Flange interface sealing performance detection device

Abstract

The utility model discloses a flange interface sealing performance detection device, comprising a housing which is formed by splicing two semicircular housings which are symmetrically arranged; partition plates are arranged on the arc-shaped plates in a radial sliding mode, and the ends of the partition plates can abut against and be inserted into a pipeline arranged at the axis of the shell so as to form a plurality of equidistant spaces in a partition mode. According to the flange interface sealing performance detection device provided by the utility model, the partition plates are driven to move in the radial direction, so that the end parts of the partition plates can abut against and be inserted into the pipeline arranged at the axis of the shell so as to form a plurality of equidistant spaces through separation, and the detection result is visually displayed through the form change of the air bags correspondingly arranged in the spaces. Instruments such as a vacuum air pump and a pressure detector do not need to be carried additionally, and carrying is convenient.

Description

Technical Field

[0001] The utility model relates to a sealing detection device, in particular to a flange interface sealing detection device. Background Art

[0002] Flanges are generally used to connect two pipes and are widely used in the connection of gas pipelines. It is necessary to regularly test the sealing of the flange interface to avoid safety accidents caused by air leakage at the flange interface.

[0003] Announcement No. CN205679362U, publication date 20161109, discloses a pipe flange gas leakage detection device, which includes a closed space device and a micro-negative pressure vacuum device, the closed space device is provided with a vent, the vent is provided with a pneumatic joint, the closed space device is installed on the pipeline and covered on the outer periphery of the flange, a cavity is formed between the closed space device and the flange, and the cavity receives the pipeline leaked gas; the micro-negative pressure vacuum device has a micro-negative pressure vacuum pump, the micro-negative pressure vacuum pump has a vacuum interface end and an air source interface end, the silicone tube connects the vacuum interface end and the pneumatic joint, the silicone tube is provided with a pneumatic switch valve and the pressure gauge, the air source interface end is connected to the air source provided externally, during detection, the silicone tube connects the pneumatic joint and the measuring instrument ventilation interface, and the leakage rate measurement result is obtained by the leakage rate measuring instrument.

[0004] In the prior art including the above-mentioned patent, by opening the pneumatic switch valve, the air source provided externally starts to ventilate the micro-negative pressure vacuum pump, thereby extracting the gas in the enclosed space device until the pressure indication number reaches a preset value so that the interior of the enclosed space device becomes a micro-negative pressure. The pneumatic switch valve is closed, and the micro-negative pressure vacuum pump is stopped and removed, and then a pressure gauge is used to perform a sealing test. The entire device has many parts and is relatively scattered, making it inconvenient to carry. Utility Model Content

[0005] The utility model aims to provide a flange interface sealing detection device, which is used to solve the problem that the prior art has many components and is inconvenient to carry.

[0006] In order to achieve the above object, the utility model provides the following technical solution: a flange interface sealing detection device, comprising:

[0007] The shell is formed by splicing two symmetrically arranged semicircular shells;

[0008] The arc-shaped plate is provided with a partition plate for radial sliding, and the end of the partition plate can be inserted into the pipe arranged at the axis of the shell to separate and form a plurality of equidistant spaces.

[0009] Preferably, it further comprises an annular push plate symmetrically arranged in the shell, to which a push ring is connected, and a locking bolt is arranged on the push ring, and the locking bolt is coupled to the shell.

[0010] Preferably, it further comprises airbags arranged in a circumferential array on the shell, the threaded tubes on the airbags are coupled to the shell, and the airbags are communicated with the separation chamber.

[0011] Preferably, it also includes a fixed plate arranged on the shell, on which sliding grooves are arranged in a circular array.

[0012] Preferably, the invention further comprises a turntable rotatably arranged in the fixed disk, on which second arc grooves are arranged in a circular array, and the second arc grooves are arranged corresponding to the sliding grooves.

[0013] As a preferred embodiment, it also includes a fixed column fixedly arranged on the partition plate, which is slidably arranged in the slide groove and the second arc groove.

[0014] In the above technical scheme, a flange interface sealing detection device provided by the utility model has the following beneficial effects: by driving the partition plate to move radially, the end of the partition plate can be inserted into the pipe arranged at the axis of the shell to separate and form a plurality of equidistant spaces, and the shape change of the gas collection bag correspondingly arranged in the space can intuitively display the detection result. Compared with the prior art, there is no need to carry vacuum air pumps, pressure detectors and other instruments separately, which is convenient to carry and effectively saves production costs. It is also convenient to manufacture and has a small size. It can carry multiple flange interfaces and install them at the same time for sealing detection, which is convenient and quick. At the same time, it can preliminarily determine the location and leakage of the gas leak, which is convenient for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 A front-view stereoscopic structural schematic diagram provided for an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of a rear-view stereoscopic structure provided by an embodiment of the utility model;

[0018] Figure 3 A schematic diagram of a side cross-sectional structure provided by an embodiment of the utility model;

[0019] Figure 4 A schematic diagram of a front cross-sectional structure provided for an embodiment of the utility model;

[0020] Figure 5 A schematic diagram of the front cross-sectional structure of the annular push plate provided in an embodiment of the utility model;

[0021] Figure 6 A schematic diagram of the front cross-sectional structure of a turntable provided in an embodiment of the utility model;

[0022] Figure 7 A front view schematic diagram of the structure of the fixed disk and the rotating disk provided in an embodiment of the utility model;

[0023] Figure 8 A schematic diagram of the rear structure of the fixed disk and the rotating disk provided in an embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 1. Shell; 11. Mounting plate; 2. Fixed plate; 21. First arc groove; 22. Locking nut; 23. Turntable; 231. Second arc groove; 24. Slide groove; 25. Threaded column; 3. Partition plate; 31. Fixed column; 32. Arc plate; 4. Push ring; 41. Locking bolt; 42. Connecting column; 43. Annular push plate; 5. Airbag; 6. Partition chamber. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] like Figure 1-8 As shown, a flange interface sealing detection device comprises:

[0028] The housing 1 is formed by splicing two symmetrically arranged semicircular shells;

[0029] The arc-shaped plate 32 has a partition plate 3 radially slidably disposed thereon, and the end of the partition plate 3 can abut against the pipe arranged at the axis of the shell 1 to separate and form a plurality of equidistant spaces.

[0030] Specifically, it also includes an annular push plate 43 symmetrically arranged in the housing 1, on which a push ring 4 is connected, and a locking bolt 41 is arranged on the push ring 4, and the locking bolt 41 is coupled to the housing 1. During the inspection, the two semicircular shells are first sleeved on the flange interface of the pipeline, and the two semicircular shells are spliced ​​into a complete housing 1. Since the two semicircular shells are symmetrically arranged, the components at the corresponding positions are also spliced ​​synchronously to form a complete device. After splicing, the housing 1 is locked by the mounting plate 11 and the fixing bolts symmetrically arranged on the housing 1, and the splicing of each component and the semicircular shell is completed by the keyway, thereby completing the rapid installation of the device.

[0031] Further, after the installation is completed, the partition plates 3 arranged in a circumferential array are driven to move radially, and the partition plates 3 move synchronously toward the flange interface and finally abut against the edge of the flange interface. Figure 3 and Figure 4 As shown, the position of the entire device is adjusted so that the pipeline is located at the axis of the shell 1, thereby realizing automatic positioning of the device, which is convenient and quick, and can be quickly positioned and adjusted according to different pipe diameters, thereby realizing the sealing detection of flange interfaces of different pipe diameters and improving the practicality of the device.

[0032] Furthermore, the arc plates 32 are slidably arranged on both sides of the abutting ends of the partition plate 3 and the flange interface, and the positions of the arc plates 32 on two adjacent partition plates 3 are staggered up and down, such as Figure 4 As shown, when the partition plate 3 moves radially, the arc plate 32 moves toward the flange interface synchronously. When the partition plate 3 abuts the flange interface, the arc plate 32 is located on both sides of the edge of the flange interface, and two adjacent staggered arc plates 32 are partially overlapped.

[0033] Further, the push ring 4 is pushed, and the push ring 4 pushes the annular push plate 43 to move through the connecting column 42, so that the annular push plate 43 pushes the arc plate 32 to move, so that the arc plate 32 abuts against the two side surfaces far from the flange interface, and then the locking bolts 41 are twisted to further lock the push ring 4, thereby locking the position of the annular push plate 43, as shown in FIG. Figure 5 As shown, the annular push plate 43 is plugged into the partition plate 3, so that the flange interface is equidistantly separated in the closed partition chamber 6 by the separation of the annular push plate 43, the partition plate 3 and the arc plate 32. After a period of time, the change in the shape of the gas collection bag provided on the partition chamber 6 is observed to detect the sealing of the flange interface, and it is possible to visually observe whether there is leakage at the flange interface. Moreover, since the flange interface is equidistantly separated in the closed partition chamber 6, the partition chamber 6 has a small space and does not require a vacuum pump or other equipment to evacuate the interior to form a slight negative pressure for detection. This is not only convenient to carry, but also saves production costs. Moreover, the detection result is intuitive and clear, and the location of the leakage can be preliminarily determined, which is convenient for later maintenance.

[0034] In the above technology, by driving the partition plate 3 to move radially, the end of the partition plate 3 can be inserted into the pipe arranged at the axis of the shell 1 to separate and form a plurality of equidistant spaces, and the shape change of the gas collection bag correspondingly arranged in the space can intuitively display the detection result. Compared with the prior art, there is no need to carry vacuum air pumps, pressure detectors and other instruments, which is convenient to carry and effectively saves production costs. It is easy to manufacture and has a small size. It can carry multiple flange interfaces and install them at the same time for sealing detection. It is convenient and quick. At the same time, it can preliminarily determine the location and leakage of the gas leak, which is convenient for later maintenance.

[0035] As a further embodiment of the present invention, the airbag 5 is arranged in a circumferential array on the shell 1 , the threaded tube on the airbag 5 is coupled with the shell 1 , and the airbag 5 is communicated with the partition chamber 6 .

[0036] Specifically, Figure 3 and Figure 4 As shown, during detection, the airbag 5 and the separation chamber 6 are arranged correspondingly. When air leakage occurs at the flange interface, the air pressure in the corresponding separation chamber 6 increases, and the gas enters the airbag 5 through the threaded tube, causing the airbag 5 to deform and bulge, thereby intuitively detecting the sealing of the flange interface. At the same time, the location of the air leakage and the leakage situation can be preliminarily determined.

[0037] Furthermore, since the airbag 5 is coupled to the shell 1, the airbag 5 at the leaking position can be removed for gas sampling and testing. At the same time, after the airbag 5 is removed, the gas port at the corresponding position can be sealed by a sealing plug to prevent further leakage of the gas, thereby realizing the sealing test of the flange interface, the gas sampling test and the temporary sealing of the leaking port at the same time, with a simple structure and strong practicality.

[0038] As a further embodiment of the present invention, it also includes a fixing plate 2 arranged on the housing 1, on which sliding grooves 24 are arranged in a circumferential array.

[0039] Specifically, the slide groove 24 is used to provide the partition plate 3 with a space for radial movement.

[0040] As a further embodiment of the present invention, the present invention further comprises a turntable 23 rotatably disposed in the fixed disk 2 , on which second arc grooves 231 are arranged in a circular array, and the second arc grooves 231 are arranged corresponding to the slide grooves 24 .

[0041] Specifically, it also includes a fixed column 31 fixedly arranged on the partition plate 3, which is slidably arranged in the slide groove 24 and the second arc groove 231. A threaded column 25 is arranged on the rotating disk 23, and a locking nut 22 is coupled to the threaded column 25. By twisting the locking nut 22, the locking nut 22 moves away from the fixed disk 2 on the threaded column 25, thereby releasing the lock of the threaded column 25, and pushing the locking nut 22 by hand, thereby driving the threaded column 25 to slide in the first arc groove 21 on the fixed disk 2, thereby driving the rotating disk 23 to rotate in the fixed disk 2, as shown in FIG. Figure 6 As shown, the fixed disk 2 rotates clockwise, thereby synchronously rotating through the second arc groove 231 opened on the fixed disk 2, so that the fixed column 31 moves relatively in the second arc groove 231. Under the push of the groove wall of the second arc groove 231 and the limitation of the slide groove 24, the fixed column 31 moves radially along the slide groove 24, thereby driving the partition plate 3 to move radially. No additional driving source is required for driving, which further simplifies the structure, saves manufacturing costs, and is convenient to carry.

[0042] Working principle: first, two semicircular shells are sleeved on the flange interface of the pipeline, and the two semicircular shells are spliced ​​into a complete shell 1. Since the two semicircular shells are symmetrically arranged, the components at corresponding positions are also spliced ​​synchronously to form a complete device. By twisting the locking nut 22, the locking nut 22 is moved away from the fixed disk 2 on the threaded column 25, thereby releasing the lock on the threaded column 25, and pushing the locking nut 22 by hand, thereby driving the threaded column 25 to slide in the first arc groove 21 on the fixed disk 2, thereby driving the rotating disk 23 to rotate in the fixed disk 2, as shown in FIG. Figure 6 As shown, the fixed disk 2 rotates clockwise, thereby synchronously rotating through the second arc groove 231 opened on the fixed disk 2, so that the fixed column 31 moves relatively in the second arc groove 231, and the fixed column 31 moves radially along the slide groove 24 under the push of the groove wall of the second arc groove 231 and the limit of the slide groove 24, thereby driving the partition plate 3 to move radially, and the partition plate 3 moves synchronously toward the flange interface and finally abuts against the edge of the flange interface, as shown in FIG. Figure 3 and Figure 4 As shown, the position of the entire device is adjusted so that the pipeline is located at the axis of the shell 1, thereby realizing automatic positioning of the device, pushing the push ring 4, and the push ring 4 pushes the annular push plate 43 to move through the connecting column 42, thereby pushing the arc plate 32 to move through the annular push plate 43, so that the arc plate 32 abuts against the surfaces on both sides far from the flange interface, and then twisting the locking bolt 41 to further lock the push ring 4, thereby locking the position of the annular push plate 43, as shown in FIG. Figure 5 As shown, the annular push plate 43 is plugged into the partition plate 3, so that the flange interface is equidistantly separated in the closed partition chamber 6 by the separation of the annular push plate 43, the partition plate 3 and the arc plate 32. After a period of time, the changes in the shape of the gas collection bag set on the partition chamber 6 are observed to detect the sealing of the flange interface.

[0043] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A flange interface sealing detection device, characterized in that: include: The housing (1) is formed by splicing two symmetrically arranged semicircular shells; The arc-shaped plate (32) has a partition plate (3) radially slidably arranged thereon, and the end of the partition plate (3) can be inserted into a pipe arranged at the axis of the shell (1) to separate and form a plurality of equidistant spaces.

2. A flange interface sealing detection device according to claim 1, characterized in that: It also comprises an annular push plate (43) symmetrically arranged in the housing (1), on which a push ring (4) is connected, and a locking bolt (41) is arranged on the push ring (4), and the locking bolt (41) is coupled to the housing (1).

3. A flange interface sealing detection device according to claim 1, characterized in that: It also includes air bags (5) arranged in a circumferential array on the shell (1), the threaded tubes on the air bags (5) are coupled to the shell (1), and the air bags (5) are connected to the separation chamber (6).

4. A flange interface sealing detection device according to claim 1, characterized in that: It also includes a fixed plate (2) arranged on the housing (1) and having sliding grooves (24) arranged in a circular array.

5. A flange interface sealing detection device according to claim 4, characterized in that: It also comprises a rotating disk (23) rotatably arranged in the fixed disk (2), on which second arc-shaped grooves (231) are arranged in a circular array, and the second arc-shaped grooves (231) are arranged corresponding to the sliding grooves (24).

6. A flange interface sealing detection device according to claim 5, characterized in that: It also includes a fixed column (31) fixedly arranged on the partition plate (3), which is slidably arranged in the sliding groove (24) and the second arc groove (231).

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