Titanium tube heat exchanger

Abstract

The application relates to the technical field of heat exchangers, and particularly discloses a titanium tube heat exchanger, which comprises a shell, a tube box, a titanium heat pipe unit arranged in the shell and connected with the inside of the tube box, and a flow guide unit arranged in the shell; adjacent sector baffles in the flow guide unit are distributed in an axial direction, a spiral flow channel is formed around the titanium heat pipe unit under the rotary drive of a rotating frame, when cold flow flows from a cold flow input pipe to a cold flow output pipe, the cold flow flows along the spiral path, the spiral cold flow channel continuously and dynamically changes the contact area and path of the cold flow and the titanium heat pipe unit through the circumferential rotation and axial reciprocating translation of the superposed channel, the cold flow is forced to continuously sweep through different surface areas of the titanium heat pipe unit, the temperature boundary layer of the cold flow is effectively broken, the cold flow in different areas in the shell is fully mixed and replaced, heat exchange dead angles are effectively reduced, and the heat exchange efficiency between hot flow and cold flow is improved.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and more specifically, to a titanium tube heat exchanger. Background Technology

[0002] Titanium tube heat exchangers are widely used in industries such as chemical, power, and seawater desalination due to their excellent corrosion resistance. They mainly adopt a U-shaped tube structure, and the core component is titanium heat exchange tubes. Heat is conducted through the titanium tube walls to exchange heat between the tube-side and shell-side fluids.

[0003] The shell of existing titanium tube heat exchangers usually uses static baffles or fixed baffle structures. The heat exchange areas of cold flow and hot flow are relatively fixed. The cold and hot fluids flow through only a single static path, which can easily lead to stagnation of cold flow in some areas, forming heat exchange dead zones and reducing the overall heat exchange effect. Due to uneven flow field distribution, problems such as low-temperature condensation or excessive heat exchange may occur in some parts of the heat pipe, affecting the stable operation of the heat exchanger. Summary of the Invention

[0004] To overcome the above-mentioned technical problems, the present invention proposes a titanium tube heat exchanger.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A titanium tube heat exchanger, comprising:

[0007] The casing has a cold flow inlet pipe and a cold flow outlet pipe connected to its two end side walls, respectively.

[0008] The tube box is detachably connected to one end of the shell. A sealing plate is provided at the connection between the tube box and the shell. The upper and lower sides of the tube box are respectively connected to a heat flow input pipe and a heat flow output pipe.

[0009] The titanium heat pipe unit is housed within the casing and communicates with the interior of the tube box.

[0010] The flow guiding unit is disposed inside the housing and includes a rotating frame disposed at one end of the housing. Several telescopic columns are distributed circumferentially on the rotating frame, and several fan-shaped baffles are distributed equidistantly on the telescopic columns. Adjacent fan-shaped baffles are staggered sequentially along the axial direction.

[0011] As a further aspect of the present invention: the flow guiding unit further includes a first motor installed at one end of the housing, the output end of the first motor being connected to a drive shaft for driving the rotating frame; a plurality of limiting slide bars are axially arranged on the drive shaft, and the limiting slide bars are axially slidably connected to the rotating frame.

[0012] As a further embodiment of the present invention: a wave ring is provided on the rotating frame, and the wave ring has a plurality of recesses circumferentially open; a fixing ring is provided on the inner wall of the housing, and a plurality of top rods adapted to the wave ring are provided circumferentially on the fixing ring;

[0013] The telescopic column includes a sleeve rod fixed to a rotating frame, with a sliding rod movably embedded at the end of the sleeve rod away from the rotating frame, and a spring sleeved on the sliding rod; a rotating ring is rotatably installed on the sealing plate, and the end of the sliding rod away from the sleeve rod is fixed to the rotating ring.

[0014] As a further aspect of the present invention: the titanium heat pipe unit includes a mounting plate fixedly disposed within the housing, and a plurality of sets of first straight heat pipes and second straight heat pipes communicating with the inside of the pipe box are disposed on the mounting plate, and the first straight heat pipes and second straight heat pipes are connected to each other by an arc-shaped heat pipe.

[0015] The mounting plate is fixedly connected to the sealing plate at its center by several sets of top support rods, and the periphery of the mounting plate is fixedly connected to the sealing plate by several circumferentially distributed tie rods.

[0016] As a further aspect of the present invention: a volume adjustment unit is provided inside the tube box, which divides the tube box into an upper chamber and a lower chamber. The volume adjustment unit includes a fixed partition plate disposed on the sealing plate and a flip shaft rotatably mounted on one end of the fixed partition plate. A flip partition plate is disposed on the flip shaft. A second motor for driving the flip shaft is installed on the tube box. Temperature sensors for detecting the heat flow temperature in the upper chamber and the lower chamber are disposed on both sides of the fixed partition plate.

[0017] The volume adjustment unit also includes a controller, which controls the second motor to drive the flipping partition to flip based on the temperature difference detected by the temperature sensor, so as to adjust the volume difference between the upper chamber and the lower chamber.

[0018] As a further aspect of the present invention: an arc-shaped sealing strip is provided on the side of the flipping partition away from the flipping axis, which fits against the inner wall of the tube box, and arc-shaped scraper strips are symmetrically provided on both sides of the arc-shaped sealing strip.

[0019] As a further aspect of the present invention: a slot is provided in the fixed partition, and a sealed bag that abuts against the flipping shaft is embedded in the slot.

[0020] As a further aspect of the present invention: a sealed cavity is provided inside the tube box, a second magnetic rotor is installed at one end of the flipping shaft that extends into the sealed cavity, and a first magnetic rotor is installed at one end of the output shaft of the second motor that extends into the sealed cavity.

[0021] As a further aspect of the present invention: an air chamber communicating with the interior of the sealing cavity is axially opened inside the flipping shaft, an air passage is opened on one side of the sealing cavity, and an air chamber communicating with the air chamber and the arc-shaped sealing strip is opened inside the flipping partition.

[0022] As a further embodiment of the present invention: a wedge-shaped cavity is provided on one side of the sealing cavity, a wedge-shaped retaining ring is embedded in the wedge-shaped cavity, a wedge-shaped groove is provided on the flipping shaft, an inner sealing ring adapted to the wedge-shaped groove is provided on the inner side of the wedge-shaped retaining ring, and an outer sealing ring adapted to the wedge-shaped cavity is provided on the outer side of the wedge-shaped retaining ring.

[0023] The beneficial effects of this invention are:

[0024] In this invention, the rotating frame drives the circumferentially distributed fan-shaped baffles to rotate around the titanium heat pipe unit, while the telescopic column drives these baffles to perform axial reciprocating motion. This dual motion of circumferential rotation and axial reciprocating motion causes strong dynamic disturbance to the cold flow inside the shell, effectively enhancing the turbulence of the cold flow.

[0025] Adjacent sector-shaped baffles are staggered along the axial direction. Driven by the rotation of the rotating frame, a spiral flow channel is formed around the titanium heat pipe unit. When the cold flow flows from the cold flow inlet pipe to the cold flow outlet pipe, it flows along this spiral path. The spiral cold flow channel itself superimposed with the circumferential rotation and axial reciprocating translation of the channel continuously and dynamically changes the contact area and path between the cold flow and the titanium heat pipe unit, forcing the cold flow to continuously sweep across different surface areas of the titanium heat pipe unit.

[0026] The dynamic spiral channel effectively breaks the temperature boundary layer of the cold flow through its circumferential rotation superimposed with axial reciprocating motion, and promotes the full mixing and replacement of cold flow in different areas of the shell. This effectively reduces heat exchange dead zones and improves the overall heat exchange efficiency and uniformity between the heat flow in the titanium heat pipe unit and the cold flow in the shell. Attached Figure Description

[0027] The invention will now be further described with reference to the accompanying drawings.

[0028] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0029] Figure 2 This is a cross-sectional view of the present invention;

[0030] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0031] Figure 4 This is a three-dimensional schematic diagram of the flow guiding unit in this invention;

[0032] Figure 5 This is a cross-sectional view from another perspective of the present invention;

[0033] Figure 6 for Figure 5 Enlarged view at point B in the middle;

[0034] Figure 7 This is a schematic diagram of the titanium heat pipe unit in this invention;

[0035] Figure 8 This is a longitudinal sectional view of the pipe box in this invention;

[0036] Figure 9 for Figure 8 Enlarged view at point C;

[0037] Figure 10 for Figure 8 Enlarged view at point D;

[0038] Figure 11 This is a cross-sectional view of the pipe box in this invention;

[0039] Figure 12 for Figure 11 Enlarged view at point E in the middle;

[0040] Figure 13 for Figure 12 Enlarged view of point F in the middle.

[0041] In the picture:

[0042] 100. Housing; 110. Cold air inlet pipe; 120. Cold air outlet pipe;

[0043] 200. Tube box; 201. Sealed cavity; 202. Wedge-shaped cavity; 203. Air passage; 210. Heat inlet pipe; 220. Heat outlet pipe; 230. Upper chamber; 240. Lower chamber; 250. Sealing plate;

[0044] 300. Titanium heat pipe unit; 310. Pull rod; 320. Top support rod; 330. Mounting plate; 340. First straight section heat pipe; 350. Second straight section heat pipe; 360. Curved heat pipe;

[0045] 400. Flow guiding unit; 410. Rotating frame; 420. Telescopic column; 421. Sleeve rod; 422. Slide rod; 423. Spring; 430. First motor; 450. Fan-shaped baffle; 460. Rotating ring; 470. Wave ring; 471. Recessed part; 480. Fixed ring; 481. Top rod; 490. Drive shaft; 491. Limiting slide bar;

[0046] 500. Volume adjustment unit; 510. Fixed partition; 511. Slot; 512. Sealing bag; 520. Flip partition; 521. Air chamber; 530. Arc-shaped sealing strip; 540. Arc-shaped scraper; 550. Flip shaft; 551. Air cavity; 552. Second magnetic rotor; 553. Wedge groove; 560. Second motor; 561. First magnetic rotor; 570. Wedge-shaped retaining ring; 571. Inner sealing ring; 572. Outer sealing ring; 580. Temperature sensor. Detailed Implementation

[0047] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0048] Please see Figure 1 , Figure 2 and Figure 4 This invention discloses a titanium tube heat exchanger, comprising a shell 100, a tube box 200, a titanium heat pipe unit 300, and a flow guiding unit 400. The shell 100 has a cold flow inlet pipe 110 and a cold flow outlet pipe 120 respectively connected to its two end sidewalls. The tube box 200 is detachably connected to one end of the shell 100, and a sealing plate 250 is provided at the connection between the tube box 200 and the shell 100. A heat flow inlet pipe 210 and a heat flow outlet pipe 220 are respectively connected to the upper and lower sides of the tube box 200. The titanium heat pipe unit 300 is disposed within the shell 100 and communicates with the interior of the tube box 200. The flow guiding unit 400, disposed within the shell 100, includes a rotating frame 410 disposed at one end of the shell 100. The rotating frame 410 has several telescopic columns 420 distributed circumferentially, and several fan-shaped baffles 450 are equidistantly distributed on the telescopic columns 420, with adjacent fan-shaped baffles 450 staggered axially.

[0049] Specifically, the cold flow used for cooling and absorbing heat is introduced into the shell 100 through the cold flow inlet pipe 110, and the hot flow to be cooled and exchanged is introduced into the tube box 200 through the hot flow inlet pipe 210. The hot flow in the tube box 200 flows through the titanium heat pipe unit 300, through the shell 100, and then flows back into the tube box 200 and is discharged from the hot flow outlet pipe 220. During the flow of the hot flow in the titanium heat pipe unit 300, it exchanges heat with the cold flow filling the outside of the titanium heat pipe unit 300, thereby realizing heat exchange. The cold flow after absorbing heat is discharged from the cold flow outlet pipe 120 of the shell 100.

[0050] The rotating frame 410 installed inside the housing 100 can drive each set of fan-shaped baffles 450 to rotate circumferentially around the periphery of the titanium heat pipe unit 300. Simultaneously, due to the staggered distribution angles of adjacent fan-shaped baffles 450, a dynamic spiral cold flow channel is formed around the titanium heat pipe unit 300. As the cold flow travels from the cold flow inlet pipe 110 to the cold flow outlet pipe 120, it passes through the spiral cold flow channel formed by the fan-shaped baffles 450, thereby continuously changing the heat exchange zone between the cold flow and the titanium heat pipe unit 300. In addition, while the rotating frame 410 drives each set of fan-shaped baffles 450 to rotate circumferentially around the titanium heat pipe unit 300, the telescopic column 420 can also drive each set of fan-shaped baffles 450 to move axially back and forth, thereby realizing the axial reciprocating switching of the spiral cold flow channel. Through the dual dynamic switching of circumferential and axial directions, the cold flow and the heat flow in the titanium heat pipe unit 300 can be fully exchanged, and at the same time, the cold flow in the shell 100 is pushed circumferentially and axially, so that the heat conduction effect of the cold flow in different areas is more complete.

[0051] It should be noted that the rotating frame 410 drives the circumferentially distributed fan-shaped baffles 450 to rotate around the titanium heat pipe unit 300, while the telescopic column 420 drives these baffles to perform axial reciprocating motion. This dual motion of circumferential rotation and axial reciprocating motion causes strong dynamic disturbance to the cold flow inside the shell 100, effectively enhancing the turbulence of the cold flow.

[0052] Adjacent fan-shaped baffles 450 are staggered along the axial direction. Driven by the rotation of the rotating frame 410, they form a spiral flow channel around the titanium heat pipe unit 300. When the cold flow flows from the cold flow inlet pipe 110 to the cold flow outlet pipe 120, it flows along this spiral path. The spiral cold flow channel itself superimposed with the circumferential rotation and axial reciprocating translation of the channel continuously and dynamically changes the contact area and path between the cold flow and the titanium heat pipe unit 300, forcing the cold flow to continuously sweep across different surface areas of the titanium heat pipe unit 300.

[0053] The aforementioned dynamic spiral channel effectively breaks the temperature boundary layer of the cold flow through its circumferential rotation superimposed with axial reciprocating motion, and promotes the full mixing and replacement of cold flow in different areas within the shell 100. This effectively reduces heat exchange dead zones and improves the overall heat exchange efficiency and uniformity between the heat flow in the titanium heat pipe unit 300 and the cold flow in the shell 100.

[0054] In one embodiment, please refer to Figure 2 and Figure 3 The flow guiding unit 400 also includes a first motor 430 installed at one end of the housing 100, and the output end of the first motor 430 is connected to a drive shaft 490 for driving the rotating frame 410.

[0055] Specifically, the first motor 430 drives the drive shaft 490 to rotate, and the drive shaft 490 can always exert torque on the rotating frame 410, thereby driving the rotating frame 410 to rotate circumferentially, which in turn drives each set of fan-shaped baffles 450 to rotate circumferentially around the titanium heat pipe unit 300, so as to realize the circumferential dynamic switching of the spiral cold flow channel.

[0056] Further, please refer to Figure 2 , Figure 3 and Figure 4 In order to synchronously realize the axial reciprocating motion of each group of fan-shaped baffles 450, a wave ring 470 is provided on the rotating frame 410, and the wave ring 470 has several recesses 471 circumferentially opened; a fixing ring 480 is provided on the inner wall of the housing 100, and the fixing ring 480 has several push rods 481 adapted to the wave ring 470 circumferentially.

[0057] Specifically, when the first motor 430 drives the rotating frame 410 to rotate circumferentially via the drive shaft 490, the wave ring 470 also rotates synchronously. In the initial state, each set of push rods 481 is just embedded in the corresponding recess 471 of the wave ring 470. At this time, the rotating frame 410 is located on the side closer to the fixed ring 480. As the rotating frame 410 rotates at a certain angle, the recess 471 on the wave ring 470 begins to shift away from the corresponding push rod 481, thereby causing the push rod 481 to gradually move out of the corresponding recess 471. The push rod 481 can then be used to... The entire wave ring 470 is pushed out toward the side away from the fixed ring 480 to achieve axial displacement of the rotating frame 410, thereby driving each set of fan-shaped baffles 450 to achieve axial displacement relative to the titanium heat pipe unit 300; then the rotating frame 410 rotates again at a certain angle, the push rod 481 is inserted into the corresponding recess 471 again, and the rotating frame 410 gradually approaches the fixed ring 480, thereby driving each set of fan-shaped baffles 450 to axially displace and reset. By repeating this process, each set of fan-shaped baffles 450 can achieve circumferential rotation while performing axial reciprocating motion.

[0058] It should be noted that the first motor 430 drives the drive shaft 490, which simultaneously realizes the circumferential rotation of the rotating frame 410 (driving the fan-shaped baffle 450 to rotate around the titanium heat pipe unit 300) and the axial reciprocating motion (driving the fan-shaped baffle 450 to move along the axial direction of the titanium heat pipe unit 300).

[0059] When the rotating frame 410 is driven to rotate by the first motor 430, the push rod 481 engages and disengages periodically with the recess 471 of the wave ring 470. When the push rod 481 is inserted into the recess 471, the rotating frame 410 is located at the axial proximal end (close to the fixed ring 480). When the push rod 481 slides out of the recess 471, it pushes the wave ring 470 and the rotating frame 410 towards the axial distal end. Through the periodic engagement and disengagement cycle, the rotational motion is automatically converted into a precise and synchronized axial reciprocating motion. This ensures that during the continuous circumferential rotation of the rotating frame 410, a regular axial reciprocating displacement is simultaneously superimposed, so that all the fan-shaped baffles 450 installed on the rotating frame 410 simultaneously perform circumferential rotation and axial reciprocating motion, thereby efficiently driving the dynamic spiral cold flow channel to perform circumferential sweeping and axial pulsation.

[0060] Furthermore, please refer to Figure 4 , Figure 5 and Figure 6 The telescopic column 420 includes a sleeve rod 421 fixed on the rotating frame 410. A sliding rod 422 is movably embedded at one end of the sleeve rod 421 away from the rotating frame 410. A spring 423 is sleeved on the sliding rod 422.

[0061] A rotating ring 460 is rotatably mounted on the sealing plate 250, and the end of the slide rod 422 away from the sleeve rod 421 is fixed to the rotating ring 460;

[0062] Specifically, the telescopic column 420 is supported and fixed at both ends by the rotating ring 460 and the rotating frame 410. Under the elastic force of the spring 423, the sleeve rod 421 pushes the rotating frame 410 to move towards the fixed ring 480 side, so that the wave ring 470 is always in close contact with the top rod 481.

[0063] When the push rod 481 moves out of the recess 471, it can push the wave ring 470 and the rotating frame 410 axially away from the fixed ring 480, while the slide rod 422 retracts into the sleeve rod 421 and the spring 423 is compressed. When the push rod 481 moves into the recess 471, under the elastic force of the spring 423, it can push the sleeve rod 421 and the rotating frame 410 axially closer to the fixed ring 480. By repeating this process, the axial reciprocating motion of each set of fan-shaped baffles 450 can be achieved through the combined action of the push rod 481 and the spring 423.

[0064] It is worth noting that the spring 423 is pre-compressed between the sleeve rod 421 and the slide rod 422, providing a continuous axial elastic preload, so that the rotating frame 410 is always pushed towards the fixed ring 480, ensuring that the wave ring 470 and the push rod 481 maintain reliable contact; when the push rod 481 slides out of the recess 471 and pushes the rotating frame 410 axially away, the spring 423 is compressed to absorb the impact; when the push rod 481 slides into the recess 471, the spring 423 automatically releases its elastic force to push the rotating frame 410 to reset, effectively buffering mechanical impact and realizing adaptive and smooth switching of the motion process;

[0065] The end of the slide rod 422 is fixed to the swivel ring 460 on the sealing plate 250. The swivel ring 460 allows the slide rod 422 to rotate circumferentially with the rotating frame 410, while constraining the slide rod 422 to slide only axially. This completely decouples the circumferential rotational degree of freedom when the telescopic column 420 transmits axial reciprocating motion, avoids motion interference, and ensures that the composite motion trajectory of the fan-shaped baffle plate 450 is precise and controllable.

[0066] The preload of spring 423 is the core power source for the axial reset of rotating frame 410. When push rod 481 slides into the recess 471 of wave ring 470, the elastic force of spring 423 actively and quickly pushes rotating frame 410 back to the near-end initial position, and ensures that it is synchronized with the rotation phase of wave ring 470. This ensures that the fan-shaped baffles 450 on all telescopic columns 420 keep pace in axial displacement, and avoids deformation and distortion of cold flow channel due to delay.

[0067] Spring 423 is compressed when push rod 481 pushes away from wave ring 470, reducing the instantaneous stress generated by hard collision between push rod 481 and wave ring 470, reducing wear on contact surface. At the same time, elastic reset reduces the impact load on the structure of fixed ring 480 and push rod 481, extending the service life of key components of flow guiding unit 400.

[0068] In addition, considering that there is also axial displacement between the rotating frame 410 and the drive shaft 490 when the rotating frame 410 moves back and forth axially, a number of limiting slide bars 491 are axially provided on the drive shaft 490, and the limiting slide bars 491 are axially slidably connected to the rotating frame 410.

[0069] Specifically, the limiting slide bar 491 can limit the rotating frame 410, so that the rotating frame 410 can only slide axially relative to the drive shaft 490, but cannot rotate relative to the drive shaft 490. This ensures that the drive shaft 490 can provide circumferential torque to the rotating frame 410 to drive the rotating frame 410 to rotate circumferentially, while ensuring that the reciprocating axial movement of the rotating frame 410 is unrestricted.

[0070] It should be noted that the limiting slide bar 491 extends axially along the drive shaft 490 and forms a sliding keyway with the rotating frame 410, which strictly constrains the circumferential relative rotation of the rotating frame 410 and the drive shaft 490, ensuring that the rotational torque of the drive shaft 490 can be directly transmitted to the rotating frame 410, while allowing the rotating frame 410 to slide freely axially along the limiting slide bar 491 to realize axial displacement transmission.

[0071] By eliminating the circumferential relative rotational degree of freedom, the circumferential rotational motion of the rotating frame 410 is ensured to be completely driven by the first motor 430; while the axial sliding degree of freedom ensures that the axial reciprocating motion triggered by the interaction between the wave ring 470 and the push rod 481 is not disturbed by the rotational attitude of the drive shaft 490. The two motions do not interfere with each other in terms of mechanical structure and work together efficiently.

[0072] Multiple limiting slide bars 491 are evenly distributed circumferentially on the drive shaft 490, forming a high-rigidity anti-torsion structure, which effectively suppresses the circumferential sway or vibration that may occur in the rotating frame 410 under torque load, ensures the stability of the rotation trajectory of the fan-shaped baffle 450, and avoids the distortion of the dynamic spiral cold flow channel due to frame shaking.

[0073] In yet another embodiment, please refer to Figure 2 and Figure 7 The titanium heat pipe unit 300 includes a mounting plate 330 fixedly disposed inside the housing 100. Several sets of first straight heat pipes 340 and second straight heat pipes 350 communicating with the inside of the pipe box 200 are mounted on the mounting plate 330. The first straight heat pipes 340 and the second straight heat pipes 350 are connected by an arc-shaped heat pipe 360.

[0074] Specifically, after the heat flow enters the tube box 200 through the heat flow inlet pipe 210, it flows into the first straight heat pipe 340, and then flows into the second straight heat pipe 350 through the arc heat pipe 360. During the process of flowing through the first straight heat pipe 340, the arc heat pipe 360 ​​and the second straight heat pipe 350, the heat flow exchanges heat fully with the cold flow in the shell 100, and then flows back into the tube box 200, and finally flows out from the heat flow outlet pipe 220.

[0075] The heat flow path is tube box 200, first straight heat pipe 340, arc heat pipe 360, second straight heat pipe 350 and tube box 200, thus forming a U-shaped double-pass flow in a limited space, so that a single heat pipe unit has both an inflow section and a return section, doubling the effective heat exchange length and increasing the residence time of heat flow in the shell 100.

[0076] The first straight heat pipe 340 and the second straight heat pipe 350 are installed in parallel on the mounting plate 330 to form a regular tube bundle, maximizing the exposed tube wall surface area, and are highly matched with the dynamic spiral cold flow channel generated by the flow guiding unit 400, so that the cold flow can fully flush the straight pipe section along the axial / circumferential direction and eliminate the heat exchange dead zone.

[0077] The first straight heat pipe 340, the second straight heat pipe 350, and the arc-shaped heat pipe 360 ​​are pre-installed on the mounting plate 330, which facilitates overall disassembly and maintenance. The arc-shaped heat pipe 360 ​​is located at the end of the housing 100 to avoid interference with the internal moving parts of the flow guiding unit 400.

[0078] Further, please refer to Figure 7 The mounting plate 330 is fixedly connected to the sealing plate 250 at its center by a number of sets of top support rods 320, and the periphery of the mounting plate 330 is fixedly connected to the sealing plate 250 by a number of circumferentially distributed tie rods 310.

[0079] The mounting plate 330 supports and fixes the first straight heat pipe 340 and the second straight heat pipe 350 of each group, thereby fixing the entire titanium heat pipe unit 300 on the sealing plate 250. The mounting plate 330 is fixed by the supporting action of the central top support rod 320 and the pulling action of the outer pull rod 310, thereby preventing the center of gravity of the first straight heat pipe 340 and the second straight heat pipe 350 installed on the mounting plate 330 from shifting downward and tilting.

[0080] It should be noted that the centrally distributed top support rod 320 provides axial support force, while the peripherally distributed pull rod 310 applies reverse pull force, forming a two-way mechanical constraint, which effectively resists the gravitational interference of the first straight heat pipe 340, the second straight heat pipe 350 and the arc-shaped heat pipe 360, preventing the mounting plate 330 and the heat pipe assembly it carries from sinking or tilting, and ensuring the spatial positioning accuracy of the heat pipe.

[0081] The tension rod 310 is evenly distributed around the periphery of the mounting plate 330, so that the tension force is evenly applied to the edge of the mounting plate 330, avoiding local stress concentration, preventing the mounting plate 330 from warping due to uneven force, and ensuring the parallelism between the first straight heat pipe 340 and the second straight heat pipe 350 and the alignment with the arc-shaped heat pipe 360.

[0082] The top support rod 320 and the pull rod 310 together rigidly anchor the mounting plate 330 to the sealing plate 250, forming a highly stable modular heat pipe core. This not only provides reliable support but also facilitates the rapid maintenance or replacement of the titanium heat pipe unit 300 as a whole by disassembling the sealing plate 250.

[0083] Under the condition that the cold flow is violently disturbed by the flow guiding unit 400, the synergistic effect of the top support rod 320 and the pull rod 310 ensures that the first straight section heat pipe 340 and the second straight section heat pipe 350 always maintain the preset spatial posture, so that the relative position relationship between the dynamic spiral cold flow channel generated by the fan-shaped baffle 450 and the surface of the heat pipe remains precise and controllable, and the scouring heat exchange effect is optimized.

[0084] In further embodiments, please refer to Figure 8 and Figure 11 The tube box 200 is provided with a volume adjustment unit 500, which divides the tube box 200 into an upper chamber 230 and a lower chamber 240. The volume adjustment unit 500 includes a fixed partition 510 disposed on the sealing plate 250 and a flip shaft 550 rotatably mounted on one end of the fixed partition 510. A flip partition 520 is disposed on the flip shaft 550. A second motor 560 for driving the flip shaft 550 is installed on the tube box 200. Temperature sensors 580 for detecting the heat flow temperature in the upper chamber 230 and the lower chamber 240 are disposed on both sides of the fixed partition 510.

[0085] The volume adjustment unit 500 also includes a controller, which controls the second motor 560 to drive the flipping partition 520 to flip based on the temperature difference detected by the temperature sensor 580, so as to adjust the volume difference between the upper chamber 230 and the lower chamber 240.

[0086] Specifically, the temperature sensor 580 detects the heat flow temperature difference ΔT between the upper chamber 230 and the lower chamber 240 in real time (where ΔT = T1 - T2, T1 is the detected temperature of the upper chamber 230, and T2 is the detected temperature of the lower chamber 240).

[0087] When ΔT is within the set range (e.g., 20℃-35℃), the controller maintains the flip partition 520 horizontal (equilibrium state) and keeps the upper chamber 230 and lower chamber 240 equal in volume;

[0088] When ΔT exceeds the upper limit threshold (e.g., 45℃), it indicates that the heat flow temperature in the upper chamber 230 is significantly higher than that in the lower chamber 240 (i.e., the heat flow is excessively heat-exchanged in the titanium heat pipe unit 300). The controller controls the second motor 560 to drive the flipping partition 520 to flip upward, expanding the volume of the lower chamber 240, so that the return heat flow is fully mixed in the lower chamber 240 before being output, enhancing the mixing of the outlet cold flow and avoiding local low-temperature condensation of the heat pipe.

[0089] When ΔT is lower than the lower threshold (e.g., 10℃), it indicates that the heat exchange in the upstream first straight section heat pipe 340 is insufficient (possibly due to uneven cold flow distribution). The controller controls the second motor 560 to drive the flipping partition 520 to flip downward, expanding the volume of the upper chamber 230, allowing the upper chamber 230 to accommodate more heat flow, prolonging the residence time of the heat flow before entering the first straight section heat pipe 340, enhancing the pre-cooling of the inlet heat flow, and compensating for insufficient heat exchange upstream.

[0090] It should be noted that, in this embodiment, based on the real-time temperature difference between the upper chamber 230 and the lower chamber 240, the directional flipping of the flipping partition 520 is automatically triggered to achieve dynamic optimization of volume distribution. When flipping downwards, the volume of the upper chamber 230 is increased, improving the heat exchange effect upstream of the heat flow and strengthening the heat exchange at the inlet of the first straight section heat pipe 340. When flipping upwards, the volume of the lower chamber 240 is increased, enhancing the mixing and temperature uniformity downstream of the heat flow. By differentially controlling the residence time of the upper chamber 230 and the lower chamber 240, the heat exchange intensity at the beginning and end of the titanium heat pipe unit 300 is forcibly balanced, avoiding localized low heat exchange efficiency due to uneven flow field distribution.

[0091] Further, please refer to Figure 8 and Figure 9 The flip-up partition 520 is provided with an arc-shaped sealing bladder strip 530 that fits against the inner wall of the tube box 200 on the side away from the flip-up shaft 550, and arc-shaped scraper strips 540 are symmetrically arranged on both sides of the arc-shaped sealing bladder strip 530.

[0092] Specifically, the arc-shaped sealing strip 530 seals the gap between the flip-over partition 520 and the inner wall of the tube box 200, thereby preventing crossflow between the upper chamber 230 and the lower chamber 240; the arc-shaped scraper strips 540 provided on both sides can provide secondary sealing for the flip-over partition 520, and at the same time, when the flip-over partition 520 flips, it can scrape off the heat flow residue adhering to the inner wall of the tube box 200.

[0093] It should be noted that the arc-shaped sealing strip 530 remains in close contact with the inner wall of the tube box 200 as the flip-over partition 520 moves. It uses elastic deformation to compensate for manufacturing tolerances and thermal deformation, thereby sealing the crossflow channel between the upper chamber 230 and the lower chamber 240 and preventing high-temperature heat flow from directly penetrating into the low-temperature zone. The arc-shaped sealing strip 530 can be made of silicone or fluororubber, which can withstand a high temperature of 150℃ and a pressure difference of 0.6MPa, ensuring sealing reliability under extreme working conditions.

[0094] The arc-shaped scraper 540 is symmetrically distributed on both sides of the arc-shaped sealing bladder 530, forming a triple sealing defense. When the flip-over partition 520 is activated, the arc-shaped scraper 540 radially scrapes the inner wall of the tube box 200 to remove viscous residues (such as oil / polymers), preventing heat transfer attenuation caused by scaling. The beveled design guides the scraped material to the bottom of the chamber, preventing debris from getting stuck in the sealing interface. The arc-shaped scraper 540 preferentially scrapes away hard particles, protecting the arc-shaped sealing bladder 530 from wear and failure, and extending the life of the seal.

[0095] Similarly, please see Figure 8 and Figure 10 The fixed partition 510 has a slot 511, and a sealed bag 512 that abuts against the flip shaft 550 is embedded in the slot 511.

[0096] When the flipping shaft 550 rotates relative to the fixed partition 510, the sealing bag 512 can seal the gap between the fixed partition 510 and the flipping shaft 550, preventing the heat flow between the upper chamber 230 and the lower chamber 240 from flowing across.

[0097] Further, please refer to Figure 11 and Figure 12 The tube box 200 has a sealed cavity 201. The end of the flipping shaft 550 that extends into the sealed cavity 201 is equipped with a second magnetic rotor 552. The output shaft of the second motor 560 that extends into the sealed cavity 201 is equipped with a first magnetic rotor 561.

[0098] Specifically, the second motor 560 and the flip shaft 550 are connected by torque transmission through the first magnetic rotor 561 and the second magnetic rotor 552 to avoid rigid transmission, while isolating the inside and outside of the tube box 200 to prevent heat leakage.

[0099] The second motor 560 is physically isolated from the heat flow inside the tube box 200 by the sealing cavity 201. Combined with the non-contact magnetic coupling transmission between the first magnetic rotor 561 and the second magnetic rotor 552, the risk of dynamic seal leakage at the through-hole of the rotating shaft is completely eliminated, and the sealing requirements of high-risk media (such as corrosive / toxic heat flow) are met.

[0100] The sealing cavity 201 can be filled with inert gas and has a pressure resistance of up to 2.5MPa, which is far greater than that of traditional mechanical seals. The sealing cavity 201 isolates particulate matter / viscous matter in the heat flow and prevents impurities from entering the magnetic rotor gap and causing transmission instability. The first magnetic rotor 561 and the second magnetic rotor 552 can be made of samarium cobalt permanent magnet + titanium alloy coating, which can withstand acid / alkaline heat flow corrosion inside the tube box 200.

[0101] Furthermore, please refer to Figures 8 to 12 The flipping shaft 550 has an axially formed air chamber 551 that communicates with the interior of the sealing cavity 201. An air passage 203 is formed on one side of the sealing cavity 201. The flipping partition 520 has an air chamber 521 that communicates with the air chamber 551 and the arc-shaped sealing strip 530.

[0102] Specifically, high-pressure protective gas is injected into the sealing cavity 201 through the gas source connected to the air passage 203. The gas can not only maintain the high-pressure seal of the inner wall of the sealing cavity 201, but also enter the arc-shaped sealing bladder 530 through the air chamber 551 and the air chamber 521, thereby causing the arc-shaped sealing bladder 530 to expand, improving the tightness of the contact between the arc-shaped sealing bladder 530 and the inner wall of the tube box 200, and improving the sealing performance between the flip partition 520 and the tube box 200.

[0103] Additionally, please see Figure 12 and Figure 13The sealing cavity 201 has a wedge-shaped cavity 202 on one side, and a wedge-shaped retaining ring 570 is embedded in the wedge-shaped cavity 202. The flipping shaft 550 has a wedge-shaped groove 553. The inner side of the wedge-shaped retaining ring 570 is provided with an inner sealing ring 571 that matches the wedge-shaped groove 553, and the outer side of the wedge-shaped retaining ring 570 is provided with an outer sealing ring 572 that matches the wedge-shaped cavity 202.

[0104] Specifically, when high-pressure protective gas is injected into the sealing cavity 201 through the air passage 203, the high pressure can drive the wedge-shaped retaining ring 570 to move away from the sealing cavity 201, thereby causing the wedge-shaped retaining ring 570 to squeeze against the inner wall of the wedge cavity 202, causing the outer sealing ring 572 to come into close contact with the inner wall of the wedge cavity 202, while the inner sealing ring 571 comes into close contact with the inner wall of the wedge groove 553, so as to improve the sealing performance at the rotating connection between the flip shaft 550 and the tube box 200 and prevent the heat flow inside the tube box 200 from leaking into the sealing cavity 201;

[0105] When the sealing cavity 201 is filled with high-pressure gas (0.4–0.8 MPa), the gas pressure pushes the wedge-shaped retaining ring 570 to move axially. The wedge-shaped inclined surface forces the outer sealing ring 572 to expand radially and press against the inner wall of the wedge-shaped cavity 202. At the same time, the inner sealing ring 571 radially presses against the wedge groove 553 of the flip shaft 550, forming a double dynamic sealing interface, blocking the path of heat flow leakage from the flip shaft 550 to the sealing cavity 201.

[0106] The specific embodiments of the present invention have been described above. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention, all of which are within the protection scope of the present invention.

Claims

1. A titanium tube heat exchanger, characterized in that, include: The housing (100) has a cold flow inlet pipe (110) and a cold flow outlet pipe (120) respectively connected to its two end side walls. The tube box (200) is detachably connected to one end of the shell (100). A sealing plate (250) is provided at the connection between the tube box (200) and the shell (100). The upper and lower sides of the tube box (200) are respectively connected to a heat flow input pipe (210) and a heat flow output pipe (220). A titanium heat pipe unit (300) is disposed inside the housing (100) and communicates with the interior of the tube box (200); The flow guiding unit (400) is disposed inside the housing (100) and includes a rotating frame (410) disposed at one end of the housing (100). The rotating frame (410) has a plurality of telescopic columns (420) distributed circumferentially. The telescopic columns (420) have a plurality of fan-shaped baffles (450) distributed at equal intervals. Adjacent fan-shaped baffles (450) are staggered in sequence along the axial direction. The telescopic columns (420) drive the fan-shaped baffles (450) to move axially back and forth. The flow guiding unit (400) further includes a first motor (430) installed at one end of the housing (100), the output end of the first motor (430) is connected to a drive shaft (490) for driving the rotating frame (410); a plurality of limiting slides (491) are axially arranged on the drive shaft (490), and the limiting slides (491) are axially slidably connected to the rotating frame (410).

2. The titanium tube heat exchanger according to claim 1, characterized in that, The rotating frame (410) is provided with a wave ring (470), and the wave ring (470) has a plurality of recesses (471) circumferentially open; the inner wall of the housing (100) is provided with a fixing ring (480), and the fixing ring (480) has a plurality of top rods (481) adapted to the wave ring (470) circumferentially open. The telescopic column (420) includes a sleeve rod (421) fixed on the rotating frame (410), and a slide rod (422) is movably embedded at the end of the sleeve rod (421) away from the rotating frame (410). A spring (423) is sleeved on the slide rod (422). A rotating ring (460) is rotatably installed on the sealing plate (250), and the end of the slide rod (422) away from the sleeve rod (421) is fixed on the rotating ring (460).

3. A titanium tube heat exchanger according to claim 1, characterized in that, The titanium heat pipe unit (300) includes a mounting plate (330) fixedly disposed inside the housing (100). Several sets of first straight heat pipes (340) and second straight heat pipes (350) communicating with the inside of the pipe box (200) are installed on the mounting plate (330). The first straight heat pipes (340) and the second straight heat pipes (350) are connected by an arc-shaped heat pipe (360). The mounting plate (330) is fixedly connected to the sealing plate (250) at its center by a number of top support rods (320), and the periphery of the mounting plate (330) is fixedly connected to the sealing plate (250) by a number of circumferentially distributed tie rods (310).

4. A titanium tube heat exchanger according to claim 1, characterized in that, The tube box (200) is provided with a volume adjustment unit (500), which divides the tube box (200) into an upper chamber (230) and a lower chamber (240). The volume adjustment unit (500) includes a fixed partition (510) disposed on the sealing plate (250) and a flip shaft (550) rotatably mounted on one end of the fixed partition (510). A flip partition (520) is disposed on the flip shaft (550). A second motor (560) for driving the flip shaft (550) is installed on the tube box (200). Temperature sensors (580) for detecting the heat flow temperature in the upper chamber (230) and the lower chamber (240) are disposed on both sides of the fixed partition (510). The volume adjustment unit (500) also includes a controller, which controls the second motor (560) to drive the flipping partition (520) to flip based on the temperature difference detected by the temperature sensor (580) so as to adjust the volume difference between the upper chamber (230) and the lower chamber (240).

5. A titanium tube heat exchanger according to claim 4, characterized in that, The flip-up partition (520) has an arc-shaped sealing strip (530) on the side away from the flip-up shaft (550) that fits against the inner wall of the tube box (200), and arc-shaped scraper strips (540) are symmetrically arranged on both sides of the arc-shaped sealing strip (530).

6. A titanium tube heat exchanger according to claim 4, characterized in that, The fixed partition (510) has a slot (511) inside, and a sealed bag (512) that abuts against the flip shaft (550) is embedded in the slot (511).

7. A titanium tube heat exchanger according to claim 5, characterized in that, The tube box (200) has a sealed cavity (201) inside. A second magnetic rotor (552) is installed at one end of the flipping shaft (550) that extends into the sealed cavity (201), and a first magnetic rotor (561) is installed at one end of the output shaft of the second motor (560) that extends into the sealed cavity (201).

8. A titanium tube heat exchanger according to claim 7, characterized in that, The flipping shaft (550) has an axially formed air chamber (551) that communicates with the interior of the sealing cavity (201). An air passage (203) is formed on one side of the sealing cavity (201). The flipping partition (520) has an air chamber (521) that communicates with the air chamber (551) and the arc-shaped sealing bladder strip (530).

9. A titanium tube heat exchanger according to claim 7, characterized in that, A wedge-shaped cavity (202) is provided on one side of the sealing cavity (201). A wedge-shaped retaining ring (570) is embedded in the wedge-shaped cavity (202). A wedge-shaped groove (553) is provided on the flip shaft (550). An inner sealing ring (571) that matches the wedge-shaped groove (553) is provided on the inner side of the wedge-shaped retaining ring (570). An outer sealing ring (572) that matches the wedge-shaped cavity (202) is provided on the outer side of the wedge-shaped retaining ring (570).

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