CN1299021A - Environment protection type low-torque high-temp. high-pressure cut-off valve - Google Patents
Environment protection type low-torque high-temp. high-pressure cut-off valve Download PDFInfo
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- CN1299021A CN1299021A CN 99125404 CN99125404A CN1299021A CN 1299021 A CN1299021 A CN 1299021A CN 99125404 CN99125404 CN 99125404 CN 99125404 A CN99125404 A CN 99125404A CN 1299021 A CN1299021 A CN 1299021A
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- high temperature
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Abstract
An envivonmental protection low torque cut-off valve for, high pressure and high temperature pipeline is constituted by valve body, valve clack, valve rod, one-direction thrust ball, valve cover, packing packing gasket, packing gland, hand wheel, interlocking bolt nut, rediating fin and leakage guiding hole. The feature of it is the valve rode including one thick part and one thin part, the thick part together with packing and other members constitutes one dynamic sealing mechanism, and the thin part together with elevating rod, valve cover, handwheel, inter locking bolt nut, pin and other members constitutes one driving mechanism. The sealing between valve body and the pipes is realized through butt welding and other effective sealing, a set of rediating fins are manufactured on the outer side of packing in the valve body and a leakage quiding hole is drilled on the valve body above the packing.
Description
The present invention relates to the start-stop device in a kind of High Temperature High Pressure pipe-line system.
At present, high temperature and high pressure cut-off valve of the same type is to be combined by component such as valve body, valve gap, support, valve rod, flap, fillers.The structure of patented technology (96212278.5) the high temperature high voltage resistant stop valve of in " valve " magazine third phase in 1997 " progress of the small-bore stop valve of High Temperature High Pressure and application " literary composition, being introduced recently; because high temperature and high pressure cut-off valve is to preventing in the valve; the seal request of external leakage is high especially; so said structure prevents from also to exist aspect the external leakage some problems at the motive sealing position that reduces moment of torsion and filler protection and filler and valve rod: 1; the round bar that is used for motive sealing on the valve rod partly is total axial force when bearing valve switch and the seal friction power between the filler; lifting power when helical thread portion also transmits valve switch when bearing the power that round bar part born is so the diameter of screw thread should be greater than the diameter of round bar on the valve rod.Because the helical thread portion and the round bar of the whole valve rod of prior art are partly processed on the same axis, Gland must enter stuffing box and compress filler after helical thread portion is inserted in the round bar part, so the diameter of round bar must be more than or equal to the diameter of thread on the valve rod, so just increased the motive sealing area of filler and valve rod, increased required impacting force and the frictional force of filler, the operation moment of torsion increases thereupon, makes motive sealing place of valve be easy to generate external leakage, causes the pollution of medium to surrounding environment; 2, there is not cooling measure to prolong the life cycle of filler in the outside of stuffing box.
It is not enough and provide a kind of valve rod to valve to decompose and make up to the objective of the invention is to overcome prior art, make the round bar part of valve rod not restricted by helical thread portion, reach the motive sealing area that reduces effectively between valve rod and the filler, reduce frictional force, and take cooling measure with anti-aging to filler, make the high temperature and high pressure cut-off valve rapid operation, long service life, the present invention also is more satisfactory structural type selecting suitable material and related process to use in medium pipeline systems such as low temperature, strong corruption and radioactivity.
The object of the present invention is achieved like this.By valve body, flap, valve rod, Packing seat, filler, Gland, lifting bar, single direction thrust ball bearing, valve gap, Cock screw, end tight double-screw bolt, mutual jack panel, packing ring, the environment protection type low-torque high temperature and high pressure cut-off valve that locating stud is formed, the mesopore of valve body is separately installed with Packing seat, filler, Gland, the thick bar of valve gap and valve rod is partly formed dynamic seal apparatus, the thin rod part branch of valve rod passes on the double-screw bolt behind the mesopore of single direction thrust ball bearing and lifting bar packing ring is installed, mutual jack panel, locating stud, the outside thread of lifting bar and the internal thread of valve gap screw, handle is installed on the lifting bar, and constitute a drive unit with Cock screw is fixing, locking nut is to be used for fixing the position of valve gap after compressing filler, and the outside of stuffing box is processed with radiating fin on the valve body.
In sum, advantage of the present invention is: the environment protection type low-torque high temperature and high pressure cut-off valve has that volume is little, leakage point is few, perfect heat-dissipating, and friction area reduces between valve rod and the filler, and operation torsion is little, long service life.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Fig. 1 is the sectional drawing of environment protection type low-torque high temperature and high pressure cut-off valve of the present invention in off position the time.
The structure of environment protection type low-torque high temperature and high pressure cut-off valve of the present invention as shown in Figure 1, the outside thread of valve body (1) mesopore internal thread and valve gap (9) screws, packing seal is to compress the following filler (7) of Gland (8) by rotation valve gap (9), and the thick bar part (17) on the valve rod (3) cooperates formation one dynamic seal apparatus with the mesopore of filler (7), Packing seat (6), Gland (8).The lower end of valve rod (3) is equipped with flap (2).Handle (12) is installed on the lifting bar (10), and it is fixing with Cock screw (13), the outside thread of lifting bar (10) and valve gap (9) internal thread screw, the thin rod part branch (19) of valve rod (3) is through at the mesopore of single direction thrust ball bearing (18) and lifting bar (10), packing ring (14) outside stretching out the hole, it is installed on double-screw bolt, interlocking nut (15), locating stud (16), the following contact stress surface of lifting bar (10) when promoting the descending throttle down of valve rod (3) is to be placed in the upper-end surface that thin rod part branch (19) is gone up one direction thrust bearing (18), go up the contact stress surface during the up Open valve of pulling valve rod (3) and be and be installed on valve rod (3) and go up packing ring (14) lower plane, thick bar part (17) diameter dimension of such its valve rod of the drive unit that constitutes (3) and the restriction that lifting bar (10) diameter of thread size is not subjected to mutually on the double-screw bolt of thin rod part branch (19) upper end.The length dimension of lifting bar (10) less than between the two surface of contact stress surfaces apart from size, and has a gap, promptly when throttle down, between the upper-end surface of lifting bar (10) and the packing ring (14) gap is arranged, when Open valve, between the upper-end surface of the lower end of lifting bar (10) and single direction thrust ball bearing (18) gap is arranged, the big external force that moment produced of lifting bar (10) when unlatching or throttle down does not influence the thin rod part branch (19) of valve rod (3) like this.Lifting bar (10) mesopore is placed on the thin bar (19) of valve rod (3), and its two end surface makes upper and lower contact plane of constraint bear spin friction pulling force and spin friction pressure, and the linearly elevating movement of motion state when making the work of valve rod (3) and flap (2).Valve body (1) is gone up the stuffing box outside that filler (7) is installed and is processed with radiating fin (4), between stuffing box on the valve body (1) and mesopore internal thread, be drilled with and lead small opening (5), locking nut (11) is to be used for fixing the position of valve gap (9) after compressing filler (7), interlocking nut (15) is that the nut by two same sizes makes the nut mutual extrusion with opposite rotating force respectively, reaches on the double-screw bolt that is locked at valve rod (3) thin rod part branch (19) end.
Environment protection type low-torque high temperature and high pressure cut-off valve of the present invention can be selected for use respectively welding type according to the difference of pipeline medium temperature, pressure and other parameter and the Placement of pipeline, banjo clip lens sealed type, the taper pipe thread sealed type, internal and external threads sealed types etc. are seal form effectively, selecting for use also of major part material selected for use carbon steel according to medium parameter, refractory steel, stainless steel, alloyed steel etc.The structural type of moving towards valve according to pipeline can be divided into straight-through type, right-angle type or direct current type and multi-way.Selecting high temperature resistant, low temperature resistant, the anti-rotten and anti-width of cloth suitable material such as to penetrate according to medium parameter filler (7) installs.
The present invention is not limited to above-mentioned mode of execution; no matter on shape or structure and driving mode, do any variation; be processed with on every valve rod (3) and cooperate thick bar part (17) that is used for motive sealing and the thin rod part branch (19) that cooperates with lifting bar (10) with filler (7); lifting bar (10) and single direction thrust ball bearing (18) are placed on the thin rod part branch (19) of valve rod (3); and on the double-screw bolt that stretches out with packing ring (14), interlocking nut (15) pin modes such as (16) positions to lifting bar (10) that to reduce motive sealing area between valve rod (3) and the filler (7) be that the stop valve of purpose all drops within protection scope of the present invention to reach.
Claims (6)
1, a kind of environment protection type low-torque high temperature and high pressure cut-off valve, it comprises by valve body, flap, valve rod, valve gap, handle, filler, Gland is formed, its feature in: be processed with thick bar part (17) and thin rod part branch (19) on the valve rod (3), cooperate with Packing seat (6) filler (7) Gland (8) in thick bar part (17) stuffing box on valve body (1), thin rod part branch (19), pass on the double-screw bolt of its extension behind the mesopore of single direction thrust ball bearing (18) and lifting bar (10) packing ring (14) interlocking nut (15) locating stud (16) is installed, internal thread on outside thread on the lifting bar (10) and the valve gap (9) screws, and the internal thread that outside thread on the valve gap (9) and valve body (1) are gone up mesopore screws.
2, the low torque high temperature and high pressure cut-off valve of environment protection type according to claim 1 is characterized in that: the length dimension of lifting bar (10) less than between the two end in contact stress surfaces apart from size, and have a gap.
3, environment protection type low-torque high temperature and high pressure cut-off valve according to claim 1 is characterized in that: the outside that valve body (1) is gone up filler (7) position is processed with radiating fin (4).
4, environment protection type low-torque high temperature and high pressure cut-off valve according to claim 1 is characterized in that the helical thread portion diameter of thick bar part (17) diameter of valve rod (3) less than lifting bar (10).
5, environment protection type low-torque high temperature and high pressure cut-off valve according to claim 1 is characterized in that interlocking nut (15) is made up of two identical nuts of specification.
6, environment protection type low-torque high temperature and high pressure cut-off valve according to claim 1 is characterized in that single direction thrust ball bearing (18) is heavy non-standard component, and the steel ball center diameter of a circle of its circumferential arrangement is gone up the diameter of thick bar part (17) less than valve rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99125404 CN1299021A (en) | 1999-12-06 | 1999-12-06 | Environment protection type low-torque high-temp. high-pressure cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99125404 CN1299021A (en) | 1999-12-06 | 1999-12-06 | Environment protection type low-torque high-temp. high-pressure cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1299021A true CN1299021A (en) | 2001-06-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99125404 Pending CN1299021A (en) | 1999-12-06 | 1999-12-06 | Environment protection type low-torque high-temp. high-pressure cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1299021A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101354094B (en) * | 2007-07-27 | 2011-08-10 | 张跃 | Small electric valve for shock-absorbing protecting torsion force |
| CN102734473A (en) * | 2011-03-29 | 2012-10-17 | 抚顺市博瑞特科技有限公司 | Rotational-free self-sealing valve |
| WO2016058152A1 (en) * | 2014-10-16 | 2016-04-21 | 余金海 | Gate valve and manufacturing process thereof |
| CN110238430A (en) * | 2019-04-02 | 2019-09-17 | 马鞍山市嘉逸科技工贸有限责任公司 | A kind of high pressure gauge boring device |
| CN110725996A (en) * | 2019-10-18 | 2020-01-24 | 刘月金 | Small-torque high-pressure valve capable of reducing impact force and improving comprehensive performance |
| CN111237486A (en) * | 2020-01-18 | 2020-06-05 | 上海亚奥阀门有限公司 | Forged steel oxygen stop valve |
| CN111911647A (en) * | 2020-06-16 | 2020-11-10 | 大高石化科技股份有限公司 | Low-torque low-loss valve |
-
1999
- 1999-12-06 CN CN 99125404 patent/CN1299021A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101354094B (en) * | 2007-07-27 | 2011-08-10 | 张跃 | Small electric valve for shock-absorbing protecting torsion force |
| CN102734473A (en) * | 2011-03-29 | 2012-10-17 | 抚顺市博瑞特科技有限公司 | Rotational-free self-sealing valve |
| CN102734473B (en) * | 2011-03-29 | 2014-01-15 | 抚顺市博瑞特科技有限公司 | Rotational-free self-sealing valve |
| WO2016058152A1 (en) * | 2014-10-16 | 2016-04-21 | 余金海 | Gate valve and manufacturing process thereof |
| CN110238430A (en) * | 2019-04-02 | 2019-09-17 | 马鞍山市嘉逸科技工贸有限责任公司 | A kind of high pressure gauge boring device |
| CN110725996A (en) * | 2019-10-18 | 2020-01-24 | 刘月金 | Small-torque high-pressure valve capable of reducing impact force and improving comprehensive performance |
| CN111237486A (en) * | 2020-01-18 | 2020-06-05 | 上海亚奥阀门有限公司 | Forged steel oxygen stop valve |
| CN111911647A (en) * | 2020-06-16 | 2020-11-10 | 大高石化科技股份有限公司 | Low-torque low-loss valve |
| CN111911647B (en) * | 2020-06-16 | 2022-03-15 | 大高石化科技股份有限公司 | Low-torque low-loss valve |
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| C10 | Entry into substantive examination | ||
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |