CN210860189U

CN210860189U - Flange connecting piece

Info

Publication number: CN210860189U
Application number: CN201921750741.6U
Authority: CN
Inventors: 赵志刚; 刘延彪; 刘霞; 褚峰; 王申; 杜娟; 赵雪; 石菊
Original assignee: Beijing Golden River Water Conservancy Construction Group Co ltd
Current assignee: Beijing Golden River Water Conservancy Construction Group Co ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-06-26
Anticipated expiration: 2029-10-17

Abstract

The utility model relates to a flange connecting piece, include the relative ring flange that is in the same place through a plurality of bolted connection, be provided with the intercommunicating pore that runs through the ring flange on the ring flange, be located the communicating pipe that is provided with length change between the relative ring flange, the hole of communicating pipe is linked together with the intercommunicating pore on the relative ring flange respectively, communicating pipe includes the body, the intermediate position department of body is provided with the flexible section that length change, body length direction's both ends outside is provided with solid fixed ring respectively, gu the sealed laminating of fixed ring is on the surface of ring flange, communicating pipe is provided with the butt joint department of ring flange and links together communicating pipe and ring flange and makes solid fixed ring be in the coupling. The utility model discloses have and appear under not hard up condition at the bolt because of pipeline vibration, still can block rivers and leak away from between two connection pads through the changeable connecting pipe of length.

Description

Flange connecting piece

Technical Field

The utility model belongs to the technical field of the connecting piece technique and specifically relates to a flange connecting piece is related to.

Background

The flange plate connection is that two pipelines, pipe fittings or equipment are respectively fixed on a flange plate, a flange plate pad is arranged between the two flange plates and fastened together by bolts, and the connection is completed. Some pipe fittings and equipment are provided with flanges, and the flange connection is also the object. The flange plate connection is an important connection mode for pipeline construction. The flange plate is convenient to connect and use and can bear larger pressure. In industrial pipelines, the flange plate is widely used for connection, and is widely applied to basic engineering of chemical engineering, construction, water supply, drainage, petroleum, light and heavy industries, refrigeration, sanitation, water heating, fire fighting, electric power, aerospace, shipbuilding and the like.

The existing flange plate connecting structure is that a flange plate pad is added between two flange plates, and then the two flange plates are fastened together by bolts. Because the flange plate pad and the flange plate are mutually independent, when the bolt is not locked to the maximum degree, good sealing performance between the two flange plates cannot be achieved; in addition; mechanical vibration exists in the using process, the flange plates can be loosened after a long time, if the bolts are not locked in time, the sealing performance is reduced, and therefore water in the pipeline leaks from the connecting positions of the flange plates.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a flange joint spare, it has and appears under not hard up condition at the bolt because of pipe vibration, still can block rivers and leak away from between two connection pads through the changeable connecting pipe of length.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a flange connecting piece, includes the relative ring flange that is in the same place through a plurality of bolted connection, be provided with the intercommunicating pore that runs through the ring flange on the ring flange, be located the communicating pipe that is provided with length change between the relative ring flange, the hole of communicating pipe is linked together with the intercommunicating pore on the relative ring flange respectively, communicating pipe includes the body, the intermediate position department of body is provided with the flexible section that length change, body length direction's both ends outside is provided with solid fixed ring respectively, gu the sealed laminating of fixed ring is on the surface of ring flange, the butt joint department of communicating pipe and ring flange is provided with and links together communicating pipe and ring flange and makes solid fixed ring be.

Through adopting above-mentioned technical scheme, through set up communicating pipe that length can change between relative ring flange, when the bolt of flange of connection appears becoming flexible because of mechanical vibration, the length of communicating pipe can be along with the removal synchronous extension of ring flange, make the both ends of communicating pipe can not appear the gap because of the relative movement of ring flange with the junction of ring flange, make the both ends of communicating pipe still can with the ring flange between sealed continuous to under the not hard up condition appears in the bolt, water can not follow and ooze between the relative ring flange.

The utility model discloses further set up to: the connecting assembly comprises a connecting ring which is fixed on one side surface of the communicating pipe of the flange plate and connected with the butt joint pipe and a rotary ring sleeve inside, wherein the butt joint pipe and the rotary ring are connected to the outside of the pipe body, the connecting ring is located between the fixing ring and the telescopic section, the connecting ring is in threaded connection with the butt joint pipe, and the connecting ring is in butt joint with one side surface of the fixing ring, which deviates from the flange plate.

Through adopting above-mentioned technical scheme, only need with go-between and butt joint pipe threaded connection together, can be quick be connected to communicating pipe and ring flange together.

The utility model discloses further set up to: the connecting ring comprises a connecting part connected with the butt joint pipe through threads and a butt joint part positioned outside the butt joint pipe, and an anti-skidding structure is arranged on the outer side surface of the butt joint part.

Through adopting above-mentioned technical scheme, be convenient for rotate the go-between to link the go-between together with the butt joint pipe.

The utility model discloses further set up to: the butt joint pipe is characterized in that an inner thread is formed in the hole wall of the inner hole of the butt joint pipe, an outer thread matched with the inner thread on the hole wall of the inner hole of the butt joint pipe is arranged on the outer surface of the connecting portion, and the inner thread and the outer thread are both fine threads.

Through adopting above-mentioned technical scheme, through adopting fine thread to can make the junction of butt joint pipe and connecting portion have good leakproofness.

The utility model discloses further set up to: the utility model discloses a mounting ring, including solid fixed ring, go-between and go-between, gu fixed ring is provided with towards one side surface of go-between and is the annular mounting ring groove of circle, the centre of a circle of mounting ring groove is located solid fixed ring's axis, the go-between is provided with the annular bulge loop of circle towards solid fixed ring's a side surface, the centre of a circle of bulge loop is located on the axis of go-between, bulge loop and mounting ring groove phase-match, the bulge loop stretches into the inside of mounting ring groove.

Through adopting above-mentioned technical scheme, ensure to be in coaxial state between solid fixed ring and the go-between to compress tightly solid fixed ring at the go-between and make solid fixed ring laminating when the ring flange surface, solid fixed ring can the atress even, thereby the difficult gap that appears between solid fixed ring and the ring flange that makes.

The utility model discloses further set up to: the fixing ring is connected with the pipe body through threads.

Through adopting above-mentioned technical scheme, make and to dismantle between solid fixed ring and the body to be convenient for install the go-between on the body.

The utility model discloses further set up to: the opposite side surfaces of the two connecting rings on the pipe body are attached together.

Through adopting above-mentioned technical scheme, laminate two go-between together to hide communicating pipe, avoid the damage of communicating pipe.

The utility model discloses further set up to: a seal is located between the two connection rings.

Through adopting above-mentioned technical scheme, further increase the leakproofness between the relative ring flange.

The utility model discloses further set up to: the flexible section of body is in the state of compressed.

By adopting the technical scheme, after the bolt is loosened, the telescopic section can be automatically extended due to the fact that the telescopic section is in a compressed state, so that the phenomenon that the flange plate pulls the butt joint pipe to cause a gap at the joint of the flange plate and the fixing ring and water seepage occurs is prevented; the flexible section is in the state of compressed simultaneously, and flexible section can exert the power that moves to the ring flange direction to the body of both sides to make solid fixed ring can be inseparabler laminating on the surface of ring flange.

The utility model discloses further set up to: the sealing ring is arranged on the end face, facing the flange, of the fixing ring, an annular groove is formed in the surface, facing the flange, of one side of the fixing ring, the sealing ring is embedded into the annular groove, and the sealing ring is exposed from a notch of the annular groove.

Through adopting above-mentioned technical scheme, be convenient for install the sealing washer on solid fixed ring's surface.

To sum up, the utility model discloses a beneficial technological effect does:

1. when the bolts for connecting the flange plates are loosened due to mechanical vibration, the length of the communication pipe can be synchronously extended along with the movement of the flange plates, so that gaps can not appear at the connecting parts of the two ends of the communication pipe and the flange plates due to the relative movement of the flange plates, the two ends of the communication pipe can still be connected with the flange plates in a sealing manner, and water can not seep out from the opposite flange plates under the condition that the bolts are loosened;

2. after the bolts are loosened, the telescopic sections can be automatically extended due to the fact that the telescopic sections are in a compressed state, and therefore the situation that the flange plate pulls the butt joint pipe, gaps occur at the joint of the flange plate and the fixing ring, and water seepage occurs is avoided;

3. because flexible section department is in the state of compressed, flexible section can exert the power that one removed to the ring flange direction to the body of both sides to make solid fixed ring can be inseparabler the laminating on the surface of ring flange.

Drawings

FIG. 1 is a schematic view of a flange connection;

FIG. 2 is a schematic structural view of a connecting disc and a butt-joint pipe;

FIG. 3 is a cross-sectional view of a flange connection;

FIG. 4 is an exploded view of a flange connection;

FIG. 5 is a schematic view of the structure of the butt-joint pipe;

fig. 6 is a structural view of the connection ring.

In the figure, 1, a flange plate; 11. a communicating hole; 12. perforating; 2. butt-joint pipes; 3. a communicating pipe; 31. a pipe body; 311. a telescopic section; 32. a fixing ring; 321. mounting a ring groove; 322. an annular groove; 4. a connecting ring; 41. a convex ring; 42. a connecting portion; 43. a docking portion; 431. convex edges; 44. an annular seal groove; 45. avoiding concave holes; 5. and (5) sealing rings.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a flange connecting piece, including relative ring flange 1 through a plurality of bolted connection together, ring flange 1 is discoid. A communication hole 11 penetrating through the flange plate 1 is formed in the center of the surface of the flange plate 1, and the axis of the communication hole 11 and the axis of the flange plate 1 are positioned on the same straight line. The surface of the flange plate 1 is provided with a plurality of through holes 12, the through holes 12 penetrate through the flange plate 1, and all the through holes 12 are arranged in a circumferential array by taking the circle center of the communicating hole 11 as the center.

When the opposed flanges 1 are connected together by bolts, the communication holes 11 of the opposed flanges 1 are opposed to each other with the through holes 12 of the flanges 1 opposed to each other, and the bolts are passed through the opposed through holes 12 of the flanges 1 to connect the opposed flanges 1 together.

Referring to fig. 3 and 4, on the opposite side surface of the flange 1. The surface of the flange plate 1 is provided with a butt joint pipe 2 which is coaxial with the flange plate 1, and the butt joint pipe 2 and the flange plate 1 are integrally processed. The inner hole of the butt joint pipe 2 and the inner hole of the flange plate 1 are coaxially arranged. The diameter of the inner hole of the butt joint pipe 2 is larger than that of the inner hole of the flange plate 1, and the outer diameter of the butt joint pipe 2 is smaller than that of the flange plate 1. The inner hole wall plate of the butt joint pipe 2 is provided with internal threads.

A communicating pipe 3 with variable length is arranged between the butt joint pipes 2 on the opposite flange plates 1, and two ends of the communicating pipe 3 in the length direction respectively extend into the butt joint pipes 2 on the opposite flange plates 1. The two ends of the communication pipe 3 in the length direction are respectively fixed with the butt joint pipe 2 through the connecting rings 4 sleeved at the two ends of the communication pipe 3 in the length direction. The connecting ring 4 is rotatably connected to the outside of the butt joint pipe 2, and the connecting ring 4 is in threaded connection with the butt joint pipe 2. The inner holes of communication pipes 3 are disposed opposite to communication holes 11 of flange plates 1, respectively, so that communication holes 11 of flange plates 1 are communicated with each other through communication pipes 3.

Referring to fig. 3 and 5, communication pipe 3 includes a pipe body 31 having a telescopic section 311 at a middle position in a longitudinal direction, and an outer diameter of pipe body 31 is larger than a diameter of communication hole 11 in flange 1. The outside cover in the both ends of 31 length directions of body is equipped with solid fixed ring 32, and the screw thread is connected between solid fixed ring 32 and the body 31, adopts fine thread to link to each other between solid fixed ring 32 and the body 31. The outer diameter of the securing ring 32 is smaller than the diameter of the interface tube 2 so that the securing ring 32 can protrude into the interior of the interface tube 2. The axial length of the securing ring 32 is shorter than the axial length of the interface tube 2 so that the securing ring 32 can be fully plugged into the interior of the interface tube 2.

The telescopic section 311 is integrally formed with the tube 31. The wall of the tube in the axial cross-section of the telescoping section 311 is wavy. By providing the pipe wall in a wave shape, communication pipe 3 can be adjusted in length in the axial direction.

Referring to fig. 3 and 6, the connection ring 4 is sleeved on the docking pipe 2 and located between the telescopic section 311 and the fixing ring 32. A circular ring-shaped mounting ring groove 321 is formed in the surface of the fixing ring 32 facing the connecting ring 4, and the center of the mounting ring groove 321 is located on the axis of the fixing ring 32. A circular protruding ring 41 protruding into the mounting ring groove 321 is provided on a side surface of the connection ring 4 facing the fixed ring 32, and the protruding ring 41 is integrally formed with the connection ring 4. The centre of the male ring 41 is located on the axis of the connecting ring 4. The male ring 41 can rotate along the mounting ring groove 321. The connecting ring 4 and the fixing ring 32 are always coaxial by the fitting ring groove 321 and the protruding ring 41.

The body of the connecting ring 4 comprises a connecting part 42 and a butting part 43, wherein the connecting part 42 and the butting part 43 are integrally formed, the outer surface of the connecting part is provided with an external thread matched with the internal thread on the hole wall of the inner hole of the butt joint pipe 2, and the diameter of the butting part 43 is larger than that of the inner hole of the butt joint pipe 2. The internal thread on the hole wall of the inner hole of the butt joint pipe 2 and the external thread on the external surface of the connecting part 42 adopt fine threads. The connecting portion 42 is located at an end facing the fixing ring 32 and the abutting portion is located at an end facing away from the fixing ring 32, so that the connecting portion 42 is threadedly connected to the abutting pipe 2 and the abutting portion 43 is located outside the abutting pipe 2.

A plurality of protruding ribs 431 are arranged on the outer side surface of the abutting part 43 along the axial direction of the connecting ring 4 along the length direction, and the protruding ribs 431 and the abutting part 43 are integrally formed. The ribs 431 are arranged at equal intervals in the circumferential direction of the abutting portion 43. The surface of the abutting portion 43 is roughened by the ridge 431, thereby facilitating the rotation of the connection ring 4.

Referring to fig. 3, on the opposite side surfaces of the two connection rings 4, the connection ring 4 is provided with an annular seal groove 44 which surrounds the inner hole of the connection ring 4, and the annular seal grooves 44 on the two connection rings 4 are arranged oppositely. When the opposite side surfaces of the two connection rings 4 of the communication pipe 3 are fitted together, the annular seal grooves 44 of the connection rings 4 are opposed to each other to form a mounting groove. The sealing ring 5 is arranged in the mounting groove, and when the two opposite surfaces of the two connecting rings 4 are attached, the sealing ring 5 in the mounting groove is in a squeezed state.

An annular groove 322 which surrounds an inner hole of the fixing ring 32 is formed in the surface of one side, away from the connecting ring 4, of the fixing ring 32, a sealing ring 5 is embedded in the annular groove 322, and the sealing ring 5 extends out of a notch of the annular groove 322. When the connecting ring 4 is connected to the butt-joint pipe 2, the connecting ring 4 moves towards one end of the butt-joint pipe 2 close to the flange 1, so as to push the fixing ring 32 to move towards the flange 1 until the sealing ring 5 on the fixing ring 32 abuts against the surface of the flange 1, and the sealing ring 5 is in a squeezed state.

The one end that the go-between 4 that is located communicating pipe 3 length direction both ends respectively is relative, and the surface of go-between 4 is seted up dodges shrinkage pool 45 with the coaxial setting of the hole of go-between 4, dodges shrinkage pool 45's aperture and is greater than the maximum diameter of flexible section on communicating pipe 3. When the opposite surfaces of the two connecting rings 4 are attached together, the telescopic section 311 on the communication pipe 3 is located in a space formed by the butt joint of the two avoidance concave holes 45 in the two connecting rings 4.

When the flange connecting piece is installed, firstly, two ends of the communication pipe 3 in the length direction are respectively opposite to the butt joint pipes 2 on the opposite flange plates 1, and the connecting rings 4 at the two ends of the communication pipe 3 in the length direction are respectively connected with the butt joint pipes 2 in a threaded manner until the fixing rings 32 at the two ends of the communication pipe 3 in the length direction are tightly attached to the surface of the flange plate 1. Finally, the opposite flanges 1 are bolted together until the opposite surfaces of the two connecting rings 4 are brought together. When the opposing surfaces of the fastening ring 4 are brought together, the telescoping section 311 is in a compressed state.

When the bolt appears not hard up, appear the gap between the go-between 4 of laminating mutually, be in at this moment by the separation and the automatic extension of length between the solid fixed ring of laminating mutually under the oppression state, avoid appearing the condition of infiltration.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a flange connecting piece, includes relative ring flange (1) together through a plurality of bolted connection, be provided with intercommunicating pore (11) that run through ring flange (1) on ring flange (1), its characterized in that: be located and be provided with communicating pipe (3) that length can change between relative ring flange (1), the hole of communicating pipe (3) is linked together with intercommunicating pore (11) on relative ring flange (1) respectively, communicating pipe (3) are including body (31), the intermediate position department of body (31) is provided with flexible section (311) that length can change, body (31) length direction's both ends outside is provided with solid fixed ring (32) respectively, gu fixed ring (32) seal the laminating on the surface of ring flange (1), the butt joint department of communicating pipe (3) and ring flange (1) is provided with and links together communicating pipe (3) and ring flange (1) and makes solid fixed ring (32) be in the coupling assembling of laminating under ring flange (1) surface state.

2. The flange connection according to claim 1, wherein: coupling assembling is including fixing flange dish (1) towards communicating pipe (3) a side surface and will fix solid ring (32) cover at inside butt joint pipe (2) and the go-between (4) of rotary connection in body (31) outside, go-between (4) are located between solid ring (32) and flexible section (311), go-between (4) and butt joint pipe (2) between the screw thread link to each other, go-between (4) and solid ring (32) deviate from a side surface looks butt of flange dish (1).

3. The flange connection according to claim 2, wherein: the connecting ring (4) comprises a connecting part (42) in threaded connection with the butt joint pipe (2) and a butt joint part (43) positioned outside the butt joint pipe (2), and an anti-skidding structure is arranged on the outer side surface of the butt joint part (43).

4. The flange connection of claim 3, wherein: an inner thread is formed on the hole wall of the inner hole of the butt joint pipe (2), an outer thread matched with the inner thread on the hole wall of the inner hole of the butt joint pipe (2) is arranged on the outer surface of the connecting portion (42), and the inner thread and the outer thread are both fine threads.

5. The flange connection according to claim 2, wherein: fixed ring (32) are provided with towards one side surface of go-between (4) and are annular installation ring groove (321), the centre of a circle of installation ring groove (321) is located the axis of fixed ring (32), go-between (4) are provided with annular bulge loop (41) towards one side surface of fixed ring (32), the centre of a circle of bulge loop (41) is located on the axis of go-between (4), bulge loop (41) and installation ring groove (321) phase-match, bulge loop (41) stretch into the inside of installation ring groove (321) and can rotate in the inside of installation ring groove (321).

6. The flange connection according to claim 1, wherein: the fixing ring (32) is connected with the pipe body (31) through threads.

7. The flange connection according to claim 1, wherein: the opposite side surfaces of the two connecting rings (4) on the tube body (31) are attached together.

8. The flange connection of claim 7, wherein: a sealing element is arranged between the two connecting rings (4).

9. The flange connection according to claim 1, wherein: the telescopic section (311) of the pipe body (31) is in a compressed state.

10. The flange connection according to claim 1, wherein: gu fixed ring (32) are provided with the sealing washer on the one end terminal surface of ring flange (1), gu fixed ring (32) are provided with annular groove (322) towards a side surface of ring flange (1), the sealing washer embedding inside annular groove (322), the sealing washer exposes from the notch of annular groove (322).