Non-standard reducing stamping device
By designing a non-standard diameter-reducing device, the tapping force is adjusted by using the power source to impact the pipe head of the heating pipe on the pipe plate, the problem of air cutting flame damage is solved, the repair efficiency is improved and the life of the pipe plate is extended.
Patent Information
- Application Number
- CN202421776018.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-25
AI Technical Summary
In the prior art, when removing the heating pipe, the gas cutting flame is prone to damage the inner hole wall and sealing groove of the pipe plate, and generate high temperature to cause thermal deformation of the pipe plate, affecting its subsequent use.
Design a non-standard diameter variable diameter stamping device, and adjust the strike force of the power source through a stamping device configured with an air hammer or other power source to impact the pipe head of the heating pipe on the pipe plate, thereby stamping the old pipe head down.
This device avoids damage to the inner wall of the pipe plate by the gas cutting flame, improves the pipe plate repair efficiency, and extends the life of the pipe plate.
Smart Images
Figure CN222805896U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tubular evaporators, in particular to a non-standard variable diameter punching device. Background Art
[0002] Falling film evaporator is an important equipment in the process of alumina preparation. The evaporator process uses the film distributor at the upper end of the evaporator to evenly divert the mother liquor into the heating tube of the evaporator. After the high-temperature steam in the heating chamber outside the tube exchanges heat with it, the heated mother liquor enters the liquid chamber and further evaporates, and the water in it is discharged in the form of water vapor. The tube sheet is an important component in the evaporator. The number of tube holes on the tube sheet is proportional to the heating area of the evaporator, ranging from hundreds to thousands. The tube sheet and the heating tube are physically extruded and expanded to achieve static point sealing to ensure the isolation of steam and mother liquor and achieve solution concentration. The effect of the expansion and sealing of the tube sheet and the heating tube directly determines the working efficiency of the evaporator, so the repair of the tube sheet is extremely important. At the same time, the processing cost of the tube sheet of the falling film evaporator is relatively high, and extending the service life has a positive significance for reducing the maintenance cost of enterprise equipment.
[0003] At present, the heating tube is removed by gas cutting. Due to the small internal space of the heating tube and the visual obstruction, the gas cutting flame will damage the inner hole wall and sealing groove of the tube sheet during operation, and the damage is basically irreparable, making it difficult to ensure that there is enough sealing area when installing a new tube, which makes the sealing of the heating chamber worse; and the gas cutting generates a temperature greater than 3000℃, which is easy to cause a slight thermal deformation of the nearby tube sheet, which is not conducive to the subsequent reuse of the tube sheet. Therefore, it is of great significance to design and develop a heating tube removal device that causes little damage to the tube sheet and the sealing groove and does not cause thermal deformation of the tube sheet. Utility Model Content
[0004] In view of the above problems, the utility model provides a non-standard variable diameter punching device configured with an air hammer or other power source, which adjusts the striking force by adjusting the power source to impact the tube head of the heating tube on the tube sheet, thereby punching out the old tube head in the tube sheet.
[0005] To achieve the above purpose, the technical solution of the utility model is as follows:
[0006] A non-standard variable diameter stamping device is used for removing a heating tube head on a tube sheet, comprising a fixed section, a stamping section, a guide section, a connecting section and a transition section; the device is a coaxial hole-free device; the connecting section is arranged between the fixed section and the transition section; a stamping section is arranged on a side of the transition section away from the connecting section; a guide section is arranged on a side of the stamping section away from the transition section; the stamping section is a cylinder, the diameter of the stamping section is the same as the outer diameter of the heating tube head, and the diameter of the guide section is smaller than the diameter of the stamping section.
[0007] Preferably, the guide section is a cylinder, and the diameter of the guide section is the same as the inner diameter of the heating tube head.
[0008] Preferably, the thickness of the guide section is smaller than the thickness of the tube sheet.
[0009] Preferably, the diameter of the punching section is 57 mm.
[0010] Preferably, the diameter of the guide section is 50 mm.
[0011] Preferably, the thickness of the guide section is 50 mm.
[0012] Preferably, the fixing section is embedded in the power source interface.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] The utility model provides a non-standard variable diameter punching device configured with an air hammer or other power source, which can adjust the striking force by adjusting the power source to impact the tube head of the heating tube on the tube sheet, thereby punching out the old tube head in the tube sheet. The device avoids the damage to the inner wall of the tube sheet caused by the gas cutting flame when removing the heating tube, improves the repair efficiency of the tube sheet, and prolongs the life of the tube sheet. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A schematic diagram of the structure of an embodiment of a non-standard variable diameter punching device;
[0016] Figure 2 A schematic diagram of the structure of an embodiment of combining a non-standard variable diameter punching device with a tube sheet;
[0017] Figure 3 A schematic diagram of the structure of a tube sheet embodiment;
[0018] Figure identification: 1-fixed section, 2-stamping section, 3-guide section, 4-connecting section, 5-heating tube head, 6-transition section. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0020] Reference Figure 1A non-standard variable diameter stamping device is used to remove the heating tube head 5 on the tube plate, comprising a fixed section 1, a stamping section 2, a guide section 3, a connecting section 4 and a transition section 6; the device is a coaxial hole-free device; the connecting section 4 is arranged between the fixed section 1 and the transition section 6; the stamping section 2 is arranged on the side of the transition section 6 away from the connecting section 4; the guide section 3 is arranged on the side of the stamping section 2 away from the transition section 6; the stamping section 2 is a cylinder, the diameter of the stamping section 2 is the same as the outer diameter of the heating tube head 5, and the diameter of the guide section 3 is smaller than the diameter of the stamping section 2.
[0021] In one embodiment of the present invention, the guide section 3 is a cylinder, and the diameter of the guide section 3 is the same as the inner diameter of the heating tube head 5 .
[0022] In one embodiment of the present invention, the thickness of the guide section 3 is smaller than the thickness of the tube sheet.
[0023] In one embodiment of the present invention, the diameter of the punching section 2 is 57 mm.
[0024] In one embodiment of the present invention, the diameter of the guide section 3 is 50 mm.
[0025] In one embodiment of the present invention, the thickness of the guide section 3 is 50 mm.
[0026] In one embodiment of the present invention, the fixing section 1 is embedded in the power source interface.
[0027] When in use, the fixed section 1 is embedded in the power source interface. Figure 2 The stamping section 2 is fitted with the heating tube head 5 , and the guide section 3 is embedded in the heating tube head 5 .
[0028] Reference Figure 3 A sealing groove is provided on the inner hole wall of the tube sheet to ensure that there is sufficient sealing area when installing the heating tube, to achieve static point sealing between the tube sheet and the heating tube, to ensure the isolation of steam and mother liquor, and to achieve solution concentration.
[0029] The utility model provides a non-standard variable diameter punching device configured with an air hammer or other power source, which can adjust the striking force by adjusting the power source to impact the tube head of the heating tube on the tube sheet, thereby punching out the old tube head in the tube sheet. The device avoids the damage to the inner wall of the tube sheet caused by the gas cutting flame when removing the heating tube, improves the repair efficiency of the tube sheet, and prolongs the life of the tube sheet.
Claims
1. A non-standard variable diameter punching device for removing a heating tube head (5) on a tube sheet, characterized in that: The device comprises a fixed section (1), a stamping section (2), a guide section (3), a connecting section (4) and a transition section (6); the device is a coaxial hole-free device; the connecting section (4) is arranged between the fixed section (1) and the transition section (6); the stamping section (2) is arranged on the side of the transition section (6) away from the connecting section (4); the guide section (3) is arranged on the side of the stamping section (2) away from the transition section (6); the stamping section (2) is a cylinder, the diameter of the stamping section (2) is the same as the outer diameter of the heating tube head (5), and the diameter of the guide section (3) is smaller than the diameter of the stamping section (2).
2. A non-standard variable diameter punching device as claimed in claim 1, characterized in that: The guide section (3) is a cylinder, and the diameter of the guide section (3) is the same as the inner diameter of the heating tube head (5).
3. A non-standard variable diameter punching device as claimed in claim 1, characterized in that: The thickness of the guide section (3) is smaller than the thickness of the tube sheet.
4. A non-standard variable diameter punching device as claimed in claim 1, characterized in that: The diameter of the punching section (2) is 57 mm.
5. A non-standard variable diameter punching device as claimed in claim 1 or 2, characterized in that: The diameter of the guide section (3) is 50 mm.
6. A non-standard variable diameter punching device as claimed in claim 1 or 2, characterized in that: The thickness of the guide section (3) is 50 mm.
7. A non-standard variable diameter punching device as claimed in claim 1, characterized in that: The fixing section (1) is embedded in the power source interface.