CN113404950A

CN113404950A - Lap joint flange

Info

Publication number: CN113404950A
Application number: CN202110555585.3A
Authority: CN
Inventors: 王锁成; 徐之靖
Original assignee: Individual
Current assignee: Changzhou Wujin Xueyan Petroleum Chemical Spare Parts Co ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2021-09-17
Anticipated expiration: 2041-05-21
Also published as: CN113404950B

Abstract

The invention relates to the technical field of pipeline connecting pieces, in particular to a lap joint flange, which comprises a first flange plate and a second flange plate, wherein the upper surface of the first flange plate is provided with a limiting groove and a guide groove, the inner wall of the limiting groove is provided with a sealing ring, the lower surface of the second flange plate is fixedly connected with a guide block, the guide block is matched with the guide groove, the upper surface of the second flange plate is fixedly connected with a plug connector, and the inner wall of the plug connector is connected with a baffle in a sliding way. The leakage amount of the pipeline is reduced, and water resources are saved.

Description

Lap joint flange

Technical Field

The invention relates to the technical field of pipeline connecting pieces, in particular to a lap joint flange.

Background

The flange is a part for connecting pipes and is used for connecting pipe ends; the flange on the inlet and the outlet of the equipment is also used for connecting the two pieces of equipment, such as a speed reducer flange, a flange connection or a flange joint, and the flange, the gasket and the bolt are connected with each other to form a detachable connection of a combined sealing structure.

The gasket antiseep is used to current flange, and because the reason of the flange butt joint untidy or vibration can make the gasket position take place the skew, can't effectually prevent the seepage, leads to the pipeline to let out leakage quantity and increase for the water waste, another reason lies in that the sealing washer can lead to warping because of long-time extrusion, makes sealed effect reduce. Accordingly, one skilled in the art has provided a lap joint flange that solves the problems set forth in the background above.

Disclosure of Invention

The invention aims to provide an overlap joint flange, which aims to solve the problems that the position of a gasket is deviated due to irregular butt joint or vibration of flanges, the leakage cannot be effectively prevented, the leakage amount of a pipeline is increased, the water resource is wasted, and the sealing effect is reduced due to the deformation of a sealing ring caused by long-time extrusion.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a lap joint flange, includes first ring flange and second ring flange, spacing groove and guide way have been seted up to the upper surface of first ring flange, the inner wall of spacing groove is provided with the sealing washer, the lower fixed surface of second ring flange is connected with the guide block, guide block and guide way looks adaptation, the last fixed surface of second ring flange is connected with the plug connector, the inner wall sliding connection of plug connector has the baffle.

As a further scheme of the invention: first ring flange includes first disk body, straight screw hole has been seted up to the upper surface of first disk body, the quantity of straight screw hole is four, four straight screw hole is the upper surface that circumference array circumference equidistance set up at first disk body, first through-hole has been seted up to the central point of first disk body upper surface, through setting up straight screw hole, can be convenient for be connected first ring flange and second ring flange, through setting up first through-hole, can with external pipeline welding.

As a still further scheme of the invention: the second ring flange includes the second disk body, the countersunk head bolt hole has been seted up to the upper surface of second disk body, the countersunk head bolt hole is corresponding with the position of plug connector, and the internal diameter of countersunk head bolt hole is less than the width of plug connector, the second through-hole has been seted up to the upper surface of second disk body, through setting up the countersunk head bolt hole, can conveniently be connected with first ring flange, through setting up the second through-hole, can weld the pipeline that external needs butt joint.

As a still further scheme of the invention: the plug connector includes the limiting plate of being connected with fixed surface on the second ring flange, one side fixedly connected with deflector that the second through-hole was kept away from to the limiting plate, the recess has all been seted up on the surface of limiting plate and deflector, and recess and baffle looks adaptation, through setting up limiting plate and deflector, can prevent that the baffle from taking place the skew.

As a still further scheme of the invention: the section of the limiting groove is trapezoidal and is matched with the sealing ring, the sealing ring is made of chloroprene rubber, the section of the sealing ring is waist drum-shaped, an annular hole is formed in the sealing ring, a carbonic acid solution is filled in the annular hole, carbon dioxide gas can be generated when the carbonic acid solution is vibrated, the carbon dioxide in the carbonic acid solution can be accelerated to be separated out under the condition that the flange is vibrated by high temperature or water, the sealing ring with the waist drum-shaped section is expanded by the carbon dioxide, the limiting groove with the trapezoidal section is extruded by the sealing ring, the sealing performance is improved, when the carbon dioxide is slowly dissolved in liquid under the condition of low temperature or no water, the sealing ring is contracted, and the sealing ring can perform expansion and contraction movement under the condition of change of four seasons temperature and water or no water, the deformation caused by long-time extrusion of the sealing ring is prevented.

As a still further scheme of the invention: the position fixedly connected with of limiting plate is kept away from to the upper surface of baffle detains the piece, detains the piece through the setting, can facilitate the use take out the baffle.

As a still further scheme of the invention: the inner wall threaded connection of countersunk head bolt hole has countersunk head bolt, countersunk head bolt's surface and the inner wall threaded connection of straight screw hole, countersunk head bolt's upper surface and the upper surface parallel and level of second ring flange can make first ring flange and second ring flange form through setting up countersunk head bolt and can dismantle the connection.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the lap joint flange, the first flange plate and the second flange plate can be respectively welded with pipelines needing to be butted with the outside, the first flange plate and the second flange plate can be butted flatly by arranging the guide groove and the guide block, so that the offset error is prevented from being generated, and further the sealing ring is prevented from generating position deviation.

2. According to the invention, the first flange plate can be conveniently connected with the second flange plate by arranging the straight threaded hole, and can be welded with an external pipeline by arranging the first through hole; the pipeline butt joint device can be conveniently connected with the first flange plate by arranging the countersunk bolt holes, and can be used for welding external pipelines needing butt joint by arranging the second through holes; through setting up limiting plate and deflector, can prevent that the baffle from taking place the skew.

3. According to the invention, the carbonic acid solution is filled in the annular hole in the sealing ring, so that the separation of carbon dioxide in the carbonic acid solution can be accelerated under the condition that the flange vibrates at high temperature or under the condition that water is introduced to the flange, the carbon dioxide enables the sealing ring with the waist drum-shaped section to expand, and then the sealing ring extrudes the limiting groove with the trapezoid section, so that the sealing performance is improved, the sealing ring is made of chloroprene rubber, the influence of the corrosion of the sealing ring by the carbonic acid solution and the change of high and low temperatures on the sealing ring is prevented, when the carbon dioxide is slowly dissolved in liquid under the condition of low temperature or no water introduction, the sealing ring contracts, so that the sealing ring can perform the expansion and contraction movement under the condition of the change of the temperature in four seasons and the condition that water is introduced or not introduced, and the deformation caused by long-time extrusion of the sealing ring is prevented; the baffle can be conveniently drawn out by arranging the buckling block; through setting up countersunk head bolt, can make first ring flange and second ring flange form to dismantle and be connected.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is an exploded view of the structure of the present invention;

FIG. 3 is a schematic cross-sectional view of the structure of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 3 according to the present invention

Fig. 5 is a cross-sectional view of a seal ring of the present invention.

In the figure: 1. a first flange plate; 101. a first tray body; 102. a straight threaded hole; 103. a first through hole; 2. a second flange plate; 201. a second tray body; 202. countersunk bolt holes; 203. a second through hole; 3. a limiting groove; 4. a guide groove; 5. a seal ring; 501. an annular aperture; 6. a countersunk bolt; 7. a plug-in unit; 701. a limiting plate; 702. a guide plate; 703. a groove; 8. a baffle plate; 9. a guide block; 10. and (6) buckling blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.

Referring to fig. 1 to 5, in the embodiment of the present invention, a lap joint flange includes a first flange plate 1 and a second flange plate 2, a limiting groove 3 and a guide groove 4 are formed on an upper surface of the first flange plate 1, a sealing ring 5 is disposed on an inner wall of the limiting groove 3, a guide block 9 is fixedly connected to a lower surface of the second flange plate 2, the guide block 9 is adapted to the guide groove 4, a plug connector 7 is fixedly connected to an upper surface of the second flange plate 2, a baffle 8 is slidably connected to an inner wall of the plug connector 7, the first flange plate 1 and the second flange plate 2 are respectively welded to a pipeline to be butted with the outside, the first flange plate 1 and the second flange plate 2 can be butted flatly by disposing the guide groove 4 and the guide block 9, so as to prevent an offset error from occurring, and further prevent the sealing ring 5 from generating a position deviation, by disposing the limiting groove 3, the sealing ring 5 can be prevented from being offset due to vibration, thereby make this overlap joint flange can effectually prevent the seepage, the water economy resource.

The first flange plate 1 comprises a first flange plate 101, the upper surface of the first flange plate 101 is provided with four straight threaded holes 102, the four straight threaded holes 102 are circumferentially arranged on the upper surface of the first flange plate 101 in a circumferential array at equal intervals, a first through hole 103 is formed in the center of the upper surface of the first flange plate 101, the first flange plate 1 can be conveniently connected with a second flange plate 2 through the arrangement of the straight threaded holes 102, and the first flange plate 1 can be welded with an external pipeline through the arrangement of the first through hole 103; the second flange plate 2 comprises a second flange plate 201, the upper surface of the second flange plate 201 is provided with a countersunk bolt hole 202, the countersunk bolt hole 202 corresponds to the position of the plug connector 7, the inner diameter of the countersunk bolt hole 202 is smaller than the width of the plug connector 7, the upper surface of the second flange plate 201 is provided with a second through hole 203, the second flange plate can be conveniently connected with the first flange plate 1 by arranging the countersunk bolt hole 202, and pipelines needing to be butted externally can be welded by arranging the second through hole 203; plug connector 7 includes the limiting plate 701 of being connected with fixed surface on the second ring flange 2, and one side fixedly connected with deflector 702 of second through-hole 203 is kept away from to limiting plate 701, and recess 703 is all seted up on the surface of limiting plate 701 and deflector 702, and recess 703 and 8 looks adaptations of baffle, through setting up limiting plate 701 and deflector 702, can prevent that baffle 8 from taking place the skew.

The section of the limiting groove 3 is trapezoidal and is matched with the sealing ring 5, the sealing ring 5 is made of chloroprene rubber, the working temperature of the chloroprene rubber is-54-150 ℃, the sealing ring has good inorganic acid alkali resistance, heat resistance, aging resistance and other performances, so that the sealing ring 5 is prevented from being corroded by a carbonic acid solution and the sealing ring 5 is prevented from being influenced by high and low temperature changes, the section of the sealing ring 5 is waist drum-shaped, an annular hole 501 is formed in the sealing ring 5, the annular hole 501 is filled with a carbonic acid solution, the carbonic acid solution can be cola or snowflake, the carbonic acid solution can generate carbon dioxide gas when being vibrated, the carbonic acid solution is filled in the annular hole 501 in the sealing ring 5, the carbon dioxide precipitation in the carbonic acid solution can be accelerated under the condition that the flange is vibrated by high temperature or water, and the sealing ring 5 with the waist drum-shaped section is expanded by the carbon dioxide, the sealing ring 5 extrudes the limit groove 3 with the trapezoidal section, the sealing performance is improved, when carbon dioxide is slowly dissolved in liquid at low temperature or in the case of no water, the sealing ring 5 contracts, so that the sealing ring 5 can perform expansion and contraction motions under the conditions of change of temperature in four seasons and water flowing or water flowing, and deformation caused by long-time extrusion of the sealing ring 5 is prevented; the position, far away from the limiting plate 701, of the upper surface of the baffle 8 is fixedly connected with a buckling block 10, and the baffle 8 can be conveniently drawn out through the buckling block 10; the inner wall threaded connection of countersunk bolt hole 202 has countersunk bolt 6, and countersunk bolt 6's surface and the inner wall threaded connection of straight screw hole 102, the upper surface parallel and level of countersunk bolt 6 and the upper surface of second ring flange 2 can make first ring flange 1 and second ring flange 2 form through setting up countersunk bolt 6 and can dismantle the connection.

The working principle of the invention is as follows: when the lap joint flange is used, a user firstly welds the first flange plate 1 and the second flange plate 2 with external pipelines to be butted respectively, then puts the sealing ring 5 into the limiting groove 3, inserts the guide block 9 into the guide groove 4, at the moment, the first disk body 101 and the second disk body 201 are completely aligned, the straight threaded hole 102 is aligned with the countersunk head bolt hole 202, then screws the countersunk head bolt 6 into the countersunk head bolt hole 202 and is in threaded connection with the inner wall of the straight threaded hole 102, so that the first flange plate 1 and the second flange plate 2 are connected firmly, and finally inserts the baffle plate 8 along the guide plate 702 to prevent the countersunk head bolt 6 from loosening; by filling the annular hole 501 in the sealing ring 5 with carbonic acid solution, the separation of carbon dioxide in the carbonic acid solution can be accelerated under the condition of high temperature or water-feeding to vibrate the flange, the carbon dioxide expands the sealing ring 5 with the waist drum-shaped section, so that the sealing ring 5 extrudes the limiting groove 3 with the trapezoidal section, the sealing property is improved, the sealing ring 5 is made of chloroprene rubber, so that the sealing ring 5 is prevented from being corroded by carbonic acid solution and the influence of high and low temperature changes on the sealing ring 5 is prevented, when carbon dioxide is slowly dissolved in liquid under the condition of low temperature or no water is introduced, the sealing ring 5 shrinks, so that the sealing ring 5 can perform expansion and shrinkage movements under the conditions of change of temperature in four seasons and water introduction or water non-introduction, thereby prevented because of the produced deformation of long-time extrusion sealing washer 5, made this overlap joint flange can effectually prevent the seepage, reduced the leakage quantity of pipeline, the water economy resource.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A lap joint flange, includes first ring flange (1) and second ring flange (2), its characterized in that: spacing groove (3) and guide way (4) have been seted up to the upper surface of first ring flange (1), the inner wall of spacing groove (3) is provided with sealing washer (5), the lower fixed surface of second ring flange (2) is connected with guide block (9), guide block (9) and guide way (4) looks adaptation, the last fixed surface of second ring flange (2) is connected with plug connector (7), the inner wall sliding connection of plug connector (7) has baffle (8).

2. A lap joint flange according to claim 1, wherein: first ring flange (1) includes first disk body (101), straight screw hole (102) have been seted up to the upper surface of first disk body (101), the quantity of straight screw hole (102) is four, four straight screw hole (102) are the upper surface that circumference array circumference equidistance set up at first disk body (101), first through-hole (103) have been seted up to the central point of first disk body (101) upper surface.

3. A lap joint flange according to claim 1, wherein: the second flange plate (2) comprises a second flange plate body (201), countersunk bolt holes (202) are formed in the upper surface of the second flange plate body (201), the positions of the countersunk bolt holes (202) and the plug connectors (7) are corresponding, the inner diameters of the countersunk bolt holes (202) are smaller than the width of the plug connectors (7), and second through holes (203) are formed in the upper surface of the second flange plate body (201).

4. A lap joint flange according to claim 1, wherein: plug connector (7) include limiting plate (701) of being connected with fixed surface on second ring flange (2), one side fixedly connected with deflector (702) of second through-hole (203) are kept away from to limiting plate (701), recess (703) are all seted up on the surface of limiting plate (701) and deflector (702), and recess (703) and baffle (8) looks adaptation.

5. A lap joint flange according to claim 1, wherein: the cross-section of spacing groove (3) is trapezoidal and with sealing washer (5) looks adaptation, the material of sealing washer (5) is chloroprene rubber, the cross-section of sealing washer (5) is waist drum-shaped, and inside being equipped with annular hole (501) of sealing washer (5), annular hole (501) intussuseption is filled with carbonic acid solution, and this carbonic acid solution can produce carbon dioxide gas when receiving vibrations.

6. A lap joint flange according to claim 1, wherein: the position, far away from the limiting plate (701), of the upper surface of the baffle (8) is fixedly connected with a buckling block (10).

7. A lap joint flange according to claim 3, wherein: the inner wall threaded connection of countersunk head bolt hole (202) has countersunk head bolt (6), the surface of countersunk head bolt (6) and the inner wall threaded connection of straight screw hole (102), the upper surface of countersunk head bolt (6) and the upper surface parallel and level of second ring flange (2).