CN214497365U

CN214497365U - Non-pressure flood discharge channel turn section physical model structure

Info

Publication number: CN214497365U
Application number: CN202120257338.0U
Authority: CN
Inventors: 王新强; 王星莉; 柯明辉; 俸维晓; 夏厚兴; 胡朝阳
Original assignee: Fujian Provincial Investigation Design & Research Institute Of Water Conservancy And Hydropower
Current assignee: Fujian Water Resources And Hydropower Survey Design And Research Institute Co ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-10-26
Anticipated expiration: 2031-01-29

Abstract

The utility model discloses a non-pressure flood discharge passageway turn section physical model structure, non-pressure flood discharge passageway turn section physical model structure includes interior wall, outer wall and base. Firstly, selecting a research area according to the actual engineering situation, determining a model test scale lambda, determining a turning section according to a flood discharge channel design drawing, scaling the turning section of the flood discharge channel into the model size according to the model scale lambda, drawing the model sizes of all parts according to the sequence from the upper part to the lower part and from the inside to the outside, and analogizing the operation methods of other turning sections. The purpose of the three layers of ecological wood boards of the base is to ensure that the base has enough supporting force and cannot deform under the action of water flow, and the acrylic boards are bonded on the uppermost part to prevent water seepage of the wood boards and ensure the roughness of the model, so that the molding time is saved, and the radian, the perpendicularity and the surface smoothness of the flood discharge channel section are accurately simulated.

Description

Non-pressure flood discharge channel turn section physical model structure

Technical Field

The utility model belongs to the technical field of hydraulic model, concretely relates to non-pressure flood discharge passageway turn section physical model structure.

Background

For some special hydraulic engineering, a hydraulic model test needs to be carried out to verify the reasonability and reliability of the engineering. The hydraulic model test process generally comprises model making, model installation, test data measurement and the like, wherein the model making and installation are the most basic work, and the similarity of the model can be ensured only by accurate model making and installation, so that test data closer to the reality can be obtained, and engineering service can be better realized.

There are some hydraulic models of flood-discharge sections that have an angular turn, and the conventional manufacturing method for this type of hydraulic model is: firstly, scaling the actual size of a building into the size of a model according to a model scale and arranging a lofting section; then drawing a lofting section, manufacturing the lofting section by using a plurality of methods, and arranging the lofting section in a model area; and finally, plastering the well laid model by using cement mortar. The most important thing is that the accuracy of radian, verticality, surface smoothness and the like of the manufactured model bending section is low, and large errors are easy to occur.

Disclosure of Invention

(1) Technical scheme

In order to overcome prior art not enough, the utility model provides a non-pressure flood discharge passageway turn section physical model structure, non-pressure flood discharge passageway turn section physical model structure includes interior wall, outer wall and base, the interior wall with through base fixed connection between the bottom of outer wall, interior wall thickness is D_nHeight of H_nThe corresponding central angle is n degrees, and the radius of one side of the inner wall close to the center of the circle is R_nwThe radius of one side of the inner wall far away from the circle center is R_nlThe length of the inner wall at the side far away from the circle center is L_nl＝n×π×R_nl180 degrees; the outer partWall thickness D_wHeight of H_nThe corresponding central angle is n degrees, and the radius of one side of the outer wall close to the central angle is R_wlThe radius of one side of the outer wall far away from the circle center is R_nwThe length of the outer wall close to one side of the circle center is L_wl＝n×π×R_wl180 degrees; the length of one side of the base close to the inner wall is L_nlThe length of one side close to the outer wall is L_wlWidth B_d＝R_wl-R_nl(ii) a And a fixer is arranged at the turning section of the pressureless flood discharge channel, the shape of the fixer is a groove-shaped structure with three sides connected and one side opened, the width between the outer edge and the inner edge is 3cm, and the height is H consistent with the height of the inner wall and the outer wall_nThe clear width of the interior is the sum of the widths of the inner wall, the outer wall and the base, namely B_g＝B_d+D_n+D_w。

Further, the inner wall and the outer wall are prepared by acrylic plates, and the thickness of the acrylic plate is 0.6 cm.

Further, in order to prevent water leakage and ensure the consistency of the roughness of the model, the material of the contact surface of the base and the water flow is prepared by an acrylic plate, the supporting material of the base is prepared by an ecological wood plate with the thickness of 1.7cm, and the fixer is prepared by the acrylic plate.

Furthermore, glass cement is coated on the bottoms of the inner wall and the outer wall to be fixedly connected with the base, so that the water leakage prevention and reinforcing effects are achieved, and then the inner wall and the connecting ends of the outer wall and the base are fixed through screws.

The design principle of the utility model is as follows: firstly, selecting a research area according to the actual engineering situation, determining a model test scale lambda, determining a turning section according to a flood discharge channel design drawing, numbering

turning sections

1, 2, 3 and … from upstream to downstream of each turning end in sequence, scaling the turning section of the flood discharge channel into the model size according to the model scale lambda, drawing the model sizes of all parts according to the sequence from the upper part to the lower part and from the inside to the outside, and analogizing the operation methods of other turning sections. Because the base is formed by bonding three layers of ecological wood boards with the thickness of 1.7cm and one layer of acrylic boards with the thickness of 0.6cm, the three layers of ecological wood boards aim to ensure that the base has enough supporting force and cannot deform under the action of water flow, the acrylic boards are bonded on the uppermost part in order to prevent water seepage of the wood boards and ensure the roughness of a model, so that the molding time is saved, and the radian, the verticality and the surface smoothness of a flood discharge channel section are accurately simulated.

(2) Advantageous effects

The utility model has the advantages that: the utility model discloses according to the engineering actual conditions, the selective research region, and confirm the experimental scale lambda of model, according to flood discharge passageway design drawing, confirm turn section wherein, the ecological plank purpose of three-layer guarantees that the base has sufficient holding power, can not warp under the rivers effect, the inferior gram force board of upper portion bonding is in order to prevent the plank infiltration and guarantee the model roughness, thereby save the mould time, accurately simulate the radian of flood discharge passageway section, hang down straightness and surface smoothness, the simulation is accurate, therefore, the clothes hanger is strong in practicability, and has better popularization and application value.

Drawings

FIG. 1 is a schematic structural diagram of a circular arc segment physical model for a hydraulic physical model test;

FIG. 2 is a schematic top view of a circular arc segment physical model for a hydraulic physical model test;

FIG. 3 is a schematic structural diagram of a cross section and a longitudinal section of a circular arc segment physical model for a hydraulic physical model test.

Detailed Description

The present invention will be further described with reference to the following examples.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Example one

As shown in fig. 1 to 3, the present embodiment provides a physical model structure of a turning section of a non-pressure flood discharge channel, the physical model structure of the turning section of the non-pressure flood discharge channel includes an inner wall 1, an outer wall 2 and a base 3, the inner wall 1 and the bottom of the outer wall 2 are fixedly connected through the base 3, and the inner wall 1 has a thickness D_nHeight of H_nThe corresponding central angle is n degrees, and the radius of one side of the inner wall 1 close to the center of the circle is R_nwThe radius of one side of the inner wall 1 far away from the circle center is R_nlThe length of the inner wall 1 at the side far away from the circle center is L_nl＝n×π×R_nl180 degrees; the thickness of the outer wall 2 is D_wHeight of H_nThe corresponding central angle is n degrees, and the radius of one side of the outer wall 2 close to the central angle is R_wlThe radius of one side of the outer wall 2 far away from the circle center is R_nwThe length of the outer wall 2 close to one side of the circle center is L_wl＝n×π×R_wl180 degrees; the length of the base 3 close to one side of the inner wall 1 is L_nlThe length of the side close to the outer wall 2 is L_wlWidth B_d＝R_wl-R_nl(ii) a And a fixer 5 is arranged at the turning section of the pressureless flood discharge channel, the shape of the fixer 5 is a groove-shaped structure with three sides connected and one side opened, the width between the outer edge and the inner edge is 3cm, and the height is H consistent with the height of the inner wall and the outer wall_nThe clear width of the interior is the sum of the widths of the inner wall 1, the outer wall 2 and the base 3, namely B_g＝B_d+D_n+D_w。

In this embodiment, the inner wall 1 and the outer wall 2 are prepared by using acrylic plates 6, the acrylic plates 6 have a thickness of 0.6cm, in order to prevent water leakage and ensure the consistency of roughness of the model, the base 3 is prepared by using acrylic plates 6 as a material of a water flow contact surface, the base 3 is prepared by using ecological wood plates 7 having a thickness of 1.7cm as a support material, the fixer 5 is prepared by using acrylic plates 6, the inner wall 1 and the outer wall 2 are fixedly connected to the base 3 by applying glass cement to the bottom thereof to prevent water leakage and reinforce the water leakage, and then the inner wall 1 and the outer wall 2 are fixed to the base 3 by screws.

Firstly, selecting a research area according to the actual engineering situation, determining a model test scale lambda, determining a turning section according to a flood discharge channel design drawing, numbering

turning sections

1, 2, 3 and … from upstream to downstream of each turning end in sequence, scaling the turning section of the flood discharge channel into the model size according to the model scale lambda, drawing the model sizes of all parts according to the sequence from the upper part to the lower part and from the inside to the outside, and analogizing the operation methods of other turning sections. Because the base 3 is formed by bonding three layers of ecological wood boards 7 with the thickness of 1.7cm and one layer of acrylic boards 6 with the thickness of 0.6cm, the three layers of ecological wood boards 7 aim to ensure that the base has enough supporting force and cannot deform under the action of water flow, and the acrylic boards 6 are bonded on the uppermost part to prevent the water seepage of the wood boards and ensure the roughness of a model, thereby saving the time for making the model and accurately simulating the radian, the verticality and the surface smoothness of a flood discharge channel section.

The above-mentioned embodiments only represent the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, modifications and substitutions can be made, which are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a non-pressure flood discharge passageway turn section physical model structure, non-pressure flood discharge passageway turn section physical model structure includes interior wall (1), outer wall (2) and base (3), interior wall (3)1) And the bottom of the outer wall (2) is fixedly connected with the bottom of the outer wall through a base (3), and the inner wall (1) is characterized in that the thickness is D_nHeight of H_nThe corresponding central angle is n degrees, and the radius of one side of the inner wall (1) close to the center of the circle is R_nwThe radius of one side of the inner wall (1) far away from the circle center is R_nlThe length of the inner wall (1) at the side far away from the circle center is L_nl＝n×π×R_nl180 degrees; the thickness of the outer wall (2) is D_wHeight of H_nThe corresponding central angle is n degrees, and the radius of one side of the outer wall (2) close to the center of the circle is R_wlThe radius of one side of the outer wall (2) far away from the circle center is R_nwThe length of the outer wall (2) close to one side of the circle center is L_wl＝n×π×R_wl180 degrees; the length of the base (3) close to one side of the inner wall (1) is L_nlThe length of one side close to the outer wall (2) is L_wlWidth B_d＝R_wl-R_nl(ii) a And a fixer (5) is arranged at the turning section of the pressureless flood discharge channel, the shape of the fixer (5) is a groove-shaped structure with three sides connected and one side opened, the width between the outer edge and the inner edge is 3cm, and the height is H consistent with the height of the inner wall and the outer wall_nThe clear width of the interior is the sum of the widths of the inner wall (1), the outer wall (2) and the base (3), namely B_g＝B_d+D_n+D_w。

2. The pressureless spillway turnaround physical model structure of claim 1, wherein: the inner wall (1) and the outer wall (2) are prepared by using acrylic plates (6), and the thickness of each acrylic plate (6) is 0.6 cm.

3. The pressureless spillway turnaround physical model structure of claim 2, wherein: the base (3) is for preparing through ya keli board (6) with the material of rivers contact surface, the supporting material of base (3) forms through the preparation of ecological plank (7) of 1.7cm thickness, fixer (5) adopt ya keli board (6) to prepare and form.

4. The pressureless spillway turnaround physical model structure of claim 1, wherein: and (3) coating glass cement on the bottoms of the inner wall (1) and the outer wall (2) to fixedly connect the bases (3), and then fixing the connecting ends of the inner wall (1) and the outer wall (2) and the bases (3) through screws.