CN114705392B - Test equipment for wind displacement resistance strength of mechanical ventilation cooling tower - Google Patents
Test equipment for wind displacement resistance strength of mechanical ventilation cooling tower Download PDFInfo
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- CN114705392B CN114705392B CN202210619834.5A CN202210619834A CN114705392B CN 114705392 B CN114705392 B CN 114705392B CN 202210619834 A CN202210619834 A CN 202210619834A CN 114705392 B CN114705392 B CN 114705392B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/062—Wind tunnel balances; Holding devices combined with measuring arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention relates to the technical field of wind resistance simulation test, in particular to a test device for wind resistance displacement strength of a mechanical ventilation cooling tower, which comprises: the wind meter comprises an inclination testing base, a wind-resistant frame, an inclination monitoring mechanism and a wind meter, wherein the inclination testing base is located under the inclination monitoring mechanism and fixed on the same plane with the wind-resistant frame, the inclination monitoring mechanism comprises a deflection fixed rod, a measurement vertical rod and a clamping assembly, one end of the deflection fixed rod is fixed on the top end of the wind-resistant frame, and the end part of the deflection fixed rod is movably connected with a deflection seat rod. According to the invention, by arranging the miniature model test platform structure, the inclination test base and the inclination monitoring mechanism are utilized to support and position the cooling tower model structure and fix the cooling tower model structure in a wind tunnel experiment scene, and the inclination acting force and the yielding action effect of the cooling tower model under the action of wind power are monitored through the inclination test base and the inclination monitoring mechanism respectively, so that the wind resistance effect of the cooling tower model is comprehensively monitored, and the wind resistance displacement strength of the cooling tower in a real scene is simulated.
Description
Technical Field
The invention relates to the technical field of wind resistance simulation tests, in particular to a test device for wind resistance displacement strength of a mechanical ventilation cooling tower.
Background
In recent years, with the increase of the capacity of a generator set and the implementation of a project of 'big and small' in the power industry, the water spraying area and height of a cooling tower are increased. During this time, a batch of large cooling tower projects that exceed the height limits of specification (190m) emerged. The main body structure of the ultra-large cooling tower is a typical high-rise and thin-wall shell structure, has the characteristics of high flexibility and low natural vibration frequency,
however, in the existing test of the wind displacement resistance of the cooling tower, a plurality of monitoring sensors are attached to the surface of an equal-scale reduction model of the cooling tower, the yield change of the cooling tower in a wind tunnel test is detected by the displacement change of the monitoring sensors in the initial and wind-resistant environments, so that the wind displacement resistance performance of the cooling tower is reflected, the detection means is single, the structure and the material performance of the cooling tower in a wind field can be detected only through the wind tunnel test, no effective detection means exists for the whole structure of the cooling tower, the cooling tower has structural yield resistance under the action of the wind field in an actual application scene, the wind field action can also cause various integral changes such as the inclination of the whole structure of the cooling tower, and the traditional test means has large limitation and cannot accurately reflect the wind resistance performance of the cooling tower.
In view of this, research and improvement are carried out to solve the existing problems, and a test device for testing the wind displacement resistance strength of a mechanical ventilation cooling tower is provided to solve the problem of the existing test limitation, and the purpose of solving the problem and improving the practical value is achieved through the technology.
Disclosure of Invention
The present invention is directed to solving one of the technical problems of the prior art or the related art.
Therefore, the technical scheme adopted by the invention is as follows: a test equipment of mechanical draft cooling tower anti-wind displacement intensity includes: the wind measuring device comprises an inclination measuring base, a wind resisting frame, an inclination monitoring mechanism and a wind meter, wherein the inclination measuring base is located under the inclination monitoring mechanism and fixed on the same plane with the wind resisting frame;
the inclination testing base comprises a fixed base, a telescopic damping rod, an inclination monitoring base, a fixed floating platform and a linkage rod, wherein the linkage rod is connected with the output end of the telescopic damping rod and the ball head of the bottom surface of the fixed floating platform at two ends of the linkage rod, a displacement monitoring guide rail is fixedly mounted on one side of the telescopic damping rod, a sliding block which is slidably mounted on the surface of the displacement monitoring guide rail is arranged on the periphery of the inclination monitoring base, and the inclination monitoring base is movably sleeved on the outer side of an output rod of the telescopic damping rod.
The present invention in a preferred example may be further configured to: embrace and press from both sides the subassembly including being fixed in the cross bed frame of measuring the pole setting bottom and the clamping bar that verts, first connecting rod, second connecting rod and sliding sleeve seat, sliding sleeve seat slides and cup joints in the surface of measuring the pole setting, the both ends of first connecting rod respectively with sliding sleeve seat and the surface swing joint of cross bed frame, the clamping bar movable mounting that verts in the tip of cross bed frame, the both ends of second connecting rod respectively with the surface of first connecting rod and the tip swing joint of the clamping bar that verts.
The present invention in a preferred example may be further configured to: displacement sensor is installed with the inboard equal embedding of measuring the pole setting to the displacement monitoring guide rail, displacement sensor's output electric connection has the controller.
The invention in a preferred example may be further configured to: the top of flexible damping rod is equipped with the ball seat, the ball seat activity cup joints in the inboard of slope monitoring seat, the quantity of flexible damping rod is six and two liang of a set of circumferencial direction evenly distributed in the fixing base surface that is, flexible damping rod is vertical direction and arranges.
The present invention in a preferred example may be further configured to: the wind-resistant frame comprises a supporting angle frame and a lifting rod, the bottom end of the lifting rod is fixedly installed on the surface of the supporting angle frame, the supporting angle frame and the lifting rod are made of light aluminum alloy, titanium alloy or carbon fiber materials, and the supporting angle frame and the lifting rod are of thin bone rod-shaped structures.
The invention in a preferred example may be further configured to: one end of the deflection fixed rod and one end of the deflection seat rod are hinged to each other, a counterweight seat is arranged at the bottom end of the deflection seat rod, and the adjusting frame and the measuring vertical rod are fixedly installed on the surface of the counterweight seat.
The present invention in a preferred example may be further configured to: the anemometer is of an anemometer structure, a sliding groove is formed in the surface of the adjusting frame and is sleeved with a sliding pin, and the top end of the sliding pin is fixed on the surface of the deflection seat rod.
The present invention in a preferred example may be further configured to: the cross bed frame is the bottom that the cross structure and level were fixed in the measurement pole setting, the tip of cross bed frame and the surface of each clamping bar that verts are articulated each other.
The invention in a preferred example may be further configured to: the holding and clamping assembly is a light nano boron fiber or carbon fiber component, and the diameters of the cross-shaped base frame, the tilting clamping rod, the first connecting rod and the second connecting rod are 2-4 mm.
The beneficial effects obtained by the invention are as follows:
1. according to the invention, by arranging the miniature model test platform structure, the inclination test base and the inclination monitoring mechanism are utilized to support and position the cooling tower model structure and fix the cooling tower model structure in a wind tunnel experiment scene, and the inclination acting force and the yielding action effect of the cooling tower model under the action of wind power are monitored through the inclination test base and the inclination monitoring mechanism respectively, so that the wind resistance effect of the cooling tower model is comprehensively monitored, and the wind resistance displacement strength of the cooling tower in a real scene is simulated.
2. According to the invention, through the arrangement of the multi-degree-of-freedom support platform structure, the two ends of the linkage rod are connected with the telescopic damping rod and the ball head of the fixed floating platform to provide multi-directional freedom degrees for the fixed floating platform and the cooling tower model with a fixed surface, and the telescopic damping rod monitors the pressure change of each supporting point of the fixed floating platform so as to accurately reflect the pressure change condition of each side of the cooling tower model in a wind field and accurately estimate the strength requirement of the cooling tower on a foundation part in an actual scene, thereby improving the comprehensiveness of test data and improving the practicability of the test equipment.
3. According to the invention, the periphery of the cooling tower model is clamped and wrapped by the clamping assembly with higher flexibility, the inclination angle change of the tilting clamping rod is reflected to the lifting displacement of the sliding sleeve seat in the wind resistance test, the integral inclination angle of the cooling tower model in the wind resistance test is reflected by the displacement of the sliding sleeve seat, the structure is simple, the wind-affected area is small, and the measurement error caused by the motion of the monitoring structure in the wind field effect is avoided.
Drawings
FIG. 1 is a schematic overall structure diagram of one embodiment of the present invention;
FIG. 2 is a schematic view of a tilt testing base according to an embodiment of the present invention;
FIG. 3 is a schematic view of a pitch monitoring mechanism and anemometer mounting configuration in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of a wind-resistant housing according to an embodiment of the present invention;
FIG. 5 is a schematic view of a deflection yoke mounting arrangement according to an embodiment of the present invention;
FIG. 6 is a schematic view of a mounting structure of a clamping assembly according to an embodiment of the present invention;
fig. 7 is a schematic view of a mounting structure of the anemometer according to an embodiment of the present invention.
Reference numerals:
100. a tilt measuring base; 110. a fixed seat; 120. a telescopic damping rod; 130. a tilt monitoring base; 140. fixing the floating platform; 150. a linkage rod; 121. a displacement monitoring guide rail;
200. a wind-resistant frame; 210. a supporting angle bracket; 220. a lifting rod;
300. a tilt amount monitoring mechanism; 310. a deflection fixed rod; 320. measuring the vertical rod; 330. a clamping component; 311. a deflection seat post; 312. an angular deviation measuring seat; 331. a cross-shaped base frame; 332. tilting the clamping bar; 333. a first link; 334. a second link; 335. a sliding sleeve seat;
400. a wind meter; 410. an adjusting frame.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
The following describes a test device for the wind displacement resistance strength of a mechanical ventilation cooling tower provided by some embodiments of the invention with reference to the accompanying drawings.
Referring to fig. 1-7, the invention provides a device for testing the wind displacement resistance strength of a mechanical draft cooling tower,
specifically, the method comprises the following steps: the wind measuring device comprises an inclination measuring base 100, a wind resisting rack 200, an inclination monitoring mechanism 300 and a wind meter 400, wherein the inclination measuring base 100 is located right below the inclination monitoring mechanism 300 and fixed on the same plane with the wind resisting rack 200, the inclination monitoring mechanism 300 comprises a deflection fixed rod 310, a measuring vertical rod 320 and a clamping assembly 330, one end of the deflection fixed rod 310 is fixed at the top end of the wind resisting rack 200, the end part of the deflection fixed rod 310 is movably connected with a deflection seat rod 311, an angular deflection measuring seat 312 is fixedly installed at the connecting part of the deflection fixed rod 310 and the deflection seat rod 311, the measuring vertical rod 320 is fixedly installed at the bottom end of the deflection seat rod 311, an adjusting rack 410 is movably installed on the surface of the deflection seat rod 311, and the wind meter 400 is fixedly installed at one end of the adjusting rack 410; the inclination testing base 100 comprises a fixed base 110, a telescopic damping rod 120, an inclination monitoring base 130, a fixed floating platform 140 and a linkage rod 150, wherein two ends of the linkage rod 150 are connected with the output end of the telescopic damping rod 120 and the ball head on the bottom surface of the fixed floating platform 140, one side of the telescopic damping rod 120 is fixedly provided with a displacement monitoring guide rail 121, the periphery of the inclination monitoring base 130 is provided with a slide block which is slidably arranged on the surface of the displacement monitoring guide rail 121, and the inclination monitoring base 130 is movably sleeved on the outer side of the output rod of the telescopic damping rod 120; embrace and press from both sides subassembly 330 including being fixed in cross bed frame 331 and the clamping bar 332 that verts of measuring pole 320 bottom, first connecting rod 333, second connecting rod 334 and sliding sleeve seat 335, sliding sleeve seat 335 slides and cup joints in the surface of measuring pole 320, the both ends of first connecting rod 333 respectively with sliding sleeve seat 335 and the surperficial swing joint of cross bed frame 331, the clamping bar 332 swing joint that verts installs in the tip of cross bed frame 331, the both ends of second connecting rod 334 respectively with the surperficial of first connecting rod 333 and the tip swing joint of the clamping bar 332 that verts.
In this embodiment, displacement sensors are embedded in the inner sides of the displacement monitoring guide rail 121 and the measuring vertical rod 320, the output end of each displacement sensor is electrically connected with a controller, and the displacement sensors are used for realizing data acquisition and concentrating on the controllers for data conversion and analysis.
Specifically, displacement sensors embedded in the displacement monitoring guide rail 121 and the inner side of the measurement vertical rod 320 are used for monitoring displacement changes of the sliding blocks and the sliding sleeve seat 335 on each side of the inclination monitoring seat 130 respectively, and the numerical value reflects the inclination amount and the structural deformation amount of the equal-proportion model of the cooling tower in the wind field.
In this embodiment, the top end of the telescopic damping rod 120 is provided with a ball seat, the ball seat is movably sleeved on the inner side of the inclination monitoring seat 130, the number of the telescopic damping rods 120 is six, and every two of the telescopic damping rods 120 are uniformly distributed on the surface of the fixed seat 110 in the circumferential direction, and the telescopic damping rods 120 are arranged in the vertical direction.
Specifically, the change of the expansion amount of the telescopic damping rods 120 is used for reflecting the change of the inclination amount of the fixed floating platform 140, so that the inclination amount of the inclination amount monitoring seat 130 is reflected and displayed on the sliding displacement amount of the inclination amount monitoring seat 130 on the surface of the displacement monitoring guide rail 121 through the connection with the inclination amount monitoring seat 130, and the foundation stress condition of the cooling tower model under the action of a wind field is reflected through the maximum change amount of the displacement and the damping resistance of the telescopic damping rods 120.
In this embodiment, the wind-resistant frame 200 includes a supporting angle bracket 210 and a lifting rod 220, the bottom end of the lifting rod 220 is fixedly installed on the surface of the supporting angle bracket 210, the supporting angle bracket 210 and the lifting rod 220 are made of light aluminum alloy, titanium alloy or carbon fiber material, and the supporting angle bracket 210 and the lifting rod 220 are thin bone rod-shaped structures.
Specifically, one of aluminum alloy, titanium alloy and carbon fiber is used as a structural material of the wind-resistant rack 200, the structural material has the properties of light weight and bending resistance, the wind-resistant rack 200 is prevented from being inclined and changed due to the action of a wind field, the stress action area of the wind-resistant rack 200 is reduced by adopting a thin rod-shaped structure, and the wind-resistant rack 200 is further prevented from being bent due to the action of the wind field.
In this embodiment, one end of the fixed deflection rod 310 and one end of the fixed deflection rod 311 are hinged to each other, the bottom end of the fixed deflection rod 311 is provided with a counterweight seat, and the adjusting frame 410 and the measuring vertical rod 320 are fixedly mounted on the surface of the counterweight seat.
Specifically, the free gravity sag of the deflecting seat rod 311 is realized by using a large-mass counterweight seat at the bottom end of the deflecting seat rod 311, the deflecting seat rod can freely swing under the action of a wind field, and the inclination amount of the deflecting seat rod 311 is monitored by the angular deflection metering seat 312.
In this embodiment, anemometer 400 is an anemometer structure, and the surface of adjusting bracket 410 is provided with a sliding slot and sleeved with a sliding pin, and the top end of the sliding pin is fixed on the surface of deflecting seat post 311.
Specifically, the position of the anemoscope 400 is adjusted by utilizing the deformation of the adjusting frame 410 and the surface sliding adjusting structure of the adjusting frame 410, so that the anemoscope 400 can be arranged behind the cooling tower model, and the wind speed behind the cooling tower model is monitored, so that the wind field acting force of wind generated by the wind tunnel is judged according to the wind difference generated by the wind tunnel.
In this embodiment, the cross base 331 has a cross structure and is horizontally fixed to the bottom end of the measuring vertical rod 320, and the end of the cross base 331 is hinged to the surface of each tilt clamping rod 332.
Further, the holding and clamping assembly 330 is a light nano boron fiber or carbon fiber component, and the cross base frame 331, the tilting clamping rod 332, the first connecting rod 333 and the second connecting rod 334 have diameters of 2-4 mm.
Specifically, utilize nanometer boron fiber or carbon fiber material to reduce material weight, reduce material weight and cause the crooked influence of measuring the structure to adopt the bar-shaped structure of specific diameter size, avoid the measurement interference that the crooked of rod thinness in the wind field and the rod is too thick receives the wind field area of action great and leads to.
The working principle and the using process of the invention are as follows:
in the test equipment for the wind-resistant displacement strength of the mechanical ventilation cooling tower, firstly, a cooling tower equal-scale reduction structure model is fixed on the surface of a fixed floating platform 140, the tilting clamping rods 332 are deflected to enable each tilting clamping rod 332 to be abutted against the edge of the top end of the cooling tower model, an adjusting frame 410 is rotated to enable a wind meter 400 to be located behind one side of the cooling tower model opposite to a wind tunnel, the fixed floating platform 140 is adjusted to be in a horizontal position, values of displacement sensors on the surfaces of a return-to-zero measurement vertical rod 320 and a displacement monitoring guide rail 121 are recorded, and the test is started;
during the test, a wind field generated by the wind tunnel blows to the surface of the cooling tower model, the wind meter 400 positioned behind the cooling tower model monitors the rear wind speed of the cooling tower model so as to judge the wind field acting force of the wind generated by the wind tunnel according to the wind difference generated by the wind tunnel, during the wind field action, when the cooling tower model is inclined, the inclination of the fixed floating platform 140 is realized by the deflection of the coupling rod 150, the telescopic damping rod 120 is pushed to shorten, the inclination of the inclination monitoring seat 130 reacts on the sliding displacement of the side of the inclination monitoring seat 130 on the surface of the displacement monitoring guide rail 121, the foundation stress condition of the cooling tower model under the wind field action is reacted by the maximum displacement and the damping resistance of the telescopic damping rod 120, and the tilting clamping rod 332 and the first connecting rod 333 are acted by the cooling tower model during the inclination of the cooling tower model, so that the tilting clamping rod 332 and the first connecting rod 333 are inclined and deflected, the sliding sleeve seat 335 is linked and lifted on the surface of the measuring vertical rod 320, so that the maximum displacement of the sliding sleeve seat 335 is measured by a displacement sensor embedded in the inner side of the measuring vertical rod 320, the maximum inclination at the top end of the cooling tower model is displayed, and after the test is finished, the inclination of the fixed floating platform 140 is manually measured, so that whether the cooling tower model is subjected to structural deformation under the action of a wind field or not and the size of the structural deformation can be measured, and the whole test is finished.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (8)
1. The utility model provides a test equipment of mechanical draft cooling tower anti-wind displacement intensity which characterized in that includes: an inclination testing base (100), a wind-resistant frame (200), an inclination monitoring mechanism (300) and a wind meter (400), the inclination testing base (100) is positioned right below the inclination monitoring mechanism (300) and is fixed on the same plane with the wind-resistant frame (200), the inclination monitoring mechanism (300) comprises a deflection fixed rod (310), a measurement vertical rod (320) and a clamping component (330), one end of the deflection fixed rod (310) is fixed at the top end of the wind-resistant frame (200), the end part of the deflection fixed rod (310) is movably connected with a deflection seat rod (311), an angular deflection metering seat (312) is fixedly arranged at the joint of the deflection fixed rod (310) and the deflection seat rod (311), the measuring vertical rod (320) is fixedly arranged at the bottom end of the deflecting seat rod (311), an adjusting frame (410) is movably mounted on the surface of the deflection seat rod (311), and the anemometer (400) is fixedly mounted at one end of the adjusting frame (410);
the inclination testing base (100) comprises a fixed seat (110), a telescopic damping rod (120), an inclination monitoring seat (130), a fixed floating platform (140) and a linkage rod (150) of which two ends are connected with the output end of the telescopic damping rod (120) and the bottom ball of the fixed floating platform (140), wherein a displacement monitoring guide rail (121) is fixedly installed on one side of the telescopic damping rod (120), a sliding block which is installed on the surface of the displacement monitoring guide rail (121) in a sliding mode is arranged on the periphery of the inclination monitoring seat (130), and the inclination monitoring seat (130) is movably sleeved on the outer side of an output rod of the telescopic damping rod (120);
embrace and press from both sides subassembly (330) including being fixed in cross bed frame (331) of measuring pole setting (320) bottom and tilting clamping bar (332), first connecting rod (333), second connecting rod (334) and slip cap seat (335), slip cap seat (335) slip cup joint in the surface of measuring pole setting (320), the both ends of first connecting rod (333) respectively with the surface swing joint of slip cap seat (335) and cross bed frame (331), tilting clamping bar (332) movable mounting is in the tip of cross bed frame (331), the both ends of second connecting rod (334) respectively with the surface of first connecting rod (333) and the tip swing joint of tilting clamping bar (332).
2. The mechanical draft cooling tower anti-wind displacement strength test device according to claim 1, wherein displacement sensors are embedded and mounted on the inner sides of the displacement monitoring guide rail (121) and the measuring vertical rod (320), and the output ends of the displacement sensors are electrically connected with a controller.
3. The mechanical draft cooling tower wind displacement strength test equipment according to claim 1, wherein a ball seat is arranged at the top end of the telescopic damping rod (120), the ball seat is movably sleeved on the inner side of the inclination monitoring seat (130), the number of the telescopic damping rods (120) is six, every two of the telescopic damping rods are in a group, the groups are uniformly distributed on the surface of the fixed seat (110) in the circumferential direction, and the telescopic damping rods (120) are arranged in the vertical direction.
4. The mechanical draft cooling tower wind displacement resistance strength test device according to claim 1, wherein the wind resistance frame (200) comprises a support angle bracket (210) and a lifting rod (220), the bottom end of the lifting rod (220) is fixedly installed on the surface of the support angle bracket (210), the support angle bracket (210) and the lifting rod (220) are made of light aluminum alloy, titanium alloy or carbon fiber materials, and the support angle bracket (210) and the lifting rod (220) are in a thin bone rod-shaped structure.
5. The mechanical draft cooling tower wind displacement resistance strength test device according to claim 1, wherein one end of the deflection fixed rod (310) and one end of the deflection seat rod (311) are hinged to each other, a counterweight seat is arranged at the bottom end of the deflection seat rod (311), and the adjusting frame (410) and the measuring vertical rod (320) are fixedly installed on the surface of the counterweight seat.
6. The mechanical draft cooling tower anti-wind displacement strength test device according to claim 5, wherein the anemometer (400) is of an anemometer structure, the surface of the adjusting frame (410) is provided with a sliding groove and sleeved with a sliding pin, and the top end of the sliding pin is fixed on the surface of the deflection seat post (311).
7. The mechanical draft cooling tower anti-wind displacement strength test device according to claim 1, wherein the cross base frame (331) is horizontally fixed to the bottom end of the measuring vertical rod (320), and the end of the cross base frame (331) is hinged to the surface of each tilt clamping rod (332).
8. The mechanical draft cooling tower wind displacement resistance strength test device according to claim 1, wherein the clamping holding assembly (330) is a light nano boron fiber or carbon fiber component, and the cross base frame (331), the tilting clamping rod (332), the first connecting rod (333) and the second connecting rod (334) have a diameter of 2-4 mm.
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| CN202210619834.5A CN114705392B (en) | 2022-06-02 | 2022-06-02 | Test equipment for wind displacement resistance strength of mechanical ventilation cooling tower |
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| CN109959335A (en) * | 2017-12-22 | 2019-07-02 | 北京金风科创风电设备有限公司 | Method, device and system for measuring displacement of tower top |
| CN108534980A (en) * | 2018-06-27 | 2018-09-14 | 郑州大学 | A kind of Cooling Towers tower Pressures disturbing effect testing equipment and its application method |
| CN211013449U (en) * | 2019-12-26 | 2020-07-14 | 常州佳尔科仿真器材有限公司 | Target simple testing device for wind resistance |
| CN113670562A (en) * | 2021-08-11 | 2021-11-19 | 中国南方电网有限责任公司超高压输电公司广州局 | Support tower device and method for simulating collapse of wind tunnel test power transmission tower |
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