CN218178210U

CN218178210U - Sealing flange connecting piece of natural gas transportation pipeline

Info

Publication number: CN218178210U
Application number: CN202222395449.5U
Authority: CN
Inventors: 张文杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2022-12-30
Anticipated expiration: 2032-09-07

Abstract

The utility model provides a sealing flange connecting piece of natural gas transportation pipeline. The sealing flange connecting piece of natural gas transportation pipeline includes: fixed cover establishes the first fixed annular plate on first flange and fixes the second fixed annular plate of establishing on the second flange with fixed cover, and fixed mounting has the protecting tube on one side outer wall of the fixed annular plate of second, the internal fixation of protecting tube has sealed annular rubber, the one end fixed mounting of protecting tube has clamping screw, just clamping screw runs through first fixed annular plate, fixed mounting has two dead levers, two in the protecting tube slidable mounting has the sliding plate on the dead lever, the circular catch bar of top fixed mounting of sliding plate. The utility model provides a natural gas transportation pipeline's sealed flange joint spare has convenient to use, easy operation, reminds people flange joint department to appear revealing, reduce the advantage of potential safety hazard automatically.

Description

Sealing flange connecting piece of natural gas transportation pipeline

Technical Field

The utility model relates to a natural gas transportation technical field especially relates to a natural gas transportation pipeline's sealed flange connecting piece.

Background

The natural gas refers to all natural gases in nature, including gases formed in various natural processes in an atmospheric environment, a water ring and a rock ring, along with the rapid development of the society, the natural gas gradually becomes one of important energy sources of people, people generally transport the natural gas to each household through transport pipelines, and due to the fact that the transport distance of the natural gas is long, people generally connect the two transport pipelines together through a sealing flange connecting piece, and then transport the natural gas to a required area through the transport pipelines.

But current sealing flange connecting piece only has simple sealed function to sealing flange, lacks and reports to the police the warning personnel's function after appearing revealing outdoor natural gas transportation pipeline flange joint department, leads to the maintenance personal can not in time overhaul the pipeline to revealing appearing, leads to a large amount of natural gases to reveal, has certain potential safety hazard.

Therefore, there is a need to provide a new sealing flange connection for natural gas transportation pipelines to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a convenient to use, easy operation, remind people flange joint department to appear revealing, reduce the sealed flange joint spare of natural gas transportation pipeline of potential safety hazard automatically.

In order to solve the technical problem, the utility model provides a natural gas transportation pipeline's sealed flange joint spare includes: fixed cover establishes the first fixed ring plate on first flange and fixes the second fixed ring plate of establishing on the second flange with fixed cover, and fixed mounting has the protecting tube on one side outer wall of the fixed ring plate of second, fixed mounting has sealed annular rubber in the protecting tube, the one end fixed mounting of protecting tube has clamping screw, just clamping screw runs through first fixed ring plate, fixed mounting has two dead levers, two in the protecting tube sliding mounting has the sliding plate on the dead lever, the circular catch bar of top fixed mounting of sliding plate, just the top of circular catch bar extends to outside the protecting tube, fixed mounting has trapezoidal push pedal on the circular catch bar, circular catch bar with protecting tube sliding connection, fixed mounting has the installing cover on the protecting tube, fixed mounting has the micro-gap alarm on one side inner wall of installing cover, fixed mounting has micro-gap switch on one side inner wall of installing cover.

Preferably, a through hole is formed in the protection pipe, an annular rubber sealing ring is fixedly mounted in the through hole, and the circular push rod penetrates through the annular rubber sealing ring and is connected with the inner wall of the annular rubber sealing ring in a sliding and sealing mode.

Preferably, the outer wall of the mounting cover is provided with a sound transmission port, and a dust screen is fixedly mounted in the sound transmission port.

Preferably, the sliding plate is provided with two through holes, linear bearings are fixedly mounted in the two through holes respectively, and the two fixing rods respectively penetrate through the two linear bearings and are in sliding connection with the inner walls of the corresponding linear bearings.

Preferably, the mounting cover is provided with an L-shaped push plate in a sliding manner.

Preferably, the two fixing screws are respectively provided with a rotating nut in a threaded sleeve mode.

Preferably, a limiting plate is fixedly mounted at the top of the L-shaped push plate.

Compared with the prior art, the utility model provides a natural gas transportation pipeline's sealed flange joint spare has following beneficial effect:

the utility model provides a natural gas transportation pipeline's sealed flange connecting piece, with first flange and second flange fixed mounting respectively on external gas pipeline, mutually support first flange and second flange connection together through rotating nut and clamping screw, when appearing the gas between first flange and the second flange and leaking, it enters into the protective tube to leak the gas, make the increase of protective tube internal gas pressure, the sliding plate is pushed down under the effect of atmospheric pressure, circular catch bar rebound drives trapezoidal push pedal rebound and opens micro-gap switch, make the alarm send the police dispatch newspaper sound, remind people flange joint to appear the gas leakage, make people can be quick overhaul this first flange and second flange, prevent to appear a large amount of natural gas leakage, cause the potential safety hazard, through closing external gas pipeline's control valve anticlockwise rotation rotating nut, dismantle from clamping screw, separate first flange and second flange, and then make people can overhaul first flange and second flange, the process is simple quick, high work efficiency.

Drawings

Fig. 1 is a schematic structural view of a preferred embodiment of a sealing flange connection for a natural gas transportation pipeline according to the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of the portion B shown in FIG. 2;

fig. 4 is a side view of the seal ring rubber shown in fig. 1.

The reference numbers in the figures: 1. a first flange; 2. a second flange; 3. a first stationary annular plate; 4. A second stationary annular plate; 5. a protective tube; 6. sealing the annular rubber; 7. fixing the screw rod; 8. Rotating the nut; 9. a circular push rod; 10. a dust screen; 11. an annular rubber seal ring; 12. A trapezoidal push plate; 13. mounting a cover; 14. a microswitch; 15. an alarm; 16. a sliding plate; 17. a fixing rod; 18. an L-shaped push plate.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a sealing flange connector for a natural gas transportation pipeline according to a preferred embodiment of the present invention; FIG. 2 is an enlarged view of the portion A shown in FIG. 1; FIG. 3 is an enlarged view of the portion B shown in FIG. 2; fig. 4 is a side view of the seal ring rubber shown in fig. 1. The sealed flange connection spare of natural gas transportation pipeline includes: a first fixed annular plate 3 fixedly sleeved on the first flange 1 and a second fixed annular plate 4 fixedly sleeved on the second flange 2, a protective pipe 5 is fixedly installed on the outer wall of one side of the second fixed annular plate 4, the protective pipe 5 is fixedly installed on the second fixed annular plate 4 by welding, sealing annular rubber 6 is fixedly installed in the protective pipe 5, a fixed screw 7 is fixedly installed at one end of the protective pipe 5, the fixed screw 7 penetrates through the first fixed annular plate 3, in order to fixedly install the protective pipe 5 on the first fixed annular plate 3 and further connect the first flange 1 and the second flange 2 together, a rotating nut 8 is respectively sleeved on the two fixed screws 7 by screw threads, two fixed rods 17 are fixedly installed in the protective pipe 5, sliding plates 16 are slidably installed on the two fixed rods 17, and a circular push rod 9 is fixedly installed at the top of the sliding plate 16, and the top end of the round pushing rod 9 extends out of the protection pipe 5, in order to make the connection between the round pushing rod 9 and the protection pipe 5 more tight and prevent the leaked gas from entering the installation cover 13 through the gap between the round pushing rod 9 and the protection pipe 5 and causing the natural gas leakage, a through hole is arranged on the protection pipe 5, an annular rubber seal ring 11 is fixedly arranged in the through hole, the round pushing rod 9 penetrates through the annular rubber seal ring 11 and is connected with the inner wall of the annular rubber seal ring 11 in a sliding and sealing manner, a trapezoidal push plate 12 is fixedly arranged on the round pushing rod 9, the round pushing rod 9 is connected with the protection pipe 5 in a sliding manner, an installation cover 13 is fixedly arranged on the protection pipe 5, an alarm 15 is fixedly arranged on the inner wall of one side of the installation cover 13, a microswitch 14 is fixedly arranged on the inner wall of one side of the installation cover 13, when the gas leakage occurs between the first flange 1 and the second flange 2, leak in the gas enters into protective tube 5, make the increase of 5 internal gas pressures of protective tube, 16 rebound of sliding plate under the effect of atmospheric pressure, 16 rebound of sliding plate drive circular catch bar 9 rebound, circular catch bar 9 rebound drives trapezoidal push pedal 12 rebound and contacts with micro-gap switch 14, and then open micro-gap switch 14, make open micro-gap switch 14 and then make alarm 15 send the police dispatch newspaper sound, remind people's flange joint department the gas leakage to appear, make people can be quick overhaul this first flange 1 of department and second flange 2.

In order to send out alarm sound with alarm 15 and spread out installation cover 13, seted up the biography sound opening on the outer wall of installation cover 13, and fixed mounting has dust screen 10 in the biography sound opening, prevents through dust screen 10 that external dust from entering into installation cover 13 in, the adhesion influences the life of micro-gap switch 14 and alarm 15 on micro-gap switch 14 and alarm 15.

In order to reduce the friction force between the fixing rod 17 and the sliding plate 16, and further, the fixing rod 17 does not have trouble, and the service life of the fixing rod 17 is prolonged, two through holes are formed in the sliding plate 16, linear bearings are fixedly mounted in the two through holes respectively, and the two fixing rods 17 penetrate through the two linear bearings respectively and are in sliding connection with the inner walls of the corresponding linear bearings.

In order to enable people to repair the first flange 1 and the second flange 2, the L-shaped push plate 18 moves downwards to push the circular push rod 9 and the trapezoidal push plate 12 to move downwards, the trapezoidal push plate 12 moves downwards to close the micro switch 14, and the alarm 15 is closed. No longer send out the police dispatch newspaper sound, and then make people more convenient overhaul first flange 1 and second flange 2, slidable mounting has L shape push pedal 18 on the installation cover 13, in order to carry on spacingly to L shape push pedal 18, and then makes L shape push pedal 18 slidable mounting all the time on protective tube 5, and the top fixed mounting of L shape push pedal 18 has the limiting plate.

The utility model provides a natural gas transportation pipeline's sealed flange joint's theory of operation as follows: under initial condition, trapezoidal push pedal 12 is located micro-gap switch 14's below, when needs use this device, with first flange 1 and second flange 2 respectively fixed mounting on external gas pipeline, mutually support through swivel nut 8 and clamping screw 7 and fixedly mount protecting pipe 5 on first fixed ring plate 3, and then link together first flange 1 and second flange 2, when gas leakage appears between first flange 1 and second flange 2, the leakage gas enters into protecting pipe 5, make the increase of atmospheric pressure in protecting pipe 5, push sliding plate 16 rebound under the effect of atmospheric pressure, sliding plate 16 rebound drives circular catch bar 9 rebound, circular catch bar 9 rebound drives trapezoidal push pedal 12 rebound and contacts with micro-gap switch 14, and then open micro-gap switch 14, make open alarm 14 and make alarm 15 send out the police dispatch newspaper sound, remind people's flange joint to appear the gas leakage, make people can be quick overhaul this first flange 1 and second flange 2, prevent to appear a large amount of natural gas leakage, when needing to overhaul second flange 1 and second flange 2. Close external gas pipeline's control valve anticlockwise rotation and rotate nut 8, will rotate nut 8 and dismantle from clamping screw 7, separate first flange 1 and second flange 2, and then make people can overhaul first flange 1 and second flange 2, and the process is simple quick, and work efficiency is high.

the utility model provides a natural gas transportation pipeline's sealed flange connecting piece, with first flange 1 and second flange 2 respectively fixed mounting on external gas pipeline, mutually support through rotating nut 8 and clamping screw 7 and link together first flange 1 and second flange 2, when appearing the gas leakage between first flange 1 and the second flange 2, the leakage gas enters into in the protecting tube 5, make the increase of atmospheric pressure in the protecting tube 5, sliding plate 16 is pushed down under the effect of atmospheric pressure, circular catch bar 9 moves upwards and drives trapezoidal push pedal 12 rebound and open micro-gap switch 14, make alarm 15 send the alarm sound, remind people flange joint department to appear the gas leakage, make people can be quick overhaul first flange 1 and second flange 2 of this department, prevent a large amount of natural gas leakage, cause the potential safety hazard, through closing gas pipeline's control valve anticlockwise rotation nut 8, dismantle from clamping screw 7, separate first flange 1 and second flange 2, and then make people can carry out the maintenance to first flange 1 and second flange 2, the process is simple, the high efficiency of work is examined and repaired fast.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides a natural gas transportation pipeline's sealed flange connecting piece, includes that fixed cover establishes the fixed annular plate of second on the second flange with fixed cover to establish the fixed annular plate of first fixed annular plate on first flange, its characterized in that: fixed mounting has the protecting tube on one side outer wall of the fixed annular plate of second, fixed mounting has seal ring shape rubber in the protecting tube, the one end fixed mounting of protecting tube has fixing screw, just fixing screw runs through first fixed annular plate, fixed mounting has two dead levers in the protecting tube, two slidable mounting has the sliding plate on the dead lever, the circular catch bar of top fixed mounting of sliding plate, just the top of circular catch bar extends to outside the protecting tube, fixed mounting has trapezoidal push pedal on the circular catch bar, circular catch bar with protecting tube sliding connection, fixed mounting has the installation cover on the protecting tube, fixed mounting has the alarm on one side inner wall of installation cover, fixed mounting has micro-gap switch on one side inner wall of installation cover.

2. The sealing flange connecting piece for the natural gas transportation pipeline according to claim 1, wherein a through hole is formed in the protection pipe, an annular rubber sealing ring is fixedly installed in the through hole, and the circular pushing rod penetrates through the annular rubber sealing ring and is connected with the inner wall of the annular rubber sealing ring in a sliding and sealing mode.

3. The flanged sealing connection for natural gas transportation pipelines of claim 1, wherein the outer wall of the mounting cover is provided with a sound transmission port, and a dust screen is fixedly mounted in the sound transmission port.

4. The sealing flange connection piece for a natural gas transportation pipeline according to claim 3, wherein the sliding plate is provided with two through holes, linear bearings are fixedly mounted in the two through holes respectively, and the two fixing rods respectively penetrate through the two linear bearings and are slidably connected with the inner walls of the corresponding linear bearings.

5. The flanged connection for sealing of natural gas transportation pipelines of claim 1, wherein the mounting cap has an L-shaped push plate slidably mounted thereon.

6. The flanged connection for sealing of natural gas transportation pipelines according to claim 5, wherein the two fixing screws are respectively threaded with a rotating nut.

7. The sealing flange connection piece of a natural gas transportation pipeline according to claim 5, wherein a limiting plate is fixedly mounted at the top of the L-shaped push plate.