CN212454299U

CN212454299U - Plastic uranium mining sleeve sealing and leakage-proof connecting device

Info

Publication number: CN212454299U
Application number: CN202021127316.4U
Authority: CN
Inventors: 欧朝晖; 龙南国; 杨俊�; 赵肖芒; 徐腾
Original assignee: Hunan Zhonghe Exploration Co ltd
Current assignee: Hunan Zhonghe Exploration Co ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2021-02-02
Anticipated expiration: 2030-06-17

Abstract

The utility model provides a sealed leak protection connecting device of plastics uranium mining sleeve pipe, includes the ferrule, the processing of ferrule inner wall has the screw thread, and department reserves a "step" in the centre, two terminal surfaces of "step" are parallel to each other, and are perpendicular with the axis of ferrule. The utility model discloses changed the setting of the unable perpendicular to axis end face contact of former ferrule, utilized its processing simple and convenient, and did not use any other materials and devices such as 704 glue or rubber seal, under the prerequisite of not increasing cost, just can reach fine sealed effect.

Description

Plastic uranium mining sleeve sealing and leakage-proof connecting device

Technical Field

The utility model relates to a plastic sleeve seals leak protection connecting device in ground leaching mining technology drilling, hydrogeology hole.

Background

In recent years, sandstone-type uranium ores in China develop rapidly, and the main mining method is in-situ leaching uranium mining, which is referred to as in-situ leaching uranium mining for short. According to the method, under the condition of natural occurrence of an ore deposit, a prepared chemical reagent is injected into the ore deposit through a liquid injection hole drilled from the ground surface to the ore deposit, the chemical reagent and the ore deposit are subjected to chemical reaction to dissolve uranium in ores, and then a uranium-containing solution is pumped to the ground surface through a liquid pumping hole for treatment, so that a uranium product is finally obtained.

To inject the chemical reagent into the seam and then draw the solution out, it is passed through a drilled passage called an earth-leaching process bore. In the construction of a ground immersion process borehole, there is a process of installing a casing, i.e., a plastic casing of a particular process is installed in the drilled borehole. Due to the particularity of uranium mining, the requirement on environmental protection is high, and the integral sealing property of the plastic casing is required to be good. The drilling depths of different ore deposit designs are different, the depths are generally 200-600 meters, and the length of each plastic casing pipe in the prior art is generally 8 meters, so that the plastic casing pipes need to be connected to meet the requirements of the designed hole depths. The existing technology is mechanical connection, and a pipe hoop made of the same material is used between two plastic sleeves to achieve the purpose of connection.

In the drill hole of the ground leaching process, the pipe hoop plays a role of connecting a plastic casing pipe and simultaneously meets the sealing and leakage-proof requirements necessary for the ground leaching uranium mining process.

The existing connection method is as follows: utilize the great plastic tubing of the same type pipe diameter to process into the ferrule and connect, promptly with the lathe at ferrule inner wall processing internal thread, process supporting external screw thread in the production sleeve pipe both ends outside, couple together two bushing with the ferrule to mainly adopt the winding to produce the sticky tape, scribble 704 and glue or add and establish the sealing washer and reach sealed leak protection effect in the ferrule.

In the conventional device, when two sleeves are connected, a pipe twisting tool is used to connect the pipe hoop and the sleeves. When a pipe screwing tool is operated, the pipe screwing tool is not screwed and is not installed in place sometimes; sometimes, the installation is screwed too much, so that the production casing is damaged or the sealing ring is deformed and damaged. The connection easily causes the sealing performance of the sleeve connection position to be not guaranteed, and the prior production experience shows that the phenomenon that the sealing effect of the device is poor is common, a plurality of leakage points easily occur, the later maintenance is difficult, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that, to prior art not enough, provide an operation of being convenient for, the reliable operation, sealed effectual, the sealed leak protection connecting device of uranium mining sleeve pipe of plastics with low costs.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a sealed leak protection connecting device of plastics uranium mining sleeve pipe, includes the ferrule, the processing of ferrule inner wall has the screw thread, and department reserves a "step" in the centre, two terminal surfaces of "step" are parallel to each other, and are perpendicular with the axis of ferrule.

Further, the step is annular.

Further, the cross section of the step is rectangular.

Further, the length of the step is 25 to 35 mm, and the width is 4.5 to 5.5 mm, preferably 5.0 mm. Wherein, the length of the step refers to the length along the axial direction of the pipe clamp.

The pipe hoop is a plastic pipe made of the same material, the outer diameter of the pipe hoop is larger than that of the production casing pipe, the pipe hoop is automatically processed on a construction site, and the length of the pipe hoop is designed according to the requirement.

The outer sides of two ends of a production plastic sleeve to be connected are respectively processed with corresponding external threads, and two end faces of the sleeve are vertical to the axis of the sleeve. When the installation sleeve pipe, earlier with the plastic casing for the lower part raw adhesive tape winding external screw thread part, twist the top tube hoop to with the interior terminal surface contact of "step" of tube hoop, transfer this plastic casing to drilling again, install upper portion sleeve pipe again to well head suitable position, twist in the tube hoop after the good raw adhesive tape of upper portion sleeve pipe external screw thread winding with the same reason, do not afterburning to "step" terminal surface contact, the reuse afterburning pipe tool of afterburning of ration is evenly screwed up, avoid upper and lower plastic casing installation inequality, not in place or the phenomenon of upper and lower plastic casing overtwisting, make it become an organic whole. The end faces of the upper plastic sleeve and the lower plastic sleeve are in close contact with two end faces of a reserved step in the pipe hoop, so that effective end face contact mechanical sealing and water proofing can be realized.

The technical principle of the utility model is as follows:

the two end faces of the step in the pipe hoop are parallel to each other and are vertical to the axis of the pipe hoop, after the pipe hoop and the sleeve are screwed, the axial stress of the step can be balanced, no component force in the horizontal direction exists, and the pipe hoop is not easy to damage; the pipe is made of plastic materials, can be slightly deformed, and can enable the two contact end faces to be tightly attached to each other, so that the purpose of sealing is achieved. The designed step end face is easy to process, more convenient to operate and capable of guaranteeing quality relative to contact faces in other forms.

The utility model discloses on original connection pipe hoop's basis, locate to reserve two terminal surfaces in the centre and be parallel to each other and with the axis vertically "step" of pipe hoop, through twisting the pipe operation, utilize the characteristic that plastics material sleeve pipe suitable amount warp, closely contact with two sets of pipe end faces respectively at two terminal surfaces of this "step", twist solid power though great but axial symmetry balance, can prevent to crowd bad or spalling plastics pipe hoop.

The utility model discloses changed the setting of the unable perpendicular to axis end face contact of former ferrule, utilized its processing simple and convenient, and did not increase any other materials and devices such as 704 glue or rubber seal, under the prerequisite of not increasing the cost, just can reach fine sealed effect.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of the present invention;

FIG. 2 is a top view of the embodiment shown in FIG. 1;

FIG. 3 is a schematic structural view of a plastic sleeve for use with the embodiment of FIG. 1;

FIG. 4 is a schematic diagram of an application condition of the embodiment shown in FIG. 1.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Examples

Referring to fig. 1 and 2, the plastic uranium mining sleeve sealing and leakage-proof connecting device comprises a pipe hoop 1, wherein threads 1-1 are machined on the inner wall of the pipe hoop 1, a step 1-2 is reserved in the middle of the pipe hoop, and two end faces of the step 1-2 are parallel to each other and are perpendicular to the axis of the pipe hoop.

In this embodiment, the "step" 1-2 is annular. The cross section of the step 1-2 is rectangular.

In this embodiment, the diameter of the pipe clamp 1 is 166mm, the wall thickness is 19mm, the length of the pipe clamp 1 is 190mm, screw threads of 80mm are processed at two ends, a step of 30mm in length and 5mm in width is reserved in the middle, and two end faces are formed. The diameter of the produced plastic casing 2 used with the plastic casing is 148mm, and the wall thickness is 10mm, as shown in figure 3.

When the casing is installed, threads with the length of 80mm are also processed at two ends of a plastic casing with the diameter of 148mm, the pipe hoop 1 and one end of the production plastic casing 2 are wound with a water stop belt, the water stop belt is installed in place, then the pipe hoop is placed in a drill hole, one end, not provided with the pipe hoop, of the production plastic casing 2 at the upper part is installed (the pipe hoop is also installed at the other end of the production plastic casing), the final schematic diagram is shown in fig. 4, and the steps are repeated until the production plastic casing 2 is completely installed.

Claims

1. The utility model provides a sealed leak protection connecting device of plastics uranium mining sleeve pipe, includes the ferrule, the processing of ferrule inner wall has screw thread, its characterized in that: a step is reserved in the middle, and two end faces of the step are parallel to each other and perpendicular to the axis of the pipe clamp.

2. The plastic uranium mining sleeve sealing and leakage-proof connecting device according to claim 1, wherein: the step is annular.

3. The plastic uranium mining sleeve sealing and leakage-proof connecting device according to claim 1 or 2, wherein: the cross section of the step is rectangular.

4. The plastic uranium mining sleeve sealing and leakage-proof connecting device according to claim 1 or 2, wherein: the length of the step is 25-35 mm, and the width of the step is 4.5-5.5 mm.

5. The plastic uranium mining sleeve sealing and leakage-proof connecting device according to claim 4, wherein: the width of the step is 5.0 mm.