CN110411684B - Hose assembly pressure test flat seal test assembly and test device - Google Patents
Hose assembly pressure test flat seal test assembly and test device Download PDFInfo
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- CN110411684B CN110411684B CN201910649823.XA CN201910649823A CN110411684B CN 110411684 B CN110411684 B CN 110411684B CN 201910649823 A CN201910649823 A CN 201910649823A CN 110411684 B CN110411684 B CN 110411684B
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- 238000012360 testing method Methods 0.000 title claims abstract description 98
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 239000011248 coating agent Substances 0.000 claims abstract description 33
- 238000000576 coating method Methods 0.000 claims abstract description 33
- 229920001971 elastomer Polymers 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 23
- 239000005060 rubber Substances 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims description 18
- 239000007769 metal material Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000012856 packing Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- 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
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
本发明公开了一种软管总成试压平面密封测试组件及测试装置，组件主要包括移动连接头、固定堵头和夹紧机构，装置还包括控制柜，测试柜和压缩空气增压装置；所述移动连接头包括内部设有通孔的连接基座，连接基座的密封端依次设有橡胶垫圈、涂覆垫圈和带通孔的固定螺钉；所述固定堵头包括堵头基座，堵头基座的密封端依次设有橡胶垫圈、涂覆垫圈和无孔固定螺钉；所述夹紧机构用于将移动连接头和固定堵头紧密夹持在待测试工件金属接头的两端，然后通过增压，使管路压力达到标准要求，并通过观察回路中压力下降情况来判断工件是否达标。本发明可检测出制动软管总成的软管部分、金属与软管连接处、金属接头工作密封面等异常问题，以此提高产品质量。
The present invention discloses a hose assembly pressure test plane seal test component and test device, the component mainly includes a mobile connector, a fixed plug and a clamping mechanism, the device also includes a control cabinet, a test cabinet and a compressed air booster device; the mobile connector includes a connection base with a through hole inside, and the sealing end of the connection base is sequentially provided with a rubber gasket, a coating gasket and a fixing screw with a through hole; the fixed plug includes a plug base, and the sealing end of the plug base is sequentially provided with a rubber gasket, a coating gasket and a hole-free fixing screw; the clamping mechanism is used to tightly clamp the mobile connector and the fixed plug at both ends of the metal joint of the workpiece to be tested, and then through boosting, the pipeline pressure reaches the standard requirements, and the pressure drop in the circuit is observed to determine whether the workpiece meets the standard. The present invention can detect abnormal problems such as the hose part of the brake hose assembly, the connection between the metal and the hose, and the working sealing surface of the metal joint, thereby improving product quality.
Description
Technical Field
The invention relates to a plane seal for testing 100% pressure before delivery in the process of manufacturing a hose assembly, in particular to a plane seal testing assembly and a testing device for testing the pressure of the hose assembly.
Background
With the development of parts in the automotive industry, flat sealing forms are widely used in coupling forms of hose assembly parts for conveying pressure medium for vehicles with other automotive parts. For a rubber brake hose assembly for an automobile brake system, 100% pressure test is needed before manufacturing and leaving the factory, and the 100% pressure test process is very important. In the operation process, the whole brake hose assembly is guaranteed to bear a plurality of times of working pressure, and the sealing surface of the workpiece cannot be damaged after detection. In the past, a contact mode of a pure nonmetallic material (nylon, rubber and resin) and a sealing plane is adopted, so that leakage at a joint can be prevented, but a product with scratches on a sealing surface caused by the manufacturing process of a hose assembly cannot be detected.
Disclosure of Invention
The invention aims to provide a hose assembly pressure test plane sealing test assembly and a test device, which are used for solving the problem that the existing 100% pressure test device cannot identify abnormal products with scratches on a joint sealing plane, so that failure risks are caused by outflow factory control measures.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The utility model provides a hose assembly pressure test plane seals test subassembly, this test subassembly is including removing the connector, it is including the inside connection base that is equipped with the through-hole to remove the connector, connection base one end is the link, and the other end is the seal, the tip of seal is equipped with rubber packing ring, coating packing ring and the dead screw of taking the through-hole from inside to outside in proper order, rubber packing ring and coating packing ring pass through the dead screw to be connected at the tip of seal, and the inside through-hole of dead screw and connection base's inside through-hole are linked together.
The utility model provides a hose assembly pressure test plane seals test subassembly, this test subassembly includes fixed end cap, fixed end cap includes the end cap base, end cap base one end is the link, and the other end is the seal end, the tip of seal end is equipped with rubber packing ring, coating packing ring and aporate set screw outward in proper order from inside, rubber packing ring and coating packing ring pass through aporate set screw and connect the tip at the seal end.
The utility model provides a hose assembly pressure test plane seals test subassembly, includes foretell removal connector and fixed end cap, removal connector and the coaxial setting of fixed end cap and mutually support and use, and the sealed end of both seals respectively at the both ends that await measuring work piece metal joint.
Further, the test assembly further comprises a clamping mechanism, wherein the clamping mechanism is used for tightly clamping the movable connector and the fixed plug at two ends of the metal connector of the workpiece to be tested.
Still further, clamping mechanism includes cylinder, fixed bolster and removal slider, the link fixed connection of fixed end cap is on the fixed bolster, the link and the removal slider fixed connection of removal connector, the inside of removing the slider is equipped with the through-hole to it sets up on the piston rod top of cylinder, be equipped with the air inlet on the piston rod of cylinder and inside be equipped with the through-hole that admits air, the through-hole that admits air on the piston rod and remove the inside through-hole intercommunication of connector with removing the slider.
Further, the distance between the cylinder and the fixed bracket is smaller than half of the maximum distance of the extension of the cylinder piston rod.
Furthermore, the connecting end of the connecting base and the plug base is a threaded end in a threaded connection mode.
Furthermore, the coating gasket consists of a non-metal material coating and a metal framework, wherein the coating is arranged on two planes of the gasket, and the thickness of the coating is controlled to be 0.01-0.06mm.
The utility model provides a hose assembly pressure test plane seals testing arrangement, this testing arrangement includes foretell removal connector, fixed end cap and clamping mechanism, still includes the switch board simultaneously, the test cabinet, compressed air supercharging device connects the inlet opening on cylinder and the piston rod respectively through filling the pipeline, the switch board is used for controlling cylinder motion and pressure testing pressure size to pressure in measuring closed circuit through pressure sensor is in order to judge the sealing performance of waiting to test the work piece.
The test cabinet is provided with a station disqualification display lamp and a station qualification display lamp, the charging and discharging pipeline comprises a clamping gas charging and discharging pipeline and a test pressure charging and discharging pipeline, and a clamping system gas regulating valve is arranged on the clamping gas charging and discharging pipeline.
The invention has the beneficial effects that 100% pressure of the brake hose assembly can be effectively realized through a test, and the defect that the metal joint sealing surface of the brake hose is scratched to easily cause loading leakage is detected, so that abnormal product outflow of the joint sealing surface is effectively controlled.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural view of a mobile connector.
Fig. 2 is a schematic structural view of the fixed plug.
Fig. 3 is a schematic diagram of the cooperation of the movable connector, the fixed plug and the clamping mechanism.
Fig. 4 is a schematic diagram of a workpiece to be tested.
Fig. 5 is a schematic diagram of a pressure test plane seal test.
The device is characterized by comprising a 1-movable connector, a 101-connecting base, a 102-band-pass fixing screw, a 2-fixed plug, a 201-plug base, a 202-hole-free fixing screw, a 3-cylinder, a 4-movable sliding block, a 5-piston rod, a 6-fixed support, a 7-workpiece metal connector to be tested, a 8-workpiece hose to be tested, a 9-bottom plate, a 10-control cabinet, a 11-compressed air supercharging device, a 12-test pressure charging and discharging pipeline, a 13-clamping gas charging and discharging pipeline, a 14-working button, a 15-emergency button, a 16-power switch, a 17-power supply display lamp, a 18-data display, a 19-clamping system gas regulating valve, a 20-station failure display lamp, a 21-station failure display lamp, a 22-rubber gasket, a 23-coating gasket, a 24-thread end and a 25-test cabinet.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
Embodiment one.
A hose assembly pressure test plane seal test assembly mainly comprises a movable connector 1 and a fixed plug 2.
As shown in fig. 1, a mobile connector 1, the mobile connector 1 includes a connection base 101 having a through hole therein, one end of the connection base 101 is a connection end, the other end is a sealing end, the end of the sealing end is sequentially provided with a rubber gasket 22, a coating gasket 23 and a fixing screw 102 with a through hole from inside to outside, the rubber gasket 22 and the coating gasket 23 are connected to the end of the sealing end through the fixing screw 102, and the internal through hole of the fixing screw 102 is communicated with the internal through hole of the connection base 101.
The movable connector is assembled, the rubber buffer gasket 22 is placed on the plane of the connector connecting base 101 in sequence, then the coating gasket 23 is placed, and finally the two gaskets are fixed on the base by the band-pass fixing screw 102, so that the gaskets are prevented from falling off.
As shown in fig. 2, a fixing plug 2 comprises a plug base 201, one end of the plug base 201 is a connecting end, the other end is a sealing end, a rubber gasket 22, a coating gasket 23 and a non-hole fixing screw 202 are sequentially arranged at the end of the sealing end from inside to outside, and the rubber gasket 22 and the coating gasket 23 are connected at the end of the sealing end through the non-hole fixing screw 202.
The assembly of the fixed plug is carried out by sequentially placing the rubber buffer gasket 22 on the plane of the plug connecting base, then placing the coating gasket 23, finally fixing the two gaskets on the base by using the non-porous fixing screw 202, and ensuring that the gaskets do not fall off
As shown in fig. 3, the test assembly further comprises a clamping mechanism, wherein the clamping mechanism is used for tightly clamping the movable connector and the fixed plug at two ends of the metal connector of the workpiece to be tested, and the pattern of the metal connector is shown in fig. 4. The clamping mechanism comprises a cylinder 3, a fixed support 6 and a movable slide block 4, wherein the connecting end of the fixed plug 2 is fixedly connected to the fixed support 6, the connecting end of the movable connector 1 is fixedly connected with the movable slide block 4, a through hole is formed in the movable slide block 4 and is arranged at the top end of a piston rod 5 of the cylinder 3, an air inlet and an air inlet through hole are formed in the piston rod 5 of the cylinder, and the air inlet through hole in the piston rod is communicated with the through holes in the movable slide block 4 and the movable connector 1.
In the embodiment, the air cylinder 3 and the fixed bracket 6 are arranged on the bottom plate 9 and are fixedly connected through bolts, and the seat plate 9 is fixed on the test cabinet through bolts. The distance between the air cylinder 3 and the fixed bracket 6 is smaller than half of the maximum distance of the extension of the air cylinder piston rod 5, and the movable sliding block 4 arranged at the top end of the piston rod 5 ensures the linear movement. The threaded end of the movable connector 1 is connected to the movable slider 4 through threads. The movable slider 4 has a through hole to allow the movable connector 1 to be connected to a pressure gas line. The threaded end of the fixed plug 2 is arranged on the fixed bracket 6. It is required to ensure coaxiality after the movable connector 1 and the fixed plug 2 are installed. When a workpiece is tested, the air cylinder 3 is inflated, the piston rod 5 stretches out to drive the connecting moving head 1 to linearly move until the connecting moving head and the fixed plug clamp the workpiece metal joint 7, so that a closed loop is formed between a test air path and the workpiece, and the pressure test function is embodied.
In this embodiment, the movable connector 1 and the fixed plug 2 are coaxially disposed and are mutually matched, and the sealing ends of the two are respectively sealed at two ends of the metal joint 7 of the workpiece to be tested.
In this embodiment, the coating gasket 23 is composed of a non-metallic coating and a metallic skeleton, the coating is disposed on two planes of the gasket, and the thickness of the coating is controlled to be 0.01-0.06mm. The coating adhesion performance is required to bear the extrusion stress of 1MPa, and the coating does not fall off. The washer shape and size may be determined by the product used, and is generally circular. The rubber gasket 22 is composed of rubber and a metal framework. The rubber is coated with a metal framework and is prepared through compression molding and vulcanization. The shape of the rubber gasket 22 corresponds to the coated gasket 23.
The invention is used in the aspect of manufacturing the automobile brake hose assembly, can meet the 100% pressure test condition of the brake hose specified in the SAE1401 standard of the liquid brake pipe assembly, particularly when the medium is gas, the pressure is 14.5MPa, and the brake hose can be sealed in a closed pipeline. The specific principle is as follows:
The key point of the invention for identifying the scratch product of the sealing surface of the metal joint is the coating gasket of the device. The scratch product is identified by utilizing the principle that the thickness of the coating layer is very thin, and when the device works, the coating gasket 23 contacts with the sealing surface of the test workpiece. Under the action of the cylinder, the coating gasket 23 is tightly combined with the sealing surface of the test workpiece. The coated gasket 23 is pressed and the non-metallic material of the coating is softer than the metal joint, first deforming and the sealing function is achieved. Because the nonmetallic material layer is very thin by 0.01-0.06mm, the deformation is very small, and when the sealing surface of the workpiece metal joint has leakage risk scratches, the compressed air cannot be sealed. The nonmetallic material is slightly deformed under pressure, and after the extrusion stress disappears, the nonmetallic material can be recovered, so that the nonmetallic material can be reused.
Embodiment two.
As shown in FIG. 5, a device for testing the pressure test plane seal of a hose assembly comprises a movable connector 1, a fixed plug 2 and a clamping mechanism as described in the first embodiment, and also comprises a control cabinet 10, a test cabinet 25 and a compressed air pressurizing device 11, wherein all the components form a tool clamping system, a test pressure charging and discharging system and a test data collecting and displaying system.
The compressed air pressurizing device 11 is connected with the air inlet through holes on the air cylinder 3 and the piston rod 5 through the charging and discharging pipeline respectively, and the control cabinet 10 is used for controlling the movement of the air cylinder 3 and the pressure test pressure and measuring the pressure in the closed loop through the pressure sensor so as to judge the sealing performance of the workpiece to be tested. The control cabinet 10 is provided with a working button 14, an emergency button 15, a power switch 16, a power display lamp 17 and a data display 18, the test cabinet 25 is provided with a station disqualification display lamp 20 and a station qualification display lamp 21, the charging and discharging pipeline comprises a clamping gas charging and discharging pipeline 13 and a test pressure charging and discharging pipeline 12, and the clamping gas charging and discharging pipeline 13 is provided with a clamping system gas regulating valve 19.
The device is mainly used for passing the test of 100% pressure of the brake hose assembly before delivery. The brake hose assembly leaves a factory and passes 100% pressure test according to the standard (SAEJ 1401), the operation requirement is that firstly, technological parameters are set, the working air pressure of the clamping mechanism is 0.45-0.65 MPa, and the test pressure is set to be 0.2MPa. When the pressure test workpiece is placed in the clamping mechanism, the clamping mechanism is started, a closable pressure loop is formed between the brake hose assembly workpiece and the pressure test device, and the test working medium is started to be filled, so that the pipeline pressure reaches the standard requirement, and the high-pressure gas input is cut off. And maintaining the pressure in the closed loop connected with the pressure test workpiece for a period of time, measuring the pressure drop condition in the closed loop through a pressure sensor, wherein each workpiece loop is an independent loop, and setting the workpiece loop with the pressure drop of more than 0.2MPa as leakage, otherwise, the workpiece loops are opposite. And after the pressure test is finished, a warning lamp on the equipment feeds back a result, the green lamp is lightened to be qualified when the tested workpiece is not leaked, and the red lamp is lightened to be qualified when the tested workpiece is leaked. And sequentially discharging the test medium, opening the clamping workpiece when the loop pressure is reduced to 0, taking down the pressure test workpiece, and entering the next round of pressure test operation. The pressure testing device can detect abnormal problems of hose parts, metal and hose joints, metal joint working sealing surfaces and the like of the brake hose assembly, can well prevent fault parts from flowing out, and improves product quality.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by equivalent substitution and the like fall within the scope of the present invention.
The invention is not related in part to the same as or can be practiced with the prior art.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910649823.XA CN110411684B (en) | 2019-07-18 | 2019-07-18 | Hose assembly pressure test flat seal test assembly and test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910649823.XA CN110411684B (en) | 2019-07-18 | 2019-07-18 | Hose assembly pressure test flat seal test assembly and test device |
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| CN110411684A CN110411684A (en) | 2019-11-05 |
| CN110411684B true CN110411684B (en) | 2024-12-06 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295531A (en) * | 2020-02-24 | 2021-08-24 | 北京天元希米尔汽车零部件有限公司 | Universal testing device and method for testing pressure resistance of special-shaped rubber tube |
| CN112730075B (en) * | 2020-12-17 | 2022-08-23 | 中国航空综合技术研究所 | Pressure testing device and method for aviation pipeline connecting piece system |
| CN112781992B (en) * | 2020-12-25 | 2023-11-17 | 陕西德仕金迪工贸有限公司 | A kind of auxiliary tooling for assembly pipe processing |
| CN112985697B (en) * | 2021-03-11 | 2025-03-21 | 格力电器(南京)有限公司 | A pipeline joint and a sealing mechanism for pipeline sealing detection having the same |
| CN113465843A (en) * | 2021-07-21 | 2021-10-01 | 上海外高桥造船有限公司 | Equipment and method for detecting tightness of ship pipeline system |
| CN115165206A (en) * | 2022-06-20 | 2022-10-11 | 大连船用柴油机有限公司 | Marine diesel pressure sensor debugging connecting tool |
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| CN208458943U (en) * | 2018-06-04 | 2019-02-01 | 宁波恒元精工管阀科技有限公司 | Steel moulds crossover sub device for detecting sealability |
| CN210487194U (en) * | 2019-07-18 | 2020-05-08 | 南京利德东方橡塑科技有限公司 | Hose assembly pressure testing plane sealing testing component and testing device |
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| CA2638569C (en) * | 2008-08-11 | 2012-04-03 | United Testing Corp. | Tool for hydro-testing the connection of a nozzle to a pressurized structure |
| KR101058141B1 (en) * | 2009-02-18 | 2011-08-24 | 윤대훈 | Leakage detection device for piping connection |
| CN107002468B (en) * | 2014-10-12 | 2020-09-08 | 拉里·W·文森特 | Apparatus and method for assembling, measuring and monitoring the integrity of mechanical fittings |
| CN109406070A (en) * | 2017-08-18 | 2019-03-01 | 河北光德流体控制有限公司 | High pressure butt welded end value pressure test fixture |
| CN207585864U (en) * | 2017-12-29 | 2018-07-06 | 浙江努奥罗暖通科技股份有限公司 | A kind of radiator package seal checker |
| CN208902352U (en) * | 2018-09-30 | 2019-05-24 | 杭州意盛通力金属制品有限公司 | One kind is soft to be connected to dynamic pressure measuring unit |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208458943U (en) * | 2018-06-04 | 2019-02-01 | 宁波恒元精工管阀科技有限公司 | Steel moulds crossover sub device for detecting sealability |
| CN210487194U (en) * | 2019-07-18 | 2020-05-08 | 南京利德东方橡塑科技有限公司 | Hose assembly pressure testing plane sealing testing component and testing device |
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