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Plastic pre-embedded pipe, solar water heater plastic liner using the pre-embedded pipe and production method

A technology of solar water heaters and pre-embedded pipes, which is applied in the direction of solar thermal power generation, solar thermal devices, pipes/pipe joints/pipe fittings, etc., which can solve the problems of the plastic liner and pipe fittings of solar water heaters not being tightly combined and achieve good chemical stability , tight combination and long service life

Active Publication Date: 2015-08-19
青岛港乐新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to solve the problem that the plastic liner of the solar water heater is not tightly combined with the pipe fittings, and provides a plastic pre-embedded pipe and a plastic liner of the solar water heater using the pre-embedded pipe

Method used

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  • Plastic pre-embedded pipe, solar water heater plastic liner using the pre-embedded pipe and production method
  • Plastic pre-embedded pipe, solar water heater plastic liner using the pre-embedded pipe and production method
  • Plastic pre-embedded pipe, solar water heater plastic liner using the pre-embedded pipe and production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The raw material components and weight percentages of the polypropylene modified material for producing plastic pre-embedded pipes and plastic liners are:

[0056] Polypropylene: 70%, Glass Fiber: 21%, Calcium Carbonate: 2%, Dilauryl Ester: 2%, Zinc Oxide: 2%, Fixative: 3%.

[0057] The production method of the plastic liner of the solar water heater adopting the plastic pre-embedded pipe comprises the following steps:

[0058] 1) Forming of plastic embedded pipe:

[0059] Put the raw material of polypropylene modified material into the mixer according to the ratio, and mix it at 80°C for 10 hours; feed it through the screw extruder, put the mixed material into the hot-melt pipeline, and melt it at 200°C for 10 hours ;Close the mold, let the mixed material in the hot-melt pipeline enter the mold, and then blow air in the mold to make the mixed material fill the entire mold cavity. The temperature in the mold is 200°C, the pressure is 5MPa, and the control is 20 minutes...

Embodiment 2

[0066] The raw material components and weight percentages of the polypropylene modified material for producing plastic pre-embedded pipes and plastic liners are:

[0067] Polypropylene: 46%, Glass Fiber: 28%, Calcium Sulfate: 6%, Ditetradecyl Ester: 6%, Iron Oxide Red: 7%, Fixative: 7%.

[0068] The production method of the plastic liner of the solar water heater adopting the plastic pre-embedded pipe comprises the following steps:

[0069] 1) Forming of plastic embedded pipe:

[0070] Put the raw material of polypropylene modified material into the mixer according to the ratio, and mix it at 70°C for 8 hours; feed it through the screw extruder, put the mixed material into the hot-melt pipeline, and melt it at 150°C for 8 hours ;Close the mold, let the mixed material in the hot-melt pipeline enter the mold, and then blow air in the mold to make the mixed material fill the entire mold cavity, the temperature in the mold is 150°C, the pressure is 3MPa, control for 10 minutes; n...

Embodiment 3

[0077] The raw material components and weight percentages of the polypropylene modified material for producing plastic pre-embedded pipes and plastic liners are:

[0078] Polypropylene: 50%, glass fiber: 28%, calcium chloride: 5%, trioctyl ester: 5%, benzophenones: 7%, fixative: 5%.

[0079] The production method of the plastic liner of the solar water heater adopting the plastic pre-embedded pipe comprises the following steps:

[0080] 1) Forming of plastic embedded pipe:

[0081] Put the raw material of polypropylene modified material into the mixer according to the ratio, and mix it at 60°C for 5 hours; feed it through the screw extruder, put the mixed material into the hot-melt pipeline, and melt it at 180°C for 5 hours ;Close the mold, let the mixed material in the hot-melt pipeline enter the mold, and then blow air in the mold to make the mixed material fill the entire mold cavity, the temperature in the mold is 180°C, the pressure is 2MPa, control for 20 minutes; natur...

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Abstract

The invention discloses a plastic embedded pipe, a solar water heater plastic liner adopting the embedded pipe and a production method for the solar water heater plastic liner. The plastic embedded pipe comprises a boss, a sealing table, a reinforcing part and a pipe body from top to bottom, wherein the inner wall of the boss and the inner wall of the pipe body form a seal groove. The solar water heater plastic liner adopting the embedded pipe comprises a liner body. The lower part of one side of the liner body is provided with an electric heater containing pipe; the upper part of the other side of the liner body is provided with an exhaust pipe; one side of the lower end of the liner body is provided with a water inlet pipe; and the electric heater containing pipe, the exhaust pipe and the water inlet pipe are the plastic embedded pipe respectively. The solar water heater plastic liner disclosed by the invention has the advantages that (1) the plastic liner is high in toughness and good in sealing property and does not leak air or water under 5MPa container pressure, and torque resistance can reach 18kg; (2) the plastic liner is stable in dimension and low in deformation rate and shrinking percentage; and (3) the plastic liner can be used for a long time at 100 DEG C or higher, and the service life reaches up to at least 20 years.

Description

technical field [0001] The invention belongs to the field of solar water heaters, and relates to a plastic pre-embedded pipe, a plastic liner of a solar water heater using the pre-embedded pipe, and a production method. Background technique [0002] At present, most of the inner tank materials of solar water heaters on the market are made of stainless steel. Stainless steel has good corrosion resistance, but in the process of processing, the joints of the inner tank need to be welded, and the quality of the welded parts affects the anti-corrosion performance of the inner tank. [0003] In some areas of our country, the water quality is relatively poor, and the concentration of chloride ions is high. During use, the stainless steel liner often corrodes at the welding seam, and leakage occurs, which affects the life of the liner. [0004] In view of the corrosion phenomenon of the weld seam of the stainless steel liner, many manufacturers have made plastic liners, and stainles...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L41/08F24J2/46B29C47/92B29C48/92
CPCB29C47/92Y02E10/40
Inventor 于春燕赵敦华牟升智
Owner 青岛港乐新能源有限公司
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