CN215928736U

CN215928736U - High-pressure gas circuit connecting flange

Info

Publication number: CN215928736U
Application number: CN202121367759.5U
Authority: CN
Inventors: 张屹; 唐志刚; 游凯; 许有豹; 唐行辉; 马海明
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-03-01
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses a high-pressure gas circuit connecting flange, which belongs to the technical field of flanges, wherein a sealing surface of the flange is provided with a gas guide groove, a sounding cavity is arranged in the flange and is communicated with a gas inlet of the sounding cavity, the sounding cavity is provided with a gas outlet at the outer ring end surface of the flange, the sounding cavity sends out whistle sound when high-pressure gas flow passes through, when a rubber ring gasket fails or a gap is formed between the rubber ring gasket and the sealing surface of the flange due to external force damage, leaked gas is guided to the sounding cavity through the gas guide groove, the structure of the sounding cavity can expand the vibration of the gas flow in the cavity flowing process and send out warning sound which can be obviously distinguished from environmental sound, thereby avoiding the risk of accidents caused by incapability of finding in time when the gas or high-temperature tail gas is seriously leaked, and being capable of helping maintenance personnel to accurately position a gas leakage part to quickly solve the problems when the faults are treated, the workload and the difficulty of the leakage detection work are reduced.

Description

High-pressure gas circuit connecting flange

Technical Field

The utility model belongs to the technical field of flanges, and particularly relates to a high-pressure gas circuit connecting flange.

Background

The leakage detection modes of the high-pressure gas circuit of the engine which is most commonly used in the current laboratory and the market mainly comprise the following two modes: one method is to carry out pressure leak detection, and the method needs to firstly stop the engine and then seal the head end and the tail end of a pipeline to be detected by using a special tool so as to form a sealed cavity, then introduce high-pressure gas into the sealed cavity through a special pressure hole, and then match a foam leak detector for leak detection. The method mainly has the following defects: (1) the high-temperature pipeline cannot be directly inspected, otherwise, the leakage detecting agent is too seriously evaporated to effectively form bubbles; (2) special tools are needed, so that the leakage detection working cost is increased; (3) after the engine is assembled to the whole vehicle, a leak-checking and pressing tool is difficult to install basically, and the working difficulty is high; (4) the problem discovery lacks timeliness, is inconvenient for timely problem discovery and treatment, and is easy to cause greater economic loss. The second way is the hand touch, and the specific operation of the way is that when the engine is started and runs in a positive pressure difference which can enable the pipeline pressure to form a larger pressure difference to the external environment, the air leakage part is sensed through the hand touch at a short distance. The method mainly has the following defects: (1) the operator needs to have certain working experience; (2) during the inspection process, the engine can run in a higher load state, and both a rotating part and a high-temperature component in the engine run at the risk of accidental injury to operators; (3) part of the pipeline is blocked by complex parts and cannot be checked by the method; (4) the problem discovery lacks timeliness, is inconvenient for timely problem discovery and treatment, and is easy to cause greater economic loss.

Therefore, a high-pressure gas circuit connecting flange capable of monitoring in real time and finding a gas leakage fault of a connecting end surface of a high-pressure gas circuit in time is needed, and major accidents caused by the fact that gas or high-temperature tail gas cannot be found in time when the gas or the high-temperature tail gas is seriously leaked are avoided.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the high-pressure gas circuit connecting flange can monitor in real time and accurately position a gas leakage end face, and is simple in structure, low in cost and high in reliability.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

a high-pressure gas circuit connecting flange is characterized in that a sealing surface of the flange is provided with a gas guide groove, a sounding cavity is arranged in the flange and is communicated with a gas inlet of the sounding cavity, a gas outlet is formed in the outer ring end face of the flange of the sounding cavity, and the sounding cavity sends out whistle when high-pressure gas flows through the sounding cavity.

Further, the gas outlet is provided with a dustproof plug.

Furthermore, the cross-sectional area of the middle part of the sounding cavity is larger than the cross-sectional areas of the air inlet and the air outlet.

Furthermore, the air guide grooves are uniformly distributed on the same circumference of the sealing surface, and each air guide groove is communicated with one sound-generating cavity.

Further, the structures of the sound-emitting cavities are different.

Furthermore, the sounding cavities with the same structure are a group, and the flange is provided with a plurality of groups of sounding cavities with different structures.

Furthermore, the multiple groups of sound-producing cavities are arranged on the flange in a staggered mode.

Furthermore, the flange is provided with a plurality of bolt holes, and is a plurality of the bolt hole sets up with a plurality of the air guide groove is crisscross.

After the technical scheme is adopted, the utility model has the beneficial effects that:

because the sealing surface of the high-pressure gas circuit connecting flange is provided with the gas guide groove, the flange is internally provided with the sound-producing cavity, the gas guide groove is communicated with the gas inlet of the sound-producing cavity, the sound-producing cavity is provided with the gas outlet on the outer ring end surface of the flange, the sound-producing cavity produces whistle sound when high-pressure gas flows through the sound-producing cavity, when a gap is formed between the rubber ring gasket and the sealing surface of the flange due to failure of the rubber ring gasket or damage of external force, leaked gas is drained to the sound-producing cavity through the gas guide groove, the structure of the sound-producing cavity can expand the vibration of the gas flow in the flowing process of the cavity and produce warning sound which can be obviously distinguished from environmental sound, thereby avoiding the risk of accidents caused by incapability of timely finding out when the gas or the sound-producing serious leakage of high-temperature tail gas, helping maintenance personnel to accurately position the gas leakage part to quickly solve the problems when handling the faults, reducing the workload and difficulty of leakage finding out work, and also enabling customers to find out the engine abnormity in time and avoid causing serious accidents and serious accidents in the using the engines Economic loss, the flange is designed by a pure mechanical structure, the cost is low, the reliability is high, the technical advantage is obvious, and the market prospect is wide.

Drawings

FIG. 1 is a schematic perspective view of a high-pressure gas circuit connection flange according to the present invention;

FIG. 2 is a front view of the high pressure gas circuit connection flange of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic view of the back of the high pressure gas path connection flange of the present invention;

in the figure, 1-sealing surface, 2-air guide groove, 3-sound cavity, 4-air inlet, 5-air outlet, 6-outer ring end surface and 7-bolt hole.

Detailed Description

The utility model is further illustrated with reference to the following figures and examples.

All directions referred to in the present specification are based on the drawings, and represent relative positional relationships only, and do not represent absolute positional relationships.

As shown in fig. 1, 2 and 3, the high-pressure gas circuit connecting flange is characterized in that a sealing surface 1 of the flange is provided with a gas guide groove 2, a sounding cavity 3 is arranged in the flange, the gas guide groove 2 is communicated with a gas inlet 4 of the sounding cavity 3, the sounding cavity 3 is provided with a gas outlet 5 on an outer ring end surface 6 of the flange, and the sounding cavity 3 makes a whistle when high-pressure gas flows through. When the sealing surface 1 of the high-pressure gas pipeline of the engine has gas leakage fault due to failure of a rubber gasket or external force damage, the leaked high-pressure gas can preferentially flow into the sound-generating cavity 3 under the action of the gas guide groove 2, and at the moment, the sound-generating cavity 3 can send out a sharp whistle sound alarm which can be obviously distinguished from noise generated when the engine normally operates under the action of airflow, so that the gas leakage condition of the connecting end surface is monitored in real time, and the fault part can be timely positioned.

As shown in fig. 3, the air outlet 5 is provided with a dust plug (not shown in the figure), which can prevent foreign objects from entering the sounding cavity 3 when no fault occurs, and the high-pressure air flow can discharge the dust plug when the fault occurs, so that the sound of a few whistles is not affected. The cross-sectional area of the middle part of the sound-generating cavity 3 is larger than the cross-sectional areas of the air inlet 4 and the air outlet 5, and the structure has a diffusion function.

As shown in fig. 1 and 2, the air guide grooves 2 are provided in plurality and uniformly distributed on the same circumference of the sealing surface 1, and each air guide groove 2 is communicated with a sound cavity 3. Wherein the sound-emitting chambers 3 have different structures. The sounding cavities 3 with the same structure can be set as a group, the flange is provided with a plurality of groups of sounding cavities 3 with different structures, and the plurality of groups of sounding cavities 3 are arranged on the flange in a staggered mode. Can design corresponding different atmospheric pressure, for example, the chamber of making a sound 3 sets up 2 groups, every group 3 or sets up 3 groups, every 2 of group, can make monitoring range enlarge to can send gas circuit gas leakage malfunction alerting at the very first time, thereby the trouble can be solved by the containment before leading to the fact bigger loss yet.

As shown in fig. 1, 2, 3 and 4, the flange is provided with a plurality of bolt holes 7 for mounting bolts. Wherein, a plurality of bolt holes 7 and a plurality of air guide grooves 2 are arranged in a staggered manner.

According to the high-pressure gas circuit connecting flange, the gas guide groove and the sounding cavity are arranged, the sounding cavity is provided with the gas outlet at the outer ring end face of the flange, when a sealing face has a gas leakage fault, leaked high-pressure gas can flow into the sounding cavity under the action of the gas guide groove, and the sounding cavity can give out a sharp whistle sound alarm which can obviously distinguish noise generated when an engine normally operates under the action of airflow, so that the gas leakage condition of the connecting end face is monitored in real time, and the fault part can be positioned in time.

While specific embodiments of the utility model have been described above, it will be understood by those skilled in the art that the described embodiments are only some, and not all, of the present invention, which is presented by way of example only, and the scope of the utility model is defined by the appended claims. Various changes or modifications to these embodiments may be made by those skilled in the art without departing from the principle and spirit of the utility model, and these changes and modifications all fall within the scope of the utility model.

Claims

1. The high-pressure gas circuit connecting flange is characterized in that a sealing surface of the flange is provided with a gas guide groove, a sounding cavity is arranged in the flange and is communicated with a gas inlet of the sounding cavity, a gas outlet is formed in the outer ring end face of the flange of the sounding cavity, and the sounding cavity sends out whistle when high-pressure gas flows through the sounding cavity.

2. The high-pressure gas circuit connecting flange according to claim 1, wherein the gas outlet is provided with a dust plug.

3. The high-pressure gas circuit connecting flange according to claim 1, wherein the cross-sectional area of the middle portion of the sound-generating chamber is larger than the cross-sectional areas of the gas inlet and the gas outlet.

4. The high-pressure gas circuit connecting flange as claimed in claim 1, wherein the plurality of gas guiding grooves are uniformly distributed on the same circumference of the sealing surface, and each gas guiding groove is communicated with one sound-generating cavity.

5. The high-pressure gas circuit connecting flange according to claim 4, wherein the structure of each sound-emitting chamber is different.

6. The high-pressure gas circuit connecting flange as claimed in claim 4, wherein the sound-generating cavities with the same structure are in one group, and the flange is provided with a plurality of groups of sound-generating cavities with different structures.

7. The high-pressure gas circuit connecting flange according to claim 6, wherein a plurality of sets of the sound-generating cavities are staggered on the flange.

8. The high-pressure gas circuit connecting flange according to any one of claims 4 to 7, wherein the flange is provided with a plurality of bolt holes, and the plurality of bolt holes are staggered with the plurality of gas guide grooves.