Supercharge Your Innovation With Domain-Expert AI Agents!

A block hole type pressureless sintered silicon carbide heat exchange module and process

A technology of sintered silicon carbide and heat exchange modules, applied in indirect heat exchangers, heat exchanger types, heat exchange equipment, etc., can solve the problems of unstable O-ring sealing method, increased production cost, broken pipe leakage, etc. , to achieve the effect of reliable sealing, improving performance and avoiding breakage

Active Publication Date: 2022-02-18
威海华瓷新材料有限责任公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sealing method of the O-ring is unstable. Under the conditions of high pressure, high temperature and high corrosion, seal leakage often occurs
Furthermore, when the tube-and-tube design is installed, due to the straightness of the silicon carbide heat exchange tubes, installation stress, and the gap between the heat exchange tubes and the baffles, it is very easy to cause broken tubes and leaks under some working conditions. , the above problems bring great inconvenience to the operators in the actual working process, and the production cost increases

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A block hole type pressureless sintered silicon carbide heat exchange module and process
  • A block hole type pressureless sintered silicon carbide heat exchange module and process
  • A block hole type pressureless sintered silicon carbide heat exchange module and process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 1 As shown, it is a block-hole type pressureless sintered silicon carbide heat exchange module, which includes a sintering unit, and the sintering unit is a lower plate 1, a horizontal grid 2, a middle plate 3, and a vertical grid 4 from bottom to top. , Upper board 5. The horizontal grid bars 2 and the vertical grid bars 4 are all provided with several and arranged at a certain distance, and the borders of the horizontal grid bars 2 and the vertical grid bars 4 are all provided with side bars 6 . In this embodiment, the width of the side bars 6 is greater than the widths of the horizontal grid bars 2 and the vertical grid bars 4 .

[0019] Adhesives are arranged on the upper and lower surfaces of the above-mentioned horizontal lattice strips 2, vertical lattice strips 4, and side strips 6 to facilitate bonding and sintering. Such as figure 2 As shown, a plurality of sintered units are combined to form a block-hole pressureless sintered silicon carbid...

Embodiment 2

[0021] The preparation process for the block hole type pressureless sintered silicon carbide heat exchange module in Example 1 includes the following steps: (1) Manufacturing the pressureless sintered silicon carbide green body, the lower plate, the horizontal grid, the middle plate, the vertical grid The blanks of strips and upper plates are manufactured separately;

[0022] (2) Manually coat the bonding material on the upper and lower sides of the horizontal grid, side strips, and vertical grids, with a coating thickness of 0.3-0.6 mm, and apply the , the upper plate and the side strips are assembled;

[0023] (3) Place the assembled block-hole silicon carbide green body into a vacuum furnace for sintering, the sintering atmosphere is argon, the sintering temperature is 2000-2200°C, and the holding time is 0.5-3h;

[0024] (4) After the sintering is completed, continue to place it in a vacuum furnace for annealing treatment. The annealing atmosphere is nitrogen, the tempera...

Embodiment 3

[0027] It is a small-hole heat exchanger of 1 square meter, and the cross-sectional area of ​​the hole channel is 4*28.7=118mm 2

[0028]

[0029] The above is a statistical table of the sintered size and the sintered size data of an embodiment according to the process of embodiment 2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of engineering ceramic materials, and in particular relates to a block hole type pressureless sintered silicon carbide heat exchange module and a process. It includes at least one sintering unit, and the sintering unit includes a lower plate, a horizontal grid, a middle plate, a vertical grid and an upper plate from bottom to top, and the horizontal grid and the vertical grid are each provided with several parallel They are arranged at intervals of a certain distance, and side bars are set at the borders of the horizontal grid bars and the vertical grid bars. In the present invention, the lower plate, the horizontal grid, the middle plate, the vertical grid, and the upper plate are bonded together for sintering, which effectively solves the problem of the gap between the traditional heat exchange tube and the baffle plate, and avoids the resonance of the heat exchange tube. And fracture occurs; different from the O-ring seal used in the tube-and-tube heat exchanger, the block-hole heat exchanger adopts end-face sealing; which greatly increases the safety and stability of the silicon carbide heat exchanger. The invention has the advantages of high strength, impact resistance, reliable sealing, not easy to break, etc., and effectively improves the service performance of the silicon carbide heat exchange module.

Description

technical field [0001] The invention belongs to the technical field of engineering ceramic materials, and in particular relates to a block hole type pressureless sintered silicon carbide heat exchange module and a process. Background technique [0002] Silicon carbide is a single-phase, pressureless sintered silicon carbide ceramic with excellent properties such as high purity, fine grain and extremely low porosity. Excellent alternative. Silicon carbide is widely used in extreme environments of high temperature, high pressure, strong corrosion, and high wear in chemical, pharmaceutical, and metallurgical industries, especially silicon carbide heat exchangers. [0003] At present, the pressureless sintered silicon carbide heat exchanger generally adopts the shell and tube design. However, silicon carbide parts cannot be welded effectively, so O-rings and tube-sheet seals are generally used. However, the sealing method of the O-ring is unstable, and under high pressure, hi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F28D9/00C04B35/565F28F21/02
CPCC04B35/565C04B35/571F28F21/02C04B2235/428C04B2235/3821C04B2235/6586C04B2235/668C04B2235/612C04B2235/95
Inventor 李清华张仁升
Owner 威海华瓷新材料有限责任公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com