Catalyst supporting structure
By adding spring support members in the heat exchange tube to form a conical structure with a narrow upper and wide upper lower surface, the leakage problem of catalyst in the gap between the wire mesh and the tube plate is solved, and the effective sealing of the catalyst is achieved.
Patent Information
- Application Number
- CN202422145343.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-03
AI Technical Summary
In the prior art, catalysts are prone to leak in the gap between the wire mesh and the sealing surface of the tube sheet, resulting in catalyst loss.
A spring support is added at the bottom of the heat exchange tube, including a support part, a vertical part and a spiral body part. The spiral body part forms a conical structure with a narrow upper and wide upper lower part. The catalyst is located above the spiral body part and is sealed through the spring support part.
Effectively prevent the catalyst from leaking from the gap between the wire mesh and the tube plate sealing surface, improving the catalyst sealing effect.
Smart Images
Figure CN223166001U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of heat exchangers, in particular to a catalyst support structure.
Background Art
[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. Heat exchangers play an important role in many industrial productions such as chemical engineering, petroleum, power, food and others. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators, reboilers, etc. A shell-and-tube heat exchanger mainly consists of a shell, a tube bundle, tube sheets, tube heads and other parts. Parallel tube bundles or spiral tubes are installed inside the shell, and both ends of the tube bundle are fixed on the tube sheets. For the two fluids exchanging heat in the shell-and-tube heat exchanger, one flows inside the tubes, and its path is called the tube side; the other flows outside the tubes, and its path is called the shell side.
[0003] Please refer to Figure 1 and Figure 2 As shown, it discloses a catalyst support structure in the prior art, including a tube sheet 1` and a plurality of heat exchange tubes 2`. The free ends of the heat exchange tubes 2` are welded in the heat exchange tube holes of the tube sheet 1`. A layer of wire mesh 3` is laid below the tube sheet 1`. A grid pressing plate 4` is arranged below the wire mesh 3`. The grid pressing plate 4` is connected to the tube sheet 1` through a plurality of fixing members 5`. Catalysts 6` are arranged inside the heat exchange tubes 2`. The defect of this catalyst support structure is that: in the actual production process, we found that the gap between the wire mesh and the sealing surface of the tube sheet is difficult to control. Therefore, during use, the catalysts in the heat exchange tubes often leak from the gap between the wire mesh and the sealing surface of the tube sheet.
[0004] Therefore, it is necessary to provide a catalyst support structure to solve the above technical problems.
Content of the Utility Model
[0005] To solve the above problems, the purpose of the utility model is to provide a catalyst support structure that can prevent catalyst leakage.
[0006] To achieve the above object, the technical solution adopted by the present utility model is as follows: A catalyst support structure, comprising: a lower tube sheet and a plurality of heat exchange tubes. The lower tube sheet is provided with a plurality of heat exchange tube holes, and the free ends below the heat exchange tubes are welded into the heat exchange tube holes of the lower tube sheet. A lower grid pressing plate is provided below the lower tube sheet, a wire mesh is provided between the lower grid pressing plate and the lower tube sheet, and a spring support member is provided at the bottom position inside the heat exchange tube. The spring support member includes: a support portion, a vertical portion, and a spiral body portion. The support portion supports on the wire mesh, the vertical portion is connected between the support portion and the spiral body portion, and the diameter of the spiral body portion is gradually increased from top to bottom so that the spiral body portion forms a cone structure with a narrow top and a wide bottom. A catalyst is provided inside the heat exchange tube, and the catalyst is located above the spiral body portion.
[0007] Preferably, a catalyst support structure in the present utility model is further provided as: The catalyst is a catalytic sphere, and the distance between every two adjacent layers of the spiral body portion is less than the diameter of the catalytic sphere.
[0008] Preferably, a catalyst support structure in the present utility model is further provided as: A plurality of clamping studs are welded to the bottom of the lower tube sheet, sleeves are welded to the lower grid pressing plate, and the clamping studs pass through the sleeves and are fixed by nuts and gaskets.
[0009] Preferably, a catalyst support structure in the present utility model is further provided as: The wire mesh is provided with holes at the positions corresponding to the clamping studs.
[0010] Preferably, a catalyst support structure in the present utility model is further provided as: The lower grid pressing plate, the spring support member, the clamping studs, the sleeves, the nuts, and the gaskets are all made of stainless steel materials.
[0011] Preferably, a catalyst support structure in the present utility model is further provided as: A plurality of first connecting members are welded to the outer edge of the lower grid pressing plate, a plurality of second connecting members are welded to the inner wall of the cylinder body, and the first connecting members and the second connecting members are connected by fixing members.
[0012] Preferably, a catalyst support structure in the present utility model is further provided as: The fixing members are bolts and nuts.
[0013] Compared with the prior art, the present utility model has the following beneficial effects: Compared with the prior art, after improvement, the present utility model adds a spring support member at the bottom position inside the heat exchange tube. By adding the spring support member, the catalyst is sealed inside the heat exchange tube, thus solving the technical problem of catalyst leakage from the gap between the wire mesh and the sealing surface of the tube sheet in the prior art.
Description of the Drawings
[0014] Figure 1 It is a schematic structural diagram of a catalyst support structure in the prior art.
[0015] Figure 2 is Figure 1 a partial enlarged view of location A in
[0016] Figure 3 It is a schematic structural diagram of the catalyst support structure in the present utility model.
[0017] Figure 4 is Figure 3 a partial enlarged view of location B in
[0018] Figure 5 It is a schematic structural diagram of the connection structure between the lower tube sheet and the lower grid pressing plate.
[0019] Figure 6 It is a schematic structural diagram of the welding structure between the lower grid pressing plate and the sleeve.
[0020] Figure 7 It is a schematic structural diagram of the spring support member in the present utility model.
[0021] Figure 1 and Figure 2 in: 1`, tube sheet; 2`, heat exchange tube; 3`, wire mesh; 4`, grid pressing plate; 5`, fixing member; 6`, catalyst.
[0022] Figures 3 to 7 in: 1, lower tube sheet; 2, heat exchange tube; 3, lower grid pressing plate; 4, wire mesh; 5, clamping stud; 6, sleeve; 7, nut; 8, gasket; 9, first connecting member; 10, cylinder body; 11, second connecting member; 12, fixing member; 13, spring support member; 130, support portion; 131, vertical portion; 132, spiral body portion; 14, catalyst.
Detailed implementation manners
[0023] The following further describes in detail a catalyst support structure according to the present utility model through specific embodiments.
[0024] Refer Figures 3 to 7As shown in the figure, a catalyst support structure includes: a lower tube sheet 1 and a plurality of heat exchange tubes 2. The lower tube sheet 1 is provided with a plurality of heat exchange tube holes. The free end below the heat exchange tube 2 is welded into the heat exchange tube hole of the lower tube sheet 1. A lower grid pressing plate 3 is provided below the lower tube sheet 1. A wire mesh 4 is provided between the lower grid pressing plate 3 and the lower tube sheet 1. A plurality of clamping studs 5 are welded to the bottom of the lower tube sheet 1. The wire mesh 4 is provided with holes corresponding to the positions of the clamping studs 5, so as to facilitate the clamping studs 5 to pass through the wire mesh 4. The lower grid pressing plate 3 is welded with a sleeve 6. After the clamping stud 5 passes through the sleeve 6, it is fixed by a nut 7 and a gasket 8. In this embodiment, the lower grid pressing plate 3, the clamping studs 5, the sleeve 6, the nut 7 and the gasket 8 are all made of stainless steel material, so they have good corrosion resistance. A plurality of first connectors 9 are welded to the outer edge of the lower grid pressing plate 3, and a plurality of second connectors 11 are welded to the inner wall of the cylinder 10. The first connector 9 and the second connector 11 are connected by a fixing member 12. In this embodiment, the fixing member 12 is a bolt and a nut, so as to further enhance the connection strength of the lower grid pressing plate 3.
[0025] A spring support member 13 is provided at the bottom position inside the heat exchange tube 2. In this embodiment, the spring support member 13 is made of stainless steel material, so it has good corrosion resistance. The spring support member 13 includes: a support portion 130, a vertical portion 131 and a spiral body portion 132. The support portion 130 supports on the wire mesh 4. The vertical portion 131 is connected between the support portion 130 and the spiral body portion 132. The diameter of the spiral body portion 132 is gradually increased from top to bottom, so that the spiral body portion 132 forms a cone structure with a narrow top and a wide bottom. A catalyst 14 is provided inside the heat exchange tube 2. In this embodiment, the catalyst 14 is a catalytic sphere. The distance between every two adjacent layers of the spiral body portion 132 is less than the diameter of the catalytic sphere, so that the catalytic sphere always remains above the spiral body portion.
[0026] In summary, compared with the prior art, a spring support member 13 is added at the bottom position inside the heat exchange tube 2 after the improvement of the present utility model. By adding the spring support member 13, the catalyst is blocked inside the heat exchange tube 2, thus solving the technical problem that the catalyst leaks from the gap between the wire mesh and the tube sheet sealing surface in the prior art.
[0027] The above embodiments only illustratively explain the principle and efficacy of the creation of the present utility model, as well as some applied embodiments, rather than limiting the present utility model; it should be noted that for those of ordinary skill in the art, without departing from the creative concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model.
Claims
1. A catalyst support structure, comprising: A lower tube sheet and a plurality of heat exchange tubes, the lower tube sheet being provided with a plurality of heat exchange tube holes, the free ends below the heat exchange tubes being welded into the heat exchange tube holes of the lower tube sheet, a lower grid pressing plate being provided below the lower tube sheet, a wire mesh being provided between the lower grid pressing plate and the lower tube sheet, characterized in that: a spring support member is provided at the bottom position inside the heat exchange tube, the spring support member comprising: a support portion, a vertical portion and a spiral body portion, the support portion being supported on the wire mesh, the vertical portion being connected between the support portion and the spiral body portion, the diameter of the spiral body portion being gradually increased from top to bottom so that the spiral body portion forms a cone structure with a narrow upper part and a wide lower part, a catalyst being provided inside the heat exchange tube, the catalyst being located above the spiral body portion.
2. The catalyst support structure according to claim 1, wherein: The catalyst is a catalytic sphere, and the distance between every two adjacent layers of the spiral body portion is less than the diameter of the catalytic sphere.
3. A catalyst support structure according to claim 1, characterized in that: A plurality of clamping studs are welded to the bottom of the lower tube sheet, sleeves are welded to the lower grid pressing plate, and the clamping studs pass through the sleeves and are fixed by nuts and washers.
4. A catalyst support structure according to claim 3, characterized in that: The wire mesh is provided with holes at positions corresponding to the clamping studs.
5. The catalyst support structure according to claim 3, wherein: The lower grid pressing plate, the spring support member, the clamping studs, the sleeves, the nuts and the washers are all made of stainless steel material.
6. A catalyst support structure according to claim 1, wherein: A plurality of first connectors are welded to the outer edge of the lower grid pressing plate, a plurality of second connectors are welded to the inner wall of the cylinder body, and the first connectors and the second connectors are connected by fixing members.
7. A catalyst support structure according to claim 6, characterized in that: The fixing members are bolts and nuts.