CN219869222U

CN219869222U - Heat exchanger and heat exchange system with same

Info

Publication number: CN219869222U
Application number: CN202320257352.XU
Authority: CN
Inventors: 史勇; 陈清华; 李亦昂; 蒋雪锋; 吴龙飞; 罗杨
Original assignee: Sinochem Energy Conservation Technology Beijing Co ltd
Current assignee: Sinochem Energy Conservation Technology Beijing Co ltd
Priority date: 2023-02-13
Filing date: 2023-02-13
Publication date: 2023-10-20
Anticipated expiration: 2033-02-13

Abstract

The utility model relates to the technical field of heat exchange, in particular to a heat exchanger and a heat exchange system with the same, wherein the heat exchanger comprises a shell and a heat exchange tube positioned in the shell, the shell comprises a middle tube section, and a shell side inlet part and a shell side outlet part which are respectively connected with two ends of the middle tube section, and the tube diameter of the shell side outlet part is smaller than that of the shell side inlet part; through setting the pipe diameter of the shell side outlet part to be smaller than the pipe diameter of the shell side inlet part, after a certain flow of refrigerant or heating medium enters the middle pipe section from the shell side inlet part, the refrigerant or heating medium can flow back at the joint of the middle pipe section and the shell side outlet part due to the smaller pipe diameter of the shell side outlet part, so that the refrigerant or heating medium can generate mixed flow in the radial direction of the middle pipe section, the utilization efficiency of the refrigerant or heating medium is improved, the refrigerant or heating medium can fully exchange heat with the medium to be heat-exchanged in the heat exchange pipe, and the heat exchange efficiency is further improved.

Description

Heat exchanger and heat exchange system with same

Technical Field

The utility model relates to the technical field of heat exchange, in particular to a heat exchanger and a heat exchange system with the same.

Background

A heat exchanger is a device for transferring heat from a hot fluid to a cold fluid to meet specified process requirements, and is an industrial application of convective heat transfer and thermal conduction. Exchangers can be divided into three main categories according to the principle and manner of heat exchange between cold and hot fluids: dividing wall, hybrid, and regenerative; among them, the dividing wall type heat exchanger is the most widely used type at present, and can be further divided into plate type, jacket type, immersion type, sleeve type, shell-and-tube type and the like. By introducing cold and hot fluid into different flow channels, heat transfer is realized by utilizing the wall surfaces between the flow channels.

The research direction of the existing double-pipe heat exchanger is to improve the heat exchange efficiency of the medium in the shell side and the tube side by improving the layout of the heat exchange tubes. For example, in the patent publication No. CN 214308278U, the heat flow pipe 2 is used for conveying heat flow, and the pipe wall is used as a heat exchange surface to realize heat exchange between the heat flow in the heat flow pipe 2 and the cold flow in the shell 1. In order to improve the heat exchange efficiency, the heat flow pipe 2 is arranged in a spiral shape, but in this scheme, although the heat exchange efficiency can be improved, the heat flow pipe 2 in a spiral shape is often inconvenient in subsequent maintenance, dirt and the like are easy to gather on a curved surface in the spiral shape, so that the heat exchange efficiency is gradually reduced.

In addition, the tightness of the existing double pipe heat exchanger is common, if the end part of the shell is not fixed in place, the leakage of the medium in the shell side is easy to occur, and the heat exchange efficiency is further affected; in addition, the outer shell of the existing double pipe heat exchanger is mostly an arc-shaped surface, and inconvenience is caused when the double pipe heat exchanger is installed and fixed.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. To this end, the utility model aims to provide a heat exchanger and a heat exchange system with the same.

In order to achieve the above object, a first aspect of the present utility model provides a heat exchanger, including a housing and a heat exchange tube located in the housing, the housing including a middle tube section, and a shell side inlet member and a shell side outlet member connected to both ends of the middle tube section, respectively, wherein a tube diameter of the shell side outlet member is smaller than a tube diameter of the shell side inlet member.

Optionally, the ratio of the tube diameters of the shell side inlet part and the shell side outlet part is 1:0.50-0.67.

Optionally, one end of the shell side inlet component and one end of the shell side outlet component, which are adjacent to the middle pipe section, are provided with a connecting pipe section, the connecting pipe section is inserted into the pipe cavity of the middle pipe section from the end part of the middle pipe section, and the outer wall of the connecting pipe section is tightly attached to the inner wall of the middle pipe section.

Optionally, the length of the connected pipe section is 2-3 times of the pipe wall thickness of the middle pipe section.

Optionally, the shell side inlet component includes first connecting pipe section and sets up first connecting pipe section circumference orientation's annular fixed part, be equipped with a plurality of along axial extension and towards the connecting rod of intermediate tube section place side on the annular fixed part, intermediate tube section's circumference is equipped with annular connecting portion, be equipped with a plurality of connecting holes on the annular connecting portion, a plurality of the connecting rod one-to-one wears to connect to a plurality of connecting holes and is locked fixedly by the bolt.

Optionally, the connecting pipe section connected with the shell side outlet component is provided with a plurality of first threaded holes arranged at intervals along the circumferential direction of the connecting pipe section, the end part of the middle pipe section is provided with a plurality of second threaded holes arranged at intervals along the circumferential direction of the middle pipe section, and the second threaded holes are in one-to-one correspondence with the first threaded holes for penetrating and fixing bolts.

Optionally, the heat exchanger further comprises a mounting plate arranged along an axial extension of the intermediate tube section, the intermediate tube section being lockingly secured to the mounting plate via a plurality of hoops.

Optionally, through holes are formed in the mounting plate for bolts to pass through and be fixed to external equipment.

Optionally, the mounting panel is close to one side of middle pipeline section is equipped with a plurality of interval arrangement's supporting seat, be equipped with the arc recess on the supporting seat in order to be used for with the surface of middle pipeline section is leaned on mutually, a plurality of staple bolts are locked and are fixed to a plurality of via the bolt one-to-one the supporting seat.

A second aspect of the present utility model provides a heat exchange system comprising:

the heat exchanger; and

a medium source configured to be capable of supplying a refrigerant or a heating medium and connected to the shell side inlet member through a medium input pipe and to the shell side outlet member through a medium output pipe.

According to the technical scheme provided by the utility model, the pipe diameter of the shell side outlet part is set smaller than that of the shell side inlet part, and when a certain flow of refrigerant or heating medium enters the middle pipe section from the shell side inlet part, the refrigerant or heating medium flows back at the joint of the middle pipe section and the shell side outlet part due to the smaller pipe diameter of the shell side outlet part, so that the refrigerant or heating medium generates mixed flow in the radial direction of the middle pipe section, the utilization efficiency of the refrigerant or heating medium is further improved, and the refrigerant or heating medium fully exchanges heat with the medium to be heat exchanged in the heat exchange pipe, so that the heat exchange efficiency is further improved.

Drawings

FIG. 1 is a schematic view of a heat exchanger according to the present utility model;

FIG. 2 is a schematic illustration of the connection of a shell side inlet member to an intermediate pipe section provided by the present utility model;

FIG. 3 is a schematic illustration of a shell side outlet member connected to a middle tube segment in accordance with the present utility model;

fig. 4 is a schematic structural view of a supporting seat and a hoop provided by the utility model;

fig. 5 is a schematic diagram of a heat exchange system provided by the present utility model.

Description of the reference numerals

100. A housing; 110. a middle pipe section; 111. an annular connecting part; 1111. a connection hole; 112. a second threaded hole; 120. a shell side inlet member; 121. a first connecting tube section; 122. an annular fixing part; 1221. a connecting rod; 130. a shell side outlet member; 131. a second connecting tube section; 132. an annular blocking part; 140. joining the pipe sections; 141. a first threaded hole; 200. a heat exchange tube; 300. a mounting plate; 310. a through hole; 320. a support base; 321. an arc-shaped groove; 400. a hoop; 500. a media source; 510. a medium input tube; 520. and a medium output pipe.

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

As described above, in connection with fig. 1, the first aspect of the present utility model provides a heat exchanger, which includes a housing 100 and a heat exchange tube 200 disposed in the housing 100, wherein the housing 100 includes a middle tube section 110, and a shell side inlet member 120 and a shell side outlet member 130 connected to both ends of the middle tube section 110, respectively, and the shell side outlet member 130 has a smaller tube diameter than the shell side inlet member 120.

In the present utility model, the lumen of the heat exchange tube 200 serves as a flow passage for one medium, and the gap between the housing 100 and the heat exchange tube 200 serves as a flow passage for another medium. The two media exchange heat by taking the pipe wall of the heat exchange pipe 200 as a heat exchange surface. In one application of the present utility model, the heat exchange tube 200 is used for transporting materials, and the gap between the housing 100 and the heat exchange tube 200 is used for transporting a refrigerant or a heating medium, so as to cool or heat the materials in the heat exchange tube 200.

In the present utility model, by setting the pipe diameter of the shell side outlet member 130 to be smaller than the pipe diameter of the shell side inlet member 120, when a certain flow of refrigerant or heating medium enters the middle pipe section 110 from the shell side inlet member 120, the refrigerant or heating medium flows back at the connection position between the middle pipe section 110 and the shell side outlet member 130 due to the smaller pipe diameter of the shell side outlet member 130, so that the refrigerant or heating medium generates mixed flow in the radial direction of the middle pipe section 110, thereby improving the utilization efficiency of the refrigerant or heating medium and fully exchanging heat with the medium to be heat exchanged in the heat exchange pipe 200; in addition, because the shell side outlet part 130 has a smaller pipe diameter, the pressure of the refrigerant or the heating medium flowing out of the heat exchanger is increased, the flow speed is increased, and the refrigerant or the heating medium after heat exchange is quickly led out of the middle pipe section 110 through the shell side outlet part 130.

Further, in the present utility model, when the ratio of the tube diameters of the shell side inlet part 120 and the shell side outlet part 130 is too small, the refrigerant or heat medium flowing through the middle tube section 110 flows out quickly, and sufficient heat exchange cannot be achieved, resulting in low heat exchange efficiency; when the ratio of the tube diameters of the shell side inlet part 120 and the shell side outlet part 130 is too large, the pressure of the refrigerant or the heat medium flowing out of the heat exchanger is large, and the refrigerant or the heat medium and the medium to be heat-exchanged in the heat exchange tube 200 can be ensured to perform sufficient heat exchange, but the requirement on equipment is high, so that the equipment cost is high. To this end, in some embodiments, the ratio of the tube diameters of the shell side inlet component 120 and the shell side outlet component 130 is 1:0.50-0.67.

In the present utility model, the shell side inlet member 120 and the shell side outlet member 130 are provided with a joint pipe section 140 at one end adjacent to the intermediate pipe section 110, the joint pipe section 140 is inserted into the pipe cavity of the intermediate pipe section 110 from the end thereof, and the outer wall of the joint pipe section 140 is closely attached to the inner wall of the intermediate pipe section 110. Through setting up and linking the pipeline section 140 to the outer wall of linking pipeline section 140 can hug closely the inner wall of middle pipeline section 110, has ensured the sealing performance of heat exchanger shell, prevents that shell side fluid from appearing revealing and leads to the problem that heat exchange efficiency is low.

Further, in the present utility model, in order to ensure a reliable sealing effect, the length of the connecting pipe section 140 is 2-3 times the thickness of the pipe wall of the middle pipe section 110.

In the present utility model, the shell side inlet member 120 and the shell side outlet member 130 may be connected to the ends of the middle tube section 110 in any suitable form by connecting the shell side inlet member 120 and the shell side outlet member 130 to both ends of the middle tube section 110 to form the outer shell 100.

In some embodiments, as shown in connection with fig. 2, the shell side inlet component 120 includes a first connecting pipe section 121 and an annular fixing portion 122 disposed on a circumferential direction of the first connecting pipe section 121, a plurality of connecting rods 1221 extending along an axial direction and facing to a side of the middle pipe section 110 are disposed on the annular fixing portion 122, an annular connecting portion 111 is disposed on a circumferential direction of the middle pipe section 110, a plurality of connecting holes 1111 are disposed on the annular connecting portion 111, and a plurality of connecting rods 1221 are threaded through the plurality of connecting holes 1111 in a one-to-one correspondence and are locked and fixed by bolts. In the process of installing the shell 100, the plurality of connecting rods 1221 on the annular fixing part 122 are aligned with the plurality of connecting holes 1111 on the annular connecting part 111 in a one-to-one correspondence manner, and after the engagement tube section 140 on the shell side inlet part 120 is completely inserted into the tube cavity of the middle tube section 110, the shell side inlet part 120 can be locked and fixed to the end of the middle tube section 110 by screwing bolts on the connecting rods 1221.

In some embodiments, as shown in fig. 3, the engagement pipe section 140 connected to the shell side outlet component 130 is provided with a plurality of first threaded holes 141 circumferentially spaced apart from each other, and the end of the intermediate pipe section 110 is provided with a plurality of second threaded holes 112 circumferentially spaced apart from each other, where the plurality of second threaded holes 112 are in one-to-one correspondence with the plurality of first threaded holes 141 for fastening by bolting. During installation to form the housing 100, the engagement tube segment 140 on the shell-side outlet member 130 is inserted directly into the lumen of the intermediate tube segment 110 such that the first threaded bore 141 on the engagement tube segment 140 is aligned with the second threaded bore 112 on the intermediate tube segment 110, and the shell-side outlet member 130 is lockingly secured to the end of the intermediate tube segment 110 by screwing in a bolt.

In some embodiments, the shell-side outlet member 130 includes a second connecting tube segment 131 and an annular abutment 132 disposed circumferentially about the second connecting tube segment 131, the annular abutment 132 being configured to abut against an end of the intermediate tube segment 110 when the engagement tube segment 140 on the shell-side outlet member 130 is inserted into position within the lumen of the intermediate tube segment 110. During assembly of the shell side outlet member 130, the engaged tube section 140 is pushed into the lumen of the intermediate tube section 110 until the annular abutment 132 forms an abutment stop with the end of the intermediate tube section 110, confirming that the engaged tube section 140 is inserted in place.

In the present utility model, the heat exchanger further includes a mounting plate 300 disposed along an axial extension of the intermediate pipe section 110, and the intermediate pipe section 110 is fastened to the mounting plate 300 via a plurality of anchor bolts 400. By providing the mounting plate 300, the disadvantage of inconvenient installation and fixation of the arcuate surface structure of the intermediate pipe segment 110 at different locations is overcome.

Further, in order to facilitate the fixing of the mounting plate 300, in some embodiments, through holes 310 are provided on the mounting plate 300 for the bolts to pass through and fix to external devices.

In some embodiments, as shown in fig. 4, a plurality of supporting seats 320 are disposed on a side of the mounting plate 300 adjacent to the middle pipe section 110 at intervals, arc-shaped grooves 321 are disposed on the supporting seats 320 for abutting against the outer surface of the middle pipe section 110, and the plurality of hoops 400 are fastened to the plurality of supporting seats 320 in a one-to-one correspondence manner via bolts. By providing the support base 320 with the arc-shaped groove 321, reliable bracing of the middle pipe section 110 is ensured, and reliable fixing of the middle pipe section 110 is realized by cooperation with clamping fixing of the anchor ear 400.

A second aspect of the present utility model provides a heat exchange system, as shown in connection with fig. 5, comprising the heat exchanger described above and a media source 500, the media source 500 being arranged to be able to supply a cooling or heating medium and being connected to the shell side inlet part 120 via a media input pipe 510 and to the shell side outlet part 130 via a media output pipe 520.

In actual use, if it is required to cool a certain flowing material a, the flowing material a is introduced into the heat exchange tube 200, then a refrigerant is introduced into the gap between the middle tube section 110 and the heat exchange tube 200 from the shell side inlet component 120 through the medium inlet tube 510, and after the refrigerant displaces the heat of the flowing material a in the heat exchange tube 200, the refrigerant flows out through the shell side outlet component 130 and flows back to the medium source 500 through the medium output tube 520.

If it is necessary to raise the temperature of a certain flowing material B, the flowing material B is introduced into the heat exchange tube 200, then a heat medium is introduced into the gap between the middle tube section 110 and the heat exchange tube 200 from the shell side inlet part 120 through the medium inlet tube 510, the heat medium transfers heat to the flowing material B in the heat exchange tube 200, and then flows out through the shell side outlet part 130, and then flows back to the medium source 500 through the medium outlet tube 520.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited thereto. Within the scope of the technical idea of the utility model, a plurality of simple variants can be made to the technical proposal of the utility model, and in order to avoid unnecessary repetition, the utility model does not need to be additionally described for various possible combinations. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.

Claims

1. The heat exchanger is characterized by comprising a shell (100) and a heat exchange tube (200) arranged in the shell (100), wherein the shell (100) comprises a middle tube section (110), and a shell side inlet part (120) and a shell side outlet part (130) which are respectively connected to two ends of the middle tube section (110), and the tube diameter of the shell side outlet part (130) is smaller than that of the shell side inlet part (120).

2. The heat exchanger according to claim 1, wherein the ratio of the tube diameters of the shell side inlet part (120) and the shell side outlet part (130) is 1:0.50-0.67.

3. The heat exchanger according to claim 1, wherein the shell side inlet part (120) and the shell side outlet part (130) are provided with a joint pipe section (140) adjacent to one end of the intermediate pipe section (110), the joint pipe section (140) is inserted into the pipe cavity of the intermediate pipe section (110) from the end thereof, and the outer wall of the joint pipe section (140) is abutted against the inner wall of the intermediate pipe section (110).

4. A heat exchanger according to claim 3, wherein the length of the joined tube sections (140) is 2-3 times the wall thickness of the intermediate tube sections (110).

5. A heat exchanger according to claim 3, wherein the shell side inlet member (120) comprises a first connecting tube section (121) and an annular fixing portion (122) arranged on the circumferential direction of the first connecting tube section (121), a plurality of connecting rods (1221) extending in the axial direction and facing the side of the intermediate tube section (110) are arranged on the annular fixing portion (122), an annular connecting portion (111) is arranged on the circumferential direction of the intermediate tube section (110), a plurality of connecting holes (1111) are arranged on the annular connecting portion (111), and a plurality of connecting rods (1221) are connected to the plurality of connecting holes (1111) in a penetrating and locking manner by bolts.

6. A heat exchanger according to claim 3, wherein the joint pipe section (140) connected to the shell side outlet member (130) is provided with a plurality of first screw holes (141) arranged at intervals along the circumferential direction thereof, the end of the intermediate pipe section (110) is provided with a plurality of second screw holes (112) arranged at intervals along the circumferential direction thereof, and the plurality of second screw holes (112) are in one-to-one correspondence with the plurality of first screw holes (141) for bolt penetration and fixation.

7. The heat exchanger according to any one of claims 1-6, further comprising a mounting plate (300) arranged along an axial extension of the intermediate tube section (110), the intermediate tube section (110) being lockingly secured to the mounting plate (300) via a plurality of hoops (400).

8. The heat exchanger according to claim 7, wherein the mounting plate (300) is provided with through holes (310) for bolts to pass through and be fixed to an external device.

9. The heat exchanger according to claim 7, wherein a plurality of supporting seats (320) are arranged at intervals on one side of the mounting plate (300) adjacent to the middle pipe section (110), arc-shaped grooves (321) are formed in the supporting seats (320) and are used for being abutted against the outer surface of the middle pipe section (110), and the plurality of hoops (400) are locked and fixed to the plurality of supporting seats (320) in a one-to-one correspondence manner through bolts.

10. A heat exchange system, comprising:

the heat exchanger of any one of claims 1-9; and

a media source (500), the media source (500) being arranged to be able to supply a cooling or heating medium and being connected to the shell side inlet part (120) by a media input pipe (510) and to the shell side outlet part (130) by a media output pipe (520).