CN105547128B - A kind of inductance type sediment thickness measuring instrument and measuring method - Google Patents

Abstract

The invention discloses an inductive sediment thickness measuring instrument and its measuring method. The inductive sediment thickness measuring instrument mainly includes a conductive material ring, a detection column and an inductance detection and display device. An inductance coil group composed of a plurality of inductance coils arranged in a dense or sparse manner in series, the detection column is set in the conductive material ring and can slide back and forth in the vertical direction, so that it can drive the fixed on the detection column The probe is inserted into the bottom surface of the sediment layer to measure the thickness of the sediment. The measurement method uses the principle of electromagnetic induction between the conductive material ring and the inductance coil group to implement position detection, which is not easily disturbed by external factors, and the detection is stable and reliable. It has good performance, high measurement accuracy, and convenient measurement operation. The measurement result can be displayed intuitively through the inductance detection and display device. It has strong practicability and overcomes the defects of the existing sediment thickness measurement technology.

Description

An inductive sediment thickness measuring instrument and its measuring method

technical field

The invention relates to the technical field of sediment thickness measurement of bored piles in engineering construction, in particular to an inductive sediment thickness measuring instrument and a measuring method.

Background technique

The thickness of the sediment at the bottom of the cast-in-place pile will affect the construction quality of the cast-in-place pile. The current relevant national standards and specifications have clear and strict regulations on the thickness of sediment. For example, taking the "Technical Specifications for Building Pile Foundations" (JGJ94-2008) as an example, the sediment thickness index at the bottom of the pile pile with mud retaining wall forming holes should meet: 1) End-bearing piles should not be larger than 50mm; 2) friction piles should not be larger than 100mm; 3) pullout-resistant and low-horizontal piles should not be larger than 200mm.

At present, the measurement of the sediment thickness before pile formation generally adopts the weight hammer method or the stylus cake measurement method. The detection tool of the heavy hammer method is a conical measuring hammer. The construction worker puts down the heavy hammer and enters the drill hole, and records the depth data when the heavy hammer touches the top surface of the sediment and the bottom of the hole in two times. The difference between the two data is the thickness of the sediment. . The stylus cake measurement method uses a stylus and a cake to measure the maximum sinking depth at the bottom of the hole, and the difference between the two is the sediment thickness. The existing methods are greatly affected by human factors, cumbersome to operate, large in measurement error, and not very practical.

Contents of the invention

In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide an inductive sediment thickness measuring instrument, which has good stability and reliability, can easily measure the sediment thickness through simple operation, and has high measurement accuracy , the display of the detection result of the sediment thickness is intuitive, and the defects existing in the existing sediment thickness measurement technology can be overcome.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

An inductive sediment thickness measuring instrument, comprising a conductive material ring, a vertically arranged detection column in the shape of a long column, and an inductance detection and display device; an inductance coil group is arranged vertically inside the detection column , the inductance coil group is composed of a plurality of inductance coils arranged in series from sparse to dense or from dense to sparse along the vertical direction of the detection column; It is fixedly supported on the measuring support plate arranged horizontally, and the measuring support plate is used to be placed flat on the upper surface of the sediment to be measured; the detection column is set in the conductive material ring and can slide back and forth vertically The probe bracket is fixedly connected with a probe extending vertically downwards, and the probe can be lifted up to the plane position where the measuring support plate is located or above, and the lower end of the probe can be inserted below the plane where the measurement support plate is located as the detection column slides vertically downwards, so as to be inserted down to the position of the lower bottom surface of the sediment layer to measure the thickness of the sediment; The inductance detection and display device is electrically connected to the inductance coil group inside the detection column, which is used to drive the inductance coil group inside the detection column to generate an alternating magnetic field by outputting alternating current, and detect the inductance value of the inductance coil group, and determine according to the detected inductance value The relative position of the conductive material ring on the outside of the detection column, and the relative position of the conductive material ring on the outside of the detection column when the lower end of the probe is inserted down to the bottom of the sediment layer according to the vertical sliding of the detection column is converted. The measured sediment thickness value is obtained and displayed.

In the above-mentioned inductive sediment thickness measuring instrument, specifically, the detection column includes a vertically arranged elongated tubular casing, a bottom end cover for sealing the bottom end of the casing, and a The inductance coil group is arranged in the casing and is composed of a plurality of inductance coils vertically stacked and connected in series.

In the above-mentioned inductive sediment thickness measuring instrument, as a preferred solution, the material of the casing is a magnetically permeable material.

In the above-mentioned inductive sediment thickness measuring instrument, as a preferred solution, there are multiple probes fixedly connected to the detection column through the probe bracket, and they are evenly distributed along the circumferential direction of the cross-section of the detection column.

In the above-mentioned inductive sediment thickness measuring instrument, as an improvement, a probe guide hole is provided on the measuring support plate corresponding to the position of the probe, and the diameter of the probe guide hole is the same as the diameter of the cross-section of the probe. matching, so that the probe can pass through the probe guide hole and can slide back and forth vertically in the probe guide.

In the above-mentioned inductive sediment thickness measuring instrument, as a preferred solution, the inductance detection and display device is fixedly installed on the top of the detection column, and the casing of the inductance detection and display device is also provided with a lifting handle or a lifting ring.

In the above inductive sediment thickness measuring instrument, as a preferred solution, inductance detection calibration information is pre-stored and recorded in the inductance detection display device, and the inductance detection calibration information is used to indicate the corresponding conductive material when different inductance values are detected The relative position of the ring on the outer side of the detection column, and in the inductance detection calibration information, the relative position of the conductive material ring on the outer side of the detection column is marked as The zero point value of the sediment thickness, when the detection column is slid vertically so that the lower end of the probe is inserted to different depths below the plane where the measuring support plate is located, the relative position of the conductive material ring on the outside of the detection column is marked as the zero point value of the sediment thickness The position has the sediment thickness detection value corresponding to the depth difference; the inductance detection display device "determines the relative position of the conductive material ring on the outside of the detection column according to the detected inductance value, and the lower end of the probe is lowered according to the vertical sliding of the detection column. When inserted into the position of the bottom surface under the sediment layer, the relative position of the conductive material ring on the outside of the detection column is converted to obtain the measured sediment thickness value." The specific method is: the inductance detection and display device respectively drives the internal inductance of the detection column In the state where the coil group generates an alternating magnetic field, when the detection column is slid vertically so that the lower end of the probe is inserted down to the bottom of the sediment layer, the detected inductance value of the inductance coil group is matched with the inductance detection calibration information For comparison, the matched sediment thickness detection value is determined as the measured sediment thickness value.

Correspondingly, the present invention also provides the method that uses above-mentioned inductive sediment thickness measuring instrument to carry out sediment thickness measurement operation; For this reason, the present invention has adopted following technical scheme:

A method for measuring sediment thickness. The above-mentioned inductive sediment thickness measuring instrument is used for sediment thickness measurement, and the inductance detection and display device of the inductive sediment thickness measuring instrument is pre-stored and recorded with inductance detection and calibration information, and the inductance detection and calibration information is used for To indicate the relative position of the conductive material ring on the outside of the detection column when different inductance values are detected, and in the inductance detection calibration information, slide the detection column vertically so that the lower end of the probe is located at the plane where the measurement support plate is located The relative position of the conductive material ring on the outside of the detection column is marked as the zero point value of the sediment thickness. Slide the detection column vertically so that the lower end of the probe is inserted to different depths below the plane where the measuring support plate is located. When the conductive material ring is on the detection column The relative position on the outside is marked as the sediment thickness detection value having a corresponding depth difference from the sediment thickness zero point value position.

The sediment thickness measurement method specifically includes the following steps:

1) Adjust the relative position of the detection column and the conductive material ring in the inductive sediment thickness measuring instrument so that the lower end of the probe is located at the plane where the measuring support plate is located;

2) Place the inductive sediment thickness measuring instrument at the position of the sediment to be measured, so that the measuring support plate of the inductive sediment thickness measuring instrument is placed flat on the upper surface of the sediment to be measured and the detection column is in a vertical state;

3) Operate the detection column of the inductive sediment thickness measuring instrument to slide vertically downward in the conductive material ring, drive the probe to insert downward into the sediment layer, and stop until the lower end of the probe is inserted to the lower bottom of the sediment layer, and then Detect and record the inductance value of the inductance coil group in the current detection column through the inductance detection display device, as the inductance detection value when measuring the bottom surface of the sediment layer;

4) The inductance detection and display device of the inductive sediment thickness measuring instrument matches and compares the inductance detection value when measuring the bottom surface of the sediment layer with the inductance detection calibration information, and determines the measured sediment thickness value according to the matched sediment thickness detection value, and to be displayed.

In the above sediment thickness measurement method, as a preferred solution, the steps 1) to 3) are repeated multiple times to obtain multiple inductance detection values when measuring the bottom surface of the sediment layer; in the step 4), the inductance The inductance detection and display device of the sediment thickness measuring instrument matches and compares the inductance detection values obtained when measuring the bottom surface of the sediment layer with the inductance detection calibration information, and calculates the average value of each matched sediment thickness detection value, and finally displays The sediment thickness detection value and average value of each measurement.

In the above sediment thickness measurement method, as another preferred solution, the steps 1) to 3) are repeated multiple times to obtain multiple inductance detection values when measuring the bottom surface of the sediment layer; in the step 4), the inductance The inductance detection and display device of the type sediment thickness measuring instrument matches and compares the inductance detection values obtained when measuring the bottom surface of the sediment layer with the inductance detection calibration information, and determines the maximum value of each matched sediment thickness detection value as The measured sediment thickness value is displayed.

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

1. The inductive sediment thickness measuring instrument of the present invention utilizes the principle of electromagnetic induction to realize sediment thickness measurement, and its design is ingenious, reliable, and easy to assemble and operate.

2. The method of using the inductive sediment thickness measuring instrument of the present invention to measure the sediment thickness is very simple. It only needs to slide the detection column vertically in the conductive material ring to drive the connection probe fixed by the detection column to move vertically. Using the probe to insert and detect the position of the bottom surface under the sediment layer, the measured sediment thickness value can be displayed for display. The measurement is easy to use, and is less affected by human factors, and the detection results are objective and true.

3. The inductive sediment thickness measuring instrument and its measuring method of the present invention, because the position detection is implemented by means of the electromagnetic induction principle between the conductive material ring and the inductance coil group, it is not easily disturbed by external factors, so the detection is stable and reliable The utility model has good performance and high measurement accuracy, and the measurement result can be intuitively displayed through the inductance detection display device, and has strong practicability.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of an embodiment of an inductive sediment thickness measuring instrument of the present invention.

Fig. 2 is a cross-sectional structure diagram of the detection column in the inductive sediment thickness measuring instrument of the present invention.

Fig. 3 is a schematic cross-sectional view of the state of the inductive sediment thickness measuring instrument of the present invention shown in Fig. 1 when the lower end of the probe is located at the plane where the measuring support plate is located before the measurement starts.

4 is a schematic cross-sectional view of the state of the inductive sediment thickness measuring instrument of the present invention shown in FIG. 1 when the lower end of the probe is inserted to the lower bottom surface of the sediment layer during measurement.

Fig. 5 is a schematic diagram of the three-dimensional structure of the inductive sediment thickness measuring instrument of the present invention shown in Fig. 1 when the lower end of the probe is inserted into the lower bottom surface of the sediment layer during measurement.

detailed description

The present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

Fig. 1 shows a schematic structural view of a specific embodiment of the inductive sediment thickness measuring instrument of the present invention. As shown in Figure 1, the inductive sediment thickness measuring instrument of the present invention comprises a conductive material ring 7, a detection column 1 which is in the form of a long column and vertically arranged as a whole, and an inductance detection display device 2; the detection column 1 An inductance coil group is arranged vertically inside it, and the inductance coil group is composed of a plurality of inductance coils arranged in series along the vertical direction of the detection column 1 from sparse to dense or from dense to sparse; The conductive material ring 7 is arranged horizontally as a whole, and is fixedly supported on the horizontally arranged measurement support plate 8 through the connecting rod 9, and the measurement support plate 8 is used to be placed flat on the upper surface of the sediment to be measured; the detection column 1 wears It is arranged in the conductive material ring 7 and can slide back and forth vertically. The probe 6 extending vertically downwards is fixedly connected to the detection column 1 through the probe bracket 5. The probe 6 can be vertically extended along with the detection column 1. Slide upwards so that the lower end of the probe is lifted to the plane position where the measurement support plate 8 is located or above, and the lower end of the probe can be inserted down to the measurement position as the detection column 1 slides vertically downward. Below the plane where the support plate 8 is located, it is used to insert down to the bottom of the sediment layer to measure the thickness of the sediment; the inductance detection and display device 2 is electrically connected to the inductance coil group inside the detection column 1, and is used to drive the detection by outputting alternating current The inductance coil group inside the column 1 generates an alternating magnetic field, and the relative position of the conductive material ring 7 on the outside of the detection column 1 when the lower end of the probe is inserted down to the bottom surface of the sediment layer according to the vertical sliding of the detection column 1 Perform conversion processing to obtain the measured sediment thickness value and display it.

The inductive sediment thickness measuring instrument of the present invention utilizes the principle of electromagnetic induction. When the detection column slides vertically to different positions in the conductive material ring, the vertically arranged inductance coil group inside the detection column generates alternating current under the drive of alternating current. After changing the magnetic field, the inductance coil close to the conductive material ring in the inductance coil group will generate electromagnetic induction on the conductive material ring, thereby generating an induced current in the conductive material ring and then generating a corresponding induced magnetic field to react to the inductance coil, making it in the conductive material ring The inductance value of the nearby inductance coil changes, thereby affecting the inductance value of the entire inductance coil group; and, since the multiple inductance coils constituting the inductance coil group are arranged from sparse to dense or from dense to sparse along the vertical direction of the detection column Arranged in such a way that the inductance value of the inductance coil in the inductance coil group is affected differently when the conductive material ring is located at different positions outside the detection column, which leads to different changes in the inductance value of the entire inductance coil group, and the conductive material ring is located at the detection column. There is a one-to-one correspondence between different positions on the outside of the column and different inductance values of the inductance coil group in the detection column; therefore, the inductance detection and display device can determine the corresponding conductive material by detecting the change of the inductance value of the inductance coil group. The relative position of the ring on the outside of the detection column; in the inductive sediment thickness measuring instrument, the measuring support plate is used to be placed flat on the upper surface of the sediment to be measured, and the vertical sliding of the detection column in the conductive material ring can drive it to be fixed. The connected probe moves vertically, so the relative position of the conductive material ring on the outside of the detection column when the lower end of the probe is located at the plane of the measurement support plate can be pre-calibrated, representing the detection position on the upper surface of the sediment layer, and then measured When using the probe to insert and detect the position of the bottom surface of the sediment layer and determine the relative position of the conductive material ring on the outside of the detection column at this time, it represents the detection position of the bottom surface of the sediment layer. Therefore, it can be determined according to the difference between the two relative positions. The measured sediment thickness value realizes the sediment thickness measurement.

In the inductive sediment thickness measuring instrument of the present invention, the conductive material ring is fixedly arranged on the measuring support plate, and the detection column designed to slide vertically in the conductive material ring is fixedly connected to the probe through the probe bracket. The weight of the column and the probe bracket is used as a counterweight, so that the probe can be inserted into the sediment layer more easily during the measurement operation with the help of the counterweight, and the probe can even be inserted directly with the help of the counterweight of the detection column and the probe bracket In the sediment layer, the measurement operation is more convenient. In the specific design, the conductive material ring can be an annular body member made of good conductive materials such as copper and aluminum, or a multi-gate coil structural member made of good conductive materials such as copper and aluminum. The outside can also be packaged with a shell made of non-conductive material to protect the operation of the conductive material ring. The structural design of the detection column 1 is shown in Figure 2, which includes a vertically arranged elongated tubular casing 10, a bottom end cover 11 for sealing the bottom end of the casing, and vertically stacked The inductance coil group 12 is composed of a plurality of inductance coils vertically stacked and connected in series in the casing; wherein, the material of the casing 10 can be non-magnetic material, but it is better to use magnetic material, so that the casing can be used for better conduction. and enhance the influence of electromagnetic induction between the conductive material ring 7 and the inductance coil group 12, thereby making the change of the inductance value of the inductance coil group under the influence of the conductive material ring more obvious and easier to detect. And the lower end of the probe is preferably designed as a needle-shaped tip, which is more convenient for the probe to be inserted into the sediment layer; in addition, as shown in Figure 1, the probe 6 fixedly connected by the probe bracket 5 on the detection column 1 is preferably designed There are multiple probes, the design shown in Figure 1 is 3 probes, of course, more probes can also be designed, so that multiple probes can be used to detect multiple positions of the sediment layer, thereby making the measurement results more accurate , reliable, and the designed multiple probes 6 are preferably evenly distributed along the circumferential direction of the detection column 1 cross-section, which can improve the support stability of the detection column 1 to drive each probe 6 to move and insert the sediment layer. In addition, as shown in Figure 1, it is better to be provided with a probe guide hole corresponding to the position of the probe 6 on the measurement support plate 8, if there are many probes, then the probe guide holes of the measurement support plate are provided correspondingly Multiple, the aperture of the probe guide hole matches the diameter of the probe 6 cross-section, so that the probe 6 can pass through the probe guide hole and can slide back and forth vertically in the probe guide, so that when the sediment During thickness measurement, the probe guide hole can guide the probe, thereby preventing the probe from being easily bent when it is inserted downward into the sediment layer, so as to achieve the purpose of guiding and protecting the probe.

In the inductive sediment thickness measuring instrument of the present invention, a battery may be built in the inductance detection and display device to provide power for itself and the electronic components in the measuring instrument. The location design of the inductance detection and display device has no special requirements in terms of realizing functions, and it can be designed separately from other components or combined with other components; as a preferred design, as shown in Figure 1, The inductance detection and display device 2 is fixedly installed on the top of the detection column 1, which can ensure that the inductance detection and display device 2 is always at a higher position, and it is more convenient to pass the display of the inductance detection and display device 2 when measuring the thickness of the sediment at the construction site Screen 3 observes the sediment thickness value of its measurement display; And, the shell of inductance detection display device 2 can also be provided with lifting ring 4, or design a lifting handle, so that the lifting ring is pulled by rope, or by holding the lifting handle , to drive the inductance detection display device 2 and the detection column 1 to move vertically back and forth as a whole to perform the measurement operation.

For the processing design of the inductance detection and display device in the inductive sediment thickness measuring instrument of the present invention, multiple different processing design forms can be arranged, as long as the detected inductance value information is detected according to the measurement principle of the inductive sediment thickness measuring instrument of the present invention After discrimination and conversion processing, the sediment thickness measurement can be realized. As a preferred implementation scheme of the present invention, the inductance detection calibration information can be pre-stored and recorded in the inductance detection display device, and the inductance detection calibration information is used to indicate that the corresponding conductive material ring when different inductance values are detected The relative position of the outer side, and in the inductance detection calibration information, when the detection column is slid vertically so that the lower end of the probe is located at the plane where the measuring support plate is located, the relative position of the conductive material ring on the outer side of the detection column is marked as the sediment thickness zero point value , sliding the detection column vertically so that the lower end of the probe is inserted to different depths below the plane where the measuring support plate is located, the relative position of the conductive material ring on the outside of the detection column is marked as having a corresponding depth to the position of the zero point value of the sediment thickness poor sediment thickness detection value; the inductance detection calibration information can be obtained through pre-state calibration; in this way, the inductance detection display device "determines the relative position of the conductive material ring on the outside of the detection column according to the detected inductance value, and according to the detection When the column slides vertically so that the lower end of the probe is inserted down to the position of the bottom surface of the sediment layer, the relative position of the conductive material ring on the outside of the detection column is converted to obtain the measured sediment thickness value" can be designed. It is: when the inductance detection and display device respectively drives the inductance coil group inside the detection column to generate an alternating magnetic field through the output alternating current, slide the detection column vertically so that the lower end of the probe is inserted down to the bottom of the sediment layer The detected inductance value of the inductance coil group is matched and compared with the inductance detection calibration information, and the matched sediment thickness detection value can be determined as the measured sediment thickness value; this can make the detection process of the inductance detection display device more efficient. It is simple and easier to implement, and at the same time, it is more conducive to improving the efficiency of detection and processing, so that the inductance detection and display device can process and obtain detection results more quickly.

Therefore, the specific operation process of using the inductive sediment thickness measuring instrument of the present invention to measure the sediment thickness includes the following steps:

1) Adjust the relative position of the detection column and the conductive material ring in the inductive sediment thickness measuring instrument so that the lower end of the probe is located at the plane where the measuring support plate is located. Fig. 3 shows a schematic sectional view of the state of the inductive sediment thickness measuring instrument of the present invention shown in Fig. 1 when the lower end of the probe is located at the plane position of the measuring support plate before starting the measurement (in order to avoid the sectional view displaying too complicated a structure For confusion, the inductance detection display device in the measuring instrument is not shown in Figure 3).

2) Place the inductive sediment thickness measuring instrument at the position of the sediment to be measured, so that the measuring support plate of the inductive sediment thickness measuring instrument is placed flat on the upper surface of the sediment to be measured and the detection column is in a vertical state;

3) Operate the detection column of the inductive sediment thickness measuring instrument to slide vertically downward in the conductive material ring, drive the probe to insert downward into the sediment layer, and stop until the lower end of the probe is inserted to the lower bottom of the sediment layer, and then The inductance value of the inductance coil group in the current detection column is detected and recorded by the inductance detection and display device as the inductance detection value when measuring the bottom surface of the sediment layer. Fig. 4 and Fig. 5 respectively show the state cross-sectional schematic view and three-dimensional structural schematic view of the inductive sediment thickness measuring instrument of the present invention shown in Fig. 1 when the lower end of the probe is inserted into the lower bottom surface of the sediment layer during measurement.

4) The inductance detection and display device of the inductive sediment thickness measuring instrument matches and compares the inductance detection value when measuring the bottom surface of the sediment layer with the inductance detection calibration information, and determines the measured sediment thickness value according to the matched sediment thickness detection value, and to be displayed.

In Fig. 3 to Fig. 5, the meanings of the symbols are the same as those in Fig. 1 and Fig. 2 .

It can be seen from the above process that the operation of using the inductive sediment thickness measuring instrument of the present invention to measure the sediment thickness is very simple. It only needs to operate the detection column to slide vertically in the conductive material ring to drive the connecting probe fixed by the detection column to vertically Move to the direction, use the probe to insert and detect the position of the bottom surface under the sediment layer, and the measured sediment thickness value can be displayed for display. The measurement is easy to use, and is less affected by human factors, and the detection results are objective and true.

In the measurement process, if accidental errors occur in order to avoid a single measurement, the inductive sediment thickness measuring instrument of the present invention can also be used to perform multiple measurements to realize sediment thickness measurement; the specific implementation method is: Steps 1) to 3) in the above sediment thickness measurement method are repeated multiple times to obtain multiple inductance detection values when measuring the bottom surface of the sediment layer; and in step 4), the inductance detection and display device of the inductive sediment thickness measuring instrument The inductance detection values obtained when measuring the bottom surface of the sediment layer are matched and compared with the inductance detection calibration information, and then according to different actual measurement requirements, the average value of each matched sediment thickness detection value can be determined to determine the The measured sediment thickness value finally displays the sediment thickness detection value and the average value of each measurement, or only determines the maximum value among the matched sediment thickness detection values as the measured sediment thickness value for display. Therefore, after multiple measurements, the inductance detection and display device of the inductive sediment thickness measuring instrument automatically calculates the average value or takes the maximum value to determine the measured sediment thickness value and display it, which can effectively reduce or even avoid measurement errors. Accidental errors further ensure the accuracy of the measurement.

In summary, it can be seen that the inductive sediment thickness measuring instrument and its measuring method of the present invention are not easily disturbed by external factors due to the principle of electromagnetic induction between the conductive material ring and the inductive coil group for position detection. Therefore, the stability and reliability of the detection are good. At the same time, because the multiple inductance coils forming the inductance coil group are arranged in a manner from sparse to dense or from dense to sparse along the vertical direction of the detection column, the conductive material ring is located on the detection column. There is a one-to-one correspondence between different positions on the outside and different inductance values of the inductance coil group in the detection column, so the inductive sediment thickness measuring instrument of the present invention can have higher measurement accuracy, and its measurement results can be displayed through inductance detection The device is intuitively displayed and has strong practicability. It can be seen that the inductive sediment thickness measuring instrument and its measuring method of the present invention have well overcome the defects that the existing sediment thickness measurement technology is greatly affected by human factors, cumbersome to operate, low in measurement accuracy, and not strong in practicability of the instrument .

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or Equivalent replacements without departing from the spirit and scope of the technical solutions of the present invention shall be covered by the scope of the claims of the present invention.

Claims (10)

1. a kind of inductance type sediment thickness measuring instrument, it is characterised in that including a conductive material ring（7）, an entirety is in length Bar column and vertically arranged detection post（1）, and an inductance detection display device（2）；The detection post（1）It is internal along it Inductance coil group is vertically provided with, the inductance coil group is by edge detection post（1）It is vertical be in by dredge it is close or by close to thin Multiple inductance coils that mode is arranged are in series and constituted；

The conductive material ring（7）It is overall laterally to set, and pass through connecting rod（9）It is fixedly supported on the measurement supporting plate of laterally setting （8）On, the measurement supporting plate（8）The sediment upper surface measured for lying in；

The detection post（1）It is located in conductive material ring（7）It is interior and can vertically come and go slip, detect post（1）It is upper to pass through spy Needle rack（5）It is fixedly connected with the probe extended vertically downwards（6）, the probe（6）Can be with detection post（1）Vertically upward Slip and cause probe bottom above carried to measurement supporting plate（8）At the plan-position of place or more, and can be with Detect post（1）Slip vertically downwards and cause the bottom of probe to be inserted to measurement supporting plate by under（8）Below the plane of place, use It is inserted under at sediment layer bottom surface position and carries out sediment thickness measurement；

The inductance detection display device（2）With detection post（1）Internal inductance coil group is electrically connected, for passing through output Alternating current drives detection post（1）Internal inductance coil group produces alternating magnetic field, and detects the inductance value of inductance coil group, according to The inductance value detected determines conductive material ring（7）In detection post（1）The relative position in outside, and according to detection post（1）Vertically Slide and cause the bottom of probe to be inserted to conductive material ring when at sediment layer bottom surface position by under（7）In detection post（1）Outside The relative position of side carries out conversion processing and obtains measured sediment thickness value, and is shown.

2. inductance type sediment thickness measuring instrument according to claim 1, it is characterised in that the detection post（1）Including perpendicular To the sleeve pipe of the strip tubular of setting（10）, the bottom cover covered to the bottom of sleeve pipe（11）, and be vertically stacked and set Put in sleeve pipe and inductance coil group in series is vertically stacked by multiple inductance coils（12）.

3. inductance type sediment thickness measuring instrument according to claim 2, it is characterised in that described sleeve pipe（10）Material it is excellent Elect permeability magnetic material as.

4. inductance type sediment thickness measuring instrument according to claim 1, it is characterised in that the detection post（1）On pass through Probe support（5）The probe being fixedly connected（6）There are many, and along detection post（1）The circumference in cross section is uniformly distributed setting.

5. inductance type sediment thickness measuring instrument according to claim 1, it is characterised in that the measurement supporting plate（8）On Corresponding to probe（6）Probe pilot hole, the aperture of the probe pilot hole and probe are provided with position（6）Cross section Diameter matches so that probe（6）Slip can be come and gone through probe pilot hole and vertically in probe guiding.

6. inductance type sediment thickness measuring instrument according to claim 1, it is characterised in that the inductance detection display device （2）It is fixedly mounted on detection post（1）Top, and inductance detection display device（2）Shell on be additionally provided with carrying handle or Suspension ring.

7. inductance type sediment thickness measuring instrument according to claim 1, it is characterised in that the inductance detection display device In prestore record and there is inductance detection to demarcate information, inductance detection demarcation information detects different induction value to indicate When relative position on the outside of detection post of corresponding conductive material ring, and in inductance detection demarcation information, detection post is erected The lower end part for causing probe to sliding conductive material ring when where measuring supporting plate at plan-position is being detected on the outside of post Relative position is labeled as sediment thickness zero point value, will detect that post is vertically slidable so that the bottom of probe is inserted to measurement support by under Relative position of the conductive material ring on the outside of detection post is labeled as during different depth below plane where plate and the sediment is thick Degree zero point value position has the sediment thickness detected value of respective depth difference；Inductance detection display device is " according to the inductance detected Value determine conductive material ring detection post on the outside of relative position, and according to detection post it is vertically slidable and cause probe bottom Relative position of the conductive material ring on the outside of detection post when at sediment layer bottom surface position is inserted to by under to carry out conversion processing and obtain To measured sediment thickness value " concrete mode be：

Detection post internal inductance coil group is driven to produce alternating magnetic field respectively by exporting alternating current in inductance detection display device In the state of, post will be detected vertically slidable and so that the bottom of probe is detected when being inserted to by under at sediment layer bottom surface position Inductance value and inductance detection the demarcation information of inductance coil group carry out matching and compare, the sediment thickness detected value that will match to is true It is set to measured sediment thickness value.

8. a kind of sediment thickness measuring method, it is characterised in that using inductance type sediment thickness as claimed in claim 1 measurement Prestoring record in instrument progress sediment thickness measurement, and the inductance detection display device of inductance type sediment thickness measuring instrument has electricity Sense detection demarcation information, the inductance detection demarcates information to indicate to detect conductive material corresponding during different induction value Relative position of the ring on the outside of detection post, and in inductance detection demarcation information, will detect that post is vertically slidable and cause under probe Relative position of the conductive material ring on the outside of detection post is labeled as sediment when where end being located at measurement supporting plate at plan-position Thickness zero point value, will detect that post is vertically slidable so that the bottom of probe is inserted to below the plane of measurement supporting plate place not by under Relative position of the conductive material ring on the outside of detection post is labeled as having phase with the sediment thickness zero point value position during with depth Answer the sediment thickness detected value of depth difference；

The sediment thickness measuring method specifically includes following steps：

1）Adjust the relative position of detection post and conductive material ring in inductance type sediment thickness measuring instrument so that the bottom of probe At the plan-position of measurement supporting plate place；

2）Inductance type sediment thickness measuring instrument is placed at measured sediment position so that inductance type sediment thickness measuring instrument Measurement supporting plate lie on measured sediment upper surface and detection post is in vertical state；

3）The detection post of operation inductance type sediment thickness measuring instrument is slided vertically downwards in conductive material ring, drives probe downward Sediment layer is inserted, until the bottom of probe stops when being inserted to the bottom surface position of sediment layer, is then shown by inductance detection Device detects and recorded the inductance value of the inductance coil group in current detection post, is used as inductance during measurement sediment layer bottom surface to examine Measured value；

4）The inductance detection display device of inductance type sediment thickness measuring instrument by measure sediment layer bottom surface when inductance detection value Matching is carried out with inductance detection demarcation information to compare, and measured sediment thickness is determined according to the sediment thickness detected value matched Value, and shown.

9. sediment thickness measuring method according to claim 8, it is characterised in that the step 1）~3）Repeat many It is secondary, obtain inductance detection value during multiple measurement sediment layer bottom surfaces；The step 4）In, inductance type sediment thickness measuring instrument Inductance detection display device demarcates inductance detection value during each obtained measurement sediment layer bottom surface with inductance detection respectively Information carries out matching control, and each sediment thickness detected value averaged to matching, and finally shows each measurement Sediment thickness detected value and average value.

10. sediment thickness measuring method according to claim 8, it is characterised in that the step 1）~3）Repeat many It is secondary, obtain inductance detection value during multiple measurement sediment layer bottom surfaces；The step 4）In, inductance type sediment thickness measuring instrument Inductance detection display device demarcates inductance detection value during each obtained measurement sediment layer bottom surface with inductance detection respectively It is thick that the maximum that information is carried out in matching control, and each sediment thickness detected value that will match to is defined as measured sediment Angle value, is shown.