A low-vibration shell-and-tube heat exchanger
A shell-and-tube heat exchanger, low-vibration technology, applied in the direction of heat exchanger types, heat exchanger shells, indirect heat exchangers, etc., can solve the vibration of heat exchanger tube bundles, reduce heat exchange effect, and reduce heat exchanger Service life and other issues, to achieve the effect of improving heat exchange capacity, high sealing performance and strength performance, and improving heat transfer coefficient
Active Publication Date: 2016-03-02
NANJING DUBLE METAL EQUIP ENG
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Problems solved by technology
The forced condenser is one of the key heat exchangers. Seawater is input into the tube side, and steam is input into the shell side. Since the steam flow rate is relatively large, reaching 13m / S, the shell side has multiple vapor phase inlets at the same time, which causes the tube bundle of the heat exchanger Vibration greatly reduces the heat exchange effect and reduces the service life of the heat exchanger
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[0015] The present invention will be further explained below in conjunction with the accompanying drawings.
[0016] A low-vibration shell-and-tube heat exchanger includes heat exchange tubes and a tube sheet 1. The tube sheet 1 is provided with tube holes 2 for arranging the heat exchange tubes. The diameter of the tube holes 2 is preferably 19 mm. The diameter of the heat exchange tube is smaller than that of the tube hole 2 and is preferably welded with the tube hole 2 . The tube holes 2 are arranged with two parallel lines at different distances away from the horizontal or vertical centerline of symmetry of the tube sheet 1 as the centerline of the tube holes 2, preferably half to two tube hole 2 diameters apart. The tube holes 2 are preferably evenly distributed in the two parts formed by the centerlines of the two tube holes 2 , and the distribution form is an equilateral triangle, and the angle between the center lines of three adjacent tube holes 2 is 60°. A number of...
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The invention discloses a low-vibration tube-shell heat exchanger. The heat exchanger comprises heat exchange tubes and a tube plate. Tube holes for holding the heat exchange tubes are arranged on the tube plate and arranged with two parallel lines deviating from a horizontal or perpendicular symmetrical central line of the tube plate for different distances serving as a tube hole central line. A plurality of anti-vibration spherical protrusions are further arranged on the tube plate. Diameters of the heat exchange tubes are smaller than those of the tube holes, and the heat exchange tubes are welded with the tube holes. According to the low-vibration tube-shell heat exchanger, the tube holes are adjusted locally on the basis of conventional symmetrical distribution, and the whole tube plate forms a subtle asymmetric structure, accordingly, the tube bundle vibration state of the heat exchanger is changed, and the heat exchange capacity is improved; the plurality of the anti-vibration spherical protrusions are further arranged on the tube plate, so that interference in fluid vibration is provided, the tube plate vibration is prevented, a flow disturbing effect on the fluid is provided, and the heat transfer coefficient is improved; and the heat exchange tubes are welded with the tube holes, so that high sealing performances and strength performances are provided.
Description
technical field [0001] The invention relates to the field of heat exchanger manufacturing, in particular to a low-vibration shell-and-tube heat exchanger. Background technique [0002] Seawater desalination is the use of seawater desalination to produce fresh water. It is an open-source incremental technology to realize the utilization of water resources. It can increase the total amount of fresh water without being affected by time, space and climate. The water quality is good and the price is becoming more and more reasonable. It can ensure stable water supply such as drinking water for coastal residents and supplementary water for industrial boilers. The forced condenser is one of the key heat exchangers. Seawater is input into the tube side, and steam is input into the shell side. Since the steam flow rate is relatively large, reaching 13m / S, the shell side has multiple vapor phase inlets at the same time, which causes the tube bundle of the heat exchanger Vibration gre...
Claims
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IPC IPC(8): F28D7/10F28F9/02F28F9/18
Inventor 邓家爱赵鲁王礼成
Owner NANJING DUBLE METAL EQUIP ENG