CN203414226U - Filter screen sand-blocking device for muddy water pressure measurement - Google Patents
Filter screen sand-blocking device for muddy water pressure measurement Download PDFInfo
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- CN203414226U CN203414226U CN201320482570.XU CN201320482570U CN203414226U CN 203414226 U CN203414226 U CN 203414226U CN 201320482570 U CN201320482570 U CN 201320482570U CN 203414226 U CN203414226 U CN 203414226U
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- muddy water
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- scuttlebutt
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Abstract
The utility model relates to a filter screen sand-blocking device for muddy water pressure measurement. The filter screen sand-blocking device for the muddy water pressure measurement comprises a horizontally-arranged filter unit and a valve assembly which is installed on the filter unit. The filter unit comprises a bottomless transition barrel, a muddy water barrel, a clean water barrel, an intermediary fine filter screen, and a fine filter screen. An open end of the muddy water barrel is jointed with one end of the transition barrel; an open end of the clean water barrel is jointed with the other end of the transition barrel; the intermediary fine filter screen is clamped between the muddy water barrel and the transition barrel; and the fine filter screen is clamped between the transition barrel and the clean water barrel. The barrel bottom center of the muddy water barrel is connected with a muddy water system pressure measurement point by a pipeline; and the barrel bottom center of the clean water barrel is connected with a pressure measurement sensor through a pressure measurement pipeline. In the utility model, the sediment particles in the muddy water are blocked from entering the pressure measurement system; the deposition of the sediment and other solid particles is prevented in the measurement pipeline and in the pressure measurement sensor; and the valve assembly is used to discharge the sediment in the filter unit, so that the measurement accuracy of the muddy water pressure is ensured.
Description
Technical field
The utility model relates to muddy water pressure survey field, particularly about a kind of, for the tonometric filter screen of muddy water, hinders husky device.
Background technology
In many Hydraulic and Hydro-Power Engineerings, often need to measure hydraulic pressure and pressure reduction, while measuring clear water pressure and pressure reduction, many adopts pressure sensors.And many mudflows of China river is a lot, if by the direct cut-in pressure test macro of the muddy water in many mudflows river, because muddy water does not flow in testing conduit, silt will deposit gradually, in testing conduit, muddy water density will be greater than actual muddy water density gradually, and the variation of muddy water density will have a strong impact on tonometric precision.
In some test, pressure point is likely the negative pressure lower than atmospheric pressure, for avoiding air inlet and protection sensor, often sensor need be arranged in to pressure point below, and if pressure point pressure is likely lower than pressure for vaporization, sensor need be arranged in below pressure point 10m.As shown in Figure 1, suppose that sensor 0 is arranged on below pressure point, between pressure point and sensor 0, difference of elevation is Z, and pressure point pressure is p, and sensors measure pressure is p
m, sensors measure pressure p
mwith pressure point pressure there is following relation in p:
p
m＝p+Z·ρg (1)
In formula, p
msensors measure pressure, Pa; P is pressure point pressure, Pa; Z is difference of elevation between pressure point and sensor, m; ρ is the average density of muddy water in measuring channel, kg/m
3; G is local acceleration of gravity, m/s
2.
From formula (1), can find out, in the situation of other parameter constant, sensors measure pressure p
mbe directly proportional to the average density ρ of muddy water in measuring channel.But measuring in pipeline is hydrostatic, muddy water density can change because of sedimentation, and the variation of muddy water density will bring very large uncertainty to pressure survey.Suppose that the interior muddy water density of measured muddy water system (hereinafter to be referred as muddy water system) is ρ
s=1050kg/m
3, and measure density p in pipeline
m=1060kg/m
3, pressure point pressure p=100000Pa, Z=10m, p
m=203950Pa.But, owing to measuring muddy water density in pipeline in changing, and cannot Measurement accuracy, as still adopted density p in muddy water system
s=1050kg/m
3, the pressure point pressure conversing is 100981Pa, than actual pressure, exceeds nearly 1%.Certainly also may solid particle enter that to measure pipeline less, measure ρ in pipeline
m=1010kg/m
3, as still adopted ρ
s=1050kg/m
3, the pressure point pressure conversing is 96077Pa, lower by 4% than actual pressure.Therefore, be necessary to design a kind of system, only allow muddy water pressure to pass to load cell, the sand grain intercepting as far as possible in muddy water enters measurement pipeline and sensor.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide a kind of filter screen that enters pressure measuring system for intercepting muddy water sand grain and hinders husky device and using method thereof, to eliminate sand grain, in the gathering of pressure measuring system, deposit the uncertainty of bringing to pressure survey, improve the measuring accuracy of muddy water pressure.
For achieving the above object, the utility model is taked following technical scheme: a kind ofly for the tonometric filter screen of muddy water, hinder husky device, it is characterized in that, it comprises: the filter element of a horizontal layout and be installed on the valve member on described filter element; Wherein, described filter element comprises a bottomless transition bucket, the muddy water bucket that one end of one opening end and described transition bucket is docking together, the scuttlebutt that the other end of one opening end and described transition bucket is docking together, one clamping is at the middle fie screen of described muddy water bucket and transition bucket junction, and a clamping is at the fie screen of described transition bucket and scuttlebutt junction; Described muddy water Tong Tongdi center is connected with muddy water system pressure point by pipeline, and described scuttlebutt Tong Di center is connected with load cell by pressure measurement pipeline.
Described valve member comprises that is arranged on the connection of first on a pipeline valve between described muddy water bucket and muddy water system, one is arranged on second on pipeline between described scuttlebutt and load cell and is communicated with valve, three exhaust/water-filling valves that are separately positioned on bucket wall top and close described muddy water bucket, transition bucket and the scuttlebutt right side of described muddy water bucket, transition bucket and scuttlebutt, and three sand discharge valves that are separately positioned on bucket wall bottom and close described muddy water bucket, transition bucket and the scuttlebutt left side of described muddy water bucket, transition bucket and scuttlebutt.
The bucket wall of described muddy water bucket, transition bucket and scuttlebutt all adopts transparent organic glass to make; The selection so that observation is as the criterion of bucket footpath, each barrel long 1.5 times of should be not less than its barrel of footpath; The bucket of described muddy water bucket and scuttlebutt all adopts metal shrouding in an end, and at the bottom of two buckets, three sections of drums and two filter screens in aggregates closing by the some bolts that are distributed in outside drum.
Be communicated with described first of described muddy water bucket and muddy water system and be communicated with the sustained height that valve and described the second connection valve that is communicated with described scuttlebutt and load cell are positioned at described filter element.
The utility model is owing to taking above technical scheme, it has the following advantages: 1, the utility model has intercepted the sand grain in muddy water and entered pressure measuring system, avoid the deposition of the solid particulate matters such as silt in measuring channel and load cell, saved number of times and the expense of cleaning measuring channel and load cell.2, the utility model is owing to having adopted the two-layer filter screen design of encrypting gradually, can along sand grain, penetrate into the opposite direction not timing that clear water flies away passing according to sediment settlement and the observed result advancing to scuttlebutt and carry out sand surfing, sand discharge with clear water, can guarantee to enter clear water section without sand grain.And the silt that enters on a small quantity this section is got rid of in the measure such as the sand discharge by clear water section and clear water flushing, realization enters measuring channel and load cell without sand grain, reduce to measure that water body density in pipeline is uncertain and the pressure, the pressure reduction test error that produce improve measuring accuracy.3, the utility model, because filter screen only intercepts compared with coarse sediment, does not affect pressure transmission, in hydrostatic condition lower filter screen both sides without pressure reduction, can be by filter screen by the uncensored clear water side that is delivered to of muddy water wall pressure.
Accompanying drawing explanation
Fig. 1 is the structural representation of common pressure measurement mechanism
Fig. 2 is the structural representation that the utility model filter screen hinders husky device
Embodiment
Below in conjunction with drawings and Examples, to of the present utility model, be described in detail.
As shown in Figure 2, the utility model comprises filter element and valve member.Wherein, filter element adopts horizontal layout, and it comprises fie screen 13 and a fie screen 14 in a muddy water bucket 10, a transition bucket 11, a scuttlebutt 12.Muddy water bucket 10, transition bucket 11 and the uncovered of scuttlebutt 12 are docking together, and middle fie screen 13 clampings are in the junction of muddy water bucket 10 and transition bucket 11, and fie screen 14 clampings are in the junction of transition bucket 11 and scuttlebutt 12.Muddy water Tong10Tong Di center is connected with muddy water system pressure point (not shown) by pipeline, and scuttlebutt 10Tong Di center is connected with load cell (not shown) by pressure measurement pipeline.Valve member comprises that one is arranged on the connection valve 20 on pipeline between muddy water bucket 10 and muddy water system, one is arranged on the connection valve 21 on pipeline between scuttlebutt 12 and load cell, three exhaust/water-filling the valves 22,23 and 24, three that are arranged on muddy water bucket 10, transition bucket 11 and 12 barrels of wall tops of scuttlebutt and close muddy water bucket 10, transition bucket 11 and scuttlebutt 12 right sides are arranged on the sand discharge valve 25,26 and 27 of muddy water bucket 10, transition bucket 11 and 12 barrels of wall bottoms of scuttlebutt and close muddy water bucket 10, transition bucket 11 and scuttlebutt 12 left sides.
In a preferred embodiment, the bucket wall of muddy water bucket 10, transition bucket 11 and scuttlebutt 12 all adopts transparent organic glass to make, each barrel of all selection so that observation is as the criterion of footpath, and each barrel long 1.5 times of being not less than its barrel of footpath, the bucket of muddy water bucket 10 and scuttlebutt 12 all adopts metal shrouding in an end, and muddy water bucket 10, transition bucket 11 and scuttlebutt 12 are in aggregates closing by being distributed at the bottom of 12 barrels of muddy water bucket 10 and scuttlebutts some thru-bolt (not shown)s of outer.
In a preferred embodiment, be communicated with valve 20 and 21 and be positioned at sustained height.
The utility model also provides a kind of above-mentioned filter screen to hinder the using method of husky device, and the method comprises the following steps:
1) silt of inspection transition bucket 11, scuttlebutt 12 enters situation: if enter without silt, according to step 2) measure; If there is silt to enter, will can observes an inclination interphase by transparent organic glass drum and slowly drift about to clear water side, its top deflection muddy water side, bottom deflection clear water side; Now close and be communicated with valve 20 and 21, according to sedimentation or fly away situation, in accordance with the following methods each section carried out to sand discharge.
1. the sand discharge method of muddy water bucket 10: first open exhaust/water-filling valve 22 and be communicated with tap water, then open sand discharge valve 25 sand discharges.According to sand discharge situation, open successively the silt that exhaust/water-filling valve 23 and 24 use tap water are got rid of transition bucket 11, scuttlebutt 12.
2. the sand discharge method of transition bucket 11: first open exhaust/water-filling valve 23 and be communicated with tap water, then open sand discharge valve 26 sand discharges.According to sand discharge situation, then open the silt that exhaust/water-filling valve 24 use tap water are got rid of scuttlebutt 12.
3. the sand discharge method of scuttlebutt 12: first open exhaust/water-filling valve 24 and be communicated with tap water, then open sand discharge valve 27 sand discharges.As found, this section also has part silt, first closes sand discharge valve 27, then opens sand discharge valve 26 sand discharges of transition bucket 11.If desired the sand discharge valve 27 of scuttlebutt 12 is transformed into water-filling valve and use, to rinse, be deposited on scuttlebutt 12 portion's silt on the lower side.
2) open two connection valves 20,21, close all exhaust/water- filling valves 22,23,24 and sand discharge valve 25,26,27, measure muddy water pressure.
In measuring process, check in filter element whether have air accumulation, and get rid of in time the air of assembling in filter element, the air in each barrel all removes by its corresponding exhaust/filling valve door row.During exhaust, close and be communicated with valve 20, to avoid the silt of muddy water bucket 10 to enter scuttlebutt 12 by exhaust.During exhaust, the sand discharge valve 27 of scuttlebutt 12 can be transformed into water injection valve and use, tap water is introduced to filter element, open each barrel of exhaust/filling valve door row gas.
Overhead control principle and its implementation that the utility model also provides above-mentioned filter screen to hinder husky device, overhead control principle and implementation method are as follows:
Overhead control principle of the present utility model is: 1) in muddy water bucket 10, transition bucket 11 and scuttlebutt 12, be clear water during on-test, in test, by frequent sand discharge and clear water, rinse the sediment concentration that reduces muddy water bucket 10, thereby the sediment concentration that reduces muddy water bucket 10 and transition bucket 11 is poor, to alleviate fine sand to the diffusion of transition bucket 11.2) close when sand discharge, exhaust two ends, filter element left and right connection valve 20 and 21.3) avoid muddy water flowing from left to right.4) avoid silt to approach or enter scuttlebutt 12 through fie screen 14, as entering sand discharge in time.5) if sand grain has approached pressure measurement entrance, interrupt measuring, need close two connection valves 20 and 21 each barrels of post-flush, if desired removable cleaning.
The implementation method of the above-mentioned overhead control principle of the utility model is: the sediment concentration that 1) the frequent sand discharge by muddy water bucket 10 guarantees this barrel is far below the intrasystem sediment concentration of muddy water.2) during sand discharge two be communicated with valves 20 and 21 and all keep closed condition.3) general sequence of sand discharge is first muddy water bucket 10, then arranges transition bucket 11, finally clears bucket 12, but should first arrange this section when silt has entered scuttlebutt 12.
The various embodiments described above are only for illustrating the utility model; wherein the structure of each parts, connected mode and manufacture craft etc. all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.
Claims (5)
1. for the tonometric filter screen of muddy water, hinder a husky device, it is characterized in that, it comprises: the filter element of a horizontal layout and be installed on the valve member on described filter element; Wherein, described filter element comprises a bottomless transition bucket, the muddy water bucket that one end of one opening end and described transition bucket is docking together, the scuttlebutt that the other end of one opening end and described transition bucket is docking together, one clamping is at the middle fie screen of described muddy water bucket and transition bucket junction, and a clamping is at the fie screen of described transition bucket and scuttlebutt junction; Described muddy water Tong Tongdi center is connected with muddy water system pressure point by pipeline, and described scuttlebutt Tong Di center is connected with load cell by pressure measurement pipeline.
2. as claimed in claim 1ly for the tonometric filter screen of muddy water, hinder husky device, it is characterized in that, described valve member comprises that is arranged on the connection of first on a pipeline valve between described muddy water bucket and muddy water system, one is arranged on second on pipeline between described scuttlebutt and load cell and is communicated with valve, three are separately positioned on described muddy water bucket, the bucket wall top of transition bucket and scuttlebutt and close described muddy water bucket, exhaust/water-filling valve of transition bucket and scuttlebutt right side, and three be separately positioned on described muddy water bucket, the bucket wall bottom of transition bucket and scuttlebutt and close described muddy water bucket, the sand discharge valve of transition bucket and scuttlebutt left side.
3. as claimed in claim 1ly for the tonometric filter screen of muddy water, hinder husky device, it is characterized in that, a bucket wall for described muddy water bucket, transition bucket and scuttlebutt all adopts transparent organic glass to make; The selection so that observation is as the criterion of bucket footpath, each barrel long 1.5 times of should be not less than its barrel of footpath; The bucket of described muddy water bucket and scuttlebutt all adopts metal shrouding in an end, and at the bottom of two buckets, three sections of drums and two filter screens in aggregates closing by the some bolts that are distributed in outside drum.
4. as claimed in claim 2ly for the tonometric filter screen of muddy water, hinder husky device, it is characterized in that, a bucket wall for described muddy water bucket, transition bucket and scuttlebutt all adopts transparent organic glass to make; The selection so that observation is as the criterion of bucket footpath, each barrel long 1.5 times of should be not less than its barrel of footpath; The bucket of described muddy water bucket and scuttlebutt all adopts metal shrouding in an end, and at the bottom of two buckets, three sections of drums and two filter screens in aggregates closing by the some bolts that are distributed in outside drum.
5. as described in claim 2 or 4, for the tonometric filter screen of muddy water, hinder husky device, it is characterized in that, be communicated with described first of described muddy water bucket and muddy water system and be communicated with the sustained height that valve and described the second connection valve that is communicated with described scuttlebutt and load cell are positioned at described filter element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320482570.XU CN203414226U (en) | 2013-08-08 | 2013-08-08 | Filter screen sand-blocking device for muddy water pressure measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320482570.XU CN203414226U (en) | 2013-08-08 | 2013-08-08 | Filter screen sand-blocking device for muddy water pressure measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203414226U true CN203414226U (en) | 2014-01-29 |
Family
ID=49977108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320482570.XU Withdrawn - After Issue CN203414226U (en) | 2013-08-08 | 2013-08-08 | Filter screen sand-blocking device for muddy water pressure measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203414226U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398817A (en) * | 2013-08-08 | 2013-11-20 | 中国水利水电科学研究院 | Sand-resistant strainer device for muddy water pressure measurement and using method of sand-resistant strainer device |
| CN105807802A (en) * | 2014-12-04 | 2016-07-27 | 熊达煜 | Automatic-control dam water pressure detecting device and monitoring method |
-
2013
- 2013-08-08 CN CN201320482570.XU patent/CN203414226U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398817A (en) * | 2013-08-08 | 2013-11-20 | 中国水利水电科学研究院 | Sand-resistant strainer device for muddy water pressure measurement and using method of sand-resistant strainer device |
| CN105807802A (en) * | 2014-12-04 | 2016-07-27 | 熊达煜 | Automatic-control dam water pressure detecting device and monitoring method |
| CN105973526A (en) * | 2014-12-04 | 2016-09-28 | 熊达煜 | Water pressure detection device for automatically control dam and monitoring method thereof |
| CN105973526B (en) * | 2014-12-04 | 2018-11-13 | 长乐智睿恒创节能科技有限责任公司 | One kind automatically controlling dam hydraulic pressure force checking device and its monitoring method |
| CN105807802B (en) * | 2014-12-04 | 2018-11-20 | 东阳市天杨建筑工程设计有限公司 | A kind of automatic control dam hydraulic pressure force checking device and its monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Hongquan Inventor after: Zhang Haiping Inventor after: Lu Li Inventor after: Meng Xiaochao Inventor after: Zhang Jianguang Inventor after: Chen Ying Inventor after: Zhu Lei Inventor after: Ma Bingquan Inventor before: Xu Hongquan Inventor before: Zhang Haiping Inventor before: Lu Li Inventor before: Meng Xiaochao Inventor before: Zhang Jianguang Inventor before: Chen Ying Inventor before: Zhu Lei Inventor before: Ma Bingquan |
|
| CB03 | Change of inventor or designer information | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140129 Effective date of abandoning: 20150204 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140129 Effective date of abandoning: 20150204 |
|
| RGAV | Abandon patent right to avoid regrant |