CN202927071U - Special-material adjusting angle valve for high-pressure hydrogenation reaction - Google Patents
Special-material adjusting angle valve for high-pressure hydrogenation reaction Download PDFInfo
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- CN202927071U CN202927071U CN 201220604370 CN201220604370U CN202927071U CN 202927071 U CN202927071 U CN 202927071U CN 201220604370 CN201220604370 CN 201220604370 CN 201220604370 U CN201220604370 U CN 201220604370U CN 202927071 U CN202927071 U CN 202927071U
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- valve
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- hydrogenation reaction
- valve rod
- pressure hydrogenation
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Abstract
The utility model relates to a special-material adjusting angle valve for high-pressure hydrogenation reaction. A valve seat is fixedly arranged on a valve body. A valve rod is inserted into the valve body in a sliding and sealing way. The bottom end part of the valve rod is integrally connected with a valve element. An auxiliary guide seat is arranged between the valve body and the valve seat. An anti-scour sleeve is arranged on the auxiliary guide seat. One end of the anti-scour sleeve is embedded into the auxiliary guide seat, and the other end of the anti-scour sleeve is embedded into the valve body. The valve rod is inserted into the anti-scour sleeve in a sliding way. A medium is prevented from being deposited on an inner wall, and the scour of a high-speed medium to a part in the valve is reduced; the valve rod can be prevented from being blocked by a granular medium; and the service life of the valve rod is prolonged, and the stability and the reliability of the auxiliary guide seat are ensured.
Description
Technical field
The utility model relates to a kind of adjusting angle valve, and the special material of especially a kind of high-pressure hydrogenation reaction is regulated angle valve.
Background technique
Hydrogenator is the major component of PTA device of refining unit, TA slurry and hydrogen carry out chemical reaction under the pressure of the temperature of 315 ℃, 8.5MPa in reactor, make intermediate product 4-CBA further generate PT acid, reacted high temperature, high-pressure process slurry enter down-technological process through overregulating angle valve.
We know, when pressure is that the liquid medium of P1 is when flowing through the modulating valve throttle orifice, flow velocity increases, and static pressure descends, when the pressure P 2 after the modulating valve throttle orifice is equal to or less than saturation vapour pressure Pv under the operating mode of this liquid medium place, the partially liq medium will be vaporized into gas, forms the phenomenon that gas-liquid two-phase coexists, and this phenomenon is called flash distillation.When producing flash distillation, liquid medium can produce erosion to trims such as the spool of modulating valve, valve seats, and affects the negotiability of valve.If after the generation flash distillation, P2 remains on below saturation vapour pressure Pv, but suddenly rises again after the modulating valve throttle orifice, and the bubble that flash distillation this moment produces can break and be converted into liquid state, and this process is exactly cavitation.When producing cavitation, due to pressure rise after the modulating valve throttle orifice, the bubble that produces during flash distillation explosion in succession, all concentration of energy that explosion produces are on breakdown point, form great impact force, if this explosion occurs near solid surface after the modulating valve throttle orifice, impact force can slowly be torn material surface.
The discharging of PTA device hydrogenator is regulated angle valve downstream pressure P2 less than the saturation vapour pressure Pv of medium under this operating mode, so under this operating mode, medium can not produce cavitation, only flash distillation can occur.And be the downstream pressure of valve because regulate angle valve downstream pressure P2, it is a function of downstream process and pipeline, saturation vapour pressure Pv is a function of fluid and operating temperature, so flash distillation is inevitably, must avoid or reduce as far as possible destroying by selecting suitable geometrical shape and material.
Hydrogen is not Korrosionsmedium, can not produce significantly corrosion to steel at normal temperatures and pressures.But under high temperature and high pressure condition, it has very strong penetrating power.Because hydrogen molecule is very little, the hydrogen of High Temperature High Pressure enters the lattice the inside of metal, produce very high pressure, can cause metal surface bulge or fold when serious, make metal surface bubbling (being called " hydrogen embrittlement "), cause material plasticity and strength decreased, and the cracking that therefore causes or the brittle failure of retardance.Temperature is higher, the hydrogen dividing potential drop is more outstanding, and the hydrogen embrittlement layer is just darker, and the time that the generation hydrogen embrittlement breaks is also shorter.The carbon content of metallic material is higher, and under identical temperature and pressure condition, the tendency of hydrogen embrittlement is more serious.In hydrogenator, due to being arranged, hydrogen participates in reaction, hydrogen partial enters down-technological process through overregulating angle valve with reacted high temperature, high-pressure process slurry, and in this process, hydrogen has certain " corrosion " effect (Hydrogen Brittleness Phenomena) to valve body and trim material.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of and can guarantee hydrogenator operation steady in a long-term, extension fixture repair cycle, the special material adjusting of the high-pressure hydrogenation reaction angle valve of increasing work efficiency.
The technological scheme that provides according to the utility model, the special material of described high-pressure hydrogenation reaction is regulated angle valve, comprise valve body, valve seat, valve rod and spool, be fixed with valve seat on valve body, slipper seal is plugged with valve rod in valve body, be connected with described spool in the bottom of valve rod, auxiliary guide holder is installed between valve body and valve seat, on described auxiliary guide holder, the protection against erosion sleeve pipe is installed, one end of protection against erosion sleeve pipe embeds in auxiliary guide holder, the other end of protection against erosion sleeve pipe embeds in valve body, and described valve stem slides is plugged in the protection against erosion sleeve pipe.
Be provided with two rinse mouths in the valve body outside, it is outside that one of them rinse mouth is arranged on the valve body of import right opposite, becomes 90 ° with valve body import medial axis; Another rinse mouth is arranged on the valve body neck, and perpendicular to the medial axis of valve rod, and this rinse mouth becomes 90 ° with the projection line of valve body import medial axis on the end of valve body flanged surface.
Described valve body import medial axis with the outlet medial axis become 135 °, be provided with guide plate at described valve inner, described guide plate is separately positioned on the inwall left and right sides of valve body import right opposite, becomes 90 ° of angles symmetrical.
Be connected with guide vane on described spool, the outer side wall of guide vane coordinates with the inner circle sidewall of valve seat.
Be fixed with support on valve body, be bolted with spacing adjustment piece on support, be fixed with protecting cover in spacing adjustment piece, described valve stem slides is plugged in protecting cover.
Offer the oiling interface on valve body.
Compared with the prior art the utility model has the following advantages:
1, valve body adopts 135 ° of import and export mixes, and it is streamlined that the valve inner runner more is tending towards, and substantially eliminates the valve flowing channel dead band, guarantees that media flow is unobstructed, prevents that medium from piling up at inwall, affects the valve negotiability;
2, body cavity guide plate design has reduced the high speed medium at the eddy-currents that valve inner produces, and has avoided as far as possible flash distillation, and due to the shunting action of guide plate, has reduced high speed medium washing away trim;
3, the flushing mechanism of valve body design, wherein the rinse mouth of valve body import right opposite valve body outside, can utilize the high pressure water circulatory system regularly body cavity to be rinsed by it, guarantees that body cavity and valve base cavity be not by filter medium clogging; And the rinse mouth of valve body neck can rinse the gap of valve rod and protection against erosion sleeve pipe, can guarantee that valve rod is not by the granule medium blocking;
4, design filler spacer in the middle of double-deck filler group, and design oil hole on valve body, can annotate by oil gun in the cycle at certain intervals and meet IEC standard lubricant grease, valve rod and filler are lubricated, extended the working life of filler, reduce the thrust output requirement to actuator, increased the degree of regulation of valve;
5, the Combination Design of auxiliary guide holder and protection against erosion sleeve pipe has increased the stability of valve rod, has protected valve rod, avoids the high speed medium to directly the washing away of valve rod, and has extended the working life of valve rod;
6, valve seat and auxiliary guide holder draw-in groove mounting design not only have positioning action to auxiliary guide holder, also have the anti-rotation effect, guarantee that auxiliary guide holder is reliable and stable;
7, rack beam structural design, for the spacing adjusting of aperture of regulating angle valve provides reliable support, by this structure, spacing adjustment piece can be effective and safe carries out spacing adjusting in the valve body outside to valve opening, satisfies the control requirement of valve;
8, mangetic core assembly integral design, guide vane on spool and spool, valve rod integral body process, and avoid using welding technique, have effectively improved the tensile strength of valve rod, avoided the weld joint crack to occur, the local decay resistance of also having avoided welding to cause reduces.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A-A partial sectional view of Fig. 1.
Fig. 3 is the B-B partial sectional view of Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with specific embodiment.
As shown in the figure, the special material of this high-pressure hydrogenation reaction is regulated angle valve, comprise valve body 1, valve seat 2, valve rod 3 and spool 4, be fixed with valve seat 2 on valve body 1, be plugged with valve rod 3 in the interior slipper seal of valve body 1, be connected with described spool 4 in the bottom of valve rod 3, auxiliary guide holder 5 is installed between valve body 1 and valve seat 2, on described auxiliary guide holder 5, protection against erosion sleeve pipe 6 is installed, one end of protection against erosion sleeve pipe 6 embeds in auxiliary guide holder 5, the other end of protection against erosion sleeve pipe 6 embeds in valve body 1, and described valve rod 3 sliding plugs are in protection against erosion sleeve pipe 6.
Be provided with two rinse mouths 7 in the valve body outside, one of them rinse mouth 7 is arranged on valve body 1 outside of import right opposite, becomes 90 ° with valve body 1 import medial axis; Another rinse mouth 7 is arranged on valve body 1 neck, and perpendicular to the medial axis of valve rod 3, and this rinse mouth 7 becomes 90 ° with valve body 1 projection line of import medial axis on the end of valve body flanged surface.
Described valve body 1 import medial axis becomes 135 ° with the outlet medial axis, is provided with guide plate 8 in described valve body 1 inside, and described guide plate 8 is separately positioned on the inwall left and right sides of valve body 1 import right opposite, becomes 90 ° of angles symmetrical.
Be connected with guide vane 9 on described spool 4, the outer side wall of guide vane 9 coordinates with the inner circle sidewall of valve seat 2.
Be fixed with support 10 on valve body 1, be bolted with spacing adjustment piece 11 on support 10, be fixed with protecting cover 12 in spacing adjustment piece 11, described valve rod 3 sliding plugs are in protecting cover 12; Described spacing adjustment piece 11 can be adjusted on the short transverse of support 10 up and down.The interior installation protecting cover 12 of described spacing adjustment piece 11, and fix with circlip, described protecting cover 12 adopts the teflon material, and keep the gap with valve rod 3, avoid valve rod 3 to contact with spacing adjustment piece 11, guarantee the roughness on valve rod 3 surfaces, valve rod 3 upper ends employing stop nuts, thin nut double nut are fixed, described stop nut is special, guarantees spacing validity.
Offer oiling interface 13 on valve body 1; Oiling interface 13 is set, makes grease to be injected between two groups of filler groups in valve body 1 by oiling interface 13.
Valve body 1 adopts A494 CW2M, takes full advantage of the decay resistance of Ni-Cr-Mo-W alloy in the oxidation-reduction quality medium, and good machining, welding performance, has guaranteed long-term normal use of valve body 1 in High Temperature High Pressure and Korrosionsmedium situation;
Trim adopts B348 Gr.5, take full advantage of the good usability of B348 Gr.5 under " hydrogen embrittlement " phenomenon, and process by nitriding, nitrided case depth is 0.15～0.2mm, nitriding layer hardness is HV800～1000, improve surface hardness, the wear resistance of the main trims such as spool 4, valve rod 3, guide vane 9, valve seat 2, auxiliary guide holder 5, protection against erosion sleeve pipe 6, strengthened erosion resistibility.
Two gasket seals in up and down are installed in auxiliary guide holder 5, the filler group is installed between two gasket seals; The bottom of described protection against erosion sleeve pipe 6 offsets with the gasket seal that is positioned at the top.
Working principle of the present utility model is as follows:
The high temperature that hydrogenator produces, high-pressure process slurry medium by relatively moving to the control of rate-of flow of mangetic core assembly and valve seat 2, reach the flow that satisfies technique from regulating angle valve entrance entering angle valve body 1 inner chamber, finally enter next technological process.
The utility model adopts 135 ° of angle valve valve body 1 to import and export and internal diversion plate 8 structures, eliminates the dead band of valve flowing channel, reduces the eddy-currents that the high speed medium produces at the angle valve valve inner, the washout valve internals.
The utility model adopts multidimensional runner flushing mechanism, utilize the rinse mouth 7 of angle valve valve body 1 outside, diagonal angle valve body inner chamber rinses, prevent that medium from piling up at inwall, affect the valve negotiability, utilize the rinse mouth 7 of angle valve valve body 2 necks, valve rod 3 and the gap of protection against erosion sleeve pipe 6 are rinsed, can guarantee that valve rod 3 is not by the granule medium blocking.
The utility model valve seat 2 adopts the draw-in groove mounting design with auxiliary guide holder 5, not only auxiliary guide holder 5 is had positioning action, also has the anti-rotation effect, guarantees that auxiliary guide holder 5 is reliable and stable.
The utility model is assisted the structural design of guide holder 5 and protection against erosion sleeve pipe 6, has increased the stability of valve rod 3, has protected valve rod 3, avoids high speed medium directly washing away valve rod 3.
The double-deck filler group design of the interior employing of valve body 1 of the present utility model, increase the filler spacer in the middle of the filler group, and on angle valve valve body 1 design oiling interface 13, by oiling interface 13 charging-up lubricant oil fat, valve rod 3 and filler group are lubricated, extend the working life of filler group, reduced the thrust output requirement to actuator, increased the degree of regulation of valve.
The design of the beam structure of the utility model support 10 has solved in angle valve valve body 1 outside the requirement of the spacing adjusting of valve opening, satisfies the control requirement of valve.
The utility model mangetic core assembly integral design, guide vane 9 processes with spool 4, valve rod 3 integral body, does not use welding technique, has effectively improved the tensile strength of mangetic core assembly, avoided the weld joint crack to occur, the local decay resistance of also having avoided welding to cause reduces.
The utility model angle valve valve body 1 adopts A494 CW2M, take full advantage of the decay resistance of Ni-Cr-Mo-W alloy in the oxidation-reduction quality medium, and good machining, welding performance, guaranteed long-term normal use of angle valve valve body 1 in High Temperature High Pressure and Korrosionsmedium situation.
The utility model trim adopts B348 Gr.5, take full advantage of the good usability of B348 Gr.5 under " hydrogen embrittlement " phenomenon, and process by nitriding, improve surface hardness, the wear resistance of the main trims such as mangetic core assembly, valve seat 2, auxiliary guide holder 5, protection against erosion sleeve pipe 6, strengthen erosion resistibility.
Claims (6)
1. the special material of high-pressure hydrogenation reaction is regulated angle valve, comprise valve body (1), valve seat (2), valve rod (3) and spool (4), be fixed with valve seat (2) on valve body (1), slipper seal is plugged with valve rod (3) in valve body (1), be connected with described spool (4) in the bottom of valve rod (3), it is characterized in that: between valve body (1) and valve seat (2), auxiliary guide holder (5) is installed, protection against erosion sleeve pipe (6) is installed on described auxiliary guide holder (5), one end of protection against erosion sleeve pipe (6) embeds in auxiliary guide holder (5), the other end of protection against erosion sleeve pipe (6) embeds in valve body (1), described valve rod (3) sliding plug is in protection against erosion sleeve pipe (6).
2. the special material of high-pressure hydrogenation reaction as claimed in claim 1 is regulated angle valve, it is characterized in that: be provided with two rinse mouths (7) in the valve body outside, one of them rinse mouth (7) is arranged on valve body (1) outside of import right opposite, becomes 90 ° with valve body (1) import medial axis; Another rinse mouth (7) is arranged on valve body (1) neck, and perpendicular to the medial axis of valve rod (3), and this rinse mouth (7) becomes 90 ° with the projection line of valve body (1) import medial axis on the end of valve body flanged surface.
3. the special material of high-pressure hydrogenation reaction as claimed in claim 1 or 2 is regulated angle valve, it is characterized in that: described valve body (1) import medial axis becomes 135 ° with the outlet medial axis, be provided with guide plate (8) in described valve body (1) inside, described guide plate (8) is separately positioned on the inwall left and right sides of valve body (1) import right opposite, becomes 90 ° of angles symmetrical.
4. the special material of high-pressure hydrogenation reaction as claimed in claim 1 is regulated angle valve, and it is characterized in that: be connected with guide vane (9) on described spool (4), the outer side wall of guide vane (9) coordinates with the inner circle sidewall of valve seat (2).
5. the special material of high-pressure hydrogenation reaction as claimed in claim 1 is regulated angle valve, it is characterized in that: be fixed with support (10) on valve body (1), be fixed with spacing adjustment piece (11) on support (10), be fixed with protecting cover (12) in spacing adjustment piece (11), described valve rod (3) sliding plug is in protecting cover (12).
6. the special material of high-pressure hydrogenation reaction as claimed in claim 1 is regulated angle valve, it is characterized in that: offer oiling interface (13) on valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604370 CN202927071U (en) | 2012-11-15 | 2012-11-15 | Special-material adjusting angle valve for high-pressure hydrogenation reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604370 CN202927071U (en) | 2012-11-15 | 2012-11-15 | Special-material adjusting angle valve for high-pressure hydrogenation reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202927071U true CN202927071U (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220604370 Expired - Lifetime CN202927071U (en) | 2012-11-15 | 2012-11-15 | Special-material adjusting angle valve for high-pressure hydrogenation reaction |
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| CN (1) | CN202927071U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927299A (en) * | 2012-11-15 | 2013-02-13 | 无锡智能自控工程股份有限公司 | Special material regulating angle valve for high-pressure hydrogenation reaction |
-
2012
- 2012-11-15 CN CN 201220604370 patent/CN202927071U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927299A (en) * | 2012-11-15 | 2013-02-13 | 无锡智能自控工程股份有限公司 | Special material regulating angle valve for high-pressure hydrogenation reaction |
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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: 20130508 |