Dam foundation piezometric tube orifice device

Abstract

The utility model relates to the technical field of piezometric tubes, and discloses a dam foundation piezometric tube orifice device which comprises a piezometric tube body, a transverse tube fixedly communicates with the piezometric tube body, a vertical tube fixedly communicates with one end, away from the piezometric tube body, of the transverse tube, a faucet fixedly communicates with the upper end of the vertical tube, an extension tube fixedly communicates with the vertical tube, and the extension tube is fixedly communicated with a water outlet. A pressure gauge is fixedly installed at the end, away from the vertical pipe, of the extension pipe, an osmometer is installed in the pressure measuring pipe body, and a cable head is externally connected to the osmometer. The structure of the pipe orifice device is simplified, the cost is reduced, the measurement precision and the stable operation of the system are improved, the height of any water column in the pressure measurement pipe can be measured, the stability and reliability of automatic measurement values can be calibrated, the uplift pressure distribution condition of a dam foundation can be accurately mastered, and the working efficiency is improved. Materials are common and easy to purchase, assembly and installation are easy, monitoring is convenient, manpower is saved, monitoring types are multiple, and checking is convenient.

Description

Technical Field

[0001] The present application belongs to the technical field of pressure measuring tubes, and in particular, relates to a pipe orifice device for a dam foundation pressure measuring tube. Background Art

[0002] The dam foundation pressure gauge nozzle device is mainly used to monitor the seepage pressure and water level of the dam foundation. It can directly or indirectly measure the water pressure at different positions in the dam foundation, provide key data for evaluating the stability of the dam body, help understand the seepage conditions of the dam foundation, determine whether there are abnormal seepage channels, and promptly discover possible hidden dangers of seepage damage.

[0003] The existing dam foundation pressure gauge pipe orifice device has a complex structure and high use cost, which is not conducive to accurately grasping the uplift pressure distribution of the dam foundation, and cannot measure any water head in the pressure gauge pipe and calibrate the automatic measurement value. Utility Model Content

[0004] The utility model aims to solve the above-mentioned problem and proposes a dam foundation pressure measuring tube orifice device.

[0005] In order to achieve the above purpose, this application adopts the following technical solutions:

[0006] A dam foundation pressure measuring tube pipe orifice device comprises a pressure measuring tube body, the pressure measuring tube body is fixedly connected with a horizontal tube, the end of the horizontal tube away from the pressure measuring tube body is fixedly connected with a vertical tube, the upper end of the vertical tube is fixedly connected with a faucet, the vertical tube is fixedly connected with an extension tube, the end of the extension tube away from the vertical tube is fixedly provided with a pressure gauge, an osmometer is installed in the pressure measuring tube body, the osmometer is electrically connected to a cable, and an outlet pipe joint for extending the cable is fixedly installed on the tube wall of the pressure measuring tube body.

[0007] Preferably, a steel pipe cap is fixedly mounted on the upper end of the pressure measuring tube body.

[0008] Preferably, the horizontal pipe and the vertical pipe are fixedly connected via an elbow joint.

[0009] Preferably, the vertical pipe and the extension pipe are fixedly connected via a three-way joint.

[0010] Preferably, the pressure measuring tube body, horizontal tube, vertical tube and extension tube are all galvanized steel tubes.

[0011] Preferably, a valve is installed on the transverse pipe.

[0012] Compared with the prior art, the present application provides a dam foundation pressure measuring tube orifice device, which has the following beneficial effects:

[0013] The dam foundation pressure measuring tube nozzle device simplifies the nozzle device structure while reducing costs and improving measurement accuracy and stable operation of the system through the pressure measuring tube body, horizontal tube, vertical tube, faucet, extension tube, pressure gauge, piezometer, cable, outlet pipe joint, steel pipe cap, elbow joint, three-way joint and valve. It can also measure the height of any water column in the pressure measuring tube and calibrate the stability and reliability of the automatic measurement value, which is conducive to accurately grasping the uplift pressure distribution of the dam foundation. The material is common and easy to purchase, the assembly is simple and easy to install, the monitoring is convenient and labor-saving, the monitoring types are diverse, and the verification is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a dam foundation pressure measuring tube orifice device proposed in this application.

[0015] In the figure: 1. pressure measuring tube body; 2. horizontal pipe; 3. vertical pipe; 4. faucet; 5. extension pipe; 6. pressure gauge; 7. piezometer; 8. cable; 9. outlet pipe joint; 10. steel pipe cap; 11. elbow joint; 12. three-way joint; 13. valve. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0017] Reference Figure 1 A dam foundation pressure measuring tube pipe orifice device comprises a pressure measuring tube body 1, a horizontal tube 2 is fixedly connected to the pressure measuring tube body 1, a vertical tube 3 is fixedly connected to the end of the horizontal tube 2 away from the pressure measuring tube body 1, a faucet 4 is fixedly connected to the upper end of the vertical tube 3, an extension tube 5 is fixedly connected to the vertical tube 3, a pressure gauge 6 is fixedly installed on the end of the extension tube 5 away from the vertical tube 3, an osmometer 7 is installed in the pressure measuring tube body 1, a cable 8 is electrically connected to the outside of the osmometer 7, and an outlet pipe joint 9 for the cable 8 to extend is fixedly installed on the tube wall of the pressure measuring tube body 1.

[0018] A steel pipe cap 10 is fixedly mounted on the upper end of the pressure measuring tube body 1 .

[0019] The horizontal pipe 2 and the vertical pipe 3 are fixedly connected via an elbow joint 11 .

[0020] The vertical pipe 3 and the extension pipe 5 are fixedly connected via a three-way joint 12 .

[0021] The pressure measuring pipe body 1, the horizontal pipe 2, the vertical pipe 3 and the extension pipe 5 are all galvanized steel pipes.

[0022] A valve 13 is installed on the cross pipe 2.

[0023] The operating principle of the utility model is now described as follows:

[0024] When the present application is used, the pressure measuring tube body 1, the horizontal tube 2, the vertical tube 3, the faucet 4, the extension tube 5, the pressure gauge 6, the steel pipe cap 10, the elbow joint 11, the three-way joint 12 and the valve 13 are all connected by threads. When the threads are connected, use the raw tape to tighten them once in the clockwise winding direction. Do not twist them back. After tightening, leave 2 to 3 turns of threads. After the pipes are spliced, clean the fillers squeezed out of the threads. The fillers must not be squeezed into the pipe cavity to avoid blocking the pipeline. At the same time, the exposed threads are treated with anti-corrosion. The anti-corrosion paint extends 1 to 2 cm outside the threads to form a neat ring. The piezometer 7 is placed in the pressure measuring tube body 1 according to the specifications. The cable 8 is led out from the outlet pipe joint 9. When leading out the outlet, pay attention to the installation sequence of the inner plug and the outer plug. First install the inner plug to the outlet, pull the cable 8 out 2 to 3 cm, and wrap 1 to 2 turns of high pressure around the outside of the inner plug. Use electrical tape, then connect the outer plug to the inner plug and tighten it with a wrench to ensure that the seepage under high pressure does not leak through the joint of the outlet and affect the measured value of the seepage pressure. After all the accessories are installed, open valve 13 to drain the air. After the valve 13 flows out water at a uniform speed, close valve 13. After the reading of pressure gauge 6 stabilizes, check whether there is leakage in the connection parts of each component by visual observation or hand feeling. At the same time, compare and analyze the readings of pressure gauge 6 and osmometer 7 with the converted water level and the historical water level of the pressure measuring tube. If the water levels remain consistent or conform to the general rules of instrument operation, it means that the construction process has achieved the anti-leakage effect, and the second anti-rust paint can be applied to stabilize it, and normal observation can be started. Otherwise, it is necessary to remove each component to check whether there are narrow gaps or inconsistencies with the above construction methods. If so, reinstall them.

[0025] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and application concept of the present application, which should be covered by the protection scope of the present application.

Claims

1. A dam foundation pressure measuring tube nozzle device, comprising a pressure measuring tube body (1), characterized in that: The pressure measuring tube body (1) is fixedly connected to a horizontal tube (2), one end of the horizontal tube (2) away from the pressure measuring tube body (1) is fixedly connected to a vertical tube (3), the upper end of the vertical tube (3) is fixedly connected to a faucet (4), the vertical tube (3) is fixedly connected to an extension tube (5), the end of the extension tube (5) away from the vertical tube (3) is fixedly provided with a pressure gauge (6), an osmometer (7) is installed in the pressure measuring tube body (1), the osmometer (7) is electrically connected to a cable (8), and an outlet pipe joint (9) for the cable (8) to extend is fixedly installed on the tube wall of the pressure measuring tube body (1).

2. A dam foundation pressure measuring tube orifice device according to claim 1, characterized in that: A steel pipe cap (10) is fixedly mounted on the upper end of the pressure measuring tube body (1).

3. A dam foundation pressure measuring tube orifice device according to claim 1, characterized in that: The horizontal pipe (2) and the vertical pipe (3) are fixedly connected via an elbow joint (11).

4. A dam foundation pressure measuring tube orifice device according to claim 1, characterized in that: The vertical pipe (3) and the extension pipe (5) are fixedly connected via a three-way joint (12).

5. A dam foundation pressure measuring tube orifice device according to claim 1, characterized in that: The pressure measuring tube body (1), the horizontal tube (2), the vertical tube (3) and the extension tube (5) are all galvanized steel tubes.

6. A dam foundation pressure measuring tube orifice device according to claim 1, characterized in that: A valve (13) is installed on the transverse pipe (2).

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