CN217325531U - High-precision multifunctional dam foundation uplift pressure monitoring device - Google Patents

Abstract

The utility model discloses a multi-functional dam foundation uplift pressure monitoring devices of high accuracy, trade the original tee bend device of corridor bottom plate department for the cross device, then install one set of reading device additional in the right side, not only can accurately read stifle department have the interior water column height of pressure measuring pipe of overflow, and when the interior liquid level of pressure measuring pipe is higher than manometer central elevation, right side reading device can carry out the check to the reading of manometer, be favorable to checking the stability of automatic survey value, the dam foundation uplift pressure distribution condition is mastered to reliability and accuracy. And the blank cap can be directly opened for the piezometer tube without overflow at the blank cap, and the probe of the electric water level meter is placed in the piezometer tube, so that the height of the water column in the piezometer tube can be more conveniently measured under the condition of not disturbing the osmometer. The manual comparison and measurement work efficiency is greatly improved through transformation, and meanwhile, the measurement precision is improved.

Description

High-precision multifunctional dam foundation uplift pressure monitoring device

Technical Field

The utility model relates to a dam foundation parameter monitoring facilities field specifically is a multi-functional dam foundation uplift pressure monitoring devices of high accuracy.

Background

The pressure measuring pipe is a main monitoring means for monitoring the uplift pressure of the dam foundation, can directly reflect the uplift pressure change condition of the dam foundation, and plays a vital role in mastering the uplift pressure distribution condition of the dam foundation. According to the operation condition, part of the current pressure measuring pipes belong to pressureless pipes, and according to the requirements of technical standard for monitoring safety of concrete dams (GB/T51416-2020), the pipe orifice device is set according to the measurement mode of the water level of the pressure measuring pipe and the requirements suitable for pressureless, pressured and automatic monitoring. All consider with pressing the pipe during dragon opening power station engineering design, the manometer has all been installed to all pressure-measuring pipes, simultaneously for responding the automatic requirement of dam safety monitoring, contrasts with artifical observation data, remedies artifical observation frequency not enough, buries the osmometer underground in the pressure-measuring pipe hole so that monitor data's automation is gathered, and the no pressure pipe that appears in to the actual operation process sets up the manual observation means. When the water level of the non-pressure measuring pipe is measured, the pressure measuring pipe without overflow at the blank cap (the water level in the pressure measuring pipe is positioned below the blank cap) is found, the height of a water column can be measured by an electric water level meter, and the measurement result is close to the automatic measurement value; the stifle department has the piezometric pipe of overflow (the water level is between manometer central elevation and stifle in the piezometric pipe), and the water column height more than its stifle can only the eye observation, and the measuring result has great deviation with the automated survey value, and the authenticity of data is relatively poor, is unfavorable for checking the stability, the reliability of automated survey value, and dam foundation uplift pressure distribution condition also can not accurately be mastered.

Therefore, the current piezometric tube often has a plurality of defects in practical use:

(1) the blank cap, the cable and the osmometer are connected into a whole, when the blank cap is lifted, the osmometer can be lifted to a certain height, but the osmometer cannot be placed back to the original position due to serious adhesion of calcifications on the pressure measuring pipe, so that the automatic data has errors;

(2) the height of the water column between the blank cap and the central elevation of the pressure gauge can be estimated only by observing the water yield of the screwed-off plug, the measurement error is extremely large, the measurement result and the automatic measured value have large deviation, the stability and the reliability of the automatic measured value are not easy to check and correct, the uplift pressure distribution condition of the dam foundation of the dam cannot be accurately mastered, the operation is inconvenient, and the measurement efficiency is low;

(3) when the height of the water column exceeds the central elevation of the pressure gauge, the height of the water column in the pressure measuring pipe can be read only through the pressure gauge, and the reading accuracy of the pressure gauge cannot be checked regularly.

SUMMERY OF THE UTILITY MODEL

For solving the not enough of above-mentioned prior art existence, the inventor has now provided better usefulness through research and development design, and is more practical, more reliable, more accurate dam foundation uplift pressure monitoring devices, specific, the utility model discloses a realize like this:

the utility model provides a multi-functional dam foundation uplift pressure monitoring devices of high accuracy, is including installing the piezometer pipe in corridor bottom plate below, installs the osmometer in the piezometer pipe, still includes: the pressure measuring pipe exposed above the gallery bottom plate is provided with a four-way pipe, the upper end structure of the four-way pipe is a cable outlet blank cap and a first blank cap of a y-shaped structure, a cable passes through the cable outlet blank cap and is connected to a osmometer, the left end of the four-way pipe is connected with a left overflow pressure measuring structure, the right end of the four-way pipe is connected with a right overflow pressure measuring structure, and the left overflow pressure measuring structure comprises a galvanized pipe and a galvanized pipe which are vertically arranged, and the galvanized pipe is respectively connected with a pressure gauge and a second blank cap and a water tap through a three-way pipe; the right overflow pressure measuring structure comprises a hose and a transparent pipe connected with the hose, the transparent pipe is vertically installed, a third blank cap is arranged at the top of the transparent pipe, a graduated scale is installed beside the transparent pipe, and a floating ball is installed in the transparent pipe.

Furthermore, a pointer track is vertically arranged on one side of the graduated scale along the graduated scale, the reading pointer is sleeved on the pointer track in a sliding mode on the pointer track, and the direction of the reading pointer is parallel to the scales on the graduated scale and points to the transparent tube during sliding.

Furthermore, the top end portion of the transparent pipe is fixedly provided with a transversely extending installation rod, the end head of the installation rod is provided with a rotating ball, the rotating ball is placed in a fixedly installed spherical damping holder, the vertical placing angle of the transparent pipe can be adjusted manually, and the front face of the installation rod is provided with a universal level gauge.

Furthermore, the hose gradually inclines downwards, and the lowest end of the transparent pipe is lower than the height of the four-way pipe.

Furthermore, the floating ball is a colored floating ball.

The utility model discloses a theory of operation and beneficial effect introduce:

(1) the spherical damping cradle head can enable the additional transparent pipe to rotate in any direction, and the transparent pipe can always keep a plumb state when a book is read by measurement each time by combining the universal level arranged on the surface of the spherical damping cradle head;

(2) the floating ball is added in the transparent tube, so that a measurer can quickly find the position of the liquid level, and the reading pointer additionally arranged on the right side of the transparent tube can ensure that the reading position is in the position of the liquid level, thereby avoiding errors caused by sight line deviation during manual reading;

(3) the utility model discloses a reading device of pressure-measuring pipe can full range measurement dam foundation uplift pressure, when the water column height in the pressure-measuring pipe is less than h in the attached drawing, can open the first stifle of four-way pipe upper end, uses the electricity to survey the water column height in the pressure-measuring pipe of dam foundation by the water level meter; when the height of the water column in the pressure measuring pipe is between the height H and the height H of the attached drawing, the height of the water column in the dam foundation pressure measuring pipe can be read through a reading device additionally arranged on the right side, when the height of the water column in the pressure measuring pipe is higher than the height H, the height of the water column in the dam foundation pressure measuring pipe can be read through a pressure gauge, and meanwhile, whether the reading of the pressure gauge is correct or not can be checked through comparison with the reading of a device additionally arranged on the right side;

(4) the upper end structure of the four-way pipe is designed into a y shape, so that manual comparison and measurement can be carried out without disturbing the osmometer, and the situation that the osmometer cannot be placed at the original position after being lifted in the original comparison and measurement is avoided;

the utility model discloses a dam foundation uplift pressure measuring device when having improved artifical ratio and having surveyed work efficiency and measurement accuracy, also can examine stability, the reliability of school's automated measurement value, is favorable to the accurate dam foundation uplift pressure distribution condition of mastering.

Drawings

FIG. 1 is a schematic structural diagram of a dam foundation uplift pressure monitoring device in the prior art;

fig. 2 is a schematic structural view of the improved dam foundation uplift pressure monitoring device of the present invention;

fig. 3 is a schematic view of the three-dimensional structure of the dam foundation uplift pressure monitoring device of the utility model;

wherein: 1-piezometer tube, 2-osmometer, 3-four-way tube, 4-cable outlet cover, 5-first cover, 6-three-way tube, 7-pressure gauge, 8-second cover, 9-water tap, 10-flexible tube, 11-transparent tube, 12-third cover, 13-graduated scale, 14-floating ball, 15-pointer track, 16-reading pointer, 17-mounting rod, 18-rotating ball, 19-spherical damping platform, 20-universal level meter and 21-galvanized tube.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings 2. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Example 1: the utility model provides a multi-functional dam foundation uplift pressure monitoring device of high accuracy, is including installing piezometer tube 1 in corridor bottom plate below, installs osmometer 2 in the piezometer tube 1, still includes: the pressure measuring pipe 1 exposed above the gallery bottom plate is provided with a four-way pipe 3, the upper end structure of the four-way pipe 3 is a Y-shaped cable outlet blank cap 4 and a first blank cap 5, a cable penetrates through the cable outlet blank cap 4 and is connected to a osmometer 2, the left end of the four-way pipe 3 is connected with a left overflow pressure measuring structure, the right end of the four-way pipe 3 is connected with a right overflow pressure measuring structure, and the left overflow pressure measuring structure comprises a galvanized pipe 21 which is vertically arranged, and the galvanized pipe 21 is respectively connected with a pressure gauge 7, a second blank cap 8 and a water tap 9 through a three-way pipe 6; the right overflow pressure measuring structure comprises a hose 10 and a transparent pipe 11 connected with the hose 10, the transparent pipe 11 is vertically installed, a third blank cap 12 is arranged at the top of the transparent pipe 11, a graduated scale 13 is installed beside the transparent pipe 11, and a floating ball 14 is installed in the transparent pipe 11.

In actual use: the four-way pipe 3 is connected with the dam foundation piezometer pipe 1, and the compactness is required to be paid attention to during connection so as to prevent water seepage; the upper end of the four-way pipe 3 is connected with a first blank cap 5 and a cable outlet blank cap 4 through a galvanized pipe 21; the left end of the four-way pipe 3 is connected with an elbow through a galvanized pipe 21, the upper end of the elbow is connected with the lower end of the galvanized pipe 21, the upper end of the galvanized pipe 21 is connected with the lower end of a three-way pipe 6, the upper end of the three-way pipe 6 is connected with the lower end of the galvanized pipe 21, and further, the upper end of the galvanized pipe 21 is connected with a water tap 9 and a second blank cap 8;

the right end of the three-way pipe 6 is connected with the left end of a second elbow, the upper end of the second elbow is connected with a galvanized pipe 21, and the upper end of the galvanized pipe 21 is connected with a pressure gauge 7; the right end of the four-way pipe 3 is connected with a hose 10, further, the hose 10 is connected with a second elbow which is connected with a transparent pipe 11, a floating ball 14 with the diameter slightly smaller than the pipe diameter of the transparent pipe 11 is added into the transparent pipe 11, and the floating ball 14 can be coated with colored waterproof paint or materials with colors, such as red, orange, yellow and blue and other obvious colors.

Preferably, a pointer track 15 is vertically installed along the scale 13 at one side of the scale 13, and a reading pointer 16 is slidably mounted on the pointer track 15 in such a manner that the reading pointer 16 is slid on the pointer track 15, and the direction of the reading pointer 16 is parallel to the scale on the scale 13 and points to the transparent tube 11. A pointer track 15 is arranged on the wall surface of the corridor, a reading pointer 16 is arranged on the pointer track 15, the reading pointer 16 is ensured to be horizontal when the reading pointer is arranged, and when the reading pointer 16 is used, the reading pointer 16 slides to be aligned with the bottom position of a floating ball 14, so that the current liquid level position can be conveniently and rapidly read;

furthermore, a transversely extending mounting rod 17 is fixedly mounted at the top end of the transparent tube 11, a rotating ball 18 is arranged at the end of the mounting rod 17, the rotating ball 18 is placed in a fixedly mounted spherical damping pan-tilt 19, and the spherical damping pan-tilt 19 has a screwing function (not marked in the figure) and can be screwed or loosened manually; the hanging angle of the transparent tube 11 can be adjusted manually, and a universal level 20 is mounted on the front surface of the mounting rod 17. So as to more accurately identify the height of the liquid level, the upper end of the transparent tube 11 is fixed at the tail end of the spherical damping pan-tilt 19; fixing the spherical damping holder 19 on the wall surface of the gallery, and additionally installing a universal level gauge 20 at the position close to the outer side; adjusting the damping holder to center the bubble in the universal level gauge so as to ensure that the transparent tube 11 is vertical; the graduated scale 13 is installed on the wall surface of the gallery, and the vertical state of the graduated scale is ensured during installation. When the universal level meter is used, the universal level meter 20 is matched for use, the universal level meter 20 is observed to be adjusted to be in a horizontal state, the mounting rod 17 where the universal level meter 20 is located is perpendicular to the transparent tube 11, namely the transparent tube 11 is kept in a vertical state in the current state, reading is carried out, an accurate value can be obtained, and the flexible tube 10 at the bottom provides a movable possibility in the adjusting process; the hose 10 is gradually inclined downwards, and the lowest end of the transparent pipe 11 is lower than the height of the four-way pipe 3.

The reading device of the pressure measuring pipe 1 can measure the uplift pressure of the dam foundation in a full-range manner, when the height of a water column in the pressure measuring pipe 1 is lower than h in the attached drawing, the first blank cap 5 at the upper end of the four-way pipe 3 can be opened, and the height of the water column in the pressure measuring pipe 1 of the dam foundation is measured by using the electric water level measuring meter; when the height of the water column in the pressure measuring pipe 1 is between the height H and the height H of the attached drawing, the height of the water column in the dam foundation pressure measuring pipe 1 can be read through the reading device additionally arranged on the right side, when the height of the water column in the pressure measuring pipe 1 is higher than the height H, the height of the water column in the dam foundation pressure measuring pipe 1 can be read through the pressure gauge 7, and meanwhile, whether the reading of the pressure gauge 7 is correct or not can be checked through comparison with the reading of the device additionally arranged on the right side.

The original tee bend device of corridor bottom plate department is changed for the cross device to this embodiment, then installs one set of reading device additional in the right side, not only can accurately read stifle department have the interior water column height of pressure-measuring pipe 1 of overflow, and when liquid level was higher than manometer 7 central elevation in pressure-measuring pipe 1, the reading of manometer 7 can be checked to right side reading device, is favorable to checking the stability, the reliability and the accurate dam foundation uplift pressure distribution condition of automated measurement value. And the stifle can also be directly opened to the pressure-measuring pipe 1 that does not have the overflow of stifle department, puts into pressure-measuring pipe 1 with the electricity and surveys the fluviograph probe, under the condition that does not disturb osmometer 2, the more convenient measurement pressure-measuring pipe 1 in the water column height. The manual comparison and measurement work efficiency is greatly improved through modification, and meanwhile, the measurement precision is improved.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modifications, equivalents, improvements and the like which are made without departing from the spirit and scope of the present invention should be considered within the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims (6)

1. The utility model provides a multi-functional dam foundation uplift pressure monitoring device of high accuracy, is including installing piezometer pipe (1) in corridor bottom plate below, installs osmometer (2) in piezometer pipe (1), and its characterized in that still includes: a four-way pipe (3) is arranged on a pressure measuring pipe (1) exposed above the gallery bottom plate, the upper end structure of the four-way pipe (3) is a cable outlet blank cap (4) and a first blank cap (5) with a y-shaped structure, a cable passes through the cable outlet blank cap (4) and is connected to a osmometer (2), the left end of the four-way pipe (3) is connected with a left overflow pressure measuring structure, the right end of the four-way pipe (3) is connected with a right overflow pressure measuring structure,

the left overflow pressure measuring structure comprises a galvanized pipe (21) which is vertically arranged, and the galvanized pipe (21) is respectively connected with a pressure gauge (7), a second blank cap (8) and a water tap (9) through a three-way pipe (6);

the right overflow pressure measuring structure comprises a hose (10) and a transparent pipe (11) connected with the hose (10), the transparent pipe (11) is vertically installed, a third blank cap (12) is arranged at the top of the transparent pipe (11), a graduated scale (13) is installed beside the transparent pipe (11), and a floating ball (14) is installed in the transparent pipe (11).

2. Dam foundation uplift pressure monitoring device according to claim 1, characterized in that, on one side of the graduated scale (13), a pointer track (15) is vertically installed along the graduated scale (13), a reading pointer (16) is sleeved on the pointer track (15) in a manner of sliding on the pointer track (15), and the direction of the reading pointer (16) is parallel to the scale on the graduated scale (13) and points to the transparent tube (11) during sliding.

3. The dam foundation uplift pressure monitoring device according to claim 1 or 2, wherein a transversely extending mounting rod (17) is fixedly mounted at the top end of the transparent pipe (11), a rotating ball (18) is arranged at the end of the mounting rod (17), the rotating ball (18) is placed in a fixedly mounted spherical damping pan head (19), the vertical angle of the transparent pipe (11) can be adjusted manually, and a universal level gauge (20) is mounted on the front surface of the mounting rod (17).

4. A dam foundation uplift pressure monitoring device according to claim 3, characterized in that the hose (10) is gradually inclined downwards, the lowest end of the transparent pipe (11) being lower than the height of the four-way pipe (3).

5. Dam foundation uplift pressure monitoring device according to claim 1, characterized in that the scale (13) is aligned with the top of a transparent tube (11).

6. The dam foundation uplift pressure monitoring device according to claim 3, wherein the floating ball (14) is a colored floating ball (14).

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