CN203940050U - The hard selfsealings circle of the oblique lobe formula of high-pressure anticorrosion non-return flap for the heart of nuclear power island - Google Patents

The hard selfsealings circle of the oblique lobe formula of high-pressure anticorrosion non-return flap for the heart of nuclear power island Download PDF

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Publication number
CN203940050U
CN203940050U CN201420341460.6U CN201420341460U CN203940050U CN 203940050 U CN203940050 U CN 203940050U CN 201420341460 U CN201420341460 U CN 201420341460U CN 203940050 U CN203940050 U CN 203940050U
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CN
China
Prior art keywords
flap
hard
valve
selfsealings circle
nuclear power
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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 - Fee Related
Application number
CN201420341460.6U
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Chinese (zh)
Inventor
徐永明
胡永祥
郭玉林
赵怀忠
朱祥
Original Assignee
NANTONG STATE ELECTRIC POWER VALVE CO Ltd
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Filing date
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Application filed by NANTONG STATE ELECTRIC POWER VALVE CO Ltd filed Critical NANTONG STATE ELECTRIC POWER VALVE CO Ltd
Priority to CN201420341460.6U priority Critical patent/CN203940050U/en
Application granted granted Critical
Publication of CN203940050U publication Critical patent/CN203940050U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to field of check valves, is specifically related to the hard selfsealings circle of the oblique lobe formula of a kind of nuclear power island heart high-pressure anticorrosion non-return flap.The utility model proposes the hard selfsealings circle of the oblique lobe formula of a kind of nuclear power island heart high-pressure anticorrosion non-return flap, flap, valve seat can be designed to conical surface seal, flap has certain inclination, its flow resistance is diminished, while solving non-return flap use, noise is large, the flimsy problem of valve clack sealing surface, increases the service life.The utility model has the advantages that valve seal: primary plane sealing is now conical surface seal; Pressure increases: below former 1500Lb, be now 2500Lb; Selfsealings circle: former soft seal, existing is hard sealing; Solve valve sealing face zero seepage, improved the anti-cavitation of flap and valve seat and the ability of antiscour, improve overall performance and the working life of valve.

Description

The hard selfsealings circle of the oblique lobe formula of high-pressure anticorrosion non-return flap for the heart of nuclear power island
Technical field
The utility model relates to field of check valves, is specifically related to the hard selfsealings circle of the oblique lobe formula of a kind of nuclear power island heart high-pressure anticorrosion non-return flap.
Background technique
Check valve claims again one-way valve or Swing check valve, and its effect is to prevent that the medium in pipeline from flowing backwards.Check valve is because structure is rotary-open type, when flap and valve base sealing, be plane sealing, generally occur in use the phenomenon that flow resistance is large, and flow resistance greatly not only cause large noise, also make valve itself in use cause the sealing surface of flap easily to destroy, affect its working life.Former check valve self-sealing material is folder nickel wire graphite, and pressure is below 1500Lb.The risk that the large existence of pressure is certain, pressure testing device is wanted the requirement that can bear large pressure, will take care especially.
Summary of the invention
In order to solve foregoing invention problem, the utility model proposes the hard selfsealings circle of the oblique lobe formula of a kind of nuclear power island heart high-pressure anticorrosion non-return flap, flap, valve seat can be designed to conical surface seal, flap has certain inclination, its flow resistance is diminished, while solving non-return flap use, noise is large, and the flimsy problem of valve clack sealing surface, increases the service life.
In order to reach foregoing invention object, the utility model proposes following technological scheme:
The hard selfsealings circle of the oblique lobe formula of high-pressure anticorrosion non-return flap for the heart of nuclear power island, it comprises valve body, valve seat, flap, valve gap, selfsealings circle, gasket ring, pendant collet, suspension ring, cover plate and filler axle, flap is housed in the middle of valve body, between flap and valve body, valve seat is housed, valve gap is equipped with in valve body upper end, selfsealings circle is housed between valve gap and valve body, gasket ring and pendant collet, selfsealings circle is pressed on valve gap, selfsealings circle upper end is pressed with gasket ring, gasket ring upper end is pressed with pendant collet, pendant collet upper end is pressed with cover plate, cover plate is fixed on valve gap upper end by screw bolt and nut, suspension ring are contained in the middle of cover plate upper end, flap runs through flap upper end by bearing pin and is fixed on valve body.
Described bearing pin two ends are fixed on valve body, and between bearing pin two ends and valve body, lining is housed, filler axle is equipped with at bearing pin two ends, filler axle is positioned in the middle of filler, (on filler axle, filler being housed), bearing pin two ends compress filler by Gland, and Gland is fixed on valve body by nuts and bolt.
Sealing surface between described valve seat and flap is conical seal (contact) face.
Described selfsealings circle is hard seal ring.
The described nuclear power island heart is below 2500Lb with the working pressure of the hard selfsealings circle of the oblique lobe formula of high-pressure anticorrosion non-return flap.
The utility model has the advantages that valve seal: primary plane sealing is now conical surface seal; Pressure increases: below former 1500Lb, be now 2500Lb; Selfsealings circle: former soft seal, existing is hard sealing; Solve valve sealing face zero seepage, improved the anti-cavitation of flap and valve seat and the ability of antiscour, improve overall performance and the working life of valve.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is the local enlarged diagram of the utility model filler axle.
Embodiment
For the utility model is further illustrated to introduction, introduce below in conjunction with Figure of description:
With reference to accompanying drawing 1, the hard selfsealings circle of the oblique lobe formula of high-pressure anticorrosion non-return flap for the heart of nuclear power island, it comprises valve body 1, valve seat 2, flap 3, valve gap 4, selfsealings circle 5, gasket ring 6, pendant collet 7, suspension ring 8, cover plate 11 and bearing pin 12, flap 3 is housed in the middle of valve body 1, between flap 3 and valve body 1, valve seat 2 is housed, valve gap 4 is equipped with in valve body 1 upper end, between valve gap 4 and valve body 1, selfsealings circle 5 is housed, gasket ring 6 and pendant collet 7, selfsealings circle 5 is pressed on valve gap 4, selfsealings circle 5 upper ends are pressed with gasket ring 6, gasket ring 6 upper ends are pressed with pendant collet 7, pendant collet 7 upper ends are pressed with cover plate 11, cover plate 11 is fixed on valve gap 4 upper ends by bolt 9 and nut 10, suspension ring 8 are contained in the middle of cover plate 11 upper ends, flap 3 runs through flap 3 upper ends by bearing pin 12 and is fixed on valve body 1.
With reference to Fig. 2, described bearing pin 12 two ends are fixed on valve body 1, and between bearing pin 12 two ends and valve body 1, lining 16 is housed, filler axle 14 is equipped with at bearing pin 12 two ends, filler axle 14 is positioned in the middle of filler 13, (filler 13 is housed on filler axle 14), bearing pin 12 two ends compress filler 13 by Gland 15, and Gland 15 is fixed on valve body 1 by nuts and bolt.
Sealing surface between described valve seat 2 and flap 3 is conical seal (contact) face.

Claims (5)

1. the hard selfsealings circle of the oblique lobe formula of high-pressure anticorrosion non-return flap for the heart of nuclear power island, it comprises valve body, valve seat, flap, valve gap, selfsealings circle, gasket ring, pendant collet, suspension ring, cover plate, it is characterized in that, in the middle of valve body, flap is housed, between flap and valve body, valve seat is housed, valve gap is equipped with in valve body upper end, selfsealings circle is housed between valve gap and valve body, gasket ring and pendant collet, selfsealings circle is pressed on valve gap, selfsealings circle upper end is pressed with gasket ring, gasket ring upper end is pressed with pendant collet, pendant collet upper end is pressed with cover plate, cover plate is fixed on valve gap upper end by screw bolt and nut, suspension ring are contained in the middle of cover plate upper end, flap runs through flap upper end by bearing pin and is fixed on valve body.
2. the hard selfsealings circle of the oblique lobe formula of high-pressure anticorrosion non-return flap for the heart of nuclear power according to claim 1 island, it is characterized in that described bearing pin two ends are fixed on valve body, and between bearing pin two ends and valve body, lining is housed, filler axle is equipped with at bearing pin two ends, on filler axle, filler is housed, filler axle is positioned in the middle of filler, and bearing pin two ends compress filler by Gland, and Gland is fixed on valve body by nuts and bolt.
3. the hard selfsealings circle of the oblique lobe formula of high-pressure anticorrosion non-return flap for the heart of nuclear power according to claim 1 island, is characterized in that the sealing surface between described valve seat and flap is conical seal (contact) face.
4. the hard selfsealings circle of the oblique lobe formula of high-pressure anticorrosion non-return flap for the heart of nuclear power according to claim 1 island, is characterized in that described selfsealings circle is hard seal ring.
5. the hard selfsealings circle of the oblique lobe formula of high-pressure anticorrosion non-return flap for the heart of nuclear power according to claim 1 island, is characterized in that the working pressure of the described hard selfsealings circle of the oblique lobe formula of nuclear power island heart high-pressure anticorrosion non-return flap is below 2500Lb.
CN201420341460.6U 2014-06-25 2014-06-25 The hard selfsealings circle of the oblique lobe formula of high-pressure anticorrosion non-return flap for the heart of nuclear power island Expired - Fee Related CN203940050U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420341460.6U CN203940050U (en) 2014-06-25 2014-06-25 The hard selfsealings circle of the oblique lobe formula of high-pressure anticorrosion non-return flap for the heart of nuclear power island

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420341460.6U CN203940050U (en) 2014-06-25 2014-06-25 The hard selfsealings circle of the oblique lobe formula of high-pressure anticorrosion non-return flap for the heart of nuclear power island

Publications (1)

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CN203940050U true CN203940050U (en) 2014-11-12

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CN201420341460.6U Expired - Fee Related CN203940050U (en) 2014-06-25 2014-06-25 The hard selfsealings circle of the oblique lobe formula of high-pressure anticorrosion non-return flap for the heart of nuclear power island

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107269891A (en) * 2017-06-23 2017-10-20 南通国电电站阀门股份有限公司 A kind of small-bore oblique flap-type forging welding end check-valves of extra-high voltage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107269891A (en) * 2017-06-23 2017-10-20 南通国电电站阀门股份有限公司 A kind of small-bore oblique flap-type forging welding end check-valves of extra-high voltage

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CP03 Change of name, title or address

Address after: 226557, Taoyuan West Road, Chengnan street, Rugao City, Jiangsu, Nantong province 1

Patentee after: Nantong State Electric Power Valve Co., Ltd.

Address before: 226557, Taoyuan West Road, Taoyuan Town, Nantong City, Jiangsu, Rugao 1

Patentee before: Nantong State Electric Power Valve Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141112

Termination date: 20200625