Clamping groove type cover plate sealing device

Abstract

The utility model relates to a cable trench cover plate, in particular to a clamping groove type cover plate sealing device, which comprises a matching component arranged between adjacent cover plates, the matching component comprises a first matching part and a second matching part, and a sealing element is arranged between the first matching part and the second matching part. The mortise and tenon joint structure is ingeniously arranged on the edges of the cover plates, the cover plates are mutually nested through the mortise and tenon joint devices on the edges of the cover plates, opening is convenient, opening and covering can be convenient during overhauling and operation and maintenance, construction is fast, the operation and maintenance efficiency is high, in addition, compared with an existing sealing measure, the sealing effect is good, and the sealing effect is good. The sealing device has the advantage of obvious good sealing effect.

Description

Technical Field

[0001] The utility model relates to a cable trench cover plate, in particular to a slot-type cover plate closing device. Background Art

[0002] Conventional covers of cable trenches, pipe trenches, etc. are independent of each other, and there are gaps between the covers after laying. According to Article 3.5.9 of the "Design Code for Disaster Prevention and Mitigation of Power Transmission and Transformation Projects" (DLT 5630-2021), within 10m of the outer contour of large oil-carrying equipment such as main transformers and high-voltage reactors, including cable trenches that are not in this interval, closed measures should be taken to prevent oil from flowing into the cable trench. In order to improve the fire emergency response capabilities of UHV substations and converter stations, it is required to take closing measures for cable trenches within 20m of the outer contour of the oil collection pit on the high-voltage side of parallel UHV transformers, high-voltage reactors, and converter transformers. Effective fire prevention and oil seepage prevention and closing measures for cable trenches in large oil-carrying equipment areas play a vital role in ensuring that fire accidents do not spread and quickly extinguish fires. In order to prevent the spread of oil fires, there are similar solutions in engineering as follows:

[0003] (1) Use mortar to seal the surface;

[0004] (2) Covering the ordinary cable trench cover with fire-resistant glass fiber cloth;

[0005] (3) The cable trench and cover plate are cast in one piece, and inspection holes are set locally;

[0006] (4) Use other sealing devices.

[0007] However, the existing solutions have the following defects:

[0008] (1) The existing technical solutions are difficult to operate and maintain. For example, for maintenance, the mortar surface needs to be removed and then re-sealed after maintenance, which is inconvenient and inefficient. When other sealing devices are used, they need to be disassembled and installed during maintenance, which also has similar problems.

[0009] (2) The sealing measures have hidden dangers. The mortar surface is prone to cracking and forming gaps over time; the inspection holes cannot be completely sealed; the fireproof glass fiber cloth is prone to aging and needs to be replaced regularly, which affects the appearance. Utility Model Content

[0010] In order to solve the problem that the closing device in the prior art is inconvenient to disassemble, the utility model provides a slot-type cover plate closing device that is easy to disassemble.

[0011] The technical solution adopted by the utility model to solve its technical problems is:

[0012] A slot-type cover plate closing device includes a matching component arranged between adjacent cover plates, the matching component includes a first matching part and a second matching part, a sealing element is provided between the first matching part and the second matching part, and the first folding plate and the second folding plate are connected by mortise and tenon joints through the sealing element.

[0013] Furthermore, both sides of the cover plate are provided with edging, the first matching part includes a first folded plate folded downward fixed or integrally provided on the corresponding edging, and the second matching part includes a second folded plate folded upward fixed or integrally provided on the corresponding edging. The folded plate structure fixed or integrally provided with the edging has a simple structure, is easy to process, and has low cost.

[0014] Furthermore, the first folding plate is located at the top end of the hemming, and the second folding plate is located at the bottom end of the hemming. In this way, the hemming and the hemming are kept at the same height, and the appearance is better.

[0015] Furthermore, the sealing element includes a rubber strip.

[0016] Furthermore, different cover plates press the rubber strip in the same direction.

[0017] Furthermore, the hemming extends from the side end of the cover plate to the lower end of the cover plate to form a right-angle hemming, and the lower end of the cover plate is provided with a groove matching the thickness of the right-angle hemming, and the bottom end of the right-angle hemming is located in the groove. In this way, the hemming is also flush with the lower end of the cover plate.

[0018] Beneficial effects:

[0019] (1) The utility model cleverly arranges the mortise and tenon structure at the edge of the cover plate, and the cover plates are nested with each other through the mortise and tenon device at the edge of the cover plate, which is convenient to open and close during inspection and maintenance, and the construction is fast and the operation and maintenance efficiency is high;

[0020] (2) By cleverly setting mortise and tenon devices on the edge of the cover plate and sandwiching sealing strips, the cable trench and pipe trench can be sealed and protected, which can effectively seal the cable trench, prevent the spread of fire and oil leakage, and provide protection for the safe operation of substations, converter stations or related equipment and facilities with similar needs. Compared with the existing sealing measures, it has the advantage of obvious good sealing effect;

[0021] (3) The utility model sets the sealing strip in the mortise and tenon structure without affecting the appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the structure of the GB-1 cover;

[0024] Figure 2 This is a schematic diagram of the structure of the GB-2 cover;

[0025] Figure 3 This is a schematic diagram of the structure of the GB-3 cover;

[0026] Figure 4 This is a schematic diagram of the structure of the GB-4 cover plate;

[0027] Figure 5 It is a schematic diagram of the assembly of GB-1, GB-2, GB-3 and GB-4 cover plates;

[0028] Figure 6 for Figure 5 A partial enlarged view of the middle A;

[0029] Figure 7 for Figure 5 A partial enlarged view of point B in the middle.

[0030] 1. Cover plate, 2. Edge binding, 3. First folding plate, 4. Second folding plate, 5. Rubber strip. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0034] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0035] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0036] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0037] The slot-type cover plate of the utility model is a more practical device for protecting cable trenches, pipe trenches, etc. The principle is to divide the cover plate into multiple small blocks, and through the mortise and tenon connections and supports set between the blocks, the purpose of fully protecting the cable trenches, pipe trenches, etc. is achieved.

[0038] Based on the above-mentioned conception principle, the utility model provides a slot-type cover plate closing device, such as Figures 1 to 7 , including a matching component arranged between adjacent cover plates 1, the matching component includes a first matching portion and a second matching portion, a sealing element is provided between the first matching portion and the second matching portion, and the first folding plate 3 and the second folding plate 4 are connected by mortise and tenon joints through the sealing element.

[0039] The cover plate 1 is provided with a rim 2 on both sides, and the rim 2 is usually a rim angle steel provided with the cover plate. The first matching part includes a downwardly folded first folding plate 3 fixed or integrally provided on the corresponding rim 2, and the second matching part includes an upwardly folded second folding plate 4 fixed or integrally provided on the corresponding rim 2. In the present invention, the first folding plate 3 and the second folding plate 4 are both steel plates welded on the rim angle steel. Figure 1 and Figure 2 , both sides of the cover plate 1 in the middle are welded with the corresponding first folding plate 3 or second folding plate 4; Figure 3 and Figure 4 The cover plate 1 at the end only needs to be welded on one side with the corresponding first folding plate 3 or second folding plate 4 .

[0040] The first folding plate 3 is located at the top end of the hemming 2, and the second folding plate 4 is located at the bottom end of the hemming 2. In this way, the first folding plate 3 and the second folding plate 4 are aligned with the hemming 2.

[0041] The sealing element includes a rubber strip 5. When the cover plate is pressed tightly, the deformation value of the rubber strip 5 should not be less than 0.8 mm. Different cover plates 1 press the rubber strip 5 in the same direction. For example, Figure 6 and Figure 7 , between two adjacent cover plates 1, the cover plate 1 on the right side is pressed to the left to ensure a constant pressing force. Of course, the sealing element can also be other sealing elements, such as a flexible graphite plate.

[0042] The edging 2 extends from the side end of the cover plate 1 to the lower end of the cover plate 1 to form a right-angle edging. The lower end of the cover plate 1 is provided with a groove matching the thickness of the right-angle edging. The bottom end of the right-angle edging is located in the groove, so that the lower end of the right-angle edging is flush with the lower end of the cover plate 1.

[0043] like Figures 5 to 7The utility model forms four types of cover plates, GB-1, GB-2, GB-3 and GB-4, by setting three types of mortise and tenon devices on the edge of the cover plate. When laying the cable trench and pipe trench cover plates, laying them in sequence can achieve effective closure of the cable trench and pipe trench. When laying the cover plates, they can be laid in a certain order according to the actual situation. GB-1 and GB-2 can be laid repeatedly according to the length of the cable trench to complete the closure of the cable trench and pipe trench. Through the above schematic laying, if oil leaks into the gap, it will also flow out from the opening of the cover plate 1 to both sides and will not penetrate into the cable trench and pipe trench, thereby playing an effective role in fire prevention and oil leakage prevention.

[0044] The utility model arranges a mortise and tenon device on the edge of the cover plate 1. When the cover plate 1 is laid, the mortise and tenon devices are nested with each other to effectively seal the cable trench and the pipe trench. At the same time, the mortise and tenon device does not affect the normal opening of the cover plate. The inspection and maintenance are convenient and efficient, and can provide safety protection for substations, converter stations or related equipment and facilities with similar needs.

[0045] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A slot-type cover plate closing device, characterized in that: The invention comprises a mating component arranged between adjacent cover plates (1), the mating component comprising a first mating portion and a second mating portion, a sealing element being provided between the first mating portion and the second mating portion, the first mating portion and the second mating portion being connected by mortise and tenon joints via the sealing element; both sides of the cover plate (1) are provided with edging (2), the first mating portion comprising a downwardly folded first folding plate (3) fixed or integrally arranged on the corresponding edging (2), and the second mating portion comprising an upwardly folded second folding plate (4) fixed or integrally arranged on the corresponding edging (2).

2. A slot-type cover plate closing device according to claim 1, characterized in that: The first folding plate (3) is located at the top end of the edge (2), and the second folding plate (4) is located at the bottom end of the edge (2).

3. A slot-type cover plate closing device according to claim 1, characterized in that: The sealing element comprises a rubber strip (5).

4. A slot-type cover plate closing device according to claim 3, characterized in that: Different cover plates (1) press against the rubber strip (5) in the same direction.

5. The slot-type cover plate closing device according to claim 1, characterized in that: The edging (2) extends from the side end of the cover plate (1) to the lower end of the cover plate (1) to form a right-angle edging. The lower end of the cover plate (1) is provided with a groove matching the thickness of the right-angle edging, and the bottom end of the right-angle edging is located in the groove.

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