CN114112237B - Metal corrugated pipe load life testing device and implementation method thereof - Google Patents
Metal corrugated pipe load life testing device and implementation method thereof Download PDFInfo
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- CN114112237B CN114112237B CN202111368365.6A CN202111368365A CN114112237B CN 114112237 B CN114112237 B CN 114112237B CN 202111368365 A CN202111368365 A CN 202111368365A CN 114112237 B CN114112237 B CN 114112237B
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- air inlet
- electromagnetic valve
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- load life
- pipe
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- 238000012360 testing method Methods 0.000 title claims abstract description 66
- 239000002184 metal Substances 0.000 title claims abstract description 53
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 7
- 230000008602 contraction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
Abstract
The invention discloses a metal bellows load life testing device, which comprises a mounting seat, wherein a bottom plate of the mounting seat is provided with a testing seat, an air inlet pipe and an air outlet pipe are respectively connected to the testing seat, the other end of the air inlet pipe is connected with an air source, an air inlet electromagnetic valve is arranged on the air inlet pipe, an air outlet electromagnetic valve is arranged on the air outlet pipe, a pressing plate is arranged above the testing seat and is in sliding connection with a top plate of the mounting seat through a guide rod, a spring is arranged on the guide rod, and the air outlet electromagnetic valve and the air inlet electromagnetic valve are respectively connected with a PLC (programmable logic controller) through signals; the invention also discloses an implementation method of the metal bellows load life test device. The invention realizes the expansion and compression of the metal bellows by controlling the on-off of the air inlet electromagnetic valve and the air outlet electromagnetic valve and the cooperation of the pressing plate through the PLC controller, thereby realizing the test of the load life of the metal bellows.
Description
Technical Field
The invention belongs to the technical field of metal corrugated pipe life test, and particularly relates to a metal corrugated pipe load life test device and an implementation method thereof.
Background
The metal corrugated pipe is a tubular elastic sensitive element formed by connecting foldable corrugated sheets along the folding and stretching directions, is widely applied to instruments and meters, and is mainly used as a measuring element of a pressure measuring instrument to convert pressure into displacement or force, has thinner pipe wall and higher sensitivity, has a measuring range of tens of Pa to tens of megaPa, has a fixed open end and a free sealing end, and increases elasticity by using an auxiliary spiral spring or reed.
The metal bellows need test its load life before dispatching from the factory, and current testing arrangement makes the metal bellows reciprocating motion realize the test to its load life through the form that the motor drove the eccentric wheel pivoted, has device use cost high, and equipment loss is big to lead to the problem that metal bellows load life test cost is high.
Disclosure of Invention
The invention aims to provide a metal corrugated pipe load life testing device which aims to solve the problems in the background technology. The metal corrugated pipe load life testing device provided by the invention has the characteristics of simple structure and low use cost.
The invention further aims to provide an implementation method of the metal bellows load life test device.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a metal bellows load life-span testing arrangement, including the mount pad, be equipped with the test seat on the bottom plate of mount pad, be connected with intake pipe and blast pipe on the test seat respectively, wherein, the other end and the air supply of intake pipe are connected, are equipped with the solenoid valve that admits air in the intake pipe, are equipped with the exhaust solenoid valve on the blast pipe, and the top of test seat is equipped with the clamp plate, and the clamp plate passes through the roof sliding connection of guide bar and mount pad, is equipped with the spring on the guide bar, and the spring is located the roof top or the below of mount pad, and exhaust solenoid valve and intake solenoid valve respectively with PLC controller signal connection.
In order to limit the upper end of the spring, further, the upper end of the guide rod is provided with a limiting block.
In order to charge air through the air inlet pipe and exhaust through the exhaust pipe, further, the inside of the test seat is provided with an air passage, the air inlet pipe is connected with the air inlet end of the air passage, and the exhaust pipe is connected with the air outlet end of the air passage.
In order to be used for placing the metal bellows to be tested, further, a plurality of placing seats communicated with the air passage are arranged above the testing seat.
In order to realize the control of the flexible volume of sample product, further, still be connected through spacing subassembly between the roof of clamp plate and mount pad, spacing subassembly includes the gag lever post, and gag lever post and the roof sliding connection of mount pad, the bottom and the clamp plate of gag lever post are connected, are equipped with down the stop collar on the lower extreme of gag lever post, are equipped with the stop collar on the upper end of gag lever post, wherein, the lower stop collar is located the below of mount pad roof, goes up the top that the stop collar is located the mount pad roof.
In order to enable the limiting rod to slide with the top plate of the mounting seat, the limiting assembly further comprises a copper sleeve, the copper sleeve is arranged on the limiting rod, and the copper sleeve is connected with the top plate of the mounting seat.
In order to detect the tightness of the metal corrugated pipe, a pressure sensor is arranged between the air inlet electromagnetic valve and the test seat on the air inlet pipe, and the pressure sensor is in signal connection with the PLC.
In order to prevent the excessive pressure from influencing the detection result of the product and keep the stability of the detection pressure, a ball valve is further arranged on the air inlet end side of the air inlet electromagnetic valve on the air inlet pipe. The air inlet pipe is provided with a pressure reducing valve at the air inlet end side of the ball valve.
In the invention, the implementation method of the metal bellows load life test device comprises the following steps:
firstly, placing a metal corrugated pipe to be tested in a placing seat on a test seat, opening a ball valve, and starting equipment;
Secondly, the air inlet electromagnetic valve is opened, the air outlet electromagnetic valve is in a closed state, the air source charges air into the test seat through the air inlet pipe, so that the metal corrugated pipe stretches, and the pressing plate is pushed upwards;
Thirdly, after the inflation is finished, the air inlet electromagnetic valve is closed, the pressure sensor transmits the pressure value in the product to the PLC to judge whether the pressure value reaches the set pressure value, if so, differential pressure analysis is carried out in the pressure maintaining time, and if so, effective counting is judged, the air outlet electromagnetic valve is opened, and the pressure plate downwards compresses the metal corrugated pipe under the action of gravity and a spring until the air outlet is finished, so that one test action is completed;
and fourthly, repeating the second step and the third step for a set number of times to finish the load life test action of the metal corrugated pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. The invention realizes the expansion and compression of the metal bellows by controlling the on-off of the air inlet electromagnetic valve and the air outlet electromagnetic valve and the cooperation of the pressing plate through the PLC controller, thereby realizing the test of the load life of the metal bellows, having the characteristics of simple structure and low equipment loss, and having the effect of low use and maintenance cost;
2. According to the invention, through the arrangement of the limiting assembly, the compression displacement of the product is controlled by adjusting the upper limiting sleeve, and the stretching displacement of the product is controlled by adjusting the lower limiting sleeve, so that the control of the expansion and contraction amount of the sample product is realized;
3. The pressure sensor is arranged between the air inlet electromagnetic valve and the test seat on the air inlet pipe, and the tightness of the metal corrugated pipe can be detected by the pressure sensor in the air charging process;
4. according to the invention, the pressure reducing valve is arranged at the air inlet end, so that the influence of excessive pressure on the detection result of a product is prevented, and the stability of the detection pressure is maintained.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a test socket according to the present invention;
FIG. 3 is a schematic view of a spacing assembly according to the present invention;
FIG. 4 is a schematic diagram of the pipeline connection structure after the pressure sensor, the ball valve and the electromagnetic valve are arranged;
In the figure: 1. an air inlet pipe; 2. a test seat; 21. an airway; 22. a placement seat; 3. a mounting base; 4. a pressing plate; 5. a spring; 6. a limit component; 61. a limit rod; 62. a lower limit sleeve; 63. a copper sleeve; 64. an upper limit sleeve; 7. a guide rod; 8. a PLC controller; 9. an exhaust electromagnetic valve; 10. an exhaust pipe; 11. an air inlet electromagnetic valve; 12. a pressure sensor; 13. a ball valve; 14. a pressure reducing valve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-2, the present invention provides the following technical solutions: the utility model provides a metal bellows load life-span testing arrangement, including mount pad 3, be equipped with test seat 2 on the bottom plate of mount pad 3, be connected with intake pipe 1 and blast pipe 10 on the test seat 2 respectively, wherein, the other end and the air supply of intake pipe 1 are connected, the air supply is the air pump, be equipped with air inlet solenoid valve 11 on the intake pipe 1, be equipped with exhaust solenoid valve 9 on the blast pipe 10, air inlet solenoid valve 11 and exhaust solenoid valve 9 all select the 2W-025-08 type of relaxation, the top of test seat 2 is equipped with clamp plate 4, clamp plate 4 passes through guide bar 7 and the roof sliding connection of mount pad 3, be equipped with spring 5 on the guide bar 7, spring 5 is located the roof top or the below of mount pad 3, according to the elastic coefficient of product and experimental pressure selection spring 5's mounted position, this embodiment is preferably to set up in the roof top of mount pad 3, exhaust solenoid valve 9 and air inlet solenoid valve 11 are connected with PLC 8 signal respectively.
Through adopting above-mentioned technical scheme, the break-make and the clamp plate 4 cooperation of the break-make of the solenoid valve 11 that admits air and exhaust solenoid valve 9 are controlled through the PLC controller 8 realize stretching and compressing of metal bellows to the realization has simple structure, the characteristics that equipment loss is low to the realization has the effect that use and maintenance cost are low to metal bellows load life-span.
Specifically, the upper end of guide bar 7 is equipped with the stopper.
Through adopting above-mentioned technical scheme, guide bar 7 has set up four altogether, wherein is located being equipped with spring 5 on two guide bars 7 of diagonal angle, and the stopper is used for carrying out spacingly to spring 5's upper end.
Specifically, an air passage 21 is provided in the test seat 2, the air inlet pipe 1 is connected to an air inlet end of the air passage 21, and the air outlet pipe 10 is connected to an air outlet end of the air passage 21.
By adopting the above technical scheme, the air is inflated through the air inlet pipe 1, and the air is exhausted through the air outlet pipe 10.
Specifically, a plurality of placing seats 22 communicated with the air passage 21 are arranged above the test seat 2.
By adopting the above technical scheme, the placement seat 22 is used for placing the metal bellows to be tested.
Example 2
Referring to fig. 1 and 3, this embodiment is different from embodiment 1 in that: specifically, still be connected through spacing subassembly 6 between the roof of clamp plate 4 and mount pad 3, spacing subassembly 6 includes gag lever post 61, gag lever post 61 and the roof sliding connection of mount pad 3, the bottom of gag lever post 61 is connected with clamp plate 4, be equipped with down stop collar 62 on the lower extreme of gag lever post 61, be equipped with on the upper end of gag lever post 61 and go up stop collar 64, wherein, lower stop collar 62 is located the below of mount pad 3 roof, go up stop collar 64 and be located the top of mount pad 3 roof, go up stop collar 64 and lower stop collar 62 and all pass through screw thread engagement connection with gag lever post 61.
By adopting the technical scheme, the compression displacement of the product is controlled by adjusting the upper limit sleeve 64, and the tensile displacement of the product is controlled by adjusting the lower limit sleeve 62, so that the control of the expansion and contraction amount of the sample product is realized.
Specifically, the limiting assembly 6 further includes a copper sleeve 63, the copper sleeve 63 is disposed on the limiting rod 61, and the copper sleeve 63 is connected with the top plate of the mounting seat 3.
By adopting the above technical scheme, the limit rod 61 can slide with the top plate of the mounting seat 3.
Example 3
Referring to fig. 4, the present embodiment is different from embodiment 1 in that: specifically, a pressure sensor 12 is arranged between the air inlet electromagnetic valve 11 and the test seat 2 on the air inlet pipe 1, the pressure sensor 12 is in signal connection with the PLC 8, and the pressure sensor 12 is in the loose DP-102A type.
By adopting the above technical scheme, the tightness of the metal bellows can be detected by the pressure sensor 12 in the process of inflation.
Example 4
Referring to fig. 4, the present embodiment is different from embodiment 1 in that: specifically, a ball valve 13 is provided on the intake pipe 1 at the intake end side of the intake solenoid valve 11. The air inlet pipe 1 is provided with a pressure reducing valve 14 at the air inlet end side of the ball valve 13, and the pressure reducing valve 14 is BFC-2000 type of Adanese.
Before the equipment operates, the ball valve 13 is closed, the control pressure of the pressure reducing valve 14 is adjusted, so that the pressure is stable (the air inlet end air pressure is larger than the working air pressure); note that the pressure of the pressure reducing valve 14 must be exhausted for multiple times during adjustment, and then air is re-admitted, so that the pressure of the pressure reducing valve 14 is ensured to be normal.
By adopting the technical scheme, the detection result of the product is prevented from being influenced by excessive pressure, and the stability of the detection pressure is maintained.
Further, the implementation method of the metal bellows load life test device provided by the invention comprises the following steps:
firstly, placing a metal corrugated pipe to be tested in a placing seat 22 on a test seat 2, opening a ball valve 13, and starting equipment;
Secondly, the air inlet electromagnetic valve 11 is opened, the air outlet electromagnetic valve 9 is in a closed state, and the air source charges air into the test seat 2 through the air inlet pipe 1, so that the metal corrugated pipe stretches, and the pressing plate 4 is pushed upwards;
After the inflation is finished, the air inlet electromagnetic valve 11 is closed, the pressure sensor 12 transmits the pressure value in the product to the PLC 8 to judge whether the pressure value reaches the set pressure value, if so, the pressure difference analysis is carried out within the pressure maintaining time, and if so, the effective counting is judged, the air outlet electromagnetic valve 9 is opened, and the pressure plate 4 downwards compresses the metal corrugated pipe under the action of gravity and the spring 5 until the air outlet is finished, so that one test action is completed; when the pressure in the product can not reach the set value or the pressure difference exceeds the set value, the PLC 8 judges that the product leaks, the equipment is automatically stopped, and an alarm is sent out through the PLC 8 to remind a worker to process;
and fourthly, repeating the second step and the third step for a set number of times to finish the load life test action of the metal corrugated pipe.
In summary, the PLC 8 controls the on-off of the air inlet electromagnetic valve 11 and the air outlet electromagnetic valve 9 to be matched with the pressing plate 4 to realize the expansion and compression of the metal bellows, so that the test of the load life of the metal bellows is realized, and the metal bellows load life tester has the characteristics of simple structure and low equipment loss, thereby having the effect of low use and maintenance cost; according to the invention, through the arrangement of the limiting assembly 6, the compression displacement of the product is controlled by adjusting the upper limiting sleeve 64, and the stretching displacement of the product is controlled by adjusting the lower limiting sleeve 62, so that the control of the expansion and contraction amount of the sample product is realized; the pressure sensor 12 is arranged between the air inlet electromagnetic valve 11 and the test seat 2 on the air inlet pipe 1, and the tightness of the metal corrugated pipe can be detected by the pressure sensor 12 in the air charging process; the pressure reducing valve 14 is arranged at the air inlet end, so that the influence of excessive pressure on the detection result of a product is prevented, and the stability of the detection pressure is maintained.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a metal bellows load life-span testing arrangement, includes mount pad, its characterized in that: the bottom plate of the mounting seat is provided with a test seat, the test seat is respectively connected with an air inlet pipe and an air outlet pipe, the other end of the air inlet pipe is connected with an air source, an air inlet electromagnetic valve is arranged on the air inlet pipe, an air outlet electromagnetic valve is arranged on the air outlet pipe, a pressing plate is arranged above the test seat, the pressing plate is in sliding connection with the top plate of the mounting seat through a guide rod, a spring is arranged on the guide rod and positioned above or below the top plate of the mounting seat, and the air outlet electromagnetic valve and the air inlet electromagnetic valve are respectively connected with a PLC (programmable logic controller) through signals;
Still be connected through spacing subassembly between the roof of clamp plate and mount pad, spacing subassembly includes the gag lever post, and gag lever post and the roof sliding connection of mount pad, the bottom and the clamp plate of gag lever post are connected, are equipped with down the stop collar on the lower extreme of gag lever post, are equipped with the stop collar on the upper end of gag lever post, and wherein, the lower stop collar is located the below of mount pad roof, goes up the top that the stop collar is located the mount pad roof.
2. The metal bellows load life test apparatus of claim 1, wherein: and a limiting block is arranged at the upper end of the guide rod.
3. The metal bellows load life test apparatus of claim 1, wherein: the inside of test seat is equipped with the air flue, and the intake pipe is connected with the inlet end of air flue, and the blast pipe is connected with the end of giving vent to anger of air flue.
4. A metal bellows load life test apparatus according to claim 3, wherein: and a plurality of placing seats communicated with the air passage are arranged above the test seat.
5. The metal bellows load life test apparatus of claim 1, wherein: the limiting assembly further comprises a copper sleeve, the copper sleeve is arranged on the limiting rod, and the copper sleeve is connected with the top plate of the mounting seat.
6. The metal bellows load life test apparatus of claim 1, wherein: and a pressure sensor is arranged between the air inlet electromagnetic valve and the test seat on the air inlet pipe and is in signal connection with the PLC.
7. The metal bellows load life test apparatus of claim 1, wherein: and a ball valve is arranged on the air inlet end side of the air inlet pipe, which is positioned on the air inlet electromagnetic valve.
8. The metal bellows load life test apparatus of claim 7, wherein: and a pressure reducing valve is arranged on the air inlet end side of the ball valve on the air inlet pipe.
9. The method for realizing the metal bellows load life testing device according to any one of claims 1 to 8, comprising the steps of:
firstly, placing a metal corrugated pipe to be tested in a placing seat on a test seat, opening a ball valve, and starting equipment;
Secondly, the air inlet electromagnetic valve is opened, the air outlet electromagnetic valve is in a closed state, the air source charges air into the test seat through the air inlet pipe, so that the metal corrugated pipe stretches, and the pressing plate is pushed upwards;
Thirdly, after the inflation is finished, the air inlet electromagnetic valve is closed, the pressure sensor transmits the pressure value in the product to the PLC controller to judge whether the pressure value reaches the set pressure value, if so, differential pressure analysis is carried out in the pressure maintaining time, and if so, effective counting is judged, the air outlet electromagnetic valve is opened, the pressure plate downwards compresses the metal corrugated pipe to the set position under the action of gravity and a spring, and the air outlet is finished, so that one-time test action is completed;
and fourthly, repeating the second step and the third step for a set number of times to finish the load life test action of the metal corrugated pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111368365.6A CN114112237B (en) | 2021-11-18 | 2021-11-18 | Metal corrugated pipe load life testing device and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111368365.6A CN114112237B (en) | 2021-11-18 | 2021-11-18 | Metal corrugated pipe load life testing device and implementation method thereof |
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| Publication Number | Publication Date |
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| CN114112237A CN114112237A (en) | 2022-03-01 |
| CN114112237B true CN114112237B (en) | 2024-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111368365.6A Active CN114112237B (en) | 2021-11-18 | 2021-11-18 | Metal corrugated pipe load life testing device and implementation method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202110101U (en) * | 2011-06-17 | 2012-01-11 | 浙江万龙机械有限公司 | Corrugated pipe service life tester |
| CN103822778A (en) * | 2014-02-28 | 2014-05-28 | 浙江花园电子科技有限公司 | Corrugated pipe service life tester |
| CN105115668A (en) * | 2015-06-29 | 2015-12-02 | 重庆永高塑业发展有限公司 | PE corrugated pipe closed water test compression device |
| CN205228731U (en) * | 2015-12-14 | 2016-05-11 | 黄山市屯溪工程塑料厂 | Bellows quality detection device |
| CN207850614U (en) * | 2018-03-10 | 2018-09-11 | 丹东诚海机械制造有限公司 | A kind of device for detecting airtightness of corrugated tube |
| CN112444383A (en) * | 2020-12-15 | 2021-03-05 | 南京林业大学 | Test bed for measuring reliability of mechanical seal metal corrugated pipe |
| CN213091150U (en) * | 2020-09-29 | 2021-04-30 | 成都凯赛尔电子有限公司 | Bellows life-span detection device |
| CN113008545A (en) * | 2021-04-19 | 2021-06-22 | 陕西宝光集团有限公司 | Bellows life test device |
-
2021
- 2021-11-18 CN CN202111368365.6A patent/CN114112237B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202110101U (en) * | 2011-06-17 | 2012-01-11 | 浙江万龙机械有限公司 | Corrugated pipe service life tester |
| CN103822778A (en) * | 2014-02-28 | 2014-05-28 | 浙江花园电子科技有限公司 | Corrugated pipe service life tester |
| CN105115668A (en) * | 2015-06-29 | 2015-12-02 | 重庆永高塑业发展有限公司 | PE corrugated pipe closed water test compression device |
| CN205228731U (en) * | 2015-12-14 | 2016-05-11 | 黄山市屯溪工程塑料厂 | Bellows quality detection device |
| CN207850614U (en) * | 2018-03-10 | 2018-09-11 | 丹东诚海机械制造有限公司 | A kind of device for detecting airtightness of corrugated tube |
| CN213091150U (en) * | 2020-09-29 | 2021-04-30 | 成都凯赛尔电子有限公司 | Bellows life-span detection device |
| CN112444383A (en) * | 2020-12-15 | 2021-03-05 | 南京林业大学 | Test bed for measuring reliability of mechanical seal metal corrugated pipe |
| CN113008545A (en) * | 2021-04-19 | 2021-06-22 | 陕西宝光集团有限公司 | Bellows life test device |
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| CN114112237A (en) | 2022-03-01 |
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