CN102840358A - Single-flow-direction floating ball metal hard seal ball valve - Google Patents

Single-flow-direction floating ball metal hard seal ball valve Download PDF

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Publication number
CN102840358A
CN102840358A CN2012103098549A CN201210309854A CN102840358A CN 102840358 A CN102840358 A CN 102840358A CN 2012103098549 A CN2012103098549 A CN 2012103098549A CN 201210309854 A CN201210309854 A CN 201210309854A CN 102840358 A CN102840358 A CN 102840358A
Authority
CN
China
Prior art keywords
valve
valve body
ball
metal hard
valve seat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012103098549A
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Chinese (zh)
Inventor
谢宝勇
王大春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGYIN WANXUN AUTOMATIC CONTROL EQUIPMENT CO Ltd
Original Assignee
JIANGYIN WANXUN AUTOMATIC CONTROL EQUIPMENT CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JIANGYIN WANXUN AUTOMATIC CONTROL EQUIPMENT CO Ltd filed Critical JIANGYIN WANXUN AUTOMATIC CONTROL EQUIPMENT CO Ltd
Priority to CN2012103098549A priority Critical patent/CN102840358A/en
Publication of CN102840358A publication Critical patent/CN102840358A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a single-flow-direction floating ball metal hard seal ball valve. The single-flow-direction floating ball metal hard seal ball valve comprises a valve body (1) and a valve deck (2), wherein the valve deck (2) is arranged on one side of the valve body (1). A cavity is arranged inside the valve body (1), a ball body (4) is arranged inside the cavity, and a valve rod (3) is arranged above the valve body (1). The valve rod (3) penetrates through an upper wall of the valve body (1) and is connected with the ball body (4). An upstream valve seat (6) is arranged inside the cavity of the ball body (4), a downstream valve seat (5) is arranged inside the valve deck (2), and the upstream valve seat (6) and the downstream valve seat (5) are arranged on two sides of the ball body (4). A belleville spring (9) is arranged on a joint of the upstream valve seat (6) and the valve body (1), and an installation support (20) is fixed on the valve body (1) and perpendicular to the axis of the valve body (1). The single-flow-direction floating ball metal hard seal ball valve can meet wide application requirements, reduces structure types of ball valves and material inventory, and achieves batch processing in production.

Description

A kind of single current is to the floating ball metal hard-sealing ball valve
Technical field
The present invention relates to the ball valve field, especially relate to a kind of single current to the floating ball metal hard-sealing ball valve.
Background technique
Hard seal ball valve blowing, strength fluid power at the bottom of Coal Chemical Industry, polysilicon, polypropylene, coking plant, still are carried, water flood recovery, occasion extensive uses such as high temperature cuts off, fire prevention isolation.Hard seal ball valve usage range in the past is little; Or only be used for single phase flow; Or only be used for high temperature media; In China's industrialization progression, need the extensively practical hard seal ball valve of a kind of ability of design, it not only can be used for granule medium but also can be suitable for powder medium, not only can gas-liquid carries but also can be suitable for high temperature and cut off, and not only can realize the low differential pressure sealing but also can realize the High Pressure Difference sealing.Carry thickness and easy crystal medium, sealing must permanently effective, the necessary long-term stability of moment of torsion.Under the prerequisite that these field controls require, hard seal ball valve must satisfy these requirements.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, provide a kind of single current to the floating ball metal hard-sealing ball valve.
Technological scheme of the present invention is: a kind of single current comprises valve body 1 and valve gap 2 to the floating ball metal hard-sealing ball valve, and valve gap 2 is arranged on downstream one side of valve body 1; A cavity is arranged in the said valve body 1, a spheroid 4 is arranged in the cavity, the top of valve body 1 is provided with a valve rod 3; The upper wall that valve rod 3 passes valve body 1 is connected with spheroid 4; Also be provided with upper reaches valve seat 6 in the cavity of said valve body 1, be provided with downstream valve seat 5 in the valve gap 2, said upper reaches valve seat 6 and downstream valve seat 5 are positioned at the both sides of spheroid 4; Said upper reaches valve seat 6 is provided with butterfly spring 9 with the joint of valve body 1; Because the butterfly spring is under the less situation of axial deformation, bigger thrust load can be provided, and do not have the gap between each steel wire of spiral compression spring.Can not get into the back because friction and embed the fatigue ruption that causes, so powder and granule medium entering spring cavity can not influence the sealability of upper reaches valve seat yet because of particle.The elastic force of butterfly spring has guaranteed that also spheroid and upper reaches valve seat keep in touch, and has prevented simultaneously because of the bloated dead phenomenon of the high part that causes of serviceability temperature.
Above-mentioned upper reaches valve seat and downstream valve seat are asymmetrical design, and the downstream valve seat does not have initial tension of spring, and upper reaches valve seat is owing to be provided with the butterfly spring; The valve seat pretightening force is arranged; If pressure medium is lower, the spheroid displacement is less, and the sealing of ball valve mainly is to lean on the elastic force of butterfly spring pushing away upper reaches valve seat and spheroid seals; If pressure medium is higher, spheroid can compress the downstream valve seat and seal under the active force of medium, realizes low piezodielectric upstream seal, the sealing of high-pressure medium downstream with this, reduces because of two valve seat scrapings cause moment of torsion to increase.And valve seat cambered surface applying ball face sealing in downstream can be scraped bits to the particle or the toughness medium of spherome surface.
Single current of the present invention is to the floating ball metal hard-sealing ball valve, and the joint of said downstream valve seat 5 and valve gap 2 is provided with the first valve base sealing pad 7; The joint of upper reaches valve seat 6 and valve body 1 also is provided with the second valve base sealing pad 8; Said butterfly spring 9 is connected with upper reaches valve seat 6; The second valve base sealing pad 8 is connected with valve body 1, also is provided with a pressure ring 10 between the butterfly spring 9 and the second valve base sealing pad 8, and pressure ring is given the support of butterfly spring with hard; And an airtight space is provided for beneath sealing gasket, guarantee the longer service life of pad.
Single current of the present invention is to the floating ball metal hard-sealing ball valve, and said valve rod 3 is provided with filler 11 with the joint of valve body 1 upper wall, and filler 11 tops are provided with Gland 12, can prevent that medium is from the valve rod seepage.
Single current of the present invention also is provided with valve bonnet seal pad 15 to the floating ball metal hard-sealing ball valve between said valve gap 2 and the valve body 1, and valve gap 2 is connected through a plurality of stud 16 that a circle is evenly distributed with valve body 1.
Single current of the present invention also is fixed with a mounting bracket 20 to the floating ball metal hard-sealing ball valve on the said valve body 1, the axis normal of said mounting bracket 20 and valve body 1.Also be milled with the right-angle plane 22 of two symmetries on the outer wall of said valve body 1, the two ends of said mounting bracket 20 are all through being bolted on the right angle platform 22, because the axis normal of mounting bracket and valve body, even still stable when bearing high pulling torque.
Single current of the present invention is to the floating ball metal hard-sealing ball valve; The said first valve base sealing pad 7, the second valve base sealing pad 8 and valve bonnet seal pad 15 are the graphite grazing pad; Because the high-purity Expanded graphite that adopts; Lines is a sheet structure, and is very fine and close after assembly parts are suppressed, and therefore can keep permanent sealability.
The invention has the beneficial effects as follows:
The present invention adopts the hard seal ball valve with spline structure can satisfy application requirements widely, has reduced the ball-valve structure kind, has reduced stock material, can also realize the batch process of producing.
Description of drawings
The present invention will explain through example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the sectional view of front view of the present invention;
Fig. 2 is the half sectional view of left view of the present invention.
Embodiment
Disclosed all characteristics in this specification, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.
Disclosed arbitrary characteristic in this specification (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.
Single current as shown in Figure 1 comprises valve body 1 and valve gap 2 to the floating ball metal hard-sealing ball valve, and valve gap 2 is arranged on downstream one side of valve body 1; Be provided with valve bonnet seal pad 15 between said valve gap 2 and the valve body 1, a cavity is arranged in the said valve body 1, a spheroid 4 is arranged in the cavity; The top of valve body 1 is provided with a valve rod 3, and the upper wall that valve rod 3 passes valve body 1 is connected with spheroid 4, also is provided with upper reaches valve seat 6 in the cavity of said valve body 1; Be provided with downstream valve seat 5 in the valve gap 2; Said upper reaches valve seat 6 and downstream valve seat 5 are positioned at the both sides of spheroid 4, and said upper reaches valve seat 6 is provided with butterfly spring 9 with the joint of valve body 1, because the butterfly spring is under the less situation of axial deformation; Bigger thrust load can be provided, and not have the gap between each steel wire of spiral compression spring.Can not get into the back because friction and embed the fatigue ruption that causes, so powder and granule medium entering spring cavity can not influence the sealability of upper reaches valve seat yet because of particle.The elastic force of butterfly spring has guaranteed that also spheroid and upper reaches valve seat keep in touch, and has prevented simultaneously because of the bloated dead phenomenon of the high part that causes of serviceability temperature.
Above-mentioned upper reaches valve seat and downstream valve seat are asymmetrical design, and the downstream valve seat does not have initial tension of spring, and upper reaches valve seat is owing to be provided with the butterfly spring; The valve seat pretightening force is arranged; If pressure medium is lower, the spheroid displacement is less, and the sealing of ball valve mainly is to lean on the elastic force of butterfly spring pushing away upper reaches valve seat and spheroid seals; If pressure medium is higher, spheroid can compress the downstream valve seat and seal under the active force of medium, realizes low piezodielectric upstream seal, the sealing of high-pressure medium downstream with this, reduces because of two valve seat scrapings cause moment of torsion to increase.And valve seat cambered surface applying ball face sealing in downstream can be scraped bits to the particle or the toughness medium of spherome surface.
The joint of said downstream valve seat 5 and valve gap 2 is provided with the first valve base sealing pad 7; The joint of upper reaches valve seat 6 and valve body 1 also is provided with the second valve base sealing pad 8; Said butterfly spring 9 is connected with upper reaches valve seat 6; The second valve base sealing pad 8 is connected with valve body 1, also is provided with a pressure ring 10 between the butterfly spring 9 and the second valve base sealing pad 8, and pressure ring is given the support of butterfly spring with hard; And an airtight space is provided for beneath sealing gasket, guarantee the longer service life of pad.
Said valve rod 3 is provided with filler 11 with the joint of valve body 1 upper wall, and filler 11 tops are provided with Gland 12, can prevent that medium is from the valve rod seepage.
The said first valve base sealing pad 7, the second valve base sealing pad 8 and valve bonnet seal pad 15 are the graphite grazing pad, because the high-purity Expanded graphite that adopts, lines is a sheet structure, and be very fine and close after assembly parts are suppressed, and therefore can keep permanent sealability.
Single current as shown in Figure 2 is to the floating ball metal hard-sealing ball valve, and valve gap 2 is connected through a plurality of stud 16 that a circle is evenly distributed with valve body 1.Also be fixed with a mounting bracket 20 on the said valve body 1, the axis normal of said mounting bracket 20 and valve body 1.Also be milled with the right-angle plane 22 of two symmetries on the outer wall of said valve body 1, the two ends of said mounting bracket 20 are all through being bolted on the right angle platform 22, because the axis normal of mounting bracket and valve body, even still stable when bearing high pulling torque.
The present invention not only can be used for granule medium but also can be suitable for powder medium, not only can gas-liquid carries but also can be suitable for high temperature and cut off, and not only can realize the low differential pressure sealing but also can realize the High Pressure Difference sealing.Can also carry thickness and easy crystal medium, seal permanently effective, moment of torsion is steady in a long-term.
The present invention adopts the hard seal ball valve with spline structure can satisfy application requirements widely, has reduced the ball-valve structure kind, has reduced stock material, can also realize the batch process of producing.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.

Claims (6)

1. a single current comprises valve body (1) and valve gap (2) to the floating ball metal hard-sealing ball valve, and valve gap (2) is arranged on a side of valve body (1); A cavity is arranged in the said valve body (1); A spheroid (4) is arranged in the cavity, and the top of valve body (1) is provided with a valve rod (3), and the upper wall that valve rod (3) passes valve body (1) is connected with spheroid (4); It is characterized in that: also be provided with upper reaches valve seat (6) in the cavity of said valve body (1); Be provided with downstream valve seat (5) in the valve gap (2), said upper reaches valve seats (6) and downstream valve seat (5) are positioned at the both sides of spheroid (4), and said upper reaches valve seats (6) are provided with butterfly spring (9) with the joint of valve body (1); Also be fixed with a mounting bracket (20) on the said valve body (1), the axis normal of said mounting bracket (20) and valve body (1).
2. single current according to claim 1 is characterized in that to the floating ball metal hard-sealing ball valve: the joint of said downstream valve seats (5) and valve gap (2) is provided with the first valve base sealing pad (7); The joint of upper reaches valve seat (6) and valve body (1) also is provided with the second valve base sealing pad (8); Said butterfly spring (9) is connected with upper reaches valve seat (6); The second valve base sealing pad (8) is connected with valve body (1), also is provided with a pressure ring (10) between the butterfly spring (9) and the second valve base sealing pad (8).
3. single current according to claim 1 is characterized in that to the floating ball metal hard-sealing ball valve: said valve rod (3) is provided with filler (11) with the joint of valve body (1) upper wall, and filler (11) top is provided with Gland (12).
4. single current according to claim 1 is to the floating ball metal hard-sealing ball valve; It is characterized in that: also be provided with valve bonnet seal pad (15) between said valve gap (2) and the valve body (1), valve gap (2) is connected through a plurality of stud (16) that a circle is evenly distributed with valve body (1).
5. single current according to claim 1 is to the floating ball metal hard-sealing ball valve; It is characterized in that: also be milled with the right-angle plane (22) of two symmetries on the outer wall of said valve body (1), the two ends of said mounting bracket (20) are all through being bolted on the right angle platform (22).
According to claim 2 or 4 described single currents to the floating ball metal hard-sealing ball valve, it is characterized in that: the said first valve base sealing pad (7), the second valve base sealing pad (8) and valve bonnet seal pad (15) are the graphite grazing pad.
CN2012103098549A 2012-08-29 2012-08-29 Single-flow-direction floating ball metal hard seal ball valve Pending CN102840358A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105156709A (en) * 2015-09-13 2015-12-16 苏州市燃气设备阀门制造有限公司 Gas vertical pipe low-torque angle valve

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020864A (en) * 1975-07-16 1977-05-03 Church Jr Edgar H Ball valve
CN201802909U (en) * 2010-08-16 2011-04-20 成都乘风阀门有限责任公司 Hard sealing ball valve with high temperature and high pressure
CN102155553A (en) * 2011-04-22 2011-08-17 浙江中南阀门有限公司 High-temperature and high-pressure resistant metallic sealing ball valve
CN202100754U (en) * 2011-06-08 2012-01-04 无锡市宝牛阀业有限公司 Metal sealing ball valve
CN202768925U (en) * 2012-08-29 2013-03-06 江阴万讯自控设备有限公司 Single-flow-direction floating ball metal hard sealing ball valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020864A (en) * 1975-07-16 1977-05-03 Church Jr Edgar H Ball valve
CN201802909U (en) * 2010-08-16 2011-04-20 成都乘风阀门有限责任公司 Hard sealing ball valve with high temperature and high pressure
CN102155553A (en) * 2011-04-22 2011-08-17 浙江中南阀门有限公司 High-temperature and high-pressure resistant metallic sealing ball valve
CN202100754U (en) * 2011-06-08 2012-01-04 无锡市宝牛阀业有限公司 Metal sealing ball valve
CN202768925U (en) * 2012-08-29 2013-03-06 江阴万讯自控设备有限公司 Single-flow-direction floating ball metal hard sealing ball valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105156709A (en) * 2015-09-13 2015-12-16 苏州市燃气设备阀门制造有限公司 Gas vertical pipe low-torque angle valve

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Application publication date: 20121226