Batch calibration device for hydraulic osmometers

Abstract

The utility model provides a batch calibration device for hydraulic osmometers. The batch calibration device comprises a push-pull type quick clamp, a piston type clamping device, a placement cylinder, an angle valve device, a communicating pipe, a line concentration box, a high-pressure connecting rubber pipe and a portable air pump. The osmometers and the cables penetrate through the windowing parts of the placement barrels and are supported and fixed by the push-pull type quick clamps, a sealed pressure cavity is formed by the sealing rubber rings, the placement barrels are connected to the communicating pipes through the angle valve devices, the communicating pipes are connected with the air pump, the osmometer cables are connected with the line concentration box in a tandem mode, and the reading instrument is connected with the port of the line concentration box, so that batch calibration of the multiple osmometers is achieved. The device is simple to operate, free of additional tools, convenient to record, high in observation result quality, quick to disassemble and assemble, capable of calibrating a plurality of osmometers at the same time, good in calibration environment consistency, high in result precision and low in cost, and the working efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of pressure measurement technology, and in particular to a batch calibration device for hydraulic piezometers. Background Technology

[0002] Piezometers, as important monitoring sensors, are widely used in numerous fields such as water conservancy and hydropower, municipal engineering, port and shipping, rail transit engineering, and geological exploration. They are primarily used to monitor key indicators such as pore water pressure, seepage pressure, and groundwater level in the soil and surrounding rock of dam bodies and foundation pits. Because changes in groundwater level directly affect the mechanical stability of the main structure and retaining structure of dam bodies and foundation pits, these indicators have always been a key focus of engineering safety monitoring.

[0003] To ensure the measurement accuracy and reliability of piezometers, the state has formulated a series of relevant industry standards, which clearly stipulate that piezometers must be calibrated after entering the site and before being installed in civil construction, in order to verify the stability of their performance and the reliability of their accuracy.

[0004] Currently, conventional piezometer calibration devices present numerous problems in practical operation. Conventional devices can only calibrate piezometers one by one, resulting in a cumbersome process that often requires specialized personnel. During calibration, the piezometer cable must pass through the cable hole on the sleeve nut. After the piezometer is capped with an adapter cap (including a sealing ring), it is inserted into the calibration housing, and then the nut is tightened using pipe wrenches and a large adjustable wrench. The calibration housing is then installed on the air pump screw seat, and the piezometer cable is connected to the reading instrument terminal. When operating the portable air pump for pressurization, a precision pressure gauge must be observed. Taking a 1000 kPa range piezometer as an example, the pressure should be increased in stages to six pressure values: 0 kPa, 200 kPa, 400 kPa, 600 kPa, 800 kPa, and 1000 kPa, maintaining a constant pressure. Data should be recorded six times for each pressure value on the reading instrument. The pressure relief return cycle is also read 6 times, and the entire process is repeated 3 times. Finally, the mechanical and temperature parameters of the piezometer are calculated using the curvature fitting formula. This method is not only labor-intensive and inefficient, but also has a long calibration cycle and poor results. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a batch calibration device for hydraulic piezometers. To achieve the above objectives, this utility model adopts the following technical solution:

[0006] A batch calibration device for hydraulic piezometers, comprising:

[0007] The installation tube has a structure for quickly installing the piezometer and can straighten, clamp and fix the piezometer.

[0008] A piezometer, as an osmotic pressure monitoring sensor, is used to measure osmotic pressure parameters;

[0009] Angle valve device, one end of which is sealed to the mounting cylinder and the other end of which is sealed to the connecting pipe, controls the opening or closing of the cavity in each calibration cylinder and the connecting pipe by opening and closing the angle valve device;

[0010] The connecting pipe is a tubular structure with multiple connection ports at both ends and on the sides. These connection ports connect the various housing cylinders in parallel, enabling the conduction of pressurized air between the housing cylinders.

[0011] A portable air pump with pressure regulation function is used to pressurize and depressurize the gas in the cavity of the calibration device during the calibration of the piezometer. Its outlet is sealed to one end of the high-pressure rubber tube.

[0012] The piston clamp is connected at one end to the push-pull quick clamp, and at the other end directly contacts the tail end of the piezometer. Under the action of the push-pull quick clamp, the piezometer is clamped.

[0013] The push-pull quick clamp, connected to the piston clamp via a movable connecting structure, enables quick support, clamping, and removal of the piezometer.

[0014] The junction box has multiple wiring ports inside, including piezometer wiring ports for connecting the cables of each piezometer and reader wiring ports for connecting the reader cables.

[0015] The high-pressure rubber hose is made of high-pressure resistant rubber. One end of it is sealed to the air outlet of the portable air pump, and the other end is sealed to the connecting joint of the connecting pipe. It is used to conduct pressurized air in various device components.

[0016] Furthermore, the mounting cylinder is provided with a first window structure, which is located on the side of the mounting cylinder. Its shape and size are adapted to the piston clamp, making it easy for the piston clamp to slide up and down on the mounting cylinder.

[0017] Furthermore, the mounting cylinder is also provided with a second window structure located on the side of the mounting cylinder. The length and width of the second window structure meet the requirements for quick insertion and removal of the piezometer and cable.

[0018] Furthermore, the placement cylinder is also equipped with a straightening rubber ring, which is made of elastic rubber and has an inner diameter slightly smaller than the outer diameter of the piezometer. When the piezometer is inserted, it can fit tightly against the outer wall of the piezometer, thus playing a role in straightening and buffering vibration.

[0019] Furthermore, a rubber buffer pad is provided at the part of the piston clamp that contacts the tail end of the piezometer.

[0020] Furthermore, the push-pull quick clamp has a handle structure that is easy to operate, and the handle surface is provided with anti-slip texture.

[0021] Furthermore, the hub box is also equipped with a port converter, which is a rotary structure. By rotating the port converter, the connection between different piezometers and the reading instrument can be quickly switched to realize the reading of each piezometer.

[0022] Furthermore, the cavity inside the mounting cylinder is an area where air pressure acts, forming a sealed space.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The operation process is simple and requires no additional auxiliary tools, reducing the difficulty of operation and labor intensity;

[0025] 2. Convenient and quick recording: Through the combination of the hub box and the reader, data can be read in batches quickly, improving the efficiency and accuracy of data recording;

[0026] 3. The observation results are of high quality. Due to the good consistency of calibration environmental conditions, the measurement data are more reliable and the results are more accurate.

[0027] 4. Quick assembly and disassembly: The push-pull quick clamp and other structural designs simplify the installation and disassembly process of the piezometer, saving time and labor costs.

[0028] 5. Supports simultaneous calibration of multiple piezometers, and each instrument can be connected to the system or disconnected separately, increasing operational flexibility and greatly improving work efficiency.

[0029] 6. Low cost: While improving work efficiency, it reduces labor and time costs, resulting in good economic benefits. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0031] Figure 1 This is a schematic diagram of the overall device structure according to an embodiment of the present utility model;

[0032] Figure 2 This is a detailed drawing of the calibration and installation pipe structure of an embodiment of the present utility model;

[0033] Figure 3 This is a detailed structural diagram of a portable air pump of a certain model according to an embodiment of this utility model;

[0034] Figure 4 This is a schematic diagram of the detailed piston clamp structure of an embodiment of the present utility model;

[0035] Figure 5 This is a schematic diagram of the detailed push-pull quick clamp structure of an embodiment of the present utility model;

[0036] Figure 6 This is a schematic diagram of the detailed junction box structure of an embodiment of the present utility model.

[0037] In the above figures: 1. Installation cylinder; 11. First window structure; 12. Second window structure; 13. Cable; 14. Straightening rubber ring; 15. Sealing rubber ring; 2. Piston gauge; 3. Angle valve device; 4. Connecting pipe; 5. Portable air pump; 51. Calibration device connecting seat; 6. Piston clamp; 61. Rubber buffer pad; 7. Push-pull quick clamp; 71. Handle structure; 72. Telescopic rod; 8. Junction box; 81. Wiring port; 82. Port converter; 9. High-pressure rubber hose; 10. Cavity. Detailed Implementation

[0038] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0039] like Figures 1-6 As shown in the figure, this utility model embodiment proposes a batch calibration device for hydraulic piezometers, comprising:

[0040] The installation cylinder 1 has a structure for quickly installing the piezometer 2, and can straighten, clamp and fix the piezometer 2;

[0041] Piezometer 2, as an osmotic pressure monitoring sensor, is used to measure osmotic pressure parameters;

[0042] Angle valve device 3, one end of which is sealed to the mounting cylinder 1 and the other end of which is sealed to the connecting pipe 4, controls the opening or closing of the cavity 10 in each calibration cylinder and the connecting pipe 4 by opening and closing the angle valve device 3.

[0043] The connecting pipe 4 is a tubular structure with multiple connection ports at both ends and on the sides. These connection ports connect the various placement cylinders 1 in parallel, enabling the conduction of pressurized air between the various placement cylinders 1.

[0044] The portable air pump 5 has a pressure regulation function. During the calibration of the piezometer 2, it pressurizes and depressurizes the gas in the calibration device cavity 10. Its outlet is sealed to one end of the high-pressure rubber tube 9. It is connected to the high-pressure rubber tube 9 through the calibration device connector 51 on the portable air pump 5.

[0045] The piston clamp 6 is movably connected at one end to the push-pull quick clamp 7, and the other end directly contacts the tail end of the piezometer 2. Under the action of the push-pull quick clamp 7, the piezometer 2 is clamped.

[0046] The push-pull quick clamp 7 is connected to the piston clamp 6 through a movable connecting structure, which can quickly realize the support, clamping and removal operations of the piezometer 2.

[0047] The junction box 8 has multiple wiring ports 81 inside, including a piezometer 2 wiring port 81 for connecting each piezometer 2 cable 13 and a reader wiring port 81 for connecting the reader cable 13.

[0048] The high-pressure rubber hose 9 is made of high-pressure resistant rubber. One end of it is sealed to the air outlet of the portable air pump 5, and the other end is sealed to the connecting joint of the connecting pipe 4. It is used to conduct pressurized air in each device component.

[0049] The working principle is as follows: the piezometer 2 and cable 13 are inserted through the installation cylinder 1, supported and fixed by the push-pull quick clamp 7, and sealed and isolated by the sealing rubber ring 15 at the front of the permeable stone of the piezometer 2. The hollow cavity 10 forms a closed pressure chamber. The angle valve device 3 connects each installation cylinder 1 to the connecting pipe 4. The connector of the connecting pipe 4 is connected to the air pump through the high-pressure connecting hose. The cable 13 of the piezometer 2 is connected to the internal wiring port 81 of the junction box 8. The piezometer 2 reading instrument is connected to the wiring port 81 of the junction box 8, which enables batch calibration of multiple piezometers 2.

[0050] like Figure 2 As shown, the mounting cylinder 1 is provided with a first window structure 11, which is located on the side of the mounting cylinder 1. Its shape and size are adapted to the piston clamp 6, so that the piston clamp 6 can slide up and down on the mounting cylinder 1.

[0051] like Figure 2 As shown, the mounting cylinder 1 is also provided with a second window structure 12 located on the side of the mounting cylinder 1. The length and width of the second window structure 12 meet the requirements for quick insertion and removal of the piezometer 2 and the cable 13.

[0052] like Figure 2 As shown, the placement cylinder 1 is also provided with a straightening rubber ring 14. The straightening rubber ring 14 is made of elastic rubber material, and its inner diameter is slightly smaller than the outer diameter of the piezometer 2. When the piezometer 2 is inserted, it can fit tightly against the outer wall of the piezometer 2, so as to straighten and buffer the vibration.

[0053] like Figure 4 As shown, a rubber buffer pad 61 is provided at the contact point between the piston clamp 6 and the tail end of the piezometer 2. This prevents damage to the piezometer 2 during the clamping process.

[0054] like Figure 5As shown, the push-pull quick clamp 7 has a handle structure 71 for easy operation, and the handle surface is provided with anti-slip texture. This facilitates the operator's application of force. The handle structure 71 drives the telescopic rod 72 to push and pull up and down.

[0055] like Figure 6 As shown, the hub box 8 is also equipped with a port converter 82. The port converter 82 has a rotary structure. By rotating the port converter 82, the connection between different piezometers 2 and the reading instrument can be quickly switched to realize the reading of each piezometer 2. By rotating the port converter 82 on the hub box 8, the piezometers 2 can be quickly switched in a set order to complete the reading work.

[0056] like Figure 2 As shown, the cavity 10 inside the mounting cylinder 1 is the air pressure application area, which forms a sealed space to ensure stable pressure transmission.

[0057] Compared to existing calibration methods, this device offers several advantages. First, it allows for rapid, batch installation of fixed piezometers 2 without the need for additional tools, eliminating the tedious process of repeated disassembly and reassembly. Second, it can connect 12-24 or even more piezometers 2 in parallel at a time, with each instrument individually connected to or disconnected from the system as needed, increasing flexibility and significantly improving work efficiency. Finally, it enables rapid batch readings via the junction box 8 and the reader, eliminating the need to disconnect and reconnect each cable 13 connector. Rapid readings of the piezometers 2 can be achieved at each sampling stage during pressurization and depressurization, allowing for the calculation of corresponding parameters and efficiently completing the calibration of the piezometers 2.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A hydraulic osmometer calibration apparatus, characterized by, The application relates to a multi-branch osmosis pressure monitoring device. The application comprises: a setting cylinder which is provided with a structure for quickly setting an osmosis pressure gauge and can right, clamp and fix the osmosis pressure gauge; an osmosis pressure gauge which is used as an osmosis pressure monitoring sensor and is used for measuring an osmosis pressure parameter; an angle valve device which is sealingly connected with the setting cylinder at one end and sealingly connected with a communicating pipe at the other end, and through the opening and closing control of the angle valve device, the conduction or closing between the cavity in each setting cylinder and the communicating pipe is controlled; the communicating pipe which is a tubular structure and is provided with a plurality of connecting ports at two ends and a side, through the connecting ports, each setting cylinder is connected in parallel to realize the conduction of pressure air among the setting cylinders; a portable air pump which is provided with a pressure adjusting function, during the setting of the osmosis pressure gauge, the air pump is used for pressurizing and depressurizing the gas in the cavity of the setting device, and the air outlet of the air pump is sealingly connected with one end of a high-pressure rubber pipe; a piston type clamp which is movably connected with a push-pull type quick clamp at one end and directly contacts the tail end of the osmosis pressure gauge at the other end, and through the action of the push-pull type quick clamp, the clamp can clamp the osmosis pressure gauge; the push-pull type quick clamp which is movably connected with the piston type clamp and can quickly support, clamp and remove the osmosis pressure gauge; a junction box which is internally provided with a plurality of wiring ports, including an osmosis pressure gauge wiring port for connecting the cables of each branch osmosis pressure gauge and a reading instrument wiring port for connecting the cable of a reading instrument; 2. A hydraulic permeameter calibration apparatus as claimed in claim 1, wherein: the high-pressure rubber pipe which is made of high-pressure-resistant rubber material, one end of the high-pressure rubber pipe is sealingly connected with the air outlet of the portable air pump, and the other end of the high-pressure rubber pipe is sealingly connected with the connecting joint of the communicating pipe, and the high-pressure rubber pipe is used for conducting the pressure air in each device component.

3. A hydraulic permeameter calibration apparatus as claimed in claim 1, wherein: The setting cylinder is provided with a first windowing structure which is located on the side of the setting cylinder and is adapted in shape and size to the piston type clamp, so that the piston type clamp can slide up and down on the setting cylinder.

4. A hydraulic permeameter calibration apparatus as claimed in claim 1, wherein: The setting cylinder is also provided with a second windowing structure which is also located on the side of the setting cylinder, and the length and width of the second windowing structure meet the requirements of quickly inserting and taking out the osmosis pressure gauge and the cable.

5. A hydraulic permeameter calibration apparatus as claimed in claim 1, wherein: The setting cylinder is internally provided with a righting rubber ring which is made of elastic rubber material and has an inner diameter slightly smaller than the outer diameter of the osmosis pressure gauge.

6. A hydraulic osmometer calibration apparatus as defined in claim 1, wherein: The part of the piston type clamp which contacts the tail end of the osmosis pressure gauge is provided with a rubber buffer pad.

7. A hydraulic permeameter calibration apparatus as claimed in claim 1, wherein: The push-pull type quick clamp is provided with a handle structure which is convenient to operate, and the surface of the handle is provided with anti-skid lines.

8. A hydraulic osmometer calibration apparatus as defined in claim 1, wherein: The junction box is also provided with a port converter which is a rotary structure, through rotating the port converter, the connection between different osmosis pressure gauges and the reading instrument can be quickly switched to realize the reading of each branch osmosis pressure gauge. The cavity in the setting cylinder is an air pressure action area which forms a closed space.

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