CN106609873B - Elastic hard sealing balanced valve core - Google Patents

Elastic hard sealing balanced valve core Download PDF

Info

Publication number
CN106609873B
CN106609873B CN201510688364.8A CN201510688364A CN106609873B CN 106609873 B CN106609873 B CN 106609873B CN 201510688364 A CN201510688364 A CN 201510688364A CN 106609873 B CN106609873 B CN 106609873B
Authority
CN
China
Prior art keywords
sleeve
valve
valve seat
outer sleeve
throttling
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.)
Active
Application number
CN201510688364.8A
Other languages
Chinese (zh)
Other versions
CN106609873A (en
Inventor
陈刚
杨雪华
徐兴华
干瑞斌
龚宝龙
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.)
CNNC Sufa Technology Industry Co Ltd
Original Assignee
CNNC Sufa Technology Industry 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 CNNC Sufa Technology Industry Co Ltd filed Critical CNNC Sufa Technology Industry Co Ltd
Priority to CN201510688364.8A priority Critical patent/CN106609873B/en
Publication of CN106609873A publication Critical patent/CN106609873A/en
Application granted granted Critical
Publication of CN106609873B publication Critical patent/CN106609873B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20Excess-flow valves

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

The invention belongs to a valve core, and particularly relates to an elastic hard seal balanced type valve core. The valve comprises an upper part and a lower part, wherein the upper part comprises an outer sleeve and an upper valve seat, the inner wall of the lowermost end of the outer sleeve is provided with a central annular bulge, the upper valve seat is buckled on the annular bulge of the outer sleeve, a disc spring, a pressure ring and a graphite sealing ring are arranged in an annular space formed by the upper valve seat and the outer sleeve, a pressing sleeve is arranged at a position above the valve seat on the inner side wall of the outer sleeve and fixedly connected with the outer sleeve, the lower part comprises a throttling sleeve and a valve seat, a valve clack is arranged in the throttling sleeve, and a. The invention has the following advantages: the invention discloses an elastic hard sealing balanced type valve core structure, which is a novel sealing structure for a balanced type double-sealing surface sleeve type regulating valve. The design of the valve sleeve structure enables the valve to simultaneously meet the combined action working conditions of various complex requirements such as large caliber, high temperature, high pressure difference, high solid content and the like, and meanwhile, the lower leakage rate can be realized.

Description

Elastic hard sealing balanced valve core
Technical Field
The invention belongs to a valve core, and particularly relates to an elastic hard seal balanced type valve core.
Background
Sleeve type regulating valves have matured considerably over the years and are one of the mainstream regulating valve products on the market today. The sleeve type regulating valve has the main advantages that: the guiding is reliable and the stability is good; the inner part is connected without screw thread, so the maintenance is convenient; the requirements of a plurality of structures for adapting to different working conditions can be changed.
Sleeve valves generally have three configurations in which internal pressure acts: the valve cage is guided to the single-seat sleeve valve and the balanced single-seat sleeve valve; balanced type double-sealing surface sleeve valve. Their main differences are the number of seats, respectively: a single valve seat; adding a sliding seal for the single valve seat; a double valve seat.
In the valve cage guide single-seat sleeve valve, the sleeve only serves as a guide and a pressing valve seat, and can be regarded as an improved variety of a common single seat. It is used in small caliber and low pressure difference as single seat valve.
The balanced single-seat sleeve valve is used in common working condition and consists of one main valve seat seal and one sliding seal in the upper part. It has the same advantages as a single seat valve: the pressure balance valve has the characteristics of easy manufacture, convenient maintenance and pressure balance, and can be used for the conditions of large caliber and high pressure difference. However, the sliding seal at the upper part also brings great influence on the reliability of the valve, and the repeated movement and abrasion of the sliding seal ring cannot be avoided, so that the service life is limited. Meanwhile, the balance ring is sensitive to the cleanliness of the medium and is not suitable for the working condition containing solid particles.
The balanced double-sealing-surface sleeve valve has the advantages of simple and reliable structure, soft sealing in a common structure and better performance of the whole machine. However, if the double-channel hard seal is made to cope with complex severe working conditions including large caliber, high temperature, high pressure and high pressure difference, the processing and manufacturing requirements are quite high. The reason is that the double sealing surfaces of the valve core and the valve seat are in rigid states, and the complete fitting difficulty is high. The sealing is difficult, and the leakage amount is a disadvantage inherent in the sealing.
Disclosure of Invention
The invention aims to provide an elastic hard seal balanced type valve core aiming at the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: an elastic hard sealing balanced type valve core comprises an upper part and a lower part, wherein the upper part comprises an outer sleeve and an upper valve seat, the inner wall of the lowermost end of the outer sleeve is provided with an annular bulge towards the center, the upper valve seat is a part with an L-shaped section, the upper valve seat is buckled on the annular bulge of the outer sleeve, a disc spring, a pressing ring and a graphite sealing ring are arranged in an annular space formed by the upper valve seat and the outer sleeve, the disc spring and the pressing ring form elasticity, the graphite sealing ring is used for sealing, a pressing sleeve is arranged at a position above the valve seat on the inner side wall of the outer sleeve, the pressing sleeve is fixedly connected with the outer sleeve,
the lower part comprises a throttling sleeve and a valve seat, wherein the valve seat is arranged at the lowest part, the throttling sleeve is a cylindrical part, the diameter of the throttling sleeve is matched with that of the outer sleeve, the connecting surface of the throttling sleeve and the outer sleeve is also matched, the throttling sleeve and the outer sleeve can be tightly connected,
a valve clack is arranged in the throttling sleeve, and a valve rod is arranged in the center of the valve clack.
The elastic hard seal balanced type valve core is characterized in that the outer sleeve is fixedly connected with the compression sleeve through a compression screw.
The elastic hard seal balanced type valve core is characterized in that the width of the compression sleeve is smaller than that of the upper valve seat, and the upper valve seat and the valve clack are provided with chamfers matched with each other.
The elastic hard seal balanced type valve core is characterized in that the disc spring is provided with a first end and a second end, and the first end is connected with the valve actuating mechanism.
The invention has the following advantages: the invention discloses an elastic hard sealing balanced type valve core structure, which is a novel sealing structure for a balanced type double-sealing surface sleeve type regulating valve. The design of the valve sleeve structure enables the valve to simultaneously meet the combined action working conditions of various complex requirements such as large caliber, high temperature, high pressure difference, high solid content and the like, and meanwhile, the lower leakage rate can be realized. The leakage grade can be improved to be above grade IV from the original grade III leakage rate specified by GB/T4213-2008.
Drawings
FIG. 1 is a schematic structural diagram of an elastic hard seal balanced type valve core;
FIG. 2 is a schematic diagram of installation of an elastic hard seal balanced type valve core structure regulating valve.
In the figure: 1. valve seat, 2 throttling sleeve, 3 valve clack, 4 outer sleeve, 5 disc spring, 6 pressing ring, 7 graphite sealing ring, 8 upper valve seat, 9 pressing sleeve, 10 valve rod, 11 pressing screw, 12 valve body, 16 valve cover, 17 middle flange bolt
Detailed Description
As shown in the attached figure 1, the elastic hard sealing balanced type valve core comprises an upper part and a lower part, wherein the upper part comprises an outer sleeve 4 and an upper valve seat 8, the inner wall of the lowest end of the outer sleeve 4 is provided with an annular bulge towards the center, the upper valve seat 8 is a part with an L-shaped section, the upper valve seat 8 is buckled on the annular bulge of the outer sleeve 4, a disc spring 5, a pressing ring 6 and a graphite sealing ring 7 are arranged in an annular space formed by the upper valve seat 8 and the outer sleeve 4, the disc spring 5 and the pressing ring 6 form elasticity, the graphite sealing ring 7 is used for sealing, a pressing sleeve 9 is arranged at a position above the valve seat 8 on the inner side wall of the outer sleeve 4, and the,
the lower part comprises a throttling sleeve 2 and a valve seat 1, wherein the valve seat 1 is arranged at the lowest part, the throttling sleeve 2 is a cylindrical part, the diameter of the throttling sleeve is matched with that of an outer sleeve 4, the connecting surfaces of the throttling sleeve 2 and the outer sleeve 4 are also matched to ensure that the throttling sleeve 2 and the outer sleeve 4 can be tightly connected,
a valve clack 3 is arranged in the throttling sleeve 2, and a valve rod 10 is arranged in the center of the valve clack 3.
The compression sleeve 9 is fixedly connected with the outer sleeve 4 through a compression screw 11.
The width of the compression sleeve 9 is smaller than that of the upper valve seat 8, and the upper valve seat 8 and the valve clack 3 are provided with chamfers matched with each other.
The pretightening force of the disc spring 5 is half of the maximum driving force provided by the valve actuating mechanism.
As shown in fig. 2, the installation structure of the valve core of the present application is roughly: the valve core is installed in the reservation intracavity of valve body 12, and the disk seat 1 of valve core sets up at the lower extreme, sets up valve gap 16 at the top of valve body 12, and valve gap 16 passes through middle flange bolt 17 and valve body 12 fixed connection, and valve rod 10 stretches out the valve gap 16 outside.

Claims (1)

1. The utility model provides an elasticity seals balanced type case firmly which characterized in that: comprises an upper part and a lower part, the upper part comprises an outer sleeve (4) and an upper valve seat (8), the inner wall of the lowest end of the outer sleeve (4) is provided with an annular bulge towards the center, the upper valve seat (8) is a part with an L-shaped section, the upper valve seat (8) is buckled on the annular bulge of the outer sleeve (4), a disc spring (5), a pressing ring (6) and a graphite sealing ring (7) are arranged in an annular space formed by the upper valve seat (8) and the outer sleeve (4), wherein the disc spring (5) and the pressing ring (6) form elasticity, the graphite sealing ring (7) is used for sealing, a pressing sleeve (9) is arranged at a position above the valve seat (8) on the inner side wall of the outer sleeve (4), and the pressing sleeve (9) is fixedly connected,
the lower part comprises a throttling sleeve (2) and a valve seat (1), wherein the valve seat (1) is arranged at the lowest part, the throttling sleeve (2) is a cylindrical part, the diameter of the throttling sleeve is matched with that of the outer sleeve (4), the connecting surface of the throttling sleeve (2) and the outer sleeve (4) is also matched, the two can be tightly connected,
a valve clack (3) is arranged in the throttling sleeve (2), and a valve rod (10) is arranged in the center of the valve clack (3);
the compression sleeve (9) is fixedly connected with the outer sleeve (4) through a compression screw (11);
the width of the compression sleeve (9) is smaller than that of the upper valve seat (8), and chamfers matched with each other are arranged on the upper valve seat (8) and the valve clack (3);
the pretightening force of the disc spring (5) is half of the maximum driving force provided by the valve actuating mechanism.
CN201510688364.8A 2015-10-22 2015-10-22 Elastic hard sealing balanced valve core Active CN106609873B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510688364.8A CN106609873B (en) 2015-10-22 2015-10-22 Elastic hard sealing balanced valve core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510688364.8A CN106609873B (en) 2015-10-22 2015-10-22 Elastic hard sealing balanced valve core

Publications (2)

Publication Number Publication Date
CN106609873A CN106609873A (en) 2017-05-03
CN106609873B true CN106609873B (en) 2020-01-07

Family

ID=58610741

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510688364.8A Active CN106609873B (en) 2015-10-22 2015-10-22 Elastic hard sealing balanced valve core

Country Status (1)

Country Link
CN (1) CN106609873B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112705051B (en) * 2021-01-21 2023-03-31 烟台金正环保科技有限公司 Membrane column using upper flange and pressing sleeve

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7926783B1 (en) * 2009-12-08 2011-04-19 Liu Hsiu-Hsiung Safety type quick release connector
CN203442151U (en) * 2013-08-28 2014-02-19 浙江贝尔控制阀门有限公司 Automatic compensation sleeve double-seat valve
CN203847727U (en) * 2014-05-05 2014-09-24 浙江三方控制阀股份有限公司 Valve sleeve structure capable of compensating for thermal expansion and cold contraction automatically under high-temperature condition
CN204004645U (en) * 2014-08-18 2014-12-10 浙江金锋自动化仪表有限公司 Soft seal sleeve adjusting valve
CN205423987U (en) * 2015-10-22 2016-08-03 中核苏阀科技实业股份有限公司 Elasticity balanced type case sealed firmly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7926783B1 (en) * 2009-12-08 2011-04-19 Liu Hsiu-Hsiung Safety type quick release connector
CN203442151U (en) * 2013-08-28 2014-02-19 浙江贝尔控制阀门有限公司 Automatic compensation sleeve double-seat valve
CN203847727U (en) * 2014-05-05 2014-09-24 浙江三方控制阀股份有限公司 Valve sleeve structure capable of compensating for thermal expansion and cold contraction automatically under high-temperature condition
CN204004645U (en) * 2014-08-18 2014-12-10 浙江金锋自动化仪表有限公司 Soft seal sleeve adjusting valve
CN205423987U (en) * 2015-10-22 2016-08-03 中核苏阀科技实业股份有限公司 Elasticity balanced type case sealed firmly

Also Published As

Publication number Publication date
CN106609873A (en) 2017-05-03

Similar Documents

Publication Publication Date Title
CN104329475B (en) Three-eccentric and bidirectional metal sealing butterfly valve
CN203770752U (en) Check valve
CN203516886U (en) Pilot-operated balance valve element of adjusting-type valve
CN203906910U (en) Axial-flow type ball check valve
CN203067789U (en) Double-hard-sealing sleeve type regulating valve with flexible structure
CN106609873B (en) Elastic hard sealing balanced valve core
CN202001646U (en) Cage type regulating valve with single seat
CN102644760B (en) Sealing structure of ultrahigh-pressure needle valve
CN201916572U (en) Pneumatic and hydraulic cone valve for high-pressure water descaling
CN203239986U (en) Integrated type high performance partitioning valve
CN203641557U (en) Double-layer sealing gasket
CN106439211B (en) Valve rod assembly on electronic expansion valve
CN201909060U (en) High-temperature metal sealing oxygen ball valve
CN202580212U (en) Corrosion-resistance parallel double-disc gate valve
CN205896234U (en) Bivalve stopper control valve
CN212616339U (en) Two-way sealing stop valve
CN205423987U (en) Elasticity balanced type case sealed firmly
CN204213365U (en) Three eccentric two-way metallic sealing butterfly valve
CN209213030U (en) A kind of double sealing structure in pressure balance type regulating valve
CN209385700U (en) A kind of high-performance two-way hard seal spiral valve
CN102367879A (en) Top-entry floating ball valve
CN204083287U (en) Bellows two-seater telescoping valve mangetic core assembly
CN208997388U (en) A kind of wear resistance ball valve
CN203718010U (en) High-pressure ball valve
CN203500489U (en) Floating valve seat balanced-type high-temperature regulating cutoff valve

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant