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Variable area tube heat exchanger

A tubular heat exchanger, area technology, applied in the direction of heat exchanger types, indirect heat exchangers, heat exchange equipment, etc., can solve the problems of model parameter changes, system performance degradation, model structure changes, etc., and achieve high real-time performance. , The effect of improving control accuracy and reducing usage

Active Publication Date: 2016-01-06
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The PID feedback control system has a certain ability to suppress the changes in the internal characteristics of the heat exchanger system and the influence of external disturbances, but because the controller parameters are fixed, it is often difficult to use a simple first-order or second-order system to control the actual industrial process. description, and due to the interference of noise, load disturbance and other factors, it may also cause the change of the object model parameters or even the change of the model structure, so when the internal characteristics of the heat exchanger change or the external disturbance changes greatly, the performance of the system often changes. sharp decline, even instability

Method used

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  • Variable area tube heat exchanger
  • Variable area tube heat exchanger
  • Variable area tube heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, the tube heat exchanger with variable area includes: a shell 1 and tube boxes 2 arranged at both ends of the shell 1, wherein the tube box 2 at one end of the shell 1 is provided with a tube-side fluid inlet, and the other end of the tube The tank 2 is provided with a tube-side fluid outlet, and the shell 1 is provided with a shell-side fluid inlet and a shell-side fluid outlet. The shell 1 is provided with a plurality of heat exchange tubes 3 for connecting two tube boxes 2 and a The sealing plate 4 at both ends of the fixed heat exchange tube 3, the heat exchange tube 3 is evenly distributed on the sealing plate 4, and is distributed in a ring, the tube box 2 with the tube-side fluid inlet is provided with a spindle 5, and the sealing plate 4 There is a groove 8, and a sleeve 9 is arranged in the groove 8, and one end of the main shaft 5 is inserted into the sleeve 9 through the housing 1, and the seal between the main shaft 5 and the housin...

Embodiment 2

[0023] Figure 2 to Figure 4 As shown, in order to better adjust the shell-side outlet temperature range, a strip support plate 10 is installed in the tube box 2, and a right-angle baffle 6 and an arc-shaped sheet blocking device 11 are installed between the strip support plate 10 and the sealing plate 4 The arc-shaped sheet blocking device 11 includes an arc-shaped sheet 12, a connecting plate 13, a first ring gear 14, a first gear 15, and a first pressure bearing 16, and the first A ring gear 14 and a first pressure bearing 16. The first pressure bearing 16 is mainly used to ensure that the axial force is applied to position the first ring gear without affecting the rotation of the first ring gear 14. The first ring gear 14 can Select an appropriate number according to the arrangement of the heat exchange tubes 3. The first gear 15 is installed on the main shaft 5 and meshes with the first ring gear 14. A connecting ring is fixed on the outer edge of each first ring gear 14....

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Abstract

The invention relates to a heat exchanger, in particular to a variable-area tubular heat exchanger. The technical problem to be solved is to provide a heat exchanger with a reasonable structure, which can change the outlet temperature by adjusting the flow area of ​​the fluid, and has high control precision. , A variable area tubular heat exchanger with fast response speed, the technical solution adopted is the shell and the tube box arranged at both ends of the shell, wherein the tube box at one end of the shell is provided with a tube-side fluid inlet, and the other end The tube box is provided with a tube-side fluid outlet, and the shell is provided with a shell-side fluid inlet and a shell-side fluid outlet. The inside of the shell is provided with a plurality of heat exchange tubes for connecting the two tube boxes and two tubes for fixing the heat exchange tubes. The sealing plate at the end, the pipe box with the tube side fluid inlet is provided with a main shaft, the main shaft is provided with a right-angle baffle for blocking the heat exchange tube inlet, the right-angle baffle is located in the pipe box, and the main shaft is also connected with Rotary drive means located outside the housing; the invention is widely used in heat exchangers.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to a variable-area tubular heat exchanger. Background technique [0002] Heat exchanger is a kind of process equipment used for heat exchange, which is widely used in industrial production. As a traditional standard heat exchange equipment, shell and tube heat exchangers are widely used in chemical industry, oil refining, petrochemical, power, nuclear energy and other industrial installations, especially in high temperature and high pressure and large heat exchangers. Absolute advantage. However, due to the limitation of the current manufacturing process and the singleness of the control method, the heat exchanger generally has the phenomenon of poor control effect and low heat exchange efficiency, resulting in waste of energy. [0003] For traditional heat exchangers, on the control device, in order to control the fluid outlet temperature of the heat exchanger, flow regulation is usually used,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D7/00F28F27/00
Inventor 高强邱俊彭吴远远严鹏飞张建祥李艳闫宏伟陆辉山
Owner ZHONGBEI UNIV