Pipeline connecting device and gas conveying pipeline

Abstract

The invention provides a pipeline connecting device and a gas conveying pipeline, and the pipeline connecting device comprises a first flange plate; a second flange plate; a fastener; the first cover body is arranged on the outer side of the first flange plate in a covering mode, and the first cover body is movably arranged in the axis direction of the first pipeline; the second cover body covers the outer side of the second flange plate; the adjusting ring is movably arranged on the first pipeline and connected to the side, away from the second cover body, of the first cover body, and the adjusting ring has an abutting state and a releasing state; and when the adjusting ring is in the abutting state and moves towards the second pipeline, the first cover body and the second cover body are pushed to abut against each other and are in sealing fit with each other. According to the technical scheme, the problem that the sealing performance is poor when the first pipeline and the second pipeline are connected due to the fact that a fastener is exposed in the related technology is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline connection, and in particular to a pipeline connection device and a gas transmission pipeline. Background Art

[0002] The pipeline is used to transport liquid and gas, and the two pipelines can be connected through a flange. In the related art, the first pipeline and the second pipeline are connected through a first flange and a second flange, and the first flange and the second flange are fixedly connected by fasteners.

[0003] However, since the fasteners are metal parts, exposing the fasteners to the outside may easily cause corrosion to the fasteners, thereby affecting the connection reliability between the first flange and the second flange, and easily affecting the sealing when the first pipe and the second pipe are connected. Summary of the invention

[0004] The main purpose of the present invention is to provide a pipeline connection device and a gas delivery pipeline to solve the problem in the related art that the fasteners are exposed to the outside, resulting in poor sealing when the first pipeline and the second pipeline are connected.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a pipeline connecting device, which is connected between a first pipeline and a second pipeline, and the pipeline connecting device includes: a first flange, which is arranged at one end of the first pipeline; a second flange, which is arranged at one end of the second pipeline; a fastener, which is used to connect the first flange and the second flange; a first cover, which is arranged on the outside of the first flange and the first cover is movably arranged along the axial direction of the first pipeline; a second cover, which is arranged on the outside of the second flange; an adjusting ring, which is movably arranged on the first pipeline and connected to the side of the first cover away from the second cover, and the adjusting ring has an abutting state and a releasing state; wherein, when the adjusting ring is in the abutting state, the adjusting ring moves toward the second pipeline to push the first cover to abut against the second cover and seal; when the adjusting ring is in the releasing state, the adjusting ring moves away from the second pipeline to drive the first cover to separate and fit with the second cover.

[0006] Furthermore, the pipeline connecting device also includes a clamping piece connected between the first cover body and the second cover body, the clamping piece includes a clamping sleeve and a clamping rod that can be inserted into the clamping sleeve and clamped with the clamping sleeve, the clamping sleeve is arranged on one of the first cover body and the second cover body, and the clamping rod is arranged on the other of the first cover body and the second cover body.

[0007] Furthermore, the clamping rod includes a rod body, a clamping block floatably arranged on the rod body, and an ejection elastic member connected between the rod body and the clamping block. The clamping sleeve is provided with a clamping hole penetrating the side wall of the clamping sleeve; the clamping block has a clamping position and an avoidance position. When the clamping block is in the clamping position, the clamping block protrudes from the outer wall of the rod body and extends into the clamping hole, so that the clamping rod and the clamping sleeve are clamped and matched; when the clamping block is in the avoidance position, the clamping block is disengaged from the clamping hole, and the clamping block abuts and cooperates with the inner side wall of the clamping sleeve, so that the clamping rod can be taken out of the clamping sleeve.

[0008] Furthermore, the pipe connecting device also includes an unlocking plate movably mounted on the outside of the clamping sleeve along the axial direction of the clamping sleeve and a connecting elastic member connected between the unlocking plate and the clamping sleeve, the unlocking plate is provided with a through hole, and the clamping sleeve is located in the through hole; a guide slope is provided on the outer wall of the clamping block, and the guide slope is gradually inclined outward from the direction close to the unlocking plate to the direction away from the unlocking plate, and the unlocking plate moves toward the clamping rod so that the side wall of the through hole abuts against the guide slope, so that the clamping block switches from the clamping position to the avoidance position.

[0009] Furthermore, the pipeline connecting device also includes a first mounting ring arranged on the first cover body and a second mounting ring arranged on the second cover body, the clamping sleeve is arranged on one of the first mounting ring and the second mounting ring, and the clamping rod is arranged on the other of the first mounting ring and the second mounting ring.

[0010] Furthermore, a first guide groove extending along the axial direction of the first pipe is provided on the outer wall of the first pipe, and a first guide block capable of extending into the first guide groove and cooperating with the guidance of the first guide groove is provided on the first cover body; and / or a second guide groove extending along the axial direction of the second pipe is provided on the outer wall of the second pipe, and a second guide block capable of extending into the second guide groove and cooperating with the guidance of the second guide groove is provided on the second cover body.

[0011] Furthermore, the inner wall of the first cover body and part of the outer wall of the first pipe form a first cavity, and the inner wall of the second cover body and part of the outer wall of the second pipe form a second cavity; when the first cover body and the second cover body are abutted and matched, the first cavity and the second cavity are connected to form a closed cavity, and a sealant layer is provided in the closed cavity, and the sealant layer covers the outside of the first flange and the second flange.

[0012] Furthermore, a glue injection inlet is arranged on the first cover body and / or the second cover body, and a glue overflow outlet is arranged on the first cover body and / or the second cover body, and the glue injection inlet and the glue overflow outlet are arranged at intervals.

[0013] Furthermore, a plug-in structure is provided between the first cover body and the second cover body, and the plug-in structure includes an annular groove and a convex ring that can be inserted into the annular groove. The annular groove is provided on one of the first cover body and the second cover body, and the convex ring is provided on the other of the first cover body and the second cover body.

[0014] According to another aspect of the present invention, a gas delivery pipeline is provided, comprising a first pipeline, a second pipeline and a pipeline connecting device connected between the first pipeline and the second pipeline, wherein the pipeline connecting device is the above-mentioned pipeline connecting device.

[0015] By applying the technical solution of the present invention, a pipeline connection device is connected between a first pipeline and a second pipeline. The pipeline connection device includes: a first flange, a second flange, a fastener, a first cover, a second cover and an adjustment ring. The first flange is arranged at one end of the first pipeline. The second flange is arranged at one end of the second pipeline. The fastener is used to connect the first flange and the second flange. The first cover is arranged on the outside of the first flange, and the first cover is movably arranged along the axial direction of the first pipeline. The second cover is arranged on the outside of the second flange. The adjustment ring is movably arranged on the first pipeline and connected to the side of the first cover away from the second cover, and the adjustment ring has an abutting state and a releasing state. Wherein, when the adjustment ring is in the abutting state, the adjustment ring pushes the first cover to abut against the second cover and seal when moving toward the second pipeline. When the adjustment ring is in the releasing state, the adjustment ring moves away from the second pipeline to drive the first cover to separate and match with the second cover. In this way, after the first pipeline is connected to the second pipeline, the first cover and the second cover can be covered on the outside of the first flange, the second flange and the fastener to reduce the exposure of the fastener. Furthermore, the setting of the adjustment ring facilitates pushing the first cover body to move toward the second cover body, so that the first cover body and the second cover body can fit more closely, thereby better protecting the first flange, the second flange and the fastener. Therefore, by setting the first cover body, the second cover body and the adjustment ring, the first flange, the second flange and the fastener can be isolated from the outside, reducing the possibility of corrosion of the fastener, thereby improving the reliability of the connection between the first flange and the second flange, so that the sealing performance of the first pipe and the second pipe when connected is better. Therefore, the technical solution of the present application effectively solves the problem in the related art that the fastener is exposed to the outside, resulting in poor sealing performance when the first pipe and the second pipe are connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a gas delivery pipeline according to the present invention is shown;

[0018] Figure 2 Shows Figure 1 A schematic diagram of the three-dimensional structure of a gas transmission pipeline in a cross-sectional view;

[0019] Figure 3 Shows Figure 1 A schematic diagram of the three-dimensional structure of a gas delivery pipeline when the clamping member is cut away;

[0020] Figure 4 Shows Figure 3 A partial enlarged view of point A of the gas delivery pipeline.

[0021] The above drawings include the following reference numerals:

[0022] 1. First pipeline; 2. Second pipeline; 3. First guide groove; 4. Adjustment ring; 5. First cover body; 6. Second cover body; 7. First mounting ring; 8. Second mounting ring; 9. Snap sleeve; 10. Snap rod; 11. Unlocking plate; 12. Fastener; 121. First flange; 122. Second flange; 13. Glue injection inlet; 14. Glue overflow outlet; 15. Block; 16. Ejection elastic member; 17. Snap hole; 18. Connecting elastic member. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0026] like Figures 1 to 4 As shown, the technical solution of this embodiment is applied, and the pipeline connection device is connected between the first pipeline 1 and the second pipeline 2. The pipeline connection device includes: a first flange 121, a second flange 122, a fastener 12, a first cover 5, a second cover 6 and an adjustment ring 4. The first flange 121 is arranged at one end of the first pipeline 1. The second flange 122 is arranged at one end of the second pipeline 2. The fastener 12 is used to connect the first flange 121 and the second flange 122. The first cover 5 is covered on the outside of the first flange 121, and the first cover 5 is movably arranged along the axial direction of the first pipeline 1. The second cover 6 is covered on the outside of the second flange 122. The adjustment ring 4 is movably arranged on the first pipeline 1 and connected to the side of the first cover 5 away from the second cover 6, and the adjustment ring 4 has an abutting state and a releasing state. Among them, when the adjustment ring 4 is in the abutting state, when the adjustment ring 4 moves toward the second pipeline 2, it pushes the first cover 5 and the second cover 6 to abut and seal. When the adjusting ring 4 is in the released state, the adjusting ring 4 moves away from the second pipe 2 to drive the first cover body 5 and the second cover body 6 to separate and fit.

[0027] In this way, when the first pipe 1 is connected to the second pipe 2, the first cover body 5 and the second cover body 6 can be covered on the outside of the first flange 121, the second flange 122 and the fastener 12 to reduce the exposure of the fastener 12 to the outside. In addition, the setting of the adjustment ring 4 facilitates the first cover body 5 to move toward the second cover body 6, so that the first cover body 5 and the second cover body 6 can be more closely matched, thereby better protecting the first flange 121, the second flange 122 and the fastener 12. Therefore, through the setting of the first cover body 5, the second cover body 6 and the adjustment ring 4, the first flange 121, the second flange 122 and the fastener 12 can be isolated from the outside, reducing the possibility of corrosion of the fastener 12, thereby improving the reliability of the connection between the first flange 121 and the second flange 122, so that the sealing performance of the first pipe 1 and the second pipe 2 is better when connected. Therefore, the technical solution of this embodiment effectively solves the problem of exposing the fastener to the outside in the related art, resulting in poor sealing performance when the first pipe and the second pipe are connected.

[0028] In this embodiment, an internal thread is provided on the inner wall of the adjusting ring 4, and an external thread is provided on the outer wall of the first pipe 1. The adjusting ring 4 rotates to move on the first pipe 1. An annular groove is provided on one end of the adjusting ring 4 facing the first cover 5, and an annular hook is provided on the surface of the first cover 5 facing the adjusting ring 4. The annular groove cooperates with the annular hook so that the adjusting ring 4 can drive the first cover 5 to move when it moves. The fasteners are bolts and nuts.

[0029] like Figures 1 to 4 As shown, the pipe connection device further includes a clamping member connected between the first cover body 5 and the second cover body 6. The clamping member includes a clamping sleeve 9 and a clamping rod 10 that can be inserted into the clamping sleeve 9 and clamped with the clamping sleeve 9. The clamping sleeve 9 is arranged on the first cover body 5, and the clamping rod 10 is arranged on the second cover body 6. The arrangement of the clamping member makes the connection between the first cover body 5 and the second cover body 6 more reliable, so as to further improve the sealing performance when the first pipe 1 and the second pipe 2 are connected. The structure of the clamping sleeve 9 and the clamping rod 10 is simple and easy to process.

[0030] In other embodiments, the clamping sleeve 9 is disposed on the second cover body 6 , and the clamping rod 10 is disposed on the second cover body 6 .

[0031] like Figures 1 to 4As shown, the clamping rod 10 includes a rod body, a clamping block 15 which can be floatably arranged on the rod body, and an ejection elastic member 16 connected between the rod body and the clamping block 15. The clamping sleeve 9 is provided with a clamping hole 17 which penetrates the side wall of the clamping sleeve 9. The clamping block 15 has a clamping position and an escape position. When the clamping block 15 is in the clamping position, the clamping block 15 protrudes from the outer wall of the rod body and extends into the clamping hole 17, so that the clamping rod 10 is clamped and matched with the clamping sleeve 9. When the clamping block 15 is in the escape position, the clamping block 15 is disengaged from the clamping hole 17, and the clamping block 15 is abutted and matched with the inner side wall of the clamping sleeve 9, so that the clamping rod 10 can be taken out of the clamping sleeve 9. The structure of the rod body, the clamping block 15, the ejection elastic member 16 and the clamping hole 17 is simple, which is convenient for the clamping and matching of the clamping rod 10 and the clamping sleeve 9.

[0032] like Figures 1 to 4 As shown, the pipeline connection device also includes an unlocking plate 11 movably sleeved outside the clamping sleeve 9 along the axial direction of the clamping sleeve 9 and a connecting elastic member 18 connected between the unlocking plate 11 and the clamping sleeve 9. A through hole is provided on the unlocking plate 11, and the clamping sleeve 9 is located in the through hole. A guide slope is provided on the outer wall of the clamping block 15, and the guide slope is gradually inclined outward from the direction close to the unlocking plate 11 to the direction away from the unlocking plate 11. The unlocking plate 11 moves toward the clamping rod 10 so that the side wall of the through hole abuts and cooperates with the guide slope, so that the clamping block 15 is switched from the clamping position to the avoidance position. The arrangement of the unlocking plate 11 and the guide slope enables the side wall of the through hole on the unlocking plate 11 to abut and cooperate with the guide slope when the unlocking plate 11 moves, so that the clamping block 15 is switched to the avoidance position, so that the clamping block 15 can be disengaged from the clamping hole 17, so that the clamping rod 10 can be taken out of the clamping sleeve 9, so that the first cover body 5 can be separated from the second cover body 6.

[0033] In this embodiment, there are multiple clamping members arranged around the outside of the first cover body 5, and the multiple clamping members are arranged at intervals along the circumference of the first cover body 5. There are multiple through holes on the unlocking plate 11, and the multiple through holes are arranged one-to-one with the multiple clamping members. In this way, when the unlocking plate 11 moves, the clamping blocks 15 of the multiple clamping members can be switched to the avoidance position at the same time, so that the first cover body 5 can be separated from the second cover body 6. The above arrangement makes the operation of separating the first cover body 5 from the second cover body 6 simple and fast. The ejection elastic member 16 and the connection elastic member 18 are both springs.

[0034] like Figures 1 to 4 As shown, the pipeline connection device also includes a first mounting ring 7 provided on the first cover body 5 and a second mounting ring 8 provided on the second cover body 6. The clamping sleeve 9 is provided on the first mounting ring 7, and the clamping rod 10 is provided on the second mounting ring 8. The provision of the first mounting ring 7 facilitates the connection between the clamping sleeve 9 and the first cover body 5, and the provision of the second mounting ring 8 facilitates the connection between the clamping rod 10 and the second cover body 6.

[0035] In other embodiments, the clamping sleeve 9 is arranged on the second mounting ring 8 , and the clamping rod 10 is arranged on the first mounting ring 7 .

[0036] like Figures 1 to 4 As shown, the outer wall of the first pipe 1 is provided with a first guide groove 3 extending along the axial direction of the first pipe 1, and the first cover body 5 is provided with a first guide block capable of extending into the first guide groove 3 and guiding and cooperating with the first guide groove 3. The provision of the first guide groove 3 and the first guide block enables the first cover body 5 to move along the guiding direction of the first guide groove 3, thereby reducing the rotation of the first cover body 5 around the axis of the first pipe 1, thereby reducing the wear between the first cover body 5 and the first pipe 1, and further improving the protection performance of the first cover body 5 on the first flange 121 and the fastener 12. The outer wall of the second pipe 2 is provided with a second guide groove extending along the axial direction of the second pipe 2, and the second cover body 6 is provided with a second guide block capable of extending into the second guide groove and guiding and cooperating with the second guide groove. The setting of the second guide groove and the second guide block enables the second cover body 6 to move along the guide direction of the second guide groove, reducing the rotation of the second cover body 6 around the axis of the second pipe 2, thereby reducing the wear between the second cover body 6 and the second pipe 2, and further improving the protection performance of the second cover body 6 to the second flange 122 and the fastener 12.

[0037] In other embodiments, the outer wall of the first pipe 1 is provided with a first guide groove 3 extending along the axial direction of the first pipe 1, and the first cover body 5 is provided with a first guide block capable of extending into the first guide groove 3 and guidingly cooperating with the first guide groove 3. Alternatively, the outer wall of the second pipe 2 is provided with a second guide groove extending along the axial direction of the second pipe 2, and the second cover body 6 is provided with a second guide block capable of extending into the second guide groove and guidingly cooperating with the second guide groove.

[0038] like Figures 1 to 4 As shown, the inner wall of the first cover body 5 and part of the outer wall of the first pipe 1 enclose a first cavity, and the inner wall of the second cover body 6 and part of the outer wall of the second pipe 2 enclose a second cavity. When the first cover body 5 and the second cover body 6 are in abutment with each other, the first cavity and the second cavity are connected and set to form a closed cavity, and a sealant layer is provided in the closed cavity, and the sealant layer covers the outside of the first flange 121 and the second flange 122. The provision of the sealant layer can further protect the first flange 121, the second flange 122 and the fastener 12, avoid the possibility of external water contacting the first flange 121, the second flange 122 and the fastener 12, and reduce the possibility of corrosion of the first flange 121, the second flange 122 and the fastener 12, thereby improving the sealing performance when the first pipe 1 and the second pipe 2 are connected.

[0039] like Figures 1 to 4 As shown, a glue injection inlet 13 is provided on the first cover body 5, and a glue overflow port 14 is provided on the second cover body 6, and the glue injection inlet 13 and the glue overflow port 14 are arranged at intervals. The setting of the glue injection inlet 13 facilitates the colloid of the sealant layer to enter the closed cavity from the glue injection inlet 13. The setting of the glue overflow port 14 facilitates that after the colloid of the sealant layer fills the closed cavity, the excess colloid of the sealant layer can overflow from the glue overflow port 14, so that the colloid of the sealant layer can better fill the closed cavity.

[0040] In this embodiment, when the colloid of the sealant layer is injected from the injection inlet 13, the first cover body 5 and the second cover body 6 are knocked to make the colloid of the sealant layer better fill into the closed cavity. After the closed cavity is filled with the colloid of the sealant layer, it overflows from the overflow port 14.

[0041] In other embodiments, the second cover body 6 is provided with a glue injection inlet 13, and the first cover body 5 is provided with a glue overflow port 14. Alternatively, both the first cover body 5 and the second cover body 6 are provided with a glue injection inlet 13, and both the first cover body 5 and the second cover body 6 are provided with a glue overflow port 14. Alternatively, the first cover body 5 is provided with a glue injection inlet 13 and a glue overflow port 14. Alternatively, the second cover body 6 is provided with a glue injection inlet 13 and a glue overflow port 14.

[0042] like Figures 1 to 4 As shown, a plug-in structure is provided between the first cover body 5 and the second cover body 6, and the plug-in structure includes an annular groove and a convex ring that can be inserted into the annular groove. The annular groove is provided on the first cover body 5, and the convex ring is provided on the second cover body 6. The provision of the convex ring and the annular groove makes the connection between the first cover body 5 and the second cover body 6 tighter, and further improves the sealing performance of the first cover body 5 and the second cover body 6. The structure of the convex ring and the annular groove is simple and easy to process.

[0043] In other embodiments, the annular groove is provided on the second cover body 6 , and the convex ring is provided on the first cover body 5 .

[0044] The present application also provides a gas delivery pipeline, which includes a first pipeline 1, a second pipeline 2, and a pipeline connection device connected between the first pipeline 1 and the second pipeline 2, and the pipeline connection device is the above-mentioned pipeline connection device. Since the above-mentioned pipeline connection device can solve the problem in the related art that the fastener is exposed to the outside, resulting in poor sealing when the first pipeline and the second pipeline are connected, the gas delivery pipeline having the pipeline connection device can solve the same technical problem.

[0045] In this embodiment, the gas delivery pipeline is a carbon dioxide delivery pipeline. The inventors have found that the existing carbon dioxide delivery pipeline is connected by a flange, and the connection of the flange easily makes the connectivity poor, which seriously affects the sealing between the delivery pipelines, causing carbon dioxide to leak from the connection of the flange, affecting the delivery of carbon dioxide. In addition, the flanges are connected by fasteners 12, and the fasteners 12 include bolts and nuts. The bolts and nuts are exposed to the outdoors for a long time, which can easily cause serious corrosion of the bolts and nuts, affecting the use of the bolts and nuts.

[0046] By applying the technical solution of this embodiment, the first cover body 5 and the second cover body 6 are arranged to protect the first flange 121, the second flange 122 and the fastener 12, reduce the possibility of corrosion of the fastener 12, and thus improve the sealing of the first pipeline 1 and the pipeline.

[0047] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0048] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0049] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipeline connecting device, connected between a first pipeline (1) and a second pipeline (2), characterized in that: The pipeline connecting device comprises: A first flange (121) is arranged at one end of the first pipeline (1); A second flange (122) is arranged at one end of the second pipe (2); A fastener (12) for connecting the first flange (121) and the second flange (122); A first cover body (5) is arranged on the outer side of the first flange (121), and the first cover body (5) is movably arranged along the axial direction of the first pipe (1); A second cover body (6) is arranged on the outer side of the second flange (122); an adjusting ring (4) movably arranged on the first pipe (1) and connected to a side of the first cover body (5) facing away from the second cover body (6), the adjusting ring (4) having an abutting state and a releasing state; When the adjusting ring (4) is in the abutting state, the adjusting ring (4) moves toward the second pipe (2) to push the first cover body (5) and the second cover body (6) to abut and seal; when the adjusting ring (4) is in the releasing state, the adjusting ring (4) moves away from the second pipe (2) to drive the first cover body (5) and the second cover body (6) to separate and fit.

2. The pipeline connecting device according to claim 1, characterized in that: The pipeline connection device also includes a clamping member connected between the first cover body (5) and the second cover body (6), the clamping member including a clamping sleeve (9) and a clamping rod (10) which can be inserted into the clamping sleeve (9) and is clamped with the clamping sleeve (9), the clamping sleeve (9) is arranged on one of the first cover body (5) and the second cover body (6), and the clamping rod (10) is arranged on the other of the first cover body (5) and the second cover body (6).

3. The pipeline connecting device according to claim 2, characterized in that: The clamping rod (10) comprises a rod body, a clamping block (15) which is floatably arranged on the rod body, and an ejection elastic member (16) connected between the rod body and the clamping block (15); the clamping sleeve (9) is provided with a clamping hole (17) which passes through a side wall of the clamping sleeve (9); The clamping block (15) has a clamping position and an avoidance position. When the clamping block (15) is in the clamping position, the clamping block (15) protrudes from the outer wall of the rod body and extends into the clamping hole (17), so that the clamping rod (10) and the clamping sleeve (9) are clamped and matched; when the clamping block (15) is in the avoidance position, the clamping block (15) is disengaged from the clamping hole (17), and the clamping block (15) is abutted and matched with the inner side wall of the clamping sleeve (9), so that the clamping rod (10) can be taken out of the clamping sleeve (9).

4. The pipeline connection device according to claim 3, characterized in that: The pipeline connection device further comprises an unlocking plate (11) which is movably sleeved outside the clamping sleeve (9) along the axial direction of the clamping sleeve (9) and a connecting elastic member (18) connected between the unlocking plate (11) and the clamping sleeve (9), wherein a through hole is provided on the unlocking plate (11), and the clamping sleeve (9) is located in the through hole; A guiding slope is provided on the outer side wall of the clamping block (15), and the guiding slope is gradually inclined outward from a direction close to the unlocking plate (11) to a direction away from the unlocking plate (11). The unlocking plate (11) moves toward the clamping rod (10) so that the side wall of the through hole abuts against the guiding slope, so that the clamping block (15) switches from the clamping position to the avoidance position.

5. The pipeline connection device according to claim 2, characterized in that: The pipe connection device further comprises a first mounting ring (7) arranged on the first cover body (5) and a second mounting ring (8) arranged on the second cover body (6); the clamping sleeve (9) is arranged on one of the first mounting ring (7) and the second mounting ring (8); and the clamping rod (10) is arranged on the other of the first mounting ring (7) and the second mounting ring (8).

6. The pipeline connection device according to claim 1, characterized in that: A first guide groove (3) extending along the axial direction of the first pipe (1) is provided on the outer side wall of the first pipe (1), and a first guide block capable of extending into the first guide groove (3) and cooperating with the first guide groove (3) is provided on the first cover body (5); and / or, A second guide groove extending along the axial direction of the second pipe (2) is provided on the outer side wall of the second pipe (2), and a second guide block capable of extending into the second guide groove and cooperating with the second guide groove is provided on the second cover body (6).

7. The pipeline connection device according to claim 1, characterized in that: The inner wall of the first cover body (5) and part of the outer wall of the first pipe (1) form a first cavity, and the inner wall of the second cover body (6) and part of the outer wall of the second pipe (2) form a second cavity; when the first cover body (5) and the second cover body (6) are in abutment with each other, the first cavity and the second cavity are connected to form a closed cavity, and a sealing layer is provided in the closed cavity, and the sealing layer covers the outer sides of the first flange (121) and the second flange (122).

8. The pipeline connection device according to claim 7, characterized in that: The first cover body (5) and / or the second cover body (6) is provided with a glue injection inlet (13), and the first cover body (5) and / or the second cover body (6) is provided with a glue overflow port (14), and the glue injection inlet (13) and the glue overflow port (14) are arranged at a distance.

9. The pipeline connection device according to claim 1, characterized in that: A plug-in structure is provided between the first cover body (5) and the second cover body (6), the plug-in structure comprising an annular groove and a convex ring which can be inserted into the annular groove, the annular groove being provided on one of the first cover body (5) and the second cover body (6), and the convex ring being provided on the other of the first cover body (5) and the second cover body (6).

10. A gas delivery pipeline, comprising a first pipeline (1), a second pipeline (2) and a pipeline connecting device connected between the first pipeline (1) and the second pipeline (2), characterized in that: The pipeline connecting device is the pipeline connecting device according to any one of claims 1 to 9.

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