Plugging material, tool and method for terminal box and high-voltage switch cabinet

Abstract

The invention relates to the technical field of switch cabinet plugging, and particularly discloses a plugging material for a terminal box and a high-voltage switch cabinet, the plugging material comprises the following components by weight: 18.5%-26% of a base material, 7.1%-11.3% of a rat-proof material, 30%-39% of a fireproof material, 3%-5% of an environment-friendly plasticizer, and 3%-4% of a reinforcing agent; the fireproof mud disclosed by the invention has the functions of flame retardance and rat bite prevention, has the advantage of high safety, and can prevent rat bite after plugging, so that damage to internal elements caused by entering a terminal box and a high-voltage switch cabinet due to rat bite can be avoided; the fireproof mud is matched with an anti-blocking tool, has the advantages of being fast in forming and high in plasticity, can rapidly fill and adapt to complex hole structures, ensures integrity and tightness of blocking, and improves rapidness and effectiveness of blocking construction.

Description

Technical Field

[0001] The invention relates to the technical field of switch cabinet plugging, and in particular to a plugging material, tool and method for a terminal box and a high-voltage switch cabinet. Background Art

[0002] High-voltage distribution cabinets refer to electrical products with voltage levels ranging from 3.6kV to 550kV, which are used for switching, controlling or protecting in power generation, transmission, distribution, power conversion and consumption of power systems. They mainly include high-voltage circuit breakers, high-voltage disconnectors and grounding switches, high-voltage load switches, high-voltage automatic reclosing and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution devices and high-voltage switch cabinets. The high-voltage switch manufacturing industry is an important part of the power transmission and transformation equipment manufacturing industry, and occupies a very important position in the entire power industry.

[0003] In order to facilitate wiring, high-voltage distribution cabinets will reserve cable holes on the box. To ensure safe and stable operation of the power grid and reliable power supply, the cable holes in the switch cabinets in the power grid must be sealed with appropriate sealing materials;

[0004] Traditional plugging materials are prone to aging, failure at high temperatures, insufficient waterproof and moisture-proof properties, poor corrosion resistance, high viscosity and high density, which makes them insufficiently durable, poorly adaptable to the environment and difficult to construct. Summary of the invention

[0005] In view of the problems existing in the above-mentioned existing plugging materials, tools and methods for terminal boxes and high-voltage switch cabinets, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a plugging material, tool and method for terminal boxes and high-voltage switch cabinets.

[0007] In order to solve the above technical problems, the present invention provides the following technical solution: a plugging material for a terminal box and a high-voltage switch cabinet, comprising the following components in percentage by weight:

[0008] Base material 18.5-26%, rodent-proof material 7.1-11.3%, fireproof material: 30-39%, environmentally friendly plasticizer 3-5%, reinforcing agent 3-4%.

[0009] As a preferred solution of the plugging material for terminal boxes and high-voltage switch cabinets described in the present invention, the base material includes self-cross-linking silicone, cured polymer resin, and catalyst, calculated by weight percentage: self-cross-linking silicone 15%-20%, cured polymer resin 3%-5%, catalyst 0.5%-1%.

[0010] As a preferred solution of the blocking material for terminal boxes and high-voltage switch cabinets described in the present invention, the rodent-proof material includes bittering agent, glass fiber, and nano-alumina particles, calculated by weight percentage: bittering agent 0.1%-0.3%, glass fiber 5%-8%, and nano-alumina particles 2%-3%.

[0011] As a preferred solution of the plugging material for terminal boxes and high-voltage switch cabinets described in the present invention, the fireproof material includes phosphorus-nitrogen flame retardant, halogen-free flame retardant and expanded graphite, and the weight percentage is: phosphorus-nitrogen flame retardant 5%-7%, halogen-free flame retardant 15%-20% and expanded graphite 10%-12%;

[0012] Among them, phosphorus-nitrogen flame retardants use ammonium polyphosphate and melamine;

[0013] Halogen-free flame retardants include hydroxy magnesium aluminum phosphate or ammonium bicarbonate.

[0014] As a preferred solution of the plugging material for terminal boxes and high-voltage switch cabinets described in the present invention, the reinforcing agent is micron-grade silicon dioxide.

[0015] As a preferred solution of the plugging material for terminal boxes and high-voltage switch cabinets described in the present invention, it includes the following preparation method:

[0016] Add the base material, rodent-proof material and fire-proof material into the mixer and stir at 80-100℃ for 3-5 minutes;

[0017] Environmentally friendly plasticizer and reinforcing agent are added and stirred evenly to obtain fireproof mud for plugging.

[0018] A plugging tool for a terminal box and a high-voltage switch cabinet, applied to the above-mentioned plugging material for the terminal box and the high-voltage switch cabinet, comprising:

[0019] The shell part is installed at the outer wire hole of the terminal box and high-voltage switch cabinet;

[0020] The front side plate part is provided with two groups, and the two groups are respectively inserted from both sides of the shell part; inserted on the shell part, and used to form a casting cavity in the shell part;

[0021] The rear side plate part is provided with two groups, and the two groups are inserted from the upper and lower sides of the shell part respectively;

[0022] The gap between the front side plate part and the rear side plate part inserted into the shell part forms a casting cavity.

[0023] As a preferred solution of the sealing tool for terminal boxes and high-voltage switch cabinets described in the present invention, the shell part includes a rectangular frame and a fixed plate arranged on one side of the rectangular frame, a wire passing hole is opened at the axis center of the fixed frame, and a pouring nozzle is arranged above the rectangular frame.

[0024] As a preferred solution of the plugging tool for terminal boxes and high-voltage switch cabinets described in the present invention, the front side plate portion includes a plurality of strip plates, and the plurality of strip plates are slidably connected through a sliding member.

[0025] A plugging method for a terminal box and a high-voltage switch cabinet is applied to the plugging materials and tools for the terminal box and the high-voltage switch cabinet, and comprises the following steps:

[0026] S1. Take out the shell part and fix the side with the fixing plate to the terminal box and the outside of the high-voltage switch cabinet with bolts;

[0027] S2. Pass the cable heads of the terminal box and high-voltage switch cabinet through the wire holes;

[0028] S3, insert the two sets of front side panels from the left and right sides of the rectangular frame respectively, so that the inner sides thereof fit the outer sides of the cables;

[0029] S4. Insert the two sets of rear side panels into the rectangular frame from the upper and lower sides respectively, with the inner sides of the panels being fitted to the outer sides of the cables;

[0030] S5. Inject fireproof mud for plugging from the pouring nozzle, fill the pouring cavity with the injected fireproof mud, and complete the plugging after drying.

[0031] Beneficial effects of the present invention: The fireproof mud of the present invention has the functions of flame retardancy and anti-rat bite, and has the advantages of high safety. After blocking, it can prevent rat bites, and prevent rats from biting and entering the terminal box and high-voltage switch cabinet to damage the internal components;

[0032] The fireproof mud, combined with anti-blocking tools, has the advantages of fast molding and high plasticity. It can quickly fill and adapt to complex hole structures, ensure the integrity and tightness of the plugging, and improve the speed and effectiveness of the plugging construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0034] Figure 1 The present invention is a schematic structural diagram of a plugging tool for a terminal box and a high-voltage switch cabinet.

[0035] Figure 2 It is a rear view of the plugging tool used for terminal boxes and high-voltage switch cabinets according to the present invention.

[0036] Figure 3 The present invention is a schematic structural diagram of a shell portion of a plugging tool for a terminal box or a high-voltage switch cabinet.

[0037] Figure 4 The present invention is a schematic structural diagram of the front side plate portion of a plugging tool for a terminal box or a high-voltage switch cabinet. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0041] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0042] Example 1

[0043] A plugging material for terminal boxes and high-voltage switch cabinets, comprising the following components in percentage by weight:

[0044] Base material 18.5%-26%, rodent-proof material 7.1%-11.3%, fireproof material: 30%-39%, environmentally friendly plasticizer 3%-5%, reinforcing agent 3%-4%.

[0045] Preferably, the substrate comprises self-crosslinking silicone, curing polymer resin and catalyst, in percentage by weight: self-crosslinking silicone 15%-20%, curing polymer resin 3%-5%, catalyst 0.5%-1%.

[0046] Specifically, self-crosslinking silicone can cure rapidly at room temperature, and is heat-resistant and elastic, facilitating rapid molding and good flexibility;

[0047] Curing polymer resins can significantly speed up the molding process, ensuring a stable structure in a short time;

[0048] The catalyst uses benzoyl peroxide, which accelerates the formation under ultraviolet light or natural light conditions.

[0049] Preferably, the rodent-proof material comprises bittering agent, glass fiber, and nano-alumina particles, in percentage by weight: bittering agent 0.1%-0.3%, glass fiber 5%-8%, and nano-alumina particles 2%-3%.

[0050] Specifically, the bittering agent is dimethylaminoethyl dibenzoate, which has a non-toxic effect and can produce a very strong bitter taste, effectively preventing rodents from biting;

[0051] Glass fiber is not easy to be chewed by rodents and enhances the overall mechanical strength of fireproof mud;

[0052] Nano-alumina has high hardness and can increase the toughness of fireproof mud, making it difficult for rodents to bite through it.

[0053] Preferably, the fireproof material comprises a phosphorus-nitrogen flame retardant, a halogen-free flame retardant and expanded graphite, in percentage by weight: 5%-7% of the phosphorus-nitrogen flame retardant, 15%-20% of the halogen-free flame retardant and 10%-12% of the expanded graphite;

[0054] Among them, the phosphorus-nitrogen flame retardant uses ammonium polyphosphate and melamine in a ratio of 1:1. The combination of ammonium polyphosphate and melamine can form a carbonized layer when exposed to flames, reducing the speed of flame spread;

[0055] Halogen-free flame retardants such as hydroxy magnesium aluminum phosphate or ammonium bicarbonate can enhance the flame retardant effect and reduce smoke toxicity.

[0056] Expanded graphite expands at high temperatures to form a carbon layer, which blocks the spread of heat and flames.

[0057] Preferably, the reinforcing agent is micron-sized silicon dioxide to improve the thermal insulation effect and enhance the high temperature resistance.

[0058] Preferably, the substrate, rodent-proof material and fire-proof material are added into a mixer and stirred at 80-100° C. for 3-5 minutes;

[0059] Environmentally friendly plasticizer and reinforcing agent are added and stirred evenly to obtain fireproof mud for plugging.

[0060] Test Case

[0061] The fire-retardant mud was tested for its flame retardancy, fire resistance, expansion ratio, compressive strength, flexibility and aging resistance, low smoke density and toxicity, water absorption and electrical insulation, molding, and rat-proof data:

[0062]

[0063] According to the data, we can conclude that:

[0064] Flame retardant performance (UL 94V-0): Fire retardant mud quickly self-extinguishes after the flame is removed, and there is no dripping, achieving the highest flame retardant rating.

[0065] Oxygen Index (LOI): An oxygen index of 45% indicates that the fireproof mud is difficult to burn in the air and has good fire retardant effect.

[0066] Fire-resistant time: At a high temperature of 950°C, the fire-resistant mud can resist fire for more than 3 hours and is suitable for fire-proof partition applications.

[0067] Expansion ratio: It expands 10 times at 300℃, which can effectively fill the gaps and isolate the spread of flames and smoke.

[0068] Compressive strength: The compressive strength of 2.5MPa meets the mechanical requirements of cable sealing and maintains the stability of the structure.

[0069] Flexibility and anti-aging: Experiments show that fireproof mud has good flexibility and no aging phenomenon under long-term ultraviolet radiation.

[0070] Low smoke density and toxicity: The fire-proof mud produces low smoke density and no toxic gas exceeds the standard when burning, which improves safety.

[0071] Water absorption and electrical insulation: Low water absorption, suitable for humid environments, and excellent electrical insulation performance, suitable for cable plugging applications.

[0072] Rapid prototyping: When tested at room temperature, the fireproof mud is cured within 10 minutes and reaches the working strength, proving that its rapid prototyping ability is suitable for rapid installation and emergency repair environments.

[0073] Anti-rat bite damage: The reaction of rodents was tested in the experiment. The results showed that rodents had no biting behavior towards the fireproof mud containing bitter agents, and no obvious bite marks appeared on the surface. The bitter taste stimulation was significant, and the rodent-proof effect was good.

[0074] As can be seen from the above, the fireproof mud prepared in the present application has the advantages of flame retardancy, non-toxicity, anti-rat bite function, and fast molding speed;

[0075] With high temperature tolerance and excellent fire resistance, it can withstand stability in high temperature environments and provide an effective barrier to prevent the spread of fire when a fire occurs.

[0076] Example 2

[0077] Reference Figure 1-4 This embodiment is different from the first embodiment in that: a plugging tool for a terminal box and a high-voltage switch cabinet, applied to the plugging material for a terminal box and a high-voltage switch cabinet of embodiment 1, comprising:

[0078] The housing part 100 is installed at the outer wire hole of the terminal box or high-voltage switch cabinet;

[0079] The front side plate part 200 is provided with two groups, and the two groups are inserted from both sides of the shell part 100 respectively; inserted on the shell part 100, and used to form a casting cavity in the shell part 100;

[0080] The rear side plate part 300 is provided in two groups, and the two groups are inserted from the upper and lower sides of the shell part 100 respectively;

[0081] A gap between the front side plate portion 200 and the rear side plate portion 300 inserted into the housing portion 100 forms a casting cavity.

[0082] Preferably, the shell part 100 includes a rectangular frame 101 and a fixing plate 102 arranged on one side of the rectangular frame 101 . A wire hole 103 is provided at the axis of the fixing frame 101 . A pouring nozzle 104 is arranged above the rectangular frame 101 .

[0083] Specifically, screw holes are opened at the four corners of the fixing frame 101, and the fixing plate 101 is attached to the positions of the cable holes corresponding to the outer sides of the terminal box and the high-voltage switch cabinet, and then fixed by screws;

[0084] Preferably, the front side plate portion 200 includes a plurality of strip plates 201 , and the plurality of strip plates 201 are slidably connected via a sliding member 202 .

[0085] Specifically, the sliding member 202 includes a guide groove opened on the upper surface of the strip plate 201, a guide rod is installed in the guide groove, a sliding sleeve is fixed at the bottom of the strip plate 201 connected to the strip plate 201, the sliding sleeve is inserted into the guide groove and slides on the guide rod, and a spring is sleeved on one side of the sliding sleeve outside the guide rod, so that each strip plate 201 can be elastically displaced. When inserted, under the action of the spring, each strip plate 201 is attached to the outside of the cable, and the sealing performance is high;

[0086] The rear side plate part 300 adopts a straight plate, and high-density bristles are set on one side of the straight plate that fits the cable. After insertion, the high-density bristles fit the outside of the cable, which has a sealing effect. Even when pouring fireproof mud, it will not overflow. During the pouring process, it has the advantages of fast molding and high plasticity. It can quickly fill and adapt to complex hole structures, ensure the integrity and tightness of the plugging, and improve the speed and effectiveness of the plugging construction.

[0087] The rest of the structure is the same as that of Example 1.

[0088] Example 3

[0089] This embodiment is different from the above embodiments in that: a plugging method for a terminal box and a high-voltage switch cabinet is applied to the plugging materials and tools for the terminal box and the high-voltage switch cabinet in Embodiment 1 and Embodiment 2, and comprises the following steps:

[0090] S1. Take out the housing part 100, and fix the side with the fixing plate 102 to the terminal box and the outside of the high-voltage switch cabinet by bolts;

[0091] S2, pass the cable heads of the terminal box and the high-voltage switch cabinet through the wire hole 103;

[0092] S3, insert the two sets of front side plate parts 200 from the left and right sides of the rectangular frame 101 respectively, so that the inner sides thereof are in contact with the outer sides of the cables;

[0093] S4, insert the two sets of rear side plate parts 300 from the upper and lower sides of the rectangular frame 101 respectively, and similarly, the inner sides thereof are attached to the outer sides of the cables;

[0094] S5. Inject fireproof mud for plugging from the pouring nozzle 104. The injected fireproof mud fills the pouring cavity and dries to complete the plugging.

[0095] Specifically, the shell part 100 is divided into two parts from the middle, and the two parts are connected by a buckle, which is easy to disassemble. After the fireproof mud is dry, it can be disassembled and can be used multiple times, reducing cost waste.

[0096] The rest of the structure is the same as that of Example 2.

[0097] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0098] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0099] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0100] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A plugging material for terminal boxes and high-voltage switch cabinets, characterized in that: The composition comprises the following components by weight percentage: Base material 18.5%-26%, rodent-proof material 7.1%-11.3%, fireproof material: 30%-39%, environmentally friendly plasticizer 3%-5%, reinforcing agent 3%-4%.

2. The plugging material for terminal boxes and high-voltage switch cabinets according to claim 1, characterized in that: The base material comprises self-crosslinking silicone, curing polymer resin and catalyst, which are calculated by weight percentage as follows: 15%-20% of self-crosslinking silicone, 3%-5% of curing polymer resin and 0.5%-1% of catalyst.

3. The plugging material for terminal boxes and high-voltage switch cabinets according to claim 2, characterized in that: The rodent-proof material comprises bittering agent, glass fiber and nano-alumina particles, which are calculated by weight as follows: 0.1%-0.3% bittering agent, 5%-8% glass fiber and 2%-3% nano-alumina particles.

4. The plugging material for terminal boxes and high-voltage switch cabinets according to claim 3, characterized in that: The fireproof material includes phosphorus-nitrogen flame retardant, halogen-free flame retardant and expanded graphite, and the percentage by weight is: 5%-7% of phosphorus-nitrogen flame retardant, 15%-20% of halogen-free flame retardant and 10%-12% of expanded graphite; Among them, phosphorus-nitrogen flame retardants use ammonium polyphosphate and melamine; Halogen-free flame retardants include hydroxy magnesium aluminum phosphate or ammonium bicarbonate.

5. The plugging material for terminal boxes and high-voltage switch cabinets according to claim 4, characterized in that: The reinforcing agent is micron-sized silicon dioxide.

6. The plugging material for terminal boxes and high-voltage switch cabinets according to claim 1, characterized in that: The invention comprises the following preparation method: Add the base material, rodent-proof material and fire-proof material into the mixer and stir at 80-100℃ for 3-5 minutes; Environmentally friendly plasticizer and reinforcing agent are added and stirred evenly to obtain fireproof mud for plugging.

7. A plugging tool for terminal boxes and high-voltage switch cabinets, characterized in that: The plugging material for a terminal box or a high-voltage switch cabinet as claimed in claim 1 comprises: The housing part (100) is installed at the outer wire hole of the terminal box or high-voltage switch cabinet; The front side plate part (200) is provided with two groups, and the two groups are respectively inserted from both sides of the shell part (100); inserted on the shell part (100), and used to form a casting cavity in the shell part (100); The rear side plate part (300) is provided in two groups, and the two groups are respectively inserted from the upper and lower sides of the shell part (100); A gap between the front side plate part (200) and the rear side plate part (300) inserted into the housing part (100) forms a casting cavity.

8. The plugging tool for a terminal box or a high-voltage switch cabinet according to claim 7, characterized in that: The shell part (100) comprises a rectangular frame (101) and a fixing plate (102) arranged on one side of the rectangular frame (101); a wire hole (103) is provided at the axis of the fixing frame (101); and a pouring nozzle (104) is arranged above the rectangular frame (101).

9. The plugging tool for a terminal box or a high-voltage switch cabinet according to claim 8, characterized in that: The front side plate portion (200) comprises a plurality of strip plates (201), and the plurality of strip plates (201) are slidably connected via a sliding member (202).

10. A plugging method for a terminal box or a high-voltage switch cabinet, characterized in that: The plugging material and tool for terminal box and high-voltage switch cabinet as claimed in claim 6 and claim 9 include the following steps: S1. Take out the housing part (100), and fix the side with the fixing plate (102) to the terminal box and the outside of the high-voltage switch cabinet by bolts; S2, passing the cable heads of the terminal box and the high-voltage switch cabinet through the wire holes (103); S3, inserting two sets of front side plate parts (200) from the left and right sides of the rectangular frame (101) respectively, so that the inner sides thereof are in contact with the outer sides of the cables; S4, inserting two sets of rear side plate parts (300) from the upper and lower sides of the rectangular frame (101) respectively, and similarly, the inner sides thereof are attached to the outer sides of the cables; S5, injecting fireproof mud for plugging from the pouring nozzle (104), the injected fireproof mud fills the pouring cavity, and the plugging is completed after drying.

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