CN105135012A - Device and method for adjusting opening and closing pressure difference of safety valve - Google Patents
Device and method for adjusting opening and closing pressure difference of safety valve Download PDFInfo
- Publication number
- CN105135012A CN105135012A CN201510455031.0A CN201510455031A CN105135012A CN 105135012 A CN105135012 A CN 105135012A CN 201510455031 A CN201510455031 A CN 201510455031A CN 105135012 A CN105135012 A CN 105135012A
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- Prior art keywords
- safety valve
- valve
- blowdown
- fine turning
- pressure difference
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Classifications
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- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to a device and method for adjusting the opening and closing pressure difference of a safety valve. The device comprises an air storage tank, a pressure sensor, a control cabinet, a switch sensor, an air source and the opening and closing pressure difference fine-adjustment type safety valve. The opening and closing pressure difference fine-adjustment type safety valve comprises a valve body, a valve seat, an adjusting ring, a valve clack, a back flushing disc, a guiding sleeve, a valve deck, a spring and a valve rod. Mainly, the device for adjusting the opening and closing pressure difference is arranged in an upper plane of the back flushing disc, and adjustment on the opening and closing pressure difference of the safety valve and calculation on the opening and closing pressure difference value of the safety valve are achieved by adjusting the device for adjusting the opening and closing pressure difference. The device and method are suitable for adjusting the opening and closing pressure difference of the spring type safety valve.
Description
Technical field
The invention belongs to valve field, particularly about Blowdown of a safety valve debugging apparatus and the adjustment method of safety valve.The present invention is applicable to the debugging of Direct spring loaded safety valve Blowdown of a safety valve.
Background technique
Direct spring loaded safety valve comprises valve body, valve seat, Adjusting ring, flap, Disc holder, guide sleeve, valve gap, spring and valve rod, when safety valve suction side pressure medium rises to spring Set pressure value, flap is opened, when the decline of safety valve suction side pressure medium reaches certain value, flap is closed, its shortcoming is: flap is in the process of closing, Disc holder cannot be acted on and flap carries on the back prone active force by regulation valve body inner chamber place medium, the Blowdown of a safety valve value of safety valve can only rely on manufacturing process to determine, cannot regulate Blowdown of a safety valve, also the numerical value of Blowdown of a safety valve cannot be determined.
Summary of the invention
The object of the invention is the shortcoming existed for prior art, provide a kind of and can regulate, the safety valve Blowdown of a safety valve debugging apparatus of computationally secure valve Blowdown of a safety valve and adjustment method.
Safety valve Blowdown of a safety valve debugging apparatus comprises gas holder, pressure transducer, control cabinet, ball valve, stop valve, source of the gas and Blowdown of a safety valve fine turning safety valve, gas holder one end is connected with source of the gas by stop valve, ball valve import is arranged on gas holder top, the import of Blowdown of a safety valve fine turning safety valve is arranged on ball valve outlet end, pressure transducer is arranged on gas holder top, and pressure sensor signal end is connected with control cabinet, Blowdown of a safety valve fine turning safety valve comprises valve body, valve seat, Adjusting ring, flap, Disc holder, guide sleeve, valve gap, spring and valve rod, mainly Disc holder is provided with Blowdown of a safety valve controlling device in plane, this Blowdown of a safety valve controlling device comprises the annular regulating tank on Disc holder in plane, regulating block, locating slot and positioning screwn, annular regulating tank internal ring wall is shaped with adjustment screw thread, regulating block is inlaid in annular regulating tank by the screw thread of its inner hole wall, locating slot has some evenly to arrange in annular regulating tank base circumference direction, positioning screwn is arranged in the countersunk screw holes in regulating block planar annular, the end of positioning screwn extend in locating slot, countersunk screw holes is evenly arranged at regulating block planar annular circumferencial direction.
Preferably, install at Blowdown of a safety valve fine turning safety valve top and drive high sensor, open high sensor signal end and be connected with control cabinet.
The adjustment method of safety valve Blowdown of a safety valve debugging apparatus, mainly adopts following steps:
A. close ball valve, slow opening stop valve, source of the gas is inflated to gas holder, when the force value of pressure transducer display reaches the Set pressure value of Blowdown of a safety valve fine turning safety valve setting, closes stop valve;
B. slowly ball valve is opened;
C. slow opening stop valve, source of the gas continues inflation to gas holder, and when the pressure medium in gas holder reaches the Set pressure value of Blowdown of a safety valve fine turning safety valve setting, Blowdown of a safety valve fine turning safety valve is opened;
D. close stop valve, the pressure medium in gas holder declines, and Blowdown of a safety valve fine turning safety valve cuts out;
E. read cracking pressure value and the closing pressure value of the Blowdown of a safety valve fine turning safety valve shown in control cabinet, and calculate Blowdown of a safety valve value;
F. ball valve is closed;
G. pull down positioning screwn, clockwise or be rotated counterclockwise regulating block 1/4th and enclose, the distance on record regulating block upper-end surface and Disc holder between plane, installs positioning screwn again;
H. a ~ g step is repeated, until Blowdown of a safety valve value reaches required value.
Advantage of the present invention adopts by gas holder, pressure transducer, control cabinet, opens the Blowdown of a safety valve debugging apparatus that high sensor, ball valve, stop valve, source of the gas and Blowdown of a safety valve fine turning safety valve form safety valve, the Disc holder of Blowdown of a safety valve fine turning safety valve is provided with Blowdown of a safety valve controlling device in plane, realizes regulating the Blowdown of a safety valve of safety valve and the Blowdown of a safety valve value of computationally secure valve.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of Blowdown of a safety valve fine turning safety valve in Fig. 1 of the present invention.
1 gas holder, 2 pressure transducers, 3 control cabinets, 4 drive high sensor, 5 ball valves, 6 stop valves, 7 sources of the gas, 8 Blowdown of a safety valve fine turning safety valves, 8.1 valve bodies, 8.2 valve seats, 8.3 Adjusting rings, 8.4 flaps, 8.5 Disc holders, 8.6 guide sleeves, 8.7 valve gaps, 8.8 springs, 8.9 valve rods, 8.10 annular regulating tanks, 8.11 regulating blocks, 8.12 locating slots, 8.13 positioning screwns.
Embodiment
Safety valve Blowdown of a safety valve debugging apparatus as shown in Figure 1, comprise gas holder 1, pressure transducer 2, control cabinet 3, ball valve 5, stop valve 6, source of the gas 7 and Blowdown of a safety valve fine turning safety valve 8, gas holder 1 one end is communicated with source of the gas 7 by stop valve 6, ball valve 5 import is arranged on gas holder 1 top, the import of Blowdown of a safety valve fine turning safety valve 8 is arranged on ball valve 5 outlet end, pressure transducer 2 is arranged on gas holder 1 top, and pressure transducer 2 signal end is connected with control cabinet 3, Blowdown of a safety valve fine turning safety valve 8 comprises valve body 8.1, valve seat 8.2, Adjusting ring 8.3, flap 8.4, Disc holder 8.5, guide sleeve 8.6, valve gap 8.7, spring 8.8 and valve rod 8.9, as shown in Figure 2, Disc holder 8.5 is provided with Blowdown of a safety valve controlling device in plane, this Blowdown of a safety valve controlling device comprises the annular regulating tank 8.10 on Disc holder 8.5 in plane, regulating block 8.11, locating slot 8.12 and positioning screwn 8.13, annular regulating tank 8.10 internal ring wall is shaped with adjustment screw thread, regulating block 8.11 is inlaid in annular regulating tank 8.10 by the screw thread of its inner hole wall, locating slot 8.12 has some evenly to arrange in annular regulating tank 8.10 base circumference direction, positioning screwn 8.13 is arranged in the countersunk screw holes in regulating block 8.11 planar annular, the end of positioning screwn 8.13 extend in locating slot 8.12, the position of secured adjusted block 8.11 on Disc holder 8.5, countersunk screw holes is evenly arranged at regulating block 8.11 planar annular circumferencial direction.
Install at Blowdown of a safety valve fine turning safety valve 8 top and drive high sensor 4, open high sensor 4 signal end and be connected with control cabinet 3.
Safety valve Blowdown of a safety valve adjustment method is:
A. ball valve 5 is closed, slow opening stop valve 6, source of the gas 7 is inflated to gas holder 1, when the force value that pressure transducer 2 shows reaches the Set pressure value of Blowdown of a safety valve fine turning safety valve setting, close stop valve 6, the Set pressure value of Blowdown of a safety valve fine turning safety valve is set by the spring 8.8 in pressure setting device, and this is known technology;
B. slowly open ball valve 5, in gas holder 1, gas enters in Blowdown of a safety valve fine turning safety valve 8, and gas holder 1 internal pressure is declined;
C. slow opening stop valve 6, source of the gas 7 continues inflation to gas holder 1, supplements gas holder 1 internal pressure, and when the pressure medium in gas holder 1 reaches the Set pressure value of Blowdown of a safety valve fine turning safety valve 8 setting, Blowdown of a safety valve fine turning safety valve 8 is opened;
D. close stop valve 6, the pressure medium in gas holder 1 declines, and Blowdown of a safety valve fine turning safety valve 8 cuts out;
E. read cracking pressure value and the closing pressure value of the Blowdown of a safety valve fine turning safety valve 8 of display in control cabinet 3, and calculate Blowdown of a safety valve value, Blowdown of a safety valve value is that cracking pressure value deducts closing pressure value;
F. ball valve 5 is closed;
G. pull down positioning screwn 8.13, clockwise or be rotated counterclockwise regulating block 8.11 1/4th and enclose, the distance on record regulating block 8.11 upper-end surface and Disc holder 8.5 between plane, installs positioning screwn 8.13 again;
H. repeat a ~ g step, until Blowdown of a safety valve value reaches required value, the distance on regulating block 8.11 upper-end surface now and Disc holder 8.5 between plane, namely as the fixed value of same model bulk article, does not need every platform product to debug, to enhance productivity.
Claims (3)
1. a safety valve Blowdown of a safety valve debugging apparatus, comprise gas holder (1), pressure transducer (2), control cabinet (3), ball valve (5), stop valve (6), source of the gas (7) and Blowdown of a safety valve fine turning safety valve (8), gas holder (1) one end is communicated with source of the gas (7) by stop valve (6), ball valve (5) import is arranged on gas holder (1) top, Blowdown of a safety valve fine turning safety valve (8) import is arranged on ball valve (5) outlet end, drive high sensor (4) and be arranged on Blowdown of a safety valve fine turning safety valve (8) top, pressure transducer (2) is arranged on gas holder (1) top, pressure transducer (2) signal end is connected with control cabinet (3), Blowdown of a safety valve fine turning safety valve (8) comprises valve body (8.1), valve seat (8.2), Adjusting ring (8.3), flap (8.4), Disc holder (8.5), guide sleeve (8.6), valve gap (8.7), spring (8.8) and valve rod (8.9), it is characterized in that being provided with Blowdown of a safety valve controlling device in the upper plane of Disc holder (8.5), this Blowdown of a safety valve controlling device comprises the annular regulating tank (8.10) in the upper plane of Disc holder (8.5), regulating block (8.11), locating slot (8.12) and positioning screwn (8.13), annular regulating tank (8.10) internal ring wall is shaped with adjustment screw thread, regulating block (8.11) is inlaid in annular regulating tank (8.10) by the screw thread of its inner hole wall, locating slot (8.12) has some evenly to arrange in annular regulating tank (8.10) base circumference direction, positioning screwn (8.13) is arranged in the countersunk screw holes in regulating block (8.11) planar annular, the end of positioning screwn (8.13) extend in locating slot (8.12), countersunk screw holes is evenly arranged at regulating block (8.11) planar annular circumferencial direction.
2. safety valve Blowdown of a safety valve debugging apparatus according to claim 1, it is characterized in that installing at Blowdown of a safety valve fine turning safety valve (8) top driving high sensor (4), open high sensor (4) signal end and be connected with control cabinet (3).
3. a safety valve Blowdown of a safety valve adjustment method, is characterized in that adopting following debugging step:
A. close ball valve (5), slow opening stop valve (6), when the force value that pressure transducer (2) shows reaches the Set pressure value of Blowdown of a safety valve fine turning safety valve setting, close stop valve (6);
B. ball valve (5) is slowly opened;
C. slow opening stop valve (6), when the pressure medium in gas holder (1) reaches the Set pressure value that Blowdown of a safety valve fine turning safety valve (8) sets, Blowdown of a safety valve fine turning safety valve (8) is opened;
D. close stop valve (6), Blowdown of a safety valve fine turning safety valve (8) cuts out;
E. read cracking pressure value and the closing pressure value of the Blowdown of a safety valve fine turning safety valve (8) of display in control cabinet (3), and calculate Blowdown of a safety valve value;
F. ball valve (5) is closed;
G. positioning screwn (8.13) is pulled down, clockwise or be rotated counterclockwise regulating block (8.11) 1/4th and enclose, distance between record regulating block (8.11) upper-end surface and the upper plane of Disc holder (8.5), installs positioning screwn (8.13) again;
H. a ~ g step is repeated, until Blowdown of a safety valve value reaches required value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510455031.0A CN105135012B (en) | 2015-07-17 | 2015-07-17 | Safety valve blowdown of a safety valve debugging apparatus and adjustment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510455031.0A CN105135012B (en) | 2015-07-17 | 2015-07-17 | Safety valve blowdown of a safety valve debugging apparatus and adjustment method |
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| CN105135012A true CN105135012A (en) | 2015-12-09 |
| CN105135012B CN105135012B (en) | 2018-01-16 |
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| CN201510455031.0A Active CN105135012B (en) | 2015-07-17 | 2015-07-17 | Safety valve blowdown of a safety valve debugging apparatus and adjustment method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307369A (en) * | 2019-07-09 | 2019-10-08 | 福建福清核电有限公司 | A kind of operated micropressure adjusting valve off-line setting calculation device and method |
| CN112128439A (en) * | 2020-10-13 | 2020-12-25 | 荆门宏图特种飞行器制造有限公司 | Safety valve back pressure device |
| CN113653840A (en) * | 2021-07-27 | 2021-11-16 | 上海空间推进研究所 | Automatic auxiliary debugging device for pressure reducing valve, operation method and pressure reducing valve device |
Citations (7)
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| HU212169B (en) * | 1992-06-29 | 1996-06-28 | Bene | Spring-loaded safety valve |
| US6095183A (en) * | 1998-08-31 | 2000-08-01 | Taylor; Julian S. | Safety relief valve |
| CN201397248Y (en) * | 2009-03-30 | 2010-02-03 | 北京市弗米特测试技术研究所 | Portable safety valve tester |
| CN201636399U (en) * | 2009-11-10 | 2010-11-17 | 北京航天动力研究所 | Spring loaded safety valve with high reseating performance |
| CN202188181U (en) * | 2011-08-17 | 2012-04-11 | 浙江超达阀门股份有限公司 | Low-pressure safety valve |
| CN203809801U (en) * | 2014-04-22 | 2014-09-03 | 四川成都空分配套阀门有限公司 | Low-temperature full lift safety valve |
| CN204805658U (en) * | 2015-07-17 | 2015-11-25 | 永一阀门集团有限公司 | Open and close pressure differential fine tuning relief valve |
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2015
- 2015-07-17 CN CN201510455031.0A patent/CN105135012B/en active Active
Patent Citations (7)
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| HU212169B (en) * | 1992-06-29 | 1996-06-28 | Bene | Spring-loaded safety valve |
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| CN201397248Y (en) * | 2009-03-30 | 2010-02-03 | 北京市弗米特测试技术研究所 | Portable safety valve tester |
| CN201636399U (en) * | 2009-11-10 | 2010-11-17 | 北京航天动力研究所 | Spring loaded safety valve with high reseating performance |
| CN202188181U (en) * | 2011-08-17 | 2012-04-11 | 浙江超达阀门股份有限公司 | Low-pressure safety valve |
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| 范军等: "高性能蒸汽安全阀背压腔压力试验研究", 《阀门》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307369A (en) * | 2019-07-09 | 2019-10-08 | 福建福清核电有限公司 | A kind of operated micropressure adjusting valve off-line setting calculation device and method |
| CN110307369B (en) * | 2019-07-09 | 2024-02-09 | 福建福清核电有限公司 | Offline setting device and method for self-operated micro-pressure regulating valve |
| CN112128439A (en) * | 2020-10-13 | 2020-12-25 | 荆门宏图特种飞行器制造有限公司 | Safety valve back pressure device |
| CN112128439B (en) * | 2020-10-13 | 2022-06-21 | 荆门宏图特种飞行器制造有限公司 | Back pressure device of safety valve |
| CN113653840A (en) * | 2021-07-27 | 2021-11-16 | 上海空间推进研究所 | Automatic auxiliary debugging device for pressure reducing valve, operation method and pressure reducing valve device |
| CN113653840B (en) * | 2021-07-27 | 2023-09-26 | 上海空间推进研究所 | Automatic auxiliary debugging device for pressure reducing valve, operation method and pressure reducing valve device |
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| Publication number | Publication date |
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| CN105135012B (en) | 2018-01-16 |
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Denomination of invention: Safety valve opening and closing differential pressure commissioning device and commissioning method Effective date of registration: 20221205 Granted publication date: 20180116 Pledgee: Agricultural Bank of China Limited Yongjia County sub branch Pledgor: YONGYI-VALVE GROUP Co.,Ltd. Registration number: Y2022330003489 |