WO2018076499A1

WO2018076499A1 - Pipe segment connecting component suitable for comprehensive bamboo composite pipe gallery

Info

Publication number: WO2018076499A1
Application number: PCT/CN2016/110310
Authority: WO
Inventors: 叶柃; 殷建学; 赵柱石
Original assignee: 浙江鑫宙竹基复合材料科技有限公司; 叶柃
Priority date: 2016-10-31
Filing date: 2016-12-16
Publication date: 2018-05-03
Also published as: CN108018871B; CN108018871A

Abstract

A pipe segment connecting component for a comprehensive bamboo composite pipe gallery. The pipe segment connecting component is integrally embedded into an annular insertion opening at each end part of adjacent two pipe segments in a pipe gallery, and the cross section of a coupling part of the connecting component is a wedge-shaped structure; the wedge-shaped structure is constituted of a horizontally extended flat upper surface, a left side surface and a right side surface that vertically extend and are parallel to each other, and a ridge-shaped lower surface that is left-right symmetric; two sides of the ridge-shaped lower surface each have a slope gradient of 5-10 degrees along a center line.

Description

Pipe joint connector suitable for bamboo composite integrated pipe gallery

[Technical field]

The invention belongs to the related field of pipe supporting equipment, and more particularly to a pipe connecting piece suitable for a bamboo composite integrated pipe gallery.

[Background technique]

The integrated pipe gallery is a public tunnel that is laid underground in the city for centralized laying of municipal lines such as electricity, communications, water, drainage, heat and gas. China is in the period of rapid development of urbanization progress, but in contrast, underground infrastructure construction is seriously lagging behind. In 2013, the State Council issued the “Opinions on Strengthening Urban Infrastructure Construction” (Guo Fa (2013) No. 36), which first proposed to launch a pilot project for urban underground integrated pipe corridors, and launched a comprehensive underground in many large and medium-sized cities across the country. Integrated pipe gallery pilot project.

In the prior art, reinforced concrete is often used to prepare the pipe porch, but the structure has poor anti-leakage and earthquake resistance, and the construction engineering volume is large, the cost is high, and the construction period is long, so it is difficult to adapt to the requirements of modern city construction. In view of this, the inventors of the present application have proposed a prefabricated bamboo composite pipe gallery using bamboo fiber as a main reinforcing material, a resin as a binder, and a winding method, which is not only available in CN201510565472.6 and the like. The multi-type pipes including the input pipe, the water distribution pipe, the regenerative water pipe, the power cable, the communication cable, etc. are uniformly arranged in the gallery, and the characteristics of the axial tensile and bending strength of the bamboo are fully utilized, correspondingly in the pipe The distribution of stress-free defects is formed in the corridor structure, so that the product meets the bearing requirements.

With the promotion and practical application of bamboo composite pipe gallery in many domestic industries and projects, further research shows that since the prefabricated pipe gallery is assembled by multiple prefabricated straight pipes, how to quickly and conveniently execute the prefabricated straight pipe sections Inter-connectivity and effective sealing between the two are becoming one of the key technical issues that need to be addressed in this field. The search found that CN20161061389.2 proposed a structure that uses a mortise to match the wedge, and preset a waterproof gasket between the contact faces; CN20161054494.0 proposes a method for welding a connecting piece and a pre-embedded part by means of welding, and CN20161008215.0 proposes a method for inserting a pull-and-pull connecting piece into an adjacent piece to reserve a lifting point; however, the above The prior art is designed for the connection of pipe joints of reinforced concrete structures. It is usually necessary to perform welding or the like or it is necessary to process the embedded parts of the pipe sections, which not only easily increases the complexity and difficulty of the overall construction, but also greatly reduces the complexity. Construction efficiency, and in actual use often can not provide good pipe sealing performance.

[Summary of the Invention]

In view of the above deficiencies or improvement requirements of the prior art, the present invention provides a pipe joint connector suitable for a bamboo composite integrated pipe gallery, wherein the pipe joint connector is correspondingly considered by comprehensively considering the structure and application characteristics of the bamboo composite integrated pipe gallery. In the aspects of its structural shape, setting method, reinforcement means and key structural parameters, the design shows that it can better complete the mutual reliable connection between the multiple straight pipes of the bamboo composite integrated pipe gallery, and has the sealing property. It has the advantages of good stability, long service life and easy construction and installation.

In order to achieve the above object, according to the present invention, a pipe joint connecting member suitable for a bamboo composite integrated pipe gallery is provided, characterized in that the pipe joint connecting member is integrally fitted and installed at each end of the adjacent two pipe trunk pipe segments. At the annular socket, and the cross-section of the joint portion is a wedge-shaped structure; the wedge-shaped structure consists of a horizontally extending flat upper surface, vertically extending and parallel sides of the left and right sides, and a left and right symmetrical lower surface The composition is common, and the ridge-shaped lower surface has a slope of 5° to 10° along both sides of the center line.

Further preferably, the left and right side faces of the pipe segment connector and the ridged lower surface are coated with an adhesive, whereby bonding is performed between the annular sockets in contact with the pipe segment.

Further preferably, the outer side of the pipe segment joint is also wrapped with bamboo fibers, thereby further enhancing its sealing property.

Further preferably, the pipe connector size parameter is preferably designed as follows: the overall width thereof, that is, the distance from the left to the right of the straight upper surface is 30 mm to 50 mm, and the minimum thickness thereof is the left side or the right side. The height of the side surface is 5 mm to 8 mm, and the maximum thickness thereof is also from the straight surface. The distance between the highest point of the lower surface of the ridge is 7 mm to 15 mm.

Further preferably, the annular socket reserved at the end of the pipe section also has a slope of 5° to 10° and is complementary to one side of the ridged lower surface of the pipe segment connector.

Further preferably, the pipe joint connector includes, in order from the inside to the outside thereof, an inner protective layer, a bamboo winding reinforcing layer and an outer protective layer, wherein the inner protective layer is cured by a non-woven fabric impregnated with an adhesive. Produced and formed a smooth and impervious inner wall; the structural layer is formed by wrapping a bamboo slab adhered with a water-soluble resin on the outer layer of the inner lining; the outer protective layer is at the outermost side and functions to prevent aging And waterproof.

Further preferably, for each pipe section, it also includes, in the radial direction, an inner liner layer and a structural layer adjacent to each other, wherein the inner liner layer is formed by curing a fabric impregnated with an adhesive. The structural layer is formed by multi-layer winding a bamboo curtain with a water-soluble resin adhered thereto and wrapping the mesh cloth outside the inner liner.

Further preferably, the fabric of the inner liner layer is preferably a bamboo fiber nonwoven fabric, wherein the bamboo fiber content is greater than or equal to 98%, the areal density is 40 g/m ² to 50 g/m ² , and the water content is 8% to 15 %.

Further preferably, the bamboo curtain of the structural layer comprises a circumferential bamboo curtain and an axial bamboo curtain, wherein the circumferential direction of the bamboo curtain, that is, all the bamboo sheets, is the length of the bamboo curtain The direction is consistent, and the axial direction of the bamboo slats, that is, all the bamboo slabs, is consistent with the width direction of the bamboo drapes formed therein; and the number of winding layers of the axial bamboo drapes in the entire structural layer The number of winding layers larger than the circumferential bamboo curtain; in addition, the radial tensile strength of the bamboo raft is set to 80±20 MPa, and the bamboo fiber content is 40%±5%, and the water content is 10%±2. In addition, the tensile strength of the annular bamboo curtain is 1500±100N, and the tensile strength of the axial bamboo curtain is 200±20N.

Further preferably, the mesh of the structural layer is preferably made of polyester polyester, and has a mesh center distance of 4 mm×4 mm, an areal density of 30 g/m ² to 40 g/m ² , and a warp and weft elongation. The rate of growth is greater than or less than 5%.

Further preferably, the inner side of the inner liner layer may further be provided with a waterproof layer, the structure An outer protective layer may also be provided on the outer side of the layer.

In general, the above technical solutions conceived by the present invention mainly have the following technical advantages compared with the prior art:

1. By designing the specific shape and structure of the pipe joints themselves and their setting methods, it is not only convenient to apply glue, but also alternately inserts into the socket of the pipe straight pipe to be assembled, and the slope The face design further enhances the friction and firm bond with the straight pipe socket; in addition, the left and right sides and the flat upper surface are designed to achieve a substantially seamless effect when performing pipe assembly and contribute to the construction process. Check if their connections are on the same line;

2. Through further research and design of the structure and its key parameters of the pipe joints, more tests have shown that it can be better compatible with the pipe joints made of bamboo composite materials, and the products obtained are not only High-efficiency, quality-controlled execution of sealed joints between large-volume sections, and quality and performance stability in long-term use environments.

[Description of the Drawings]

Figure 1 is a cross-sectional view showing the basic structure of a pipe section of a bamboo composite pipe to be assembled, and more specifically showing an annular socket at the end of the pipe at the right side thereof;

2 is a cross-sectional view showing the overall structure of a pipe joint connector designed in accordance with a preferred embodiment of the present invention, and more specifically showing its cross-sectional shape and its critical dimension for performing a seal coupling portion with an annular socket;

Figure 3 is a cross-sectional view showing the structure in which the pipe joint connector is fitted between the two pipe pipe sections by a linear coupling method;

Fig. 4 is a perspective view showing the structure in which the pipe joint connector is fitted between the two pipe pipe sections by a linear coupling method.

[detailed description]

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, as described below The technical features involved in the various embodiments of the present invention may be combined with each other as long as they do not constitute a conflict with each other.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing the basic structure of a pipe section of a bamboo composite pipe to be assembled, and more specifically showing an annular socket at the end of the pipe at the right side thereof, but the structure of the ring socket at the left end of the pipe is The same. As shown in Fig. 1, as a basic component of the bamboo composite pipe gallery, each pipe segment is in the form of a straight pipe having a length L ₀ (preferably 6000 mm) and an outer diameter of Ф ₀ and D ₀ respectively, and at the left and right ends thereof. Each of them is pre-processed with a circular socket. More specifically, the inside of the straight pipe may be sequentially machined with grooves having a depth of h1 and a width of d1 according to different pitches (L ₁ and L ₂ ); and then first cut at the ends thereof in the vertical direction. a wall having a height h ₂ and then forming a slope having a length d ₂ and a slope of 5° to 10° in a downwardly inclined direction, and leaving the wall thickness at the rightmost end as h ₃ ; In this way, a socket having both a vertical contact surface and a slope contact surface can be obtained to facilitate subsequent sealing engagement with the connector.

2 is a cross-sectional view showing the overall structure of a pipe segment joint designed in accordance with a preferred embodiment of the present invention, and more specifically showing the cross-sectional shape of the coupling member for performing sealing with the annular socket. As shown in Fig. 2, the pipe joint member is, for example, in the form of a bundle, the length of which can be determined according to the requirements of the pipe gallery, generally 400 mm to 600 mm, and integrally fitted at the end of the pipe pipe section to thereby form a circumference. The ring having a length of Ф _L , whereby the pipe joint sections adjacent to each other are preferably hermetically connected by a linear coupling. More specifically, the connecting member is used to jointly join the adjacent two straight tubes of the pipe can be formed into a wedge-shaped cross section by cutting, the wedge-shaped structure consisting of a horizontally extending flat upper surface (the whole The left side and the right side (the height is b2) having a width L), vertically extending and parallel to each other, and a symmetrical lower surface of the ridge (the distance from the highest point to the flat upper surface is b1) The composition is common, and the ridge-shaped lower surface has a slope of 5° to 10° along both sides of the center line.

By the above concept, when performing the assembly, the adhesive can be first applied to the left and right sides of the pipe joint and the lower surface of the ridge, and then the pipe segments to be assembled on the two sides of the pipe are respectively opposite to the connector. Connecting, thereby utilizing a circular socket that is in contact with the pipe section of the pipe section Bonding is performed between. On the one hand, the slope design of the end face of the connecting piece and the pipe section can further enhance the friction and firm adhesion between each other; on the other hand, the design of the left and right sides and the straight upper surface can obtain basic when performing pipe section assembly. The effect of the seamless gap helps to check whether the joints are in the same line during the construction process, thus ensuring that the entire pipe gallery after final assembly is not only kept flat, but also has a reliable sealing connection.

In addition, according to a preferred embodiment of the present invention, the key dimension parameters of the pipe segment connector are also designed as follows: the overall width L, that is, the distance from the left to the right of the straight upper surface is 30 mm to 50 mm, which is the smallest The thickness, that is, the height of the left side surface or the right side surface is 5 mm to 8 mm, and the maximum thickness thereof, that is, the distance from the flat upper surface to the highest point of the ridge lower surface is 7 mm to 15 mm. More practical tests have shown that the above dimensional parameters can achieve a good balance between the finally obtained sealing performance and the amount of materials used, and at the same time facilitate the processing and processing operations of various types of bamboo composite pipe straight pipes.

According to another preferred embodiment of the present invention, the pipe segment connecting member may sequentially include an inner protective layer, a bamboo winding reinforcing layer and an outer protective layer from the inside to the outside in a thickness direction thereof, wherein the inner protective layer is impregnated with an adhesive. The non-woven fabric is obtained by curing, and forms a smooth and impervious inner wall; the structural layer is formed by winding a bamboo slab adhered with a water-soluble resin on the outer layer of the inner lining; the outer protective layer is at the outermost side, It also has anti-aging and waterproof functions.

3 and 4 respectively show a cross-sectional view and a perspective view of a structure in which a pipe joint connector is fitted between two pipe pipe sections by a linear coupling method. As shown in the figure, the two pipe joints after assembly are smooth and non-protruding, and can be used very well with the pipe joints made of bamboo composites. The obtained products are not only highly efficient but also controllable in quality. It performs the sealing connection between large-volume pipe sections and ensures the quality and performance stability under long-term use environment, so it is especially suitable for the sealing connection application between the pipe sections of bamboo composite pipe.

Those skilled in the art will appreciate that 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 and improvements made within the spirit and scope of the present invention, All should be included in the scope of protection of the present invention.

Claims

A pipe joint connecting member suitable for a bamboo composite integrated pipe gallery, characterized in that the pipe segment connecting member is integrally fitted and installed at an annular socket reserved at an end of each of the adjacent two pipe trunk pipe segments, and a section of the joint portion thereof a wedge-shaped structure; the wedge-shaped structure is composed of a horizontally extending flat upper surface, vertically extending and parallel left and right sides, and a left and right symmetrical lower surface, and the ridged lower surface is along The sides of the center line each have a slope of 5° to 10°.
A pipe joint connector suitable for a bamboo composite integrated pipe gallery according to claim 1, wherein the left and right sides of the pipe joint member and the ridged lower surface are coated with an adhesive, This bonding is performed between the annular sockets that are in contact with the pipe section.
A pipe joint connector suitable for a bamboo composite integrated pipe gallery according to claim 1 or 2, wherein the outer side of the pipe segment connecting member is also wrapped with bamboo fibers.
A pipe joint connecting member suitable for a bamboo composite integrated pipe gallery according to any one of claims 1 to 3, wherein the pipe segment connecting member size parameter is preferably designed as follows: the overall width thereof is the straight line The distance from the left to the right of the upper surface is 30 mm to 50 mm, and the minimum thickness thereof, that is, the height of the left side surface or the right side surface is 5 mm to 8 mm, and the maximum thickness thereof is from the straight upper surface to the ridge. The distance between the highest points of the lower surface is 7 mm to 15 mm.
A pipe joint connector suitable for a bamboo composite integrated pipe gallery according to any one of claims 1 to 4, wherein the annular socket reserved at the end of the pipe pipe section is also provided with 5 to 10 degrees. The slope is complementary to one side of the ridged lower surface of the pipe segment connector.
A pipe joint connecting member suitable for a bamboo composite integrated pipe gallery according to any one of claims 1 to 5, wherein the pipe segment connecting member comprises an inner protective layer layer in order from the inside to the outside in the thickness direction thereof. a bamboo wound reinforcing layer and an outer protective layer, wherein the inner protective layer is obtained by curing a non-woven fabric impregnated with an adhesive, and forms a smooth and impervious inner wall; the structural layer is made of bamboo flakes adhered with a water-soluble resin The outer layer is cured by being wrapped around the inner liner; the outer protective layer is at the outermost side and functions as an anti-aging and waterproof function.
A pipe joint connector suitable for use in a bamboo composite integrated pipe gallery according to any one of claims 1 to 6, characterized in that, for each pipe pipe segment, it is adjacent to each other in the radial direction. An inner liner layer and a structural layer, wherein the inner liner layer is cured by a non-woven fabric impregnated with an adhesive, and forms a smooth and impervious inner wall; the structural layer is adhered with a water-soluble resin and wraps the mesh cloth The bamboo curtain is multi-layered and solidified outside the inner liner, and the bamboo curtain is a curtain structure composed of a plurality of bamboo rafts connected by a braided wire.
A pipe joint connector suitable for a bamboo composite integrated pipe gallery according to claim 7, wherein the inner side of the inner liner layer may further be provided with a waterproof layer, and the outer side of the structural layer may also be provided with an outer layer. The protective layer.