Steam condensate water treatment device

Abstract

The utility model provides a steam condensate water treatment device. The steam condensate water treatment device comprises a shell, a heat exchange pipe assembly, a front end socket assembly, a rear end socket assembly, a pipe plate and a plurality of supporting partition plates. The shell is a cylindrical hollow shell arranged in the horizontal direction, and the front end and the rear end of the shell are connected with the front end socket assembly and the rear end socket assembly through flanges correspondingly. The heat exchange tube assembly comprises a plurality of heat exchange tubes, the heat exchange tubes are arranged on a plurality of supporting partition plates arranged in the shell at intervals in a penetrating mode, the two ends of each heat exchange tube are fixed to tube plates on the inner side of the front end socket assembly and the inner side of the rear end socket assembly respectively, each supporting partition plate is of an arc-shaped plate body structure with a notch, and the multiple supporting partition plates are arranged in the axial direction of the shell in a staggered mode. The notches of the adjacent supporting partition plates face opposite directions; a cooling medium inlet and a cooling medium outlet are formed in the side wall of the shell; a steam inlet is formed in the end of the front end socket assembly, and a condensate water outlet is formed in the end of the rear end socket assembly. According to the invention, a more sufficient cooling effect can be obtained, and a heat exchange blind area can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchange equipment, and in particular to a steam condensate water treatment device. BACKGROUND

[0002] Steam condensate water treatment technology is widely used in the industrial fields of chemical industry, metallurgy, electric power, food processing, etc. Steam condensate water treatment technology is particularly suitable for the recovery and condensation treatment of steam waste heat in an industrial steam system. In order to realize the effective conversion of steam into condensate water, a heat exchange device is often used to condense high-temperature steam by heat exchange with a cooling medium in a certain structure. This process is widely used in the chemical, energy, and papermaking industries. The basic principle is to realize the heat exchange process between steam and a cooling medium through a structural device, effectively condensing the steam into liquid water for further collection or discharge.

[0003] In the prior art, steam condensate water treatment equipment generally adopts a shell-and-tube heat exchange structure, which usually has multiple groups of heat exchange tubes arranged inside and is supplemented by corresponding end covers and other components to form a closed heat exchange channel. In order to ensure the stability of the equipment during operation and avoid deformation of the heat exchange tubes under the action of fluid impact or gravity, support members are usually arranged inside the shell to support and position the heat exchange tubes in a certain form, thereby improving their service life and heat transfer reliability.

[0004] However, there are still some problems in actual application. Some equipment shows low heat exchange efficiency during operation. Analysis shows that this may be related to the insufficient flow guiding ability of the internal structure of the shell to the cooling medium. When the cooling medium has a single flow path in the equipment, is unevenly distributed, or is difficult to fully cover the surface of the heat exchange tubes, it will lead to a decrease in heat exchange effect and affect the energy efficiency performance of the entire system. Therefore, how to improve the structure of the steam condensate water treatment device so that the cooling medium can more fully and effectively act on the heat exchange surface during the heat exchange process, thereby improving the heat exchange efficiency, is a technical problem that needs to be solved in the structural optimization of such equipment. CONTENT OF THE INVENTION

[0005] The present application provides a steam condensate water treatment device to solve the problem of insufficient cooling medium action and low heat exchange efficiency due to limited structural guiding effect in existing equipment.

[0006] The present application provides a steam condensate water treatment device, which comprises a shell, a heat exchange tube assembly, a front end cover assembly, a rear end cover assembly, a tube sheet, and multiple support partitions.

[0007] The shell is a cylindrical hollow shell arranged in a horizontal direction, and front and rear ends of the shell are connected with a front head assembly and a rear head assembly through flanges respectively; the heat exchange pipe assembly comprises a plurality of heat exchange pipes arranged in parallel along the axial direction of the shell, each of the heat exchange pipes is arranged on a plurality of support partitions arranged at intervals in the shell, and two ends of each of the heat exchange pipes are fixed to tube sheets inside the front head assembly and the rear head assembly respectively; the support partition is a circular arc plate structure with a notch, and a plurality of the support partitions are arranged in a staggered manner along the axial direction of the shell, and notches of adjacent support partitions face in opposite directions; the shell side wall is provided with a cooling medium inlet for introducing a cooling medium and a cooling medium outlet for discharging the cooling medium; an end of the front head assembly is provided with a steam inlet, and an end of the rear head assembly is provided with a condensed water outlet.

[0008] As an optional mode of the present application, the support partition is a two-thirds circular arc plate structure with a notch at the edge, and the notch of the support partition is located at the edge region of the support partition and is a fan-shaped missing segment, for forming a cooling medium disturbance passage, and the support partition is fixed to the inner wall of the shell by welding.

[0009] As an optional mode of the present application, a plurality of through holes are uniformly arranged on the support partition, and each of the heat exchange pipes is arranged in one-to-one correspondence in each of the through holes, for maintaining the relative position of the heat exchange pipes and preventing vibration displacement.

[0010] As an optional mode of the present application, the support partitions are arranged in a staggered manner and partially overlap along the axial direction of the shell, and the notches of the front and rear adjacent support partitions face each other at 180°.

[0011] As an optional mode of the present application, the number of the heat exchange pipes is not less than fifty, the heat exchange pipes are of a straight-through structure, the heat exchange pipes are arranged in a regular array along the tube sheet and penetrate through each of the support partitions.

[0012] As an optional mode of the present application, the tube sheet is a circular plate uniformly provided with circular holes penetrating through each of the heat exchange pipes, the tube sheet is fixedly connected with the end of the shell by welding, the tube sheet is connected with each of the heat exchange pipes by expansion or welding, and an annular sealing gasket is arranged on the periphery of the tube sheet, for sealing cooperation with the front head assembly and the rear head assembly respectively;

[0013] The front head assembly and the rear head assembly are respectively connected and fixed with the flange end face of the shell through bolts, the inside of the front head assembly and the rear head assembly is provided with a flow guide chamber, and the tube sheet is cooperated with the front head assembly and the rear head assembly to package the heat exchange pipes in the shell, so as to form a tube side for steam flow and condensation.

[0014] As an optional mode of the present application, the steam inlet is arranged at a middle position of the end of the front head assembly, for guiding the steam into the inner cavity of the front head assembly and then distributing it to the inside of the heat exchange pipe; the condensed water outlet is arranged at a lower position of the end of the rear head assembly, for leading out the condensed water formed by condensation from the heat exchange pipe, and the height of the condensed water outlet is lower than that of the steam inlet.

[0015] As an optional mode of the present application, the top of the side wall of the shell is provided with a plurality of mounting interfaces for respectively mounting a temperature sensor, a pressure gauge and a safety valve.

[0016] As an optional mode of the present application, the cooling medium inlet is arranged at the lower part of the side wall of one end of the shell, the cooling medium outlet is arranged at the upper part of the side wall of the other end of the shell, and the shell and the heat exchange pipe assembly form a shell-side cooling channel for the flow of the cooling medium.

[0017] As an optional mode of the present application, a supporting base is further included, which is arranged at the bottom of the shell and includes at least two arc-shaped supporting members.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] 1. The present application provides a steam condensate treatment device, which is characterized in that a plurality of supporting partitions are arranged in the shell in the axial direction, each supporting partition adopts a circular arc plate structure with a notch, and the adjacent supporting partitions are arranged in a staggered manner, and the notches of the adjacent supporting partitions face in opposite directions. Compared with the traditional whole circular partition, the design of the present application makes the cooling medium flow in the shell-side cooling channel formed between the shell and the heat exchange pipe assembly, and needs to pass through the staggered notch area in sequence. The fluid channel presents a nonlinear extension in the axial direction, thereby gradually forming a disturbance path with multiple turns. This structural form is beneficial to breaking the original straight flow direction, so that the cooling medium forms multiple angle scouring on the outer wall of the heat exchange pipe, and establishes a good heat exchange foundation condition.

[0020] 2. Due to the alternating arrangement of the notch directions of the supporting partitions, the cooling medium needs to continuously change direction during the flow process, and the streamline trajectory is no longer a straight path, but presents an S-shaped or similar turn-back flow form. The fluid continuously deflects in the channel, and is accompanied by disturbance, local turbulence and redistribution in the process, so that it forms more uniform surrounding and scouring on the outside of the heat exchange pipe. The establishment of this disturbance path helps to improve the heat exchange efficiency of the surface of the heat exchange pipe, and especially for the heat exchange pipes arranged in the upper or bottom area of the shell, a more sufficient cooling effect can also be obtained, thereby reducing the probability of occurrence of heat exchange blind area and fluid short circuit.

[0021] 3. The application enhances the disturbance ability of the cooling medium while maintaining good mechanical support performance through the cooperation of structural optimization design and fluid guiding mechanism. The support partition plate is used for penetrating the heat exchange pipe, thereby limiting the displacement and enhancing the structural stability. The overall arrangement takes into account both the flow guiding performance and the mechanical support, so that the cooling medium can more fully act on the outer wall of the heat exchange pipe, improving the coverage range and utilization degree of heat exchange. The structure does not need to introduce additional complex components to optimize the heat exchange efficiency, and has good engineering practicability and popularization value. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 The overall schematic diagram of the steam condensate water treatment device provided by an embodiment of the present application is shown in the figure.

[0024] Figure 2 The schematic diagram of the steam condensate water treatment device provided by an embodiment of the present application is shown in the figure.

[0025] Figure 3 The cooperation schematic diagram of the heat exchange pipe assembly and the support partition plate provided by an embodiment of the present application is shown in the figure.

[0026] Figure 4 The connection schematic diagram of the support partition plate and the connecting rod provided by an embodiment of the present application is shown in the figure.

[0027] Figure 5 The overall schematic diagram of the steam condensate water treatment device provided by an embodiment of the present application is shown in the figure.

[0028] In the figure:

[0029] 1 - shell; 11 - cooling medium inlet; 12 - cooling medium outlet; 13 - mounting interface; 2 - heat exchange pipe assembly; 21 - heat exchange pipe; 3 - front head assembly; 31 - steam inlet; 4 - rear head assembly; 41 - condensate outlet; 5 - tube sheet; 51 - sealing gasket; 6 - support partition plate; 61 - through hole; 62 - connecting rod; 7 - support base; 8 - flange. DETAILED DESCRIPTION

[0030] To make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are clearly and completely described below. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present application.

[0031] Referring to Figures 1-5 , the embodiments of the present application provide a steam condensate water treatment device, which is suitable for the condensation recovery process of industrial steam, and in particular, a tube-shell type condensation device with optimized structure, high heat exchange efficiency, and stable operation, as shown in Figures 1-5 , the steam condensate water treatment device comprises a shell 1, a heat exchange tube assembly 2, a front head assembly 3, a rear head assembly 4, a tube plate 5, and a plurality of support partitions 6.

[0032] The shell 1 is a cylindrical hollow shell arranged in the horizontal direction. The front and rear ends of the shell 1 are connected with the front head assembly 3 and the rear head assembly 4 through flanges 8, respectively, so that the assembly process is simplified and maintenance is facilitated. The heat exchange tube assembly 2 comprises a plurality of heat exchange tubes 21 arranged in parallel along the axial direction of the shell 1. Each heat exchange tube 21 is arranged on a plurality of support partitions 6 arranged at intervals in the shell 1. The two ends of each heat exchange tube 21 are fixed to the tube plate 5 on the inner side of the front head assembly 3 and the rear head assembly 4, respectively, so as to enhance the structural rigidity and stability of use of the heat exchange tube assembly 2. The support partition 6 is an arc-shaped plate structure with a notch, and a plurality of support partitions 6 are arranged in a staggered manner along the axial direction of the shell 1. The notches of adjacent support partitions 6 face in opposite directions. Such a design and arrangement of the support partition 6 can enhance the turbulent flow of the cooling medium, thereby improving the condensation efficiency. The side wall of the shell 1 is provided with a cooling medium inlet 11 for introducing the cooling medium and a cooling medium outlet 12 for discharging the cooling medium. The end of the front head assembly 3 is provided with a steam inlet 31, and the end of the rear head assembly 4 is provided with a condensate water outlet 41.

[0033] In the steam condensate water treatment device of the present embodiment, a plurality of support partitions 6 are arranged in the shell 1 along the axial direction. Each support partition 6 is an arc-shaped plate structure with a notch, and is arranged in a staggered manner from front to back, with the notches of adjacent support partitions 6 facing in opposite directions. Compared with the traditional whole-circle partition, the design of the present embodiment enables the cooling medium to flow in the shell-side cooling channel formed between the shell 1 and the heat exchange tube assembly 2 by sequentially passing through the staggered notch regions. The fluid channel presents a non-linear extension in the axial direction, thereby gradually forming a disturbed path with multiple turns. This structural form is conducive to breaking the original straight flow direction, enabling the cooling medium to form multi-angle scouring on the outer wall of the heat exchange tube 21, and establishing a good heat exchange foundation condition.

[0034] Due to the alternate arrangement of the gap directions of the support partitions 6, the cooling medium needs to continuously change direction during flow, and the streamline trajectory is no longer a straight path through, but presents an S-shaped or similar meandering flow pattern. The fluid is constantly deflected in the channel, accompanied by disturbance, local turbulence and redistribution during the process, so that it forms a more uniform surrounding and flushing outside the heat exchange pipe 21. The establishment of such a turbulent path helps to improve the heat exchange efficiency of the surface of the heat exchange pipe 21, and for the heat exchange pipes arranged in the upper or bottom area of the shell 1, a more sufficient cooling effect can also be obtained, thereby reducing the probability of occurrence of heat exchange blind area and fluid short circuit.

[0035] The above-mentioned structure and the fluid guiding mechanism cooperate to enhance the disturbance ability of the cooling medium while maintaining good mechanical support performance. The support partition 6 is used to pass through the heat exchange pipe 21 to limit its displacement and enhance the structural stability, so that both the flow guiding performance and the mechanical support are taken into account, so that the cooling medium can more fully act on the outer wall of the heat exchange pipe, improve the coverage and utilization degree of heat exchange, and the structure does not need to introduce additional complex components to optimize the heat exchange efficiency, has good practicability and popularization value.

[0036] In the embodiment, a plurality of support partitions 6 with notched circular arc structures are arranged in the shell 1, the support partitions 6 are staggered along the axial direction of the shell, and the gaps of adjacent support partitions 6 face opposite directions. The structure design makes the cooling medium need to change direction continuously during flow, and the path is meandering or curved. Compared with the traditional symmetrical circular partition arrangement, this staggered arrangement does not increase the complexity of the structure, but can effectively break the straight-line through flow state of the cooling medium, thereby introducing disturbance in the flow field, thereby reducing the local cooling dead angle in the shell to a certain extent, which has a positive effect on the improvement of steam condensation efficiency.

[0037] In the above-mentioned embodiment, a plurality of heat exchange pipes 21 of the heat exchange pipe assembly 2 are arranged in parallel along the axial direction of the shell 1, respectively pass through a plurality of support partitions 6, and are respectively fixed to the tube sheets 5 inside the front head assembly 3 and the rear head assembly 4 at both ends. Considering that the heat exchange pipes 21 are long and dense in number, if there is no effective support, local bending, shaking or even vibration may occur during operation due to steam pressure or cooling water impact. The embodiment positions and supports the heat exchange pipes by arranging a plurality of support partitions 6 in the shell 1 at intervals, and stably connects the heat exchange pipes by the tube sheets 5 at both ends, so that the heat exchange pipes can be better positioned, thereby reducing the structural stress caused by mechanical vibration, prolonging the service life of the device, and reducing the maintenance frequency.

[0038] In addition, the front and rear ends of the shell 1 are connected with the front head assembly 3 and the rear head assembly 4 through flanges 8, respectively. This connection structure is widely used in the industry, and has the characteristics of convenient disassembly and assembly, good sealing performance, etc. Compared with welding connection, the flange form is convenient for users to check or clean the internal heat exchange tube 21, tube plate 5 and cavity structure in the later stage of operation, and is suitable for modular installation and transportation. The front head assembly 3 is provided with a steam inlet 31, and the rear head assembly 4 is provided with a condensed water outlet 41. The steam inlet 31 and the condensed water outlet 41 constitute a continuous tube structure with the closed flow channel of the heat exchange tube 21, so that the steam can be smoothly introduced and complete condensation in the heat exchange tube 21, and the condensed water can be smoothly discharged. The heat exchange path is clear, and the device operation tends to be more stable and efficient.

[0039] In some embodiments, the support partition plate 6 is a two-thirds circular arc plate body structure with a notch at the edge. The notch of the support partition plate 6 is located at the edge area of the support partition plate 6 and is a fan-shaped missing segment, which is used to form a cooling medium disturbance passage, enhance fluid disturbance, and the use of the support partition plate 6 also enhances the support effect of the heat exchange tube. The support partition plate 6 is fixed in the inner wall of the shell 1 by welding, which can improve the structural stability and durability of the whole device.

[0040] Optionally, connecting rods 62 are connected among the plurality of support partitions 6 to make the support partitions 6 in the shell 1 into a whole through the connection of the connecting rods 62, so as to enhance the structural stability of the support partitions 6 in the axial direction. By arranging the connecting rods 62, the deviation, skew or loosening of the support partitions 6 under the operating conditions such as high temperature, fluid impact or device vibration can be effectively prevented, so as to ensure that the relative positional relationship between the support structure and the heat exchange pipes 21 remains stable for a long time. The connecting rods 62 are usually in the form of straight rod structure, and the two ends thereof are respectively fixed on the adjacent support partitions 6 by welding, screwing or expanding, etc. The connecting rods 62 penetrate through the plurality of support partitions in the shell 1. By this structure, a support system of “point-line combination” can be formed, which not only enhances the bending strength of the support partitions 6 as a whole, but also provides a more stable limiting effect on each heat exchange pipe 21. The number of the connecting rods 62 should be reasonably arranged according to the number of the support partitions 6, the size of the shell 1 and the operating load, and should not be arranged too much, so as not to block the normal flow path of the cooling medium in the shell side passage, especially in the turbulence area formed between the support partitions 6. Too many connecting rods 62 may cause the cooling medium flow to be blocked, resulting in local dead zones and reducing the heat exchange efficiency. Therefore, it is suggested that the number and diameter of the connecting rods 62 should be properly controlled under the premise of ensuring the structural strength, so as to balance the structural support and the smooth flow of the fluid. In this embodiment, specifically, the number of the connecting rods 62 is preferably four, which are distributed along the circumferential direction of the arc plate body of the support partitions 6 at intervals. The four connecting rods 62 form a four-point rigid support frame in structure, which has good deformation resistance and is beneficial to keeping the support partitions 6 in a flat state and effectively inhibiting the torsion and sagging of the support partitions 6 in the axial direction. The four connecting points provide sufficient structural rigidity, while avoiding the problem of blocking the flow of the cooling medium caused by too many connecting rods 62.

[0041] In the above embodiment, the shape of the support partition 6 is further limited to a three-second arc-shaped plate structure with notches at the edges. This structure not only retains the support effect on the heat exchange pipes 21, but also allows the edge cooling medium to pass through the notch area of the support partition 6. Compared with the whole closed circular plate structure or the plate structure with too large notch area, this design forms a more balanced balance between the pipe bundle support and the fluid passage. By arranging the support partitions 6 in the form of three-second arc-shaped plate structure with notches at the edges, the heat exchange pipes 21 can be reliably positioned, the shaking and displacement can be reduced, and the continuous flow path for the cooling medium is provided in the notch area of the one side edge, which is helpful for the downstream transfer of the fluid and enhances the overall heat exchange capacity.

[0042] The gap of the support partition plate 6 is a fan-shaped missing section. Not only does it play a role in opening the structure, forming a flow channel between the support partition plate 6 itself and the inner wall of the shell 1, but the presence of the additional heat exchange pipe 21 at this location also divides the flow channel formed by the fan-shaped missing gap of the support partition plate 6 into multiple flow channels through which the cooling medium can pass, thereby achieving the targeted flow guiding function of the cooling medium. Moreover, the profile boundary of the fan-shaped structure forms a flow line guiding surface, and the speed gradient of the cooling medium changes along the boundary when it flows through, thereby inducing disturbances. In the case of multiple such support partition plates 6 arranged axially staggered, the cooling medium needs to pass through the gaps arranged at different positions multiple times, and the fluid direction is constantly deflected during the passing process, thereby inducing the formation of local vortexes, rolling and stratification. This fan-shaped opening is more prominent in spatial guidance, enabling the cooling medium to more evenly cover the outer surface of the heat exchange pipe 21, thereby improving the uniformity and efficiency of the shell-side heat exchange.

[0043] In addition, in the present embodiment, the support partition plate 6 is fixed to the inner wall of the shell 1 by welding. This connection form is more stable than the slot or screw connection form, and can adapt to the strong cooling medium scouring force in the shell side. In particular, under the premise that the support partition plate 6 of the present application is a complete circular plate structure, welding can improve its ability to maintain position stability during long-term operation and reduce structural loosening caused by thermal expansion and contraction or vibration. At the same time, the welded connection is also conducive to enhancing the structural continuity and sealing performance of the device as a whole, reducing the number of component interfaces, and helping to reduce the difficulty of manufacturing and assembly. Therefore, the combination of this fixing method and the structural design of the support partition plate 6 not only has good mechanical support effect, but also provides strong support for the stability and long-term operation of the device.

[0044] In some embodiments, a plurality of through holes 61 are uniformly provided on the support partition plate 6, and each heat exchange pipe 21 is correspondingly arranged in each through hole 61, for maintaining the relative position of the heat exchange pipe 21 and preventing vibration displacement. Specifically, the through hole 61 and the heat exchange pipe 21 are fixedly connected by welding. The present embodiment provides the through hole 61 on the support partition plate 6 and makes the heat exchange pipe 21 correspondingly arranged therein, which helps to improve the standardization of axial arrangement of the heat exchange pipe 21 and the overall pipe arrangement uniformity. The through hole 61 can provide position limiting constraint for the heat exchange pipe 21, effectively reducing the transverse vibration caused by thermal expansion and contraction and fluid impact. The following will be described in detail.

[0045] In the above embodiments, multiple through holes 61 are uniformly arranged on the support partition plate 6, and each through hole 61 corresponds to one heat exchange tube 21, so that each heat exchange tube 21 has a stable positioning point in the tube body part, and is particularly suitable for the case where multiple heat exchange tubes are arranged in parallel along the axial direction of the shell 1. Moreover, through the constraint effect of the through holes 61, the heat exchange tubes 21 can be kept consistent in arrangement, which is beneficial to the neatness of the overall tube arrangement and also provides convenience for accurate positioning and batch assembly in the manufacturing process. Compared with the fixing method relying only on the two end tube plates 5, this structure has obvious advantages in improving processing precision and reducing installation errors.

[0046] Since the heat exchange tubes 21 are easily affected by steam flow impact or temperature fluctuations during operation, especially when the length is relatively long, if there is no effective support, bending, swinging or even fatigue damage may occur. In the present embodiment, the through holes 61 and the heat exchange tubes 21 are mutually fitted, and the support points are formed at each through hole 61 of the support partition plate 6, which can effectively reduce the transverse degree of freedom and limit the running displacement. This kind of structure similar to multi-point support makes the heat exchange tubes more stable when subjected to internal fluid impact or thermal stress changes, reduces the vibration amplitude, and also reduces the structural wear caused by mutual collision, which helps to improve the stability and reliability of the device under long-term operating conditions.

[0047] In addition, the through holes 61 not only play the role of tube bundle limiting, but also cooperate with the staggered arrangement of the support partition plate 6 to stabilize the position of the heat exchange tubes 21 during fluid disturbance. The cooling medium enters from one end of the shell 1 and flows forward along the gap area of the support partition plate 6. If the position of the heat exchange tube is unstable, it is easy to interfere with the flow direction and cause flow field disorder. The through hole structure tightly fixes each heat exchange tube, which keeps it relatively stable during medium flow, which helps the cooling medium to be distributed on the outer wall of each tube along the set path, which is beneficial to the uniform development of the heat transfer process, and further improves the heat exchange efficiency.

[0048] In some embodiments, the support partition plates 6 are arranged in a staggered manner along the axial direction of the shell 1 and partially overlap, and the gaps of the front and rear adjacent support partition plates 6 face each other at 180°.

[0049] In the present embodiment, the plurality of support partitions 6 are staggered along the axial direction of the shell 1 and overlap to some extent during arrangement. This arrangement forms a non-linear flow channel in the shell 1, which is composed of a plurality of offset gaps. Compared with the conventional equal-interval and gap-alignment arrangement, the staggered and overlapping structure forces the cooling medium to constantly adjust the advancing direction during flow, and the flow line presents a multi-segment broken line trend. Since the fluid frequently changes direction, its contact opportunity with the outer surface of the heat exchange tube 21 increases significantly, especially in the tube row area located at the upper and lower parts of the heat exchanger, which can significantly reduce the formation of cooling blind areas and make the overall heat exchange process more uniform.

[0050] In addition, the gap directions of the front and rear adjacent support partitions 6 are designed to be arranged in a 180° opposite manner, i.e., one up and one down, and are arranged in sequence in a staggered manner, so that the cooling medium constantly alternates up and down in the flow path. This arrangement causes the fluid to present a complex path of "S" or broken line, limiting the possibility of straight-through flow. During continuous bending flow, the velocity distribution of the cooling medium is more complex, the shear effect is enhanced, and local turbulent flow is easily formed. The generation of turbulent flow helps to break the boundary layer structure near the surface of the heat exchange tube 21, improve the local heat transfer coefficient, and effectively improve the condensation heat exchange efficiency without increasing the size of the device. At the same time, this staggered structure also helps to suppress the flow deviation phenomenon and improve the uniformity of heat exchange in the shell side.

[0051] The cooling medium flows in the up-and-down alternating path, so that its heat transfer is no longer concentrated in a certain horizontal plane, but is more uniformly distributed in the entire height direction of the shell 1. This spatial flow pattern allows the heat exchange tubes 21 at different heights to be uniformly washed by the cooling medium, thereby reducing the problem of concentrated temperature difference gradient caused by uneven flow. Further, this arrangement helps to reduce the formation of local hot spots during operation, and is particularly suitable for industrial cooling scenarios with high requirements for condensation efficiency and temperature uniformity.

[0052] In some embodiments, the number of heat exchange tubes 21 is not less than fifty, which can increase the heat transfer area per unit volume. The heat exchange tube 21 is of a straight-through structure, which helps to simplify the steam flow path, reduce the flow resistance, and increase the condensation flow rate. The heat exchange tube 21 is arranged in a regular array along the tube plate 5 and penetrates through the support partitions 6, which helps to improve the overall rigidity and heat flow uniformity of the structure.

[0053] Specifically, the number of heat exchange pipes 21 is not less than fifty in the embodiment, and the number of heat exchange pipes 21 is 50 to 300, so that a dense tube bundle area is formed in structure. As a key component for heat exchange between steam and cooling medium, the number of heat exchange pipes directly affects the overall heat transfer area. In the case of constant size of the shell 1, appropriately increasing the number of heat exchange pipes is conducive to improving the heat flux level in a limited volume, thereby enhancing the efficiency of steam condensation. At the same time, the number is balanced between heat transfer performance and manufacturing process, on the one hand, avoiding the waste of space and the decrease of efficiency caused by too sparse pipe arrangement, on the other hand, avoiding the problem of flow resistance rising caused by too dense tube pitch.

[0054] The embodiment adopts a straight-through heat exchange pipe structure. After the steam is introduced through the front head assembly 3, it flows linearly to the rear head assembly 4 in the axial direction of the pipeline without interruption, without turning or branch flow design. The structure has a simple design path and smooth flow. The steam can quickly occupy the space in the pipe and effectively exchange heat with the cooling medium outside the pipe. Since there is no flow turning section in the process, the overall pressure drop is small, which can reduce the condensation lag problem of the steam in the transmission process, thereby helping to maintain stable and uniform condensation effect. Such continuous linear flow channel is also conducive to improving the heat transfer efficiency and improving the stability of the condensate discharge.

[0055] On the tube plate 5, the heat exchange pipes 21 are arranged in a regular array, and the whole penetrates through multiple support partitions 6, forming an ordered spatial network structure. Such regular arrangement not only facilitates uniform distribution of steam at the front end, but also improves the flow consistency of steam in each heat exchange pipe. At the same time, the support partitions 6 provide multiple-point limiting for the heat exchange pipes in the shell, so that the heat exchange pipes form a structure system with stable support in three-dimensional directions. Such structure can reduce the failure risk of the heat exchange pipes caused by shaking or deformation when subjected to fluid impact or thermal expansion and contraction, and enhance the operation stability of the device.

[0056] In some embodiments, the tube plate 5 is a circular plate uniformly provided with circular holes penetrating through the heat exchange pipes 21. The tube plate 5 is fixedly connected with the end of the shell 1 by welding, and the tube plate 5 is connected with the heat exchange pipes 21 by expansion or welding, which can effectively enhance the overall rigidity and improve the connection reliability. Further, the tube plate 5 is provided with an annular sealing gasket 51 at the periphery, which is used for sealing cooperation with the front head assembly 3 and the rear head assembly 4, respectively.

[0057] The front head assembly 3 and the rear head assembly 4 are respectively connected and fixed with the flange end face of the shell 1 by bolts. The front head assembly 3 and the rear head assembly 4 are provided with flow guide chambers inside. The tube plate 5 cooperates with the front head assembly 3 and the rear head assembly 4 to package the heat exchange pipes 21 in the shell 1, so as to form a tube pass for steam flow and condensation, so that the heat exchange path is clear, which is conducive to realizing efficient condensation of steam in the heat exchange pipes 21.

[0058] In this embodiment, the tube plate 5 is a core structural component connecting the heat exchange tubes 21 and the shell 1, which is a circular structure and has a plurality of circular holes corresponding to the heat exchange tubes 21 uniformly arranged on its surface, so that each heat exchange tube can be sequentially arranged and precisely positioned. The tube plate 5 is firmly connected to the end of the shell 1 by welding, and high-strength connection is established between the tube plate 5 and each heat exchange tube 21 by expansion or welding, so as to build a rigid structure system between the tube plate 5, the heat exchange tube 21 and the shell 1. This multi-point positioning and rigid fixing method can better inhibit the structural displacement and loosening caused by thermal expansion and contraction or internal fluid impact during the operation of the device, which helps to maintain the stability of the tube bundle arrangement and prolong the reliable operation time of the device.

[0059] In order to enhance the sealing performance between the front head assembly 3 and the rear head assembly 4 and the shell 1, the outer edge of the tube plate 5 is provided with an annular sealing gasket 51, which is arranged on the periphery of the tube plate 5 and cooperates with the head assembly to form a stable sealing surface in the connection area. Under high-temperature and high-pressure steam working conditions, the device faces large pressure fluctuations, and poor sealing performance can easily cause leakage, gas-liquid cross or internal short circuit and other problems. The sealing gasket 51 as an elastic sealing element has a certain deformation compensation capacity, which can adapt to the gap change caused by thermal expansion or cold contraction, and plays a sealing buffer role, thereby helping to maintain the independent flow state of steam, cooling medium and condensed water in their respective channels, and reducing the risk of medium cross flow.

[0060] The tube plate 5 cooperates with the sealing gasket 51 to not only form a sealed connection with the front head assembly 3 and the rear head assembly 4 respectively, but also fix the two ends of all heat exchange tubes 21, thereby building a closed tube passage inside the shell 1. After the steam enters the flow guide chamber of the front head assembly 3, it directly enters the inside of the heat exchange tube 21 and flows axially to the inner cavity of the rear head assembly 4. In the whole flow process, the steam realizes heat exchange and condensation with the cooling medium in the shell. The closed structure formed by the tube plate 5, the heat exchange tube 21 and the head assembly is conducive to the stable operation of the steam according to the predetermined path, reduces the risk of leakage, flow interruption or sudden pressure drop, thereby improving the continuity and controllability of the heat exchange process, and improving the energy efficiency and safety of the device as a whole.

[0061] In some embodiments, the steam inlet 31 is arranged at a middle position of the end of the front head assembly 3, for guiding the steam into the inner cavity of the front head assembly 3 and then distributing it to the inside of the heat exchange tubes 21, so as to facilitate the steam to fill the heat exchange tubes 21 quickly and be distributed evenly to each tube; the condensed water outlet 41 is arranged at a lower position of the end of the rear head assembly 4, for leading out the condensed water formed by condensation from the heat exchange tubes 21, and the height of the condensed water outlet 41 is lower than that of the steam inlet 31, so that the condensed water can be discharged quickly by the action of gravity, reducing the risk of retention, and a natural flow drop channel from high to low can be formed to simplify the discharge process after the steam is condensed.

[0062] In the present embodiment, the steam inlet 31 is arranged at a middle position of the end of the front head assembly 3, so that the high-temperature steam entering the device can be directly introduced into the middle space of the front head assembly 3. This position arrangement facilitates the steam to spread quickly in the axial direction and evenly to the upper, lower, left and right areas of the inner cavity of the front head assembly 3, reducing the local flow rate jump and helping to reduce the flow resistance of the inlet area. Considering that the steam has the characteristics of natural upward floating due to its small density, the steam can naturally spread upward after being introduced into the middle of the cavity, and also slowly spread to the lower space under the guidance of the flow guide cavity. In order to further improve the steam diffusion effect, the inner cavity of the front head assembly 3 is optionally provided with a flow guide curved surface to improve the diffusion performance of the steam in the inner cavity of the front head assembly 3.

[0063] After the steam is cooled and gradually condensed into condensed water in the inside of the heat exchange tubes 21, it is easy to sink along the inner wall of the tube due to its significantly greater density than steam. Therefore, the condensed water outlet 41 is arranged at a lower position of the rear head assembly 4, so that the condensed water can be discharged from bottom to top by gravity, directly flow into the bottom of the rear head assembly 4 and be discharged smoothly, thereby shortening the residence time of the condensed water in the tube and the inner cavity of the rear head assembly 4, and further helping to reduce the risk of water retention and secondary evaporation.

[0064] In some embodiments, a plurality of mounting interfaces 13 are arranged at the top of the side wall of the shell 1, for respectively mounting temperature sensors, pressure gauges and safety valves.

[0065] Since the cooling medium is in a continuous flow state inside the shell 1, the mounting interfaces 13 are arranged at the top area of the side wall of the shell 1 in the present embodiment, so that the temperature sensors and pressure gauges mounted there are arranged at an upper position of the cooling medium flow field. This position is often closer to the high-temperature and high-pressure area of the cooling medium, so the data collected by the sensors are more representative and can better reflect the operating state inside the shell. At the same time, the top arrangement can also help to avoid impurities or bubbles that may deposit in the lower area of the shell, thereby improving the stability and response accuracy of the monitoring data.

[0066] In the steam condensation operation process, if the cooling medium circulation is not smooth, the heat exchange process is blocked or local blockage occurs, etc., which may cause the pressure in the shell side area inside the shell 1 to gradually rise. In order to deal with this abnormal situation, the installation interface 13 is arranged at the top of the side wall of the shell 1 in this embodiment, which is used to selectively install a safety valve. When the pressure of the cooling medium in the shell 1 exceeds the set threshold value, the safety valve can be automatically opened to realize overpressure relief and prevent the pressure from continuously rising.

[0067] In addition, the arrangement of multiple installation interfaces 13 on the top of the shell 1 also brings certain structural and operation advantages. On the one hand, the temperature sensor, pressure gauge, safety valve and other elements are relatively concentrated in space, which is convenient for electrical wiring, valve pipeline connection and unified control; on the other hand, the top layout makes the maintenance personnel not need to go around to the bottom or back of the device when inspecting, maintaining or replacing related elements, which improves the convenience and safety of the operation.

[0068] In some embodiments, the cooling medium inlet 11 is arranged at the lower part of the side wall of one end of the shell 1, and the cooling medium outlet 12 is arranged at the upper part of the side wall of the other end of the shell 1, and the shell 1 and the heat exchange pipe assembly 2 form a shell side cooling channel for the cooling medium to flow, which helps to build a cooling medium flow path from bottom to top and prolong the heat exchange path of the fluid in the shell side.

[0069] In this embodiment, the cooling medium inlet 11 is arranged at the lower part of the side wall of one end of the shell 1, and the cooling medium enters the device from here and flows upward from the bottom, passes through the shell side space formed by the outer periphery of the heat exchange pipe assembly 2, and finally is discharged from the cooling medium outlet 12 at the upper part of the other end. This diagonal flow arrangement from top to bottom builds a forced convection path from bottom to top, so that the cooling medium can more fully cover the entire internal area of the shell 1 in the axial and vertical directions, which helps to form a uniformly distributed fluid channel and prolong the heat exchange path, thereby improving the heat transfer efficiency of the cooling medium to a certain extent.

[0070] At the same time, a surrounding space region is formed between the shell 1 and the heat exchange pipe assembly 2, which constitutes the shell side channel of the cooling medium. In this channel, the cooling medium flows around the outer surface of the plurality of heat exchange pipes 21, forming a typical heat transfer structure outside the pipe. The cooling medium continuously circulates between the plurality of support partitions 6 and continuously contacts the outer walls of different pipe sections through the deflection path, which can better expand the contact area between the cooling medium and the heat exchange pipes, thereby enhancing the overall heat exchange effect. At the same time, the heat exchange pipes 21 penetrate the support partitions 6 to form a stable support structure, which not only maintains the regularity of the pipe bundle arrangement, but also provides a clear flow channel interface for the cooling medium flow, which helps to reduce flow interference and improve heat exchange uniformity.

[0071] In addition, the cooling medium inlet 11 and outlet 12 are arranged at both ends of the shell 1, forming a transverse heat exchange path, and the medium must pass through the entire heat exchange tube assembly 2 after entering from one end, and then can be discharged from the other end, so that each area of the heat exchange tube can be effectively covered by the cooling medium during the flow process. This can reduce the problem of weak heat exchange caused by low flow in some areas, and also reduce the heat accumulation caused by local stagnation. The through-flow design can maintain the balance of the shell side temperature field and improve the thermal stability of the device, and is suitable for operating environments with high requirements for temperature control accuracy and cooling efficiency.

[0072] In some embodiments, the steam condensate treatment device of the present embodiment further comprises a support base 7, which helps to enhance the stability of the overall structure and improve the support safety during placement. The support base 7 is arranged at the bottom of the shell 1 and comprises at least two arc-shaped support members that can closely fit the cylindrical shape of the shell 1 to improve the contact area and matching degree of the bottom support.

[0073] The steam condensate treatment device is generally large in structure and heavy in weight, and its shell 1 is usually made of a metal cylinder that is subjected to multiple loads such as fluid impact and temperature gradient during operation. The support base 7 is arranged at the bottom of the shell 1 to form a stable force connection between the device and the installation ground, avoiding the wear or uneven stress caused by direct contact between the shell 1 and the ground. As a load-bearing component, the support base 7 can not only evenly distribute the overall weight of the device to the grounding surface, but also effectively suppress the lateral movement of the device during operation, enhance the stability of the device, and reduce the deformation or damage caused by structural stress accumulation during long-term operation.

[0074] In addition, the arc-shaped support members in the support base 7 have an outer contour that matches the cylindrical bottom surface of the shell 1, allowing face contact support between the two. This structure has a larger contact area, thereby reducing the stress per unit area of the contact part and helping to reduce the indentation or deformation caused by stress concentration at the bottom of the shell. In addition, the arc-shaped support members also have a certain wrapping structure feature, which limits and prevents the bottom of the shell 1 from slipping while supporting it. Especially in the case of uneven ground, transportation or slight vibration, it can effectively prevent the device from shifting, displacing or even toppling, and enhance the operational reliability of the device.

[0075] Meanwhile, the present embodiment is provided with no less than two arc-shaped support members, which can be added in actual use according to the length or load-bearing requirement of the device, so as to flexibly adapt to devices of different sizes and weight grades. The plurality of support members can be evenly distributed along the axial direction of the shell 1, so as to make the stress on the bottom of the shell more balanced, reduce the inclination or stress concentration problem caused by external factors such as uneven foundation and ground subsidence, and improve the installation flexibility and stable adaptability of the device in the field environment.

[0076] The following is the use process of the steam condensate water treatment device provided in the present application:

[0077] Before using the steam condensate water treatment device provided in the present embodiment, the device as a whole should be stably placed on the horizontal base surface through the support base 7. Then, the front head assembly 3 and the rear head assembly 4 are respectively installed and connected to the two ends of the shell 1 through the flanges 8, and the fitting state at the sealing gasket 51 is checked to confirm that the sealing performance is good. According to the specific use requirement, the temperature sensor, pressure gauge, safety valve and other monitoring and protection elements can be installed on the mounting interface 13 at the top of the shell 1, and the electrical signal connection with the external monitoring system is completed. Next, the cooling water pipeline is connected to the cooling medium inlet 11 and the cooling medium outlet 12 in turn, and the steam supply pipeline is connected to the steam inlet 31, and the condensate water discharge pipeline is connected to the condensate water outlet 41.

[0078] When the device starts to run, high-temperature steam enters from the middle position of the end of the front head assembly 3 through the steam inlet 31, first enters the flow guide chamber and is distributed to the plurality of heat exchange pipes 21, and advances in the axial direction in the pipe passage. At the same time, the cooling medium enters from the cooling medium inlet 11 at the lower part of the side wall of one end of the shell 1, enters the shell space between the shell 1 and the heat exchange pipe assembly 2, and flows in the staggered turbulent path formed by the plurality of support partitions 6. The cooling medium continuously contacts the outer wall of the heat exchange pipe 21 during the flow process, realizes sufficient heat transfer, and is finally discharged from the cooling medium outlet 12 at the upper part of the side wall of the other end of the shell 1. In this heat exchange process, the temperature of the steam in the pipe gradually decreases and gradually condenses into a liquid state.

[0079] The condensed water formed flows downward along the inner wall of the heat exchange tube 21 under the action of gravity, collects in the lower area of the rear head assembly 4, and is orderly discharged through the condensed water outlet 41. The entire condensation process continues in the closed shell 1 and the heat exchange tube channel, the heat exchange path is clear, the heat exchange efficiency is high, the drainage process is smooth, and the device runs stably. During operation, the temperature sensor and pressure gauge installed at the top can continuously monitor the temperature and pressure state inside the shell, providing data support for operation adjustment. When the internal pressure of the shell exceeds the set pressure point, the safety valve can be automatically opened to achieve timely pressure relief and reduce the risk of device damage. When the condensation work is completed or maintenance is needed, the front head assembly 3 and the rear head assembly 4 can be quickly disassembled by loosening the flange 8, which is convenient for cleaning and maintaining the internal structure.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that; it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A steam condensate treatment apparatus, characterized by, The heat exchanger comprises a shell, a heat exchange pipe assembly, a front head assembly, a rear head assembly, a tube sheet and a plurality of support partitions. The shell is a cylindrical hollow shell arranged in a horizontal direction, and the front and rear ends of the shell are connected with the front head assembly and the rear head assembly through flanges respectively; the heat exchange pipe assembly comprises a plurality of heat exchange pipes arranged in parallel along the axial direction of the shell, each heat exchange pipe is arranged on a plurality of support partitions arranged in the shell, and the two ends of each heat exchange pipe are fixed on the tube sheets inside the front head assembly and the rear head assembly respectively; the support partition is a circular arc plate structure with a notch, and a plurality of support partitions are arranged in a staggered manner along the axial direction of the shell, and the notches of adjacent support partitions face in opposite directions; the side wall of the shell is provided with a cooling medium inlet for introducing cooling medium and a cooling medium outlet for discharging cooling medium; the end of the front head assembly is provided with a steam inlet, and the end of the rear head assembly is provided with a condensed water outlet.

2. The steam condensate treatment device of claim 1, wherein, The support partition is a two-thirds circular arc plate structure with a notch at the edge, and the notch of the support partition is located at the edge region of the support partition and is a fan-shaped missing segment, which is used to form a cooling medium disturbance passage, and the support partition is fixed on the inner wall of the shell by welding.

3. The steam condensate treatment device of claim 2, wherein, A plurality of through holes are uniformly arranged on the support partition, and each heat exchange pipe is arranged in a one-to-one correspondence in each through hole, which is used to maintain the relative position of the heat exchange pipes and prevent vibration displacement.

4. The steam condensate treatment device according to any one of claims 1 to 3, characterized in that The support partitions are arranged in a staggered manner and partially overlap along the axial direction of the shell, and the notches of the front and rear adjacent support partitions face each other at 180°.

5. The steam condensate treatment device of claim 1, wherein, The number of heat exchange pipes is not less than fifty, the heat exchange pipes are of a straight-through structure, and the heat exchange pipes are arranged in a regular array along the tube sheet and penetrate through the support partitions.

6. The steam condensate treatment device of claim 4, wherein, The tube sheet is a circular plate uniformly provided with circular holes penetrating through the heat exchange pipes, the tube sheet is fixedly connected with the end of the shell by welding, the tube sheet is connected with the heat exchange pipes by expansion or welding, and the outer periphery of the tube sheet is provided with an annular sealing gasket for sealing cooperation with the front head assembly and the rear head assembly respectively. The front head assembly and the rear head assembly are respectively connected and fixed with the flange end face of the shell by bolts, the front head assembly and the rear head assembly are provided with flow guide chambers, and the tube sheet is cooperated with the front head assembly and the rear head assembly to package the heat exchange pipes in the shell to form a tube pass for steam flow and condensation.

7. The steam condensate treatment device of claim 1, wherein, The steam inlet is arranged at the middle position of the end of the front head assembly, which is used to guide the steam into the inner cavity of the front head assembly and then distribute it to the inside of the heat exchange pipes; the condensed water outlet is arranged below the end of the rear head assembly, which is used to guide out the condensed water formed by condensation from the heat exchange pipes, and the height of the condensed water outlet is lower than that of the steam inlet.

8. The steam condensate treatment device of claim 1, wherein, A plurality of mounting interfaces are arranged on the top of the side wall of the shell, which are used to mount temperature sensors, pressure gauges and safety valves respectively.

9. The steam condensate treatment device of claim 1, wherein, The cooling medium inlet is arranged at the lower part of the side wall of one end of the shell, the cooling medium outlet is arranged at the upper part of the side wall of the other end of the shell, and the shell and the heat exchange pipe assembly form a shell pass cooling channel for the flow of cooling medium.

10. The steam condensate treatment device of claim 1, wherein, Also included is a support base disposed at the bottom of the housing, including at least two arc-shaped support members.

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