CN215369773U - A freezing tube orifice sealing device - Google Patents
A freezing tube orifice sealing device Download PDFInfo
- Publication number
- CN215369773U CN215369773U CN202023162254.3U CN202023162254U CN215369773U CN 215369773 U CN215369773 U CN 215369773U CN 202023162254 U CN202023162254 U CN 202023162254U CN 215369773 U CN215369773 U CN 215369773U
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- Prior art keywords
- orifice
- tube
- sealing
- ring plate
- pipe
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- 238000007789 sealing Methods 0.000 title claims abstract description 51
- 238000007710 freezing Methods 0.000 title claims abstract description 28
- 230000008014 freezing Effects 0.000 title claims abstract description 28
- 238000012856 packing Methods 0.000 claims abstract description 13
- 241000251468 Actinopterygii Species 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 239000004576 sand Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 12
- 239000002689 soil Substances 0.000 description 11
- 238000010276 construction Methods 0.000 description 10
- 238000005553 drilling Methods 0.000 description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
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- Earth Drilling (AREA)
Abstract
The utility model discloses a freezing pipe orifice sealing device which comprises an orifice pipe, a connecting assembly, a connecting ring plate and a sealing assembly. The connecting ring plate is used for providing stable support for the orifice pipe, the shaft seal packing is tightly pressed on the drill rod through the fastening bolt, a water gushing and sand gushing channel between the orifice pipe and the drill rod can be effectively blocked, and the connecting ring plate is easy to operate, simple in structure and flexible to use.
Description
Technical Field
The utility model relates to the technical field of horizontal freezing method construction, in particular to a freezing pipe orifice sealing device.
Background
The freezing method is a special stratum reinforcing technology, and its principle is that a hole is drilled in the stratum, and the saline water is introduced into the hole, and the artificial refrigeration technology is used to make the cooling saline water continuously circulate in the hole and transfer the cooling capacity to the surrounding water-containing stratum, so that the water in the soil body around the underground engineering is continuously frozen into ice, and the ice is used to bind the soil particles into a relatively stable integral structure, and the natural rock-soil body is changed into frozen soil, so that the strength, stability and impermeability of the soil body are greatly enhanced, and at the same time, the frozen wall is formed to surround the underground engineering, and the pressure of the upper rock-soil body is resisted, so that the underground water is isolated, and the underground engineering digging construction is carried out under the protection of the frozen wall, and the freezing method is often used for the construction at special positions in underground engineering such as subway. The essence is to use artificial refrigeration to temporarily change the properties of rock and soil to stabilize the formation.
The freezing method has self specificity, the drilling is the first operation and is also an indispensable procedure, and the quality of the formed hole is directly related to the quality of the formed wall in the later period. When the freezing hole drilling construction is carried out from the underground space to the soil body on the periphery of the structure, the drill rod penetrates through the concrete wall body under the driving of the drilling machine and drills in the rock-soil body. The concrete wall body is used as a fulcrum of the drill rod, and the stability of the concrete wall body is very important. Meanwhile, a gap between the outer wall of the drill rod and the stratum provides a passage for water burst and sand burst, if no plugging is needed, the underground structure is deformed and damaged due to overlarge stratum loss in serious conditions, further ground buildings, underground structures and pipelines are damaged, even engineering submerging disasters are caused, and the method is particularly dangerous when a freezing hole enters a pressure water-rich stratum. Therefore, the orifice sealing device is not only related to safety of the construction personnel and the underground structure and the surrounding building structure, but also related to a plurality of social problems.
The orifice pipe is fixed only by using a plurality of supporting rods in the existing freezing method drilling construction, the fixing effect on the orifice pipe is limited, the supporting rods are easy to deviate and lose efficacy in the construction, and the stable support is difficult to provide. Meanwhile, the existing sealing device has complex working procedures and is not easy to construct.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a freezing pipe orifice sealing device, which uses a connecting ring plate to provide stable support for an orifice pipe, and presses a shaft seal packing on a drill rod through a fastening bolt, so that a water gushing and sand gushing channel between the orifice pipe and the drill rod can be effectively blocked, and the freezing pipe orifice sealing device is easy to operate, simple in structure and flexible to use.
In order to achieve the purpose, the freezing pipe orifice sealing device provided by the utility model comprises an orifice pipe, a connecting assembly, a connecting ring plate and a sealing assembly, wherein the connecting ring plate is connected with the outer wall of the orifice pipe, and the sealing assembly is detachably connected with the tail part of the orifice pipe.
Preferably, the seal assembly comprises a shaft seal packing and a seal sleeve, the seal sleeve is detachably connected with the tail part of the orifice pipe, and the shaft seal packing is arranged in a gap between the seal sleeve and the drill rod.
Preferably, the outer diameter of the middle part of the orifice pipe is larger than the outer diameters of the two ends of the orifice pipe.
Preferably, the middle outer side of the orifice pipe is axially provided with a mounting hole, the sealing assembly is provided with a through hole corresponding to the mounting hole, and the orifice pipe is connected with the sealing assembly through a fastening bolt.
Further, a separation distance is arranged between the middle part of the orifice pipe and the sealing assembly.
Preferably, the connecting ring plate is conical, the small-diameter end of the connecting ring plate is welded with the orifice pipe, the large-diameter end of the connecting ring plate is provided with an annular wing, connecting holes are axially formed in the annular wing, and each connecting hole corresponds to one connecting assembly.
Preferably, the central axes of the orifice pipe, the connecting ring plate and the sealing assembly are in a same line.
Preferably, the connecting ring plate is welded with the outer wall of the orifice pipe.
Furthermore, the front part of the orifice pipe is in a fish scale buckle shape.
Further, the connecting assembly is an expansion bolt.
Compared with the prior art, the utility model has the following technical effects:
1. the utility model can greatly ensure the stability of the drill rod in the freezing method construction, provides effective sealing for the hole opening, prevents water and sand gushing, ensures higher precision and better quality of the freezing hole, ensures the safety of constructors, underground structures and surrounding structures, provides guarantee for the high-efficiency safety of subsequent freezing construction, and shortens the construction period;
2. the utility model has simple structure, can be manufactured on site according to conditions, and has convenient operation, lower cost and flexible use.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic perspective sectional view of a wall body and a drill rod mounted thereon according to an embodiment;
FIG. 2 is a schematic structural plan sectional view of the wall body after the wall body is connected and the drill rod is installed according to the embodiment;
FIG. 3 is an overall longitudinal sectional structure of the embodiment;
icon: : 1-rock-soil body, 2-drill bit, 3-drill rod, 4-orifice pipe, 5-wall body, 6-expansion bolt, 7-connecting ring plate, 8-fastening bolt, 9-shaft seal packing and 10-sealing sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Examples
A hole opening sealing device for a freezing pipe comprises a hole opening pipe 4, a connecting assembly 6, a connecting ring plate 7 and a sealing assembly, wherein the connecting ring plate 7 is connected with the outer wall of the hole opening pipe 4, and the sealing assembly is detachably connected with the tail portion of the hole opening pipe 4.
The sealing assembly comprises a shaft seal packing 9 and a sealing sleeve 10, the sealing sleeve 10 is detachably connected with the tail part of the orifice pipe 4, and the shaft seal packing 9 is arranged in a gap between the sealing sleeve 10 and the drill rod 3.
The outer diameter of the middle part of the orifice pipe 4 is larger than the outer diameters of two ends of the orifice pipe 4.
The mounting hole has been seted up to the middle part outside axial of orifice pipe 4, is provided with the through-hole that corresponds with the mounting hole on the seal assembly, and orifice pipe 4 passes through fastening bolt 8 with the seal assembly and is connected.
The middle of the orifice tube 4 is spaced from the seal assembly.
The connecting ring plate 7 is in a cone shape, the small-diameter end of the connecting ring plate 7 is welded with the orifice pipe 4, the large-diameter end of the connecting ring plate 7 is provided with an annular wing, connecting holes are axially arranged on the annular wing, and each connecting hole corresponds to one connecting assembly 6.
The central axes of the orifice pipe 4, the connecting ring plate 7 and the sealing component are on the same line.
The connecting ring plate 7 is welded with the outer wall of the orifice pipe 4.
The front part of the orifice pipe 4 is in a fish scale buckle shape.
The connecting assembly 6 is an expansion bolt.
With reference to fig. 1, 2 and 3, the installation and working processes of the utility model are as follows:
A. before opening the hole, the position of the hole is accurately positioned according to the measurement data;
B. a hole opener (matched with a diamond bit for coring) is used for opening holes according to a design angle, and the drilling is stopped when the depth reaches half of the wall body 5;
C. cleaning the orifice, covering cement paste on the scale of the orifice pipe 4, sleeving the connecting ring plate 7 on the orifice pipe 4, and wedging the connecting ring plate 7 and the orifice pipe 4 into the concrete wall 5;
D. welding the joint of the connecting ring plate 7 and the orifice pipe 4;
E. the support legs of the connecting ring plate 7 are fixed on the concrete wall 5 by using expansion bolts 6, so that an effective supporting function is provided for the orifice pipe 4;
F. inserting the drill rod 3, winding the shaft seal packing 9 on the drill rod 3 for a plurality of circles, and tightly pressing, wherein the winding position is the top end of the orifice pipe 4;
G. sleeving the sealing sleeve 10 on the drill rod 3, and pushing the sealing sleeve to move towards the orifice pipe 4 until the sealing sleeve 10 is clamped outside the orifice pipe 4;
H. and (3) screwing the fastening bolt 8 to tightly press the shaft seal packing 9 on the drill rod to block a water burst and sand gushing channel between the orifice pipe 4 and the drill rod 3.
I. And (3) drilling through the residual concrete wall 5 by using a coring bit arranged on the hole junction pipe 4, replacing the composite bit after coring, and normally drilling, wherein the bit 2 is driven by a drilling machine to drill towards the rock-soil body 1.
J. In the drilling process, the shaft seal packing 9 may be abraded, a small amount of water passes through the sealing assembly, at the moment, the fastening bolt 8 only needs to be screwed again, and the shaft seal packing 9 is pressed on the drill rod 3 until the water is not leaked, so that real-time control is realized. The hole inclination condition is strictly monitored in the drilling process, and the inclination is timely corrected when the theodolite is used for measuring the inclination.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023162254.3U CN215369773U (en) | 2020-12-24 | 2020-12-24 | A freezing tube orifice sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023162254.3U CN215369773U (en) | 2020-12-24 | 2020-12-24 | A freezing tube orifice sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215369773U true CN215369773U (en) | 2021-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023162254.3U Active CN215369773U (en) | 2020-12-24 | 2020-12-24 | A freezing tube orifice sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215369773U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467636A (en) * | 2022-09-06 | 2022-12-13 | 北京中煤矿山工程有限公司 | Replaceable packing type horizontal drilling two-stage orifice pressing device |
| CN115467635A (en) * | 2022-09-06 | 2022-12-13 | 北京中煤矿山工程有限公司 | Horizontal hole replaceable packing type hydraulic expansion type double-stage orifice pressing device |
-
2020
- 2020-12-24 CN CN202023162254.3U patent/CN215369773U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467636A (en) * | 2022-09-06 | 2022-12-13 | 北京中煤矿山工程有限公司 | Replaceable packing type horizontal drilling two-stage orifice pressing device |
| CN115467635A (en) * | 2022-09-06 | 2022-12-13 | 北京中煤矿山工程有限公司 | Horizontal hole replaceable packing type hydraulic expansion type double-stage orifice pressing device |
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