Non-welding sealed heat exchanger tube bundle plugging tool
Through non-welded sealed heat exchanger tube bundle sealing tools, the tube bundle sealing is achieved using plastic materials and threaded connections, solving the problems of leakage and welding damage in traditional seals, and providing a safe and efficient sealing solution.
Patent Information
- Application Number
- CN202420719834.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-09
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-04-09
AI Technical Summary
Traditional heat exchanger tube bundle sealing methods are prone to leakage and require welding, which poses damage to tube bundles and safety hazards, especially in the petrochemical industry, which is prone to fires and explosions.
Non-welded sealing heat exchanger tube bundle sealing tools, including seals, positioning devices, tensioning devices and special wrenches, are used to achieve sealing through plastic materials and threaded connections to adapt to different tube bundle diameters.
It achieves fast and safe pipe binding sealing to avoid welding damage, has wide applicability and long service life, and is suitable for the maintenance of flammable and explosive media.
Smart Images
Figure CN223091125U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat exchanger maintenance equipment, in particular to a plugging tool for a heat exchanger tube bundle with non-welded sealing. Background Technique
[0002] A heat exchanger is an important equipment in industrial production, and the sealing performance of its tube bundle is directly related to the performance and safety of the equipment. The traditional sealing method for heat exchanger tube bundles mainly adopts manual methods. However, sometimes leakage may still occur after manual plugging and pressure testing. At this time, the plug needs to be welded, but the welding operation may cause damage to the tube bundle and requires professional operation, resulting in high costs. Moreover, in petrochemical industry heat exchangers, the medium is generally flammable and explosive, and heat exchanger maintenance often requires on-site maintenance. If electric welding is carried out, it is easy to cause fire and explosion accidents. Therefore, it is of great practical value to develop a plugging tool for a heat exchanger tube bundle with non-welded sealing. Content of the Utility Model
[0003] The purpose of the utility model is to provide a plugging tool for a heat exchanger tube bundle with non-welded sealing to solve the problems raised in the above background technique.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0005] A plugging tool for a heat exchanger tube bundle with non-welded sealing includes a sealing member, which is a hollow plastic cylinder structure; a positioning device located behind the sealing member, the positioning device is a hollow structure, and a conical boss in contact with the rear end of the sealing member is provided at one end of the positioning device close to the sealing member; a tensioning device located inside the positioning device, the front end of the tensioning device is threadedly connected inside the sealing member, and the rear end of the tensioning device is located outside the positioning device; a special wrench clamped and installed at the tail end of the tensioning device, and the special wrench drives the tensioning device and the positioning device to move towards the sealing member side by rotation.
[0006] A groove is provided on the outer side wall of the front part of the sealing member, and an O-ring is installed on the groove.
[0007] The number of the grooves is at least one.
[0008] An arc groove is provided on the inner side wall of the sealing member, and an internal thread is provided on the side wall of the sealing member at the end far from the positioning device.
[0009] The positioning device includes a hollow cylinder body, and two cylindrical vertical rods perpendicular to the cylinder body are symmetrically arranged on the cylinder body.
[0010] External threads adapted to the internal threads inside the sealing member are provided on the outer side wall of the front end of the tensioning device.
[0011] A cracking groove is provided on the side wall of the tensioning device near the rear end.
[0012] The rear end of the tensioning device is a regular polygon structure, and the diameter of the circumscribed circle of the rear end of the tensioning device is greater than the diameter of the hollow structure on the positioning device.
[0013] The special wrench includes a clamping sleeve. An installation hole adapted to the rear end of the tensioning device is provided in the middle of one end of the clamping sleeve, and a handle is fixedly arranged on the outer side wall of the end of the clamping sleeve far from the tensioning device.
[0014] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:
[0015] 1) The structure of the present utility model is simple, easy to manufacture and repair, convenient to operate, and can quickly and effectively seal the end of the tube bundle; at the same time, it can adapt to tube bundles of different diameters and has wide applicability.
[0016] 2) The present utility model is made of plastic materials, which improves the service life and sealing performance of the tool, and has high practical value and broad application prospects. Description of the Drawings
[0017] Figure 1 It is a three-dimensional sectional structure schematic diagram of an embodiment of the present utility model.
[0018] Figure 2 It is a sectional structure schematic diagram of an embodiment of the present utility model.
[0019] Figure 3 It is a side view of an embodiment of the present utility model.
[0020] Reference numerals and names of the drawings: seal 1, positioning device 2, tensioning device 3, special wrench 4, O-ring 5. Detailed Embodiments
[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0023] As Figures 1-3 shown, a plugging tool for a heat exchanger tube bundle with non-welded sealing of the present utility model includes a sealing member 1, a positioning device 2, a tensioning device 3, a special wrench 4 and an O-ring 5.
[0024] The sealing member 1 is a hollow plastic cylinder structure, such as aluminum alloy, which can adapt to the shape of the tube bundle to form a tight inlay; an arc groove is provided on the inner side wall of the sealing member 1 so that the position deforms when tensioned to tightly fix the sealing member on the inner wall of the tube bundle; at least one groove is provided on the outer side wall of the front part of the sealing member 1, and the O-ring 5 is installed on the groove, and the O-ring 5 is in close contact with the inner wall of the tube bundle.
[0025] The positioning device 2 includes a cylinder body, which is a hollow structure with openings at both ends. A conical boss in contact with the rear end of the sealing member 1 is provided at one end of the positioning device 2 close to the sealing member 1. The inclined surface of the conical boss is in close contact with the end surface of the sealing member 1. In actual use, the large end surface of the positioning device 2 is fixed on the end surface of the tube bundle to achieve position fixation. Two cylindrical vertical rods perpendicular to the cylinder body are symmetrically arranged on the cylinder body, and the rotation operation of the positioning device 2 can be realized by using the cylindrical vertical rods.
[0026] The tensioning device 3 is a cylindrical structure. The rear end of the tensioning device 3 is a regular polygon structure, and the diameter of the circumscribed circle of the rear end of the tensioning device 3 is larger than the diameter of the hollow structure on the positioning device 2. A splitting groove is provided on the side wall of the tensioning device 3 close to the rear end; an internal thread is provided on the side wall of the inner part of the sealing member 1 away from the positioning device 2, and an external thread adapted to the internal thread inside the sealing member 1 is provided on the outer side wall of the front end of the tensioning device 3. The tensioning device 3 and the sealing member 1 are threadedly connected through the internal thread and the external thread. The tensioning device 3 can adopt a bolt structure. The sealing member 1 is tensioned and deformed to be tightly embedded on the inner wall of the tube bundle through the tensioning force. At the same time, through the selection of materials and the optimization of the structure, when the tensioning force reaches the requirement of the deformation amount of the sealing member, the tensioning device 3 breaks. Such a design is convenient for the operator to master the tensioning force, ensure that the tensioning force meets the requirement of deforming the sealing member, and avoid problems such as insufficient sealing caused by insufficient tensioning force or leakage, or damage to the sealing member caused by excessive tensioning force.
[0027] The special wrench 4 includes a clamping sleeve. An installation hole adapted to the rear end of the tensioning device 3 is provided in the middle of one end of the clamping sleeve. A handle is fixedly provided on the outer side wall of the end of the clamping sleeve away from the tensioning device 3. The handle is convenient for the staff to hold and facilitates the rotation of the clamping sleeve.
[0028] The operation steps of the present utility model include the following steps;
[0029] 1) Prepare the sealing member 1, the positioning device 2, the tensioning device 3 and the special wrench 4 according to the illustration;
[0030] 2) Insert the seal 1 into the heat exchanger tube bundle;
[0031] 3) Place the positioning device 2 in place so that the seal 1 fits with the positioning device 2;
[0032] 4) Install the tensioning device 3 and use a special wrench 4 to tighten the tensioning device 3. The tensioning device 3 pulls the seal 1 out of shape, causing the seal 1 to be embedded on the inner wall of the tube bundle;
[0033] 5) When the tensioning device 3 breaks, the seal 1 reaches the required deformation amount, completing the installation of the seal 1.
Claims
1. A non-welded sealed heat exchanger tube bundle plugging tool, characterized in that, Comprising: A seal (1), the seal (1) being a hollow plastic cylindrical structure; A positioning device (2) located behind the seal (1), the positioning device (2) being a hollow structure, and a conical boss in contact with the rear end of the seal (1) being provided at one end of the positioning device (2) close to the seal (1); A tensioning device (3) located inside the positioning device (2), the front end of the tensioning device (3) being threadedly connected inside the seal (1), and the rear end of the tensioning device (3) being located outside the positioning device (2); A special wrench (4) snap-fitted to the tail end of the tensioning device (3), and the special wrench (4) drives the tensioning device (3) and the positioning device (2) to move towards the seal (1) side by rotation.
2. The non-welding sealed heat exchanger tube bundle plugging tool according to claim 1, characterized in that: A groove is provided on the outer side wall of the front part of the seal (1), and an O-ring (5) is installed on the groove.
3. The non-welded sealed heat exchanger tube bundle plugging tool according to claim 2, characterized in that, The number of the grooves is at least one.
4. A plugging tool for a heat exchanger tube bundle with non-welded sealing according to claim 1, characterized in that: An arc groove is provided on the inner side wall of the seal (1), and an internal thread is provided on the side wall of the seal (1) at the end far from the positioning device (2).
5. A plugging tool for a heat exchanger tube bundle with non-welded sealing according to claim 4, characterized in that: The positioning device (2) comprises a hollow cylinder, and two cylindrical vertical rods perpendicular to the cylinder are symmetrically arranged on the cylinder.
6. A plugging tool for a heat exchanger tube bundle with non-welded sealing according to claim 4, characterized in that: An external thread adapted to the internal thread inside the seal (1) is provided on the outer side wall of the front end of the tensioning device (3).
7. A plugging tool for a heat exchanger tube bundle with non-welded sealing according to claim 6, characterized in that: A cleavage groove is provided on the side wall of the tensioning device (3) close to the rear end.
8. A plugging tool for a heat exchanger tube bundle with non-welded sealing according to claim 7, characterized in that: The rear end of the tensioning device (3) is a regular polygon structure, and the diameter of the circumcircle of the rear end of the tensioning device (3) is greater than the diameter of the hollow structure on the positioning device (2).
9. A plugging tool for a heat exchanger tube bundle with non-welded sealing according to claim 1, characterized in that: The special wrench (4) comprises a snap-fitting sleeve, an installation hole adapted to the rear end of the tensioning device (3) is provided in the middle of one end of the snap-fitting sleeve, and a handle is fixedly provided on the outer side wall of the snap-fitting sleeve at the end far from the tensioning device (3).