Condenser convenient to disassemble, inspect and maintain

Abstract

The utility model relates to the field of condensing equipment, in particular to a condenser convenient to disassemble, inspect and maintain. Comprising a barrel, a flange cover and a heat exchange tube, and a flange is arranged at the top of the barrel; a three-way valve is arranged at the bottom of the barrel; the flange cover is in sealing connection with the flange through a bolt, and a cooling medium outlet is formed in the flange cover; the heat exchange tube downwards extends to the bottom in a winding and circling manner along one path of the internal space of the barrel; the heat exchange tube comprises a plurality of horizontally arranged straight tubes and a plurality of elbows, the straight tubes are arranged in the barrel in a layer-by-layer stacking mode, and the straight tubes are sequentially connected end to end through the elbows; and the thermal medium inlet, the thermal medium outlet and the elbow are arranged on the outer side of the barrel. According to the utility model, the maintenance work can be quickly carried out without the need of disassembling complex structures such as a cylinder body and the like in a traditional design, so that the maintenance time is greatly shortened, the shutdown time of equipment is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of condensing equipment, specifically to a condenser that is easy to disassemble, inspect, and maintain. Background Technology

[0002] Condensers play a crucial role in numerous industrial sectors. Typically, condensers employ a common structural design: the shell side (within the cylinder) serves as the flow channel for the cooling medium, which circulates and carries away heat; the tube side (inside the heat exchange tubes) is where the medium to be condensed flows through. The condenser cylinder contains a dense array of annular heat exchange tubes and other related components. During operation, heat is transferred via thermal conduction from the medium to the heat exchange tubes, and then from the heat exchange tubes to the cooling medium in the shell side, thus achieving the condensation of the medium.

[0003] This type of condenser typically uses welding to connect the two sides of the cylinder, which offers certain advantages. On the one hand, the structure is relatively simple and straightforward, making it easy to design and manufacture; on the other hand, the numerous annular heat exchange tubes greatly expand the heat exchange area, efficiently meeting the heat exchange needs of industrial production and ensuring the smooth progress of the production process.

[0004] However, this condenser structure also has several significant drawbacks. Because the annular heat exchange tubes are subjected to high-speed flow and scouring of the condensing medium over a long period, especially at the apex where the stress is most concentrated, wear easily occurs over time, leading to leaks. Once a leak occurs, it is difficult to detect promptly due to its relatively concealed internal location. In actual operation, the leaked medium mixes with the boiler water, causing boiler water test indicators to deviate subtly from normal ranges. Operators often make incorrect judgments based on these abnormal indicators, interfering with normal production operations. Moreover, when a leak occurs, the welded connection of the cylinder makes disassembly extremely complex and cumbersome, consuming significant manpower, resources, and time, and requiring high-quality maintenance space and equipment, making maintenance work difficult to carry out smoothly. Even if it is determined that damaged parts need to be replaced, the high replacement costs place a heavy economic burden on the company. Utility Model Content

[0005] This invention provides a condenser that is easy to disassemble and inspect, aiming to solve the problem that the existing condenser inspection and maintenance process is complicated and cumbersome, and that it is difficult to replace even if the location of the damaged elbow is determined.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] This utility model provides a condenser that is easy to disassemble and maintain, including a shell, a flange cover and heat exchange tubes. The top of the shell is open and a flange is provided on the top of the shell. A three-way valve is provided at the bottom of the shell. One outlet of the three-way valve is a drain port and the other outlet of the three-way valve is a cooling medium inlet.

[0008] The flange cover is connected to the flange by bolts for sealing, and the flange cover is provided with a cooling medium outlet;

[0009] The heat exchange tube meanders and spirals downwards along the interior space of the cylinder to the bottom. The top end of the heat exchange tube is the inlet of the heat medium, and the bottom end of the heat exchange tube is the outlet of the heat medium. The heat exchange tube includes several horizontally arranged straight tubes and several bends. The straight tubes are arranged in layers within the cylinder, and the straight tubes are connected end to end in sequence by several bends. The heat medium inlet, heat medium outlet, and bends are all located on the outside of the cylinder.

[0010] Furthermore, the cylinder is mounted on the ground via a base.

[0011] Furthermore, the connection between the cylinder and the heat exchange tube is welded.

[0012] Furthermore, a vent valve is also provided on the flange cover.

[0013] Furthermore, the heat exchange tube has ten layers of straight tubes, with two straight tubes in the top and bottom layers, and four straight tubes in each of the remaining layers.

[0014] The beneficial effects achieved by this utility model are as follows:

[0015] Firstly, the innovative flange connection at the top of the shell greatly facilitates the equipment's lifecycle management. When maintenance, repair, or component replacement is required, the easy disassembly of the flange connection allows operators to quickly open the top of the shell and directly inspect the internal heat exchange tubes. This allows for precise location of potential scaling, blockages, or wear issues, while simultaneously enabling efficient cleaning. This ensures the heat exchange tubes remain in optimal working condition, significantly extending the equipment's lifespan and reducing the risk of production interruptions due to decreased heat exchange efficiency.

[0016] Secondly, the installation of the elbow on the outside of the cylinder is another key advantage of this patent. On the one hand, when a leak unfortunately occurs at the elbow, because it is within the visible range outside the cylinder, operators can detect it immediately during routine inspections. This prevents a series of adverse reactions, such as media mixing and contamination, and abnormal system operating parameters, caused by the leak going undetected for a long time, effectively ensuring the stable operation of the entire production system. On the other hand, once a leak is detected, the maintenance team can easily approach the elbow without the need for the cumbersome disassembly of the cylinder and other complex structures required by traditional designs. This allows for rapid maintenance, significantly shortening maintenance time, reducing equipment downtime, and improving production efficiency. Moreover, thanks to the external installation layout, replacing the elbow is extremely simple; it only requires cutting it off and re-welding, greatly simplifying the maintenance process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional representation of the present invention. Figure 1 (The flange cover and flange are not fixed.)

[0019] Figure 2 This is a three-dimensional representation of the present invention. Figure 2 (The flange cover and flange are not fixed.)

[0020] Figure 3 This is the front view of this utility model.

[0021] Figure 4 This is a schematic diagram of the heat exchange tube and elbow structure of this utility model.

[0022] In the diagram, 10 is the condenser; 110 is the cylinder; 120 is the flange; 130 is the flange cover; 131 is the cooling medium outlet; 140 is the heat exchange tube; 141 is the heat medium inlet; 142 is the heat medium outlet; 143 is the straight pipe; 144 is the elbow; 150 is the three-way valve; 151 is the cooling medium inlet; and 152 is the drain outlet. Detailed Implementation

[0023] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0025] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] like Figures 1-3 As shown, this utility model provides a condenser 10 that is easy to disassemble and maintain, including a cylinder 110, a flange cover 130, and heat exchange tubes 140. The cylinder 110 is set on the ground by a base (not shown in the figure). The top of the cylinder 110 is open (that is, the top of the cylinder 110 does not have any kind of top cover or sealing plate structure, thus forming a cup-like structure with an open top). A flange 120 is provided on the top of the cylinder 110, and the flange cover 130 is connected to the flange 120 by bolts. A three-way valve 150 is provided at the bottom of the cylinder 110. One outlet of the three-way valve 150 is a drain port 152, and the other outlet of the three-way valve 150 is a cooling medium inlet 151. The cooling medium inlet 151 is connected to the supply end of the cooling medium circulation system.

[0027] The flange cover 130 is provided with a cooling medium outlet 131, which is connected to the recovery end of the cooling medium circulation system. The cooling medium enters the cylinder 110 from the cooling medium inlet 151, absorbs heat, and then re-enters the cooling medium circulation system from the cooling medium outlet 131 at the top of the cylinder 110.

[0028] like Figure 4 As shown, the heat exchange tube 140 meanders downwards along the interior space of the cylinder 110 to the bottom. The top end of the heat exchange tube 140 is the heat medium inlet 141, and the bottom end is the heat medium outlet 142. The heat exchange tube 140 includes several horizontally arranged straight tubes 143 and several bends 144. The straight tubes 143 are arranged in a stacked manner within the cylinder 110, and each layer of straight tubes 143 maintains a uniform spacing to ensure uniformity and efficiency of heat exchange. At the same time, the straight tubes 143 are connected end to end by several bends 144, thereby realizing the continuous flow of the condensed medium within the heat exchange tube 140 and completing the heat transfer process. The heat medium inlet 141, heat medium outlet 142, and bends 144 are all located on the outside of the cylinder 110. This layout design facilitates the access and discharge of the condensed medium. On the other hand, when it is necessary to inspect, maintain or replace these key parts, the operators can operate conveniently without having to go deep into the cylinder 110, which greatly improves the convenience and efficiency of equipment maintenance.

[0029] The connection between the cylinder 110 and the heat exchange tube 140 is welded to ensure a seal.

[0030] The cooling medium circulation system is an existing system in the chemical plant. Its main function is to continuously provide cooling medium to the condenser 10 to absorb the heat released by the condensed medium and recover the cooling medium after heat absorption. The cooling medium circulation system is existing technology, and the specific technical details will not be elaborated here.

[0031] Furthermore, a vent valve (not shown in the figure) is also provided on the flange cover 130. The vent valve is used to discharge excess gas or liquid in the cylinder 110 to ensure that the present invention can operate safely and stably.

[0032] Furthermore, the heat exchange tube 140 has ten layers of straight tubes 143, with two straight tubes 143 in the top and bottom layers, and four straight tubes 143 in each of the remaining layers; the spacing between layers is the same, and the spacing between adjacent straight tubes 143 in the same layer is also the same.

[0033] During the operation of the condenser 10, the cold and hot media flow along specific paths to achieve efficient heat exchange and condensation.

[0034] First, the cooling medium begins its heat exchange journey. The source end of the cooling medium is connected to a specially designed cooling medium inlet 151 at the bottom of the cylinder 110. Driven by external power (such as a pump), the cooling medium continuously flows into the cylinder 110. Upon entering the cylinder 110, the cooling medium quickly comes into full contact with the meandering, spiraling heat exchange tubes 140 inside. Because the heat exchange tubes 140 contain a high-temperature condensing medium, a significant temperature difference exists between the two. According to the principle of heat transfer, heat is transferred from the hot medium inside the heat exchange tubes 140 through the tube walls to the cooling medium. During this process, the cooling medium continuously absorbs heat, and its own temperature gradually increases.

[0035] After absorbing heat, the cooling medium flows to the cooling medium outlet 131 located on the flange cover 130. As an important connecting component of the cylinder 110, the flange cover 130 has a carefully designed cooling medium outlet 131 that provides a convenient channel for the discharge of the cooling medium. The cooling medium is thus smoothly discharged from the cylinder 110, carrying the absorbed heat into the subsequent cooling cycle, ready to participate in the heat exchange process again.

[0036] Simultaneously, the condensed medium also begins its own process. The condensed medium's delivery pipe is connected to the hot medium inlet 141 located on the upper side of the cylinder 110. Driven by corresponding pressure, the condensed medium rushes into the cylinder 110. Upon entering the cylinder 110, the condensed medium flows slowly along the pre-designed heat exchange tube 140 in a serpentine trajectory. This serpentine flow greatly extends the residence time of the condensed medium within the cylinder 110, allowing it to fully contact the tube wall of the heat exchange tube 140, thereby effectively transferring its heat to the tube wall and the cooling medium outside the tube.

[0037] As heat is continuously dissipated, the temperature of the condensed medium gradually decreases until it reaches a condensed state. After completing the heat exchange, the condensed medium continues to flow along the heat exchange tube 140 until it reaches the hot medium outlet 142 located on the bottom side of the cylinder 110, and then smoothly exits the cylinder 110, completing the entire condensation process.

[0038] The entire operation of the condenser 10, through the orderly flow and heat exchange of the cold and hot media, achieves efficient condensation of the condensed media, meeting various needs in industrial production.

[0039] During the long-term operation of this patented equipment, the elbow 144 plays an indispensable role as a key connecting component of the heat exchange tube 140, while its layout design greatly facilitates the maintenance and repair of the equipment.

[0040] After prolonged continuous operation, the elbow 144 may experience wear, cracks, or even breakage due to factors such as thermal expansion and contraction and media erosion. Thanks to the ingenious design of elbow 144 being specifically positioned on the outside of the cylinder 110, staff can easily observe its real-time status during routine equipment inspections. Any abnormality at elbow 144, whether surface corrosion or minor leaks, will not escape the keen eyes of the staff, ensuring timely detection of the problem.

[0041] Once elbow 144 is found to be damaged, the maintenance procedure can be initiated immediately. First, to ensure the safety of the maintenance operation and to avoid pollution or other adverse effects caused by media leakage, the entire cooling process of condenser 10 needs to be shut down. After the system is shut down, the remaining condensed media in the cylinder 110 must be emptied completely to create a safe and undisturbed environment for subsequent maintenance work.

[0042] After completing the above preparations, maintenance personnel can use specialized cutting tools to precisely cut the damaged elbow 144 from the heat exchange tube 140 system. Since the elbow 144 is located outside the cylinder 110, the operating space is relatively open, allowing for efficient and smooth cutting. After removing the damaged elbow 144, immediately align the pre-prepared intact elbow 144 with the connection point and, using skilled welding techniques, firmly weld the new elbow 144 to its original position, ensuring a tight seal and a stable connection.

[0043] The entire inspection and maintenance process is completed in one go. Compared with traditional equipment, which requires disassembling complex structures and overcoming many space limitations when repairing similar parts, this patented equipment design greatly shortens the maintenance time, enabling the equipment to resume normal operation in a short time. This effectively reduces downtime and production losses caused by equipment failure and ensures the continuity and stability of the production process.

[0044] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A condenser (10) which is easily disassembled for inspection and repair, characterized by: The application relates to a heat exchange device, which comprises a cylinder (110), a flange cover (130) and a heat exchange pipe (140), the top of the cylinder (110) is open, the top of the cylinder (110) is provided with a flange (120), the bottom of the cylinder (110) is provided with a three-way valve (150), one outlet of the three-way valve (150) is a blowdown port (152), and the other outlet of the three-way valve (150) is a cooling medium inlet (151). The flange cover (130) is connected with the flange (120) through bolt sealing, and the flange cover (130) is provided with a cooling medium outlet (131). The heat exchange pipe (140) extends downwards along the internal space of the cylinder (110) in a winding and coiled manner to the bottom, the top end of the heat exchange pipe (140) is a hot medium inlet (141), the bottom end of the heat exchange pipe (140) is a hot medium outlet (142), the heat exchange pipe (140) comprises a plurality of horizontally arranged straight pipes (143) and a plurality of elbows (144), the straight pipes (143) are arranged in a layer-by-layer stacking mode in the cylinder (110), and the straight pipes (143) are sequentially connected in a head-to-tail mode through the elbows (144); the hot medium inlet (141), the hot medium outlet (142) and the elbow (144) are arranged outside the cylinder (110).

2. A condenser (10) for easy disassembly, repair and maintenance according to claim 1, characterized in that: The cylinder (110) is arranged on the ground through a base.

3. A condenser (10) for easy disassembly, repair and maintenance according to claim 1, characterized in that: The connection between the cylinder (110) and the heat exchange pipe (140) is welded.

4. A condenser (10) for easy disassembly, repair and maintenance according to claim 1, characterized in that: The flange cover (130) is further provided with an emptying valve.

5. A condenser (10) for easy disassembly, repair and maintenance according to claim 1, characterized in that: The straight pipes (143) of the heat exchange pipe (140) have ten layers, the uppermost layer and the lowermost layer each have two straight pipes (143), and the remaining layers each have four straight pipes (143).

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