Double-seal joint embedded part for indoor and outdoor joint of building

Abstract

The utility model discloses a double-seal joint embedded part for the indoor and outdoor connection position of a building, and relates to the technical field of building electricity. An outer sealing cover is installed at the outer end of the protective sleeve, the outer sealing cover is sealed with the inner side wall and the outer side wall of the protective sleeve and the main line, the other side of the protective sleeve is arranged indoors, the other side of the protective sleeve is sleeved with a supporting sleeve, the supporting sleeve is fixed to the outer side wall of the protective sleeve through a hoop body, and an inner sealing mechanism is installed in the inner end of the protective sleeve. According to the utility model, the outer sealing cover body is adopted to realize the sealing of the outer side of the sheath pipe, and the sealing of the sheath pipe and the main line can be realized, so that water and insect bodies are not easy to enter the sheath pipe, and the service life of the main line can be prolonged; the protective casing pipe is supported through the supporting sleeve, so that the protective casing pipe is not prone to deformation during indoor pouring, and the protective casing pipe is effectively protected; the inner sealing of the other end of the protective sleeve is achieved through the inner sealing mechanism, indoor water is not prone to entering the protective sleeve, and dust prevention is achieved through the dustproof cover.

Description

Technical Field

[0001] The utility model belongs to the technical field of building electrical technology, and in particular relates to a double-sealed joint embedded part used for indoor and outdoor joints of buildings. Background Art

[0002] Most of the underground lines are concealed projects. Doing a good job in laying the lines is an important key to ensure the safe operation of the underground power grid. The hazards of the buried lines are not obvious in the short term after they are laid, and they are concealed. Among them, after the cable enters the water, under the action of the electric field, water tree aging will occur, and finally the cable will be broken down. The water tree is a collection of gaps filled with water with a diameter of 0.1cm to several microns. The impurities, pores in the insulation and the local high electric field formed by the uneven joints between the insulation and the inner and outer semi-conductive layers are the starting point of the water tree. The development process of the water tree is generally more than 8 years. The higher the humidity, temperature, and voltage, the more ions contained in the water, the faster the water tree develops. When making the cable head (including the terminal head and the intermediate joint): During the specific installation process, the cable end sometimes slips into the cable well with accumulated water; the sweat on the operator's hands and face, and the liquid in the cleaning paper will also remain on the cable insulation layer; the excessive humidity of the air during production will also cause moisture to enter the cable. When a fault such as a breakdown of the intermediate joint occurs, the accumulated water in the cable well will enter the cable along the gap; in addition, at a construction site, water may enter the cable when external forces cause damage or breakdown of the cable.

[0003] Conventional cable laying adopts the form of cable trench. Since the depth of cable trench or cable tunnel exceeds the depth of sewer, drainage is very difficult. Due to its own position and depth limitation, there is water accumulation in cable trench or cable tunnel all year round. Therefore, during planning, coordination should be carried out to facilitate the drainage of cable trench (tunnel). If it is impossible to prevent water accumulation in cable tunnel, the middle joint in cable tunnel should be supported by bracket, but there is a lack of standardized and unified treatment methods, especially in old residential areas with complex underground conditions, standardized treatment is more difficult. In addition, when designing cable pipes, they should be as straight as possible, with fewer elbows, and the pipe welding points should be smooth and free of burrs to facilitate cable laying and ensure that the outer sheath of the cable is not scratched.

[0004] In addition, during the operation of the cable, moisture will form water droplets between the cable insulation and the insulation of the intermediate joint prefabricated parts, which may cause the cable joint to break down after about a year of operation. Continuous power supply is the basic requirement of various sectors of the national economy for electricity. Preventing water-damaged cables from being put into operation can improve the reliability of power supply. If the cable breaks down due to water ingress and moisture, it will directly lead to large-scale and long-term power outages for users, resulting in a decrease in the reliability of power supply and a serious negative impact on domestic electricity use. Most of the existing main lines for outdoor wiring in old residential areas are laid underground and enter the house through underground burial. However, some concentrated and frequent problems were found during the underground laying process:

[0005] 1. Frequent problems with outdoor main lines are: when the main line is buried underground in a residence, it is necessary to use a sheath pipe to protect it together with the main line. The sheath pipe protects the main line to prevent it from being squeezed or other damage caused by external factors. However, there is no unified and standardized sealing method between the sheath pipe and the main line. Most of them are sealed by tape wrapping or glue filling. In a long-term underground burial environment, there will be varying degrees of corrosion and cracking, and secondary sealing treatment is not carried out in time. The settled rainwater is easy to enter the sheath pipe after gathering, posing a safety hazard. When experiencing continuous precipitation or concentrated precipitation, the water flow with a large flow rate directly penetrates and soaks the main line, which directly damages the main line and makes it unable to be used normally.

[0006] 2. The frequent problems that occur in the main lines indoors are: after the sheath pipe enters the house, the end of the sheath pipe needs to be sealed, but the existing sealing device is not operated in a standardized manner during sealing, resulting in uneven fit after sealing. Once vibration, impact or other external influences occur, it will cause loosening and gaps, which will also affect the sealing performance, providing a gap-like channel for water to enter, thereby affecting the normal performance of the main line. Summary of the invention

[0007] In order to solve the problems mentioned in the above background technology, the purpose of the utility model is to provide a double-sealed joint embedded part for the indoor and outdoor joints of buildings, which can achieve the sealing of the sheath pipe and the protection of the main line.

[0008] The utility model discloses a double-sealed joint embedded part for indoor and outdoor joints of a building, comprising a sheath pipe, an outer sealing cover body, a main line, a support sleeve, a clamp body, an inner sealing mechanism and an electrical box; the main line is arranged inside the sheath pipe, the outer end of the sheath pipe is installed with an outer sealing cover body, the outer sealing cover body is respectively sealed with the inner and outer side walls of the sheath pipe and the main line, the other side of the sheath pipe is arranged indoors, the other side of the sheath pipe is sleeved with a support sleeve, the support sleeve is fixed on the outer side wall of the sheath pipe through the clamp body, the inner end of the sheath pipe is installed with an inner sealing mechanism, one end of the main line is connected with the electrical box, and the electrical box is installed indoors.

[0009] As a preferred embodiment, the outer sealing cover body includes an outer sealing body, an inner sealing body, an outer sealing ring body, and an inner sealing ring body; the inner sealing body is integrally connected to the interior of the outer sealing body, and several outer sealing ring bodies are integrally connected to the outer wall of the inner sealing body; an inner sealing hole body is opened at the center position of the outer sealing body and the inner sealing body, and an inner sealing ring body is integrally connected to the inner wall of the inner sealing hole body.

[0010] As a preferred solution, the support sleeve includes an outer support body and a fixing sleeve; the upper and lower ends of the outer support body are connected to the fixing sleeve, and the fixing sleeve and the outer support body are provided with connecting hole grooves inside.

[0011] As a preferred embodiment, the internal sealing mechanism includes a sealing rubber body, a lower ring body, a connecting screw, an upper ring body, a supporting bracket, and an upper dust cover body; the lower ring body is arranged on the inner lower side of the sealing rubber body, and the upper end face of the lower ring body is evenly connected with several connecting screws, the upper end of the sealing rubber body is installed with the upper ring body, the upper side of the connecting screw is passed through the hole of the upper ring body and is connected by a nut, and the supporting bracket is symmetrically installed at the edge of the upper end face of the upper ring body, and the upper dust cover body is installed on the bracket.

[0012] As a preferred solution, a through threading hole is provided in the inner middle of the sealing rubber body, and a hole groove is provided at the center of the lower ring body and the upper ring body, and the diameter of the hole groove is 2-6 cm larger than the diameter of the threading hole.

[0013] As a preferred solution, the support bracket is an inverted L-shaped frame.

[0014] As a preferred embodiment, the upper dust cover body is a split cover body, including a left cover body, a right cover body, a plug-in block, and a limit ring; plug-in blocks are installed on the inner upper side wall of the left cover body and the inner lower side wall of the right cover body, and concave plug-in grooves are opened on the inner lower side wall of the left cover body and the inner upper side wall of the right cover body. The plug-in blocks of the left cover body and the right cover body are plugged into the plug-in grooves of the right cover body and the left cover body, and limit rings are installed on the bottom of the left cover body and the right cover body.

[0015] As a preferred solution, a guide head is provided at the front end of the plug-in block.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model can realize the process of double-position sealing and burying cables at the connection parts of indoor and outdoor buildings through the cooperation between the sheath tube, the outer sealing cover, the main line, the support sleeve, the clamp body, the inner sealing mechanism and the electrical box, which is conducive to standardizing and unifying the operating steps of sealing and protection of buried cables, reducing the requirements of buried cables for underground space and terrain, and can be adapted to old residential areas or other working conditions with complex underground burial conditions, improving the self-protection performance of concealed underground lines and improving the safety performance of subsequent continuous and durable use. The specific advantages are:

[0018] 1. An external sealing cover is used to seal the outside of the protective tube, which can achieve a synchronous sealing effect on the protective tube and the main line, reduce the probability of water droplets, water flow fluids, insect bodies and other debris entering the protective tube, break the formation conditions of condensed water droplets at the end of the main line, ensure that the indoor and outdoor ends of the main line are in a safe state for a long time, extend the normal and effective use performance of the main line, and improve the self-protection performance in different underground environments.

[0019] 2. The support sleeve is used to support the sheath pipe, which can prevent the sheath pipe from being deformed during indoor pouring, effectively protect the basic shape and setting position of the sheath pipe, and is conducive to standardizing the uniform quality of buried cables to meet specific design requirements.

[0020] 3. An internal sealing mechanism is used to achieve internal sealing at the other end of the sheath pipe, so that indoor water is not easy to enter the sheath pipe. At the same time, a dust cover is used to prevent dust, improve its own dustproof performance, and help standardize the stable burial quality of the buried line connection position between the indoor and outdoor of the building.

[0021] The utility model is conducive to standardized processing of cable burying operations under working conditions with complex underground conditions, and is particularly suitable for old residential areas or other areas around buildings with complex underground conditions, reducing the difficulty of line reconstruction and facilitating standardized operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] For ease of explanation, the present invention is described in detail by the following specific embodiments and drawings.

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the external sealing cover of the utility model;

[0025] Figure 3 for Figure 2 Bottom view of

[0026] Figure 4 It is a structural schematic diagram of the support sleeve in the utility model;

[0027] Figure 5 It is a cross-sectional view of the clamp body in the utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the upper ring body and the supporting bracket in the utility model;

[0029] Figure 7 It is a structural schematic diagram of the upper dustproof cover body in the utility model.

[0030] In the figure: 1-sheath tube; 2-external sealing cover; 3-main line; 4-support sleeve; 5-clamp body; 6-internal sealing mechanism; 7-electrical box;

[0031] 2-1-outer sealing body; 2-2-inner sealing body; 2-3-outer sealing ring body; 2-4-inner sealing ring body;

[0032] 4-1-external support body; 4-2-fixing sleeve; 4-3-through hole slot;

[0033] 6-1-sealing rubber body; 6-2-lower ring body; 6-3-connecting screw; 6-4-upper ring body; 6-5-support bracket; 6-6-upper dust cover body;

[0034] 6-61-left cover body; 6-62-right cover body; 6-63-plug-in block; 6-64-plug-in slot; 6-65-limiting ring. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in the utility model, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that can be produced by the utility model and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0036] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0037] like Figures 1 to 7 As shown, this specific embodiment adopts an outer sealing cover body to achieve the sealing of the outside of the sheath pipe, so that the outside of the sheath pipe is not easy to enter water and flying insects, and specifically adopts the following technical scheme: comprising a sheath pipe 1, an outer sealing cover body 2, and a main line 3; the sheath pipe 1 is provided with the main line 3 inside, and the sheath pipe 1 can achieve the protection of the main line 3, and the outer end of the sheath pipe 1 is installed with the outer sealing cover body 2, and the outer sealing cover body 2 is respectively sealed with the inner and outer side walls of the sheath pipe 1 and the main line 3, as shown in FIG. Figure 2 , Figure 3As shown, the outer sealing cover body 2 includes an outer sealing body 2-1, an inner sealing body 2-2, an outer sealing ring body 2-3, and an inner sealing ring body 2-4; the inner sealing body 2-1 is integrally connected with the inner sealing body 2-2, the outer sealing body 2-1 can realize the external sealing of the sheath tube 1, and the outer side wall of the inner sealing body 2-2 is integrally connected with several outer sealing ring bodies 2-3, the inner sealing body 2-2 can realize the inner side wall sealing of the sheath tube 1, and the outer sealing ring body 2-3 can realize the inner side wall sealing, an inner sealing hole body is opened at the center position of the outer sealing body 2-1 and the inner sealing body 2-2, and the inner side wall of the inner sealing hole body is integrally connected with the inner sealing ring body 2-4, the inner sealing hole body can realize the penetration of the main line 3, and the sealing with the main line 3 is realized through the inner sealing ring body 2-4.

[0038] like Figure 1 As shown, in this specific embodiment, the support sleeve is used to support the other side of the casing pipe, so that the casing pipe is not easily deformed during indoor pouring. The following technical scheme is specifically adopted: including a support sleeve 4 and a clamp body 5; the other side of the casing pipe 1 is sleeved with a support sleeve 4, and the support sleeve 4 is fixed to the outer wall of the casing pipe 1 through the clamp body 5. The support sleeve 4 can support the casing pipe 1, so that the casing pipe 1 is not easily deformed, and the clamp body 5 can fix the support sleeve 4, as shown in FIG. Figure 4 As shown, the support sleeve 4 includes an outer support body 4-1 and a fixed sleeve 4-2; the upper and lower ends of the outer support body 4-1 are connected with the fixed sleeve 4-2, the fixed sleeve 4-2 can realize the upper and lower support of the sheath tube 1, and the outer support body 4-1 can improve the overall strength, and the fixed sleeve 4-2 and the outer support body 4-1 are both provided with through-hole grooves 4-3 inside, and the through-hole grooves 4-3 can realize the insertion of the sheath tube 1, so as to facilitate the fixation of the sheath tube 1.

[0039] like Figure 1 As shown, in this specific embodiment, the inner sealing mechanism is used to achieve the inner sealing of the sheath pipe, so that indoor water and insects are not easy to enter the sheath pipe. The following technical scheme is specifically adopted: including an inner sealing mechanism 6 and an electrical box 7; the other side of the sheath pipe 1 is arranged indoors, and the inner end of the sheath pipe 1 is installed with an inner sealing mechanism 6, which can achieve the sealing and dustproof of the inside of the sheath pipe 1, and one end of the main line 3 is connected to the electrical box 7, and the electrical box 7 is installed indoors; as shown in FIG. Figure 5 , Figure 6As shown, the inner sealing mechanism 6 includes a sealing rubber body 6-1, a lower ring body 6-2, a connecting screw 6-3, an upper ring body 6-4, a support bracket 6-5, and an upper dust cover body 6-6; the lower ring body 6-2 is arranged on the inner lower side of the sealing rubber body 6-1, and the upper end surface of the lower ring body 6-2 is evenly connected with several connecting screws 6-3, and the upper end of the sealing rubber body 6-1 is installed with an upper ring body 6-4, and the upper side of the connecting screw 6-3 is connected through the hole of the upper ring body 6-4 and connected by a nut. When the nut is locked, the upper ring body 6-4 and the lower ring body 6-2 are squeezed against each other, and the sealing rubber body 6-1 can be squeezed and deformed, which is convenient for sealing. The upper end surface edge of the upper ring body 6-4 is symmetrically installed with a support bracket 6-5, which supports The bracket 6-5 can be supported on the sheath tube 1, and its sealing rubber body 6-1 is arranged in the sheath tube 1. An upper dust cover body 6-6 is installed on the support bracket 6-5, and the upper dust cover body 6-6 can realize dustproof; a through threading hole is opened in the inner middle part of the sealing rubber body 6-1, and a hole groove body is opened at the center position of the lower ring body 6-2 and the upper ring body 6-4. The diameter of the hole groove body is 2-6cm larger than the diameter of the threading hole. The threading hole can be deformed and sealed with the main line when the lower ring body 6-2 and the upper ring body 6-4 are squeezed against each other, and the outer side of the sealing rubber body 6-1 is deformed and sealed with the inner side wall of the sheath tube 1; the support bracket 6-5 is an inverted L-shaped bracket, and the support bracket 6-5 can be supported on the upper end face of the sheath tube 1; such as Figure 7 As shown, the upper dust cover body 6-6 is a split cover body, including a left cover body 6-61, a right cover body 6-62, a plug-in block 6-63, and a limit ring 6-65; the plug-in blocks 6-63 are installed on the inner upper side wall of the left cover body 6-61 and the inner lower side wall of the right cover body 6-62, and the inner lower side wall of the left cover body 6-61 and the inner upper side wall of the right cover body 6-62 are provided with concave plug-in grooves 6-64, and the plug-in blocks of the left cover body 6-61 and the right cover body 6-62 are plugged into the right cover body 6-62, in the plug-in slot 6-64 of the left cover body 6-61, the installation is achieved by left-right plug-in. A guide head is provided at the front end of the plug-in block 6-63, and the guide head can provide guidance during plug-in, so as to facilitate quick plug-in. Limiting rings 6-65 are installed at the bottom of the left cover body 6-61 and the right cover body 6-62, and the limiting rings 6-65 can be limited so that the limiting rings 6-65 are set between the two supporting brackets 6-5, so as to facilitate quick dust prevention.

[0040] The working principle of this specific implementation is:

[0041] When in use, it is necessary to dig a groove outdoors and indoors, place the sheath pipe 1 in the groove, lay it from outdoors to indoors, then pass the main line 3 through the inner hole of the outer sealing cover 2 and out of the sheath pipe 1, install the sealing cover 2 at the end of the sheath pipe 1 outdoors, apply sealant at the contact point between the outer sealing cover 2 and the sheath pipe 1, then bury and compact the sheath pipe 1, and then sleeve the support sleeve 4 on the end of the sheath pipe 1 indoors, and fix the support sleeve 4 through the clamp body 5, so that when the indoor is poured, the shape of the sheath pipe 1 is stable in position during the entire pouring process with the cooperation of the support sleeve 4 and the clamp body 5, and the shape does not undergo extrusion deformation. When the indoor position is poured, the inner sealing mechanism 6 is installed Installed inside the sheath tube 1, during installation, the sealing rubber body 6-1 is placed inside the sheath tube 1, supported on the sheath tube 1 by the support bracket 6-5, and then the nut on the connecting screw 6-3 is locked, so that the lower ring body 6-2 and the upper ring body 6-4 make a relatively close movement, so that the sealing rubber body 6-1 is squeezed and deformed, and the sealing rubber body 6-1 is used to achieve sealing with the inner wall of the sheath tube 1 and the main line 3. After the sealing is completed, the upper dust cover body 6-6 can be covered, and the left cover body 6-61 and the right cover body 6-62 of the upper dust cover body 6-6 are respectively plugged in from the left side of the main line 3 and the right side of the main line 3, and then the limit ring 6-65 is clamped between the two support brackets 6-5, and the whole installation process is completed at this time.

Claims

1. A double-sealed joint embedded part for indoor and outdoor joints of a building, characterized in that: The invention comprises a sheath tube (1), an outer sealing cover (2), a main line (3), a support sleeve (4), a clamp body (5), an inner sealing mechanism (6), and an electrical box (7); the main line (3) is arranged inside the sheath tube (1); the outer end of the sheath tube (1) is installed with the outer sealing cover (2); the outer sealing cover (2) is respectively sealed with the inner and outer walls of the sheath tube (1) and the main line (3); the other side of the sheath tube (1) is arranged indoors; the other side of the sheath tube (1) is sleeved with the support sleeve (4); the support sleeve (4) is fixed to the outer wall of the sheath tube (1) through the clamp body (5); the inner end of the sheath tube (1) is installed with the inner sealing mechanism (6); one end of the main line (3) is connected to the electrical box (7); and the electrical box (7) is installed indoors.

2. The double-sealed joint embedded part for indoor and outdoor joints of a building according to claim 1, characterized in that: The outer sealing cover body (2) comprises an outer sealing body (2-1), an inner sealing body (2-2), an outer sealing ring body (2-3), and an inner sealing ring body (2-4); the inner sealing body (2-2) is integrally connected to the interior of the outer sealing body (2-1); a plurality of outer sealing ring bodies (2-3) are integrally connected to the outer side wall of the inner sealing body (2-2); an inner sealing hole body is provided at the center of the outer sealing body (2-1) and the inner sealing body (2-2); and the inner sealing ring body (2-4) is integrally connected to the inner side wall of the inner sealing hole body.

3. The double-sealed joint embedded part for indoor and outdoor joints of a building according to claim 1, characterized in that: The support sleeve (4) comprises an outer support body (4-1) and a fixing sleeve (4-2); the upper and lower ends of the outer support body (4-1) are connected to the fixing sleeve (4-2), and the fixing sleeve (4-2) and the outer support body (4-1) are provided with connecting hole grooves (4-3) inside.

4. The double-sealed joint embedded part for indoor and outdoor joints of a building according to claim 1, characterized in that: The inner sealing mechanism (6) comprises a sealing rubber body (6-1), a lower ring body (6-2), a connecting screw (6-3), an upper ring body (6-4), a supporting bracket (6-5), and an upper dust cover (6-6); the lower ring body (6-2) is arranged on the inner lower side of the sealing rubber body (6-1); the upper end surface of the lower ring body (6-2) is evenly connected to a plurality of connecting screws (6-3); the upper end of the sealing rubber body (6-1) is mounted with an upper ring body (6-4); the upper side of the connecting screw (6-3) is inserted into a hole of the upper ring body (6-4) and connected via a nut; the supporting bracket (6-5) is symmetrically mounted at the edge of the upper end surface of the upper ring body (6-4); and the upper dust cover (6-6) is mounted on the supporting bracket (6-5).

5. The double-sealed joint embedded part for indoor and outdoor joints of a building according to claim 4, characterized in that: A through threading hole is provided in the middle of the sealing rubber body (6-1), and a hole groove is provided at the center of the lower ring body (6-2) and the upper ring body (6-4). The diameter of the hole groove is 2-6 cm larger than the diameter of the threading hole.

6. The double-sealed joint embedded part for indoor and outdoor joints of a building according to claim 4, characterized in that: The supporting bracket (6-5) is an inverted L-shaped frame.

7. The double-sealed joint embedded part for indoor and outdoor joints of a building according to claim 4, characterized in that: The upper dustproof cover body (6-6) is a split cover body, comprising a left cover body (6-61), a right cover body (6-62), a plug-in block (6-63), and a limit ring (6-65); the plug-in block (6-63) is installed on the inner upper side wall of the left cover body (6-61) and the inner lower side wall of the right cover body (6-62); the inner lower side wall of the left cover body (6-61) and the inner upper side wall of the right cover body (6-62) are provided with a concave plug-in groove (6-64); the plug-in blocks of the left cover body (6-61) and the right cover body (6-62) are plugged into the plug-in grooves (6-64) of the right cover body (6-62) and the left cover body (6-61); and the limit ring (6-65) is installed on the bottom of the left cover body (6-61) and the right cover body (6-62).

8. The double-sealed joint embedded part for indoor and outdoor joints of a building according to claim 7, characterized in that: A guide head is provided at the front end of the plug-in block (6-63).

Images