Connecting pipe reinforcement calculation method capable of simultaneously bearing internal pressure and external pressure
A calculation method and a technology for connecting and strengthening, which can be applied in complex mathematical operations and other directions, and can solve the problems that the related design of pressure vessels needs to be further improved, and calculation methods are not given.
Pending Publication Date: 2020-08-07
HARBIN BOILER
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Problems solved by technology
[0002] GB150.3 has given a relatively mature calculation method for the reinforcement calculation of the opening of the boiler shell and head, but the calculation method has not been given for the force form of the connecting pipe that is simultaneously subjected to internal pressure and external pressure. For pressure vessels, The design needs to be further improved
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[0061] The present invention will be described in further detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation is provided, but the protection scope of the present invention is not limited to the following embodiments.
[0062] like Figure 1 to Figure 3 As shown, a method for calculating reinforcement of a connecting pipe subjected to both internal pressure and external pressure involved in this embodiment includes:
[0063] (1) According to the internal pressure of the connecting pipe, calculate the calculated thickness required for the connecting pipe;
[0064] (2) The sum of the inner diameter of the connecting pipe and twice the calculated thickness of the connecting pipe is taken as the opening diameter d of the cylinder body op ;
[0065] (3) press d op Calculate the reinforcement area required for the opening;
[0066] (4) pres...
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The invention discloses a connecting pipe reinforcement calculation method simultaneously subjected to internal pressure and external pressure, and belongs to the technical field of pressure vessel reinforcement calculation methods. The invention provides a reinforcement calculation method aiming at the existing stress form that a connecting pipe is subjected to internal pressure and external pressure at the same time. One structural form of the algorithm is as follows: one cylinder body bears internal pressure Pw, a hole is formed in the cylinder body (a cylindrical or spherical structure), aconnecting pipe is welded at the hole, the internal pressure borne by the connecting pipe is Pn (Pn is greater than or equal to 0), and the internal pressure Pw of the cylinder body acts on the outerpart of the connecting pipe. The method comprises the following steps: 1, calculating the required calculation thickness of the connecting pipe according to the internal pressure borne by the connecting pipe; 2, taking the sum of the inner diameter of the connecting pipe and the calculated thickness of the double connecting pipe as the tapping diameter dop of the cylinder body; 3, calculating a reinforcing area required by tapping according to the dot; 4, calculating the redundant metal area A1 of the barrel according to the dot; 5, subtracting the calculated thickness from the nominal thickness of the connecting pipe to serve as the redundant metal area A2 of the connecting pipe. The invention is mainly applied to pressure vessel equipment, coiled pipe high-pressure heater and the like.
Description
technical field [0001] The invention relates to a reinforcement calculation method for a connecting pipe subjected to internal pressure and external pressure simultaneously, and belongs to the technical field of pressure vessel reinforcement calculation methods. Background technique [0002] GB150.3 has given a relatively mature calculation method for the reinforcement calculation of the opening of the boiler shell and head, but the calculation method has not been given for the force form of the connecting pipe that is simultaneously subjected to internal pressure and external pressure. For pressure vessels, The design needs to be further improved. Contents of the invention [0003] The object of the present invention is to solve the above-mentioned problems in the prior art, and further provide a method for calculating the reinforcement of a joint under internal pressure and external pressure at the same time. [0004] The purpose of this invention is to realize through ...
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IPC IPC(8): G06F17/10
CPCG06F17/10
Inventor 唐卉张福君刘铁映国金莲杨军王良超王广林刘学张志鹏邱平张小波刘瑞梅刘博刘忠平江号叶邓健虹李凤梅
Owner HARBIN BOILER