High-temperature-resistant flame-retardant polymer PVC (polyvinyl chloride) pipe

Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) pipes, and discloses a high-temperature-resistant flame-retardant macromolecular PVC pipe which comprises an inner pipe body, a high-temperature-resistant layer is fixedly connected to the surface of the inner pipe body, a heat-insulating layer is fixedly connected to the surface of the high-temperature-resistant layer, an outer pipe sleeve is arranged on the surface of the heat-insulating layer, a fireproof layer is coated on the surface of the outer pipe sleeve, and the fireproof layer is coated on the surface of the outer pipe sleeve. The flame retardant is arranged in the outer pipe sleeve, when flame burns into the outer pipe sleeve through the outer pipe sleeve, the flame retardant can effectively conduct flame retardance, and under the action of the high-temperature-resistant layer and the heat insulation layer, the temperature inside and outside the pipe can be effectively isolated; therefore, the liquid flowing in the pipe is prevented from being influenced by the temperature outside the pipe, the heat preservation effect on the liquid in the pipe is improved, and the high-temperature-resistant layer and the heat insulation layer have the flame-retardant effect.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC pipes, in particular to a high-temperature resistant and flame-retardant polymer PVC pipe. Background Art

[0002] When PVC pipes are used in high temperature environments, when the temperature is too high, in most cases the high temperature resistance of polyvinyl chloride is poor. At the same time, when a fire occurs, the PVC pipe is easily damaged, causing the PVC pipe to be unusable, thereby affecting the objects transported in the PVC pipe. Therefore, we proposed a high temperature resistant and flame retardant polymer PVC pipe. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the utility model provides a high-temperature resistant and flame-retardant polymer PVC pipe, which has the advantages of being provided with a flame retardant. When the flame passes through the outer pipe sleeve and burns to the inside thereof, the flame retardant can effectively perform flame retardancy, and under the action of the high-temperature resistant layer and the heat-insulating layer, the temperature inside and outside the pipe can be effectively isolated, so that the liquid flowing in the pipe is avoided from being affected by the temperature outside the pipe, thereby increasing the heat preservation effect of the liquid in the pipe, and the high-temperature resistant layer and the heat-insulating layer have the advantages of flame retardancy, etc., which solves the problem that the high-temperature resistance of polyvinyl chloride is poor in most cases, and the PVC pipe is easily damaged when a fire occurs, resulting in the PVC pipe being unusable, thereby affecting the objects transported in the PVC pipe.

[0005] (II) Technical solution

[0006] In order to achieve the above purpose, by setting a flame retardant, when the flame passes through the outer pipe sleeve and burns to the inside thereof, the flame retardant can effectively perform flame retardancy, and under the action of the high temperature resistant layer and the heat insulation layer, the temperature inside and outside the pipe can be effectively isolated, so that the liquid flowing in the pipe is avoided from being affected by the temperature outside the pipe, the heat preservation effect on the liquid in the pipe is increased, and the high temperature resistant layer and the heat insulation layer have a flame retardant effect. The utility model provides the following technical solutions: a high temperature resistant flame retardant polymer PVC pipe, comprising an inner pipe body, a high temperature resistant layer is fixedly connected to the surface of the inner pipe body, a heat insulation layer is fixedly connected to the surface of the high temperature resistant layer, an outer pipe sleeve is provided on the surface of the heat insulation layer, a fireproof layer is coated on the surface of the outer pipe sleeve, and a flame retardant is provided inside the outer pipe sleeve. By setting the flame retardant, when the flame passes through the outer pipe sleeve and burns to the inside thereof, the flame retardant can effectively perform flame retardancy, and under the action of the high temperature resistant layer and the heat insulation layer, the temperature inside and outside the pipe can be effectively isolated, so that the liquid flowing in the pipe is avoided from being affected by the temperature outside the pipe, the heat preservation effect on the liquid in the pipe is increased, and the high temperature resistant layer and the heat insulation layer have a flame retardant effect.

[0007] As a preferred technical solution of the utility model, a reinforcement layer is fixedly connected to the surface of the thermal insulation layer, and the overall compression resistance of the device is increased under the action of the reinforcement layer.

[0008] As a preferred technical solution of the utility model, the inner wall of the outer tube sleeve is fixedly connected with a plurality of reinforcement strips, and the opposite sides of the plurality of reinforcement strips are fixedly connected to the surface of the inner tube body. Under the action of the reinforcement strips, the inner tube body and the outer tube sleeve are reinforced and connected.

[0009] As an optimal technical solution of the utility model, the material of the high temperature resistant layer is glass fiber, the material of the thermal insulation layer is aerogel insulation felt, the material of the fireproof layer is polyurea coating, and the material of the flame retardant is nano-magnesium hydroxide. Glass fiber is made of glass as raw material and has the advantages of fire retardancy, heat insulation, thermal insulation, corrosion resistance and wear resistance. Aerogel insulation felt is an insulation material composed of glass fiber and aerogel as main materials. It has excellent thermal insulation performance, ultra-low density, high temperature stability, good sound absorption performance and other advantages. Polyurea coating is a high-quality pipeline fire retardant coating with a high fireproof grade and a long service life. The surface of polyurea coating is flat, smooth, and has strong weather resistance. It can withstand the influence of extreme hot and cold weather. Nano-magnesium hydroxide is a high-efficiency halogen-free flame retardant with good flame retardant performance. It will not produce secondary pollution after a fire. It also has the characteristics of strong smoke suppression, non-toxicity, non-corrosion, non-volatility, non-precipitation, and safety.

[0010] As a preferred technical solution of the utility model, the material of the reinforcement layer is a mesh of cross-woven copper wires. The copper wires have high mechanical strength and good corrosion resistance. The copper wires have high tensile strength and hardness, are not easily oxidized, and can maintain stable performance under harsh environmental conditions.

[0011] As a preferred technical solution of the utility model, the material of the reinforcement strip is copper-nickel alloy, and the copper-nickel alloy has average thermal conductivity.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a high temperature resistant flame retardant polymer PVC pipe, which has the following beneficial effects:

[0014] 1. The PVC pipe is provided with a flame retardant. When the flame passes through the outer pipe sleeve and burns to the inside thereof, the flame retardant can effectively prevent flames. Moreover, under the action of the high temperature resistant layer and the heat insulation layer, the temperature inside and outside the pipe can be effectively isolated. Therefore, the liquid flowing in the pipe is prevented from being affected by the temperature outside the pipe, thereby increasing the heat preservation effect of the liquid in the pipe. In addition, the high temperature resistant layer and the heat insulation layer have a flame retardant effect.

[0015] 2. The PVC pipe increases the overall strength of the device by providing a reinforcement layer to avoid the overall tensile deformation of the device. The overall strength of the device is increased by providing a reinforcement strip, and the thermal conductivity of the reinforcement strip is general to avoid heat conduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the overall front side cross-sectional structure of the utility model.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the inner tube body of the utility model.

[0019] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure of part A.

[0020] In the figure: 1. inner pipe body; 2. high temperature resistant layer; 3. heat insulation layer; 4. outer pipe sleeve; 5. fireproof layer; 6. flame retardant; 7. reinforcement layer; 8. reinforcement strip. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] Example 1

[0023] Reference Figure 1-4 , which is the first embodiment of the utility model, provides a high-temperature resistant and flame-retardant polymer PVC pipe, including an inner pipe body 1, a high-temperature resistant layer 2 is fixedly connected to the surface of the inner pipe body 1, a heat-resistant layer 3 is fixedly connected to the surface of the high-temperature resistant layer 2, an outer pipe sleeve 4 is provided on the surface of the heat-insulating layer 3, the front and rear sides of the inner wall of the outer pipe sleeve 4 are respectively fixedly connected to the front and rear sides of the surface of the inner pipe body 1, the surface of the outer pipe sleeve 4 is coated with a fireproof layer 5, a flame retardant 6 is provided inside the outer pipe sleeve 4, and the flame retardant 6 is arranged on the surface of the heat-insulating layer 3.

[0024] A reinforcement layer 7 is fixedly connected to the surface of the heat insulation layer 3 , and the reinforcement layer 7 is configured in a mesh shape.

[0025] A plurality of reinforcement strips 8 are fixedly connected to the inner wall of the outer tube sleeve 4 , and opposite sides of the plurality of reinforcement strips 8 are fixedly connected to the surface of the inner tube body 1 .

[0026] During use, after the device is installed in the designated position, when a fire occurs outside the device, the fireproof layer 5 has a certain fireproof effect on the flame. When the flame intensity is too high, the flame burns through the surface of the outer tube sleeve 4 to the inside thereof. After the flame contacts the flame retardant 6, the flame retardant 6 has a flame retardant effect on the flame, so that the flame cannot continue to spread to the inside of the device, thereby continuing to retard the flame. In addition, under the action of the thermal insulation layer 3 and the outer tube sleeve 4, the heat of the flame is isolated to prevent the heat of the flame from affecting the use of the inner tube body 1. At the same time, under the action of the reinforcement layer 7, the device as a whole is reinforced, and under the action of the reinforcement strip 8, the inner tube body 1 and the outer tube sleeve 4 are connected to reinforce the device as a whole.

[0027] Example 2

[0028] Reference Figure 1-4 , which is the second embodiment of the utility model, the material of the high temperature resistant layer 2 is glass fiber, the material of the heat insulation layer 3 is aerogel insulation felt, the material of the fireproof layer 5 is polyurea coating, and the material of the flame retardant 6 is nano magnesium hydroxide.

[0029] The material of the reinforcement layer 7 is a mesh of cross-woven copper wires.

[0030] The material of the reinforcement strip 8 is copper-nickel alloy.

[0031] During use, the high temperature resistant layer 2 adopts glass fiber, which can be fire-retardant and heat-insulating. The insulation layer 3 adopts aerogel insulation felt, which can be heat-insulating and sound-absorbing. The fireproof layer 5 adopts polyurea coating for fireproofing. The flame retardant 6 adopts nano-magnesium hydroxide to effectively retard flames. The reinforcement layer 7 adopts copper wire to increase the strength of the reinforcement layer 7. The reinforcement strip 8 adopts copper-nickel alloy to avoid heat conduction.

[0032] The remaining structures are the same as those of Example 1.

[0033] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A high temperature resistant flame retardant polymer PVC tube, comprising an inner tube body (1), characterized in that: The surface of the inner tube body (1) is fixedly connected to a high temperature resistant layer (2), the surface of the high temperature resistant layer (2) is fixedly connected to a heat insulating layer (3), the surface of the heat insulating layer (3) is provided with an outer tube sleeve (4), the surface of the outer tube sleeve (4) is coated with a fireproof layer (5), and the interior of the outer tube sleeve (4) is provided with a flame retardant (6).

2. The high temperature resistant flame retardant polymer PVC pipe according to claim 1, characterized in that: A reinforcement layer (7) is fixedly connected to the surface of the heat insulation layer (3).

3. The high temperature resistant flame retardant polymer PVC pipe according to claim 2, characterized in that: The inner wall of the outer tube sleeve (4) is fixedly connected to a plurality of reinforcement strips (8), and opposite sides of the plurality of reinforcement strips (8) are fixedly connected to the surface of the inner tube body (1).

4. The high temperature resistant flame retardant polymer PVC pipe according to claim 3, characterized in that: The material of the high temperature resistant layer (2) is glass fiber, the material of the heat insulating layer (3) is aerogel insulation felt, the material of the fireproof layer (5) is polyurea coating, and the material of the flame retardant (6) is nano magnesium hydroxide.

5. The high temperature resistant flame retardant polymer PVC pipe according to claim 4, characterized in that: The material of the reinforcement layer (7) is a mesh of cross-woven copper wires.

6. The high temperature resistant flame retardant polymer PVC pipe according to claim 5, characterized in that: The material of the reinforcement strip (8) is copper-nickel alloy.

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