CN203421193U - Military industry extra-high pressure oxygen valve - Google Patents
Military industry extra-high pressure oxygen valve Download PDFInfo
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- CN203421193U CN203421193U CN201320479725.4U CN201320479725U CN203421193U CN 203421193 U CN203421193 U CN 203421193U CN 201320479725 U CN201320479725 U CN 201320479725U CN 203421193 U CN203421193 U CN 203421193U
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- valve
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- high pressure
- high voltage
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Abstract
A military industry extra-high pressure oxygen valve comprises a sealing structure between a valve body carrier and a valve clack, wherein the sealing structure between the valve body carrier and the valve clack is an angle difference sealing pair having the angle difference ranging from 2 degrees to 5 degrees; meanwhile, a valve rod seal is a composite filler sealing structure. According to the military industry extra-high pressure oxygen valve, the angle difference sealing pair is adopted, two matched sealing surfaces form an extremely narrow line seal annular belt when making contact with each other, large sealing specific pressure can be formed by exerting very small sealing force, seal performance is good, and the requirement for driving force is relatively low. Accordingly, the military industry extra-high pressure oxygen valve completely meets harsh and complex work conditions of extra-high pressure industrial grade pure oxygen in the spaceflight field, and the purpose of safe use is achieved.
Description
Technical field
The utility model belongs to space industry extremely high pressure oxygen valve manufacturing technology field, is specifically related to a kind ofly can reliably use the oxygen valve of using under, complex working condition harsh at extremely high pressure technical grade purity oxygen.
Background technique
At metallurgical system oxygen valve, use field, oxygen valve pressure is not generally higher than PN40, and inside nominal diameter is not generally higher than DN500; At Coal Chemical Industry system oxygen valve, use field, oxygen valve pressure is not generally higher than CL1500 or PN250, and inside nominal diameter is not generally higher than DN300.And at space industry the particularity due to purposes, to the pressure of valve and bore, require all high.Pressure is generally not less than CL2500 or PN420 at present, and latus rectum is DN10～DN500.Due to the gas of space industry oxygen valve, at extremely high pressure, (" extremely high pressure " word is the standard terminology of European oxygen industry, normal finger pressure power surpasses the oxygen of 11MPa) under present and be different from normal temperature, the fluid characteristics of middle pressure and high risk, once have extremely strong permeability and leak the danger that Fire explosion will occur, therefore carrying out efficient sealed is one of focus of paying close attention to of this class valve.The filler of normal domestic oxygen valve generally adopts without oily Expanded graphite or PTFE.Valve clack sealing surface adopts plane, and sealing surface is parallel to each other.This structure for the normal temperature oxygen valve effect of mesolow still can, but can not meet the requirement of sealing completely for space industry " extremely high pressure " oxygen valve effect.This is because the desired sealing force of space industry " extremely high pressure " oxygen valve is large, air-flow easily produces the special fluid phenomenons such as eddy current, turbulent flow and " adiabatic compression ", so except requiring material to have high flame retarding, also necessarily require to there is high sealability.And plane sealing surface is due to the restriction of grinding precision, the extremely high pressure of commute infiltration and the oxygen seal weak effect of flow velocity.
Model utility content
The oxygen valve that the utility model provides a kind of reliable use to use under space industry extremely high pressure technical grade purity oxygen harshness, complex working condition, sealability is reliable, Safety performance good.
The technological scheme that the utility model is taked is: a kind of military project extra-high voltage oxygen valve, comprise the sealing configuration between valve body and valve seat and flap, and the sealing configuration between described valve body and valve seat and flap is the declinate sealing pair with 2 ° ~ 5 ° of differential seat angles; Valve stem seal is composite filling sealing configuration simultaneously.
The tapering of described valve body and valve seat sealing surface is 42 °～50 °, and the tapering of valve clack sealing surface is 40 °～45 °.
Described valve body and valve seat sealing surface and valve clack sealing surface have difference of hardness.
Described composite filling sealing configuration is: middle is filler spacer ring, and this filler spacer ring is sequentially added and forms by soft packing and metallic stuffing up and down.
Described filler spacer ring middle part is provided with conductive steel ball and spring; This conduction steel ball contacts with valve rod.
Described filler spacer ring upper and lower end is provided with spring energy-storage seal ring.
The declinate sealing pair that the utility model adopts, forms an extremely narrow linear sealing endless belt while making the sealing surface contact of two pairings, acts on very little sealing force and will form very large seal pressure, and sealability is good, lower to the requirement of driving force.Thereby make the utility model meet harsh, the complicated operating mode of space industry extremely high pressure technical grade purity oxygen completely, reach the object of safe handling.
The oxygen valve of the present utility model different drive unit that can change the outfit: for example; Electronic, Pneumatic actuator can be realized long-distance intelligent control.
Accompanying drawing explanation
Fig. 1 is overall structure figure of the present utility model;
Fig. 2 is valve seal seat figure in Fig. 1;
Fig. 3 is flap figure in Fig. 1;
Fig. 4 is composite filling figure in Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
See figures.1.and.2,3, a kind of military project extra-high voltage oxygen valve, comprises the sealing configuration between valve body and valve seat and flap, the sealing configuration between described valve body and valve seat and flap is the declinate sealing pair with 2 ° ~ 5 ° of differential seat angles; Declinate sealing pair is different from the sealing pair of common valve.This structure is to design based on sealing effect and considering of two aspects of sealing force of minimizing.Sealing pair is comprised of two angled sealing surfaces, and valve body sealing surface 1-1 is different with the angle of valve clack sealing surface 2-1, always has the differential seat angle of 2 °, 3 °, 4 ° or 5 ° between two sealing surfaces.Sealing pair material fires high MONEL alloy according to international oxygen valve standard application resistance to be made, the sealing surface of two pairings can form an extremely narrow linear sealing endless belt while contacting, act on very little sealing force and will form very large seal pressure, for avoiding seal failure, between sealing surface, there is difference of hardness, hardness by material determines, difference of hardness is controlled at 50 ~ 65HB, and the hardness of the hardness ratio valve seal seat of flap is high conventionally.This structure makes the sealing effect of oxygen valve outstanding.From reducing the angle of valve rod active force, consider in addition, the tapering of general valve body sealing surface 1-1 is 40 °, 41 °, 42 ° 43 °, 44 ° or 45 °, the tapering of valve clack sealing surface 2-1 is 42 °, 43 °, 44 °, 45 °, 46 °, 47 °, 48 °, 49 ° or 50 °, the lifting surface area that such cooperation can make declinate sealing pair form diminishes, the sealing force applying while reducing medium low in and high out.
The utility model has experienced the check of production practices.After Product Assembly according to the regulation of API598 test stone, according to the indication water of valve body flow arrows, seal and exert pressure, at valve export end, placing a measuring cup measures, in scheduled time, the medium volume measure leaking and and other the sealing effect of structure formation contrast, comparing result is as following table:
| Sealing configuration | Leak-down rate |
| Sphere and 60 ° of tapered sealings | 60ml/min |
| 60 ° of cones and 60 ° of tapered sealings | 45 ml/min |
| Declinate sealing pair | Zero leakage |
With reference to Fig. 1 and Fig. 4, described composite filling sealing configuration mainly comprises soft packing 8-6, metallic stuffing 8-5, spring energy-storage seal ring 8-1, filler spacer ring 8-8, conduction steel ball 8-2, spring 8-3, according to filler spacer ring, 8-8 is placed in the middle, combines up and down by the order of upper Packing seat 8-7, soft packing 8-6, metallic stuffing 8-5, soft packing 8-6, lower Packing seat 8-4.Soft packing 8-6, metallic stuffing 8-5, soft packing 8-6 in the middle of being wherein placed in arrange the number of plies on demand.Soft packing is made by PTFE interpolation copper powder, and metallic stuffing selects the softer Cuprum alloy of quality to make, for example, and annealing red copper, silicon brass, brass etc.Filler spacer ring can make the filler in whole stuffing box compress, and has avoided the filler top and the bottom that general filling-material structure causes to compress and the more loose situation in middle part, makes each packing ring can both play seal action.
Described filler spacer ring middle part is provided with conduction steel ball 8-2 and spring 8-1; This conduction steel ball 8-2 contacts with valve rod 3.Conduction steel ball, under the promotion of spring, is close to valve rod and is effectively derived static.
Described filler spacer ring upper and lower end is provided with spring energy-storage seal ring 8-1, plays the effect of secondary seal, guarantees that sealing is more reliable.
In the access way of described valve body, install and automatically control by-pass collar 9, make the pressure at access way two ends before main valve is opened, keep balance.
The utility model has guaranteed well that from structural design aspect medium is the safety in utilization of High Temperature High Pressure oxygen operating mode lower valve.
Claims (6)
1. a military project extra-high voltage oxygen valve, comprises the sealing configuration between valve body and valve seat and flap, it is characterized in that: the sealing configuration between described valve body and valve seat and flap is the declinate sealing pair with 2 ° ~ 5 ° of differential seat angles; Valve stem seal is composite filling sealing configuration simultaneously.
2. a kind of military project extra-high voltage oxygen valve according to claim 1, is characterized in that: the tapering of described valve body and valve seat sealing surface (1-1) is 42 °～50 °, and the tapering of valve clack sealing surface (2-1) is 40 °～45 °.
3. a kind of military project extra-high voltage oxygen valve according to claim 1, is characterized in that: described valve body and valve seat sealing surface (1-1) and valve clack sealing surface (2-1) have difference of hardness.
4. a kind of military project extra-high voltage oxygen valve according to claim 1, is characterized in that: described composite filling sealing configuration is: middle is filler spacer ring, and this filler spacer ring is sequentially added and forms by soft packing and metallic stuffing up and down.
5. a kind of military project extra-high voltage oxygen valve according to claim 4, is characterized in that: described filler spacer ring middle part is provided with conduction steel ball (8-2) and spring (8-1); This conduction steel ball (8-2) contacts with valve rod (3).
6. a kind of military project extra-high voltage oxygen valve according to claim 4, is characterized in that: described filler spacer ring upper and lower end is provided with spring energy-storage seal ring (8-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320479725.4U CN203421193U (en) | 2013-08-07 | 2013-08-07 | Military industry extra-high pressure oxygen valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320479725.4U CN203421193U (en) | 2013-08-07 | 2013-08-07 | Military industry extra-high pressure oxygen valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203421193U true CN203421193U (en) | 2014-02-05 |
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ID=50020292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320479725.4U Expired - Fee Related CN203421193U (en) | 2013-08-07 | 2013-08-07 | Military industry extra-high pressure oxygen valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203421193U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410988A (en) * | 2013-08-07 | 2013-11-27 | 兰州高压阀门有限公司 | Military extra-high-pressure oxygen valve |
| CN104006212A (en) * | 2014-06-05 | 2014-08-27 | 张家港富瑞特种装备股份有限公司 | Valve rod sealing device for ball valves |
-
2013
- 2013-08-07 CN CN201320479725.4U patent/CN203421193U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410988A (en) * | 2013-08-07 | 2013-11-27 | 兰州高压阀门有限公司 | Military extra-high-pressure oxygen valve |
| CN104006212A (en) * | 2014-06-05 | 2014-08-27 | 张家港富瑞特种装备股份有限公司 | Valve rod sealing device for ball valves |
| CN104006212B (en) * | 2014-06-05 | 2016-03-02 | 张家港富瑞特种装备股份有限公司 | A kind of valve rod sealing device of ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140205 Termination date: 20190807 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |