RU2364811C2 - Method of fabrication of apparatus for air cooling of gas, method of fabrication of apparatus heat exchanger section (versions), method of fabrication of apparatus chamber for gas inlet or outlet, method of hydraulic pressure testing of apparatus heat exchanger section and method of hydraulic pressure testing of apparatus manifold for gas supply and removal - Google Patents
Method of fabrication of apparatus for air cooling of gas, method of fabrication of apparatus heat exchanger section (versions), method of fabrication of apparatus chamber for gas inlet or outlet, method of hydraulic pressure testing of apparatus heat exchanger section and method of hydraulic pressure testing of apparatus manifold for gas supply and removal Download PDFInfo
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- RU2364811C2 RU2364811C2 RU2004109120/06A RU2004109120A RU2364811C2 RU 2364811 C2 RU2364811 C2 RU 2364811C2 RU 2004109120/06 A RU2004109120/06 A RU 2004109120/06A RU 2004109120 A RU2004109120 A RU 2004109120A RU 2364811 C2 RU2364811 C2 RU 2364811C2
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Abstract
FIELD: heating.
SUBSTANCE: invention is of relevance for operation of apparatus for air cooling of gas and is to be utilised in power engineering industry. The proposed method of the heat exchanger apparatus fabrication envisages the following activities: fabrication of finned heat exchange tubes, a framework, at least a single apparatus section with lateral walls and beams joining them together, gas inlet and outlet chambers; packing the section with a bundle of finned one-way-flow heat exchange tubes; fabrication of a manifold for gas supply and removal, a support structure and their assembly. The section walls are represented by channel bars with shelves turned towards the tubes and are equipped with fairing displacers forming the U-bar reinforcement ribs. One of the methods of the apparatus heat exchanger section fabrication envisages positioning an optimal number of tubes within the section in accordance with the dependence specified within the framework of the invention concept. An alternative method envisages assembly of the section elements on a holding frame designed within the framework of the invention concept. A third method envisages assembly of the elements in a specific sequence combined with performance of hydraulic pressure testing. The method of fabrication of the apparatus chamber for gas inlet or outlet envisages manufacture of the chamber elements and their assembly in a sequence developed within the framework of the invention concept. The method of fabrication of the gas delivery and removal manifold envisages manufacture of the manifold body sections and their assembly with the help of the tool tab designed within the framework of the invention concept. Method of hydraulic pressure testing of the apparatus sections envisages mounting the section to be tested on the hydraulic test bench designed within the framework of the invention concept with the pressure increase and drop modes as per the dependence given. Method of the manifold hydraulic pressure testing envisages it being mounted on the hydraulic test bench or a loft with the help of support structures designed within the framework of the invention concept.
EFFECT: enhanced effectiveness and precision of assembly of the apparatus and elements thereof combined with reduction of labour and material consumption, reduction of hydraulic losses occurring in the apparatus as well as technological simplification of the hydraulic pressure testing of heat exchanger sections and manifolds of the apparatus for air cooling of gas, improved effectiveness and reduced labour intensity of their performance.
25 cl, 30 dwg
Description
Claims (25)
где FT - относительная суммарная площадь теплообменной поверхности пучка оребренных труб, приходящаяся на 1 м2 площади поперечного сечения потока теплообменной среды, преимущественно воздуха, принимаемая в диапазоне 72,4<FT<275,8, безразмерная величина;
d1 - диаметр теплообменной трубы с оребрением, м;
d2 - диаметр той же теплообменной трубы без учета оребрения, м;
δ - толщина ребра оребрения или средняя толщина ребра, м;
β - шаг ребер трубы, м.4. A method of manufacturing a heat-exchange section of an air-cooled gas cooling apparatus, characterized in that it provides for the manufacture and assembly of a frame of a heat-exchange section, gas inlet or outlet chambers with upper, lower walls, side walls, forming respectively a tube and an outer board with holes, end walls and, at least one partition, the assembly of the walls of the section with wall displacer-fairings flow of the external cooling medium, mainly air, packing sections with a beam of heat exchange, fins, one-way pipes with their installation in sections in rows in height with separation of the rows by distance elements to ensure the transfer of load from the pipes through the distance elements to the frame of the heat exchange section and securing the ends of the pipes in the holes of the tube plates, the number n of pipes per 1 running meter of transverse width section of the bundle of heat transfer tubes section is taken from the condition
where F T is the relative total area of the heat exchange surface of the bundle of finned tubes per 1 m 2 of the cross-sectional area of the flow of the heat exchange medium, mainly air, taken in the range 72.4 <F T <275.8, dimensionless quantity;
d 1 - the diameter of the heat exchange pipe with fins, m;
d 2 - the diameter of the same heat exchange pipe without taking into account fins, m;
δ is the thickness of the ribs or the average thickness of the ribs, m;
β - step of the ribs of the pipe, m
,
где - максимальное давление при испытаниях, МПа;
Ррасч - расчетное давление, МПа;
ΔР - перепад давления в секунду, МПа/с;
t - время повышения или снижения давления при испытаниях, с.17. The method of hydraulic testing of the heat exchange section of the gas air cooling apparatus, characterized in that it provides for the placement of a manufactured heat exchange section with gas inlet and outlet chambers and a bundle of heat exchange pipes on the hydrostand, tight installation of plugs on the flanges of the gas inlet or outlet chambers, filling the pipe space and gas inlet or outlet chambers of the section with an incompressible liquid, mainly water, a smooth increase in pressure, shutter speed, stepwise pressure relief, visual and instrument complete control, draining the liquid, draining and documenting the test results and drawing up a conclusion on them, moreover, the section is placed on a hydraulic stand, which includes end and at least one intermediate support, the supporting surfaces of which are aligned on a plane, and each end support of the hydraulic stand is installed with an offset to the transverse axis of the hydrostand along the length of the section and the formation of a cantilever overhang of the end section of the test section, comprising from the outer edge of the gas inlet or outlet chamber to the axis of the end support chastok length equal to the width of 2,1-3,5 entrance chamber or a gas outlet, wherein the lifting speed and the lowering of the pressure receiving conditions
,
Where - maximum pressure during testing, MPa;
R calc - design pressure, MPa;
ΔР - pressure drop per second, MPa / s;
t is the time of pressure increase or decrease during testing, s.
,
где - максимальное давление при испытаниях, МПа;
Ррасч - расчетное давление, МПа;
ΔР - перепад давления в секунду, МПа/с;
t - время повышения или снижения давления при испытаниях, с.21. A method of hydraulic testing a gas supply and exhaust manifold for a gas air-cooling apparatus, characterized in that it provides for placement of a gas supply and exhaust manifold on a hydrostand, a tight installation of plugs on the flanges for connecting the gas supply and exhaust manifold to the gas inlet or outlet chambers of the apparatus and at the open end of the pipe for attaching a gas inlet and outlet manifold to the gas pipeline, filling the gas inlet and outlet manifold body with an incompressible liquid, water, smooth pressure increase, shutter speed, stepwise pressure relief, visual and instrumental control, draining the liquid, draining the gas supply and exhaust manifold and documenting the test results and drawing up a conclusion on them, the gas supply and exhaust manifold being placed on a hydraulic stand, which includes lodgement supports installed on a horizontal base, or on a plaza, or on a frame, with a bed made mainly in the shape of the body of the gas supply and exhaust manifold and coinciding with it on the support the perimeter of the cross section of the housing along the arc, the length of which is 0.22-0.78 of the lower half of its perimeter, plugs on the flanges for connecting the collector of gas inlet and outlet with the gas inlet or outlet chamber of the apparatus are mainly made with openings matching in size, location and in quantity with holes uniformly dispersed around the circumference in the respective flanges of the gas supply and exhaust manifold body, and a plug on the open end of the pipe for connecting the gas supply and exhaust manifold to the gas pipeline is attached with tension to the body of the gas supply and exhaust manifold by means of a suspension support, and at least an air outlet pipe is mounted on this plug, and the rate of pressure rise and decrease is taken from the condition
,
Where - maximum pressure during testing, MPa;
R calc - design pressure, MPa;
ΔР - pressure drop per second, MPa / s;
t is the time of pressure increase or decrease during testing, s.
Priority Applications (1)
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RU2004109120/06A RU2364811C2 (en) | 2004-03-26 | 2004-03-26 | Method of fabrication of apparatus for air cooling of gas, method of fabrication of apparatus heat exchanger section (versions), method of fabrication of apparatus chamber for gas inlet or outlet, method of hydraulic pressure testing of apparatus heat exchanger section and method of hydraulic pressure testing of apparatus manifold for gas supply and removal |
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RU2004109120/06A RU2364811C2 (en) | 2004-03-26 | 2004-03-26 | Method of fabrication of apparatus for air cooling of gas, method of fabrication of apparatus heat exchanger section (versions), method of fabrication of apparatus chamber for gas inlet or outlet, method of hydraulic pressure testing of apparatus heat exchanger section and method of hydraulic pressure testing of apparatus manifold for gas supply and removal |
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RU2004109120A RU2004109120A (en) | 2005-09-27 |
RU2364811C2 true RU2364811C2 (en) | 2009-08-20 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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RU2576076C2 (en) * | 2011-01-27 | 2016-02-27 | Фмс Конгсберг Сабси Ас | Distribution header |
RU2610972C1 (en) * | 2015-11-26 | 2017-02-17 | Общество с ограниченной ответственностью Научно-производственное объединение "Спецнефтехиммаш" | Camera of product distribution, which has air cooler with tubular internal cavity and square outdoor geometry |
RU203662U1 (en) * | 2020-12-18 | 2021-04-15 | Публичное акционерное общество "Татнефть" имени В.Д. Шашина | Device for assembling the switchgear of the GZU technological block Sputnik |
RU2810846C1 (en) * | 2023-10-02 | 2023-12-28 | Акционерное общество "Научно-исследовательский и проектно-конструкторский институт нефтяного машиностроения "ВНИИНЕФТЕМАШ" | Air cooler distribution manifold |
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CN117505711B (en) * | 2024-01-08 | 2024-03-15 | 扬州威特科技有限公司 | Radiator fin stamping forming machine |
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2004
- 2004-03-26 RU RU2004109120/06A patent/RU2364811C2/en not_active IP Right Cessation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2576076C2 (en) * | 2011-01-27 | 2016-02-27 | Фмс Конгсберг Сабси Ас | Distribution header |
RU2610972C1 (en) * | 2015-11-26 | 2017-02-17 | Общество с ограниченной ответственностью Научно-производственное объединение "Спецнефтехиммаш" | Camera of product distribution, which has air cooler with tubular internal cavity and square outdoor geometry |
RU203662U1 (en) * | 2020-12-18 | 2021-04-15 | Публичное акционерное общество "Татнефть" имени В.Д. Шашина | Device for assembling the switchgear of the GZU technological block Sputnik |
RU2810846C1 (en) * | 2023-10-02 | 2023-12-28 | Акционерное общество "Научно-исследовательский и проектно-конструкторский институт нефтяного машиностроения "ВНИИНЕФТЕМАШ" | Air cooler distribution manifold |
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