Heat exchange condenser pipe
By installing baffles and mounting components inside the condenser tube, the problem of insufficient airflow exchange inside the condenser tube is solved, the heat exchange efficiency is improved, and the demister is stably fixed, thus achieving smooth airflow and efficient demister removal.
Patent Information
- Application Number
- CN202422432279.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-10-09
AI Technical Summary
Insufficient exchange of airflow between the condenser tube and the tube wall results in low heat exchange efficiency, and the unstable fixing of the demister affects the smooth flow of airflow.
A flow-dispersing component and mounting assembly are installed inside the condenser tube, including an outer mesh plug, a axial tie rod, a guide vane or spiral wire, and a wire mesh. These components ensure that the airflow is evenly distributed inside the tube and fully exchanges with the tube wall, and stably fix the wire mesh.
It improves heat exchange efficiency, ensures smooth airflow, stabilizes the demister, reduces wind resistance, and enhances the overall performance of the condenser tube.
Smart Images
Figure CN223550978U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a heat exchange condenser tube, belonging to the technical field of heat exchange condensation equipment. Background Technology
[0002] In alkylation waste acid treatment processes and acid gas treatment processes in petrochemical, coking, and coal chemical plants, the produced sulfur trioxide gas comes into contact with water vapor and undergoes a hydration reaction to produce sulfuric acid: SO3 + H2O → H2SO4. Acid mist emissions have a significant impact, and the acid condenser is one of the key pieces of equipment in wet acid production processes. It is generally a vertical or horizontal shell-and-tube heat exchanger. Quartz heat exchange condenser tubes are the core component of the acid condenser, possessing excellent acid resistance and high-temperature resistance.
[0003] Heat exchange condenser tubes utilize the temperature difference between the gas inside and outside the tube to allow acid, alkali, and salt mist contained in the high-temperature gas to exchange heat with the low-temperature gas through the tube wall. During the cooling process, the mist condenses into droplets on the tube wall and flows downwards to collect the useful components in the high-temperature gas and / or remove harmful substances from the high-temperature gas.
[0004] The flow of gas inside a condenser tube is generally high-speed due to pressure (positive or negative). It can be that low-temperature gas flows inside the tube and high-temperature gas containing chemical substances flows outside the tube, or vice versa.
[0005] When a high-temperature gas containing chemical substances flows inside the condenser tube and a low-temperature gas flows outside the tube, demisters made of fine wire mesh are often installed at both ends of the condenser tube to filter out a large amount of mist carried in the high-temperature gas.
[0006] The shortcomings of existing technology are:
[0007] When air flows through the condenser tube, the airflow close to the outer periphery of the tube wall and the airflow near the axis cannot be fully exchanged. As a result, when the gas in the tube passes through, not all of the gas has the opportunity to flow close to the wall for heat exchange, which reduces the efficiency of heat exchange and condensation. This leads to the heat exchanger having to be made large, requiring a large amount of gas flow to meet the heat exchange demand, which increases the cost.
[0008] Because the high-speed airflow inside the pipe exerts a significant impact on the demister, the issue of fixing the demister has not been adequately addressed. This is mainly because the fixing components, such as radially arranged baffles including bolts, are large in size and significantly impede airflow, hindering its smooth passage. Utility Model Content
[0009] The main technical problem this invention aims to solve is: how to make the airflow inside the condenser tube exchange more fully with the tube wall, so as to improve the heat exchange condensation efficiency.
[0010] To address the above problems, the technical solution proposed by this utility model is as follows:
[0011] A heat exchange condenser tube includes a tube body, a flow disruptor installed inside the tube body for mixing the axial region portion and the peripheral portion of the airflow inside the tube, and a mounting assembly for mounting the flow disruptor on the tube body.
[0012] The mounting assembly includes two outer mesh plugs and a central tie rod. Each outer mesh plug has an outer limiting ring and a mesh interwoven in the inner hole of the outer limiting ring. At the center of the mesh is a positioning sleeve that is welded and fixed to the mesh and can pass through the central tie rod. One side of the outer limiting ring has an annular groove that allows the end wall of the tube body to be inserted. Both ends of the central tie rod have external threads and are equipped with external nuts. In application, the two outer mesh plugs are fastened to the two ends of the central tie rod facing each other. The two ends of the central tie rod pass through the positioning sleeves of the two outer mesh plugs respectively. The two outer mesh plugs are pulled closer and fixed by axially screwing in the external nuts at both ends.
[0013] The turbulence-inducing component is a flow guide blade, the inner end of which is fixed to the shaft tie rod, and the outer end extends in a spiral shape along the airflow direction and the inner wall of the pipe body.
[0014] The flow-disrupting element is a spiral wire fitted inside the pipe body, with both ends of the spiral wire abutting against the mesh of the outer mesh plug.
[0015] It also includes two cylindrical wire mesh clusters for demisting, each wire mesh cluster having a rod hole along its axis through which a central tie rod can pass. The two wire mesh clusters are installed at both ends inside the tube body, and the two ends of the central tie rod pass through the rod holes of the two wire mesh clusters respectively.
[0016] The installation assembly also includes two inner mesh plugs and two inner nuts. The inner mesh plugs have inner limiting rings and a mesh interwoven in the inner hole of the inner limiting rings. At the center of the mesh is a positioning sleeve that is welded and fixed to the mesh and can pass through the axial tie rod. The inner mesh plugs are fitted onto the axial tie rod at the inner end of the wire mesh through the positioning sleeves and are screwed outward by the inner nuts to tighten the wire mesh.
[0017] The barrier net is installed inside the outer mesh plug, the outer limiting ring and the barrier net form an outer space, and the outer nut is located inside the outer space. Beneficial effects
[0018] 1. While ensuring smooth airflow within the pipe body, the airflow direction is disrupted to give all the gas inside the pipe the opportunity to contact the pipe wall for heat exchange.
[0019] 2. It can stably fix the wire mesh that plays a defogging role, and the fixing part is a wire mesh with extremely low wind resistance. Attached Figure Description
[0020] Figure 1This is a three-dimensional schematic diagram of the condenser tube described in Example 1;
[0021] Figure 2 for Figure 1 A diagram illustrating the disassembly process;
[0022] Figure 3 This is a cross-sectional schematic diagram of the outer mesh plug described in Embodiment 1;
[0023] Figure 4 This is a plan view of the condenser tube described in Example 2;
[0024] Figure 5 This is a three-dimensional schematic diagram of the condenser tube described in Example 3, with the guide vane as a flow-disrupting element;
[0025] Figure 6 for Figure 5 A diagram illustrating the disassembly process;
[0026] Figure 7 This is a three-dimensional schematic diagram of the condenser tube described in Example 3, with a spiral wire as the flow-disrupting element.
[0027] In the diagram: 1. Pipe body; 2. Guide blade; 3. Spiral wire; 4. Wire mesh; 401. Rod hole; 5. Outer mesh plug; 501. Outer limiting ring; 502. Annular groove; 503. Outer space; 6. Inner mesh plug; 601. Inner limiting ring; 7. Shaft tie rod; 8. Barrier net; 9. Positioning sleeve; 10. Outer nut; 11. Inner nut. Detailed Implementation
[0028] The present invention will be further described below with reference to the accompanying drawings: Example 1
[0029] like Figure 1 As shown in Figure 3, a heat exchange condenser tube includes a tube body 1, a flow disruptor installed inside the tube body 1 to mix the axial region and the peripheral region of the airflow inside the tube, and a mounting assembly for mounting the flow disruptor on the tube body 1. In this way, the airflow inside the tube body 1 can have the opportunity to contact the inner wall of the tube, thereby exchanging heat with the airflow outside the tube body 1 that has a temperature difference, thus improving the heat exchange efficiency of the condenser tube.
[0030] The aforementioned installation assembly includes two outer mesh plugs 5 and a central tie rod 7. The outer mesh plug 5 has an outer limiting ring 501 and a mesh 8 interwoven in the inner hole of the outer limiting ring 501. At the center of the mesh 8, there is a positioning sleeve 9 that is welded and fixed to the mesh 8 and can pass through the central tie rod 7. One side of the outer limiting ring 501 has an annular groove 502 that allows the end wall of the tube body 1 to be inserted. The central tie rod 7 has external threads at both ends and is equipped with an outer nut 10. In application, the two outer mesh plugs 5 are fastened to the two ends of the central tie rod 7 facing each other. The two ends of the central tie rod 7 pass through the positioning sleeves 9 of the two outer mesh plugs 5 respectively. The two outer mesh plugs 5 are pulled closer and fixed by axially screwing in the outer nuts at both ends. When the outer mesh plug 5 at the left end is subjected to the force of the airflow and tends to come off to the left, the outer mesh plug 5 at the right end will be pulled back by the central tie rod 7.
[0031] The turbulence-disrupting component is a guide vane 2. The inner end of the guide vane 2 is fixed on the shaft tie rod 7, and the outer end extends in a spiral shape along the airflow direction and the inner wall direction of the tube body 1. This causes the gas around the shaft tie rod 7 flowing along the airflow direction to impact the tube wall of the tube body 1 in a certain swirling flow when it encounters the guide vane 2, thereby achieving the mixing of the gas inside the tube.
[0032] The barrier net 8 is installed inside the outer net plug 5. The outer limiting ring 501 and the barrier net 8 form an outer space 503. The outer nut 10 is located inside the outer space 503.
[0033] Preferably, the condenser tube is made of glass. Example 2
[0034] like Figure 4 As shown, the difference between this embodiment and the first embodiment is that the turbulence element is a spiral wire 3 fitted inside the pipe body 1. The two ends of the spiral wire 3 abut against the barrier 8 of the outer mesh plug 5. The high-speed airflow inside the pipe is guided by the spiral wire 3, which can also play a role in forming a vortex. Example 3
[0035] like Figure 5 As shown in Figure 7, the difference between this embodiment and the one described above is that the heat exchange condenser tube also includes two cylindrical wire mesh clusters 4 for demisting. The wire mesh clusters 4 are provided with rod holes 401 along the axis that can pass through the axial pull rod 7. The two wire mesh clusters 4 are installed at both ends inside the tube body 1. The two ends of the axial pull rod 7 pass through the rod holes 401 of the two wire mesh clusters 4 respectively. The wire mesh clusters 4 are blocked by the outer mesh plugs at both ends to prevent them from rushing out from both ends of the tube body 1 under the action of airflow.
[0036] The mounting assembly also includes two inner mesh plugs 6 and two inner nuts 11. The inner mesh plug 6 has an inner limiting ring 601 and a mesh 8 interwoven in the inner hole of the inner limiting ring 601. At the center of the mesh 8, there is a positioning sleeve 9 that is welded and fixed to the mesh 8 and can pass through the shaft tie rod 7. The inner mesh plug 6 is fitted onto the shaft tie rod 7 at the inner end of the wire mesh 4 through the positioning sleeve 9 and is screwed outward by the inner nuts 11 to press against the wire mesh 4, so as to prevent the wire mesh 4 at both ends from sliding towards the middle of the tube body 1.
[0037] Figure 5 and Figure 7 The following two scenarios are shown: one using the guide vane 2 as a flow disruptor and the other using the spiral wire 3 as a flow disruptor.
[0038] The above embodiments are only used to describe the present invention more clearly, and should not be regarded as limiting the scope of protection covered by the present invention. Any equivalent modifications should be regarded as falling within the scope of protection covered by the present invention.
Claims
1. A heat exchange condenser tube, comprising a tube body (1), characterized in that: It also includes a flow disruptor installed inside the pipe body (1) to mix the axial region of the airflow inside the pipe with the peripheral region, and an installation assembly for mounting the flow disruptor on the pipe body (1); the installation assembly includes two outer mesh plugs (5) and a axial tie rod (7), the outer mesh plugs (5) having an outer limiting ring (501) and a mesh (8) interwoven in the inner hole of the outer limiting ring (501), and at the center of the mesh (8) is a welded and fixed part that can pass through the axial tie rod (7). 7) The positioning sleeve (9) has an annular groove (502) on one side of the outer limiting ring (501) that allows the end wall of the tube body (1) to be inserted. The two ends of the shaft tie rod (7) have external threads and are equipped with external nuts (10). In application, the two outer mesh plugs (5) are fastened to the two ends of the shaft tie rod (7). The two ends of the shaft tie rod (7) pass through the positioning sleeve (9) of the two outer mesh plugs (5) respectively. The two outer mesh plugs (5) are pulled closer and fixed by the axial screwing of the external nuts at both ends.
2. The heat exchange condenser tube according to claim 1, characterized in that: The turbulence-causing component is a guide vane (2), the inner end of which is fixed on the shaft tie rod (7), and the outer end extends in a spiral shape along the airflow direction and the inner wall direction of the tube body (1).
3. The heat exchange condenser tube according to claim 1, characterized in that: The turbulence-disrupting component is a spiral wire fitted inside the pipe body (1), with both ends of the spiral wire (3) abutting against the mesh (8) of the outer mesh plug (5).
4. The heat exchange condenser tube according to claim 2, characterized in that: It also includes two cylindrical wire mesh clusters (4) for demisting. The wire mesh clusters (4) are provided with rod holes (401) along the axis that can pass through the axial tie rod (7). The two wire mesh clusters (4) are installed at both ends inside the tube body (1). The two ends of the axial tie rod (7) pass through the rod holes (401) of the two wire mesh clusters (4) respectively.
5. The heat exchange condenser tube according to claim 4, characterized in that: The installation assembly also includes two inner mesh plugs (6) and two inner nuts (11). The inner mesh plugs (6) have an inner limiting ring (601) and a mesh (8) interwoven in the inner hole of the inner limiting ring (601). At the center of the mesh (8) is a positioning sleeve (9) that is welded and fixed to the mesh (8) and can pass through the axial tie rod (7). The inner mesh plugs (6) are fitted onto the axial tie rod (7) at the inner end of the wire mesh (4) through the positioning sleeve (9) and are screwed outward by the inner nuts (11) to press against the wire mesh (4).
6. The heat exchange condenser tube according to claim 4, characterized in that: The barrier net (8) is installed inside the outer net plug (5), the outer limiting ring (501) and the barrier net (8) form an outer space (503), and the outer nut (10) is located in the outer space (503).