Silicon carbide two-in-one condenser

Abstract

The invention discloses a silicon carbide two-in-one condenser, and relates to the technical field of heat exchange, the silicon carbide two-in-one condenser comprises a condensation shell and two tube plates arranged at the two axial ends of the condensation shell, a plurality of condensation tubes are arranged between the two tube plates, a plurality of baffle plates are arranged in the condensation shell, each condensation tube penetrates through the plurality of baffle plates, and in the condensation operation stroke, the two tube plates are arranged in the condensation shell. A cooling medium flows in the condensation shell, a refrigerant flows through the condensation pipe and is converted into a liquid state from a gas state, the condensation shell is divided into a plurality of condensation sections by a plurality of pipe plates, and each condensation section is provided with a liquid inlet pipe for the cooling medium to enter and a liquid outlet pipe for the cooling medium to be discharged. And in the flowing direction of the refrigerant, the temperatures of the cooling media introduced into the condensation sections are sequentially reduced.

Description

Technical Field

[0001] The present invention relates to the technical field related to heat exchange, and in particular to a silicon carbide two-in-one condenser. Background Art

[0002] As is known to all, the main function of the condenser is to convert the refrigerant from a high-temperature and high-pressure gas into a liquid. In the refrigeration cycle, the refrigerant is compressed into a high-temperature and high-pressure gas under the action of the compressor. When these gases enter the condenser, they will exchange heat with the surrounding environment (air, water or other cooling media), releasing heat into the environment, thereby reducing the temperature of the refrigerant and liquefying it.

[0003] Among them, due to the properties of silicon carbide material such as high temperature resistance, super corrosion resistance, high thermal conductivity and thermal shock resistance, it is used as the core material of industrial heat exchange equipment, such as the patent with announcement number CN214470306U and announcement date October 22, 2021, named "A Silicon Carbide Condenser", which includes an outer shell, and the heat exchange tube bundle in the outer shell is a silicon carbide heat exchange tube bundle. A sealing ring structure is provided between the two ends of the silicon carbide heat exchange tube bundle and the tube sheet in the outer shell. The sealing ring structure includes a first sealing ring, a second sealing ring and a third sealing ring arranged in sequence. The first sealing ring and the third sealing ring are both perfluoroether sealing rings, and the second sealing ring is a flat gasket sealing ring. The tube sheet adopts glass fiber reinforced PTFE material; the silicon carbide condenser provided by this patent has a small size, good sealing effect, high heat transfer coefficient, high temperature resistance and corrosion resistance.

[0004] Among them, refrigerants are divided into single refrigerants and mixed refrigerants, and mixed refrigerants are divided into azeotropic mixed refrigerants and non-azeotropic mixed refrigerants. For non-azeotropic mixed refrigerants, when they are compressed into high-temperature and high-pressure gases under the action of a compressor, the gas belongs to a mixed gas, that is, different gases in the mixed gas require different temperatures for condensation. In the prior art, the condenser uses a cooling medium with basically the same condensation temperature for the condensation of the mixed gas, so that the gaseous refrigerant is condensed into a liquid. During this condensation process, the required heat transfer will increase, which has an adverse effect on saving energy and improving the condensation efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a silicon carbide two-in-one condenser to solve the technical problems in the related art. In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A silicon carbide two-in-one condenser comprises a condensing shell and two tube sheets arranged at both axial ends of the condensing shell, a plurality of condensing tubes are arranged between the two tube sheets, a plurality of baffles are arranged in the condensing shell, and each condensing tube passes through the plurality of baffles. During the condensing operation, a cooling medium flows in the condensing shell, and the refrigerant is converted from gas to liquid through the condensing tubes. The condensing shell is divided into a plurality of condensing sections by a plurality of tube sheets, and each condensing section is provided with a liquid inlet pipe for the cooling medium to enter and a liquid outlet pipe for the cooling medium to be discharged; along the flow direction of the refrigerant, the temperature of the cooling medium introduced into the plurality of condensing sections decreases successively.

[0007] As mentioned above, cleaning scrapers are arranged on both axial sides of each of the baffles, and a number of through holes are opened on the cleaning scrapers. Each condenser tube corresponds to a through hole for sliding insertion, and a driving mechanism is provided on the condenser shell; based on the driving action of the driving mechanism, the two cleaning scrapers on both axial sides of each baffle move relative to each other to scrape off the scale on the outer walls of the several condenser tubes.

[0008] As mentioned above, the through holes include a plurality of main holes corresponding to a plurality of condensing tubes one by one and slidably plugged therein, and a plurality of other auxiliary holes, wherein the auxiliary holes are for the cooling medium to pass through.

[0009] As mentioned above, the axial cross-sections of the multiple auxiliary holes uniformly arranged in the circumferential direction of each main hole are all arc-shaped. When the cooling medium flows through the auxiliary holes, the cooling medium impacts the corresponding outer wall of the condenser tube based on the guiding effect of the auxiliary holes.

[0010] As mentioned above, the driving mechanism includes two pairs of driving wheels rotatably mounted on the condensing shell, each pair of driving wheels has two in number and are symmetrically arranged near the axial ends of the condensing tube, and power is transmitted between each pair of driving wheels through a cable, and a plurality of blocks are fixedly connected to the cable, and the cleaning scraper is provided with a driving hole for connecting with the corresponding block, and a non-driving hole for the cable to pass through; during the cable movement stroke, the two cleaning scrapers corresponding to each deflector move relative to each other.

[0011] As mentioned above, dynamic seals are provided between the cables and the baffles and between the cables and the tube sheets.

[0012] As mentioned above, the cleaning scraper is provided with a main bag, and each of the plurality of auxiliary holes is provided with an auxiliary bag. The main bag and the auxiliary bag are connected. Based on the volume change of the main bag, the auxiliary bag controls the opening and closing degree of the corresponding auxiliary hole.

[0013] As described above, the radial size of the block gradually decreases along the direction of insertion with the corresponding driving hole. The main capsule is arranged in the driving hole, and the volume of the main capsule changes accordingly based on the depth of the block inserted into the corresponding driving hole.

[0014] As mentioned above, the main sac is annular in structure, and when the blocking block squeezes the main sac, it squeezes outward along the inner circle of the main sac.

[0015] As mentioned above, along the axial direction, a plurality of limiting surfaces and a plurality of extrusion surfaces are alternately arranged on the block; when the limiting surface contacts the main sac, the cleaning scraper is moved based on the friction between the limiting surface and the main sac; when the cleaning scraper cannot be driven to continue moving in a certain direction, based on the pulling action of the cable, the depth of the blocking block inserted into the corresponding driving hole is adjusted, and the main sac undergoes different volume changes based on the extrusion action of different extrusion surfaces.

[0016] The beneficial effect of the present invention is that by dividing the condensing shell into several condensing sections using multiple tube sheets, the temperature of the cooling medium introduced into the several condensing sections is reduced successively according to the flow direction of the refrigerant. For non-azeotropic mixed refrigerants, different gases in the refrigerant when in gaseous state can be condensed into liquid at different temperatures, that is, the non-azeotropic mixed refrigerant is subjected to graded condensation, which can reduce the heat transfer required in the condensation process and improve the condensation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a silicon carbide two-in-one condenser provided in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of a silicon carbide two-in-one condenser provided in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the axial cross-sectional structure of a silicon carbide two-in-one condenser provided in an embodiment of the present invention;

[0021] Figure 4 This is a schematic cross-sectional structural diagram of a cleaning scraper portion of a silicon carbide two-in-one condenser provided in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the main hole and the auxiliary holes in the circumferential direction of a silicon carbide two-in-one condenser provided in an embodiment of the present invention;

[0023] Figure 6 This is a schematic cross-sectional structure diagram of the coordination between the block and the main capsule of a silicon carbide two-in-one condenser provided in an embodiment of the present invention;

[0024] Figure 7 This is a schematic cross-sectional structural diagram of a silicon carbide two-in-one condenser provided in an embodiment of the present invention when the T-block has not entered the non-driving hole;

[0025] Figure 8 This is a schematic diagram of the cross-sectional structure of a T-block of a silicon carbide two-in-one condenser provided in an embodiment of the present invention when entering a non-driving hole.

[0026] Description of reference numerals:

[0027] 1. Condensation shell; 10. Tube sheet; 11. Condensation tube; 12. Baffle; 13. Liquid inlet pipe; 14. Liquid outlet pipe; 15. Exhaust pipe; 16. Drain pipe; 17. Inlet chamber; 18. Condensation chamber; 19. Discharge chamber; 2. Cleaning scraper; 20. Through hole; 200. Main hole; 201. Secondary hole; 21. Driving wheel; 22. Cable; 23. Block; 230. Limiting surface; 231. Extrusion surface; 24. Driving hole; 25. Non-driving hole; 26. Main bladder; 27. Secondary bladder; 3. Cleaning bottom plate; 30. T-block; 31. Locking rod; 32. Shrapnel; 33. Trigger block. DETAILED DESCRIPTION

[0028] In order to make those skilled in the art better understand the technical solution of the present invention, Figure 1 To the attached Figure 8 The present invention is further described in detail.

[0029] A first embodiment of the present invention provides a silicon carbide two-in-one condenser, comprising a condensing shell 1 and two tube sheets 10 arranged at both axial ends of the condensing shell 1, a plurality of condensing tubes 11 are arranged between the two tube sheets 10, a plurality of baffles 12 are arranged in the condensing shell 1, and each condensing tube 11 passes through the plurality of baffles 12. During the condensing operation, the cooling medium flows in the condensing shell 1, and the refrigerant is converted from gas to liquid through the condensing tubes 11. The condensing shell 1 is divided into a plurality of condensing sections by a plurality of tube sheets 10, and each condensing section is provided with a liquid inlet pipe 13 for the cooling medium to enter and a liquid outlet pipe 14 for the cooling medium to discharge; along the flow direction of the refrigerant, the temperature of the cooling medium introduced into the plurality of condensing sections decreases successively.

[0030] Specifically, the condensing shell 1 is a cylindrical structure as a whole. Along the refrigerant condensation flow direction, the interior of the condensing shell 1 is divided into an inlet chamber 17 for gaseous refrigerant, a condensing chamber 18 through which the cooling medium flows, and a discharge chamber 19 for liquid refrigerant by two tube sheets 10 at both ends of the axial direction. A number of condensing tubes 11 are arranged between the two tube sheets 10. One end of the condensing tube 11 is connected to the inlet chamber 17, and the other end is connected to the discharge chamber 19. The gaseous refrigerant flows into the condensing tube 11 from the inlet chamber 17, passes through the condensing chamber 18 through heat exchange and condenses into liquid, and then flows to the discharge chamber 19. A number of baffles 12 are also arranged in the condensing chamber 18. The baffles 12 are sealed from the inner wall of the condensing shell 1. Notches for the cooling medium to flow through are provided on the baffles 12. The two notches on two adjacent baffles 12 are arranged opposite to each other in the radial direction, that is, the cooling medium will reverse its flow direction multiple times when passing through a number of baffles 12. The prior art is used and will not be elaborated on here. An exhaust pipe 15 is arranged at the upper end of the condensing chamber 18 for discharging the gas in the condensing section, and a drain pipe 16 is arranged at the lower end for discharging the cooling medium remaining in the condensing section during the non-working period. However, in the prior art, the condensation of the gaseous refrigerant needs to be adjusted according to the situation of the refrigerant, that is, the refrigerant contains a non-azeotropic refrigerant, that is, the refrigerant is a mixed refrigerant, and the temperatures required for condensation of the multiple refrigerants mixed therein are also different. When the gaseous mixed refrigerant is condensed, there is basically a minimum condensation temperature directly, that is, in the mixed refrigerant, the condensation temperature of the refrigerant with the lowest condensation temperature is used as the standard. However, this will make the condensation temperature of some refrigerant components much higher than this temperature, which will consume a lot of unnecessary cooling capacity, and have an adverse effect on energy saving and improving condensation efficiency.

[0031] Based on the above problems, in this embodiment, graded condensation is performed according to the different temperatures required for condensation of components in the mixed refrigerant, that is, the temperature of the cooling medium is gradually reduced along the flow direction of the refrigerant during condensation, rather than being reduced to the lowest temperature at one time. In this way, the flow rate and temperature of the cooling medium can be reasonably distributed to optimize energy utilization efficiency. That is, in this embodiment, the condensation shell 1 is divided into several condensation sections using multiple tube plates 10. The structural configuration of each condensation section is basically the same, that is, it has a liquid inlet pipe 13 for the cooling medium to enter and a liquid outlet pipe 14 for the cooling medium to be discharged. A baffle 12 is also provided inside. However, the difference is that along the flow direction of the refrigerant condensation, the temperature of the cooling medium introduced into each condensation section is gradually reduced, so that the purpose of condensing the non-azeotropic mixed refrigerant from gas to liquid can be achieved.

[0032] The beneficial effect of this embodiment is that by dividing the condensing shell 1 into several condensing sections using multiple tube sheets 10, the temperature of the cooling medium introduced into the several condensing sections is reduced in sequence according to the flow direction of the refrigerant. For non-azeotropic mixed refrigerants, different gases in the refrigerant when in gaseous state can be condensed into liquid at different temperatures, that is, the non-azeotropic mixed refrigerant is subjected to graded condensation, which can reduce the heat transfer required in the condensation process and improve the condensation efficiency.

[0033] In the second embodiment of the present invention, cleaning scrapers 2 are arranged on both axial sides of each of the baffles 12, and a plurality of through holes 20 are opened on the cleaning scraper 2. Each condenser tube 11 is correspondingly slidably plugged into a through hole 20, and a driving mechanism is provided on the condensation shell 1; based on the driving action of the driving mechanism, the two cleaning scrapers 2 on both axial sides of each baffle 12 move relative to each other to scrape off the scale on the outer walls of the plurality of condenser tubes 11.

[0034] Specifically, in some condensers that use water as a cooling medium, the temperature of the water used will also change depending on the different condensation temperatures of the components in the non-azeotropic mixed refrigerant. However, the refrigerant is in a high-temperature state when entering the condenser tube 11. After heat exchange with water, scale in the water will adhere to the outer wall of the condenser tube 11. As the thickness of the scale gradually increases, it will have an adverse effect on the heat exchange efficiency.

[0035] Therefore, in this embodiment, cleaning scrapers 2 are arranged on both axial sides of each baffle 12, and a plurality of through holes 20 are opened on the cleaning scraper 2, and each condenser tube 11 is slidably plugged into the through hole 20 at the corresponding position, wherein the movement of the cleaning scraper 2 is realized by the driving force of the driving mechanism, that is, the cleaning scraper 2 is driven by the driving mechanism to move along the axial direction of the condensation shell 1, and the edge of the through hole 20 is used to scrape off the scale attached to the surface of the condenser tube 11. After the scale adheres to the outer wall of the condenser tube 11, its adhesion force is large and it is not easy to scrape off. Therefore, during the use of the condenser, the driving mechanism will drive the cleaning scraper 2 to be in motion all the time. The cleaning scraper 2 basically does not hinder the flow of the cooling medium. Therefore, the cleaning scraper 2 can be set to a structure in which the edge does not contact the inner wall of the condensing shell 1, or in an optional embodiment, the through hole 20 includes a plurality of main holes 200 corresponding to a plurality of condensing tubes 11 and slidably plugged in, and the remaining plurality of auxiliary holes 201, wherein the auxiliary holes 201 are for the cooling medium to pass through, so that the cooling medium can flow normally, and the scale attached to the outer wall of the condensing tube 11 can also be cleaned and removed in time.

[0036] Furthermore, when the cleaning scraper 2 with the through holes 20 on its surface moves in the condensation shell 1, it can also bring the following beneficial effects:

[0037] First, compared with the direct flow of the cooling medium in the condensing shell 1, the presence of the through holes 20 increases the turbulence of the cooling medium when it passes through the through holes 20, generating more eddies and mixing. The enhanced turbulence not only improves the heat exchange efficiency but also reduces the deposition of dirt on the surface of the heat exchange tube.

[0038] Secondly, the movement of the cleaning scraper 2 can effectively reduce the stagnant area of ​​the fluid in the condensation shell 1, and guide the fluid to pass through the heat exchange tube more evenly, thereby improving the heat exchange efficiency;

[0039] Third, when other media, such as air, are mixed into the cooling medium, bubbles will be formed in the cooling medium. The bubbles may also form air pockets when they gather, hindering heat transfer and causing insufficient heat exchange. The cleaning scraper 2 with through holes 20 can destroy the formation of bubbles during movement, making it easier for the air to be carried away by the cooling medium. The flow of air bubbles through the cooling mechanism of the through holes 20 can disperse the air bubbles into smaller bubbles, thereby reducing the adhesion of air to the surface of the heat exchange tube.

[0040] In order to improve the heat exchange efficiency, in a further embodiment, the axial cross-sections of the multiple secondary holes 201 uniformly arranged in the circumferential direction of each of the main holes 200 are all arc-shaped. When the cooling medium flows through the secondary holes 201, the cooling medium impacts the outer wall of the corresponding condenser tube 11 based on the guiding effect of the secondary holes 201.

[0041] Specifically, the center of the axial arc-shaped cross-section of the secondary hole 201 coincides with the axial midpoint of the corresponding main hole 200. During the movement of the cleaning scraper 2, the cooling medium flowing through the secondary hole 201 can be guided by the arc-shaped trajectory and can directly impact the outer wall of the condenser 11, thereby increasing the contact probability between the cooling medium and the condenser 11. The impact of the cooling medium on the outer wall of the condenser 11 can reduce the adhesion of scale.

[0042] Preferably, the driving mechanism includes two pairs of driving wheels 21 rotatably mounted on the condensing shell 1, each pair of driving wheels 21 is two in number and symmetrically arranged near the axial ends of the condensing tube 11, and power is transmitted between each pair of driving wheels 21 through a cable 22, and a plurality of blocks 23 are fixed to the cable 22, and the cleaning scraper 2 is provided with a driving hole 24 for plugging into the corresponding block 23, and a non-driving hole 25 for the cable 22 to pass through; during the movement stroke of the cable 22, the two cleaning scrapers 2 corresponding to each deflector 12 move relative to each other.

[0043] Specifically, each pair of driving wheels 21 cooperates with a cable 22 to form a structure similar to a belt conveyor mechanism, in which one driving wheel 21 is connected to the power output end of the driving source. The driving source can be a structure of a driving motor and a reducer. With the driving wheel 21 as the dividing point, each cable 22 can be divided into two parts. For the same cleaning scraper 2, a part of the cable 22 needs to be fixedly connected to the cleaning scraper 2, that is, it needs to drive the cleaning scraper 2 to move. A block 23 is provided on this part of the cable 22, and the block 23 is plugged into the driving hole 24 opened on the cleaning scraper 2. The other part is movably connected to the cleaning scraper 2, that is, it does not need to drive the cleaning scraper 2 to move. The non-driving hole 25 is opened on this part of the cable 22, and the block 23 does not need to be plugged into it. The two cleaning scrapers 2 corresponding to each deflector 12 are fixedly connected to the two parts of the cable 22 respectively. In this way, the two cleaning scrapers 2 can move relative to each other during the driven movement of the cable 22.

[0044] Preferably, dynamic seals are provided between the cable 22 and the baffle 12 and between the cable 22 and the tube sheet 10; specifically, the dynamic seals can prevent the cooling medium in different condensation sections from flowing into adjacent condensation sections. Dynamic seals are existing technologies and will not be described in detail.

[0045] In the third embodiment of the present invention, a main bag 26 is provided on the cleaning scraper 2, and a plurality of auxiliary holes 201 are each provided with an auxiliary bag 27. The main bag 26 and the auxiliary bag 27 are connected to each other. Based on the volume change of the main bag 26, the auxiliary bag 27 controls the opening and closing degree of the corresponding auxiliary hole 201.

[0046] Specifically, by controlling the volume change of the main sac 26, the volume of the remaining sub-sacs 27 can be driven to change synchronously, and the sub-sacs 27 are arranged in the sub-hole 201. When the volume of the sub-sac 27 changes, the opening and closing degree of the sub-hole 201 is affected. Therefore, the opening and closing degree of the sub-hole 201 can be dynamically adjusted according to the flow rate, temperature or pressure change of the cooling medium to achieve precise flow distribution, and the turbulent effect of the cooling medium can also be adjusted to further improve the heat exchange efficiency.

[0047] The control of the volume change of the main sac 26 can be achieved by setting a separate driving source, such as using a pump body to provide power for its volume change, or using the driving mechanism in the aforementioned embodiment, that is, the main sac 26 is set in the driving hole 24 on the cleaning scraper 2 at the corresponding position, and the radial size of the block 23 gradually decreases along the direction of insertion with the corresponding driving hole 24, so that the main sac 26 undergoes a corresponding volume change based on the depth of the block 23 inserted into the corresponding driving hole 24, and in a preferred embodiment, the main sac 26 is set in an annular structure, and when the block 23 squeezes the main sac 26, it squeezes outward along the inner circle of the main sac 26, so that the volume change of the main sac 26 is more uniform, which is more uniform and stable for controlling the volume change of the auxiliary sac 27.

[0048] Among them, in order to ensure that when the cable 22 moves, the block 23 is plugged into the corresponding drive hole 24, which can smoothly drive the cleaning scraper 2 to move. In an optional embodiment, along the axial direction, a plurality of limiting surfaces 230 and a plurality of extrusion surfaces 231 are alternately arranged on the block 23; when the limiting surface 230 contacts the main sac 26, the cleaning scraper 2 is moved based on the friction between the limiting surface 230 and the main sac 26; when the cleaning scraper 2 cannot be driven to continue moving in a certain direction, based on the pulling action of the cable 22, the depth of the block 23 inserted into the corresponding drive hole 24 is adjusted, and the main sac 26 undergoes different volume changes based on the extrusion action of different extrusion surfaces 231.

[0049] Specifically, when the cleaning scraper 2 moves axially along the condensation shell 1, when the cleaning scraper 2 moves toward the deflector 12 until it abuts against the deflector 12, the cleaning scraper 2 can no longer move in this direction. When the cleaning scraper 2 moves toward the end of the corresponding condensation section and abuts against it, the cleaning scraper 2 can no longer move in this direction. Therefore, utilizing this characteristic, a plurality of limiting surfaces 230 and a plurality of extrusion surfaces 231 are provided on the blocking block 23. The plurality of limiting surfaces 230 and the plurality of extrusion surfaces 231 are arranged alternately, and the limiting surfaces 230 are parallel to the extruded surface 231 of the main sac 26, and the extrusion surfaces 231 are wedge-shaped with the extruded surface 231 of the main sac 26 to realize an extrusion action. In this way, when the cleaning scraper 2 is driven and can no longer move in a certain direction, the cable 22 continues to move in this direction, which can drive the blocking block 23 to continue in the driving hole 24 corresponding to the depth, or move in the direction of leaving the driving hole 24, thereby realizing the control of the change in the volume of the main sac 26.

[0050] In the fourth embodiment of the present invention, there is a height difference between the liquid outlet pipe 14 and the bottom of the condensing section along the direction of refrigerant condensation flow, so part of the scale scraped off from the condensing tube 11 by the cleaning scraper 2 will be taken away with the flow of the cooling medium, and part of it will be deposited at the bottom of the condensing section. After a long period of accumulation, it will be difficult to clean and remove. Therefore, in this embodiment, a cleaning bottom plate 3 is also slidably provided in each condensing section, and only a hole for the condensing tube 11 to slide through is opened on the cleaning bottom plate 3, and a dynamic seal is provided between the hole wall and the outer wall of the condensing tube 11. The cleaning bottom plate 3 is located between the liquid outlet pipe 14 and the cooling medium. The bottom of the coagulation section is partially slidably arranged, and a T-shaped block 30 is installed on each position of the cleaning base plate 3 aligned with the two non-driving holes 25 on the cleaning scraper 2. Two locking rods 31 are slidably provided on the cleaning scraper 2 corresponding to the cleaning base plate 3. The two locking rods 31 correspond to the two non-driving holes 25 one by one, and a spring piece 32 is connected between the two locking rods 31. Based on the elastic force of the spring piece 32, the two locking rods 31 will not extend into a part of the corresponding non-driving holes 25. A trigger block 33 is also slidably provided on the cleaning scraper 2. The trigger block 33 abuts against the spring piece 32. When the trigger When the trigger block 33 squeezes the spring piece 32 and the spring piece 32 drives the two locking rods 31 to move away from each other, the locking rod 31 will extend into the corresponding non-driving hole 25. That is, when the T-block 30 is plugged into the aligned non-driving hole 25, the locking rod 31 can limit the position of the T-block 30, so that the cleaning base plate 3 will move with the cleaning scraper 2. However, it is necessary to clean the part of the base plate 3 between the liquid outlet pipe 14 and the bottom of the condensation section. Therefore, when the trigger block 33 is in a position aligned with the liquid outlet pipe 14, the inner wall of the condensation shell 1 will not squeeze the trigger block 33. 2, the trigger block 33 extends out of the cleaning scraper 2. Under the action of the elastic force, the two locking rods 31 will also approach each other and be pulled out from their corresponding non-driving holes 25. In this way, the position lock of the T-block 30 will also be released. In order to facilitate the cleaning bottom plate 3 to return to the bottom of the condensation section, a reset spring can be provided between the cleaning bottom plate 3 and the bottom of the condensation section. In this way, each time the cleaning scraper 2 moves in the direction close to the deflector 12, the cleaning bottom plate 3 is driven to move to the liquid outlet pipe 14, and the scale deposited on the cleaning bottom plate 3 is taken away by the flow of the cooling medium.

[0051] The above descriptions of certain exemplary embodiments of the present invention are provided by way of illustration only. It is understood that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the present invention.

Claims

1. A silicon carbide two-in-one condenser, comprising a condenser shell and two tube sheets disposed at both axial ends of the condenser shell, a plurality of condenser tubes disposed between the two tube sheets, a plurality of baffles disposed within the condenser shell, each condenser tube passing through the plurality of baffles, wherein during the condensation operation, the cooling medium flows within the condenser shell, and the refrigerant flows through the condenser tubes and is converted from a gaseous state to a liquid state, characterized in that: The condensing shell is divided into several condensing sections by multiple tube sheets, and each condensing section is provided with a liquid inlet pipe for the cooling medium to enter and a liquid outlet pipe for the cooling medium to discharge; Along the flow direction of the refrigerant, the temperature of the cooling medium introduced into the several condensation sections decreases successively.

2. The silicon carbide two-in-one condenser according to claim 1, characterized in that: Each baffle is provided with a cleaning scraper on both axial sides, and a plurality of through holes are opened on the cleaning scraper, and each condenser tube is correspondingly slidably plugged into a through hole, and a driving mechanism is provided on the condenser shell; Based on the driving action of the driving mechanism, the two cleaning scrapers on both sides of the axis of each baffle move relatively to scrape off the scale on the outer walls of the plurality of condensing tubes.

3. The silicon carbide two-in-one condenser according to claim 2, characterized in that: The through holes include a plurality of main holes corresponding to a plurality of condensing tubes one by one and slidably plugged in, and a plurality of other auxiliary holes, wherein the auxiliary holes are for cooling medium to pass through.

4. The silicon carbide two-in-one condenser according to claim 3, characterized in that: The axial cross-sections of the multiple auxiliary holes uniformly arranged in the circumferential direction of each main hole are all arc-shaped. When the cooling medium flows through the auxiliary holes, the cooling medium impacts the outer wall of the corresponding condenser tube based on the guiding effect of the auxiliary holes.

5. The silicon carbide two-in-one condenser according to claim 3, characterized in that: The driving mechanism includes two pairs of driving wheels rotatably mounted on the condensing shell, each pair of driving wheels has two in number and are symmetrically arranged near the axial ends of the condensing tube, and power is transmitted between each pair of driving wheels through a cable, and a plurality of blocks are fixedly connected to the cable, and the cleaning scraper is provided with a driving hole for connecting with the corresponding block, and a non-driving hole for the cable to pass through; during the cable movement stroke, the two cleaning scrapers corresponding to each deflector move relative to each other.

6. The silicon carbide two-in-one condenser according to claim 5, characterized in that: Dynamic seals are provided between the cables and the baffles and between the cables and the tube sheets.

7. The silicon carbide two-in-one condenser according to claim 5, characterized in that: The cleaning scraper is provided with a main bag body, and each of the plurality of auxiliary holes is provided with an auxiliary bag body. The main bag body and the auxiliary bag body are connected to each other. Based on the volume change of the main bag body, the auxiliary bag body controls the opening and closing degree of the corresponding auxiliary hole.

8. The silicon carbide two-in-one condenser according to claim 7, characterized in that: Along the direction of plugging with the corresponding driving hole, the radial size of the block gradually decreases. The main capsule is arranged in the driving hole, and the volume of the main capsule changes accordingly based on the depth of the block inserted into the corresponding driving hole.

9. The silicon carbide two-in-one condenser according to claim 8, characterized in that: The main sac is annular in structure, and when the blocking block squeezes the main sac, it squeezes outward along the inner circle of the main sac.

10. The silicon carbide two-in-one condenser according to claim 9, characterized in that: Along the axial direction, the blocking block is alternately provided with a plurality of limiting surfaces and a plurality of extrusion surfaces; When the limiting surface contacts the main bag body, the cleaning scraper is moved due to the friction between the limiting surface and the main bag body; When the cleaning scraper cannot be driven to continue moving in a certain direction, based on the pulling action of the cable, the depth of the blocking block inserted into the corresponding driving hole is adjusted, and the main bag body undergoes different volume changes based on the extrusion action of different extrusion surfaces.

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