CN106402416A - Throttle valve welded with pipe under extra-high pressure and having hard self-sealed forged welding end and welding method - Google Patents
Throttle valve welded with pipe under extra-high pressure and having hard self-sealed forged welding end and welding method Download PDFInfo
- Publication number
- CN106402416A CN106402416A CN201610491460.8A CN201610491460A CN106402416A CN 106402416 A CN106402416 A CN 106402416A CN 201610491460 A CN201610491460 A CN 201610491460A CN 106402416 A CN106402416 A CN 106402416A
- Authority
- CN
- China
- Prior art keywords
- welding
- self sealss
- pipe arrangement
- hard self
- valve
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Valve Housings (AREA)
Abstract
The invention relates to a throttle valve welded with a pipe under extra-high pressure and having a hard self-sealed forged welding end and a welding method. The throttle valve is characterized by comprising a 12Cr1MoV valve body, wherein a WB36 different-steel pipe is connected with an inlet of the 12Cr1MoV valve body; and a weld structure comprises an upper layer and a lower layer, the upper layer is a welding wire R31 for backing and the lower layer is a welding rod R337 for covering. The welding method is characterized by comprising the following steps of (1) roughly machining a sealing opening; (2) preparing an F316 welding rod; (3) adjusting the voltage of a welding machine to 25-30 V; (4) welding a sealing surface; (5) turning the sealing surface; (6) carrying out a liquid penetrant test of the sealing surface; (7) turning an inlet end and an outlet end; (8) drilling an inclined hole; and (9) turning grooves in the inlet end and the outlet end; and (10) grinding the sealing surface. The throttle valve and the welding method solve the technological problem of poor welding performance, master core technologies in the welding process to form process specifications with characteristics, obtain considerable economic benefits and meet use conditions.
Description
Technical field
The present invention relates to a kind of throttle, be related specifically to using special material matter make with pipe arrangement valve.
The invention further relates to a kind of self sealss welding method of throttle valve gap mouth.
The present invention also relates to the welding method that a kind of choke valve adds pipe arrangement.
Background technology
With the continuous development of China's thermoelectricity cause, the utilization of extra-high voltage fired power generating unit is more and more, and WB36 material is with it
Excellent performance important function.Valve inlet adds a pipe arrangement, plays the effect of save energy.
During 12Cr1MoV valve body and WB36 pipe arrangement dissimilar steel butt welding, it is low to there is qualification rate, postwelding crackle
And the problem that the time delay crackle frequency is higher.Solution is to do welding process performance test, is studied, and grasps welding process
In key technology, update, put the axe in the helve.
Content of the invention
The goal of the invention of the present invention is that solution 12Cr1MoV valve body is poor with WB36 pipe arrangement dissimilar steel butt welding success rate
Problem.
For completing foregoing invention purpose, the present invention is realized in：A kind of extra-high voltage adds pipe arrangement hard self sealss forging weldering
End choke valve it is characterised in that：It include 12Cr1MoV material valve body it is characterised in that：In entering of 12Cr1MoV material valve body
Mouth connects the pipe arrangement of a WB36 dissimilar steel material, and its mouth structure is：Lower floor is welding wire R31 bottoming, and upper strata is welding rod R337 capping.
Technique scheme is improved further, pressing plate is provided with the valve gap of valve body；Set between pressing plate and lid
There is hard self sealss circle；Hard self sealss circle is provided with pressure ring；Pressure ring is provided with pendant collet.Described hard self sealss circle is rustless steel
F316.
The V-shaped angle of seam of the pipe arrangement of described 12Cr1MoV material valve body and WB36 dissimilar steel material；Weldering
Liquid fills V-shape angle.
Valve body material 12Cr1MoV, piping material WB36, welding wire R31 bottoming, welding rod R337 capping, four kinds of materials are welded into
Integrally.
Valve adds that pipe arrangement effect is：Reduce coal consumption, improve the thermal efficiency, make unit operation reliable, be continuously increased, improve warp
Ji benefit.
Pressing plate is provided with the valve gap of valve body；It is provided with hard self sealss circle between pressing plate and lid；Hard self sealss circle sets
There is pressure ring；Pressure ring is provided with pendant collet.
Second goal of the invention of the present invention is：The welding method of a kind of valve body and pipe arrangement is provided, solves conventional valve body material
12Cr1MoV and the not high problem of piping material WB36 success rate.
For solving above-mentioned technical problem, the present invention is realized in：（1）Confirm valve body material 12Cr1MoV, pipe arrangement material
Material WB36；（2）From welding wire R31 bottoming；（3）Using welding rod R337 capping,（4）Two ends imported and exported by car；（5）Rat holing；（6）Car
Import and export two ends groove；（7）Grinding seal surface.
Just solved using technique scheme, in the process of 12Cr1MoV valve body and WB36 pipe arrangement dissimilar steel butt welding
In, exist that qualification rate is low, postwelding crackle and the higher problem of the time delay crackle frequency.
3rd goal of the invention of the present invention be：Solve the problems, such as that the seal friction power between valve gap and valve is big.
For solving above-mentioned technical problem, the solution of the present invention is realized in：One kind is used for welding extra-high voltage and adds pipe arrangement
Hard self sealss forge the hard self sealss circle of welding end choke valve method it is characterised in that：（1）Seal roughing；（2）Prepare
F316 welding rod；（3）By welding machine Voltage Cortrol to 25-30V；（4）Welded seal face；（5）Car sealing surface；（6）Sealing face colouring is visited
Wound；（7）Two ends imported and exported by car；（8）Rat holing；（9）Two ends groove imported and exported by car；（10）Grinding seal surface.In welding, by valve
Door operating pressure is set to 380V.
This programme solves valve sealing face zero seepage, improves flap and the anti-cavitation of valve seat and the ability of antiscour, carries
The overall performance of high valve and use.
Brief description
Fig. 1 is the product structure figure of the present invention.
Specific embodiment
As illustrated, a kind of extra-high voltage adds pipe arrangement hard self sealss forging welding end choke valve, it includes 12Cr1MoV material valve
Body 1, valve body is included into oral fluid mouth and valve gap 5 again；In order to reduce coal consumption, improve the thermal efficiency, make unit operation reliable, constantly increase
Plus, increase economic efficiency；Connect the pipe arrangement 2 of a WB36 dissimilar steel material in the import of 12Cr1MoV material valve body, solder technology is adopted
With：（1）Confirm valve body material 12Cr1MoV, piping material WB36；（2）From welding wire R31 bottoming；（3）Using welding rod R337 lid
Face,（4）Two ends imported and exported by car；（5）Rat holing；（6）Two ends groove imported and exported by car；（7）Grinding seal surface., its mouth structure is
End form becomes：Lower floor is welding wire R31 bottoming, and upper strata is welding rod R337 capping.12Cr1MoV material valve body and WB36 Dissimilar Steels
The V-shaped angle of seam 3 of the pipe arrangement of matter；Welding fluid fills V-shape angle 3.
For solving valve sealing face zero seepage, improve flap and the anti-cavitation of valve seat and the ability of antiscour, improve valve
The overall performance of door and use state；The valve gap 5 of valve body is provided with pressing plate；It is provided with hard self sealss circle 4 between pressing plate and lid,
6；It is provided with pressure ring 7 in hard self sealss circle 4,6；Pressure ring is provided with pendant collet 8, is provided with backing plate 9 on pressure ring, is finally sealed with spiral shell
Tightly；Described hard self sealss circle is rustless steel F316.Firmly self-packing welding method is：（1）Seal roughing；（2）Prepare
F316 welding rod；（3）By welding machine Voltage Cortrol to 25-30V；（4）Welded seal face；（5）Car sealing surface；（6）Sealing face colouring is visited
Wound；（7）Two ends imported and exported by car；（8）Rat holing；（9）Two ends groove imported and exported by car；（10）Grinding seal surface.Self sealss circle is by former
The soft seal (middle head gasket) coming, is now firmly connected in hard sealing ring, and is F316 rustless steel.In welding, using valve work
Make pressure to increase：Former below 210V, now for 380V.Friction between valve seal pair is little, substantially increases the use longevity of valve
Life.
Valve body 12Cr1MoV import and pipe arrangement WB36 carry out dissimilar steel butt welding, solve the poor technique of welding performance and ask
Topic, grasps the core technology in welding process, forms the technological specification with oneself characteristic, obtains considerable economic benefit, full
Sufficient applying working condition.
Claims (7)
1. a kind of extra-high voltage add pipe arrangement hard self sealss forging welding end choke valve it is characterised in that：It includes 12Cr1MoV material valve
Body it is characterised in that：Connect the pipe arrangement of a WB36 dissimilar steel material in the import of 12Cr1MoV material valve body, its mouth structure is：
Lower floor is welding wire R31 bottoming, and upper strata is welding rod R337 capping.
2. a kind of extra-high voltage according to claim 1 add pipe arrangement hard self sealss forging welding end choke valve it is characterised in that：Institute
The V-shaped angle of seam of the pipe arrangement of the 12Cr1MoV material valve body stated and WB36 dissimilar steel material；Welding fluid fills V-shape
Angle.
3. a kind of extra-high voltage according to claim 1 add pipe arrangement hard self sealss forging welding end choke valve it is characterised in that：?
The valve gap of valve body is provided with pressing plate；Pressing plate is provided with hard self sealss circle with lid；Hard self sealss circle is provided with pressure ring；On pressure ring
It is provided with pendant collet.
4. a kind of extra-high voltage according to claim 2 add pipe arrangement hard self sealss forging welding end choke valve it is characterised in that：Institute
The hard self sealss circle stated is rustless steel F316.
5. a kind of add, for welding extra-high voltage, the method that choke valve and the pipe arrangement of welding end choke valve are forged in the hard self sealss of pipe arrangement, it is special
Levy and be：（1）Confirm valve body material 12Cr1MoV, piping material WB36；（2）From welding wire R31 bottoming；（3）Using welding rod
R337 capping,（4）Two ends imported and exported by car；（5）Rat holing；（6）Two ends groove imported and exported by car；（7）Grinding seal surface.
6. a kind of for for weld extra-high voltage add the hard self sealss of pipe arrangement forge welding end choke valve hard self sealss circle method, its
It is characterised by：（1）Seal roughing；（2）Prepare F316 welding rod；（3）By welding machine Voltage Cortrol to 25-30V；（4）Welding is close
Front cover；（5）Car sealing surface；（6）Sealing surface dye penetrant inspection；（7）Two ends imported and exported by car；（8）Rat holing；（9）Two ends imported and exported by car
Groove；（10）Grinding seal surface.
7. welding extra-high voltage according to claim 6 adds the hard self sealss circle of pipe arrangement hard self sealss forging welding end choke valve
Method it is characterised in that：In welding, valve working pressure is set to 380V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610491460.8A CN106402416B (en) | 2016-06-29 | 2016-06-29 | Extra-high voltage adds the hard self sealss forging welding end throttle valve of piping and welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610491460.8A CN106402416B (en) | 2016-06-29 | 2016-06-29 | Extra-high voltage adds the hard self sealss forging welding end throttle valve of piping and welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106402416A true CN106402416A (en) | 2017-02-15 |
| CN106402416B CN106402416B (en) | 2018-11-13 |
Family
ID=58006846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610491460.8A Active CN106402416B (en) | 2016-06-29 | 2016-06-29 | Extra-high voltage adds the hard self sealss forging welding end throttle valve of piping and welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402416B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109175756A (en) * | 2018-09-19 | 2019-01-11 | 南通国电电站阀门股份有限公司 | The technique of F92 valve body and F11 piping dissimilar steel butt welding |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3987529A (en) * | 1971-11-01 | 1976-10-26 | Asahi Kasei Kogyo Kabushiki Kaisha | Valve and method for manufacturing the same |
| CN101890562A (en) * | 2010-07-26 | 2010-11-24 | 上海电气核电设备有限公司 | Nuclear island primary device connection tube safe end dissimilar metal welding technology |
| CN204647375U (en) * | 2015-05-13 | 2015-09-16 | 南通国电电站阀门有限公司 | Nuclear power island heart high pressure adds the hard self-sealing gate valve of pipe arrangement pressure-relief type |
| CN205841810U (en) * | 2016-06-29 | 2016-12-28 | 南通国电电站阀门股份有限公司 | Extra-high voltage adds pipe arrangement hard self sealss forging welding end choke valve |
-
2016
- 2016-06-29 CN CN201610491460.8A patent/CN106402416B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3987529A (en) * | 1971-11-01 | 1976-10-26 | Asahi Kasei Kogyo Kabushiki Kaisha | Valve and method for manufacturing the same |
| CN101890562A (en) * | 2010-07-26 | 2010-11-24 | 上海电气核电设备有限公司 | Nuclear island primary device connection tube safe end dissimilar metal welding technology |
| CN204647375U (en) * | 2015-05-13 | 2015-09-16 | 南通国电电站阀门有限公司 | Nuclear power island heart high pressure adds the hard self-sealing gate valve of pipe arrangement pressure-relief type |
| CN205841810U (en) * | 2016-06-29 | 2016-12-28 | 南通国电电站阀门股份有限公司 | Extra-high voltage adds pipe arrangement hard self sealss forging welding end choke valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109175756A (en) * | 2018-09-19 | 2019-01-11 | 南通国电电站阀门股份有限公司 | The technique of F92 valve body and F11 piping dissimilar steel butt welding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106402416B (en) | 2018-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103821511B (en) | A kind of development machine high-pressure water jet auxiliary cutterhead | |
| CN112922765B (en) | Manufacturing process method of split runner of large-scale impulse turbine | |
| CN106402416A (en) | Throttle valve welded with pipe under extra-high pressure and having hard self-sealed forged welding end and welding method | |
| CN204647375U (en) | Nuclear power island heart high pressure adds the hard self-sealing gate valve of pipe arrangement pressure-relief type | |
| CN205841810U (en) | Extra-high voltage adds pipe arrangement hard self sealss forging welding end choke valve | |
| CN101176961A (en) | Method for preparing cuprum aluminum complex structure metallic can | |
| CN105545214B (en) | Major-minor bottom spray type laser welding diamond bit and its manufacture method | |
| CN104696585A (en) | Multi-protection corrugated pipe stop valve for chlorine | |
| CN209494786U (en) | A kind of New hammer oil cylinder sealing structure | |
| CN103821949A (en) | Cascading valve clack type adjusting valve | |
| CN203052060U (en) | Cooling water pipe and cooling system with cooling water pipe | |
| CN207246449U (en) | Seamless stainless steel pipe large caliber hard sealed butterfly valve valve seat | |
| CN1101906C (en) | Gate valve | |
| CN207648304U (en) | A kind of high pressure W.N flange | |
| CN201034184Y (en) | Standing ball valve seat structure | |
| CN211588898U (en) | Low controllable friction stir welding of preforming and shoulder pair of flowing welding set | |
| CN202763304U (en) | Transition piece of polycrystalline diamond compound sheet and drill bit matrix | |
| CN206299471U (en) | A kind of vacuum high-temperature soldering piston | |
| CN207212304U (en) | A kind of big orifice wellhead hydraulic annular is self-styled | |
| CN105179717A (en) | Anti-scouring and anti-corrosion high-pressure throttling valve and producing method of combined valve element | |
| CN204493872U (en) | The chlorine bellows stop valve of multiple protective | |
| CN203214934U (en) | High-pressure valve ball | |
| CN203847733U (en) | High-pressure-resistant energy-saving gate valve with pipes | |
| CN217255818U (en) | Compound pipe bush water pressure frock | |
| CN102537545A (en) | Structure and method for connecting metal pipe fitting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |