Pressure pipeline elbow under-pressure plugging and leak repairing device

Abstract

The utility model discloses an under-pressure plugging and leak repairing device for a pressure pipeline elbow, which comprises but is not limited to a clamping structure, the outline of an inner cavity after the clamping structure is closed is matched with the outer outline of a to-be-plugged elbow, and a pressure relief drainage port is arranged on the clamping structure corresponding to a leakage point of the to-be-plugged elbow. And the pressure relief drainage port is connected with a drainage tube with an opening and closing valve. The utility model provides an under-pressure plugging and leak repairing device for a pressure pipeline elbow, aims to solve the problem of leakage caused by scouring of high-temperature and high-pressure steam water to the outer arc of the pipeline elbow in the operation of a unit in the prior art, and particularly provides a more effective and lasting under-pressure plugging and leak repairing scheme under the condition that equipment cannot exit from operation. And the leakage hidden danger of the elbow is thoroughly eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of a fluid plugging device, and specifically to a pressure pipeline elbow pressure plugging and leak repair device. Background Art

[0002] During the operation of the unit, a large amount of high-temperature and high-pressure steam and water scours the pipe wall for a long time, resulting in local thinning and leakage, which mostly occurs at the outer arc of the elbow. In actual maintenance work, due to objective reasons such as the operation mode of the equipment, the equipment cannot be taken out of operation. Sometimes, only the pressure welding leak repair technology can be used to deal with the pipeline leakage. Currently, welding bolts are mostly used for leak repair. It is to place a high-pressure nut at the leakage point so that the leakage point is located at the center of the nut, and the leakage medium sprays out from the middle of the nut. Then the nut is welded to the pipeline. By reducing the pressure, the welded joint of the pressure welding leak repair is basically close to the situation during normal welding. Under the protection of anti-scalding measures, the screw is screwed into the nut and tightened, and then the joint part of the screw and the nut is welded firmly to repair the leak and eliminate the leakage point.

[0003] Please refer to Figure 1 and Figure 2 , after using the bolt to repair the leak, the area covered by the leak repair is the same as the area of the nut, and the scoured and thinned part of the outer arc pipe wall of the elbow has not been substantially improved, and it is easy to generate secondary multiple leaks in the short term.

[0004] In view of this, the utility model designs a special pressure pipeline elbow pressure plugging and leak repair device for this shortcoming to completely eliminate the leak hidden danger of the elbow. Content of the Utility Model

[0005] Aiming at the defects in the prior art, the utility model provides a pressure pipeline elbow pressure plugging and leak repair device, aiming to solve the leakage problem caused by the scouring of high-temperature and high-pressure steam and water on the outer arc of the pipeline elbow during the operation of the unit. Especially when the equipment cannot be taken out of operation, a more effective and durable pressure plugging and leak repair scheme is provided to completely eliminate the leak hidden danger of the elbow.

[0006] To achieve the above purpose, the specific technical solution adopted by the utility model is as follows:

[0007] A pressure pipeline elbow pressure plugging and leak repair device, the key lies in: including but not limited to a clamping structure, the inner cavity contour after the clamping structure is closed is adapted to the outer contour of the elbow to be plugged, and a pressure relief and drainage port is opened on the clamping structure corresponding to the leakage point of the elbow to be plugged, and a drainage pipe with an opening and closing valve is connected to the pressure relief and drainage port.

[0008] Furthermore, the clamping structure includes but not limited to an elbow sleeve, and the elbow sleeve has an openable lumen.

[0009] Furthermore, the elbow sleeve clamps the elbow to be plugged through an open seam provided along its length direction.

[0010] Furthermore, the elbow sleeve is split into two sleeve bodies through two opposite open seams provided along its length direction, and the elbow to be plugged is clamped by closing the two sleeve bodies.

[0011] Furthermore, in the plugged state, the open seam is hermetically connected through a first weld seam.

[0012] Furthermore, in the plugged state, the pipe orifice of the elbow sleeve and the elbow to be plugged are hermetically connected through a second weld seam.

[0013] Furthermore, the clamping range of the elbow sleeve covers at least the arc section of the elbow to be plugged.

[0014] Compared with the prior art, the remarkable effects of the present utility model are as follows:

[0015] (1) The pressure pipeline elbow pressure plugging and leak repair device not only solves the problem that the traditional leak repair method cannot be directly applied during the operation of the equipment, but also effectively plugs the leakage point at the outer arc of the pipeline elbow in a high-temperature and high-pressure environment through its unique design. Especially when the equipment cannot be shut down for maintenance, this device can ensure the continuous operation of the equipment while quickly, safely and durably plugging and repairing the leakage point under pressure, greatly improving the operation safety and stability of the equipment;

[0016] (2) The device adopts a clamping structure, and the inner cavity contour thereof is adapted to the outer contour of the elbow to be plugged, ensuring a tight fit between the device and the elbow, strengthening the outer arc section of the elbow that is greatly affected by erosion, and effectively preventing secondary leakage caused by local thinning of the elbow;

[0017] (3) By opening a pressure relief and drainage port on the elbow sleeve and connecting a drainage pipe with an opening and closing valve to drain the steam and water, not only can the pressure of the elbow sleeve be eliminated, so that welding can be carried out in an atmospheric environment to ensure the welding and sealing effect, but also the drainage process is controlled through the opening and closing valve, facilitating the operator to quickly plug the leakage point after welding;

[0018] (4) The welding arc does not directly heat the leakage point, eliminating the risk of possible material thermal deformation and further deterioration of the leakage;

[0019] (5) The present utility model can form an overall clamp on the elbow with local thinning, has a large coverage area, has less impact on the pipeline stability and stronger operability, and has certain application advantages and promotion prospects. Description of the Drawings

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts do not necessarily draw according to the actual scale.

[0021] Figure 1 is a schematic structural diagram of a welded bolt plugging in the prior art;

[0022] Figure 2 is a schematic diagram of the state of the secondary leakage point in the prior art;

[0023] Figure 3 is a schematic diagram of the plugging state of the pressure pipeline elbow pressure plugging and leak repair device in the first embodiment;

[0024] Figure 4 is a schematic assembly structure diagram of the pressure pipeline elbow pressure plugging and leak repair device in the second embodiment;

[0025] Figure 5 is a schematic overall structure diagram of the pressure pipeline elbow pressure plugging and leak repair device in the second embodiment;

[0026] Figure 6 is a plugging flow chart of the pressure pipeline elbow pressure plugging and leak repair device in the second embodiment;

[0027] Reference numerals in the figure: 1 - elbow sleeve, 2 - elbow to be plugged, 3 - opening and closing valve, 4 - drainage pipe, 5 - open seam, 6 - sleeve body, 7 - first weld seam, 8 - second weld seam, 9 - leakage point. Specific embodiments

[0028] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention 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 to the present invention. In addition, in the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0030] Figure 3 The first embodiment of the present utility model is shown: A pressure pipeline elbow pressure-blocking and leakage-repairing device, including but not limited to a clamping structure, the inner cavity contour of the closed clamping structure is adapted to the outer contour of the elbow 2 to be blocked, and a pressure relief and drainage port is opened on the clamping structure corresponding to the leakage point 9 of the elbow 2 to be blocked, and a drainage pipe 4 with an opening and closing valve 3 is connected to the pressure relief and drainage port.

[0031] In this embodiment, the clamping structure includes but not limited to an elbow sleeve 1, and the elbow sleeve 1 has an openable lumen. The elbow sleeve 1 clamps the elbow 2 to be blocked through a slit 5 opened along its length direction. Specifically, the elbow sleeve 1 is made of elastic memory metal, and when in use, the open end is expanded so that the elbow sleeve 1 is buckled on the elbow 2 to be blocked, and when the installation of the elbow sleeve 1 is completed, it can automatically return to the initial state to facilitate subsequent welding.

[0032] The elbow sleeve 1 is made of elastic. In the blocked state, the slit 5 is hermetically connected through a first weld 7. In the blocked state, the pipe orifice of the elbow sleeve 1 and the elbow 2 to be blocked are hermetically connected through a second weld 8.

[0033] In order to improve the safety and reliability of pressure welding and leakage repair, the clamping range of the elbow sleeve 1 covers at least the arc section of the elbow 2 to be blocked.

[0034] Figures 4 to 6 The second embodiment of the present utility model is shown. Compared with the first embodiment, the difference of this embodiment is that the elbow sleeve 1 is split into two sleeve bodies 6 through two slits 5 oppositely opened along its length direction, and the elbow 2 to be blocked is clamped by closing the two sleeve bodies (see Figure 6 ).

[0035] Continuing the description of the second embodiment, after the two sleeve bodies 6 are closed, the two slits 5 between them are hermetically connected through a first weld 7 to ensure the integrity and tightness in the blocked state. Similarly, in order to increase the stability and safety of the device, in the blocked state, the pipe orifices of the two sleeve bodies 6 after being closed and the elbow 2 to be blocked are respectively hermetically connected through a second weld 8.

[0036] It is worth mentioning that in both embodiments, we can select an elbow sleeve 1 with a suitable inner diameter according to the specific shape and size of the elbow 2 to be blocked to ensure that its inner cavity contour perfectly matches the outer contour of the elbow 2 to be blocked. This targeted selection not only improves the effect of blocking and leakage repair, but also enhances the adaptability and practicability of the device.

[0037] In summary, the pressure pipeline elbow plugging and leakage repair device under pressure not only solves the problem that traditional leakage repair methods cannot be directly applied during equipment operation, but also through its unique design, effectively plugs the leakage point at the outer arc of the pipeline elbow in a high-temperature and high-pressure environment. Especially when the equipment cannot be shut down for maintenance, this device can ensure the continuous operation of the equipment while quickly, safely and durably plugging and repairing the leakage point under pressure, greatly improving the operation safety and stability of the equipment; the device adopts a clamping structure, and the inner cavity contour thereof is adapted to the outer contour of the elbow 2 to be plugged, ensuring a tight fit between the device and the elbow, strengthening the outer arc section of the elbow greatly affected by erosion, and effectively preventing secondary leakage caused by local thinning of the elbow; by opening a pressure relief and drainage port on the elbow sleeve 1 and connecting a drainage pipe 4 with an opening and closing valve 3 to discharge steam and water, not only can the pressure of the elbow sleeve be eliminated to perform welding in an atmospheric pressure environment to ensure the welding seal effect, but also the drainage process is controlled by the opening and closing valve 3, facilitating the operator to quickly plug the leakage point 9 after welding; the welding arc does not directly heat the leakage point, eliminating the risk of material thermal deformation and further deterioration of the leakage that may be caused; the utility model can form an overall clamp on the elbow with local thinning, with a large coverage area, less impact on the pipeline stability and stronger operability, having certain application advantages and popularization prospects.

[0038] Finally, it should be noted in the specification that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the specification of the present invention.

Claims

1. A pressure pipeline elbow plugging and leak repair device under pressure, characterized in that: Including but not limited to a clamping structure, the inner cavity profile of the clamping structure after closing is adapted to the outer profile of the elbow to be blocked, and a pressure relief and drainage port is provided on the clamping structure corresponding to the leakage point of the elbow to be blocked, and a drainage pipe with an opening and closing valve is connected to the pressure relief and drainage port.

2. The plugging and leak - mending device for a pressure pipeline elbow under pressure according to claim 1, wherein: The clamping structure includes but not limited to an elbow sleeve, and the elbow sleeve has an openable lumen.

3. The leak plugging device for pressure pipeline elbows under pressure according to claim 2, characterized in that: The elbow sleeve clamps the elbow to be blocked through an open seam opened along its length direction.

4. The pressure pipeline elbow plugging and leak repair device according to claim 2, characterized in that: The elbow sleeve is split into two sleeve bodies through two open seams oppositely opened along its length direction, and the elbow to be blocked is clamped by closing the two sleeve bodies.

5. The pressure pipeline elbow pressure-blocking and leak-repairing device according to claim 3 or 4, characterized in that: In the blocked state, the open seam is sealed and connected through a first weld.

6. The pressure pipeline elbow plugging and leak repair device according to claim 5, characterized in that: In the blocked state, the pipe orifice of the elbow sleeve and the elbow to be blocked are sealed and connected through a second weld.

7. The pressure pipeline elbow plugging and leakage repair device according to claim 2 or 6, characterized in that: The clamping range of the elbow sleeve covers at least the arc section of the elbow to be blocked.

Images