Pressure vessel leak repairing device

Abstract

The utility model discloses a pressure vessel leak repairing device, which relates to the technical field of pressure vessel repairing devices, and comprises a base and a repairing device, a second motor is arranged on the base, a downward output shaft of the second motor is connected with a gear through a key, the front part of the outer side surface of the gear is rotatably connected with a rack, and the rack is connected with a motor. Pressure relief cylinders are installed on the front sides of the left side face and the right side face of the repairing device, and sliding blocks are slidably connected to the inner side faces of the pressure relief cylinders. Through the arrangement of the rack, the threaded rod, the internal threaded block and the gear, the repairing device can move in the horizontal direction and the vertical direction, the adjusting range is enlarged, rapid positioning of the repairing device is achieved, the working efficiency is improved, through the arrangement of the pressure relief hole, the pressure relief cylinder, the sliding block and the elastic piece, monitoring and pressure relief of the pressure container can be achieved, and the working efficiency is improved. Dynamic pressure relief and overpressure protection mechanisms are integrated, so that pressure can be quickly relieved, and potential safety hazards are eliminated.

Description

Technical Field

[0001] This utility model relates to the technical field of pressure vessel repair devices, specifically a pressure vessel leak repair device. Background Technology

[0002] In industries such as petrochemicals, energy and power, and biomedicine, pressure vessels, as core equipment for storing and transmitting high-pressure media, are exposed to high-temperature, high-pressure, and corrosive environments for extended periods. Their inner or outer walls are prone to leaks such as pinholes, cracks, and perforations due to media erosion and stress fatigue. Leaks can lead not only to media loss and environmental pollution but also to major safety accidents such as explosions and fires. Therefore, rapid, safe, and reliable leak repair devices are crucial for ensuring the continuous operation of pressure vessels.

[0003] The positioning and adjustment mechanisms of existing repair devices are mostly single-dimensional or limited-degree-of-freedom designs. Most devices only have unidirectional movement capabilities in the horizontal or vertical directions, resulting in a limited adjustment range, which is time-consuming and labor-intensive, making it difficult to quickly locate the device in high-pressure emergency repair scenarios. Moreover, existing pressure vessel leak repair devices generally lack a systematic pressure relief and explosion-proof design, mainly relying on a single sealing structure for pressure isolation, without integrating dynamic pressure relief and overpressure protection mechanisms. This makes it difficult to quickly relieve dangerous pressure in emergency situations, posing significant safety hazards. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a pressure vessel leak repair device, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: it includes a base and a repair device, a second motor is mounted on the top of the base, the downward output shaft of the second motor is connected to a gear via a key, and a rack is rotatably connected to the front of the outer side of the gear;

[0008] Pressure relief cylinders are installed on the front sides of the left and right sides of the repair device. Sliding blocks are slidably connected to the inner side of the pressure relief cylinders. Pressure relief holes are opened on the side of the pressure relief cylinders away from the repair device.

[0009] Optionally, the outer side of the rack slides inside the base, and the outer sides of both ends of the downward output shaft of the second motor are connected to the base via bearings.

[0010] Optionally, a sliding groove is provided on the upper front of the base, and a fixed cylinder is fixedly connected to the middle of the upper part of the rack, with the lower outer side of the fixed cylinder sliding inside the sliding groove.

[0011] Optionally, a first motor is installed at the upper end of the fixed cylinder, and the downward output shaft of the first motor is connected to a threaded rod via a coupling. The outer sides of both ends of the threaded rod are connected to the fixed cylinder via bearings.

[0012] Optionally, the outer side of the threaded rod is threadedly connected to an internal threaded block, the outer side of the internal threaded block slides inside the fixed cylinder, and the repair device is installed on the front side of the internal threaded block.

[0013] Optionally, an elastic element is fixedly connected to the rear side of the sliding block, and the other end of the elastic element is fixedly connected to the pressure relief cylinder. A threaded nail is threadedly connected to the inner side of the rear wall of the pressure relief cylinder.

[0014] This utility model provides a pressure vessel leak repair device, which has the following beneficial effects:

[0015] 1. This pressure vessel leak repair device, by setting up a rack, threaded rod, internal threaded block and gear, can realize the horizontal and vertical movement of the repair device, increase the adjustment range, realize the rapid positioning of the repair device, and increase work efficiency.

[0016] 2. This pressure vessel leak repair device, by setting pressure relief holes, pressure relief cylinders, sliding blocks and elastic elements, can realize the monitoring and pressure relief of pressure vessels. It integrates dynamic pressure relief and overpressure protection mechanisms, which can quickly relieve pressure and eliminate safety hazards. Attached Figure Description

[0017] Figure 1 This is a frontal three-dimensional structural diagram of the present invention;

[0018] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 3 This is a frontal cross-sectional three-dimensional structural diagram of the present invention;

[0020] Figure 4 This is a three-dimensional cross-sectional view of the pressure relief cylinder of this utility model.

[0021] In the diagram: 1. First motor; 2. Fixed cylinder; 3. Second motor; 4. Base; 5. Rack; 6. Repair device; 7. Slide groove; 8. Threaded rod; 9. Internal threaded block; 10. Gear; 11. Threaded nail; 12. Pressure relief hole; 13. Pressure relief cylinder; 14. Sliding block; 15. Elastic element. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example

[0024] Please see Figures 1 to 4 This utility model provides a pressure vessel leak repair device, including a base 4 and a repair device 6. A second motor 3 is installed on the top of the base 4. The downward output shaft of the second motor 3 is connected to a gear 10 via a key. A rack 5 is rotatably connected to the front of the outer side of the gear 10.

[0025] Pressure relief cylinders 13 are installed on the front of the left and right sides of the repair device 6. Sliding blocks 14 are slidably connected to the inner side of the pressure relief cylinders 13. Pressure relief holes 12 are opened on the side of the pressure relief cylinders 13 away from the repair device 6.

[0026] Specifically, the repair device 6 includes a sealing plate and a drive mechanism. The sealing plate is a circular metal plate with a high-temperature resistant elastic sealing gasket on the front end, made of fluororubber with a thickness of 3-5mm. An annular injection groove is provided on the edge for injecting liquid sealant. The drive mechanism is a miniature cylinder, model SMC CDQ2A series. The cylinder body is fixed to the front side of the internal thread block 9, and the piston rod is fixedly connected to the rear side of the sealing plate. The working pressure range is 0.4-0.8MPa. The pressure relief cylinder 13 is a hollow cylinder, with one end penetrating the pressure vessel wall and extending to an internal insertion depth L=50-100mm. The other end is fixed to the left and right sides of the repair device 6. The sliding block 14 is a square piston. The inner diameter of the pressure relief cylinder 13 is clearance-fitted with a tolerance of H7 / g6, and its initial position is in front of the pressure relief hole 12. When the internal pressure P of the pressure vessel ≥ a set threshold, the sliding block 14 overcomes the resistance of the elastic element 15 and moves backward, exposing the pressure relief hole 12 and connecting it to the inside of the vessel, thus achieving pressure relief.

[0027] Please refer to Figure 3. The outer side of the rack 5 slides inside the base 4, and the outer sides of both ends of the downward output shaft of the second motor 3 are connected to the base 4 through bearings.

[0028] Specifically, the base 4 and the rack 5 are fitted with a clearance tolerance of H8 / g7 to ensure that the horizontal movement straightness is ≤0.1mm / m.

[0029] Please refer to Figure 1. A groove 7 is provided on the upper front of the base 4. A fixed cylinder 2 is fixedly connected to the middle of the upper part of the rack 5. The lower outer side of the fixed cylinder 2 slides inside the groove 7.

[0030] Specifically, the fixed cylinder 2 is made of No. 45 steel, with surface quenching treatment, hardness HRC 40-45, and load-bearing capacity ≥500N, meeting the vertical load requirements of the repair device 6.

[0031] Please refer to Figure 1 and Figure 3 The upper end of the fixed cylinder 2 is equipped with a first motor 1. The downward output shaft of the first motor 1 is connected to a threaded rod 8 through a coupling. The outer sides of both ends of the threaded rod 8 are connected to the fixed cylinder 2 through bearings.

[0032] Specifically, threaded rod 8 has a trapezoidal thread with a nominal diameter of Φ20mm, a pitch of 5mm, a thread angle of 30°, conforming to GB / T5796.3-2005 standard, an effective stroke of H=200mm, and a lead accuracy of ±0.05mm / 100mm.

[0033] Please refer to Figure 3. The outer side of the threaded rod 8 is threadedly connected to the internal threaded block 9. The outer side of the internal threaded block 9 slides inside the fixed cylinder 2. The repair device 6 is installed on the front side of the internal threaded block 9.

[0034] Please refer to Figure 4. An elastic element 15 is fixedly connected to the rear side of the sliding block 14. The other end of the elastic element 15 is fixedly connected to the pressure relief cylinder 13. A threaded nail 11 is threadedly connected to the inner side of the rear wall of the pressure relief cylinder 13.

[0035] Specifically, the elastic element 15 is a compression spring made of 65Mn, with an elastic coefficient k = 20-40 N / mm, a pre-compression amount Δx = 100 mm, and a corresponding initial elastic force F0 = k・Δx = 2000-4000 N.

[0036] In operation, the location of the pressure vessel leak is first determined. Then, the second motor 3 drives the gear 10 to rotate. Utilizing the meshing connection between the gear 10 and the rack 5, the rack 5 moves left and right. Based on the location of the pressure vessel leak, the repair device 6 is moved to a position aligned vertically with the leak. Then, the first motor 1 is started, driving the threaded rod 8 to rotate. Utilizing the threaded connection between the threaded rod 8 and the internal threaded block 9, the internal threaded block 9 moves the repair device 6 up and down, aligning it with the pressure vessel leak. The leak is then repaired. During the repair process, there is a pressure barrier inside the pressure vessel. The pressure relief cylinder 13 is inserted into the pressure vessel, and then the pressure inside the pressure vessel pushes the sliding block 14 to slide backward inside the pressure relief cylinder 13, thereby compressing the elastic element 15. When the pressure inside the pressure vessel is too high, the sliding block 14 will slide behind the pressure relief hole 12, so that the pressure relief hole 12 is connected to the inside of the pressure vessel, and then the pressure is relieved. When the pressure relief cylinder 13 is no longer needed to relieve pressure, the threaded pin 11 is rotated. Using the threaded connection between the threaded pin 11 and the pressure relief cylinder 13, the threaded pin 11 moves forward and blocks the sliding block 14, so that the sliding block 14 no longer moves.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pressure vessel leak repair device, comprising a base (4) and a repair device (6), characterized in that: A second motor (3) is mounted on the base (4). The downward output shaft of the second motor (3) is connected to a gear (10) via a key. A rack (5) is rotatably connected to the front of the outer side of the gear (10). Pressure relief cylinders (13) are installed on the front sides of the left and right sides of the repair device (6). A sliding block (14) is slidably connected to the inner side of the pressure relief cylinder (13). A pressure relief hole (12) is opened on the side of the pressure relief cylinder (13) away from the repair device (6).

2. The pressure vessel leak repair device according to claim 1, characterized in that: The outer side of the rack (5) slides inside the base (4), and the outer sides of both ends of the downward output shaft of the second motor (3) are connected to the base (4) through bearings.

3. The pressure vessel leak repair device according to claim 1, characterized in that: The upper front of the base (4) is provided with a sliding groove (7), and a fixed cylinder (2) is fixedly connected to the middle of the upper part of the rack (5). The lower outer side of the fixed cylinder (2) slides inside the sliding groove (7).

4. The pressure vessel leak repair device according to claim 3, characterized in that: The upper end of the fixed cylinder (2) is equipped with a first motor (1), and the downward output shaft of the first motor (1) is connected to a threaded rod (8) through a coupling. The outer sides of both ends of the threaded rod (8) are connected to the fixed cylinder (2) through bearings.

5. A pressure vessel leak repair device according to claim 4, characterized in that: The outer side of the threaded rod (8) is threadedly connected to an internal threaded block (9), the outer side of the internal threaded block (9) slides inside the fixed cylinder (2), and the repair device (6) is installed on the front side of the internal threaded block (9).

6. The pressure vessel leak repair device according to claim 1, characterized in that: An elastic element (15) is fixedly connected to the rear side of the sliding block (14), and the other end of the elastic element (15) is fixedly connected to the pressure relief cylinder (13). A threaded nail (11) is threadedly connected to the inner side of the rear wall of the pressure relief cylinder (13).

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