CN201335777Y - Safety valve on-line adjusting system - Google Patents
Safety valve on-line adjusting system Download PDFInfo
- Publication number
- CN201335777Y CN201335777Y CNU2008201780759U CN200820178075U CN201335777Y CN 201335777 Y CN201335777 Y CN 201335777Y CN U2008201780759 U CNU2008201780759 U CN U2008201780759U CN 200820178075 U CN200820178075 U CN 200820178075U CN 201335777 Y CN201335777 Y CN 201335777Y
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- safety valve
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- oil cylinder
- nut
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Abstract
The utility model relates to a safety valve on-line adjusting system which can carry out on-line pressure adjustment to a safety valve; the safety valve on-line adjusting system comprises a mechanical clamp, a hydraulic system, a data collecting system and a data analysis software; a hydraulic cylinder is fixed on the beam of the mechanical clamp, a central connecting pole penetrates through a spoke type force sensor and a hydraulic cylinder ring-shaped plunger piston sequentially for limiting a forced close device, and is connected with a safety valve pole by a connecting nut. A data acquisition instrument of the data collecting system obtains signals through the spoke type force sensor, a displacement touch sensor and an audio-frequency sensor; the audio-frequency sensor leads a sound-electricity converting element to be sealed in the cavity of the audio-frequency sensor, and is directly absorbed on the side wall of the connecting nut by audio-frequency sensor. The data analysis software is arranged on a computer, receives data from the data acquisition instrument by a u s b interface, so as to carry out data displaying, analysis and storage and provide operating guidance. The system has rational and compact mechanism structure, the starting judgment is accurate, the safety valve on-line adjusting system has good human-computer interaction environment and is convenient for field usage.
Description
Technical field
The utility model relates to a kind of safety valve detection system, particularly a kind of system that safety valve is carried out online opening pressure adjustment.
Background technology
The safety valve of some all has been installed on equipment such as the boiler of departments such as electric power, oil, chemical industry, pressure vessel, pressure pipeline.Safety valve need regularly detect, and general every year at least once.Adjustment and verification that the important content that safety valve regularly detects is an opening pressure of safety valve.
The adjustment of opening pressure of safety valve has adjusting and measuring on line and two kinds of methods of off-line adjustment.The off-line adjustment need utilize special checking table to test with removing on the safety valve slave unit, and this method needs the safety valve place to establish the parking of product device, and influence is produced, and efficient is low, and labour intensity is big.And adjusting and measuring on line can not measured the opening pressure of safety valve under the dead ship condition at generating apparatus, and need not improve system pressure.
The volume that is used to the Adjusting and Measuring Safety Valve on Line instrument produced at present is big, weight is big, carries inconvenience.Judge that the method that safety valve is opened has at present: method of characteristic point, displacement detecting method and sound monitoring method.Method of characteristic point is the erroneous judgement that prevents compelling force curvilinear characteristic point, must guarantee additional external force continuously evenly, therefore adopt the appliance requires of this method to be furnished with electro hydraulic gear and apply additional external force, system is loaded down with trivial details, and is bulky, is not suitable for on-the-spot the use.Adopt the many unlatchings of monitoring safety valve with simple contact probe structure of instrument of displacement detecting method.Easy-to-dismount being threaded all adopted in connection between the hydraulic cylinder of this kind instrument, coupling nut and valve rod, certainly exist small gap between the coupling component, this gap disappears when applying pulling force, the probe and the displacement between the contact point that cause being fixed on the coupling nut must change, unlatching causes but this variation is not safety valve, causes erroneous judgement easily.The instrument of employing sound monitoring method directly utilizes the sound of pickup head snooping safety opening of valves.Under the more noisy situation of neighbourhood noise, utilize this instrument to be difficult to accurately judge the unlatching of safety valve.
Summary of the invention
The purpose of this utility model is to provide a kind of adjusting and measuring on line system of spring type safety valve opening pressure.This system adopts displacement detecting method and sound monitoring method to judge the safety valve opening, the opening accuracy of judgement, and convenient data processing, simple to operate, compact conformation, volume be little, be convenient to execute-in-place.
The purpose of this utility model is achieved in that the Adjusting and Measuring Safety Valve on Line system is made up of mechanical clamp, hydraulic system, data acquisition system (DAS) and data analysis software four parts.Mechanical clamp for two root posts 7 respectively the screw-in level step up the screw and the locking of assembly 18, cover one crossbeam 11 above column 7, and fix with setscrew nut 5; Place oil cylinder 4 in crossbeam 11 holes, with set nut 6 that oil cylinder 4 is fixing; Center rod 9 is inserted the center pit of oil cylinders 4, screw in center rod 7 lower ends spacing-close device 12 by force, again with the lower end and safety valve valve rod 15 connections of coupling nut 14 with center rod 9; Force transducer 10 is inserted on the top of center rod 9, makes the hollow plunger contact of force transducer 10 oil cylinders 4; On center rod 9, screw in connecting rod nut 8, contact with force transducer 10.Hydraulic system is that hand oil pump 2 utilizes ready-packaged joint to be connected by flexible pipe 3 and oil cylinder 4.
Data acquisition system (DAS) comprises force transducer 10, displacement feeler 1, audio sensor 13, data collecting instrument 20.Audio sensor comprises housing 13.1, gland bonnet 13.5, magnetic 13.4, acoustic-electric conversion element 13.3, voice-frequency cable 13.2, and housing 13.1 has an opening, and gland bonnet 13.5 is sealed in this opening part; Magnetic 13.4 sticks on gland bonnet 13.5 inboards; Perforate and place acoustic-electric conversion element 13.3 on housing 13.1; Acoustic-electric conversion element 13.3 is by the audio input interface of voice-frequency cable 13.2 output sound signals to computing machine.The data collecting instrument panel is provided with power selection switch 20.2, accumulator impulse electricity switch 20.3, data output usb interface 20.4, power light 20.1, and there are outlet 20.7, force transducer interface 20.5, displacement feeler interface 20.6 in the back side.
Data analysis software finishes that data acquisition, tension variations waveform show in real time, the demonstration in real time of safety valve opening, TipWizard, data analysis storage.
The utility model compared with prior art, its advantage is:
1. improve the traditional mechanical clamp structure, adopt ingenious rational design with force transducer place crossbeam above, the dismounting of sensor is convenient, is beneficial to execute-in-place.And this design can be adopted short column, makes that the arrangement of structure is more reasonable, compact, and the volume of physical construction is little, in light weight, is easy to carry, and has solved traditional structure because safety valve position insufficient space and the difficult problem that can't measure.
2. because acoustic-electric conversion element is placed in the airtight housing, and audio collection probe directly is adsorbed on coupling nut and monitors its vibration audio frequency, therefore can shield neighbourhood noise effectively, debate the sound of other safety valve gases at high pressure friction flap when opening exactly; The magnetic of utilizing magnetic directly is adsorbed on the audio frequency probe surface of coupling nut, and is simple in structure, easy to operate.
3. the data collecting instrument of data acquisition system (DAS) provides field power supply and two kinds of power supply modes of accumulator, uses for the scene of adjusting and measuring on line system and provides convenience;
4. the part hardware capability that replaces general regulator based on the data analysis software of virtual instrument thought, can on the adjustment interface, show safety valve essential information, tension variations curve, safety valve opening simultaneously, and provide TipWizard, contain much information, the objective interface friendliness has good man-machine interaction environment;
5. data analysis software has designed the Adjusting and Measuring Safety Valve on Line database, the information of in database, can prestore sensor and safety valve, and the direct information of read sensor and safety valve from database during adjustment has improved work on the spot efficient at the scene; The adjustment data of safety valve can in time be saved in the database, and are not subjected to restricted number, can conveniently inquire about, analyze and file.
Description of drawings
Fig. 1 is an Adjusting and Measuring Safety Valve on Line system architecture synoptic diagram.
Fig. 2 steps up the modular construction synoptic diagram for the mechanical clamp level.
Fig. 3 is the audio sensor structural representation.
Fig. 4 is a data collecting instrument contour structures synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
Handwheel 18.6 is equipped with at the side middle part that the level of mechanical clamp is stepped up the synchrodrive case 18.5 of assembly 18, and at two parallel screws 18.4 of two ends, another side installation, dop seat 18.2 is housed on screw rod 18.4, selects screw thread dop 18.3 to be contained in this dop seat 18.2 at different safety valve models.Insert respectively in connection seat 18.7 holes and use screw lock in that connection seat 18.7, two root posts 7 also are housed on the screw rod 18.4, suit crossbeam 11 and fix above two root posts 7 with nut 5; Center rod 9 is passed force transducer 10, oil cylinder 4, spacing-as to close device 12 by force successively, and is connected with safety valve valve rod 15 by attaching nut 14; Oil cylinder 4 cylinder bodies are fixing with crossbeam 11 by set nut 6; Force transducer 10 is a radial, and its outer ring, bottom contacts with the annular plunger of oil cylinder 4, and the top inner ring contacts with connecting rod nut 8.Hydraulic system is that hand oil pump 2 utilizes ready-packaged joint to be connected by flexible pipe 3 and oil cylinder 4.
The displacement feeler 1 of data acquisition system (DAS) is fixed on the attaching nut 14, audio sensor 13 is adsorbed on attaching nut 14 side, the signal wire of force transducer 10 and displacement feeler 1 is introduced force transducer interface 20.1, the displacement feeler interface 20.6 at data collecting instrument 20 back sides respectively, and audio sensor 13 is directly received on the audio input interface of computing machine.Data collecting instrument 20 is finished the collection of power and displacement signal, and by the usb interface of front panel data is sent to computing machine.
Data analysis software finishes that data acquisition, pulling force waveform show in real time, the demonstration in real time of safety valve opening, operation indicating, data analysis storage.
The additional pulling force of safety valve applies process: at first, two screw rods 18.4 rotate simultaneously about reversing handwheel 18.6 synchrodrive case 18.5 being driven, and safety valve valve body 16 is clamped on two screw thread dops 18.3; Then, utilize 4 pressurizations of 2 pairs of hydraulic cylinders of hand oil pump, the annular plunger of hydraulic cylinder 4 moves upward force transducer 7 is applied power upwards, force transducer 7 applies pulling force upwards by 14 pairs of center rod 9 of attaching nut, and center rod 9 acts on additional pulling force upwards by attaching nut 14 again on safety valve valve rod 15.
On safety valve valve rod 15, apply in the additional pulling force, utilize the opening of displacement feeler 1 or audio sensor 13 monitoring safety valve, and utilize force transducer 10 to measure the size of additional pulling force.The data analysis software that computing machine was gathered and be sent to the signal of three sensors by data collecting instrument 20 is handled.Safety valve is opened when additional pulling force reaches certain value, displacement feeler 1 is subjected to displacement with attaching nut 14, audio sensor 13 detects high pressure draught and agitates by the audio frequency that the crack slit of safety valve produces, and data analysis software can be opened and record additional value of thrust at this moment according to the signal determining safety valve of feeler 1 or audio sensor 13.Additional value of thrust when data analysis software utilizes safety valve to open in conjunction with the parameter of safety valve and the work at present pressure of pressure system, calculates the opening pressure of safety valve.According to this opening pressure value, judge whether opening pressure of safety valve meets the demands, if its opening pressure does not meet the demands, then adjust in conjunction with the pressure adjustment assembly of safety valve, reuse aforesaid operations and carry out the opening pressure measurement, till meeting the demands.
Claims (4)
1 one kinds of Adjusting and Measuring Safety Valve on Line systems, form by mechanical clamp, hydraulic system, data acquisition system (DAS) and data analysis software four parts, it is characterized in that: described mechanical clamp has a level and steps up assembly (18), two root posts (7) screw in screw and the locking that this level is stepped up assembly (18) respectively, at top suit one crossbeam (11) of column (7), and fixing with setscrew nut (5); Place an oil cylinder (4) in crossbeam (11) hole, with set nut (6) that this oil cylinder (4) is fixing; Center rod (9) is inserted in the center pit of this oil cylinder (4), screw in center rod (9) lower end spacing-close device (12) by force, use attaching nut (14) that the lower end of center rod (9) is connected with the upper end of safety valve valve rod (15) again; Force transducer (10) is inserted in from the top of center rod (9), and force transducer (10) is contacted with the hollow plunger of oil cylinder (4); Connecting rod nut (8) is spun on the center rod (9), and contacts with force transducer (10); Described hydraulic system comprises hand oil pump (2), oil cylinder (4), flexible pipe (3), and hand oil pump (2) utilizes ready-packaged joint to pass through flexible pipe (3) and connects with oil cylinder (4).
2 Adjusting and Measuring Safety Valve on Line according to claim 1 systems, it is characterized in that: described data acquisition system (DAS) comprises force transducer (10), displacement feeler (1), audio sensor (13), data collecting instrument (20), displacement feeler (1) is fixed on the attaching nut (14), and audio sensor (13) is adsorbed on the side of attaching nut (14).
3. Adjusting and Measuring Safety Valve on Line according to claim 2 system, it is characterized in that: audio sensor comprises housing (13.1), gland bonnet (13.5), magnetic (13.4), acoustic-electric conversion element (13.3), voice-frequency cable (13.2), housing (13.1) has an opening, and gland bonnet (13.5) is sealed in this opening part; Magnetic (13.4) sticks on gland bonnet (13.5) inboard; Go up perforate and place acoustic-electric conversion element (13.3) at housing (13.1); This acoustic-electric conversion element (13.3) is by the audio input interface of voice-frequency cable (13.2) output sound signal to computing machine.
4. Adjusting and Measuring Safety Valve on Line according to claim 3 system, it is characterized in that: the panel of described data collecting instrument (20) is provided with power selection switch (20.2), accumulator impulse electricity switch (20.3), data output USB interface (20.4), power light (20.1), and the back side is provided with outlet (20.7), force transducer interface (20.5), displacement feeler interface (20.6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201780759U CN201335777Y (en) | 2008-11-19 | 2008-11-19 | Safety valve on-line adjusting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201780759U CN201335777Y (en) | 2008-11-19 | 2008-11-19 | Safety valve on-line adjusting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201335777Y true CN201335777Y (en) | 2009-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201780759U Expired - Fee Related CN201335777Y (en) | 2008-11-19 | 2008-11-19 | Safety valve on-line adjusting system |
Country Status (1)
| Country | Link |
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| CN (1) | CN201335777Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907506A (en) * | 2010-08-04 | 2010-12-08 | 大连智云自动化装备股份有限公司 | Device for detecting tightness of two junction surfaces between oil inlet/outlet valve and pump cover and plunger sleeve |
| CN101936801A (en) * | 2010-09-08 | 2011-01-05 | 江苏理士电池有限公司 | Automatic detector for safety valve opening and closing pressure |
| CN102829935A (en) * | 2012-08-21 | 2012-12-19 | 芜湖通和汽车管路系统有限公司 | Oil-cooled tube bulb leakage detection fixture and detection method thereof |
| CN107091258A (en) * | 2017-05-02 | 2017-08-25 | 湖南中财化学建材有限公司 | A kind of semi-automatic ball valve hydraulic pressure device for fast detecting |
| CN109029944A (en) * | 2018-06-22 | 2018-12-18 | 中航锂电（江苏）有限公司 | A kind of cover board safety valve multi-functional pressure force test device of lithium battery |
-
2008
- 2008-11-19 CN CNU2008201780759U patent/CN201335777Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907506A (en) * | 2010-08-04 | 2010-12-08 | 大连智云自动化装备股份有限公司 | Device for detecting tightness of two junction surfaces between oil inlet/outlet valve and pump cover and plunger sleeve |
| CN101907506B (en) * | 2010-08-04 | 2011-09-28 | 大连智云自动化装备股份有限公司 | Device for detecting tightness of two junction surfaces between oil inlet/outlet valve and pump cover and plunger sleeve |
| CN101936801A (en) * | 2010-09-08 | 2011-01-05 | 江苏理士电池有限公司 | Automatic detector for safety valve opening and closing pressure |
| CN102829935A (en) * | 2012-08-21 | 2012-12-19 | 芜湖通和汽车管路系统有限公司 | Oil-cooled tube bulb leakage detection fixture and detection method thereof |
| CN107091258A (en) * | 2017-05-02 | 2017-08-25 | 湖南中财化学建材有限公司 | A kind of semi-automatic ball valve hydraulic pressure device for fast detecting |
| CN107091258B (en) * | 2017-05-02 | 2018-11-20 | 湖南中财化学建材有限公司 | A kind of hydraulic device for fast detecting of semi-automatic ball valve |
| CN109029944A (en) * | 2018-06-22 | 2018-12-18 | 中航锂电（江苏）有限公司 | A kind of cover board safety valve multi-functional pressure force test device of lithium battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20101119 |