Nuclear power plant 10KV distribution board valve insulation isolation device

Abstract

The utility model relates to an insulation isolation device for a 10KV distribution board valve of a nuclear power plant. Comprising a first substrate and a second substrate which have insulation performance, at least one magnetic attraction piece used for detachably attracting the first substrate and the second substrate to a valve position metal plate, and a moving assembly used for adjusting the size of the area of the overlapped part of the first substrate and the second substrate. The first substrate and the second substrate can be connected in a relatively movable manner to form an insulating plate for isolating the valve, and the first substrate and the second substrate are at least partially overlapped with each other; the magnetic attraction piece is arranged on the first substrate and / or the second substrate; the moving assembly is connected with the first base plate and the second base plate. The insulating isolation device can adapt to valves of different sizes, and meanwhile, the insulating isolation effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of valve insulation isolation tools, in particular to a valve insulation isolation device for a 10KV switchboard of a nuclear power plant. Background Art

[0002] There are a large number of 10KV medium-voltage switchboards in nuclear power plants, and there are many equipment-related operations. When a defect occurs in the high-voltage compartment and causes the equipment to fail to operate normally, emergency defect handling is required. When the switchboard is operating normally, the static contacts on the busbar side or the incoming line side are energized. At this time, entering the high-voltage compartment to eliminate the defect will pose a huge risk of electric shock, and insulation shielding is required.

[0003] The existing switchboard is not equipped with a dedicated valve insulation isolation tool. Generally, when entering the high-voltage compartment for work, the operator needs to have a special operation permit and temporarily find an insulation board for shielding. However, since the insulation board cannot be fixed, this insulation isolation method is still ineffective. During the operation, it is very easy to cause the insulation board to move due to accidental touch, resulting in isolation loopholes, which poses a great safety risk.

[0004] At the same time, different sizes of high-voltage compartments in nuclear power plants require insulation panels of different sizes for insulation isolation, which makes the insulation isolation cost too high and difficult to preserve. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a 10KV switchboard valve insulation isolation device for a nuclear power plant.

[0006] Construct a 10KV switchboard valve insulation isolation device for a nuclear power plant, including:

[0007] A first substrate and a second substrate having insulating properties, wherein the first substrate and the second substrate are relatively movably connected to form an insulating plate for isolating the valve, and the first substrate and the second substrate at least partially overlap each other;

[0008] At least one magnetic attraction member for detachably adsorbing the first substrate and the second substrate onto the metal plate at the valve position, the magnetic attraction member being disposed on the first substrate and / or the second substrate; and

[0009] A moving component is used to adjust the size of the overlapping area of ​​the first substrate and the second substrate, and the moving component is connected to the first substrate and the second substrate respectively.

[0010] In some embodiments, at least one receiving hole for receiving the magnetic attraction component is formed on the first substrate and / or the second substrate, and the magnetic attraction component is fixed in the receiving hole.

[0011] In some embodiments, the number of the magnetic elements is four, and two accommodating holes are formed on the first substrate and the second substrate at intervals, and are respectively formed on the non-overlapping portions of the first substrate and the second substrate.

[0012] In some embodiments, at least one handle is further included, which is fixed to a side of the first substrate and / or the second substrate away from the valve position metal plate.

[0013] In some embodiments, the number of the handles is two, which are fixed to the first substrate and the second substrate respectively, and are fixed to the non-overlapping portions of the first substrate and the second substrate respectively.

[0014] In some embodiments, the number of the magnetic attraction members (4) is four, and two accommodating holes are formed on the first substrate (1) and the second substrate (2) at intervals, and are respectively formed on the non-overlapping portions of the first substrate (1) and the second substrate (2);

[0015] The handles on the first substrate and the second substrate are both disposed between the two accommodating holes.

[0016] In some embodiments, the first substrate and the second substrate are connected to each other in a relatively slidable manner, and the moving components are respectively disposed on the first substrate and the second substrate.

[0017] In some embodiments, the movable component includes at least one insulating bolt, at least one fixing hole is formed on one of the first substrate and the second substrate, and at least one movable hole is formed on the other of the substrates. The movable holes are longitudinally arranged and correspond to at least one of the fixing holes. The insulating bolts are respectively passed through the movable holes and the fixing holes, and their positions in the movable holes are adjustable.

[0018] In some embodiments, the first substrate and the second substrate are both rectangular, and their widths and / or lengths are equal so that the insulating plate formed by partial overlapping of the two is rectangular, and the extension direction of the movable hole is parallel to the overlapping sides of the first substrate and the second substrate.

[0019] In some embodiments, the number of the fixed holes is at least two, and each of the movable holes corresponds to two of the fixed holes;

[0020] And / or, the number of the movable holes is two, and the two movable holes are arranged in parallel and spaced apart.

[0021] The utility model has the following advantages:

[0022] The utility model provides a relatively movable first substrate and a second substrate, so that an insulating plate with adjustable size can be obtained to cope with valves of different sizes; at the same time, by providing at least one magnetic attraction member, the insulating isolation device of the valve of the 10KV distribution board of the nuclear power plant can be detachably adsorbed on the metal plate at the valve position, and the insulating isolation device can be fixed during operation to improve the insulating isolation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0024] Figure 1 It is a structural schematic diagram of a 10KV switchboard valve insulation isolation device for a nuclear power plant in one embodiment of the utility model;

[0025] Figure 2 yes Figure 1 A schematic structural diagram of the first substrate in FIG.

[0026] Figure 3 yes Figure 1 Schematic diagram of the structure of the second substrate. DETAILED DESCRIPTION

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "up", "down", "left", "right", "vertical", "horizontal", "bottom", "inside", "inside", "outside", etc. are based on the directions or positional relationships shown in some of the drawings, and are constructed and operated in a specific direction. They are only for the convenience of describing the present technical solution, and do not indicate that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0028] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0029] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details that hinder the description of the present invention.

[0030] Figures 1 to 3 The invention shows a 10KV switchboard valve insulation isolation device for a nuclear power plant in one embodiment of the utility model, which can shield and insulate the switchboard valve when repairing the internal equipment of the high-voltage compartment to avoid safety risks during operation.

[0031] The 10KV switchboard valve insulation isolation device of a nuclear power plant comprises a first substrate 1, a second substrate 2, a moving component 5 and at least one magnetic attraction component 4. The first substrate 1 and the second substrate 2 are connected in a relatively movable manner, and the two at least partially overlap each other, so that the two can together form an integral size-adjustable insulation plate, which can be applied to switchboard valves of different sizes. The magnetic attraction component 4 is arranged on the first substrate 1 and / or the second substrate 2, and is used to detachably adsorb the insulation plate formed by the first substrate 1 and the second substrate 2 to the metal plate at the valve position, so that the 10KV switchboard valve insulation isolation device of the nuclear power plant is relatively fixed at the valve position during use, and avoid movement during operation to cause shielding failure. The moving component 5 is connected to the first substrate 1 and the second substrate 2 respectively, and is used to adjust the size of the overlapping portion between the first substrate 1 and the second substrate 2, so as to achieve the size adjustment of the insulation plate formed by the two.

[0032] In some embodiments, the first substrate 1 and the second substrate 2 are both rectangular, and have equal dimensions in the length direction and / or width direction, so that the overlapping portion of the two is also rectangular, and the insulating plate formed by connecting the two is also rectangular as a whole.

[0033] In this embodiment, the first substrate 1 and the second substrate 2 are both rectangular, and have the same width dimensions. The two are connected and overlapped in the length direction to form a rectangular insulating plate.

[0034] In some other optional embodiments, the first substrate 1 and the second substrate 2 may also have the same size in the length direction and be connected and overlapped in the width direction. Or the first substrate 1 and / or the second substrate 2 may be configured as other structures such as a circle, an irregular shape, or a polygon.

[0035] The first substrate 1 and the second substrate 2 are both substrates with insulating properties, and in this embodiment, are both epoxy insulating boards.

[0036] In some other optional embodiments, the first substrate 1 and / or the second substrate 2 may also be made of other insulating materials such as rubber, plastic, etc., or may be made of an insulating layer coated on a common plate-like material.

[0037] In some embodiments, a receiving hole at least for receiving the magnetic attraction component 4 is formed on the first substrate 1 and / or the second substrate 2, and the magnetic attraction component 4 is fixed in the receiving hole.

[0038] In some other optional embodiments, a mounting member may be provided, the magnetic member 4 may be accommodated in the mounting member, and the mounting member may be fixed to the first substrate 1 and / or the second substrate 2 by welding, bolting, etc., so as to fix the magnetic member 4. Alternatively, when manufacturing the first substrate 1 and the second substrate 2, the magnetic member 4 may be embedded in the first substrate 1 and / or the second substrate 2.

[0039] like Figure 1 As shown, specifically, the number of the magnetic suction components 4 is four, and two accommodating holes are formed on the first substrate 1 and the second substrate 2 at intervals, and are respectively formed on the non-overlapping parts of the first substrate 1 and the second substrate 2, so as to increase the coverage area of ​​the magnetic suction component 4, evenly distribute the magnetic suction force generated by the magnetic suction component 4 on the insulating plate formed by the first substrate 1 and the second substrate 2, and enhance the stability of fixing the insulating plate to the metal plate at the valve position.

[0040] Read also Figure 2 and Figure 3In this embodiment, the first substrate 1 is formed with a first receiving hole 11 and a second receiving hole 12 at the end away from the second substrate 2 in the length direction, and the first receiving hole 11 and the second receiving hole 12 are respectively formed on both sides of the end in the width direction. The second substrate 2 is formed with a third receiving hole 21 and a fourth receiving hole 22 at the end away from the first substrate 1 in the length direction, and the third receiving hole 21 and the fourth receiving hole 22 are respectively formed on both sides of the end in the width direction, so that four receiving holes are respectively formed at the four corners of the overall rectangular insulating plate formed by the first substrate 1 and the second substrate 2. Four magnetic suction members 4 are respectively fixed in the first receiving hole 11, the second receiving hole 12, the third receiving hole 21 and the fourth receiving hole 22.

[0041] In some other optional embodiments, the number of the magnetic member 4 and the receiving hole can be one, two, three or more, and can be only provided on the first substrate 1, or only provided on the second substrate 2. When the magnetic member 4 is provided on both the first substrate 1 and the second substrate 2, the number of magnetic members 4 provided on the two can also be different, such as only one is provided on the first substrate 1, and two or more are provided on the second substrate 2 at intervals. Since there are too many possible situations, they are not listed here one by one.

[0042] For example Figure 1 As shown, in some embodiments, the nuclear power plant 10KV distribution board valve insulation isolation device also includes at least one handle 3, which is fixed to the side of the first substrate 1 and / or the second substrate 2 away from the valve position metal plate, so that the staff can move the nuclear power plant 10KV distribution board valve insulation isolation device through the handle 3 when fixing the nuclear power plant 10KV distribution board valve insulation isolation device to the valve position metal plate, so as to avoid accidentally touching the static contact on the valve during the movement and fixing process, causing operational safety problems.

[0043] Specifically, there are two handles 3 , which are fixed on the first substrate 1 and the second substrate 2 respectively, and are fixed on the non-overlapping parts of the first substrate 1 and the second substrate 2 respectively, so as to facilitate the operator to take them.

[0044] Read also Figure 2 and Figure 3In this embodiment, the handle 3 is in a concave shape, and its two ends are respectively fixed to the first substrate 1 or the second substrate 2. The first substrate 1 is formed with a first assembly hole 13 and a second assembly hole 14 at the end away from the second substrate 2 in the length direction. The first assembly hole 13 and the second assembly hole 14 are arranged at intervals along the width direction of the first substrate 1 at the end. The two ends of the handle 3 are also provided with assembly holes, so that the two ends of the handle 3 can be respectively provided with assembly parts such as bolts or screws, and penetrated into the assembly holes, the first assembly hole 13 and the second assembly hole 14 to achieve the fixed installation of the handle 3 and the first substrate 1. The end of the second substrate 2 in the length direction away from the first substrate 1 is formed with a third assembly hole 23 and a fourth assembly hole 24, wherein the third assembly hole 23 and the fourth assembly hole 24 are arranged at intervals along the width direction of the second substrate 2 at the end. The other handle 3 is also fixed to the second substrate 2 in the same way, with the two ends corresponding to the third assembly hole 23 and the fourth assembly hole 24 respectively.

[0045] It should be understood that the positional relationship between the first assembly hole 13, the second assembly hole 14 and the first receiving hole 11, the second receiving hole 12 in this embodiment is set so that the first receiving hole 11 and the second receiving hole 12 are respectively located on the upper and lower sides of the first assembly hole 13 and the second assembly hole 14 (i.e., the handle 3) (i.e., the handle 3 is located between the first receiving hole 11 and the second receiving hole 12), but they can be on the same straight line or not, which is not specifically limited here. The positional relationship between the third assembly hole 23, the fourth assembly hole 24 and the third receiving hole 21, the fourth receiving hole 22 (i.e., another handle 3) in this embodiment is set in the same way.

[0046] In some other optional embodiments, the positional relationship between the first assembly hole 13 and the second assembly hole 14 (or the third assembly hole 23 and the fourth assembly hole 24) may not be parallel to the width direction of the first substrate 1 (or the second substrate 2), and may be parallel to the length direction thereof, or be inclined at a certain angle to the width direction and the length direction.

[0047] In some other optional embodiments, the relative positions of the two handles 3 on the first substrate 1 and the second substrate 2 may be symmetrical or asymmetrical, which is not specifically limited herein.

[0048] In some other optional embodiments, the number of the handles 3 can be one, three, four, etc., and the number of the handles 3 on the first substrate 1 and the second substrate 2 can be the same or different. One of the substrates may not have a handle 3.

[0049] In some embodiments, the first substrate 1 and the second substrate 2 can adjust the size of the overlapping area by relative sliding, and the two can be connected to each other by relative sliding, and the moving component 5 is respectively arranged on the first substrate 1 and the second substrate 2.

[0050] For example Figure 1 As shown, in some embodiments, the moving component 5 includes at least one insulating bolt, at least one fixing hole is formed on one of the first substrate 1 and the second substrate 2, and at least one moving hole is formed on the other of the first substrate 1 and the second substrate 2, and the moving hole is longitudinally arranged and corresponds to the at least one fixing hole. The number of the insulating bolts corresponds to the number of the fixing holes, and the sizes of the two correspond. The insulating bolts are respectively inserted into the fixing holes and the moving holes, and the positions in the moving holes are adjustable. The insulating bolts are adjusted in their positions in the moving holes, so that their positions on one of the substrates are adjusted, thereby making the positions between the two substrates adjustable.

[0051] In some other optional embodiments, the moving component 5 can also be configured as a slide rail structure, and the positions of the first substrate 1 and the second substrate 2 can be adjusted by disposing the slide rail structure between the first substrate 1 and the second substrate 2 .

[0052] In some other optional embodiments, the size of the overlapping area of ​​the first substrate 1 and the second substrate 2 can be adjusted without sliding. The size of the overlapping area of ​​the first substrate 1 and the second substrate 2 can be adjusted by providing a limiting protrusion on one of the first substrate 1 or the second substrate 2, and providing a plurality of limiting grooves on the other, and placing the limiting protrusion in different limiting grooves.

[0053] Read also Figure 2 and Figure 3 In this embodiment, the number of the insulating bolts and the fixing holes are four, and the number of the movable holes is two, and each movable hole corresponds to two fixing holes and two insulating bolts. The four fixing holes are formed on the first substrate 1, namely the first fixing hole 15, the second fixing hole 16, the third fixing hole 17 and the fourth fixing hole 18. The two movable holes are formed on the second substrate 2, namely the first movable hole 25 and the second movable hole 26. The first movable hole 25 corresponds to the positions of the first fixing hole 15 and the second fixing hole 16, respectively, and the second movable hole 26 corresponds to the positions of the third fixing hole 17 and the fourth fixing hole 18, respectively.

[0054] Specifically, the first movable hole 25 and the second movable hole 26 are formed at one end of the second substrate 2 away from the third accommodating hole 21, the fourth accommodating hole 22, the third assembly hole 23 and the fourth assembly hole 24, so as to be close to the first substrate 1 and movably connected thereto through the movable holes. The first movable hole 25 and the second movable hole 26 are arranged in parallel and spaced apart, and the extension directions of both are parallel to the overlapping sides of the first substrate 1 and the second substrate 2 (i.e., the length direction of the first substrate 1 and the second substrate 2), so as to realize the relative movement of the first substrate 1 and the second substrate 2 along the length direction of both. And the arrangement direction of the first movable hole 25 and the second movable hole 26 is parallel to the width direction of the second substrate 2, so that the connection line of the four corresponding fixing holes is arranged in a rectangular shape, thereby improving the stability of the connection between the first substrate 1 and the second substrate 2.

[0055] In some other optional embodiments, the arrangement direction of the first movable hole 25 and the second movable hole 26 on the second substrate 2 may not be parallel to the width direction of the second substrate 2, as long as the two are not in the same width direction position on the second substrate 2 (that is, the extension lines do not overlap).

[0056] In some other optional embodiments, the movable hole may also be formed on the first substrate 1, and the fixed hole may be formed on the second substrate 2. It should be understood that no matter whether the movable hole (or fixed hole) is set on the first substrate 1 or the second substrate 2, during the connection process, the first substrate 1 and the second substrate 2 may be located at the front side of the other (the "front side" here refers to the side close to the operator), and no specific limitation is made here.

[0057] In some other optional embodiments, the number of the movable holes can also be set to one, three or more, and the same movable hole can also correspond to one, three or more fixed holes. When the number of movable holes is two or more, the number of fixed holes corresponding to each movable hole can be the same or different. It is also possible not to set a longitudinal movable hole, and by setting a plurality of evenly spaced and compactly arranged fixed holes, by selectively inserting insulating bolts in different fixing holes, the position of the insulating bolts on the substrate can be moved, and the relative movement between the first substrate 1 and the second substrate 2 can also be achieved. At this time, the number of fixed holes on the other substrate can be flexibly set, such as setting it to the same number as the evenly spaced and compactly arranged fixed holes, or only setting one, two, three, etc.

[0058] It should be understood that the sizes of the first accommodating hole 11, the second accommodating hole 12, the third accommodating hole 21, and the fourth accommodating hole 22 need to be flexibly set according to the size of the magnetic suction component 4. The sizes of the first assembly hole 13, the second assembly hole 14, the third assembly hole 23, and the fourth assembly hole 24 need to be flexibly set according to the size of the handle 3. The sizes of the first fixing hole 15, the second fixing hole 16, the third fixing hole 17, and the fourth fixing hole 18 need to be flexibly set according to the size of the insulating bolt. The sizes of the first substrate 1 and the second substrate 2 need to be large enough to sufficiently ensure the coverage of the valve and ensure the insulation isolation effect. The sizes of the first movable hole 25 and the second movable hole 26 need to be flexibly set according to the sizes of the first substrate 1 and the second substrate 2.

[0059] The following will be further described by a specific embodiment:

[0060] The length of the first substrate 1 and the second substrate 2 are both 550mm, and the width is both 450mm. The apertures of the first accommodating hole 11, the second accommodating hole 12, the third accommodating hole 21, and the fourth accommodating hole 22 are all 4mm. The apertures of the first assembly hole 13, the second assembly hole 14, the third assembly hole 23, and the fourth assembly hole 24 are all 4mm. The apertures of the first fixing hole 15, the second fixing hole 16, the third fixing hole 17, and the fourth fixing hole 18 are all 8mm. The length of the first movable hole 25 and the second movable hole 26 are 250mm, the width is 8mm, and both ends are provided with fillets with a radius of 4mm.

[0061] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A 10KV switchboard valve insulation isolation device for a nuclear power plant, characterized in that: include: A first substrate (1) and a second substrate (2) having insulating properties, wherein the first substrate (1) and the second substrate (2) are connected to each other in a relatively movable manner to form an insulating plate for isolating the valve, and the first substrate (1) and the second substrate (2) at least partially overlap each other; At least one magnetic attraction component (4) for detachably adsorbing the first substrate (1) and the second substrate (2) onto the metal plate at the valve position, the magnetic attraction component (4) being arranged on the first substrate (1) and / or the second substrate (2); as well as A movable component (5) is used to adjust the size of the overlapping area of ​​the first substrate (1) and the second substrate (2); the movable component (5) is connected to the first substrate (1) and the second substrate (2) respectively.

2. The 10KV switchboard valve insulation isolation device for a nuclear power plant according to claim 1, characterized in that: At least one accommodating hole for accommodating the magnetic attraction component (4) is formed on the first substrate (1) and / or the second substrate (2), and the magnetic attraction component (4) is fixed in the accommodating hole.

3. The 10KV switchboard valve insulation isolation device for a nuclear power plant according to claim 2 is characterized in that: The number of the magnetic attraction members (4) is four, and two accommodating holes are formed at intervals on the first substrate (1) and the second substrate (2), and are respectively formed on the non-overlapping portions of the first substrate (1) and the second substrate (2).

4. The 10KV switchboard valve insulation isolation device for a nuclear power plant according to claim 1, characterized in that: It also comprises at least one handle (3) fixed on a side of the first base plate (1) and / or the second base plate (2) away from the valve position metal plate.

5. The 10KV switchboard valve insulation isolation device for a nuclear power plant according to claim 4, characterized in that: The number of the handles (3) is two, which are respectively fixed to the first substrate (1) and the second substrate (2), and are respectively fixed to the non-overlapping portions of the first substrate (1) and the second substrate (2).

6. The 10KV switchboard valve insulation isolation device for a nuclear power plant according to claim 5, characterized in that: The number of the magnetic attraction members (4) is four, and two accommodating holes are formed at intervals on the first substrate (1) and the second substrate (2), and are respectively formed on the non-overlapping portions of the first substrate (1) and the second substrate (2); The handle (3) on the first substrate (1) and the second substrate (2) are both arranged between the two accommodating holes.

7. The 10KV switchboard valve insulation isolation device for a nuclear power plant according to claim 1, characterized in that: The first substrate (1) and the second substrate (2) are connected in a relatively slidable manner, and the moving component (5) is respectively arranged on the first substrate (1) and the second substrate (2).

8. The 10KV switchboard valve insulation isolation device for a nuclear power plant according to claim 7, characterized in that: The movable component (5) includes at least one insulating bolt. At least one fixing hole is formed on one of the first substrate (1) and the second substrate (2), and at least one movable hole is formed on the other of the substrates. The movable holes are arranged in a longitudinal direction and correspond to at least one of the fixing holes. The insulating bolts are respectively inserted into the movable holes and the fixing holes, and their positions in the movable holes are adjustable.

9. The 10KV switchboard valve insulation isolation device for a nuclear power plant according to claim 8, characterized in that: The first substrate (1) and the second substrate (2) are both rectangular, and their widths and / or lengths are equal so that the insulating plate formed by the partial overlapping connection of the two substrates is rectangular, and the extension direction of the movable hole is parallel to the overlapping sides of the first substrate (1) and the second substrate (2).

10. The 10KV switchboard valve insulation isolation device for a nuclear power plant according to claim 8, characterized in that: The number of the fixed holes is at least two, and each of the movable holes corresponds to two fixed holes; And / or, the number of the movable holes is two, and the two movable holes are arranged in parallel and spaced apart.

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