Post insulator device and inflation switch cabinet system

Abstract

The utility model discloses a post insulator device and an inflatable switch cabinet system, the device comprises a reinforcing rib and an insulator body, the reinforcing rib is installed on the inner wall of a box shell of an inflatable switch cabinet, the reinforcing rib is provided with an installation part, an interval space exists between the installation part and the inner wall of the box shell, and the insulator body comprises a main body part and a cushion block part. The main body part extends in the preset direction, the preset direction is perpendicular to the plane where the inner wall of the box shell is located, one end of the main body part is connected with the cushion block part, the other end of the main body part is provided with an insert, the cushion block part and the installation part of the reinforcing rib are connected in a pressed mode through a connecting piece, and the connecting piece sequentially penetrates through the cushion block part and the installation part and is partially contained in the interval space. And the insert is used for inserting a contact or a copper bar. The post insulator device can be installed in the inflatable switch cabinet, and the sealing performance of the box shell is prevented from being damaged.

Description

Technical Field

[0001] The utility model specifically relates to a post insulator device and an inflatable switch cabinet system comprising the device. Background Art

[0002] With the development of the electric power industry, switchgear is increasingly used, and the application of support insulators used to insulate and support contacts is also increasing, and the types are also diversified. Gas-filled switchgear is an important type of switchgear. The box shell of the gas-filled switchgear is welded and needs to be filled with insulating gas. Therefore, the sealing performance of the gas-filled switchgear is particularly important.

[0003] In a gas-filled switchgear, the post insulator usually needs to be installed on the inner wall of the box shell, which requires that the side wall of the box shell be provided with a mounting hole. However, this will result in a decrease in the sealing performance of the gas-filled switchgear, and the insulating gas is prone to leak from the gap of the mounting hole. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a post insulator device and a gas-filled switch cabinet system in view of the above-mentioned deficiencies in the prior art. The post insulator device can be installed in the gas-filled switch cabinet and avoids damaging the sealing of the box shell.

[0005] According to an embodiment of the first aspect of the utility model, there is provided a post insulator device, comprising: a reinforcing rib and an insulator body, wherein the reinforcing rib is installed on the inner wall of the box shell of the inflatable switch cabinet, the reinforcing rib is provided with a mounting portion, and there is a spacing space between the mounting portion and the inner wall of the box shell, the insulator body comprises a main body portion and a pad portion, the main body portion extends along a preset direction, and the preset direction is perpendicular to the plane where the inner wall of the box shell is located, one end of the main body portion is connected to the pad portion, and the other end is provided with an insert, the pad portion and the mounting portion of the reinforcing rib are pressed and connected by a connecting piece, the connecting piece passes through the pad portion and the mounting portion in sequence, and is partially accommodated in the spacing space, and the insert is used for inserting contacts or copper busbars.

[0006] Preferably, the main body and the spacer block of the insulator body are integrally formed.

[0007] Preferably, a plurality of umbrella skirts are provided on the side wall of the main body, the umbrella skirts extend along the circumference of the main body, and the plurality of umbrella skirts are arranged along the axial direction of the main body.

[0008] Preferably, the reinforcing rib is welded to the inner wall of the box shell, and the weld between the reinforcing rib and the box shell is located inside the box shell of the inflatable switch cabinet.

[0009] Preferably, the reinforcing rib also includes a first bending portion and a second bending portion, the first bending portion and the second bending portion are arranged opposite to each other, the first bending portion and the second bending portion are both bent in a direction close to the inner wall of the box shell, so that a spacing space is formed between the mounting portion and the inner wall of the box shell, the mounting portion is located between the first bending portion and the second bending portion, and the two ends of the mounting portion are respectively provided with a first edge and a second edge, one end of the first bending portion is connected to the first edge of the mounting portion, and the other end is welded to the inner wall of the box shell, and one end of the second bending portion is connected to the second edge of the mounting portion, and the other end is welded to the inner wall of the box shell.

[0010] Preferably, a first connecting hole is formed on the pad portion, and a second connecting hole is formed on the mounting portion, the first connecting hole is aligned with the second connecting hole, the connecting piece is a threaded connecting piece or a rivet connecting piece, the connecting piece passes through the first connecting hole and the second connecting hole, and presses the insulator body against the mounting portion.

[0011] Preferably, a first fitting surface is provided on one side of the mounting portion, and a second fitting surface is provided on one side of the pad portion, the shape of the second fitting surface is adapted to the shape of the first fitting surface, and the second fitting surface is tightly attached to the first fitting surface; the width dimension of the second fitting surface is less than or equal to the width dimension of the first fitting surface.

[0012] Preferably, the first bonding surface and the second bonding surface are both planes.

[0013] Preferably, the insulator body is made of epoxy resin material.

[0014] According to an embodiment of the second aspect of the utility model, a gas-filled switch cabinet system is provided, comprising a housing, a control circuit device and the above-mentioned post insulator device. The housing is used to accommodate and protect the control circuit device, the housing is provided with a sealed inner cavity, the inner cavity is filled with insulating gas, and the control circuit device is accommodated in the inner cavity. The control circuit device includes a grounding contact, and the post insulator device is installed on the side wall of the inner cavity to support the grounding contact and insulate it from the ground.

[0015] Preferably, the control circuit device includes a main circuit to be controlled and an isolating switch, the main circuit and the isolating switch are both accommodated in the box shell, the isolating switch includes a moving contact and a connecting contact, the moving contact and the connecting contact are both electrically connected to the main circuit to be controlled, the grounding contact is provided with a plug-in portion, the plug-in portion is inserted into the first insert of the post insulator device, the grounding contact is connected to the post insulator device through the plug-in portion, and the moving contact can move between the grounding contact and the connecting contact, thereby contacting the grounding contact or the connecting contact.

[0016] The post insulator device of the utility model is installed on the inner wall of the box shell of the inflatable switch cabinet by installing the reinforcing rib on the inner wall of the box shell through the first bending part and the second bending part, and the first bending part and the second bending part are bent in the direction close to the inner wall of the box shell, so that a spacing space is formed between the installation part of the reinforcing rib and the inner wall of the box shell. At this time, it is only necessary to open a connection hole on the installation part of the reinforcing rib, and the pad part of the insulator body can be pressed and fixed on the installation part by a threaded connector or a rivet connector, without opening a hole on the side wall of the inflatable cabinet. Therefore, the device can realize the installation of the post insulator in the inflatable switch cabinet under the condition of avoiding damaging the sealing of the box shell. Further, compared with the main body and the pad part being manufactured separately and then combined during installation, the body of the insulator in the device is integrally formed, which can more conveniently and quickly complete the installation and removal of the entire insulator body. Therefore, the post insulator device can be conveniently and quickly installed, and there is no need to open a hole on the side wall of the box shell, so that the sealing of the box shell can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the post insulator device in some embodiments of the utility model;

[0018] Figure 2a is an axial cross-sectional view of a post insulator device in some embodiments of the utility model;

[0019] Figure 2b is a top view of a post insulator device in some embodiments of the utility model;

[0020] Figure 3a It is a schematic structural diagram of the main body in some embodiments of the utility model;

[0021] Figure 3b is an axial cross-sectional view of the main body in some embodiments of the utility model;

[0022] Figure 4a is a cross-sectional view of a pad portion in some embodiments of the utility model;

[0023] Figure 4b is a top view of a pad portion in some embodiments of the utility model;

[0024] Figure 5 It is a partial cross-sectional view of the reinforcing rib in the embodiment of the utility model;

[0025] Figure 6 It is a structural schematic diagram of a post insulator device in some other embodiments of the utility model;

[0026] Figure 7It is a schematic structural diagram of an insulator body integrally formed in some other embodiments of the utility model;

[0027] Figure 8 It is a cross-sectional view in the axial direction of an integrally formed insulator body in some other embodiments of the utility model;

[0028] Figure 9a It is a side view of an insulator body integrally formed in some other embodiments of the utility model;

[0029] Figure 9b It is a front view of an insulator body integrally formed in some other embodiments of the utility model;

[0030] Fig.9c It is a top view of an integrally formed insulator body in some other embodiments of the utility model;

[0031] Fig.10 It is a partial structural schematic diagram of the inflatable switch cabinet in the embodiment of the utility model;

[0032] Fig.11 It is a schematic structural diagram of the inflatable switch cabinet in the embodiment of the utility model after omitting the right side wall.

[0033] In the figure: 1-insulator body, 11-main body, 12-spacer block, 13-first insert, 14-first connecting hole, 15-second insert, 16-umbrella skirt, 2-reinforcement rib, 21-second connecting hole, 3-gas box front panel, 4-rivet nut, 5-box shell, 51-isolating switch, 52-grounding contact. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, but not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the utility model.

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0036] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connection", "setting", "installation", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0038] Example 1

[0039] See also Figure 6 The utility model discloses a post insulator device, comprising a reinforcing rib 2 and an insulator body 1.

[0040] Among them, the reinforcing rib 2 and the insulator body 1, the reinforcing rib 2 is installed on the inner wall of the box shell 5 of the inflatable switch cabinet, the reinforcing rib 2 is provided with a mounting portion, and there is a spacing space between the mounting portion and the inner wall of the box shell 5. The insulator body 1 includes a main body 11 and a cushion block 12, the main body 11 extends along a preset direction, the preset direction is perpendicular to the plane where the inner wall of the box shell 5 is located, one end of the main body 11 is connected to the cushion block 12, and the other end is provided with an insert (a first insert 13), the cushion block 12 and the mounting portion of the reinforcing rib 2 are pressed and connected by a connector, the connector sequentially passes through the cushion block 12 and the mounting portion, and is partially accommodated in the spacing space, and the insert (the first insert 13) is used to insert a contact or a copper busbar.

[0041] It should be noted that the post insulator device is particularly suitable for use in gas-filled switchgear. Fig.10 and Fig.11 First, the use scenario of the inflatable switch cabinet is described: the box shell 5 (or gas box) of the inflatable switch cabinet is welded by multiple aluminum plates, and the thickness of the side plate is 3 to 5 mm. The gas box is filled with insulating gas, such as SF6, nitrogen, etc., which is used to protect the important components such as the disconnector 51 and the control circuit located therein from moisture or salt-alkali corrosion. Therefore, in order to improve the isolation effect of the insulating gas, it is necessary to ensure the sealing of the gas box.

[0042] Furthermore, the isolating switch 51 in the box shell 5 is used to control the connection or disconnection of the main control circuit. The isolating switch 51 includes a moving contact, a grounding contact 52 and a connection contact, and the moving contact can move between the grounding contact 52 and the connection contact. The moving contact and the connection contact are both electrically connected to the main control circuit. When the moving contact is in contact with the connection contact, the main control circuit is turned on, that is, the isolating switch 51 is in a closed state; when the moving contact is between the connection contact and the grounding contact 52, but not in contact with both, the isolating switch 51 is in an open state; when the moving contact is in contact with the grounding contact 52, the isolating switch 51 is in a grounding state. Therefore, in the box shell 5, it is necessary to install the grounding contact 52 (or grounding copper busbar) through the support insulator to achieve the insulation and support function of the grounding contact 52. Specifically, installing the grounding contact 52 on the support insulator can ensure the reliability and stability of the grounding connection. The post insulator provides necessary support and insulation protection for the ground contact 52 , preventing direct contact between the ground contact 52 and other live parts, thereby avoiding the risk of short circuit and electric shock.

[0043] The existing post insulator needs to be installed on the box shell 5, usually by opening a mounting hole on the side wall of the box shell 5, and then installing the post insulator on the mounting hole. However, this installation method will destroy the sealing structure of the box shell 5, causing the sealing performance of the box shell 5 to decrease.

[0044] In this regard, the post insulator device in this embodiment is provided by installing the reinforcing rib 2 on the inner wall of the box shell 5 of the inflatable switch cabinet. The reinforcing rib 2 is connected to the inner wall of the box shell 5 through the first bending portion and the second bending portion. Both the first bending portion and the second bending portion are bent in the direction close to the inner wall of the box shell 5, so that a spacing space is formed between the installation portion of the reinforcing rib 2 and the inner wall of the box shell 5. At this time, it is only necessary to open a connection hole on the installation portion of the reinforcing rib 2, and no hole is needed on the side wall of the inflatable cabinet. The pad portion 12 of the insulator body 1 can be pressed and fixed on the installation portion by a threaded connector or a rivet connector. Therefore, the device can realize the installation of the post insulator in the inflatable switch cabinet without damaging the sealing of the box shell 5.

[0045] In addition, if Figure 1 and Figure 6 As shown, it should be noted that the first insert 13 is directly cast in epoxy resin to be embedded and fixed in the insulator body 1. The first insert 13 is cylindrical, and a through insertion cavity is provided inside it to facilitate the installation of contacts or copper bars. Of course, the inner wall of the insertion cavity can be provided with a connecting thread, and the contact and the insertion cavity are connected by threads.

[0046] Specifically, Figure 1 and Figure 6As shown, the reinforcing rib 2 is welded to the inner wall of the box shell 5, and the weld between the reinforcing rib 2 and the box shell 5 is inside the box shell 5 of the inflatable switch cabinet. By installing the reinforcing rib 2 by welding, it is possible to avoid opening a hole in the box shell 5, thereby further avoiding damaging the sealing of the box shell 5.

[0047] Further, see Figure 1 and Figure 6 The reinforcing rib 2 further includes a first bending portion and a second bending portion, the first bending portion and the second bending portion are arranged opposite to each other, and the first bending portion and the second bending portion are bent in a direction close to the inner wall of the box shell 5, so that a spacing space is formed between the mounting portion and the inner wall of the box shell 5. The mounting portion is located between the first bending portion and the second bending portion, and the two ends of the mounting portion are respectively provided with a first edge and a second edge, one end of the first bending portion is connected to the first edge of the mounting portion, and the other end is welded to the inner wall of the box shell 5, and one end of the second bending portion is connected to the second edge of the mounting portion, and the other end is welded to the inner wall of the box shell 5.

[0048] It can be seen that in this embodiment, by providing the first bent portion and the second bent portion of the reinforcing rib 2, a spacing space is formed between the mounting portion and the inner side wall of the box shell 5. When installing the insulator body 1, a threaded connector (e.g., a bolt) or a rivet connector (e.g., a rivet) is used, and the connector sequentially penetrates the pad portion 12 and the mounting portion, and is partially accommodated in the spacing space, thereby avoiding opening a hole in the box shell 5 to ensure the sealing of the box shell 5.

[0049] In some embodiments, Figure 3a , Figure 3b and Figure 4a , Figure 4b As shown, the main body 11 and the pad 12 are manufactured separately. Figure 2a and Figure 2b As shown, the column and the cushion block are connected by bolts so that the column and the cushion block are connected into a whole. Figure 1 As shown, the entire insulator body 1 is installed on the reinforcing rib 2. The spacer is rectangular and can fit the mounting portion of the reinforcing rib 2. The insulator (column) is connected to the reinforcing rib 2 through the spacer, which can achieve a more stable installation and connection.

[0050] In this preferred embodiment, Figure 7 and Figure 8As shown, the main body 11 and the spacer 12 of the insulator body 1 are integrally formed. Compared with the above-mentioned main body 11 and the spacer 12 are manufactured separately and then assembled during installation, the integrally formed insulator body 1 can more conveniently and quickly complete the installation and removal of the entire post insulator. In other words, the conventional post insulator cannot be directly fixed on the reinforcing rib 2 of its internal box shell 5. The post insulator in this embodiment realizes the functions of insulation and support, and omits the spacer (saving the installation steps of the spacer), and the structure is simple and practical.

[0051] As an example, Figure 6 As shown, the post insulator device is a post insulator for switch cabinets, especially a post insulator for inflatable cabinets. When in use, the post insulator in this embodiment is directly fixed to the riveted reinforcement rib 2 with bolts, and the support of the contact or copper bar and the insulation to the ground can be achieved through the insert. The post insulator has a simple structure, and the insert is directly cast into the epoxy resin, integrally formed to form a T-shaped post insulator, which is simple and convenient to install; compared with the Figure 1 The installation of the conventional post insulator shown in the figure requires first fixing the conventional post insulator on the spacer and then installing it on the riveted reinforcement rib 2. The installation is troublesome and increases the cost of the spacer. The post insulator is lighter and has a lower cost.

[0052] In this embodiment, if Figure 2b and Figure 7 As shown, the pad portion 12 is provided with a first connecting hole 14. Figure 5 As shown, the mounting portion is provided with a second connection hole 21. Figure 2a and Figure 6 As shown, the first connection hole 14 is aligned with the second connection hole 21 , and the connector is a threaded connector or a rivet connector, which passes through the first connection hole 14 and the second connection hole 21 and presses the insulator body 1 against the mounting portion.

[0053] Furthermore, an insert (second insert 15) is provided in the second connection hole 21 of the spacer portion 12, and the insert is embedded in the insulator body 1 during the integral molding process to form a fastened connection connector. By providing the second insert 15, the second insert 15 is cylindrical, and an internal thread may be provided on the inner side thereof to facilitate connection through a threaded connector. The inserts (first insert 13 and second insert 15) in this embodiment may be commercially available inserts.

[0054] like Figure 3bAs shown, in this embodiment, a plurality of sheds 16 are provided on the side wall of the main body 11, and the sheds 16 extend along the circumferential direction of the main body 11, and the plurality of sheds 16 are arranged along the axial direction of the main body 11. The design of the sheds 16 increases the creepage distance of the insulator surface, that is, the path length of the current flowing on the insulator surface. This helps to prevent surface flashover under humid or polluted conditions and improve the electrical performance of the insulator.

[0055] like Fig.10 and Fig.11 As shown, in this embodiment, the mounting portion of the reinforcing rib 2 is in the shape of a long strip, and the number of the insulator bodies 1 is multiple, and the multiple insulator bodies 1 are arranged along the extension direction of the reinforcing rib 2 and installed on the mounting portion of the reinforcing rib 2. The pad portion 12 is in the shape of a rectangle, and its length direction is on the same extension line as the extension direction of the reinforcing rib 2.

[0056] A first fitting surface is provided on one side of the mounting portion, and a second fitting surface is provided on one side of the pad portion 12. The shape of the second fitting surface is adapted to the shape of the first fitting surface, and the second fitting surface is tightly attached to the first fitting surface. Specifically, the shape of the second fitting surface is adapted to the first fitting surface in order to avoid a gap between the mounting portion and the pad portion 12 that may cause shaking. Exemplarily, the first fitting surface may be a convex arc surface, and the second fitting surface may be a concave arc surface. When the two can be attached to each other, the installation stability of the post insulator is improved. In the present embodiment, both the first fitting surface and the second fitting surface are planes, because the processing of the plane is relatively simple and can avoid obvious errors. Moreover, when the two planes are attached together, good installation stability can also be achieved.

[0057] In addition, the width of the second bonding surface is less than or equal to the width of the first bonding surface. On the one hand, this is to save space and cost, on the other hand, if the width of the second bonding surface (i.e. the width of the pad portion) is too large, unstable installation may occur.

[0058] In this embodiment, the insulator body 1 is made of epoxy resin material. Epoxy resin is a good thermosetting material and is suitable for manufacturing an integrally cast structure. In particular, epoxy resin shrinks relatively little during the curing process, which helps to ensure accurate mold replication and reduce internal stress caused by shrinkage, thereby improving the dimensional stability and durability of the product, and thus being able to exhibit a higher surface smoothness. The surface smoothness of the insulator is required to be high, because the uneven surface of the insulator may cause uneven electric field distribution, especially in depressions, protrusions or cracks. These areas may form points with higher electric field strength, thereby increasing the risk of partial discharge.

[0059] Moreover, the epoxy resin itself has good insulation properties. Therefore, by using the epoxy resin to make the insulator body 1, the surface of the insulator body 1 can be kept smooth while ensuring the insulation properties of the insulator body 1.

[0060] The working principle of the post insulator device in this embodiment will be described below:

[0061] Figure 1-Figure 4b The post insulators in some embodiments are shown in FIG. The post insulator device is composed of a separately manufactured spacer block portion 12 (such as Figure 4a , Figure 4b as shown) and the insulator body 11 (as shown Figure 3a , Figure 3b As shown in Figure 2a and Figure 2b As shown, during installation, the spacer block 12 and the main body 11 of the insulator need to be connected first to form a whole. Figure 3b The figure also shows a first insert 13, which is embedded in the insulator body 1 made of epoxy resin. Figure 1 The support insulator is integrally mounted on the front panel 3 of the gas box through a spacer and a riveted reinforcement rib 2. Further, as Figure 2b As shown, Figure 2b The cross-sectional structure of the reinforcing rib 2 and the rivet nut 4 are shown in the figure, and the spacer of the insulator body 1 is connected to the reinforcing rib 2 through the rivet nut 4.

[0062] Figure 6-9c The post insulators in some other embodiments are shown. Figure 7 and Figure 8 As shown, the first insert 13 is directly cast into epoxy resin to form a T-type post insulator, and the insulator body 1 in this embodiment can be obtained. Figure 9a , Figure 9b and Fig.9c The side view, front view and top view of the one-piece insulator are shown respectively. Figure 6 In the structural diagram shown, the post insulator is directly fixed to the riveted reinforcement rib 2 by bolts, and the support of the contact or copper bar and the insulation to the ground can be achieved through the insert (the first insert 13). Figure 1 ), the post insulator and the spacer are separately arranged and connected only during installation. The post insulator structure in this embodiment realizes the functions of the conventional post insulator and the spacer, which is beneficial to the installation of the post insulator and saves costs.

[0063] In summary, the post insulator device can be installed conveniently and quickly, and there is no need to open a hole in the side wall of the box shell 5, thereby ensuring the sealing of the box shell 5.

[0064] Example 2

[0065] See also Fig.10 and Fig.11 The utility model discloses a gas-filled switch cabinet system, comprising a box shell 5, a control circuit device and the above-mentioned support insulator device.

[0066] The housing 5 is used to accommodate and protect the control circuit equipment. The housing 5 is provided with a sealed inner cavity filled with insulating gas, and the control circuit equipment is accommodated in the inner cavity. The control circuit equipment includes a grounding contact 52, and the support insulator device is installed on the side wall of the inner cavity to support the grounding contact 52 and insulate it from the ground.

[0067] Specifically, the insulating gas may be SF6, nitrogen, etc., and by filling the insulating gas, important components such as the control circuit equipment (ie, the isolating switch 51 and the control circuit) located therein can be protected from moisture or salt-alkali corrosion.

[0068] Further, the control circuit device includes a main circuit to be controlled and an isolating switch 51, which are both accommodated in a housing 5. The isolating switch 51 includes a moving contact, a grounding contact 52 and a connecting contact, which are both electrically connected to the main circuit to be controlled. The grounding contact 52 is provided with a plug-in portion, which is inserted into the first insert 13 of the post insulator device. The grounding contact 52 is connected to the post insulator device through the plug-in portion, and the moving contact can move between the grounding contact 52 and the connecting contact, thereby contacting the grounding contact 52 or the connecting contact.

[0069] When the moving contact is in contact with the make contact, the main circuit is connected, that is, the isolating switch 51 is in the closed state; when the moving contact is between the make contact and the grounding contact 52 but not in contact with both, the isolating switch 51 is in the open state and the main circuit is disconnected; when the moving contact is in contact with the grounding contact 52, the isolating switch 51 is in the grounding state and the main circuit is grounded.

[0070] The inflatable switch cabinet system in this embodiment can be installed conveniently and quickly by adopting the post insulator device in Example 1, and there is no need to open holes in the side walls of the box shell 5, thereby ensuring the sealing of the box shell 5.

[0071] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A post insulator device, characterized in that: include: The reinforcing rib (2) and the insulator body (1), The reinforcing rib (2) is mounted on the inner wall of the box shell (5) of the inflatable switch cabinet, the reinforcing rib (2) is provided with a mounting portion, and there is a spacing space between the mounting portion and the inner wall of the box shell (5). The insulator body (1) comprises a main body (11) and a spacer block (12); the main body (11) extends along a preset direction, the preset direction being perpendicular to the plane on which the inner wall of the housing (5) is located; one end of the main body (11) is connected to the spacer block (12), and the other end is provided with a first insert (13); The pad portion (12) and the mounting portion of the reinforcing rib (2) are compressed and connected via a connecting piece, the connecting piece passes through the pad portion (12) and the mounting portion in sequence, and is partially accommodated in the spacing space, and the first insert (13) is used for inserting contacts or copper bars.

2. The post insulator device according to claim 1, characterized in that: The main body (11) and the spacer block (12) of the insulator body (1) are integrally formed.

3. The post insulator device according to claim 2, characterized in that: A plurality of umbrella skirts are arranged on the side wall of the main body (11), the umbrella skirts extend along the circumference of the main body (11), and the plurality of umbrella skirts are arranged in an axial direction of the main body (11).

4. The post insulator device according to claim 1, characterized in that: The reinforcing rib (2) is welded to the inner wall of the box shell (5), and the weld between the reinforcing rib (2) and the box shell (5) is located inside the box shell (5) of the inflatable switch cabinet.

5. The post insulator device according to claim 4, characterized in that: The reinforcing rib (2) further comprises a first bending portion and a second bending portion, wherein the first bending portion and the second bending portion are arranged opposite to each other, and the first bending portion and the second bending portion are both bent in a direction close to the inner wall of the box shell (5), so that a spacing space is formed between the mounting portion and the inner wall of the box shell (5). The mounting portion is located between the first bending portion and the second bending portion, and the two ends of the mounting portion are respectively provided with a first edge and a second edge. One end of the first bent portion is connected to the first edge of the mounting portion, and the other end is welded to the inner wall of the box shell (5); one end of the second bent portion is connected to the second edge of the mounting portion, and the other end is welded to the inner wall of the box shell (5).

6. The post insulator device according to claim 1, characterized in that: The pad portion (12) is provided with a first connection hole (14), the mounting portion is provided with a second connection hole (21), the first connection hole (14) is aligned with the second connection hole (21), The connecting piece is a threaded connecting piece or a rivet connecting piece, and the connecting piece passes through the first connecting hole (14) and the second connecting hole (21), and presses the insulator body (1) against the mounting portion.

7. The post insulator device according to claim 6, characterized in that: A first fitting surface is provided on one side of the mounting portion, and a second fitting surface is provided on one side of the pad portion (12), wherein the shape of the second fitting surface is adapted to the shape of the first fitting surface, and the second fitting surface is closely attached to the first fitting surface; The width of the second bonding surface is smaller than or equal to the width of the first bonding surface.

8. The post insulator device according to any one of claims 1 to 7, characterized in that: The insulator body (1) is made of epoxy resin material.

9. An inflatable switch cabinet system, characterized in that: It comprises a housing (5), a control circuit device and a post insulator device according to any one of claims 1 to 8, The housing (5) is used to accommodate and protect the control circuit device. The housing (5) is provided with a sealed inner cavity, the inner cavity is filled with insulating gas, and the control circuit device is accommodated in the inner cavity. The control circuit device comprises a grounding contact (52), and the support insulator device is installed on the side wall of the inner cavity and is used for supporting the grounding contact (52) and insulating it from the ground.

10. The gas-filled switch cabinet system according to claim 9, characterized in that: The control circuit device comprises a main circuit to be controlled and an isolating switch (51), The main circuit and the isolating switch (51) are both accommodated in the housing (5); the isolating switch (51) comprises a moving contact and a connection contact; the moving contact and the connection contact are both electrically connected to the main circuit to be controlled. The grounding contact (52) is provided with an inserting portion, the inserting portion is inserted into the first insert (13) of the post insulator device, and the grounding contact (52) is connected to the post insulator device via the inserting portion. The movable contact can move between the grounding contact (52) and the closing contact, thereby contacting the grounding contact (52) or the closing contact.

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