A device for reading the water level of a pressure pipe in a dam gallery and a horizontal tunnel

Abstract

The utility model discloses a device for reading the water level of pressure measuring pipe in dam gallery and horizontal tunnel, which aims to solve the problem of time-consuming, laborious and easy to damage the pressure measuring pipe when the pressure measuring pipe needs to be disassembled for measurement without water pressure. It comprises a tee joint connected to the top end of the original pressure measuring pipe, a connecting pipe with a pressure gauge (including a valve) and a transparent reading pipe connected to the tee joint respectively, and a detachable pipe plug at the top end of the reading pipe. The reading pipe and the tee joint are threadedly connected through a connecting head, and a branch pipe for auxiliary fixation is also provided. The device can measure under both water pressure and no water pressure conditions without disassembling the pressure measuring pipe, and is easy to operate, suitable for monitoring the water level of the pressure measuring pipe in dam gallery and horizontal tunnel.

Description

Technical Field

[0001] This utility model relates to the technical field of water level measurement devices, and in particular to a device for measuring the water level of piezometers in dam corridors and tunnels. Background Technology

[0002] In dam safety monitoring, piezometers are typically installed in the dam's drainage system to monitor the water pressure exerted on the dam. However, some piezometers are affected by environmental factors (temperature, upstream and downstream water levels, rainfall, etc.) or other reasons, resulting in intermittent water pressure, and even when pressure is present, it is often low. When there is water pressure, the pressure gauge can be read directly. However, when there is no water pressure, the piezometer opening must be opened to insert a water level gauge to measure the distance between the water level and the opening, and then the opening must be sealed. This process is time-consuming, labor-intensive, and can easily damage the piezometer. Summary of the Invention

[0003] The technical problem to be solved by this utility model is that when there is no water pressure, it is necessary to disassemble the pressure measuring tube before using the water level gauge, which is time-consuming, laborious and easy to damage the pressure measuring tube.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a device for measuring the water level of a piezometer in a dam gallery and tunnel, including a tee connector connected to the top of the original piezometer, a connecting pipe and a transparent reading tube respectively connected to the tee connector, a pipe plug detachably connected to the top of the reading tube, a pressure gauge installed on the connecting pipe, and a valve installed upstream of the pressure gauge.

[0005] Preferably, a connector is fixedly connected to the top end of the tee joint, the reading tube is threaded onto the connector, and sealant is provided at the joint between the reading tube and the connector.

[0006] Preferably, the inner top of the connector is provided with an internal thread, and the bottom end of the reading tube is provided with a threaded head that screws into the connector, and the threaded head is threadedly connected to the inner top of the connector.

[0007] Preferably, the measuring tube is fixedly connected to the bottom end of the tee connector via a flange, and a branch pipe for auxiliary fixing of the reading tube is vertically fixedly connected to the flange.

[0008] Preferably, an arc-shaped clamp is fixedly connected to the branch pipe, the clamps are evenly distributed on the branch pipe, and the inner sidewall of the clamp is in contact with the outer sidewall of the reading tube.

[0009] Preferably, a pulley is rotatably connected to the top of the branch pipe, the pulley is located directly above the reading tube, and an annular groove adapted to the outer diameter of the water level gauge connection line is formed on the outer circumference of the pulley.

[0010] Preferably, the top end of the reading tube has an air hole, which is evenly distributed around the axis of the reading tube. When the tube plug is fixed to the top end of the reading tube, the tube plug blocks the air hole.

[0011] Preferably, the tube plug and the reading tube are connected by a thread, and an annular groove is provided in the middle of the tube plug. A sealing ring is installed in the annular groove, and the sealing ring is located below the air hole when the tube plug is fixedly connected to the reading tube.

[0012] This utility model provides a device for measuring the water level of piezometers in dam corridors and tunnels, which has the following beneficial effects.

[0013] 1. Connect the pressure testing tube to the pressure gauge and transparent reading tube via a three-way connector. When there is water pressure, the data can be read directly through the pressure gauge. When there is no water pressure, there is no need to disassemble the pressure testing tube. Simply open the tube plug at the top of the reading tube to measure the distance between the water level and the tube opening using the water level gauge. This eliminates the tedious steps of disassembling and sealing the traditional pressure testing tube, greatly reducing operation time and labor costs.

[0014] 2. The device accommodates measurement needs in both pressurized and depressurized water scenarios. The pressure gauge provides rapid feedback on water pressure, and the transparent reading tube allows for intuitive observation of the water level. The arc-shaped clamps on the branch pipe stably support the reading tube, preventing it from swaying and affecting measurement accuracy. The pulley at the top guides the water level gauge connection line vertically downwards, ensuring accurate measurement data. It is suitable for monitoring pressure gauges at different locations within dam galleries and tunnels. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the reading tube in an embodiment of the present invention.

[0017] In the diagram: 1. Pressure measuring tube; 2. Flange; 3. Tee; 4. Connector; 5. Reading tube; 6. Pipe plug; 7. Air vent; 8. Scale line; 9. Connecting pipe; 10. Valve; 11. Pressure gauge; 12. Threaded head; 13. Branch pipe; 14. Clamp; 15. Pulley. Detailed Implementation

[0018] like Figure 1 and Figure 2As shown, this utility model provides a device for measuring the water level of a piezometer in a dam gallery and tunnel. It includes a tee connector 3 connected to the top of the original piezometer 1, a connecting pipe 9 and a transparent reading pipe 5 respectively connected to the tee connector 3, a pipe plug 6 detachably connected to the top of the reading pipe 5, a pressure gauge 11 installed on the connecting pipe 9, and a valve 10 installed upstream of the pressure gauge 11.

[0019] An improvement is made directly to the existing pressure measuring tube 1 by installing a three-way connector 3 on the pressure measuring tube 1. The three-way connector connects to the reading tube 5 and the connecting tube 9 respectively. The reading tube 5 is a transparent tube with scale lines 8 set along its length. When there is pressure, the water level in the pressure measuring tube 1 can be directly read through the reading tube 5. When there is no pressure, the water level can be measured by opening the tube plug 6 on the reading tube 5 and placing the submersible water level gauge in. When the pressure is too high, the water pressure can be measured by opening the valve 10 and using the pressure gauge 11 installed on the connecting tube 9. The water level is then determined by converting the water pressure.

[0020] like Figure 1 and Figure 2 As shown, to facilitate the installation of the reading tube 5, a connector 4 is fixedly connected to the top end of the tee connector 3. The reading tube 5 is threaded onto the connector 4, and sealant is applied to the joint between the reading tube 5 and the connector 4. Installing the reading tube 5 via the connector 4 facilitates the installation and removal of the tube 5.

[0021] like Figure 2 As shown. The inner top of the connector 4 is provided with an internal thread, and the bottom end of the reading tube 5 is provided with a threaded head 12 that screws into the connector 4. The threaded head 12 is threadedly connected to the inner top of the connector 4. The threaded connection improves the installation efficiency of the installation tube 5, and the sealant ensures the sealing of the installation tube 5.

[0022] like Figure 1 As shown, to ensure the stability of the connection between the tee connector 3 and the measuring tube 1, the bottom end of the measuring tube 1 and the tee connector 3 are fixedly connected by a flange 2, and a branch pipe 13 for auxiliary fixing of the reading tube 5 is vertically fixedly connected to the flange 2.

[0023] like Figure 1 As shown. An arc-shaped clamping block 14 is fixedly connected to the branch pipe 13. The clamping blocks 14 are equidistantly distributed on the branch pipe 13, and the inner wall of the clamping block 14 fits against the outer wall of the reading tube 5. By installing the branch pipe 13 on the flange 2, the branch pipe 13 is used for auxiliary fixing of the reading tube 5, and the clamping blocks 14 do not interfere with the installation of the reading tube 5.

[0024] like Figure 1As shown. A pulley 15 is rotatably connected to the top of the branch pipe 13. The pulley 15 is located directly above the reading tube 5, and an annular groove adapted to the outer diameter of the water level gauge connection line is formed on the outer circumference of the pulley 15. The auxiliary wheel 15 is used to support the water level gauge connection line. After opening the pipe plug 6, the water level gauge is placed into the reading tube 5 to read the water level. During the lowering process, the pulley 15 supports the water level gauge connection line.

[0025] like Figure 1 and Figure 2 As shown. The top end of the reading tube 5 has air holes 7, which are evenly distributed around the axis of the reading tube 5. When the tube plug 6 is fixed to the top end of the reading tube 5, the tube plug 6 seals the air holes 7. When the reading tube 5 directly reads the water level, the tube plug 6 is in a semi-open state, and the air holes 7 are open, so the accuracy of the reading will not decrease due to air pressure.

[0026] In a preferred embodiment of this invention, the tube plug 6 and the reading tube 5 are connected by a thread. An annular groove is formed in the middle of the tube plug 6, and a sealing ring is installed within the groove. When the tube plug 6 is fixedly connected to the reading tube 5, the sealing ring is located below the air hole 7. By providing the sealing ring, leakage from the reading tube 5 can be prevented after the tube plug 6 is locked.

Claims

1. A device for measuring the water level of piezometers in dam galleries and tunnels, characterized in that: It includes a three-way connector (3) connected to the top of the original pressure measuring tube (1), a connecting tube (9) and a transparent reading tube (5) respectively connected to the three-way connector (3), a tube plug (6) is detachably connected to the top of the reading tube (5), a pressure gauge (11) is installed on the connecting tube (9), and a valve (10) is installed upstream of the pressure gauge (11).

2. The device for measuring the water level of piezometers in dam galleries and tunnels as described in claim 1, characterized in that: The top end of the three-way connector (3) is fixedly connected to a connector (4), the reading tube (5) is threaded onto the connector (4), and a sealant is provided at the joint between the reading tube (5) and the connector (4).

3. The device for measuring the water level of piezometers in dam galleries and tunnels as described in claim 2, characterized in that: The inner top of the connector (4) is provided with an internal thread, and the bottom end of the reading tube (5) is provided with a threaded head (12) that is screwed into the connector (4). The threaded head (12) is threadedly connected to the inner top of the connector (4).

4. The device for measuring the water level of piezometers in dam galleries and tunnels as described in claim 1, characterized in that: The pressure measuring tube (1) and the bottom end of the tee connector (3) are fixedly connected by a flange (2), and a branch pipe (13) for auxiliary fixing of the reading tube (5) is vertically fixed on the flange (2).

5. The device for measuring the water level of piezometers in dam galleries and tunnels as described in claim 4, characterized in that: An arc-shaped clamp (14) is fixedly connected to the branch pipe (13). The clamps (14) are evenly distributed on the branch pipe (13), and the inner sidewall of the clamp (14) is in contact with the outer sidewall of the reading tube (5).

6. The device for measuring the water level of piezometers in dam galleries and tunnels as described in claim 5, characterized in that: The top end of the branch pipe (13) is rotatably connected to a pulley (15), which is located directly above the reading tube (5). An annular groove adapted to the outer diameter of the water level gauge connection line is provided on the outer circumference of the pulley (15).

7. The device for measuring the water level of piezometers in dam galleries and tunnels as described in claim 1, characterized in that: The top end of the reading tube (5) is provided with an air hole (7), and the air holes (7) are evenly distributed around the axis of the reading tube (5). When the tube plug (6) is fixed to the top end of the reading tube (5), the tube plug (6) blocks the air hole (7).

8. The device for measuring the water level of piezometers in dam galleries and tunnels as described in claim 7, characterized in that: The plug (6) and the reading tube (5) are connected by threads. The plug (6) has an annular groove in the middle and a sealing ring is installed in the annular groove. When the plug (6) is fixedly connected to the reading tube (5), the sealing ring is located below the air hole (7).

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