Pipeline isolator
By designing a fixed frame and a pipe isolator for pipes, the problem of pressure holding caused by the bladder seal is solved, and a safe and reliable pipe isolation effect is achieved.
Patent Information
- Application Number
- CN202422801483.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-11-15
AI Technical Summary
Existing pipe isolation devices are prone to cause stress-retaining problems when using the capsule seal.
A pipeline isolator is designed, including a fixing frame, a bladder and a through-tube. The fixing frame includes a groove, the bladder is embedded in the groove, and the through-tube penetrates the inner and outer sides of the fixing frame, and is sealed and connected to the pipeline through the fixing frame. The through-tube leads out internal gas to avoid holding pressure.
It effectively avoids the phenomenon of holding pressure and ensures the safety and reliability of the pipeline isolation process.
Smart Images
Figure CN223306542U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of isolation devices, and in particular to a pipeline isolator. Background Art
[0002] Gas pipeline maintenance in the chemical industry often requires hot work such as cutting, welding, and other hot work. This requires isolation, purging, and replacement before any work is performed. Gas levels in the pipeline must be tested and found to be acceptable before any further work can be performed. In practice, upstream valves often exhibit internal leakage, necessitating effective isolation measures to ensure the safety of downstream maintenance operations.
[0003] In related technologies, a bladder serves as the primary sealing component of a pipe isolator. During use, the bladder inflates and expands within the pipe, providing a seal. However, this sealing method can easily cause pressure buildup. Therefore, existing isolators suffer from this problem. Utility Model Content
[0004] The present application provides a pipeline isolator for preventing pressure buildup, comprising a fixing frame, a bladder, and a through-tube. The fixing frame includes a groove. The bladder is embedded in the groove, and the fixing frame and the bladder are configured to sealably connect to the pipeline. The through-tube is connected to the fixing frame and extends through both the inside and outside of the fixing frame.
[0005] Optionally, the fixing frame includes a baffle, a cover plate and a support ring, the baffle is connected to the cover plate, the baffle is used to seal the pipe, the cover plate is used to connect to the pipe, the support ring is clamped between the baffle and the cover plate, the baffle, the cover plate and the support ring enclose the groove, the through pipe is connected to the baffle, and the through pipe is set through the baffle, the cover plate and the support ring.
[0006] Optionally, the sac further includes an air nozzle, and the air nozzle is passed through the support ring.
[0007] Optionally, the pipeline isolator further includes a pressure gauge and a hose, and the hose is connected to the gas nozzle and the pressure gauge.
[0008] Optionally, the cover plate includes a through hole, and the through pipe and the hose are passed through the through hole.
[0009] Optionally, the air nozzle passes through the inner side of the support ring, and the support ring and the through hole are coaxially arranged.
[0010] Optionally, the pipeline isolator further includes a first bolt, which connects the baffle and the cover plate.
[0011] Optionally, there are multiple first bolts, and the support ring abuts against the multiple first bolts.
[0012] Optionally, the pipeline isolator further includes a second bolt, the second bolt is screwed to the cover plate, and the second bolt is used to press against the pipeline to fix the cover plate to the pipeline.
[0013] Optionally, the cover plate includes a flange and a body, the flange is connected to the body, the flange protrudes outward from the body along the axial direction of the body, and the second bolt is threadedly connected to the flange.
[0014] The beneficial effects of the present application are as follows: by providing a fixing frame, a bladder, and a through-tube. The fixing frame includes a groove. The bladder is embedded in the groove, and the fixing frame and the bladder are used to sealably connect with the pipeline. The through-tube is connected to the fixing frame, and the through-tube passes through the inside and outside of the fixing frame. By providing the fixing frame, the fixing frame and the bladder are used to sealably connect with the pipeline, and the through-tube passes through the inside and outside of the fixing frame, so that when the pipeline isolator is in operation, the gas inside the pipeline can be discharged to the outside through the through-tube, thereby avoiding pressure buildup.
[0015] The above description is only an overview of the technical solution of this application. In order to more clearly understand the technical means of this application and implement it in accordance with the contents of the specification, the following is a detailed description of this application with the preferred embodiments of the application and in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a half-section view of a pipeline isolator in one embodiment of the present application;
[0017] Figure 2 This is a partially cutaway perspective view of a pipeline isolator in one embodiment of the present application;
[0018] Figure 3 This is an exploded view of a pipeline isolator in one embodiment of the present application;
[0019] Figure 4 This is a right side view of a pipeline isolator in one embodiment of the present application.
[0020] Wherein, the reference numerals:
[0021] 1 baffle
[0022] 2 cysts
[0023] 20 air nozzle
[0024] 3 Support ring
[0025] 4 Cover
[0026] 40 flange
[0027] 41 body
[0028] 410 through hole
[0029] 5 First Bolt
[0030] 6 Second bolt
[0031] 7 pipe
[0032] 8 hose
[0033] 9. Pressure gauge
[0034] 10 Pipeline
[0035] 11 Fixing bracket
[0036] 110 grooves DETAILED DESCRIPTION
[0037] The following describes the implementation of the present application through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present application from the contents disclosed in this specification.
[0038] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of this application will be clearly and completely described below in combination with the drawings in the embodiments of this application. Obviously, the described embodiments are only embodiments of a part of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application.
[0039] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or precedence. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.
[0040] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.
[0041] like Figure 1 As shown, in this embodiment, a pipeline isolator is provided, comprising a fixing frame 11, a bladder 2, and a through-tube 7. The fixing frame 11 includes a groove 110. The bladder 2 is embedded in the groove 110. The fixing frame 11 and the bladder 2 are configured to be sealed to the pipeline 10. The through-tube 7 is connected to the fixing frame 11 and extends through the inside and outside of the fixing frame 11.
[0042] like Figure 1 As shown, by setting a fixing frame 11, the fixing frame 11 and the bladder 2 are used to be sealed and connected with the pipeline 10, and the through pipe 7 is allowed to pass through the inner and outer sides of the fixing frame 11. In this way, when the pipeline isolator is working, the gas inside can be led out to the outside by the through pipe 7 ( Figure 1 In the diagram, the left side of the pipe isolator is its inner side, and the right side of the pipe isolator is its outer side), thus avoiding pressure buildup. The left side of the pipe isolator is upstream, and the right side of the pipe isolator is downstream.
[0043] like Figure 1 As shown, the bladder 2 can be annular and can be mounted on the fixing frame 11. The cross section of the bladder 2 can be circular. The material of the bladder 2 can be rubber, for example, the material of the bladder 2 can be butyl rubber. The inside of the bladder 2 can be filled with nitrogen. After the bladder 2 is filled with air, it can seal the inner wall of the pipe 10. The direction of the groove 110 can be annular. The right end of the fixing frame 11 can be fixed to the inner wall of the pipe 10 in a push-up manner using multiple second bolts 6. The pipe 10 can be a seamless steel pipe or a threaded steel pipe. How the fixing frame 11 and the bladder 2 are sealed and connected to the pipe 10 can also be referred to the subsequent content. The through pipe 7 and the fixing frame 11 can be connected by threaded connection or welding.
[0044] like Figure 1 As shown, optionally, the fixing frame 11 includes a baffle 1, a cover plate 4, and a support ring 3. The baffle 1 and the cover plate 4 are connected. The baffle 1 is used to seal the pipeline 10, and the cover plate 4 is used to connect to the pipeline 10. The support ring 3 is sandwiched between the baffle 1 and the cover plate 4. The baffle 1, the cover plate 4, and the support ring 3 enclose a groove 110. The through tube 7 is connected to the baffle 1 and is provided through the baffle 1, the cover plate 4, and the support ring 3. This configuration can restrict the expansion of the bladder 2 to the opening direction of the groove 110 (for example, the opening direction is toward the inner wall of the pipeline 10), preventing the bladder 2 from insufficiently expanding due to contact with a hot well or branch pipe in the pipeline 10.
[0045] like Figure 1As shown, the baffle 1 can be disc-shaped, and the cover plate 4 can be annular. The outer diameters of the baffle 1 and the cover plate 4 can be the same and smaller than the inner diameter of the pipe 10. The baffle 1 can be arranged on the sealed side of the pipe 10. The cover plate 4 is arranged on the unsealed side of the pipe 10. With this arrangement, the baffle 1 and the cover plate 4 can move within the pipe 10 before the bladder 2 is inflated. The baffle 1, the cover plate 4, the support ring 3, and the through tube 7 can be coaxially arranged. The baffle 1 and the cover plate 4 can be detachably connected by screwing or snapping.
[0046] like Figure 1 As shown, after the bladder 2 is embedded in the groove 110, it can seal the pipe 10 together with the baffle 1. The baffle 1 can be connected to the pipe 10 through the cover plate 4, the first bolt 5 and the second bolt 6. The support ring 3 may include an arc groove, and the inner side of the bladder 2 can be embedded in the arc groove so as to fully contact the support ring 3. The outer side of the inflated bladder 2 can abut against the inner wall of the pipe 10. The arc groove can be set on the outer side of the support ring 3. The left end of the through pipe 7 and the baffle 1 can be connected by threaded connection or welding. The material of the support ring 3 can be resin. The material of the baffle 1 and the cover plate 4 can be stainless steel 304. The material of the through pipe 7 can be steel or aluminum alloy. The right end of the through pipe 7 can be connected to the discharge pipe.
[0047] like Figure 2 As shown, the bladder 2 optionally further includes a gas nozzle 20, which is threaded through the support ring 3. The pipeline isolator further includes a pressure gauge 9 and a hose 8, which connects the gas nozzle 20 and the pressure gauge 9. The pressure gauge 9 is provided to monitor the pressure within the bladder 2 in real time to ensure the effectiveness of the isolation of the bladder 2. The hose 8 can be a rubber hose, a corrugated hose, or a stainless steel hose. The hose 8 can be sleeved over the gas nozzle 20 or threadedly connected to the gas nozzle 20, and the pressure gauge 9 can be inserted into the hose 8.
[0048] like Figure 2 As shown, the cover plate 4 optionally includes a through hole 410, through which the through pipe 7 and the hose 8 are inserted. This arrangement facilitates the passage of the through pipe 7 and the hose 8 from the cover plate 4. The through hole 410 can be a circular hole and coaxially arranged with the through pipe 7. The through hole 410 can be provided in the body 41 of the cover plate 4.
[0049] like Figure 2 As shown, the gas nozzle 20 optionally extends from the inner side of the support ring 3, and the support ring 3 and the through hole 410 are coaxially arranged. In this arrangement, the hose 8 can enter through the through hole 410 and the inner ring of the support ring 3 to connect with the gas nozzle 20, providing sufficient space for the hose 8 to connect with the gas nozzle 20.
[0050] like Figure 2As shown, the pipe isolator optionally further includes a first bolt 5, which connects the baffle 1 and the cover plate 4. This arrangement provides a detachable connection between the baffle 1 and the cover plate 4, facilitating installation of the support ring 3 and the bladder 2. One end (e.g., the left end) of the first bolt 5 can be threadedly engaged with the baffle 1 but does not penetrate the baffle 1. The other end (e.g., the right end) of the first bolt 5 can penetrate the cover plate 4 and be secured to the right end surface of the cover plate 4 with a nut.
[0051] Please also refer to Figure 3 and Figure 4 Optionally, there are multiple first bolts 5, and the support ring 3 abuts against the multiple first bolts 5. With this arrangement, the first bolts 5 can not only connect the baffle 1 and the cover plate 4, but also support the support ring 3. The multiple first bolts 5 can be evenly arranged with the central axis of the cover plate 4 as a reference. The central axis of each first bolt 5 can be set parallel to the central axis of the cover plate 4. The bottom surface of the support ring 3 can abut against each first bolt 5 at the same time. The first bolt 5 can be close to the center of the baffle 1 and the center of the cover plate 4 to prevent the first bolt 5 from scratching the pipe 10.
[0052] Please also refer to Figure 3 and Figure 4 Optionally, the pipeline isolator further includes a second bolt 6, which is screwed to the cover plate 4 and is used to abut against the pipeline 10 to fix the cover plate 4 to the pipeline 10. This arrangement allows the cover plate 4 and the pipeline 10 to be detachably connected, thereby enabling the pipeline isolator to be reused.
[0053] Please also refer to Figure 3 and Figure 4 The number of second bolts 6 can be multiple, and the multiple second bolts 6 can be evenly arranged with respect to the central axis of the cover plate 4. The central axis of each second bolt 6 can be perpendicular to the central axis of the cover plate 4. Each second bolt 6 can move forward and backward along the radial direction of the cover plate 4. When the cover plate 4 needs to be fixed, each second bolt 6 can be screwed in to abut against the inner wall of the pipe 10. When the cover plate 4 needs to be removed, each second bolt 6 can be screwed out to break contact with the pipe 10.
[0054] Please also refer to Figures 2 to 4 Optionally, the cover plate 4 includes a flange 40 and a body 41. The flange 40 and body 41 are connected, with the flange 40 protruding outward from the body 41 along the axial direction of the body 41. The second bolt 6 is threadedly connected to the flange 40. This configuration allows the second bolt 6 to secure the cover plate 4 in the radial direction of the pipe 10, providing sufficient space for a wrench to tighten the second bolt 6, making it easier for the wrench to tighten the second bolt 6. The flange 40 and body 41 can be integrally formed. The flange 40 can be located on the right end edge of the body 41.
[0055] When assembling the pipe isolator, the unfilled bladder 2 can be placed on the support ring 3, and then the bladder 2 and support ring 3 can be placed between the baffle 1 and the cover plate 4. The first bolts 5 are tightened. Then, the through pipe 7 is screwed into the baffle 1 to complete the assembly.
[0056] When using a pipe isolator, the gas inside bladder 2 can be partially released to prevent contact between bladder 2 and the inner wall of pipe 10. Once the pipe isolator is in place, bladder 2 is inflated through hose 8, allowing contact between bladder 2 and the inner wall of pipe 10 to seal pipe 10. At this point, the upstream gas inside pipe 10 can be channeled downstream through through-pipe 7. For example, the gas inside pipe 10 can be channeled through through-pipe 7 to a safe distance of 50 meters for subsequent treatment.
[0057] The above provides a detailed introduction to the pipeline isolator provided in the embodiments of this application. Those skilled in the art will appreciate that variations in the specific implementation and scope of application may occur based on the principles of the embodiments of this application. In summary, this specification should not be construed as limiting this application. All equivalent modifications or variations based on the spirit and technical concepts of this application are encompassed by the claims of this application.
Claims
1. A pipeline isolator, characterized in that: include: a fixing frame including a groove; A bladder body is embedded in the groove, and the fixing frame and the bladder body are used for sealing connection with the pipeline; as well as A through pipe is connected to the fixing frame, and the through pipe passes through the inner side and the outer side of the fixing frame.
2. The pipeline isolator according to claim 1, characterized in that: The fixing frame includes a baffle, a cover plate and a support ring, the baffle is connected to the cover plate, the baffle is used to seal the pipeline, the cover plate is used to connect to the pipeline, the support ring is clamped between the baffle and the cover plate, the baffle, the cover plate and the support ring enclose the groove, the through pipe is connected to the baffle, and the through pipe is set through the baffle, the cover plate and the support ring.
3. The pipeline isolator according to claim 2, characterized in that: The sac body further includes an air nozzle, which is penetrated by the support ring.
4. The pipeline isolator according to claim 3, characterized in that: It also includes a pressure gauge and a hose, and the hose is connected to the gas nozzle and the pressure gauge.
5. The pipeline isolator according to claim 4, characterized in that: The cover plate includes a through hole, and the through pipe and the hose are passed through the through hole.
6. The pipeline isolator according to claim 5, characterized in that: The air nozzle passes through the inner side of the support ring, and the support ring and the through hole are coaxially arranged.
7. The pipeline isolator according to claim 2, characterized in that: The utility model further includes a first bolt connecting the baffle plate and the cover plate.
8. The pipeline isolator according to claim 7, characterized in that: There are multiple first bolts, and the support ring abuts against the multiple first bolts.
9. The pipeline isolator according to claim 2, characterized in that: It also includes a second bolt, which is screwed to the cover plate, and the second bolt is used to push against the pipeline to fix the cover plate to the pipeline.
10. The pipeline isolator according to claim 9, characterized in that: The cover plate includes a flange and a body, the flange is connected to the body, the flange protrudes outward from the body along the axial direction of the body, and the second bolt is threadedly connected to the flange.