CN217032910U

CN217032910U - Elbow flange gas leakage inspection device

Info

Publication number: CN217032910U
Application number: CN202220918950.2U
Authority: CN
Inventors: 刘大江; 张海民; 田艳红; 赵治鑫; 杨竟嵘; 倪树军
Original assignee: Qinhuangdao Jiameng Precision Technology Co ltd
Current assignee: Qinhuangdao Jiameng Precision Technology Co ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-07-22
Anticipated expiration: 2032-04-20

Abstract

The utility model aims to solve the problem that the operation is complex and the air leakage is easy to occur at the joint of a workpiece and the elbow flange when the air leakage condition of the elbow flange is checked in the prior art, and provides an air leakage checking device for the elbow flange, which comprises a liquid pool, a fixing device consisting of a locking cylinder and a gland, a resetting device consisting of a resetting rod and a resetting driving device, a supporting device consisting of a platform and a hoisting frame, a lifting device for enabling the platform to sink into or float out of the water surface, wherein the output end of the lifting device is connected with the platform, the main body end of the lifting device is connected with the hoisting frame, and the main body of the lifting device is fixed above the pool through the hoisting frame.

Description

Elbow flange gas leakage inspection device

Technical Field

The utility model relates to the technical field of detection devices, in particular to a detection device for detecting the air leakage condition of an elbow flange.

Background

When the air-tight piece is detected, two methods are mainly used at present, one is a method for measuring air leakage by introducing gas, an inflating device and an air leakage amount measuring device are needed, the method is suitable for detecting the workpiece which can be sealed, and when the workpiece is inconvenient to seal, the air leakage detection cannot be carried out on the workpiece; another method is to seal the workpiece with a sealing member, the sealing member and the workpiece together forming a sealed chamber, and the workpiece and the sealing member together are placed in water and inflated into the sealed chamber, indicating air leakage if bubbles are generated and indicating air leakage if no bubbles are generated. However, when the workpiece to be tested for leakage has a plurality of openings, and the openings are large and are not easily sealed by the sealing member, the leakage condition cannot be detected. For example, when performing leak inspection on workpieces such as elbow flanges, as shown in fig. 1, the leak inspection device includes an elbow pipe and a flange plate, one end of the elbow pipe is fixedly connected with the flange plate into a whole, a connecting hole for connection is formed in the flange plate, and when inspecting the leak condition, the connecting hole, the opening end of the elbow pipe and the opening end of the flange plate need to be sealed, so that the two workpieces need to be oppositely combined together, the connecting hole and the opening of one elbow pipe are blocked by a plunger, and an opening of the other elbow pipe is connected with an inflating device to inflate the two flange elbows.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an elbow flange air leakage detection device aiming at the problems that in the prior art, when the air leakage condition of an elbow flange is detected, the operation is complex and air leakage is easy to occur at the joint of a workpiece and the workpiece.

The technical purpose of the utility model is realized by the following technical scheme:

an elbow flange gas leakage inspection device comprises a liquid tank, liquid is arranged in the tank body, a fixing device consisting of a locking cylinder and a gland, a resetting device consisting of a resetting rod and a resetting driving device, a supporting device consisting of a platform and a hoisting frame, a lifting device enabling the platform to sink into or float out of the water surface, an output end of the lifting device is connected with the platform, a main body end is connected with the hoisting frame, a main body of the lifting device is fixed above the tank body through the hoisting frame, a station of the platform provides a sealing surface for being in sealing connection with the connecting surface of a flange plate, the lifting device drives the platform to lift towards or away from the tank body to immerse into or float out of the liquid, the resetting driving device is fixedly arranged on the platform, the resetting rod is connected with the output end of the resetting driving device, a sealing connector is arranged at the free end of the resetting rod and is used for being in sealing communication with the free end of a flange elbow, the reset rod is provided with a blind hole along the central line direction of the reset rod, the surface of the reset rod is provided with an inflation hole communicated with the blind hole, the reset rod is hermetically communicated with an inflation device through the inflation hole, the reset driving device is used for driving the reset rod to reciprocate towards or away from the free end of the flange elbow and enabling the flange elbow to be hermetically connected with the reset rod through an inflation sealing head, a cylinder rod of the locking cylinder is fixedly connected with the gland, the locking cylinder drives the gland to be far away from or close to the platform and to be capable of pressing on the edge of the flange plate and fixing the gland when being close to the platform, and the gland is loosened when being far away from the platform;

the locking cylinder is fixedly arranged below the platform, and a cylinder rod penetrates through the platform to extend to the upper part of the platform and is fixedly connected with the gland;

the air channel of each locking cylinder is controlled by valves arranged on the main pipeline;

the number of the reset devices and the number of the fixing devices are at least two respectively, the reset devices and the fixing devices are fixedly arranged on the platform, and each reset device and each fixing device respectively correspond to one station;

the reset driving device is a reset cylinder, and the reset rod is arranged on a cylinder rod of the reset cylinder;

a groove with the shape and the size matched with those of the flange plate is arranged at the station of the platform, and the groove is used for accommodating the flange plate and sealing the opening of the flange plate;

the liquid pool is a water tank with an upper opening.

The utility model has the following beneficial effects:

the air leakage detection device for the elbow type flange adopts the structure of the utility model, the platform provides a sealing connection surface of the sealing flange plate, the gland seals the connection hole, and the inflation sealing head arranged at the free end of the reset rod is connected with the bent pipe of the flange in a sealing way to enable the inner cavity of the flange to be communicated with the inflation device in a sealing way, so that the sealing connection of each part is reliable and easy to operate.

Furthermore, because the open-ended recess that can seal the ring flange is provided with on the work position of platform, the ring flange of the flange that is detected is detained and is set up in this recess, this recess can fix a position the ring flange on the one hand, on the other hand can seal the open end of ring flange, therefore the position precision of flange is good, the location is reliable, it is sealed reliable, the gland easily accurately presses on the connecting hole, during the detection, only need detain the ring flange in the recess, fix a position the flange by the recess is supplementary, therefore, the operation is more convenient, it is sealed more reliable, can realize the automation of detection.

Drawings

FIG. 1 is a schematic front view of the configuration of an embodiment of the leak inspection device of the present invention;

FIG. 2 is a top view of FIG. 1;

fig. 3 is a perspective view of the air leakage checking structure of the present invention.

The description of the reference numerals will be given,

100. a liquid pool; 101. a tank body; 102. a liquid;

200. a fixing device; 201. a locking cylinder; 202. a gland;

301. inflation tube connector

400. A resetting device; 401. an inflation hole; 402. an inflatable sealing head; 403. a reset lever; 404. resetting the air cylinder; 405. gas circuit pipe connector

500. A support device; 501. a platform; 503. hoisting frame

600. An elbow flange; 601. a flange plate; 603. A flange elbow;

700. a lifting device.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals.

As shown in fig. 1 to 3, an elbow flange gas leakage inspection device includes a liquid pool 100, a fixing device 200 for fixing an elbow flange 600, an inflating device (not shown in the drawings) for inflating the elbow flange 600, a restoring device 400 for closing or opening the elbow, a supporting device 500 for supporting the fixing device 200 and the restoring device 400, and a lifting device 700 for driving the elbow flange to be immersed in or floated out of liquid.

As shown in fig. 1-3, the fluid tank 100 includes a tank body 101 in which a fluid 102 is contained. The supporting device 500 comprises a hoisting frame 503 and a platform 501, wherein the platform 501 is arranged above the liquid and is used for supporting and fixing the lifting device 502, the resetting device 400 and the fixing device 200. The fixing device 200 comprises a locking cylinder 201 and a gland 202, the locking cylinder is used as a locking device of the elbow flange and is fixedly arranged below or above the platform 501, when the locking cylinder is arranged below the platform, the free end of a cylinder rod of the locking cylinder extends out of the platform from the lower side of the platform, the gland 202 is connected to the free end of the cylinder rod, the lower surface of the gland, namely the surface fixedly connected with the cylinder rod, is a plane, the gland is used for compressing a flange plate, so that the elbow flange is fixed on the platform, the number of the glands can be set according to the shape of the flange plate, preferably, each gland is connected with one locking cylinder and is driven by one independent locking cylinder, of course, the cylinder rod of the same locking cylinder can be simultaneously connected with each gland through a connecting piece, and the glands are driven by the same locking cylinder to move together. When a plurality of locking cylinders are arranged, the locking cylinders are respectively connected with the same air supply main pipeline, and a valve is arranged on the main pipeline to control the action of the cylinders. The relative position between each gland is related to the shape of the flange plate, for example, when the flange plate is a diamond-shaped plate, the gland is positioned at the intersection of two sharp corner edges of the flange plate, and when the flange plate is a round plate, each gland is distributed along the circumference of the flange plate in a quartering or trisection manner, so that the number of the glands is minimized and the fixation is more reliable. When a workpiece needs to be pressed, the locking cylinder drives the pressing cover to ascend, the flange plate is buckled on the surface of the platform, the connecting surface of the flange plate is sealed by the platform, the pressing cover presses the connecting part of the flange plate, and the elbow pipe faces the direction of the resetting device.

The resetting device 400 is a reciprocating device, which comprises a reciprocating driving device and a resetting rod 403, wherein the reciprocating driving device drives the resetting rod to do linear reciprocating movement; the reset rod is a hollow rod with an opening at a free end, namely a blind hole is arranged along the central line of the reset rod, the opening end of the blind hole is positioned at the free end of the reset rod, an inflation hole 401 is arranged on the reset rod, an inflation tube connector 301 is arranged on the inflation hole, the inflation hole is intersected and communicated with the blind hole, an output pipeline of the inflation device is connected through the inflation tube connector 301, an inflation sealing head 402 is arranged at the free end of the reset rod and is used for being communicated with a flange elbow in a sealing manner, the reciprocating driving device can adopt any linear reciprocating driving device, a reset cylinder 404 is preferably adopted as the reciprocating driving device in the scheme, the output end of the reset cylinder is connected with the reset rod, and the output end of the reset cylinder can also serve as the reset rod.

The lifting device 502 is a reciprocating driving device, the output end of the lifting device is connected with the upper surface of the platform, the main body part of the lifting device is fixedly lifted through the lifting frame 503, preferably, a lifting cylinder is used as the lifting device, the free end of a cylinder rod of the lifting cylinder is connected with the upper surface of the platform, and the cylinder body is fixedly connected with the lifting frame.

When in use, the elbow flange 600 is arranged at a working position, the flange plate is attached to the surface of the platform in a sealing connection, the pressing cover is aligned with the edge of the flange plate, the locking cylinder acts to press the pressing cover on the edge of the flange plate to fix the flange on the platform, a sealing structure is formed between the platform and the flange plate, the elbow pipe is opposite to the inflatable sealing head, the central lines of the elbow pipe and the inflatable sealing head are collinear, the reset driving device drives the reset rod to move forwards, the platform, the gland, the inflatable sealing head, the inflating device and the elbow flange are combined to form a sealed system by the aid of the inflatable sealing head which is connected with the free end of the flange elbow in an inserting manner, the lifting device 700 acts to enable the platform to move downwards to immerse the elbow flange in liquid, the inflating valve is opened, the flange elbow is inflated by the inflating device and is continuously pressurized, when the set pressure is reached, if no air bubbles are generated in the liquid, the flange elbow is airtight. And after the detection is finished, stopping inflating, driving the platform to float upwards and lift by the lifting device to separate the platform from the liquid surface, moving the resetting device, resetting the resetting rod, moving the gland by the locking device, loosening the flange, and taking down the flange to finish the detection work.

The gas leakage checking device adopting the structure of the utility model is characterized in that the surface of the platform is connected with the surface of the flange plate in a sealing way, the inflatable sealing head is connected with the flange elbow in an inserting and sealing way, and the flange plate is tightly pressed by the gland, therefore, the sealing is reliable, the operation is simple, the gas leakage at the sealing position is not easy, and the false alarm is reduced.

In order to fix the flange, the sealing and fixing grooves can be arranged on the platform, the shape and size of the grooves are matched with those of the flange plates, when the flange plates are connected with the platform in a sealing mode, the flange plates are located in the sealing grooves, and the sealing grooves are used for achieving sealing connection with the flange plates. For example, when the ring flange is circular, sealed recess is circular recess, and when the ring flange was the rhombus dish, sealed recess was rhombus recess, and seal groove and ring flange cooperation position were the plane, like this, when arranging the flange in on the platform, the position of flange is accurate and when the gland pressed the flange dish the difficult activity of flange, improves the convenience and the accuracy and the sealing reliability of operation.

Of course, a pressing cover can be used for pressing the whole edge part of the flange plate, at the moment, the pressing cover can be made into an annular structure similar to the shape of the outer edge of the flange plate, and the pressing cover is connected with a cylinder rod of the locking cylinder through a connecting piece.

Of course, the locking cylinder can also be fixedly arranged above the platform by being hoisted by the hoisting frame, and the cylinder rod of the locking cylinder is fixedly connected with the upper surface of the gland.

In order to improve the detection efficiency, more than two resetting devices and fixing devices can be arranged on one platform simultaneously, more than two stations are arranged simultaneously, the fixing devices and the resetting devices are respectively arranged corresponding to the positions of the respective stations, the inflating connectors of the resetting devices are respectively connected with the inflating devices, and therefore the inflating devices can inflate a plurality of flanges simultaneously, the air leakage detection is completed, and the working efficiency is improved.

The specific examples are merely illustrative of the utility model and are not intended to be limiting.

Claims

1. The utility model provides an elbow class flange gas leakage inspection device, includes the liquid pond, is provided with liquid, its characterized in that in the cell body: comprises a fixing device consisting of a locking cylinder and a gland, a reset device consisting of a reset rod and a reset driving device, a supporting device consisting of a platform and a hoisting frame, a lifting device for leading the platform to sink into or float out of the water surface, the output end of the lifting device is connected with the platform, the main body end of the lifting device is connected with the hoisting frame, the main body of the lifting device is fixed above the tank body through the hoisting frame, the station position of the platform provides a sealing surface for sealing connection with the connecting surface of a flange plate, the lifting device drives the platform to lift towards or back to the tank body to lead the platform to be immersed into or float out of liquid, the reset driving device is fixedly arranged on the platform, the reset rod is connected with the output end of the reset driving device, the free end of the reset rod is provided with a sealing connector which is used for sealing communication with the free end of a flange elbow, the reset rod is provided with a blind hole along the central line direction of the reset rod, be provided with on the release link surface and aerify the hole and be linked together with the blind hole, the release link is through aerifing the sealed intercommunication of hole and aerating device, reset drive arrangement is used for driving the release link towards or keep away from the direction reciprocating motion of flange elbow free end and make flange elbow and release link through aerifing the sealed connection of seal, the cylinder pole and the gland fixed connection of locking cylinder, locking cylinder drive gland is kept away from or is close to the platform and can press on the edge of flange dish and fix the gland when being close to the platform, loosen the gland when keeping away from the platform.

2. The elbow flange gas leakage inspection device according to claim 1, characterized in that: the locking cylinder is fixedly arranged below the platform, and the cylinder rod penetrates through the platform to extend out of the upper part of the platform to be fixedly connected with the gland.

3. The elbow flange gas leakage inspection device of claim 2, wherein: the air channel control device comprises a plurality of locking cylinders, wherein each locking cylinder is fixedly connected with a gland, each locking cylinder is connected with a main pipeline through a branch pipe, and the main pipeline is provided with valves for controlling the on-off of the air channel of each locking cylinder.

4. The elbow flange gas leakage inspection device according to claim 1, characterized in that: the device comprises a platform, at least two reset devices and at least two fixing devices, wherein the reset devices and the fixing devices are fixedly arranged on the platform respectively, and each reset device and each fixing device correspond to a station respectively.

5. The elbow flange gas leakage detection device according to claim 4, characterized in that: the reset driving device is a reset cylinder, and the reset rod is arranged on a cylinder rod of the reset cylinder.

6. The elbow type flange gas leakage inspection device according to claim 1 or 4, characterized in that: and a groove with the shape and the size matched with those of the flange plate is arranged at the station of the platform, and the groove is used for accommodating the flange plate and sealing the opening of the flange plate.

7. The elbow flange gas leakage inspection device according to claim 1, characterized in that: the liquid pool is a water tank with an upper opening.