CN201357176Y - Throttle orifice - Google Patents
Throttle orifice Download PDFInfo
- Publication number
- CN201357176Y CN201357176Y CNU200920111008XU CN200920111008U CN201357176Y CN 201357176 Y CN201357176 Y CN 201357176Y CN U200920111008X U CNU200920111008X U CN U200920111008XU CN 200920111008 U CN200920111008 U CN 200920111008U CN 201357176 Y CN201357176 Y CN 201357176Y
- Authority
- CN
- China
- Prior art keywords
- spool
- hole
- throttle orifice
- restricting orifice
- flange
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a high-pressure throttle orifice, comprising a flange and a valve core which is arranged in the flange and is provided with a through hole; the throttle orifice is characterized in that: a plurality of sections of the valve cores are arranged, and the number of the through holes on each section of the valve core is gradually increased from the inlet end of water currents to the outlet end thereof. The throttle orifice can lead the bypass voltage of a high-pressure decaling system to be kept within a normal pressure range, can cause the decaling system to work normally, reduce the production loss and effectively reduce the noises generated in the using process of the throttle orifice, so as to lead the following connected pipelines and equipment to not be washing out by high-speed water flows; the service life of the throttle orifice is not only improved, but also the service life of the following connected pipelines and equipment is increased, the production cost is reduced and the production efficiency is improved.
Description
Technical field
The utility model relates to a kind of high pressure restricting orifice, and especially a kind of bypass restricting orifice that carries out high-pressure water descaling in the slab rolling process belongs to the design and the manufacturing technology field of steel rolling auxiliary equipment.
Background technology
Usually, in the slab rolling process, use high-pressure water descaling system the steel surface that rolls out to be carried out de-scaling in mode intermittently.When each de-scaling point is not worked, be the safety of protection water pump and other equipment, need and will drain by the by-pass throttle orifice plate from the water under high pressure of high-pressure pump.There is following deficiency in existing restricting orifice in discharge process: High-Pressure Water can form High Pressure Difference through throttle orifice, thereby causes the heavy wear of throttle orifice; The high-energy injection water that the restricting orifice exit produces can produce and washes away more greatly being connected pipeline behind the restricting orifice, causes pipeline sharply to damage; Owing to reduce comparatively fast at the aperture place of restricting orifice pressure, be easy to generate cavitation, increased noise pollution; The discharge of the restricting orifice of flowing through is increased, and pressure reduction reduces, thereby influences the operate as normal of high pressure descaling system, and final influence is produced.Therefore, be necessary fully prior art is improved.
Summary of the invention
For overcome that existing restricting orifice exists easy to wear, noise big and serious to follow-up pipe flushing, influences deficiencies such as normal de-scaling, the utility model provides a kind of low noise, it is low that energy is sprayed in outlet, the high pressure restricting orifice that anti-wear performance is good.
The utility model is realized by following technical proposal: a kind of high pressure restricting orifice, comprise flange, place the spool of establishing through hole in the flange its, it is characterized in that spool is made as more piece, number of openings on every joint spool increases progressively to the port of export from the entrance point of current, so that satisfy required pressure of earial drainage and flow.
Through hole on the described spool is provided with two at least along spool convex cone wall, is used to the noise that disperses the through hole to be caused because of the pressure reduction comparatively fast produces cavitation.
Through hole on the described spool is made as inclined hole, and the angle of inclined hole is 9 °～39 °, and 24 ° is best, so that the water under high pressure leaving energy cancels out each other, thereby reduces port of export water velocity, and protection rear tube road and equipment are avoided high-velocity flow and washed away and damage.
Spool in the described flange is established two joints at least, and is stacked to one mutually, and the number of openings on the one joint spool of back is 0.5～2 times of last joint valve core through hole quantity, and to reduce the jet velocity and the energy of the port of export, protection rear tube road and miscellaneous equipment are not damaged.
Be compounded with wear-resisting tungsten carbide steel layer at the spool inner hole wall that is positioned at entrance side, be used to strengthen the anti-wear performance of restricting orifice.
The utility model compared with prior art has following advantage and effect: adopt such scheme, the bypass pressure of high pressure descaling system is remained in the normal pressure limit, allow the descaling system operate as normal, reduce production loss, effectively reduce the noise that restricting orifice in use produces, pipeline that connects after making and equipment are avoided washing away of high-velocity flow, not only improved the service life of restricting orifice, the pipeline that connects after also making and the service life of equipment increase, reduce production costs, enhance productivity.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the valve core structure schematic diagram of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further, is not limited thereto but hold within the utility model.
The high pressure restricting orifice that the utility model provides, comprise flange 4, place the spool of establishing through hole 5 in the flange 4 its, described spool is made as six joints, each spool 2 of first three joint is provided with four through holes 5, each spool 3 of back three joints is provided with six through holes 5, and be provided with along spool convex cone wall, each through hole 5 is made as inclined hole, the angle of inclined hole is 24 °, and being compounded with wear-resisting tungsten carbide steel layer 6,1 at the spool inner hole wall that is positioned at entrance side is locking nut, be used for fixing spool, as Fig. 1, Fig. 2.
Claims (5)
1, a kind of high pressure restricting orifice comprises flange, places the spool of establishing through hole in the flange its, it is characterized in that spool is made as more piece, and the number of openings on every joint spool increases progressively to the port of export from the entrance point of current.
2, restricting orifice according to claim 1 is characterized in that the through hole on the described spool is provided with two at least along spool convex cone wall.
3, restricting orifice according to claim 1 is characterized in that the through hole on the described spool is made as inclined hole, and the angle of inclined hole is 9 °～39 °.
4, restricting orifice according to claim 1 is characterized in that the spool in the described flange is established two joints at least, and is stacked to one mutually, and the number of openings on the one joint spool of back is 0.5～2 times of last joint valve core through hole quantity.
5, restricting orifice according to claim 1 is characterized in that being compounded with wear-resisting tungsten carbide steel layer at the spool inner hole wall that is positioned at entrance side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920111008XU CN201357176Y (en) | 2009-03-09 | 2009-03-09 | Throttle orifice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920111008XU CN201357176Y (en) | 2009-03-09 | 2009-03-09 | Throttle orifice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201357176Y true CN201357176Y (en) | 2009-12-09 |
Family
ID=41422934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920111008XU Expired - Fee Related CN201357176Y (en) | 2009-03-09 | 2009-03-09 | Throttle orifice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201357176Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338396A (en) * | 2011-07-12 | 2012-02-01 | 陈寅明 | Ignition device of cutting torch |
| CN111561581A (en) * | 2020-03-31 | 2020-08-21 | 杭州华惠阀门有限公司 | High-pressure opposite-impact regulating valve |
-
2009
- 2009-03-09 CN CNU200920111008XU patent/CN201357176Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338396A (en) * | 2011-07-12 | 2012-02-01 | 陈寅明 | Ignition device of cutting torch |
| CN111561581A (en) * | 2020-03-31 | 2020-08-21 | 杭州华惠阀门有限公司 | High-pressure opposite-impact regulating valve |
| CN111561581B (en) * | 2020-03-31 | 2024-05-24 | 杭州华惠阀门有限公司 | High-pressure opposite-impact type regulating 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: 20091209 Termination date: 20180309 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |