CN201802904U - Improved ball valve - Google Patents
Improved ball valve Download PDFInfo
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- CN201802904U CN201802904U CN2010205248852U CN201020524885U CN201802904U CN 201802904 U CN201802904 U CN 201802904U CN 2010205248852 U CN2010205248852 U CN 2010205248852U CN 201020524885 U CN201020524885 U CN 201020524885U CN 201802904 U CN201802904 U CN 201802904U
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- valve body
- ball valve
- ball
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Abstract
The utility model relates to an improved ball valve. A left valve body and a right valve body are in all-welded forged steel structures; a stuffing box is welded onto the valve bodies; a stop pin mounted on the stuffing box matches with an annular groove surface of a valve stem; a ball is in a fixed structure; the surfaces of the ball and a valve seat are coated with carbon tungsten alloy by supersonic spraying; the hardness of a sealing surface reaches HV900-1200; and the thickness of coating is larger than or equal to 25 micrometers. The improved ball valve has the advantages that the wall thickness of an all-welded forged part of the ball valve can be extremely small under the condition of the same strength, the weight of the valve can be reduced by a quarter while resistance to bending and squeezing of a pipeline is enhanced, the size of appearance is decreased, the structure is compact, mounting space is saved, internal curves of the welded structures of the valve bodies are smooth, pipeline connection is smooth and has no dead corners, medium mobility is fine, the surfaces of the ball and the valve seat coated with carbon tungsten alloy by supersonic spraying and are abrasion-resistant and corrosion-resistant, the strength between an overlaying surface and a base meets the requirements of metallurgical bonding, and the improved ball valve has enough strength to bear impact of high-pressure media.
Description
[technical field]
The utility model relates to the ball valve technical field, specifically a kind of modified model ball valve.
[background technique]
At present, the valve body of existing ball valve is a split-type structural, and the wall thickness of the ball valve forging of this structure ball valve is done very thickly; valve weight is very heavy, vulnerable to pipe bending and extruding, and also volume is big, complex structure; installing space is big, regular meeting's occur leaking outside hidden danger of passage.The valve inner curve is not smooth, and with the smooth dead angle that is connected with of pipeline, air flowability is poor.Simultaneously, because split-type structural, the sealability effect is also very poor.
In addition, existing ball valve spheroid, valve base surface bear the brute force of high pressure throttling medium and wash away, and are easy to wearing and tearing, corrosion.Washed away pit by medium rapidly if employing soft sealing structure, the soft sealing material part of valve seat are exposed in the medium, make valve opening once the back sealability promptly lost efficacy.
[summary of the invention]
The purpose of this utility model is exactly will solve above-mentioned deficiency and a kind of modified model ball valve is provided.
Design a kind of modified model ball valve for achieving the above object, comprise left valve barrel, right valve barrel, valve seat, valve rod, spheroid and spring, in the described valve seat supporting spring is installed, it is characterized in that: described left and right valve body adopts full welding forged steel structure, be welded to connect stuffing box on the described valve body, backing pin is installed on the stuffing box, described backing pin cooperates with the annular groove face of valve rod, described spheroid is a stationary structure, described spheroid, valve base surface adopt the supersonic spray coating diamondite, sealing surface hardness reaches HV900-1200, coating thickness 〉=25 μ m.
Gas shielded arc welding or automatic submerged-arc welding machine welding are adopted in the welding of described valve body.
Described stem surface is carried out the chemical nickel plating processing, thickness of coating 〉=50 μ m, and hardness is HV650～750.
All there is the greasing hole at described valve stem seal and valve base sealing place and grease pouring valve are installed, and the seal gease of described grease pouring valve pushes to adopt with No. 7903 special-purpose lubrication and seal fat.
Pollutant exhaust hole is arranged at described valve body bottom, and ball valve and blowdown valve are installed on the pollutant exhaust hole successively, and described valve near valve body is a ball valve, and end is provided with blowdown valve.
Between described valve body and the accessory body, between loam cake and the valve body, be equipped with the fire prevention pad between lower cover and the valve body, the fire prevention expanded graphite is arranged on the described valve rod, be provided with the metal to metal seal part between described spheroid and valve seat supporting.
The utility model beneficial effect: the wall thickness of full side welded ball valve forging can be done very thinly under the identical situation of intensity.Valve weight can alleviate 1/4th, and the resistivity of pipe bending and extruding is strengthened; Owing to cancelled valve flange and bolt.Boundary dimension reduces, and compact structure is saved installing space.And eliminated the potential passage that leaks outside.In addition, valve body welded structure inner curve smoothness.Kept and smooth connection of pipeline do not have the dead angle, air flowability is good.Simultaneously, because weld seam is positioned at the valve body midline position, to greatest extent away from sealing surface of seat, thereby the influence that welding can be brought valve seat is reduced to minimum.Adopt the supersonic spray coating diamondite on spheroid, the valve seat, sealing surface hardness reaches HV900-1200, and is wear-resistant, corrosion-resistant.Intensity between overlay cladding and the matrix reaches metallurgy combination, enough intensity is arranged to bear the impact of high-pressure medium.
[description of drawings]
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the A-A sectional drawing of Fig. 1;
Fig. 4 is the I partial enlarged drawing of Fig. 1;
Fig. 5 is the II partial enlarged drawing of Fig. 1;
Among the figure: 1 is left valve barrel, 2 is spring, 3 are O shape circle, 4 is valve seat, 5 is introduction valve, 6 is valve rod, 7 is last lining, 8 is stuffing box, 9 are O shape circle, 10 is sealing gasket, 11 is screw, 12 is key, 13 is pressing plate, 14 is handle head, 15 is steel pipe, 16 is right spherical shell, 17 is screw, 18 is plug screw, 19 is backing pin, 20 is introduction valve, 21 is petcock, 22 is plug screw, 23 is spring, 24 is steel ball, 25 for regulating plug screw, 26 is lower shaft, 27 is friction pad, 28 is casing running, 29 is sealing gasket, 30 are following lining, 31 spheroids, 32 are O shape circle.
[embodiment]
Further specify below below in conjunction with accompanying drawing the utility model being done:
Valve body: valve body is left and right sides valve body welding forged steel structure, and the welding of valve body is carried out in strict accordance with welding procedure, adopts the welding of gas shielded arc welding or automatic submerged-arc welding machine, and all weld seams all pass through 100%UT and upcheck.
Stuffing box: stuffing box is welded on the valve body, and leakage point is eliminated, and will prevent the quick-fried device of valve rod spray to be installed on the gland simultaneously, and being convenient to the dismounting of valve rod parts and installing also can online (when not influencing valve working) replacing valve rod graphite grazing.
Spheroid: forge carbon steel or stainless steel spheroid, stationary structure.Material adopts A105, A350LF2, A182F304, and the supersonic spray coating diamondite is adopted on the surface, and sealing surface hardness reaches HV900-1200, coating thickness 〉=25 μ m.Spheroid has enough rigidity and intensity, the bulk strength of assurance valve and safe in utilization.Spheroid and last lower valve rod joint are equipped with self oiling bearing, the power of reducing friction, and when valve closing, the load that fluid pressure difference produces is delivered on the valve body by valve rod, self oiling bearing and bearing.
Valve rod: adopt explosion-proof spray design by ASME B16.34 standard, material adopts AISI4140, A182F304, and for improving stem surface hardness, carry out chemical nickel plating and handle, thickness of coating 〉=50 μ m, hardness is HV650～750.
Valve stem seal: first heavily is: " O " RunddichtringO (the explosion-proof fluorine rubber of VITON-AED), second heavily is expanded graphite (fire proof seal ring), can also can guarantee the sealing of valve rod under fire condition by online replacing valve rod second resealing.
Valve seat construction: the valve seat bearing ring is A105, A350LF2, A182F304 forging, and the supersonic spray coating diamondite is adopted on the surface, and sealing surface hardness reaches HV900-1200, coating thickness 〉=25 μ m.Can select single piston, double-piston, single double-piston form according to customer requirement.
Pressure releasing: adopt single piston effect valve seat construction, the pressure of valve lumen can discharge to the downstream side in pipeline.Adopt double-piston effect valve seat construction, the pressure of valve lumen can not discharge to valve two in pipeline, must discharge to the pipeline outside by the relief valve that is installed on the valve body.On the ball valve body of every double-piston effect valve seat relief valve is arranged all, the superpressure of valve body lumen is released automatically by safety valve.Adopt single double-piston effect valve seat construction, the pressure of valve lumen can discharge to upstream side in pipeline.
The spring pretension: in the valve seat supporting spring is installed, material adopts INCONEL X-750.During low-pressure state, reach low pressure seal by the spring pretension, when pressure raises, utilize medium self pressure and realize high pressure sealing automatically, sealability is very reliable.
Urgent sealing: valve design has urgent sealing system, and all there is the greasing hole at valve stem seal and valve base sealing place and grease pouring valve is installed.When valve rod and valve base sealing damage occurs and produce when leaking, by auxiliary greasing system, inject seal gease to sealing surface, play temporary transient auxiliary seal and reach secondary seal.Each grease pouring valve is equipped with safety check, prevents that seal gease is excessive under the effect of valve cavity pressure medium, and the grease pouring valve end is the rapid pipe joint that grease gun connects.
Seal gease recommends to adopt No. 7903 special-purpose lubrication and seal fat.Sealing fat is that inorganic thickening agent multiviscosisty artificial oil adds antioxygen, anticorrosion etc.Have media such as good anti-kerosene, gasoline, lubricant oil, water, ethanol, liquefied petroleum gas (LPG), in medium, do not dissolve, do not disperse and have a lubricity.
Twoly block and release (DBB): when valve was in the closed position, the medium of pipe ends was cut off fully.The medium of valve body lumen can be by blowdown and evacuating device discharging.
Drainage device: in the valve body bottom pollutant exhaust hole is arranged, ball valve and blowdown valve are installed on the pollutant exhaust hole.Valve near valve body is a ball valve, and end is provided with blowdown valve.When valve closing, open the dirt that blowdown valve can be got rid of the valve body lumen.
Fire prevention design: all carried out the fire prevention design by API 607, API 6FA.Between valve body and the accessory body, between loam cake and the valve body, between lower cover and the valve body fire prevention pad is arranged all; Valve rod has the fire prevention expanded graphite; Between spheroid and valve seat supporting the metal to metal seal part is arranged.
Antistatic design:, be breakneck for inflammable, the explosive medium of conveying because the static of the friction between metal and nonmetal (plastics, the rubber) produces spark.Between the metal parts that is cut off by plastics/rubber (valve body, spheroid, accessory body, valve seat supporting, valve rod), adopt stainless steel spring and steel ball to guarantee that it communicates with pipeline.By the earthed system of pipeline, fricative build-up of electrostatic charges guarantees the safe operation of pipeline and device when preventing valve switch, meets the regulation of API 6D fully.
Explosion-proof spray design: the quick-fried structural drawing of blowout prevention is shown in left figure, and backing pin is installed on the stuffing box, cooperates with the stem ring groove face, can prevent effectively that valve rod from blowing out.
Material: the selection of valve components material meets the requirement of API 6D, ASTM, sees product drawing for details.
The check of product and test: factory inspection is the important component part of control of product quality.Shanghai high and middle pressure valve limited company from raw material and components and parts advance factory, component processing, assembling, test and dispatch from the factory etc. and all strictly test and record by file, and with this part of quality document during as delivery.The test of valve is undertaken by API6D, and check and test event see " Q/SGJ0407-2008API 6D valve products testing regulations " for details.Requirement of client is satisfied in all check and tests.
Anticorrosion and the protection of valve: when the valve body material was A105, A350LF2 carbon steel, coating was carried out according to the requirement of the 8th section of technical specification book.When the valve body material was the A182F304 stainless steel, forging had carried out pickling, passivation and solid molten the processing, and valve body is not painted.Before the japanning of handle and worm and gear by standard thoroughly clean, scrubbing, oil removing, rust cleaning, and paint by " Q/SGJ0205-2008 valve products painting specification ".
Nameplate: nameplate meets the regulation of API 6D appendix E, and nameplate is that stainless steel is fixed on the valve body.Literal on the nameplate is a Chinese, adopts special device to print, and long-term maintenance is clear readable under the condition at the scene.Literal on the nameplate is a Chinese, and unit is an international unit SI system.
Packing and transportation: all products are all packed respectively by name of station, model specification, carry out " Q/SGJ0207-2008 package handling standard ".All products all transport under opening state, and there is stifle at the flange two ends.Spare part and instrument are packed separately and sign are arranged.
Maintenance and maintenance: All-welded Forged Steel Ball Valve is non-maintaining structure, and valve rod second resealing (expanded graphite) is replaceable.The leakage that valve rod and valve base sealing produce because of damage can be carried out secondary by the filling seal gease and promptly seal.
Claims (6)
1. modified model ball valve, comprise left valve barrel, right valve barrel, valve seat, valve rod, spheroid and spring, in the described valve seat supporting spring is installed, it is characterized in that: described left and right valve body adopts full welding forged steel structure, be welded to connect stuffing box on the described valve body, backing pin is installed on the stuffing box, described backing pin cooperates with the annular groove face of valve rod, described spheroid is a stationary structure, described spheroid, valve base surface adopt the supersonic spray coating diamondite, sealing surface hardness reaches HV900-1200, coating thickness 〉=25 μ m.
2. a kind of modified model ball valve as claimed in claim 1 is characterized in that: gas shielded arc welding or automatic submerged-arc welding machine welding are adopted in the welding of described valve body.
3. a kind of modified model ball valve as claimed in claim 1 is characterized in that: described stem surface is carried out the chemical nickel plating processing, thickness of coating 〉=50 μ m, and hardness is HV650～750.
4. a kind of modified model ball valve as claimed in claim 1 is characterized in that: all there is the greasing hole at described valve stem seal and valve base sealing place and grease pouring valve are installed, and the seal gease of described grease pouring valve pushes to adopt with No. 7903 special-purpose lubrication and seal fat.
5. a kind of modified model ball valve as claimed in claim 1 is characterized in that: pollutant exhaust hole is arranged at described valve body bottom, and ball valve and blowdown valve are installed on the pollutant exhaust hole successively, and described valve near valve body is a ball valve, and end is provided with blowdown valve.
6. a kind of modified model ball valve as claimed in claim 1, it is characterized in that: between described valve body and the accessory body, between loam cake and the valve body, be equipped with the fire prevention pad between lower cover and the valve body, the fire prevention expanded graphite is arranged on the described valve rod, be provided with the metal to metal seal part between described spheroid and valve seat supporting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205248852U CN201802904U (en) | 2010-09-10 | 2010-09-10 | Improved ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205248852U CN201802904U (en) | 2010-09-10 | 2010-09-10 | Improved ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802904U true CN201802904U (en) | 2011-04-20 |
Family
ID=43872403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205248852U Expired - Lifetime CN201802904U (en) | 2010-09-10 | 2010-09-10 | Improved ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802904U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936407A (en) * | 2010-09-10 | 2011-01-05 | 上海高中压阀门股份有限公司 | Improved ball valve |
| CN102212776A (en) * | 2011-05-24 | 2011-10-12 | 江苏金石油气井口科技有限公司 | Method for spraying wolfram carbide alloy on seal surface of valve plate (seat) at supersonic speed |
| CN102384312A (en) * | 2011-10-26 | 2012-03-21 | 广东明珠流体机械有限公司 | Seal valve with no-wear helical surface |
| CN102720856A (en) * | 2012-06-27 | 2012-10-10 | 四川凯茨阀门制造有限公司 | Spray valve |
| CN102853143A (en) * | 2012-09-26 | 2013-01-02 | 四川精控阀门制造有限公司 | All-welded ball valve and welding method of all-welded ball valve |
| CN103527806A (en) * | 2013-10-09 | 2014-01-22 | 浙江力诺流体控制科技股份有限公司 | Integral type jacket heat-preservation ball valve |
| CN106917878A (en) * | 2017-03-20 | 2017-07-04 | 航天长征化学工程股份有限公司 | Eccentric rotary valve |
-
2010
- 2010-09-10 CN CN2010205248852U patent/CN201802904U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936407A (en) * | 2010-09-10 | 2011-01-05 | 上海高中压阀门股份有限公司 | Improved ball valve |
| CN101936407B (en) * | 2010-09-10 | 2012-12-12 | 上海高中压阀门股份有限公司 | Improved ball valve |
| CN102212776A (en) * | 2011-05-24 | 2011-10-12 | 江苏金石油气井口科技有限公司 | Method for spraying wolfram carbide alloy on seal surface of valve plate (seat) at supersonic speed |
| CN102384312A (en) * | 2011-10-26 | 2012-03-21 | 广东明珠流体机械有限公司 | Seal valve with no-wear helical surface |
| CN102720856A (en) * | 2012-06-27 | 2012-10-10 | 四川凯茨阀门制造有限公司 | Spray valve |
| CN102853143A (en) * | 2012-09-26 | 2013-01-02 | 四川精控阀门制造有限公司 | All-welded ball valve and welding method of all-welded ball valve |
| CN103527806A (en) * | 2013-10-09 | 2014-01-22 | 浙江力诺流体控制科技股份有限公司 | Integral type jacket heat-preservation ball valve |
| CN106917878A (en) * | 2017-03-20 | 2017-07-04 | 航天长征化学工程股份有限公司 | Eccentric rotary valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |