CN212107010U - Automatic compensation ball valve for pipeline system - Google Patents
Automatic compensation ball valve for pipeline system Download PDFInfo
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- CN212107010U CN212107010U CN202020739695.6U CN202020739695U CN212107010U CN 212107010 U CN212107010 U CN 212107010U CN 202020739695 U CN202020739695 U CN 202020739695U CN 212107010 U CN212107010 U CN 212107010U
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- valve
- ball
- pipeline
- valve body
- tubular structure
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Abstract
The utility model discloses an automatic compensation ball valve of a pipeline system, which comprises a valve body connected with a gear box, a valve core ball for opening and closing a pipeline, an upper valve rod respectively connected with the gear box and the valve core ball and used for driving the valve core ball to rotate, and a multi-level valve seat sealing structure with one hard seal and two soft seals; the end face of at least one end of the valve body is connected with a reducing tubular structure which extends to the far end along the fluid flowing direction and is provided with a protrusion and/or a depression, and the reducing tubular structure is used for achieving the supplement function of eliminating the thermal stress of the pipeline. The ball valve is simple and compact in structure, the valve and the pipeline compensator are designed in an integrated structure, leakage points are reduced as much as possible, sealing is guaranteed to be more reliable, the service life is longer, and the running cost of the whole pipeline is reduced. The sealing device has an integrated structure, is small in size and light in weight, ensures reliable sealing in an all-welded mode, does not need maintenance, and is long in service life and convenient to operate.
Description
Technical Field
The utility model relates to a ball valve technical field especially relates to a valve adopts integral type structural design's pipe-line system automatic compensation ball valve with pipeline compensator.
Background
Thermal expansion and contraction of the pipe due to temperature changes can occur, if the pipe cannot expand or contract completely freely during temperature changes, thermal stress is generated in the pipe, and the stress must be considered in pipe and valve design, otherwise, the stress can cause the breakage of the pipe and influence the normal production.
The pipe compensator is also called as a telescopic device or a telescopic joint or an expansion joint and is mainly used for compensating expansion and contraction caused by temperature change of a pipe. Thermal stresses will develop in the pipe if the pipe is not fully free to expand or contract when the temperature changes. This stress must be taken into account in the pipe design, otherwise it may lead to cracking of the pipe, affecting the normal production run. As an important component of pipeline engineering, the compensator plays an important role in ensuring long-term normal operation of the pipeline.
In the prior art, in order to eliminate the influence of the thermal stress generated by the pipeline on the pipeline, a pipeline compensator is usually installed on the pipeline to be used together with a valve. However, this method has the disadvantages of complex structure, bulkiness and heaviness; the valve is connected with the pipeline compensator for combined use, so that a plurality of leakage parts are provided, and the medium is easy to leak; the use of both valves and compensators can increase the overall pipeline operating costs.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pipe-line system automatic compensation ball valve.
The utility model provides a following scheme:
an automatic compensation ball valve of a pipeline system comprises a valve body connected with a gear box, a valve core ball for opening and closing a pipeline, an upper valve rod which is respectively connected with the gear box and the valve core ball and is used for driving the valve core ball to rotate, and a multi-layer valve seat sealing structure with one hard seal and two soft seals;
the end face of at least one end of the valve body is connected with a reducing tubular structure which extends to the far end along the fluid flowing direction and is provided with a protrusion and/or a depression, and the reducing tubular structure is used for achieving the supplement function of eliminating the thermal stress of the pipeline.
Preferably: the end face of one end of the valve body is connected with a first reducing tubular structure with a bulge; the end face of the other end of the valve body is connected with a second reducing tubular structure with a protrusion, and the first reducing tubular structure and the second reducing tubular structure are fixedly connected with the valve body through a welding process.
Preferably: hard sealed bellows seal assembly who links to each other including with the metal valve seat circle, soft sealed including being located on the metal valve seat circle and with V type sealing washer and the N type sealing washer of case ball looks butt.
Preferably: and a pre-tightening spring is arranged between the metal valve seat ring and the reducing tubular structure.
Preferably: the gear box is connected with the valve body through an upper shaft sleeve and a stuffing box, and the upper shaft sleeve is fixedly connected with the valve body in a welding mode.
Preferably: the upper valve rod sequentially penetrates through the stuffing box and the upper shaft sleeve to be connected with the valve core ball; a self-lubricating oilless bearing is arranged between the upper valve rod and the upper shaft sleeve; the upper valve rod is provided with a T-shaped shoulder, the upper surface of the T-shaped shoulder is provided with a thrust gasket, and the lower end face of the stuffing box is abutted against the upper surface of the thrust gasket.
Preferably: the packing box with be provided with multichannel O type sealing washer and fire prevention filler sealing layer between the last valve rod, the packing box with be connected with multichannel O type sealing washer and winding gasket together between the last axle sleeve.
Preferably: the lower valve rod is fixedly connected with the valve core ball and rotatably connected with the lower shaft sleeve.
Preferably: the lower valve rod is connected with the lower shaft sleeve through a self-lubricating oilless bearing; the lower shaft sleeve is fixedly connected with the valve body by adopting a welding process, and the lower part of the lower shaft sleeve is connected with a bottom cover which is used for sealing.
Preferably: a plurality of lifting lugs and supporting foot frames are formed on the valve body.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
through the utility model, a pipeline system automatic compensation ball valve can be realized, and in an implementation mode, the ball valve can comprise a valve body connected with a gear box, a valve core ball used for opening and closing a pipeline, an upper valve rod respectively connected with the gear box and the valve core ball and used for driving the valve core ball to rotate, and a multi-level valve seat sealing structure with one hard seal and two soft seals; the end face of at least one end of the valve body is connected with a reducing tubular structure which extends to the far end along the fluid flowing direction and is provided with a protrusion and/or a depression, and the reducing tubular structure is used for achieving the supplement function of eliminating the thermal stress of the pipeline. The ball valve is simple and compact in structure, the valve and the pipeline compensator are designed in an integrated structure, leakage points are reduced as much as possible, sealing is guaranteed to be more reliable, the service life is longer, and the running cost of the whole pipeline is reduced. The sealing device has an integrated structure, is small in size and light in weight, ensures reliable sealing in an all-welded mode, does not need maintenance, and is long in service life and convenient to operate.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an automatic compensation ball valve of a pipeline system according to an embodiment of the present invention;
fig. 2 is an enlarged schematic view of a part (a) provided in an embodiment of the present invention;
fig. 3 is an enlarged schematic view of a part (B) provided in an embodiment of the present invention.
In the figure: the self-lubricating oil-free bearing comprises a gear box 1, a valve body 2, a valve core ball 3, an upper valve rod 4, a first reducing tubular structure 5, a second reducing tubular structure 6, a metal valve seat ring 7, a bellows seal assembly 8, a V-shaped seal ring 9, an N-shaped seal 10, a pre-tightening spring 11, an upper shaft sleeve 12, a stuffing box 13, a self-lubricating oil-free bearing 14, a thrust gasket 15, an O-shaped seal ring 16, a fireproof stuffing seal layer 17, a winding gasket 18, a lower valve rod 19, a lower shaft sleeve 20, a bottom cover 21, a lifting lug 22 and a support foot rest 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
Examples
Referring to fig. 1, 2, and 3, for a pipeline system automatic compensation ball valve provided by an embodiment of the present invention, as shown in fig. 1, 2, and 3, the ball valve includes a valve body 2 connected to a gear box 1, a valve core ball 3 for opening and closing a pipeline, an upper valve rod 4 connected to the gear box 1 and the valve core ball 3 respectively for driving the valve core ball 3 to rotate, and a multi-layer valve seat sealing structure having one hard seal and two soft seals;
the end face of at least one end of the valve body 2 is connected with a reducing tubular structure which extends towards the far end along the fluid flowing direction and is provided with a protrusion and/or a depression, and the reducing tubular structure is used for achieving the supplement function of eliminating the thermal stress of the pipeline.
The application provides a ball valve, under the unchangeable prerequisite of the ball valve functionality of keeping former, all form the reducing tubular structure who is used for realizing the supplementary function of eliminating pipeline thermal stress at its one end or both ends, this reducing tubular structure's function is similar with traditional pipeline compensator's function, and the expend with heat and contract with cold that can effectual compensation pipeline received the temperature variation and produced. When the ball valve is used, the valve body and the compensator form an integrated structure, and the butterfly valve provided by the application is directly connected with a pipeline without installing an additional pipeline compensator.
In practical application, a reducing tubular structure can be arranged at one end or two ends of the valve body 2 according to the requirements of field installation positions. In order to balance the two ends after connection and achieve the function of compensating pipelines at the two ends, the end face of one end of the valve body 2 is connected with a first reducing tubular structure 5 with a bulge; the end face of the other end of the valve body 2 is connected with a second reducing tubular structure 6 with a bulge, and the first reducing tubular structure 5 and the second reducing tubular structure 6 are fixedly connected with the valve body 2 through a welding process. The valve body and the reducing tubular structure are in an all-welded integrated structure, the valve body and the reducing tubular structure are connected through welding to form a butterfly valve with a compensation function, and the butterfly valve is compact in structure, light in weight and good in strength. In practical application, a variable diameter tubular structure with a corrugated structure formed by combining a plurality of continuous protrusions and depressions can be adopted.
In order to further improve the sealing performance of the ball valve, the hard seal comprises a bellows seal assembly 8 connected with a metal valve seat ring 7, and the soft seal comprises a V-shaped seal ring 9 and an N-shaped seal ring 10 which are positioned on the metal valve seat ring 7 and abut against the valve core ball 3. The unique valve seat design (one hard seal and two soft seals and a multilayer structure are in a sealing structure form), and the back of the valve seat adopts a special corrugated pipe sealing structure form, so that the valve and the pipeline are safer and more reliable. The static seal of the valve seat adopts a special corrugated pipe sealing structure, so that the automatic compensation valve can play a role of automatic sealing when the automatic compensation valve is subjected to thermal expansion and cold contraction deformation of a pipeline. Meanwhile, the bellows sealing structure is adopted to replace the original O-shaped sealing ring, so that the service life of the sealing structure can be effectively prolonged, the service life of the sealing ring is consistent with the service life of the whole ball valve, and the maintenance work in the use process is reduced. In order to further eliminate the thermal stress, a pre-tightening spring 11 is arranged between the metal valve seat ring 7 and the reducing tubular structure.
In order to enable the ball valve to have good fireproof performance, the gear box 1 is connected with the valve body 2 through an upper shaft sleeve 12 and a stuffing box 13, and the upper shaft sleeve 12 is fixedly connected with the valve body 2 in a welding mode. The upper valve rod 4 sequentially penetrates through the stuffing box 13 and the upper shaft sleeve 12 to be connected with the valve core ball 3; a self-lubricating oilless bearing 14 is arranged between the upper valve rod 4 and the upper shaft sleeve 12; the upper valve rod 4 is provided with a T-shaped shoulder, the upper surface of the T-shaped shoulder is provided with a thrust gasket 15, and the lower end face of the stuffing box 13 is abutted against the upper surface of the thrust gasket 15. A plurality of O-shaped sealing rings 16 and a fireproof packing sealing layer 17 are arranged between the packing box 13 and the upper valve rod 4, and a plurality of O-shaped sealing rings 16 and a winding gasket 18 are connected between the packing box 13 and the upper shaft sleeve 12. The ball body and the valve seat are sealed by adopting a hard seal and two soft seals and a multi-layer structure, so that the sealing reliability is ensured. The upper valve rod adopts an upper mounting type, and the function of preventing the valve rod from flying out can be realized by pressing the T-shaped shoulder of the valve rod by using the stuffing box, so that the function grade of the automatic compensation valve is higher.
Further, the valve core comprises a lower valve rod 19, wherein the lower valve rod 19 is fixedly connected with the valve core ball 3 and is rotatably connected with a lower shaft sleeve 20. The lower valve rod 19 is connected with the lower shaft sleeve 20 through a self-lubricating oilless bearing 14; the lower shaft sleeve 20 is fixedly connected with the valve body 2 by adopting a welding process, and the lower part of the lower shaft sleeve 20 is connected with a bottom cover 21 which is used for sealing. The valve body 2 is formed with a plurality of lifting lugs 22 and a support leg 23. The lower valve rod and the valve core ball adopt a self-lubricating oilless bearing for lubricating transmission, so that the opening and closing torque of the high-performance ball valve is very small.
The application provides a pipe-line system automatic compensation ball valve can use on the pipeline in the aspect of fields such as heat supply, heating system, plays automatic compensation's function when the pipeline is because of expend with heat and contract with cold deformation, prevents breaking of pipeline. Therefore, the safety and the reliability of the valve and the pipeline are ensured, and the compensator plays an important role in ensuring the long-term normal operation of the pipeline as an important component of pipeline engineering.
The valve body is made of high-performance high-quality carbon steel; the valve body adopts a spherical integrated structure design, so that leakage points are reduced as much as possible, the medium is prevented from leaking outwards, and more reliable sealing is ensured; spherical structural style, all-welded integral type structure, valve body and compensator pass through welded connection, compact structure, and the quality is light, intensity is good. The ball body and the valve seat are sealed by adopting a hard seal and two soft seals and a multi-layer structure, so that the sealing reliability is ensured.
In a word, the pipeline system automatic compensation ball valve that this application provided adopts spherical head in the changeover portion, makes the whole automatic compensation pipeline of valve all have because of expend with heat and contract with cold the deformation that causes to guarantee safer, more reliable of valve, pipeline. The ball valve is simple and compact in structure, the valve and the pipeline compensator are designed in an integrated structure, leakage points are reduced as much as possible, sealing is guaranteed to be more reliable, the service life is longer, and the running cost of the whole pipeline is reduced. The sealing device has an integrated structure, is small in size and light in weight, ensures reliable sealing in an all-welded mode, does not need maintenance, and is long in service life and convenient to operate.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. An automatic compensation ball valve for a pipeline system is characterized by comprising a valve body connected with a gear box, a valve core ball for opening and closing a pipeline, an upper valve rod which is respectively connected with the gear box and the valve core ball and is used for driving the valve core ball to rotate, and a multi-layer valve seat sealing structure with one hard seal and two soft seals;
the end face of at least one end of the valve body is connected with a reducing tubular structure which extends to the far end along the fluid flowing direction and is provided with a protrusion and/or a depression, and the reducing tubular structure is used for achieving the supplement function of eliminating the thermal stress of the pipeline.
2. The automatic compensating ball valve for the pipeline system according to claim 1, wherein a first reducing tubular structure with a protrusion is connected to an end surface of one end of the valve body; the end face of the other end of the valve body is connected with a second reducing tubular structure with a protrusion, and the first reducing tubular structure and the second reducing tubular structure are fixedly connected with the valve body through a welding process.
3. The ducted automatic compensating ball valve of claim 1, wherein the hard seal comprises a bellows seal assembly coupled to a metal valve seat ring, and the soft seal comprises a V-seal and an N-seal on the metal valve seat ring abutting the valve core ball.
4. The ducted automatic compensating ball valve of claim 3, wherein a pre-tightening spring is provided between the metal valve seat ring and the reducing tubular structure.
5. The automatic compensating ball valve for pipeline system as claimed in claim 1, wherein the gear box is connected to the valve body through an upper bushing and a stuffing box, and the upper bushing is fixedly connected to the valve body by welding.
6. The ducted automatic compensating ball valve of claim 5, wherein said upper valve stem is connected to said cartridge ball sequentially through said stuffing box and said upper bushing; a self-lubricating oilless bearing is arranged between the upper valve rod and the upper shaft sleeve; the upper valve rod is provided with a T-shaped shoulder, the upper surface of the T-shaped shoulder is provided with a thrust gasket, and the lower end face of the stuffing box is abutted against the upper surface of the thrust gasket.
7. The automatic compensating ball valve for pipeline system of claim 5, wherein a plurality of O-shaped sealing rings and a fireproof packing sealing layer are arranged between the stuffing box and the upper valve rod, and a plurality of O-shaped sealing rings and a winding gasket are connected between the stuffing box and the upper shaft sleeve.
8. The ducted automatic compensating ball valve of claim 1, further comprising a lower stem fixedly connected to the cartridge ball and rotatably connected to the lower bushing.
9. The ducted automatic compensating ball valve according to claim 8, wherein the lower valve stem is connected to the lower bushing through a self-lubricating oilless bearing; the lower shaft sleeve is fixedly connected with the valve body by adopting a welding process, and the lower part of the lower shaft sleeve is connected with a bottom cover which is used for sealing.
10. The automatic compensating ball valve for piping system according to claim 1, wherein said valve body is formed with a plurality of lifting lugs and supporting legs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020739695.6U CN212107010U (en) | 2020-05-08 | 2020-05-08 | Automatic compensation ball valve for pipeline system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020739695.6U CN212107010U (en) | 2020-05-08 | 2020-05-08 | Automatic compensation ball valve for pipeline system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212107010U true CN212107010U (en) | 2020-12-08 |
Family
ID=73617100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020739695.6U Expired - Fee Related CN212107010U (en) | 2020-05-08 | 2020-05-08 | Automatic compensation ball valve for pipeline system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212107010U (en) |
-
2020
- 2020-05-08 CN CN202020739695.6U patent/CN212107010U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201208 Termination date: 20210508 |
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| CF01 | Termination of patent right due to non-payment of annual fee |