CN218468834U

CN218468834U - Safety evaluation system for in-service pressure-bearing equipment with defects

Info

Publication number: CN218468834U
Application number: CN202222953676.5U
Authority: CN
Inventors: 邓聪; 胡华胜; 傅如闻; 张瑞达
Original assignee: Guangdong Institute Of Special Equipment Inspection And Research (guangdong Special Equipment Accident Investigation Center)
Current assignee: Guangdong Institute Of Special Equipment Inspection And Research (guangdong Special Equipment Accident Investigation Center)
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-02-10
Anticipated expiration: 2032-11-07

Abstract

The application relates to a safety evaluation system for in-service pressure-bearing equipment containing defects. The application said contain defect pressure-bearing equipment safety assessment system include: the air leakage detection device comprises a first cover body, a second cover body, a first connecting lug, a second connecting lug, a first joint, a second joint, an air leakage detection assembly and a sealing cock; the first cover body and the second cover body are respectively provided with an inner cavity, and the first cover body and the second cover body are respectively buckled through sealing end faces; the first cover body is provided with the first connecting lug, and the second cover body is provided with the second connecting lug; the first joint is arranged on one side wall of the first cover body; the second joint is arranged on the other side wall of the first cover body; the gas leakage detection assembly is in threaded connection with the first joint, and the sealing cock is in threaded connection with the second joint. The application said contain defect pressure-bearing equipment safety assessment system in labour have easy to assemble and be convenient for observe the advantage.

Description

Safety evaluation system for in-service pressure-bearing equipment with defects

Technical Field

The application relates to the technical field of safety detection of pressure-bearing equipment, in particular to a safety evaluation system for pressure-bearing equipment with defects in service.

Background

When the pressure-bearing pipeline in service is used for conveying materials, the pressure-bearing pipeline can be subjected to turbulence of the materials in the pipeline and contact with air, under the long-term combined action, cavitation erosion can possibly occur, and even the pipeline generates cavitation erosion due to the problem of the type of a conveying medium in the pipeline, so that the pipeline is perforated. The perforated pressure-bearing pipeline needs to be processed in time, otherwise, danger and disaster can be caused.

There are generally two approaches to treatment. First, if the pitting corrosion is not severe and the system in which the pressure-bearing pipe is located can be shut down, the pipeline can be shut down from the delivery of the material, and then the pitting corrosion portion of the pipe is cut off and welded back after replacing the pipe of equal diameter. Secondly, if the operation of the pipeline cannot be stopped and the leakage stoppage under pressure can be carried out, the leakage point of the cavitation erosion can be clamped through the clamp, then the leakage is prevented, and the pipeline at the cavitation erosion position is replaced until the system stops operating.

For a leak point with a clamp, the potential for continued leakage generally does not occur because the seal and plug are tighter. However, there may still be a trace of leakage. If the medium normal pressure condition of pipeline transportation is gas, the gas cannot be conveniently observed by naked eyes, a professional analysis and detection instrument is needed, and the problem of inconvenient continuous observation exists; if the medium transported by the pipeline is liquid at normal pressure, the medium can be observed by naked eyes, but the medium is greatly influenced by the air temperature and the wind in the environment, and the observation is inconvenient.

SUMMERY OF THE UTILITY MODEL

Based on this, the application aims at providing a safety evaluation system for pressure-bearing equipment with defects in service, and the safety evaluation system has the advantages of convenience in continuous observation and judgment.

One aspect of the application provides a safety evaluation system for in-service pressure-bearing equipment with defects, which comprises a first cover body, a second cover body, a first connecting lug, a second connecting lug, a first joint, a second joint, a gas leakage detection assembly and a sealing cock;

the first cover body and the second cover body are respectively provided with an inner cavity, and the first cover body and the second cover body are respectively buckled through sealing end faces; the first connecting lug is arranged at the sealing end face of the first cover body, the second connecting lug is arranged at the sealing end face of the second cover body, and the first connecting lug and the second connecting lug are connected and fastened through bolts;

the first cover body and the second cover body are buckled to form an outer shell, and an inner cavity of the first cover body and an inner cavity of the second cover body form a cavity together;

the first joint is arranged on one side wall of the first cover body, and a first through hole is axially formed on the first joint and communicated with the cavity; the second joint is arranged on the other side wall of the first cover body, and a second through hole is axially formed on the second joint and is communicated with the cavity;

the gas leakage detection assembly is in threaded connection with the first joint, and the sealing cock is in threaded connection with the second joint;

the first joint and the second joint have the same outer diameter.

This application contain defect pressure-bearing equipment safety assessment system in labour, under the user state, offer corresponding round hole respectively with first lid and second lid, then with the pipeline assembly connection that is connected, through first engaging lug and second engaging lug for the shell body fastening assembly is on the pipeline. The clamp attached to the pipe is placed within the cavity such that the pipe at the clamp is not affected by the surrounding environment. When gas leaks from the clamp, the gas can be detected by the gas leakage detection assembly; when liquid leaks from the clamp, the judgment can be carried out by observing the condition in the outer shell. Furthermore, the leakage detection at the clamp is accurate, and the detection is easier to realize. Providing a seal tap for sealing one of the joints, the seal tap being connected to the second joint when the leak detection assembly is connected to the first joint; when the leak detection assembly is attached to the second fitting, the seal tap is attached to the first fitting, and the leak detection assembly can be repositioned between the first and second fittings because the first and second fittings are of equal outer diameter.

Further, the gas leakage detection assembly comprises a gas outlet pipe and a hollow sphere;

the air outlet pipe comprises a joint connecting section, a straight pipe section, an ellipsoidal expanding section and an eccentric pipe section which are connected in sequence; the interior of the straight pipe section is communicated with the cavity; the inner diameter of the straight pipe section is smaller than the outer diameter of the hollow sphere;

an ellipsoidal cavity is formed inside the ellipsoidal expansion section, and the hollow sphere is placed in the ellipsoidal cavity;

the eccentric pipe section is connected at a position deviating from the axis of the ellipsoidal cavity, and the inner diameter of the eccentric pipe section is smaller than the outer diameter of the hollow sphere.

Furthermore, the air outlet pipe is a transparent acrylic pipe; the outer wall of the hollow sphere is covered with a colored coating.

Furthermore, a graduated scale is marked in the length direction of the ellipsoidal expansion section.

Further, the first cover body and the second cover body are transparent acrylic covers respectively.

Furthermore, two opposite side surfaces of the outer shell are respectively provided with circular holes with equal diameters, and the circle centers of the circular holes are positioned on the sealing end surfaces of the first cover body and the second cover body.

Furthermore, two opposite side surfaces and the other adjacent surface of the outer shell are respectively provided with circular holes with equal diameters, and the circle centers of the circular holes are positioned on the sealing end surfaces of the first cover body and the second cover body.

Furthermore, a side surface and another adjacent surface of the outer shell are respectively provided with a circular hole with the same diameter, and the circle center of the circular hole is positioned on the sealing end surfaces of the first cover body and the second cover body.

Furthermore, a sealing ring is arranged at the round hole, and sealing rings are arranged on the sealing end faces of the first cover body and the second cover body.

Further, a plurality of the first engaging lugs and a plurality of the second engaging lugs are respectively arranged.

For a better understanding and practice, the present application is described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic perspective view of an exemplary system for evaluating the safety of a pressure bearing device containing defects according to the present application;

FIG. 2 is a schematic perspective view of another exemplary system for evaluating the safety of a pressure bearing device containing defects according to the present application;

FIG. 3 is a diagram illustrating an exemplary application of a safety evaluation system (with a circular hole) for a pressure-bearing device with defects;

FIG. 4 is another diagram illustrating another state of use of the exemplary system for evaluating the safety of pressure equipment containing defects (provided with round holes) according to the present disclosure;

FIG. 5 is a cross-sectional view of an exemplary leak detection assembly and first connector assembly of the present application;

FIG. 6 is a cross-sectional view of an exemplary seal tap of the present application in assembled configuration with a second coupling;

FIG. 7 is a schematic perspective view of an exemplary leak detection assembly of the present application;

FIG. 8 is a working schematic diagram of the safety evaluation system for an in-service pressure-bearing device with defects clamped on a straight pipe according to the embodiment of the present application;

FIG. 9 is a working schematic diagram of the safety evaluation system for an in-service pressure-bearing device with defects clamped on a three-way pipe according to the embodiment of the invention;

fig. 10 is a schematic diagram of the operation of the safety evaluation system of the exemplary in-service pressure equipment containing defects when clamped at a bend of a pipeline.

Detailed Description

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, are not to be construed as limiting the present application. In the description of the present application, "a plurality" means two or more unless otherwise specified.

Referring to fig. 1-7, an exemplary safety evaluation system for pressure-bearing equipment with defects in service of the present application includes a first cover 11, a second cover 12, a first connecting lug 21, a second connecting lug 22, a first joint 51, a second joint 52, a gas leakage detecting assembly 30, and a sealing cock 40;

the first cover body 11 and the second cover body 12 are respectively formed with an inner cavity, and the first cover body 11 and the second cover body 12 are respectively fastened through a sealing end face P; the first connecting lug 21 is arranged at the sealing end face P of the first cover body 11, the second connecting lug 22 is arranged at the sealing end face P of the second cover body 12, and the first connecting lug 21 and the second connecting lug 22 are connected and fastened through a bolt;

the first cover body 11 and the second cover body 12 are buckled to form an outer shell, and an inner cavity of the first cover body 11 and an inner cavity of the second cover body 12 jointly form a cavity;

the first joint 51 is mounted on one side wall of the first cover 11, and is axially formed with a first through hole which is communicated with the cavity; the second joint 52 is mounted on the other side wall of the first cover 11, and has a second through hole formed in the axial direction thereof, and the second through hole is communicated with the cavity;

the gas leak detection assembly 30 is threadedly coupled to the first connector 51 and the seal tap 40 is threadedly coupled to the second connector 52;

the first joint 51 and the second joint 52 have the same outer diameter.

This application in-service contain defect pressure-bearing equipment safety assessment system, under the user state, offer corresponding round hole A with first lid 11 and second lid 12 respectively, then with the pipeline assembly connection that is connected, through first engaging lug 21 and second engaging lug 22 for the shell body fastening assembly is on the pipeline. The clamp attached to the pipe is placed within the cavity such that the clamp and the pipe at the clamp are not affected by the surrounding environment. When gas leaks at the clamp, the gas will be detected by the leak detection assembly 30; when liquid leaks from the clamp, the judgment can be carried out by observing the condition in the outer shell. Furthermore, the leakage detection at the clamp is accurate, and the detection is easier to realize. A seal tap 40 is provided for sealing one of the joints, the seal tap 40 being connected to the second joint 52 when the leak detection assembly 30 is connected to the first joint 51; when the leak detection assembly 30 is attached to the second connector 52 and the seal tap 40 is attached to the first connector 51, the leak detection assembly 30 may be repositioned between the first connector 51 and the second connector 52 due to the equal outer diameters of the two connectors.

In some preferred embodiments, the gas leak detection assembly 30 includes a gas detector that is electrically connected to the controller. The gas detector is connected with the first connector 51, detects the gas components discharged from the first connector 51, transmits the detection result to the controller in the form of signals, and the controller processes the signals and sends the signals to the display in the form of data so that a user can know the signals on the display.

Further, an electronic flow meter is included, which is installed at the first connector 51 to detect the flow rate of the gas flowing out of the first connector 51. The electronic flow meter is electrically connected with the controller, and the flow is transmitted to the display in the form of data through the processing of the controller. The electronic flow meter is disposed between the first connector 51 and the connector of the gas detector, and performs flow detection and then gas component detection.

In other preferred embodiments, the leak detection assembly 30 includes an outlet tube and a hollow sphere 35;

the air outlet pipe comprises a joint connecting section 31, a straight pipe section 32, an ellipsoidal expanding section 33 and an eccentric pipe section 34 which are connected in sequence; the interior of the straight tube section 32 communicates with the cavity; the inner diameter of the straight pipe section 32 is smaller than the outer diameter of the hollow sphere 35;

an ellipsoidal cavity is formed inside the ellipsoidal expansion section 33, and the hollow sphere 35 is placed in the ellipsoidal cavity;

the eccentric pipe section 34 is connected at a position deviated from the axis of the ellipsoidal cavity, and the inner diameter of the eccentric pipe section is smaller than the outer diameter of the hollow sphere 35.

Here, the outlet pipe is connected to the first joint 51 as an example. One end of the internal channel of the straight pipe section 32 is connected with the first through hole of the first joint 51, so that the internal channel of the straight pipe section 32 is communicated with the cavity, and the gas discharged from the cavity sequentially flows through the first through hole of the first joint 51, the internal channel of the straight pipe section 32, the ellipsoidal expanding section 33 and the eccentric pipe section 34, and is finally discharged to the surrounding atmosphere from the tail end of the eccentric pipe section 34. In use, it is desirable to maintain the eccentric pipe section 34 above the straight pipe section 32, preferably in a vertical orientation. Therefore, the present application provides two placing states of the outer housing, one is that the first cover 11 and the second cover 12 are in a left-right position relationship, and the first cover 11 is on the left, and the other is that the first cover 11 and the second cover 12 are in an up-down position relationship, and the first cover 11 is on the top; so as to ensure that the air outlet pipe is vertically arranged all the time, and the two relative position relations are shown in the attached drawing.

The outer diameter of the hollow sphere 35 is larger than the inner diameter of the straight pipe section 32 and larger than the inner diameter of the eccentric pipe section 34, so that the hollow sphere 35 neither falls into the straight pipe section 32 nor is it blown out of the eccentric pipe section 34.

The hollow ball 35 may be made of plastic or wood, preferably thin-walled PP. In order to place the hollow sphere 35 into the ellipsoidal expansion section 33, the middle of the ellipsoidal expansion section 33 is cut, the hollow sphere 35 is placed, and then the cut part is bonded and fixed. Of course, the ellipsoidal expanding section 33 needs to be able to accommodate the hollow sphere 35, so the outer diameter of the hollow sphere 35 should not be too large, and at the same time, the hollow sphere 35 needs to be able to move freely inside the ellipsoidal expanding section 33.

In some preferred embodiments, the air outlet tube is a transparent acrylic tube; the outer wall of the hollow sphere 35 is covered with a colored coating. The outlet duct is transparent ya keli material, and the surface spraying of hollow spheroid 35 has paint or pigment for hollow spheroid 35 is observed more easily.

In some preferred embodiments, the length of the ellipsoidal expanding section 33 is marked with a scale. The graduated scale can be a graduated line or a stuck graduated scale. The graduated scale is used for assisting in determining the height position of the hollow sphere 35 to accurately acquire data.

In some preferred embodiments, the first cover 11 and the second cover 12 are transparent acrylic covers, respectively. The first cover 11 and the second cover 12 are made of transparent acrylic material. Further, the first cover 11 and the second cover 12 are respectively square. The transparent outer shell can be used for conveniently observing the conditions inside the outer shell, such as the condition of dripping of liquid drops.

In some preferred embodiments, as shown in fig. 8, two opposite side surfaces of the outer casing are respectively provided with circular holes a with equal diameters, and the centers of the circular holes a are located on the sealing end surfaces P of the first cover 11 and the second cover 12. This example is for the installation of a leak point in a straight pipe conduit 71.

In other preferred embodiments, as shown in fig. 9, two opposite side surfaces and another adjacent surface of the outer shell are respectively provided with circular holes a with equal diameters, and the circle centers of the circular holes a are located on the sealing end surfaces P of the first cover 11 and the second cover 12. This example is for the installation of a leak point at the tee pipe 72.

In some preferred embodiments, as shown in fig. 10, a side surface and another adjacent surface of the outer casing are respectively provided with a circular hole a with an equal diameter, and the center of the circular hole a is located at the sealing end surface P of the first cover 11 and the second cover 12. This example is for the installation of a leak point at the elbow 73 of the pipe.

In some preferred embodiments, a sealing ring 60 is disposed at the circular hole a, and sealing end faces P of the first cover 11 and the second cover 12 are provided with sealing rings. The sealing ring is arranged, so that the sealing tightness of the joint can be improved.

In some preferred embodiments, a plurality of the first engaging lugs 21 and a plurality of the second engaging lugs 22 are respectively provided.

The working principle of the safety evaluation system for the in-service pressure-bearing equipment with the defects comprises the following steps:

firstly, preparing the structure shown in fig. 1 or fig. 2, opening a circular hole a with a corresponding diameter by using a hole opener according to the outer diameter of the pipeline at the leakage point, setting the circle center on the sealing end surface P of the first cover body 11 and the second cover body 12 before opening the hole, then drawing a circle with a corresponding diameter, and then opening the circular hole a. And the circular holes A are formed, wherein a semicircle is arranged on the first cover body 11, and the other semicircle is arranged on the second cover body 12. The formed structure is shown with reference to fig. 3 or fig. 4.

As shown in fig. 8-10, corresponding circular holes a are formed according to the type of pipe to be clamped. A sealing ring 60 is then arranged around the circular hole a, so that the joint is tightly sealed.

If the material leaked out of the pipeline is gas under normal pressure, judging the size of the gas flow through the height blown up by the hollow sphere 35 and recording; and recording a group of data when the inspection is carried out every day. When the leakage amount is too large, the hollow sphere 35 is directly blown to the top of the ellipsoidal expansion section 33, and the gas is discharged from the position of the ellipsoidal expansion section 33 which is deviated from the axis, and the sphere is located at the top of the axis of the ellipsoidal expansion section 33, so that the two do not affect each other, and at this time, the gas leakage amount is large, and the gas leakage is not blocked by the hollow sphere 35, thereby ensuring that the gas leakage can be discharged from the eccentric pipe section 34.

If the material that the pipeline leaked is liquid under the ordinary pressure, then the liquid that leaks is wrapped up by the shell body, can not influenced by wind or other factors of surrounding environment for the liquid drop can be accurate observed. Since the outer shell is transparent, the leakage degree can be judged by reading the number of liquid drops in a specified time.

In addition, if the gas leakage detecting assembly 30 is a gas detector, the data can be directly read and the situation can be known on the display screen through a digital form.

And recording the leakage condition when the inspection is carried out every day, no matter whether the leakage exists or not. If no leakage exists in the process of multi-day detection, the safety evaluation system of the in-service pressure-bearing equipment with the defects can be dismantled; if the data detected and recorded for multiple days is not changed, whether the clamp of the leakage point needs to be replaced or reinforced is judged according to the leakage condition. If the detection record results of multiple days continuously rise, further processing of the leakage points needs to be carried out in time.

The application can realize convenient and fast detection of leakage points of gas or liquid materials, and the detection result is straight and convenient. And the disassembly of the safety evaluation system of the bearing equipment with defects in service is also very convenient, and the safety evaluation system can be used as a temporary detection tool. Because power supply and electronic devices are not needed, the device can be assembled and detected at any time and can also be disassembled at any time, and the detection is easy to realize. If the material of transporting in the pipeline is colorless tasteless, contain defect pressure-bearing equipment safety evaluation system through the labour of this application for the leak testing of this material becomes concrete and can observe.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is specific and detailed, but not construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application.

Claims

1. The utility model provides an in-service contains defect pressure-bearing equipment safety assessment system which characterized in that: the air leakage detection device comprises a first cover body, a second cover body, a first connecting lug, a second connecting lug, a first joint, a second joint, an air leakage detection assembly and a sealing cock;

the first joint is arranged on one side wall of the first cover body, and a first through hole is axially formed on the first joint and is communicated with the cavity; the second joint is arranged on the other side wall of the first cover body, and a second through hole is axially formed on the second joint and is communicated with the cavity;

the first joint and the second joint have the same outer diameter.

2. The in-service defect-containing pressure-bearing equipment safety evaluation system of claim 1, characterized in that: the gas leakage detection component comprises a gas outlet pipe and a hollow sphere;

3. The in-service defect-containing pressure-bearing equipment safety evaluation system of claim 2, wherein: the air outlet pipe is a transparent acrylic pipe; the outer wall of the hollow sphere is covered with a colored coating.

4. The in-service defect-containing pressure-bearing equipment safety evaluation system of claim 2, wherein: and a graduated scale is marked in the length direction of the ellipsoidal expansion section.

5. The in-service defect-containing pressure-bearing equipment safety evaluation system of claim 4, characterized in that: the first cover body and the second cover body are transparent acrylic covers respectively.

6. The in-service defect-containing pressure-bearing equipment safety evaluation system of claim 1, characterized in that: two opposite side surfaces of the outer shell are respectively provided with circular holes with equal diameters, and the circle centers of the circular holes are positioned on the sealing end surfaces of the first cover body and the second cover body.

7. The in-service defect-containing pressure-bearing equipment safety evaluation system of claim 1, characterized in that: two opposite side surfaces and the other adjacent surface of the outer shell are respectively provided with circular holes with equal diameters, and the circle centers of the circular holes are positioned on the sealing end surfaces of the first cover body and the second cover body.

8. The in-service defect-containing pressure-bearing equipment safety evaluation system of claim 1, characterized in that: and one side surface and the other adjacent surface of the outer shell are respectively provided with a circular hole with the same diameter, and the circle center of the circular hole is positioned on the sealing end surfaces of the first cover body and the second cover body.

9. The in-service defect-containing pressure-bearing equipment safety evaluation system according to any one of claims 6 to 8, wherein: the round hole is provided with a sealing ring, and the sealing end faces of the first cover body and the second cover body are provided with sealing rings.

10. The in-service defect-containing pressure-bearing equipment safety evaluation system of claim 1, characterized in that: a plurality of the first connection lugs and a plurality of the second connection lugs are respectively arranged.