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A pche heat exchanger core structure design test prototype

A test prototype and structural design technology, applied in the testing of machine/structural components, instruments, and mechanical components, etc., and can solve problems that need to be further confirmed.

Active Publication Date: 2020-07-07
HEFEI GENERAL MACHINERY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, the rationality of the PCHE heat exchanger core structure stress calculation method, calculation model and design ideas needs to be further confirmed

Method used

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  • A pche heat exchanger core structure design test prototype
  • A pche heat exchanger core structure design test prototype
  • A pche heat exchanger core structure design test prototype

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as Figure 1-4 As shown, a PCHE heat exchanger core structure design test prototype, the test prototype includes an upper cover plate 1, a flow channel system and a lower cover plate 3 arranged in sequence from top to bottom;

[0031] The flow channel system includes one or more flow channel units that are laminated sequentially from top to bottom. The flow channel unit 2 includes end plate areas 21 on both sides and a middle flow channel area 22. The end plate area 21 There is a gap on the top, the two ends of the flow channel area 22 are respectively located in the gap and there is a gap 23 between the flow channel area 22 and the bottom of the gap; the upper plate surface of the end plate area 21 of the top channel unit 2 and the upper cover plate 1. The lower surface of the end plate area 21 of the bottom flow channel unit 2 is connected with the lower cover plate 3 respectively, and the end plate area 21, the flow channel area 22, the upper cover plate 1, and ...

Embodiment 2

[0036] On the basis of Example 1, the test prototype also includes a displacement measurement sensor 7 for displacement measurement, and the displacement measurement sensor 7 is fixed at the center of the outer surface of the upper cover 1 or the lower cover 3 for measuring the upper Displacement at the center of the outer surface of the cover or lower cover.

[0037] The two-end plate area 21 and the flow channel area 22 in the same flow channel unit 2 are formed by etching or machining on the same plate, and the adjacent flow channel units 2 and the flow channel system are respectively connected with the upper cover plate 1, The lower cover plates 3 are integrally welded together by diffusion welding at one time.

[0038] The medium inlet connecting pipe, test pressure measuring tube 1 and test pressure measuring tube 2 are all welded to the through hole of the end plate through full penetration.

[0039] The plate width S4 on both sides of the notch on the end plate is at ...

Embodiment 3

[0042] On the basis of embodiment 2, a kind of design method of PCHE heat exchanger core structure design test prototype, comprises the following steps,

[0043] Any one of the end plate regions 21 is composed of a groove-shaped sealing part 212 and two wing parts 211, the sealing part 212 is rectangular; the bottom edge of the two wing parts 211 and the The broad side of the same side of the sealing plate part 212 is connected as a whole, and the wing plate part 211 is symmetrically distributed along the centerline of the narrow side direction of the sealing plate part 212;

[0044] S1: the width of the narrow side of the sealing part 212;

[0045] S2: the welding length between the runner area 22 and any wing plate part 211;

[0046] S3: the width of the notch along the length direction of the flow channel;

[0047] S4: the width of the wing plate portion 211 along the direction perpendicular to the length of the flow channel;

[0048] S5: the length of the runner region ...

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Abstract

The invention belongs to the field of PCHE heat exchangers, and particularly relates to a PCHE heat exchanger core structure design test prototype. The test prototype comprises an upper cover plate, aflow channel system and a lower cover plate which are sequentially arranged from top to bottom, wherein the flow channel system comprises one or more flow channel units, the flow channel units comprise end plate areas on the two sides and flow channel areas in the middles, notches are formed in the end plate areas, the two ends of the flow channel areas are correspondingly located in the notches,moreover, gaps are reserved between the flow channel areas and the bottoms of the notches, the upper plate surfaces and the lower plate surfaces of the end plate areas are connected together with theupper cover plate and the lower cover plate respectively, and the gaps, the upper cover plate and the lower cover plate jointly form a cavity. The PCHE heat exchanger core structure design test prototype has the beneficial effects that the limit load of a PCHE heat exchanger core structure can be accurately measured through the test prototype which is simple in structure, economical and practical, and a reference is provided for the design of the PCHE heat exchanger core structure.

Description

technical field [0001] The invention belongs to the field of PCHE heat exchangers, in particular to a PCHE heat exchanger core structure design test prototype. Background technique [0002] PCHE heat exchanger is a new type of compact heat exchanger developed in recent years. This heat exchanger has the advantages of compact structure, high heat exchange efficiency, high temperature resistance, and high pressure resistance. It is used in the field of LNG floating storage and regasification, nuclear power, thermal power and other Brayton cycle power generation fields. There will be a wide range of applications in other fields. However, there is currently no corresponding structural design standard for this type of heat exchanger, especially for the core structure. At present, the stress of the core structure can only be calculated according to simplified model formulas or finite element methods and refer to traditional pressure vessels. The design idea of ​​the core body (i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 陈永东姚志燕吴晓红于改革刘孝根
Owner HEFEI GENERAL MACHINERY RES INST