CN110829313A - Embedded sealing sleeve for cable passing through wall and manufacturing method thereof - Google Patents

Abstract

The invention relates to the field of construction technology, in particular to an embedded sealing sleeve for cables passing through walls, comprising a glass fiber reinforced plastic sleeve, a water stop ring, a linoleum silk fireproof cotton filling layer, a fireproof cement filling layer, and a ring for adding a fireproof agent Oxygen resin and protective cap, the water stop ring is fixed on the outside of the glass fiber reinforced plastic casing and divided into an inner water stop ring and an outer water stop ring, the glass fiber reinforced plastic casing and the inner water stop ring are pre-buried in the wall, The outer water stop ring is located on the outer side of the wall and there is a glue groove therebetween. The two ends of the glass fiber reinforced plastic sleeve are connected with the protective cap through threads. The side is filled with the oil hemp silk fireproof cotton filling layer, the fireproof glue filling layer, and the epoxy resin added with fireproofing agent. With the embedded design, the concrete wall can be pre-set during the construction process, forming at one time and easy to install.

Description

Embedded sealing sleeve for cable passing through wall and manufacturing method thereof

technical field

The invention relates to the technical field of construction, in particular to an embedded sealing sleeve for cables passing through walls and a manufacturing method thereof.

Background technique

With the rapid increase in the application ratio of cables in power grid construction, the construction technology related to cables needs to be improved urgently. At present, the plugging method used in the construction process is not standardized and unscientific, which can easily cause leakage, and then cause quality problems, which affects the safe and stable operation of cables, and even affects the structural stability of substations.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the above-mentioned technologies, and to provide a method for manufacturing an embedded sealing sleeve for cable penetrating walls.

In order to achieve the above purpose, the present invention adopts the following technical solutions: an embedded sealing sleeve for cables passing through walls, characterized in that it includes a glass fiber reinforced plastic sleeve, a water stop ring, a linoleum silk fireproof cotton filling layer, and a fireproof cement filling layer. layer, epoxy resin with fire retardant and protective cap, the water stop ring is fixed on the outside of the glass fiber reinforced plastic sleeve and divided into an inner water stop ring and an outer water stop ring, the glass fiber reinforced plastic sleeve and the inner water stop ring It is pre-embedded in the wall, the outer water stop ring is located on the outside of the wall and there is a glue groove therebetween. The middle side between the cable and the cable is filled with the oil hemp silk fireproof cotton filling layer, the fireproof glue filling layer, and the epoxy resin added with fireproofing agent.

Preferably, the part of the epoxy resin outside the casing is sloped to form a conical outcrop.

Preferably, the protective cap is provided with a round hole in the center, and an operation hole is arranged around it, and an inflatable waterstop is arranged around the round hole, and the inflatable waterstop is matched with the epoxy resin.

Preferably, the glue tank is filled with epoxy resin with fire retardant.

A method for making an embedded sealing sleeve for cables passing through walls, which is characterized by comprising the following steps. In step 1, the FRP sleeve is processed according to drawings to ensure that the FRP sleeve is complete and free from deformation, blisters, cracks and the like. The casing is embedded and pre-buried during the construction of the concrete wall;

Step 2. Do straightening and fixing when the cable is constructed through the wall, and clean the casing before filling to ensure that there is no impurity and contamination. For the filling, first fill the middle (80-100mm) with oil hemp silk fireproof cotton, outwards Continue to fill the fireproof cement (50mm at both ends), and fill the rest with epoxy resin to the outside of the casing and make a slope treatment, which looks like a conical exposed head;

Step 3: Wrap the exposed head and the cable with waterproof tape, tighten the protective cap and the casing, and wrap the oil hemp wire around the thread to ensure airtightness.

Step 4. After the protective cap is installed, fill the sealing groove with epoxy resin (adding fire-resistant agent) to ensure complete filling and enhance the fit with the wall.

The beneficial effects of the present invention are as follows: (1) by adopting the embedded design, the presetting can be completed during the construction of the concrete wall, forming at one time, and the installation is convenient.

(2) The sealing sleeve is provided with two water-stop rings to enhance the tightness of the combination with the wall and enhance the blocking effect.

(3) The sealing groove is provided to further enhance the sealing between the casing and the wall.

(4) The sealing sleeve has fireproof function, two layers of fireproof fillers, and fireproof reagents are added to epoxy resin, which can effectively avoid potential safety hazards.

(5) The protective cap protects the casing and its filler, resists external physical impact, and has both waterproof and fireproof properties.

Description of drawings

Fig. 1 is the structural representation of the present invention;

FIG. 2 is a schematic view of the structure of the protective cap in the present invention.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. As shown in Figure 1-2, an embedded sealing sleeve for cables passing through the wall includes a glass fiber reinforced plastic sleeve 1, a water stop ring, an oil hemp silk fireproof cotton filling layer 2, a fireproof cement filling layer 3, and a fireproof agent added. The epoxy resin 4 and the protective cap 5, the water stop ring is fixed on the outside of the glass fiber reinforced plastic sleeve and is divided into an inner water stop ring 6 and an outer water stop ring 7, the glass fiber reinforced plastic sleeve and the inner water stop ring are pre- Buried in the wall body 8, the outer water stop ring is located on the outside of the wall body and is provided with a glue groove 9 therebetween. The middle side between the inside and the cable is filled with the oil hemp silk fireproof cotton filling layer, the fireproof glue filling layer, and the epoxy resin added with fireproofing agent. The part of the epoxy resin outside the casing is sloped to form a conical outcrop. The protective cap is provided with a circular hole in the center, an operation hole 10 is arranged around the circular hole, and an inflatable waterstop 11 is arranged around the circular hole, and the inflatable waterstop is matched with the epoxy resin. The glue tank is filled with epoxy resin with fire retardant. The embedded water-tight casing of this study is designed for the construction of cables with voltage levels of 35kV and above through the wall, and the holes through the wall are not sufficiently sealed and waterproof. Through the embedded design of the sealing sleeve, it can be closely combined with the wall. The filling technology in the sleeve can ensure that the cable and the sleeve are combined more closely, and the good airtightness can effectively solve the leakage problem. Function.

Working principle: (1) The FRP casing is processed according to the drawings. It is recommended to use FRP material to ensure that the pipe body is complete without deformation, blisters, cracks, etc. The pipe body is embedded and pre-buried during the construction of the concrete wall.

(2) The wall thickness is considered to be 300mm, and the cables should be straightened and fixed during the construction of the wall, and the casing should be cleaned before filling to ensure that there are no impurities and contamination. (80-100mm), continue to fill the fireproof cement outwards (50mm at each end), and the rest is filled with epoxy resin to the outside of the casing and sloped, like a conical exposed head. The filling type adopts a wrap-around slow filling to ensure complete filling without gaps and voids.

(3) Wrap the exposed head and the cable with waterproof tape, tighten the protective cap and the casing, and wrap the oil hemp wire around the thread to ensure airtightness.

(4) After the protective cap is installed, fill the sealing groove with epoxy resin (add fireproof agent) to ensure complete filling and enhance the fit with the wall.

(5) If necessary, the protective cap and the leakage part can be wrapped with fireproof tape.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (5)

1. An embedded sealing sleeve for a cable through-wall is characterized in that: including glass steel sleeve, seal ring, oily numb silk fireproof cotton filling layer, fire prevention daub filling layer, add the epoxy and the protective cap of fire retardant, the seal ring is fixed glass steel sleeve's outside is divided into inside seal ring and outside seal ring, glass steel sleeve and inside seal ring are pre-buried in the wall body, outside seal ring be located the wall body the outside and rather than between be equipped with the gluey groove, the both ends of glass steel sleeve pass through the screw thread with protective cap threaded connection, fill from middle one side between the inside of glass steel sleeve and the cable have oily numb silk fireproof cotton filling layer, fire prevention daub filling layer, the epoxy of adding the fire retardant.

2. The method of claim 1, wherein the epoxy resin is graded on the outer portion of the sleeve to form a tapered outcrop.

3. The method for manufacturing the embedded sealing sleeve for the cable wall penetration according to claim 1, wherein a round hole is formed in the center of the protective cap, an operation hole is formed in the periphery of the round hole, an expansion type water stop is arranged on the periphery of the round hole, and the expansion type water stop is matched with the epoxy resin.

4. The method for manufacturing the embedded sealing sleeve for the cable wall penetration according to claim 1, wherein the glue groove is filled with epoxy resin with a fire retardant.

5. A manufacturing method of an embedded sealing sleeve for a cable wall, which is characterized by comprising the following steps: the method comprises the following steps that firstly, the glass fiber reinforced plastic sleeve is processed according to a drawing, the glass fiber reinforced plastic sleeve is ensured to be complete and free of deformation, sand holes, cracks and the like, and embedded pre-embedding is completed in the concrete wall construction process;

straightening and fixing are well performed during cable wall penetrating construction, cleaning work of a sleeve is well performed before filling, impurity and dirt are avoided, the middle part (80-100mm) is filled with hemp fiber fireproof cotton in the aspect of filling, fireproof daub (50 mm at each end) is continuously filled outwards, epoxy resin is filled in the rest part to the outside of the sleeve, gradient treatment is performed, and the shape of the sleeve is similar to a conical exposed head;

and step three, wrapping the exposed head and the cable by using a waterproof adhesive tape, screwing the protective cap and the sleeve, and winding the hemp thread at the thread part to ensure the tightness.

And step four, after the protective cap is installed, filling the glue sealing groove with epoxy resin (added with a fireproof reagent), ensuring complete filling and enhancing the degree of adhesion with the wall body.

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