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CN-121994442-A - Resistance characteristic test device of large-scale indirect air cooling tower of nuclear power

CN121994442ACN 121994442 ACN121994442 ACN 121994442ACN-121994442-A

Abstract

The application provides a resistance characteristic test device of a nuclear power large-scale indirect air cooling tower. The resistance characteristic test device of the nuclear power large indirect air cooling tower comprises a test room, a support frame, a test tower, a lifting device and an exhaust pipe, wherein an installation space is arranged in the test room, the support frame is fixedly arranged in the installation space, the test tower is arranged on the support frame and provided with a first air inlet facing the ground along the height direction of the test tower and a first air outlet far away from the ground, the lifting device is arranged on the support frame and is in transmission connection with the test tower so as to drive the test tower to move along the height direction of the test tower, the exhaust pipe is at least arranged in the installation space and comprises a second air inlet and a second air outlet, the second air inlet is connected with the first air outlet, and the second air outlet is provided with a fan, wherein the exhaust pipe is provided with at least one bending section. The resistance characteristic test device for the nuclear power large-scale indirect air cooling tower provided by the application realizes flexible adjustment of the height of the test tower, and ensures the authenticity of the air inlet boundary condition and the accuracy of air flow measurement.

Inventors

  • WANG CHENGLI
  • TIAN TAO
  • LI HUANRONG
  • WEI CHENGJUN
  • BEN YUE
  • BAI LI
  • WANG WEI
  • CHENG YINGSHE

Assignees

  • 国核电力规划设计研究院有限公司
  • 国电投莱阳核能有限公司

Dates

Publication Date
20260508
Application Date
20260305

Claims (10)

  1. 1. A resistance characteristic test device (100) of a nuclear power large-scale indirect air cooling tower is characterized by comprising, A laboratory (110) in which an installation space (111) is provided; A support (120) fixedly installed in the installation space (111); the test tower (130) is arranged on the support frame (120), and the test tower (130) is provided with a first air inlet (131) facing the ground along the height direction of the test tower and a first air outlet (132) far away from the ground; the lifting device (140) is arranged on the supporting frame (120), and the lifting device (140) is in transmission connection with the test tower (130) so as to drive the test tower (130) to move along the height direction of the test tower; exhaust pipe (150) set up in at least installation space (111), exhaust pipe (150) include second air intake and second air exit (151), the second air intake with first air exit (132) link to each other, second air exit (151) are provided with fan (160), wherein, exhaust pipe (150) have at least one bending section (152).
  2. 2. The resistance characteristic test device (100) of a large-scale indirect air cooling tower for nuclear power according to claim 1, wherein the second air inlet is located above the first air outlet (132) and opposite to the first air outlet (132) along the height direction of the test tower (130), a telescopic device (170) is arranged between the second air inlet and the first air outlet (132), and the telescopic device (170) is configured to be telescopic synchronously when the test tower (130) moves along the height direction thereof.
  3. 3. The resistance characteristic test device (100) of a nuclear power large indirect air cooling tower according to claim 2, wherein the telescopic device (170) comprises at least one of a telescopic tube (171) or a flexible tube sleeve (172).
  4. 4. The resistance characteristic test device (100) of a nuclear power large-scale indirect air cooling tower according to claim 2, wherein the telescopic device (170) comprises a telescopic tube (171) and a flexible tube sleeve (172), and the flexible tube sleeve (172) is sleeved outside the telescopic tube (171).
  5. 5. The resistance characteristic test device (100) of a nuclear power large-scale indirect air cooling tower according to claim 2, wherein the support frame (120) comprises a first face facing the first air outlet (132) along the height direction of the test tower (130), a connecting flange (133) is arranged in a circumferentially protruding manner on the test tower (130), and the connecting flange (133) is provided with a second face opposite to the first face along the height direction of the test tower (130); The lifting device (140) comprises a plurality of lifters (141) and a driving motor (142), the lifters (141) are arranged on the first surface and located on the periphery of the test tower (130), the lifting ends of the lifters (141) are connected with the second surface, two adjacent lifters (141) are in transmission connection through a transmission rod, and the driving motor (142) is in transmission connection with one transmission rod.
  6. 6. The resistance characteristic test device (100) of a large-scale indirect air cooling tower for nuclear power according to claim 5, wherein the lifting end is provided with a connecting piece (180), the connecting piece (180) comprises a first section and a second section, the first section extends along the height direction of the test tower (130), the first section is fixedly connected with the lifting end, the second section is perpendicular to the first section, the second section is fixedly connected with the first section, and the second section is fixedly connected with the second surface.
  7. 7. The resistance characteristic test device (100) of a nuclear power large indirect air cooling tower according to claim 5, wherein the first surface is further provided with a stroke detection device, the stroke detection device is used for detecting the position of the connecting flange (133), and the stroke detection device is in communication connection with the driving motor (142).
  8. 8. The resistance characteristic test device (100) of a nuclear power large-scale indirect air cooling tower according to claim 1, wherein the second air outlet (151) extends to the outside of the laboratory (110).
  9. 9. The resistance characteristic test device (100) of a large nuclear power indirect air cooling tower according to claim 8, wherein the fan (160) is located on the ground, a connecting piece (180) is arranged between an air inlet of the fan (160) and the second air outlet (151), the connecting piece (180) comprises a connecting hose (181) and a hose cover (182), the air inlet of the fan (160) is connected with the second air outlet (151) through the connecting hose (181), and the hose cover (182) is sleeved outside the connecting hose (181).
  10. 10. The resistance characteristic test device (100) of a nuclear power large-scale indirect air cooling tower according to claim 1, further comprising a parameter detection module, which is arranged in the test tower (130), and is used for detecting internal parameters of the test tower (130) in the test process.

Description

Resistance characteristic test device of large-scale indirect air cooling tower of nuclear power Technical Field The application relates to the technical field of resistance testing of indirect air cooling towers, in particular to a resistance characteristic testing device of a large-scale indirect air cooling tower for nuclear power. Background The nuclear power large indirect air cooling tower is core equipment in a nuclear power station cooling system and is mainly used for indirectly cooling heat generated by a reactor through air and then discharging the heat into the environment. The working principle is that the heat of a heating medium (such as water) is transferred to the air through natural or forced convection of the air flow in the tower body, so that the efficient heat dissipation is realized. In the design of a nuclear power plant, the resistance characteristics of an air cooling tower are directly related to cooling efficiency, energy consumption and system stability. However, due to the large scale of air cooling towers (typically up to hundreds of meters in height), the resistance characteristics in their actual operation are affected by a number of factors, such as air intake height, tower body structure shape, airflow distribution uniformity, and the like. Therefore, in the engineering design stage, the resistance characteristics under different working conditions are simulated through a model test so as to optimize the design of the tower body and verify the performance of the tower body. However, the nuclear power station in the prior art has limited construction sites and limited laboratory space, the traditional test device needs to adjust the position of the foundation of the tower body to change the height of the model, and the operation is complex and the consistency of the test environment is easy to damage. Disclosure of Invention The application provides a resistance characteristic test device of a large-scale indirect nuclear power air cooling tower, which realizes flexible adjustment of the height of the test tower on the premise of not changing the overall layout of a laboratory, and ensures the authenticity of an air inlet boundary condition and the accuracy of air flow measurement. The application provides a resistance characteristic test device of a large-scale indirect nuclear power air cooling tower, which comprises a test room, a support frame, a test tower, a lifting device and an exhaust pipe, wherein an installation space is arranged in the test room, the support frame is fixedly installed in the installation space, the test tower is provided with a first air inlet facing the ground along the height direction of the test tower and a first air outlet far away from the ground, the lifting device is arranged on the support frame and is in transmission connection with the test tower so as to drive the test tower to move along the height direction of the test tower, the exhaust pipe is at least arranged in the installation space and comprises a second air inlet and a second air outlet, the second air inlet is connected with the first air outlet, and the second air outlet is provided with a fan, wherein the exhaust pipe is provided with at least one bending section. According to the test device disclosed by the application, during test, the test tower moves up and down along the height direction of the test tower through the lifting device, so that the actual height of the first air inlet at the bottom of the test tower from the ground is changed, and the air inlet condition of the air cooling tower under different design working conditions is simulated. Air naturally flows into the test tower from the ground through the first air inlet, is discharged from the first air outlet at the top after heat exchange is completed, and enters the air exhaust pipe. The exhaust pipe guides the air flow to the fan far away from the test tower through the bending structure and is exhausted. The whole airflow path is closed, the boundary is clear, and the air inlet mode strictly follows the prototype characteristic of 'ground air inlet'. Because the support frame is fixed, only the test tower goes up and down, therefore test basic environment (such as ground flatness, surrounding obstacle position, etc.) keeps invariable, ensures that the test data of many operating modes has comparability. Meanwhile, the fan is far away from the test area and is used for isolating disturbance through the bent exhaust pipe, so that the measurement accuracy of key parameters such as pressure, wind speed and the like is remarkably improved. Therefore, the first air inlet of the test tower always faces the ground, the actual air inlet boundary of the large-scale indirect nuclear power air cooling tower is accurately reproduced, and the problem of flow distortion caused by the lifting Gao Daji of the conventional device is solved. Only remove the test tower body through elevating gear, need not whole supporti