A process for grouting steel flower pipe and stopping grouting

Abstract

The present application relates to steel flower pipe grouting and stopping grouting technical field, provide a kind of grouting steel flower pipe and the process of stopping grouting, this process uses auxiliary device to steel flower pipe grouting, and stopping grouting is carried out to steel flower by auxiliary device with grouting plug, process steps are: by the piston that can be positioned plunger rod, piston is shrunk to grouting plug supplement storehouse outside, grouting plug is supplemented from grouting plug supplement storehouse;By the piston that can be positioned plunger rod, grouting plug is pushed to grouting plug supplement storehouse and grouting pipe between by piston;Steel flower pipe connecting port and steel flower pipe are connected using connecting pipe;Grouting is injected into grouting pipe through grouting port, grouting enters steel flower pipe in sequence through grouting port and steel flower pipe connecting port;Grouting amount in steel flower pipe reaches requirement, and grouting is stopped;By the piston that can be positioned plunger rod, grouting plug is pushed into steel flower pipe by piston, and grouting and stopping grouting are completed;Connecting pipe and operating pipe are dismantled, and operation is completed.The present application can quickly complete steel flower pipe grouting operation and complete the installation of grouting plug, and stop grouting to steel flower pipe.

Description

Technical Field

[0001] This invention relates to the field of grouting and grout-stopping technology for steel pipe grouting, and particularly to a process for grouting steel pipe grouting and grout-stopping. Background Technology

[0002] According to the construction process requirements of grouting steel pipe projects, after grouting is completed, a grout stopper must be installed promptly to prevent grout overflow. However, due to the use of pressure-driven grouting and the requirement for the steel pipe to be installed at a certain angle, grout is prone to backflow and overflow not only due to pressure but also due to gravity. Therefore, a process for grouting steel pipes and stopping the grout overflow is provided to meet the technical requirements of rapid grouting and preventing grout overflow during grout stopping. Summary of the Invention

[0003] The purpose of this invention is to provide a process for grouting steel pipes and stopping grouting, in order to solve the technical problems involved in the background art.

[0004] The technical solution of this invention: A process for grouting and stopping grouting in steel pipes, wherein an auxiliary device is used to grout the steel pipes and a grout-stopping plug is used to stop the grouting in the steel pipes through the auxiliary device; The auxiliary device includes a working pipe, one end of which is a steel pipe connection port and the other end is a piston operation port; the side wall of the working pipe is connected to the grouting pipe and has a grout stop plug replenishment chamber, and the grouting pipe is located between the grout stop plug replenishment chamber and the steel pipe connection port; a piston is provided at the piston operation port of the working pipe, and the piston is connected to a positionable piston rod extending out of the piston operation port; the end of the grouting pipe that connects to the working pipe is the grouting port, and the other end is the grout inlet. The process includes the following steps: S1: The piston is retracted outside the grout stop plug replenishment chamber by the positionable piston rod, and the grout stop plug is replenished from the grout stop plug replenishment chamber; S2: The piston is pushed by the positionable piston rod to push the grout stop plug between the grout stop plug replenishment chamber and the grouting pipe; S3: Use a connecting pipe to connect the steel pipe joint to the steel pipe; S4: Grout is injected into the grouting pipe through the grout inlet. The grout enters the steel pipe sequentially through the grout inlet and the steel pipe connection port. S5: Stop grouting once the required amount of grout in the steel pipe has been reached; S6: The piston is pushed by the positionable piston rod and the grout stop plug is pushed into the steel pipe to complete the grouting and grout stop. S7: Disassemble the connecting pipe and the working pipe to complete the operation.

[0005] Furthermore, the length a of the grout stopper replenishment chamber is ≥ the length of the grout stopper to be used.

[0006] Furthermore, the length b of the piston is greater than the length a of the stop plug replenishment chamber.

[0007] Furthermore, the distance c between the grout stopper replenishment chamber and the grout injection port is greater than the length of the grout stopper to be used plus the minimum length of the piston to prevent grout leakage.

[0008] Furthermore, the length b of the piston is greater than the inner diameter e of the grouting pipe.

[0009] Furthermore, the inner diameter d of the working pipe is ≥ the inner diameter of the steel flower pipe.

[0010] Furthermore, the inner diameter e of the grouting pipe is less than the length of the stop plug to be used.

[0011] Furthermore, the length b of the piston is greater than the inner diameter e of the grouting pipe plus the distance from the grouting port to the steel pipe connection port. Beneficial effects

[0012] Compared with the prior art, the present invention can complete the grouting operation of the steel pipe and complete the installation of the grout stop plug to achieve grouting stop of the steel pipe. Moreover, the present invention can complete the installation of the grout stop plug without loss of grouting pressure by sealing the grouting port with a long piston, thereby achieving rapid grouting stop and completely preventing grout from flowing into the device. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a cross-sectional structural diagram of the auxiliary device used in this invention; Figure 2 This is a schematic diagram of the structure of the present invention during the pre-installation of the grout stop plug. Figure 1 ; Figure 3 This is a schematic diagram of the structure of the present invention during the pre-installation of the grout stop plug. Figure 2 ; Figure 4 This is a schematic diagram of the structure of the present invention during grouting (the arrow indicates the direction of the grout). Figure 5 This is a schematic diagram of the structure of the present invention during the installation of the grout stopper (short piston). Figure 6 This is a schematic diagram of the structure of the present invention during the installation of the grout stopper (long piston). The markings in the diagram are as follows: 1. Working pipe; 2. Steel pipe connection port; 3. Piston operating port; 4. Grouting pipe; 5. Piston; 6. Grout stop plug replenishment chamber; 7. Positionable piston rod; 8. Grout stop plug; 9. Grout inlet; 10. Connecting pipe; 11. Steel pipe; 12. Grouting port; 13. Implementation

[0015] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0016] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0017] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0018] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] Example 1. A process for grouting and stopping grouting in a steel perforated pipe. This process uses an auxiliary device to grout the steel perforated pipe 12, and uses a grout-stopping plug 8 to stop the grouting in the steel perforated pipe 12 through the auxiliary device. like Figure 1As shown, the auxiliary device includes a working pipe 1, one end of which is a steel pipe connection port 2, and the other end is a piston operation port 3; the side wall of the working pipe 1 is connected to the grouting pipe 4 and has a grout stop plug replenishment chamber 6, the grouting pipe 4 is located between the grout stop plug replenishment chamber 6 and the steel pipe connection port 2; the working pipe 1 has a piston 5 at the piston operation port 3, the piston 5 is connected to a positionable piston rod 7 extending out of the piston operation port 3; the end of the grouting pipe 4 that connects to the working pipe 1 is the grouting port 13, and the other end is the grout inlet 9; When considering grouting and grout stopping for steel pipes of different wall thicknesses, a sealing piston 5 is used, with the following dimensional requirements: The length a of the grout stopper replenishment chamber 6 is ≥ the length of the grout stopper 8 to be used, so that the grout stopper 8 can be put into the grout stopper replenishment chamber 6.

[0021] The length b of the piston 5 is greater than the length a of the slurry stop plug replenishment chamber 6, so that the piston 5 can pass through the slurry stop plug replenishment chamber 6.

[0022] The length c of the connection between the grout stopper replenishment chamber 6 and the grouting pipe 4 and the working pipe 1 is greater than the length of the grout stopper 8 to be used plus the minimum length of the piston 5 to prevent grout leakage, thus ensuring no grout leakage during grouting.

[0023] The length b of the piston 5 is greater than the inner diameter e of the grouting pipe 4 to prevent overflow at the steel pipe connection port 2 and pressure loss inside the steel pipe 12.

[0024] The inner diameter d of the working pipe 1 is greater than or equal to the inner diameter of the steel flower pipe 12, which facilitates the connection between the working pipe 1 and the steel flower pipe 12.

[0025] The working pipe 1 is preferably made of steel pipe.

[0026] The positionable piston rod 7 can be easily manufactured by fixing it to the end of the device with a screw and a nut welded to the rod end. Rotating the screw achieves piston extension and retraction. For faster construction, a hydraulic jack or a torsion rod with limit function can be used to connect the piston rod, which is labor-saving and efficient.

[0027] To achieve rapid construction, a self-locking quick connection is used to connect the steel pipe 12 and the grouting pipe 4. The diameter of the self-locking connecting pipe 11 connecting the steel pipe 12 is larger than the outer diameter of the steel pipe 12 to be grouted, ensuring that the end of the steel pipe 12 to be grouted can be deeply inserted and connected with the steel pipe connection port 2 of the device.

[0028] The gate valve connected at the grout inlet 9 of the grouting pipe 4 is omitted in the figure. The gate valve is used to control the injection of grout.

[0029] Based on the above technology, the specific process steps are as follows: S1: The piston 5 is retracted beyond the grout stop plug replenishment chamber 6 by the positionable piston rod 7, and the grout stop plug 8 is replenished from the grout stop plug replenishment chamber 6; operating condition as follows. Figure 2 As shown; S2: The piston 5 is pushed by the positionable piston rod 7, pushing the grout stop plug 8 between the grout stop plug replenishment chamber 6 and the grouting pipe 4; operating condition as follows. Figure 3 As shown; S3: Use connecting pipe 11 to connect steel pipe connector 2 and steel pipe 12; S4: (Open the gate valve) Inject grout into grouting pipe 4 through grout inlet 9. The grout enters steel pipe 12 sequentially through grouting port 13 and steel pipe connection port 2; operating conditions are as follows: Figure 4 As shown; S5: After the grouting volume in steel pipe 12 reaches the required level, stop grouting (close the gate valve); S6: The positionable piston rod 7 pushes the piston 5 and pushes the grout stop plug 8 into the steel perforated pipe 12 to complete grouting and grout stop; working conditions as follows Figure 5 As shown; S7: Disassemble connecting pipe 11 and working pipe 1 to complete the operation. (After completing the operation, proceed to the next steel pipe grouting and grout stopping process.) During the process, to prevent the grout in the injection pipe 4 from overflowing and contaminating the device when the piston 5 (when using a piston with a sealing effect) or the grout stop plug 8 (when using a piston without a sealing effect) is pushed beyond the injection port 13, the gate valve is opened to reduce pressure, thus minimizing grout contamination inside the device. During pressure reduction, the grout in the injection port 13 may even fall back into the injection pipe 4, directly preventing contamination. Then, the piston 5 is pushed further to complete the grout stop. When the grout stop plug 8 is installed, the injection port 13 is kept facing downwards to prevent grout from flowing into the device.

[0030] If a simple steel pipe with the same inner diameter as the steel pipe to be grouted is used in the process, the use of a piston 5 with sealing properties can be disregarded. Under working conditions, the grout stopper 8 plays a role in stopping the grouting in section c of the device. The dimensions must meet the following requirements: the inner diameter e of the grouting pipe 4 is less than the length of the grout stopper 8 to be used, and the length of the grout stopper 8 is sufficient to prevent the grout from overflowing into the device when the grout stopper 8 is in section e.

[0031] Example 2. A process for grouting and stopping grouting in a steel perforated pipe, the process is carried out according to Example 1, the difference being that this example uses a piston 5 with a sealing effect, and the length b of the piston 5 is increased, so that the length b of the piston is greater than the inner diameter e of the grouting pipe plus the distance from the grouting port to the connection port of the steel perforated pipe. This ensures that when the grout-stopping plug 8 is installed, the piston 5 still seals the grout in the grouting port 13, completely preventing the grout from flowing into the device. The working condition is as follows. Figure 6 As shown.

[0032] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A process for grouting steel perforated pipes and then stopping the grouting, characterized in that: This process uses an auxiliary device to grout the steel pipe (12), and uses a grout stop plug (8) to stop the grouting of the steel pipe (12) through the auxiliary device; The auxiliary device includes a working pipe (1), one end of which is a steel pipe connection port (2), and the other end is a piston operating port (3); the side wall of the working pipe (1) is connected to the grouting pipe (4) and has a grout stop plug replenishment chamber (6), the grouting pipe (4) is located between the grout stop plug replenishment chamber (6) and the steel pipe connection port (2); the working pipe (1) has a piston (5) at the piston operating port (3), the piston (5) is connected to a positionable piston rod (7) extending out of the piston operating port (3); the end of the grouting pipe (4) connected to the working pipe (1) is the grouting port (13), and the other end is the grout inlet (9); the length a of the grout stop plug replenishment chamber (6) is ≥ the length of the grout stop plug (8) to be used; the length b of the piston (5) is > the length a of the grout stop plug replenishment chamber (6); the grout stop plug replenishment chamber (6) and the grouting port (13) are connected. The distance c is greater than the length of the stop plug (8) to be used plus the minimum length of the piston (5) to prevent grout leakage; the length b of the piston (5) is greater than the inner diameter e of the grouting pipe (4); the inner diameter d of the working pipe (1) is greater than the inner diameter of the steel flower pipe (12); the inner diameter e of the grouting pipe (4) is less than the length of the stop plug (8) to be used; the length b of the piston (5) is greater than the inner diameter e of the grouting pipe (4) plus the distance from the grouting port (13) to the steel flower pipe connection port (2); The process includes the following steps: S1: The piston (5) is retracted outside the grout stop plug replenishment chamber (6) by the positionable piston rod (7), and the grout stop plug (8) is replenished from the grout stop plug replenishment chamber (6); S2: The piston (5) is pushed by the positionable piston rod (7) to push the grout stop plug (8) between the grout stop plug replenishment chamber (6) and the grouting pipe (4); S3: Use connecting pipe (11) to connect steel pipe connector (2) and steel pipe (12); S4: Grout is injected into the grouting pipe (4) through the grout inlet (9), and the grout enters the steel pipe (12) through the grouting port (13) and the steel pipe connection port (2) in sequence; S5: Stop grouting after the required amount of grout in the steel pipe (12) has been reached; S6: Push the piston (5) through the positionable piston rod (7) and push the grout stop plug (8) into the steel flower pipe (12) to complete the grouting and grout stop; S7: Disassemble the connecting pipe (11) and the working pipe (1) to complete the operation.

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