CN218349596U - Flow measurement calibration device - Google Patents
Flow measurement calibration device Download PDFInfo
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- CN218349596U CN218349596U CN202222394003.0U CN202222394003U CN218349596U CN 218349596 U CN218349596 U CN 218349596U CN 202222394003 U CN202222394003 U CN 202222394003U CN 218349596 U CN218349596 U CN 218349596U
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Abstract
The utility model provides a survey flow calibration device, relate to survey flow equipment technical field, through set up first baffle and second baffle in testing the water tank, utilize first baffle and second baffle to separate into the water injection chamber with the liquid flow cavity, test chamber and overflow chamber, the liquid that gets into from the water inlet enters into the test chamber through the water injection chamber, because the income water yield is greater than the water yield, liquid in the test chamber can enter into the overflow chamber, make the liquid level height in the test chamber unchangeable, leak on the delivery port simulation dam facing, realize simulating high dam leakage environment, and area is littleer, the condition that the dam facing seepage can't be simulated to the traditional velocity of flow measurement method of having alleviated exists among the prior art, and the too big technical problem of whole equipment area.
Description
Technical Field
The utility model belongs to the technical field of the equipment technique of flow measurement and specifically relates to a flow measurement calibration device is related to.
Background
The acoustic flow measuring device is a flow velocity measuring device developed by using acoustics, and liquid flow velocity is calculated through Doppler frequency shift. The dam acoustic flow measurement equipment needs to be calibrated for flow velocity at present, and the detection accuracy of the dam acoustic flow measurement equipment is determined. The device needs to simulate the underwater leakage environment well and can quantitatively calculate the leakage amount.
According to the calibration method of the flow meter: in a still water detection groove with uniform cross section, an identification vehicle which runs linearly pulls a current meter at a plurality of stable speeds, the current meter fixedly arranged on a measuring rod is made to run in still water, the speed of the detection vehicle and the reading of the current meter are measured, and the calibration value of the current meter is obtained after the relationship is established between the two groups of data.
However, the above method cannot simulate the dam face leakage situation and requires a large working site.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a survey flow and mark school device to the condition that the dam facing seepage can't be simulated to the traditional velocity of flow measurement way that has existed among the prior art has been alleviated, and whole equipment area is too big technical problem.
The first aspect, the utility model provides a survey flow and mark school device, include: testing the water tank;
the testing water tank is internally provided with a liquid flowing chamber, and the liquid flowing chamber is provided with a first baffle and a second baffle so as to divide the liquid flowing chamber into a water injection cavity, a testing cavity and an overflow cavity which are communicated with each other;
the testing water tank is positioned at the bottom of the water injection cavity and is provided with a water inlet, the testing water tank is positioned at the bottom of the testing cavity and is provided with a water outlet, and the water inlet amount of the water inlet is larger than the water outlet amount of the water outlet, so that liquid in the testing cavity can overflow into the overflow cavity.
In an alternative embodiment of the method of the invention,
the flow measurement calibration device further comprises a detection component;
the detection component extends into the test cavity and is used for detecting the liquid outflow speed of the water outlet.
In an alternative embodiment of the method of the present invention,
the flow measurement calibration device also comprises a mounting component;
the mounting component is connected with the detection component and is configured to drive the detection component to move.
In an alternative embodiment of the method of the invention,
the mounting member comprises a first slide rail, a second slide rail and a connecting rod;
the first slide rail is provided with a first slide groove, the second slide rail is provided with a second slide groove, the first slide groove is perpendicular to the second slide groove, one end of the connecting rod penetrates through the first slide groove and the second slide groove, and the other end of the connecting rod is connected with the detection component, so that the connecting rod can move along the first slide groove and the second slide groove.
In an alternative embodiment of the method of the invention,
the mounting member further comprises a first rotating member, a second rotating member, and a third rotating member;
the first rotating part and the second rotating part are both L-shaped, the transverse edge of the first rotating part is connected with the end part of the connecting rod, the vertical edge of the first rotating part is rotatably connected with one edge of the second rotating part, the other edge of the second rotating part is rotatably connected with the third rotating part, and the third rotating part is used for fixing the detection component.
In an alternative embodiment of the method of the invention,
the connecting rod sets up to the telescopic link, the telescopic link configuration is to be can stretch out and draw back along self axis direction.
In an alternative embodiment of the method of the present invention,
the flow measuring and calibrating device also comprises a water tank and a water pump;
the water pump is installed in the water tank, is connected with the water inlet through a pipeline and is used for pumping liquid in the water tank into the water injection cavity.
In an alternative embodiment of the method of the present invention,
the flow measurement calibration device also comprises a water outlet section control module;
the water outlet section control module is arranged at the water outlet and used for adjusting the outflow area of the water outlet.
In an alternative embodiment of the method of the present invention,
the flow measurement calibration device also comprises a flow measurement module;
the flow measuring module is communicated with the water outlet through a water outlet pipeline and is used for detecting the flow of liquid flowing out of the water outlet.
In an alternative embodiment of the method of the invention,
the flow measurement calibration device also comprises a flow control module;
the flow control module is installed on the water outlet pipeline.
The utility model provides a survey flow calibration device, through set up first baffle and second baffle in testing the water tank, utilize first baffle and second baffle to separate into the water injection chamber with the liquid flow cavity, test chamber and overflow chamber, the liquid that gets into from the water inlet enters into the test chamber through the water injection chamber, because the volume of intaking is greater than the water yield, liquid in the test chamber can enter into the overflow chamber, make the liquid level height in the test chamber unchangeable, leak on the delivery port simulation dam facing, realize simulating high dam leakage environment, and area is littleer, the condition that the dam facing seepage can't be simulated to the traditional velocity of flow measurement method of having alleviated existence among the prior art, and the too big technical problem of whole equipment area.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an internal structure of a test water tank in a flow measurement calibration device provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a test water tank in the flow measurement calibration device provided by the embodiment of the present invention;
fig. 3 is a schematic view of an internal structure of a test water tank in another embodiment of the flow measurement calibration device provided in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a test water tank in another embodiment of the flow measurement calibration device provided by the embodiment of the present invention;
fig. 5 is a schematic view of an overall structure of a flow measurement calibration device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a mounting member in the flow measurement calibration apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a test water tank with a constant flow water pipe in the flow measuring calibration device provided by the embodiment of the present invention.
Icon: 100-a test water tank; 110-a first baffle; 120-a second baffle; 130-a water injection cavity; 140-a test chamber; 150-an overflow chamber; 160-water inlet; 170-water outlet; 180-an overflow port; 200-a detection member; 300-a mounting member; 310-a first slide rail; 320-a second slide rail; 330-connecting rod; 340-a first rotating member; 350-a second rotating member; 360-a third rotating member; 400-a water tank; 500-a water pump; 600-water section control module; 700-flow measurement module; 710-an outlet conduit; 800-flow control module; 900-constant flow water pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
According to the calibration method of the existing flow meter: in a still water detection groove with uniform cross section, an identification vehicle which runs linearly pulls a current meter at a plurality of stable speeds, the current meter fixedly arranged on a measuring rod is made to run in still water, the speed of the detection vehicle and the reading of the current meter are measured, and the calibration value of the current meter is obtained after the relationship is established between the two groups of data. This method does not simulate the dam face leakage situation and requires a large working site. And is therefore not suitable for calibration of the apparatus.
In view of this, the flow measurement calibration device provided in this embodiment includes: a test water tank 100; the test water tank 100 has a liquid flow chamber therein, which is provided with a first barrier 110 and a second barrier 120 to divide the liquid flow chamber into a water injection chamber 130, a test chamber 140, and an overflow chamber 150, which are communicated with each other; the test water tank 100 is provided with a water inlet 160 at the bottom of the water filling chamber 130, the test water tank 100 is provided with a water outlet 170 at the bottom of the test chamber 140, and the water inlet amount of the water inlet 160 is greater than the water outlet amount of the water outlet 170, so that the liquid in the test chamber 140 can overflow into the overflow chamber 150.
The flow measurement calibration device provided by the embodiment comprises a first baffle 110 and a second baffle 120 which are arranged in a test water tank 100, a liquid flowing chamber is divided into a water injection chamber 130, a test chamber 140 and an overflow chamber 150 by the first baffle 110 and the second baffle 120, liquid entering from a water inlet 160 enters the test chamber 140 through the water injection chamber 130, and the liquid entering from the test chamber 140 can enter the overflow chamber 150 because the water inlet amount is larger than the water outlet amount, so that the liquid level in the test chamber 140 is unchanged, a water outlet 170 simulates a leak on a dam surface, a simulated high dam leakage environment is realized, the occupied area is smaller, the problem that the dam surface leakage cannot be simulated by a traditional flow rate measurement method in the prior art is solved, and the technical problem that the occupied area of the whole device is too large is solved.
Regarding the structure and shape of the test water tank 100, specifically:
the test water tank 100 is of a box-type structure, a liquid flow cavity is formed inside the test water tank 100, a first baffle 110 and a second baffle 120 are arranged in the test water tank 100, the first baffle 110 and the second baffle 120 can be set to be vertical plates as shown in fig. 1 and fig. 2, when the first baffle 110 and the second baffle 120 are vertical plates, the first baffle 110 and the second baffle 120 are arranged oppositely, a water injection cavity 130 is formed between the first baffle 110 and the inner wall of the test water tank 100, a test cavity 140 is formed between the first baffle 110 and the second baffle 120, a spillway cavity 150 is formed between the second baffle 120 and the inner wall of the test water tank 100, liquid enters the water injection cavity 130 from a water inlet 160, the liquid level in the water injection cavity 130 gradually rises and enters the test cavity 140, the liquid level in the test cavity 140 gradually rises and flows into the spillway cavity 150 because the water inlet amount of the water inlet 160 is always larger than the water outlet amount of the water outlet 170, a bottom of the spillway cavity 150 is provided with a spillway opening 180, the liquid level in the test cavity 140 is always located at the height of the test dam cavity 140, and the spillway cavity can simulate the seepage situation of a water outlet, and the highest water outlet 170.
As shown in fig. 3 and 4, the first baffle 110 and the second baffle 120 may also be cylindrical baffles, the second baffle 120 is sleeved outside the first baffle 110, an overflow cavity 150 is formed between the second baffle 120 and the inner wall of the test water tank 100, a water injection cavity 130 is formed between the second baffle 120 and the first baffle 110, and the first baffle 110 encloses to form a test cavity 140, so as to simulate the dam surface leakage.
It should be noted that the sound-absorbing material covers the periphery of the inner wall forming the test chamber 140, so as to reduce the reverberation of the underwater sound in the water tank 400, reduce the interference caused by the over-small size of the water tank 400, and create a good test hydrological condition.
In addition, as shown in fig. 7, a constant flow water pipe 900 may be further provided, the constant flow water pipe 900 is U-shaped and is disposed in the test cavity 140, the test water tank 100 is filled with liquid, and a sound absorbing material is covered around the test water tank to provide a test environment for the flow measurement device, the constant flow water pipe 900 provides a constant water flow, and a reference standard is provided for calibration of the flow measurement device.
Regarding the structure and shape of the mounting member 300, specifically:
as shown in fig. 5 and 6, the mounting frame includes a first slide rail 310, a second slide rail 320, a connecting rod 330, a first rotating member 340, a second rotating member 350, and a third rotating member 360, the first slide rail 310 and the second slide rail 320 are disposed perpendicular to each other, the first slide rail 310 and the second slide rail 320 are disposed in a stacked manner, one end of the connecting rod 330 passes through the first sliding groove and the second sliding groove, and the connecting rod 330 moves along the first sliding groove and the second sliding groove, so that the detecting member 200 can move in a translational manner.
The first rotating part 340 and the second rotating part 350 are both set to be L-shaped, the other end of the connecting rod 330 is hinged with the horizontal edge of the first rotating part 340, the detection component 200 is rotated in the first direction, the vertical edge of the first rotating part 340 is hinged with the second rotating part 350, the detection component 200 is rotated in the second direction, the other edge of the second rotating part 350 is hinged with the third rotating part 360, the detection component 200 is rotated in the third direction, the first direction, the second direction and the third direction are perpendicular to each other, the detection component 200 can rotate in all directions, and the speed measuring position can be freely changed.
Regarding the water tank 400 and the water pump 500, specifically:
the water pump 500 is installed in the water tank 400, the water tank 400 is disposed under the test water tank 100, the liquid flowing out from the overflow port 180 enters the water tank 400, the water pump 500 is communicated with the water inlet 160 through a connection pipe, and the liquid in the water tank 400 is pumped by the water pump 500 and is transferred to the water injection chamber 130 through the connection pipe.
Regarding the structure and shape of the water section control module 600, specifically:
the water section control module 600 includes a driving motor and a shielding plate, the shielding plate is shielded at the water outlet 170, and the driving motor drives the shielding plate to move, so that the water outlet area of the water outlet 170 can be adjusted.
The flow rate measurement module 700 specifically includes:
the outlet 170 is in communication with the outlet conduit 710, the flow measurement module 700 is mounted on the outlet conduit 710, and the flow measurement module 700 may be configured as a flow meter that detects the flow of fluid in the water conduit 710.
Regarding the flow control module 800, specifically:
the flow control module 800 may be specifically configured as a control valve, and is installed on the water outlet pipe 710, and the control valve controls the flow of the water outlet pipe 710.
The flow measurement calibration device provided by this embodiment fixes the detection component 200 to be calibrated on the dark turning component, adjusts the detection component 200 to a required posture, adjusts the section control module of the water outlet 170, adjusts the flow control module 800 to a required flow after the flow velocity is stabilized, and completes calibration after conversion by the flow measurement module 700. According to the Bernoulli continuity equation, the flow L = Sv can be obtained, the flow L is obtained by the flow measuring module 700, the sectional area S of the water outlet 170 can be obtained by the sectional area control module of the water outlet 170, and the average flow speed v of the water outlet 170 can be obtained through calculation.
In practical application, the DN15 flow meter is used for flow timing, and the flow velocity range of the flow meter is 0.094-14.147m/s (0.06-9 m) 3 When the device is used for entry test, the caliber of a water outlet 170 with the diameter of 0.45m is selected, the test range is controlled to be 0.010-1.572m/s, the test precision is controlled to be within 1cm, and the flow rate upper time can be stabilized at a value by adjusting the flow control module 800, so that the test requirement is met.
Because no device capable of simulating a high dam leakage environment and measuring flow exists at present, the flow measuring calibration device provided by the embodiment can facilitate calibration and calibration of dam surface surveying equipment; a large still water detection groove used in flow calibration is not needed, the occupied area is small, and the leakage environment can be well simulated; the calibration of the small flow working condition can be simulated by only using one flowmeter; the arrangement of the mounting member 300 and the probe member 200 is such that the probe member 200 has six degrees of freedom, which can meet different attitudes of the surveying equipment under water; sound absorption materials are arranged around the test water tank 100, so that echo in water can be reduced; the liquid level is stable, the water inlet speed is slow, and good hydrological conditions are provided.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.
Claims (10)
1. A flow measurement calibration device, comprising: a test water tank (100);
the testing water tank (100) is internally provided with a liquid flowing chamber which is provided with a first baffle (110) and a second baffle (120) so as to divide the liquid flowing chamber into a water injection cavity (130), a testing cavity (140) and an overflow cavity (150) which are communicated with each other;
the testing water tank (100) is provided with a water inlet (160) at the bottom of the water injection cavity (130), the testing water tank (100) is provided with a water outlet (170) at the bottom of the testing cavity (140), and the water inlet amount of the water inlet (160) is larger than the water outlet amount of the water outlet (170), so that the liquid in the testing cavity (140) can overflow into the overflow cavity (150).
2. The lateral flow calibration device of claim 1,
the flow measuring calibration device further comprises a detection component (200);
the detection component (200) extends into the test cavity (140), and the detection component (200) is used for detecting the liquid outflow speed of the water outlet (170).
3. The lateral flow calibration device according to claim 2,
the flow measurement calibration device further comprises a mounting member (300);
the mounting member (300) is connected with the detection member (200), and the mounting member (300) is configured to drive the detection member (200) to move.
4. The flow measurement calibration device of claim 3,
the mounting member (300) comprises a first slide rail (310), a second slide rail (320) and a connecting rod (330);
the first slide rail (310) is provided with a first slide groove, the second slide rail (320) is provided with a second slide groove, the first slide groove and the second slide groove are perpendicularly arranged, one end of the connecting rod (330) penetrates through the first slide groove and the second slide groove, and the other end of the connecting rod (330) is connected with the detection member (200) so that the connecting rod (330) can move along the first slide groove and the second slide groove.
5. The lateral flow calibration device according to claim 4,
the mounting member (300) further comprises a first rotating member (340), a second rotating member (350), and a third rotating member (360);
the first rotating piece (340) and the second rotating piece (350) are both set to be L-shaped, the transverse edge of the first rotating piece (340) is connected with the end part of the connecting rod (330), the vertical edge of the first rotating piece (340) is connected with one edge of the second rotating piece (350) in a rotating mode, the other edge of the second rotating piece (350) is connected with the third rotating piece (360) in a rotating mode, and the third rotating piece (360) is used for fixing the detection component (200).
6. A lateral flow calibration device according to claim 5,
the connecting rod (330) is arranged to be a telescopic rod, and the telescopic rod is configured to be capable of stretching along the axis direction of the telescopic rod.
7. A lateral flow calibration device according to claim 3,
the flow measuring and calibrating device also comprises a water tank (400) and a water pump (500);
the water pump (500) is installed in the water tank (400), the water pump (500) is connected with the water inlet (160) through a pipeline, and the water pump (500) is used for pumping the liquid in the water tank (400) into the water injection cavity (130).
8. The lateral flow calibration device of claim 7,
the flow measurement calibration device also comprises a water outlet section control module (600);
the water outlet section control module (600) is installed at the water outlet (170), and the water outlet section control module (600) is used for adjusting the outflow area of the water outlet (170).
9. The lateral flow calibration device of claim 8,
the flow measurement calibration device also comprises a flow measurement module (700);
the flow measuring module (700) is communicated with the water outlet (170) through a water outlet pipeline (710), and the flow measuring module (700) is used for detecting the liquid flow flowing out of the water outlet (170).
10. The lateral flow calibration device of claim 9,
the flow measurement calibration device also comprises a flow control module (800);
the flow control module (800) is mounted on the water outlet pipeline (710).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222394003.0U CN218349596U (en) | 2022-09-08 | 2022-09-08 | Flow measurement calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222394003.0U CN218349596U (en) | 2022-09-08 | 2022-09-08 | Flow measurement calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218349596U true CN218349596U (en) | 2023-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222394003.0U Active CN218349596U (en) | 2022-09-08 | 2022-09-08 | Flow measurement calibration device |
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| CN (1) | CN218349596U (en) |
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- 2022-09-08 CN CN202222394003.0U patent/CN218349596U/en active Active
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