CN113049040B

CN113049040B - Leakage and sediment sensing device for well-point dewatering

Info

Publication number: CN113049040B
Application number: CN202110289881.3A
Authority: CN
Inventors: 朱芬芳
Original assignee: Nanjing Chaotu Small And Medium Sized Enterprise Information Service Co ltd
Current assignee: Nanjing Chaotu Small And Medium Sized Enterprise Information Service Co ltd
Priority date: 2021-03-18
Filing date: 2021-03-18
Publication date: 2023-07-14
Anticipated expiration: 2041-03-18
Also published as: CN113049040A

Abstract

The invention relates to the technical field of high-precision sensor equipment, and discloses a leakage and sediment sensing device for well-point precipitation. This a leak and silt induction system for well point dewatering is used, under the effect of centrifugal force, catch and deposit silt in the rivers, and then the silt content in the feedback rivers, real-time control is carried out to the muddy condition of rivers, in time discover the rivers muddy, avoid the foundation soil granule to run off, produce phenomenon such as subsidence, fracture, improve the security of construction, secondly, directly detect the velocity of flow condition of rivers at the shaft bottom, know the behavior of water well in real time, for manometer or level sensor, the degree of accuracy is higher with the reliability, still when because the dead well is blocked, can directly lead to the water velocity in the pit to be zero, consequently can in time discover and get rid of.

Description

Leakage and sediment sensing device for well-point dewatering

Technical Field

The invention relates to the technical field of high-precision sensor equipment, in particular to a leakage and sediment sensing device for well-point dewatering.

Background

When the underground water level is high during engineering construction, well-point dewatering construction is generally adopted to reduce the underground water level at the moment so as to drain water in foundation soil and promote soil consolidation, namely, a certain number of water filtering wells are buried around the foundation pit, and water is pumped from the water filtering wells by using water pumping equipment, so that the underground water level is always maintained below the pit bottom elevation until backfilling is completed or the underground structure has enough anti-floating capability.

When pumping water, if the water is turbid all the time, the phenomenon that the water is pumped to cause the loss of soil particles of the foundation soil nearby, sedimentation, cracking and the like is shown, so that the water quality needs to be monitored in the water pumping process, the water is clear, the real-time property cannot be guaranteed in the existing monitoring of the water quality containing sediment, and larger time delay exists.

Secondly, pumping is a dynamic process, namely pumping is performed on one side, meanwhile, groundwater can flow back and be supplemented, because the permeability and the water permeability of stratum at different moments in different sections are different, pumping and backwater can not be in a balanced state at all times, some wells are pumped out quickly, other wells are slower in water level drop, the existing equipment monitors the running state of the equipment through a pressure gauge or a water level sensor, but if the equipment is located on the well, the comprehensive effect of leakage and blockage can influence the accuracy of monitoring the running of the equipment, and the equipment is located underground, and sediment and the like can reduce the reliability and the service life of the equipment. In addition, in the water pumping process, whether a dead well is blocked or not is checked, and when the dead well is too much and the dewatering effect is seriously affected, whether the dead well is generated or not is checked by manual inspection, and the hysteresis is larger.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides a technical scheme of a leakage and sediment sensing device for well-point precipitation, which is suitable for light well-point precipitation, has the advantages of high accuracy, good reliability, real-time detection of sediment content and the like, and solves the problems proposed by the background technology.

The invention provides the following technical scheme: the utility model provides a leak and silt induction system for well point dewatering is used, includes the installation tube, the inside fixedly connected with installation piece of installation tube, the up and down terminal surface of installation piece is connected with first connecting pipe and second connecting pipe respectively, all be connected through the elastic component between first connecting pipe and second connecting pipe and the installation piece, the inner wall fixedly connected with second tile of second connecting pipe, the inner wall fixedly connected with first tile of first connecting pipe, first tile and second tile are crisscross to be set up, every two be equipped with the expansion plate between first tile and the second tile, first tile, second tile and expansion plate make up into "Z" font passageway, the expansion plate is scalable, be equipped with first sensor between first connecting pipe and the installation piece, be equipped with the second sensor between installation piece and the second connecting pipe.

Preferably, the lateral wall of first connecting pipe and second connecting pipe is all fixedly connected with spacing, the inside wall of installation pipe is equipped with the spacing groove that corresponds with spacing, all be equipped with waterproof cloth between the terminal surface of installation pipe and second connecting pipe, between the terminal surface of installation pipe and first connecting pipe and between the inside wall of first connecting pipe and second connecting pipe.

Preferably, the first sensor and the second sensor are embedded, and three groups of the first sensor and the second sensor are arranged.

Preferably, the first sensor comprises a first electric plate, a second electric plate and a waterproof sleeve, the waterproof sleeve wraps the first electric plate and the second electric plate, and the structure of the second sensor is the same as that of the first sensor.

Preferably, the surface of the expansion plate is provided with folds.

The invention has the following beneficial effects:

1. this a leak and silt induction system for well point dewatering is used, under the effect of centrifugal force, catch and deposit silt in the rivers, and then the silt content in the feedback rivers carries out real-time control to the muddy condition of rivers, in time discovers the rivers muddy, avoids the foundation soil granule to run off, produces phenomena such as subsidence, fracture, improves the security of construction.

2. This a leak and silt induction system for well point dewatering is used directly detects the velocity of flow condition of rivers at the shaft bottom, knows the behavior of water well in real time, and for manometer or level sensor, degree of accuracy and reliability are higher, secondly when because the dead well of jam, can directly lead to the water velocity in the pit to be zero, consequently can in time discover and get rid of, guarantee the efficiency of dewatering.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a partial schematic view of the present invention;

FIG. 3 is a schematic view of a second connection pipe and a second tile according to the present invention;

FIG. 4 is a schematic diagram of a first sensor according to the present invention;

FIG. 5 is a schematic view of a channel structure formed by a first tile, a second tile and a expansion plate in the structure of the present invention.

In the figure: 1. installing a pipe; 2. a mounting piece; 3. a first connection pipe; 4. a second connection pipe; 5. a first tile; 6. a second tile; 7. a telescoping plate; 8. a first sensor; 81. a first electric plate; 82. a second electric plate; 83. a waterproof jacket; 9. a second sensor; 10. a limit bar; 11. a limit groove; 12. waterproof cloth.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1, a leakage and sediment sensing device for well-point precipitation comprises a mounting tube 1, wherein a mounting plate 2 is fixedly connected inside the mounting tube 1, the mounting plate 2 is arranged in the middle of the mounting tube 1, the upper and lower end surfaces of the mounting plate 2 are respectively connected with a first connecting tube 3 and a second connecting tube 4, the first connecting tube 3 and the second connecting tube 4 are connected with the mounting plate 2 through elastic members, the first connecting tube 3 and the second connecting tube 4 can move relative to the mounting plate 2, and has an initial position under the action of elasticity, the inner wall of the second connecting pipe 4 is fixedly connected with a second tile 6, the inner wall of the first connecting pipe 3 is fixedly connected with a first tile 5, the first tile 5 and the second tile 6 are arranged in a staggered way, a telescopic plate 7 is arranged between each two first tiles 5 and each second tile 6, the first tile 5, the second tile 6 and the telescopic plate 7 are combined into a Z-shaped channel, the telescopic plate 7 is telescopic, after the relative movement of the second tile 6 and the first tile 5, the channel still keeps continuous, a first sensor 8 is arranged between the first connecting pipe 3 and the mounting plate 2, a second sensor 9 is arranged between the mounting plate 2 and the second connecting pipe 4, water flows from bottom to top, if the sediment content is larger, because the centrifugal force is larger as the mass is larger, the water is separated from the flowing water when turning for many times and is gathered on the first tile 5, so that the mass of the first tile 5 is increased, the first tile 5 and the first connecting pipe 3 are driven to move downwards integrally, the first sensor 8 senses the change of the distance, thereby judging the condition of sediment in the water, secondly, the acting force of the second tile 6 is also changed due to the difference of the water flow speed, and the change of the water flow is judged through the interval sensed by the second sensor 9.

Please refer to fig. 2, wherein, the lateral walls of the first connecting pipe 3 and the second connecting pipe 4 are fixedly connected with a limit bar 10, the inside wall of the mounting pipe 1 is provided with a limit groove 11 corresponding to the limit bar 10, the limit bar 10 slides in the limit groove 11 to limit the second connecting pipe 4 and the first connecting pipe 3, so that the first connecting pipe 3 and the second connecting pipe 4 vertically move up and down, the sensing precision of the sensor is ensured, waterproof cloth 12 is arranged between the end surfaces of the mounting pipe 1 and the second connecting pipe 4, between the end surfaces of the mounting pipe 1 and the first connecting pipe 3 and between the inside wall of the first connecting pipe 3 and the inside wall of the second connecting pipe 4, the sediment is prevented from entering the gap, the free sliding of the first connecting pipe 3 and the second connecting pipe 4 is ensured, and the measuring precision is ensured.

Please refer to fig. 3, wherein the first sensor 8 and the second sensor 9 are embedded, so as to reduce the exposed and occupied volume, and the number of the first sensor 8 and the second sensor 9 is provided with three groups, and the plurality of angle measurements are summarized, so as to eliminate the influence of uneven stress and improve the precision.

Referring to fig. 4, the first sensor 8 includes a first electric plate 81, a second electric plate 82 and a waterproof sleeve 83, the waterproof sleeve 83 wraps and seals the first electric plate 81 and the second electric plate 82, the structure of the second sensor 9 is the same as that of the first sensor 8, two ends of the first sensor 8 and the second sensor 9 are fixedly connected with the end faces of the first connecting pipe 3, the mounting plate 2 and the second connecting pipe 4 respectively, and the change of the distance is utilized to change the size of the capacitor to track the change of the distance.

Referring to fig. 5, the surface of the expansion plate 7 is provided with folds, when the water flows along the surfaces of the first tile 5 and the second tile 6, the larger the mass is, the larger the centrifugal force is, and the sand moves to the folds of the expansion plate 7 against the inner wall to be blocked, so that the sand is further separated from the water flow.

The working principle and the working flow of the invention are as follows:

the device is fixed on the inner wall of the water suction pipe through the mounting pipe 1, water flows into a channel formed by the first tile 5, the expansion plate 7 and the second connecting pipe 4, water pressure acts on the second tile 6 to enable the second tile 6 to move upwards, the change condition of the feedback water flow is changed through the feedback distance of the second sensor 9, sediment can be precipitated under the action of centrifugal force when the sediment content is overlarge in the water flow and passes through the channel, larger precipitation can be generated when the sediment content is overlarge, the sediment content is determined through the detection displacement of the first sensor 8, the water flow acting force received by the first tile 5 can be calculated and eliminated through the acting force received by the second tile 6, and the more accurate sediment quantity is obtained.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A leak and silt induction system for well point dewatering is used, includes installation pipe (1), the inside fixedly connected with installation piece (2) of installation pipe (1), its characterized in that: the utility model discloses a limit limiting device for a high-speed water heater, including installation piece (2) and first connecting pipe (3) and second connecting pipe (4) are connected with respectively to up and down terminal surface of installation piece (2), all be connected through the elastic component between first connecting pipe (3) and second connecting pipe (4) and installation piece (2), the inner wall fixedly connected with second tile (6) of second connecting pipe (4), the inner wall fixedly connected with first tile (5) of first connecting pipe (3), first tile (5) and second tile (6) are crisscross to be set up, every two be equipped with expansion plate (7) between first tile (5) and second tile (6), first tile (5), second tile (6) and expansion plate (7) make up into "Z" font passageway, expansion plate (7) are scalable, be equipped with first sensor (8) between first connecting pipe (3) and installation piece (2), be equipped with second sensor (9) between installation piece (2) and second connecting pipe (4), first connecting pipe (3) and second connecting pipe (4) are crisscross to be equipped with expansion plate (7) and the terminal surface of second connecting pipe (4) are equipped with limit limiting groove (10) between the terminal surface of first connecting pipe (1) and second connecting pipe (4) and the limit limiting device (10) Waterproof cloth (12) is arranged between the end surfaces of the mounting pipe (1) and the first connecting pipe (3) and between the inner side walls of the first connecting pipe (3) and the second connecting pipe (4);

the installation pipe (1) is fixed at the inner wall of the water suction pipe, water flows into a channel formed by a first tile (5), a telescopic plate (7) and a second connecting pipe (4), water pressure acts on a second tile (6), the second tile (6) moves upwards, the change condition of feedback water flow is changed through the feedback distance of a second sensor (9), the sediment content is determined through the detection displacement of a first sensor (8), and the water flow acting force received by the first tile (5) is calculated and eliminated through the acting force received by the second tile (6), so that the accurate sediment quantity is obtained.

2. A leak and silt sensing apparatus for well-point precipitation according to claim 1, wherein: the first sensors (8) and the second sensors (9) are installed in an embedded mode, and three groups of the first sensors (8) and the second sensors (9) are arranged in number.

3. A leak and silt sensing apparatus for well-point precipitation according to claim 1, wherein: the first sensor (8) comprises a first electric plate (81), a second electric plate (82) and a waterproof sleeve (83), the waterproof sleeve (83) wraps and seals the first electric plate (81) and the second electric plate (82), and the structure of the second sensor (9) is the same as that of the first sensor (8).

4. A leak and silt sensing apparatus for well-point precipitation according to claim 1, wherein: the surface of the expansion plate (7) is provided with folds.