CN219573392U - A gas tightness monitoring device for natural gas pipelines - Google Patents

Abstract

The application provides an airtightness monitoring device for natural gas pipelines, which relates to the technical field of natural gas pipeline airtightness detection, and includes flanges at the joints of two natural gas pipelines. There is a detection component; the sealing part includes an upper arc part and a lower arc part, and the other end of the upper arc part and the lower arc part is connected with a fastening part, and the middle part of the upper arc part and the lower arc part is provided with a ventilation groove; the detection component includes a vent box, The air release plate and the air storage tank, the air release plate is provided with air holes, and the air holes are located outside the air intake end of the air release box. When the flange connection is aging and air leakage occurs, the gas will flow from the connection between the upper arc and the air release box. Discharge into the place, lift the pressure relief plate, and discharge it into the gas storage tank through the vent hole. When the gas leaks, you can clearly see the leaked gas jacking up the vent plate through the observation window, and find the pipeline in time. Air leakage, and can quickly deal with the air leakage situation, ensuring the living safety of residents.

Description

A gas tightness monitoring device for natural gas pipelines

technical field

The present application relates to the technical field of gas tightness detection of natural gas pipelines, in particular to a gas tightness monitoring device for natural gas pipelines.

Background technique

Natural gas is usually a flammable and explosive gas, and it is transmitted over long distances through sealed pipelines. The sealed pipelines are mainly composed of steel pipe welding and pipe joint sealing connections.

At present, the sealing of natural gas pipeline pipe joints in residential areas is usually connected by flanges, and rubber sealing rings are provided on the abutting surfaces of the flanges. Long-term use will cause the internal rubber to age, resulting in poor airtightness. Well, there are phenomena such as air leakage, so the staff will regularly check the air tightness through the detector. However, when there is air leakage at the connection, it cannot be found in time for maintenance, and it cannot be monitored for a long time, which poses a serious safety hazard.

Contents of the invention

The purpose of the embodiments of the present application is to provide an airtightness monitoring device for a natural gas transmission pipeline, which can solve the technical problem of airtightness monitoring for a natural gas transmission pipeline.

An embodiment of the present application provides an air tightness monitoring device for a natural gas pipeline, which includes a flange at the junction of two natural gas pipes, a sealing member is set on the flange, and a detection component is provided on the sealing member;

The seal includes an upper arc and a lower arc, the upper arc and the lower arc are respectively wrapped on the flange, the upper arc is hinged to one end of the lower arc, and the upper The other end of the arc part and the lower arc part is connected with a fastening part, and the middle part of the upper arc part and the lower arc part is provided with a ventilation groove;

The detection assembly includes an air leak box, an air leak plate, and an air storage tank, the air leak box communicates with the top of the upper arc, the air leak plate abuts against the air intake end of the air leak box, and the air leak plate Ventilation holes are arranged on the top, and the ventilation holes are located outside the air intake end of the air leakage box, and the gas storage tank communicates with the exhaust end of the air leakage box.

Further, an air pressure gauge is connected to the top of the gas storage tank, and a gas solenoid valve is connected to the side wall of the gas storage tank.

Further, the side wall of the leak box is provided with a transparent observation window.

Further, both the upper arc part and the lower arc part are provided with sealing rubber sleeves, and the sealing rubber sleeves are sleeved on the outer wall of the flange.

Further, the inner wall of the upper arc part and the inner wall of the lower arc part are both provided with sealing rubber pads.

Further, the buckle includes a buckle and a fixing strip, the buckle is fixed on the side wall of the upper arc, the fixing strip is fixed on the side wall of the lower arc, and the buckle The outer wall is provided with a handle.

The beneficial effects of the utility model:

The seal provided by the utility model is equipped with a detection component on the seal. When the flange connection is aging and air leakage occurs, the gas will be discharged from the connection between the upper arc and the leak box, and the top of the pressure relief plate will When the gas leaks, you can clearly see the leaked gas jacking up the leaking plate through the observation window, find the leak in time, and quickly correct the leak The weather conditions are dealt with to ensure the living safety of residents.

The leaked gas can be temporarily collected and stored by connecting the gas storage tank with the leaked gas box, so as to avoid the gas from leaking out and affecting the air quality.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings that are required in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is the structural representation of an embodiment of the utility model;

Fig. 2 is a side view structural schematic diagram of an embodiment of the utility model;

Fig. 3 is a schematic cross-sectional structural diagram at A-A of Fig. 2 .

The reference signs are respectively:

1. Sealing part; 11. Upper arc part; 12. Lower arc part; 13. Ventilation groove; 14. Sealing rubber sleeve; 15. Sealing rubber pad; 2. Detection component; , venting plate; 221, air hole; 23, gas storage tank; 231, gas solenoid valve; 3, buckle; 31, buckle; 32, fixing bar; 33, handle; 4, barometer; 5, flange ;

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the application product is used, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the application. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of this application, it should also be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

Referring to Figures 1-3, an airtightness monitoring device for a natural gas transmission pipeline includes a flange 5 at the junction of two natural gas pipes, a sealing member is set on the flange 5, and a detection component is provided on the sealing member;

When in use, the airtightness of the flange 5 is ensured by the sealing component to prevent the leaked gas from being discharged to the outside, and the setting of the detection component can monitor the airtightness of the flange 5 in real time in real time to ensure the safety of residents.

Referring to Figures 1 and 3, the seal includes an upper arc and a lower arc. The upper arc is wrapped around the upper part of the flange 5, and the lower arc is wrapped around the lower part of the flange 5. One end of the upper arc and the lower arc are hinged. The other end of the arc piece and the lower arc piece is connected with a fastening piece, and the middle part of the upper arc piece and the lower arc piece is provided with a ventilation groove;

When in use, after wrapping the flange 5 with the upper and lower arc parts, fasten the fastening parts so that the flange 5 is completely airtightly wrapped. Exhaust to the vent slot, and from the vent slot to the vent box, to avoid the gas from being discharged into the external environment.

Referring to Figures 1 and 3, the detection assembly includes a vent box, a vent plate and an air storage tank, the vent box communicates with the top of the upper arc, the vent plate abuts against the intake end of the vent box, and the vent plate is provided with a vent hole, The air vent is located outside the air intake end of the vent box, and the gas storage tank communicates with the exhaust end of the vent box;

When in use, when the connection of flange 5 is aging and air leakage occurs, the gas will be discharged from the connection between the upper arc and the gas leakage box, and the pressure relief plate will be lifted up, and then discharged into the gas storage tank through the vent hole. When a gas leak occurs, the leaked gas can be clearly seen through the observation window, and the leak of the flange 5 can be found in time, and the leak can be dealt with quickly, ensuring the living safety of the residents .

Referring to Figure 1, the top of the gas storage tank is connected to a barometer, and the side wall of the gas storage tank is connected to a gas solenoid valve;

When in use, when the gas storage tank can temporarily store the leaked gas to avoid gas leakage, and can observe in time whether the gas storage tank has been flushed with gas through the barometer, and more accurately find the severity of the gas leakage, the electromagnetic The valve can automatically control the exhaust of the gas storage tank, avoiding the manual switch to inhale gas accidentally.

Referring to Figure 1, the side wall of the leak box is provided with a transparent observation window, which can effectively observe whether the leak plate is lifted by the leaked gas, and whether it is in a leaked state.

Referring to FIG. 3 , both the upper arc and the lower arc are provided with sealing rubber sleeves, which are sleeved on the outer wall of the flange 5 , and the airtightness of the flange 5 can be more effectively strengthened by the sealing rubber sleeves.

Referring to Figure 3, the inner wall of the upper arc and the inner wall of the lower arc are provided with sealing rubber pads, which can better ensure the airtightness of the upper arc and the lower arc and the sealing between the upper arc, the lower arc and the pipeline. tightness.

Referring to Figure 2, the fastening piece includes a buckle and a fixing strip, the buckle is fixed on the side wall of the upper arc, the buckle is inclined to the side of the fixing strip, the fixing strip is fixed on the side wall of the lower arc, and the fixing strip faces the buckle One side of the buckle is inclined, and the outer wall of the buckle is provided with a handle;

When in use, the buckle is fastened to the fixing strip, so that the upper arc part and the lower arc part are effectively fitted closely, and the handle on the buckle can facilitate the disassembly of the sealing part.

The above are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, there may be various modifications and changes in the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims (6)

1. The utility model provides a natural gas pipeline gas tightness monitoring devices, includes the flange of two natural gas pipe junctions, its characterized in that: the flange is sleeved with a sealing element, and a detection assembly is arranged on the sealing element;

the sealing piece comprises an upper arc piece and a lower arc piece, the upper arc piece and the lower arc piece are respectively wrapped on the flange, the upper arc piece is hinged with one end of the lower arc piece, the other ends of the upper arc piece and the lower arc piece are connected with a buckling piece, and ventilation grooves are formed in the middle parts of the upper arc piece and the lower arc piece;

the detection assembly comprises an air leakage box, an air leakage plate and an air storage tank, wherein the air leakage box is communicated with the top of the upper arc piece, the air leakage plate is abutted to the air inlet end of the air leakage box, air holes are formed in the air leakage plate and are positioned on the outer side of the air inlet end of the air leakage box, and the air storage tank is communicated with the air outlet end of the air leakage box.

2. The natural gas conveying pipeline air tightness monitoring device according to claim 1, wherein the top of the gas storage tank is connected with a barometer, and the side wall of the gas storage tank is communicated with a gas electromagnetic valve.

3. The natural gas transmission pipeline tightness monitoring device according to claim 1, wherein a transparent observation window is arranged on the side wall of the air leakage box.

4. The natural gas conveying pipeline air tightness monitoring device according to claim 1, wherein sealing rubber sleeves are arranged in the upper arc piece and the lower arc piece, and the sealing rubber sleeves are sleeved on the outer wall of the flange.

5. The natural gas conveying pipeline air tightness monitoring device according to claim 1, wherein sealing rubber gaskets are arranged on the inner wall of the upper arc piece and the inner wall of the lower arc piece.

6. The natural gas conveying pipeline air tightness monitoring device according to claim 1, wherein the buckling piece comprises a buckle and a fixing strip, the buckle is fixed on the side wall of the upper arc piece, the fixing strip is fixed on the side wall of the lower arc piece, and a handle is arranged on the outer wall of the buckle.