Flange sealing condenser
By using a welded sealing ring and baffle design, the sealing problem of flange connections under high pressure and high temperature environments is solved, achieving zero leakage of the medium and efficient heat exchange, thus ensuring the stability and safety of the condenser.
Patent Information
- Application Number
- CN202422672337.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-02
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-02
AI Technical Summary
Existing flange connections cannot meet long-term stable sealing requirements under high pressure, high temperature or corrosive environments, leading to media leakage and unstable production environment.
The use of welded connection sealing rings ensures seamless connection between the connecting flange and the mating flange. Combined with the structural design of the baffle and heat exchange tubes, it promotes the heat exchange process. The precise positioning and stable connection of the sealing ring are achieved through the cooperation of the retaining ring and the positioning ring.
It achieves zero leakage of the medium under harsh operating conditions, ensuring production safety and stability, while improving heat exchange efficiency and sealing performance, and reducing the probability of collision and cutting damage to the condenser.
Smart Images
Figure CN223525627U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of chemical rectification, in particular to a flange sealing condenser. BACKGROUND
[0002] Flange connection is a commonly used connection mode in industrial equipment, especially in heat exchange equipment such as condensers of rectifying columns, and the sealing performance of the flange connection is crucial. At present, the flange connection is usually sealed by gaskets, bolts and the like, but in some high-pressure, high-temperature or corrosive environments, the traditional sealing mode may not meet the long-term stable sealing requirements. CONTENT OF THE UTILITY MODEL
[0003] In order to enable the condenser structure to be long-term stably sealed, the application provides a flange sealing condenser.
[0004] The flange sealing condenser provided by the application adopts the following technical scheme:
[0005] The flange sealing condenser comprises a shell, a front pipe box and a rear pipe box, the front pipe box and the rear pipe box are respectively arranged at two ends of the shell, a hot liquid inlet is arranged at a position close to the front pipe box on the top of the shell, a hot liquid outlet is arranged at a position close to the rear pipe box on the bottom of the shell, a cold liquid inlet is arranged at the bottom of the rear pipe box, a cold liquid outlet is arranged at the top of the front pipe box, connecting flanges are arranged at two ends of the shell, the front pipe box and the rear pipe box are both provided with matched flanges capable of cooperating with the connecting flanges at one end close to the shell, a tube plate is arranged between the connecting flange and the matched flange, baffles are fixed to the inner wall of the shell, heat exchange pipes are arranged between the baffles and the tube plate, a sealing ring is arranged outside the tube plate, the connecting flange, the tube plate and the matched flange are sequentially connected by bolts, and the two sides of the sealing ring are welded to the connecting flange and the matched flange respectively.
[0006] By adopting the above technical scheme, the sealing ring is introduced by welding, seamless butt joint between the connecting flange and the matched flange is realized, leakage of the medium in the condensation process is effectively prevented, the safety and stability of the production environment are ensured, and the condenser can maintain excellent performance under various harsh working conditions. In terms of heat exchange efficiency, the condenser forms a heat exchange process of the hot medium and the cold medium in the shell through the structure and layout of the heat exchange pipes and the arrangement of the baffles. The baffles promote multiple cross-contact of the hot and cold liquids, and further improve the heat exchange efficiency.
[0007] Optionally, the outer diameters of the connecting flange, the matched flange and the sealing ring are the same, and the outer diameter of the tube plate is smaller than the outer diameter of the sealing ring.
[0008] By adopting the technical scheme, the close fit between the sealing ring and the connecting flange and the counter flange can be ensured, the outer wall of the condenser can be kept with a uniform outer diameter, the steps on the surface of the condenser can be avoided, and the probability of collision of the condenser can be reduced.
[0009] Optionally, the sealing ring comprises a ring wall, the ring wall is provided with a check ring on both sides, the outer diameter of the check ring is the same as the inner diameter of the ring wall, the inner diameter of the check ring is the same as the outer diameter of the tube plate, and the check ring is sleeved on the tube plate.
[0010] By adopting the technical scheme, the check ring can further reinforce the connection between the sealing ring and the connecting flange and the counter flange, and the cooperation between the inner diameter of the check ring and the outer diameter of the tube plate can further position the sealing ring.
[0011] Optionally, the side of the check ring away from the ring wall is provided with a positioning ring, the inner diameter of the positioning ring is the same as the outer diameter of the tube plate, the outer diameter of the positioning ring is smaller than the outer diameter of the check ring, and the side of the connecting flange close to the counter flange and the side of the counter flange close to the connecting flange are both provided with a positioning groove matched with the positioning ring.
[0012] By adopting the technical scheme, the cooperation between the positioning ring and the positioning groove can further position the sealing ring, prevent deviation during installation, ensure the accuracy of the welding position, and fix the half sealing ring after cutting during disassembly.
[0013] Optionally, the outer edge of the ring wall is provided with a chamfer.
[0014] By adopting the technical scheme, the chamfer can reduce the stress concentration phenomenon that may occur during welding, improve the quality of the welded joint, and facilitate the smooth welding operation.
[0015] Optionally, the center position of the outer side wall of the ring wall is provided with a guide groove.
[0016] By adopting the technical scheme, the guide groove can guide the cutting operation, so that the welder can more easily control the cutting position, thereby avoiding cutting misalignment.
[0017] Optionally, the center position of the inner side wall of the ring wall is provided with a thickness-reducing groove.
[0018] By adopting the technical scheme, the thickness-reducing groove can reduce the wall thickness of the center position of the ring wall, thereby reducing the cutting depth, facilitating cutting, and avoiding damage to the tube plate caused by excessive cutting depth.
[0019] Optionally, the bottom of the shell is provided with a support.
[0020] By adopting the technical scheme, the support can provide stable support for the condenser, and ensure that the condenser will not be displaced due to external force in the use process.
[0021] To sum up, the present application has at least one of the following beneficial technical effects:
[0022] 1. The present application adopts a welding method to seal the gap between the flange and the matched flange through the sealing ring, replacing the traditional gasket sealing method, thereby providing more stable sealing performance in high pressure, high temperature or corrosive environment.
[0023] 2. The guide groove and the thickness reduction groove provided in the sealing ring structure in the present application can provide a guiding effect in the subsequent cutting process, while reducing the wall thickness and the cutting depth, and play a protective role on the tube sheet. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 is a structural schematic diagram of a flange-sealed condenser provided by an embodiment of the present application;
[0025] Figure 2 is a structural schematic diagram of the internal structure of a flange-sealed condenser provided by an embodiment of the present application;
[0026] Figure 3 is a structural schematic diagram of a shell provided by an embodiment of the present application;
[0027] Figure 4 is a structural schematic diagram of a front tube box provided by an embodiment of the present application.
[0028] Marked 1 is a shell; 101 is a hot liquid inlet; 102 is a hot liquid outlet; 103 is a baffle; 2 is a front tube box; 201 is a cold liquid outlet; 3 is a rear tube box; 301 is a cold liquid inlet; 4 is a connecting flange; 5 is a matched flange; 6 is a tube sheet; 7 is a heat exchange pipe; 8 is a sealing ring; 801 is a ring wall; 802 is a check ring; 803 is a positioning ring; 804 is a guide groove; 805 is a thickness reduction groove; 9 is a positioning groove; and 10 is a support. DETAILED DESCRIPTION
[0029] The following will be described in detail in combination with the accompanying Figures 1-4 The present application will be further described in detail.
[0030] An embodiment of the present application discloses a flange-sealed condenser.
[0031] As Figure 1 and Figure 2As shown, the flange sealing condenser comprises a shell 1, a front tube box 2 and a rear tube box 3, the front tube box 2 and the rear tube box 3 are respectively arranged at both ends of the shell 1, a hot liquid inlet 101 is arranged at the top of the shell 1 close to the front tube box 2, a hot liquid outlet 102 is arranged at the bottom of the shell 1 close to the rear tube box 3, a cold liquid inlet 301 is arranged at the bottom of the rear tube box 3, a cold liquid outlet 201 is arranged at the top of the front tube box 2, and connecting flanges 4 are arranged at both ends of the shell 1, respectively, and the front tube box 2 and the rear tube box 3 are respectively provided with a pair of flanges 5 close to one end of the shell 1, which can be matched with the connecting flanges 4, and a tube plate 6 is arranged between the connecting flanges 4 and the pair of flanges 5, and baffles 103 are fixed to the inner wall of the shell 1, and heat exchange pipes 7 are arranged between the baffles 103 and the tube plate 6, and the tube plate 6 is sleeved with a sealing ring 8, and the connecting flanges 4, the tube plate 6 and the pair of flanges 5 are connected in sequence by bolts, and the sealing ring 8 is welded to the connecting flanges 4 and the pair of flanges 5 on both sides.
[0032] The sealing ring 8 connected by welding ensures the seamless joint between the connecting flanges 4 and the pair of flanges 5, effectively avoids the leakage of the medium in the condensation process, and guarantees the safety and stability of the production environment. This makes the condenser maintain its performance even in harsh working conditions. In terms of improving heat exchange efficiency, the structure and layout of the heat exchange pipes 7 of the condenser promote the heat exchange process of the hot medium and the cold medium in the shell 1. The arrangement of the baffles 103 further promotes the multiple cross-contact of the hot and cold fluids, thereby improving the heat exchange efficiency.
[0033] As shown in Figure 1 and Figure 2 In order to make the overall structure more compact, the outer diameters of the connecting flanges 4, the matching flanges and the sealing ring 8 are the same, and the outer diameter of the tube plate 6 is smaller than that of the sealing ring 8. By limiting the outer diameters of the three, the tight fit between the sealing ring 8 and the connecting flanges 4 and the pair of flanges 5 can be ensured, the outer wall of the condenser can maintain a uniform outer diameter, and the probability of collision of the condenser can be reduced.
[0034] As shown in Figure 2 Specifically, the sealing ring 8 comprises a ring wall 801, and a retainer 802 is arranged on both sides of the ring wall 801. The outer diameter of the retainer 802 matches the inner diameter of the ring wall 801, and the inner diameter of the retainer 802 is consistent with the outer diameter of the tube plate 6, so that the retainer 802 can be sleeved on the tube plate 6. The arrangement of the retainer 802 can further strengthen the connection stability between the sealing ring 8 and the connecting flanges 4 and the pair of flanges 5, and through the precise fit between the inner diameter of the retainer 802 and the outer diameter of the tube plate 6, the precise positioning of the sealing ring 8 is realized.
[0035] As shown in Figures 2-4As shown, the side of the blocking ring 802 away from the ring wall 801 is provided with a positioning ring 803, the inner diameter of the positioning ring 803 is the same as the outer diameter of the tube plate 6, the outer diameter of the positioning ring 803 is smaller than the outer diameter of the blocking ring 802, and the side of the connecting flange 4 close to the counterpart flange 5 and the side of the counterpart flange 5 close to the connecting flange 4 are both provided with a positioning groove 9 matched with the positioning ring 803. The cooperation of the positioning ring 803 and the positioning groove 9 can further position the sealing ring 8, prevent deviation during installation, and ensure the accuracy of the welding position, and at the same time, can also fix the cut half sealing ring 8 during disassembly.
[0036] The side of the blocking ring 802 away from the ring wall 801 is provided with a positioning ring 803, the inner diameter of the positioning ring 803 is the same as the outer diameter of the tube plate 6, and the outer diameter of the positioning ring 803 is smaller than the outer diameter of the blocking ring 802. The adjacent sides of the connecting flange 4 and the counterpart flange 5 are both provided with a positioning groove 9 matched with the positioning ring 803. The precise cooperation of the positioning ring 803 and the positioning groove 9 helps to further position the sealing ring 8, prevent deviation during installation, and ensure the accuracy of the welding position. In addition, this structure can also provide a fixing function for the cut half sealing ring 8 during disassembly.
[0037] As shown in Figure 2 The outer edge of the ring wall 801 is provided with a chamfer. The setting of the chamfer can reduce the stress concentration phenomenon that may occur during welding, improve the quality of the welded joint, and also facilitate the smooth progress of the welding operation.
[0038] As shown in Figure 2 Since the sealing ring 8 is connected by welding, it needs to be divided into two parts for disassembly in the subsequent disassembly process. In order to facilitate the cutting operation, a guide groove 804 is specially designed at the center position of the outer side of the ring wall 801, and a thickness-reducing groove 805 is provided at the center position of the inner side of the ring wall 801. The guide groove 804 provides guidance for the cutting operation, so that the welding technician can more accurately control the cutting point, thereby preventing cutting deviation. The thickness-reducing groove 805 reduces the cutting depth by reducing the thickness of the center part of the ring wall 801, simplifies the cutting process, and avoids damage to the tube plate 6 that may be caused by excessive cutting depth.
[0039] As shown in Figure 1 and Figure 2 The bottom of the shell 1 is provided with a support 10. The support 10 can provide stable support for the condenser, ensuring that it will not be displaced due to external forces during use.
[0040] The implementation principle of the flange sealing condenser according to an embodiment of the present application is as follows:
[0041] When installing, the tube sheet 6 and the heat exchange tube 7 are matched with the baffle 103 in the shell 1, then the sealing ring 8 is sleeved on the outside of the tube sheet 6, and the positioning ring 803 is matched with the positioning groove 9 respectively. After the preliminary positioning is completed, the bolts are sequentially threaded through the holes on the connecting flange 4, the tube sheet 6 and the matched flange 5, or the bolts are sequentially threaded through the holes on the matched flange 5, the tube sheet 6 and the connecting flange 4 in reverse, so as to tightly connect the shell 1 with the tube sheet 6 and the front tube box 2 or the rear tube box 3.
[0042] When disassembling, the electric saw is aligned with the guide groove 804, the sealing ring 8 is divided into two along the guide groove 804, then the bolts are unscrewed, and the shell 1, the tube sheet 6 and the front tube box 2 or the rear tube box 3 are separated from each other. Then the electric heat shears are used for disassembling and welding, or the hydraulic clamp is used for destructive disassembling of the half sealing ring 8 to complete the disassembling and welding.
[0043] After the disassembling and welding is completed, the residual welding material is cleaned, and the flange surface is polished, so as to be prepared for recycling.
[0044] The above are the preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape and principle of the present application should be covered in the protection scope of the present application.
Claims
1. A flange seal condenser characterized by, The application relates to a heat exchanger, which comprises a shell (1), a front tube box (2) and a rear tube box (3), the front tube box (2) and the rear tube box (3) are arranged at two ends of the shell (1) respectively, a hot liquid inlet (101) is arranged at a position close to the front tube box (2) on the top of the shell (1), a hot liquid outlet (102) is arranged at a position close to the rear tube box (3) on the bottom of the shell (1), a cold liquid inlet (301) is arranged on the bottom of the rear tube box (3), a cold liquid outlet (201) is arranged on the top of the front tube box (2), connecting flanges (4) are arranged at two ends of the shell (1) respectively, a matching flange (5) capable of matching the connecting flange (4) is arranged on one end of the front tube box (2) and the rear tube box (3) close to the shell (1), a tube plate (6) is arranged between the connecting flange (4) and the matching flange (5), a baffle (103) is fixed to the inner wall of the shell (1), heat exchange tubes (7) are arranged between the baffle (103) and the tube plate (6), a sealing ring (8) is arranged on the tube plate (6), the connecting flange (4), the tube plate (6) and the matching flange (5) are sequentially connected through bolts, and the sealing ring (8) is welded to the connecting flange (4) and the matching flange (5) on both sides. The outer diameters of the connecting flange (4), the matching flange and the sealing ring (8) are the same, and the outer diameter of the tube plate (6) is smaller than the outer diameter of the sealing ring (8).
2. The flange seal condenser of claim 1, wherein, The sealing ring (8) comprises a ring wall (801), the ring wall (801) is provided with a check ring (802) on both sides, the outer diameter of the check ring (802) is the same as the inner diameter of the ring wall (801), the inner diameter of the check ring (802) is the same as the outer diameter of the tube plate (6), and the check ring (802) is sleeved on the tube plate (6).
3. The flange seal condenser of claim 2, wherein, A positioning ring (803) is arranged on the side of the check ring (802) away from the ring wall (801), the inner diameter of the positioning ring (803) is the same as the outer diameter of the tube plate (6), the outer diameter of the positioning ring (803) is smaller than the outer diameter of the check ring (802), the connecting flange (4) is provided with a positioning groove (9) matched with the positioning ring (803) on the side close to the matching flange (5), and the matching flange (5) is provided with a positioning groove (9) matched with the positioning ring (803) on the side close to the connecting flange (4).
4. The flange seal condenser of claim 3, wherein, The outer edge of the ring wall (801) is provided with a chamfer.
5. The flange seal condenser of claim 3, wherein, A guide groove (804) is arranged at the center position of the outer side wall of the ring wall (801).
6. The flange seal condenser of claim 3, wherein, A thickness-reducing groove (805) is arranged at the center position of the inner side wall of the ring wall (801).
7. The flange seal condenser of claim 6, wherein, A support (10) is arranged on the bottom of the shell (1).
8. The flange seal condenser of claim 1, wherein,