CN211901961U - Seamless steel pipe convenient for butt joint for high-pressure boiler - Google Patents
Seamless steel pipe convenient for butt joint for high-pressure boiler Download PDFInfo
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- CN211901961U CN211901961U CN202020336628.XU CN202020336628U CN211901961U CN 211901961 U CN211901961 U CN 211901961U CN 202020336628 U CN202020336628 U CN 202020336628U CN 211901961 U CN211901961 U CN 211901961U
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Abstract
The utility model relates to the technical field of seamless steel pipes for high-pressure boilers, in particular to a seamless steel pipe for high-pressure boilers, which is convenient to butt joint and comprises a steel pipe body, wherein a fixed flange ring is fixed at the left end of the steel pipe body, a movable flange ring is sleeved at the right end of the steel pipe body, an annular flange for blocking the movable flange ring in the axial direction is fixed on the right end of the steel pipe body, the movable flange ring is connected with the steel pipe body in a sliding way, and the movable flange ring is positioned at the left side of the annular flange, thereby improving the stability of the connection of the two steel pipe bodies.
Description
Technical Field
The utility model belongs to the technical field of seamless steel pipe technique and specifically relates to a seamless steel pipe for high-pressure boiler convenient to butt joint.
Background
The seamless steel tube for the high-pressure boiler is one of boiler tubes, has strict requirements on the steel grade and process for manufacturing the steel tube, and is easy to oxidize and corrode because the high-pressure boiler tube is usually in high-temperature and high-pressure conditions during use, so that the steel tube needs to have high lasting strength, high oxidation and corrosion resistance and good structural stability; its structure of seamless steel pipe for present pressure boiler is for having the steel pipe body and fixing the flange ring at steel pipe body both ends usually, and it has a plurality of flange holes to distribute on the flange ring, and the connection process of two steel pipe bodies is: at first aim at the flange hole on two seamless steel pipes, pass the flange hole on two seamless steel pipes after aiming at in proper order through bolt assembly after that, then screw up bolt assembly to this with two seamless steel pipe fixed connection, current seamless steel pipe when the butt joint, need just can aim at the flange hole on it and the flange hole on another steel pipe body through rotating the steel pipe body, lead to wasting time and energy, the efficiency of construction is low.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in order to solve the problems that the flange hole on the steel pipe body can be aligned with the flange hole on another steel pipe body only by rotating the steel pipe body when the seamless steel pipe is butted in the prior art, time and labor are wasted, and the construction efficiency is low, a seamless steel pipe for a high-pressure boiler convenient to butt is provided.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a seamless steel pipe for high pressure boiler convenient to butt joint, includes the steel pipe body, the left end of steel pipe body is fixed with fixed flange ring, the right-hand member cover of steel pipe body is equipped with moves the flange ring, and is fixed with and is used for moving the annular flange that the flange ring formed the stopping in the axial, move flange ring and steel pipe body sliding connection, it is located the left side of annular flange to move the flange ring, a plurality of flange holes have all been seted up on fixed flange ring and the moving flange ring, flange hole on the fixed flange ring and the flange hole one-to-one on the moving flange ring, threaded connection has locking screw on the moving flange ring, locking screw's thread end tip supports on the outer peripheral face of steel pipe body.
The flange ring is established to the right-hand member cover of steel pipe body to the utilization in this scheme, make the flange ring can be easily rotated, so that move the flange hole of flange ring on it and another seamless steel pipe's flange hole alignment, thereby make the flange hole of two seamless steel pipes can aim at fast, and convenient operation is swift, time saving and labor saving, very big improvement the efficiency of construction, simultaneously, after screwing up the locking screw, can fix the flange ring on the steel pipe body at its place, thereby improve two steel pipe body coupling's stability ability.
Furthermore, a positioning hole is recessed rightwards at the edge of the flange hole on the left side surface of the fixed flange ring, a positioning ring is protruded rightwards at the edge of the flange hole on the right side surface of the movable flange ring, and the positioning ring is matched with the positioning hole; therefore, in the process of butt joint of the two seamless steel pipes, after the flange hole on the movable flange ring of the left seamless steel pipe rotates to be aligned with the flange hole on the fixed flange ring of the right seamless steel pipe, the movable flange ring of the left seamless steel pipe is moved to enable the positioning ring to be inserted into the positioning hole of the right seamless steel pipe, and therefore the two seamless steel pipes can keep the flange holes of the two seamless steel pipes in an aligned state.
Furthermore, a left protective sleeve is sleeved at the left end of the steel pipe body and is in sliding connection with the steel pipe body, the fixed flange ring is located in the left protective sleeve, a right protective sleeve is sleeved at the right end of the steel pipe body and is in sliding connection with the steel pipe body, the annular flange and the movable flange ring are both located in the right protective sleeve, internal threads are formed in the left end of the left protective sleeve, and external threads are formed in the right end of the right protective sleeve; after two seamless steel pipes are connected, through the external screw thread that will be located right protective sheath on the seamless steel pipe of left side and the internal thread fastening that is located left protective sheath on the seamless steel pipe of right side to this moves flange ring, fixed flange ring, locking screw and the bolt assembly all sealed in left protective sheath and right protective sheath with two seamless steel pipe interconnect ends, prevents to be corroded by external humid air, rusts, improves life.
Furthermore, a rubber pad is fixed at the right end of the left protective sleeve, a rubber pad is also fixed at the left end of the right protective sleeve, and the rubber pads are attached to the outer peripheral surface of the steel pipe body; the setting of rubber pad can improve the sealed effect of left protective sheath and right protective sheath.
Furthermore, the rubber pad is made of plastic.
The utility model has the advantages that: the utility model discloses seamless steel pipe for high pressure boiler convenient to butt joint utilizes to establish at the right-hand member cover of steel pipe body and moves the flange ring, it can be easily rotated to move the flange ring, so that the flange hole that moves the flange ring on it aligns with the flange hole of another seamless steel pipe, thereby make the flange hole of two seamless steel pipes can aim at fast, and convenient operation is swift, time saving and labor saving, very big improvement the efficiency of construction, and simultaneously, after screwing up locking screw, can fix moving the flange ring on the steel pipe body at its place, thereby improve the stability ability of two steel pipe body connections.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic view of the seamless steel tube for high pressure boiler convenient for butt joint of the present invention;
FIG. 2 is an enlarged partial schematic view of A of FIG. 1;
fig. 3 is a schematic view of the present invention when two seamless steel pipes are connected.
In the figure: 1. the steel pipe comprises a steel pipe body, 2 parts of a fixed flange ring, 2 parts of 1 parts of a positioning hole, 3 parts of a movable flange ring, 3 parts of 1 part of a positioning ring, 4 parts of an annular flange, 5 parts of a flange hole, 6 parts of a locking screw, 7 parts of a left protective sleeve, 7 parts of 1 part of an internal thread, 8 parts of a right protective sleeve, 8 parts of 1 part of an external thread, 9 parts of a rubber pad, 10 parts of a bolt, 11 parts of a nut.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the invention only in a schematic way, and thus show only the components that are relevant to the invention, and the directions and references (e.g., upper, lower, left, right, etc.) may be used only to help describe the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
Example 1
As shown in fig. 1-3, a seamless steel tube for high-pressure boiler convenient to butt joint, includes steel tube body 1, the left end of steel tube body 1 is fixed with fixed flange ring 2, the right-hand member cover of steel tube body 1 is equipped with movable flange ring 3, and is fixed with and is used for forming the annular flange 4 that stops to movable flange ring 3 in the axial, movable flange ring 3 and steel tube body 1 sliding connection, movable flange ring 3 is located the left side of annular flange 4, a plurality of flange holes 5 have all been seted up on fixed flange ring 2 and the movable flange ring 3, flange hole 5 on the fixed flange ring 2 and the flange hole 5 one-to-one on the movable flange ring 3, the threaded connection has locking screw 6 on the movable flange ring 3, the screw end tip of locking screw 6 supports on the outer peripheral face of steel tube body 1.
The edge of the left side surface of the fixed flange ring 2, which is positioned on the upper flange hole 5, is rightwards sunken with a positioning hole 2-1, the edge of the right side surface of the movable flange ring 3, which is positioned on the upper flange hole 5, is rightwards protruded with a positioning ring 3-1, and the positioning ring 3-1 is matched with the positioning hole 2-1; therefore, in the process of butting two seamless steel pipes, after the flange hole 5 formed by rotating the movable flange ring 3 positioned on the left seamless steel pipe is aligned with the flange hole 5 formed by the fixed flange ring 2 positioned on the right seamless steel pipe, the movable flange ring 3 positioned on the left seamless steel pipe is moved to enable the positioning ring 3-1 to be inserted into the positioning hole 2-1 positioned on the right seamless steel pipe, and therefore the two seamless steel pipes can keep the flange holes 5 thereof in an aligned state.
The left end of the steel pipe body 1 is sleeved with a left protective sleeve 7, the left protective sleeve 7 is connected with the steel pipe body 1 in a sliding mode, the fixed flange ring 2 is located in the left protective sleeve 7, the right end of the steel pipe body 1 is sleeved with a right protective sleeve 8, the right protective sleeve 8 is connected with the steel pipe body 1 in a sliding mode, the annular flange 4 and the movable flange ring 3 are located in the right protective sleeve 8, the left end of the left protective sleeve 7 is provided with an internal thread 7-1, and the right end of the right protective sleeve 8 is provided with an external thread 8-1; after the two seamless steel pipes are connected, the external thread 8-1 of the right protective sleeve 8 on the left seamless steel pipe and the internal thread 7-1 of the left protective sleeve 7 on the right seamless steel pipe are fixed in a threaded mode, so that the movable flange ring 3, the fixed flange ring 2, the locking screw 6 and the bolt assembly of the mutual connecting end of the two seamless steel pipes are completely sealed in the left protective sleeve 7 and the right protective sleeve 8, corrosion and rusting caused by external humid air are prevented, and the service life is prolonged.
A rubber pad 9 is fixed at the right end of the left protective sleeve 7, a rubber pad 9 is also fixed at the left end of the right protective sleeve 8, and the rubber pads 9 are attached to the outer peripheral surface of the steel pipe body 1; the arrangement of rubber pad 9 can improve the sealed effect of left protective sheath 7 and right protective sheath 8.
The rubber pad 9 is made of plastic.
The working principle of the seamless steel tube for the high-pressure boiler convenient for butt joint in the embodiment is as follows:
as shown in fig. 3, first, two seamless steel pipes to be connected are axially aligned, and the right end of the left seamless steel pipe is in contact with the left end of the right seamless steel pipe;
then, rotating the movable flange ring 3 positioned on the left seamless steel tube to align the flange hole 5 of the upper movable flange ring 3 with the flange hole 5 of the upper fixed flange ring 2 positioned on the right seamless steel tube;
then moving the movable flange ring 3 positioned on the left seamless steel pipe to enable the positioning ring 3-1 to be inserted into the positioning hole 2-1 positioned on the right seamless steel pipe, so that the two seamless steel pipes keep the flange holes 5 thereof in an aligned state;
then, a bolt 10 in the bolt assembly sequentially penetrates through a flange hole 5 of a movable flange ring 3 on the left seamless steel pipe and a flange hole 5 of a fixed flange ring 2 on the right seamless steel pipe, then a nut 11 on the bolt 10 is screwed to completely fix the two seamless steel pipes, and then a locking screw 6 is screwed to enable the end part of the threaded end of the locking screw to abut against the steel pipe body 1, so that the connection strength of the movable flange ring 3 and the steel pipe body 1 where the movable flange ring is located is improved; wherein, the right side surface of the movable flange ring 3 is propped against the left side surface of the annular flange 4;
and finally, the external thread 8-1 of the right protective sleeve 8 on the left seamless steel pipe and the internal thread 7-1 of the left protective sleeve 7 on the right seamless steel pipe are fixed in a threaded manner, so that the movable flange ring 3, the fixed flange ring 2, the locking screw 6 and the bolt assembly which are connected with each other of the two seamless steel pipes are completely sealed in the left protective sleeve 7 and the right protective sleeve 8, the corrosion and the rusting of the left protective sleeve and the right protective sleeve by external humid air are prevented, and the service life is prolonged.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. The utility model provides a seamless steel pipe for high pressure boiler convenient to butt joint which characterized in that: including steel pipe body (1), the left end of steel pipe body (1) is fixed with fixed flange ring (2), the right-hand member cover of steel pipe body (1) is equipped with moves flange ring (3), and is fixed with and is used for forming annular flange (4) that stop to moving flange ring (3) in the axial, move flange ring (3) and steel pipe body (1) sliding connection, move flange ring (3) and be located the left side of annular flange (4), a plurality of flange holes (5) have all been seted up on fixed flange ring (2) and moving flange ring (3), flange hole (5) on fixed flange ring (2) and move flange hole (5) one-to-one on flange ring (3), it has locking screw (6) to move threaded connection on flange ring (3), the screw thread end tip of locking screw (6) supports on the outer peripheral face of steel pipe body (1).
2. The seamless steel tube for a high-pressure boiler, which facilitates butting according to claim 1, characterized in that: the edge of the flange hole (5) on the left side surface of the fixed flange ring (2) is recessed rightwards to form a positioning hole (2-1), the edge of the flange hole (5) on the right side surface of the movable flange ring (3) is protruded rightwards to form a positioning ring (3-1), and the positioning ring (3-1) is matched with the positioning hole (2-1).
3. The seamless steel tube for a high-pressure boiler, which facilitates butting according to claim 1, characterized in that: the left end cover of steel pipe body (1) is equipped with left protective sheath (7), left side protective sheath (7) and steel pipe body (1) sliding connection, decide flange ring (2) and be located left protective sheath (7), the right-hand member cover of steel pipe body (1) is equipped with right protective sheath (8), right side protective sheath (8) and steel pipe body (1) sliding connection, annular flange (4) and move flange ring (3) and all be located right protective sheath (8), the left end of left side protective sheath (7) is equipped with internal thread (7-1), the right-hand member of right side protective sheath (8) is equipped with external screw thread (8-1).
4. The seamless steel tube for a high-pressure boiler, which facilitates butting according to claim 3, characterized in that: the right-hand member of left side protective sheath (7) is fixed with rubber pad (9), the left end of right side protective sheath (8) also is fixed with rubber pad (9), rubber pad (9) all laminate with the outer peripheral face of steel pipe body (1).
5. The seamless steel tube for a high-pressure boiler, which facilitates butting according to claim 4, characterized in that: the rubber pad (9) is made of plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020336628.XU CN211901961U (en) | 2020-03-17 | 2020-03-17 | Seamless steel pipe convenient for butt joint for high-pressure boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020336628.XU CN211901961U (en) | 2020-03-17 | 2020-03-17 | Seamless steel pipe convenient for butt joint for high-pressure boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211901961U true CN211901961U (en) | 2020-11-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020336628.XU Active CN211901961U (en) | 2020-03-17 | 2020-03-17 | Seamless steel pipe convenient for butt joint for high-pressure boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211901961U (en) |
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2020
- 2020-03-17 CN CN202020336628.XU patent/CN211901961U/en active Active
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