A cooling tower rigid body pressure test model

Abstract

This invention discloses a rigid pressure testing model for a cooling tower, comprising: an inner wall of the tower, with multiple pressure testing holes on its sidewalls; an outer wall of the tower, fitted over the inner wall, forming a receiving space between them; a connecting plate connected to the bottom of the inner wall, with multiple pre-drilled holes; a bottom support assembly connected to the connecting plate, comprising multiple first bottom supports and multiple second bottom supports, the first bottom supports being hollow, each corresponding to a pre-drilled hole; and a fixed base connected to the bottom support assembly, with multiple wiring holes corresponding to the first bottom supports. This invention provides space for pressure testing pipelines between the inner and outer walls of the tower and hollows specific locations on the bottom support assembly and fixed base, allowing the pressure testing pipelines to exit entirely from inside the model, thus avoiding interference with tower wind pressure measurement during the pressure test.

Description

Technical Field

[0001] This invention relates to the field of cooling tower wind load measurement technology, and in particular to a rigid body pressure test model for a cooling tower. Background Technology

[0002] Cooling towers, as typical large-scale hyperbolic rotating thin-shell structures, are widely used in important national production sectors such as power, petrochemicals, steel, and metal smelting. Currently, with the increasing demand for cooling in industry, cooling tower construction is developing towards ultra-high towers and large-scale tower groups. As typical wind-sensitive structures, the wind load effect and the resulting structural safety issues of large industrial cooling towers are very prominent. Cooling tower structural design requires wind tunnel tests using scaled-down models of the cooling tower to measure structural wind loads and study the interference effects of multiple towers, obtaining important structural design parameters—the inter-tower interference coefficient and the wind pressure distribution on the inner and outer surfaces of the cooling tower.

[0003] Currently, rigid body model pressure testing is a commonly used and important method for measuring wind loads on the internal and external surfaces of cooling towers. Traditional rigid body pressure testing models for cooling towers obtain wind pressure data by arranging pressure measuring holes on the internal and external surfaces of the tower and connecting these holes to electronic pressure scanning valves using small-diameter stainless steel pipes and plastic pressure measuring hoses. However, this traditional approach involves placing a large number of intertwined pressure measuring pipelines near the bottom support inside the tower, inevitably reducing the internal air permeability and severely affecting the accuracy of internal pressure measurements. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a rigid body pressure testing model for cooling towers.

[0005] To achieve the above objectives, an embodiment of the present invention provides the following technical solution:

[0006] A rigid pressure testing model for a cooling tower includes:

[0007] The inner wall of the tower has multiple pressure measuring holes on its side wall;

[0008] The outer wall of the tower is fitted over the inner wall of the tower, and an accommodating space is formed between the outer wall of the tower and the inner wall of the tower;

[0009] A connecting plate is attached to the bottom of the inner wall of the tower, and the connecting plate is provided with multiple reserved holes;

[0010] A bottom support assembly is connected to the connecting plate. The bottom support assembly includes a plurality of first bottom pillars and a plurality of second bottom pillars. The first bottom pillars are hollow, and the plurality of first bottom pillars correspond to the plurality of reserved holes respectively.

[0011] A fixed chassis is connected to the bottom support assembly. The fixed chassis is provided with a plurality of wiring holes, each of which corresponds to a plurality of the first bottom support columns.

[0012] As a further improvement of the present invention, a plurality of support bars are provided circumferentially at intervals on the outer side wall of the inner wall of the tower, and the support bars are connected to the outer wall of the tower.

[0013] As a further improvement of the present invention, at least one first bolt hole is provided on the outer wall of the tower, and at least one second bolt hole is provided on the support bar, wherein the first bolt hole and the second bolt hole correspond to each other.

[0014] As a further improvement of the present invention, the outer wall of the tower is supported on the connecting plate.

[0015] As a further improvement of the present invention, the outer wall of the tower includes two half-tower outer wall bodies, which are spliced ​​together to form the outer wall of the tower.

[0016] As a further improvement of the present invention, the first bottom support and the second bottom support are alternately distributed along the circumference of the connecting plate.

[0017] As a further improvement of the present invention, the fixed chassis is provided with a plurality of mounting holes along the circumferential direction.

[0018] As a further improvement of the present invention, the outer wall of the tower is made by 3D printing, and the inner wall of the tower, the connecting plate, the bottom support assembly and the fixed chassis are integrally formed by 3D printing.

[0019] The beneficial effects of this invention are:

[0020] (1) This invention is based on 3D printing technology, which decomposes the test model into five parts: the outer wall of the tower, the inner wall of the tower, the bottom support assembly, the connecting plate, and the fixed base. The inner wall of the tower, the bottom support assembly, the connecting plate, and the fixed base are integrally formed by 3D printing. By reserving bolt holes, the outer wall of the tower and the inner wall of the tower can be quickly assembled. In addition, the use of 3D printing technology further improves the processing accuracy of the rigid body pressure test model of the cooling tower, and holes can be pre-drilled at specific positions during model processing, avoiding additional processing of the model later.

[0021] (2) Reserve space for the pressure measuring pipeline in advance between the inner wall and the outer wall of the tower. Hollow out the connecting plate, the first bottom support and the fixed base to reserve space for the pressure measuring pipeline. Finally, the pressure measuring pipeline can pass through the inside of the model completely, avoiding the accumulation of the pressure measuring pipeline near the bottom of the tower. This eliminates the influence of the pressure measuring pipeline on the tower wind pressure measurement in the cooling tower pressure test and improves the accuracy of the test.

[0022] (3) This invention can be widely applied to wind tunnel tests of rigid models of various large or super-large cooling towers, and has strong applicability. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the outer wall of the semi-tower in a preferred embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the tower inner wall, connecting plate, bottom support assembly and fixed chassis integrally formed according to a preferred embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the connecting plate connected to the fixed chassis via a bottom support assembly, according to a preferred embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the structure of the fixed base connected to the bottom support assembly in a preferred embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of a preferred embodiment of the present invention, showing a wiring hole provided on a fixed chassis.

[0030] Figure 7 This is a top view of the fixed chassis according to a preferred embodiment of the present invention;

[0031] In the diagram: 1. Inner wall of the tower; 101. Pressure testing hole; 102. Support bar; 1021. Second bolt hole; 2. Outer wall of the tower; 201. First bolt hole; 202. Outer wall of the half-tower; 4. Connecting plate; 401. Reserved hole; 5. Bottom support assembly; 501. First bottom support column; 502. Second bottom support column; 6. Fixed base; 601. Cable routing hole; 602. Mounting hole. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0033] Please see Figures 1-7 This application discloses a rigid pressure testing model for a cooling tower, including an inner wall 1 of the tower cylinder, with multiple pressure testing holes 101 provided on the sidewalls of the inner wall 1; an outer wall 2 of the tower cylinder, fitted over the inner wall 2, forming a receiving space (not shown in the figure) between the outer wall 2 and the inner wall 1; a connecting plate 4, connected to the bottom of the inner wall 1, with multiple reserved holes 401 provided on the connecting plate 4; and a bottom support assembly 5, connected to the connecting plate 4, the bottom support assembly 5 including multiple first bottom support columns 501 and multiple second bottom support columns 501. The column 502 is connected to the connecting plate 4. The first bottom support column 501 is hollow and the first bottom support column 501 corresponds to the multiple reserved holes 401. The fixed base 6 is connected to the bottom support assembly 5. The first bottom support column 501 and the multiple second bottom support column 502 are connected to the fixed base 6. The fixed base 6 is provided with multiple wiring holes 601, and the multiple wiring holes 601 correspond to the multiple first bottom support columns 501.

[0034] Please see Figure 3 Multiple support bars 102 are spaced circumferentially on the outer wall of the inner wall 1 of the tower, and the support bars 102 are connected to the outer wall 2 of the tower. This arrangement facilitates the pre-drilling of bolt holes on the support bars 102 to fix the outer wall 2 of the tower to the inner wall 1 of the tower, ensuring that the inner wall 1 and the outer wall 2 of the tower will not move, and also facilitates the provision of space between the inner wall 1 and the outer wall 2 for the installation of pressure measuring pipelines.

[0035] Specifically, please refer to Figure 2 , Figure 3 At least one first bolt hole 201 is provided on the outer wall 2 of the tower, and at least one second bolt hole 1021 is provided on the support bar 102. The first bolt hole 201 and the second bolt hole 1021 correspond to each other. The outer wall 2 of the tower and the inner wall 1 of the tower are rigidly connected by screwing bolts into the first bolt hole 201 and the second bolt hole 1021.

[0036] Please see Figure 2The outer wall of the tower 2 includes two half-tower outer wall bodies 202, which are spliced ​​together to form the outer wall of the tower 2. This facilitates the connection between the outer wall of the tower 2 and the inner wall of the tower 1, enabling the assembly of the test model. It also facilitates the removal of the outer wall of the tower 2 from the inner wall of the tower 1, and allows for the convenient arrangement and installation of small-diameter stainless steel pipes and pressure measuring pipelines.

[0037] Please see Figure 1 Preferably, the outer wall 2 of the tower is supported on the connecting plate 4, which facilitates the connection between the outer wall 2 and the inner wall 1 of the tower, thereby facilitating the assembly of the test model. At the same time, it can prevent misalignment between the outer wall 2 and the inner wall 1 of the tower, ensuring the accuracy of the test model and thus improving the accuracy of the measurement.

[0038] Please see Figure 5 The first bottom support column 501 and the second bottom support column 502 are alternately distributed along the circumference of the connecting plate 4. Since the first bottom support column 501 is hollow and the second bottom support column 502 is solid, the alternating distribution of the first bottom support column 501 and the second bottom support column 502 reduces the damage to the overall structural stiffness caused by the hollowness of the first bottom support column 501, improves the stability of the bottom support component 5, and thus ensures that the test model has sufficient stiffness during the test.

[0039] To facilitate wind tunnel testing of the test model, it is preferable that the fixed base 6 has multiple mounting holes 602 arranged circumferentially. Connecting bolts are passed through the mounting holes 602 and tightened onto the wind tunnel wall to achieve a rigid connection between the cooling tower rigid pressure test model and the wind tunnel wall. Specifically, there are four mounting holes 602, which are evenly spaced circumferentially on the fixed base 6.

[0040] In this embodiment, the outer wall 2 of the tower is made by 3D printing. The inner wall 1 of the tower, the connecting plate 4, the bottom support component 5 and the fixed base 6 are integrally formed by 3D printing. The processing is precise and fast, which makes the experimental model structure accurate. Each component structure can be formed in one go, avoiding subsequent processing.

[0041] In use, before assembling the outer wall 2 of the tower, the pressure measuring hole 101 is connected to a small-diameter stainless steel pipe, which is then connected to the pressure measuring line. The pressure measuring line passes through the reserved hole 401 of the connecting plate 4, the first bottom support 501, and the wiring hole 601 of the fixed base 6 in sequence. Then, the two half-tower outer wall bodies 202 are spliced ​​together, and the first bolt hole 201 and the second bolt hole 1021 are aligned and locked. This allows the pressure measuring line to pass completely through the fixed base 6 through the inside of the test model and connect to the external electronic pressure scanning valve. This avoids the pressure measuring line accumulating near the bottom of the tower, thereby eliminating the influence of the pressure measuring line on the tower wind pressure measurement during the cooling tower pressure test and ensuring accurate measurement of the wind pressure data on the inner surface of the tower.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rigid pressure testing model for a cooling tower, characterized in that, include: The inner wall of the tower has multiple pressure measuring holes on its side wall and multiple support bars spaced circumferentially on its outer side wall. The outer wall of the tower is fitted outside the inner wall of the tower. The support strip is connected to the outer wall of the tower. An accommodating space is formed between the outer wall of the tower and the inner wall of the tower. The outer wall of the tower includes two half-tower outer wall bodies, which are spliced ​​together to form the outer wall of the tower. A connecting plate is attached to the bottom of the inner wall of the tower, and the connecting plate is provided with multiple reserved holes; A bottom support assembly is connected to the connecting plate. The bottom support assembly includes a plurality of first bottom pillars and a plurality of second bottom pillars. The first bottom pillars and the second bottom pillars are alternately distributed along the circumference of the connecting plate. The first bottom pillars are hollow, and the plurality of first bottom pillars correspond to a plurality of reserved holes respectively. A fixed chassis is connected to the bottom support assembly. The fixed chassis is provided with a plurality of wiring holes, and the plurality of wiring holes correspond to a plurality of first bottom support columns respectively. Space is reserved in advance between the inner wall and the outer wall of the tower for the installation of pressure measuring pipelines. The connecting plate, the first bottom support and the fixed base are hollowed out to reserve space for the pressure measuring pipelines. In the end, the pressure measuring pipelines can be completely passed through the inside of the model, avoiding the accumulation of pressure measuring pipelines near the bottom of the tower, thereby eliminating the influence of the pressure measuring pipelines on the tower wind pressure measurement in the cooling tower pressure test.

2. The rigid body pressure testing model for a cooling tower according to claim 1, characterized in that, At least one first bolt hole is provided on the outer wall of the tower, and at least one second bolt hole is provided on the support bar, with the first bolt hole corresponding to the second bolt hole.

3. The rigid body pressure testing model for a cooling tower according to claim 1, characterized in that, The outer wall of the tower is supported on the connecting plate.

4. The rigid body pressure testing model for a cooling tower according to claim 1, characterized in that, The fixed chassis has multiple mounting holes along its circumferential direction.

5. The rigid body pressure testing model for a cooling tower according to claim 1, characterized in that, The outer wall of the tower is made by 3D printing, and the inner wall of the tower, the connecting plate, the bottom support assembly and the fixed chassis are integrally formed by 3D printing.

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