CN210981695U - Sheet type storage bin airtightness detection device - Google Patents
Sheet type storage bin airtightness detection device Download PDFInfo
- Publication number
- CN210981695U CN210981695U CN201922288094.8U CN201922288094U CN210981695U CN 210981695 U CN210981695 U CN 210981695U CN 201922288094 U CN201922288094 U CN 201922288094U CN 210981695 U CN210981695 U CN 210981695U
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- hole
- pressure
- storage bin
- sheet type
- air compressor
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- 238000001514 detection method Methods 0.000 title claims description 25
- 238000007789 sealing Methods 0.000 claims abstract description 48
- 239000000428 dust Substances 0.000 claims abstract description 33
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 11
- 238000013461 design Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical class [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a device for detecting the sealing performance of a sheet type storage silo, which comprises a sheet type silo (1), wherein the top of the sheet type silo (1) is provided with a feeding hole (2) and a dust removing hole (3), and the bottom of the sheet type silo (1) is provided with a discharging hole (4); the feeding hole (2) is provided with a feeding hole sealing flange (10) through a bolt (11) and a nut (13), and the dust removing hole (3) is provided with a dust removing hole sealing flange (14) through the bolt (11) and the nut (13); the blanking hole (4) is connected with an air compressor (7) through a butterfly valve (6), the air compressor (7) is connected with a pressurization controller (9), a pressure release valve (8) is arranged on the air compressor (7), and a pressure gauge (5) is arranged between the blanking hole (4) and the butterfly valve (6). The utility model discloses can reduce because of safety, the quality hidden danger that piece formula storage silo seal does not lead to well, utilize existing equipment to pressurize, can realize that the seal detects.
Description
Technical Field
The utility model relates to a concrete mixes station construction technical field, specifically is a piece formula storage silo seal detection device.
Background
With the rapid development of the economy of China, the range of engineering infrastructure is continuously expanded. The concrete mixing station used in the current road and railway construction generally adopts a removal type station. Compared with two movable and fixed construction modes, the movable mixing station has the characteristics that the station can be flexibly constructed along with the movement of a construction site, the construction cost is reduced, and the supply quality of concrete is improved. But has the disadvantage that the large part must be disassembled for shipment.
The powder storage bin is used as the largest component in each system of the unit, and the volume of the powder storage bin is usually 200m3The above. There are now generally two ways to transport such bulk storage silos. AIs an integral shipment, but this mode of transportation is more costly and requires more road conditions and is less used. The other type is to decompose the sheet type storage bin into sheet type accessories and then transport the accessories, and the transportation mode sharply compresses the shipping volume, reduces the transportation cost and improves the transportation efficiency, so that the field use is more.
Although the economy and operability of the station building process are improved, the sheet type storage bin is easy to damp powder in the tank body due to the fact that the number of sheets is large, and the factors such as long joints need to be assembled in the assembling process, so that potential safety hazards and potential quality hazards such as pipe blockage, material leakage and raw material deterioration are caused.
At the present stage, a detection procedure for the tightness of the sheet type storage bin is not provided, and in order to reduce potential safety hazards and potential quality hazards caused by poor tightness of the sheet type storage bin, the tightness detection procedure is added after the assembly is completed, and therefore, the tightness detection device for the sheet type storage bin is provided.
Disclosure of Invention
The utility model aims at solving the above problems, and provides a piece formula storage silo seal detection device.
The utility model discloses an adopt following technical scheme to realize:
the tightness detection device for the sheet silo comprises a sheet silo, wherein a feeding hole and a dust removal hole are formed in the top of the sheet silo, and a discharging hole is formed in the bottom of the sheet silo; the feeding hole is provided with a feeding hole sealing flange through a bolt and a nut, and the dust removing hole is provided with a dust removing hole sealing flange through a bolt and a nut; the blanking hole is connected with an air compressor through a butterfly valve, the air compressor is connected with a pressurization controller, a pressure release valve is arranged on the air compressor, and a pressure gauge is arranged between the blanking hole and the butterfly valve.
When the sealing device is used, the feeding hole sealing device is connected with the feeding hole through the feeding hole sealing flange and used for sealing the feeding hole. The dust removal hole sealing device is connected with the dust removal hole through the dust removal hole sealing flange and used for sealing the dust removal hole. The pressurizing device is connected with the pressure detection device through a butterfly valve and used for sealing the discharging hole and pressurizing from the discharging hole. The pressure detection device is connected with the blanking hole through a flange and used for sealing the blanking hole and measuring pressure from the blanking hole. The pressurizing device comprises a pressurizing controller, an air compressor, a butterfly valve and a pressure gauge and is used for controlling the pressurizing and the pressure stabilizing of the device and realizing the quantitative inflation function. A pressure gauge in the pressurizing device also belongs to the pressure detection device and is used for collecting and monitoring test data.
The detection method implemented in the device for detecting the sealing property of the sheet storage bin is as follows: inflating and pressurizing the sheet silo through an air compressor; the compressed air is pumped into the assembled plate silo at constant design pressure; the sheet silo is enabled to reach a preset air pressure value I, and standing time is set to be I; continuously pumping compressed air at a constant design pressure to enable the sheet silo to reach a preset air pressure value II and standing for a second time; continuously pumping compressed air at a constant design pressure to enable the sheet silo to reach a preset air pressure value III, and standing for a time III; monitoring the air pressure change condition in the storage bin through a pressure gauge, and if the air pressure value is not changed, indicating that the tightness of the storage bin meets the requirement (the tightness is good); if the air pressure value is reduced, the tightness of the storage bin is not qualified (the tightness is poor), if the tightness of the storage bin is poor, the foaming solution is uniformly coated on all joints of the sheet silo and the tightness detection device, whether bubbles are generated or not is observed, and an air leakage part (the tightness is poor) is determined. After the load holding stage is finished, opening an exhaust valve on the air compressor, slowly opening a butterfly valve, constantly observing a pressure gauge, closing the butterfly valve when the pressure in the plate storage bin reaches a preset pressure value II, standing for a second time, and re-opening the butterfly valve if the numerical value of the pressure gauge does not fluctuate greatly; the pressure gauge is observed constantly, when the pressure in the sheet type storage bin reaches a preset pressure value I, the air compressor is closed, the standing time I is prolonged, if the numerical value of the pressure gauge does not fluctuate greatly, the butterfly valve is opened again until the pressure in the storage bin becomes normal pressure.
The utility model relates to a rationally, filled the blank that piece formula storage silo seal detected, perfect the link of checking and accepting of building a station, increased safety, quality assurance coefficient.
The utility model relates to a rationally, can reduce because of safety, the quality hidden danger that piece formula storage silo seal does not lead to well, utilize existing equipment to pressurize, can realize that the seal detects, have fine practical application and worth.
Drawings
Fig. 1 shows a schematic overview of the tightness detection device.
Fig. 2 shows a schematic view of the feed hole seal.
Fig. 2a shows a schematic view of a feed hole sealing flange.
Fig. 3 shows a schematic view of the dust hole seal.
Fig. 3a shows a schematic view of a dust hole sealing flange.
FIG. 4 is a schematic view of a pressurizing and detecting apparatus.
FIG. 5 shows a "time-pressure diagram" of the detection process.
In the figure: 1-sheet silo (storage silo), 2-feeding hole, 3-dedusting hole, 4-discharging hole, 5-pressure gauge, 6-butterfly valve, 7-air compressor, 8-pressure release valve, 9-pressurization controller, 10-feeding hole sealing flange, 11- (M8) bolt, 12-sealing gasket, 13- (M8) nut and 14-dedusting hole sealing flange.
Detailed Description
In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all embodiments of the present invention.
The utility model provides a slice storage silo seal detection device, wherein: the sheet type storage bin is a detected bin body, the feeding hole, the dust removal hole and the discharging hole are three opening positions of the bin body, and the three opening positions are sealed respectively; a pressure gauge is arranged in the blanking hole for detection; for the blanking hole, the function of pressurizing and gas conveying is additionally carried out; compressed air enters the detected bin body from the discharging hole, and the pressure change condition is monitored by the pressure gauge. The structure is shown in figure 1, and comprises a pressurizing device, a pressure detection device, a feeding hole sealing device and a dust removal hole sealing device, wherein the top of a sheet silo 1 is provided with a feeding hole 2 and a dust removal hole 3, and the bottom of the sheet silo 1 is provided with a discharging hole 4; the feeding hole 2 is provided with a feeding hole sealing flange 10 through a bolt 11 and a nut 13, and the dust removing hole 3 is provided with a dust removing hole sealing flange 14 through the bolt 11 and the nut 13; the blanking hole 4 is connected with an air compressor 7 through a butterfly valve 6, the air compressor 7 is connected with a pressurization controller 9, a pressure release valve 8 is arranged on the air compressor 7, and a pressure gauge 5 is arranged between the blanking hole 4 and the butterfly valve 6.
In the specific implementation, the storage bin to be detected is also provided with parts needing to be sealed, such as a pressure relief hole, a manhole and the like, and the parts are provided with corresponding sealing devices according to the installation requirements, so the invention is not within the content of the tightness detection device and the method. But as part of the full-closed link of the storage bin, the tightness of the storage bin still needs to be detected.
As shown in fig. 2 and 2a, the feeding hole sealing device is connected with the feeding hole through a feeding hole sealing flange and used for closing the feeding hole. And a sealing gasket 12 is used for sealing between the feeding hole sealing flange 10 and the feeding hole 2.
As shown in fig. 3 and 3a, the dust removing hole sealing device is connected with the dust removing hole through the dust removing hole sealing flange and is used for sealing the dust removing hole. The dust removing hole sealing flange 14 and the dust removing hole 3 are sealed by a sealing gasket 12.
The flange is connected with the feeding hole and the dust removing hole through bolts. The pipe diameters D of the feeding hole and the dust removal hole are respectively 30cm and 20cm, the pipe lengths are both 5D, the pressurizing pressure is 8 times of atmospheric pressure, and the constant pressure is 2 atmospheric pressures. Therefore, according to GB/T5783 2016 hexagon head bolt-full thread, the class A hexagon head bolt is selected, and the class A hexagon head bolt is an M8 coarse-tooth common bolt with the performance grade of 3.6 (international coarse teeth 60 degrees, M8, tooth pitch of 1.25mm, outer diameter of 7.96mm, inner diameter of 7.79mm and wire diameter of 7.02 mm).
And the bolt and the nut are sealed by a gasket. The gasket can be non-metal gasket such as rubber gasket, asbestos rubber gasket, flexible graphite gasket, polytetrafluoroethylene gasket and the like. This example uses rubber gaskets (standard parts) for economy.
When the bolts and the nuts are fastened, the six bolts are numbered as No. 1-6 in sequence in the clockwise direction, and then are screwed by hands until the bolts cannot be screwed in the sequence of 1-4-2-5-3-6 (diagonal screwing is adopted); and after each bolt is screwed down, checking whether the flanges are inclined, measuring the gap deviation value between the flanges, and symmetrically and alternately screwing the bolts by using a spanner according to the sequence of 1-4-2-5-3-6 until the required pretightening force is met.
After the bolts and the nuts are fastened, the flange joints are wiped to be clean, dry and free of dust, and then the high-performance silicone structural adhesive is uniformly coated on the flange joints. Standing for 24h, and performing subsequent detection after the structural adhesive is completely air-dried.
As shown in fig. 4, the pressurizing device (including a pressurizing controller, an air compressor, a butterfly valve, and a pressure gauge) is connected to the blanking hole through the butterfly valve, and is used for sealing the blanking hole, pressurizing the blanking hole, and measuring the pressure. Wherein, the air compressor adopts the stock equipment of the mixing station (economical efficiency).
During detection, the flanges with corresponding sizes are respectively in sealing connection with the feeding hole and the dust removal hole of the sheet storage bin, the feeding hole sealing device, the dust removal hole sealing device and the pressurizing device are in sealing connection, then the sheet storage bin starts to be inflated and pressurized through the pressurizing device, and compressed air is pumped into the assembled sheet storage bin at constant design pressure.
First the butterfly valve of the pressurizing device is opened. The air compressor starts to work under the control of the pressure controller, and compressed air is pumped into the assembled sheet storage bin at a constant design pressure of 0.8 MPa.
In the concrete implementation, the sheet type storage bin is a low-pressure container, the pressure relief piece in the original design is used for sealing the pressure relief hole, the threshold value of the pressure relief piece is 0.9MPa, and therefore the constant pressure of 0.8MPa is selected for pressurizing the storage bin.
In the pressurizing process, in order to protect the storage bin from stress deformation damage possibly caused by rapid pressurization, the segment type pressurizing method is adopted to pressurize the sheet type storage bin.
And (3) observing the pressure gauge constantly, closing the butterfly valve when the pressure in the sheet storage bin reaches a preset pressure value I (0.1 MPa), closing the air compressor, and standing for I (60 s). And if the numerical value of the pressure gauge does not fluctuate greatly, the air compressor is restarted, and the butterfly valve is opened.
And (4) observing the pressure gauge at any moment, closing the butterfly valve and the air compressor when the pressure in the plate storage bin reaches a preset pressure value II (0.15 MPa), and standing for a time II (60 s). And if the numerical value of the pressure gauge does not fluctuate greatly, the air compressor is restarted, and the butterfly valve is opened.
And (4) observing the pressure gauge at any moment, and closing the air compressor when the pressure in the sheet storage bin slightly exceeds a preset pressure value III (0.2 MPa). And immediately closing the butterfly valve when the pressure to be detected falls back to a preset air pressure value (0.2 MPa).
Monitoring the air pressure change condition in the storage bin through a pressure gauge; the load holding time III (10 min), if the air pressure value is not changed, the storage bin has good tightness; if the air pressure value becomes small (pressure difference is generated), the tightness of the storage bin is poor.
As shown in FIG. 5, the pressure gauge shows a time-varying curve of the pressure during the test.
If the storage bin is poor in tightness, preparing a solution from glycerol, an acrylate adhesive, water and a saturated sodium bicarbonate solution in a weight ratio of 1:1:4:4, uniformly coating the solution on all seams of the sheet storage bin and the tightness detection device, observing whether bubbles grow rapidly and are damaged while coating, and determining the part with poor tightness.
In the pressurizing stage (including standing and loading stage) in the detection process, if the pressure gauge falls off in a cliff-type manner, the detection is stopped; and (5) after the sealing condition of the storage bin is confirmed, re-detecting.
After the load holding stage is finished, in order to protect the storage bin from stress deformation damage possibly caused by rapid pressure reduction, the sectional pressure relief method is adopted to gradually relieve the pressure of the sheet type storage bin. And opening an exhaust valve on the air compressor, slowly opening the butterfly valve, observing the pressure gauge all the time, closing the butterfly valve when the pressure in the sheet storage bin reaches a preset pressure value II (0.15 MPa), and standing for II (60 s). And if the numerical value of the pressure gauge does not fluctuate greatly, the butterfly valve is opened again.
And (3) observing the pressure gauge all the time, and when the pressure in the sheet storage bin reaches a preset pressure value I (0.1 MPa), closing the air compressor and standing for I (60 s). And if the numerical value of the pressure gauge does not fluctuate greatly, the butterfly valve is opened again until the pressure in the storage bin is changed into normal pressure.
The above examples are only for illustrating the technical conception and the features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (2)
1. The tightness detection device for the sheet type storage silo comprises a sheet type silo (1), wherein a feeding hole (2) and a dust removal hole (3) are formed in the top of the sheet type silo (1), and a discharging hole (4) is formed in the bottom of the sheet type silo (1); the method is characterized in that: the feeding hole (2) is provided with a feeding hole sealing flange (10) through a bolt (11) and a nut (13), and the dust removing hole (3) is provided with a dust removing hole sealing flange (14) through the bolt (11) and the nut (13); the blanking hole (4) is connected with an air compressor (7) through a butterfly valve (6), the air compressor (7) is connected with a pressurization controller (9), a pressure release valve (8) is arranged on the air compressor (7), and a pressure gauge (5) is arranged between the blanking hole (4) and the butterfly valve (6).
2. The device for detecting the tightness of the sheet storage bin according to claim 1, wherein: the feeding hole sealing flange (10) and the feeding hole (2) are sealed by a sealing gasket (12); the dust removal hole sealing flange (14) and the dust removal hole (3) are sealed by a sealing gasket (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922288094.8U CN210981695U (en) | 2019-12-19 | 2019-12-19 | Sheet type storage bin airtightness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922288094.8U CN210981695U (en) | 2019-12-19 | 2019-12-19 | Sheet type storage bin airtightness detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210981695U true CN210981695U (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922288094.8U Expired - Fee Related CN210981695U (en) | 2019-12-19 | 2019-12-19 | Sheet type storage bin airtightness detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210981695U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110926732A (en) * | 2019-12-19 | 2020-03-27 | 中铁六局集团太原铁路建设有限公司 | Device and method for detecting airtightness of sheet type storage bin |
-
2019
- 2019-12-19 CN CN201922288094.8U patent/CN210981695U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110926732A (en) * | 2019-12-19 | 2020-03-27 | 中铁六局集团太原铁路建设有限公司 | Device and method for detecting airtightness of sheet type storage bin |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200710 |
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| CF01 | Termination of patent right due to non-payment of annual fee |