CN217332054U - A device for real-time monitoring of mud density - Google Patents

Abstract

A device for monitoring the density of slurry in real time comprises a support device, a telescopic pipe and a data collector, wherein a first fixed pulley and a second fixed pulley are arranged on the support device, one end of a measuring rope is wound on the first fixed pulley, the other end of the measuring rope is connected with the telescopic pipe through a hook after being wound on the second fixed pulley, a pressure sensor is arranged on the telescopic pipe, and the pressure sensor is sequentially connected with the data collector and a computer through a data line; the utility model discloses an improve the sensor and gather mud along the journey pressure value change, can acquire mud proportion along the journey change value, enlarge its test object's monitoring range, avoided the contingency deviation that mud impurity caused, improved mud density test result reliability by a wide margin.

Description

A device for real-time monitoring of mud density

technical field

The utility model belongs to the field of mud monitoring devices, in particular to a device for monitoring mud density in real time.

Background technique

The underground diaphragm wall is a kind of grooving machine on the ground for the foundation project. Along the peripheral axis of the deep excavation project, under the condition of mud wall protection, a narrow and long deep groove is excavated. Place steel cages, and then use the conduit method to pour underwater concrete to build a unit groove section. Through the above method, section by section, a continuous reinforced concrete wall is built underground, and it is used as a water interception, anti-seepage, load-bearing and water-retaining structure. . After decades of development, the technology of underground diaphragm wall has been greatly developed, and now it is widely used in many large-scale water conservancy and hydropower projects.

During the construction of the underground diaphragm wall, in order to ensure the trough quality of the diaphragm wall and the stability of the trough wall, it is necessary to master the relevant performance and technical indicators of the mud on the project site, so as to facilitate the control of the process of mud preparation and trough construction. The specific gravity of the mud can be It indirectly reflects the pressure of the mud on the soil of the tank wall. In the construction process, instruments such as density meters and pressure transmitters are often used for real-time monitoring. The use of the above devices for measurement usually has the following shortcomings:

1. The density meter is made according to the force balance of gravity and objects floating and the Archimedes principle. It is often used to measure the density of samples in the laboratory. The measurement conditions and environmental requirements are strict, and it is difficult to apply to the mud density measurement on the engineering site, especially the mud does not have a fixed free liquid surface, and the distribution along the route is relatively complex;

2. Although the pressure transmitter can measure the mud pressure in the tank, it is difficult to guarantee the measurement accuracy for the working conditions with large burial depth.

SUMMARY OF THE INVENTION

In view of the technical problems existing in the background technology, the present utility model provides a device for monitoring the mud density in real time. The device can acquire the change value of the mud specific gravity along the way by improving the sensor to collect the change of the mud pressure value along the way, and amplify its test. The monitoring range of the object avoids accidental deviation caused by mud impurities, and greatly improves the reliability of mud density test results.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions to realize:

A device for real-time monitoring of mud density. The device includes a bracket device, a telescopic tube and a data collector. The bracket device is provided with a first fixed pulley and a second fixed pulley, and one end of a measuring rope is wound on the first fixed pulley. The other end of the measuring rope is wound around the second fixed pulley and then connected to a telescopic tube through a hook. A pressure sensor is installed on the telescopic tube, and the pressure sensor is sequentially connected to the data collector and the computer through a data line.

In a preferred solution, the bracket device includes a vertical rod, a top rod and a bottom plate; one end of the vertical rod is vertically connected to the bottom plate, the other end of the vertical rod is fixedly connected to the top rod, the first fixed pulley is installed on the vertical rod, and the first fixed pulley is installed on the vertical rod. Two fixed pulleys are arranged on the top rod.

In a preferred solution, pulleys are provided on both sides of the bottom plate, threaded holes are provided at four corners of the bottom plate, the support screw is threadedly connected to the screw hole, and the lower end of the support screw is connected to the base.

In a preferred solution, the wheel center of the first fixed pulley is connected to the crank handle, the first fixed pulley is driven by the crank handle and rotates around its own axis, the first fixed pulley is provided with a first limit hole, and the first fixed pulley is provided with a first limit hole. The limit holes are distributed symmetrically around the first fixed pulley, the vertical rod is provided with a second limit hole, and the positioning pin penetrates the first limit hole and the second limit hole to lock and fix the first fixed pulley.

In a preferred solution, the telescopic tube is formed by sleeving long pipes of different diameters, and the telescopic tube is provided with fixing bolts for fixing the length of the telescopic tube.

In a preferred solution, the measuring rope is wound on the first fixed pulley, and the measuring rope is provided with a scale bar.

In a preferred solution, a plurality of pressure sensors are installed at the same height on the telescopic tube, and the pressure sensors are distributed symmetrically in a ring.

This patent can achieve the following beneficial effects:

1. By changing the length of the telescopic pipe, the device can collect the change of the mud pressure value along the way; and multiple pressure sensors can more accurately test the mud pressure value at different depths, and effectively improve the accuracy of the measurement results;

2. The device can be used for the groove section of the diaphragm wall with a larger buried depth through the expansion tube, which expands the measurement range.

Description of drawings

Below in conjunction with accompanying drawing and embodiment, the utility model is further described:

1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a structural schematic diagram of the support device and the lifting system of the present invention.

In the figure: bracket device 1, vertical rod 101, top rod 102, bottom plate 103, first limit hole 104, first fixed pulley 2, second limit hole 201, crank handle 202, second fixed pulley 3, measuring rope 4. Hook 5, telescopic tube 6, fixing bolt 7, pressure sensor 8, data cable 9, data collector 10, computer 11, support screw 12, base 1201, positioning pin 13, pulley 14.

Detailed ways

As shown in Figure 1, a device for real-time monitoring of mud density, the device includes a bracket device 1, a telescopic tube 6 and a data collector 10, the bracket device 1 is provided with a first fixed pulley 2 and a second fixed pulley 3, One end of the measuring rope 4 is wound on the first fixed pulley 2, and the other end of the measuring rope 4 is wound around the second fixed pulley 3 and then connected to the telescopic tube 6 through the hook 5, and a pressure sensor 8 is installed on the telescopic pipe 6. The pressure sensor 8 is sequentially connected to the data collector 10 and the computer 11 through the data line 9 .

A preferred solution is shown in FIG. 2 , the bracket device 1 includes a vertical rod 101, a top rod 102 and a bottom plate 103; one end of the vertical rod 101 is vertically connected with the bottom plate 103, and the other end of the vertical rod 101 is fixedly connected with the top rod 102, The first fixed pulley 2 is installed on the vertical rod 101 , and the second fixed pulley 3 is installed on the top rod 102 .

In a preferred solution, as shown in FIG. 2 , pulleys 14 are provided on both sides of the bottom plate 103 , threaded holes are provided at the four corners of the bottom plate 103 , the support screw 12 is threadedly connected with the threaded holes, and the lower end of the support screw 12 is connected to the base 1201 ; The base plate 103 can be easily pushed to any work place. When a fixing device is required, it is only necessary to rotate the support screw 12 downward, and make the base 1201 at the lower end of the support screw 12 abut the ground, and then the pulley 14 can be suspended, so that the base plate 103 can be kept in the air. Stable and fixed, the lower end surface of the base 1201 is pasted with a flexible pad to further improve the stability of the device.

A preferred solution is shown in FIG. 2 , the wheel center of the first fixed pulley 2 is connected to the crank handle 202 , the first fixed pulley 2 is driven by the crank handle 202 and rotates around its own axis, and the first fixed pulley 2 is provided with a third A limit hole 104, the first limit hole 104 is distributed symmetrically in a ring around the first fixed pulley 2, the vertical rod 101 is provided with a second limit hole 201, when the first fixed pulley 2 is rotated in place, then When the positioning pin 13 passes through the first limiting hole 104 and the second limiting hole 201 , the first fixed pulley 2 can be locked and fixed so as not to rotate.

The preferred solution is shown in Figure 1. The telescopic tube 6 is made of long tubes of different diameters. After adjusting the lengths of the inner and outer long tubes, the length of the telescopic tube 6 can be locked by tightening the fixing bolts 7. dead fixed.

The preferred solution is shown in Figures 1 and 2. The measuring rope 4 is wound on the first fixed pulley 2, and the measuring rope 4 can be rolled and unrolled by rotating the first fixed pulley 2. The measuring rope 4 is provided with a scale bar It is convenient to judge the depth of the movement of the measuring rope 4 .

A preferred solution is shown in FIG. 1 , a plurality of pressure sensors 8 are installed on the telescopic tube 6 at the same height, and the pressure sensors 8 are distributed symmetrically in a ring shape. 8 Measurement errors caused by its own reasons.

The measuring process of the device of the utility model is as follows:

1. Use the pulley to push the device to the designated work location, and then rotate the support screw 12 downward to keep the bottom plate 103 stable and fixed;

2. Connect the components, adjust the length of the telescopic tube 6 according to the actual situation on site, and install the pressure sensor 8 in the slot hole at the same height of the telescopic tube 6;

3. Rotate the first fixed pulley 2 by the crank handle 202, and slowly put the telescopic tube 6 together with the pressure sensor 8 into the mud tank section. After reaching the designated depth, the first fixed pulley 2 is locked and fixed by the positioning pin 13, so that Its accurate measurement of mud pressure value;

4. Starting from the bottom of the groove section, slowly lift the telescopic tube 6 by rotating the first fixed pulley 2 in the opposite direction, let it stand still every 0.1m and record the mud pressure value until the pressure sensor 8 is completely lifted out of the mud;

5. During the measurement process, the mud pressure value collected by the pressure sensor 8 is recorded as P, the real-time depth of the pressure sensor 8 is recorded as h, g is the gravitational acceleration (known value) at this depth, and ρ is the mud at this height. density value;

即可计算出不同高度处的泥浆密度值ρ。6. According to the pressure formula:

The mud density value ρ at different heights can be calculated.

The above-mentioned embodiments are only the preferred technical solutions of the present invention, and should not be regarded as limitations of the present invention. An equivalent alternative to features is the scope of protection. That is, equivalent replacements and improvements within this scope are also within the protection scope of the present invention.

Claims (7)

1. The utility model provides a device of real-time supervision mud density, the device is including support device (1), flexible pipe (6) and data collection station (10), its characterized in that: install first fixed pulley (2) and second fixed pulley (3) on support device (1), the one end of measuring rope (4) is convoluteed on first fixed pulley (2), and the other end of measuring rope (4) is connected flexible pipe (6) through couple (5) after passing around second fixed pulley (3), has installed pressure sensor (8) on flexible pipe (6), data collection station (10) and computer (11) are connected gradually through data line (9) in pressure sensor (8).

2. The apparatus for monitoring mud density in real time according to claim 1, wherein: the bracket device (1) comprises an upright rod (101), a top rod (102) and a bottom plate (103); one end of the vertical rod (101) is vertically connected with the bottom plate (103), the other end of the vertical rod (101) is fixedly connected with the ejector rod (102), the first fixed pulley (2) is arranged on the vertical rod (101), and the second fixed pulley (3) is arranged on the ejector rod (102).

3. The apparatus for monitoring mud density in real time according to claim 2, wherein: pulleys (14) are arranged on two sides of the bottom plate (103), threaded holes are formed in four corners of the bottom plate (103), the supporting screw (12) is in threaded connection with the threaded holes, and the lower end of the supporting screw (12) is connected with the base (1201).

4. The apparatus for monitoring mud density in real time according to claim 2, wherein: crank (202) is connected to the wheel center of first fixed pulley (2), first fixed pulley (2) are driven by crank (202) and are rotatory around self axle center, have seted up first spacing hole (104) on first fixed pulley (2), first spacing hole (104) are annular symmetric distribution around first fixed pulley (2), have seted up spacing hole of second (201) on pole setting (101), and location bolt (13) can be deadly fixed to first fixed pulley (2) lock after running through first spacing hole (104) and spacing hole of second (201).

5. The apparatus for real-time monitoring of mud density of claim 1, wherein: the telescopic pipe (6) is formed by sleeving long pipes with different pipe diameters, and a fixing bolt (7) is arranged on the telescopic pipe (6) and used for fixing the length of the telescopic pipe (6).

6. The apparatus for real-time monitoring of mud density of claim 1, wherein: the measuring rope (4) is wound on the first fixed pulley (2), and a scale bar is arranged on the measuring rope (4).

7. The apparatus for real-time monitoring of mud density of claim 1, wherein: a plurality of pressure sensors (8) are arranged at the same height on the telescopic pipe (6), and the pressure sensors (8) are annularly and symmetrically distributed.

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