Bursting pressure prediction method and device
A technology of burst pressure and composite pipe, which is applied in the fields of instruments, electrical digital data processing, computer-aided design, etc., and can solve problems such as unfavorable popularization and use, complicated calculation and derivation process, etc.
Pending Publication Date: 2020-09-15
BC P INC CHINA NAT PETROLEUM CORP +3
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The embodiment of the present invention provides a method and device for predicting blast pressure to solve the problem that the calculation and derivation process of the related technology is complicated and unfavorable for popularization and use
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0069] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0070] The embodiment of the present application provides a method for predicting the burst pressure, such as figure 1 As shown, the method includes:
[0071] Step 101, obtain the instantaneous burst pressure of the composite pipe, wherein the inner and outer layers of the composite pipe are both polyethylene, the middle layer of the composite pipe is a glass fiber tape, and the glass fiber tape at least includes glass fibers.
[0072] Among them, the composite pipe refers to the glass fiber tape reinforced polyethylene composite pipe (hereinafter referred to as the composite pipe), such as figure 2 As shown, the material used for the inner and outer layers of the composite pipe is polyethylene, and the material used for the middle l...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a bursting pressure prediction method and device, and belongs to the technical field of composite pipe manufacturing. The method comprises the steps of obtaining the instantaneous bursting pressure of the composite pipe; obtaining a first relationship between the relaxation modulus of the polyethylene at the reference temperature and time, and obtaining an initial relaxation modulus of the polyethylene based on the first relationship; obtaining the elasticity modulus of the glass fiber; obtaining the volume fraction of the glass fibers in the composite pipe; According to the instantaneous bursting pressure, the first relationship, the initial relaxation modulus of polyethylene, the elasticity modulus of the glass fibers and the volume fraction of the glass fibers inthe composite pipe, obtaining a prediction relationship between the bursting pressure and time, and determining the bursting pressure of the composite pipe at the reference time based on the prediction relationship. Prediction of the bursting pressure is achieved through the prediction relation, all parameters in the prediction relation can be obtained instantly through experiments, the prediction process is simple and convenient, and popularization is convenient. The prediction method can be applied to glass fiber tape reinforced polyethylene composite pipes of various specifications, and iswide in applicability.
Description
technical field [0001] The invention relates to the technical field of composite pipe manufacture, in particular to a method and device for predicting burst pressure. Background technique [0002] With the continuous development of RTP (Reinforced Thermoplastic Pipe, reinforced thermoplastic composite pipe) manufacturing technology, RTP is widely used in daily life, and glass fiber tape reinforced polyethylene composite pipe is one of them. Among them, before the glass fiber tape reinforced polyethylene composite pipe is put into use, it is often necessary to predict its burst pressure. [0003] Related technologies provide a method for predicting burst pressure. The method first obtains a three-layer stress sub-model, and the three-layer stress sub-model corresponds to the inner layer of polyethylene, the middle layer of glass fiber tape, and the polythene Vinyl exterior. Then, the three-layer sub-models are combined to obtain the stiffness matrix model of the middle laye...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G06F30/20G06F113/14
Inventor 宋鹏郑津洋范玉然施建峰姚登樽聂新宇范铁刚王琳
Owner BC P INC CHINA NAT PETROLEUM CORP