Boiler pressure vessel with leak-proof structure
By designing the anti -leakage structure at the flange connection of the boiler pressure vessel, including the fixed flange plate, fixed bolt, stopping mechanism and sealing ring component, the problem of loosening and sealing failure caused by vibration has been solved. The tight and safe connection of the air inlet and the exhaust pipe.
Patent Information
- Application Number
- CN202421050273.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-05-15
AI Technical Summary
During the working process of the boiler pressure vessel, periodic vibration will occur at the flange connection between the exhaust pipe and the exhaust port, causing the bolt connection to be loose, resulting in seal failure and leakage.
Designed a boiler pressure vessel with a leakage structure, using the first flange plate and the second French plate with each other to prevent fixing the fixed bolt through fixed bolt and stopping mechanism. Set the sealing ring component to enhance the gas tightness.
It effectively prevents leakage at the connection between the exhaust port and the exhaust pipe, ensures the tightness and safety of the connection, and avoids energy waste and safety hazards.
Smart Images
Figure CN222391934U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of boiler equipment, in particular to a boiler pressure vessel with an anti-leakage structure. Background Art
[0002] Boiler pressure vessel is the full name of boiler and pressure vessel. Because they are both special equipment, they play an important role in production and life. Boiler pressure vessel is a mechanical device that uses the thermal energy of fuel or other energy to heat water into hot water or high-pressure steam.
[0003] The boiler pressure vessel mainly includes a boiler body, and an exhaust port is arranged on the top of the boiler body, and the exhaust port is connected to the external pipeline through a flange connection structure. During the operation of the boiler pressure vessel, the flange connection between the exhaust pipe and the exhaust port will produce periodic vibrations. These dynamic loads will cause the tightened bolt connection on the flange connection to gradually loosen due to repeated loading and unloading. The loose bolt connection will cause the gap between the flanges to increase, the seal will fail, and leakage will occur between the exhaust port and the exhaust pipe, resulting in energy waste and safety hazards. Utility Model Content
[0004] In view of the above problems, the utility model proposes a boiler pressure vessel with an anti-leakage structure to solve the problem that during the operation of the existing boiler pressure vessel, the flange connection between the exhaust pipe and the exhaust port will produce periodic vibration, causing the tightened bolt connection on the flange connection to gradually loosen due to repeated loading and unloading.
[0005] To achieve the purpose of the utility model, the utility model is implemented by the following technical solutions: a boiler pressure vessel with an anti-leakage structure, comprising a boiler body and a charging window and an exhaust port arranged outside the boiler body, an exhaust pipe is connected to the exhaust port away from the boiler body, and a flange fixing structure is arranged between the exhaust pipe and the exhaust port;
[0006] The flange fixing structure comprises a first flange and a second flange which are matched with each other, the first flange is fixedly connected to the exhaust port, the second flange is fixedly connected to the exhaust pipe, first bolt seats are arranged on both sides of the first flange, second bolt seats are arranged on both sides of the second flange, and the first bolt seats and the second bolt seats are matched with each other;
[0007] A fixing bolt is installed at the joint of the first bolt seat and the second bolt seat, a check mechanism for limiting the rotation of the fixing bolt is arranged on the first flange, and a sealing ring assembly for preventing gas leakage is arranged at the joint of the first flange and the second flange.
[0008] A further improvement is that the sealing ring assembly includes an annular sealing groove and a rubber ring, the annular sealing groove is opened on the lower end surface of the first flange, the rubber ring is fixedly connected to the upper end surface of the second flange, the axes of the second flange, the first flange, the annular sealing groove and the rubber ring coincide, and the rubber ring is plugged into the annular sealing groove.
[0009] A further improvement is that the fixing bolt includes a bolt body, which passes through the second bolt seat and the first bolt seat and is threadedly connected to the second bolt seat and the first bolt seat, a screwing head is provided at one end of the bolt body away from the first bolt seat, and a fastening nut is sleeved on the other end of the bolt body, which is threadedly connected to the bolt body.
[0010] Further improvement lies in: the non-return mechanism includes a pull rod and a hinge seat, the hinge seat is fixedly connected to the side of the first flange away from the second flange, one end of the pull rod is hinged to the hinge seat, the other end of the pull rod is sleeved with a limit nut, the limit nut is threadedly connected to the pull rod, and a limit groove for movably cooperating with the pull rod is provided at the end of the bolt body away from the screwing head, two L-shaped baffles are provided along the upper end of the limit groove, and there is a gap between the two L-shaped baffles, the gap and the width of the limit groove are larger than the diameter of the pull rod, and the gap and the width of the limit groove are smaller than the diameter of the limit nut.
[0011] A further improvement is that a rubber pad is provided on the side of the fastening nut facing the first bolt seat and a side of the screwing head facing the second bolt seat, and the rubber pad is sleeved on the outside of the bolt body.
[0012] A further improvement is that a gasket is provided on the side of the limiting nut facing the hinge seat, the gasket is sleeved on the outside of the limiting groove, and the gasket is fixedly connected to the limiting nut.
[0013] The beneficial effect of the utility model is that the fixing bolt is assembled on the second bolt seat. After the fixation between the two flanges is completed, the non-return mechanism will prevent the fixing bolt from loosening on the two bolt seats by limiting the rotation of the fixing bolt, thereby ensuring the tightness and safety of the connection between the exhaust port and the exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0015] Figure 1 It is a structural diagram of the boiler body in the utility model.
[0016] Figure 2 It is a structural diagram of the exhaust pipe in the utility model.
[0017] Figure 3It is a structural diagram of the first flange in the utility model.
[0018] Figure 4 It is a structural diagram of the second flange in the utility model.
[0019] Figure 5 This utility model Figure 2 A magnified view of the structure at center.
[0020] Among them: 1. Boiler body; 2. Charging window; 3. Exhaust port; 31. First flange; 32. First bolt seat; 33. Annular sealing groove; 4. Exhaust pipe; 41. Second flange; 42. Second bolt seat; 43. Rubber ring; 5. Bolt body; 51. Screw head; 52. Limiting groove; 6. Fastening nut; 61. Rubber pad; 7. Pull rod; 71. Articulated seat; 72. Limiting nut; 73. L-shaped baffle. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0022] according to Figure 1 , 2 As shown in Figures 3, 4 and 5, a boiler pressure vessel with a leak-proof structure is proposed in this embodiment, comprising a boiler body 1 and a charging window 2 and an exhaust port 3 arranged on the outside of the boiler body 1, the exhaust port 3 is connected to an exhaust pipe 4 at one end away from the boiler body 1, and a flange fixing structure is provided between the exhaust pipe 4 and the exhaust port 3; the exhaust pipe 4 is fixed to the exhaust port 3 on the boiler body 1 by the flange fixing structure.
[0023] Regarding the flange fixing structure: the flange fixing structure includes a first flange 31 and a second flange 41 that are matched with each other, the first flange 31 is fixedly connected to the exhaust port 3, the second flange 41 is fixedly connected to the exhaust pipe 4, first bolt seats 32 are provided on both sides of the first flange 31, and second bolt seats 42 are provided on both sides of the second flange 41, and the first bolt seats 32 and the second bolt seats 42 are matched with each other;
[0024] The first bolt seat 32 and the second bolt seat 42 are equipped with a fixing bolt at the joint. During assembly, the first flange 31 on the exhaust port 3 is matched with the second flange 41 on the exhaust pipe 4, and the first bolt seats 32 on both sides of the first flange 31 are matched with the second bolt seats 42 on both sides of the second flange 41. The fixing bolt is assembled on the first bolt seat 32 and the second bolt seat 42 to complete the fixation between the first flange 31 and the second flange 41. To prevent the fixing bolt from loosening, a check mechanism for limiting the rotation of the fixing bolt is provided on the first flange 31. After the fixing bolt is assembled, the check mechanism prevents the fixing bolt from loosening on the first bolt seat 32 and the second bolt seat 42 by limiting the rotation of the fixing bolt, thereby ensuring the tightness and safety of the connection between the exhaust port 3 and the exhaust pipe 4. To enhance the air tightness of the joint between the first flange 31 and the second flange 41, a sealing ring assembly for preventing gas leakage is provided at the joint between the first flange 31 and the second flange 41.
[0025] Specifically, the sealing ring assembly includes an annular sealing groove 33 and a rubber ring 43. The annular sealing groove 33 is provided on the lower end surface of the first flange 31. The rubber ring 43 is fixedly connected to the upper end surface of the second flange 41. The axes of the second flange 41, the first flange 31, the annular sealing groove 33 and the rubber ring 43 coincide with each other. The rubber ring 43 is plugged into and matched with the annular sealing groove 33. After the first flange 31 and the second flange 41 are aligned, the rubber ring 43 on the upper end of the second flange 41 will be inserted into the annular sealing groove 33 provided on the lower end of the first flange 31. The second flange 41 can fill the annular sealing groove 33 between the connecting surfaces of the first flange 31 and the second flange 41, and can effectively prevent the leakage of fluid media such as gas and liquid, and provide reliable static and dynamic sealing effects. At the same time, by using the rubber ring 43, the friction during flange connection can also be effectively reduced, which facilitates the installation and removal of the first flange 31 and the second flange 41.
[0026] About the fixing bolt: The fixing bolt includes a bolt body 5, which passes through the second bolt seat 42 and the first bolt seat 32 and is threadedly connected with the second bolt seat 42 and the first bolt seat 32. A screwing head 51 is provided at one end of the bolt body 5 away from the first bolt seat 32, and a fastening nut 6 is sleeved at the other end of the bolt body 5, which is threadedly connected with the bolt body 5. After the second bolt seat 42 and the first bolt seat 32 are aligned, the screwing head 51 is rotated to screw the bolt body 5 into the second bolt seat 42 and the first bolt seat 32 in turn. After the bolt body 5 is assembled, the fastening nut 6 is screwed onto the end of the bolt body 5 away from the screwing head 51, and the first bolt seat 32 and the second bolt seat 42 are connected more firmly by the fastening nut 6.
[0027] Regarding the non-return mechanism: the non-return mechanism includes a pull rod 7 and an articulated seat 71, the articulated seat 71 is fixedly connected to the side of the first flange 31 away from the second flange 41, one end of the pull rod 7 is articulated with the articulated seat 71, the other end of the pull rod 7 is sleeved with a limit nut 72, the limit nut 72 is threadedly connected with the pull rod 7, the end of the bolt body 5 away from the screwing head 51 is provided with a limit groove 52 that is movably matched with the pull rod 7, two L-shaped baffles 73 are provided along the upper end of the limit groove 52, there is a gap between the two L-shaped baffles 73, the gap and the width of the limit groove 52 are greater than the diameter of the pull rod 7, and the gap and the width of the limit groove 52 are less than the diameter of the limit nut 72. After the screwing head 51 is fixed, the pull rod 7 is moved to make the pull rod 7 fall from the upper end of the first flange 31 to the upper end of the bolt body 5. The pull rod 7 is inserted into the limiting groove 52, and then the limiting nut 72 is put on the outside of the limiting nut 72 and rotated. When the limiting nut 72 is rotated and pushed to the bottom of the L-shaped baffle 73, the L-shaped baffle 73 will limit the limiting nut 72 from lifting upward, so that the pull rod 7 remains in a state of continuous cooperation with the limiting groove 52. Under the limitation of the pull rod 7, the bolt body 5 will not rotate or loosen.
[0028] It should be noted that a rubber pad 61 is provided on the side of the fastening nut 6 facing the first bolt seat 32 and the side of the screwing head 51 facing the second bolt seat 42, and the rubber pad 61 is sleeved on the outside of the bolt body 5. The rubber pad 61 is used to distribute the pressure between the contact surface of the fastening nut 6 and the first bolt seat 32 and the contact surface of the screwing head 51 and the second bolt seat 42, so as to protect the first bolt seat 32, the second bolt seat 42, the screwing head 51 and the fastening nut 6.
[0029] In addition, a gasket is provided on the side of the limiting nut 72 facing the hinge seat 71, and the gasket is sleeved on the outside of the limiting groove 52, and the gasket is fixedly connected to the limiting nut 72. Similarly, the gasket is arranged between the limiting nut 72 and the bolt body 5, and also plays the role of sharing the pressure at the connection between the limiting nut 72 and the bolt body 5, which will not be described in detail here.
[0030] The working principle of the present application is as follows: the exhaust pipe 4 is fixed to the exhaust port 3 on the boiler body 1 through a flange fixing structure. During assembly, the first flange 31 on the exhaust port 3 is matched with the second flange 41 on the exhaust pipe 4, and the first bolt seats 32 on both sides of the first flange 31 are matched with the second bolt seats 42 on both sides of the second flange 41. The fixing bolt is assembled on the first bolt seat 32 and the second bolt seat 42 to complete the fixation between the first flange 31 and the second flange 41. After the fixing bolt is assembled, the check mechanism prevents the fixing bolt from loosening on the first bolt seat 32 and the second bolt seat 42 by limiting the rotation of the fixing bolt, thereby ensuring the tightness and safety of the connection between the exhaust port 3 and the exhaust pipe 4.
[0031] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0032] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.
Claims
1. A boiler pressure vessel with an anti-leakage structure, comprising a boiler body (1) and a charging window (2) and an exhaust port (3) arranged outside the boiler body (1), wherein the exhaust port (3) is connected to an exhaust pipe (4) at one end away from the boiler body (1), characterized in that: A flange fixing structure is provided between the exhaust pipe (4) and the exhaust port (3); The flange fixing structure comprises a first flange (31) and a second flange (41) which are matched with each other, the first flange (31) is fixedly connected to the exhaust port (3), the second flange (41) is fixedly connected to the exhaust pipe (4), first bolt seats (32) are provided on both sides of the first flange (31), second bolt seats (42) are provided on both sides of the second flange (41), and the first bolt seat (32) and the second bolt seat (42) are matched with each other; A fixing bolt is installed at the joint of the first bolt seat (32) and the second bolt seat (42), a check mechanism for limiting the rotation of the fixing bolt is provided on the first flange (31), and a sealing ring assembly for preventing gas leakage is provided at the joint of the first flange (31) and the second flange (41).
2. A boiler pressure vessel with a leak-proof structure according to claim 1, characterized in that: The sealing ring assembly comprises an annular sealing groove (33) and a rubber ring (43); the annular sealing groove (33) is provided on the lower end surface of the first flange (31); the rubber ring (43) is fixedly connected to the upper end surface of the second flange (41); the axes of the second flange (41), the first flange (31), the annular sealing groove (33) and the rubber ring (43) coincide; and the rubber ring (43) is plug-fitted with the annular sealing groove (33).
3. The boiler pressure vessel with a leak-proof structure according to claim 1, characterized in that: The fixing bolt comprises a bolt body (5), the bolt body (5) passes through the second bolt seat (42) and the first bolt seat (32) and is threadedly connected to the second bolt seat (42) and the first bolt seat (32), a screwing head (51) is provided at one end of the bolt body (5) away from the first bolt seat (32), and a fastening nut (6) is sleeved on the other end of the bolt body (5), and the fastening nut (6) is threadedly connected to the bolt body (5).
4. A boiler pressure vessel with a leak-proof structure according to claim 3, characterized in that: The non-return mechanism comprises a pull rod (7) and an articulated seat (71), wherein the articulated seat (71) is fixedly connected to the side of the first flange (31) away from the second flange (41), one end of the pull rod (7) is articulated to the articulated seat (71), and the other end of the pull rod (7) is sleeved with a limiting nut (72), and the limiting nut (72) is threadedly connected to the pull rod (7), and the end of the bolt body (5) away from the screwing head (51) is provided with a limiting groove (52) that is movably matched with the pull rod (7), and two L-shaped baffles (73) are provided along the upper end of the limiting groove (52), and there is a gap between the two L-shaped baffles (73), and the gap and the width of the limiting groove (52) are greater than the diameter of the pull rod (7), and the gap and the width of the limiting groove (52) are smaller than the diameter of the limiting nut (72).
5. The boiler pressure vessel with a leak-proof structure according to claim 3, characterized in that: A pull rod (7) is provided on the side of the fastening nut (6) facing the first bolt seat (32) and on the side of the screwing head (51) facing the second bolt seat (42), and the pull rod (7) is sleeved on the outside of the bolt body (5).
6. The boiler pressure vessel with a leak-proof structure according to claim 4, characterized in that: A rubber pad (61) is provided on the side of the fastening nut (6) facing the first bolt seat (32) and a rubber pad (61) is provided on the side of the screwing head (51) facing the second bolt seat (42). The rubber pad (61) is sleeved on the outside of the bolt body (5).