Novel heat exchanger sleeve device
By using a short tube with an outer diameter smaller than the inner diameter and a sealing ring structure to expand and seal the leaking section in the heat exchanger, the maintenance problem after the heat exchange tube is damaged is solved, achieving low-cost, low-impact sealing and preventive maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-24
AI Technical Summary
Existing heat exchangers often suffer from heat exchange tube damage due to chemical corrosion and erosion by solid substances after prolonged use. Traditional repair methods are complex and costly, which affects heat exchange performance.
A short tube with an outer diameter smaller than the inner diameter of the heat exchange tube is inserted into the leak section and expanded to the cooling tube using special tools. Combined with a sealing ring and a retaining ring structure, a seal is formed, reducing the impact on heat exchange performance.
It achieves low-cost, low-impact sealing, prevents leaks, reduces material consumption, and lowers the maintenance costs of heat exchangers.
Smart Images
Figure CN224034469U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to heat exchanger technical field, concretely is a novel heat exchanger bushing device. BACKGROUND
[0002] The heat exchanger will be damaged due to medium chemical corrosion and medium solid matter scouring after long time use. After the heat exchange tube is damaged, the traditional repair method includes plugging tube and whole inner sleeve pipe technology. The plugging tube is blocked by the plug to prevent the medium from flowing. The whole inner sleeve pipe technology uses a sleeve pipe with an outer diameter smaller than the inner diameter of the heat exchange tube and the same length as the heat exchange tube, which is inserted into the leaking heat exchange tube, and the sleeve pipe is expanded or welded at both ends.
[0003] In addition, there is also a local inner sleeve pipe technology, which uses a short pipe with an outer diameter smaller than the inner diameter of the heat exchange tube, inserts the pipe into the corresponding leakage section inside the heat exchange tube, and then expands the cooling tube and the short sleeve pipe together with special tools to achieve the purpose of plugging leakage. This operation method is not only complex, but also has high material cost and great influence on heat exchange performance. Therefore, the utility model provides a novel heat exchanger sleeve device to solve the above problems. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a novel heat exchanger sleeve device to solve the problems in the background art.
[0005] To achieve the above purpose, the utility model provides the following technical scheme: a novel heat exchanger sleeve device, comprising a tube sheet, a cooling tube, a metal pipe and a core rod, the left end of the cooling tube is sleeved with the tube sheet, the inner end of the cooling tube is provided with the metal pipe, and the core rod is inserted into the metal pipe, the center position of the core rod is provided with a sealing ring on both sides, and a check ring is arranged outside the sealing ring.
[0006] The first taper ring sleeved on the core rod is outside the check ring, the discerning jaw sleeved on the core rod is outside the first taper ring, and the second taper ring sleeved on the core rod is outside the discerning jaw.
[0007] As a preferred embodiment of the utility model, the metal check ring A sleeved on the core rod is outside the second taper ring.
[0008] As a preferred embodiment of the utility model, the metal check ring B sleeved on the core rod is outside the metal check ring A.
[0009] As a preferred embodiment of the utility model, the core rod is provided with two groups of nuts at both ends, and the nuts are outside the metal check ring B.
[0010] As a preferred of the utility model, the first taper ring and the second taper ring are symmetrical structures.
[0011] As a preferred of the utility model, the first taper ring and the second taper ring are respectively embedded in two sides of the discerning jaw.
[0012] As a preferred of the utility model, the elastic ring is embedded in the middle position of the discerning jaw.
[0013] As a preferred of the utility model, the gap is arranged between the cooling pipe and the metal pipe, and the gap is arranged between the metal pipe and the core rod.
[0014] As a preferred of the utility model, the left end of the core rod is a protruding structure.
[0015] Compared with the prior art, the utility model has the beneficial effects that:
[0016] 1. In the utility model, a short pipe with an outer diameter less than the inner diameter of the heat exchange pipe is used, the pipe is inserted into the corresponding leakage section inside the heat exchange pipe, and then a special tool is used to expand the cooling pipe and the short sleeve pipe together to form the purpose of plugging the leakage of the cooling pipe.
[0017] 2. In the utility model, compared with the pipe plugging technology, the technology has lower influence on the heat exchange performance of the heat exchanger. Compared with the whole inner sleeve pipe technology, the technology has low material cost and low influence on the heat exchange performance. In addition, in the case that the easy damage interval of the heat exchange pipe can be predicted in advance, the local inner sleeve pipe can be made in advance to prevent the leakage of the heat exchanger. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is the whole structure schematic view of the utility model;
[0019] Figure 2 It is the discerning jaw and elastic ring connecting structure schematic view of the utility model;
[0020] Figure 3 It is the discerning jaw and elastic ring internal connecting structure front view of the utility model;
[0021] Figure 4 It is the first taper ring structure schematic view of the utility model;
[0022] Figure 5 It is the second taper ring structure schematic view of the utility model.
[0023] In the drawing: 1, tube plate; 2, cooling pipe; 3, metal pipe; 4, core rod; 5, sealing ring; 6, retaining ring; 7, first taper ring; 8, discerning jaw; 9, elastic ring; 10, second taper ring; 11, metal retaining ring A; 12, metal retaining ring B; 13, nut. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.
[0025] In the description of the utility model, it should be understood that the directions or position relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model in that the indicated devices or elements must have a specific direction, be constructed and operated in a specific direction. In addition, in the description of the utility model, in addition, "first", "second", "third", "fourth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0026] In the description of the utility model, it should be understood that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The meaning of "multiple" is two or more than two, unless otherwise explicitly specified, all belong to the protection scope of the utility model.
[0027] Embodiment: as Figures 1-5 The utility model provides a technical scheme: including tube sheet 1, cooling pipe 2, metal pipe 3 and core rod 4, cooling pipe 2 left end sleeve has tube sheet 1, be located cooling pipe 2 inner end installation metal pipe 3, and insert core rod 4 in metal pipe 3 inside, the both sides of the central position of core rod 4 are equipped with sealing ring 5, be located sealing ring 5's outside is equipped with baffle ring 6;
[0028] The first taper ring 7 of the sleeve of core rod 4 is located outside the baffle ring 6, the discerning jaw 8 of the sleeve of core rod 4 is located outside the first taper ring 7, the second taper ring 10 of the sleeve of core rod 4 is located outside the discerning jaw 8.
[0029] The metal baffle ring A 11 of the sleeve of core rod 4 is located outside the second taper ring 10.
[0030] The metal baffle ring B 12 of the sleeve of core rod 4 is located outside the metal baffle ring A 11.
[0031] The core rod 4 is provided with nuts 13 at both ends, and the nuts 13 are provided with two groups and are outside the metal check ring B12.
[0032] The first taper ring 7 and the second taper ring 10 are symmetrical structures.
[0033] The first taper ring 7 and the second taper ring 10 are respectively embedded in both sides of the resolution jaw 8.
[0034] The elastic ring 9 is embedded in the middle position of the resolution jaw 8.
[0035] The cooling pipe 2 is provided with a gap with the metal pipe 3, and the metal pipe 3 is provided with a gap with the core rod 4.
[0036] The left end of the core rod 4 is a protruding structure.
[0037] Working principle:
[0038] 1. Water flows into the gap between the cooling pipe and the tool through the high-pressure water inlet of the core rod.
[0039] 2. With the increase of water pressure, the sealing ring expands outward, and the check ring moves towards the taper sleeve.
[0040] 3. Under the extrusion of the taper sleeve, the split jaw expands radially and tightly holds the inner wall of the pipe, preventing the tool from moving radially in the pipe.
[0041] 4. With the continuous increase of water pressure, the pipe segment between the two sealing rings will be expanded to the required outer diameter size, forming permanent deformation. The amount of expansion depends on the water pressure and the mechanical properties of the pipe.
[0042] 5. When the pipe is expanded, the water pressure is removed. At this time, the split jaw retracts radially under the action of the elastic ring.
[0043] 6. The retracted split jaw pushes the check ring and the sealing ring, so that the sealing ring returns to the original sealing groove position.
[0044] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.
Claims
1. A novel heat exchanger casing assembly, comprising a tube sheet (1), cooling tubes (2), metal tubes (3), and a core rod (4), characterized in that: The left end of the cooling pipe (2) is fitted with a tube plate (1), and a metal pipe (3) is installed at the inner end of the cooling pipe (2). A core rod (4) is inserted inside the metal pipe (3). A sealing ring (5) is installed on both sides of the center position of the core rod (4), and a retaining ring (6) is provided on the outside of the sealing ring (5). The first conical ring (7) fitted on the core rod (4) is located outside the retaining ring (6), the distinguishing claw (8) fitted on the core rod (4) is located outside the first conical ring (7), and the second conical ring (10) fitted on the core rod (4) is located outside the distinguishing claw (8).
2. The novel heat exchanger jacket device according to claim 1, characterized in that: The metal retaining ring A (11) fitted on the core rod (4) is located outside the second cone ring (10).
3. The novel heat exchanger jacket device according to claim 1, characterized in that: The metal retaining ring B (12) fitted on the core rod (4) is located outside the metal retaining ring A (11).
4. The novel heat exchanger jacket device according to claim 1, characterized in that: Nuts (13) are installed at both ends of the core rod (4), and there are two sets of nuts (13) located outside the metal retaining ring B (12).
5. A novel heat exchanger jacket device according to claim 1, characterized in that: The first conical ring (7) and the second conical ring (10) have a symmetrical structure.
6. A novel heat exchanger jacket device according to claim 1, characterized in that: The first conical ring (7) and the second conical ring (10) are respectively embedded on both sides of the distinguishing claw (8).
7. A novel heat exchanger jacket device according to claim 1, characterized in that: An elastic ring (9) is embedded in the middle of the distinguishing claw (8).
8. A novel heat exchanger jacket device according to claim 1, characterized in that: There is a gap between the cooling pipe (2) and the metal pipe (3), and there is a gap between the metal pipe (3) and the core rod (4).
9. A novel heat exchanger jacket device according to claim 1, characterized in that: The left end of the core rod (4) has a protruding structure.