CN204989221U - Portable current surveying device - Google Patents
Portable current surveying device Download PDFInfo
- Publication number
- CN204989221U CN204989221U CN201520775582.0U CN201520775582U CN204989221U CN 204989221 U CN204989221 U CN 204989221U CN 201520775582 U CN201520775582 U CN 201520775582U CN 204989221 U CN204989221 U CN 204989221U
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- China
- Prior art keywords
- outer tube
- valve
- pipe
- water inlet
- portable current
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- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
- Measuring Volume Flow (AREA)
Abstract
The utility model provides a portable current surveying device, it includes the outer tube, is located overlap intraductal inner tube and lie in the angle reading device at outer tube top, the outer tube is the type of falling T and is equipped with horizontal pipe and perpendicular to the vertical duct of horizontal pipe, horizontal pipe and vertical duct intercommunication, and horizontal pipe is equipped with water inlet and delivery port, the inner tube is the L type and is equipped with vertical section and horizontal segment, vertical section is located in the vertical duct of outer tube, the horizontal segment is located horizontal intraductal and orientation the water inlet of horizontal pipe extends. Compared with the prior art, the utility model discloses portable current surveying device utilizes the poor fluid computation velocity of flow of intraductal outer liquid level, its simple structure, and the portability is very good, applicablely surveys the usage in open -air rivers, and easy operation, and the velocity of flow that obtains rivers that can be quick, accurate has very strong practicality.
Description
Technical field
The utility model relates to geological exploration technical field, particularly relates to a kind of Portable Current Measurement device, can be used for carrying out surface water flow measurement in field geology exploration.
Background technology
Surface water flow velocity, traffic investigation be field hydrogeology investigation and pollution surveys in an important process content, flow velocity is again a critical data of calculated flow rate, therefore quickly and accurately measure water velocity will greatly improve field work efficiency.Have the current measuring instrument of multiple maturation in the market, using more general has rotary propeller type current meter, electromagnetic type current meter, doppler velocimeter etc., but inconvenience is carried in these instrument fields, fragile and cost is higher, how to use at fixing discharge site.Field many uses buoy method flow measurement, namely measures buoy and can obtain flow velocity by time of 2 in a distance in river, and float gauging requires low because of its applicable elements, easy to operation and be widely used, but still existing problems.Buoy not necessarily according to streamlined flow and also the impact by weather and floater larger, all there is error in artificial tacheometric survey and timing aspect, and the flow velocity on the just water body top layer often recorded, above factor cause the maximum shortcoming of buoy method be measure comparatively rough.
Therefore, necessaryly provide a kind of Portable Current Measurement device to solve the problems of the technologies described above.
Summary of the invention
The technical matters that the utility model solves is to provide a kind of Portable Current Measurement device, and it can obtain the flow velocity of water body fast, easily, and structure simple, be convenient for carrying.
For solving the problems of the technologies described above, the utility model adopts a kind of Portable Current Measurement device, and it comprises outer tube, is positioned at the pipe of described sleeve pipe and is positioned at the angle reading device at described outer tube top; Described outer tube is inverted T shape and is provided with transverse pipe and the vertical duct perpendicular to described transverse pipe, and described transverse pipe is communicated with vertical duct, and transverse pipe is provided with water inlet and water delivering orifice; Described interior pipe is L-type and is provided with vertical section and horizontal segment, and described vertical section is located in the vertical duct of described outer tube, and described horizontal segment is located in described transverse pipe and water inlet towards described transverse pipe extends.
As the further improvement of the technical program, described Portable Current Measurement device also comprises the 3rd valve being connected to the first valve on described outer tube and the second valve and being connected on described interior pipe, described first valve and the second valve lay respectively at described water inlet and water outlet, described 3rd valve is connected on the horizontal segment of described interior pipe, and the 3rd valve compared to described first valve closer to described water inlet.
As the further improvement of the technical program, be provided with angle scale and pointer in described angle reading device, described pointer remains sensing straight down, and described outer bushing surface is provided with angle index line.
Compared with prior art, the utility model Portable Current Measurement apparatus structure is simple, and portability is very good, is applicable to field flow measurement purposes, and simple to operate, can obtain the flow velocity of current fast and accurately, have very strong practicality.
[accompanying drawing explanation]
Fig. 1 is the structural representation of Portable Current Measurement device described in the utility model.
Fig. 2 is the using state schematic diagram of Portable Current Measurement device described in the utility model.
Fig. 3 is the principle schematic of the utility model Portable Current Measurement device when flow velocity is zero.
Fig. 4 is the principle schematic of the utility model Portable Current Measurement device when flow velocity is v.
[embodiment]
Refer to shown in Fig. 1, the utility model provides a kind of Portable Current Measurement device 100, comprises outer tube 10, is positioned at the pipe 20 of described sleeve pipe, the first valve 30 and the second valve 40 be connected on described outer tube 10, is connected to the 3rd valve 50 on described pipe 20 and is positioned at the angle reading device 60 at described outer tube 10 top.
The three-way pipe of described outer tube 10 in inverted T shape, it is provided with transverse pipe 11 and the vertical duct 12 perpendicular to described transverse pipe 11, described transverse pipe 11 is communicated with vertical duct 12, wherein, described transverse pipe 11 is provided with and is positioned at water inlet A in same level and water outlet B, described first valve 30 and the second valve 40 lay respectively at described water inlet A side and water outlet B side, are respectively used to the closure or openness controlling water inlet A and water outlet B.In addition, described outer tube 10 is transparent material, and its surface is provided with scale mark.
Described interior pipe 20 is in L-type, it is provided with vertical section 21 and horizontal segment 22, described vertical section 21 is located in the vertical duct 12 of described outer tube 10, described horizontal segment 22 is located in described transverse pipe 11 and water inlet A towards transverse pipe 11 extends, wherein, described 3rd valve 50 is connected on described horizontal segment 22, and compared to described first valve 30 closer to described water inlet A.Described interior pipe 20 and outer tube 10 are concentric pipe, are provided with gap between the two.
Be provided with angle scale and pointer in described angle reading device 60, described pointer is in sensing straight down all the time, and described outer bushing surface is provided with angle index line.When current surveying device 100 is put by inclination, the angle of current tilt or rotation can be demonstrated, as shown in Figure 2.
During the flow measurement of field, the utility model current surveying device 100 is positioned in river, if river flow is v, and makes the first valve 30, second valve 40 and the 3rd valve 50 all be held open state, by the aligning inflow direction, water inlet A side of outer tube 10.
When after the liquid level stabilizing in interior pipe 20 and outer tube 10, read the reading ω of current state inferior horn scale, be the angle of inclination that current surveying device 100 is current, then, close the first valve 30, second valve 40 and the 3rd valve 50 successively.
Finally, from river, take out current surveying device 100, and keep angle of inclination ω constant, read the fluid value in the interior fluid value h1 of the pipe 20 and fluid value h2(of outer tube 10 and described gap respectively), thus, obtaining interior pipe 20 with the liquid level difference formula of outer tube 10 is:
Δh=
------（1）
Shown in ginseng Fig. 3 and Fig. 4, the operation logic of the utility model current surveying device 100 is, when flow rate of water flow is zero, the liquid level in pipe flushes with the water surface in river; When flow rate of water flow is v, because the kinetic energy of Guan Zhongshui will be converted into potential energy, the liquid level in final pipe will raise Δ h, according to law of conservation of energy, and the function that liquid level lifting height Δ h is is variable with flow rate of water flow v.Be the water body of m for water inlet A place quality, not inserting at current surveying device 100 kinetic energy had before in water is
, when insertion water in and after liquid level stabilizing, the kinetic energy of this water body is all converted into potential energy, namely
=Δ hmg, can obtain v=
.Visible, the difference in height according to liquid level in pipe and the water surface can obtain water velocity.In addition, due to the impact of water body and tube wall, must carry out suitable correction to computing formula, the computing formula obtaining water velocity is:
v=
------（2）
Wherein, k is coefficient of Pitot tube, and it is between 0.99-1.01.
Now, the liquid level of formula (1) difference Δ h is substituted in formula (2), the flow velocity of current current can be obtained.
In sum, the utility model Portable Current Measurement device 100 structure is simple, easy to use, only need can calculate the flow velocity of current current according to intraluminal fluid face difference in height, very convenient, and small and exquisite structural design is more suitable for carrying with, and facilitates field exploration.
The above; it is only most preferred embodiment of the present utility model; not any pro forma restriction is done to the utility model; any those of ordinary skill in the art; do not departing under technical solutions of the utility model ambit; utilize the method content of above-mentioned announcement to make many possible variations and modification to technical solutions of the utility model, all belong to the scope of claims protection.
Claims (3)
1. a Portable Current Measurement device, is characterized in that, comprises outer tube, is positioned at the pipe of described sleeve pipe and is positioned at the angle reading device at described outer tube top; Described outer tube is inverted T shape and is provided with transverse pipe and the vertical duct perpendicular to described transverse pipe, and described transverse pipe is communicated with vertical duct, and transverse pipe is provided with water inlet and water delivering orifice; Described interior pipe is L-type and is provided with vertical section and horizontal segment, and described vertical section is located in the vertical duct of described outer tube, and described horizontal segment is located in described transverse pipe and water inlet towards described transverse pipe extends.
2. Portable Current Measurement device according to claim 1, it is characterized in that: described Portable Current Measurement device also comprises the 3rd valve being connected to the first valve on described outer tube and the second valve and being connected on described interior pipe, described first valve and the second valve lay respectively at described water inlet and water outlet, described 3rd valve is connected on the horizontal segment of described interior pipe, and the 3rd valve compared to described first valve closer to described water inlet.
3. Portable Current Measurement device according to claim 2, is characterized in that: be provided with angle scale and pointer in described angle reading device, described pointer remains sensing straight down, and described outer bushing surface is provided with angle index line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520775582.0U CN204989221U (en) | 2015-10-09 | 2015-10-09 | Portable current surveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520775582.0U CN204989221U (en) | 2015-10-09 | 2015-10-09 | Portable current surveying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204989221U true CN204989221U (en) | 2016-01-20 |
Family
ID=55123578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520775582.0U Expired - Fee Related CN204989221U (en) | 2015-10-09 | 2015-10-09 | Portable current surveying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204989221U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414788A (en) * | 2018-02-11 | 2018-08-17 | 河海大学 | A kind of open channel uniform flow horizontal direction multiple spot tachymeter device |
-
2015
- 2015-10-09 CN CN201520775582.0U patent/CN204989221U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414788A (en) * | 2018-02-11 | 2018-08-17 | 河海大学 | A kind of open channel uniform flow horizontal direction multiple spot tachymeter device |
| CN108414788B (en) * | 2018-02-11 | 2020-02-18 | 河海大学 | Horizontal direction multipoint velocimeter device for uniform flow of open channel |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20161009 |