Compression-resistant MPP electric power sheath tube

Abstract

The utility model discloses a compression-resistant MPP electric power sheath tube, comprising an inner sheath layer and an outer sheath layer, the inner sheath layer is a polytetrafluoroethylene tube, and the outer sheath layer is a polyvinyl chloride tube; the outer side of the inner sheath layer is provided with a reinforcing layer, the outer side of the reinforcing layer is sleeved with a buffer layer, the outer side of the buffer layer is provided with a shielding layer, and the outer side of the shielding layer is provided with an outer sheath layer. The shielding layer is arranged, the shielding layer is a Teflon shielding layer, interference of electromagnetism to power transmission is reduced, the buffer layer is arranged, the buffer layer is composed of a plurality of arc-shaped plates, when the outer sheath layer is subjected to external pressure, the arc-shaped plates are deformed, the inner sheath layer cannot be damaged within a certain pressure range, and the service life of the cable is prolonged. Therefore, the cable in the inner sheath layer is effectively prevented from being damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power sheath pipes, in particular to a pressure-resistant MPP electric power sheath pipe. Background Art

[0002] MPP pipe, also known as MPP power cable protection pipe, is divided into trench type and trenchless type. MPP trenchless pipe, also known as MPP jacking pipe or dragging pipe, has the characteristics of high temperature resistance and external pressure resistance. It is suitable for medium and low voltage transmission line cable conduit below 10KV and can be widely used in municipal, telecommunications, electricity, gas, tap water, heat and other pipeline projects.

[0003] Most of the existing MPP power cable protection pipes are one-piece structures, usually consisting of an outer protective layer and an inner protective layer. Since the inner and outer protective layers are hard connected, when the external pressure is too large, the outer and inner protective layers will act together, thereby damaging the inner protective layer and causing poor pressure resistance. Based on this, a pressure-resistant MPP power sheath pipe is proposed. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides a pressure-resistant MPP power sheath pipe. By setting a reinforcement layer, and the reinforcement layer is a glass fiber braided sleeve, the pressure resistance of the inner sheath layer can be increased. By setting a shielding layer, and the shielding layer is a Teflon shielding layer, the interference caused by electromagnetic radiation on power transmission is reduced. By setting a buffer layer, and the buffer layer is composed of a number of arc-shaped plates, when the outer sheath layer is subjected to external pressure, the arc-shaped plates are deformed. Within a certain pressure range, the inner sheath layer will not be damaged, thereby effectively avoiding damage to the cable in the inner sheath layer.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A pressure-resistant MPP power sheath pipe comprises an inner sheath layer and an outer sheath layer, wherein the inner sheath layer is a polytetrafluoroethylene tube, and the outer sheath layer is a polyvinyl chloride tube; a reinforcing layer is provided on the outer side of the inner sheath layer, a buffer layer is sleeved on the outer side of the reinforcing layer, a shielding layer is provided on the outer side of the buffer layer, and an outer sheath layer is provided on the outer side of the shielding layer, the reinforcing layer is a glass fiber braided sleeve, and the shielding layer is a Teflon shielding layer; the buffer layer is composed of a plurality of arcuate plates, and the arcuate surface of the arcuate plate is attached to the inner side of the shielding layer; by providing the reinforcing layer, and the reinforcing layer is a glass fiber braided sleeve, the pressure resistance of the inner sheath layer can be increased; by providing the shielding layer, and the shielding layer is a Teflon shielding layer, the interference caused by electromagnetic radiation on power transmission is reduced; by providing the buffer layer, and the buffer layer is composed of a plurality of arcuate plates, when the outer sheath layer is subjected to external pressure, the arcuate plates are deformed, and within a certain pressure range, the inner sheath layer will not be damaged, thereby effectively preventing damage to the cable in the inner sheath layer.

[0007] Further, the head and tail of the arc-shaped plate are sequentially connected, which can effectively avoid displacement of the arc-shaped plate and improve the use stability.

[0008] Compared with the prior art, the utility model has the advantages that: through setting the reinforcing layer, and the reinforcing layer is glass fiber woven cover, can increase the compression resistance of the inner sheath layer, through setting the shielding layer, and the shielding layer is iron fluorine dragon shielding layer, reduces the interference caused by electromagnetic to power transmission, through setting the buffer layer, and the buffer layer is constituted by several arc-shaped plates, when the outer sheath layer is subjected to external pressure, make the arc-shaped plate deformation, in certain pressure range, will not cause damage to the inner sheath layer, thereby effectively avoid the cable in the inner sheath layer damage, the head and tail of the arc-shaped plate are sequentially connected, which can effectively avoid displacement of the arc-shaped plate and improve the use stability. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model.

[0010] In the drawing: 1 inner sheath layer, 2 outer sheath layer, 3 reinforcing layer, 4 shielding layer, 5 buffer layer. DETAILED DESCRIPTION

[0011] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0012] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model. EMBODIMENT

[0013] Referring to the drawings Figure 1As shown, a kind of anti-pressure MPP power sheath pipe, including inner sheath layer 1 and outer sheath layer 2, inner sheath layer 1 is polytetrafluoroethylene pipe, outer sheath layer 2 is polyvinyl chloride pipe;The outside of inner sheath layer 1 is provided with reinforcing layer 3, reinforcing layer 3 outside is sleeved with buffer layer 5, the outside of buffer layer 5 is provided with shielding layer 4, the outside of shielding layer 4 is provided with outer sheath layer 2, reinforcing layer 3 is glass fiber braided cover, shielding layer 4 is Teflon shielding layer, buffer layer 5 is made of several arc plates, the arc surface of arc plate is attached to the inside of shielding layer 4, by setting reinforcing layer 3, and reinforcing layer 3 is glass fiber braided cover, the pressure resistance of inner sheath layer 1 can be increased, by setting shielding layer 4, and shielding layer 4 is Teflon shielding layer, reduce the interference caused by electromagnetic to power transmission, by setting buffer layer 5, and buffer layer 5 is made of several arc plates, when outer sheath layer 2 is subjected to external pressure, make arc plate deformation, within certain pressure range, will not cause damage to inner sheath layer 1, so as to effectively avoid the cable in inner sheath layer 1 damage.

[0014] The head and tail of the arc plate are sequentially connected, which can effectively prevent the displacement of the arc plate and improve the use stability.

[0015] Working principle: by setting reinforcing layer 3, and reinforcing layer 3 is glass fiber braided cover, the pressure resistance of inner sheath layer 1 can be increased, by setting shielding layer 4, and shielding layer 4 is Teflon shielding layer, reduce the interference caused by electromagnetic to power transmission, by setting buffer layer 5, and buffer layer 5 is made of several arc plates, when outer sheath layer 2 is subjected to external pressure, make arc plate deformation, within certain pressure range, will not cause damage to inner sheath layer 1, so as to effectively avoid the cable in inner sheath layer 1 damage, the head and tail of the arc plate are sequentially connected, which can effectively prevent the displacement of the arc plate and improve the use stability.

[0016] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model, and any figure reference in the claims should not be regarded as limiting the claims involved.

[0017] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A compressive MPP power sheathed pipe, comprising an inner sheath layer and an outer sheath layer, wherein the inner sheath layer is a polytetrafluoroethylene tube and the outer sheath layer is a polyvinyl chloride tube, characterized in that: A reinforcement layer is provided on the outside of the inner sheath layer, a buffer layer is sleeved on the outside of the reinforcement layer, a shielding layer is provided on the outside of the buffer layer, an outer sheath layer is provided on the outside of the shielding layer, the reinforcement layer is a glass fiber braided sleeve, the shielding layer is a Teflon shielding layer, and the buffer layer is composed of several arc-shaped plates, and the arc-shaped surfaces of the arc-shaped plates are attached to the inner side of the shielding layer.

2. The compression-resistant MPP power sheath pipe according to claim 1, characterized in that: The ends of the arc-shaped plates are connected in sequence.

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