CN211675964U

CN211675964U - Flange gasket type nitrogen injection port

Info

Publication number: CN211675964U
Application number: CN202020061476.7U
Authority: CN
Inventors: 谢欢欢; 张小玉; 段海博; 倪秀云
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2020-10-16
Anticipated expiration: 2030-01-13

Abstract

The utility model discloses a nitrogen mouth is annotated to flange gasket formula, include: the inflation assembly comprises a steel ring, a nitrogen filling hole, a cladding pipe, a nut and a circular ring, wherein the nitrogen filling hole is formed in the outer side wall of the steel ring, the cladding pipe is welded on the outer side wall of the steel ring, the nitrogen filling hole is formed in the inner side of the cladding pipe, a fixing pipe is communicated with one side, away from the steel ring, of the cladding pipe, an external thread is arranged on the outer side wall, away from the cladding pipe, of the fixing pipe, the fixing pipe is connected with the nut through the external thread in a threaded manner, and the circular ring is communicated with one side, away from the cladding pipe, of; installing flange gasket formula nitrogen injection mouth, only need loosen shell type blowoff valve or throttle and stop the bleed valve downstream side flange, take out after the seal gasket install this device's steel ring between the flange, do the bolt-up a little can, the effectual work load that has reduced dismantlement and installation has practiced thrift manpower data, simultaneously, the device simple structure has saved the use of material, has saved construction cost.

Description

Flange gasket type nitrogen injection port

Technical Field

The utility model relates to a fire operation nitrogen gas replacement technical field specifically is nitrogen mouth is annotated to flange gasket formula.

Background

The sparking operation refers to welding and cutting operations in a forbidden fire area and temporary operations which may generate flame, spark and red hot surfaces in flammable and explosive places using torches, electric drills, grinding wheels and the like. Before the pipeline is subjected to fire operation, nitrogen replacement is generally required to be carried out on the pipeline, the safety is improved, generally, a ball valve, a sleeve type blow-down valve or a throttling stop blow-down valve is generally arranged between a blow-down pipeline and a process main pipeline, the sleeve type blow-down valve or the throttling stop blow-down valve is required to be detached for realizing nitrogen replacement of the blow-down pipeline, a flange blind plate is additionally arranged at an upstream end flange for plugging, and a nitrogen injection blind plate is arranged at a downstream end flange for realizing the nitrogen injection function.

At present, the nitrogen blind plate dismouting work load is big for general flange notes, and the dismantlement degree of difficulty is big, has prolonged the whole time of operation of starting a fire, and general flange notes nitrogen blind plate structure is comparatively complicated, and the material uses more, for this reason, proposes flange gasket formula and annotates nitrogen mouth.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a nitrogen mouth is annotated to flange gasket formula to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: flange gasket formula notes nitrogen mouth includes:

the inflation assembly comprises a steel ring, a nitrogen filling hole, a coating pipe, a fixing pipe, an external thread, a nut and a circular ring, wherein the nitrogen filling hole is formed in the outer side wall of the steel ring, the coating pipe is welded on the outer side wall of the steel ring, the nitrogen filling hole is positioned on the inner side of the coating pipe, one side, away from the steel ring, of the coating pipe is communicated with the fixing pipe, the external thread is arranged on the outer side wall, away from the coating pipe, of the fixing pipe, the nut is connected with the fixing pipe through the external thread in a threaded manner, one side, away from the coating pipe, of the nut is communicated with the circular ring, and one side, away from the;

the longitudinal connecting assembly comprises a first hose, a first inflation tube, a first limiting ring, a first bolt, a first circular ring elastic sheet and a longitudinal valve;

the transverse connecting assembly comprises a second hose, a second inflation tube, a second limiting ring, a second bolt, a second circular ring elastic sheet, a transverse valve and a connecting tube; the outer side wall of the first inflation pipe is welded with a first limiting ring, the outer side walls of the first inflation pipe and the first limiting ring are respectively sleeved with a first hose, the outer side wall of the first hose is sleeved with a first bolt, the outer side wall of the first bolt is fixedly connected with a first circular ring elastic sheet, and the longitudinal valve is installed at one end of the three-way pipe; a second limiting ring is welded on the outer side wall of the second inflation tube, a second hose is sleeved on the outer side walls of the second inflation tube and the second limiting ring, a second bolt is sleeved on the outer side wall of the second hose, a second circular elastic sheet is fixedly connected to the outer side wall of the second bolt, one end of the second inflation tube is communicated with a connecting tube, and a transverse valve is installed at one end, away from the second inflation tube, of the connecting tube; the first inflation pipe is communicated with one end of the three-way pipe; the connecting pipe is communicated with one end of the three-way pipe; the number of the nitrogen charging holes is not less than two, and the number of the nitrogen charging holes is not more than five.

Compared with the prior art, the beneficial effects of the utility model are that: installing flange gasket formula nitrogen injection mouth, only need loosen shell type blowoff valve or throttle and stop the bleed valve downstream side flange, take out after the seal gasket install this device's steel ring between the flange, do the bolt-up a little can, the effectual work load that has reduced dismantlement and installation has practiced thrift manpower data, simultaneously, the device simple structure has saved the use of material, has saved construction cost.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the steel ring of the present invention;

fig. 3 is a schematic side view of the steel ring of the present invention.

In the figure: 10. an inflation assembly; 11. a steel ring; 12. filling nitrogen holes; 13. a cladding tube; 14. a fixed tube; 15. an external thread; 16. a nut; 17. a circular ring; 18. a three-way pipe; 20. a longitudinal connecting assembly; 21. A first hose; 22. a first gas-filled tube; 23. a first limit ring; 24. a first bolt; 25. a first circular ring spring; 26. a longitudinal valve; 30. a transverse connection assembly; 31. a second hose; 32. a second gas-filled tube; 33. a second stop collar; 34. a second bolt; 35. a second circular ring spring; 36. a transverse valve; 37. and (7) connecting pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides a technical solution: flange gasket formula notes nitrogen mouth includes:

the inflation assembly 10 comprises a steel ring 11, a nitrogen filling hole 12, a cladding pipe 13, a fixing pipe 14, an external thread 15, a nut 16 and a circular ring 17, wherein the nitrogen filling hole 12 is formed in the outer side wall of the steel ring 11, the cladding pipe 13 is welded on the outer side wall of the steel ring 11, the nitrogen filling hole 12 is located in the inner side of the cladding pipe 13, the fixing pipe 14 is communicated with one side, away from the steel ring 11, of the cladding pipe 13, the external thread 15 is arranged on the outer side wall, away from the cladding pipe 13, of the fixing pipe 14, the nut 16 is in threaded connection with the external thread 15, the circular ring 17 is communicated with one side, away from the nut 16, of the circular ring 17, and the three-;

the longitudinal connecting assembly 20 comprises a first hose 21, a first inflation tube 22, a first limiting ring 23, a first bolt 24, a first circular ring elastic sheet 25 and a longitudinal valve 26;

the transverse connecting assembly 30 comprises a second hose 31, a second inflation tube 32, a second limiting ring 33, a second bolt 34, a second circular spring piece 35, a transverse valve 36 and a connecting tube 37; the outer side wall of the first inflation tube 22 is welded with a first limiting ring 23, the outer side walls of the first inflation tube 22 and the first limiting ring 23 are both sleeved with a first hose 21, the outer side wall of the first hose 21 is sleeved with a first bolt 24, the outer side wall of the first bolt 24 is fixedly connected with a first circular ring elastic sheet 25, a longitudinal valve 26 is installed at one end of the three-way pipe 18, and a nitrogen gas bottle can fill nitrogen gas into the nitrogen filling hole 12 in the steel ring 11 through the first hose 21; a second limiting ring 33 is welded on the outer side wall of the second inflation tube 32, a second hose 31 is sleeved on the outer side walls of the second inflation tube 32 and the second limiting ring 33, a second bolt 34 is sleeved on the outer side wall of the second hose 31, a second circular elastic sheet 35 is fixedly connected on the outer side wall of the second bolt 34, one end of the second inflation tube 32 is communicated with a connecting tube 37, a transverse valve 36 is installed at one end, away from the second inflation tube 32, of the connecting tube 37, and a nitrogen gas bottle can charge nitrogen gas into the steel ring 11 through the second hose 31; the first inflation tube 22 is communicated with one end of the three-way tube 18, and the longitudinal valve 26 can control the circulation and the stop of nitrogen inside the first inflation tube 22; the connecting pipe 37 is communicated with one end of the three-way pipe 18, and the transverse valve 36 can control the circulation and the stop of nitrogen inside the connecting pipe 37; the number of the nitrogen filling holes 12 is not less than two, the number of the nitrogen filling holes 12 is not more than five, the diameter of each nitrogen filling hole 12 is 3mm, and the thickness of the steel ring 11 can be reduced by the nitrogen filling holes 12 with smaller diameters; the clad pipe 13 and the fixed pipe 14 are made of a galvanized steel pipe of DN25, the steel ring 11 is made of a 5mm steel plate through cutting, the texture of the steel plate is not too hard, the thickness is not too large, the surface of the steel ring 11 is smooth and is not bent, so that the tightness after fastening can be ensured, the outer diameter of the steel ring 11 is 110mm-120mm, the width of the steel ring 11 is 20mm-30mm, the outer diameter and the width of the steel ring 11 are determined to ensure that the steel ring 11 can be smoothly inserted between two flanges and combined with convex surfaces (sealing surfaces) of the two flanges, and fastening and air tightness are realized.

According to the working principle or the structural principle, when the device is used, a ball valve on a vent pipeline is closed, a throttling stop valve is opened, gas in a pipe section between the vent ball valve and the throttling stop valve is exhausted, the throttling stop valve is closed, a flange bolt at the downstream of the throttling stop valve is loosened, an original sealing gasket is taken out, a flange gasket type nitrogen injection port steel ring 11 is inserted between flanges, the matching of the steel ring 11 and a flange sealing surface is checked, the flange bolt is fastened, a first hose 21 and a second hose 31 are communicated with a nitrogen gas bottle, the nitrogen gas is respectively filled into a fixed pipe 14 through a first inflating pipe 22 and a connecting pipe 37, then the pipeline is filled through a cladding pipe 13 and a nitrogen filling hole 12, the filling speed of the nitrogen gas is controlled through a longitudinal valve 26 and a transverse valve 36, after nitrogen gas replacement is completed, the flange bolt is loosened, the steel ring 11 is taken out, a new.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Nitrogen mouth is annotated to flange gasket formula, its characterized in that includes:

an inflation assembly (10), wherein the inflation assembly (10) comprises a steel ring (11), a nitrogen filling hole (12), a cladding pipe (13), a fixing pipe (14), an external thread (15), a nut (16) and a circular ring (17), the outer side wall of the steel ring (11) is provided with a nitrogen filling hole (12), the outer side wall of the steel ring (11) is welded with a cladding pipe (13), the nitrogen filling hole (12) is positioned at the inner side of the cladding pipe (13), one side of the cladding pipe (13) far away from the steel ring (11) is communicated with a fixed pipe (14), the outer side wall of the fixed pipe (14) far away from the cladding pipe (13) is provided with an external thread (15), the fixed pipe (14) is connected with a nut (16) through an external thread (15) in a threaded manner, a circular ring (17) is communicated with one side of the nut (16) far away from the cladding pipe (13), one side of the circular ring (17) far away from the nut (16) is communicated with a three-way pipe (18);

the connecting device comprises a longitudinal connecting assembly (20), wherein the longitudinal connecting assembly (20) comprises a first hose (21), a first inflation pipe (22), a first limiting ring (23), a first bolt (24), a first circular ring elastic sheet (25) and a longitudinal valve (26);

the transverse connecting assembly (30) comprises a second hose (31), a second inflation tube (32), a second limiting ring (33), a second bolt (34), a second circular ring elastic sheet (35), a transverse valve (36) and a connecting tube (37); a first limiting ring (23) is welded on the outer side wall of the first inflation tube (22), first hoses (21) are sleeved on the outer side walls of the first inflation tube (22) and the first limiting ring (23), first bolts (24) are sleeved on the outer side walls of the first hoses (21), first circular ring elastic pieces (25) are fixedly connected to the outer side walls of the first bolts (24), and the longitudinal valve (26) is installed at one end of the three-way pipe (18); a second limiting ring (33) is welded on the outer side wall of the second inflation tube (32), a second hose (31) is sleeved on the outer side walls of the second inflation tube (32) and the second limiting ring (33), a second bolt (34) is sleeved on the outer side wall of the second hose (31), a second circular ring elastic sheet (35) is fixedly connected to the outer side wall of the second bolt (34), a connecting tube (37) is communicated with one end of the second inflation tube (32), and a transverse valve (36) is installed at one end, far away from the second inflation tube (32), of the connecting tube (37); the first inflation pipe (22) is communicated with one end of the three-way pipe (18); the connecting pipe (37) is communicated with one end of the three-way pipe (18); the number of the nitrogen charging holes (12) is not less than two, and the number of the nitrogen charging holes (12) is not more than five.