 so that the second latch 230 and the first latch 220 disengage. In the shield position, the second latch 230 and the first latch 220 engage so as to be located above the lock head 210.

[0056] Specifically, when the shielding part 300 is in the shielding position, it is located above the lock head 210, which can protect the lock head 210 from rain and snow, prevent the lock head 210 from being directly exposed to the outside environment and corroded by the environment in severe weather, and reduce the wear of the lock head 210, thereby helping to extend the service life of the lock head 210 and reduce maintenance costs.

[0057] By rotating the shield 300 to the protective cover body 110, the operator can rotate the shield 300 from the shielding position to the avoidance position before sampling or maintenance. This prevents the shield 300 from interfering with the operator's operation of unlocking the cover 120 and the protective cover body 110. For example, when the shield 300 is in the avoidance position, it can avoid the lock head 210, allowing the operator to unlock the lock head 210 without obstruction. Then, the operator can rotate the second latch 230 to make the second latch 230 disengage smoothly from the first latch 220 without the need for complicated tools or cumbersome operating steps.

[0058] The specific structure of the blocking member 300 is not limited in this application embodiment, as long as it is ensured that the blocking member 300 is located above the lock head 210 when rotated to the avoidance position.

[0059] Figure 3 A schematic diagram of the protective structure for a sampling valve in a transformer substation provided in this application embodiment. Figure 2 For example, combined with Figure 3 As shown, the second opening 113 is located on the upper side of the protective cover body 110 along the Z direction. The cover door 120 is hinged to the left side of the protective cover body 110 along the X direction to cover the second opening 113. After the second latch 230 is locked to the first latch 220 by the lock head 210, the lock head 210 rests on the cover door 120 by gravity. The blocking member 300 may include a rotating section 320, a supporting section 330, and a blocking section 340 arranged sequentially. The rotating section 320, the supporting section 330, and the blocking section 340 are all plate-shaped structures, and the blocking member 300 is generally U-shaped. By connecting the rotating section 320 to the right side of the protective cover body 110 along the X direction, the blocking section 340 is located above the lock head 210 in the blocking position. When the blocking member 300 is rotated to the avoidance position, the blocking section 340 deviates from its original position to avoid the lock head 210.

[0060] See Figure 1 and Figure 2 In some examples, the first opening 112 and the second opening 113 are arranged opposite to each other. The protective cover body 110 includes a first side plate 114, a first latch 220 is disposed on the first side plate 114, and a shield 300 is rotatably connected to the first side plate 114, with the shield 300 located above the first latch 220.

[0061] With this configuration, when the blocking member 300 is rotated, it can be positioned above the first latch 220 in both the blocking and avoidance positions. In other words, after the second latch 230 is locked to the first latch 220 by the lock head 210, there can be a deviation between the position of the blocking member 300 after rotation and the blocking position. That is, the position of the blocking member 300 is between the blocking and avoidance positions, so that the blocking member 300 is still above the lock head 210, thus providing effective shielding for the lock head 210 and allowing situations such as improper operation by the operator to occur.

[0062] Combination Figure 2 As shown, the first opening 112 and the second opening 113 are respectively opened on the two sides of the protective cover body 110 along the Y direction, and the first side plate 114 is the right side of the protective cover body 110 along the X direction.

[0063] Figure 4 for Figure 1 The connection diagram between the driving component and the shielding component 300 is shown. (See attached diagram.) Figure 4 Specifically, the shield 300 includes a cover plate 310, a first end 311 of the cover plate 310 extending to a first side plate 114, a second end 312 of the cover plate 310 extending away from the protective cover body 110, and the second end 312 of the cover plate 310 being lower than the first end 311 of the cover plate 310.

[0064] Therefore, the cover plate 310 can achieve a good drainage effect. In rainy or snowy weather, rainwater dripping onto the cover plate 310 will drip down to the ground, and snow is not easy to accumulate.

[0065] In addition, the structure of the shield 300 is simplified, which facilitates manufacturing. For example, the shield 300 can be made of stainless steel plate.

[0066] Continue reading Figure 4 In some embodiments, the protective structure for the sampling valve of the transformer substation further includes a hinge (not shown in the figure) and a support member 400. The first end 311 of the cover plate 310 is hinged to the first side plate 114 through the hinge. The support member 400 is connected to the first side plate 114. The support member 400 is located between the cover plate 310 and the first latch 220. The end of the support member 400 away from the first side plate 114 is in contact with the cover plate 310.

[0067] Here, the blocking position of the cover plate 310 is defined by setting the support member 400. The end of the support member 400 away from the first side plate 114 contacts the cover plate 310, so that when the cover plate 310 is in the blocking position, the force is not directly applied to the lock head 210, protecting the lock head 210 from pressure and extending its service life.

[0068] Combination Figure 1 and Figure 4As shown, in a specific implementation, the cover plate 310 and the first side plate 114 are connected by a hinge, which enables the cover plate 310 to rotate flexibly. The cover plate 310 is rotated upward to avoid the lock head 210. After the cover plate 310 is released, the cover plate 310 will automatically rotate in the opposite direction under the action of gravity. After rotating to contact with the support member 400, the cover plate 310 stops rotating and is in the blocking position. Thus, the operation of rotating the cover plate 310 is more convenient.

[0069] Further, see Figure 1 The protective cover body 110 also includes a second side plate 115, the second side plate 115 being provided with an extension section 1151; the extension section 1151 is configured to be located above the cover door 120 when the cover door 120 closes the second opening 113, and the projection of the cover door 120 toward the extension section 1151 is located on the extension section 1151.

[0070] Specifically, when the second opening 113 is closed by the cover 120, the extension section 1151 can shield rain and snow, preventing rain and snow from entering the receiving cavity 111 through the gap between the cover 120 and the protective cover body 110, thus protecting the transformer substation sampling valve in the receiving cavity 111.

[0071] Combination Figure 1 As shown, the second side plate 115 is the upper side surface of the protective cover body 110 along the Z direction.

[0072] As mentioned earlier, a first opening 112 is made on the side with the smallest area of ​​the protective cover body 110. The area of ​​the first opening 112 is set to be smaller than that of the side with the smallest area, so that the structure reserved on the side with the smallest area can be used to connect with the transformer housing 20. In order to further improve the connection reliability between the protective cover body 110 and the transformer housing 20, and considering that in practical applications, the area of ​​the first opening 112 can also be equal to that of the side with the smallest area, in order to realize the connection between the protective cover body 110 and the transformer housing 20, in some examples, the protective cover assembly 100 also includes at least two connecting parts 130. The connecting parts 130 are connected to the protective cover body 110, and the pairs of connecting parts 130 are symmetrically arranged on opposite sides of the protective cover body 110. The connecting parts 130 are used to abut against the transformer housing 20.

[0073] Therefore, by abutting against the transformer housing 20 through the connecting part 130, the contact area between the protective cover body 110 and the transformer housing 20 is increased, which can prevent the protective cover body 110 from becoming loose.

[0074] For example, combined Figure 2As shown, by providing two connecting portions 130 symmetrically arranged on opposite sides of the protective cover body 110 along the X direction, the protective cover body 110 can achieve better balance and stability after the connecting portions 130 abut against the transformer housing 20. Furthermore, based on the above, connecting portions 130 can also be provided on opposite sides of the protective cover body 110 along the Z direction, connecting the connecting portions 130 to the protective cover body 110. By having four connecting portions 130 abut against the transformer housing 20, the connection strength can be improved.

[0075] In some examples, the protective structure for the sampling valve of the transformer substation also includes a drive unit connected to the shield 300, which is used to drive the shield 300 to rotate.

[0076] Therefore, the operator can drive the blocking component 300 to rotate through the drive component, so that the blocking component 300 can switch between the avoidance position and the blocking position, which is convenient to operate and improves the working experience.

[0077] For example, see Figure 1 , Figure 3 and Figure 4 The driving component is a handle 500, which is located on the side of the cover 300 away from the first latch 220; or, the driving component is an electric push rod 600, which is located on the side of the cover 300 close to the first latch 220.

[0078] Here, by placing the handle 500 on the side of the shield 300 away from the first latch 220, the operator can grip the handle 500 fully and apply appropriate external force to the rotation of the shield 300.

[0079] By setting the electric push rod 600 on the side of the blocking member 300 close to the first latch 220, the electric push rod 600 is connected to the blocking member 300. After the electric push rod 600 is started, the blocking member 300 will rotate away from or towards the lock head 210 under the pushing force of the electric push rod 600, so as to achieve the effect of avoiding or blocking the lock head 210.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A protective structure for a sampling valve in a transformer substation, wherein the sampling valve is located outside the substation housing and is connected to a transformer oil system inside the substation housing, characterized in that, The protective structure includes a protective cover assembly and a locking component; The protective cover assembly includes a protective cover body and a cover door. The protective cover body has a receiving cavity. The protective cover body has a first opening and a second opening that communicate with the receiving cavity. The protective cover body is configured to be sleeved on the transformer substation sampling valve through the first opening and connected to the transformer substation housing, so that the transformer substation sampling valve is placed inside the receiving cavity. The door is hinged to the protective cover body, and the door is configured to rotate relative to the protective cover body to open or close the second opening; The locking element is configured to lock the door to the protective cover body when the door closes the second opening.

2. The protective structure for the sampling valve of the transformer substation according to claim 1, characterized in that, The locking element is a lock head; The protective cover body is provided with a first latch, and the cover door is provided with a second latch. The second latch is locked or unlocked to the first latch by the lock head.

3. The protective structure for the sampling valve of the transformer substation according to claim 2, characterized in that, It also includes a shielding component, which is rotatably connected to the protective cover body; The shield is configured to rotate relative to the protective cover body to switch between a clearance position and a shield position. In the clearance position, it clears the lock head so that the second latch and the first latch disengage. In the shield position, the second latch and the first latch engage so that it is positioned above the lock head.

4. The protective structure for the sampling valve of the transformer substation according to claim 3, characterized in that, The first opening and the second opening are arranged opposite to each other. The protective cover body includes a first side plate, the first latch is arranged on the first side plate, the shield is rotatably connected to the first side plate, and the shield is located above the first latch.

5. The protective structure for the sampling valve of the transformer substation according to claim 4, characterized in that, The shielding member includes a cover plate, a first end of which extends to the first side plate, a second end of which extends away from the protective cover body, and the second end of which is lower than the first end of the cover plate.

6. The protective structure for the sampling valve of the transformer substation according to claim 5, characterized in that, It also includes a hinge and a support member. The first end of the cover plate is hinged to the first side plate through the hinge, the support member is connected to the first side plate, the support member is located between the cover plate and the first latch, and the end of the support member away from the first side plate is in contact with the cover plate.

7. The protective structure for the sampling valve of the transformer substation according to claim 4, characterized in that, The protective cover body also includes a second side plate, and the second side plate is provided with an extension section; The extension is configured to be located above the door when the second opening is closed, and the projection of the door toward the extension is located on the extension.

8. The protective structure for a sampling valve in a transformer substation according to any one of claims 1 to 7, characterized in that, The protective cover assembly also includes at least two connecting parts, which are connected to the protective cover body. The pairs of connecting parts are symmetrically arranged on opposite sides of the protective cover body, and the connecting parts are used to abut against the transformer housing.

9. The protective structure for a sampling valve in a transformer substation according to any one of claims 3 to 7, characterized in that, It also includes a driving component, which is connected to the blocking component and is used to drive the blocking component to rotate.

10. The protective structure for a sampling valve in a transformer substation according to claim 9, characterized in that, The driving component is a handle, which is located on the side of the shield that is away from the first latch; or, the driving component is an electric push rod, which is located on the side of the shield that is close to the first latch.

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