Heat exchanger
By adopting a phenolic resin-impregnated graphite heat exchange core and an improved graphite block connection structure, the problems of leakage and poor sealing in traditional heat exchangers have been solved, achieving safe, reliable, and efficient heat exchange.
Patent Information
- Application Number
- CN202423306642.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Traditional horizontal shell-and-tube heat exchangers are prone to condensate buildup, which can lead to water hammer. Furthermore, block-hole graphite heat exchangers have poor sealing properties during assembly, affecting operational safety and efficiency.
The graphite heat exchange core is impregnated with phenolic resin, and a stable connection of the graphite blocks is achieved by setting bosses and grooves between the graphite blocks, combined with multi-level sealing grooves, insertion grooves and buckles.
The leakage problem was solved, the operational reliability and efficiency of the heat exchanger were improved, and safety hazards and production costs were reduced.
Smart Images
Figure CN223741293U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to heat exchanger field, concretely relates to a heat exchanger. BACKGROUND
[0002] In industrial production, as the important equipment for realizing heat exchange, the performance and reliability of the heat exchanger are crucial, and the traditional horizontal tube heat exchanger exposes many problems in the operation process, due to the characteristics of horizontal structure, easy to cause condensate accumulation, and further cause water hammer phenomenon, which not only reduces the heat exchange efficiency, but also may cause serious damage to the equipment, and the frequent start-stop operation for leak treatment of the heat exchanger not only increases the maintenance cost, but also easily causes safety accidents, at the same time, the material of the original design heat exchanger is Q235, and the material is changed to 30403 later, and the leakage phenomenon of the tube and the tube plate still occurs, which directly increases the production cost, after the equipment is put into operation since 2014, after many parking pipe maintenance, and respectively in 2018 (replace equipment manufacturer), 2020 (equipment overall external maintenance, replace material), and the leakage problem is not solved;
[0003] At the same time, the traditional block hole type graphite heat exchanger is composed of a large number of block graphite components with holes. The block hole type has the advantages of high structural strength, which can ensure the safety of the heat exchange process. However, this form has certain defects, that is, a large number of block heat exchange blocks need to be spliced to form a heat exchange core. In the splicing operation of the block hole type graphite component, it is easy to produce poor sealing problem. This not only affects the normal operation of the heat exchanger, but also may cause the heat exchange efficiency to decrease, the energy loss to increase, and even may cause some safety hazards. CONTENT OF THE UTILITY MODEL
[0004] In order to solve the above problems, the utility model provides a kind of heat exchanger.
[0005] The utility model is realized by the following technical solutions:
[0006] A kind of heat exchanger, including heat exchanger shell, the both ends of the heat exchanger shell are connected with upper head and lower head respectively, the upper head and lower head are respectively flange connected with upper end cap and lower end cap, a plurality of first and last connected graphite blocks are connected and fixed between the upper head and lower head, corresponding graphite block upper and lower ends are respectively provided with the boss and the recess connected with adjacent graphite block, the side wall of boss and recess is respectively provided with multiple levels of sealing groove, the end face of boss and recess is respectively provided with multiple insertion slots and buckles for connecting adjacent graphite blocks.
[0007] Further, the multi-stage sealing groove comprises a first sealing groove, a second sealing groove and a third sealing groove arranged from top to bottom, and the first sealing groove, the second sealing groove and the third sealing groove are respectively provided with an elastic rubber sealing ring, a graphite woven sealing ring and a metal bellows sealing ring.
[0008] Further, the upper end cover and the lower end cover are respectively provided with a connecting convex platform and a recess corresponding to the graphite block at the head end and the graphite block at the tail end.
[0009] Further, the insertion groove is provided with an elastic card.
[0010] Further, the buckle is provided with a clamping groove in the middle portion for clamping the elastic card.
[0011] Further, the buckle is provided with an inclined surface at the end.
[0012] Further, the graphite block is made of phenolic resin impregnated graphite.
[0013] Compared with the prior art, the heat exchanger has the advantages that the heat exchange core is replaced by the graphite heat exchange core impregnated with phenolic resin, the leakage of the heat exchanger is fundamentally solved, the connection structure between the graphite blocks is replaced by the convex platform and the recess which are matched with each other, the multi-stage sealing and the insertion groove and the buckle are arranged in the connection structure, the problem of poor sealing is better solved, the normal operation of the heat exchanger is ensured, the heat exchange efficiency is improved, the energy loss is reduced, and the safety hazard is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 is a three-dimensional structure schematic view of the utility model;
[0015] Figure 2 is Figure 1 an enlarged view of A part in the figure;
[0016] Figure 3 is Figure 1 an enlarged view of B part in the figure;
[0017] In the figure: the heat exchanger shell 1, the upper end cover 2, the lower end cover 3, the upper end cover 4, the lower end cover 5, the graphite block 6, the convex platform 7, the recess 8, the multi-stage sealing groove 9, the insertion groove 10, the buckle 11, the first sealing groove 12, the second sealing groove 13, the third sealing groove 14, the elastic rubber sealing ring 15, the graphite woven sealing ring 16, the metal bellows sealing ring 17, the elastic card 18. DETAILED DESCRIPTION
[0018] The utility model will be described in further detail in combination with the drawings and the specific implementation:
[0019] As Figure 1 ,2 As shown in FIGS. 1-3, a heat exchanger comprises a heat exchanger shell 1, two ends of the heat exchanger shell 1 are respectively connected with an upper head 2 and a lower head 3, the upper head 2 and the lower head 3 are respectively flange-connected with an upper end cover 4 and a lower end cover 5, a plurality of graphite blocks 6 connected in series are fixed between the upper head 2 and the lower head 3, corresponding to upper and lower ends of the graphite blocks 6, a boss 7 and a groove 8 connected with adjacent graphite blocks 6 are respectively arranged, a plurality of sealing grooves 9 are respectively arranged on side walls of the boss 7 and the groove 8, and a plurality of plug-in grooves 10 and buckles 11 for connecting adjacent graphite blocks 6 are respectively arranged on end faces of the boss 7 and the groove 8.
[0020] As shown in FIGS. 1-3, Figure 2 , 3 The plurality of sealing grooves 9 comprise a first sealing groove 12, a second sealing groove 13 and a third sealing groove 14 arranged in sequence from top to bottom, and the first sealing groove 12, the second sealing groove 13 and the third sealing groove 14 are respectively provided with an elastic rubber sealing ring 15, a graphite woven sealing ring 16 and a metal bellows sealing ring 17.
[0021] As shown in FIGS. 1-3, Figure 1 , 2 The inner sides of the upper head 2 and the lower head 3 are respectively provided with the boss 7 and the groove 8 corresponding to the graphite block 6 at the head end and the graphite block 6 at the tail end.
[0022] As shown in FIGS. 1-3, Figure 2 , 3 The plug-in groove 10 is provided with an elastic card 18.
[0023] As shown in FIGS. 1-3, Figure 2 , 3 The buckle 11 is provided with a clamping groove for clamping the elastic card 18 in the middle part.
[0024] As shown in FIGS. 1-3, Figure 2 , 3 The buckle 11 is provided with an inclined surface at the end.
[0025] As shown in FIGS. 1-3, Figure 1 , The material of the graphite block 6 is phenolic resin impregnated graphite.
[0026] The implementation principle of the heat exchanger of the embodiment of the present application is as follows:
[0027] When the heat exchanger is installed, the boss 7 of the graphite block 6 is put into the groove 8 of the adjacent graphite block 6, after being put in, the buckle 11 corresponding to the bottom of the groove 8 is inserted into the plug-in groove 10 at the end of the boss 7, because the end of the buckle 11 is an inclined surface, when the buckle 11 is pressed down, the elastic card 18 is extruded to generate a rebound force, after the buckle 11 is completely inserted into the plug-in groove 10, the elastic card 18 will lock the buckle 11, so as to realize the connection and fixation of the adjacent graphite blocks 6.
[0028] After the adjacent graphite blocks 6 are connected, the boss 7 and the groove 8 form the complete first sealing groove 12 and the second sealing groove 13 and the third sealing groove 14, and the elastic rubber sealing ring 15 and the graphite woven sealing ring 16 and the metal bellows sealing ring 17 annular sealing groove are sequentially placed inside to seal the connection of the adjacent graphite blocks 6, prevent the connection from leaking when heat exchange is performed, the structure avoids the phenomenon of tube and tube plate leakage in the original design, reduces the production cost, and also solves the problem of poor sealing performance in the graphite block 6 splicing operation.
[0029] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. A heat exchanger comprising a heat exchanger shell (1), two ends of the heat exchanger shell (1) are respectively connected with an upper head (2) and a lower head (3), the upper head (2) and the lower head (3) are respectively flange connected with an upper end cover (4) and a lower end cover (5), characterized in that: A plurality of graphite blocks (6) are connected and fixed between the upper head (2) and the lower head (3) in series, and a boss (7) and a groove (8) are arranged at the upper and lower ends of the graphite blocks (6) respectively and connected with adjacent graphite blocks (6), a plurality of sealing grooves (9) are arranged on the side walls of the boss (7) and the groove (8) respectively, and a plurality of plug-in grooves (10) and buckles (11) for connecting adjacent graphite blocks (6) are arranged on the end faces of the boss (7) and the groove (8) respectively.
2. A heat exchanger according to claim 1, characterised in that: The plurality of sealing grooves (9) comprise a first sealing groove (12), a second sealing groove (13) and a third sealing groove (14) arranged in sequence from inside to outside, and elastic rubber sealing rings (15), graphite woven sealing rings (16) and metal bellows sealing rings (17) are arranged in the first sealing groove (12), the second sealing groove (13) and the third sealing groove (14) respectively.
3. A heat exchanger according to claim 1, wherein: Bosses (7) and grooves (8) corresponding to the graphite blocks (6) at the head and the tail are arranged in the inner sides of the upper head (2) and the lower head (3) respectively.
4. A heat exchanger according to claim 1, wherein: An elastic card (18) is arranged in the plug-in groove (10).
5. A heat exchanger as claimed in claim 1, wherein: A clamping groove for clamping the elastic card (18) is arranged in the middle of the buckle (11).
6. A heat exchanger according to claim 4, wherein: An inclined surface is arranged at the end of the buckle (11).
7. A heat exchanger as claimed in claim 1, wherein: The material of the graphite block (6) is phenolic resin impregnated graphite.