Structure for avoiding deformation of tube plate of tubular heat exchanger
By installing expansion joints on the tube sheet of the shell-and-tube heat exchanger, the deformation problem caused by thermal expansion and contraction is solved, the tube sheet is stabilized, and the reliability of the equipment is enhanced.
Patent Information
- Application Number
- CN202423109040.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Existing shell-and-tube heat exchangers are prone to tube sheet deformation and tearing under high-temperature conditions, mainly due to the lack of thermal expansion and contraction compensation structures at parts such as inspection ports and exhaust gas inlets, resulting in the inability to eliminate local deformation stress.
Expansion joints, including longitudinal and transverse "Ω"-shaped stainless steel connecting pipes and stainless steel corrugated pipes, are installed on the tube sheet of the shell-and-tube heat exchanger to regulate thermal expansion and contraction, avoid local deformation stress, and enhance the flexibility of the structure.
This effectively avoids deformation and tearing of the tube sheet, improving the operational reliability and stability of the shell-and-tube heat exchanger.
Smart Images
Figure CN223564825U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to heat exchanger technical field, specifically point to a kind of structure for avoiding deformation of tube plate of column tube type heat exchanger. BACKGROUND
[0002] Column tube type heat exchanger is the main structure of direct-fired combustion furnace, which is welded by stainless steel tube plate and stainless steel tube, and is composed of furnace body shell, insulation layer, access hole, waste gas inlet, base and other parts, for realizing gas-gas heat exchange process of high-temperature flue gas and organic waste gas.
[0003] Because of high temperature inside heat exchanger in heat exchange process, to reduce internal deformation, existing column tube type heat exchanger is provided with expansion joint structure in transverse and longitudinal direction on tube plate, but tube plate deformation and even tearing still occur in actual use process, and the main reason of deformation is that waste gas channel outside heat exchanger and access hole, waste gas inlet and furnace body shell are welded as an integral structure, and there is no thermal expansion and contraction compensation structure in this part, and when heat is concentrated, access hole and waste gas inlet are deformed, and tube plate is deformed. SUMMARY
[0004] The utility model provides a kind of structure for avoiding deformation of tube plate of column tube type heat exchanger to solve the technical problems of above-mentioned prior art.
[0005] To solve the above technical problems, the technical scheme adopted by the utility model is:
[0006] A kind of structure for avoiding deformation of tube plate of column tube type heat exchanger, including stainless steel tube plate, support plate is arranged in stainless steel tube plate, stainless steel heat exchange tube is connected between support plate, the outer side of stainless steel tube plate is provided with insulation layer, the outer side of insulation layer is provided with furnace body shell and base, expansion joint one is arranged in longitudinal and transverse position of the stainless steel tube plate, access hole and waste gas inlet are connected on the stainless steel tube plate, access hole and waste gas inlet extend outward and are connected with furnace body shell, expansion joint two is arranged on access hole and waste gas inlet.
[0007] Further, expansion joint one adopts "Ω" type stainless steel connecting pipe.
[0008] Further, expansion joint two adopts stainless steel bellows.
[0009] Compared with prior art, the structure for avoiding deformation of tube plate of column tube type heat exchanger of the utility model increases expansion joint in heat exchanger tube plate and access hole, waste gas inlet, so that heat exchanger can be adjusted when running, avoid tube plate damage caused by local deformation stress cannot be eliminated, improve the reliability of column tube type heat exchanger operation. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 is a structural schematic view of the utility model;
[0011] Figure 2 is a structural schematic view inside the utility model;
[0012] Among them, 1, stainless steel pipe plate, 2, support plate, 3, stainless steel heat exchange pipe, 4, insulation layer, 5, furnace body shell, 6, base, 7, expansion joint one, 8, access hole, 9, waste gas inlet, 10, expansion joint two. DETAILED DESCRIPTION
[0013] The technical solutions in the embodiments of the utility model will be clearly and completely described below.
[0014] As Figure 1 and Figure 2 Indicated, a kind of structure to avoid deformation of tube bundle heat exchanger tube plate, including stainless steel pipe plate 1, stainless steel pipe plate 1 inside is provided with support plate 2, support plate 2 between being connected with stainless steel heat exchange pipe 3, the outside of stainless steel pipe plate 1 is provided with insulation layer 4, insulation layer 4 outside is provided with furnace body shell 5 and base 6, the stainless steel pipe plate 1 is provided with expansion joint one 7 in longitudinal and transverse position.
[0015] In the embodiment, expansion joint one 7 adopts "Ω" type stainless steel connecting pipe, when connecting, seam groove is set up on stainless steel pipe plate 1 in transverse and longitudinal direction, and the both sides of "Ω" type stainless steel connecting pipe connect seam groove.
[0016] Stainless steel pipe plate 1 is connected with access hole 8 and waste gas inlet 9, access hole 8 and waste gas inlet 9 extend outward and are connected with furnace body shell 5, and expansion joint two 10 is provided on access hole 8 and waste gas inlet 9.
[0017] In the embodiment, expansion joint two 10 adopts stainless steel bellows, and connecting pipe is provided on access hole 8 and waste gas inlet 9, connecting pipe is disconnected in the middle, and disconnected place is connected by stainless steel bellows, by increasing expansion joint two 10, offset deformation, solve the problem of heat deformation of tube bundle heat exchanger tube plate.
[0018] The utility model is not limited to the embodiment, and those skilled in the art can still make some corrections or changes without departing from the spirit of the utility model, i.e. the scope of disclosure, so the scope of protection of the utility model is limited to the range defined in the claims.
Claims
1. A structure for preventing deformation of a tube sheet in a shell-and-tube heat exchanger, comprising a stainless steel tube sheet, a support plate disposed within the stainless steel tube sheet, stainless steel heat exchange tubes connected between the support plates, an insulation layer disposed on the outer side of the stainless steel tube sheet, a furnace shell and a base disposed on the outer side of the insulation layer, expansion joints disposed in both the longitudinal and transverse directions of the stainless steel tube sheet, and an inspection port and an exhaust gas inlet connected to the stainless steel tube sheet, the inspection port and the exhaust gas inlet extending outward and connecting to the furnace shell, characterized in that: The second telescopic joint is arranged on the manhole and the exhaust gas inlet.
2. The structure for avoiding deformation of the tube plate of the column tube heat exchanger according to claim 1, characterized in that: The first telescopic joint is an "Ω"-shaped stainless steel connecting pipe.
3. The structure for avoiding deformation of the tube sheet of the column tube heat exchanger according to claim 1, characterized in that: The second telescopic joint is a stainless steel bellows.