CN201475404U - Metallic hard sealed ball valve used under high temperature and high pressure - Google Patents

Metallic hard sealed ball valve used under high temperature and high pressure Download PDF

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Publication number
CN201475404U
CN201475404U CN2009201732618U CN200920173261U CN201475404U CN 201475404 U CN201475404 U CN 201475404U CN 2009201732618 U CN2009201732618 U CN 2009201732618U CN 200920173261 U CN200920173261 U CN 200920173261U CN 201475404 U CN201475404 U CN 201475404U
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CN
China
Prior art keywords
valve
valve body
flap
valve seat
high pressure
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.)
Expired - Lifetime
Application number
CN2009201732618U
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Chinese (zh)
Inventor
张峰滨
许文波
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.)
Harbin Songlin Power Station Equipment Co Ltd
Original Assignee
Harbin Songlin Power Station 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 Harbin Songlin Power Station Equipment Co Ltd filed Critical Harbin Songlin Power Station Equipment Co Ltd
Priority to CN2009201732618U priority Critical patent/CN201475404U/en
Application granted granted Critical
Publication of CN201475404U publication Critical patent/CN201475404U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a metallic hard sealed ball valve used under high temperature and high pressure. The ball valve comprises a valve body, a valve clack arranged in the valve body, a valve rod matched with the valve clack, and an inlet valve seat and an outlet seat which are respectively arranged on two sides of the valve clack, wherein the valve body is divided into a left part and a right part, and the outlet valve seat is manufactured to be an integral outlet valve seat integrated with the valve body on the same side. As the outlet valve seat and the valve body are designed to be a whole, the outlet valve seat and the valve body cannot get loose under powerful impact of high-temperature and high-pressure medium, so that the ball valve is prevented from leakage caused by oversize gap between the outlet valve seat and the valve body and a damaged sealing surface.

Description

The High Temperature High Pressure metal hard-sealing ball valve
Technical field
The utility model relates to a kind of ball valve, relates in particular to the metal hard-sealing ball valve under a kind of high temperature and high pressure condition.
Background technique
In the power industry field, there are bad working environments such as High Temperature High Pressure everywhere, the economical operation of power plant needs the high-quality ball valve of maintenance high-seal that can be continual and steady.
At present, the High Temperature High Pressure ball valve that the state time generator group is used mainly is from external import, and the phenomenon that the sealing surface of the ball valve of external import mainly adopts the form of surfacing, spray-welding coating in use often to have and comes off takes place, thereby cause ball valve to be revealed, cause very big loss to the user.Simultaneously, inlet ball valve also exists and costs an arm and a leg and problem such as lead time is long.
The model utility content
For overcoming the above-mentioned defective of prior art, the utility model provides a kind of High Temperature High Pressure metal hard-sealing ball valve, makes the outlet valve seat under the brute force of high-temperature high-pressure medium is impacted, not can and valve body between produce looseningly, cause the leakage of ball valve.
The technical solution adopted in the utility model: a kind of High Temperature High Pressure metal hard-sealing ball valve, comprise valve body, be arranged on flap in the valve body, with the supporting valve rod of described flap be arranged on the inlet valve seat and the outlet valve seat of flap both sides, described valve body is divided into left and right sides two-part, and the valve body that described outlet valve seat is arranged to a side of living in it is the integrated type outlet valve seat of one.
Adopt the mode of screw-thread fit to be connected between the valve body part of being arranged to one with described outlet valve seat and the valve body of opposite side.
The valve body part of being arranged to one with described outlet valve seat also adopts the mode of welding to be connected with the screw thread screw-on place between the valve body of opposite side.
The connecting end of described flap and described valve rod is provided with groove, the connecting end of described valve rod and described flap is arranged to the shape with described groove fit, and insert the groove of described flap, the joint of described valve rod and described flap is provided with matching gap, the center line of described flap and the central lines of described valve rod.
Can be provided with the valve pocket that is used for described valve rod location that cooperates with described valve rod between the upper end of the joint of described valve rod and described flap, described valve rod and described valve body.
Can also be with seal ring on the described valve rod, described seal ring is positioned at the top of described valve pocket.
Be filled with filler between described valve rod and the described valve body, described filler is filled in the top of described seal ring, described filler top be provided with described valve rod and described valve body between the Gland that matches of seam shape, described Gland on described valve body, is provided with dish-like pad between the nut of described screw and the described Gland by screw.
Can be provided with the dish spring between described inlet valve seat and the described valve body.
Described inlet valve seat and integrated type outlet valve seat are provided with the wedge angle towards described flap direction.
Sealing means between described inlet valve seat and integrated type outlet valve seat and the described flap can adopt the mode of metal hard-sealing.
The beneficial effects of the utility model: the integrated design of the valve body of outlet valve seat of the present utility model and its side of living in, make described outlet valve seat under the brute force of high-temperature high-pressure medium is impacted not can and valve body between produce the loosening ball valve that causes and reveal; The introducing of seal ring has not only been played the effect while of sliding bearing but also has been strengthened sealability; Dish-like pad is set on Gland makes that filler is evenly compressed, sealing is reliable; Dish spring between inlet valve seat and the valve body can provide initial pretightening unit sealing load; The design of the wedge angle on inlet valve seat and the outlet valve seat makes to reach self-cleaning purpose by impurity, the particle that can remove the influence sealing of flap surface when ball valve opens and closes, reduces the possibility that sealing surface is scratched to the full extent.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
The utility model provides a kind of High Temperature High Pressure metal hard-sealing ball valve, comprise valve body 1, be arranged on flap 2 in the valve body, with the supporting valve rod 3 of described flap be arranged on the inlet valve seat 4 and the outlet valve seat of flap both sides, described valve body is divided into left and right sides two-part, the valve body that described outlet valve seat is arranged to a side of living in it is the integrated type outlet valve seat 5 of one, make described outlet valve seat under the brute force of high-temperature high-pressure medium is impacted, not can and described valve body between produce loosening, cause the leakage of ball valve, also make maintenance convenient simultaneously.
Adopt the mode of screw-thread fit to be connected between the valve body part of being arranged to one with described outlet valve seat and the valve body of opposite side, the screw thread screw-on place can adopt the mode of welding to connect again.The Placement of screw-thread fit can play the effect of decompression, and welded structure can also place the sealing surface of described outlet valve seat the accurate position of designing requirement in advance when guaranteeing the necessary intensity of described valve body.
The connecting end of described flap and described valve rod is provided with groove, the connecting end of described valve rod and described flap is arranged to the shape with described groove fit, and insert the groove of described flap, the joint of described valve rod and described flap is provided with matching gap, the center line of described flap and the central lines of described valve rod.Because the connecting end of described valve rod and described flap is arranged to the shape with described groove fit, therefore when the described valve rod of rotation, described valve rod can drive described flap after through a little rotating process and rotate together, this kind structural design makes when described valve rod is controlled the rotation of described flap, described valve rod can not produce side force, described filler can not influence sealing because displacement takes place valve rod yet, has not only prolonged working life but also make thrust output can hundred-percently be used for the action of switching ball.
Described valve rod can adopt the control mode of manual, electronic, pneumatic and handwheel to control it and drive described flap rotation, also can adopt other suitable control mode control, thereby reaches the control to the opening and closing of ball valve.
Described valve rod can be arranged to make horizontally rotating of 1/4 week, thereby drive described flap and carry out 90 ° of rotations, such design make between the part that described valve rod and other be in contact with it wearing and tearing seldom, and stroke can not change because of the rising or the reduction of ambient temperature yet.
Cover is useful on the valve pocket 6 of described valve rod location on the described valve rod, the position of described valve pocket is arranged on the upper end of the joint of described valve rod and described flap, the top of described valve pocket can be provided with the seal ring 7 that is enclosed within on the described valve rod, the inwall of described seal ring and described valve body and described valve pocket can mate through grinding before installing, can also the enhanced leaktightness ability when making described seal ring play the sliding bearing effect.
Can be filled with filler 8 between described valve rod and the described valve body, described filler is filled in the top of described seal ring, described filler top can be provided with described valve rod and described valve body between the Gland 9 that matches of seam shape, described Gland on described valve body, can be provided with dish-like pad 10 between the nut of described screw and the described Gland by screw.The use of described dish-like pad can make described filler by compression, sealing force are evenly distributed, seal reliable uniformly, described filler can adopt wire to strengthen and the filler made, make described filler non-maintaining, when the described filler of manual tune, also can not increase the work moment of ball valve.
Can be provided with dish spring 11 between described inlet valve seat and the described valve body, described dish spring can be selected Materials with High Strength such as making such as UNS NO7750 (X-750) or R-26 for use, described dish spring can be for providing initial pretightening unit sealing load between described inlet valve seat and the described valve body, make ball valve under the low pressure situation, keep sealability, under high pressure can obtain a higher sealing shearing force again, under the effect of medium, make the sealing between described flap and the described inlet valve seat tighter, reach zero leakage, can also reduce simultaneously because the excessive friction that thermal expansion caused.Between described inlet valve seat and the described valve body enough expansion spaces can be set, even make that ball valve also can be worked reliably under the situation that causes distortion at the temperature drastic change.
Under the effect of described dish spring; the sealing surface of described flap and described inlet valve seat and integrated type outlet valve seat remains to be close to, and reaches best sealing effect, and sealing surface is protected; can not leak cruelly in carbonated drink medium at a high speed, reduce and avoided washing away generation with cavitation phenomenon.
Can be provided with wedge angle on described inlet valve seat and the integrated type outlet valve seat towards described flap direction, make it when ball valve opens and closes, can remove impurity and particle that described flap surface can influence sealing, reach self-cleaning purpose, farthest reduce the possibility that sealing surface is scratched.
Sealing means between described inlet valve seat and integrated type outlet valve seat and the described flap adopts the mode of metal hard-sealing, adopts the mode of metal hard-sealing both can increase the service life, and also can make sealing more reliable simultaneously.
Each part of ball valve can adopt international advanced materials such as UNS NO7718 or Gr616, sealing surface place between described flap and described inlet valve seat and the integrated type outlet valve seat, can carry out surface Hardening Treatment, its hardness can reach more than the dimension formula hardness HV950, have superpower corrosion-resistant and wear-resistant ability, can be under bad working environments such as various high temperature, high pressure, big pressure reduction and high flow rate long-time stable operation.

Claims (10)

1. High Temperature High Pressure metal hard-sealing ball valve, comprise valve body, be arranged on flap in the valve body, with the supporting valve rod of described flap be arranged on the inlet valve seat and the outlet valve seat of flap both sides, described valve body is divided into left and right sides two-part, it is characterized in that described outlet valve seat is arranged to the integrated type outlet valve seat that the valve body of a side of living in it is an one.
2. adopt the mode of screw-thread fit to be connected between the High Temperature High Pressure metal hard-sealing ball valve as claimed in claim 1, the valve body part that it is characterized in that being arranged to one and the valve body of opposite side with described outlet valve seat.
3. High Temperature High Pressure metal hard-sealing ball valve as claimed in claim 2, the valve body part that it is characterized in that being arranged to one with described outlet valve seat also adopts the mode of welding to be connected with the screw thread screw-on place between the valve body of opposite side.
4. High Temperature High Pressure metal hard-sealing ball valve as claimed in claim 3, the connecting end that it is characterized in that described flap and described valve rod is provided with groove, the connecting end of described valve rod and described flap is arranged to the shape with described groove fit, and insert the groove of described flap, the joint of described valve rod and described flap is provided with matching gap, the center line of described flap and the central lines of described valve rod.
5. High Temperature High Pressure metal hard-sealing ball valve as claimed in claim 4 is characterized in that cover is useful on the valve pocket that described valve rod is located on the described valve rod, and the position of described valve pocket is arranged on the upper end of the joint of described valve rod and described flap.
6. High Temperature High Pressure metal hard-sealing ball valve as claimed in claim 5 is characterized in that also being with seal ring on the described valve rod, and described seal ring is positioned at the top of described valve pocket.
7. High Temperature High Pressure metal hard-sealing ball valve as claimed in claim 6, it is characterized in that being filled with filler between described valve rod and the described valve body, described filler is filled in the top of described seal ring, described filler top be provided with described valve rod and described valve body between the Gland that matches of seam shape, described Gland on described valve body, is provided with dish-like pad between the nut of described screw and the described Gland by screw.
8. High Temperature High Pressure metal hard-sealing ball valve as claimed in claim 7 is characterized in that being provided with the dish spring between described inlet valve seat and the described valve body.
9. High Temperature High Pressure metal hard-sealing ball valve as claimed in claim 8 is characterized in that described inlet valve seat and integrated type outlet valve seat is provided with the wedge angle towards described flap direction.
10. as claim 1,2,3,4,5,6,7,8 or 9 described High Temperature High Pressure metal hard-sealing ball valves, it is characterized in that the mode of the sealing means employing metal hard-sealing between described inlet valve seat and integrated type outlet valve seat and the described flap.
CN2009201732618U 2009-08-25 2009-08-25 Metallic hard sealed ball valve used under high temperature and high pressure Expired - Lifetime CN201475404U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201732618U CN201475404U (en) 2009-08-25 2009-08-25 Metallic hard sealed ball valve used under high temperature and high pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201732618U CN201475404U (en) 2009-08-25 2009-08-25 Metallic hard sealed ball valve used under high temperature and high pressure

Publications (1)

Publication Number Publication Date
CN201475404U true CN201475404U (en) 2010-05-19

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101922585A (en) * 2010-08-12 2010-12-22 太仓优尼泰克精密机械有限公司 Valve member
CN102878318A (en) * 2012-08-21 2013-01-16 上海开维喜阀门集团有限公司 Integrated valve seat of metal sealing ball valve
CN102900863A (en) * 2012-10-26 2013-01-30 南通龙源电站阀门有限公司 Quick assembly and disassembly ball valve
CN102927311A (en) * 2012-11-10 2013-02-13 无锡智能自控工程股份有限公司 One-way sealing top-installing adjusting ball valve
CN106151572A (en) * 2015-04-01 2016-11-23 无锡鑫华控阀业有限公司 High-temp and-pressure ball valve
CN107269877A (en) * 2017-07-26 2017-10-20 昆山维萨阀门有限公司 A kind of integral type HTHP seal ball-valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101922585A (en) * 2010-08-12 2010-12-22 太仓优尼泰克精密机械有限公司 Valve member
CN102878318A (en) * 2012-08-21 2013-01-16 上海开维喜阀门集团有限公司 Integrated valve seat of metal sealing ball valve
CN102900863A (en) * 2012-10-26 2013-01-30 南通龙源电站阀门有限公司 Quick assembly and disassembly ball valve
CN102927311A (en) * 2012-11-10 2013-02-13 无锡智能自控工程股份有限公司 One-way sealing top-installing adjusting ball valve
CN106151572A (en) * 2015-04-01 2016-11-23 无锡鑫华控阀业有限公司 High-temp and-pressure ball valve
CN107269877A (en) * 2017-07-26 2017-10-20 昆山维萨阀门有限公司 A kind of integral type HTHP seal ball-valve

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CX01 Expiry of patent term

Granted publication date: 20100519

CX01 Expiry of patent term