A floating head heat exchanger

Abstract

The utility model belongs to heat exchanger technical field discloses a floating head type heat exchanger, including cylinder, inlet component, outlet pipe box, first lifting lug and second lifting lug, the both ends of cylinder are first flange and second flan, the bottom of inlet component sets up third flange, the top of outlet pipe box sets up fourth flange, first flange and third flange sealedly connect, second flange and fourth flange sealedly connect, first lifting lug sets up first fixed groove, and both sides side walls of first fixed groove are connected to first flange and third flange respectively, second lifting lug sets up second fixed groove, and both sides side walls of second fixed groove are connected to second flange and fourth flange respectively, when using lifting appliance hoist first lifting lug and second lifting lug, the same tension is borne to two flanges of mutual connection, avoids separating between two flanges of mutual connection because of the different external force that bears, guarantees the close connection between two flanges, thereby guarantees the sealing property of heat exchanger.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a floating head heat exchanger. Background Technology

[0002] A heat exchanger, also known as a heat exchanger, is an energy-saving device that facilitates heat transfer between two or more fluids at different temperatures, and is one of the main devices for improving energy efficiency. Floating head heat exchangers not only feature reliable operation, high efficiency and energy saving, and resistance to high temperatures and pressures, but also exhibit excellent performance under conditions where there is a large temperature difference between the shell and tube sides, and the shell or heat exchange tubes expand without generating thermal stress. They are suitable for applications with highly corrosive media and severe internal scaling.

[0003] Due to severe internal scaling, the tube bundle is prone to blockage, requiring regular cleaning during maintenance periods. Therefore, the inner head needs to be disassembled and inspected. During maintenance of the floating head heat exchanger, the floating head needs to be lifted and supported. When using the top lifting lugs to lift the heat exchanger from horizontal to vertical, uneven stress on the flange bolts may damage the flange sealing surface, leading to leakage after the equipment resumes operation.

[0004] Therefore, there is an urgent need for a floating head heat exchanger to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a floating head heat exchanger that can ensure the sealing of the flange connection during the lifting process.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A floating head heat exchanger is provided, comprising:

[0008] A cylindrical body, wherein a first flange is provided at the top of the cylindrical body and a second flange is provided at the bottom;

[0009] An inlet assembly, wherein a third flange is provided at the bottom end of the inlet assembly, and the third flange is sealed to the first flange;

[0010] An outlet pipe box, wherein a fourth flange is provided on the top of the outlet pipe box, and the fourth flange is sealed to the second flange;

[0011] The first lifting lug includes a first clamping part and a first lifting ring part. The first clamping part is provided with a first fixing groove. The first flange and the third flange are inserted into the first fixing groove. A plurality of the first lifting lugs are symmetrically connected to the first flange and the third flange.

[0012] The second lifting lug includes a second clamping part and a second lifting ring part. The second clamping part is provided with a second fixing groove. The second flange and the fourth flange are inserted into the second fixing groove and connected to the second clamping part.

[0013] As an alternative to the floating head heat exchanger, the first fixing groove is configured as an arc-shaped groove, and the radius of the first fixing groove matches the radius of the first flange and the third flange. Multiple first connecting holes are provided on the side walls on both sides of the first fixing groove, and first bolts are inserted through the first connecting holes, the first flange and the third flange and connected to the first nut.

[0014] As an alternative to the floating head heat exchanger, the second fixing groove is configured as an arc-shaped groove, and the radius of the second fixing groove matches the radius of the second flange and the fourth flange. Multiple second connecting holes are provided on the side walls on both sides of the second fixing groove, and second bolts are inserted through the second connecting holes, the second flange and the fourth flange and connected to the second nut.

[0015] As an alternative to the floating head heat exchanger, the floating head heat exchanger further includes a heat exchange assembly, which includes multiple heat exchange tubes disposed inside the cylinder. Both ends of all the heat exchange tubes are connected to the air inlet of the inlet assembly and the air outlet of the outlet pipe box, respectively.

[0016] As an alternative to the floating head heat exchanger, the heat exchange assembly further includes an expansion joint, which is disposed in the outlet pipe box and connects the heat exchange tube and the air outlet.

[0017] As an alternative to the floating head heat exchanger, the heat exchange assembly also includes an outlet tube sheet that connects all the heat exchange tubes and the expansion joint.

[0018] As an alternative to the floating head heat exchanger, a first inspection port is provided on the side wall of the cylinder.

[0019] As an alternative to a floating head heat exchanger, the shell includes a main body and a skirt, the skirt having a conical structure and being connected to the outside of the main body.

[0020] As an alternative to the floating head heat exchanger, the outlet tube box sidewall is provided with a second maintenance port.

[0021] As an alternative to the floating head heat exchanger, the inlet assembly has an exhaust port on its side wall.

[0022] The beneficial effects of this utility model are:

[0023] This utility model provides a floating head heat exchanger, including a shell, an inlet assembly, an outlet tube box, a first lifting lug, and a second lifting lug. A first flange and a second flange are respectively provided at both ends of the shell. A third flange is provided at the bottom of the inlet assembly, and a fourth flange is provided at the top of the outlet tube box. The first flange and the third flange are sealed together, as are the second flange and the fourth flange, ensuring the airtightness of the floating head heat exchanger. The first lifting lug has a first fixing groove, within which the first flange and the third flange are clamped, with the side walls of the first fixing groove connected to the first flange and the third flange, respectively. The second lifting lug has a second fixing groove, within which the second flange and the fourth flange are clamped, with the side walls of the second fixing groove connected to the second flange and the fourth flange, respectively. When the first and second lifting lugs are lifted using a lifting tool, the first flange and the third flange bear the same tensile force, and the second flange and the fourth flange bear the same tensile force, preventing separation between the two connected flanges due to different external forces, ensuring a tight connection between the two flanges, and thus guaranteeing the airtightness of the heat exchanger. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the floating head heat exchanger provided by this utility model;

[0025] Figure 2 This is a partial sectional view of the floating head heat exchanger provided by this utility model;

[0026] Figure 3 This is a schematic diagram of the installation of the first lifting lug and the inlet assembly of the floating head heat exchanger provided by this utility model;

[0027] Figure 4 This is a schematic diagram of the first lifting lug of the floating head heat exchanger provided by this utility model;

[0028] Figure 5 yes Figure 4 Cross-sectional view at point AA;

[0029] Figure 6 This is a schematic diagram of the second lifting lug of the floating head heat exchanger provided by this utility model;

[0030] Figure 7 yes Figure 6 Cross-sectional view at point BB.

[0031] In the picture:

[0032] 100. Shell; 110. First flange; 120. Second flange; 130. First inspection port; 140. Main body; 150. Skirt; 160. Liquid inlet; 170. Liquid outlet;

[0033] 200, Inlet assembly; 210, Third flange; 220, Air inlet; 230, Exhaust port; 240, Upper tube box; 241, Sixth flange; 250, Fixed tube sheet; 251, Fifth flange;

[0034] 300. Outlet pipe box; 310. Fourth flange; 320. Gas outlet; 330. Second inspection port; 340. Sewage outlet;

[0035] 400, First lifting lug; 410, First clamping part; 420, First lifting ring part; 430, First fixing groove; 431, First connecting hole;

[0036] 500, Second lifting lug; 510, Second clamping part; 520, Second lifting ring part; 530, Second fixing groove; 531, Second connecting hole;

[0037] 600. Heat exchanger assembly; 610. Heat exchanger tube; 620. Expansion joint; 630. Outlet tube sheet; 640. Flange. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0042] like Figures 1 to 7 As shown, the floating head heat exchanger of this embodiment includes a shell 100, an inlet assembly 200, and an outlet tube box 300. A first flange 110 is provided at the top of the shell 100, and a second flange 120 is provided at the bottom. The inlet assembly 200 is located above the shell 100, and a third flange 210 is provided at the bottom of the inlet assembly 200, which is sealed to the first flange 110. The outlet tube box 300 is located below the shell 100, and a fourth flange 310 is provided at the top of the outlet tube box 300, which is sealed to the second flange 120. The flange structure connects the inlet assembly 200, the shell 100, and the outlet tube box 300, facilitating disassembly and subsequent maintenance.

[0043] The floating head heat exchanger also includes a first lifting lug 400 and a second lifting lug 500. The first lifting lug 400 includes a first clamping part 410 and a first lifting ring part 420. The first clamping part 410 is provided with a first fixing groove 430. A first flange 110 and a third flange 210 are inserted into the first fixing groove 430. Multiple first lifting lugs 400 are symmetrically connected to the first flange 110 and the third flange 210. The second lifting lug 500 includes a second clamping part 510 and a second lifting ring part 520. The second clamping part 510 is provided with a second fixing groove 530. A second flange 120 and a fourth flange 310 are inserted into the second fixing groove 530 and connected to the second clamping part 510.

[0044] The first flange 110 and the third flange 210 are clamped in the first fixing groove 430, and the two side walls of the first fixing groove 430 are respectively connected to the first flange 110 and the third flange 210. The second flange 120 and the fourth flange 310 are clamped in the second fixing groove 530, and the two side walls of the second fixing groove 530 are respectively connected to the second flange 120 and the fourth flange 310. When the first lifting ring part 420 and the second lifting ring part 520 are lifted with a lifting tool, the first flange 110 and the third flange 210 bear the same tensile force, and the second flange 120 and the fourth flange 310 bear the same tensile force. This avoids the separation of the two flanges due to different external forces, ensures a tight connection between the two flanges, and thus ensures the sealing performance of the heat exchanger.

[0045] Understandably, multiple first lifting lugs 400 are symmetrically arranged circumferentially around the first flange 110 and the third flange 210 to ensure the stability of the heat exchanger during lifting. For example, two, three, or four first lifting lugs 400 can be provided. One or more second lifting lugs 500 can be provided to assist lifting, control the position of the bottom of the heat exchanger, and prevent swaying of the heat exchanger when gradually lifted to a vertical position. For example, when using one second lifting lug 500, the second lifting lug 500 is located in a different orientation circumferentially from the first lifting lug 400 of the heat exchanger.

[0046] In this embodiment, the first fixing groove 430 is configured as an arc-shaped groove, and the radius of the first fixing groove 430 matches the radius of the first flange 110 and the third flange 210. Multiple first connecting holes 431 are provided on the side walls on both sides of the first fixing groove 430. The first bolt passes through the first connecting hole 431, the first flange 110 and the third flange 210 and is connected to the first nut. The structure is simple and easy to disassemble and assemble. The first lifting lug 400, the first bolt and the first nut can be selected according to the different weight and size of the heat exchanger, which makes it easy to adjust the number of first lifting lugs 400 used. It can also be repeatedly applied to the lifting of multiple equipment of the same specifications, improving the practicality of the first lifting lug 400.

[0047] Similarly, the second fixing groove 530 is set as an arc-shaped groove, and the radius of the second fixing groove 530 matches the radius of the second flange 120 and the fourth flange 310. Multiple second connecting holes 531 are provided on the side walls of both sides of the second fixing groove 530. Second bolts pass through the second connecting holes 531, the second flange 120, and the fourth flange 310 to connect with the second nuts. The structure and use of the second lifting lug 500 can be referred to the first lifting lug 400, and will not be repeated here.

[0048] Furthermore, the inlet assembly 200 includes an upper tube box 240 and a fixed tube sheet 250. The fixed tube sheet 250 is provided with a third flange 210 and a fifth flange 251 at both ends, and the upper tube box 240 is provided with a sixth flange 241 and an air inlet 220 at both ends. The fifth flange 251 and the sixth flange 241 are connected by a third bolt and a third nut, which facilitates the disassembly of the upper tube box 240 and the fixed tube sheet 250.

[0049] Optionally, the inlet assembly 200 is provided with an exhaust port 230 on its side wall. In this embodiment, the exhaust port 230 is provided on the fixed tube sheet 250. The exhaust port 230 is used to discharge the gas inside the heat exchanger to prevent excessive internal gas pressure and ensure the safe use of the heat exchanger.

[0050] Furthermore, the side wall of the cylinder 100 is provided with an inlet 160 and an outlet 170. The inlet 160 is used to introduce refrigerant into the cylinder 100, and after sufficient heat exchange, the refrigerant flows out from the outlet 170, realizing the circulation of the refrigerant. Preferably, the inlet 160 is located at the bottom of the cylinder 100, and the outlet 170 is located at the top of the cylinder 100, ensuring that the refrigerant can be fully filled in the cylinder 100 and ensuring heat exchange efficiency.

[0051] Furthermore, a first inspection port 130 is provided on the side wall of the cylinder 100. Through the first inspection port 130, the coking situation inside the cylinder 100 can be observed in real time, which makes it easier to determine whether the heat exchanger needs to be cleaned and ensure the heat exchange efficiency of the heat exchanger.

[0052] Optionally, the cylinder 100 includes a main body 140 and a skirt 150. The skirt 150 has a conical structure and is connected around the outside of the main body 140, so that the skirt 150 can play a supporting role, ensuring that the main body is subjected to uniform force during lifting and preventing damage caused by uneven force on the main body 140.

[0053] Furthermore, a second inspection port 330 is provided on the side wall of the outlet pipe box 300, through which the internal condition of the outlet pipe box 300 can be inspected, facilitating regular cleaning. Optionally, a drain port 340 is also provided at the bottom of the side wall of the outlet pipe box 300, which is used to discharge waste materials from the outlet pipe box 300, enabling regular drainage and reducing the frequency of disassembly and cleaning.

[0054] Furthermore, the floating head heat exchanger also includes a heat exchange assembly 600, which comprises multiple heat exchange tubes 610 disposed within the shell 100. Both ends of each heat exchange tube 610 are connected to the inlet 220 of the inlet assembly 200 and the outlet 320 of the outlet pipe box 300, respectively. The gas to be cooled enters the heat exchange tubes 610 through the inlet 220, where it can fully exchange heat with the refrigerant within the shell 100, and then flows out through the outlet 320, thus achieving gas heat exchange.

[0055] Furthermore, the heat exchange assembly 600 also includes an expansion joint 620, which is disposed within the outlet pipe box 300 and connects the heat exchange tube 610 and the outlet port 320. When the temperature difference between the heat exchange tube 610 and the cylinder 100 is large, relative displacement occurs between the heat exchange tube 610 and the cylinder 100 due to thermal expansion and contraction. The expansion joint 620 can expand and contract within the outlet pipe box 300 to compensate for the displacement between the heat exchange tube 610 and the cylinder 100, thereby reducing thermal stress and extending service life. In this embodiment, the second inspection port 330 is used to inspect the surface coking condition of the expansion joint 620.

[0056] Furthermore, the heat exchange assembly 600 also includes an outlet tube sheet 630, which connects all the heat exchange tubes 610 and the expansion joint 620. Specifically, one end of the outlet tube sheet 630 covers the outlet of all the heat exchange tubes 610, and the other end is connected to the flange of the expansion joint 620, ensuring that the gas flowing out of the heat exchange tubes 610 can smoothly enter the expansion joint 620, preventing gas leakage, and facilitating disassembly and cleaning. In this embodiment, the first inspection port 130 is used to inspect the surface coking condition of the outlet tube sheet 630.

[0057] Furthermore, the heat exchange assembly 600 also includes a flange 640, one end of which is detachably connected to the outlet 320, and the other end is used to connect to external equipment. When it is necessary to disassemble the heat exchanger, the end of the flange 640 connected to the outlet 320 is disconnected, thereby enabling the connection between the external equipment and the outlet pipe box 300, facilitating the overall disassembly of the outlet pipe box 300 and the maintenance of the expansion joint 620.

[0058] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A floating head heat exchanger, characterized by, include: A cylindrical body (100) is provided with a first flange (110) at the top and a second flange (120) at the bottom; An inlet assembly (200) is provided with a third flange (210) at its bottom end, and the third flange (210) and the first flange (110) are sealed together. An outlet pipe box (300) is provided with a fourth flange (310) on the top of the outlet pipe box (300), and the fourth flange (310) is sealed to the second flange (120); The first lifting lug (400) includes a first clamping part (410) and a first lifting ring part (420). The first clamping part (410) is provided with a first fixing groove (430). The first flange (110) and the third flange (210) are inserted into the first fixing groove (430). A plurality of first lifting lugs (400) are symmetrically connected to the first flange (110) and the third flange (210). The second lifting lug (500) includes a second clamping part (510) and a second lifting ring part (520). The second clamping part (510) is provided with a second fixing groove (530). The second flange (120) and the fourth flange (310) are inserted into the second fixing groove (530) and connected to the second clamping part (510).

2. The floating head heat exchanger of claim 1, wherein, The first fixing groove (430) is configured as an arc-shaped groove, and the radius of the first fixing groove (430) matches the radius of the first flange (110) and the third flange (210). Multiple first connecting holes (431) are provided on the side walls on both sides of the first fixing groove (430). The first bolt passes through the first connecting hole (431), the first flange (110) and the third flange (210) and is connected to the first nut.

3. The floating head heat exchanger of claim 1, wherein, The second fixing groove (530) is configured as an arc-shaped groove. The radius of the second fixing groove (530) matches the radius of the second flange (120) and the fourth flange (310). Multiple second connecting holes (531) are provided on the side walls on both sides of the second fixing groove (530). The second bolt passes through the second connecting hole (531), the second flange (120) and the fourth flange (310) and is connected to the second nut.

4. The floating head heat exchanger of claim 1, wherein, The floating head heat exchanger also includes a heat exchange assembly (600), which includes a plurality of heat exchange tubes (610). The plurality of heat exchange tubes (610) are disposed inside the cylinder (100), and both ends of all the heat exchange tubes (610) are respectively connected to the air inlet (220) of the inlet assembly (200) and the air outlet (320) of the outlet pipe box (300).

5. The floating head heat exchanger according to claim 4, characterized in that, The heat exchange assembly (600) further includes an expansion joint (620), which is disposed in the outlet pipe box (300) and connects the heat exchange tube (610) and the air outlet (320).

6. The floating head heat exchanger according to claim 5, characterized in that, The heat exchange assembly (600) further includes an outlet tube sheet (630) that connects all the heat exchange tubes (610) and the expansion joint (620).

7. The floating head heat exchanger according to claim 1, characterized in that, The cylinder (100) has a first inspection port (130) on its side wall.

8. The floating head heat exchanger according to claim 1, characterized in that, The cylindrical body (100) includes a main body (140) and a skirt (150). The skirt (150) has a conical structure and is connected to the outside of the main body (140).

9. The floating head heat exchanger according to claim 1, characterized in that, The outlet pipe box (300) is provided with a second inspection port (330) on its side wall.

10. The floating head heat exchanger according to claim 1, characterized in that, The inlet assembly (200) has an exhaust port (230) on its side wall.

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