Upper inlet type power distribution cabinet waterproof structure with water entering in cable drainage mode

Abstract

The utility model discloses an upper inlet type power distribution cabinet waterproof structure with water entering from a cable drainage mode, which comprises a fireproof foam board, a lower through hole is arranged on the fireproof foam board, the fireproof foam board is inserted into a half-surrounding frame of a third metal mold, a fourth metal mold is arranged on the rear side of the fireproof foam board, and a lower through hole is arranged on the fourth metal mold. The two ends of the fourth metal mold are connected with the two sides of the third metal mold correspondingly, a first metal mold is clamped to the tops of the third metal mold and the fourth metal mold, a second metal mold is clamped between the first metal mold and the third metal mold, and a non-metal foam PT plate is arranged between the first metal mold and the second metal mold. And an upper through hole is formed in the nonmetal foam PT plate. The upper inlet type power distribution cabinet waterproof structure with water entering from the cable drainage mode is additionally arranged on the cable harness at the top of the power distribution cabinet, so that water can be prevented from directly invading the power distribution cabinet in the drainage mode along the cable penetrating into the power distribution cabinet from the bridge, the waterproof effect is good, and the service life is long.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution cabinet waterproofing, in particular to a top-inlet type power distribution cabinet waterproofing structure with water entering in a cable drainage manner. Background Art

[0002] There are two common ways to insert cables (control cables and power cables) into low-voltage distribution cabinets on site: one is to insert cables from the bottom of the cabinet, which has a cable interlayer or cable channel on the lower layer; the other is to insert cables from the top of the cabinet, which generally has a cable bridge installed diagonally above the cabinet. When the cables reach the nearest place to the cabinet, they fly through the main bridge or pass through the branch bridge and enter the top of the distribution cabinet. The second method is often used in distribution cabinets 0 meters above the ground.

[0003] As the structure of the house ages, there are occasional leaks, or various pipes leak on site, and the power distribution cabinets installed indoors are not designed to be rainproof, which often causes water leakage above the power distribution cabinets and causes failures. In the actual waterproofing of the power distribution cabinet, it was found that the dripping water directly above the power distribution cabinet can be better prevented by laying plastic film. On the contrary, there is a very tricky intrusion situation, that is, water leaks into the cable bridge, and then the water directly invades the power distribution cabinet along the cable from the bridge to the power distribution cabinet in a drainage manner. The fireproof mud used to seal the holes for the cables cannot prevent it at all. Even if it is prevented, as more and more water flows down, because the power distribution cabinet does not have a rainproof function, the accumulated water on the top of the cabinet will eventually invade the power distribution room.

[0004] Therefore, it is necessary to invent a structure that blocks water leakage in the manner of drainage along the cable to solve the above-mentioned problem. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the utility model is how to block water from leaking into the cable bridge and directly invading the distribution cabinet in a drainage manner along the cables passing from the bridge to the distribution cabinet. A waterproof structure for an upper-inlet type distribution cabinet is proposed, which allows water to enter in a drainage manner from the cables.

[0006] In order to solve the above technical problems, the utility model provides a waterproof structure of a top-inlet type distribution cabinet that allows water to enter by drainage from cables, including: a fireproof foam board, on which a lower opening is opened according to the shape of the top cable harness of the distribution cabinet, the fireproof foam board on one side of the lower opening is disconnected, the cable harness is inserted into the lower opening from the disconnected position, the fireproof foam board is inserted into a semi-enclosed frame of a third metal mold, a fourth metal mold is arranged on the rear side of the fireproof foam board, the two ends of the fourth metal mold are respectively connected to the two sides of the third metal mold, a first metal mold is clamped on the top of the third metal mold and the fourth metal mold, a second metal mold is clamped between the first metal mold and the third metal mold, a non-metallic foam PT board is arranged between the first metal mold and the second metal mold, an upper opening is opened on the non-metallic foam PT board according to the shape of the top cable harness of the distribution cabinet, and the non-metallic foam PT board on one side of the upper opening is disconnected.

[0007] In a preferred embodiment of the present scheme, the third metal mold includes a left side plate, a front side plate and a right side plate connected in sequence, the top of the front side plate is connected to an extension plate extending forward, the fireproof foam plate is inserted between the left side plate, the front side plate, the right side plate and the fourth metal mold, and the two ends of the fourth metal mold are respectively connected to the left side plate and the right side plate.

[0008] Furthermore, the tops of the left side plate and the right side plate are both inclined downward toward the front side, and the inclination is the same as the inclination of the extension plate.

[0009] Furthermore, the first metal mold includes a left rod, a rear rod and a right rod which are connected in sequence, and the bottom ends of the left rod, the rear rod and the right rod are all provided with communicating glue grooves.

[0010] Furthermore, the connection between the upper through-port and the cable harness and the glue groove are filled with waterproof and flame-retardant foam glue.

[0011] Furthermore, the second metal mold is connected to the third metal mold via a plurality of L-shaped strong magnetic outer snap-fits; the first metal mold is connected to the second metal mold via a plurality of L-shaped strong magnetic inner snap-fits; and the first metal mold is connected to the third metal mold via a plurality of linear strong magnetic snap-fits.

[0012] The waterproof structure of the top-inlet type distribution cabinet that drains water from the cables can prevent water from directly invading the distribution cabinet by draining along the cables that pass from the bridge to the distribution cabinet by installing it on the cable harness on the top of the distribution cabinet. It has good waterproof effect and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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.

[0014] Figure 1 This is a schematic diagram of the installation structure of the waterproof structure of the top-inlet type power distribution cabinet with water entering through cable drainage;

[0015] Figure 2 It is a structural schematic diagram of a fireproof foam board;

[0016] Figure 3 This is a schematic diagram of the installation structure of the fireproof foam board and the cable harness;

[0017] Figure 4 is a schematic structural diagram of a third metal mold;

[0018] Figure 5 It is a schematic diagram of the structure after being inserted into the third metal mold;

[0019] Figure 6 is a schematic structural diagram of a fourth metal mold;

[0020] Figure 7 It is a schematic diagram of the structure after being inserted into the fourth metal mold;

[0021] Figure 8 is a schematic structural diagram of a first metal mold;

[0022] Fig. 9 It is a schematic diagram of the structure after being inserted into the first metal mold;

[0023] Fig.10 is a schematic structural diagram of a second metal mold;

[0024] Fig.11 It is a schematic diagram of the structure after being inserted into the second metal mold;

[0025] Fig.12 It is a structural schematic diagram of a non-metallic foam PT board;

[0026] Fig.13 This is a schematic diagram of the structure after the non-metallic foam PT board is inserted;

[0027] Fig.14 The structure of the foam glue in an ideal state Figure 1 ;

[0028] Fig.15 The structure of the foam glue in an ideal state Figure 2 ;

[0029] Fig.16 It is a structural schematic diagram of an L-shaped strong magnetic outer mount, a linear strong magnetic mount, and an L-shaped strong magnetic inner mount.

[0030] In the figure: a first metal mold 1, a second metal mold 2, a third metal mold 3, a fourth metal mold 4, a fireproof foam board 5, a non-metallic foam PT board 6, a distribution cabinet 7, a cable harness 8, a lower opening 9, a left side panel 10, a front side panel 11, a right side panel 12, an extension panel 13, a left rod 14, a rear rod 15, a right rod 16, a glue groove 17, and an upper opening 18. 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. 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 protection of the utility model.

[0032] See also Figure 1 , Figure 1 The present invention is a structural schematic diagram of a waterproof structure of a top-inlet type power distribution cabinet that allows water to enter by drainage from cables; the waterproof structure of a top-inlet type power distribution cabinet that allows water to enter by drainage from cables comprises a fireproof foam plate 5, on which a lower opening 9 is provided according to the shape of a cable harness 8 at the top of a power distribution cabinet 7, the fireproof foam plate 5 on one side of the lower opening 9 is disconnected (directly cut with scissors), and the cable harness 8 is inserted into the lower opening 9 from the disconnected portion.

[0033] The third metal mold 3 includes a left side plate 10, a front side plate 11 and a right side plate 12 connected in sequence, the top of the front side plate 11 is connected with an extension plate 13 extending forward, the fireproof foam plate 5 is inserted between the left side plate 10, the front side plate 11, the right side plate 12 and the fourth metal mold 4, and the two ends of the fourth metal mold 4 are respectively connected to the left side plate 10 and the right side plate 12. The tops of the left side plate 10 and the right side plate 12 are both tilted downward toward the front side, and the inclination is the same as the inclination of the extension plate 13.

[0034] The first metal mold 1 is clamped on the top of the third metal mold 3 and the fourth metal mold 4. The first metal mold 1 includes a left rod 14, a rear rod 15 and a right rod 16 connected in sequence. The bottom ends of the left rod 14, the rear rod 15 and the right rod 16 are all provided with connected glue grooves 17.

[0035] A second metal mold 2 is clamped between the first metal mold 1 and the third metal mold 3, and a non-metallic foam PT board 6 is arranged between the first metal mold 1 and the second metal mold 2. An upper opening 18 is opened on the non-metallic foam PT board 6 according to the shape of the top cable harness 8 of the distribution cabinet, and the non-metallic foam PT board 6 on one side of the upper opening 18 is disconnected (directly cut with scissors).

[0036] In order to ensure the waterproof effect, the connection between the upper through-port 18 and the cable harness 8 and the glue groove 17 are filled with waterproof and flame-retardant foam glue.

[0037] In this solution, the connection between the metal molds is based on a strong magnetic bayonet, which is divided into three types according to different rotation angles (90 degrees, 180 degrees, and 270 degrees): an L-shaped strong magnetic inner bayonet, a linear strong magnetic bayonet, and an L-shaped strong magnetic outer bayonet. The second metal mold 2 and the third metal mold 3 are connected by multiple L-shaped strong magnetic outer bayonet; the first metal mold 1 and the second metal mold 2 are connected by multiple L-shaped strong magnetic inner bayonet; the first metal mold 1 and the third metal mold 3 are connected by multiple linear strong magnetic bayonet; see Fig.16 , Fig.16 It is a structural schematic diagram of an L-shaped strong magnetic outer mount, a linear strong magnetic mount, and an L-shaped strong magnetic inner mount.

[0038] The installation method of the waterproof structure of the top-inlet type power distribution cabinet with water inlet from the cable drainage method is as follows:

[0039] ① When the power distribution cabinet does not need to be powered off (power outage is more urgent and safer, and construction can be carried out without power outage), use an insulated ladder to climb up to the top of the power distribution cabinet where the incoming cables are convenient for construction. Arrange the cables on the top of the cabinet as much as possible, and stuff the cables and cable gaps at the cabinet entrance with self-adhesive rubber. Use two large cable ties to bundle the cable entrance and 15cm above into a bundle (if there are thicker cables that are too hard to be arranged, it does not matter, and it will not affect subsequent construction).

[0040] ②Take out 4 mold takers, and get the shape of the cable bundle from 4 directions on the top of the power distribution cabinet close to the top plane of the cabinet. Then use a marker to draw the shape on the mold taker completely in the center on the fireproof foam board 5, and use a utility knife to cut the marked shape. It is more convenient to use the mold taker to cut when using a knife. (If there is no mold taker, rough processing can roughly measure the diameter of the cable bundle. The fireproof foam board 5 is cut out to make a center hole, but the sealing effect is not as good as the mold taker, and more foam glue will come out of the cabinet.) Finally, cut a hole at the edge of the hole (lower opening 9) closest to the edge of the fireproof foam board 5, and use the elasticity of the foam board to break the opening to insert the cable. Please refer to Figure 2-3 , Figure 2 It is a structural schematic diagram of a fireproof foam board; Figure 3Schematic diagram of the installation structure of fireproof foam board and cable harness.

[0041] ③ Insert into the third metal mold 3, see Figure 4-5 , Figure 4 is a schematic structural diagram of a third metal mold;

[0042] Figure 5 It is a schematic diagram of the structure after being inserted into the third metal mold.

[0043] ④ Insert into the fourth metal mold 4, see Figure 6-7 , Figure 6 is a schematic structural diagram of a fourth metal mold;

[0044] Figure 7 It is a schematic diagram of the structure after being inserted into the fourth metal mold.

[0045] ⑤ Insert into the first metal mold 1, see Figure 8-9 , Figure 8 is a schematic structural diagram of a first metal mold;

[0046] Fig. 9 It is a schematic diagram of the structure after being inserted into the first metal mold.

[0047] ⑥ Insert the second metal mold 2, see Figure 10-11 , Fig.10 is a schematic structural diagram of a second metal mold; Fig.11 It is a schematic diagram of the structure after being inserted into the second metal mold.

[0048] ⑦ Make non-metallic foam PT board 6 in a similar way to step 2 and insert it. Figure 12-13 , Fig.12 It is a structural schematic diagram of a non-metallic foam PT board; Fig.13 It is a schematic diagram of the structure after the non-metallic foam PT board is inserted.

[0049] ⑧Inject waterproof and flame-retardant foam glue from the cable gap: In order to fully foam the water diversion eaves, inject a certain amount of waterproof and flame-retardant foam glue along the holes on both sides (the foam glue foams in 9 seconds and solidifies in 35 seconds). When foaming, try to press the fourth metal mold 4, the second metal mold 2 and the non-metallic foam PT board 6, and do not let too much foam glue overflow during foaming.

[0050] ⑨ After sufficient foaming and curing, remove them one by one in the reverse order of the mold installation sequence (the last bottom plate fireproof board does not need to be removed, just leave it on the top of the cabinet), slightly trim the place where the solidified foam glue emerges (no trimming is required if there is no requirement for aesthetics), and finally apply waterproof paint on the water diversion surface. The ideal shape of the foam glue after removing the mold is as follows Figure 14-15 As shown, Fig.14 The structure of the foam glue in an ideal state Figure 1 ; Fig.15 The structure of the foam glue in an ideal state Figure 2 ;. (The foam itself is waterproof, and the water diversion surface is painted with waterproof paint to enhance the waterproof performance for more safety.)

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waterproof structure for a top-inlet type power distribution cabinet with water entering through cable drainage, characterized in that: include: A fireproof foam board is provided with a lower opening according to the shape of the top cable harness of the power distribution cabinet, the fireproof foam board on one side of the lower opening is disconnected, and the cable harness is inserted into the lower opening from the disconnected portion, the fireproof foam board is inserted into a semi-enclosed frame of a third metal mold, a fourth metal mold is provided on the rear side of the fireproof foam board, and the two ends of the fourth metal mold are respectively connected to the two sides of the third metal mold, a first metal mold is provided on the top of the third metal mold and the fourth metal mold, a second metal mold is provided between the first metal mold and the third metal mold, a non-metallic foam PT board is provided between the first metal mold and the second metal mold, an upper opening is provided on the non-metallic foam PT board according to the shape of the top cable harness of the power distribution cabinet, and the non-metallic foam PT board on one side of the upper opening is disconnected.

2. The waterproof structure of the top-inlet type power distribution cabinet with water inlet from the cable drainage method according to claim 1 is characterized in that: The third metal mold includes a left side plate, a front side plate and a right side plate connected in sequence, the top of the front side plate is connected to an extension plate extending forward, the fireproof foam board is inserted between the left side plate, the front side plate, the right side plate and the fourth metal mold, and the two ends of the fourth metal mold are respectively connected to the left side plate and the right side plate.

3. The waterproof structure of the top-inlet type power distribution cabinet with water inlet from the cable drainage method according to claim 2 is characterized in that: The tops of the left side plate and the right side plate are both inclined downward toward the front side, and the inclination is the same as the inclination of the extension plate.

4. The waterproof structure of the top-inlet type power distribution cabinet with water inlet from the cable drainage method according to claim 3 is characterized in that: The first metal mold comprises a left rod, a rear rod and a right rod which are connected in sequence, and the bottom ends of the left rod, the rear rod and the right rod are all provided with communicating glue grooves.

5. The waterproof structure of the top-inlet type power distribution cabinet with water inlet from the cable drainage method according to claim 4 is characterized in that: The connection between the upper through port and the cable harness and the glue groove are filled with waterproof and flame-retardant foam glue.

6. The waterproof structure of the top-inlet type power distribution cabinet with water inlet from the cable drainage method according to claim 5 is characterized in that: The second metal mold is connected to the third metal mold via a plurality of L-shaped strong magnetic outer snap-fits; the first metal mold is connected to the second metal mold via a plurality of L-shaped strong magnetic inner snap-fits; the first metal mold is connected to the third metal mold via a plurality of linear strong magnetic snap-fits.

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