Freezing pipe with telescopic bottom

Abstract

The utility model relates to the technical field of freezing construction, in particular to a freezing pipe with a telescopic bottom. Comprising a main pipeline, a telescopic pipe and a traction assembly, the main pipeline is used for bearing low-temperature saline water for freezing construction; the end, opposite to the horsehead, of the main pipeline is sleeved with the telescopic pipe, and the telescopic pipe extends out of the end of the main pipeline under extrusion of low-temperature saline water in the freezing construction process and stops till the horsehead. The traction assembly penetrates into the main pipeline along the liquid inlet end of the main pipeline, is connected with the telescopic pipe and is used for pulling the telescopic pipe completing freezing construction at the horsehead into the main pipeline. The freezing pipe is simple in structure, easy to use and capable of avoiding the horsehead position after freezing construction is finished in a telescopic mode, the influence of follow-up construction on the freezing pipe is avoided, and the using stability of the freezing pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of freezing construction, in particular to a bottom telescopic freezing pipe. Background Art

[0002] After the freezing construction is completed, it is necessary to treat the freezing pipes. Generally, cement slurry with a water-cement ratio of 1:1 or cement-clay mixed slurry is used to fill the inside and outside of all the freezing pipes to prevent cross-flow between aquifers through the freezing pipes, thereby effectively preventing sand and water gushing in the shaft.

[0003] Currently, during the construction of breaking through the horsehead gate, it is easy to damage the filled freezing pipes, affecting the filling effect inside and outside the freezing pipes, and there is a risk of cross-flow between aquifers through the freezing pipes. Therefore, it is urgent to solve.

[0004] The above content is only used to assist in understanding the technical solution of the utility model, and does not represent an admission that the above content is the closest prior art. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a bottom telescopic freezing pipe, which has a simple structure and is easy to use. It can avoid the horsehead gate after the freezing construction by telescoping, prevent subsequent construction from affecting the freezing pipes, and improve the stability of the use of the freezing pipes.

[0006] To achieve the above object, the technical solution of the utility model is realized as follows. A bottom telescopic freezing pipe includes: a main pipe, a telescopic pipe, and a traction assembly; the main pipe is used to carry low-temperature brine for freezing construction; the telescopic pipe is sleeved at the opposite end of the main pipe and the horsehead gate, and extends along the end of the main pipe under the extrusion of the low-temperature brine during the freezing construction until it stops at the horsehead gate; the traction assembly penetrates into the liquid inlet end of the main pipe and is connected to the telescopic pipe, and is used to pull the telescopic pipe that has completed the freezing construction at the horsehead gate into the main pipe.

[0007] Preferably, the traction assembly includes a traction wire and a rubber plug; the rubber plug is arranged in the telescopic pipe and is located at the docking end of the telescopic pipe and the horsehead gate; one end of the traction wire is connected to the rubber plug, and the other end passes through the liquid inlet of the main pipe and is connected to a wire traction machine.

[0008] Preferably, it further includes a seal for sealing the gap between the main pipe and the telescopic pipe; the seal includes a rubber sealing ring and a converging opening both arranged at the opposite end of the main pipe and the horsehead gate; the outer side of the rubber sealing ring is snap-fitted with an annular groove on the inner wall of the main pipe, and the inner side of the rubber sealing ring is in contact connection with the outer wall of the telescopic pipe; the converging opening is arranged in an inverted trumpet shape, with the top connected to the end of the main pipe and the bottom sleeved on the outer wall of the telescopic pipe.

[0009] Preferably, a reinforcing circular steel plate is provided at the connection between the rubber plug and the traction steel wire.

[0010] Preferably, the reinforced circular steel plate and the rubber plug are both in sliding connection with the inner wall of the telescopic tube.

[0011] Preferably, an annular limit ring is provided at the end of the telescopic tube; the annular limit ring forms a sliding connection with the inner wall of the main pipe, and the outer diameter of the annular limit ring is the same as the inner diameter of the main pipe; the inner diameter of the annular limit ring is smaller than the diameter of the telescopic tube and larger than the diameter of the rubber stopper.

[0012] Preferably, the bottom of the annular limiting ring is in contact with the top of the rubber sealing ring.

[0013] Preferably, the power of the wire traction machine is adjustable.

[0014] Preferably, it also includes a limit clamp; the limit clamp is installed on the telescopic tube and forms a clamping connection with the retracted opening to prevent the telescopic tube from being completely retracted into the main pipeline.

[0015] The beneficial effects of the utility model are embodied in:

[0016] (1) During the freezing construction, the freezing pipe provided by the utility model can automatically stretch out under the impact of salt water and extend to the top of the horse head gate. When the freezing construction is completed and the salt water is extracted, it can be recovered by pulling the steel wire to avoid the area where the horse head gate is located. This ensures that the freezing pipe will not be damaged during subsequent construction, thereby improving the safety of construction.

[0017] (2) The telescopic tube of the freezing pipe provided by the utility model is provided with a rubber plug inside. When the freezing pipe is filled with mud, the rubber plug can form a seal in the freezing pipe to separate the cement slurry and the horse head door. The rubber plug has a certain elasticity and can resist the local impact and vibration of the horse head door construction on the freezing pipe, thereby reducing the impact of the horse head door construction on the freezing pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model in a contracted state;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model in the extended state;

[0020] Figure 3 It is a top view of the telescopic tube of the utility model;

[0021] Figure 4 It is a bottom view of the main pipeline of the utility model.

[0022] Description of reference numerals:

[0023] 10. Main pipeline; 11. Rubber sealing ring; 12. Collapsed opening; 20. Telescopic pipe; 21. Rubber plug; 22. Reinforced circular steel plate; 23. Annular limiting ring; 30. Traction wire. Detailed implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0025] Embodiment

[0026] See Figures 1-4 as shown in

[0027] The present invention provides a bottom telescopic freezing pipe, including: a main pipeline 10, a telescopic pipe 20 and a traction assembly.

[0028] The main pipeline 10 is used to carry low-temperature brine for freezing construction during actual use. The telescopic pipe 20 is sleeved at the opposite end of the main pipeline 10 and the horseshoe heading, and extends out along the end of the main pipeline 10 under the extrusion of the low-temperature brine during the freezing construction until it stops at the horseshoe heading. The traction assembly penetrates through the liquid inlet end of the main pipeline 10 and is connected to the telescopic pipe 20, and is used to pull the telescopic pipe 20 that has completed the freezing construction at the horseshoe heading into the main pipeline 10.

[0029] This method of automatically extending by using the pressure during the injection of low-temperature brine and then using external force to pull and recover after the freezing construction enables the entire freezing pipe to achieve the function of automatic telescoping, thereby realizing the freezing of the soil layer at the horseshoe heading and then recovering and avoiding it, preventing the construction at the horseshoe heading from affecting the overall freezing pipe and improving the safety of the entire construction.

[0030] The traction assembly is mainly composed of a traction wire 30 and a rubber plug 21. The rubber plug 21 is arranged in the telescopic pipe 20 and is located at the docking end of the telescopic pipe 20 and the horseshoe heading; one end of the traction wire 30 is connected to the rubber plug 21, and a reinforced circular steel plate 22 is provided at the connection between the rubber plug 21 and the traction wire 30. Both the reinforced circular steel plate 22 and the rubber plug 21 form a sliding connection with the inner wall of the telescopic pipe 20. An annular limiting ring 23 is provided at the end of the telescopic pipe 20; the annular limiting ring 23 forms a sliding connection with the inner wall of the main pipeline 10, and the outer diameter of the annular limiting ring 23 is the same as the inner diameter of the main pipeline 10; the inner diameter of the annular limiting ring 23 is smaller than the diameter of the telescopic pipe 20 and larger than the diameter of the rubber plug 21.

[0031] The bottom surface of the reinforced circular steel plate 22 is fixedly connected to the rubber plug 21 , and the top of the reinforced circular steel plate 22 is fixedly connected to the traction wire 30 , so that the reinforced circular steel plate 22 can bear more pulling force applied by the traction wire 30 and improve the stability of the recovery of the telescopic tube 20 .

[0032] The other end of the traction wire 30 passes through the liquid inlet of the main pipeline 10 and is connected to the wire traction machine. The power of the wire traction machine is adjustable.

[0033] In actual use, the operator adjusts the power of the wire traction machine according to the length of the main pipeline 10 to ensure that the traction wire 30 can slowly pull the reinforced circular steel plate 22 in the telescopic tube 20, thereby driving the telescopic tube 20 to slowly retract into the main pipeline 10 as a whole, completing the contraction action of the end of the freezing pipe, so that after the freezing construction of the freezing pipe is completed, the local pipe section can avoid the horse head gate area. After the telescopic tube 20 is completely recovered, cement slurry is filled in the freezing pipe. At this time, the traction wire 30 is no longer lowered to ensure that the telescopic tube 20 will not be pushed by the pressure of the injected cement slurry.

[0034] In order to ensure that the function of the freezing pipe itself is not affected during the freezing construction process, a sealing member is provided for sealing the gap between the main pipeline 10 and the telescopic pipe 20 .

[0035] The sealing member includes a rubber sealing ring 11 and a closing port 12, both of which are arranged on the main pipe 10 at the end opposite to the horse head gate. An annular groove is arranged on the inner wall of the main pipe 10, the outer side of the rubber sealing ring 11 is connected with the annular groove in a snap-fitting manner, the inner side of the rubber sealing ring 11 is connected with the outer wall of the telescopic tube 20 in contact, and the bottom of the annular limiting ring 23 is connected with the top of the rubber sealing ring 11 in contact, so that the gap between the main pipe 10 and the telescopic tube 20 can be sealed.

[0036] The closing opening 12 is set in an inverted trumpet shape, the top is connected to the end of the main pipe 10, and the bottom is sleeved on the outer wall of the telescopic pipe 20. This arrangement allows the main pipe 10 to guide the telescopic pipe 20 when it is extended and retracted, so that the telescopic pipe 20 is not easy to shake during the process of extension and retraction, making the performance of the entire freezing pipe more stable when the end is extended and retracted.

[0037] It also includes a limit clamp, which is installed on the telescopic tube 20 and forms a clamping connection with the retracted opening 12 to prevent the telescopic tube 20 from being completely recovered into the main pipeline 10.

[0038] When specifically applied, the limit card member can be set as a horizontal rod, which is in fitting connection with the telescopic pipe 20. The length of the horizontal rod is greater than the diameter of the telescopic pipe 20 and also greater than the diameter of the closing opening 12, and is the same as the diameter of the main pipe 10. Thus, when the traction wire 30 pulls the telescopic pipe 20 into the main pipe 10, the telescopic pipe 20 will not completely enter under the restriction of the horizontal rod. This avoids pulling the telescopic pipe 20 too much into the main pipe 10 during the recovery operation, resulting in excessive recovery of the telescopic pipe 20 and affecting the subsequent cement slurry filling effect of the main pipe 10.

[0039] It should be noted that if there are directional indications such as up, down, left, right, front, back... in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the drawings. If the specific posture changes, the directional indications will also change accordingly. In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, "a plurality" means more than two. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist.

[0040] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A bottom telescopic freezing pipe, characterized in that: include: A main pipeline (10), a telescopic pipe (20) and a traction assembly; the main pipeline (10) is used to carry low-temperature brine for freezing construction; the telescopic pipe (20) is sleeved on the opposite end of the main pipeline (10) and the horse head gate, and during the freezing construction process, it is squeezed by the low-temperature brine and extends along the end of the main pipeline (10) until it stops at the horse head gate; the traction assembly penetrates along the liquid inlet end of the main pipeline (10) and is connected to the telescopic pipe (20), and is used to pull the telescopic pipe (20) that has completed the freezing construction at the horse head gate into the main pipeline (10).

2. A bottom-retractable freezing pipe according to claim 1, characterized in that: The traction assembly comprises a traction steel wire (30) and a rubber plug (21); the rubber plug (21) is arranged in the telescopic tube (20) and is located at the butt end between the telescopic tube (20) and the horse head gate; one end of the traction steel wire (30) is connected to the rubber plug (21), and the other end is connected to the steel wire traction machine after passing through the liquid inlet of the main pipeline (10).

3. A bottom telescopic freezing pipe according to claim 2, characterized in that: It also includes a sealing member for sealing the gap between the main pipe (10) and the telescopic pipe (20); the sealing member includes a rubber sealing ring (11) and a closing mouth (12) both arranged at the ends of the main pipe (10) and the horse head gate opposite each other; the outer side of the rubber sealing ring (11) forms a snap-fit ​​connection with the annular groove on the inner wall of the main pipe (10), and the inner side of the rubber sealing ring (11) forms a contact connection with the outer wall of the telescopic pipe (20); the closing mouth (12) is arranged in an inverted trumpet shape, the top of which is connected to the end of the main pipe (10), and the bottom of which is sleeved on the outer wall of the telescopic pipe (20).

4. A bottom-retractable freezing pipe according to claim 3, characterized in that: A reinforcing circular steel plate (22) is provided at the connection between the rubber plug (21) and the traction steel wire (30).

5. A bottom-retractable freezing pipe according to claim 4, characterized in that: The reinforcing circular steel plate (22) and the rubber plug (21) are both slidably connected to the inner wall of the telescopic tube (20).

6. A bottom telescopic freezing pipe according to claim 5, characterized in that: An annular limiting ring (23) is provided at the end of the telescopic tube (20); the annular limiting ring (23) is slidably connected to the inner wall of the main pipe (10); the outer diameter of the annular limiting ring (23) is the same as the inner diameter of the main pipe (10); the inner diameter of the annular limiting ring (23) is smaller than the diameter of the telescopic tube (20) and larger than the diameter of the rubber stopper (21).

7. A bottom telescopic freezing pipe according to claim 6, characterized in that: The bottom of the annular limiting ring (23) is in contact with the top of the rubber sealing ring (11).

8. The bottom telescopic freezing pipe according to claim 6, characterized in that: The power of the steel wire traction machine is adjustable.

9. The bottom telescopic freezing pipe according to claim 6, characterized in that: It also includes a position-limiting clamping piece, which is installed on the telescopic tube (20) and forms a clamping connection with the retracting opening (12) to prevent the telescopic tube (20) from being completely retracted into the main pipeline (10).

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