CN101280861A - Safety valve judging and opening method and apparatus - Google Patents
Safety valve judging and opening method and apparatus Download PDFInfo
- Publication number
- CN101280861A CN101280861A CNA2008101131635A CN200810113163A CN101280861A CN 101280861 A CN101280861 A CN 101280861A CN A2008101131635 A CNA2008101131635 A CN A2008101131635A CN 200810113163 A CN200810113163 A CN 200810113163A CN 101280861 A CN101280861 A CN 101280861A
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- safety valve
- probe
- valve body
- force transducer
- information output
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Abstract
The invention discloses a method and device for determining a safety valve is opened. The safety valve includes a valve body, positive and negative poles of a probe information output wire are respectively connected to the valve body and the probe, and the other end connect to a force sensor, the other end of the force sensor connects to a data processor by a force sensor information output wire, the data processor connects to a indicator lamp such that the probe, the valve body and the indicator lamp form a circuit return. By employing the technical scheme of the invention, force application system may be simplified, instruments weight may be reduced, observation error may be reduced, perturbation motion is prevented and security of on-line check operation is ensured.
Description
Technical field
The present invention relates to safety valve on-line testing technical field, relate in particular to a kind of safety valve judging and opening method and device.
Background technique
What safety valve on-line testing instrument generally adopted method of characteristic point declares the evolution formula, this mode is by applying the initial tension of spring that a continuously uniform additional external force overcomes safety valve, when safety valve is opened, deformation takes place in spring self, flex point appears in the applied force conditional curve of the acquisition system of its capacity sensor, and the pairing value of this flex point is the cracking pressure of institute's survey safety valve.This kind declared the evolution formula and must be relied on the electric hydaulic mode its safety valve to be carried out the lifting of additional external force, could guarantee to measure the authenticity of flex point, if adopt the hand-hydraulic mode must in hydraulic system, add accumulator, hydraulic system is overweight, is unfavorable for on-the-spot the use, and its application of force time, PROPEL etc. all can influence The ultimate results, think that operate miss is excessive, the work of beating on during verification there being the flap of safety valve has disturbance to production status, and has the verification potential safety hazard.
Summary of the invention
The objective of the invention is to propose a kind of safety valve judging and opening method and device, can simplify force application system, alleviate instruments weight, reduce measurement error, operating mode is not had disturbance, and guarantee the Security of on-line testing work.
For reaching this purpose, the present invention by the following technical solutions:
A kind of safety valve judging and opening method may further comprise the steps:
The valve body of A, probe, described safety valve and tutorial light form circuit loop;
B, when described safety valve is in running order, described probe is contacted with described valve body;
C, open when the flap of described safety valve, produce displacement, described probe disconnects with described valve body, and described tutorial light changes, and judges described safety valve unlatching.
In the steps A, the positive and negative polarities of detecting probe information output line connect described valve body and described probe respectively, the other end connects force transducer, the described force transducer the other end is connected with data processing system by force transducer information output line, data processing system connects described tutorial light, makes probe, valve body and tutorial light form circuit loop.
Among the step B, described probe contacts with described valve body, and the positive and negative polarities of described detecting probe information output line are in channel status, is transferred to described data processing system by described force transducer and described force transducer information output line, and described tutorial light goes out.
Among the step C, described probe breaks away from described valve body, and the positive and negative polarities of described detecting probe information output line are in turnoff state, and described tutorial light lights, and described data processing system is judged described safety valve unlatching.
Further comprising the steps of:
When D, described safety valve open, gather the pairing output voltage values of described force transducer and be converted into the additional external force value and carry out calculation process, obtain described opening pressure of safety valve value.
A kind of safety valve judging opening apparatus, described safety valve comprises valve body, comprise probe, detecting probe information output line, force transducer, force transducer information output line, tutorial light and data processing system, the positive and negative polarities of described detecting probe information output line connect described valve body and described probe respectively, the other end connects described force transducer, the described force transducer the other end is connected with described data processing system by described force transducer information output line, described data processing system connects described tutorial light, makes described probe, valve body and tutorial light form circuit loop.
Adopted technological scheme of the present invention, the evolution formula of declaring of flap fine motion method has no requirement to the application of force process of reality, only need accurately ask safety valve to open the additional external force of moment, this just can simplify force application system, thereby unconditional realization electric hydaulic mode arrives the simplification of hand-hydraulic mode, even can replace hydraulic way measure with the force mechanism of screw thread jack, has alleviated the gross weight of on-line testing instrument, reduce working strength, improved working efficiency; The error of avoiding force application system to bring has improved the verification degree of accuracy; Flap is not gone up and is jumped during verification, and operating mode is not had disturbance, has fully guaranteed the Security of on-line testing work.
Description of drawings
Fig. 1 is the structural representation of safety valve judging opening apparatus in the specific embodiment of the invention.
Embodiment
Further specify technological scheme of the present invention below in conjunction with accompanying drawing and by embodiment.
The criterion of declaring out of safety valve on-line testing instrument is meant in applying the process of continuous additional external force, differentiates the fact foundation that the safety valve flap has reached opening state.Fig. 1 is the structural representation of safety valve judging opening apparatus in the specific embodiment of the invention.As shown in Figure 1, safety valve comprises valve body 1, the safety valve judging opening apparatus comprises probe 2, detecting probe information output line 3, force transducer 4, force transducer information output line 5, tutorial light 6 and data processing system 7, the positive and negative polarities of detecting probe information output line connect valve body and probe respectively, the other end connects force transducer, the force transducer the other end is connected with data processing system by force transducer information output line, and data processing system connects tutorial light, makes probe, valve body and tutorial light form circuit loop.
When probe contacts with valve body, the positive and negative polarities of detecting probe information output line are in channel status, are transferred to data processing system by force transducer and force transducer information output line, and tutorial light goes out.
When probe disengaging valve body, the positive and negative polarities of detecting probe information output line are in turnoff state, and tutorial light lights, and data processing system is judged the safety valve unlatching.
At this moment, gather the pairing output voltage values of described force transducer and be converted into the additional external force value and carry out calculation process, thereby obtain opening pressure of safety valve value accurately.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (6)
1, a kind of safety valve judging and opening method is characterized in that, may further comprise the steps:
The valve body of A, probe, described safety valve and tutorial light form circuit loop;
B, when described safety valve is in running order, described probe is contacted with described valve body;
C, open when the flap of described safety valve, produce displacement, described probe disconnects with described valve body, and described tutorial light changes, and judges described safety valve unlatching.
2, a kind of safety valve judging and opening method according to claim 1, it is characterized in that, in the steps A, the positive and negative polarities of detecting probe information output line connect described valve body and described probe respectively, the other end connects force transducer, the described force transducer the other end is connected with data processing system by force transducer information output line, and data processing system connects described tutorial light, makes probe, valve body and tutorial light form circuit loop.
3, a kind of safety valve judging and opening method according to claim 2, it is characterized in that, among the step B, described probe contacts with described valve body, the positive and negative polarities of described detecting probe information output line are in channel status, be transferred to described data processing system by described force transducer and described force transducer information output line, described tutorial light goes out.
4, a kind of safety valve judging and opening method according to claim 2 is characterized in that, among the step C, described probe breaks away from described valve body, the positive and negative polarities of described detecting probe information output line are in turnoff state, and described tutorial light lights, and described data processing system is judged described safety valve unlatching.
5, a kind of safety valve judging and opening method according to claim 4 is characterized in that, and is further comprising the steps of:
When D, described safety valve open, gather the pairing output voltage values of described force transducer and be converted into the additional external force value and carry out calculation process, obtain described opening pressure of safety valve value.
6, a kind of safety valve judging opening apparatus, described safety valve comprises valve body, it is characterized in that, comprise probe, detecting probe information output line, force transducer, force transducer information output line, tutorial light and data processing system, the positive and negative polarities of described detecting probe information output line connect described valve body and described probe respectively, the other end connects described force transducer, the described force transducer the other end is connected with described data processing system by described force transducer information output line, described data processing system connects described tutorial light, makes described probe, valve body and tutorial light form circuit loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101131635A CN101280861A (en) | 2008-05-28 | 2008-05-28 | Safety valve judging and opening method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101131635A CN101280861A (en) | 2008-05-28 | 2008-05-28 | Safety valve judging and opening method and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101280861A true CN101280861A (en) | 2008-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101131635A Pending CN101280861A (en) | 2008-05-28 | 2008-05-28 | Safety valve judging and opening method and apparatus |
Country Status (1)
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| CN (1) | CN101280861A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680217A (en) * | 2012-04-20 | 2012-09-19 | 芜湖杰锋汽车动力系统有限公司 | Opening pressure detection device for check valve |
| CN103591914A (en) * | 2013-11-20 | 2014-02-19 | 江苏省交通科学研究院股份有限公司 | Early warning device for whole displacement of bridge and use method thereof |
| CN103913306A (en) * | 2013-06-25 | 2014-07-09 | 李治涛 | Opening judgment method and online detection method of safety valve |
-
2008
- 2008-05-28 CN CNA2008101131635A patent/CN101280861A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680217A (en) * | 2012-04-20 | 2012-09-19 | 芜湖杰锋汽车动力系统有限公司 | Opening pressure detection device for check valve |
| CN102680217B (en) * | 2012-04-20 | 2015-02-18 | 杰锋汽车动力系统股份有限公司 | Opening pressure detection device for check valve |
| CN103913306A (en) * | 2013-06-25 | 2014-07-09 | 李治涛 | Opening judgment method and online detection method of safety valve |
| CN103591914A (en) * | 2013-11-20 | 2014-02-19 | 江苏省交通科学研究院股份有限公司 | Early warning device for whole displacement of bridge and use method thereof |
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Open date: 20081008 |