CN213022161U - Pipe fitting air tightness detection device - Google Patents
Pipe fitting air tightness detection device Download PDFInfo
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- CN213022161U CN213022161U CN202021897465.9U CN202021897465U CN213022161U CN 213022161 U CN213022161 U CN 213022161U CN 202021897465 U CN202021897465 U CN 202021897465U CN 213022161 U CN213022161 U CN 213022161U
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Abstract
The utility model discloses an air tightness detection device of pipe fitting sets up in examining test table, and detection device includes bearing piece, last sealing rubber pad, lower sealing rubber pad, compresses tightly subassembly and air inlet unit, goes up sealing rubber pad and lower sealing rubber pad and sets up respectively in bearing piece, goes up the position that awaits measuring that is equipped with corresponding pipe fitting position of awaiting measuring between sealing rubber pad and the lower sealing rubber pad and places the district, and air inlet unit places the district with the position that awaits measuring and is linked together, compresses tightly the subassembly and makes upper sealing rubber pad and lower sealing rubber pad radial expansion. Use the utility model discloses during the gas tightness detection device of pipe fitting, the welding seam position that makes the pipe fitting that awaits measuring is located the position that awaits measuring and places the district within range, and the pulling compresses tightly the subassembly and makes upper sealing rubber pad and lower sealing rubber pad radial expansion to with the pipe fitting section inner chamber between upper sealing rubber pad and the lower sealing rubber pad sealed, inwards aerify the pressurization, with dry process or wet process, can measure whether the welding seam department leaks gas. The operation is simple, the automation degree is high, and the testing efficiency is improved.
Description
Technical Field
The utility model relates to a pipe fitting gas tightness detection device technical field especially relates to the gas tightness detection device of pipe fitting.
Background
When a pipe fitting is welded with a pipe fitting or a pipe fitting is welded with a flange, an air tightness test needs to be carried out on a welding seam at the welding position of the pipe fitting, most of the existing pipe fitting air tightness tests adopt a pipe orifice plugging method, as shown in fig. 1, the air tightness of a middle cavity of the pipe fitting 10 needs to be detected, two ends of the pipe fitting 10 need to be covered and plugged by rubber blocks 11, one pipe orifice is selected to be provided with an air inlet 12 for pressurization, and whether the pipe fitting leaks air or not is detected by a conventional dry or wet type side leakage method. If the pipe fitting is provided with a plurality of pipe orifices, the same method can be adopted, a plurality of pipe orifices are plugged, one pipe orifice is selected to be provided with an air inlet for pressurization, and then the air tightness of the sealed cavity to be tested is tested.
The method for plugging the pipe orifice by covering rubber is simple and easy to implement, but the method meets the structural form of a strainer pipe 20 shown in fig. 2, one end of the pipe fitting is flared, a filter screen 21 is riveted, the pipe fitting is difficult to plug by using rubber when being blocked by the filter screen 21, and the method is not suitable for detecting the air tightness of the pipe fitting by covering and plugging the pipe orifice by using the rubber.
In addition, if the size of the strainer pipe is very long, the detection platform is required to be large in the form of plugging two ends, but the actual requirement is only on a small section of the welding line, so that the manufacturing cost is wasted; the mounting positions of the plugging devices required for different pipeline trends are different, the universality is poor, and semi-automatic pressure testing is difficult to realize.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned defect of prior art, the utility model aims to solve the technical problem that an air tightness detection device of pipe fitting is provided, detection effect is good, is fit for the air tightness detection of multiple pipe fitting, and the commonality is high.
The air tightness detection device of the pipe fitting is arranged on the detection platform and is characterized in that,
the detection device comprises a bearing piece, an upper sealing rubber pad, a lower sealing rubber pad, a pressing assembly and an air inlet device, wherein the upper sealing rubber pad and the lower sealing rubber pad are respectively arranged on the bearing piece, a to-be-detected part placing area corresponding to a pipe welding seam is arranged between the upper sealing rubber pad and the lower sealing rubber pad, the air inlet device is communicated with the to-be-detected part placing area, and the pressing assembly enables the upper sealing rubber pad and the lower sealing rubber pad to expand radially.
Preferably, the compression assembly comprises an upper compression plate and a lower compression plate;
the supporting piece is provided with an upper supporting plate, a lower supporting plate and a supporting plate connecting piece, the supporting plate connecting piece is fixedly connected with the upper supporting plate and the lower supporting plate, and the direction of the supporting plate connecting piece is matched with the direction of the pipe to be measured;
the upper sealing rubber pad is positioned between the upper pressing plate and the upper supporting plate, the lower sealing rubber pad is positioned between the lower pressing plate and the lower supporting plate, and the upper supporting plate is connected with a tension piece.
Preferably, the pressing assembly further comprises a connecting rod, the upper pressing plate is fixedly connected with the lower pressing plate through the connecting rod, and the connecting rod sequentially penetrates through the upper sealing rubber pad and the upper supporting plate;
the tension piece is a tension rod, one end of the tension rod is fixedly connected with the upper pressure plate, and the other end of the tension rod penetrates through and extends out of the supporting plate connecting piece.
Preferably, one end of the tension rod extending out of the supporting plate connecting piece is connected with an air cylinder or a hydraulic cylinder.
Preferably, the pressing assembly further comprises a pull rod, the upper pressing plate and the lower pressing plate are separately arranged, the lower pressing plate is sleeved on the supporting plate connecting piece, the head of the pull rod is located above the lower pressing plate, the rod part of the pull rod sequentially penetrates through the lower pressing plate, the lower sealing rubber pad and the lower supporting plate, and the tail end of the pull rod is fixedly connected with a power connecting disc;
the tension piece comprises a transition rod and a pull rope, the transition rod is fixedly connected with the upper pressure plate and penetrates through the upper sealing rubber pad and the upper supporting plate, one end of the pull rope is fixedly connected with the transition rod, and the other end of the pull rope is fixedly connected with the power connecting disc.
Preferably, the power connection disc is connected with an air cylinder or a hydraulic cylinder.
Preferably, the air inlet device is arranged inside the supporting plate connecting piece, and an air outlet of the air inlet device is arranged on the peripheral wall of the supporting plate connecting piece.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a pipe fitting gas tightness detection device is equipped with the region of placing of the position of awaiting measuring that corresponds the pipe fitting welding seam between sealing rubber pad and the lower sealing rubber pad on it, and air inlet unit places the region with the position of awaiting measuring and is linked together, compresses tightly the subassembly and makes upper sealing rubber pad and lower sealing rubber pad radial expansion. During detection, the upper sealing rubber pad, the lower sealing rubber pad and the pressing assembly of the detection device are partially inserted into the pipe fitting, so that the welding seam position of the pipe fitting to be detected is located in the range of the placement area of the part to be detected, the pressing assembly is pulled to enable the upper sealing rubber pad and the lower sealing rubber pad to radially expand, the inner cavity of the pipe fitting section between the upper sealing rubber pad and the lower sealing rubber pad is sealed, air is inflated inwards to pressurize, and whether the air leakage occurs at the welding seam can be detected by a dry method or a wet method. The operation is simple, the automation degree is high, and the testing efficiency is improved. And no matter how long the pipe fitting is tested, only need with pipe fitting inner chamber local (near the welded seam district that awaits measuring) carry out the part shutoff can, solve many pipe fittings because of the problem that the overall structure overlength is difficult to detect to detection device occupation space is little.
Drawings
FIG. 1 is a schematic view of a prior art method for detecting the air tightness of a pipe fitting by using a pipe orifice plugging method;
FIG. 2 is a schematic view of the strainer tube;
fig. 3 is a schematic structural diagram of a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second embodiment of the present invention;
in the figure: 10-pipe member, 11-rubber block, 12-air inlet, 20-strainer pipe, 21-filter screen, 30-A straight tubular member; 40-upper pressing plate, 41-lower pressing plate, 42-upper sealing rubber gasket, 43-lower sealing rubber gasket, 44-connecting rod, 45-upper supporting plate, 46-lower supporting plate, 47-supporting plate connecting piece, 48-air inlet pipe, 49-tension rod and H1-a site to be tested placement area, C-cylinder, a-weld; 60-upper compacting plate, 61-lower compacting plate, 62-upper sealing rubber gasket, 63-lower sealing rubber gasket, 64-pull rod, 65-upper supporting plate, 66-lower supporting plate, 67-supporting plate connecting piece, 68-air inlet pipe, 691-transition rod, 692-pull rope, 70-power connecting plate, H2A region for placing the part to be tested, a B-test stand and a D-weld.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided in conjunction with the accompanying drawings and specific embodiments for further understanding the objects, aspects and functions of the present invention, but not for limiting the scope of the appended claims.
The first embodiment is as follows:
as shown in fig. 1 and 2, the pipe airtightness detection device is disposed on the detection table B, and includes a support member, an upper sealing rubber pad 42, a lower sealing rubber pad 43, a pressing assembly, and an air inlet device, wherein the upper sealing rubber pad 42 and the lower sealing rubber pad 43 are disposed on the support member, and a placement region H corresponding to a to-be-detected portion of the pipe is disposed between the upper sealing rubber pad 42 and the lower sealing rubber pad 431For example, in the pipe fitting of fig. 3, the airtightness needs to be detected at the weld a, and the weld a is placed in the region H where the portion to be detected is placed1The air inlet device can be arranged as an air inlet pipe or an air inlet channel, the air inlet device is positioned inside the supporting plate connecting piece 47, and the air outlet of the air inlet device is arranged on the peripheral wall of the supporting plate connecting piece. When the air inlet device is set as an air inlet pipe, the air inlet pipe 48 and the placement area H of the part to be measured1In communication, the compression assembly causes radial expansion of the upper and lower packing rubbers 42, 43.
The compacting assembly comprises an upper compacting plate 40 and a lower compacting plate 41; the bearing piece is provided with an upper supporting plate 45, a lower supporting plate 46 and a supporting plate connecting piece 47, and the supporting plate connecting piece 47 is fixedly connected with the upper supporting plate 45 and the lower supporting plate 46; the direction of the supporting plate connecting piece 47 is matched with the direction of the pipe to be detected; when the tested pipe fitting is a straight pipe, the supporting plate connecting piece 47 is set to be a straight rod or a straight pipe, and when the tested pipe fitting is a bent pipe, the supporting plate connecting piece 47 is set to be a rod piece or a pipe fitting imitating the shape of the bent pipe.
The upper sealing rubber gasket 42 is positioned between the upper pressing plate 40 and the upper supporting plate 45, the lower sealing rubber gasket 43 is positioned between the lower pressing plate 41 and the lower supporting plate 46, the upper supporting plate 45 is connected with a tension piece, the tension piece is preferably set to be a tension rod 49 because the trend of the pipe fitting is a straight pipe, one end of the tension rod 49 is fixedly connected with the upper pressing plate 40, and the other end of the tension rod 49 penetrates through and extends out of the supporting plate connecting piece 47.
The pressing assembly further comprises a connecting rod 44, the upper pressing plate 40 is fixedly connected with the lower pressing plate 41 through the connecting rod, and the connecting rod 44 sequentially penetrates through the upper sealing rubber pad 42 and the upper supporting plate 45; the upper pressing plate 40 is fixedly connected with the lower pressing plate 41 through the connecting rod, power sources can be saved, the upper pressing plate 40 and the lower pressing plate 41 are not required to be respectively connected with the power sources when the upper sealing rubber pad 42 and the lower sealing rubber pad 43 are compressed, and the upper sealing rubber pad 42 and the lower sealing rubber pad 43 can be simultaneously sealed to be detected to place the region H1The function of (1).
The end of the tension rod 49 extending out of the pallet connection element 47 is connected with a cylinder C or a hydraulic cylinder, which can be pulled manually in some cases.
The operation method for detecting the pipe fitting by using the air tightness detection device comprises the following steps:
inserting the lower supporting plate 46 and the parts above into the pipe fitting to make the welding line A of the pipe fitting 30 to be tested positioned in the placing area H of the part to be tested1In the range, the cylinder C pulls the tension rod 49 to pull the upper pressing plate 40 to press the upper sealing rubber gasket 42 to compress the upper sealing rubber gasket 42 for radial expansion, and meanwhile, the lower pressing plate 41 presses the lower sealing rubber gasket 43 to compress the upper sealing rubber gasket 42 for radial expansion, so that the inner cavity of the pipe section between the upper sealing rubber gasket 42 and the lower sealing rubber gasket 43 is sealed, the air inlet pipe 48 is used for inflating and pressurizing the sealing cavity of the pipe 30 to be tested, the pressure is maintained for a period of time after the specified value is reached, and a dry test or a wet test is adopted.
If the test is carried out by a dry method, the position A of the welding line is fully coated by specially prepared soap water, and whether bubbles are blown up in the whole pressure maintaining process is checked.
If wet detection is adopted, the detection platform B needs to be set as a lifting platform, components below the detection platform B are placed in the water tank in a sealing mode, the lifting platform is lowered after the sealing cavity of the pipe fitting 30 to be detected is inflated, pressurized and inflated, so that the welding line A of the pipe fitting 30 to be detected is submerged in water, and whether bubbles emerge in the whole pressure maintaining process is checked.
The whole testing device plugs only the local pipe section of the pipe containing the tested part of the pipe without plugging from the end part of the pipe, so that the pipe is not limited by the length of the pipe, the problem that many pipes are difficult to detect due to overlong appearance structures is solved, and the occupied space of the testing device is small. The operation is simple, the automation degree is high, and the testing efficiency is improved.
Example two:
when the tightness test is carried out on the pipe fitting with the sharp bend, if the position of the bent pipe is close to the position to be detected, the detection device needs to be improved. The second embodiment is substantially the same as the first embodiment, and the only difference is that
As shown in fig. 4, the upper pressing plate 60 and the lower pressing plate 61 are separately arranged, the pressing assembly further includes a pull rod 64, the lower pressing plate 61 is sleeved on the supporting plate connecting member 67, the head of the pull rod 64 is located above the lower pressing plate 61, the rod of the pull rod 64 sequentially passes through the lower pressing plate 61, the lower sealing rubber pad 63 and the lower supporting plate 66, and the tail end of the pull rod 64 is fixedly connected with a power connection disc 70.
The supporting plate connecting piece 67 between the upper supporting plate 65 and the lower supporting plate 66 is arranged to be a connecting pipe fitting imitating the trend of a pipe fitting so as to adapt to the inner cavity of the pipe fitting to be tested, preferably, the tension piece is arranged to be a transition rod 691 and a pull rope 692, the transition rod 691 is fixedly connected with the upper pressure plate 60 and penetrates through the upper sealing rubber pad 62 and the upper supporting plate 65, one end of the pull rope 692 is fixedly connected with the transition rod 691, and the other end of the pull rope 692 is fixedly connected with the power. The power connection disc 70 is connected with a cylinder C or a hydraulic cylinder.
As shown in fig. 4, the method of operation for testing the pipe 50 with the tiger flange of the strainer is as follows:
inserting the lower support plate 66 of the detection device and the parts above into the pipe to make the pipe 5The position of the welding seam D of 0 is positioned in the placement area H of the part to be measured2Within the range, the cylinder C pulls the power connection disc 70, the upper pressing plate 60 is pulled by the pull rope 692 to enable the upper sealing rubber gasket 62 to be extruded and radially expanded by the upper pressing plate 60 and the upper supporting plate 65, meanwhile, the lower pressing plate 61 is pulled by the pull rod 64 to enable the lower sealing rubber gasket 63 to be extruded and radially expanded by the lower pressing plate 61 and the lower supporting plate 66, so that the inner cavity of the pipe section between the upper sealing rubber gasket 62 and the lower sealing rubber gasket 63 is sealed, the air inlet pipe 68 is used for inflating and pressurizing the sealing cavity of the pipe 50 to be tested, the pressure is maintained for a period of time after the specified value is reached, and dry testing or wet testing is adopted.
The present invention is not limited to the above embodiments, and all improvements made based on the concept, principle, structure and method of the present invention are all within the protection scope of the present invention.
Claims (7)
1. The air tightness detection device of the pipe fitting is arranged on the detection platform and is characterized in that,
the detection device comprises a bearing piece, an upper sealing rubber pad, a lower sealing rubber pad, a pressing assembly and an air inlet device, wherein the upper sealing rubber pad and the lower sealing rubber pad are respectively arranged on the bearing piece, a to-be-detected part placing area corresponding to a to-be-detected part of the pipe fitting is arranged between the upper sealing rubber pad and the lower sealing rubber pad, the air inlet device is communicated with the to-be-detected part placing area, and the pressing assembly enables the upper sealing rubber pad and the lower sealing rubber pad to expand radially.
2. The device for detecting the airtightness of a pipe according to claim 1, wherein said pressing assembly comprises an upper pressing plate and a lower pressing plate;
the supporting piece is provided with an upper supporting plate, a lower supporting plate and a supporting plate connecting piece, the supporting plate connecting piece is fixedly connected with the upper supporting plate and the lower supporting plate, and the direction of the supporting plate connecting piece is matched with the direction of the pipe to be measured;
the upper sealing rubber pad is positioned between the upper pressing plate and the upper supporting plate, the lower sealing rubber pad is positioned between the lower pressing plate and the lower supporting plate, and the upper supporting plate is connected with a tension piece.
3. The pipe airtightness detection apparatus according to claim 2, wherein the pressing assembly further comprises a connecting rod, the upper pressing plate is fixedly connected to the lower pressing plate through the connecting rod, and the connecting rod passes through the upper sealing rubber pad and the upper support plate in sequence;
the tension piece is a tension rod, one end of the tension rod is fixedly connected with the upper pressure plate, and the other end of the tension rod penetrates through and extends out of the supporting plate connecting piece.
4. The pipe airtightness detection apparatus according to claim 3, wherein an air cylinder or a hydraulic cylinder is connected to an end of the tension rod extending out of the pallet connection member.
5. The pipe fitting air tightness detection device according to claim 2, wherein the compression assembly further comprises a pull rod, the upper compression plate and the lower compression plate are separately arranged, the lower compression plate is sleeved on the supporting plate connecting piece, the head of the pull rod is positioned above the lower compression plate, the rod part of the pull rod sequentially penetrates through the lower compression plate, the lower sealing rubber pad and the lower supporting plate, and the tail end of the pull rod is fixedly connected with a power connection disc;
the tension piece comprises a transition rod and a pull rope, the transition rod is fixedly connected with the upper pressure plate and penetrates through the upper sealing rubber pad and the upper supporting plate, one end of the pull rope is fixedly connected with the transition rod, and the other end of the pull rope is fixedly connected with the power connecting disc.
6. The pipe fitting air tightness detection device according to claim 5, wherein an air cylinder or a hydraulic cylinder is connected to the power connection disc.
7. The pipe airtightness detection apparatus according to claim 3 or 5, wherein the air inlet means is provided inside the pallet connecting member, and an air outlet of the air inlet means opens on a peripheral wall of the pallet connecting member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021897465.9U CN213022161U (en) | 2020-09-02 | 2020-09-02 | Pipe fitting air tightness detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021897465.9U CN213022161U (en) | 2020-09-02 | 2020-09-02 | Pipe fitting air tightness detection device |
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| CN213022161U true CN213022161U (en) | 2021-04-20 |
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| CN202021897465.9U Active CN213022161U (en) | 2020-09-02 | 2020-09-02 | Pipe fitting air tightness detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390566A (en) * | 2021-06-21 | 2021-09-14 | 洛阳高华环保冷却科技有限公司 | Coil cooler gas tightness detection device |
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2020
- 2020-09-02 CN CN202021897465.9U patent/CN213022161U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390566A (en) * | 2021-06-21 | 2021-09-14 | 洛阳高华环保冷却科技有限公司 | Coil cooler gas tightness detection device |
| CN113390566B (en) * | 2021-06-21 | 2024-05-17 | 洛阳高华环保冷却科技有限公司 | Air tightness detection device for coil cooler |
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