CN211314150U - A high-pressure drilling and sealing device - Google Patents

Abstract

The utility model relates to a high-pressure drilling sealing device, which is characterized by comprising: a pressure relief section, a sealing section and a sealing section fastening component; when in use, a drill rod is passed through the sealing section, a drill bit is installed at the end of the drill rod, and the adjustment Position the drilling rig so that the direction of the drill pipe is consistent with the direction of the buried orifice section, hide the drill bit in the pressure relief section, connect the pressure relief section and the sealing section through the first connecting bolt and the first connecting nut, and open the buried hole The ball valve on the mouth section starts drilling construction. During the drilling process, open the pressure relief ball valve in the pressure relief section for slag discharge and pressure relief. If the sealing device leaks, it can be blocked by tightening the fastening bolts and pressing the rubber sealing ring. leakage. The utility model has the advantages of simple structure, convenient use and easy popularization, and can effectively prevent a large amount of water leakage and gushing from the orifice when drilling under high pressure conditions.

Description

A high-pressure drilling and sealing device

technical field

The utility model belongs to the technical field of underground drilling and grouting, in particular to a high-pressure drilling sealing device.

Background technique

With the development of national economic construction and the development and utilization of underground space, a large number of tunnels such as electric power, subway, highway, and hydraulic engineering need to be constructed on the bottom of the river or on the seabed. During the construction process, it is inevitable to carry out advanced geological drilling, advanced drilling and grouting reinforcement, which will involve drilling construction in a complex geological environment under high water pressure. Due to the high water pressure when drilling on the bottom of the river or the seabed, water spray or gushing from the orifice will inevitably occur during the drilling process, which will bring security risks. Therefore, it is of extremely important practical significance and value to add a sealing device at the orifice during the drilling process to prevent a large amount of water leakage and gushing during the drilling process.

Utility model content

The technical problem to be solved by the present utility model is: aiming at the above-mentioned deficiencies of the prior art, to provide a simple structure, convenient use, easy promotion and low cost, which can reduce or avoid the harm to surrounding personnel and vehicles during the construction process, and prevent A device for splattering debris when the road is broken.

In order to solve the above technical problems, the utility model is realized through the following technical solutions:

A high-pressure drilling and sealing device is characterized in that it comprises: a first steel pipe, a first flange, a second flange, a second steel pipe, a pressure relief ball valve, a first connecting bolt and a first connecting nut that are used together, The third steel pipe, the third flange, the first steel plate ring, the annular rubber sealing washer, the tightening nut, the second steel plate ring, the steel strip with one hole in the middle and two holes on both sides , the fastening bolt and the second connecting bolt matched with the fastening nut;

The models of the three flanges are the same, and the inner diameter of the flange is the same as the outer diameter of the first steel pipe and the third steel pipe; a circular hole with the same diameter as the inner diameter of the second steel pipe is arranged on the side of the first steel pipe to relieve pressure. The ball valve matches the size of the second steel pipe; the inner and outer diameters of the first steel plate ring, rubber sealing gasket and the second steel plate ring are the same, and the inner diameter is slightly larger than the outer diameter of the drill pipe and drill bit of the drilling equipment, and the outer diameter is the same as that of the third steel pipe. The inner diameter of the steel plate is the same, the sum of the thickness of the first steel plate ring and the length of the rubber sealing washer is slightly smaller than the length of the third steel pipe; the size of the opening in the middle of the steel strip is larger than the inner diameter of the rubber sealing washer, and the inner diameter of the circular holes on both sides is the same as that of the tight The inner diameter of the fixing nut is the same, and the center spacing of the two circular holes is the same as the center spacing of the two tightening nuts welded on the third steel pipe; the length of the tightening bolt is greater than the sum of the thickness of the second steel plate ring and the thickness of the steel strip;

The first flange plate and the second flange plate are respectively welded on both ends of the first steel pipe, one end of the second steel pipe is welded around the round hole on the first steel pipe, and the outer surface of the other end is threaded to form a thread and is connected with the pressure relief. Ball valve connection to form a pressure relief section;

The third flange and the first steel plate ring are respectively welded on the inner and outer sides of the same end of the third steel pipe, the fastening nut is welded on the outer side of the other end of the third steel pipe, and the rubber sealing washer is inserted into the interior of the third steel pipe to form a sealing section;

The circular hole in the middle of the second steel plate ring and the opening in the middle of the steel strip are aligned and contacted to form a sealing section fastening assembly;

The pressure relief section and the sealing section are connected by the first connecting bolt and the first connecting nut to the second flange and the third flange to complete the assembly; the sealing section and the sealing section fastening component are connected by the fastening bolt and the fastening nut To complete the assembly, after assembly, one end of the rubber sealing gasket and the second steel plate ring is clamped into the third steel pipe, and the other end of the second steel plate ring is in direct contact with the steel strip.

As a preferred solution, in the above-mentioned high-pressure drilling and sealing device, the connection mode of the first flange plate and the second flange plate and the two ends of the first steel pipe, and the connection mode of the third flange plate and the third steel pipe For threaded connection.

Compared with the prior art, the beneficial effects of the present utility model are:

1. The utility model is mainly composed of a pressure relief section, a sealing section and a sealing section fastening component. During use, by opening the ball valve on the pressure relief section, the slag discharge and pressure relief in the drilling process can be easily realized, In order to prevent leakage of the sealing device, the leakage can be blocked by tightening the fastening bolts and pressing the rubber sealing ring. pressure.

2. The utility model is only composed of a pressure relief section, a sealing section, a sealing section fastening component and simple bolts and nuts, the structure is simple and very simple, the disassembly, installation and use are very convenient, and the relevant materials and components are cheap and easy to use. Obtained, so it is very easy to promote and use.

Description of drawings

The following is a brief description of the content expressed in the drawings of this specification and the symbols in the drawings:

Fig. 1 is a sectional view of a high pressure drilling sealing device.

Figure 2 is a schematic diagram of the installation and use state of the high-pressure drilling and sealing device.

Figure 3 is a schematic diagram of the composition of the high-pressure drilling and sealing device.

Figure 4 is a front view of the pressure relief section of the high pressure drilling sealing device.

Figure 5 is the left side view of the pressure relief section of the high pressure drilling sealing device.

Figure 6 is a front view of the sealing section of the high pressure drilling sealing device.

Figure 7 is a left side view of the sealing section of the high pressure drilling sealing device.

Figure 8 is a right side view of the sealing section of the high pressure drilling sealing device.

FIG. 9 is a front view of the sealing section fastening assembly of the high pressure drilling sealing device.

Figure 10 is a left side view of the sealing section fastening assembly of the high pressure drilling sealing device.

Figure 11 is a right side view of the sealing section fastening assembly of the high pressure drilling sealing device.

In the figure, 1-first steel pipe, 2-first flange, 3-second flange, 4-second steel pipe, 5-pressure relief ball valve, 6-first connecting bolt, 7-first connecting nut , 8—third steel pipe, 9—third flange, 10—first steel plate ring, 11—rubber sealing washer, 12—fastening nut, 13—second steel plate ring, 14—steel strip, 15— Fastening bolts, 16—second connecting bolts.

Detailed ways

Below with reference to the accompanying drawings, the present utility model will be further described in detail through the embodiments, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solutions of the present utility model.

Example 1

As shown in Figure 1, a high-pressure drilling sealing device is characterized in that it includes a first steel pipe 1, a first flange 2, a second flange 3, a second steel pipe 4, a pressure relief ball valve 5, and a supporting The first connecting bolt 6 and the first connecting nut 7, the third steel pipe 8, the third flange 9, the first steel plate ring 10, the annular rubber sealing washer 11, the tightening nut 12, the second steel plate ring 13, The middle and both sides are respectively provided with a steel strip 14 with an opening and two threaded holes, a fastening bolt 15 and a second connecting bolt 16 matched with the fastening nut 12;

The first steel pipe 1 and the third steel pipe 8 are all DN100 steel pipes; the three flanges 2, 3 and 9 are all DN100 flanges, and the thicknesses are 18mm, 12mm and 12mm in sequence; A circular hole with a diameter of 50mm, the second steel pipe 4 and the pressure relief ball valve 5 are respectively DN50mm steel pipe and DN50mm ball valve; the inner diameter of the first steel plate ring 10, the rubber sealing gasket 11 and the second steel plate ring 13 are all 46mm, and the outer diameter is 46mm. Both are consistent with the inner diameter of the DN100 steel pipe, the outer diameter of the drill pipe and drill bit of the drilling equipment is slightly less than 46mm; the thickness of the first steel plate ring 10 is 5mm, the length of the rubber sealing gasket 11 is 120mm, and the length of the third steel pipe 8 is 135mm; the length, width and thickness of the steel strip 14 are 190mm, 50mm and 10mm respectively, the opening in the middle is a rectangle of 70×50mm, the inner diameter of the round holes on both sides is the same as the inner diameter of the fastening nut 12, and the two threaded The center spacing of the holes is consistent with the center spacing of the two fastening nuts 12 welded on the third steel pipe 8, the thickness of the second steel plate ring 13 is 37mm; the first connecting bolt 6 is an M16 bolt with a length of not less than 40mm, A connecting nut 7 is an M16 nut; the tightening nut 12 is an M16 nut, and the tightening bolt 15 is an M16 bolt with a length of 80mm;

The first flange 2 and the second flange 3 are respectively welded on both ends of the first steel pipe 1, one end of the second steel pipe 4 is welded around the round hole on the first steel pipe 1, and the outer surface of the other end is formed by threading. threaded and connected with the pressure relief ball valve 5 to form the pressure relief section shown in Figures 4 to 5;

The third flange 9 and the first steel plate ring 10 are respectively welded on the inner and outer sides of the same end of the third steel pipe 8 , the tightening nut 12 is welded on the outer side of the other end of the third steel pipe 8 , and the rubber sealing washer 11 is inserted into the third steel pipe 8 . Inside, the sealing section shown in Figures 6 to 8 is formed;

The circular hole in the middle of the second steel plate ring 13 and the opening in the middle of the steel strip 14 are aligned to form the sealing section fastening assembly shown in FIGS. 9 to 11 ;

The pressure relief section and the sealing section are assembled by connecting the second flange 3 and the third flange 9 through the first connecting bolt 6 and the first connecting nut 7; Connect with the fastening nut 12 to complete the assembly. After assembly, one end of the rubber sealing washer 11 and the second steel plate ring 13 is clamped into the third steel pipe 8, and the other end of the second steel plate ring 13 is in direct contact with the steel strip 14. Assembly The schematic diagram of the structure of the high-pressure drilling and sealing device is shown in FIG. 3 .

The working principle of the utility model is:

The first step: connect the buried orifice section and the pressure relief section through the second connecting bolt 16;

Step 2: Insert the second steel plate ring 13 into the inside of the third steel pipe 8 of the sealing section and on the right side of the rubber sealing gasket 11, and then align the opening in the middle of the steel strip 14 with the circular hole in the middle of the rubber sealing gasket 11 and Press the second steel plate ring 13, then insert the fastening bolt 15 into the threaded hole of the steel strip 14 and screw it into the fastening nut on the sealing section, and the sealing section is assembled;

Step 3: Pass the drill pipe through the sealing section and install the drill bit at the end of the drill pipe;

Step 4: Adjust the position of the drilling rig so that the direction of the drill pipe is consistent with the direction of the buried orifice section, and hide the drill bit in the pressure relief section;

Step 5: Connect the pressure relief section and the sealing section through the first connecting bolt 6 and the first connecting nut 7, as shown in Figure 1;

Step 6: Open the ball valve on the buried orifice section and start drilling construction;

Step 7: During the drilling process, open the pressure relief ball valve 5 of the pressure relief section for slag discharge and pressure relief;

Step 8: If the sealing device leaks during the drilling process, the leakage can be blocked by tightening the fastening bolts 15 and pressing the rubber sealing ring 11.

Example 2

Repeat Example 1, but with the following differences, a high-pressure drilling sealing device, the connection method of the first flange 2 and the second flange 3 and the two ends of the first steel pipe 1, and the third flange 9 The connection with the third steel pipe 8 is threaded.

The above-mentioned embodiments are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications and equivalent replacements made within the principles and design principles of the present utility model shall be included in the present utility model. within the scope of the new claims.

Claims (2)

1. A high-pressure drilling sealing device, characterized by comprising: a first steel pipe (1), a first flange (2), a second flange (3), a second steel pipe (4), a pressure relief ball valve (5), the first connecting bolt (6) and the first connecting nut (7), the third steel pipe (8), the third flange (9), the first steel plate ring (10), the annular A rubber sealing washer (11), a tightening nut (12), a second steel plate ring (13), a steel strip 14 with an opening in the middle and two round holes on both sides, and a tightening nut (12) Matching fastening bolts (15) and second connecting bolts (16); The models of the three flanges (2, 3, 9) are the same, and the inner diameter of the flanges (2, 3, 9) is the same as the outer diameter of the first steel pipe (1) and the third steel pipe (8). The side surface of the steel pipe (1) is provided with a circular hole whose diameter is the same as the inner diameter of the second steel pipe (4). The pressure relief ball valve (5) matches the size of the second steel pipe (4). The first steel plate ring (10), The inner and outer diameters of the rubber sealing gasket (11) and the second steel plate ring (13) are the same, the inner diameter is slightly larger than the outer diameter of the drill pipe and the drill bit of the drilling equipment, and the outer diameter is consistent with the inner diameter of the third steel pipe (8). The sum of the thickness of the steel plate ring (10) and the length of the rubber sealing washer (11) is slightly smaller than the length of the third steel pipe (8); the size of the opening in the middle of the steel strip (14) is larger than the inner diameter of the rubber sealing washer (11), The inner diameter of the circular holes on both sides is the same as the inner diameter of the fastening nut (12), and the center spacing of the two circular holes is the same as the center spacing of the two fastening nuts (12) welded on the third steel pipe (8); the fastening bolts The length of (15) is greater than the sum of the thickness of the second steel plate ring (13) and the thickness of the steel strip (14); The first flange (2) and the second flange (3) are respectively welded to both ends of the first steel pipe (1), and one end of the second steel pipe (4) is welded to the circular hole on the first steel pipe (1). Around, the outer surface of the other end is threaded and connected with the pressure relief ball valve (5) to form a pressure relief section; The third flange (9) and the first steel plate ring (10) are welded to the inner and outer sides of the same end of the third steel pipe (8), respectively, and the fastening nut (12) is welded to the outer side of the other end of the third steel pipe (8). The rubber sealing gasket (11) is inserted into the interior of the third steel pipe (8) to form a sealing section; The circular hole in the middle of the second steel plate ring (13) and the opening in the middle of the steel strip (14) are aligned and contacted to form a sealing section fastening assembly; The pressure relief section and the sealing section are connected by the first connecting bolt (6) and the first connecting nut (7) to the second flange (3) and the third flange (9) to complete the assembly; the sealing section and the sealing section The fastening components are connected by fastening bolts (15) and fastening nuts (12) to complete the assembly. After assembly, the rubber sealing washer (11) and one end of the second steel plate ring (13) are clamped into the third steel pipe (8). , the other end of the second steel plate ring (13) is in direct contact with the steel strip (14). 2. A high-pressure drilling sealing device according to claim 1, characterized in that: the connection between the first flange (2) and the second flange (3) and the two ends of the first steel pipe (1) and the connection method of the third flange (9) and the third steel pipe (8) is threaded connection.

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