CN215568883U

CN215568883U - Auxiliary leakage-proof device for pipeline disassembly and assembly

Info

Publication number: CN215568883U
Application number: CN202122073816.5U
Authority: CN
Inventors: 王磊; 赵敬锴; 赵峰; 崔鹏; 宋宇飞; 李小龙; 孙梓杰
Original assignee: Huaneng Shandong Shidaobay Nuclear Power Co Ltd
Current assignee: Huaneng Shandong Shidaobay Nuclear Power Co Ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-01-18
Anticipated expiration: 2031-08-30

Abstract

The utility model relates to an auxiliary leakage-proof device for pipeline disassembly and assembly, which comprises: the pressing sleeve is formed by splicing a plurality of split structures along the circumferential direction, a sealing element is arranged on the inner side wall of each split structure, and the plurality of sealing elements are positioned at the same axial position of the pressing sleeve; and the connecting structure is arranged on the outer side wall of the pressing sleeve. The auxiliary leakage-proof device for disassembling and assembling the pipeline can prevent the medium in the pipeline from leaking in the process of disassembling and assembling the instrument and avoid potential safety hazards caused by the leakage.

Description

Auxiliary leakage-proof device for pipeline disassembly and assembly

Technical Field

The utility model relates to the technical field of instruments and meters, in particular to an auxiliary leakage-proof device for pipeline disassembly and assembly.

Background

When an instrument such as a thermometer or a pressure gauge is mounted in a pipeline in a dismounting manner, a medium in the pipeline is often required to be emptied, so that the condition that the medium in the pipeline leaks to cause environmental pollution or bring potential safety hazards is avoided. However, when some devices in the pipeline system are in an operating state or the pipeline design is inconvenient for emptying the medium, an operator often can only directly perform operations of disassembling the instrument and installing the instrument on the pipeline which is not emptied, and the medium in the pipeline is easy to leak in the process, which brings potential safety hazards to the operator and the pipeline equipment.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the defects that in the prior art, media in a pipeline are easy to leak in the process of dismounting and mounting instruments arranged on the pipeline, and potential safety hazards are brought to operators and equipment, so that the pipeline dismounting and mounting auxiliary leakage-proof device is provided when the instruments on the pipeline are dismounted and mounted.

In order to solve the above problems, the present invention provides an auxiliary leakage preventing device for pipeline disassembly and assembly, comprising: the pressing sleeve is formed by splicing a plurality of split structures along the circumferential direction, a sealing element is arranged on the inner side wall of each split structure, and the plurality of sealing elements are positioned at the same axial position of the pressing sleeve; and the connecting structure is arranged on the outer side wall of the pressing sleeve.

Furthermore, the inner side wall of the pressing sleeve is provided with a limiting groove extending along the circumferential direction of the pressing sleeve, and the sealing element is suitable for being installed in the limiting groove.

Further, a plurality of sealing members are in interference fit with the limiting groove.

Furthermore, one of the groove wall of the limiting groove and the outer side wall of the sealing element is provided with an anti-falling protrusion, and the other is provided with an anti-falling groove matched with the anti-falling protrusion.

Further, the joint of the pipeline comprises a small-diameter cavity and a large-diameter cavity which are sequentially arranged along the axial direction, the pressing sleeve comprises a first section suitable for being installed in the small-diameter cavity and a second section suitable for being installed in the large-diameter cavity, and the connecting structure is arranged on the second section.

Furthermore, an internal thread is arranged on the large-diameter cavity, and the connecting structure is an external thread suitable for being matched with the internal thread.

Furthermore, one end of the first section, which is far away from the second section, is provided with a plurality of elastic sealing flaps which can gather together and seal the tube cavity of the pressing sleeve.

Further, the ends of the plurality of resilient sealing flaps extend in a direction away from the second segment.

Further, the pressing sleeve comprises two split structures, and the pipeline dismounting auxiliary leakage-proof device comprises two sealing pieces.

Further, the auxiliary leakage-proof device for dismounting and mounting the pipeline further comprises a sealing gland which is detachably arranged on the end part, far away from the first section, of the second section and is suitable for covering the pipe cavity of the pressing sleeve.

The utility model has the following advantages:

according to the technical scheme, the auxiliary leakage-proof device for dismounting the pipeline mainly comprises a pressing sleeve, a sealing piece and a connecting structure. The compression sleeve can be in sealing connection with the joint of the pipeline by virtue of the connecting structure on the outer side wall of the compression sleeve, and a plurality of sealing elements arranged on the inner side wall of the compression sleeve can be compressed by the instrument when the instrument is not detached from the joint of the pipeline, so that a gap between the compression sleeve and the instrument is plugged, and the medium in the pipeline is prevented from leaking; the instrument can be restored by the elastic restoring force of the instrument after being detached from the joint of the pipeline, and the lumen of the compression sleeve is blocked, so that the medium leakage in the pipeline can not be caused. Therefore, the auxiliary leakage-proof device for disassembling and assembling the pipeline can prevent the medium in the pipeline from leaking in the process of disassembling and assembling the instrument and avoid potential safety hazards caused by the leakage.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 schematically shows a pipeline dismounting auxiliary leakage-proof device using a novel embodiment;

FIG. 2 is a split structure of the auxiliary leak-proof device for pipeline disassembly and assembly shown in FIG. 1;

FIG. 3 is a sealing member of the auxiliary leak-proof device for dismounting and mounting the pipeline shown in FIG. 1;

FIG. 4 is a front view of the seal shown in FIG. 1;

FIG. 5 is a schematic view showing a gland of the auxiliary leak-proof device for pipeline disassembly and assembly according to an embodiment of the present invention;

FIG. 6 is a side view of the gland shown in FIG. 5;

figure 7 shows schematically a prior art meter.

Description of reference numerals:

100. the pipeline is disassembled and assembled to assist the leak-proof device; 1. compressing the sleeve; 11. a split structure; 12. a connecting structure; 13. a limiting groove; 131. an anti-drop groove; 1a, a first section; 1b, a second segment; 14. an elastic sealing flap; 2. a seal member; 21. the anti-drop bulge; 3. a sealing gland; 200. a meter; 201. a probe; 202. an external thread; 203. a dial plate.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Fig. 1 schematically shows the auxiliary leakage-proof device for pipeline disassembly and assembly using the novel embodiment. Fig. 2 is a separate structure of the auxiliary leakage preventing device for pipeline assembly and disassembly shown in fig. 1. Fig. 3 is a sealing member of the auxiliary leakage preventing device for disassembling and assembling the pipeline shown in fig. 1. Fig. 4 is a front view of the seal shown in fig. 1. As shown in fig. 1, 2, 3 and 4, in the present embodiment, the auxiliary leak-proof device 100 for pipeline assembly and disassembly mainly includes a pressing sleeve 1, a sealing member 2 and a connecting structure 12. The compression sleeve 1 can be sealingly connected to the connection of the line by means of a connecting structure 12 on its outer side wall. The pressing sleeve 1 is formed by splicing a plurality of split structures 11 along the circumferential direction. This allows the compression sleeve 1 to be snapped directly onto the probe 201 of the meter 200, bypassing the larger volume dial 203 of the meter 200. Figure 7 schematically shows a prior art meter 200 and its probe 201. The plurality of split structures 11 arranged on the inner side wall of the compression sleeve 1 can be compressed by the probe 201 of the instrument 200 when the instrument 200 is not detached from the joint of the pipeline, so that a gap between the joint and the probe 201 of the instrument 200 is plugged, and the medium in the pipeline is prevented from leaking; and the instrument 200 can be restored by the elastic restoring force of the instrument after being detached from the joint of the pipeline, so that the lumen of the compression sleeve 1 is blocked, and the medium in the pipeline is prevented from leaking through the lumen of the compression sleeve 1.

The number of the split structures 11 is not limited too much, but in order to reduce the manufacturing cost of the auxiliary leak-proof device 100 for dismounting and mounting the pipeline and simplify the splicing process of the pressing sleeve 1, the pressing sleeve 1 is preferably formed by splicing two split structures 11. The plurality of split structures 11 may be connected to each other by a detachable connection method such as snap connection, but in order to simplify the manufacturing process of the compression sleeve 1, in the present embodiment, the connection structure 12 is not required to be arranged between the split structures 11. When the compression sleeve 1 is hermetically connected with the joint of the pipeline through the connecting structure 12 arranged on the outer side wall of the compression sleeve, the joint of the pipeline can limit the split structure 11 and ensure that the pipeline joint is spliced into the compression sleeve 1.

As can be seen from the above technical solutions, in the use process of the auxiliary leak-proof device 100 for detaching and installing a pipeline according to the present embodiment, an operator can first draw out the meter 200 from the joint of the pipeline, and then snap the plurality of split structures 11 of the pressing sleeve 1 onto the probe 201 of the meter 200. And the outer side wall of the compression sleeve 1 is connected with the joint in a sealing way. At the moment, the outer side wall of the compression sleeve 1 is in sealing connection with the joint of the pipeline, and the sealing element 2 on the inner side wall can be compressed by the probe 201 of the instrument 200, so that a gap between the joint and the probe 201 of the instrument 200 is sealed, and medium leakage in the pipeline is avoided. Then the meter 200 is drawn out from the joint of the pipeline, and the sealing element 2 can restore to the original state by the elastic restoring force of the sealing element, so that the pipe cavity of the compression sleeve 1 is blocked and the medium in the pipeline is prevented from leaking.

When installing the meter 200 into the junction of the pipeline, the operator can directly insert the probe 201 of the meter 200 into the compression sleeve 1. The seal 2 is compressible by the probe 201 of the meter 200 to allow the meter 200 to be inserted into a joint of a pipeline through the compression sleeve 1 while sealing off a gap between the compression sleeve 1 and the probe 201 of the meter 200. Subsequently, the plurality of separate structures 11 are taken out from the joints of the pipes, and the meter 200 is hermetically connected to the joints of the pipes, thereby completing the operation of attaching and detaching the meter 200. Therefore, the auxiliary leak-proof device 100 for pipeline assembly and disassembly of the present embodiment can prevent the medium in the pipeline from leaking during the process of assembling and disassembling the meter 200, and avoid the potential safety hazard caused by the leakage.

In the present embodiment, the sealing element 2 may be connected to the inner sidewall of the compression sleeve 1 by a hot-melting process or bonded to the inner sidewall of the compression sleeve 1. However, in order to facilitate replacement of the sealing member 2 to ensure the sealing performance of the auxiliary leak-proof device 100 for pipeline installation and removal, the inner wall of the pressing sleeve 1 is preferably provided with a limiting groove 13 extending along the circumferential direction thereof. The sealing element 2 is adapted to be fitted into the retaining groove 13.

In the present embodiment, as shown in fig. 4, the total area of the axial cross sections of the plurality of seal members 2 is larger than the axial cross section of the stopper groove 13. This enables the plurality of sealing elements 2 to be in interference fit with the limiting groove 13 when the probe 201 of the meter 200 is not inserted into the lumen of the compression sleeve 1, thereby facilitating the improvement of the sealing performance of the pipeline dismounting auxiliary leakage-proof device 100 and further reducing the risk of medium leakage in the pipeline. The number of the sealing members 2 is not limited too much, for example, in the present embodiment, in order to increase the elastic restoring force of the single sealing member 2 while saving the manufacturing cost of the sealing member 2 and simplifying the installation process of the auxiliary leak-proof device 100 for pipeline disassembly and assembly, the number of the sealing members 2 is two, and the two sealing members 2 have the same shape. This enables the two-piece seal 2 to be pressed symmetrically against the probe 201 of the meter 200, thereby reducing the risk of the probe 201 of the meter 200 being crushed by the seal 2.

In this embodiment, the joint of the pipeline includes a small-diameter cavity and a large-diameter cavity which are sequentially arranged along the axial direction. When the meter 200 is installed in a joint of a pipeline, as shown in fig. 7, a probe 201 thereof can be inserted into the small-diameter cavity, and the external thread 202 can be embedded into and hermetically connected with the large-diameter cavity. The compression sleeve 1 includes a first section 1a adapted to fit into a small diameter cavity and a second section 1b adapted to fit into a large diameter cavity. The connecting structure 12 is preferably arranged on the second section 1 b. The second section 1b of the compression sleeve 1 may optionally be capable of interference fit with a large diameter cavity of a pipeline. Preferably, however, the large diameter cavity of the fitting is provided with an internal thread and the connecting structure 12 is an external thread matching the internal thread. When the meter 200 is mounted on a joint of a pipeline, the external thread 202 on the meter 200 can be screw-fitted with the internal thread on the large-diameter cavity of the joint of the pipeline and prevent the medium in the pipeline from leaking. When the meter 200 is removed or partially removed from the joint of the pipeline, the connection structure 12 on the compression sleeve 1 can be screw-fitted with the internal thread in the large-diameter cavity, thereby preventing the medium in the pipeline from leaking.

In this embodiment, the end of the first section 1a remote from the second section 1b is provided with a plurality of resilient sealing flaps 14 capable of gathering and sealing off the lumen of the compression sleeve 1. The resilient sealing flap 14 can further reduce the risk of the medium in the line being released. Preferably, the ends of the plurality of resilient sealing flaps 14 extend in a direction away from the second section 1 b. This enables the resilient sealing flap 14 to swing in the direction of movement of the probe 201 when the probe 201 of the meter 200 is inserted into the compression sleeve 1 and facilitates insertion of the probe 201 into a fitting of a pipeline. While a plurality of resilient sealing flaps 14 can be pressed against the probe 201 and seal the gap between the inner side wall of the compression sleeve 1 and the probe 201 of the meter 200. No excessive limitation is imposed on the number of the elastic sealing flaps 14, for example, in the present embodiment, the number of the elastic sealing flaps 14 is preferably four, which can ensure that the elastic sealing flaps 14 can be attached to the probe 201 of the meter 200, and contribute to improving the sealing performance thereof,

in this embodiment. The first segment 1a is preferably made of a metal material having excellent mechanical properties, and the second segment 1b is optionally made of an elastic material and is connected to the first segment 1a through a hot-melt process, or is bonded to the first segment 1 a. When the second section 1b is made of an elastic material, the elastic sealing flap 14 is preferably of one-piece construction with the second section 1 b. The second section 1b and the resilient sealing flap 14 are preferably, but not limited to, made of a material having a certain elasticity, such as PVC. When the second segment 1b is a metal material, it is preferably provided in a structure in which the first segment 1a is integrally molded. The resilient sealing flap 14 may optionally be attached to the second segment 1b or bonded to the second segment 1b by a hot melt process.

In this embodiment, one of the groove wall of the limit groove 13 and the outer side wall of the sealing member 2 is provided with an anti-slip protrusion 21, and the other is provided with an anti-slip groove 131 matched with the anti-slip protrusion 21. This makes anticreep arch 21 and anticreep recess 131 can match and avoid deviating from in spacing recess 13 when sealing member 2 is extruded, leads to losing the sealing function to the lumen of pressing sleeve 1, has promoted the supplementary leak protection device 100's of pipeline dismouting stability of this embodiment from this.

In the present embodiment, the auxiliary leak preventer 100 for pipeline disassembly and assembly further comprises a gland 3 (see fig. 5 and 6) detachably provided on the end of the second section 1b remote from the first section 1 a. When the meter 200 is removed from the fitting of the pipeline, the operator can cover the gland 3 over the lumen of the compression sleeve 1, thereby preventing foreign objects from entering the lumen and entering the pipeline with the probe 201 of the meter 200 when the meter is inserted into the lumen. The connection relationship between the foreign matter prevention gland and the compression sleeve 1 is preferably, but not limited to, detachable connection such as clamping connection or threaded connection.

The following describes the manner of use of the auxiliary leak-proof device 100 for pipe attachment/detachment according to the present embodiment: when the instrument 200 on the pipeline needs to be disassembled and assembled, an operator rotates the instrument 200 to separate the external thread 202 on the instrument 200 from the internal thread on the large-diameter cavity. Then, the two split structures 11 are buckled on the probe 201 on the instrument 200, and the pressing sleeve 1 is rotated to enable the external thread on the second section 1b to be in threaded connection with the internal thread on the large-diameter cavity. At the moment, the outer side wall of the compression sleeve 1 is in sealing connection with the inner wall of the joint, and the sealing element 2 can be compressed by the probe 201 of the instrument 200, so that a gap between the inner wall of the compression sleeve 1 and the probe 201 of the instrument 200 is sealed, and medium leakage in a pipeline is avoided. Then, the probe 201 of the meter 200 is completely drawn out from the compression sleeve 1, and the sealing member 2 can be restored by the elastic restoring force thereof, thereby plugging the lumen of the compression sleeve 1. The sealing gland 3 is clamped on the compression sleeve 1 by an operator to prevent foreign matters from falling into the tube cavity of the compression sleeve 1 and entering the pipeline along with the probe of the instrument 200 when the instrument 200 is installed next time.

When it is desired to install the meter 200 on a joint of a pipeline, an operator may remove the gland 3 from the compression sleeve 1 and insert the probe 201 of the meter 200 into the lumen of the compression sleeve 1. The seal 2 and the resilient sealing flap 14 can in turn be compressed by the probe 201 of the meter 200 and close off the gap between the inner side wall of the compression sleeve 1 and the probe 201. Next, the two split structures 11 are detached from the joint of the pipe, and the external thread 202 of the meter 200 is screwed into the internal thread of the large-diameter cavity, so that the meter 200 is attached to the joint of the pipe.

In summary, the auxiliary leak-proof device 100 for pipeline disassembly and assembly according to the embodiment of the utility model can prevent the medium in the pipeline from leaking in the process of disassembling and assembling the meter 200, and avoid potential safety hazards caused by the leakage.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. The utility model provides a supplementary leak protection device of pipeline dismouting which characterized in that includes:

the compression sleeve (1) is formed by splicing a plurality of split structures (11) along the circumferential direction, a sealing element (2) is arranged on the inner side wall of each split structure (11), and the plurality of sealing elements (2) are located at the same axial position of the compression sleeve (1);

the connecting structure (12) is arranged on the outer side wall of the compression sleeve (1).

2. Auxiliary leak-proof device for dismounting and mounting pipeline according to claim 1, characterized in that the inner side wall of the pressing sleeve (1) is provided with a limiting groove (13) extending along the circumferential direction thereof, and the sealing element (2) is suitable for being installed in the limiting groove (13).

3. The auxiliary leak-proof device for pipeline disassembly and assembly as claimed in claim 2, wherein a plurality of sealing elements (2) are in interference fit with the limiting groove (13).

4. The auxiliary leakage-proof device for pipeline disassembly and assembly as claimed in claim 2, wherein one of the groove wall of the limit groove (13) and the outer side wall of the sealing element (2) is provided with an anti-drop protrusion (21), and the other is provided with an anti-drop groove (131) matched with the anti-drop protrusion (21).

5. Auxiliary leak-proof device for disassembly and assembly of pipelines according to any one of claims 1 to 4, characterized in that the joint of the pipeline comprises a small-diameter cavity and a large-diameter cavity arranged in sequence along the axial direction, the compression sleeve (1) comprises a first section (1a) adapted to be fitted into the small-diameter cavity and a second section (1b) adapted to be fitted into the large-diameter cavity, and the connecting structure (12) is arranged on the second section (1 b).

6. Auxiliary leak-proof device for disassembling and assembling pipelines according to claim 5, characterized in that the large diameter cavity is provided with an internal thread, and the connecting structure (12) is an external thread (202) adapted to match with the internal thread.

7. The auxiliary leakage-proof device for pipeline disassembly and assembly according to claim 5, wherein one end of the first section (1a) far away from the second section (1b) is provided with a plurality of elastic sealing flaps (14) which can gather together and block the tube cavity of the compression sleeve (1).

8. Auxiliary leak protection device for disassembly of pipeline, according to claim 7, characterized in that the ends of said plurality of elastic sealing flaps (14) extend in a direction away from said second section (1 b).

9. Pipeline disassembly and assembly auxiliary leak protection device according to any one of claims 1 to 4, characterized in that said compression sleeve (1) comprises a total of two said split structures (11), said pipeline disassembly and assembly auxiliary leak protection device (100) comprising a total of two said seals (2).

10. Auxiliary leak-proof device for disassembly and assembly of pipelines according to claim 5, characterized by further comprising a gland (3) removably arranged on the end of the second section (1b) remote from the first section (1a) and adapted to cover the lumen of the compression sleeve (1).