CN203572636U - Safety valve online detector - Google Patents
Safety valve online detector Download PDFInfo
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- CN203572636U CN203572636U CN201320626373.0U CN201320626373U CN203572636U CN 203572636 U CN203572636 U CN 203572636U CN 201320626373 U CN201320626373 U CN 201320626373U CN 203572636 U CN203572636 U CN 203572636U
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- pressure
- safety valve
- sensing signal
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- displacement
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims description 17
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model relates to a safety valve online detector. The safety valve online detector comprises a pressure transmitter connected with a pressure detection opening of a to-be-detected device and used for continuously detecting the inner pressure of the to-be-detected device in real time and outputting a pressure sensing signal; a displacement detection unit used for detecting the opening height of a valve rod of a safety valve on the to-be-detected device in real time and outputting a displacement sensing signal; and a data processing unit respectively and electrically connected with the pressure transmitter and the displacement detection unit. The data processing unit comprises a data acquisition module and a central processing unit, the data acquisition module is used for respectively acquiring the pressure sensing signal and the displacement sensing signal and generating corresponding digital signals, and the central processing unit is used for generating and outputting a detection result including set pressure, discharge pressure, reseating pressure and opening height according to the corresponding digital signals. According to the safety valve online detector, indexes of the set pressure, the discharge pressure, the reseating pressure, the opening height and the like of the safety valve can be online detected and output, convenient and fast effects are realized, and the detection accuracy is increased.
Description
Technical field
The utility model relates to detector for safety valve, more particularly, relates to a kind of on-line detecting instrument for safety valve.
Background technology
In correlation technique, when being detected online, safety valve conventionally adopts two kinds of methods:
Method 1, in low pressure situation, utilize outside auxiliary power to help valve opening, complete the simulation test of high pressure.But due to technical conditions restriction, this method only can complete set-pressure test.
Method 2, directly the safety valve on equipment is boosted, until open, return seat.By the tensimeter on equipment, record the technical parameter of safety valve, but this method only can realize the test of set-pressure and blow pressure, and the data of test be artificial observation, record, trackability is poor, and accurate not.
According to GB/T12243-2005 requirement, the performance technical indicator of safety valve comprises: set-pressure, blowdown presssure, blow pressure, Lift etc.Therefore, prior art only can realize the technical indicators such as set-pressure, sealing property test, blow pressure, can not carry out the test of Lift, blowdown presssure technical indicator.
Utility model content
The technical problems to be solved in the utility model is, a kind of improved on-line detecting instrument for safety valve is provided.
The utility model solves the technical scheme that its technical matters adopts: construct a kind of on-line detecting instrument for safety valve, comprising:
For be connected the pressure unit that detects Devices to test internal pressure output pressure sensing signal with real-time continuous with the pressure detection mouth of Devices to test;
For the displacement detecting unit of safety valve valve rod Lift output displacement sensing signal on real-time detection Devices to test;
The data processing unit being electrically connected with described pressure unit, displacement detecting unit respectively;
Described data processing unit comprises data acquisition module and central processing unit, described data acquisition module gathers respectively from the described pressure-sensing signal of described pressure unit with from the described displacement sensing signal of displacement detecting unit and generate corresponding digital signal, described central processing unit is according to the digital signal of described pressure-sensing signal and displacement sensing signal, and generation output packet are containing the testing result of set-pressure, blowdown presssure, blow pressure and Lift.
Preferably, described displacement detecting unit comprises with the valve rod end face of safety valve just to the laser displacement sensor arranging.
Preferably, described data acquisition module comprises data collecting card.
Preferably, described central processing unit is according to the digital signal of pressure-sensing signal and displacement sensing signal, generates the pressure curve of the relation for characterizing pressure and time, and for characterize Lift and time relation open high curve; This on-line detecting instrument for safety valve also comprise for show described pressure curve, described in open the display device of high curve, wherein said pressure curve, described in open high curve and show in same coordinate.
Preferably, described display device comprises display screen or display.
Preferably, described data processing unit also comprises storage unit.
Preferably, described on-line detecting instrument for safety valve also comprises the bracing or strutting arrangement for supporting described laser displacement sensor.
Preferably, described bracing or strutting arrangement comprises support.
Implement on-line detecting instrument for safety valve of the present utility model, there is following beneficial effect: on-line detecting instrument for safety valve of the present utility model can detect online and the technical indicator such as the set-pressure of output safety valve, blowdown presssure, blow pressure, Lift, it is convenient to facilitate, and has improved accuracy of detection.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the application schematic diagram of the on-line detecting instrument for safety valve in the utility model embodiment;
Fig. 2 be the utility model on-line detecting instrument for safety valve output pressure curve, open high curve synoptic diagram.
Embodiment
For technical characterictic of the present utility model, object and effect being had more clearly, understand, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As shown in Figure 1, on-line detecting instrument for safety valve in preferred embodiment of the utility model comprises the pressure unit 20 that detects Devices to test 10 internal pressures output pressure sensing signal with real-time continuous for being connected with the pressure detection mouth 11 of Devices to test 10, for detecting in real time the displacement detecting unit 30 of safety valve 12 valve rod 13 Lifts on Devices to test 10 output displacement sensing signal, for the bracing or strutting arrangement 40 of bracing displacement detecting unit 30 and the data processing unit 50 being electrically connected with pressure unit 20, displacement detecting unit 30 respectively.
In certain embodiments, pressure unit 20 is sent to data processing unit 50 by pressure-sensing signal.Height detection unit comprise and valve rod 13 end faces of safety valve 12 just to the laser displacement sensor arranging, its displacement sensing signal by valve rod 13 is transferred to data processing unit 50.Understandable, height detection unit also can be other contact displacement detecting sensors that contact with valve rod 13.
Bracing or strutting arrangement 40 is support or strut etc., and displacement detecting unit 30 is located on bracing or strutting arrangement 40, with guarantee its be fixed on valve rod 13 directly over.
Further, data processing unit 50 comprises data acquisition module, central processing unit and storage unit.Data acquisition module comprises data collecting card, and it gathers respectively from the pressure-sensing signal of pressure unit 20 with from the displacement sensing signal of displacement detecting unit 30, and generates corresponding digital signal.
As shown in Figure 2, in certain embodiments, central processing unit is according to the digital signal of pressure-sensing signal, displacement sensing signal, generate the pressure curve 21 of the relation for characterizing pressure and time, in figure for dashed curve represents, and for characterize Lift and time relation open high curve 31, in figure for block curve represents.Preferably, pressure curve 21 and Kai Gao curve 31 are created on same coordinate.In coordinate, transverse axis represents that time t, two longitudinal axis represent respectively pressure P and Kai Gao H.
This data processing unit 50 also comprises for showing pressure curve 21, open the display device (not shown) of high curve 31, display device can be display screen or display, by the corresponding program software of installing on data processing unit 50, pressure curve 21 and Kai Gao curve 31 are shown in display device simultaneously.
Before detecting, the Lift of safety valve 12 is zero, in the upwards flex point of opening while finding valve rod 13 to start to raise on high curve 31, time point corresponding to this flex point is T1, and the point that time point T1 corresponds on pressure curve 21 is A, and force value corresponding to some A is the set-pressure of safety valve 12.
When safety valve 12 reaches stable emissions state, to open and on high curve 31, there will be height platform, the point that its correspondence is opened on high axle H is D, the Lift of opening high numerical value and be safety valve 12 of D point correspondence.
Find out in the height platform time interval on high curve 31 and correspond to the peak on pressure curve 21, its point that corresponds on pressure curve 21 is B, and force value corresponding to some B is the blowdown presssure of safety valve 12.
Open high value after finding safety valve 12 actions on high curve 31 and come back to 1 o'clock time point T2 corresponding to flex point opening, the point that time point T2 corresponds on pressure curve 21 is C, puts force value corresponding to C and be the blow pressure of safety valve 12.
Understandably, above-mentioned each technical characterictic can combination in any be used and unrestricted.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model instructions and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (8)
1. an on-line detecting instrument for safety valve, is characterized in that, comprising:
For be connected the pressure unit (20) that detects Devices to test (10) internal pressure output pressure sensing signal with real-time continuous with the pressure detection mouth (11) of Devices to test (10);
For detecting in real time the displacement detecting unit (30) of upper safety valve (12) valve rod (13) Lift of Devices to test (10) output displacement sensing signal;
The data processing unit (50) being electrically connected with described pressure unit (20), displacement detecting unit (30) respectively;
Described data processing unit (50) comprises data acquisition module and central processing unit, described data acquisition module gathers respectively from the described pressure-sensing signal of described pressure unit (20) with from the described displacement sensing signal of displacement detecting unit (30) and generate corresponding digital signal, described central processing unit is according to the digital signal of described pressure-sensing signal and displacement sensing signal, and generation output packet are containing the testing result of set-pressure, blowdown presssure, blow pressure and Lift.
2. on-line detecting instrument for safety valve according to claim 1, is characterized in that, described displacement detecting unit (30) comprises with valve rod (13) end face of safety valve (12) just to the laser displacement sensor arranging.
3. on-line detecting instrument for safety valve according to claim 1, is characterized in that, described data acquisition module comprises data collecting card.
4. on-line detecting instrument for safety valve according to claim 1, it is characterized in that, described central processing unit is according to the digital signal of pressure-sensing signal and displacement sensing signal, generate the pressure curve (21) of relation for characterizing pressure and time, and for characterize Lift and time relation open high curve (31); Described data processing unit (50) also comprise for show described pressure curve (21), described in open the display device of high curve (31), wherein said pressure curve (21), described in open high curve (31) and show in same coordinate.
5. on-line detecting instrument for safety valve according to claim 4, is characterized in that, described display device comprises display screen or display.
6. on-line detecting instrument for safety valve according to claim 4, is characterized in that, described data processing unit (50) also comprises storage unit.
7. on-line detecting instrument for safety valve according to claim 2, is characterized in that, described on-line detecting instrument for safety valve also comprises the bracing or strutting arrangement (40) for supporting described laser displacement sensor.
8. on-line detecting instrument for safety valve according to claim 7, is characterized in that, described bracing or strutting arrangement (40) comprises support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320626373.0U CN203572636U (en) | 2013-10-11 | 2013-10-11 | Safety valve online detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320626373.0U CN203572636U (en) | 2013-10-11 | 2013-10-11 | Safety valve online detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203572636U true CN203572636U (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320626373.0U Expired - Fee Related CN203572636U (en) | 2013-10-11 | 2013-10-11 | Safety valve online detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203572636U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499439A (en) * | 2013-10-11 | 2014-01-08 | 深圳市特种设备安全检验研究院 | Safety valve online detector |
| US11209099B2 (en) | 2017-01-31 | 2021-12-28 | John B. King | Pressure safety valve indicator |
-
2013
- 2013-10-11 CN CN201320626373.0U patent/CN203572636U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499439A (en) * | 2013-10-11 | 2014-01-08 | 深圳市特种设备安全检验研究院 | Safety valve online detector |
| US11209099B2 (en) | 2017-01-31 | 2021-12-28 | John B. King | Pressure safety valve indicator |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20161011 |