A rubber bag plugging system for quick safety protection of underground wellheads

Abstract

The present invention discloses a rubber bag plugging system for quick safety protection of underground well mouths, comprising an upper geotextile bag and a lower rubber bag connected to each other, the bottom of the upper geotextile bag and the top of the lower rubber bag are connected by a connector, a through hole arranged along the axis in the vertical direction is opened in the middle of the upper geotextile bag, the connector and the lower rubber bag, a lower part of an air inlet channel is fixed in the through hole, a bottom of a high-pressure hose is connected to the upper part of the air inlet channel, the top of the high-pressure hose passes through the geotextile bag and is connected to an air injection valve, the air injection valve is used to connect an inflation device, and a pressure gauge is installed on the air injection valve to monitor the air pressure of the lower rubber bag in real time, and the upper geotextile bag is filled with light foam soil or clay soil according to the use of the underground well. The use of this system makes the safety protection of underground well mouths faster, safer, more effective and more permanent.

Description

Technical Field

[0001] The invention relates to a rubber bag plugging system, in particular to a rubber bag plugging system which is quickly used for safety protection of underground wellheads. Background Art

[0002] At present, the main methods for dealing with the problem of falling into a well are deep well salvage tools, mechanical excavation, installation of manhole covers, raising the well platform, adding guardrails, erecting warning signs, covering and reinforcing the wellhead, or landfilling. These methods have the following disadvantages: ① Due to the narrow wellhead, deep and dark bottom of the well, rescue is difficult, and deep well salvage tools will not achieve the expected effect. ② Mechanical excavation is time-consuming and labor-intensive, and cannot rescue people who fall into the well in a short time, and the timeliness is poor; ③ Manhole covers are prone to cracking, moving and loosening in daily use. Due to the huge number of manhole covers and easy to cover, all manhole covers cannot be repaired in a short time, which is very likely to cause falling into a well; ④ Measures such as raising the well platform, adding guardrails and warning signs are prone to aging and damage, and need to be replaced periodically, which affects the appearance of the town and the traffic environment; ⑤ Landfill treatment requires a large investment, not only requires a large amount of soil but also has a high cost. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a rubber bag plugging system for the safety protection of underground wellheads, which can quickly, effectively and permanently plug underground wells.

[0004] The present invention discloses a rubber bag plugging system for quickly protecting underground wellheads, comprising an upper geotextile bag and a lower rubber bag connected to each other from top to bottom, wherein the bottom of the upper geotextile bag and the top of the lower rubber bag are connected by a connector, wherein the connector comprises an upper connecting component installed at the inner bottom wall of the upper geotextile bag and a lower connecting component installed at the inner top wall of the lower rubber bag, wherein the upper connecting component comprises an upper flange plate and an upper reinforcing rubber gasket arranged in sequence from top to bottom, wherein the lower connecting component comprises a water-stopping sponge rubber sheet, a lower reinforcing rubber gasket and a lower flange plate arranged in sequence from top to bottom, wherein the upper connecting component, the bottom of the upper geotextile bag, and the lower rubber bag The top of the lower connecting component is fixedly connected by multiple bolts, and a through hole with an axis arranged in the vertical direction is opened in the middle of the upper connecting component, the upper geotextile bag, the lower rubber bladder bag and the lower connecting component. The lower part of an air inlet channel is fixed in the through hole, and the bottom of a high-pressure hose is connected to the upper part of the air inlet channel. A PVC protective tube is sheathed on the high-pressure hose. The upper parts of the high-pressure hose and the PVC protective tube pass through the upper geotextile bag and are fixed to the upper geotextile bag by a binding belt. The top of the high-pressure hose passes through the PVC protective tube and is connected to an injection valve, which is used to connect an inflation device, and a pressure gauge is installed on the injection valve to monitor the air pressure of the lower rubber bladder bag in real time.

[0005] The beneficial effects of the present invention are:

[0006] 1. Low cost, simple structural design of each component, easy production, convenient transportation and installation, and can be used repeatedly for a long time.

[0007] 2. Reduce the investment in manpower, material and financial resources, and the operation is simple. After completion, there is no need to worry about whether the wellhead cover is missing or damaged. You only need to regularly inspect the structure every year to see if there is any damage and whether the air pressure is stable. The inspection is relatively fast.

[0008] 3. Depending on the geographical location and use environment of the underground well, the lower rubber bag can be filled to different degrees to interact with the well wall and provide different bearing capacities; depending on the use status and function of the underground well, the upper geotextile bag can be filled with lightweight foam soil or clay soil. When foam soil is used for filling, the rubber bag combination structure can be easily dismantled to inspect and maintain the facilities in the well.

[0009] 4. As the filling material of the upper geotextile bag is squeezed and compacted, it interacts with the well wall and shares part of the upper load, highlighting the synergy between the upper geotextile bag and the lower rubber bag. Even if the lower rubber bag is damaged and leaks, the upper geotextile bag will act as a buffer, preventing an instantaneous rapid fall, providing escape time and effectively avoiding falling into the well. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic structural diagram of a rubber bag plugging system for quickly protecting the wellhead of an underground well according to the present invention being lowered to a predetermined position in the well;

[0011] Figure 2 for Figure 1 A schematic diagram of the structure of the system after the lower rubber bladder bag is inflated;

[0012] Figure 3 for Figure 1 A schematic diagram of the structure of the upper geotextile bag of the system shown is filled;

[0013] Figure 4-1 for Figure 1 A schematic diagram of the structure of the connector in the system shown;

[0014] Figure 4-2 for Figure 4-1 1-1 cross-sectional view of the connector shown. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0016] As shown in the accompanying drawings, a rubber bag sealing system for rapid safety protection of underground wellheads of the present invention comprises an upper geotextile bag 4 and a lower rubber bag 7 which are connected in upper and lower order, and a connector 6 is used to connect the bottom of the upper geotextile bag 4 and the top of the lower rubber bag 7, and the connector 6 comprises an upper connecting component installed at the inner bottom wall of the upper geotextile bag 4 and a lower connecting component installed at the inner top wall of the lower rubber bag 7, the upper connecting component comprises a flange upper plate 6-8 and an upper reinforcing rubber gasket 6-7 which are arranged in sequence from top to bottom, the lower connecting component comprises a water-stopping sponge film 6-1, a lower reinforcing rubber gasket 6-2 and a flange lower plate 6-4 which are arranged in sequence from top to bottom, and the upper connecting component, the bottom of the upper geotextile bag 4, the lower rubber bag 7 and the top of the lower connecting component are fixedly connected by a plurality of bolts 6-3. A through hole with an axis arranged in the vertical direction is opened in the middle of the upper connecting assembly, the upper geotextile bag 4, the lower rubber bladder bag 7 and the lower connecting assembly, and the lower part of an air inlet channel 6-9 is fixed in the through hole. The bottom of a high-pressure hose 5 is connected to the upper part of the air inlet channel 6-9, and a PVC protective tube 10 is sheathed on the outer surface of the high-pressure hose 5 to protect the hose and the connector during high-pressure inflation. The upper part of the high-pressure hose 5 and the PVC protective tube 10 pass through the upper geotextile bag 4 and are fixed to the upper geotextile bag 4 by a binding belt 13. The top of the high-pressure hose 5 passes through the PVC protective tube 10 and is connected to an air injection valve 1, which is used to connect the inflation device, and the air injection valve 1 is equipped with a pressure gauge for real-time monitoring of the air pressure of the lower rubber bladder bag 7. Preferably, a protective cover 12 is sheathed on the air injection valve 1. Preferably, the contact surfaces of the upper flange plate 6-8 and the lower flange plate 6-4 arranged opposite to each other adopt a concave-convex structure to increase the binding force between the bag material and the flange plate.

[0017] The construction method of this system is as follows:

[0018] 1. Quickly check whether all components can work properly at the storage point, connect the upper geotextile bag 4 and the lower rubber bag 7 with the connector 6, as shown in Figure 4. Cover the high-pressure hose 5 with a PVC protective tube to protect the hose and the connector. Figure 1 shown.

[0019] 2. Lower the rubber bag assembly structure to a predetermined depth, and then use a pressing block 3 to press the end of the upper geotextile bag 4 on the ground 2 around the wellhead to prevent the rubber bag assembly structure from sliding to the bottom of the well 9. Figure 1 shown.

[0020] 3. Connect the air injection valve 1 to the high-pressure hose 5. Then use air 11 to fill the lower rubber bag 7 to a predetermined pressure, close the air injection valve, and wait for a while. Figure 2 As shown, when the pressure gauge value remains unchanged, proceed to the next step, otherwise the lower rubber bladder needs to be repaired or replaced.

[0021] 4. Different filling materials are used depending on whether the underground well 8 is in use. When it is an abandoned well, clay soil is used to fill the upper geotextile bag 4 to gradually form a soil column of a certain height; when it is a used well, lightweight foam soil is used to fill the upper geotextile bag 4 to facilitate dismantling and maintenance. After filling, the ends are restrained and tightened with binding belts, and the inflation port is placed on the upper geotextile bag to facilitate observation of the air pressure of the lower rubber bag. After confirming that the rubber bag assembly structure has no downward sliding and no air leakage, cover the wellhead cover 15 and the installation is completed, as shown in Figure 3.

[0022] 5. Carry out periodic maintenance to prevent the wellhead safety protection structure from failure. Under normal use, the rubber bladder material should be replaced every few decades.

Claims

1. A rubber bag plugging system for quick safety protection of underground wellheads, characterized by: It comprises an upper geotextile bag and a lower rubber bladder bag which are connected to each other from top to bottom. The bottom of the upper geotextile bag and the top of the lower rubber bladder bag are connected by a connector. The connector comprises an upper connecting component installed at the inner bottom wall of the upper geotextile bag and a lower connecting component installed at the inner top wall of the lower rubber bladder bag. The upper connecting component comprises an upper flange plate and an upper reinforced rubber gasket which are arranged in sequence from top to bottom. The lower connecting component comprises a water-stopping sponge film, a lower reinforced rubber gasket and a lower flange plate which are arranged in sequence from top to bottom. The upper connecting component, the bottom of the upper geotextile bag, the lower rubber bladder bag and the top of the lower connecting component are connected by A plurality of bolts are fixedly connected, a through hole with an axis arranged in the vertical direction is opened in the middle of the upper connecting component, the upper geotextile bag, the lower rubber bladder bag and the lower connecting component, the lower part of an air inlet channel is fixed in the through hole, the bottom of a high-pressure hose is connected to the upper part of the air inlet channel, a PVC protective tube is sheathed on the high-pressure hose, the upper parts of the high-pressure hose and the PVC protective tube pass through the upper geotextile bag and are fixed to the upper geotextile bag by a binding belt, the top of the high-pressure hose passes through the PVC protective tube and is connected to an injection valve, the injection valve is used to connect the inflation device, and a pressure gauge is installed on the injection valve to monitor the air pressure of the lower rubber bladder bag in real time.

2. The rubber bag plugging system for rapid safety protection of underground wellheads according to claim 1 is characterized in that: A protective cover is disposed on the gas injection valve jacket.

3. The rubber bag plugging system for rapid safety protection of underground wellheads according to claim 1 or 2, characterized in that: The contact surfaces of the flange upper plate and the flange lower plate which are arranged opposite to each other adopt a concave-convex structure.

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