CN214334145U - Airtight detection device of exhaust return bend - Google Patents
Airtight detection device of exhaust return bend Download PDFInfo
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- CN214334145U CN214334145U CN202120656337.3U CN202120656337U CN214334145U CN 214334145 U CN214334145 U CN 214334145U CN 202120656337 U CN202120656337 U CN 202120656337U CN 214334145 U CN214334145 U CN 214334145U
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Abstract
The utility model relates to an air tightness detection device for an exhaust elbow, which comprises a base, wherein a frame is arranged above the base; a sliding rail is arranged between the bottom of the rack and the base; a workbench is arranged on the frame; a first air cylinder is arranged on one side of the rack; a plurality of pairs of fixing columns which are symmetrical to each other in pairs are vertically arranged on the workbench; a heater is arranged in the rack below the workbench; fans are arranged on two sides of the workbench; the top end of the frame is provided with an extension part; a second cylinder is fixed above the extending part; a piston rod of the second cylinder is provided with a first sealing cover; a first air duct is arranged on one side of the frame; one end of the first air duct is provided with a liquid level pipe; one end of the liquid level pipe is provided with a second air duct; a second support frame is arranged below the second air duct; and a water tank is arranged on one side of the second support frame. The utility model discloses a change exhaust return bend heating and refrigerated gas, be transformed into the volume of liquid, can accurate detection department exhaust return bend gas tightness.
Description
Technical Field
The utility model relates to an exhaust return bend processing technology field, especially a diesel engine exhaust return bend airtight detection device.
Background
The exhaust pipe is one of main accessories of a diesel engine, the engine exhaust elbow is formed by integrally forming a part of straight cylindrical pipe and a part of arc-shaped elbow, and the exhaust elbow is used for realizing exhaust, so that the requirement on the air tightness of the exhaust elbow is high, and the air tightness detection is needed when the exhaust elbow is produced. In the prior art, the air tightness detection is generally carried out by blowing air into the exhaust elbow, the test precision is low, and the production efficiency is low.
Accordingly, it is desirable to provide an apparatus for accurately detecting the airtightness of an exhaust elbow
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an airtight detection device of exhaust return bend can accurately detect the gas tightness of exhaust return bend.
In order to achieve the purpose of the utility model, the air tightness detection device for the exhaust elbow is provided, which comprises a base,
a rack is arranged above the base; a sliding rail is arranged between the bottom of the rack and the base; the rack is connected with the slide rail in a sliding manner; a workbench is arranged on the frame; the workbench is used for placing the exhaust elbow body to be detected; a first air cylinder is arranged on one side of the rack, which is far away from the workbench; the first air cylinder is placed on the base; a piston rod of the first cylinder is connected with the rack; a plurality of pairs of fixing columns which are symmetrical to each other in pairs are vertically arranged on the workbench; the distance between the two mutually symmetrical fixing columns is equal to the outer diameter of the exhaust elbow, one pair of fixing columns is arranged on one side of the orifice of the straight pipe of the exhaust elbow body, and the other pair of fixing columns is arranged at the elbow of the exhaust elbow body; a heater is arranged in the rack below the workbench; fans are arranged on two sides of the workbench;
the top end of the frame is provided with an extension part; the extension part is provided with a through hole; the through hole is arranged right above the elbow pipe orifice of the exhaust elbow pipe body; a second cylinder is fixed above the extending part; a piston rod of the second cylinder penetrates through the through hole; a first sealing cover is arranged at the top end of a piston rod of the second cylinder;
a first support frame is arranged on one side of the rack; the first support frame is arranged on one side of the workbench; a first air duct is fixed on the first support frame; a second sealing cover is fixed at one end of the first air duct close to the rack; the second sealing cover and the straight pipe orifice of the exhaust bent pipe body are in the same horizontal position; an air guide hole is formed in the middle of the second sealing cover and communicated with the first air guide pipe; a liquid level pipe is arranged at one end of the first air duct far away from the rack; a second air duct is arranged at one end of the liquid level tube, which is far away from the first air duct; a second support frame is arranged below the second air duct; a water tank is arranged on one side, away from the liquid level pipe, of the second support frame; one end of the second air duct is placed in the water tank.
The working principle is as follows: an air tightness detection device for an exhaust elbow is characterized in that the exhaust elbow is placed between fixed columns of a workbench, the elbow part is placed upwards, then a first air cylinder is opened to push a rack to move along a slide rail, so that a second sealing cover seals the orifice of a straight pipe of an exhaust elbow body, meanwhile, the second cylinder is opened, the piston rod of the second cylinder pushes the first sealing cover to seal the exhaust elbow body, the exhaust elbow is sealed, then the heater is opened, the gas expands under heat, the gas passes through the gas guide hole, the first gas guide pipe, the liquid level pipe and the second gas guide pipe and finally enters the water tank, after a certain time, the heater is closed, the fan is started, the exhaust bent pipe is cooled, the gas is contracted, because atmospheric pressure, during water refluence to the second air duct in the water tank flows into the liquid level pipe, through the reading of observing the liquid level pipe, can judge the gas tightness size of blast pipe.
Preferably, the first sealing cover and the second sealing cover are both provided with sealing rings.
Preferably, the first support frame and the second support frame are at the same horizontal position.
Preferably, a scale rack is arranged on the liquid level pipe.
The utility model relates to an airtight detection device of exhaust return bend compares with prior art and has following advantage:
(1) the air density of the exhaust elbow can be accurately detected by changing the heated and cooled gas of the exhaust elbow into the volume of liquid;
(2) the design is simple, easy to use, and low in manufacturing cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a top view of the present invention;
fig. 4 is a schematic view in operation.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in the figure, the air tightness detection device for the exhaust elbow comprises a base 1,
a frame 21 is arranged above the base 1; a slide rail 22 is arranged between the bottom of the frame 21 and the base 1; the rack 21 is connected with the slide rail 22 in a sliding manner; a workbench is arranged on the frame 21; the workbench is used for placing the exhaust elbow body 4 to be detected; a first air cylinder 23 is arranged on one side of the frame 21 away from the workbench; the first air cylinder 23 is placed on the base 1, a piston rod of the first air cylinder 23 is connected with the rack 21, and the first air cylinder 23 is used for pushing the rack 21; a plurality of pairs of mutually symmetrical fixing columns 24 are vertically arranged on the workbench; the distance between the two mutually symmetrical fixing posts 24 is equal to the outer diameter of the exhaust elbow, wherein one pair of the fixing posts 24 is arranged on the flange end side of the exhaust elbow body 4, and the other pair of the fixing posts 24 is arranged at the elbow of the exhaust elbow body 4; a heater 25 is arranged in the rack 21 below the workbench, and the exhaust bent pipe can be heated through the heater 25; fans 26 are arranged on two sides of the workbench, and the fans 26 are used for cooling the heated exhaust bent pipe;
the top end of the frame 21 is provided with an extension part 27; the extension part 27 is provided with a through hole; the through hole is arranged right above the elbow pipe orifice of the exhaust elbow pipe body 4; a second cylinder 28 is fixed above the extension part 27; the piston rod of the second cylinder 28 passes through the through hole; the top end of the piston rod of the second cylinder 28 is provided with a first sealing cover 29, and the first sealing cover 29 can be covered on the elbow pipe orifice of the exhaust elbow body 4 by opening the second cylinder 28, so that the elbow pipe orifice is sealed;
a first support frame 31 is arranged on one side of the machine frame 21; the first support frame 31 is arranged on one side of the workbench; a first air duct 32 is fixed on the first support frame 31; a second sealing cover 33 is fixed at one end of the first air duct 32 close to the frame 21; the second sealing cover 33 and the straight pipe orifice of the exhaust elbow body 4 are in the same horizontal position, and the frame 21 is pushed by the first air cylinder 23, so that the straight pipe orifice of the exhaust elbow body 4 can be tightly contacted with the second sealing cover 33, and the sealing of the straight pipe orifice is realized; an air guide hole is formed in the middle of the second sealing cover 33 and communicated with the first air guide pipe 32; a liquid level pipe 34 is arranged at one end of the first air duct 32, which is far away from the frame 21; a second air duct 35 is arranged at one end of the liquid level pipe 34 far away from the first air duct 32; a second support frame 36 is arranged below the second air duct 35; a water tank 37 is arranged on one side of the second support frame 36 away from the liquid level pipe 34; one end of the second air duct 35 is placed in the water tank 37, and the air discharged after the exhaust elbow body 4 is heated is introduced into the first air duct 32, the liquid level pipe 34 and the second air duct 35 through the second sealing cover 33 and finally discharged into the water tank 37.
In this embodiment, the first sealing cover 29 and the second sealing cover 33 are both provided with sealing rings, so as to improve the sealing effect.
In this embodiment, the first support frame 31 and the second support frame 36 are located at the same horizontal position, which facilitates air guiding of the air duct and improves the detection effect.
In this embodiment, be equipped with the scale rack on the liquid level pipe, the degree of the bent pipe gas leakage of exhaust is conveniently and accurately observed.
The utility model relates to an airtight detection device of exhaust elbow, when using, at first place the exhaust elbow between the fixed column 24 of workstation, place elbow portion up, later open first cylinder 23, promote frame 21 and remove along slide rail 22, make second sealed lid 33 seal the straight tube mouth of pipe of exhaust elbow body 4, meanwhile, open second cylinder 28, the piston rod of second cylinder 28 promotes first sealed lid 29 and seals exhaust elbow body 4, so far accomplish the sealing of exhaust elbow, later open heater 25, gaseous thermal expansion, gaseous process air guide hole, first air duct 32, liquid level pipe 34 and second air duct 35, at last let in water tank 37, after a certain time, close heater 25, open fan 26, cool off the exhaust elbow, gaseous contraction, because atmospheric pressure, water among the water tank 37 flows backwards to in the second air duct 35, the air-tightness of the exhaust pipe can be judged by observing the reading of the liquid level pipe 34 when the air flows into the liquid level pipe 34.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention, and such equivalents and substitutions are intended to be included within the scope of the invention as defined by the appended claims.
Claims (4)
1. An air tightness detection device for an exhaust elbow is characterized by comprising a base,
a rack is arranged above the base; a sliding rail is arranged between the bottom of the rack and the base; the rack is connected with the slide rail in a sliding manner; a workbench is arranged on the frame; the workbench is used for placing the exhaust elbow body to be detected; a first air cylinder is arranged on one side of the rack, which is far away from the workbench; the first air cylinder is placed on the base; a piston rod of the first cylinder is connected with the rack; a plurality of pairs of fixing columns which are symmetrical to each other in pairs are vertically arranged on the workbench; the distance between the two mutually symmetrical fixing columns is equal to the outer diameter of the exhaust elbow, one pair of fixing columns is arranged on one side of the orifice of the straight pipe of the exhaust elbow body, and the other pair of fixing columns is arranged at the elbow of the exhaust elbow body; a heater is arranged in the rack below the workbench; fans are arranged on two sides of the workbench;
the top end of the frame is provided with an extension part; the extension part is provided with a through hole; the through hole is arranged right above the elbow pipe orifice of the exhaust elbow pipe body; a second cylinder is fixed above the extending part; a piston rod of the second cylinder penetrates through the through hole; a first sealing cover is arranged at the top end of a piston rod of the second cylinder;
a first support frame is arranged on one side of the workbench; a first air duct is fixed on the first support frame; a second sealing cover is fixed at one end of the first air duct close to the rack; the second sealing cover and the straight pipe orifice of the exhaust bent pipe body are in the same horizontal position; an air guide hole is formed in the middle of the second sealing cover and communicated with the first air guide pipe; a liquid level pipe is arranged at one end of the first air duct far away from the rack; a second air duct is arranged at one end of the liquid level tube, which is far away from the first air duct; a second support frame is arranged below the second air duct; a water tank is arranged on one side, away from the liquid level pipe, of the second support frame; one end of the second air duct is placed in the water tank.
2. The air tightness detecting device for the exhaust elbow according to claim 1, wherein the first sealing cover and the second sealing cover are provided with sealing rings.
3. The apparatus according to claim 2, wherein the first support frame and the second support frame are at the same horizontal position.
4. The air tightness detection device of the exhaust elbow pipe according to any one of claims 1 or 3, wherein a scale rack is arranged on the liquid level pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120656337.3U CN214334145U (en) | 2021-03-31 | 2021-03-31 | Airtight detection device of exhaust return bend |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120656337.3U CN214334145U (en) | 2021-03-31 | 2021-03-31 | Airtight detection device of exhaust return bend |
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| Publication Number | Publication Date |
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| CN214334145U true CN214334145U (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120656337.3U Active CN214334145U (en) | 2021-03-31 | 2021-03-31 | Airtight detection device of exhaust return bend |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486101A (en) * | 2022-02-14 | 2022-05-13 | 淄博市特种设备检验研究院 | Pressure pipeline detection device convenient to operate and using method thereof |
-
2021
- 2021-03-31 CN CN202120656337.3U patent/CN214334145U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486101A (en) * | 2022-02-14 | 2022-05-13 | 淄博市特种设备检验研究院 | Pressure pipeline detection device convenient to operate and using method thereof |
| CN114486101B (en) * | 2022-02-14 | 2023-12-26 | 大唐长春热力有限责任公司 | Pressure pipeline detection device convenient to operate and application method thereof |
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