CN110197023A

CN110197023A - A kind of pipe mother slides the optimization method and MGG1-200 pipe mother sliding fitting of fitting

Info

Publication number: CN110197023A
Application number: CN201910428641.XA
Authority: CN
Inventors: 王欣欣; 路峰; 赵普志; 郑义; 雷鸣; 何成; 马勤勇; 李伟; 游溢; 刘阳; 徐凯; 王宗江; 晏致涛; 余国庆; 刘欣鹏
Original assignee: Chongqing University; State Grid Corp of China SGCC; Electric Power Research Institute of State Grid Xinjiang Electric Power Co Ltd
Current assignee: Chongqing University; State Grid Corp of China SGCC; Electric Power Research Institute of State Grid Xinjiang Electric Power Co Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2019-09-03
Anticipated expiration: 2039-05-22
Also published as: CN110197023B

Abstract

The optimization method of fitting is slided the invention discloses a kind of pipe mother and MGG1-200 pipe mother slides fitting, can be effectively reduced the MGG1-200 pipe mother under the effect of extreme weather high wind and be slided the stress that fitting is subject to, reduce fitting operational failure, the possibility of strength failure.Data needed for optimization method includes: S1, obtains optimization；S2, the model for establishing downlead, pipe busbar system, and calculate the load action that fitting is transmitted by downlead, pipe busbar system；S3, the 3D geometrical model for establishing fitting；S4, the 3D geometrical model for the fitting established in S3 is imported to grid division in ANSYS software, and the load that load step S2 is calculated, then carries out static analysis；S5, according to the static analysis in S4 as a result, optimization fitting pedestal, chute size.A kind of MGG1-200 pipe mother sliding fitting, for fitting chute of base upper wall with a thickness of 20mm, sliding slot height is 26mm, track length 110mm.

Description

A kind of pipe mother slides the optimization method and MGG1-200 pipe mother sliding fitting of fitting

Technical field

The present invention relates to substation's technical field, more particularly to a kind of pipe mother slide fitting optimization method and MGG1-200 pipe mother slides fitting.

Background technique

MGG1-200 pipe mother used at present slides fitting during use, only carried out according to specification type experiment and Beam test.But in use, high wind weather can be such that fitting is passed by downlead under special geographical environment and climatic environment Carry out biggish wind action, the deformation and destruction for causing fitting occur often.

Summary of the invention

It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of pipe mother slide fitting optimization method and MGG1-200 pipe mother slides fitting, and this patent method can effectively reduce the MGG1-200 pipe mother under the effect of extreme weather high wind and slide The stress that fitting is subject to reduces fitting operational failure, the possibility of strength failure.

The object of the present invention is achieved like this:

A kind of pipe mother sliding fitting optimization method, comprising the following steps:

S1, the required data of optimization is obtained, comprising: pipe mother slides fitting and uses the annual maximum wind velocity on ground；With pipe capital Have the geometric dimension and material characteristic parameter of associated pipe bus and downlead；The design drawing of fitting；

S2, according to the parameter of pipe bus and downlead in step S1, establish the model of downlead, pipe busbar system, and Calculate the load action that fitting is transmitted by downlead, pipe busbar system；

S3, the 3D geometrical model for establishing fitting；

S4, the 3D geometrical model for the fitting established in S3 is imported to grid division in ANSYS software, and load step S2 is counted Obtained load, then carry out static analysis；

S5, according to the static analysis in S4 as a result, optimization fitting pedestal, chute size.

Preferably, in step S2, the model of downlead, pipe busbar system is established using ANSYS software APDL language.

Preferably, in step S3, using Space Claim software Geometric Modeling, the 3D geometrical model of fitting is established.

Preferably, further includes: static analysis step S6, is carried out to the fitting model after optimization.

A kind of MGG1-200 pipe mother sliding fitting, for fitting chute of base upper wall with a thickness of 20mm, sliding slot height is 26mm, sliding Slot length is 110mm.

By adopting the above-described technical solution, increasing fitting sliding slot upper arm present invention decreases the design gaps of fitting Thickness is modeled using FEM-software ANSYS, analyzes the typical condition under different wind speed, and it is big to effectively reduce fitting stress It is small, reduce fitting operational failure, the possibility of strength failure.

Detailed description of the invention

Fig. 1 is that MGG1-200 pipe mother slides fitting front view and side view；

Fig. 2 is that MGG1-200 pipe mother slides fitting body dimension mark figure；

Fig. 3 is that MGG1-200 pipe mother slides fitting base dimensions standard drawing；

Fig. 4 is the load schematic diagram of end reaction；

Fig. 5 is fitting stress and deformation schematic diagram；

Fig. 6 is pedestal stress distribution and deformation pattern；

Fig. 7 is the base dimensions schematic diagram after pedestal optimization.

Specific embodiment

A kind of pipe mother slides the optimization method of fitting, including

Pipe capital has mechanical characteristic numerical simulation

Fitting parameter

According to design drawing, the geometric parameter and mechanical property parameters of fitting are as shown in Figure 1-Figure 3:

1 fitting main component of table and its material property

Model parameter

Simulation model is established by ANSYS finite element software, correlation analysis is carried out to it, according to the destruction feelings of realistic case Condition carries out certain simplification to fitting model, reaches effectively succinct simulation model.It is established using Space Claim software several What model, overall model use SOLID187 unit, and bolt outer surface uses osculating element TARGE170 unit, and fitting pedestal is sliding Slot inner surface uses osculating element CONTA174 unit.Contact takes 1 to penalty factor, and initial breakthrough takes 0.2, coefficient of friction value 0.3.The inner surface of fitting ontology and gland connect to form rigid region with fitting external force load(ing) point by MPC184 unit.Bolt Length takes 190mm, and diameter takes 18mm.Model meshes using SMRTSIZE order use size grades for 1 automatic mesh unit It divides.ZLD102 aluminium alloy uses multilinear kinematic hardening rules model according to true test data, and Q235 Steel material uses two-wire Property kinematic hardening model.

Model operating condition and analog result

The operating condition of fitting model be mainly according to obtained pipe mother support of the front tube mother downlead under wind action Node counter-force.The power being applied on fitting includes the concentrated force F1 opposite with gravity direction, horizontal force F2 caused by wind load, and The moment M 1 and torque M2, specific location of pipe mother's axis direction are shown in Fig. 4.Five operating conditions are drawn according to different static(al) wind speed in pipe mother Load obtained in lower line model is applied to the load application point that pipe mother slides fitting, carries out static analysis.The stress of fitting point Cloth is concentrated mainly on chute of base and bolt, sees Fig. 5.It coincide with real case fitting stress deformation position.Main strain regions Domain is concentrated on chute of base, and concrete outcome is shown in Table 2

2 fitting static analysis result of table

The above results are shown, when wind speed reaches 25m/s, the stress that fitting chute of base is subject to has been over surrender pole Limit, begins with biggish plastic deformation, and when wind speed reaches 30m/s, pedestal displacement is 0.246mm, sees Fig. 6 and real case Middle 0.22mm more coincide, and also demonstrates the quasi- true effect of simplified model.Since Xinjiang strong wind area is throughout the year by 5 grades, part 7 The windage of grade, or even have that air port wind-force reaches 8-9 grades, moment maximum wind power is up to 12 grades or so.When wind speed reaches 20m/s It is that fitting is possible to start to surrender above, along with the influence of fluctuating wind, the crack propagation of fitting is caused finally to destroy.Therefore Because pipe mother's connecting tool destruction caused by high wind happens occasionally.

For the generation for reducing fitting malicious event, it is necessary to it is excellent to slide fitting progress structure to existing MGG1-200 pipe mother Change.It is required according to the other function of fitting, while to reduce the modification degree of producer, only fitting chute of base size is made and being repaired Change.

A kind of MGG1-200 pipe mother sliding fitting of optimization, specific prioritization scheme are as follows: thickening fitting chute of base upper wall 3mm reduces sliding slot height to 26mm, reduces track length to 110mm.Specific size is shown in Fig. 7.Equally use the five of different wind speed Kind operating condition carries out static analysis, the results are shown in Table 3.

Fitting static analysis result after the optimization of table 3

The maximum stress of 5 kinds of display of regime chute of base under different wind speed is not up to surrendered, and deflection obviously subtracts It is few.A possibility that reducing fitting crack propagation, extends the service life of fitting, reduces due to pipe mother slides fitting destruction A possibility that caused accident, ensure that the normal operation of converting station electric power system.

Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be Various changes are made to it in form and in details, without departing from claims of the present invention limited range.

Claims

1. a kind of pipe mother slides fitting optimization method, which comprises the following steps:

S1, the required data of optimization is obtained, comprising: pipe mother slides fitting and uses the annual maximum wind velocity on ground；Has phase with pipe capital The geometric dimension and material characteristic parameter of associated pipe bus and downlead；The design drawing of fitting；

S3, the 3D geometrical model for establishing fitting；

S4, the 3D geometrical model for the fitting established in S3 is imported into grid division in ANSYS software, and load step S2 is calculated The load arrived, then carry out static analysis；

2. a kind of pipe mother according to claim 1 slides fitting optimization method, which is characterized in that in step S2, utilize ANSYS software APDL language establishes the model of downlead, pipe busbar system.

3. a kind of pipe mother according to claim 1 slides fitting optimization method, which is characterized in that in step S3, utilize Space Claim software Geometric Modeling, establishes the 3D geometrical model of fitting.

4. a kind of pipe mother according to claim 1 slides fitting optimization method, which is characterized in that further include: it is step S6, right Fitting model after optimization carries out static analysis.

5. a kind of MGG1-200 pipe mother slides fitting, it is characterised in that: fitting chute of base upper wall is with a thickness of 20mm, sliding slot height For 26mm, track length 110mm.