CN220337826U - Sealing device for pipe body - Google Patents

Abstract

The application relates to a sealing device of a pipe body, wherein a pipe orifice is arranged at the end part of the pipe body, the sealing device comprises a connecting ring, a clamping sleeve, a cover plate and a flexible sealing ring, the connecting ring is sleeved on the outer wall of the pipe body, and the distance between the connecting ring and the pipe orifice is a first distance; the clamping sleeve is sleeved on the pipe body and positioned on one side of the connecting ring, which is away from the pipe orifice, and comprises a first clamping part and a second clamping part which are detachably connected; the apron is located one side that the go-between deviates from the cutting ferrule and can dismantle with the cutting ferrule and be connected, and the apron is provided with the protection slot that is used for protecting the orificial, and the degree of depth of protection slot is the second distance, and the second distance is greater than first distance. This application seals the mouth of pipe of body through go-between, cutting ferrule and apron, and protects the mouth of pipe of body through the protection slot of apron, and the cutting ferrule is detachable connection with the apron, when needs are connected the body with other body, can dismantle apron and cutting ferrule, does not destroy the mouth of pipe, also does not influence subsequent welding effect.

Description

Sealing device for pipe body

Technical Field

The application relates to the field of pipeline connection, in particular to a sealing device of a pipe body.

Background

On a commercial air conditioning unit, a heat exchanger, a compressor, a pipeline and other parts are connected by adopting a pipe body in many times, and the pipe body is mainly connected by flange bolts and welded. The welding connection is low in cost and wide in application, but when the welding connection is adopted, the pipe orifice of the pipe body is smooth and has no connector, so that the pipe orifice of the pipe body is very difficult to seal, and a sealing plate is welded at the pipe orifice of the pipe body in the industry generally so as to be connected into a whole, thereby achieving the aim of sealing.

However, the welded sealing plates cannot be detached, when the sealed pipe body is connected with other pipe bodies, the sealing plates are required to be cut off, the operation is complex, the pipe orifice of the pipeline can be damaged, the subsequent welding quality is affected, and particularly, for parts sent to after-sale, the operation of the sealing plate sealing structure becomes more difficult due to the condition limitation of an engineering site.

Disclosure of Invention

An object of the application is to provide a sealing device of body, this seal structure can seal the mouth of pipe of body and protect the mouth of pipe, when needs are connected this body with other body, can dismantle seal structure, does not influence later stage installation effect.

To this end, the embodiment of the application provides a sealing device of body, body tip is provided with the mouth of pipe, sealing device of body includes: the connecting ring is sleeved on the outer wall of the pipe body, and the distance between the connecting ring and the pipe orifice is a first distance; the clamping sleeve is sleeved on the pipe body and positioned on one side of the connecting ring, which is away from the pipe orifice, and comprises a first clamping part and a second clamping part which are detachably connected; and the cover plate is positioned on one side of the connecting ring, which is away from the clamping sleeve, and is detachably connected with the clamping sleeve, the cover plate is provided with a protection groove for protecting the pipe orifice, the depth of the protection groove is a second distance, and the second distance is larger than the first distance.

In one possible implementation, the cover plate is provided with a mounting groove, which is located on the side of the protection groove facing the ferrule, and the connection ring is located in the mounting groove.

In one possible implementation, the ferrule further includes a first connector connecting the first clamping portion with the second clamping portion.

In one possible implementation manner, one end of the first clamping portion is hinged to one end of the second clamping portion, and the other end of the first clamping portion is connected to the other end of the second clamping portion through the first connecting piece.

In one possible implementation manner, two first connecting pieces are provided, one first connecting piece connects one end of the first clamping portion with one end of the second clamping portion, and the other first connecting piece connects the other end of the first clamping portion with the other end of the second clamping portion.

In one possible implementation manner, the first clamping portion is provided with a first yielding groove, the second clamping portion is provided with a second yielding groove, and the first yielding groove and the second yielding groove are used for yielding the first connecting piece; when the first clamping part and the second clamping part are surrounded, the first abdication groove corresponds to the second abdication groove.

In one possible implementation, a first connecting portion is provided on a face of the cover plate facing the ferrule, a second connecting portion is provided on a face of the ferrule facing the cover plate, and the first connecting portion is in threaded connection with the second connecting portion.

In one possible implementation, the cover plate further comprises a second connector, which connects the cover plate with the ferrule.

In one possible implementation, the pipe further comprises a flexible sealing ring disposed between the cover plate and the connecting ring and/or between the pipe orifice of the pipe body and the cover plate.

In one possible implementation, the cover plate is provided with an air-filling hole.

According to the sealing device of the pipe body, which is provided by the embodiment of the application, the pipe opening is formed in the end part of the pipe body, the sealing device comprises a connecting ring, a clamping sleeve, a cover plate and a flexible sealing ring, the connecting ring is sleeved on the outer wall of the pipe body, and the distance between the connecting ring and the pipe opening is a first distance; the clamping sleeve is sleeved on the pipe body and positioned on one side of the connecting ring, which is away from the pipe orifice, and comprises a first clamping part and a second clamping part which are detachably connected; the apron is located one side that the go-between deviates from the cutting ferrule and can dismantle with the cutting ferrule and be connected, and the apron is provided with the protection slot that is used for protecting the orificial, and the degree of depth of protection slot is the second distance, and the second distance is greater than first distance. This application seals the mouth of pipe of body through go-between, cutting ferrule and apron, and protects the mouth of pipe of body through the protection slot of apron, and the cutting ferrule is detachable connection with the apron, when needs are connected the body with other body, can dismantle apron and cutting ferrule, does not destroy the mouth of pipe, also does not influence subsequent welding effect.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

FIG. 1 illustrates a front view of a sealing device for a pipe body provided in an embodiment of the present application;

FIG. 2 shows an exploded view of a sealing device for a pipe body provided in an embodiment of the present application;

FIG. 3 shows a cross-sectional view of a first tube sealing device provided in an embodiment of the present application;

FIG. 4 shows a cross-sectional view of a second embodiment of a tube sealing device provided by the present application;

fig. 5 shows a cross-sectional view of a third tube sealing device provided in an embodiment of the present application.

Reference numerals illustrate:

1. a tube body; 11. a pipe orifice; 12. groove; 2. a connecting ring; 3. a cutting sleeve; 31. a first clamping part; 311. a first relief groove; 32. a second clamping part; 321. a second relief groove; 33. a first connector; 34. a second connecting portion; 4. a cover plate; 41. a protection groove; 42. a mounting groove; 43. a first connection portion; 44. an air filling hole; 5. a seal ring; 6. and a second connecting piece.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "upper," "above," "front," "rear," and the like, may be used herein to describe one element's or feature's relative positional relationship or movement to another element's or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figure experiences a position flip or a change in attitude or a change in state of motion, then the indications of these directivities correspondingly change, for example: an element described as "under" or "beneath" another element or feature would then be oriented "over" or "above" the other element or feature. Thus, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

Fig. 1 shows a front view of a sealing device for a pipe body provided in an embodiment of the present application, fig. 2 shows an exploded view of a sealing device for a pipe body provided in an embodiment of the present application, and fig. 3 shows a cross-sectional view of a sealing device for a first pipe body provided in an embodiment of the present application.

As shown in fig. 1 to 3, the embodiment of the present application provides a sealing device for a pipe body, wherein a pipe body 1 is provided with a pipe orifice 11, and the sealing device for the pipe body comprises a connecting ring 2, a clamping sleeve 3 and a cover plate 4. The connecting ring 2 is sleeved on the outer wall of the pipe body 1, and the distance between the connecting ring 2 and the pipe orifice 11 is a first distance D; the clamping sleeve 3 is sleeved on the pipe body 1 and is positioned on one side of the connecting ring 2, which is away from the pipe orifice 11, and the clamping sleeve 3 comprises a first clamping part 31 and a second clamping part 32 which are detachably connected; the apron 4 is located the one side that adapter ring 2 deviates from cutting ferrule 3 and can dismantle with cutting ferrule 3 and be connected, and apron 4 is provided with protection groove 41, and the degree of depth of protection groove 41 is second distance L, and second distance L is greater than first distance D.

It should be understood that the end of the pipe body 1 is provided with a pipe orifice 11, the pipe body 1 is provided with a groove 12 at the pipe orifice 11 end, and the groove 12 is more convenient to connect with other pipe bodies 1.

The sealing device of the pipe body comprises a connecting ring 2, a clamping sleeve 3 and a cover plate 4, wherein the connecting ring 2 is positioned at one end of the pipe body 1, which is provided with a pipe orifice 11, the connecting ring 2 is sleeved on the pipe body 1 by a hard material and fixedly connected with the inner wall of the pipe body 1, and the connecting mode can be welding or integrally formed.

The cutting ferrule 3 includes first joint portion 31 and the second joint portion 32 that can dismantle the connection, is formed with the inner chamber that is used for overlapping to establish body 1 after first joint portion 31 encloses with second joint portion 32, and during the installation, with at least one end of first joint portion 31 and second joint portion 32 separately, place body 1 between first joint portion 31 and second joint portion 32, then fixed with first joint portion 31 and second joint portion 32, is connected with body 1 about cutting ferrule 3. Wherein the ferrule 3 is mounted to the side of the coupling ring 2 facing away from the nozzle 11.

The cover plate 4 is located one side of the connecting ring 2, which is away from the clamping sleeve 3, and one side of the cover plate 4, which faces the connecting ring 2, is provided with a protection groove 41, and when the pipe body is installed, one end of the pipe body 1, which is provided with the pipe orifice 11, extends into the protection groove 41. The distance between the connecting ring 2 and the nozzle 11 is a first distance D, the depth of the protection groove 41 is a second distance L, and the second distance L is greater than the first distance D, so that the nozzle 11 does not make any contact with the inner wall of the protection groove 41, i.e. the nozzle 11 is protected. Wherein the inner diameter of the protection groove 41 is slightly larger than the outer diameter of the pipe body 1 so that the pipe body 1 extends into the protection groove.

The connecting ring 2 can also be made of flexible materials, such as rubber or silica gel, the connecting ring 2 is detachably connected with the pipe body 1, and when the clamping sleeve 3 and the cover plate 4 clamp and fix the connecting ring 2, the connecting ring 2 is tightly contacted with the clamping sleeve 3 and the cover plate 4, so that the pipe body 1 is sealed and fixed.

Or the connecting ring 2 can be made of hard materials, and the two surfaces of the connecting ring 2, which are respectively contacted with the clamping sleeve 3 and the cover plate 4, are flexible surfaces, so that the pipe body 1 can be sealed and fixed.

The cross sections of the ferrule 3 and the cover plate 4 may be rectangular, circular or any other shape, and in one example, the cross sections of the ferrule 3 and the cover plate 4 are circular, i.e. the first clamping portion 31 and the second clamping portion 32 are all arc-shaped. The ferrule 3 and the cover plate 4 are respectively located at two sides of the connecting ring 2 along the axial direction of the pipe body 1, and the outer peripheral sides of the ferrule 3 and the cover plate 4 are protruded out of the outer peripheral sides of the connecting ring 2, so that the ferrule 3 is detachably connected with the cover plate 4, and in one example, the outer diameters of the ferrule 3 and the cover plate 4 are larger than the outer diameter of the connecting ring 2.

This application seals the mouth of pipe 11 of body 1 through go-between 2, cutting ferrule 3 and apron 4, and protects the mouth of pipe 11 of body 1 through the protection slot 41 of apron 4, and cutting ferrule 3 and apron 4 are detachable connection, when needs are connected body 1 with other body 1, can dismantle apron 4 and cutting ferrule 3, do not destroy the setting of mouth of pipe 11, do not also influence subsequent welding effect.

In some alternative embodiments, the cover plate 4 is provided with a mounting groove 42, the mounting groove 42 being located on the side of the protection groove 41 facing the ferrule 3, the connection ring 2 being located in the mounting groove 42. The mounting groove 42 is arranged coaxially with the protective groove 41, and the groove diameter of the mounting groove 42 is larger than that of the protective groove 41 so that the connecting ring 2 extends into the mounting groove 42. The connecting ring 2 is abutted against the inner wall of the mounting groove 42, so that the pipe body 1 is further sealed, and the sealing effect of the pipe body 1 is improved. Simultaneously, go-between 2 are located mounting groove 42, can make apron 4 and cutting ferrule 3 butt, further improve the sealed effect of this application. The cover plate 4 does not contact the clamping sleeve 3, and specific requirements are not required in the application.

In some alternative embodiments, the ferrule 3 further comprises a first connector 33, the first connector 33 connecting the first clamping portion 31 with the second clamping portion 32. The first connection 33 is arranged perpendicularly to the axial direction of the tube body 1, the first connection 33 being a screw or a pin, in one example the first connection 33 being a screw.

The first connecting piece 33 passes through the first clamping portion 31, stretches into the second clamping portion 32 and is connected with the second clamping portion 32, wherein a through hole for connecting the first connecting piece 33 by the second clamping portion 32 can be a threaded hole, namely, the first connecting piece 33 is in threaded connection with the second clamping portion 32, a through hole for connecting the first connecting piece 33 by the second clamping portion 32 can also be a through hole, and when one end of the first connecting piece 33 passing through the second clamping portion 32 is locked by a nut.

Or the first connecting piece 33 passes through the first clamping portion 31 from the second clamping portion 32 and is connected with the first clamping portion 31, wherein the through hole of the first clamping portion 31 for connecting the first connecting piece 33 can be a threaded hole, that is, the first connecting piece 33 is in threaded connection with the first clamping portion 31, the through hole of the first clamping portion 31 for connecting the first connecting piece 33 can also be a through hole, and when one end of the first connecting piece 33 passing through the first clamping portion 31 is locked by a nut.

In some alternative embodiments, one end of the first clamping portion 31 is hinged to one end of the second clamping portion 32, and the other end of the first clamping portion 31 is connected to the other end of the second clamping portion 32 through the first connecting member 33. The hinge shafts of the first clamping part 31 and the second clamping part 32 are positioned on the outer peripheral sides of the first clamping part 31 and the second clamping part 32, so that the inner cavity of the clamping sleeve 3 is not affected, and the first clamping part 31 and the second clamping part 32 are convenient to install and detach. The other ends of the first and second clamping portions 31 and 32 are detachably connected by a first connecting member 33.

In some alternative embodiments, two first connecting members 33 are provided, one first connecting member 33 connects one end of the first clamping portion 31 with one end of the second clamping portion 32, and the other first connecting member 33 connects the other end of the first clamping portion 31 with the other end of the second clamping portion 32. That is, both ends of the first clamping portion 31 and the second clamping portion 32 are separable, and when connected, both ends of the first clamping portion 31 and the second clamping portion 32 are connected by two first connecting pieces 33.

In some alternative embodiments, the first clamping portion 31 is provided with a first yielding groove 311, the second clamping portion 32 is provided with a second yielding groove 321, and the first yielding groove 311 and the second yielding groove 321 are used for yielding to the first connecting piece 33; when the first clamping portion 31 and the second clamping portion 32 are surrounded, the first yielding groove 311 corresponds to the second yielding groove 321.

The extending direction of the first yielding groove 311 and the second yielding groove 321 are perpendicular to the axial direction of the pipe body 1, when the first clamping portion 31 and the second clamping portion 32 are surrounded, the first yielding groove 311 corresponds to the second yielding groove 321, so that the first connecting piece 33 stretches into, the first yielding groove 311 and the second yielding groove 321 enable the first connecting piece 33 to have enough installation space, the length of the first connecting piece 33 can be shortened, the first connecting piece 33 can be conveniently arranged, and the first connecting piece 33 can be protected.

When the first connector 33 is provided with one, the first relief groove 311 and the second relief groove 321 are provided with one. When the first connector 33 is provided with two, the first relief groove 311 and the second relief groove 321 are provided with two, respectively.

In order to improve the stability of the connection of the first and second clamping portions 31 and 32 with the pipe body 1, the inner walls of the first and second clamping portions 31 and 32 may be further provided with a spacer, such as a sponge or the like.

Referring to fig. 4 and 5, fig. 4 is a cross-sectional view showing a sealing device for a second type of tube according to an embodiment of the present application, and fig. 5 is a cross-sectional view showing a sealing device for a third type of tube according to an embodiment of the present application. In some alternative embodiments, the side of the cover plate 4 facing the ferrule 3 is provided with a first connection 43, and the side of the ferrule 3 facing the cover plate 4 is provided with a second connection 34, the first connection 43 being in threaded connection with the second connection 34.

In one example, the first connecting portion 43 is a convex ring, the first connecting portion 43 and the cover plate 4 are integrally formed, the outer wall of the first connecting portion 43 is provided with external threads, and the second connecting portion 34 is an annular thread groove adapted to the first connecting portion 43, that is, the first clamping portion 31 and the second clamping portion 32 are both provided with thread grooves. When the cover plate 4 is connected with the clamping sleeve 3, the first connecting part 43 extends into the inner cavity of the second connecting part 34 and is in threaded connection with the clamping sleeve 3.

In one example, the second connecting portion 34 is a convex ring, the second connecting portion 34 and the ferrule 3 are integrally formed, that is, the first clamping portion 31 and the second clamping portion 32 are both provided with protrusions, the outer wall of the second connecting portion 34 is provided with external threads, and the first connecting portion 43 is an annular thread groove adapted to the second connecting portion 34. When the cover plate 4 is connected with the clamping sleeve 3, the second connecting part 34 extends into the inner cavity of the first connecting part 43 and is in threaded connection with the cover plate 4.

Referring to fig. 1-5, in some alternative embodiments, a second connector 6 is further included, the second connector 6 connecting the cover plate 4 with the ferrule 3. The second connecting member 6 extends in the axial direction of the pipe body 1. The second connecting member 6 may be a screw or a pin, and in one example, the second connecting member 6 is a screw.

In one example, the second connector 6 is connected to the ferrule 3 by passing through the cover plate 4, wherein the hole through which the ferrule 3 passes through the second connector 6 may be a threaded hole, the second connector 6 is connected to the ferrule by threads, the hole through which the ferrule 3 passes through the second connector 6 may be a through hole, and the second connector 6 passes through the ferrule 3 and is connected by a nut.

In one example, the second connector 6 is connected to the cover plate 4 by passing through the ferrule 3, wherein the hole of the cover plate 4 through which the second connector 6 passes may be a threaded hole, the second connector 6 is connected to the ferrule by threads, the hole of the cover plate 4 through which the second connector 6 passes may be a through hole, and the second connector 6 passes through the cover plate 4 and is connected by a nut.

In some alternative embodiments, the second connecting members 6 are provided in a plurality, and the plurality of second connecting members 6 are spaced around the central axis of the cover plate 4. The provision of a plurality of second connecting elements 6 improves the effect of the connection of the cover plate 4 to the ferrule 3. In one example, the second connection 6 is provided with four.

In some alternative embodiments, a flexible sealing ring 5 is also included, arranged between the cover plate 4 and the connection ring 2, and/or between the spout 11 and the cover plate 4.

The material of the sealing ring 5 is flexible, such as rubber or silica gel, in one example, the sealing ring 5 may be provided with one, the sealing ring 5 is located in the protection groove 41, and the sealing ring 5 is abutted with the pipe orifice 11 and the cover plate 4, so as to seal the pipe orifice 1, and the sealing ring 5 is flexible, i.e. the sealing ring 5 cannot damage the pipe orifice 11. However, if the thickness of the pipe body 1 is relatively thin, the arrangement of the groove 12 can make the stress area of the pipe orifice 11 to the sealing ring 5 relatively small, so that the sealing ring 5 is easy to break.

In one example, the sealing ring 5 may be provided with one sealing ring 5, and the sealing ring 5 is sleeved on the pipe body 1 and is located between the cover plate 4 and the connecting ring 2, and the cover plate 4 and the connecting ring 2 clamp and fix the sealing ring 5 so as to seal the pipe body 1.

In one example, two sealing rings 5 are provided, one in the protection groove 41, and the sealing rings 5 are in abutment with the nozzle 11 and the cover plate 4; the other is positioned between the cover plate 4 and the connecting ring 2, and the cover plate 4 and the connecting ring 2 clamp and fix the sealing ring 5. Further improving the sealing effect of the present application on the pipe body 1.

In some alternative embodiments, the cover plate 4 is provided with an air-filling hole 44. The air-filling hole 44 penetrates the cover plate 4 along the thickness direction of the cover plate 4, and an operator can fill the inner cavity of the pipe body 1 through the air-filling hole 44. The air-filling hole 44 may not be provided as needed. Wherein, the inflation hole 44 is provided with a step shape so as to be abutted with an external inflation nozzle.

Further, a seal may be provided to seal the air charge hole 44, such as a rubber stopper or screw.

Wherein, the sealing member can also be cubic and be located the inner chamber of protection groove 41, is provided with the mounting panel in the protection groove 41, and the sealing member passes through the spring to be connected with the mounting panel, when needs are inflated, and the charging connector stretches into in the inflation hole 44 and compresses the spring to aerify the inner chamber of pipe 1, when not needing to be inflated, the charging connector stretches out in the inflation hole 44, and the spring kick-backs, makes the sealing member carry out the shutoff to the inflation hole 44.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A sealing device for a pipe body, the pipe body end being provided with a pipe orifice, characterized in that the sealing device for a pipe body comprises:

the connecting ring is sleeved on the outer wall of the pipe body, and the distance between the connecting ring and the pipe orifice is a first distance;

the clamping sleeve is sleeved on the pipe body and positioned on one side of the connecting ring, which is away from the pipe orifice, and comprises a first clamping part and a second clamping part which are detachably connected; and

the cover plate is positioned on one side, away from the clamping sleeve, of the connecting ring and is detachably connected with the clamping sleeve, the cover plate is provided with a protection groove for protecting the pipe orifice, the depth of the protection groove is a second distance, and the second distance is larger than the first distance.

2. A sealing arrangement for a pipe body according to claim 1, characterized in that the cover plate is provided with a mounting groove in which the connection ring is located on the side of the protection groove facing the clamping sleeve.

3. A tube sealing device as claimed in claim 1, wherein the ferrule further comprises a first connector connecting the first and second clamping portions.

4. A sealing device for a pipe body according to claim 3, wherein one end of the first clamping portion is hinged to one end of the second clamping portion, and the other end of the first clamping portion is connected to the other end of the second clamping portion through the first connecting member.

5. A sealing device for a pipe body according to claim 3, wherein two first connecting members are provided, one of the first connecting members connects one end of the first clamping portion with one end of the second clamping portion, and the other of the first connecting members connects the other end of the first clamping portion with the other end of the second clamping portion.

6. A sealing device for a pipe body according to claim 3, wherein the first clamping portion is provided with a first yielding groove, the second clamping portion is provided with a second yielding groove, and the first yielding groove and the second yielding groove are used for yielding the first connecting piece; when the first clamping part and the second clamping part are surrounded, the first abdication groove corresponds to the second abdication groove.

7. A sealing device for a pipe body according to claim 1, wherein a first connecting portion is provided on a face of the cover plate facing the ferrule, a second connecting portion is provided on a face of the ferrule facing the cover plate, and the first connecting portion is screwed with the second connecting portion.

8. A sealing device for a tubular body according to claim 1, further comprising a second connector connecting the cover plate with the ferrule.

9. A sealing arrangement for a pipe body according to claim 1, further comprising a flexible sealing ring arranged between the cover plate and the connecting ring and/or between the pipe orifice of the pipe body and the cover plate.

10. A sealing arrangement for a pipe body according to claim 1, characterized in that the cover plate is provided with an air filling hole.