CN217504437U - Sleeve type heat exchanger - Google Patents
Sleeve type heat exchanger Download PDFInfo
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- CN217504437U CN217504437U CN202220964563.2U CN202220964563U CN217504437U CN 217504437 U CN217504437 U CN 217504437U CN 202220964563 U CN202220964563 U CN 202220964563U CN 217504437 U CN217504437 U CN 217504437U
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Abstract
The utility model provides a bushing type heat transfer device relates to indirect heating equipment technical field, include: the shell side inlet and the shell side outlet are oppositely arranged on the shell side; the inner pipe penetrates through the pipe shell, the inner pipe and the pipe shell are arranged at intervals, and the inner pipe is provided with a pipe pass inlet and a pipe pass outlet which are arranged oppositely; and the heat exchange fins are arranged between the tube shell and the inner tube, and the heat exchange fins are provided with hydrophobic modified layers. Through set up the hydrophobic modified layer on heat transfer fin, utilize the hydrophobic modified layer can prevent that the condensation steam from attaching to and forming noncondensable gaseous layer on heat transfer fin, and then reduced the thermal resistance on the heat transfer fin, improved heat transfer fin's heat exchange efficiency.
Description
Technical Field
The utility model relates to a indirect heating equipment technical field, in particular to bushing type heat transfer device.
Background
The vapor condensation technique is a phase-change heat transfer technique which is widely applied in industry. However, in the case of the steam condensation technique, since a part of the gas that cannot be condensed exists in the condensed gas, and the part of the gas accumulates with time, a non-condensable gas layer gradually forms near the interface between the cold medium and the hot medium, the steam must pass through the non-condensable gas layer to exchange heat with the cold fluid. During the condensation process of the vapor containing the non-condensable gas, the non-condensable gas layer can generate a thermal resistance effect, and further the heat transfer efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above defect of prior art, the embodiment of the utility model provides a technical problem that will solve provides a bushing type heat transfer device, through set up the hydrophobic modified layer on heat transfer fin, utilizes the hydrophobic modified layer can prevent that condensation steam from forming noncondensable gas layer on attaching to heat transfer fin, and then has reduced the thermal resistance on the heat transfer fin, has improved heat transfer fin's heat exchange efficiency.
The above object of the utility model can be realized by adopting the following technical scheme, the utility model provides a bushing type heat transfer device, include:
the shell side inlet and the shell side outlet are oppositely arranged on the shell side;
the inner pipe penetrates through the pipe shell, the inner pipe and the pipe shell are arranged at intervals, and the inner pipe is provided with a pipe pass inlet and a pipe pass outlet which are arranged oppositely;
and the heat exchange fins are arranged between the tube shell and the inner tube, and the heat exchange fins are provided with hydrophobic modified layers.
The utility model discloses an in a preferred embodiment, follow the axis direction of inner tube, heat transfer fin is the spiral setting and is in the tube with between the inner tube for form the spiral and overflow the passageway.
In a preferred embodiment of the present invention, the heat exchange fins and the outer surface of the inner tube are both provided with a hydrophobic modification layer.
In a preferred embodiment of the present invention, the wetting angle of the hydrophobic modification layer is 120 ° to 140 °.
In a preferred embodiment of the present invention, the inner tube includes a middle tube section and a connecting tube section disposed at two ends of the middle tube section, and the heat exchange fins are disposed in the middle tube section.
In a preferred embodiment of the present invention, the heat exchange fins are spirally wound on the inner tube 30 to 50 times per one foot in the axial direction of the inner tube.
In a preferred embodiment of the present invention, the tube shell is inclined from the shell-side inlet to the shell-side outlet.
The utility model discloses an in a preferred embodiment, bushing type heat transfer device still includes the mounting bracket, the tube passes through the mounting bracket is the slope setting, the mounting bracket includes the bottom plate and sets up support on the bottom plate, the one end setting of tube is in on the support, the other end setting of tube is in on the bottom plate.
In a preferred embodiment of the present invention, the tube housing includes an outer tube, a mounting flange disposed at both ends of the outer tube, and an end cap disposed on the mounting flange, the end cap is detachably connected to the mounting flange, and the end cap is provided with an overflowing hole; the inner tube is arranged in the outer tube in a penetrating mode, two ends of the inner tube are respectively connected with the corresponding end covers, and the tube pass inlet and the tube pass outlet are respectively communicated with the corresponding overflowing holes.
The utility model discloses an in a preferred embodiment, be equipped with the mounting groove on the end cover, the tank bottom at the mounting groove is seted up to the discharge orifice, the both ends difference joint of inner tube is in the correspondence in the mounting groove, the tank bottom of mounting groove is equipped with seal gasket, the both ends crimping of inner tube is corresponding form sealedly on the seal gasket.
In a preferred embodiment of the present invention, a sealing ring is disposed between the end cap and the mounting flange, and the end cap is crimped to form a seal with the mounting flange.
The technical scheme of the utility model following beneficial effect that is showing has:
when the double-pipe heat exchange device is used, a first heat exchange medium enters the pipe shell from the shell side inlet and then flows out of the pipe shell from the shell side outlet; the second heat exchange medium enters the inner pipe from the pipe side inlet and then flows out of the inner pipe from the pipe side outlet; the first heat exchange medium and the second heat exchange medium exchange heat through the inner tube and the heat exchange fins, so that a heat exchange process is realized.
When the steam condensation technology is used, a part of gas which cannot be condensed exists in the condensed gas, the part of gas accumulates with time, a layer of non-condensable gas is gradually formed near the interface of a cold medium and a hot medium, and steam must pass through the layer of non-condensable gas to exchange heat with cold fluid. During the condensation process of the vapor containing the non-condensable gas, the non-condensable gas layer can generate a thermal resistance effect, and further the heat transfer efficiency is reduced. This application is through being equipped with the hydrophobic modified layer on heat transfer fin, utilizes the hydrophobic modified layer can prevent that condensation steam from forming noncondensable gaseous layer on attaching to heat transfer fin, and then has reduced the thermal resistance on the heat transfer fin, has improved heat transfer fin's heat exchange efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for helping the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. The skilled person in the art can, under the teaching of the present invention, choose various possible shapes and proportional dimensions to implement the invention according to the specific situation.
FIG. 1 is a schematic side view of the double pipe heat exchanger;
FIG. 2 is a schematic top view of the double pipe heat exchanger;
FIG. 3 is a schematic view of an installation structure of the inner tube and the heat exchange fins;
FIG. 4 is a schematic side view of the inner tube and the heat exchange fins;
FIG. 5 is a schematic view of a partial cross-sectional structure of the heat exchange fin;
fig. 6 is a schematic illustration of an explosive structure of the cartridge;
FIG. 7 is a front view of the end cap;
fig. 8 is a schematic view of the mounting structure of the mounting bracket.
Reference numerals of the above figures:
1. a pipe shell; 11. a shell side inlet; 12. a shell side outlet; 13. an outer tube; 14. installing a flange; 15. an end cap; 151. an overflowing hole; 152. mounting grooves; 16. sealing gaskets; 17. a seal ring;
2. an inner tube; 21. a tube side inlet; 22. a tube side outlet; 23. a middle tube section; 24. connecting the pipe sections;
3. heat exchange fins;
4. a hydrophobically modified layer;
5. a mounting frame; 51. a base plate; 52. and (4) a support.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 8 in combination, in an embodiment of the present application, there is provided a double pipe heat exchanger, including: the device comprises a shell pipe 1, wherein the shell pipe 1 is provided with a shell side inlet 11 and a shell side outlet 12 which are oppositely arranged; the inner tube 2 penetrates through the tube shell 1, the inner tube 2 and the tube shell 1 are arranged at intervals, and the inner tube 2 is provided with a tube side inlet 21 and a tube side outlet 22 which are oppositely arranged; and the heat exchange fins 3 are arranged between the tube shell 1 and the inner tube 2, and the heat exchange fins 3 are provided with hydrophobic modified layers 4.
In general, when the double-pipe heat exchanger according to the present application is used, the first heat exchange medium enters the shell-and-tube 1 from the shell-and-tube inlet 11, and then flows out of the shell-and-tube 1 from the shell-and-tube outlet 12; the second heat exchange medium enters the inner tube 2 from the tube side inlet 21 and then flows out of the inner tube 2 from the tube side outlet 22; the first heat exchange medium and the second heat exchange medium exchange heat through the inner tube 2 and the heat exchange fins 3, so that a heat exchange process is realized.
When the double-pipe heat exchange device is used, the shell-side inlet 11 and the shell-side outlet 12, and the tube-side inlet 21 and the tube-side outlet 22 can be butted on a heat exchange medium conveying pipeline. In order to increase the convenience of pipe orifice connection, connecting flanges can be arranged on the shell side inlet 11, the shell side outlet 12, the pipe side inlet 21 and the pipe side outlet 22, and are conveniently butted with other pipe orifices through the connecting flanges.
Specifically, the first heat exchange medium may be steam. When steam is used for condensation heat exchange, a part of gas which cannot be condensed exists in the condensed gas, the part of gas accumulates with time, a non-condensable gas layer is gradually formed near a cold-hot medium interface, and the steam can exchange heat with cold fluid only by passing through the non-condensable gas layer. During the condensation process of the vapor containing the non-condensable gas, the non-condensable gas layer can generate a thermal resistance effect, and further the heat transfer efficiency is reduced. In order to avoid the phenomenon, the hydrophobic modification layer 4 is arranged on the heat exchange fins 3 in the heat exchange fin structure, the hydrophobic modification layer 4 is utilized to prevent condensed steam from attaching to the heat exchange fins 3 to form a non-condensable gas layer, so that the thermal resistance of the heat exchange fins 3 is reduced, and the heat exchange efficiency of the heat exchange fins 3 is improved.
In the present embodiment, referring to fig. 1, 2 and 3, the heat exchanging fins 3 are spirally disposed between the tube shell 1 and the inner tube 2 along the axial direction of the inner tube 2 for forming spiral flow channels.
In the present embodiment, the heat exchange fins 3 are spirally wound on the inner tube 2 30 to 50 times per one foot in the axial direction of the inner tube 2. Of course, the number of times of the spiral winding of the heat exchange fin 3 can be adjusted by a designer according to the use requirement, which is not limited herein.
The heat exchange distance of the heat exchange medium in the tube shell 1 can be prolonged by arranging the heat exchange fins 3 in a spiral shape, the contact area of the heat exchange medium and the heat exchange fins 3 is increased, and the heat exchange efficiency can be improved. Of course, the designer may set the heat exchanging fin 3 in other shapes, which is not limited herein.
In this embodiment, referring to fig. 4 and 5, the heat exchange fins 3 and the outer surface of the inner tube 2 are both provided with a hydrophobic modification layer 4. The hydrophobic modification layer 4 can prevent condensed steam from attaching and accelerate the liquid droplets to slide off. Through set up hydrophobic modified layer 4 simultaneously on heat transfer fin 3 and inner tube 2, utilize hydrophobic modified layer 4 can prevent that condensation steam from attaching to the surface at heat transfer fin 3 and inner tube 2 and forming the non-condensable gas layer, and then reduced the thermal resistance on heat transfer fin 3 and the inner tube 2, improved the heat exchange efficiency of heat transfer fin 3 and inner tube 2. Of course, the designer may also arrange the hydrophobically modified layer 4 on the inner wall of the envelope 1, without limitation.
In this embodiment, the wetting angle of the hydrophobically modified layer 4 is 120 ° to 140 °. The wetting angle of the hydrophobic modification layer 4 is set to be 120-140 degrees, so that condensed steam can form a sticky wet state on the hydrophobic modification layer 4, a non-condensable gas layer is prevented from being formed on the heat exchange fins 3 and the inner tube 2, the heat exchange fins 3 and the inner tube 2 can be in direct contact with a heat exchange medium, and the heat exchange efficiency of the heat exchange fins 3 and the heat exchange efficiency of the inner tube 2 are improved.
Wherein, when the wetting angle of the surface of the object is between 0 and 90 degrees, the liquid drops can soak the surface of the object, and a liquid film is easily formed on the surface of the object; when the wetting angle of the surface of the object is between 90 and 180 degrees, the liquid drops can adhere to the surface of the object, and a liquid film is not easy to form on the surface of the object; when the wetting angle of the surface of the object is 180 degrees, the liquid drops cannot wet the surface of the object, and a liquid film cannot be formed on the surface of the object.
The hydrophobic modification layer 4 can be formed on the surfaces of the heat exchange fins 3 and the inner tube 2 by changing the roughness of the surfaces of the heat exchange fins 3 and the inner tube 2.
In this embodiment, the heat exchange fins 3 and the inner tube 2 may be immersed in hydrochloric acid for 10min to remove the oxide layers on the surfaces of the heat exchange fins 3 and the inner tube 2; then, the heat exchange fins 3 and the inner tube 2 are placed in acetone for primary ultrasonic cleaning, then the heat exchange fins 3 and the inner tube 2 are placed in ethanol for primary ultrasonic cleaning, then the heat exchange fins 3 and the inner tube 2 are placed in deionized water for secondary ultrasonic cleaning, and the time of each ultrasonic cleaning can be controlled to be about 15 min; and (3) putting the heat exchange fin 3 and the inner tube 2 after being cleaned into etching solution, etching and soaking for 100min, taking out, putting into deionized water, cleaning for 10min, and finally putting into a 120 ℃ oven for drying and keeping for 2 hours. Wherein, the etching solution can be formed by adding concentrated hydrochloric acid into ferric trichloride solution.
Of course, the designer may also use other methods to form the hydrophobic modification layer 4, for example, the external attachment method is used to arrange the hydrophobic modification layer 4 on the surfaces of the heat exchange fin 3 and the inner tube 2, and the like, which is not limited herein.
In this embodiment, the inner tube 2 includes an intermediate tube section 23 and connecting tube sections 24 disposed at both ends of the intermediate tube section 23, and the heat exchange fins 3 are disposed in the intermediate tube section 23.
The middle pipe section 23 and the connecting pipe sections 24 at the two ends of the middle pipe section 23 can be integrally arranged. Specifically, the length of the connecting pipe section 24 may be set to about 60mm in the axial direction of the intermediate pipe section 23. By arranging the heat exchange fins 3 in the middle pipe section 23, a large overflowing gap can be formed between the connecting pipe section 24 and the pipe shell 1, so that the heat exchange medium can enter the overflowing channel conveniently, and liquid drops condensed in the overflowing channel can be discharged conveniently.
After heat exchange is carried out on heat exchange steam in the tube shell 1, partial steam can be condensed to form liquid drops, and the liquid drops are attached to the heat exchange fins 3 and the inner tube 2 to have an isolation effect, so that the steam cannot directly contact the heat exchange fins 3 and the inner tube 2, a thermal resistance effect is further generated, and the heat exchange efficiency among the heat exchange fins 3, the inner tube 2 and the steam is weakened. In order to prevent liquid droplets from adhering to the heat exchange fins 3 and the inner tube 2, in this embodiment, the tube shell 1 is inclined from the shell-side inlet 11 to the shell-side outlet 12.
The inclined tube shell 1 can be favorable for rapidly discharging liquid drops condensed in the tube shell 1, and the liquid drops can be prevented from being attached to the heat exchange fins 3 and the inner tube 2 to form a liquid layer, so that heat exchange steam can be more directly contacted with the heat exchange fins 3 and the inner tube 2, and further the heat exchange efficiency is improved.
Specifically, referring to fig. 8, the tube-in-tube heat exchanger further includes a mounting bracket 5, the tube shell 1 is disposed obliquely through the mounting bracket 5, the mounting bracket 5 includes a bottom plate 51 and a support 52 disposed on the bottom plate 51, one end of the tube shell 1 is disposed on the support 52, and the other end of the tube shell 1 is disposed on the bottom plate 51.
Of course, the designer may also adjust the structure of the mounting frame 5 and the inclination angle of the mounting frame 5 according to the use requirement, which is not limited herein.
In this embodiment, referring to fig. 6 and 7, the cartridge 1 includes an outer tube 13, mounting flanges 14 disposed at two ends of the outer tube 13, and end caps 15 disposed on the mounting flanges 14, where the end caps 15 are detachably connected to the mounting flanges 14, and the end caps 15 are provided with overflowing holes 151; the inner tube 2 is arranged in the outer tube 13 in a penetrating manner, two ends of the inner tube 2 are respectively connected with the corresponding end covers 15, and the tube pass inlet 21 and the tube pass outlet 22 are respectively communicated with the corresponding overflowing holes 151.
The installation efficiency is improved by matching the installation flange 14 with the end cover 15, the inner pipe 2 can be fixed in the outer pipe 13 more quickly, and the inner pipe 2 can be conveniently taken out of the outer pipe 13 for maintenance in the following process. Specifically, the mounting flange 14 and the end cap 15 may be removably coupled by coupling bolts.
In this embodiment, the end cap 15 is provided with an installation groove 152, the overflowing hole 151 is opened at the bottom of the installation groove 152, two ends of the inner tube 2 are respectively clamped in the corresponding installation grooves 152, the bottom of the installation groove 152 is provided with a sealing gasket 16, and two ends of the inner tube 2 are crimped on the corresponding sealing gasket 16 to form a seal.
Specifically, the mounting groove 152 may be disposed at a middle portion of the end cover 15. The inner pipe 2 can be fixed in the outer pipe 13 through the mounting grooves 152 on the end covers 15 at two sides, so that the axis of the inner pipe 2 and the axis of the outer pipe 13 are arranged in a collinear manner, an overflowing gap is formed between the inner pipe 2 and the outer pipe 13 at equal intervals, the effect of uniform steam distribution can be achieved, and the heat exchange uniformity between the inner pipe 2 and the outer pipe 13 is improved. Of course, the designer may also provide other sealing structures between the end cap 15 and the inner tube 2, which is not limited herein.
Further, a sealing ring 17 is arranged between the end cover 15 and the mounting flange 14, and the end cover 15 is crimped on the sealing ring 17 to form a seal with the mounting flange 14. The end cover 15 and the mounting flange 14 can be sealed through the sealing ring 17, and steam leakage in the using process is prevented. Of course, the designer may also provide other sealing structures between the end cap 15 and the mounting flange 14, and this is not limiting.
When the double-pipe heat exchange device is used, a first heat exchange medium enters the pipe shell 1 from the shell side inlet 11 and then flows out of the pipe shell 1 from the shell side outlet 12; the second heat exchange medium enters the inner tube 2 from the tube side inlet 21 and then flows out of the inner tube 2 from the tube side outlet 22; the first heat exchange medium and the second heat exchange medium exchange heat through the inner tube 2 and the heat exchange fins 3, so that a heat exchange process is realized.
This application is through being equipped with hydrophobic modified layer 4 on heat transfer fin 3, utilizes hydrophobic modified layer 4 can prevent that condensation steam from forming noncondensable gaseous layer on attaching to heat transfer fin 3, and then has reduced the thermal resistance on heat transfer fin 3, has improved heat transfer fin 3's heat exchange efficiency.
For example, when the steam condensation heat exchange operation is performed, the height of the heat exchange fins 3 may be set to about 6mm, and 35 turns of the heat exchange fins 3 are spirally arranged on each inch of the inner tube 2. Through tests, when the heat exchange fins 3 are provided with the hydrophobic modification layers 4 according to the method, the heat exchange efficiency of the sleeve type heat exchange device is improved by about 20% compared with that of the sleeve type heat exchange device without the hydrophobic modification layers 4.
Of course, the height of the heat exchange fins 3 may be set to about 8.6mm, and 45 turns of the heat exchange fins 3 may be spirally arranged on each inch of the inner tube 2. Through tests, the heat exchange efficiency of the sleeve type heat exchange device is improved by about 15% compared with that of the sleeve type heat exchange device without the hydrophobic modification layer 4.
All articles and references disclosed, including patent applications and publications, are incorporated by reference herein for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional. A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
The embodiments in the present specification are all described in a progressive manner, and each embodiment focuses on differences from other embodiments, and portions that are the same and similar between the embodiments may be referred to each other. The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. A double pipe heat exchanger device, comprising:
the shell side inlet and the shell side outlet are oppositely arranged on the shell side;
the inner pipe penetrates through the pipe shell, the inner pipe and the pipe shell are arranged at intervals, and the inner pipe is provided with a pipe pass inlet and a pipe pass outlet which are arranged oppositely;
and the heat exchange fins are arranged between the tube shell and the inner tube, and the heat exchange fins are provided with hydrophobic modified layers.
2. The tube-in-tube heat exchange device according to claim 1, wherein the heat exchange fins are spirally disposed between the tube shell and the inner tube in the axial direction of the inner tube, for forming a spiral flow passage.
3. The tube-in-tube heat exchange device according to claim 2, wherein the heat exchange fins and the outer surface of the inner tube are provided with a hydrophobic modification layer.
4. The tube-in-tube heat exchange device according to claim 1 or 3, wherein the wetting angle of the hydrophobic modification layer is 120 ° to 140 °.
5. The tube-in-tube heat exchange device according to claim 2, wherein the inner tube comprises an intermediate tube section and a connection tube section provided at both ends of the intermediate tube section, and the heat exchange fins are provided in the intermediate tube section.
6. The tube-in-tube heat exchange device according to claim 5, wherein the heat exchange fins are spirally wound on the inner tube 30 to 50 times per one foot in the axial direction of the inner tube.
7. A tube-in-tube heat exchange device according to claim 1, wherein the shell-and-tube is inclined from the shell-side inlet to the shell-side outlet.
8. The tube-in-tube heat exchanging device according to claim 7, further comprising a mounting bracket through which the tube housing is slantingly disposed, the mounting bracket comprising a bottom plate and a support provided on the bottom plate, one end of the tube housing being provided on the support, and the other end of the tube housing being provided on the bottom plate.
9. The tube-in-tube heat exchange device of claim 1, wherein the tube shell comprises an outer tube, a mounting flange arranged at both ends of the outer tube, and an end cap arranged on the mounting flange, the end cap is detachably connected with the mounting flange, and the end cap is provided with an overflowing hole; the inner tube is arranged in the outer tube in a penetrating mode, two ends of the inner tube are respectively connected with the corresponding end covers, and the tube pass inlet and the tube pass outlet are respectively communicated with the corresponding overflowing holes.
10. The tube-in-tube heat exchanger according to claim 9, wherein the end cap is provided with a mounting groove, the overflowing hole is opened at a bottom of the mounting groove, two ends of the inner tube are respectively engaged with the corresponding mounting grooves, a sealing gasket is disposed at the bottom of the mounting groove, and two ends of the inner tube are pressed against the corresponding sealing gasket to form a seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220964563.2U CN217504437U (en) | 2022-04-25 | 2022-04-25 | Sleeve type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220964563.2U CN217504437U (en) | 2022-04-25 | 2022-04-25 | Sleeve type heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217504437U true CN217504437U (en) | 2022-09-27 |
Family
ID=83350350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220964563.2U Active CN217504437U (en) | 2022-04-25 | 2022-04-25 | Sleeve type heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217504437U (en) |
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2022
- 2022-04-25 CN CN202220964563.2U patent/CN217504437U/en active Active
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