CN109738135A - A kind of air-tightness detection device and air-tightness detection method suitable for sealing container - Google Patents
A kind of air-tightness detection device and air-tightness detection method suitable for sealing container Download PDFInfo
- Publication number
- CN109738135A CN109738135A CN201910112003.7A CN201910112003A CN109738135A CN 109738135 A CN109738135 A CN 109738135A CN 201910112003 A CN201910112003 A CN 201910112003A CN 109738135 A CN109738135 A CN 109738135A
- Authority
- CN
- China
- Prior art keywords
- valve
- hole
- sealed container
- air
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 86
- 238000007789 sealing Methods 0.000 title claims abstract description 70
- 230000002093 peripheral effect Effects 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 14
- 230000000740 bleeding effect Effects 0.000 claims description 9
- 230000003584 silencer Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 5
- 230000001737 promoting effect Effects 0.000 abstract 2
- 238000009530 blood pressure measurement Methods 0.000 description 8
- 238000003825 pressing Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of air-tightness detection devices and air-tightness detection method suitable for sealing container, belong to container air-tightness detection field, it is by being correspondingly arranged valve body, inflatable component, deflation component and manometric module, the connector of sealing container is correspondingly connected with one end of valve body, the other end is correspondingly connected with manometric module, and correspondence opens up connecting hole to connect inflatable component and deflation component on the periphery of valve body, can effectively realize air-leakage test of the sealing container in the case where a connector is only arranged.Air-tightness detection device and air-tightness detection method suitable for sealing container of the invention, its apparatus structure is simple, detection method is convenient, it can effectively realize the air-leakage test of sealing container, the accuracy and efficiency for greatly promoting sealing container detection, reduces the difficulty of sealing container sealing propertytest, avoids the setting of additional connector in sealing container, the cost of sealing container air-leakage test is reduced, with good application prospect and promotional value.
Description
Technical Field
The invention belongs to the field of container air tightness detection, and particularly relates to an air tightness detection device and an air tightness detection method suitable for a sealed container.
Background
In daily life and industrial production, sealed containers are widely used, such as various gas storage tanks, vacuum bottles, pressure tanks, and the like. The airtightness of the sealed container is a function which is first guaranteed, and is also the most important function which the sealed container must have. Therefore, after the sealed container is processed and manufactured, the sealed container is required to be subjected to airtightness detection so as to evaluate the sealing performance of the sealed container.
At present, a method for detecting the air tightness of a sealed container is generally an inflation pressure measurement method, namely, after dry compressed air with a certain pressure value is filled into the sealed container, inflation is stopped, pressure detection is carried out by a correspondingly installed barometer, after pressure maintaining is carried out for a certain time, if the pressure value in the sealed container is unchanged, the air tightness of the sealed container is judged to be qualified, otherwise, the air tightness of the sealed container is judged to be unqualified, and the sealed container is an unqualified product and needs to be scrapped or repaired.
In the prior art, the air tightness of the sealed container is mostly detected by providing three detection ports, namely, an inflation port, a deflation port and a pressure detection port, on the sealed container. The pressure detection port is used for connecting a barometer, and the inflation valve and the deflation valve are usually ball valves or stop valves. Although the above-mentioned mode can realize the gas tightness of sealed container to a certain extent and detect, still have great defect, mainly reflect in: the detection mode among the prior art need set up three detection mouth on being detected sealed container to connect a plurality of crossover sub, this shaping degree of difficulty and the preparation cost that not only can increase sealed container, still can increase the connection degree of difficulty of gas tightness check out test set because of a plurality of crossover sub's setting, gas tightness detection device's convenience and leakproofness can't obtain fully provided, also make sealed container's gas tightness testing result's accuracy can't obtain fully guaranteed, the influence is to the accurate judgement of sealed container gas tightness, cause the unnecessary loss. Therefore, the existing air tightness detection mode and detection device have certain limitations, and the air tightness detection of the sealed container cannot be fully met.
Disclosure of Invention
Aiming at one or more of the defects or the improvement requirements in the prior art, the invention provides an air tightness detection device and an air tightness detection method suitable for a sealed container, wherein the valve body, the inflation assembly, the deflation assembly and the barometer are correspondingly arranged, and the air tightness detection of the sealed container can be effectively realized through the corresponding matching work of all the parts, so that the air tightness detection process of the sealed container is simplified, and the air tightness detection efficiency and the accuracy of the sealed container are improved.
In order to achieve the above object, in one aspect of the present invention, there is provided an air tightness detecting device for a sealed container, comprising a pressure measuring assembly, and further comprising a valve body, an inflation assembly and a deflation assembly; wherein,
the valve body is of a long rod-shaped structure, an air path hole penetrating through two end faces is formed between the two end faces of the valve body along the axial direction, and the two ends of the valve body along the axial direction are respectively a first connecting end and a second connecting end; the first connecting end can be correspondingly connected with a connecting port on the sealed container, the peripheral wall surface of the second connecting end is correspondingly provided with a first connecting hole and a second connecting hole which penetrate through the gas path hole, and a third connecting hole which is coaxially arranged on the end surface of the second connecting end, which is far away from the first connecting end, and corresponds to the gas path hole is used for correspondingly connecting the pressure measuring assembly in the third connecting hole;
the inflation assembly can be correspondingly connected to the first connecting hole, the deflation assembly can be correspondingly connected to the second connecting hole, and the inflation assembly and the deflation assembly respectively comprise a valve rod and a valve cavity which is coaxially sleeved on the periphery of the valve rod and can slide along the axial direction; wherein,
the valve rod is in a long rod shape, one end of the valve rod can be connected to the corresponding connecting hole in a matching mode, the other end of the valve rod is connected with an inflation tube or atmosphere for inflation, blind holes with certain length, namely a first shaft hole and a second shaft hole which are not communicated with each other, are respectively formed in the two ends of the valve rod along the axial direction, and a plurality of first through holes communicated with the first shaft hole and a plurality of second through holes communicated with the second shaft hole are respectively formed in the peripheral direction of the valve rod in an annular mode; the valve cavity is of a cylindrical structure with a circular through hole, the inner diameter of the valve cavity is larger than the outer diameter of the valve rod, at least three annular grooves are formed in the inner peripheral wall surface of the valve cavity at intervals along the axial direction, first sealing rings which are abutted against the outer peripheral wall surface of the valve rod are embedded into the annular grooves respectively, the distance between at least one pair of adjacent first sealing rings is larger than the axial distance between the first through hole and the second through hole, and the first through hole and the second through hole can be communicated or disconnected by axial sliding of the valve cavity; and then, through the sliding control of the two valve cavities, the inflation process and the deflation process of the sealed container can be correspondingly finished, and the pressure measuring assembly can correspondingly monitor the air pressure in the inflated sealed container, so that the air tightness detection of the sealed container is realized.
As a further improvement of the present invention, the first connection hole and the second connection hole are respectively disposed on two sides of the second connection end, and the two connection holes are coaxially opened.
As a further improvement of the invention, a boss is circumferentially arranged on the outer periphery of at least one valve rod, and the boss can abut against the outer peripheral wall surface of the valve body with an end surface after the valve rod is connected with the corresponding connecting hole.
As a further improvement of the invention, a groove is formed in the end face, opposite to the valve body, of the boss along the circumferential direction, the first sealing ring is embedded in the groove correspondingly, and the thickness of the first sealing ring is larger than the depth of the groove.
As a further improvement of the present invention, the first through holes formed in the outer peripheral wall surface of at least one of the valve stems are formed in a plurality at intervals in the circumferential direction.
As a further improvement of the present invention, the second through holes formed in the outer peripheral wall surface of at least one of the valve stems are formed in a plurality at intervals in the circumferential direction.
As a further improvement of the present invention, the first through hole and the second through hole are radially opened, and the two through holes are respectively opened corresponding to the end portions of the two shaft holes close to each other.
As a further improvement of the invention, a valve nozzle is arranged on one end of the valve rod in the inflation assembly, which is far away from the valve body, and the inflation tube can be correspondingly connected to the valve nozzle.
As a further improvement of the invention, a connecting head is arranged on one end of the valve rod in the air bleeding component, which is far away from the valve body, and a silencer is correspondingly arranged on the connecting head.
As a further improvement of the invention, the pressure measuring device is a pressure gauge.
As a further improvement of the invention, the length of the first connecting end is equal to that of the connecting port, the first connecting end is of a two-section structure, the end part of the first connecting end is a sealing section with a smaller outer diameter, and the other end of the first connecting end is a connecting end correspondingly connected with the connecting port; the periphery of the sealing section is annularly provided with a sealing groove, a second sealing ring is embedded into the sealing groove correspondingly, and the second sealing ring can be correspondingly abutted against the inner peripheral wall surface of the connecting port.
As a further improvement of the present invention, an annular groove is circumferentially formed on a bottom surface of the third connecting hole, and a third sealing ring is embedded in the annular groove, wherein the thickness of the third sealing ring is greater than the depth of the annular groove.
As a further improvement of the present invention, the first seal ring, the second seal ring and the third seal ring are nitrile rubber O-ring seals.
As a further improvement of the invention, the valve body is in threaded connection with the sealed container, and/or the two valve rods are in threaded connection with the corresponding connecting holes, and/or the pressure measuring assembly is in threaded connection with the third connecting hole.
In another aspect of the present invention, there is provided a method for detecting air tightness of a sealed container, which is implemented by using the apparatus for detecting air tightness of a sealed container, and comprises the following steps:
s1: correspondingly connecting the first connecting end of the valve body to a connecting port of the sealed container, and connecting the valve rod of the inflation assembly with the inflation tube;
s2: controlling the two valve cavities to slide along the axial direction, and enabling the two shaft holes on the valve rod of the inflation assembly to be communicated with each other, and the two shaft holes on the valve rod of the deflation assembly not to be communicated with each other;
s3: inflating the sealed container by the inflation tube, monitoring the air pressure in the sealed container in real time by the pressure measuring assembly, stopping inflating when the air pressure reaches a certain value, and controlling the valve cavity of the inflation assembly to slide along the axial direction so that two shaft holes on the valve rod of the inflation assembly are not communicated with each other;
s4: monitoring whether the air pressure in the sealed container changes or not by using the pressure measuring assembly so as to correspondingly judge the air tightness of the sealed container;
s5: after the pressure measuring assembly monitors for a certain time, the valve cavity of the air bleeding assembly is controlled to slide along the axial direction, so that the two shaft holes on the valve rod of the air bleeding assembly are connected with each other, the gas in the sealed container is discharged, and the air tightness detection of the sealed container is completed.
The above-described improved technical features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
(1) the invention relates to an air tightness detection device suitable for a sealed container, which is characterized in that a valve body, an inflation component, an deflation component and a pressure measuring component are correspondingly arranged, one end of the valve body is correspondingly connected with a connecting port of the sealed container, the other end of the valve body is correspondingly connected with the pressure measuring component, and connecting holes are correspondingly formed in the periphery of the valve body to connect the inflation component and the deflation component, so that the inflation, deflation and pressure detection of the sealed container are effectively realized under the condition that only one connecting port is arranged on the sealed container, the arrangement of an additional connecting port on the sealed container is avoided, the air tightness detection efficiency and accuracy of the sealed container are greatly improved, the difficulty and detection cost of the air tightness detection of the sealed,
(2) according to the air tightness detection device suitable for the sealed container, the valve cavities and the sealing rings are correspondingly arranged on the two valve rods, and the shaft holes and the through holes for connecting the shaft holes are correspondingly formed, so that the corresponding connection or the corresponding disconnection of the two shaft holes on the same valve rod can be realized through the axial sliding of the valve cavities, the quick switching of the processes of inflation, deflation, pressure measurement and the like of the air tightness detection device can be correspondingly completed, the valve cavities are simple to arrange and convenient to control, the accuracy of air tightness detection of the sealed container can be effectively improved, and the operation difficulty of the air tightness detection of the sealed container is reduced;
(3) according to the air tightness detection device suitable for the sealed container, the boss structure is correspondingly arranged on the valve rod, the sealing rings are correspondingly arranged along the annular direction, the connection sealing performance of the valve rod and the valve body can be effectively improved, the sealing rings are correspondingly arranged on the bottom surfaces of the third connecting holes, the connection sealing performance of the pressure measuring assembly and the valve body can be effectively improved, the sealing rings are correspondingly arranged at the end parts of the first connecting ends, the connection sealing performance of the valve body and a connecting port of the sealed container can be effectively improved, in view of the above, the assembly and connection sealing performance of the air tightness detection device can be effectively improved, the air tightness detection accuracy of the sealed container is improved, and the generation of detection errors is reduced;
(4) according to the air tightness detection device suitable for the sealed container, the length of the valve cavity, the arrangement distance of the sealing rings in the valve cavity and the distances between the end part of the valve nozzle, the end part of the connector and the corresponding boss are correspondingly arranged, so that after the end part of the valve cavity is correspondingly abutted against the corresponding structure, two shaft holes of the valve rod are just in a connected or disconnected state, the control process of the valve cavity is further simplified, the control precision and the detection efficiency of the air tightness detection of the sealed container are improved, and the air tightness detection cost of the sealed container is reduced;
(5) the air tightness detection device and the air tightness detection method suitable for the sealed container are simple in structure, convenient and fast in detection method, capable of effectively achieving air tightness detection of the sealed container, greatly improving detection accuracy and efficiency of the sealed container, reducing difficulty of the air tightness detection of the sealed container, avoiding arrangement of an additional connecting port on the sealed container, reducing air tightness detection cost of the sealed container, and good in application prospect and popularization value.
Drawings
FIG. 1 is a schematic view showing the structural assembly of an air-tightness detecting device suitable for a sealed container in an embodiment of the present invention;
FIG. 2 is a sectional view showing the structure of a valve body of an air-tightness detecting device for a sealed container according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of an inflation valve stem of an air-tightness detecting device for a sealed container according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a purge valve lever of the airtightness detection apparatus adapted to seal the container in the embodiment of the present invention;
FIG. 5 is a schematic view of an embodiment of the present invention with the first and second axle apertures of the inflation assembly in communication;
FIG. 6 is a schematic view of an embodiment of the present invention with the first and second axial bores of the inflation assembly correspondingly isolated;
FIG. 7 is a schematic view of the bleed assembly of an embodiment of the present invention with the third and fourth shaft apertures in communication;
FIG. 8 is a schematic view of the vent assembly of an embodiment of the present invention with the third and fourth shaft holes isolated from each other;
FIG. 9 is a schematic view showing the state of the air-tightness detecting device when the air is filled into the hermetic container in the embodiment of the present invention;
FIG. 10 is a schematic view showing a state of the airtightness detection apparatus when pressure is measured in isolation according to the embodiment of the present invention;
FIG. 11 is a schematic view showing the state of the air-tightness detecting device when the air is released to the outside in the embodiment of the present invention;
FIG. 12 is a step of performing airtightness detection of a sealed container by using the airtightness detection apparatus according to the embodiment of the present invention;
in all the figures, the same reference numerals denote the same features, in particular: 1. the valve comprises a valve body, 101, a first connecting end, 1011, a connecting section and 1012, a sealing section; 102. a second connection terminal, 1021, a first connection hole, 1022, a second connection hole, 1023, a third connection hole; 103. a gas path hole; 2. the inflator assembly comprises 201, an inflator valve rod, 2011, a first through hole, 2012, a second through hole, 2013, a first shaft hole, 2014, a second shaft hole, 2015 and a first boss; 202. an inflation valve cavity, 203, a valve nozzle, 204 and a pressing cover; 3. the air release component comprises an air release valve rod 301, an air release valve rod 3011, a third through hole 3012, a fourth through hole 3013, a third shaft hole 3014, a fourth shaft hole 3015 and a second boss; 302. a gas discharge valve cavity, 303, a connector, 304, a silencer; 4. the pressure measuring assembly, 5, a sealing assembly, 501, a first sealing ring, 502, a second sealing ring, 503, a third sealing ring; 6. and (4) sealing the container.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The air tightness detection device suitable for the sealed container in the preferred embodiment of the invention is shown in fig. 1, the matching schematic diagram of the air tightness detection device and the sealed container 6 is shown in fig. 9-11, and the accurate detection of the air tightness of the sealed container 6 can be realized through the corresponding control of the air tightness detection device.
Specifically, as shown in fig. 1, the airtightness detection apparatus in the preferred embodiment includes a valve body 1, an inflation module 2, a deflation module 3, and a pressure measurement module 4, and a sealing module 5 provided in correspondence with the respective components.
The valve body 1 in the preferred embodiment is shown in fig. 2, and is of a two-stage design, and includes a first connecting end 101 for connecting the sealed container 6 and a second connecting end 102 for connecting the inflation module 2, the deflation module 3 and the pressure measurement module 4, wherein the first connecting end 101 and the second connecting end 102 are coaxially arranged, and are axially provided with air passage holes 103 penetrating through two side end faces of the valve body 1.
Further, the first connection end 101 in the preferred embodiment is arranged corresponding to a connection port on the sealed container 6, and is a cylindrical structure with a circular cross section, which can be correspondingly embedded into and hermetically connected with the connection port of the sealed container 6; furthermore, the first connecting end 101 is connected with the connecting port in a thread matching manner, namely, an external thread is formed on the outer periphery of the first connecting end 101, and an internal thread is formed on the inner peripheral wall surface of the connecting port; further preferably, the first connection end 101 is a two-section structure, and includes a connection section 1011 connected to the second connection end 102 and a sealing section 1012 coaxially disposed at an end of the connection section 1011 away from the second connection end 102, an outer diameter of the sealing section 1012 is preferably smaller than an outer diameter of the connection section 1011, an annular sealing groove is disposed on an outer periphery of the sealing section 1012 along an annular direction, and a first sealing ring 501 is disposed in the sealing groove correspondingly, so that when the first connection end 101 is correspondingly connected to a connection port of the sealed container 6, the first sealing ring 501 can correspondingly abut against an inner peripheral wall surface of the connection port, and the first connection end 101 is hermetically connected, as shown in fig. 9 to 11.
Further, in a preferred embodiment, the outer diameter of the second connecting end 102 is larger than that of the first connecting end 101, and a step-shaped structure is formed at the joint of the two, so that when the first connecting end 101 is correspondingly matched on the connecting port, the end face of the second connecting end 102 can abut against the outer wall surface of the sealed container 6; further, the periphery of the second connecting end 102 is respectively provided with a first connecting hole 1021 and a second connecting hole 1022 corresponding to the inflation assembly 2 and the deflation assembly 3, the two connecting holes are correspondingly communicated with the air passage hole 103, and the axes of the two connecting holes are preferably perpendicular to the axis of the air passage hole 103; further preferably, the first connecting hole 1021 and the second connecting hole 1022 in the preferred embodiment are coaxially arranged, so that the inflation assembly 2 and the deflation assembly 3 can be coaxially arranged on both sides of the outer circumference of the valve body 1 after being correspondingly arranged.
Further, the inflation module 2 and the deflation module 3 in the preferred embodiment are respectively connected with the valve body 1 through threads, that is, the inner peripheral wall surfaces of the first connecting hole 1021 and the second connecting hole 1022 are provided with internal threads; further, a third connecting hole 1023 with a certain depth is formed at the end of the second connecting end 102, and is coaxially formed with the air passage hole 103 for corresponding connection of the pressure measuring assembly 4, and obviously, the inner diameter of the third connecting hole 1023 is larger than the inner diameter of the air passage hole 103; preferably, an inner circumferential wall surface of the third connecting hole 1023 is internally threaded for threaded connection between the load cell assembly 4 and the third connecting hole 1023; further preferably, an annular groove with a certain depth is coaxially formed in the bottom of the third connecting hole 1023 along the circumferential direction, a third sealing ring 503 is correspondingly embedded into the annular groove, and the end surface of the third sealing ring 503 protrudes out of the bottom surface of the third connecting hole 1023, so that when the connecting end of the pressure measuring assembly 4 is correspondingly connected with the third connecting hole 1023, the third sealing ring 503 can correspondingly abut against the end surface of the connecting end of the pressure measuring assembly 4, and the connection sealing performance of the pressure measuring assembly 4 and the valve body 1 is improved. It should be noted that the cross section of the second connecting end 102 may be rectangular, cylindrical, oval, or polygonal as required, which is rectangular in the preferred embodiment, and may be further preferably square.
Further, the inflation assembly 2 in the preferred embodiment is shown in fig. 5 and 6, and preferably includes an inflation valve stem 201 and a corresponding mating inflation valve cavity 202, valve mouth 203 and compression cap 204.
Specifically, the inflation valve stem 201 is as shown in fig. 3, and has a multi-stage step rod structure, two ends of which are respectively a valve body connecting end and a gas pipe connecting end, and a rod body with a certain length is arranged between the two connecting ends; the valve body connecting end can be correspondingly connected to the first connecting hole 1021 in a matching mode, the end part of the valve body connecting end is correspondingly provided with an external thread, and the first connecting hole 1021 is correspondingly provided with an internal thread; further preferably, a first boss 2015 is arranged on the outer periphery of the end part of the rod body close to the connecting end of the valve body along the annular direction, and after the inflation valve rod 201 is connected to the valve body 1 in a matching manner, the first boss 2015 can abut against the side wall surface of the valve body 1 in an end face manner; correspondingly, set up flutedly along the hoop on first boss 2015 just to the surface of valve body 1 to correspond and be provided with the second sealing washer 502 that thickness is greater than the groove depth in the recess, make inflation valve rod 201 and the corresponding back of being connected of valve body 1, second sealing washer 502 can butt the lateral wall face of valve body 1, in order to promote the leakproofness that inflation valve rod 201 and valve body 1 are connected.
Furthermore, blind holes with a certain depth, namely a first shaft hole 2013 and a second shaft hole 2014 which are coaxially arranged and are not communicated with each other, are respectively formed in the end surfaces of the two sides of the inflation valve stem 201 along the axial direction, and the two shaft holes are spaced at a certain interval in the axial direction; furthermore, a plurality of through holes are radially formed in the peripheral wall surface of the inflation valve stem 201 corresponding to the adjacent two end portions of the two shaft holes, that is, a first through hole 2011 formed in the peripheral wall surface of the inflation valve stem 201 corresponding to the first shaft hole 2013 and a second through hole 2012 formed in the peripheral wall surface of the inflation valve stem 201 corresponding to the second shaft hole 2014 are formed, and the first through hole 2011 and the second through hole 2011 are respectively formed in a radial direction or a plurality of through holes formed at intervals in an annular direction; further preferably, in a preferred embodiment, the first through hole 2011 and the second through hole 2012 are respectively two oppositely arranged, that is, the two first through holes 2011 are coaxially arranged, and the two second through holes 2012 are coaxially arranged.
Further, the inflation valve cavity 202 is cylindrical, and the inner diameter of the inflation valve cavity is larger than the outer diameter of the rod body of the inflation valve rod 201, so that after the inflation valve cavity 202 is coaxially sleeved on the outer periphery of the rod body, a certain gap is formed between the inner peripheral wall surface of the inflation valve cavity 202 and the outer peripheral wall surface of the rod body; further, at least three annular grooves are axially formed in the inner peripheral wall surface of the inflation valve cavity 202, second sealing rings 502 are correspondingly embedded in the annular grooves, and after the inflation valve cavity 202 is correspondingly sleeved on the outer periphery of the rod body, the second sealing rings 502 can be abutted against the outer peripheral wall surface of the rod body.
In a preferred embodiment, the number of the annular grooves is three, and the distance between at least one pair of adjacent annular grooves is greater than the axial distance between the first through hole 2011 and the second through hole 2012, so that when the inflation valve cavity 202 axially slides to a corresponding position, the first through hole 2011 and the second through hole 2012 can be correspondingly positioned between two adjacent second sealing rings 502, at this time, the first shaft hole 2013 and the second shaft hole 2014 can sequentially pass through the first through hole 2011 and the second through hole 2012, and the inflation valve cavity 202 and the inflation valve rod 201 are correspondingly communicated with an annular gap formed between two second sealing rings 502, as shown in fig. 5; further, after the inflation valve cavity 202 slides a certain distance in the axial direction, the first through hole 2011 and the second through hole 2012 can be respectively matched with a second sealing ring on the peripheral wall surfaces at two sides in the axial direction, and at this time, the first shaft hole 2013 and the second shaft hole 2014 are not communicated with each other, as shown in fig. 6.
Further, a valve mouth 203 is correspondingly arranged at the air pipe connecting end of the inflation valve rod 201, the outer diameter of one end of the valve mouth is larger than that of the rod body and can be correspondingly connected with the inflation valve rod 201, the other end of the valve mouth can be correspondingly connected with an inflation pipe, and a pressing cover 204 is preferably arranged at the connecting end part corresponding to the inflation pipe, so that the inflation pipe can be stably connected with the valve mouth 203; furthermore, a stepped hole is axially formed at one end of the valve nozzle 203, which is correspondingly connected with the inflation valve rod 201, and the valve nozzle 203 can be in threaded connection with the air pipe connecting end of the inflation valve rod 201; further preferably, the valve nozzle 203 can be sleeved on the outer circumference of the rod body by an end portion after being correspondingly connected with the inflation valve rod 201, and correspondingly, a groove is formed in the inner circumferential wall surface of the stepped hole of the valve nozzle 203 along the circumferential direction, and a second sealing ring 502 is correspondingly arranged, so that the valve nozzle 203 and the inflation valve rod 201 can be sufficiently sealed after being correspondingly connected with each other.
Obviously, after the inflation assembly 2 is assembled correspondingly, the inflation valve cavity 202 is correspondingly arranged between the end of the valve nozzle 203 and the first boss 2015, and the length of the inflation valve cavity 202 is smaller than the distance between the valve nozzle 203 and the first boss 2015, and then the length of the inflation valve cavity 202 and the arrangement position of the second sealing ring 502 in the inflation valve cavity 202 are preferably arranged, so that after the end of the inflation valve cavity 202 is correspondingly abutted against the end of the valve nozzle 203, the first through hole 2011 can be correspondingly communicated with the second through hole 2012, and after the end of the inflation valve cavity 202 is correspondingly abutted against the first boss 2015, the first through hole 2011 can be correspondingly isolated from the second through hole 2012, as shown in fig. 5 and 6, and then by controlling the axial movement of the inflation valve cavity 202, the connection or disconnection between the inflation air pipe and the valve body 1 can be realized.
Further, the air bleeding assembly 3 in the preferred embodiment is shown in fig. 5 and 6, and comprises an air bleeding valve stem 301, an air bleeding valve cavity 302, a connector 303 and a silencer 304.
Specifically, the deflation valve rod 301 in the preferred embodiment is disposed corresponding to the inflation valve rod 201, and the structure thereof may preferably be the same as that of the inflation valve rod 201, that is, a third through hole 3011, a fourth through hole 3012, a third shaft hole 3013, a fourth shaft hole 3014 and a second boss 3015 are correspondingly disposed as shown in fig. 4, one end of the deflation valve rod 301 may be correspondingly connected to the second connecting hole 1022 by a thread, the deflation valve cavity 302 may be coaxially sleeved on the outer periphery of the deflation valve rod 301, a certain gap is provided between the inner peripheral wall surface of the deflation valve cavity 302 and the outer peripheral wall surface of the deflation valve rod 301, and three second sealing rings 502 disposed on the inner peripheral wall surface of the deflation valve cavity 302 at intervals abut against the outer peripheral wall surface of the deflation valve rod 301, and then the corresponding communication or corresponding isolation of the third through hole 3011 and the fourth through hole 3012 may be realized by the axial movement of the deflation valve cavity 302.
Further, in the preferred embodiment, a connector 303 is disposed at an end of the bleed valve rod 301 away from the valve body 1, the connector 303 is a cylindrical structure having an outer diameter larger than the outer diameter of the rod body of the bleed valve rod 301, and a through hole penetrating through end faces at two sides is axially formed in the connector 303, the through hole is a stepped hole in the preferred embodiment, the inner diameter of the end having a larger inner diameter of the stepped hole is larger than the outer diameter of the bleed valve rod 301, and an inner thread is disposed on an inner circumference of the end having a smaller inner diameter of the stepped hole, so that the connector 303 can be correspondingly connected with the end of the bleed valve rod 301 through a thread, and one end of the connector 303; correspondingly, a groove is formed in the inner peripheral wall surface of the end with the larger inner diameter of the stepped hole along the circumferential direction, and a second sealing ring 502 is correspondingly arranged in the groove, so that the connector 3 can be connected with the end part of the air release valve rod 301 in a sealing mode.
Further, in the preferred embodiment, the length of the relief valve cavity 302 is set corresponding to the distance between the connector 3 and the second boss 3015, and when the end of the relief valve cavity 302 abuts against the connector 3, the third through hole 3011 and the fourth through hole 3012 are correspondingly communicated, and when the end of the relief valve cavity 302 abuts against the second boss 3015, the third through hole 3011 and the fourth through hole 3012 are correspondingly spaced, so as to communicate or isolate the third shaft hole 3013 and the fourth shaft hole 3014. Further preferably, a silencer 304 is coaxially arranged at one end of the connecting head 3, which is away from the valve body 1, so that gas in the sealed container 6 can sequentially pass through the gas path hole 103, the third shaft hole 3013 and the fourth shaft hole 3014 and be exhausted by the silencer 304, the sound in the exhaust process is reduced, and the experimental environment in the air tightness detection process is improved.
Further preferably, in order to facilitate assembly of the components in the preferred embodiment, knurling is provided on the outer periphery of the respective components, including but not limited to the first boss 2015, the second boss 3015, the valve nozzle 203, the inflation valve cavity 202 and the deflation valve cavity 302; further, the first seal ring 501, the second seal ring 502 and the third seal ring 503 in the preferred embodiment may be nitrile rubber O-ring seals respectively, which have better corrosion resistance, tear resistance, compression deformation resistance and wear resistance, and can fully meet the sealing requirements of the components.
Further, after the air tightness detecting device in the preferred embodiment is assembled, as shown in fig. 1, it can be correspondingly matched on the connection port of the sealed container 6, as shown in fig. 9 to 11, and further, the sealing performance of the sealed container 6 can be preferably detected by the steps in fig. 12, wherein the steps of the detection are as follows:
s1: correspondingly connecting the first connecting end 101 of the valve body 1 to a connecting port of the sealed container 6, correspondingly connecting an inflation tube for inflation to the valve nozzle 203 of the inflation assembly 2, and pressing the inflation tube by using the pressing cover 204 to ensure the connection airtightness between the inflation tube and the valve nozzle 203;
s2: adjusting the air tightness detection device to be in an inflation state, namely sliding the inflation valve cavity 202 to a position abutting against the end face of the valve nozzle 203, and sliding the deflation valve cavity 202 to a position abutting against the second boss 3015, as shown in fig. 9, at this time, the first shaft hole 2013 and the second shaft hole 2014 are correspondingly communicated, the third shaft hole 3013 and the fourth shaft hole 3014 are not communicated, and then the sealed container 6 can be inflated from the valve nozzle 203;
s3: when the gas in sealed container 6 is introduced to a certain amount, the inflation from inflation assembly 2 is stopped, and inflation valve cavity 202 is slid to a position abutting first boss 2015, and the position of deflation assembly 3 is kept unchanged in step S2, as shown in fig. 10. At this time, the gas path hole 103 is separated from the second shaft hole 2012 of the inflation module 2 and the fourth shaft hole 3012 of the deflation module 3, the inflation module 2 cannot inflate the sealed container 6, the gas in the sealed container 6 cannot be released from the deflation module 3, the state is maintained for a certain time, and the pressure measurement module 4 correspondingly detects whether the gas pressure in the sealed container 6 changes, so as to detect the tightness of the sealed container 6;
s4: after the pressure measurement of the pressure measurement component 4 is completed, the state of the inflation component 2 is kept unchanged, the position of the deflation valve cavity 302 is adjusted, so that the deflation valve cavity 302 abuts against the end part of the connector 303, as shown in fig. 11, at this time, the third shaft hole 3013 and the fourth shaft hole 3014 are correspondingly communicated, the gas in the sealed container 6 can be discharged through the gas path hole 103, the third shaft hole 3013, the fourth shaft hole 3014 and the silencer 304 in sequence, and then the gas tightness detection device is correspondingly taken down from the sealed container 6, so that the tightness detection of the sealed container 6 is completed;
s5: the steps S1 to S4 are repeated to complete batch inspection of the plurality of sealed containers 6.
The air tightness detection device suitable for the sealed container can effectively realize the sealing connection with the sealed container by optimally arranging the components such as the valve body, the inflation component, the deflation component, the pressure measurement component and the like, complete the processes of accurately inflating, stably deflating, accurately measuring the pressure and the like into the sealed container, can accurately realize the air tightness detection of the sealed container under the condition that the sealed container is only provided with one connecting port, has simple structure and simple and convenient operation, can greatly improve the accuracy and the efficiency of the detection of the sealed container, reduces the difficulty of the detection of the air tightness of the sealed container, avoids the arrangement of an additional connecting port on the sealed container, reduces the cost of the air tightness detection of the sealed container, and has better application prospect and popularization value.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The air tightness detection device suitable for the sealed container comprises a pressure measuring assembly, and is characterized by further comprising a valve body, an inflation assembly and a deflation assembly; wherein,
the valve body is of a long rod-shaped structure, an air path hole penetrating through two end faces is formed between the two end faces of the valve body along the axial direction, and the two ends of the valve body along the axial direction are respectively a first connecting end and a second connecting end; the first connecting end can be correspondingly connected with a connecting port on the sealed container, the peripheral wall surface of the second connecting end is correspondingly provided with a first connecting hole and a second connecting hole which penetrate through the gas path hole, and a third connecting hole which is coaxially arranged on the end surface of the second connecting end, which is far away from the first connecting end, and corresponds to the gas path hole is used for correspondingly connecting the pressure measuring assembly in the third connecting hole;
the inflation assembly can be correspondingly connected to the first connecting hole, the deflation assembly can be correspondingly connected to the second connecting hole, and the inflation assembly and the deflation assembly respectively comprise a valve rod and a valve cavity which is coaxially sleeved on the periphery of the valve rod and can slide along the axial direction; wherein,
the valve rod is in a long rod shape, one end of the valve rod can be connected to the corresponding connecting hole in a matching mode, the other end of the valve rod is connected with an inflation tube or atmosphere for inflation, blind holes with certain length, namely a first shaft hole and a second shaft hole which are not communicated with each other, are respectively formed in the two ends of the valve rod along the axial direction, and a plurality of first through holes communicated with the first shaft hole and a plurality of second through holes communicated with the second shaft hole are respectively formed in the peripheral direction of the valve rod in an annular mode; the valve cavity is of a cylindrical structure with a circular through hole, the inner diameter of the valve cavity is larger than the outer diameter of the valve rod, at least three annular grooves are formed in the inner peripheral wall surface of the valve cavity at intervals along the axial direction, first sealing rings which are abutted against the outer peripheral wall surface of the valve rod are embedded into the annular grooves respectively, the distance between at least one pair of adjacent first sealing rings is larger than the axial distance between the first through hole and the second through hole, and the first through hole and the second through hole can be communicated or disconnected by axial sliding of the valve cavity; and then, through the sliding control of the two valve cavities, the inflation process and the deflation process of the sealed container can be correspondingly finished, and the pressure measuring assembly can correspondingly monitor the air pressure in the inflated sealed container, so that the air tightness detection of the sealed container is realized.
2. The airtightness detection apparatus for the sealed container according to claim 1, wherein the first connection hole and the second connection hole are respectively provided at both sides of the second connection end, and both connection holes are coaxially opened.
3. The airtightness detection apparatus suitable for a sealed container according to claim 1 or 2, wherein a boss is provided on an outer periphery of at least one of the valve rods in a circumferential direction, and the boss can abut against an outer peripheral wall surface of the valve body with an end surface after the valve rod is connected to the corresponding connection hole.
4. The tightness detection device suitable for the sealed container according to claim 3, wherein a groove is formed on an end surface of the boss facing the valve body along a circumferential direction, the first sealing ring is embedded in the groove correspondingly, and the thickness of the first sealing ring is larger than the depth of the groove.
5. The airtightness detection apparatus according to any one of claims 1 to 4, wherein the first through holes provided in the outer peripheral wall surface of at least one of the valve rods are provided in plural numbers at intervals in a circumferential direction.
6. The airtightness detection apparatus according to any one of claims 1 to 5, wherein the second through holes provided in the outer peripheral wall surface of at least one of the valve rods are provided in a plurality at intervals in a circumferential direction.
7. The airtightness detection apparatus according to any one of claims 1 to 6, wherein the first through hole and the second through hole are opened in a radial direction, and the two through holes are opened respectively corresponding to ends of the two shaft holes which are close to each other.
8. The air tightness detecting device suitable for the sealed container according to any one of claims 1 to 7, wherein a valve nozzle is arranged on one end of the valve rod in the inflating assembly, which faces away from the valve body, and the inflating tube is correspondingly connected to the valve nozzle.
9. The tightness detection device suitable for the sealed container according to any one of claims 1 to 8, wherein a connector is disposed on one end of the valve rod of the air bleeding assembly away from the valve body, and a silencer is correspondingly disposed on the connector.
10. An air-tightness detection method suitable for a sealed container, which is realized by using the air-tightness detection device suitable for a sealed container as claimed in any one of claims 1 to 9, and comprises the following steps:
s1: correspondingly connecting the first connecting end of the valve body to a connecting port of the sealed container, and connecting the valve rod of the inflation assembly with the inflation tube;
s2: controlling the two valve cavities to slide along the axial direction, and enabling the two shaft holes on the valve rod of the inflation assembly to be communicated with each other, and the two shaft holes on the valve rod of the deflation assembly not to be communicated with each other;
s3: inflating the sealed container by the inflation tube, monitoring the air pressure in the sealed container in real time by the pressure measuring assembly, stopping inflating when the air pressure reaches a certain value, and controlling the valve cavity of the inflation assembly to slide along the axial direction so that two shaft holes on the valve rod of the inflation assembly are not communicated with each other;
s4: monitoring whether the air pressure in the sealed container changes or not by using the pressure measuring assembly so as to correspondingly judge the air tightness of the sealed container;
s5: after the pressure measuring assembly monitors for a certain time, the valve cavity of the air bleeding assembly is controlled to slide along the axial direction, so that the two shaft holes on the valve rod of the air bleeding assembly are connected with each other, the gas in the sealed container is discharged, and the air tightness detection of the sealed container is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910112003.7A CN109738135A (en) | 2019-02-13 | 2019-02-13 | A kind of air-tightness detection device and air-tightness detection method suitable for sealing container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910112003.7A CN109738135A (en) | 2019-02-13 | 2019-02-13 | A kind of air-tightness detection device and air-tightness detection method suitable for sealing container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109738135A true CN109738135A (en) | 2019-05-10 |
Family
ID=66367359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910112003.7A Pending CN109738135A (en) | 2019-02-13 | 2019-02-13 | A kind of air-tightness detection device and air-tightness detection method suitable for sealing container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109738135A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982381A (en) * | 2020-08-13 | 2020-11-24 | 中国兵器工业第五九研究所 | Device for detecting and adjusting gas pressure in gas microenvironment |
| CN112326159A (en) * | 2020-11-19 | 2021-02-05 | 深圳市草履虫生物科技有限公司 | Sample container air tightness detection device |
| CN117537989A (en) * | 2023-12-05 | 2024-02-09 | 江苏蓝英石业有限公司 | Leakage detection device of industrial kiln |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1062293A (en) * | 1996-08-20 | 1998-03-06 | Ootaki Gas Kk | Piping method of gas meter and airtightness testing means used for piping thereof |
| CN201754118U (en) * | 2010-06-28 | 2011-03-02 | 北汽福田汽车股份有限公司 | Tightness detection device and tightness detection system |
| CN203148639U (en) * | 2013-02-22 | 2013-08-21 | 广西巴马丽琅饮料有限公司 | Leakage detecting device of empty barrel |
| CN203892665U (en) * | 2014-06-09 | 2014-10-22 | 湖北航天技术研究院总体设计所 | Three-way airtight quick inflation valve |
| CN205719445U (en) * | 2016-05-05 | 2016-11-23 | 广东美的暖通设备有限公司 | Gas leak detection device |
| CN107664229A (en) * | 2017-10-31 | 2018-02-06 | 航宇救生装备有限公司 | A kind of cylinder valve component with pressure monitoring |
| CN107677435A (en) * | 2017-09-26 | 2018-02-09 | 无锡赛盈动力科技有限公司 | The air-tightness detection method and detection means of a kind of controller |
| CN108151988A (en) * | 2017-12-13 | 2018-06-12 | 中山火炬职业技术学院 | A kind of detection method of high-precision air tightness detection device |
| CN108896250A (en) * | 2018-05-08 | 2018-11-27 | 中国航发湖南动力机械研究所 | Air-tightness detection device and air-tightness detection method |
-
2019
- 2019-02-13 CN CN201910112003.7A patent/CN109738135A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1062293A (en) * | 1996-08-20 | 1998-03-06 | Ootaki Gas Kk | Piping method of gas meter and airtightness testing means used for piping thereof |
| CN201754118U (en) * | 2010-06-28 | 2011-03-02 | 北汽福田汽车股份有限公司 | Tightness detection device and tightness detection system |
| CN203148639U (en) * | 2013-02-22 | 2013-08-21 | 广西巴马丽琅饮料有限公司 | Leakage detecting device of empty barrel |
| CN203892665U (en) * | 2014-06-09 | 2014-10-22 | 湖北航天技术研究院总体设计所 | Three-way airtight quick inflation valve |
| CN205719445U (en) * | 2016-05-05 | 2016-11-23 | 广东美的暖通设备有限公司 | Gas leak detection device |
| CN107677435A (en) * | 2017-09-26 | 2018-02-09 | 无锡赛盈动力科技有限公司 | The air-tightness detection method and detection means of a kind of controller |
| CN107664229A (en) * | 2017-10-31 | 2018-02-06 | 航宇救生装备有限公司 | A kind of cylinder valve component with pressure monitoring |
| CN108151988A (en) * | 2017-12-13 | 2018-06-12 | 中山火炬职业技术学院 | A kind of detection method of high-precision air tightness detection device |
| CN108896250A (en) * | 2018-05-08 | 2018-11-27 | 中国航发湖南动力机械研究所 | Air-tightness detection device and air-tightness detection method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982381A (en) * | 2020-08-13 | 2020-11-24 | 中国兵器工业第五九研究所 | Device for detecting and adjusting gas pressure in gas microenvironment |
| CN112326159A (en) * | 2020-11-19 | 2021-02-05 | 深圳市草履虫生物科技有限公司 | Sample container air tightness detection device |
| CN117537989A (en) * | 2023-12-05 | 2024-02-09 | 江苏蓝英石业有限公司 | Leakage detection device of industrial kiln |
| CN117537989B (en) * | 2023-12-05 | 2024-08-20 | 江苏蓝英石业有限公司 | Leakage detection device of industrial kiln |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109738135A (en) | A kind of air-tightness detection device and air-tightness detection method suitable for sealing container | |
| CN210398050U (en) | Piston pressure measuring joint | |
| CN208719497U (en) | A kind of explosion-proof valve for inflating spool, fast aeration detection box leakproofness | |
| CN113390586B (en) | Airtight check out test set for manometer | |
| CN113513615A (en) | Pneumatic multifunctional pressure scanning valve | |
| CN219589873U (en) | Pneumatic micro-leakage tester | |
| CN213579991U (en) | Sample container air tightness detection device | |
| US11518203B2 (en) | Multifunctional external inflating valve and mounting method for loading device of inflating valve | |
| CN203672574U (en) | Aluminium casting airtightness detection apparatus | |
| CN212082738U (en) | Air tightness detection device for nail passing hole | |
| CN112326159A (en) | Sample container air tightness detection device | |
| CN201673018U (en) | Expansion type round hole sealability detection auxiliary device | |
| CN208887861U (en) | A kind of device for detecting sealability suitable for solenoid valve gas valve | |
| CN114483716B (en) | Three-way reversing isolation valve | |
| CN111120878A (en) | Pipeline air tightness detection device | |
| CN111006823A (en) | Self-sealing test flange and sealing monitoring method | |
| CN218973734U (en) | Air tightness detection device for faucet shell | |
| CN219977663U (en) | Double O-ring type airtight inspection device | |
| CN213779390U (en) | Air tightness detection mechanism | |
| CN103868645A (en) | Fixture for TPMS (tire pressure monitoring system) detection | |
| CN118362254B (en) | Nondestructive airtight detection device for pipeline | |
| CN220568185U (en) | Vulcanizing machine central mechanism pressure testing device | |
| CN221376954U (en) | T2G single clutch double-cavity airtight testing device | |
| CN116793592B (en) | Sealing element detection method by using sealing element detection device | |
| US12007303B2 (en) | Seal state detecting device and seal state detecting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190510 |
|
| RJ01 | Rejection of invention patent application after publication |