CN203116953U - On-line safety valve detector - Google Patents
On-line safety valve detector Download PDFInfo
- Publication number
- CN203116953U CN203116953U CN 201320071792 CN201320071792U CN203116953U CN 203116953 U CN203116953 U CN 203116953U CN 201320071792 CN201320071792 CN 201320071792 CN 201320071792 U CN201320071792 U CN 201320071792U CN 203116953 U CN203116953 U CN 203116953U
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- Prior art keywords
- safety valve
- oil gas
- pressure
- gas concentration
- concentration detector
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Abstract
An on-line safety valve detector comprises a mechanical fixture, a hydraulic system, a data acquisition system and a data analysis system. The data acquisition system consists of a pressure sensor, a displacement contact sensor and an oil gas concentration detector, wherein the pressure sensor is connected with a computer, an oil gas transmission pipeline is arranged at an input port of the oil gas concentration detector, the other end of the oil gas transmission pipeline is connected to a pressure relief outlet of a pressure pipeline for collecting oil gas, and an output port of the oil gas concentration detector is connected with the computer for analyzing an oil gas detection result. By detecting the concentration of oil gas at a pressure relief opening of a safety valve, analyzing and processing the detection result and combining displacement data acquired by the displacement sensor, the pressure relief state of the safety valve can be accurately judged and the reseating sealing performance of the safety valve can be detected.
Description
Technical field
The utility model relates to a kind of safety valve pick-up unit that opening pressure of safety valve reaches back the seat sealing that detects, and relates in particular to the on-line detecting instrument for safety valve of a kind of online detection opening pressure and sealing property.
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, electric power container, pressure pipeline.Safety valve need regularly detect, and general every year at least one times.Adjustment and verification that the important content that safety valve regularly detects is 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 remove safety valve and utilize special checking table to test from equipment, this method needs the apparatus at safety valve place to stop, and influence is produced, and efficient is low, labour intensity is big.And the adjusting and measuring on line mode can be measured the opening pressure of safety valve under the state that generating apparatus does not stop, and does not influence ordinary production, adjustment efficient height, and therefore, the mode of Adjusting and Measuring Safety Valve on Line has very high promotional value.
At present, known on-line detecting instrument for safety valve is declared open system, accessory power system, data recording and analytic system by mechanical clamp, displacement or audio frequency and is constituted.Its principle of work is: safety valve to be measured is applied lifting force, be pulled up to the safety valve valve rod, the trigger bit displacement sensor moves and records displacement, and audio sensor detects the air vibrations that the air-flow ejection causes simultaneously, then can judge safety valve unlatching, record data this moment; This moment, data recording and analytic system were carried out detection computations to the data of displacement moment, drew the opening pressure of safety valve.But, aligning the POL branch safety valve that is in operation when carrying out online detection, valve opening moment often sprays is not air-flow but oil plant, the sound vibrations that produces is not enough to trigger audio sensor, testing environment generally all is in the operating area in addition, a riot of sound, so audio frequency judgement safety valve is opened often distortion.And the part safety valve often needs safety lever to promote suitable height, just can open pressure release, therefore the displacement transducer faint lifting that detects valve rod may not truly reflect the beginning of the pressure release state of safety valve, and this all can cause existing safety valve to detect the distortion of data.
The utility model content
In order to overcome in the prior art, on-line detecting instrument for safety valve in testing process to declaring out the problem of Data Detection distortion, the utility model provides a kind of on-line detecting instrument for safety valve, this on-line detecting instrument for safety valve not only can detect the pressure release opening of safety valve exactly, and can detect the safety valve blowback sealing.
To achieve these goals, the utility model has adopted following technical scheme:
A kind of on-line detecting instrument for safety valve, comprise mechanical clamp, hydraulic system, data acquisition system (DAS) and data analysis system, described data acquisition system (DAS) comprises pressure transducer and the displacement feeler that is connected with computing machine, also comprise the gas concentration detector, the input port of this gas concentration detector is connected with transportation pipe, the other end of this transportation pipe is connected the pressure release exit of pressure pipeline, is used for collecting oil gas; The delivery outlet of described gas concentration detector connects computing machine, is used for the analyzing oil and gas testing result.
Preferably, described transportation pipe is provided with oil gas collecting device with the end that pressure pipeline pressure release outlet is connected.
Preferably, described oil gas collecting device is infundibulate.
The beneficial effects of the utility model are:
Not air-flow but the situation of oil plant at the safety valve of oil plant pressure pipeline what open the moment ejection, the utility model adopts the gas concentration detector that computing machine is collected, detects and transferred data to the oil gas of pressure pipeline pressure release outlet, the displacement data of computer structure resultant displacement sensor collection is analyzed, thereby can accurately judge the unlatching pressure release state of safety valve.
In addition, during safety valve blowback, still adopt the gas concentration detector that the gas concentration of safety valve is detected, judge a sealing state that returns of safety valve by the die-away curve of gas concentration.This on-line detecting instrument for safety valve is simple in structure, easy to operate, accuracy of judgement.
Description of drawings
Fig. 1 is the on-line detecting instrument for safety valve structural representation;
Fig. 2 is the horizontal clamp assembly structural representation of the mechanical clamp of on-line detecting instrument for safety valve.
Reference numeral:
1-displacement feeler, 101-displacement feeler seat, the 2-hand oil pump, the 3-oil pipe, the 4-oil cylinder, the 5-setscrew nut, the 6-set nut, the 7-column, the 8-connecting rod nut, the 9-center rod, the 10-pressure transducer, the 11-crossbeam, the spacing strong pass of 12-nut, 13-gas concentration detector, 14-attaching nut, 15-safety valve valve rod, 16-safety valve valve body, the 17-oil gas collecting device, the horizontal clamp assembly of 18-, the 181-screw rod, 182-dop seat, 183-screw thread dop, 184-synchrodrive case, the 185-handwheel, the 186-connection seat, the 19-computing machine, the 20-transportation pipe
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model is described in further detail, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making all other embodiment that obtain under the creative work prerequisite, all belong to the scope of the utility model protection.Therefore, accompanying drawing is illustrative with being described in essence, rather than is used for the protection domain of restriction claim.In addition, in this manual, accompanying drawing draws not in scale, and identical Reference numeral is represented identical part.
As shown in Figure 1, on-line detecting instrument for safety valve is made up of mechanical clamp, hydraulic system, data acquisition system (DAS), data analysis system.
Fig. 2 is the horizontal clamp assembly structural representation of on-line detecting instrument for safety valve mechanical clamp, as shown in the figure, middle part, a side at the synchrodrive case 184 of horizontal clamp assembly 18 is provided with handwheel 185, at two ends, synchrodrive case 184 another side two parallel screws 181 are installed, parallel screw 181 can be rotated under the drive of handwheel 185.
Screw rod 181 is provided with dop seat 182, and screw thread dop 183 is installed in this dop seat 182, selects suitable screw thread dop 183 at the safety valve of different model.
Also be provided with in the hole that connection seat 186, two root posts 7 are inserted in connection seat 186 respectively on the screw rod 181 and use screw lock.The top of two root posts 7 is set with crossbeam 11, and this crossbeam 11 is fixed on the column 7 by setscrew nut 5.
As shown in Figure 1, after center rod 9 was passed oil cylinder 4 and spacing strong pass nut 12, its lower end was connected with pressure transducer 10; The lower end of pressure transducer 10 is connected with safety valve valve rod 15 by attaching nut 14.Displacement feeler seat 101 is installed between pressure transducer 10 and the attaching nut 14; Oil cylinder 4 is fixing with crossbeam 11 by set nut 6.
As shown in Figure 1, the hydraulic system of on-line detecting instrument for safety valve comprises hand oil pump 2, oil cylinder 4, and hand oil pump 2 is connected by flexible pipe 3 and oil cylinder 4.Exert pressure by 2 pairs of oil cylinders 4 of hand oil pump, the annular plunger of oil cylinder 4 moves upward connecting rod nut 8 applied and upwards pressure, thereby center rod 9 is applied pulling force upwards, and center rod 9 applies pulling force upwards by pressure transducer 10 and 14 pairs of safety valve valve rods 15 of attaching nut.
As shown in Figure 1, the data acquisition system (DAS) of on-line detecting instrument for safety valve comprises pressure transducer 10, displacement feeler 1 and gas concentration detector 13.Described displacement feeler 1 is connected with pressure transducer 10, and pressure transducer 10 is connected with computing machine 19.Obviously, displacement feeler 1 also can be connected the transmission signal respectively with pressure transducer 10 with computing machine 19.The input port of described gas concentration detector 13 is connected with transportation pipe 20, and in use, the other end of this transportation pipe 20 is connected to the pressure release exit of pressure pipeline, is used for collecting oil gas; The delivery outlet of described gas concentration detector 13 connects computing machine, when gas concentration detector 13 detects the oil gas signal, the gas concentration signal is transferred to computing machine 19.In the present embodiment, described transportation pipe 20 is provided with oil gas collecting device 17 with the end that pressure pipeline pressure release outlet is connected, and this oil gas collecting device 17 preferably is set to infundibulate.
As shown in Figure 1, pressure transducer 10 is applied to additional pulling force on the safety valve valve rod 15 by the 9 externally applied forces collections of induction oil cylinder 4 pairs of center rod, and with this data transmission to computing machine 19.The plane contact of the lower end of displacement feeler 1 and dop seat 182.When safety valve valve rod 15 moves up under the effect of additional pulling force, displacement feeler seat 101 drives displacement feeler 1 and moves up, displacement feeler 1 is gathered mobile data, and with these data by pressure transducer 10 or directly transfer to computing machine 19.
Operating process is described further to the utility model below in conjunction with accompanying drawing.
The additional pulling force implementation process of safety valve is: at first, two screw rods 181 rotate simultaneously about reversing handwheel 185 synchrodrive case 184 being driven, and make the screw thread dop 183 fastening safety valve bodies 16 on both sides; Attaching nut 14 is connected on the safety valve valve rod 15, the lower end of pressure transducer 10 is connected with attaching nut 14, displacement feeler seat 101 is arranged between pressure transducer 10 and the attaching nut 14; After center rod 9 was passed oil cylinder 4 and spacing strong pass nut 12, its lower end was connected with pressure transducer 10.Then oil gas collecting device 17 is connected the pressure release exit of pressure pipeline.
Utilize 4 pressurizations of 2 pairs of oil cylinders of hand oil pump, the annular plunger of hydraulic cylinder 4 moves upward, apply pulling force upwards by 8 pairs of center rod 9 of connecting rod nut, center rod 9 applies additional pulling force upwards by pressure transducer 10 and 14 pairs of safety valve valve rods 15 of attaching nut.
In the process that safety valve valve rod 15 is applied additional pulling force upwards, in case displacement feeler 1 provides displacement signal, then record numerical value this moment, after postponing setting-up time, if gas concentration detector 13 detects the oil gas signal in the pressure release exit of pressure pipeline by oil gas collecting device 17, and this gas concentration strengthens the compound pressure release characteristic of curve, can judge that then safety valve valve body 16 opened pressure release, gathers pulling force and the displacement data of this moment; If gas concentration detector 13 does not provide the oil gas signal, even displacement feeler 1 provides displacement signal, can not judge safety valve pressure release.
The pulling force data of record when data analysis system utilizes safety valve to open, parameter and the current working pressure of pressure system in conjunction with safety valve calculate opening pressure of safety valve.According to this opening pressure value, judge whether safety valve pressure release pressure meets the demands, if pressure release 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 pressure release pressure survey, till meeting the demands.
In addition, can utilize this on-line detecting instrument for safety valve that the sealing of safety valve blowback is detected.Behind safety valve blowback, continue to utilize gas concentration detector 13 to detect, if detected gas concentration die-away curve meets sealing characteristics, think that then safety valve blowback is normal, otherwise think that safety valve blowback is inaccurate, respective handling should be in time done in seal failure.
In sum, not air-flow but the situation of oil plant at the safety valve of oil plant pressure pipeline what open the moment ejection, the utility model adopts the gas concentration detector that computing machine is collected, detects and transferred data to the oil gas of pressure pipeline pressure release outlet, the displacement data of computer structure resultant displacement sensor collection is analyzed, thereby can accurately judge the unlatching pressure release state of safety valve.
In addition, during safety valve blowback, still adopt the gas concentration detector that the gas concentration of safety valve is detected, judge a sealing state that returns of safety valve by the die-away curve of gas concentration.This on-line detecting instrument for safety valve is simple in structure, easy to operate, accuracy of judgement.
Claims (3)
1. on-line detecting instrument for safety valve, comprise mechanical clamp, hydraulic system, data acquisition system (DAS) and data analysis system, described data acquisition system (DAS) comprises pressure transducer and the displacement feeler that is connected with computing machine, it is characterized in that: described data acquisition system (DAS) also comprises the gas concentration detector, the input port of this gas concentration detector is connected with transportation pipe, the other end of this transportation pipe is connected the pressure release exit of pressure pipeline, is used for collecting oil gas; The delivery outlet of described gas concentration detector connects computing machine, is used for the analyzing oil and gas testing result.
2. on-line detecting instrument for safety valve according to claim 1 is characterized in that: described transportation pipe is provided with oil gas collecting device with the end that pressure pipeline pressure release outlet is connected.
3. on-line detecting instrument for safety valve according to claim 2, it is characterized in that: described oil gas collecting device is infundibulate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320071792 CN203116953U (en) | 2013-02-07 | 2013-02-07 | On-line safety valve detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320071792 CN203116953U (en) | 2013-02-07 | 2013-02-07 | On-line safety valve detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203116953U true CN203116953U (en) | 2013-08-07 |
Family
ID=48897288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320071792 Expired - Fee Related CN203116953U (en) | 2013-02-07 | 2013-02-07 | On-line safety valve detector |
Country Status (1)
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| CN (1) | CN203116953U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021361A (en) * | 2015-07-23 | 2015-11-04 | 蚌埠市特种设备监督检验中心 | Safety valve sealing test method |
| CN105115673A (en) * | 2015-07-23 | 2015-12-02 | 北京中科宇盛安全技术有限公司 | Intelligent type safety valve sealing test system |
| CN106246854A (en) * | 2016-08-24 | 2016-12-21 | 四川科路控制工程有限公司 | Bidirectional ratchet hydraulic actuator and testing device of safety valve |
| CN106625320A (en) * | 2016-11-10 | 2017-05-10 | 安徽皖拓自动化有限公司 | Safety valve online detection auxiliary fixture and use method thereof |
| CN109507035A (en) * | 2018-12-13 | 2019-03-22 | 浙江礼显试验仪器制造有限公司 | A kind of testing machine measuring object compression strength |
| CN111105885A (en) * | 2020-01-14 | 2020-05-05 | 阳江核电有限公司 | Support for online pressure setting of safety valve |
| CN114791344A (en) * | 2022-06-21 | 2022-07-26 | 沈阳佳德联益能源科技股份有限公司 | Detection device for detecting air tightness of control valve |
-
2013
- 2013-02-07 CN CN 201320071792 patent/CN203116953U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021361A (en) * | 2015-07-23 | 2015-11-04 | 蚌埠市特种设备监督检验中心 | Safety valve sealing test method |
| CN105115673A (en) * | 2015-07-23 | 2015-12-02 | 北京中科宇盛安全技术有限公司 | Intelligent type safety valve sealing test system |
| CN106246854A (en) * | 2016-08-24 | 2016-12-21 | 四川科路控制工程有限公司 | Bidirectional ratchet hydraulic actuator and testing device of safety valve |
| CN106625320A (en) * | 2016-11-10 | 2017-05-10 | 安徽皖拓自动化有限公司 | Safety valve online detection auxiliary fixture and use method thereof |
| CN109507035A (en) * | 2018-12-13 | 2019-03-22 | 浙江礼显试验仪器制造有限公司 | A kind of testing machine measuring object compression strength |
| CN111105885A (en) * | 2020-01-14 | 2020-05-05 | 阳江核电有限公司 | Support for online pressure setting of safety valve |
| CN114791344A (en) * | 2022-06-21 | 2022-07-26 | 沈阳佳德联益能源科技股份有限公司 | Detection device for detecting air tightness of control 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: 20130807 Termination date: 20150207 |
|
| EXPY | Termination of patent right or utility model |