Tubular condenser

Abstract

The invention relates to the technical field of condensation refrigeration, in particular to a shell and tube condenser which comprises a shell component, an inlet pipe eccentrically arranged above one end of the shell and an outlet pipe installed below the other end of the shell. The pipe body part is installed in the shell body part and comprises a rotating disc arranged at one end of the shell, a plurality of U-shaped condensation pipes are annularly arranged on the rotating disc at equal intervals, detachable first blades are arranged at the U-shaped ends of the condensation pipes and located under the inlet pipe, and second blades are arranged at inlets of the condensation pipes. Through the inlet pipe which is eccentrically arranged and used for guiding in steam, directional impact on the first blade is achieved, the U-shaped condensation pipe fixed to the first blade is driven to drive the rotary disc to rotate, and the problem that a fixed condensation pipe is prone to being damaged due to local overheating is ingeniously solved. The design ensures that each condenser pipe is impacted by steam in turn, heat load is uniformly distributed, and the service life of the condenser pipe is obviously prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of condensation refrigeration, and in particular to a shell-and-tube condenser. Background Art

[0002] In the prior art, shell-and-tube condensers, as a commonly used heat energy conversion device, play a vital role, especially in industrial cooling systems, where they effectively convert steam or gaseous media into liquid state to achieve energy recovery and recycling. The core structure of this type of equipment usually involves a middle shell (shell), a tube sheet that carries and isolates the tube bundle, and a top closure assembly (top cover), wherein the tube bundle assembly is fixedly arranged in the shell, and the tubes and tube sheets are tightly combined to ensure the sealing and stability of the fluid channel. During the condensation process, the cooling medium (typically water) circulates in the tube (i.e., the tube side), while the steam or gas to be condensed moves in the opposite direction in the external shell (shell side), and heat is transferred through the tube wall to achieve efficient heat exchange.

[0003] However, there are obvious limitations in the design of traditional shell-and-tube condensers, especially the problem of fixed condenser tube layout. This design causes the condenser tubes directly below the steam inlet tube to be subjected to continuous and concentrated heat load shocks. Compared with condenser tubes in other parts, this part is prone to premature aging, thermal fatigue and even damage due to long-term exposure to extreme heat flow conditions, which greatly shortens the overall service life of the condenser and increases maintenance costs. This problem not only affects the reliability and economy of the equipment, but is also one of the important factors restricting the improvement of heat exchange efficiency. Summary of the invention

[0004] In view of the above problems existing in the existing shell and tube condenser, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a shell-and-tube condenser, the purpose of which is to improve the heat flow distribution through innovative structural layout and mechanism, effectively alleviate the problem of local thermal stress concentration, extend the service life of the condenser tube, and at the same time improve the heat exchange efficiency to meet the growing needs of industrial cooling and energy conservation and emission reduction.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: A shell-and-tube condenser comprises a shell component, including a shell, an inlet pipe eccentrically arranged above one end of the shell, and an outlet pipe installed below the other end of the shell; The tube body component is installed in the shell component, and includes a turntable arranged at one end of the outer shell, on which a plurality of U-shaped condensing tubes are arranged in a circular shape with equal intervals. A detachable first blade is provided at the U-shaped end of the condensing tube and is located directly below the inlet pipe, and a second blade is provided at the inlet of each of the condensing tubes.

[0007] As a preferred solution of the shell-and-tube condenser described in the present invention, each of the first blades is fan-shaped, and each of the first blades is arranged in a semicircular arc shape and gradually becomes thinner along the flow direction of the hot steam.

[0008] As a preferred solution of the shell-and-tube condenser described in the present invention, the first blade includes a first long mounting plate, and a first plate arranged at one end of the first mounting plate, two first opening grooves are arranged on the side of the first mounting plate, the first opening grooves are clamped in the condenser tube, and a rotatable first baffle is arranged at the center of the side of the first mounting plate, and the first baffle is used to seal the two first opening grooves.

[0009] As a preferred solution of the shell-and-tube condenser of the present invention, a first cover shell and a second cover shell are rotatably arranged on the outer wall of the turntable, the first cover shell and the second cover shell are concentrically arranged, and the second cover shell is located on the outside of the first cover shell.

[0010] As a preferred solution of the shell-and-tube condenser of the present invention, the inlet of each condenser tube is located in the first housing, and the outlet of each condenser tube is located in the second housing.

[0011] As a preferred solution of the shell-and-tube condenser described in the present invention, the first cover shell is fixed to the second cover shell, the second cover shell is fixed to one end of the outer shell, the end face of the first cover shell is provided with an injection port, and the lower side wall of the second cover shell is provided with an outflow port.

[0012] As a preferred solution of the shell-and-tube condenser of the present invention, the inner diameter of the U-shaped condenser tube gradually decreases at its U-shaped end, while the outer diameter remains unchanged.

[0013] As a preferred solution of the shell-and-tube condenser described in the present invention, each of the second blades is fan-shaped and inclined along the direction of cold water flow, the second blades include an arc-shaped second mounting plate, second plates are arranged on both side surfaces of the second mounting plate, two second opening grooves are arranged on both end sides of the second mounting plate, the second opening grooves are clamped in the two adjacent condenser tube inlet sections, and a slidable second baffle is arranged at each end of the inner wall of the second mounting plate, and the second baffle is used to seal the second opening groove.

[0014] As a preferred solution of the shell-and-tube condenser of the present invention, a plurality of partitions are arranged inside the shell, the partitions are symmetrically distributed inside the shell, and the partitions on each side are divided into a first partition, a second partition and a central partition.

[0015] As a preferred solution of the shell-and-tube condenser described in the present invention, wherein: the first partition is arranged in a ring shape, the inner wall of which is clamped on the outer tube of the U-shaped condenser tube, and the outer wall is provided with balls, which roll in the grooves opened on the inner wall of the outer shell; the second partition is arranged in a ring shape, and is located between the inner tube and the outer tube of the U-shaped condenser tube; the central partition is arranged in a disc shape, and the outer wall is clamped on the inner tube of the U-shaped condenser tube.

[0016] Beneficial effects of the present invention: This application achieves directional impact on the first blade through an eccentrically arranged inlet pipe for introducing steam, drives the U-shaped condenser fixed to the first blade to drive the turntable to rotate, and cleverly solves the problem that the fixed condenser is prone to local overheating and damage. This design ensures that each condenser is subjected to steam impact in turn, evenly distributes the heat load, and significantly extends the service life of the condenser. In addition, the second blade design integrated at the condenser inlet not only accelerates the flow of cold water as the condenser rotates, but also through the unique U-shaped tube diameter change design - the diameter of the U-shaped section is reduced and the two ends are enlarged, combined with the centrifugal force effect generated by the rotation, it further accelerates the water flow rate and improves the heat exchange efficiency. It is particularly worth mentioning that this becomes a thickening treatment of the U-shaped section, which enhances the ability to resist thermal shock, effectively protects against mechanical stress damage during rapid heat exchange, and comprehensively achieves the dual optimization of heat exchange efficiency and equipment durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the shell and tube condenser of the present invention.

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the shell and tube condenser of the present invention.

[0020] Figure 3 It is a schematic diagram of the structure of the tube body components of the shell and tube condenser of the present invention.

[0021] Figure 4 It is a schematic diagram of the partition distribution structure of the shell and tube condenser of the present invention.

[0022] Figure 5 It is a schematic diagram of the first blade structure of the shell and tube condenser of the present invention.

[0023] Figure 6 It is a schematic diagram of the second blade structure of the shell and tube condenser of the present invention.

[0024] In the figure: 100, shell component; 101, shell; 102, inlet pipe; 103, outlet pipe; 104, partition; 104a, first partition; 104b, second partition; 104c, center partition; 200, tube body component; 201, turntable; 202, condenser; 203, first blade; 203a, first mounting plate; 203b, first sheet; 203c, first opening groove; 203d, first baffle; 204, second blade; 204a, second mounting plate; 204b, second sheet; 204c, second opening groove; 204d, second baffle; 205, first cover shell; 205a, injection port; 206, second cover shell; 206a, outflow port. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] Example 1 Reference Figure 1-3, which is the first embodiment of the present invention, provides a shell and tube condenser, including a shell component 100, including an outer shell 101, an inlet pipe 102 eccentrically arranged above one end of the outer shell 101, and an outlet pipe 103 installed below the other end of the outer shell 101; a tube body component 200, which is installed in the shell component 100, and includes a turntable 201 arranged at one end of the outer shell 101, and a plurality of U-shaped condensing tubes 202 are arranged on the turntable 201 at equal intervals in a ring, and a detachable first blade 203 is provided at the U-shaped end of the condensing tube 202 and is located directly below the inlet pipe 102, and a second blade 204 is provided at the inlet of each condensing tube 202.

[0030] This application aims to significantly improve heat exchange efficiency, extend equipment life, and optimize fluid flow characteristics through a unique mechanical linkage mechanism. The core lies in the combination of an eccentric steam inlet structure and a dynamic blade drive system. The specific improvement measures and beneficial effects are summarized as follows: Eccentric steam inlet design: By using an eccentrically set inlet pipe 102 to introduce hot steam into the shell 101, it directly impacts the first blade group located directly below it. This design changes the incident angle of the steam, effectively disperses the direct impact force of the steam on the condenser 202, and avoids the early damage of the single condenser 202 in the fixed design due to continuous heating.

[0031] Blade-driven condenser 202 rotation mechanism: Under the impact of steam, each first blade 203 drives the U-shaped condenser 202 fixedly connected thereto to make a circular rotation, so that all the condenser tubes 202 rotate. During the rotation, the condenser tubes 202 are alternately located under the steam inlet, which evenly distributes the heat load, significantly extends the overall service life of the condenser tubes 202, and promotes the uniformity of heat exchange.

[0032] The second blades 204 accelerate the cooling water circulation: a second blade 204 is added at the entrance of each condenser 202. As the condenser 202 rotates, the second blades 204 rotate in the first cover 205, accelerating the cooling water, thereby enhancing the efficiency of cold water entering the condenser 202 and further accelerating the heat exchange process. This design not only accelerates the flow of cooling water, but also improves the overall heat exchange efficiency.

[0033] Optimize the structure of the condenser 202: The condenser 202 is designed with a U-shaped portion having a smaller diameter and larger diameters at both ends. This structure further accelerates the internal water flow under the centrifugal force generated by the rotation. At the same time, the thickening of the U-shaped portion enhances the heat resistance and mechanical strength of the tube wall, effectively resisting the thermal shock of high-temperature steam and improving the durability of the condenser 202.

[0034] Summary of beneficial effects: (1) Extended service life: By rotating and distributing steam shock, excessive heating of a single condenser tube 202 is avoided, significantly improving the overall durability of the equipment. (2) Improved heat exchange efficiency: The dynamic blade system and the condenser tube 202 rotation design, as well as the cooling water acceleration mechanism, work together to increase the heat exchange rate, shorten the condensation time, and save energy. (3) Enhanced fluid dynamic characteristics: The carefully designed blade layout and condenser tube 202 structure optimize fluid flow, reduce flow resistance, increase fluid turbulence, and further promote heat and mass transfer. (4) Structural innovation: The eccentric steam inlet and blade-driven rotation design of the present invention represents a new mechanical solution that does not require a complex intelligent control system, simplifies operation and maintenance, facilitates the modification of existing equipment, and reduces operating costs.

[0035] In summary, the present invention not only solves the life problem caused by local overheating of the condenser tube 202 in the traditional shell-and-tube condenser through a series of innovative mechanical designs, but also significantly improves the heat exchange efficiency. It is a major technological innovation in the field of shell-and-tube condensers.

[0036] Example 2 Reference Figure 1-5 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that each first blade 203 is fan-shaped, and each first blade 203 is set in a semicircular arc shape, and gradually becomes thinner along the flow direction of the hot steam. The first blade 203 includes a long first mounting plate 203a, and a first plate 203b arranged at one end of the first mounting plate 203a, and two first opening grooves 203c are arranged on the side of the first mounting plate 203a, and the first opening grooves 203c are clamped to the condenser 202, and a rotatable first baffle 203d is arranged at the center of the side of the first mounting plate 203a, and the first baffle 203d is used to block the two first opening grooves 203c.

[0037] Design of the first blade 203: (1) Structural features: Each first blade 203 is designed to be semicircular, forming a fan-like layout, and the blade gradually becomes thinner along the steam flow direction. This design not only facilitates the steam to drive the blade to rotate, but also effectively guides the steam flow direction and accelerates its flow.

[0038] (2) Installation mechanism: The first blade 203 is composed of a long first mounting plate 203a and a first plate 203b at one end. The side of the mounting plate is provided with two first opening grooves 203c for precise clamping on the straight pipe section of the U-shaped condenser 202. A rotatable first baffle 203d is also provided on the first mounting plate 203a. When the first baffle 203d is rotated into place, its two ends span the two first opening grooves 203c, thereby firmly fixing the first blade 203 on the condenser 202, thereby ensuring the ease and stability of installation.

[0039] A plurality of partitions 104 are arranged inside the housing 101. The partitions 104 are symmetrically distributed inside the housing 101, and the partitions 104 on each side are divided into a first partition 104a, a second partition 104b, and a central partition 104c. The first partition 104a is arranged in an annular shape, and its inner wall is clamped on the outer tube of the U-shaped condenser tube 202. The outer wall is provided with a ball rolling in a groove opened on the inner wall of the housing 101; the second partition 104b is arranged in an annular shape and is located between the inner tube and the outer tube of the U-shaped condenser tube 202; the central partition 104c is arranged in a disc shape, and its outer wall is clamped on the inner tube of the U-shaped condenser tube 202.

[0040] Design of the partition plate 104 in the shell: (1) Layout of partitions 104: Multiple groups of partitions 104 are symmetrically distributed inside the shell 101. These partitions 104 are divided into three categories: first partitions 104a, second partitions 104b and central partitions 104c. They work together to optimize the flow path of steam and support and limit the U-shaped condenser 202.

[0041] (2) Functional description: The first partition 104a is annular, with a slot on the inner side and stuck on the outer tube of the U-shaped condenser 202. The outer side is embedded in the groove of the inner wall of the shell 101 and equipped with a ball to reduce friction, which supports the condenser 202 and cooperates with the rotation of the condenser 202. The second partition 104b is also annular, but is located between the inner and outer tubes of the U-shaped condenser 202. It participates in guiding and dividing the steam flow direction, and limits each U-shaped condenser 202 to prevent it from being deflected by the impact of steam. The central partition 104c is designed to be disc-shaped, with a slot on the outer edge and fixed on the inner tube of the U-shaped condenser 202. It plays a role in limiting the distance between each U-shaped condenser 202, keeping each U-shaped condenser 202 parallel to each other, and at the same time participates in further regulating the steam flow direction.

[0042] First, by precisely aligning the two first opening grooves 203c on the first mounting plate 203a with the two straight sections of the U-shaped condenser tube 202, a tight clamping is achieved. Next, a movable first baffle 203d on the first mounting plate 203a is rotated so that the two ends of the first baffle 203d just cover the two first opening grooves 203c, thereby cleverly fixing a semicircular first blade 203 on the condenser tube 202, and the concave surface of the first blade 203 faces the direction of the steam flow, so that the steam power drives the first blade 203 to rotate. The first blade 203 is cleverly designed and gradually becomes thinner along the steam flow direction, which not only helps to guide the steam to the direction of the outlet tube 103, but also promotes the increase of the steam flow rate.

[0043] After being guided by the first blade 203, the steam is first guided to the central area of ​​the shell by the first outer partition 104a, and then encounters the second partition 104b to guide it again, so that it flows alternately between the center and the outside, and then encounters the central partition 104c to guide the steam to flow outside the shell. Due to its symmetrical setting, the steam needs to undergo multiple turns and diversions in this process, and is finally guided to the outlet pipe 103 at the other end of the outer shell 101 for discharge. The complex design of the entire path greatly increases the contact opportunity between the steam and the condenser 202, and significantly improves the heat exchange efficiency.

[0044] The remaining structures are the same as those of Example 1.

[0045] Example 3 Reference Figure 1-6 , which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that: a first cover shell 205 and a second cover shell 206 are rotatably arranged on the outer wall of the turntable 201, the first cover shell 205 and the second cover shell 206 are arranged concentrically, and the second cover shell 206 is located outside the first cover shell 205. The inlet of each condensation tube 202 is located in the first cover shell 205, and the outlet of each condensation tube 202 is located in the second cover shell 206. The first cover shell 205 and the second cover shell 206 are fixed, and the second cover shell 206 is fixed to one end of the housing 101. The end surface of the first cover shell 205 is provided with an injection port 205a, and the lower side wall of the second cover shell 206 is provided with an outflow port 206a.

[0046] Innovation of cover structure: (1) Double-layer cover design: Two concentric and functionally distinct covers are provided on the outer wall of the turntable 201, namely, the first cover 205 and the second cover 206, and the second cover 206 is located outside the first cover 205. This design effectively divides the inlet and outlet fluid spaces of the condenser 202, thereby improving the organization and efficiency of heat exchange.

[0047] (2) Clear fluid channels: The inlets of all condensing tubes 202 are concentrated in the first housing 205 to ensure that cold water is introduced in an orderly manner, while the outlets are located in the second housing 206 to allow the water that has exchanged heat to flow out smoothly. This layout ensures the separation of the cold water paths, avoids mutual interference, and optimizes the heat exchange process.

[0048] (3) Fixing and interface design: The first cover shell 205 and the second cover shell 206 are fixed together, and the second cover shell 206 is fixed at one end of the outer shell 101. Such a structural design ensures that when the turntable 201 rotates with the condenser 202, the first cover shell 205 and the second cover shell 206 remain stationary, so that the pipes connecting the first cover shell 205 and the second cover shell 206 remain stationary. The end face of the first cover shell 205 is provided with an injection port 205a to facilitate the addition of cold water; the outlet below the side wall of the second cover shell 206 is used to discharge the heat-exchanged water to achieve a closed cycle.

[0049] Each second blade 204 is fan-shaped and tilted along the direction of cold water flow. The second blade 204 includes an arc-shaped second mounting plate 204a, and second plates 204b are arranged on both sides of the second mounting plate 204a. Two second opening grooves 204c are arranged on both ends of the second mounting plate 204a. The second opening grooves 204c are clamped at the inlet sections of two adjacent condensing tubes 202. A slidable second baffle 204d is arranged at each end of the inner wall of the second mounting plate 204a, and the second baffle 204d is used to block the second opening grooves 204c.

[0050] The sophisticated design of the second blade 204: (1) Blade layout and shape: The second blades 204 are arranged in a fan-like shape and are designed to be inclined along the flow direction of the cold water. This layout is intended to promote the effective acceleration of the cold water at the inlet section of the condenser 202 through the shape and arrangement of the blades.

[0051] (2) Second mounting plate 204a and second opening groove 204c: Each second blade 204 is composed of an arc-shaped second mounting plate 204a. The second mounting plate 204a has a second plate 204b on each side thereof for guiding the water flow. The second opening grooves 204c arranged on the sides at both ends of the second mounting plate 204a can be precisely engaged with the inlet section of the adjacent condenser tube 202, thereby ensuring a firm connection between the second blade 204 and the condenser tube 202, while allowing cold water to pass smoothly.

[0052] (3) Sliding second baffle 204d mechanism: A sliding second baffle 204d is provided on each of the inner walls at both ends of the second mounting plate 204a. Its function is to block the second opening groove 204c as needed. This sliding design not only facilitates the installation and maintenance of the second blade 204, but also can be dynamically adjusted according to the fluid pressure and flow rate, thereby further optimizing the flow control of the cold water.

[0053] The remaining structure is the same as that of Example 2.

[0054] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be changed or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0055] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A shell and tube condenser, characterized in that: include, The housing component (100) comprises a housing (101), an inlet pipe (102) eccentrically arranged above one end of the housing (101), and an outlet pipe (103) installed below the other end of the housing (101); The tube body component (200) is installed in the shell component (100), and includes a turntable (201) arranged at one end of the shell (101), and a plurality of U-shaped condensing tubes (202) are arranged in a circular shape at equal intervals on the turntable (201), and a detachable first blade (203) is provided at the U-shaped end of the condensing tube (202) and is located directly below the inlet pipe (102), and a second blade (204) is provided at the inlet of each condensing tube (202).

2. The shell and tube condenser according to claim 1, characterized in that: Each of the first blades (203) is fan-shaped, and each of the first blades (203) is arranged in a semicircular arc shape and gradually becomes thinner along the flow direction of the hot steam.

3. The shell and tube condenser according to claim 1 or 2, characterized in that: The first blade (203) comprises a first long strip mounting plate (203a), and a first plate (203b) arranged at one end of the first mounting plate (203a), two first opening grooves (203c) are arranged on the side of the first mounting plate (203a), the first opening grooves (203c) are clamped to the condenser (202), and a rotatable first baffle (203d) is arranged at the center of the side of the first mounting plate (203a), and the first baffle (203d) is used to seal the two first opening grooves (203c).

4. The shell and tube condenser according to claim 1, characterized in that: A first cover shell (205) and a second cover shell (206) are rotatably arranged on the outer wall of the rotating disk (201); the first cover shell (205) and the second cover shell are arranged concentrically, and the second cover shell (206) is located outside the first cover shell (205).

5. The shell and tube condenser according to claim 4, characterized in that: The inlet of each condensation tube (202) is located in the first housing (205), and the outlet of each condensation tube (202) is located in the second housing (206).

6. The shell and tube condenser according to claim 5, characterized in that: The first cover shell (205) is fixed to the second cover shell (206); the second cover shell (206) is fixed to one end of the outer shell (101); an injection port (205a) is provided on the end surface of the first cover shell (205); and an outflow port (206a) is provided below the side wall of the second cover shell (206).

7. The shell and tube condenser according to claim 1, characterized in that: The inner diameter of the U-shaped condenser tube (202) gradually decreases at its U-shaped end, while the outer diameter remains unchanged.

8. The shell and tube condenser according to claim 1, characterized in that: Each of the second blades (204) is fan-shaped and inclined along the direction of cold water flow. The second blade (204) includes an arc-shaped second mounting plate (204a). Second plates (204b) are provided on both side surfaces of the second mounting plate (204a). Two second opening grooves (204c) are provided on both end sides of the second mounting plate (204a). The second opening grooves (204c) are clamped in the inlet sections of two adjacent condensing tubes (202). A slidable second baffle (204d) is provided at each end of the inner wall of the second mounting plate (204a). The second baffle (204d) is used to seal the second opening groove (204c).

9. The shell and tube condenser according to claim 1, characterized in that: A plurality of partitions (104) are arranged inside the shell (101); the partitions (104) are symmetrically distributed inside the shell (101), and the partitions (104) on each side are divided into a first partition (104a), a second partition (104b) and a central partition (104c).

10. The shell and tube condenser according to claim 9, characterized in that: The first partition (104a) is configured to be annular, and its inner wall is clamped on the outer tube of the U-shaped condenser (202), and the outer wall is provided with balls that roll in the grooves opened on the inner wall of the outer shell (101); the second partition (104b) is configured to be annular, and is located between the inner tube and the outer tube of the U-shaped condenser (202); the central partition (104c) is configured to be disc-shaped, and its outer wall is clamped on the inner tube of the U-shaped condenser (202).

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