Cleaning and flushing device for pressure measuring pipe of earth and rockfill dam based on negative pressure pumping principle

Abstract

The utility model discloses an earth and rockfill dam piezometric tube cleaning and flushing device based on a pressure pumping negative air principle, which comprises a barrel body, a base is arranged below the barrel body and is arranged at an earth and rockfill dam piezometric tube orifice in a sealing manner, a water inlet pipe is arranged on the side wall of the bottom of the barrel body, a water outlet is arranged on the side wall of the top of the barrel body, a switch valve is arranged on the water inlet pipe, and a drain outlet is arranged on the base. The barrel body is communicated with the pressure measuring pipe through the sewage draining exit, a piston plate is arranged in the barrel body, and the piston plate is controlled by an air cylinder arranged on the barrel body to move up and down; the water inlet device is communicated with a water inlet pipe on the barrel body through a hose; the cleaning pipe and the blow-off pipe extend into the pressure measuring pipe, the top of the cleaning pipe is connected with the water inlet pipe, and the top of the blow-off pipe is connected with a blow-off opening of the suction device. According to the utility model, the water inlet device is connected with the PVC water pipe, deposits are formed into slurry, the piston plate is used for sucking, sewage in the piezometric pipe is discharged, cleaning and sewage discharging of the piezometric pipe are realized, and the device is suitable for piezometric pipes with different depths and pipe diameters and has strong universality.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of water conservancy project safety monitoring facility maintenance, specifically relates to a kind of based on the negative pressure extraction principle of earth and rockfill dam piezometric tube cleaning and flushing device and method. BACKGROUND

[0002] Earth and rockfill dam piezometric tube is used to monitor dam body saturation line and seepage pressure, in the long-term operation process, pipe siltation can lead to data distortion, threaten water conservancy project safety.The traditional cleaning method is mostly high-pressure water gun or air suction method, but there are the following problems:

[0003] 1.high-pressure water gun is limited by pipe length and needs a lot of external water source, high energy consumption;

[0004] 2.air suction method has poor cleaning effect on deep and small silt;

[0005] 3.existing technology cannot clean and drain at the same time;

[0006] 4.existing tools cannot adapt to different pipe diameters and complex silt types.

[0007] Negative pressure extraction principle moves negative pressure air extraction and drainage through connecting rod, which is simple in structure and convenient to operate, but there is no technology to apply the principle to piezometric tube cleaning and drainage.Therefore, a cleaning and drainage device that is simple to operate, adaptable and thoroughly cleaned is urgently needed. UTILITY MODEL CONTENT

[0008] The utility model provides a kind of based on the negative pressure extraction principle of earth and rockfill dam piezometric tube cleaning and flushing device, through water pumping efficient cleaning piezometric tube, utilizes piston type negative pressure suction to remove silt and drain.

[0009] In order to realize the above-mentioned utility model purposes, the utility model takes the following technical solutions:

[0010] A kind of based on the negative pressure extraction principle of earth and rockfill dam piezometric tube cleaning and flushing device, comprising:

[0011] Barrel body, the barrel body is equipped with base seal and arranged in earth and rockfill dam piezometric tube pipe mouth, barrel body bottom sidewall is equipped with water inlet pipe, top sidewall is equipped with water outlet, water inlet pipe is equipped with switch valve, base is equipped with drain outlet, drain outlet is communicated with barrel body and piezometric tube, the barrel body is equipped with piston plate, piston plate moves up and down by the cylinder control of being arranged on barrel body;

[0012] Water inlet device, the water inlet device is communicated with water inlet pipe on barrel body by hose;

[0013] PVC water pipe, the PVC includes cleaning pipe and drain pipe, cleaning pipe and drain pipe are all inserted into piezometric tube, cleaning pipe top is connected with water inlet pipe, drain pipe top is connected with the drain outlet of suction device.

[0014] The further technology of the utility model discloses:

[0015] Preferably, the cleaning pipe is larger than the blow-off pipe in diameter, and the blow-off pipe is arranged inside the cleaning pipe.

[0016] Preferably, the cleaning pipe is provided with holes around the pipe body, and water flows out to wash the wall of the pressure measuring pipe.

[0017] Preferably, the blow-off pipe extends into the bottom of the pressure measuring pipe according to the length of the pressure measuring pipe.

[0018] Preferably, the blow-off port is provided with a first one-way valve, and the piston plate is provided with a second one-way valve, the switch valve is closed, when the piston plate moves upward, the second one-way valve is automatically closed, and the first one-way valve is forced to open, when the piston plate moves downward, the first one-way valve is automatically closed, and the second one-way valve is forced to open.

[0019] The utility model discloses the beneficial effect is:

[0020] The utility model discloses a water inlet device connects PVC water pipe, forms sludge with silt, utilizes piston plate suction, and sewage in pressure measuring pipe is discharged, realizes the cleaning and blow-off of pressure measuring pipe, is applicable to the pressure measuring pipe of different depth and pipe diameter, and the versatility is strong. DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawing needed to be used in the embodiment description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for the ordinary skilled person in the art, other drawings can also be obtained according to these drawings without creating creative labor.

[0022] Fig. 1 It is a kind of based on the schematic diagram of the pressure measuring pipe cleaning and flushing device of earth and stone dam of suction pressure negative space principle;

[0023] Fig. 2 It is the schematic diagram of barrel body structure;

[0024] Fig. 3 It is the schematic diagram of cleaning pipe structure;

[0025] In the drawing: 10. barrel body;11. base;12. pressure measuring pipe;13. water inlet pipe;14. water outlet;15. switch valve;16. piston plate;17. air cylinder;18. first one-way valve;19. second one-way valve;20. water inlet device;21. cleaning pipe;22. blow-off pipe;23. hole;24. hose;25. blow-off port. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] like Figs. 1-3 This embodiment provides a cleaning and flushing device for the piezometer of an earth-rock dam based on the principle of negative pressure vacuum, comprising:

[0028] The barrel body 10 has a base 11 at the bottom that is sealed and mounted on the inlet of the pressure measuring pipe 12 of the earth-rock dam. The bottom side wall of the barrel body 10 has a water inlet pipe 13 and the top side wall has a water outlet 14. The water inlet pipe 13 has a switch valve 15. The base 11 has a drain outlet 25 that connects the barrel body 10 and the pressure measuring pipe 12. The barrel body 10 has a piston plate 16 inside. The piston plate 16 is controlled to move up and down by a cylinder 17 set on the barrel body 10.

[0029] The drain outlet is equipped with a first one-way valve 18 and a second one-way valve 19 on the piston plate 16. The switch valve 15 is closed. When the piston plate 16 moves upward, the second one-way valve 19 automatically closes and the first one-way valve 18 is opened by force. When the piston plate 16 moves downward, the first one-way valve 18 automatically closes and the second one-way valve 19 is opened by force.

[0030] Water inlet device 20, which is connected to water inlet pipe 13 on barrel body 10 via hose 24;

[0031] The PVC water pipe includes a cleaning pipe 21 and a drain pipe 22, both of which extend into the pressure testing pipe 12. The top of the cleaning pipe 21 is connected to the water inlet pipe 13, and the top of the drain pipe 22 is connected to the drain outlet of the suction device.

[0032] The diameter of the cleaning pipe 21 is larger than that of the drain pipe 22, and the drain pipe 22 is placed inside the cleaning pipe 21. The cleaning pipe 21 has holes 23 around its body, through which water flows to flush the wall of the pressure measuring pipe 12. The drain pipe 22 extends to the bottom of the pressure measuring pipe 12 according to its length.

[0033] It should be noted that in this embodiment, the hose is a corrugated steel wire hose, and the water inlet device 20 is a water pump.

[0034] The specific method is as follows:

[0035] Connect the hoses to the outlet 14 and inlet pipe 13 of the water inlet device 20 respectively. Connect the cleaning pipe 21 to the interface of the inlet pipe 13 and the drain pipe 22 to the drain outlet according to the length of the pressure measuring pipe 12.

[0036] Open the switch valve 15 and power on the water pump. Water flows through the hose and through the cleaning pipe 21. High-pressure water jets around the PVC pipe with the opening 23, thereby flushing and cleaning the wall of the pressure measuring pipe 12.

[0037] When the pressure measuring tube 12 is filled with water, disconnect the power supply and close the switch valve 15. Control the piston plate 16 to move up and down inside the tank 10 via the cylinder 17. When the piston plate 16 moves downward, the first one-way valve 18 automatically closes. Due to the air inside the cylinder wall, the second one-way valve 19 is forced to open. The air between the two one-way valves inside the tank 10 flows upward from the bottom and is discharged through the second one-way valve 19. When the piston plate 16 moves upward, the second one-way valve 19 automatically closes, and the first one-way valve 18 is forced to open, drawing the air in the pipe below the first one-way valve 18 into the tank 10. Repeat the up and down movement of the piston plate 16 in the tank 10 to continue discharging the air in the pressure measuring tube 12 through the second one-way valve 19. This cycle repeats until the pipe is gradually evacuated into a vacuum. Then, the sewage in the pressure measuring tube 12 is drawn into the tank 10 from the bottom pipe under atmospheric pressure, passes through the second one-way valve 19, and is discharged from the outlet 14 until all the sewage in the pipe is discharged.

[0038] Repeat the above process until clean water is discharged from outlet 14.

[0039] In this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A flushing device for piezometers of earth-rock dams based on the principle of negative pressure vacuum, characterized in that, include: The barrel body has a base at the bottom that is sealed and mounted on the pressure measuring pipe opening of the earth-rock dam. The bottom side wall of the barrel body has a water inlet pipe and the top side wall has a water outlet. The water inlet pipe has a switch valve and the base has a drain outlet that connects the barrel body and the pressure measuring pipe. The barrel body has a piston plate inside, and the piston plate moves up and down under the control of a cylinder mounted on the barrel body. A water inlet device, wherein the water inlet device is connected to the water inlet pipe on the barrel body via a flexible hose; The PVC water pipe includes a cleaning pipe and a drain pipe, both of which extend into a pressure testing pipe. The top of the cleaning pipe is connected to the inlet pipe, and the top of the drain pipe is connected to the drain outlet of the suction device.

2. The flushing device for the piezometer of an earth-rock dam based on the principle of negative pressure vacuum, as described in claim 1, is characterized in that: The diameter of the cleaning pipe is larger than that of the sewage pipe, and the sewage pipe is placed inside the cleaning pipe.

3. The flushing device for the piezometer of an earth-rock dam based on the principle of negative pressure suction as described in claim 1, characterized in that: The cleaning pipe has holes around its perimeter, through which water flows to flush the walls of the pressure testing pipe.

4. A flushing device for piezometers of earth-rock dams based on the principle of negative pressure suction as described in claim 1, characterized in that: The sewage pipe extends to the bottom of the pressure measuring pipe according to the length of the pressure measuring pipe.

5. A flushing device for piezometers of earth-rock dams based on the principle of negative pressure suction as described in claim 1, characterized in that: The drain outlet is equipped with a first check valve, and the piston plate is equipped with a second check valve. When the switch valve is closed, the second check valve automatically closes and the first check valve opens under force when the piston plate moves upward. When the piston plate moves downward, the first check valve automatically closes and the second check valve opens under force.

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