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CN-116625041-B - Test device, working method and test system for cooling by flowing water

CN116625041BCN 116625041 BCN116625041 BCN 116625041BCN-116625041-B

Abstract

The invention relates to the technical field of test equipment, in particular to a test device, a working method and a test system for cooling by flowing water; the test device for cooling by using flowing water comprises a water tank, a heating structure, a cooling structure and a flowing structure, wherein the water tank is internally provided with a lining barrel and a circular seam water layer, the lining barrel is provided with a flow structure, the heating structure is arranged in the lining barrel and is used for heating first liquid in the lining barrel, the cooling structure is connected with the lining barrel, the first liquid in the lining barrel enters the cooling structure, a cooling coil is arranged in the cooling structure, the cooling coil is externally connected with the first liquid, and the flowing structure is connected with the cooling structure and the water tank and is used for driving second liquid to enter the circular seam water layer. The test device for cooling by using flowing water can fully reflect the influence of various boundary conditions on the heat insulation effect through the test study of different water injection temperatures, water injection flow rates, pool water temperatures, water injection angles, water layer widths and heating power.

Inventors

  • FAN GUANGMING
  • HAO SHUAI
  • LI ZONGKUN
  • LI JIAMING
  • MA FUBING
  • YAN CHANGQI
  • Guan Shicong

Assignees

  • 哈尔滨工程大学

Dates

Publication Date
20260508
Application Date
20230517

Claims (9)

  1. 1. A test apparatus cooled by flowing water, comprising: the water tank (1), there are lining cylinder (2) and girth water layer (3) in the water tank (1), there are communicating structures (4) on the lining cylinder (2); a heating structure (5) which is arranged in the lining cylinder (2) and heats the first liquid (6) in the lining cylinder (2); The cooling structure (7) is connected with the water tank (1), the first liquid (6) in the water tank (1) enters the cooling structure (7), a cooling coil (71) is arranged in the cooling structure (7), the cooling coil (71) is externally connected with the first liquid (6), and the first liquid (6) is converted into the second liquid (8) after being cooled by the cooling coil (71); the flow structure (9) is connected with the cooling structure (7) and the water tank (1), and the flow structure (9) drives the second liquid (8) to enter the circular seam water layer (3); The temperature acquisition mechanism (10) is arranged on the water tank (1) and the flow structure (9); The communication structure (4) includes: The communicating holes (11) are arranged at intervals along the circumferential direction of the lining cylinder (2), and the communicating holes (11) are used for connecting the lining cylinder (2) and the circular seam water layer (3); and a baffle plate (12) arranged in the lining cylinder (2), wherein the baffle plate (12) is used for blocking the communication hole (11).
  2. 2. Test device cooled with flowing water according to claim 1, characterized in that the flow structure (9) comprises: the connecting pipeline (13), the connecting pipeline (13) is used for connecting the cooling structure (7) and the circular seam water layer (3), and a centrifugal pump (14), a first throttle valve (15) and a second throttle valve (16) are arranged on the connecting pipeline (13); The water injection connecting pipe (17) is connected with the connecting pipeline (13), and the water injection connecting pipe (17) is arranged corresponding to the circular seam water layer (3).
  3. 3. Test device for cooling with flowing water according to claim 2, characterized in that the end of the water injection connection pipe (17) is provided with a water injection pipe (18), the water injection connection pipe (17) being arranged in a cross shape.
  4. 4. A test device for cooling with flowing water according to claim 3, characterized in that the flow structure (9) further comprises a liquid flow meter (19), the liquid flow meter (19) being arranged to meter the flow of the second liquid (8) into the annular seam water layer (3).
  5. 5. Test device for cooling with flowing water according to claim 3 or 4, characterized in that the flow structure (9) further comprises a return pipe (20), the return pipe (20) being arranged for communication between the inlet and outlet ends of the centrifugal pump (14), the return pipe (20) being provided with a third throttle valve (21).
  6. 6. The test device according to claim 5, further comprising an overflow trough (22), wherein the overflow trough (22) is connected to the water tank (1) and the cooling coil (71).
  7. 7. Test device cooled by flowing water according to claim 6, characterized in that the cooling structure (7) is provided with an exhaust valve (23).
  8. 8. A method of operating a test rig cooled by running water as claimed in any one of claims 1 to 7, comprising: Injecting a first liquid (6) into the water tank (1), injecting the first liquid (6) into the cooling structure (7) at the same time of water injection, injecting the first liquid (6) into the cooling coil (71), cooling the cooling coil (71) by the first liquid (6) to convert the first liquid into a second liquid (8), and starting the heating structure (5) to heat the first liquid (6) in the water tank (1) after the water injection in the water tank (1) is finished, and observing the change condition of the water temperature in the water tank (1) through the temperature acquisition mechanism (10); When the water temperature in the water tank (1) reaches the designated temperature, the flow structure (9) is opened, the second liquid (8) is driven to be injected into the annular seam water layer (3) in the water tank (1), a certain time is required to be maintained after the water injection is started, the temperature and flow data of each place are read when the temperature of the test device is not changed, and the heat insulation effect is evaluated through the temperature difference of the inner wall surface and the outer wall surface of the annular seam water layer (3).
  9. 9. A test system for investigating cooling with flowing water, characterized by comprising a test device according to any one of claims 1-7.

Description

Test device, working method and test system for cooling by flowing water Technical Field The invention relates to the technical field of test equipment, in particular to a test device, a working method and a test system for cooling by flowing water. Background The outlet temperature of the current 200MW pool-type low-temperature heat supply pile is 98 ℃, and the heat supply capacity is insufficient in severe cold weather. In order to improve the heating capacity under severe cold conditions, it is currently planned to raise the operating parameters of the pool type low temperature heating stack. And after the operation parameters are improved, the temperature of the pool water of the reactor can be obviously increased. In addition, in the event of an operational accident of the reactor, the pool water temperature may also rise significantly. The bearing capacity of the concrete outside the hot-water supply reactor pool is affected by the high-temperature pool water potential, so that an effective scheme for insulating the concrete outside the reactor pool is necessary. While for pool type low temperature heating stack insulation schemes, no substantial research has been done at present. The related patents and literature only describe some methods of insulating heat in the construction field, such as thermal barrier coatings, thermal barrier materials, vacuum windows, water flow windows, etc. The water flow window is applied to the field of construction, and the principle is that heat in the window is taken away through the flow of water, and the water flows into the window after being cooled outside. Disclosure of Invention Accordingly, the present invention provides a test apparatus, a method of operation, and a test system for cooling with running water. In order to solve the technical problems, the invention provides a test device for cooling by flowing water, which comprises a water tank, a heating structure, a cooling structure and a temperature acquisition mechanism, wherein a lining cylinder and a circular seam water layer are arranged in the water tank, a communication structure is arranged on the lining cylinder, the heating structure is arranged in the lining cylinder and is used for heating first liquid in the lining cylinder, the cooling structure is connected with the water tank, the first liquid in the water tank enters the cooling structure, a cooling coil is arranged in the cooling structure, the cooling coil is externally connected with the first liquid, the first liquid is converted into second liquid through cooling of the cooling coil, the flow structure is connected with the cooling structure and the water tank, the second liquid is driven to enter the circular seam water layer by the flow structure, and the temperature acquisition mechanism is arranged on the water tank and the flow structure. Further, the communication structure comprises a plurality of communication holes and baffle plates, wherein the communication holes are arranged at intervals along the circumferential direction of the lining barrel, and the baffle plates are arranged in the lining barrel and used for blocking the communication holes. The flow structure further comprises a connecting pipeline, a water injection connecting pipe and a water injection connecting pipe, wherein the connecting pipeline is used for connecting the cooling structure and the circular seam water layer, the connecting pipeline is provided with a centrifugal pump, a first throttle valve and a second throttle valve, and the water injection connecting pipe is connected with the connecting pipeline and is arranged corresponding to the circular seam water layer. Further, the end part of the water injection connecting pipe is provided with a water injection pipe, and the water injection connecting pipe is in a cross-shaped arrangement. Further, the flow structure further comprises a liquid flowmeter for measuring the flow of the second liquid into the circumferential seam water layer. Further, the flow structure further comprises a return pipe, and a third throttle valve is arranged on the return pipe. Further, the water tank also comprises a overflow water tank, and the overflow water tank is connected with the water tank and the cooling coil. Further, an exhaust valve is arranged on the cooling structure. The invention further provides a working method of the test device using flowing water for cooling, which comprises the steps of injecting first liquid into the water tank, injecting the first liquid into the cooling structure at the same time, injecting the first liquid into the cooling coil, cooling the cooling coil, converting the first liquid into second liquid, starting the heating structure to heat the first liquid in the water tank after the water is injected into the water tank, observing the change condition of the water temperature in the water tank through the temperature acquisition mechanism, opening the flow structure when the wa