Change disk seat ball valve on line
阅读说明:本技术 一种在线更换阀座球阀 (Change disk seat ball valve on line ) 是由 周永竖 于 2019-11-16 设计创作,主要内容包括:本发明公开了一种在线更换阀座球阀,包括有相连通的左阀体与右阀体,右阀体内设有球体,对应的左阀体内设有左阀座,右阀体内设有右阀座,右阀体上端转动穿设有阀杆,阀杆下端与球阀传动相连,阀杆上端连接有扳手,其特征在于:所述右阀体下端可上下移动穿设有定位杆,相应的球体下端设有定位孔,定位杆与定位孔相配合;所述左阀体的通道内还设有左备份阀座,左阀座可以直接从左阀体内抽离,并由左备份阀座替换左阀座。本发明实现左阀座损坏时,可不需要停止运行管道,不需要拆卸球阀,就能把损坏的左阀座取出,把左备份阀座移动至原来左阀座的位置,从而具有在线更换左阀座的优点。(The invention discloses a ball valve with an online replacement valve seat, which comprises a left valve body and a right valve body which are communicated, wherein a ball body is arranged in the right valve body, a left valve seat is arranged in the corresponding left valve body, a right valve seat is arranged in the right valve body, a valve rod is rotatably arranged at the upper end of the right valve body in a penetrating manner, the lower end of the valve rod is connected with the ball valve in a transmission manner, and the upper end of the valve rod is connected with a: the lower end of the right valve body can move up and down to penetrate through a positioning rod, the lower end of the corresponding ball body is provided with a positioning hole, and the positioning rod is matched with the positioning hole; and a left backup valve seat is also arranged in the channel of the left valve body, the left valve seat can be directly drawn out from the left valve body, and the left backup valve seat replaces the left valve seat. When the left valve seat is damaged, the damaged left valve seat can be taken out without stopping running the pipeline or disassembling the ball valve, and the left backup valve seat is moved to the position of the original left valve seat, so that the invention has the advantage of replacing the left valve seat on line.)
1. The utility model provides an online change disk seat ball valve, is equipped with the spheroid in the right valve body including the left valve body and the right valve body that are linked together, is equipped with left disk seat in the left valve body that corresponds, is equipped with right disk seat in the right valve body, and the valve rod is worn to be equipped with in the rotation of right valve body upper end, and the valve rod lower extreme links to each other with the ball valve transmission, and the valve rod upper end is connected with spanner, its: the lower end of the right valve body can move up and down to penetrate through a positioning rod, the lower end of the corresponding ball body is provided with a positioning hole, and the positioning rod is matched with the positioning hole; an inner bushing is arranged in a channel of the left valve body, the left end of the inner bushing is fixed in the left valve body through an outer positioning ring, an inner pull sleeve, an outer pull sleeve, a pull gear sleeve, a push gear sleeve and a top sleeve are arranged between the inner bushing and the inner wall of the left valve body, a left backup valve seat is arranged on the left side of the left valve seat, butted spiral grooves are formed in the inner peripheries of the left valve seat and the left backup valve seat, a drag hook is arranged at the right end of the inner pull sleeve and extends into the spiral grooves, a push plate is arranged at the right end of the outer pull sleeve and is butted on the left side of the left backup valve seat, the left ends of the inner pull sleeve and the outer pull sleeve are respectively in threaded transmission connection with the pull gear sleeve to move left and right, the pitch of connecting threads between the inner pull sleeve and the pull gear sleeve is larger than that between the outer pull sleeve and the pull gear sleeve, the pull gear sleeve is connected with a first rotary driving structure, the, the pull gear sleeve is limited on the right side of the inner positioning ring, the outer periphery of the push gear sleeve is in threaded connection with the inner periphery of the push gear sleeve, the push gear sleeve is connected with a second rotary driving structure, the push gear sleeve drives the push sleeve to move left and right, the right end of the push sleeve is abutted against the pull gear sleeve, and the push sleeve is provided with an anti-rotation structure; the lower end of the left valve body is further provided with a pull box penetrating through a channel of the left valve body, the lower end of the pull box is provided with a sealing plate, a pull rod moving up and down penetrates through the sealing plate, a T-shaped head is arranged at the upper end of the pull rod, T-shaped grooves are formed in the lower ends of the corresponding left valve seat and the left backup valve seat, and the T-shaped heads are arranged on a moving path of the T-shaped grooves in a matched mode.
2. The on-line replacement seat ball valve of claim 1, wherein: the first rotary driving structure comprises a first worm and a first hand wheel, the first worm is rotatably arranged on the left valve body in a penetrating mode, the outer end of the first worm is connected with the first hand wheel, and the inner end of the first worm is meshed with the periphery of the gear sleeve.
3. The on-line replacement seat ball valve of claim 1, wherein: the second rotary driving structure comprises a second worm and a second hand wheel, the second worm is rotatably arranged on the left valve body in a penetrating mode, the outer end of the second worm is connected with the first hand wheel, and the inner end of the second worm is meshed with the periphery of the gear pushing sleeve.
4. The on-line replacement seat ball valve of claim 1, wherein: the anti-rotation structure comprises a positioning pin, the right end of the positioning pin penetrates through the top sleeve, and the left end of the positioning pin is fixed on the outer positioning ring.
5. The on-line replacement seat ball valve of claim 1, wherein: and a packing is arranged between the valve rod and the right valve body, a gland is arranged at the upper end of the packing and is fixed on the right valve body.
6. The on-line replacement seat ball valve of claim 1, wherein: the locating lever is the type of falling T, and locating lever upper portion links to each other with right valve body screw thread.
7. The on-line replacement seat ball valve of claim 1, wherein: the draw hook is provided with an upper hook head and a lower hook head which are symmetrical up and down, and the upper hook head and the lower hook head respectively extend into the spiral groove.
Technical Field
The invention relates to an improved ball valve, in particular to an improved ball valve with an online replacement valve seat.
Background
The ball valve is the valve of a wide application in petroleum pipeline, natural gas line and chemical industry system, traditional type ball valve that floats is when using, and the spheroid compresses tightly the outlet side disk seat under the promotion of medium and seals, because the disk seat material is made for fluoroplastics or nylon materials, therefore the easy wearing and tearing of outlet side disk seat, when the wearing and tearing of outlet side disk seat, can't carry out online change, need the shut down pipeline, dismantle the valve and maintain, change the disk seat, cause the bulk loss of manpower, material resources.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides the ball valve with the valve seat replaced on line, which has a skillful structure and saves time and labor.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme: this kind of change disk seat ball valve on line, including the left valve body and the right valve body that are linked together, be equipped with the spheroid in the right valve body, be equipped with left disk seat in the left valve body that corresponds, be equipped with right disk seat in the right valve body, the valve rod is worn to be equipped with in the rotation of right valve body upper end, and the valve rod lower extreme links to each other with the ball valve transmission, and the valve rod upper end is connected with spanner, its characterized: the lower end of the right valve body can move up and down to penetrate through a positioning rod, the lower end of the corresponding ball body is provided with a positioning hole, and the positioning rod is matched with the positioning hole; an inner bushing is arranged in a channel of the left valve body, the left end of the inner bushing is fixed in the left valve body through an outer positioning ring, an inner pull sleeve, an outer pull sleeve, a pull gear sleeve, a push gear sleeve and a top sleeve are arranged between the inner bushing and the inner wall of the left valve body, a left backup valve seat is arranged on the left side of the left valve seat, butted spiral grooves are formed in the inner peripheries of the left valve seat and the left backup valve seat, a drag hook is arranged at the right end of the inner pull sleeve and extends into the spiral grooves, a push plate is arranged at the right end of the outer pull sleeve and is butted on the left side of the left backup valve seat, the left ends of the inner pull sleeve and the outer pull sleeve are respectively in threaded transmission connection with the pull gear sleeve to move left and right, the pitch of connecting threads between the inner pull sleeve and the pull gear sleeve is larger than that between the outer pull sleeve and the pull gear sleeve, the pull gear sleeve is connected with a first rotary driving structure, the, the pull gear sleeve is limited on the right side of the inner positioning ring, the outer periphery of the push gear sleeve is in threaded connection with the inner periphery of the push gear sleeve, the push gear sleeve is connected with a second rotary driving structure, the push gear sleeve drives the push sleeve to move left and right, the right end of the push sleeve is abutted against the pull gear sleeve, and the push sleeve is provided with an anti-rotation structure; the lower end of the left valve body is further provided with a pull box penetrating through a channel of the left valve body, the lower end of the pull box is provided with a sealing plate, a pull rod moving up and down penetrates through the sealing plate, a T-shaped head is arranged at the upper end of the pull rod, T-shaped grooves are formed in the lower ends of the corresponding left valve seat and the left backup valve seat, and the T-shaped heads are arranged on a moving path of the T-shaped grooves in a matched mode.
The first rotary driving structure comprises a first worm and a first hand wheel, the first worm is rotatably arranged on the left valve body in a penetrating mode, the outer end of the first worm is connected with the first hand wheel, and the inner end of the first worm is meshed with the periphery of the gear sleeve.
The second rotary driving structure comprises a second worm and a second hand wheel, the second worm is rotatably arranged on the left valve body in a penetrating mode, the outer end of the second worm is connected with the first hand wheel, and the inner end of the second worm is meshed with the periphery of the gear pushing sleeve.
The anti-rotation structure comprises a positioning pin, the right end of the positioning pin penetrates through the top sleeve, and the left end of the positioning pin is fixed on the outer positioning ring.
And a packing is arranged between the valve rod and the right valve body, a gland is arranged at the upper end of the packing and is fixed on the right valve body.
The locating lever is the type of falling T, and locating lever upper portion links to each other with right valve body screw thread.
The draw hook is provided with an upper hook head and a lower hook head which are symmetrical up and down, and the upper hook head and the lower hook head respectively extend into the spiral groove.
The improved ball valve with the valve seat replaced on line has the advantages that when the valve is used, if the left valve seat is damaged, the left valve seat can be taken out without stopping running a pipeline or disassembling the ball valve, and the left backup valve seat is moved to the position of the original left valve seat, so that the left valve seat can be replaced on line.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view a-a of fig. 1 of the present invention.
Fig. 3 is a cross-sectional view E-E of fig. 1 according to the present invention.
Fig. 4 is a cross-sectional view D-D of fig. 1 of the present invention.
FIG. 5 is a sectional view of the left valve seat and left backup valve seat assembly of the present invention.
FIG. 6 is an enlarged view of the portion of FIG. 5 taken along line C.
Fig. 7 is a schematic structural view of the retractor of the present invention.
Detailed Description
The drawings show the structure of the invention, and the details thereof are further described below with reference to the drawings. The online valve seat replacing ball valve comprises a
The first rotary driving structure comprises a
The second rotary driving structure comprises a
The
And a
The
According to the working principle of the invention, when the
After the
In summary, 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 should be included in the protection scope of the present invention.
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