Explosion-proof insulating partition plate and transformer

Abstract

The explosion-proof insulating partition plate comprises a partition plate body, the partition plate body comprises a plurality of plates stacked in the thickness direction, each plate comprises a first surface and a second surface which are opposite to each other in the thickness direction, and the first surfaces of the plates all face the same side; a plurality of first elastic units are arranged on each first surface located between every two adjacent plates in a protruding mode, a plurality of second elastic units are arranged on each second surface located between every two adjacent plates in a protruding mode, and the first elastic units and the second elastic units located between every two adjacent plates are arranged in a staggered mode. The first elastic units located between every two adjacent plates make contact with the multiple adjacent second elastic units, and each first elastic unit and each second elastic unit are each provided with a buffer cavity with an opening facing away from the corresponding plate. The explosion-proof insulating partition plate can effectively block shock waves when the on-load tap-changer is subjected to internal fault explosion.

Description

Technical Field

[0001] The present application relates to the technical field of electric power equipment, and in particular to an explosion-proof insulating partition and a transformer. Background Art

[0002] In the modern complex and huge power system, converter transformers and on-load tap changers are crucial components. The two cooperate and work together to ensure efficient conversion and stable transmission of electricity. However, in the actual operation of the power system, arc faults may occur inside the on-load tap changer due to a variety of complex reasons. These arcs release huge energy in an instant, forming an explosion shock. This requires the installation of an insulating partition between the converter transformer and the on-load tap changer to play a role in isolation, insulation and explosion prevention.

[0003] However, current insulating partitions have certain limitations when dealing with high-energy arc shocks, which means that the shock waves generated by the explosion can easily damage key components such as the internal windings of the converter transformer, seriously affecting the safe and stable operation of the power system. Summary of the invention

[0004] Based on this, it is necessary to provide an explosion-proof insulating partition and transformer to address the problem that when an internal fault explosion occurs in an on-load tap changer, the shock wave generated by the explosion can easily cause damage to key components such as the internal windings of the converter transformer.

[0005] The technical solution is as follows:

[0006] In a first aspect, the present application provides an explosion-proof insulating partition, comprising:

[0007] A partition body, wherein the partition body includes a plurality of plates stacked along a thickness direction, each of the plates includes a first surface and a second surface opposite to each other in the thickness direction, and the first surfaces of the plurality of plates face the same side; each first surface between two adjacent plates is convexly provided with a plurality of first elastic units, and each second surface between two adjacent plates is convexly provided with a plurality of second elastic units, the plurality of first elastic units and the plurality of second elastic units between two adjacent plates are staggered, and the first elastic unit between two adjacent plates is in contact with the plurality of adjacent second elastic units, and each of the first elastic unit and each of the second elastic units is provided with a buffer cavity opening facing away from the corresponding plate.

[0008] In the above-mentioned explosion-proof insulating partition, the partition body includes a plurality of stacked plates, a plurality of first elastic units are provided on the first surface between two adjacent plates, and a plurality of second elastic units are provided on the second surface, each first elastic unit and each second elastic unit are provided with a buffer cavity with an opening facing away from the corresponding plate, and the plurality of first elastic units and the plurality of second elastic units between the two adjacent plates are staggered, and the first elastic unit can contact the plurality of adjacent second elastic units, which makes the plurality of first elastic units and the plurality of second elastic units located between the two adjacent plates able to be staggered, contact and nested, so that when the partition body is subjected to external impact force, the plurality of elastic units located between the two adjacent plates can not only provide more uniform and stronger mechanical support in different directions to better disperse the impact force and prevent deformation or damage of the plate caused by local stress concentration; but also can utilize the deformation of the side wall of the buffer cavity of the elastic unit to absorb energy, and utilize the sequential deformation of the plurality of elastic units that are staggered and in contact during the impact process to form a complex energy absorption path, so that the impact energy can be repeatedly reflected and refracted between adjacent plates, increase the interaction between the impact energy and the elastic unit, and improve the energy absorption efficiency. Therefore, when the explosion-proof insulating partition is arranged between the converter transformer and the on-load tap changer, and the explosion shock generated by the internal fault of the on-load tap changer is transmitted from one side of the on-load tap changer to the explosion-proof insulating partition, the buffer cavity in the partition body will be impacted by external force, so that the side wall of the buffer cavity can be gradually deformed, so that the multiple first elastic units and multiple second elastic units that are staggered and contacted between two adjacent plates can be deformed in sequence to effectively absorb and dissipate energy, thereby converting the explosion shock energy into the internal energy of the elastic unit, so that the impact force transmitted to the converter transformer side is greatly reduced, thereby achieving the effect of reducing the impact pressure and protecting the key components such as the internal winding of the converter transformer. Therefore, the explosion-proof insulating partition can effectively prevent the shock wave generated by the explosion from causing damage to the key components such as the internal winding of the converter transformer when the internal fault explosion of the on-load tap changer occurs, thereby ensuring the safe and stable operation of the power system.

[0009] The technical solution is further described below:

[0010] In one embodiment, the plurality of first elastic units on the first surface are arranged at intervals along the first direction to form a first elastic column, the plurality of first elastic columns are arranged along the second direction, the first elastic units in two adjacent first elastic columns are staggered, the plurality of second elastic units on the second surface are arranged at intervals along the first direction to form a second elastic column, the plurality of second elastic columns are arranged along the second direction, the second elastic units in two adjacent second elastic columns are staggered, the plurality of first elastic columns located between two adjacent plates correspond one-to-one to the plurality of second elastic columns, and the plurality of first elastic units in the first elastic column are staggered with the plurality of second elastic units in the corresponding second elastic column, wherein the first direction is perpendicular to the second direction.

[0011] In one embodiment, the first elastic unit, the second elastic unit and the buffer cavity are all hexagonal;

[0012] And / or, each of the first surfaces of the plates is protrudingly provided with the multiple first elastic units, and each of the second surfaces of the plates is protrudingly provided with the multiple second elastic units, and in the thickness direction, the multiple first elastic units and the multiple second elastic units on the plates are staggered.

[0013] In one embodiment, the cross-sectional area of ​​the first elastic unit and the cross-sectional area of ​​the second elastic unit both gradually decrease from one end close to the corresponding plate to the other end;

[0014] And / or, the number of the plates is two.

[0015] In one of the embodiments, the material of the partition body includes aramid fiber reinforced composite material.

[0016] In one of the embodiments, the explosion-proof insulating partition comprises an insulating shielding frame, and the insulating shielding frame is arranged on a side of the partition body opposite to the on-load tap changer.

[0017] In one of the embodiments, a through-hole for installation is provided on the partition body, and the explosion-proof insulating partition includes a wiring terminal, and the wiring terminal is installed in the through-hole for installation.

[0018] In one of the embodiments, the explosion-proof insulating partition includes an elastic washer, which is arranged on a side of the partition body opposite to the on-load tap changer and sleeved on the outer periphery of the connection terminal.

[0019] In one of the embodiments, the explosion-proof insulating partition includes a shock-absorbing pad, which is arranged on a side of the elastic gasket away from the partition body and is sleeved on the outer periphery of the terminal.

[0020] In a second aspect, the present application provides a transformer comprising any of the above-mentioned explosion-proof insulating partitions.

[0021] In the above transformer, the partition body includes a plurality of stacked plates, a plurality of first elastic units are provided on the first surface between two adjacent plates, and a plurality of second elastic units are provided on the second surface, each first elastic unit and each second elastic unit are provided with a buffer cavity with an opening facing away from the corresponding plate, and the plurality of first elastic units and the plurality of second elastic units between the two adjacent plates are staggered, and the first elastic unit can contact with the plurality of second elastic units, which makes the plurality of first elastic units and the plurality of second elastic units located between the two adjacent plates staggered, contact and nest. Therefore, when the explosion-proof insulating partition is arranged between the converter transformer and the on-load tap changer When the explosion shock caused by the internal fault of the on-load tapchanger is transmitted from one side of the on-load tapchanger to the explosion-proof insulating partition, the buffer cavity in the partition body will be impacted by external force, so that the side wall of the buffer cavity can be gradually deformed, so that the multiple first elastic units and the multiple second elastic units that are staggered and in contact between the two adjacent plates can be deformed in sequence to effectively absorb and dissipate energy, thereby converting the explosion shock energy into the internal energy of the elastic unit, so that the impact force transmitted to the converter transformer side is greatly reduced, thereby achieving the effect of reducing the impact pressure and protecting key components such as the internal windings of the converter transformer, thereby ensuring the safe and stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the front view structure of an explosion-proof insulating partition in one embodiment.

[0023] Figure 2 It is a schematic diagram of the side structure of an explosion-proof insulating partition in one embodiment.

[0024] Figure 3 It is a schematic structural diagram of the first surface of a plate in one embodiment.

[0025] Figure 4 FIG. 1 is a schematic diagram of the projection structure of the first elastic unit and the second elastic unit between two adjacent plates on the first surface in one embodiment.

[0026] Description of reference numerals:

[0027] 100. explosion-proof insulating partition; 1. partition body; 10. plate material; 11. first surface; 111. first elastic unit; 112. first elastic column; 121. second elastic unit; 122. second elastic column; 1a. mounting through hole; 2. insulating shielding frame; 3. wiring terminal; 4. elastic gasket; 5. shock-absorbing pad; S1. first direction; S2. second direction. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0030] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0032] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0034] See also Figures 1 to 4 An explosion-proof insulating partition 100 provided in one embodiment of the present application includes a partition body 1, and the partition body 1 includes a plurality of plates 10 stacked along the thickness direction, each plate 10 includes a first surface 11 and a second surface opposite to each other in the thickness direction, and the first surfaces 11 of the plurality of plates 10 are all facing the same side; each first surface 11 between two adjacent plates 10 is convexly provided with a plurality of first elastic units 111, and each second surface between two adjacent plates 10 is convexly provided with a plurality of second elastic units 121, and the plurality of first elastic units 111 and the plurality of second elastic units 121 between two adjacent plates 10 are staggered, and the first elastic unit 111 between two adjacent plates 10 is in contact with the plurality of adjacent second elastic units 121, and each first elastic unit 111 and each second elastic unit 121 are provided with a buffer cavity with an opening facing away from the corresponding plate 10.

[0035] In the above-mentioned explosion-proof insulating partition 100, the partition body 1 includes a plurality of stacked plates 10, a plurality of first elastic units 111 are provided on the first surface 11 between two adjacent plates 10, and a plurality of second elastic units 121 are provided on the second surface, each first elastic unit 111 and each second elastic unit 121 are provided with a buffer cavity with an opening facing away from the corresponding plate 10, and the plurality of first elastic units 111 and the plurality of second elastic units 121 between the two adjacent plates 10 are staggered, and the first elastic unit 111 can contact the plurality of adjacent second elastic units 121, which makes the plurality of first elastic units 111 and the plurality of second elastic units 121 located between the two adjacent plates 10 contact each other. The second elastic unit 121 can be nested in a staggered contact manner, so that when the partition body 1 is subjected to an external impact force, the multiple elastic units located between two adjacent plates 10 can not only provide more uniform and stronger mechanical support in different directions to better disperse the impact force and prevent deformation or damage of the plate 10 caused by local stress concentration; it can also utilize the deformation of the side walls of the buffer cavity of the elastic unit to absorb energy, and utilize the sequential deformation of the multiple elastic units that are staggered and in contact during the impact process to form a complex energy absorption path, so that the impact energy can be repeatedly reflected and refracted between adjacent plates 10, thereby increasing the interaction between the impact energy and the elastic unit and improving the energy absorption efficiency. Therefore, when the explosion-proof insulating partition 100 is arranged between the converter transformer and the on-load tap changer, and the explosion shock generated by the internal fault of the on-load tap changer is transmitted from one side of the on-load tap changer to the explosion-proof insulating partition 100, the buffer cavity in the partition body 1 will be impacted by external force, so that the side wall of the buffer cavity can be gradually deformed, so that the multiple first elastic units 111 and multiple second elastic units 121 located between two adjacent plates 10 that are staggered and in contact can be deformed in sequence to effectively absorb and dissipate energy, thereby converting the explosion shock energy into the internal energy of the elastic unit, so that the impact force transmitted to the converter transformer side is greatly reduced, thereby achieving the effect of reducing the impact pressure and protecting the key components such as the internal winding of the converter transformer. Therefore, the explosion-proof insulating partition 100 can effectively prevent the shock wave generated by the explosion from damaging the key components such as the internal winding of the converter transformer when the internal fault explosion of the on-load tap changer occurs, thereby ensuring the safe and stable operation of the power system.

[0036] In addition, since the first elastic unit 111 and the second elastic unit 121 between two adjacent plates 10 are staggered, and the first elastic unit 111 is in contact with multiple adjacent second elastic units 121, the two adjacent plates 10 can be connected and fixed in this close contact manner, so that no additional complicated processes are required to fix the plates 10, which is beneficial to improving production efficiency.

[0037] Before installing the explosion-proof insulating partition 100, it is necessary to clean the connection parts of the converter transformer and the on-load tap changer to ensure that there are no debris, oil stains, or other substances that affect the installation on the surface. At the same time, check the size and shape of the connection parts to ensure that they match the installation size of the partition. When installing the explosion-proof insulating partition 100, place the explosion-proof insulating partition 100 in the connection area between the converter transformer and the on-load tap changer to ensure that the position is accurate and fits tightly with the equipment on both sides before fixing it. During the fixing process, pay attention to the tightening torque of the connector to avoid affecting the installation stability and protective performance of the partition due to over-tightening or over-loosening. After the installation is completed, check the installation of the partition again to ensure that it is firm and reliable.

[0038] In one embodiment, Figure 3 and Figure 4 As shown, a plurality of first elastic units 111 of the first surface 11 are arranged at intervals along the first direction S1 to form a first elastic column 112, a plurality of first elastic columns 112 are arranged along the second direction S2, the first elastic units 111 in two adjacent first elastic columns 112 are arranged in a staggered manner, a plurality of second elastic units 121 of the second surface are arranged at intervals along the first direction S1 to form a second elastic column 122, a plurality of second elastic columns 122 are arranged along the second direction S2, the second elastic units 121 in two adjacent second elastic columns 122 are arranged in a staggered manner, a plurality of first elastic columns 112 located between two adjacent plates 10 correspond one-to-one to a plurality of second elastic columns 122, and a plurality of first elastic units 111 in the first elastic column 112 are staggered with a plurality of second elastic units 121 in the corresponding second elastic column 122, wherein the first direction S1 is perpendicular to the second direction S2. In this way, the multiple first elastic units 111 on the first surface 11 and the multiple second elastic units 121 on the second surface are arranged in an array, which is conducive to the production and manufacture of the plate 10, and is also conducive to conveniently stacking multiple plates to form the partition body 1.

[0039] In other embodiments, the multiple first elastic units 111 on the first surface 11 are arranged at intervals, and between two adjacent plates 10, the multiple second elastic units 121 on the second surface are arranged around the periphery of a first elastic unit 111, that is, the first elastic unit 111 is embedded in the middle position of the multiple second elastic units 121.

[0040] Illustratively, the shapes of the first elastic unit 111 , the second elastic unit 121 and the buffer cavity can be designed as required, for example, hexagonal, circular or diamond-shaped.

[0041] In one embodiment, Figure 3 and Figure 4As shown, the first elastic unit, the second elastic unit and the buffer cavity are all hexagonal. In this way, a higher space filling efficiency can be achieved, so that multiple elastic units can be arranged more closely in the space between two adjacent plates 10 to form a denser buffer layer. In addition, the structural characteristics of the hexagon can make the contact surface between a certain elastic unit and the adjacent elastic unit relatively large, so that multi-directional mutual support can be formed between adjacent elastic units, so that when the partition body 1 is subjected to impact force, the force can be more evenly dispersed to the adjacent elastic units along the edges of the hexagon, forming a stable mechanical support network, which effectively absorbs and dissipates shock waves while preventing deformation or damage to the plate 10 caused by local stress concentration.

[0042] Furthermore, if Figure 3 and Figure 4 As shown, the first elastic unit, the second elastic unit and the buffer cavity are all hexagonal, and the first elastic unit 111 in the first elastic column 112 between two adjacent plates 10 is arranged in abutment with the adjacent second elastic unit 121 in the corresponding second elastic column 122, and the first elastic unit 111 in the first elastic column 112 between two adjacent plates 10 is in contact with the adjacent second elastic unit 121 in the adjacent second elastic column 122. In this way, one side wall of the first elastic unit 111 located in the same column can be closely fitted with one side wall of the adjacent second elastic unit 121 to form a double wall thickness, so that when an internal fault of the on-load tap changer generates an explosion shock, the composite double-walled elastic unit located between the two adjacent plates 10 can better transmit the impact force, so as to utilize its own deformation to absorb the shock, thereby effectively preventing the shock wave generated by the explosion from causing damage to the key components such as the internal winding of the converter transformer, and ensuring the safe and stable operation of the power system. Schematically, both the first elastic unit 111 and the second elastic unit 121 can be formed by mold forming technology.

[0043] Optionally, in one embodiment, a plurality of first elastic units 111 are convexly provided on the first surface 11 of each plate 10, and a plurality of second elastic units 121 are convexly provided on the second surface of each plate 10, and in the thickness direction, the plurality of first elastic units 111 and the plurality of second elastic units 121 on the plate 10 are arranged in a staggered manner. In this way, more elastic units can be arranged on the partition body 1, so that when the shock wave enters the partition, the partition body 1 can further absorb and dissipate the impact energy, so as to further reduce the impact force transmitted to the converter transformer side.

[0044] Optionally, in one embodiment, the cross-sectional area of ​​the first elastic unit 111 and the cross-sectional area of ​​the second elastic unit 121 are gradually reduced from one end close to the corresponding plate 10 to the other end. In this way, the first elastic unit 111 and the second elastic unit 121 are both tapered structures, which makes it possible for the first elastic unit 111 and the second elastic unit 121 located between two adjacent plates 10 to be smoothly inserted into the corresponding positions under the guidance of their structures when the plates 10 are stacked, thereby ensuring the production efficiency of the partition body 1.

[0045] Optionally, in one embodiment, the number of the plates 10 is two. In other embodiments, the number of the plates 10 may also be three, four, five or more.

[0046] Optionally, in one embodiment, the material of the partition body 1 includes aramid fiber reinforced composite material. Since the aramid fiber reinforced composite material has high strength and impact resistance, when the partition body 1 is made of aramid fiber reinforced composite material, it can ensure that the partition body 1 will not be easily damaged, maintain the barrier function of the explosion-proof insulating partition 100, and reduce the risk of paralysis of the entire commutation system due to local failure.

[0047] Schematically, the aramid fiber reinforced composite material can be formed using high-quality aramid fiber as a reinforcing material and epoxy resin as a matrix material. Aramid fiber not only has good compatibility with epoxy resin and can form a composite material with excellent mechanical properties, but also has excellent properties such as high strength, high modulus, high temperature resistance, and chemical corrosion resistance. Therefore, the partition body 1 made of aramid fiber can withstand the huge impact force generated by the internal explosion of the on-load tap changer, and ensure the structural integrity of the partition body 1 in extreme cases. In the process of preparing aramid fiber reinforced composite materials, a series of steps such as fiber weaving, impregnation, and curing are used to make the aramid fiber evenly distributed in the matrix material to form an aramid fiber reinforced composite material.

[0048] In one embodiment, Figure 1 and Figure 2 As shown, the explosion-proof insulating partition 100 includes an insulating shielding frame 2, which is arranged in the partition body 1 on a side opposite to the on-load tap changer. In this way, the high-voltage and low-voltage parts can be effectively isolated, the risk of electrical faults can be reduced, and the safe operation of the power system can be guaranteed.

[0049] Optionally, in one embodiment, Figure 1 As shown, the insulating shielding frame 2 is a rectangular structure. In this way, the insulating shielding frame 2 can be better arranged around the edge of the board partition body 1 to ensure the safe operation of the power system. In other embodiments, the insulating shielding frame 2 can also be other shapes, such as a circle.

[0050] In one embodiment, Figure 1 and Figure 2 As shown, a through-hole 1a is provided on the partition body 1, and the explosion-proof insulating partition 100 includes a terminal 3, which is installed in the through-hole 1a. In this way, when the partition body 1 is arranged between the converter transformer and the on-load tap changer, the terminal of the converter transformer can be connected with the terminal of the on-load tap changer through the terminal 3, so as to ensure that the converter transformer and the on-load tap changer can be effectively electrically connected, thereby ensuring the safe operation of the power system.

[0051] Optionally, in one embodiment, Figure 2 As shown, the explosion-proof insulating partition 100 includes an elastic washer 4, which is arranged on the side of the partition body 1 opposite to the on-load tap changer and sleeved on the outer periphery of the terminal 3. In this way, when the terminal 3 is connected to the terminal of the on-load tap changer through a connecting piece, such as a bolt, the connecting piece can reduce the vibration between the connecting piece and the partition body 1 through the elastic washer 4, so as to reduce the transmission efficiency of the vibration between the converter transformer and the on-load tap changer. At the same time, the elastic washer 4 can also effectively absorb and dissipate the vibration energy transmitted by the connecting piece, avoid the vibration from being directly transmitted through the connecting piece, and thus reduce the loosening of the connection parts caused by vibration.

[0052] Illustratively, the elastic washer 4 may abut against the opening edge of the mounting through hole 1 a , so that the elastic washer 4 can effectively absorb and offset the vibration transmitted through the connecting member.

[0053] Further, optionally, in one embodiment, as Figure 2 As shown, the explosion-proof insulating partition 100 includes a shock-absorbing pad 5, which is arranged on the side of the elastic washer 4 away from the partition body 1 and is sleeved on the outer periphery of the terminal 3. In this way, the shock-absorbing pad 5 can absorb and dissipate vibration energy together with the elastic washer 4 at the connection of the terminal 3 to avoid the vibration being directly transmitted through the wiring piece, thereby reducing the loosening of the connection parts caused by vibration and ensuring the stability of the power system. At the same time, it also further reduces the transmission efficiency of vibration between the converter transformer and the on-load tap changer to ensure the safety of the converter transformer.

[0054] Schematically, the shock-absorbing pad 5 is a rubber shock-absorbing pad 5, so that the shock-absorbing pad 5 has the characteristics of high elasticity and high viscosity, which enables it to effectively absorb and disperse external vibration and impact force, thereby reducing the transmission efficiency of vibration between the converter transformer and the on-load tap changer.

[0055] The present application also provides a transformer, comprising the explosion-proof insulating partition 100 in any of the above embodiments.

[0056] In the above-mentioned transformer, the partition body 1 includes a plurality of stacked plates 10, a first surface 11 between two adjacent plates 10 is provided with a plurality of first elastic units 111, and a second surface is provided with a plurality of second elastic units 121, each first elastic unit 111 and each second elastic unit 121 are provided with a buffer cavity opening away from the corresponding plate 10, and the plurality of first elastic units 111 and the plurality of second elastic units 121 between two adjacent plates 10 are staggered, and the first elastic unit 111 can contact with the plurality of second elastic units 121, which makes the plurality of first elastic units 111 and the plurality of second elastic units 121 located between two adjacent plates 10 can be staggered, contact and nested, therefore, when the explosion-proof insulating partition 1 00 is arranged between the converter transformer and the on-load tap changer, and when the explosion shock caused by the internal fault of the on-load tap changer is transmitted from one side of the on-load tap changer to the explosion-proof insulating partition 100, the buffer cavity in the partition body 1 will be impacted by external force, so that the side wall of the buffer cavity can be gradually deformed, so that the multiple first elastic units 111 and the multiple second elastic units 121 that are staggered and in contact between the two adjacent plates 10 can be deformed in sequence to effectively absorb and dissipate energy, thereby converting the explosion impact energy into the internal energy of the elastic unit, so that the impact force transmitted to the converter transformer side is greatly reduced, thereby achieving the effect of reducing the impact pressure and protecting key components such as the internal winding of the converter transformer, thereby ensuring the safe and stable operation of the power system.

[0057] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An explosion-proof insulating partition, characterized in that: include: A partition body, wherein the partition body includes a plurality of plates stacked along a thickness direction, each of the plates includes a first surface and a second surface opposite to each other in the thickness direction, and the first surfaces of the plurality of plates face the same side; each first surface between two adjacent plates is convexly provided with a plurality of first elastic units, and each second surface between two adjacent plates is convexly provided with a plurality of second elastic units, the plurality of first elastic units and the plurality of second elastic units between two adjacent plates are staggered, and the first elastic unit between two adjacent plates is in contact with the plurality of adjacent second elastic units, and each of the first elastic unit and each of the second elastic units is provided with a buffer cavity opening facing away from the corresponding plate.

2. The explosion-proof insulating partition according to claim 1, characterized in that: The plurality of first elastic units on the first surface are arranged at intervals along the first direction to form a first elastic column, the plurality of first elastic columns are arranged along the second direction, the first elastic units in two adjacent first elastic columns are arranged in a staggered manner, the plurality of second elastic units on the second surface are arranged at intervals along the first direction to form a second elastic column, the plurality of second elastic columns are arranged along the second direction, the second elastic units in two adjacent second elastic columns are arranged in a staggered manner, the plurality of first elastic columns located between two adjacent plates correspond one-to-one to the plurality of second elastic columns, and the plurality of first elastic units in the first elastic column are staggered with the plurality of second elastic units in the corresponding second elastic column, wherein the first direction is perpendicular to the second direction.

3. The explosion-proof insulating partition according to claim 1 or 2, characterized in that: The first elastic unit, the second elastic unit and the buffer cavity are all hexagonal; And / or, each of the first surfaces of the plates is protrudingly provided with the multiple first elastic units, and each of the second surfaces of the plates is protrudingly provided with the multiple second elastic units, and in the thickness direction, the multiple first elastic units and the multiple second elastic units on the plates are staggered.

4. The explosion-proof insulating partition according to claim 1 or 2, characterized in that: The cross-sectional area of ​​the first elastic unit and the cross-sectional area of ​​the second elastic unit both gradually decrease from one end close to the corresponding plate to the other end; And / or, the number of the plates is two.

5. The explosion-proof insulating partition according to claim 1, characterized in that: The material of the partition body includes aramid fiber reinforced composite material.

6. The explosion-proof insulating partition according to claim 1, characterized in that: The explosion-proof insulating partition comprises an insulating shielding frame, which is arranged on a side of the partition body opposite to the on-load tap changer.

7. The explosion-proof insulating partition according to claim 1, characterized in that: A through-hole for installation is provided on the partition body, and the explosion-proof insulating partition comprises a wiring terminal, which is installed in the through-hole for installation.

8. The explosion-proof insulating partition according to claim 7, characterized in that: The explosion-proof insulating partition includes an elastic washer, which is arranged on a side of the partition body opposite to the on-load tap changer and sleeved on the outer periphery of the connection terminal.

9. The explosion-proof insulating partition according to claim 8, characterized in that: The explosion-proof insulating partition includes a shock-absorbing pad, which is arranged on a side of the elastic washer away from the partition body and is sleeved on the outer periphery of the wiring terminal.

10. A transformer, characterized in that: The invention comprises the explosion-proof insulating partition as described in any one of claims 1 to 9.

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