CN218863523U

CN218863523U - Inflatable flange

Info

Publication number: CN218863523U
Application number: CN202223149339.7U
Authority: CN
Inventors: 陈赟; 杨雨; 周冬
Original assignee: Chengdu Kailin Machinery Trade Co ltd
Current assignee: Chengdu Kailin Machinery Trade Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-04-14
Anticipated expiration: 2032-11-25

Abstract

The utility model provides an inflatable flange, which comprises a first flange plate and a second flange plate, wherein the first flange plate and the second flange plate are connected through bolts, a groove group is arranged on the inner side wall of the first flange plate or/and the second flange plate, an inflatable sealing element is arranged in the groove group, and a first connecting head is arranged on the inflatable sealing element; the first flange plate or the second flange plate is provided with an inflation head and a first connecting switch, the inflation head and the first connecting switch are arranged on the same flange plate, and the first connecting head and the inflation head are respectively connected with one end of the first connecting switch in a sealing mode. First ring flange and second ring flange pass through the bolt fastening back, aerify inflatable seal spare through aerifing the head, and inflatable seal spare's outer wall can be connected with the cell wall interference of groove group, and inflatable seal spare has accomplished sealedly to first ring flange and second ring flange promptly, prevents that the inside medium of flange from overflowing from the clearance. When the maintenance personnel check that the flange leaks, only the inflating sealing element needs to be inflated again through the inflator.

Description

Inflatable flange

Technical Field

The utility model relates to a pipeline flange field, concretely relates to aerify flange.

Background

When a long-distance conveying pipeline is installed, pipeline flanges are arranged at certain intervals to connect two adjacent pipelines, and flange connection is an important connection mode for pipeline construction. The flange connection is convenient to use, can bear large pressure, and in subsequent maintenance, maintainers can overhaul pipelines conveniently by detaching the flanges.

Due to long-distance pipeline transportation, the pressure inside the pipeline is high, so that the sealing performance of the flange is high, and the joint of the flange is sealed by the conventional flange in a mode of generally using a gasket. The sealing performance in this manner is greatly affected by temperature, especially in the north of large temperature variations. In summer, the gasket and the flange are subjected to thermal expansion, and the sealing performance is good; in winter, the gasket and the flange shrink when meeting cold, the gap of the flange is increased, the tightness of flange connection is poor, and a medium in a pipeline is easy to overflow from the gap. In addition, after the clearance increases, the packing ring in the clearance is under the influence of gravity, and is easy for the tenesmus, and maintainer need dismantle the back with the fixed screw on the flange, and whether the check packing ring is still in the normal position, just can fasten the flange, has increased maintainer's work load.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides an inflatable flange, which comprises a first flange plate and a second flange plate, wherein the first flange plate and the second flange plate are connected through bolts; the first flange plate or the second flange plate is provided with an inflation head and a first connecting switch, the inflation head and the first connecting switch are arranged on the same flange plate, and the first connecting head and the inflation head are respectively connected with one end of the first connecting switch in a sealing mode. After the first flange plate and the second flange plate are fixed through the bolts and the inflatable sealing element is inflated through the inflation head, the outer wall of the inflatable sealing element can be in interference connection with the groove wall of the groove group, namely, the inflatable sealing element is sealed for the first flange plate and the second flange plate, and the medium inside the flange is prevented from overflowing from the gap. When the maintenance personnel check that the flange leaks, only the inflating sealing element needs to be inflated again through the inflator.

The utility model provides a technical problem, the technical scheme of adoption as follows:

an inflatable flange comprises a first flange plate and a second flange plate, wherein the first flange plate and the second flange plate are connected through bolts, a groove group is arranged on the inner side wall of the first flange plate or/and the second flange plate, an inflatable sealing element is arranged in the groove group, and a first connecting head is arranged on the inflatable sealing element;

the first flange plate or the second flange plate is provided with an inflation head and a first connecting switch, the inflation head and the first connecting switch are arranged on the same flange plate, and the first connecting head and the inflation head are respectively connected with one end of the first connecting switch in a sealing mode.

Further, the groove group comprises a first groove and a second groove, a connecting groove is formed between the first groove and the second groove, and the first groove and the second groove are communicated through the connecting groove.

Further, the inflatable sealing element is matched with the shape of the groove group; the inflatable sealing element comprises a first sealing ring and a second sealing ring, the first sealing ring is positioned in the first groove, and the second sealing ring is positioned in the second groove.

Furthermore, the first connecting head is arranged on the peripheral wall of the first sealing ring or the peripheral wall of the second sealing ring, and a gasket is arranged on the first connecting head.

Furthermore, a second connecting switch is arranged in the connecting groove, and the first sealing ring and the second sealing ring are connected through the second connecting switch.

Furthermore, a third connector is arranged on the peripheral wall of the first sealing ring, a second connector is arranged on the peripheral wall of the second sealing ring, one end of the second connector and one end of the third connector are respectively detachably and hermetically connected with one end of the second connecting switch, and the first sealing ring and the second sealing ring can be separated into two independent sealing rings through the second connecting switch.

Furthermore, the first connecting switch and the second connecting switch are both provided with a rotating head and a key which can be separated from the rotating head and is matched with the rotating head;

the outer side wall of the flange plate provided with the first connecting switch and the second connecting switch is provided with an insertion hole, the rotating head is positioned in the insertion hole, and the key is connected with the rotating head and matched with the rotating head to control the first connecting switch and the second connecting switch to be opened and closed.

Furthermore, the second connector is connected with the connecting groove in a sealing mode, and when the first flange plate and the second flange plate are installed in place, the side wall of the second connector can be abutted to the inner side wall of the flange plate which is not provided with the groove group.

Furthermore, one end of the inflation head is connected with one end of the first connecting switch, the other end of the inflation head is arranged on the peripheral wall of the first flange plate or the second flange plate, and the inflation head is externally connected with an inflation instrument and/or a pressure measuring instrument.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model provides an inflatable flange replaces current packing ring through setting up inflatable seal spare, through aerifing inflatable seal spare, makes its outer wall be connected with the cell wall interference of groove group, can prevent that the medium in the flange from passing through the gap of ring flange junction and leaking. The air pressure in the inflatable sealing element reaches a certain value, so that the sealing performance of the flange can be ensured for a long time.

2. The first connecting switch, the second connecting switch, first sealing washer and the second sealing washer that this application set up, first connecting switch is used for the first sealing washer of switching, and the second connecting switch is used for the first sealing washer of switching and second sealing washer, is provided with two-layer sealed protection promptly, and when gas leakage appeared in one of them sealing washer, another sealing washer also can seal the flange.

3. First sealing washer and first connecting switch, second connecting switch are respectively through first connector and second connector swing joint, and second sealing washer and second connecting switch pass through third connector swing joint, and when first sealing washer or/and second sealing washer need be changed, only need with its and first connecting switch or/and second connecting switch separation can take out the change, and the later maintenance is simple and convenient.

4. In later maintenance work, if the flange leaks, maintenance personnel only need to externally connect an inflating instrument through the inflating head, then open the first connecting switch and the second connecting switch, and can prevent the flange from continuously leaking by inflating air into the inflating sealing element.

5. In the later maintenance work, maintainer can also open first linked switch and second linked switch through the external pressure measurement instrument of inflation head, surveys the atmospheric pressure in the inflatable seal spare to judge the leakproofness of flange and whether appear leaking.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural view of an inflatable flange provided by the present invention;

fig. 2 is a schematic view of an internal structure of an inflatable flange provided by the present invention;

FIG. 3 is an enlarged schematic view of FIG. 2 at I;

fig. 4 is a schematic structural view of the flange plate provided with the insertion hole according to the present invention;

fig. 5 is a schematic structural view of the key installed on the rotary head according to the present invention.

An icon: 101. a first flange plate; 103. a second flange plate; 107. an inflation head; 108. an insertion hole; 109. a first connecting switch; 110. a gas-filled seal; 113. a first seal ring; 115. a second seal ring; 117. a second connector; 119. a third connector; 130. a groove group; 131. a first groove; 133. a second groove; 135. connecting grooves; 137. a second connection switch; 139. rotating the head; 141. a key.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The present invention will be described in detail with reference to fig. 1 to 5.

Referring to fig. 1 and 2, an air inflation flange includes a first flange plate 101 and a second flange plate 103, wherein the first flange plate 101 and the second flange plate 103 are respectively provided with a fixing hole, and bolts are inserted through the fixing holes to fix the first flange plate 101 and the second flange plate 103 together.

An inflation head 107 and a first connecting switch 109 are arranged on the first flange plate 101 or the second flange plate 103, the inflation head 107 and the first connecting switch 109 are arranged on the same flange plate, one end of the inflation head 107 is connected with one end of the first connecting switch 109, the other end of the inflation head 107 is arranged on the peripheral wall of the first flange plate 101 or the second flange plate 103, the inflation head 107 is used for externally connecting an inflation instrument and a pressure measuring instrument, and an interface of the inflation head 107 can be suitable for the existing inflation instrument and pressure measuring instrument. The inner side wall of the first flange plate 101 or/and the second flange plate 103 is provided with a groove group 130, an inflatable sealing element 110 is arranged in the groove group 130, the inflatable sealing element 110 is provided with a first connecting head, and one end of the first connecting head is detachably and hermetically connected with the other end of the first connecting switch 109. First connection switch 109 is used to open and close the passage formed by inflation head 107 and the first connection head. After the first flange 101 and the second flange 103 are fixed, the installer opens the first connection switch 109, inflates gas into the inflatable sealing element 110 through the inflation head 107 to make the gas pressure in the inflatable sealing element 110 reach a certain value, for example, 3.0Mpa, and then closes the first connection switch 109, so that the first flange 101 and the second flange 103 are in a sealed state, and the medium in the pipeline is prevented from leaking out of the connection. Even if the ambient temperature is reduced, the air pressure in the pneumatic sealing assembly 110 is slightly reduced, and the air pressure value in the pneumatic sealing assembly 110 is still higher than the air pressure value for normal operation, so that the pneumatic sealing assembly 110 can enable the flange to be in a sealing state and to normally operate in a low-temperature environment.

In the later maintenance process, a maintenance person can determine whether the sealing performance of the flange is good or not by using a pressure measuring instrument to check the air pressure in the inflatable sealing element 110, and when the environmental temperature is reduced, the maintenance person fills a proper amount of air into the inflatable sealing element 110, so that the sealing performance of the inflatable sealing element 110 can be improved, and the first flange plate 101 and the second flange plate 103 do not need to be detached and separated for checking.

Specifically, the groove group 130 includes a first groove 131 and a second groove 133, a connection groove 135 is disposed between the first groove 131 and the second groove 133, and the first groove 131 and the second groove 133 are communicated through the connection groove 135. The inflatable seal 110 is adapted to the shape of the groove set 130, i.e. the inflatable seal 110 comprises a first sealing ring 113 and a second sealing ring 115, the first sealing ring 113 being located in the first groove 131 and the second sealing ring 115 being located in the second groove 133.

The groove group 130 may be provided only on the end face of the first flange plate 101 or the second flange plate 103, or the groove group 130 may be provided on the end faces of the first flange plate 101 and the second flange plate 103, respectively, and when the groove group 130 is provided on the end faces of the first flange plate 101 and the second flange plate 103, the groove group 130 on the two flange plates should be arranged in a staggered manner, so that the first sealing ring 113 and the second sealing ring 115 can be attached to the end faces of the flange plates on the opposite sides, and in this embodiment, the groove group 130 is provided only on the end face of the second flange plate 103.

Before the first sealing ring 113 and the second sealing ring 115 are inflated for the first time, the first sealing ring 113 and the second sealing ring 115 are respectively positioned in the first groove 131 and the second groove 133, so that the situation that the first sealing ring 113 and the second sealing ring 115 are possibly extruded to be damaged during installation and sealing cannot be performed is prevented.

Specifically, the first connection head is disposed on a peripheral wall of the first sealing ring 113, and the first connection head is detachably and hermetically connected to the first connection switch 109. Of course, the first connection head may be provided on the peripheral wall of the second gasket 115. Preferably, a gasket is disposed on the first connector, and when the first connector is connected to the first connection switch 109, the gasket is pressed to ensure the sealing property when the first connector and the first connection switch are connected.

Referring to fig. 3, a third connection joint 119 is further disposed on a circumferential wall of the first sealing ring 113, a second connection joint 117 is further disposed on a circumferential wall of the second sealing ring 115, a second connection switch 137 is disposed in the connection groove 135, and when the first flange 101 and the second flange 103 are mounted in place, the first sealing ring 113 and the second sealing ring 115 are connected through the second connection switch 137. Namely: one end of the second connecting head 117 and one end of the third connecting head 119 are detachably and hermetically connected with one end of the second connecting switch 137 respectively. The connection modes of the second connection head 117, the third connection head 119 and the second connection switch 137 are the same as the connection modes of the first connection head and the first connection switch 109.

The first sealing ring 113 and the second sealing ring 115 can be blocked into two independent sealing rings through the second connecting switch 137, so that two sealing protections are formed, when one sealing ring is unable to continue to seal, the other sealing ring can continue to seal, and the medium is prevented from leaking.

Referring to fig. 2, 4 and 5, the outer side wall of the flange plate on which the first connection switch 109 and the second connection switch 137 are mounted is provided with an insertion hole 108, the first connection switch 109 and the second connection switch 137 are both provided with a rotating head 139 and a key 141 which can be separated from and adapted to the rotating head 139, the rotating head 139 is located in the insertion hole 108, and the key 141 can be engaged with the rotating head 139 after extending into the insertion hole 108, so as to rotatably control the opening and closing of the first connection switch 109 and the second connection switch 137. The flange leakage caused by the fact that other people rotate the rotating head 139 to open the first connecting switch 109 or the second connecting switch 137 to cause the gas in the first sealing ring 113 or the second sealing ring 115 to escape from the inflating head 107 is avoided. It should be noted that the first connection switch 109 and the second connection switch 137 are conventional pipeline valves, such as ball valves. The rotating head 139 is a rotating head on the valve, and the ball valve can be rotated by rotating the rotating head 139, so as to open or close the first connection switch 109 or/and the second connection switch 137. In this embodiment, one end of the rotating head 139 is configured to have a specific shape, such as a cross shape, and one end of the key 141 connected to the rotating head 139 is configured to have a recess, such as a cross-shaped recess, adapted to the shape of the end of the rotating head 139, so that the rotating head 139 and the key 141 can be stably engaged, and a maintenance worker can open and close the first connecting switch 109 or the second connecting switch 137.

The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which all belong to the protection scope of the present application.

Claims

1. The utility model provides an aerify flange, includes first ring flange and second ring flange, and bolted connection, its characterized in that are passed through to first ring flange and second ring flange: a groove group is arranged on the inner side wall of the first flange plate or/and the second flange plate, an inflatable sealing element is arranged in the groove group, and a first connecting head is arranged on the inflatable sealing element;

2. An inflatable flange as claimed in claim 1, wherein: the groove group comprises a first groove and a second groove, a connecting groove is arranged between the first groove and the second groove, and the first groove and the second groove are communicated through the connecting groove.

3. An inflatable flange as claimed in claim 2, wherein: the inflatable sealing element is matched with the shape of the groove group; the inflatable sealing element comprises a first sealing ring and a second sealing ring, the first sealing ring is positioned in the first groove, and the second sealing ring is positioned in the second groove.

4. An inflatable flange as claimed in claim 3, wherein: the first connecting head is arranged on the peripheral wall of the first sealing ring or the peripheral wall of the second sealing ring, and a gasket is arranged on the first connecting head.

5. An inflatable flange as claimed in claim 3, wherein: a second connecting switch is arranged in the connecting groove, and the first sealing ring and the second sealing ring are connected through the second connecting switch.

6. An inflatable flange as claimed in claim 5, wherein: the peripheral wall of the first sealing ring is provided with a third connector, the peripheral wall of the second sealing ring is provided with a second connector, one ends of the second connector and the third connector are respectively detachably and hermetically connected with one end of a second connecting switch, and the first sealing ring and the second sealing ring can be separated into two independent sealing rings through the second connecting switch.

7. An inflatable flange as claimed in claim 5, wherein: the first connecting switch and the second connecting switch are both provided with a rotating head and a key which can be separated from the rotating head and is matched with the rotating head;

the outer side wall of the flange plate provided with the first connecting switch and the second connecting switch is provided with an insertion hole, the rotating head is positioned in the insertion hole, and the key is connected and matched with the rotating head to control the first connecting switch and the second connecting switch to be opened and closed.

8. An inflatable flange as claimed in claim 5, wherein: the second connector is connected with the connecting groove in a sealing mode, and when the first flange plate and the second flange plate are installed in place, the side wall of the second connector can be abutted to the inner side wall of the flange plate which is not provided with the groove group.

9. An inflatable flange as claimed in claim 1, wherein: one end of the inflation head is connected with one end of the first connecting switch, the other end of the inflation head is arranged on the peripheral wall of the first flange plate or the second flange plate, and the inflation head is externally connected with an inflation instrument and/or a pressure measuring instrument.