Circulating water tank for fluid mechanics test
By combining the design of the rectification section, contraction section, test section, pressurization section and pressure stabilizing water tank, the problem of high laboratory space requirements due to the length of the circulating water tank is solved, and the uniformity and stability of water flow over short distances are achieved, making it suitable for laboratories with limited space.
Patent Information
- Application Number
- CN202423255360.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-28
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-28
AI Technical Summary
To improve the uniformity and stability of water flow, existing circulating water tanks often require a relatively long length, which places high demands on the space required for the laboratory.
The design employs a combination of rectifying section, contraction section, test section, pressurization section, pressure stabilizing tank and guide vanes. Through multiple turning and rectification measures, the length of the water tank is shortened, ensuring smooth turning and low turbulence of the water flow over a short distance.
It achieves uniform and stable water flow conditions in a limited space, reduces pressure fluctuations in the test section, and improves the uniformity and stability of the flow, making it suitable for experimental environments with limited space.
Smart Images
Figure CN223757171U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fluid mechanics test device technical field, concretely is a kind of fluid mechanics test circulating water tank. BACKGROUND
[0002] Circulating water tank is the test device commonly used in fluid mechanics experiment, its main function is to provide uniform, stable fluid flow environment, to meet the requirement of water flow accuracy and turbulence degree to experiment. Generally circulating water tank needs longer length to improve the uniformity and stability of water flow, which leads to higher space requirement for laboratory site.
[0003] Therefore, how to shorten the length of circulating water tank under the premise of guaranteeing flow quality, adapt to the environment of site limitation, become the key point of technical research and development.
[0004] Therefore, we urgently need to provide a kind of fluid mechanics test circulating water tank. INVENTION CONTENTS
[0005] The utility model aims at providing a kind of fluid mechanics test circulating water tank to solve the problem of higher space requirement for laboratory site caused by the longer length of generally circulating water tank to improve the uniformity and stability of water flow in the above background art.
[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of fluid mechanics test circulating water tank, including straightening section, the left side of the straightening section is connected with contraction section, the left side of the contraction section is connected with test section, the left side of the test section is connected with booster section, the left side of the booster section is connected with pressure stabilizing tank, the inside middle part of the pressure stabilizing tank is installed with guide vane one, the inside front and back sides of the pressure stabilizing tank are installed with guide vane two, the guide vane one and guide vane two are perpendicular to each other, the lower end of the side adjacent to the pressure stabilizing tank and straightening section is connected with connecting pipe, the inside of the connecting pipe is installed with axial flow pump.
[0007] Preferably, the cross-sectional dimension of the left side of the booster section is greater than that of the right side, to slow down the water flow and increase the pressure, thereby ensuring the stability of water flow.
[0008] Preferably, the guide vane one is two groups, and symmetrically distributed in the inside middle part of the pressure stabilizing tank, the water flow from the booster section is shunted to the two sides into the pressure stabilizing tank through the guide vane one, the first turning of water flow is realized through guide, and the pressure fluctuation generated by the direct impact of water flow on wallboard is reduced.
[0009] Preferably, the guide vane two is two groups, and symmetrically distributed in the inside front and back sides of the pressure stabilizing tank, to further guide the water flow downward, realize the second turning of water flow, and enter the inside of the pressure stabilizing tank.
[0010] Preferably, the inside of the constant pressure water tank is further provided with an open hole partition plate, which further rectifies and reduces the pressure fluctuation of the test section.
[0011] Preferably, the guide vane one and the guide vane two are quarter circular arcs in shape, and the two ends are edge treated, so as to reduce the disturbance to the streamline and improve the uniformity of the water flow.
[0012] Preferably, the connecting pipe is fixedly installed with a support on the outside, and the bottom of the support is fixedly installed with a shock absorbing rubber block, adjacent two connecting pipes are connected through a flange soft connection, and the inside of the flange soft connection is installed with rubber.
[0013] Compared with the prior art, the utility model has the beneficial effects that:
[0014] 1. The fluid mechanics test circulating water tank greatly shortens the length of the water tank compared with the traditional circulating water tank, is suitable for the experimental environment with limited space, and solves the problem that the general circulating water tank needs a long length in order to improve the uniformity and stability of the water flow, thereby causing high space requirements for the laboratory site.
[0015] 2. The fluid mechanics test circulating water tank realizes the smooth turning of the water flow in a short distance through the arrangement of the constant pressure water tank and the multiple guide vanes, provides a low turbulence water flow condition for the fluid mechanics experiment, effectively reduces the test section pressure fluctuation problem caused by the short booster section, and further improves the uniformity of the flow. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a whole structure schematic view of the utility model;
[0017] Figure 2 It is a structure schematic view of the connection between the booster section and the constant pressure water tank of the utility model;
[0018] Figure 3 It is an internal structure schematic view of the constant pressure water tank of the utility model;
[0019] Figure 4 It is an internal structure schematic view of the rectifier section of the utility model;
[0020] Figure 5 It is a split view of the connection between the connecting pipe and the axial flow pump of the utility model.
[0021] In the drawing: 1, rectifier section; 2, contraction section; 3, test section; 4, booster section; 5, constant pressure water tank; 6, guide vane one; 7, guide vane two; 8, connecting pipe; 9, axial flow pump; 10, open hole partition plate. DETAILED DESCRIPTION
[0022] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
[0023] Please refer to Figures 1-5The utility model provides a technical scheme: a fluid mechanics test circulating water tank, including straightening section 1, be located in the area of test section 3 upstream, for eliminating the disorder component in water flow, through the straightening measure realization flow's stability, make water flow's turbulence degree less than 1%, reduce turbulence to the interference of test, the left side of straightening section 1 is connected with contraction section 2, and contraction section 2 is located in the upstream of straightening section 1, and water flow is accelerated through cross section reduction, and even water flow speed distribution is formed, and stable input is provided for subsequent test section 3, and the left side of contraction section 2 is connected with test section 3, and the core area for carrying out fluid mechanics experiment, and the uniformity and turbulence degree of water flow reach the requirement in this area, to ensure the reliability of experimental data, and the left side of test section 3 is connected with booster section 4, and the expansion angle of booster section 4 is less than or equal to 5 DEG, and the cross section size of the left side of booster section 4 is greater than the cross section size of the right side, and water flow is slowed down, and pressure is increased, to ensure the stability of water flow, make the water flow control in 0.05-0.5m / s, the left side of the pressurizing section 4 is connected with a pressure stabilizing tank 5, the pressure stabilizing tank 5 is further provided with an open hole partition plate 10 inside, the open hole partition plate 10 further rectifies, reduces the pressure fluctuation of the test section 3, the open hole partition plate 10 is distributed inside the rectifying section 1 and inside the pressure stabilizing tank 5, under the action of the axial flow pump 9, the water flow speed of the two end open hole partition plates 10 is the same when the water flow circulates, a guide vane one 6 is installed in the middle of the pressure stabilizing tank 5, the guide vane one 6 is two groups and is symmetrically distributed on the front and back two sides of the middle of the pressure stabilizing tank 5, the water flow from the pressurizing section 4 is divided into two sides into the pressure stabilizing tank 5 through the guide vane one 6, the first turning of the water flow is realized through the guide, the pressure fluctuation generated by the direct impact of the water flow on the wall plate is reduced, guide vanes two 7 are installed on the front and back two sides of the pressure stabilizing tank 5, the guide vanes two 7 are two groups and are symmetrically distributed on the front and back two sides of the pressure stabilizing tank 5, the water flow is further guided downward, the second turning of the water flow is realized, the water flow enters the inside of the pressure stabilizing tank 5, the guide vane one 6 and the guide vanes two 7 are perpendicular to each other, the guide vane one 6 and the guide vanes two 7 are quarter circular arcs in shape and the two ends are edge treated to reduce the disturbance to the flow line, improve the uniformity of the water flow, a connecting pipe 8 is connected to the lower end of the side adjacent to the rectifying section 1 of the pressure stabilizing tank 5, a support is fixedly installed outside the connecting pipe 8 and rubber is fixedly installed at the bottom of the support, the support supports the connecting pipe 8 and reduces the vibration of the support and the ground through the shock absorbing rubber block, avoids the vibration of the support and the ground caused by the axial flow pump 9 when working, improves the stability of the connecting pipe 8, the adjacent two connecting pipes 8 are connected through flange soft connection and rubber is installed inside the flange soft connection, the connecting place of the two connecting pipes 8 is buffered through the rubber to avoid excessive shaking of the connecting place, the axial flow pump 9 is installed inside the connecting pipe 8, the water flow in the pressure stabilizing tank 5 is circulated into the rectifying section 1 through the axial flow pump 9 to realize the circulating flow of the water, a wire hole is formed on the surface of the connecting pipe 8, the wire of the axial flow pump 9 is led out through the wire hole of the gland and is connected with the frequency converter, the frequency converter is connected with the 5G mobile phone and the PC terminal through the radio frequency line of the DTU, the speed of the axial flow pump 9 is controlled through the mobile phone and the PC terminal, the flow of the axial flow pump 9 is adjusted.
[0024] In use, the water flow enters the pressure stabilizing tank 5 from the rectifying section 1, the contraction section 2, the test section 3 and the pressurizing section 4, the water flow from the pressurizing section 4 is divided into two sides into the pressure stabilizing tank 5 through the guide vane one 6, the first turning of the water flow is realized through the guide, the pressure fluctuation generated by the direct impact of the water flow on the wall plate is reduced, the water flow is further guided downward by the guide vanes two 7, the second turning of the water flow is realized, the water flow enters the inside of the pressure stabilizing tank 5, the open hole partition plate 10 is matched, further rectification is realized, the stable turning of the short distance water flow is realized, the low turbulence water flow condition is provided for the fluid mechanics experiment.
[0025] It is to be noted that, as used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component" can include a combination of two or more components. Additionally, the terms "comprise," "comprises," and "comprising," or any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, unless otherwise indicated herein, the terms "first," "second," "third," etc., are not intended to denote a physical order, quantity, or importance, but rather are used for the purpose of nomenclature.
Claims
1. A hydrodynamic test recirculating flume comprising a straightening section (1), characterised in that: The left side of the rectifying section (1) is connected with the contraction section (2), the left side of the contraction section (2) is connected with the test section (3), the left side of the test section (3) is connected with the booster section (4), the left side of the booster section (4) is connected with the pressure stabilizing tank (5), the inside middle part of the pressure stabilizing tank (5) is mounted with the guide vane one (6), the inside front and back sides of the pressure stabilizing tank (5) are mounted with the guide vane two (7), the guide vane one (6) and the guide vane two (7) are perpendicular to each other, the side adjacent to the rectifying section (1) of the pressure stabilizing tank (5) is connected with the connecting pipe (8) at the lower end, the inside of the connecting pipe (8) is mounted with the axial flow pump (9).
2. A hydrodynamic test recirculating flume according to claim 1, characterized in that: The cross-sectional size of the left side of the booster section (4) is larger than that of the right side.
3. A hydrodynamic test recirculating flume according to claim 1, wherein: The guide vane one (6) is two groups and is symmetrically distributed inside the middle part of the pressure stabilizing tank (5).
4. A hydrodynamic test recirculating flume according to claim 1, wherein: The guide vane two (7) is two groups and is symmetrically distributed inside the middle part of the pressure stabilizing tank (5).
5. A hydrodynamic test recirculating flume according to claim 1, wherein: The inside of the pressure stabilizing tank (5) is further provided with the open hole partition plate (10).
6. A hydrodynamic test recirculating flume according to claim 1, characterized in that: The guide vane one (6) and the guide vane two (7) are quarter circular arcs in shape and are edge treated at both ends.
7. A hydrodynamic test recirculating flume according to claim 1, wherein: The outside of the connecting pipe (8) is fixedly mounted with the support, the bottom of the support is fixedly mounted with the shock absorbing rubber block, the adjacent two connecting pipes (8) are connected through the flange, and the inside of the flange is mounted with the rubber.