Detection control method and device of inner-coating thickness of rotational molding storage tank

A thickness detection and inner cladding technology is applied in the field of online detection and control of the inner cladding thickness of storage tanks, and the detection and control method and device of the inner cladding thickness of rotomolded storage tanks, which can solve the problems of inability to precisely control the uniformity of wall thickness, etc. Achieve the effect of improving labor safety, strong anti-interference and high adaptability

Inactive Publication Date: 2013-08-28
无锡新开河储罐有限公司 +1
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  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the existing rotomolding thickness detection mainly relies on manual visual inspection to accurately control the uniformity of the wall thickness, and creatively apply the laser thickness gauge to the real-time detection of the wall thickness in the rotomolding process, through Automatically adjust the flow rate of the gas nozzle whose deviation is greater than the corresponding area of ​​the set value to adjust the wall thickness of the molding, that is, the present invention provides a detection device and control method for the thickness of the inner coating of a rotomolded storage tank, and also provides a corresponding complete set of detection device to overcome the disadvantages of prior art

Method used

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  • Detection control method and device of inner-coating thickness of rotational molding storage tank
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  • Detection control method and device of inner-coating thickness of rotational molding storage tank

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Embodiment 1

[0040] A method for detecting and controlling the thickness of the inner cladding of a rotomolded storage tank, please refer to figure 1 , 2 , 3. To form 80m 3 (Outer diameter 3350mm, total length 10155mm, barrel length 8490mm, wall thickness 35mm) all-plastic horizontal storage tank, the powder used is linear low-density polyethylene (LLDPE) as an example, and its density is between 0.915 and 0.940 g / cubic centimeter between. The method for detecting and controlling the thickness of the inner cladding layer during the forming process of the storage tank includes the following steps:

[0041] [1] According to the theoretical molding thickness of 35mm and surface area of ​​the storage tank, the mass of material to be added is calculated to be 1833kg. If a bag of LLDPE is 25kg, 69.35 bags are required to put the pre-measured plastic material into the cavity.

[0042] [2] According to the design principle that the body length of the storage tank is 8490mm and that a set of no...

Embodiment 2

[0056] Such as Figure 1-2 shown.

[0057] A detection and control device for the inner coating thickness of a rotomolded storage tank, especially a multi-point laser thickness measurement device for a revolving body in high-temperature, closed and dynamic processes such as direct-fired rotomolding, including a laser emitter array 11, a photoelectric conversion Device CCD array 13, processing unit array 12, coupling lens 14, optical fiber emitting fiber and receiving optical fiber 15, collimating lens array 17, light receiving array 18, heat insulating sleeve 16, integrated controller 19, RS232 interface 20, computer 30. The input end of the transmitting fiber 15 is connected with the laser transmitter 11 through the coupling lens 14, the output end 14 of the transmitting optical fiber 15 is connected to the collimating lens 17, and the input end of the receiving optical fiber 15 is connected to the optical receiver 18 through the coupling lens 14, and the optical receiver 18,...

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Abstract

The invention discloses a detection control method and a device of the inner-coating thickness of a rotational molding storage tank. The detection control device comprises a laser emitting device array, a photovoltaic conversion device CCD array, a processing unit array, an integrated controller and the like. The detection control method includes a first step that a computer simultaneously obtains the wall thicknesses of inner coatings of areas corresponding to different gas nozzles of the storage tank through a multipoint laser thickness measurement device, a second step that the computer receives wall thickness signals, works out real-time average thickness of all the areas, and compares the real-time thickness of the area corresponding to each gas nozzle with the real-time average wall thickness to obtain a difference value, and a third step that each wall thickness difference value signal is converted into a corresponding flow signal through a signal processing module, an electric actuating mechanism of a pipeline corresponding to the flow signal is controlled, the valve opening is adjusted, the gas flow is controlled, the condition of powder fusion of one corresponding area is adjusted, and the wall thickness is indirectly controlled. The detection control method and the device of the inner-coating thickness of the rotational molding storage tank improve the forming condition, improve uniformity of the wall thicknesses and relieve labor intensity.

Description

technical field [0001] The present invention relates to a method for detecting and controlling the thickness of a hollow inner coating, in particular to an online detection and control method and device for the thickness of an inner coating of a storage tank during high-temperature, closed, and dynamic rotation processes such as direct-fired rotomolding, specifically The invention relates to a detection and control method and device for the thickness of the inner cladding layer of a rotomolded storage tank. technical background [0002] Rotational molding is a thermoplastic hollow molding method, that is, the powdered polymer is first placed in the mold quantitatively, and the mold rotates on the bracket and swings back and forth perpendicular to it, and the plastic is under the action of gravity and heat. Melt and adhere to the surface of the mold cavity layer by layer, and make plastic products after cooling and shaping. It can be seen that compared with other processes, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/06
Inventor 黄舒韩煜航周建忠王江明陈亮王宏宇盛杰梅於芬
Owner 无锡新开河储罐有限公司
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