CN212835506U - Bamboo winding composite pipe gallery with high fire resistance limit - Google Patents
Bamboo winding composite pipe gallery with high fire resistance limit Download PDFInfo
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- CN212835506U CN212835506U CN202021676721.1U CN202021676721U CN212835506U CN 212835506 U CN212835506 U CN 212835506U CN 202021676721 U CN202021676721 U CN 202021676721U CN 212835506 U CN212835506 U CN 212835506U
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Abstract
The utility model discloses a compound piping lane of bamboo winding with high fire endurance belongs to bamboo winding piping lane technical field, and it is through setting up the first flame retardant coating by inorganic mineral substance felt and fire-retardant resin curing molding to set up the flame retardant coating that is formed by the intumescent fire retardant coating in organic on the interior wall of first flame retardant coating, and then form the compound piping lane of bamboo winding with high fire endurance. The utility model discloses a compound piping lane of bamboo winding with high limit of fire resistance, a structure is simple, the preparation is simple and convenient, combination setting through organic expansion type fire retardant coating and inorganic mineral substance felt, can be under the prerequisite that does not greatly increase the piping lane dead weight, effectively promote the inside fire behavior of piping lane, make the fire behavior of piping lane can reach the incombustibility structural requirement that is not less than 3.0h, satisfy the application demand of piping lane under specific environment, promote the structural performance of piping lane, the range of application of piping lane has been enlarged, the application cost of piping lane has been reduced, better application prospect and spreading value have.
Description
Technical Field
The utility model belongs to the technical field of the bamboo winding piping lane, concretely relates to compound piping lane of bamboo winding with high fire endurance.
Background
The pipe gallery is a structural facility built underground for laying various pipelines, and the structural facility is usually integrated with various pipelines such as electric power, communication, radio and television, gas, water supply and drainage, heating power and the like, plays a role in effectively utilizing urban underground space and saving underground space resources, also stops the irregular excavation of each professional pipeline, reduces the influence on road and surrounding environment, and thoroughly solves the problems of 'zip fastener on road', 'spider web in the air' and the like.
At present, use more piping lane and adopt reinforced concrete structure mostly, it is through cast-in-place or prefabricated form shaping, can satisfy the demand that the piping lane functional was used to a certain extent, however, traditional reinforced concrete piping lane often need consume a large amount of non-renewable resources in preparing the forming process, can cause the destruction to the environment to a certain extent, and traditional reinforced concrete piping lane's structural quality is great, the construction volume of engineering is big, the construction cycle is long, the cost is high, maintain, overhaul the difficulty, it adapts to the demand of modernized city construction more and more to be difficult to.
In view of this, more and more researchers are focusing on renewable resources to expect to prepare a low-cost, functional piping lane structure using renewable resources. For example, in the existing patent application document CN 108018876A, a bamboo composite comprehensive pipe gallery is disclosed, a pipe body of the pipe gallery sequentially comprises an inner liner layer, a structural layer and an outer protective layer from inside to outside along the pipe diameter direction, the structural layer is formed by combining and curing bamboo skin materials matched with resin and bio-based fillers, stable support is provided for the pipe gallery, the idea that the pipe gallery is prepared from renewable resources is realized, the cost of preparation and application of the pipe gallery is reduced, and the damage of the pipe gallery to the environment is reduced.
With the continuous development of bamboo winding technology and the continuous deepening of the research of bamboo winding pipe gallery in recent years, more and more pipe galleries are put into use, the types of the pipe galleries are more and more, and the application environment is wider and more. However, the base materials forming the structural layer and the inner liner layer are made of flammable materials such as bamboo skin, fiber felt and the like, so that the fireproof performance of the bamboo-wound pipe gallery is concerned. At present, for guaranteeing that bamboo winding piping lane has better fire behavior, when actual preparation, often adopt the fire prevention that difficult fire or incombustible resin soaks raw and other materials realize the piping lane, this kind of setting up the fire prevention demand that the form can satisfy the piping lane to a certain extent. Nevertheless, when the piping lane was used and is provided with inflammable and explosive device/material in high temperature high thermal environment or the piping lane, there was certain application risk in current piping lane just, under the effect of high temperature, strong thermal environment or local conflagration, there was the risk of substrate and resin separation in the inner liner of piping lane, and the inner liner probably is punctured, and then leads to the structural layer progressively to become invalid, destroy, influences the life of piping lane. In addition, the national standard GB50838-2015 specifies that the main structure body of the comprehensive pipe gallery is a non-combustible structure with the fire endurance not lower than 3.0h, while the fire endurance of the existing bamboo-wound composite pipe gallery can only reach B1 (fire endurance), and particularly after the pipe gallery is applied for a long time, the inner surface of the pipe gallery can be aged and peeled off, so that the fire endurance of the bamboo-wound composite pipe gallery is further deteriorated. Due to the problems, the application of the bamboo winding pipe gallery at the present stage has certain limitations, and the application potential of the bamboo winding pipe gallery cannot be fully developed.
SUMMERY OF THE UTILITY MODEL
To the above defect of prior art or improve in the demand one or more, the utility model provides a compound piping lane of bamboo winding with high fire endurance can promote the inside fire behavior of piping lane under the condition that does not increase the piping lane dead weight by a wide margin for the fire-resistant rating of piping lane reaches the incombustibility structural requirement that fire endurance is not less than 3.0h, thereby enlarges the range of application of piping lane, prolongs the life of piping lane.
In order to achieve the purpose, the utility model provides a bamboo-wound composite pipe gallery with high fire resistance limit, which comprises a pipe gallery main body and a fireproof layer;
the fireproof layer comprises a first fireproof layer and a second fireproof layer which are sequentially arranged in the pipe gallery main body;
the first fireproof layer is arranged on the inner peripheral wall surface of the pipe gallery main body and is formed by winding, bonding and curing inorganic mineral substance felt and flame-retardant resin;
the second fireproof layer is arranged on the inner peripheral wall surface of the first fireproof layer and is made of organic expansion type fireproof paint.
As a further improvement, the fireproof layer further comprises a terminal surface fireproof layer arranged on the two end surfaces of the pipe gallery.
As a further improvement of the utility model, the inorganic mineral substance felt is one or more of basalt felt, silicate felt, ceramic felt and zirconia felt.
As a further improvement of the utility model, the thickness of the two ends of the second fireproof layer is larger than the thickness of the middle part of the second fireproof layer; and the thickness of the two ends of the second fireproof layer is 1.5-11 mm, and the thickness of the fireproof layers of other parts except the two ends is 0.5-10 mm.
As a further improvement of the utility model, the terminal surface flame retardant coating by the radially outermost of piping lane main part extend the parallel and level in the interior week wall of second flame retardant coating, just the setting thickness of terminal surface flame retardant coating is 1.5 ~ 11 mm.
As a further improvement of the utility model, the surface density of the inorganic mineral felt is not more than 100g/m2(ii) a And the fire-retardant treeThe penetration rate (25 ℃) of the grease is less than or equal to 250s, the viscosity is less than 5000mPa.s, and the solid content is more than or equal to 50%.
As a further improvement of the utility model, the pipe gallery main body comprises a structural layer and an outer protective layer which are sequentially arranged from inside to outside in the radial direction; the structural layer sets up the periphery of first flame retardant coating, just outer inoxidizing coating is by set up in outer protective resin solidification on the structural layer periphery forms.
As a further improvement, the utility model discloses a first flame retardant coating with between the structural layer and/or be provided with a plurality of temperature sensing chip in the structural layer for the inside temperature that corresponds the position of real-time supervision bamboo winding composite pipe gallery.
As a further improvement, the surface of the second fireproof layer is provided with a waterproof layer, and the waterproof layer is formed by acrylic acid, polyurethane or polyurea resin through spraying, roller coating or smearing.
As a further improvement, the waterproof layer is 0.5-5 mm thick.
The above-described improved technical features may be combined with each other as long as they do not conflict with each other.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:
(1) the utility model discloses a compound piping lane of bamboo winding with high limit of fire resistance, it is through setting up the first flame retardant coating by inorganic mineral substance felt and fire-retardant resin curing molding, and set up the second flame retardant coating that is formed by the intumescent fire retardant coating of organic on the interior peripheral wall of first flame retardant coating, not only effectively promoted the interior peripheral fire behavior of bamboo winding piping lane, and the setting thickness of second flame retardant coating is little, strong with the adhesive force of first flame retardant coating, can not increase the dead weight of piping lane by a wide margin, and the setting stability of flame retardant coating is high, and then make the fire rating of bamboo winding piping lane can reach the fire resistance limit requirement stipulated in GB9978-2008, satisfy the application of bamboo winding piping lane under high temperature, high thermal environment, effectively enlarged the range of application of bamboo winding piping lane, the life of bamboo winding piping lane has been prolonged, the application cost of bamboo winding piping lane has been reduced;
(2) the utility model discloses a compound piping lane of bamboo winding with high fire endurance, it is through the preferred surface density who sets up inorganic mineral substance felt and the parameter index of fire-retardant resin, guarantee that inorganic mineral substance felt and fire-retardant resin can fully soak, form the wholeness strong, the high fire-proof material of homogeneity, and make the first flame retardant coating after the shaping not turn white, not bubble, when effectively having avoided using fire-retardant resin alone, piping lane weight increases by a wide margin, piping lane intensity is low, the serious defect of resin layer shrink/fracture/ageing, also avoided the fire risk that probably exists when using inorganic mineral substance felt alone, the compactness and the stability that first flame retardant coating set up have been guaranteed, the inside fire behavior of piping lane has further been promoted;
(3) the utility model discloses a compound piping lane of bamboo winding with high fire endurance, it has effectively realized the fire coat and has separated with the interior steam of piping lane through setting up the tip flame retardant coating respectively at the both ends of piping lane main part to set up the waterproof layer on the surface of second flame retardant coating and tip flame retardant coating, has avoided peeling off and droing of fire coat, has protected the fire coat, has prolonged the life of fire coat;
(4) the utility model discloses a compound piping lane of bamboo winding with high limit of fire resistance, it is through setting up the both ends of second flame retardant coating respectively to be than the form that the second flame retardant coating middle part is thicker, makes the fire behavior of piping lane at the connecting end portion can reach the limit of fire resistance requirement stipulated in GB9978-2008, has avoided the piping lane to lead to the fire behavior to descend because of the weak region, prevents the piping lane because the structural damage that high temperature punctures and leads to, guarantees the life of piping lane;
(5) the utility model discloses a compound piping lane of bamboo winding with high fire endurance, it is through setting up a plurality of temperature sensing chip between second flame retardant coating and structural layer and/or structural layer inside, can real-time supervision compound piping lane of bamboo winding inside corresponds the temperature of position, and report to the police when the temperature that detects reaches the default (for example 100 ℃), realize then carrying out early warning to the conflagration that probably takes place in advance, or the position of conflagration is made clear and definite at the initial stage of conflagration, and control it when the conflagration does not develop very seriously, reduce the destruction degree of piping lane, reduce loss of property;
(6) the utility model discloses a compound piping lane of bamboo winding with high limit of fire resistance, a structure is simple, the preparation is simple and convenient, combination setting through organic expansion type fire retardant coating and inorganic mineral substance felt, can be under the prerequisite that does not greatly increase the piping lane dead weight, effectively promote the inside fire behavior of piping lane, make the limit of fire resistance of piping lane reach the incombustibility structural requirement that is not less than 3.0h, satisfy the application demand of piping lane under specific environment, promote the structural performance of piping lane, the range of application of piping lane has been enlarged, the application cost of piping lane has been reduced, better application prospect and spreading value have.
Drawings
Fig. 1 is a structural sectional view of a bamboo-wrapped composite pipe gallery having a high fire endurance in an embodiment of the present invention;
FIG. 2 is a sectional view taken along the line A-A of a bamboo-wrapped composite pipe lane having a high fire endurance in an embodiment of the present invention;
in all the figures, the same reference numerals denote the same features, in particular:
1. the pipe gallery comprises a pipe gallery main body, 101, a structural layer, 102 and an outer protective layer; 2. the fireproof layer 201 is a first fireproof layer 202 is a second fireproof layer 203 is an end surface fireproof layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Example (b):
referring to fig. 1 and 2, the bamboo-wrapped composite pipe gallery with high fire endurance in the preferred embodiment of the present invention includes a pipe gallery body 1 and a fireproof layer 2 disposed on the inner periphery and end of the pipe gallery body 1.
In particular, the pipe gallery body 1 in the preferred embodiment preferably includes a structural layer 101 and an outer protective layer 102 disposed in radial order from the inside to the outside. The structural layer 101 is formed by bonding and curing bamboo skin materials and resin. Specifically, the bamboo split material in the preferred embodiment includes an axial bamboo split curtain and a circumferential bamboo split curtain, and the axial bamboo split curtain and the circumferential bamboo split curtain are alternately arranged in the radial direction until the structural layer 101 with good integrity is formed through curing. Further, after the formation of the structural layer 101, an outer protection layer 102 is correspondingly disposed on the outer periphery of the structural layer 101, the outer protection layer 102 is preferably formed by curing and molding an outer protection resin which is roll-coated on the outer periphery of the structural layer 101, and the thickness of the outer protection layer 102 in the preferred embodiment is preferably 0.5-3 mm, and further preferably 1 mm.
Further, the flame retardant layer 2 in the preferred embodiment includes a first flame retardant layer 201 and a second flame retardant layer 202 as shown in fig. 1. The first fireproof layer 201 is formed by winding and bonding multiple layers of inorganic mineral substance felt and flame-retardant resin in a circumferential direction and then curing, the inorganic mineral substance felt in the preferred embodiment can be one or more of basalt felt, silicate felt, ceramic felt and zirconia felt, the inorganic mineral substance felt is an inorganic material and has certain fire resistance, and compared with the existing bamboo fiber felt which is applied more, the fireproof performance can be improved to a certain extent. Moreover, the inorganic mineral substance felt is low in cost, non-toxic and easy to process, has obvious performance advantages compared with a bamboo fiber felt, and is also obviously superior to the existing materials such as mesh cloth (inflammable), glass fiber felt (toxic and low temperature resistant) and the like.
In order to ensure the setting requirement of the first fireproof layer 201, the surface density of the inorganic mineral felt is required to be controlled not to be more than 100g/m during actual setting2The penetration rate (25 ℃) of the flame-retardant resin is less than or equal to 250s, the viscosity is less than 5000mPa.s, and the solid content of the flame-retardant resin is not less than 50%. In thatUnder the setting range of the parameters, the inorganic mineral substance felt can be fully soaked by the flame-retardant resin, so that the flame-retardant resin and the inorganic mineral substance felt can form an integral fireproof material, and the uniform and stable fireproof performance of the first fireproof layer 201 in the thickness direction is ensured.
For example, in one embodiment, the first fire-retardant layer 201 is prepared by winding a basalt felt together with a urea resin, and the areal density of the basalt felt is controlled to be not more than 38g/m to ensure the wetting effect of the resin2Within the range of (1), the basalt felt is low in gram weight and large in gaps under the surface density, the resin can be ensured to be uniformly soaked, the basalt felt soaked with the resin is not whitened and does not foam, and the formed first fireproof layer 201 is good in overall performance.
In actual installation, the first fireproof layer 201 is arranged before the structural layer 101, that is, after the first fireproof layer 201 is wound on a mold and cured, the structural layer 101 is arranged on the outer periphery of the first fireproof layer 201. In a preferred embodiment, before the structural layer 101 is disposed, at least one layer of resin-impregnated mesh cloth is wound and bonded on the outer periphery of the first fire-retardant layer 201 to form a first transition layer, so as to enhance the bonding stability of the structural layer 101 on the outer periphery of the first fire-retardant layer 201 and avoid the delamination of the two layers. Preferably, the number of the arranged first transition layers is 1, and the resin for bonding and curing is urea-formaldehyde resin.
After the first fireproof layer 201, the structural layer 101 and the outer protective layer 102 are cured and molded, the molded pipe gallery structure can be detached from the mold. Thereafter, it is necessary to provide the second flame retardant layer 202 on the inner peripheral wall surface of the first flame retardant layer 201. Specifically, the second fireproof layer 202 is formed by spraying, rolling, smearing, etc. an organic intumescent fireproof coating.
When setting up second flame retardant coating 202, need fully consider the structural feature and the material of piping lane main part 1, because the piping lane substrate has certain (inflation/shrink) to warp under the wet and dry environment, therefore fire retardant coating need select the material that adhesive force is strong and have certain elastic deformation space, guarantees that second flame retardant coating 202 can not appear obvious fracture when piping lane main part 1 takes place to warp, ensures that second flame retardant coating 202 can remain the integrality all the time. Meanwhile, the thickness of the second fireproof layer 202 is not too thick, so that the dead weight of the pipe gallery structure is not too large. For the reasons mentioned above, the fire-retardant coating of the preferred embodiment is chosen to be an organic intumescent fire-retardant coating, such as the commercially available ZQ-960 organic intumescent fire-retardant coating. This type of fire retardant coating's adhesion is strong, and fire prevention effect is good, and when the piping lane met with the conflagration, the carbomorphism agent is heated and is expanded to 40 times, forms porous structure, has the separation outside air, has reduced heat conduction rate simultaneously, plays the thermal-insulated effect of fire prevention. Under the general condition, the fire-proof effect that ordinary fire-proof coating is 20-30 mm thick just can be reached to the thickness that only needs 0.5-5 mm to set up, guarantees that the limit of fire resistance of piping lane reaches the incombustibility structural requirement that is not less than 3.0 h.
In addition, when piping lane actual application, the inner wall of its piping lane is often comparatively moist, for the stability of guaranteeing second flame retardant coating 202 setting, is provided with the waterproof layer at the surface of second inoxidizing coating 202 usually, plays isolated steam, avoids the effect that fire retardant coating peeled off. Specifically, the waterproof layer in the preferred embodiment may be formed by spraying, rolling, smearing, etc. a material such as acrylic acid, polyurethane, polyurea resin, etc., and the thickness of the waterproof layer is preferably 0.5 to 5mm, and more preferably 2 mm.
In addition, as for the two ends of the pipe gallery, butt joint or arrangement of a binding joint is usually required, a seam is often formed, and the fireproof performance is poor. In view of this, the second flame retardant layer 202 is often provided with a greater thickness at both ends than in the middle. Specifically, the thickness of the second fireproof layer 202 is 1.5-11 mm, and the thickness of the other parts except the two ends is 0.5-10 mm. Meanwhile, the axial length of the area of increased thickness of the second flame retardant layer 202, which extends from the end of the pipe gallery to the middle of the pipe gallery, accounts for 1/20-1/5 of the overall length of the pipe gallery, as shown in FIG. 1.
In addition, an organic intumescent fire retardant coating with the thickness of 1.5-11 mm is correspondingly coated on the two end faces of the pipe gallery to form an end face fire retardant layer 203, as shown in FIG. 1. This terminal surface flame retardant coating 203 extends to the parallel and level in the inner peripheral wall face of second flame retardant coating 202 by the radial outermost side of piping lane, through the corresponding setting of terminal surface flame retardant coating 203, can avoid destroying the inefficacy because of the piping lane tip that the seam exists and lead to.
Further, for further promoting the fire prevention effect of piping lane, be provided with the temperature sensing chip between first flame retardant coating 201 and piping lane main part 1 in structural layer 101 for the temperature that the real-time detection piping lane corresponds the position. Specifically, the temperature-sensitive chips are correspondingly attached to the outer periphery of the first fireproof layer 201 after the first fireproof layer 201 is completely disposed, and the temperature-sensitive chips are disposed at intervals on the outer periphery of the first fireproof layer 201. Preferably, a groove structure is provided on the outer circumference of the first fireproof layer 201 corresponding to the temperature-sensitive chip, and the temperature-sensitive chip is disposed in the corresponding groove structure.
After the temperature sensing chips are arranged on the periphery of the first fireproof layer 201, the bonding structure layer 101 is wound on the periphery of the first fireproof layer 201, and when the structure layer 101 is arranged, a plurality of temperature sensing chips can be arranged in the structure layer 101 at intervals. At this moment, the temperature sensing chip sets up at the axial of structural layer, radially at the interval, ensures that the temperature sensing chip can the different positions of real-time detection piping lane to the practical application state of conveniently judging the piping lane. Through the corresponding setting of temperature-sensing chip, can carry out real-time supervision to the temperature of piping lane structure, the temperature that the temperature-sensing chip of specific position detected reaches default (for example 100 ℃) the time alright report to the police to the realization carries out early warning to the conflagration that probably takes place in advance, perhaps the position of the clear fire in the initial stage of conflagration, and control it when the conflagration does not develop very seriously, reduce the destruction degree of piping lane, prolong the life of piping lane.
Accordingly, for the bamboo-wrapped composite pipe lane having a high fire endurance in the preferred embodiment, the preparation method thereof preferably includes the steps of:
(1) preparation of raw materials
Preparing or preparing inorganic mineral felt and fire-retardant resin, wherein the surface density of the inorganic mineral felt is not more than 100g/m2(e.g., an areal density of not greater than 60g/m in preferred embodiments2Basalt felt) and the penetration rate (25 ℃) of the flame-retardant resin is less than or equal to 250s, the viscosity is less than 5000mPa.s, and the flame-retardant resinThe solid content is not less than 50%. The inorganic mineral mat is then impregnated with a fire-retardant resin (e.g., urea-formaldehyde resin in the preferred embodiment) for use, ensuring that the inorganic mineral mat is uniformly saturated with the fire-retardant resin.
Meanwhile, preparing an axial bamboo strip curtain and a circumferential bamboo strip curtain for forming the structural layer 101, and resin (such as urea resin) which needs to be sprayed synchronously when the bamboo strip curtain is wound and formed; secondly, preparing an organic intumescent fire retardant coating for forming a fire retardant layer, a waterproof coating for forming a waterproof layer and an outer protective resin for forming an outer protective layer 102; in addition, a resin-impregnated mesh fabric for winding and bonding the transition layer is required.
(2) First flame retardant layer 201 preparation
Sequentially winding a plurality of layers of prepared inorganic mineral substance felts on a forming die along the annular direction, and bonding, curing and forming the plurality of layers of inorganic mineral substance felts by using resin on the inorganic mineral substance felts to form a first fireproof layer 201 integral structure; as for the setting thickness of the first fireproof layer 201, the setting thickness can be optimized according to actual needs, and the thickness is 0.5-5 mm in the preferred embodiment.
(3) Preparation of structural layer 101
On the periphery of the formed first fireproof layer 201, a structural layer 101 is formed by alternately winding and bonding axial bamboo skin curtains and circumferential bamboo skin curtains. In a specific embodiment, structural layer 101 includes 5 layers of axial thin bamboo strips used for weaving curtain that the winding bonded from inside to outside in proper order when setting up, 10 layers of hoop thin bamboo strips used for weaving curtain, 10 layers of axial thin bamboo strips used for weaving curtain, 27 layers of hoop thin bamboo strips used for weaving curtain, 8 layers of axial thin bamboo strips used for weaving curtain and 10 layers of hoop thin bamboo strips used for weaving curtain, drench urea-formaldehyde resin in step when winding each thin bamboo strips used for weaving curtain, guarantee can stabilize between each layer thin bamboo strips used for weaving curtain and bond, finally form complete structural layer 101. In the process of carrying out structural layer 101 winding bonding, still corresponding curing agent and the filler of having added for guarantee the fastening nature of connecting between the adjacent thin bamboo strips used for weaving layer, reduce the space between the adjacent two thin bamboo strips used for weaving layer.
In addition, when the innermost bamboo skin curtain of the structural layer 101 is wound and bonded, at least one layer of mesh cloth can be wound and bonded on the periphery of the first fireproof layer 201 to form a first transition layer, and then the structural layer 101 is formed on the periphery of the transition layer. Meanwhile, at least one layer of mesh cloth can be correspondingly wound and bonded on the periphery of the formed structure layer 101 to form a second transition layer.
After the structure is formed, the formed structure can be cured and formed, and the curing time is 24-30 hours.
Correspondingly, if the temperature-sensing chip is required to be arranged between the first fireproof layer 201 and the structural layer 101, the temperature-sensing chip can be arranged on the peripheral wall surface of the first fireproof layer 201 before the structural layer 101 is arranged, multiple groups of temperature-sensing chips can be arranged in the axial direction at intervals, and each group of temperature-sensing chips comprises multiple groups arranged along the circumferential direction at intervals. Meanwhile, if the temperature sensing chip is required to be arranged in the structural layer 101, the temperature sensing chip can be correspondingly arranged according to the radial and axial positions of the temperature sensing chip in the structural layer 101 in the process of winding, bonding and molding the structural layer 101.
(4) Preparation of the outer protective layer 102
An outer protective resin with a certain thickness is uniformly coated on the periphery of the formed structural layer 101 (when the second transition layer is present, the periphery of the second transition layer), and after the outer protective resin is cured and formed, an outer protective layer 102 outside the structural layer 101 is formed, so that the pipe gallery main body 1 with the first fireproof layer 201 in the preferred embodiment is obtained. In a preferred embodiment, the thickness of the outer protective layer 102 is 0.5 to 5 mm.
(5) Preparation of the second flame resistant layer 202
The molded pipe gallery structure is removed from the mold, and a second fire-retardant layer 202 molded by an organic intumescent fire-retardant coating is set on the inner wall surface of the first fire-retardant layer 201.
Before the second fireproof layer 202 is formed, the inner wall surface of the first fireproof layer 201 can be simply treated, corresponding impurities can be removed, and the flatness of the inner wall surface of the first fireproof layer 201 can be ensured. Thereafter, the second fireproof layer 202 may be disposed on the inner circumferential wall surface of the first fireproof layer 201 by spraying, roll coating, or troweling, and in actual installation, in order to ensure the uniformity of the disposition of the second fireproof layer 202, axial coating and circumferential coating may be performed alternately. The thickness of the second fireproof layer 202 after molding is 0.5-10 mm. In addition, for promoting the weak area of piping lane fire prevention-the fire behavior at both ends, when actual shaping second flame retardant coating 202, the thickness that sets up at second flame retardant coating 202 both ends is 1.5 ~ 11 mm.
(6) Preparation of end fire barrier 203
After the second fireproof layer 202 is arranged, the two end surfaces of the pipe gallery are provided with the end surface fireproof layers 203, and the end surface fireproof layers 203 extend from the surface of the outer protective layer 102 to the inner peripheral wall surface of the second fireproof layer 202, and as shown in fig. 1, the arrangement thickness is preferably 1.5-11 mm. Through the corresponding setting of first flame retardant coating 201, second flame retardant coating 202 and terminal surface flame retardant coating 203, the preparation of flame retardant coating 2 on the piping lane can be realized.
(7) Preparation of the Water repellent layer
And a waterproof layer with a certain thickness is arranged on the inner peripheral wall surface of the formed second fireproof layer 202 in a roller coating, spraying or smearing manner, the waterproof layer can be an acrylic waterproof layer, a polyurethane waterproof layer or a polyurea resin waterproof layer, and the thickness of the waterproof layer is preferably 0.5-5 mm.
The bamboo-wound composite pipe gallery with high fire endurance obtained through the steps is subjected to fire endurance testing according to relevant standards in GB9978-2008, and the obtained test result shows that the bamboo-wound composite pipe gallery with high fire endurance can guarantee structural stability for more than 3h at the test temperature of 1000 ℃, and meets the fire protection requirement of the pipe gallery.
The utility model provides a compound piping lane of bamboo winding with high limit of fire resistance, a structure is simple, the preparation is simple and convenient, through the corresponding combination of organic intumescent fire retardant coating and inorganic mineral substance felt, can be under the prerequisite that does not increase the piping lane dead weight by a wide margin, effectively promote the inside fire behavior of piping lane, make the fire behavior of piping lane can reach the limit of fire resistance requirement of regulation in GB9978-2008, satisfy the application demand of piping lane under specific environment, promote the structural performance of piping lane, the range of application of piping lane has been enlarged, the application cost of piping lane has been reduced, better application prospect and spreading value have.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A bamboo-wound composite pipe gallery with high fire resistance limit comprises a pipe gallery main body and is characterized by further comprising a fireproof layer;
the fireproof layer comprises a first fireproof layer and a second fireproof layer which are sequentially arranged in the pipe gallery main body;
the first fireproof layer is arranged on the inner peripheral wall surface of the pipe gallery main body and is formed by winding, bonding and curing inorganic mineral substance felt and flame-retardant resin;
the second fireproof layer is arranged on the inner peripheral wall surface of the first fireproof layer and is made of organic expansion type fireproof paint.
2. A bamboo wrapped composite pipe lane having a high fire limit according to claim 1, wherein the fire barrier further comprises an end fire barrier provided on both ends of the pipe lane.
3. A bamboo wound composite pipe gallery with high fire endurance as claimed in claim 1 wherein the inorganic mineral felt is one or more of basalt felt, silicate felt, ceramic felt, zirconia felt.
4. A bamboo-wrapped composite pipe corridor according to any one of claims 1 to 3, wherein the thickness of the second fire barrier layer at both ends is greater than the thickness of the second fire barrier layer at the middle; and the thickness of the two ends of the second fireproof layer is 1.5-11 mm, and the thickness of the fireproof layers of other parts except the two ends is 0.5-10 mm.
5. A bamboo-wrapped composite pipe corridor according to claim 2, wherein the fire protection end face layer extends from the radially outermost side of the corridor body to the inner peripheral wall surface flush with the second fire protection layer, and the fire protection end face layer is provided with a thickness of 1.5-11 mm.
6. A bamboo wound composite pipe corridor with high fire endurance as claimed in claim 1 wherein the pipe corridor body comprises a structural layer and an outer protective layer arranged sequentially radially from inside to outside; the structural layer sets up the periphery of first flame retardant coating, just outer inoxidizing coating is by set up in outer protective resin solidification on the structural layer periphery forms.
7. A bamboo-wrapped composite pipe corridor according to claim 6, wherein a plurality of temperature sensing chips are provided between the first fire protection layer and the structural layer and/or within the structural layer for real-time monitoring of the temperature at corresponding locations within the bamboo-wrapped composite pipe corridor.
8. A bamboo-wrapped composite pipe gallery with high fire endurance as claimed in claim 1, wherein the surface of the second fire-resistant layer is provided with a water-proof layer made of acrylic, polyurethane, or polyurea resin by spraying, roll coating, or troweling.
9. A bamboo-wrapped composite pipe gallery with high fire endurance as claimed in claim 8, wherein the waterproof layer is provided at a thickness of 0.5 to 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021676721.1U CN212835506U (en) | 2020-08-12 | 2020-08-12 | Bamboo winding composite pipe gallery with high fire resistance limit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021676721.1U CN212835506U (en) | 2020-08-12 | 2020-08-12 | Bamboo winding composite pipe gallery with high fire resistance limit |
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| Publication Number | Publication Date |
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| CN212835506U true CN212835506U (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021676721.1U Active CN212835506U (en) | 2020-08-12 | 2020-08-12 | Bamboo winding composite pipe gallery with high fire resistance limit |
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| Country | Link |
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| CN (1) | CN212835506U (en) |
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Effective date of registration: 20230310 Address after: 311122 No. 29-16, Jiaqi Road, Xianlin Street, Yuhang District, Hangzhou, Zhejiang Patentee after: Zhonglin Xinzhou Bamboo Winding Development Co.,Ltd. Address before: No. 668, shushangwang Industrial Park, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG XINZHOU BAMBOO-BASED COMPOSITES TECHNOLOGY Co.,Ltd. Patentee before: Ye Ling |
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