CN112253442A - Piston device for reviving failure pressure measuring tube and method thereof - Google Patents

Abstract

The invention discloses a piston device for a reactivation failure pressure measuring tube and a method thereof, wherein the piston device comprises: a support member; the water pump is arranged on the support piece; the stamping unit extends into the pressure measuring pipe and is communicated with the water pump; and the lifting unit is arranged on the support and is connected with the upper end of the stamping unit. The method for reactivating the failed pressure measuring pipe comprises the step of reactivating the pressure measuring pipe by adopting a piston device. The invention solves the technical problem that the pressure measuring pipe in the prior art is difficult to process after failure or the water level change is insensitive after processing.

Description

Piston device for reviving failure pressure measuring tube and method thereof

Technical Field

The invention relates to the technical field of seepage monitoring devices, in particular to a piston device for a reactivation failure pressure measuring tube and a method thereof.

Background

The pressure measuring pipe is widely applied to hydraulic engineering and has a very important effect on observing the underground water level of a hydraulic structure, and water level data in the pressure measuring pipe is an important index for judging whether the hydraulic structure is safe or not. The internal safety monitoring of the hydraulic structure is mainly realized by adopting a pressure measuring pipe mode, and can be assisted by an automatic monitoring system to know the internal uplift pressure change of the hydraulic structure at any time.

The water level in the piezometer tube reflects the underground water level of the position of the piezometer tube, and the variation amplitude of the water level in the piezometer tube is closely related to the water level variation of the water body around the site; the water level of upstream and downstream water levels changes rapidly in the flood season, the variation range of the underground water level is extremely large, the pressure measuring pipe is used for accurately and sensitively reflecting the underground water level change caused by the water level change of a field water body, and the water level data measured in the pressure measuring pipe is an important index for analyzing, judging and checking the safety of a hydraulic building. The pressure-measuring pipe section that permeates water is the water conservancy relation with the peripheral ground water level in place, and the pressure-measuring pipe that newly buries underground is intraductal unobstructed in the section that permeates water, but along with the lapse of time, the tiny granule that groundwater flow brought can silt up gradually in the pressure-measuring pipe, and the effective length of pressure-measuring pipe section that permeates water shortens gradually, and its water permeability slowly worsens, and pressure-measuring pipe sensitivity reduces year by year, until losing the efficiency. Many hydraulic structures have built pressure measuring pipes which need to be re-built after a few years.

The existing dredging in the pipe is generally cleaned by water power, a plastic hose is generally used for water flushing, the pressure of water flow is utilized to impact and loosen the sludge in the pipe, and the water flow drives fine particles of the sludge to overflow from the pipe orifice, so that the aim of dredging is fulfilled. The method can theoretically remove the deposits in the pipe, but actually, the pressure measuring pipe cleaned by the method is not very sensitive to the reflection of the change of the underground water level, and the sensitivity of the measured data is poor compared with the data of the original pressure measuring pipe in a new burying stage. The reason for this is two points:

(1) fine soil particles are attached to the geotextile (filter screen) on the outer side of the water-permeable pipe section of the pressure measuring pipe to block a hydraulic channel;

(2) the filter material on the outer side of the permeable pipe section of the piezometric pipe is blocked by fine soil particles, and the water flow is not smooth.

By adopting the method for dredging in the pipe, the reactivated invalid pressure measuring pipe blocks a water flow channel because fine soil particles are attached to the filter screen and the anti-filtering material outside the water permeable pipe, the water level change in the pressure measuring pipe is insensitive, and the engineering requirement of underground water monitoring of hydraulic engineering is difficult to meet, so the pressure measuring pipes embedded in a plurality of hydraulic buildings need to be embedded again after years.

Disclosure of Invention

The invention aims to provide a piston device for a revived and failed pressure measuring pipe and a method thereof, and solves the technical problem that in the prior art, the pressure measuring pipe is difficult to process after failure or the water level change after processing is insensitive.

The embodiment of the application discloses a revive for ineffective pressure cell piston device includes:

a support member;

a water pump mounted on the support;

the stamping unit extends into the pressure measuring pipe and is communicated with the water pump;

and the lifting unit is arranged on the support piece and is connected with the upper end of the stamping unit.

The embodiment of the application discloses a piston device drives the punching press unit through the hoisting unit and reciprocates to change the inside water pressure of piezometer, accomplish the washing away to tiny soil granule, realize the revival of piezometer pipe.

On the basis of the technical scheme, the embodiment of the application can be further improved as follows:

furthermore, the support piece is a trolley, and the beneficial effect of the step is that the position of the embodiment of the application is convenient to adjust through the trolley, so that the application range is improved.

Further, the punching unit includes:

the drill rod is a hollow rod and is communicated with the water pump;

the end part of the connecting rod is connected with the end part of the drill rod, and the connecting rod is a hollow rod;

the through hole is formed in the connecting rod;

the piston sleeve is sleeved on the connecting rod, and the sealing is completed by the contact of the outer wall of the piston sleeve and the inner wall of the pressure measuring pipe so as to realize negative pressure subsequently.

Further, still include flow valve, flow valve installs the free end of connecting rod, the beneficial effect who adopts this step is to carry out flow control through the flow valve to adjust the elasticity of piston sleeve.

Further, still include a plurality of gaskets, the gasket suit is in on the connecting rod, and the gasket is located respectively piston sleeve both ends, adopt this step's beneficial effect to restrict the position of piston sleeve through the gasket.

Further, the lifting unit includes:

the supporting rod is vertically arranged and mounted on the supporting piece;

the reversing wheel is arranged at the upper end of the supporting rod;

a hoist mounted on the support;

the hoisting device comprises a steel wire rope, wherein one end of the steel wire rope is connected with the upper end of the drill rod, the other end of the steel wire rope is connected with the winch, and the hoisting device has the beneficial effect that the drill rod can be hoisted through the hoisting unit.

The embodiment of the application also discloses a method for reactivating the failed pressure measuring pipe, which comprises the following steps:

step S1: selecting the piston device;

step S2: starting the lifting unit to enable the stamping unit to extend into the pressure measuring pipe;

step S3: the water pump is started, and the interior of the pressure measuring pipe is flushed through the punching unit;

step S4: rapidly pulling up the stamping unit by using a lifting unit to form local negative pressure; then the piston device is quickly descended to form local high pressure; and continuously and repeatedly pulling up and descending the stamping unit until no muddy water emerges, namely completing the reactivation operation of the failed pressure measuring pipe.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

1. the pressure measuring pipe with the restoration function can be reactivated, the service life of the existing pressure measuring pipe can be effectively prolonged, secondary or repeated embedding of the pressure measuring pipe is reduced, engineering investment is saved, and the pressure measuring pipe with the restoration function has wide popularization value in the engineering fields of water conservancy, hydropower and the like.

2. The piston device in the embodiment of the application has the advantages of convenience in processing, high use reliability, easiness in installation and the like.

3. The embodiment of the application adopts an in-pipe in-situ cleaning technology, creatively adopts a pressure measuring pipe cleaning technology of high-pressure loosening, negative-pressure adsorption and piston forced drainage, can clean out sludge in the pressure measuring pipe and fine soil particles blocked among filter screen holes and filter material particle gaps outside the pressure measuring pipe, can effectively ensure the smoothness of hydraulic passages inside and outside the pressure measuring pipe, and enables the failed pressure measuring pipe to be fresh and youthful.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a piston device for a reactivation failure pressure measuring tube and a method thereof according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a punching unit of a piston device for a reactivation failure pressure measuring tube and a method thereof according to an embodiment of the present invention;

reference numerals:

1-a support; 2-a water pump; 3-a stamping unit; 4-a lifting unit; 5-a flow valve; 6-a gasket; 7-piezometric tube;

301-a drill rod; 302-connecting rod; 303-a through hole; 304-a piston sleeve;

401-support bars; 402-a reversing wheel; 403-a winch; 404-wire rope.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.

In the description of the present application, it is to be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The piston device for the reviving failure pressure measuring pipe and the method thereof solve the technical problem that the pressure measuring pipe in the prior art is difficult to process after failure or insensitive to water level change after processing.

The general idea of the embodiment of the application is as follows: regarding the piston device, the embodiment of the application can adjust the tightness of the piston through the water pump, so that the pressure difference between the inside and the outside of the piezometer pipe is adjusted, and therefore the continuous flushing of the piezometer pipe is completed, and the piezometer pipe is revived. The revival method is characterized in that the pressure measuring pipe is continuously and repeatedly pulled up and down through the piston device to complete flushing of the pressure measuring pipe.

In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the detailed description.

Example 1

As shown in fig. 1-2, the present embodiment provides a piston device for reactivating a failed pressure measuring tube, including:

the support 1, the support 1 can be a trolley or other plate-shaped supports, and can be used for placing other components;

the water pump 2 is installed on the support part 1, and the water pump 2 is used for providing pressure;

the stamping unit 3 extends into the pressure measuring pipe, the stamping unit 3 is communicated with the water pump 2, and the outer wall of the stamping unit 3 is in contact with the inner wall of the pressure measuring pipe, so that the stamping unit 3 can finish flushing the pressure measuring pipe when moving up and down;

lifting unit 4, lifting unit 4 installs on support piece 1, and lifting unit 4 with 3 upper end connections of punching press unit, lifting unit 4 in this application embodiment is the power spare, drives support piece 1 and reciprocates.

Specifically, as shown in fig. 1 and 2, the punching unit 3 includes:

the drill rod 301 is a hollow rod, and the drill rod 301 is communicated with the water pump 2;

a connecting rod 302, wherein the end of the connecting rod 302 is connected with the end of the drill rod 301, and the connecting rod is a hollow rod;

a through hole 303, wherein the through hole 303 is formed in the connecting rod 302, and the through hole 303 is positioned inside the piston sleeve 304;

a piston sleeve 304, wherein the piston sleeve 304 is sleeved on the connecting rod 302; in the embodiment of the present application, the punching unit 3 includes a hollow drill rod 301 and a hollow connecting rod 302, wherein the drill rod 301 and the connecting rod 302 are in a communicated state, when the water pump 2 is opened, water flow can enter the connecting rod 302 from the drill rod 301, and a through hole 303 is formed in the connecting rod 302, when the water flow flows out from the through hole 303, the water flow can abut against the piston sleeve 304, and the outer wall of the piston sleeve 304 is in contact with the inner wall of the pressure measuring tube, so that sealing can be completed, and the remaining water flow can go out from the end of the connecting rod 302 and enter the bottom of.

The embodiment of the present application further includes a flow valve 5, the flow valve 5 is installed at the free end of the connecting rod 302, and the flow valve 5 in the embodiment of the present application adjusts the water feeding pressure acting on the piston sleeve 304, so as to control the expansion size of the rubber tube.

The embodiment of the present application further includes a plurality of gaskets 6, where the gaskets 6 are sleeved on the connecting rod 302, and the gaskets are respectively located at two ends of the piston sleeve 304; the spacer 6 in the embodiment of the present application serves to limit the position of the piston sleeve 304 such that the through hole 303 is located inside the piston sleeve 304.

Wherein the lifting unit 4 comprises:

the supporting rod 401 is vertically arranged and installed on the supporting member 1;

the reversing wheel 402 is arranged at the upper end of the supporting rod 401;

a hoist 403, the hoist 403 being mounted on the support 401;

one end of the steel wire rope 404 is connected with the upper end of the drill rod 301, and the other end of the steel wire rope 404 is connected with the winch 403; the drilling rods 301 and 302 in the embodiment of the application are all metal pieces, the drilling rods are rapidly descended by the aid of the connecting rods, and when the drilling rods need to be lifted, the drilling rods 301 are driven to move upwards through the winch 403, so that lifting operation is completed.

The drill rod 301 and the connecting rod 302 in the embodiment of the application are both made of seamless steel pipes made of the same material and are hollow, the connecting rod 302 is further provided with a through hole 303, so that the water permeability of the connecting rod 302 is greater than 10%, and the piston sleeve is sleeved on the connecting rod 302 and can slightly expand under the pressure of water in the embodiment of the application; the water pressure acting on the piston sleeve is adjusted by the opening and closing degree of the bottom flow valve, so that the expansion size of the piston sleeve is controlled, the outer wall of the piston sleeve 304 and the inner wall of the piezometer tube can be in close contact, and the subsequent negative pressure operation is facilitated.

The embodiment of the application also discloses a method for reactivating the failed pressure measuring pipe, which comprises the following steps:

step S1: selecting the piston device;

step S2: starting the lifting unit to enable the stamping unit to extend into the pressure measuring pipe, namely enabling a connecting rod 302 of the stamping unit to be located inside the pressure measuring pipe, and enabling the outer wall of a piston sleeve 304 to be in contact with the inner wall of the pressure measuring pipe;

step S3: and (3) opening the water pump, and flushing the interior of the pressure measuring pipe through the stamping unit, wherein the specific flushing method is to change the pressure difference of the water flow inside and outside the pressure measuring pipe and utilize the change of the water flow pressure inside the pressure measuring pipe. When the pressure of the water flow in the pressure measuring pipe is higher than the pressure of the water level outside the pressure measuring pipe, the water flow in the pressure measuring pipe plays a role in loosening attachments (fine soil particles) outside the pressure measuring pipe; when the pressure of the water flow in the piezometer tube is lower than the pressure of the water level outside the piezometer tube, the water flow in the piezometer tube has an adsorption effect on attachments (fine soil particles) outside the piezometer tube, so that the attachments (fine soil particles) outside the piezometer tube are washed and eroded continuously, the attachments (fine soil particles) eroded are mixed with the water flow in the piezometer tube to form slurry-water mixed slurry, and the slurry-water mixed slurry is diluted continuously along with the continuous ejection of the water flow at the bottom of the piston device, and formed slurry overflows from a piezometer tube opening;

step S4: rapidly pulling up the stamping unit by using a lifting unit to form local negative pressure; then the piston device is quickly descended to form local high pressure; continuously and repeatedly pulling up and down the stamping unit until no muddy water is emitted, namely completing the reactivation operation of the failed pressure measuring pipe, wherein when the stamping unit is lifted, the piston sleeve rises along the inner wall of the pressure measuring pipe, the bottom of the pressure measuring pipe and a pipe section at the bottom of the piston form negative pressure, underground water outside the pressure measuring pipe is guided to flow into the pipe in a systematic manner, fine soil particles are attached to the geotextile (filter screen) and the filter material outside the water permeable pipe section of the pressure measuring pipe, and the fine soil particles attached to the geotextile (filter screen) and the filter material outside the water permeable pipe section of the pressure measuring pipe are driven by water flow to flow into the pressure measuring pipe to form muddy water mixed liquid; when the winch is closed or runs at low power, the piston sleeve moves downwards until the bottom of the pipe continuously forms a high-pressure water body in the descending process due to the water blocking effect of the piston, and the water body is basically incompressible, so that part of the water body is forced to be pressed into an outside pipe inverse filter material and a soil body, and fine soil particles attached to a geotextile (filter screen) and the inverse filter material outside a water-permeable pipe section of the piezometric pipe are forcibly loosened; part of the water body carries fine soil particles to be discharged upwards along the gap between the piston and the pipe wall.

In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims (7)

1. A piston assembly for reactivating a failed manometric tube, comprising:

a support member;

a water pump mounted on the support;

the stamping unit extends into the pressure measuring pipe and is communicated with the water pump;

and the lifting unit is arranged on the support piece and is connected with the upper end of the stamping unit.

2. The apparatus of claim 1, wherein the support member is a cart.

3. The apparatus of claim 1, wherein the punch unit comprises:

the drill rod is a hollow rod and is communicated with the water pump;

the end part of the connecting rod is connected with the end part of the drill rod, and the connecting rod is a hollow rod;

the through hole is formed in the connecting rod;

and the piston sleeve is sleeved on the connecting rod.

4. A device according to claim 3, further comprising a flow valve mounted at the free end of the connecting rod.

5. The piston device for reactivating the failed manometry pipe as recited in claim 3, further comprising a plurality of gaskets, wherein the gaskets are sleeved on the connecting rod, and the gaskets are respectively arranged at two ends of the piston sleeve.

6. The apparatus of claim 1, wherein the lifting unit comprises:

the supporting rod is vertically arranged and mounted on the supporting piece;

the reversing wheel is arranged at the upper end of the supporting rod;

a hoist mounted on the support;

and one end of the steel wire rope is connected with the upper end of the drill rod, and the other end of the steel wire rope is connected with the winch.

7. A method of reactivating a failed piezometric tube comprising the steps of:

step S1: selecting the piston device of any one of claims 1-6;

step S2: starting the lifting unit to enable the stamping unit to extend into the pressure measuring pipe;

step S3: the water pump is started, and the interior of the pressure measuring pipe is flushed through the punching unit;

step S4: rapidly pulling up the stamping unit by using a lifting unit to form local negative pressure; then the piston device is quickly descended to form local high pressure; and continuously and repeatedly pulling up and descending the stamping unit until no muddy water emerges, namely completing the reactivation operation of the failed pressure measuring pipe.

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