CN203688180U - Automatic blowby and leakage measuring apparatus for valve - Google Patents
Automatic blowby and leakage measuring apparatus for valve Download PDFInfo
- Publication number
- CN203688180U CN203688180U CN201320824436.3U CN201320824436U CN203688180U CN 203688180 U CN203688180 U CN 203688180U CN 201320824436 U CN201320824436 U CN 201320824436U CN 203688180 U CN203688180 U CN 203688180U
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- valve
- liquid
- erect riser
- electromagnetic valve
- string
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Abstract
The utility model discloses an automatic blowby and leakage measuring apparatus for a valve. An inlet of a detected valve (2) is connected with a valve testboard (1), and the outlet of the detected valve (2) is connected with one end of a liquid inlet solenoid valve (3). The other end of the liquid inlet solenoid valve (3) communicates with a vertical standpipe (4) vertically arranged, and the bottom of the vertical standpipe (4) is provided with a buffer unit (8) for minimizing impact of liquid on a pressure sensor. A pressure sensor (9) for measuring the pressure of liquid in the vertical standpipe (4) is arranged under the buffer unit (8), and an opening on the side surface of the vertical standpipe (4) is connected with one end of a liquid outlet solenoid valve (5). The other end of the liquid outlet solenoid valve (5) communicates with a liquid tank (6), and the top opening of the vertical standpipe (4) also communicates with the liquid tank (6). The change of liquid level is automatically detected through the pressure sensor, so that the liquid blowby and leakage of the valve can be measured automatically.
Description
Technical field
The utility model is a kind of valve string, leakage rate self-operated measuring unit, belongs to field of measuring technique.Be applicable to the automatic detection of liquid type valve string, leakage rate.
Background technology
The kind of valve has many kinds, and the Special valve using on some specific installations has strict requirement to string, leakage rate, and must carry out detection side can use.
Valve string, leakage rate adopt manual inspection mostly at present, need operating personnel to utilize measurer to collect valve leak liquid and carry out manual measurement again, detect length consuming time, and efficiency is lower, and precision is poor.
Summary of the invention
The deficiency that the utility model exists for above-mentioned prior art just and designing, provides a kind of valve string, leakage rate self-operated measuring unit, its objective is the string, the leakage rate that automatically detect valve by pressure transducer.
The purpose of this utility model is achieved through the following technical solutions:
This kind of valve string, leakage rate self-operated measuring unit, it is characterized in that: in this device, the import of tested valve (2) is connected with valve test board (1), the outlet of tested valve (2) is connected with one end of liquid inlet electromagnetic valve (3), the other end of liquid inlet electromagnetic valve (3) is communicated with the erect riser (4) of a vertical placement, the bottom of erect riser (4) arranges a snubber assembly (8) pressure transducer being impacted for reducing liquid, arrange one in the below of snubber assembly (8) for measuring the pressure transducer (9) of the fluid pressure in erect riser (4), the data-signal of pressure transducer (9) is transferred to control, display device (10), the side of erect riser (4) has an opening to connect one end of liquid outlet electromagnetic valve (5), the other end of liquid outlet electromagnetic valve (5) is communicated with fluid box (6), the open top of erect riser (4) is also communicated with fluid box (6), the length of top to the bottom of erect riser (4) is 90～110cm.
The utility model is to adopt vertical duct that string, the liquid level that leaks are improved, and by the variation of the automatic tracer liquid liquid level of pressure transducer, thereby realizes the automatic measurement of valve liquid string, leakage rate.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of the utility model device
Embodiment
Below with reference to drawings and Examples, utility model device is further described:
Shown in accompanying drawing 1, this kind of valve string, leakage rate self-operated measuring unit, it is characterized in that: in this device, the import of tested valve 2 is connected with valve test board 1, the outlet of tested valve 2 is connected with one end of liquid inlet electromagnetic valve 3, the other end of liquid inlet electromagnetic valve 3 is communicated with the erect riser 4 of a vertical placement, the bottom of erect riser 4 arranges a snubber assembly 8 pressure transducer being impacted for reducing liquid, below snubber assembly 8, arrange one for measuring the pressure transducer 9 of the fluid pressure in erect riser 4, the data-signal of pressure transducer 9 is transferred to control, display device 10, the side of erect riser 4 has an opening to connect one end of liquid outlet electromagnetic valve 5, the other end of liquid outlet electromagnetic valve 5 is communicated with fluid box 6, the open top of erect riser 4 is also communicated with fluid box 6, the length of the top of erect riser 4 to bottom is 90～110cm.
The measuring principle of this device is to adopt vertical duct that the liquid level of string, leakage is improved, detect the variation of this pipeline pressure by being arranged on the pressure transducer of vertical duct bottom, thereby the variation of liquid level in signal piping automatically, realizes the automatic measurement of valve liquid string, leakage rate.
If the pressure before test in erect riser is P1, the pressure after having tested is P2, and the proportion of liquid is ρ, the height change H of liquid in erect riser, and the radius of erect riser is R, the volume V of leakage liquid.Can release thus following computing formula:
V=P2-P1πR
2/ρ
In formula, R and ρ are all known quantities, therefore only need to be measured pressure P2 in erect riser and P1 and calculated by pressure transducer string, the leakage rate volume of valve.
Adopt the experimental test process of the utility model device as follows:
1, tested valve 2 one end are connected with valve test board 1, close liquid outlet electromagnetic valve 5.Note, in the time measuring beginning, must guaranteeing that erect riser has liquid, with the accuracy that guarantees to measure;
2, set the test desired parameters such as test duration, test pressure and maximum string, leakage rate;
3, by set pressure starting pressure pump, provide test needed pressure to tested valve 2, open liquid inlet electromagnetic valve 3, close liquid outlet electromagnetic valve 5;
4, start and measure timing, sampling is simultaneously arranged on the pressure transducer value P1 of erect riser bottom, keeps P1 sampled value;
5, because the opening that only has erect riser 4 is connected with the external world, therefore will flow into erect riser 4 from the liquid of tested valve string, leakage, the pressure of this BOP is increased, bottom at erect riser is provided with pressure transducer 9 by snubber assembly 8, the object of snubber assembly is installed is the direct impact to sensor when reducing leak of liquid, thereby cause the fluctuation of detecting sensor sampled value.Snubber assembly can adopt the methods such as throttle orifice;
6, in the time that measurement timing completes, immediately the pressure transducer sampled value P2 of erect riser 4 bottoms is recorded.
7, the sensor pressure change value P1 that basis collects and P2 both can calculate the volume of tested valve string, leakage liquid, also can calculate the flow velocity of this valve string, leakage according to the test period of setting;
8, close liquid inlet electromagnetic valve 3, closing presure pump, open liquid outlet electromagnetic valve 5, make the liquid in erect riser flow back to fluid box, simultaneously real-time detected pressures sensor sample value, in the time that this sampled value is less than P0, close liquid outlet electromagnetic valve 5, prevent that the liquid in erect riser from all flowing back to fluid box, while making to detect, string, leakage liquid cannot flow into erect riser immediately next time, cause measuring error;
Top design at erect riser 4 has overflow mechanism, and when fortuitous event occurs, string, leakage rate when excessive, can make overflow liquid directly flow back to fluid box.
Thereby this measurement mechanism can be combined and realize the detection of different strings, leakage rate from the vertical duct of different cross section size by the sensor of selecting different ranges, particularly, in the time using micro-pressure sensor to combine with small size tubule, can accurately detect small string, leakage rate.
Claims (1)
1. a valve string, leakage rate self-operated measuring unit, it is characterized in that: in this device, the import of tested valve (2) is connected with valve test board (1), the outlet of tested valve (2) is connected with one end of liquid inlet electromagnetic valve (3), the other end of liquid inlet electromagnetic valve (3) is communicated with the erect riser (4) of a vertical placement, the bottom of erect riser (4) arranges a snubber assembly (8) pressure transducer being impacted for reducing liquid, arrange one in the below of snubber assembly (8) for measuring the pressure transducer (9) of the fluid pressure in erect riser (4), the data-signal of pressure transducer (9) is transferred to control, display device (10), the side of erect riser (4) has an opening to connect one end of liquid outlet electromagnetic valve (5), the other end of liquid outlet electromagnetic valve (5) is communicated with fluid box (6), the open top of erect riser (4) is also communicated with fluid box (6), the length of top to the bottom of erect riser (4) is 90～110cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320824436.3U CN203688180U (en) | 2013-12-13 | 2013-12-13 | Automatic blowby and leakage measuring apparatus for valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320824436.3U CN203688180U (en) | 2013-12-13 | 2013-12-13 | Automatic blowby and leakage measuring apparatus for valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203688180U true CN203688180U (en) | 2014-07-02 |
Family
ID=51010067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320824436.3U Expired - Fee Related CN203688180U (en) | 2013-12-13 | 2013-12-13 | Automatic blowby and leakage measuring apparatus for valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203688180U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104846926A (en) * | 2015-05-19 | 2015-08-19 | 浙江大学 | System and method for measuring pipe network outside source invasion via volume method |
| CN112050998A (en) * | 2020-09-18 | 2020-12-08 | 辽宁工程技术大学 | Tunnel construction model test device |
-
2013
- 2013-12-13 CN CN201320824436.3U patent/CN203688180U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104846926A (en) * | 2015-05-19 | 2015-08-19 | 浙江大学 | System and method for measuring pipe network outside source invasion via volume method |
| CN112050998A (en) * | 2020-09-18 | 2020-12-08 | 辽宁工程技术大学 | Tunnel construction model test device |
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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: 20140702 Termination date: 20161213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |