CN214501292U - Sealing structure and heat exchanger - Google Patents
Sealing structure and heat exchanger Download PDFInfo
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- CN214501292U CN214501292U CN202120479590.6U CN202120479590U CN214501292U CN 214501292 U CN214501292 U CN 214501292U CN 202120479590 U CN202120479590 U CN 202120479590U CN 214501292 U CN214501292 U CN 214501292U
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- heat exchange
- exchange tube
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- sealing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model discloses a seal structure and heat exchanger relates to flue gas waste heat recovery heat transfer technical field. This seal structure is used for sealing the junction of glass heat exchange tube and tube sheet, has seted up trapezoidal hole on the tube sheet, and the trapezoidal hole setting is worn to establish by the glass heat exchange tube, and seal structure includes: the elastic sealing plug is provided with a through hole for the glass heat exchange tube to penetrate through, and the elastic sealing plug is arranged in the trapezoidal hole; the pressing plate is pressed at one end of the elastic sealing plug, which is far away from the trapezoidal hole; and the sealing fastener is fixedly connected with the pressing plate and the tube plate so that the elastic sealing plug is abutted to the glass heat exchange tube. The utility model discloses a to the sealing of the junction of glass heat exchange tube and tube sheet, avoided the damage to the glass heat exchange tube, prolonged its life, simple structure, leakproofness are good, stability is good, have ensured the heat exchange efficiency of heat exchanger.
Description
Technical Field
The utility model relates to a flue gas waste heat recovery heat transfer technical field especially relates to a seal structure and heat exchanger.
Background
The flue gas waste heat recovery heat exchanger exchanges heat and recovers waste heat in flue gas through the heat exchange tube, so that secondary utilization of heat is realized, and the energy utilization rate is improved. At present, various flue gas waste heat recovery heat exchangers are troubled by the problem of low-temperature dew point corrosion, the applicable waste heat recovery flue gas is generally over 200 ℃, but most industrial flue gas emission temperature is 100-160 ℃, if the flue gas is directly emitted, a large amount of disposable energy is wasted, and if the existing waste heat recovery heat exchangers are utilized, the flue gas contains a large amount of corrosion components such as NOx, SOx and the like, and water is condensed and the corrosion components are combined to generate various corrosion components at low temperature to corrode equipment.
Based on the defects, researchers replace the heat exchange tube made of the glass material with the heat exchange tube made of the stainless steel material, so that the corrosion problem is solved, the manufacturing cost is saved, and the glass heat exchange tube is easy to clean. But the glass heat exchange tube and the tube plate can not be welded and can only be sealed by adopting a sealing structure, but the existing sealing structure has poor sealing performance and stability and influences the heat exchange efficiency.
Accordingly, a sealing structure and a heat exchanger are needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a seal structure and heat exchanger has realized the sealed of the junction of glass heat exchange tube and tube sheet, has avoided damage, its life of extension to the glass heat exchange tube, and simple structure, leakproofness are good, stability is good, have ensured the heat exchange efficiency of heat exchanger.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a seal structure for the junction to glass heat exchange tube and tube sheet seals, trapezoidal hole has been seted up on the tube sheet, the glass heat exchange tube is worn to establish trapezoidal hole setting, seal structure includes:
the elastic sealing plug is provided with a through hole for the glass heat exchange tube to penetrate through, and the elastic sealing plug is arranged in the trapezoidal hole;
the pressing plate is pressed at one end of the elastic sealing plug, which is far away from the trapezoidal hole;
and the sealing fastener is fixedly connected with the pressing plate and the tube plate so that the elastic sealing plug is abutted to the glass heat exchange tube.
Optionally, a stopping step is arranged on the tube plate, and the elastic sealing plug abuts against the stopping step.
Optionally, the sealing fastener includes a screw and a nut, one end of the screw is fixedly connected to the tube plate, the other end of the screw penetrates out of the pressing plate, and the nut is in threaded connection with the penetrating end of the screw.
Optionally, the sealing fastener further comprises an elastic washer, the elastic washer is sleeved on the screw rod and located between the nut and the pressure plate.
Optionally, the screw is arranged perpendicular to the tube sheet.
Optionally, the sealing fastener is provided with a plurality of sealing fasteners, and the plurality of sealing fasteners are uniformly arranged along the circumferential direction of the glass heat exchange tube.
Optionally, the pressing plate is provided with an avoiding hole for the glass heat exchange tube to penetrate through, and the inner diameter of the avoiding hole is 2mm-3mm larger than the outer diameter of the glass heat exchange tube.
Optionally, the inner diameter of the through hole of the elastic sealing plug is 0.05mm-0.1mm larger than the outer diameter of the glass heat exchange tube.
Optionally, a plurality of annular grooves are spaced on the inner wall of the through hole of the elastic sealing plug.
The utility model also provides a heat exchanger, including glass heat exchange tube and tube sheet, trapezoidal hole has been seted up on the tube sheet, the glass heat exchange tube is worn to establish trapezoidal hole setting, the heat exchanger still includes as above seal structure, the elasticity sealing plug set up in trapezoidal hole, the glass heat exchange tube is worn to establish the elasticity sealing plug sets up, sealing fastener with the tube sheet with the equal fixed connection of clamp plate is so that the elasticity sealing plug with glass heat exchange tube butt.
The utility model has the advantages that:
the utility model provides a seal structure and heat exchanger, through with sealing fastener and the equal fixed connection of clamp plate and tube sheet, elastic sealing stopper makes the elastic sealing stopper finally with glass heat exchange tube butt towards the motion of glass heat exchange tube in the trapezoidal hole under the pressure effect of clamp plate, thereby realize sealing between tube sheet and the glass heat exchange tube, avoid flue gas leakage among the heat transfer process, ensure heat exchange efficiency, the flexible butt of elastic sealing stopper and glass heat exchange tube simultaneously, can avoid the damage to the glass heat exchange tube, prolong its life, look at wholly, this seal structure simple structure, the leakproofness is good, good stability, the heat exchange efficiency of heat exchanger has been ensured.
Drawings
Fig. 1 is a schematic view of an assembly structure of a sealing structure provided by an embodiment of the present invention;
fig. 2 is a schematic view of a partial structure of a heat exchanger according to an embodiment of the present invention.
In the figure:
10. a glass heat exchange tube; 20. a tube sheet; 201. a trapezoidal hole; 202. a stopping step;
1. an elastic sealing plug; 2. pressing a plate; 21. avoiding holes; 3. a sealing fastener; 31. a screw; 32. a nut; 33. an elastic washer.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The embodiment discloses a sealing structure, as shown in fig. 1, the sealing structure is used for sealing a joint of a glass heat exchange tube 10 and a tube plate 20, a trapezoidal hole 201 is formed in the tube plate 20, and the glass heat exchange tube 10 is arranged by penetrating the trapezoidal hole 201.
The sealing structure comprises an elastic sealing plug 1, a pressing plate 2 and a sealing fastener 3, wherein the elastic sealing plug 1 is connected with the pressing plate 2, and the pressing plate 2 is connected with the sealing fastener 3. Optionally, a through hole for the glass heat exchange tube 10 to penetrate through is formed in the elastic sealing plug 1, and the elastic sealing plug 1 is disposed in the trapezoidal hole 201. The pressing plate 2 is pressed on one end of the elastic sealing plug 1 far away from the trapezoidal hole 201. The sealing fastener 3 is fixedly connected with the pressing plate 2 and the tube plate 20 so that the elastic sealing plug 1 is abutted against the glass heat exchange tube 10.
Through with sealing fastener 3 and clamp plate 2 and the equal fixed connection of tube sheet 20, elasticity sealing plug 1 makes elasticity sealing plug 1 finally and glass heat exchange tube 10 butt towards the motion of glass heat exchange tube 10 in trapezoidal hole 201 under the pressure effect of clamp plate 2, thereby realize the sealing between tube sheet 20 and the glass heat exchange tube 10, avoid heat transfer in-process flue gas leakage, ensure heat exchange efficiency, the flexible butt of elasticity sealing plug 1 and glass heat exchange tube 10 simultaneously, can avoid the damage to glass heat exchange tube 10, prolong its life, wholly see, this seal structure simple structure, the leakproofness is good, good stability, the heat exchange efficiency of heat exchanger has been ensured.
In this embodiment, the tube plate 20 is provided with a stopping step 202, and the stopping step 202 is disposed at the end of the narrower end of the trapezoidal hole 201.
Optionally, the elastic sealing plug 1 is inserted into the trapezoidal hole 201 to abut against the stop step 202, so as to limit the elastic sealing plug 1, and enhance the installation stability. In this embodiment, the elastic sealing plug 1 is made of heat-resistant rubber, and can withstand a temperature higher than the temperature of the medium in the heat exchanger. Elastic butt is realized to glass heat exchange tube 10 through setting up elasticity sealing plug 1, both realize sealed and can not cause the damage to glass heat exchange tube 10 again. Furthermore, the inner diameter of the through hole of the elastic sealing plug 1 is 0.05mm-0.1mm larger than the outer diameter of the glass heat exchange tube 10, and the glass heat exchange tube 10 can conveniently penetrate through the through hole and the sealing performance is also considered by setting a proper size. Of course, in other embodiments, the material and size of the elastic sealing plug 1 may be adjusted according to the need, and the present embodiment is not limited thereto.
In order to improve the sealing effect and reduce the leakage, a plurality of annular grooves are arranged on the inner wall of the through hole of the elastic sealing plug 1 at intervals. The annular groove can collect the medium leaked from the inside of the heat exchanger, and the medium is prevented from leaking out through the gap between the elastic sealing plug 1 and the tube plate 20, so that the sealing performance of the sealing structure is further enhanced. In this embodiment, there are 2-3 annular grooves with a depth of 1mm, and in other embodiments, the number and depth of the annular grooves may be set as required, which is not limited to this embodiment.
The pressing plate 2 mainly plays a role in pushing and extruding the elastic sealing plug 1 so that the elastic sealing plug 1 is abutted with the glass heat exchange tube 10 to realize sealing between the elastic sealing plug and the glass heat exchange tube. The pressing plate 2 is provided with an avoidance hole 21 for the glass heat exchange tube 10 to penetrate through, and the inner diameter of the avoidance hole 21 is 2mm-3mm larger than the outer diameter of the glass heat exchange tube 10. Further, the pressure plate 2 is provided with a mounting hole through which the sealing fastener 3 passes.
In order to ensure uniform stress and improve the stress stability of the glass heat exchange tube 10, a plurality of sealing fasteners 3 are arranged, and the plurality of sealing fasteners 3 are uniformly arranged along the circumferential direction of the glass heat exchange tube 10. Specifically, the sealing fastener 3 includes a screw 31 and a nut 32, one end of the screw 31 is fixedly connected to the tube plate 20, the other end of the screw 31 passes through the mounting hole of the pressure plate 2, and the nut 32 is threadedly connected to the through end of the screw 31. The pressure of the pressing plate 2 on the elastic sealing ring can be adjusted by screwing the nut 32, so that the fastening degree between the elastic sealing ring and the glass heat exchange tube 10 is appropriate, the sealing effect cannot be guaranteed due to over loosening, and the glass heat exchange tube 10 is easily damaged due to over tightening. In this embodiment, one end of the screw 31 is welded and fixed to the tube plate 20, and the screw 31 is perpendicular to the tube plate 20 so as to vertically and uniformly apply a force to the pressing plate 2, thereby preventing the glass heat exchange tube 10 from being damaged due to uneven force application.
Further, the sealing fastener 3 further comprises an elastic washer 33, the elastic washer 33 is sleeved on the screw 31, and the elastic washer 33 is located between the nut 32 and the pressure plate 2, so as to improve the mounting stability of the nut 32 and realize the elastic connection of the sealing fastener 3 and the pressure plate 2.
As shown in fig. 2, the embodiment also discloses a heat exchanger, including glass heat exchange tube 10 and tube sheet 20, trapezoidal hole 201 has been seted up on the tube sheet 20, the setting of trapezoidal hole 201 is worn to establish by glass heat exchange tube 10, this heat exchanger still includes seal structure as above, elasticity sealing plug 1 sets up in trapezoidal hole 201, the setting of elasticity sealing plug 1 is worn to establish by glass heat exchange tube 10, sealing fastener 3 and tube sheet 20 and the equal fixed connection of clamp plate 2 are so that elasticity sealing plug 1 and glass heat exchange tube 10 butt, thereby realize the sealing between glass heat exchange tube 10 and tube sheet 20, ensure the heat exchange efficiency of heat exchanger.
To sum up, the embodiment of the utility model provides a seal structure and heat exchanger has realized the sealed between tube sheet 20 and the glass heat exchange tube 10, avoids heat transfer in-process flue gas to leak, ensures heat exchange efficiency, has avoided the damage to glass heat exchange tube 10 simultaneously, prolongs its life. On the whole, the sealing structure has the advantages of simple structure, excellent sealing performance and good stability, and ensures the heat exchange efficiency of the heat exchanger.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a seal structure for the junction to glass heat exchange tube (10) and tube sheet (20) seals, its characterized in that, trapezoidal hole (201) have been seted up on tube sheet (20), glass heat exchange tube (10) are worn to establish trapezoidal hole (201) setting, seal structure includes:
the glass heat exchange tube comprises an elastic sealing plug (1), wherein a through hole for the glass heat exchange tube (10) to penetrate through is formed in the elastic sealing plug (1), and the elastic sealing plug (1) is arranged in a trapezoidal hole (201);
the pressing plate (2) is pressed at one end, far away from the trapezoidal hole (201), of the elastic sealing plug (1);
and the sealing fastener (3) is fixedly connected with the pressing plate (2) and the tube plate (20) so that the elastic sealing plug (1) is abutted to the glass heat exchange tube (10).
2. The sealing structure according to claim 1, characterized in that a stop step (202) is provided on the tube sheet (20), and the elastic sealing plug (1) abuts against the stop step (202).
3. The sealing structure according to claim 2, wherein the sealing fastener (3) comprises a screw rod (31) and a nut (32), one end of the screw rod (31) is fixedly connected with the tube plate (20), the other end of the screw rod (31) penetrates through the pressure plate (2) to be arranged, and the nut (32) is in threaded connection with the penetrating end of the screw rod (31).
4. The sealing structure according to claim 3, characterized in that the sealing fastener (3) further comprises an elastic washer (33), the elastic washer (33) is sleeved on the screw (31) and the elastic washer (33) is located between the nut (32) and the pressure plate (2).
5. The sealing structure according to claim 3, characterized in that the screw (31) is arranged perpendicular to the tube sheet (20).
6. The sealing structure according to claim 1, wherein the sealing fastener (3) is provided in plurality, and the plurality of sealing fasteners (3) are uniformly arranged along the circumferential direction of the glass heat exchange tube (10).
7. The sealing structure according to claim 1, wherein the pressing plate (2) is provided with an avoiding hole (21) for the glass heat exchange tube (10) to penetrate through, and the inner diameter of the avoiding hole (21) is 2mm-3mm larger than the outer diameter of the glass heat exchange tube (10).
8. The sealing structure according to claim 1, wherein the inner diameter of the through hole of the elastic sealing plug (1) is 0.05mm-0.1mm larger than the outer diameter of the glass heat exchange tube (10).
9. A sealing arrangement according to claim 1, characterised in that the inner wall of the bore of the resilient sealing plug (1) is provided with a plurality of annular grooves spaced apart.
10. The heat exchanger comprises a glass heat exchange tube (10) and a tube plate (20), and is characterized in that a trapezoidal hole (201) is formed in the tube plate (20), the glass heat exchange tube (10) penetrates through the trapezoidal hole (201), the heat exchanger further comprises a sealing structure according to any one of claims 1 to 9, an elastic sealing plug (1) is arranged in the trapezoidal hole (201), the glass heat exchange tube (10) penetrates through the elastic sealing plug (1), and a sealing fastener (3) is fixedly connected with the tube plate (20) and a pressing plate (2) so that the elastic sealing plug (1) is abutted to the glass heat exchange tube (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120479590.6U CN214501292U (en) | 2021-03-05 | 2021-03-05 | Sealing structure and heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120479590.6U CN214501292U (en) | 2021-03-05 | 2021-03-05 | Sealing structure and heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214501292U true CN214501292U (en) | 2021-10-26 |
Family
ID=78227122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120479590.6U Active CN214501292U (en) | 2021-03-05 | 2021-03-05 | Sealing structure and heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214501292U (en) |
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2021
- 2021-03-05 CN CN202120479590.6U patent/CN214501292U/en active Active
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