CN110514370A - A kind of device for detecting sealability - Google Patents

A kind of device for detecting sealability Download PDF

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Publication number
CN110514370A
CN110514370A CN201910825534.0A CN201910825534A CN110514370A CN 110514370 A CN110514370 A CN 110514370A CN 201910825534 A CN201910825534 A CN 201910825534A CN 110514370 A CN110514370 A CN 110514370A
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CN
China
Prior art keywords
fluid
connecting tube
inner cavity
cavity
storage tank
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Granted
Application number
CN201910825534.0A
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Chinese (zh)
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CN110514370B (en
Inventor
谢飞飞
李英涛
范皖元
郭强强
张敬东
梁程
梁敏臣
宋长青
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Anhui Jianghuai Automobile Group Corp
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Anhui Jianghuai Automobile Group Corp
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Priority to CN201910825534.0A priority Critical patent/CN110514370B/en
Publication of CN110514370A publication Critical patent/CN110514370A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating 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
    • G01M3/32Investigating 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 containers, e.g. radiators

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The present invention discloses a kind of device for detecting sealability, for detecting the sealing characteristics of airtight cavity, including shell, driving mechanism and pressure-detecting device, shell has the inner cavity for being connected to airtight cavity, inner cavity is equipped with for forming the connecting tube being connected to airtight cavity, the inner cavity of shell is stored with fluid, driving mechanism is set to shell, to drive fluid in inner cavity and airtight cavity constant flow between the two, pressure-detecting device is set to connecting tube, to detect the pressure parameter for flowing through the fluid in connecting tube, pressure-detecting device can judge to fast accurate whether the sealing characteristics of airtight cavity meet the requirements, when driving fluid to flow to inner cavity from airtight cavity, the fluid of detection can be recycled after detection.Fluid can be gas, and perhaps liquid can be packed into and be detected with the matched gas of airtight cavity or liquid, not influence the component characteristic of airtight cavity and its corresponding device.

Description

A kind of device for detecting sealability
Technical field
The present invention relates to sealing characteristics detection technique field, in particular to a kind of device for detecting sealability.
Background technique
It in existing various kinds of equipment, much has higher requirements, how accurately to judge interior to the sealing characteristics of internal cavity Whether the sealing characteristics of portion's cavity meet design and use requirement, need corresponding detection instrument.
Common sealing characteristics detection method includes foam method or bowssening, and certain pressure is passed through in airtight cavity Gas is applied to corresponding seepage place using soap lather etc., or into the water by equipment under test, and observation foam dynamic becomes Change or underwater bubble situation, judge the equipment sealing performance with this.However above-mentioned detection method is confined to the inspection of air seal It surveys, is not used to liquid detecting, and detection accuracy is not high, extremely slight gas leakage can not be observed intuitively to come, limitation Larger, certain equipment are not suitable for being tested with water.
Summary of the invention
The main object of the present invention is to propose a kind of device for detecting sealability, it is intended to solve existing equipment sealing characteristics inspection Survey method is confined to the problem that air seal detection, precision is not high, can not directly observe.
To achieve the above object, the present invention proposes a kind of device for detecting sealability, and the sealing for detecting airtight cavity is special Property characterized by comprising
Shell, has an inner cavity for being connected to the airtight cavity, the inner cavity be equipped with for the closed chamber bodily form At the connecting tube of connection, the inner cavity of the shell is stored with fluid;
Driving mechanism, be set to the shell, to drive the fluid both the inner cavity and the airtight cavity it Between constant flow;And
Pressure-detecting device is set to the connecting tube, to detect the pressure for flowing through the fluid in the connecting tube Parameter.
Optionally, the shell is in vertically to being extended, the driving mechanism includes:
Piston, vertically to being movably arranged in the inner cavity, by the inner cavity be divided into from top to bottom upper chamber and Lower chambers, the lower chambers are connected to the lower chambers to store fluid, the connecting tube;
Piston rod, vertically to being extended, the lower end of the piston rod is connect with the piston;And
Operation portion, set on the upper end of the piston rod, to drive the piston rod vertically to activity.
Optionally, the operation portion includes:
Drive rod, the middle part of the drive rod and the upper end of the piston rod are rotatably coupled;And
Support rod vertically to extending is set to the outer wall of the shell, one end of the drive rod and the support The upper end of bar is rotatably coupled.
Optionally, the operation portion further includes handrail, and the handrail is convexly equipped in the outer wall of the shell.
Optionally, further include reflux branch, it is described reflux branch both ends respectively with the lower chambers and the connecting tube Connection is formed, the reflux branch road is equipped with storage tank, when flowing back for the fluid from the airtight cavity, successively passes through institute Connecting tube and the storage tank are stated, and is back to the bottom chamber.
Optionally, it is described reflux branch include positioned at the lower chambers and the storage tank between first flow back pipeline section, And the second reflux pipeline section between the connecting tube and the storage tank;
The connecting tube has two connectors being connected to respectively with the lower chambers and the second reflux pipeline section;
The device for detecting sealability further includes the first check valve, second one-way valve and shut-off valve, first check valve In the connecting tube, and between described two connectors, the second one-way valve is set to the first reflux pipeline section On, the shut-off valve is set to the second reflux pipeline section;
Wherein, the forward conduction flow direction of first check valve is flows to the airtight cavity from the inner cavity, and described the The forward conduction flow direction of two check valves is to flow to the inner cavity from the storage tank.
Optionally, the connecting pin of first return pipe and the storage tank is arranged close to the bottom of the storage tank.
Optionally, the first reflux pipeline section, the second reflux pipeline section, the first connection pipeline section, described second connect It is in removably to be correspondingly connected with that nozzle belt and the storage tank, which pass through pipe fitting,.
Optionally, the pressure-detecting device is high-precision pressure sensor.
In technical solution of the present invention, the inner cavity of shell is stored with fluid, and fluid can be gas or liquid, driving machine Structure can drive fluid to flow to airtight cavity from inner cavity, fluid can also be driven to flow to inner cavity from airtight cavity, when fluid is from interior When chamber flows to airtight cavity, by connecting tube, positioned at connecting tube pressure-detecting device can real-time detection fluid pressure parameter, Pressure parameter includes the pressure value of fluid and the rate of decay of pressure value and decaying size, therefore can rapidly and accurately be judged Whether the sealing characteristics of airtight cavity meet the requirements, and when fluid flows to inner cavity from airtight cavity, can play after detection The effect of recycling, this device for detecting sealability it is applied widely, for outside be not suitable for immersion equipment can also with water come It is sealed the detection of characteristic.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the stereoscopic schematic diagram of an embodiment provided by the invention.
Drawing reference numeral explanation:
Label Title Label Title
1 Shell 23 Drive rod
11 Lower chambers 24 Support rod
12 Upper chamber 25 Handrail
13 Connecting tube 31 Storage tank
131 First connection pipeline section 32 First reflux pipeline section
132 Second connection pipeline section 321 Second reflux pipeline section
133 First check valve 33 Second one-way valve
21 Piston 331 Shut-off valve
22 Piston rod 4 Fluid
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention, Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship, Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy Sign.In addition, the meaning of the "and/or" occurred in full text, including three schemes arranged side by side, by taking " A and/or B " as an example, including the side A The scheme that case or B scheme or A and B meet simultaneously.In addition, the technical solution between each embodiment can be combined with each other, but To be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occur it is conflicting or can not Will be understood that the combination of this technical solution is not present when realization, also not the present invention claims protection scope within.
Common sealing characteristics detection method includes foam method or bowssening, and certain pressure is passed through in airtight cavity Gas is applied to corresponding seepage place using soap lather etc., or into the water by equipment under test, and observation foam dynamic becomes Change or underwater bubble situation, judge the equipment sealing performance with this.However above-mentioned detection method is confined to the inspection of air seal It surveys, is not used to liquid detecting, detection accuracy is not high, can not intuitively observe to come to extremely slight gas leakage, and limitation is larger, Certain equipment are not suitable for being tested with water.
Referring to Fig. 1, for an embodiment of device for detecting sealability proposed by the present invention, in the present embodiment, leakproofness inspection The sealing characteristics that device is used to detect airtight cavity (attached drawing is not shown) are surveyed, and including shell 1, driving mechanism and pressure detecting Device (attached drawing is not shown), shell 1 have the inner cavity for being connected to airtight cavity, and inner cavity is equipped with to be connected for being formed with airtight cavity Logical connecting tube 13, the inner cavity of shell 1 are stored with fluid 4, and driving mechanism is set to shell 1, to drive fluid 4 in inner cavity and close Closed chamber body constant flow between the two, pressure-detecting device is set to connecting tube 13, to detect the fluid 4 flowed through in connecting tube 13 Pressure parameter.
In the present embodiment, the inner cavity of shell 1 is stored with fluid 4, and it is closed that driving mechanism can drive fluid 4 to flow to from inner cavity Cavity can also drive fluid 4 to flow to inner cavity from airtight cavity, when fluid 4 flows to airtight cavity from inner cavity, by connecting tube 13, positioned at connecting tube 13 pressure-detecting device can real-time detection fluid 4 pressure parameter, specifically, in the present embodiment, pressure Detection device is high-precision pressure sensor, and pressure parameter includes the pressure value of fluid 4 and the rate of decay of pressure value and declines Subtract size, therefore can judge to fast accurate whether the sealing characteristics of airtight cavity meet the requirements, when driving fluid 4 is from closed chamber When body flows to inner cavity, the fluid 4 of detection can be recycled after detection.
In the present embodiment, fluid 4 can be gas, and perhaps liquid can be packed into and the matched gas of airtight cavity or liquid Detected, do not influenced the component characteristic of airtight cavity and its corresponding device, this device for detecting sealability it is applied widely, it is right The detection of characteristic can also be sealed with water in the equipment that outside is not suitable for immersion.
Further, shell 1 is in vertically to being extended, driving mechanism includes piston 21, piston rod 21 and operation Inner cavity vertically to inner cavity is movably arranged in, is divided into upper chamber 12 and lower chambers 11 by portion, piston 21 from top to bottom, under For chamber 11 to store fluid 4, connecting tube 13 is connected to lower chambers 11, piston rod 21 vertically to being extended, piston rod 21 Lower end is connect with piston 21, and operation portion is set to the upper end of piston rod 21, to drive piston rod 21 vertically to activity.
In the present embodiment, shell 1 is vertically to extended, and driving mechanism includes piston 21 and piston rod 21, is led to Driving of the up and down realization to fluid 4 in the lumen of piston 21 is crossed, is had the advantages of simple structure and easy realization, hand may be implemented in operation portion Dynamic operation, does not need the participation of electric device, therefore at low cost.
Further, operation portion includes drive rod 23 and support rod 24, and the middle part of drive rod 23 is upper with piston rod 21 End is rotatably coupled, and support rod 24 vertically to extending is set to the outer wall of shell 1, one end of drive rod 23 and support rod 24 upper end is rotatably coupled.
In the present embodiment, realized by lever principle to the movable operation of 21 upward and downward of piston rod, it is relatively labor-saving.
Further, operation portion further includes handrail 25, and handrail 25 is convexly equipped in the outer wall of shell 1, and user is at one When drive rod 23 is manually operated in hand, another hand can be put in handrail 25, and when operation more coordinates, more labor-saving.
Further, this device for detecting sealability further include reflux branch, the both ends for the branch that flows back respectively with lower chambers 11 It is connected to the formation of connecting tube 13, reflux branch road is equipped with storage tank 31, when flowing back for fluid 4 from airtight cavity, successively passes through Connecting tube 13 and storage tank 31, and be back in lower chambers 11
In order to further enhance the recovering effect to the fluid 4 in airtight cavity, this device for detecting sealability further includes back Branch is flowed, when its role is to recycle fluid 4, the inner cavity for being not directed through shell 1 is drawn, but passes through depositing in reflux branch Storage tank 31 is drawn, it is contemplated that in the present embodiment, device for detecting sealability is to control the up and down of piston 21 by lever principle , when recycling fluid 4, the fluid 4 in inner cavity can be pressed into again airtight cavity, by setting between inner cavity and airtight cavity A storage tank 31 is set, the fluid 4 of recycling is stored, then backs into inner cavity, can accelerate to recycle speed, promote recovery efficiency.
Further, reflux branch include positioned at lower chambers 11 and storage tank 31 between first flow back pipeline section 32 and Between connecting tube 13 and storage tank 31 second reflux pipeline section 321, connecting tube 13 have respectively with lower chambers 11 and second Two connectors that the pipeline section 321 that flows back is connected to, while connecting tube 13 being divided for the first connection pipeline section 131 and the second connection pipeline section 132, device for detecting sealability further includes the first check valve 133 and second one-way valve 33, and the first check valve 133 is set to connecting tube 13 On, and be located between two connectors, second one-way valve 33 is set on the first reflux pipeline section 32, wherein the first connection pipeline section 131 On check valve be the first check valve 133, forward conduction direction is to flow to airtight cavity from inner cavity, on the first reflux pipeline section 32 Check valve be second one-way valve 33, forward conduction direction is from storage tank 31 to flow to inner cavity.
In the present embodiment, when driving mechanism drives fluid 4 to flow into airtight cavity, the first check valve 133 is forward conduction, is made Fluid 4 can enter airtight cavity by connecting tube 13, at this point, shut-off valve 331 is in close state and second one-way valve 33 is common Effect can stop fluid 4 to flow into storage tank 31 from lower chambers 11, in the entrance airtight cavity for concentrating fluid 4 more, driving mechanism When driving fluid 4 flows back into lower chambers 11 from airtight cavity, the first check valve 133 can stop fluid 4 directly to flow back into down Chamber 11, at this point, shut-off valve 331 is in the open state, second one-way valve 33 is forward conduction, and fluid 4 is made to be introduced into storage tank 31 so that flow back into lower chambers 11, be to control piston by lever principle by the driving method of driving mechanism in this present embodiment 21 it is up and down, therefore by above-mentioned setting, fluid 4 can be made more efficient when being back to lower chambers 11.
Further, the connecting pin of the first return pipe and storage tank 31 is arranged close to the bottom of storage tank 31, can make shell The inner cavity of body 1 more sucks the fluid 4 in storage tank 31.
Further, the first reflux reflux pipeline section 321, first of pipeline section 32, second connects pipeline section 131, first and connects pipeline section 131 and storage tank 31 by pipe fitting in being removably correspondingly connected with, can will when not using this device for detecting sealability It is removed, and is moved easily, carries, is cleaned, can rapidly on-site assembly when needing using this device for detecting sealability.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this Under the design of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/it is used in it indirectly He is included in scope of patent protection of the invention relevant technical field.

Claims (9)

1. a kind of device for detecting sealability, for detecting the sealing characteristics of airtight cavity characterized by comprising
Shell has the inner cavity for being connected to the airtight cavity, and the inner cavity is equipped with to be connected for being formed with the airtight cavity The inner cavity of logical connecting tube, the shell is stored with fluid;
Driving mechanism is set to the shell, to drive the fluid to hold therebetween in the inner cavity and the airtight cavity Afterflow is dynamic;And
Pressure-detecting device is set to the connecting tube, to detect the pressure parameter for flowing through the fluid in the connecting tube.
2. device for detecting sealability as described in claim 1, which is characterized in that the shell in vertically to be extended, The driving mechanism includes:
The inner cavity is divided into upper chamber and cavity of resorption vertically to the inner cavity is movably arranged in by piston from top to bottom Room, the lower chambers are connected to the lower chambers to store fluid, the connecting tube;
Piston rod, vertically to being extended, the lower end of the piston rod is connect with the piston;And operation portion, it is set to institute The upper end for stating piston rod, to drive the piston rod vertically to activity.
3. device for detecting sealability as claimed in claim 2, which is characterized in that the operation portion includes:
Drive rod, the middle part of the drive rod and the upper end of the piston rod are rotatably coupled;And
Support rod vertically to extending is set to the outer wall of the shell, one end of the drive rod and the support rod Upper end is rotatably coupled.
4. device for detecting sealability as claimed in claim 3, which is characterized in that the operation portion further includes handrail, described Handrail is convexly equipped in the outer wall of the shell.
5. device for detecting sealability as claimed in claim 2, which is characterized in that further include reflux branch, the reflux branch Both ends be connected to respectively with the lower chambers and connecting tube formation, the reflux branch is equipped with storage tank on the road, for described When fluid flows back from the airtight cavity, successively pass through the connecting tube and the storage tank, and be back to the bottom chamber.
6. device for detecting sealability as claimed in claim 5, which is characterized in that the reflux branch includes being located at the cavity of resorption The first reflux pipeline section between room and the storage tank and the second reflux between the connecting tube and the storage tank Pipeline section;
The connecting tube has two connectors being connected to respectively with the lower chambers and the second reflux pipeline section;
The device for detecting sealability further includes the first check valve, second one-way valve and shut-off valve, and first check valve is set to In the connecting tube, and between described two connectors, the second one-way valve is set on the first reflux pipeline section, institute It states shut-off valve and is set to the second reflux pipeline section;
Wherein, for the forward conduction flow direction of first check valve to flow to the airtight cavity from the inner cavity, described second is single It is to flow to the inner cavity from the storage tank to the forward conduction of valve flow direction.
7. device for detecting sealability as claimed in claim 6, which is characterized in that first return pipe and the storage tank Connecting pin is arranged close to the bottom of the storage tank.
8. device for detecting sealability as claimed in claim 6, which is characterized in that the first reflux pipeline section, second time described Flow tube section, the first connection pipeline section, the second connection pipeline section and the storage tank pass through pipe fitting in removably It is correspondingly connected with.
9. device for detecting sealability as described in claim 1, which is characterized in that the pressure-detecting device is high-precision pressure Sensor.
CN201910825534.0A 2019-08-30 2019-08-30 Tightness detection device Active CN110514370B (en)

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Application Number Priority Date Filing Date Title
CN201910825534.0A CN110514370B (en) 2019-08-30 2019-08-30 Tightness detection device

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Application Number Priority Date Filing Date Title
CN201910825534.0A CN110514370B (en) 2019-08-30 2019-08-30 Tightness detection device

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CN110514370B CN110514370B (en) 2020-12-01

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