CN106289672B - Pressure-regulating device and detection device - Google Patents
Pressure-regulating device and detection device Download PDFInfo
- Publication number
- CN106289672B CN106289672B CN201610769035.0A CN201610769035A CN106289672B CN 106289672 B CN106289672 B CN 106289672B CN 201610769035 A CN201610769035 A CN 201610769035A CN 106289672 B CN106289672 B CN 106289672B
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- branch
- fluid
- pressure
- internal diameter
- fluid channel
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
Abstract
The present invention provides a kind of pressure-regulating device and detection device.Pressure-regulating device according to the present invention includes: to be connected to fluid source into manifold；First fluid channel enters manifold fluid with this via the first branch and connect；Second fluid channel enters manifold fluid with this via second branch and connect, wherein the pressure-regulating device further include: third branch goes out from the first fluid channel branch in the downstream of the first branch and fluidly connects with discharge manifold；And the 4th branch, go out in the downstream of the second branch from the second fluid channel branch and is fluidly connected with the discharge manifold.The pressure difference in third branch and the adjustable first fluid channel of the 4th branch and second fluid channel that pressure-regulating device and detection device according to the present invention pass through setting, so that the fluid in the high channel of pressure is escaped into discharge manifold and given off via third branch or the 4th branch, the accuracy of detection test is improved.
Description
Technical field
The present invention relates to a kind of pressure-regulating device and with the detection device of the pressure-regulating device, and more particularly to use
In the detection device detected to dialyzer product.
Background technique
It liquid and measures the pressure change after ventilation/logical liquid by the way that product is ventilated/led to and checks whether product leaks extensively
Applied in multiple industries.For example, when kidney is completed with dialyzer, needing integrally to do one to dialyzer in medical field
Secondary ventilation/logical liquid leak test, to find substandard product.
In inspection method in the prior art, the dialyzate entrance for the kidney dialyzer that will be detected, dialyzate outlet are equal
Sealing, is then passed through the gas/liquid of both constant-pressures by blood entry port, and for example blood exit measure again gas/
The pressure of liquid, if difference is more than the threshold value of setting, judges that the dialyzer is by the pressure measured compared with a preset value
Substandard product.
However, due to ventilated in actually detected every time/lead to liquid the case where can difference, even if the same dialyzer product
The pressure value measured when measuring twice is also not fully identical, and therefore, with after the threshold value comparison of fixed setting, can exist will
Qualified product is mistaken for the case where rejected product.
Summary of the invention
The present invention is proposed in order to solve the above problem, and the present invention is intended to provide one kind can accurately examine product
The detection device and method of survey.
Of the invention is contemplated that, (its each parameter is ideal shape as benchmark for one standardized product of setting or reference product
State), treat testing product ventilate/lead to liquid detection when, using identical gas/liquid source of supply treat testing product and
Reference product supply test gas/liquid, the gas for flowing through product to be detected and reference product is measured by differential pressure pickup simultaneously
Body/liquid pressure difference judges product detected for substandard product if the pressure difference measured is more than preset value.
For this purpose, the present invention provides a kind of pressure-regulating device, can advantageously ensure that be supplied to product to be detected and
The pressure of the gas/liquid of reference product is identical, to improve the accuracy of detection.
Pressure-regulating device according to the present invention includes: to be connected to fluid source into manifold；First fluid channel, via
The first branch enters manifold fluid with this and connect；Second fluid channel enters manifold fluid with this via second branch and connect,
In, the pressure-regulating device further include: third branch, the downstream of the first branch from the first fluid channel branch go out and with
Discharge manifold fluidly connects；And the 4th branch, the downstream of the second branch go out from the second fluid channel branch and with this
Discharge manifold fluidly connects.
Further, the internal diameter of the internal diameter of the third branch and the 4th branch is respectively less than the internal diameter in the first fluid channel
With the internal diameter in the second fluid channel.
Further, the internal diameter of the internal diameter of the third branch and the 4th branch is respectively less than the first branch and this second
The internal diameter on road.
Further, the internal diameter of the first branch and the internal diameter of the second branch are equal, and the internal diameter of the third branch
It is equal with the internal diameter of the 4th branch.
Further, the internal diameter of the first branch and the second branch is the internal diameter of the third branch and the 4th branch
1.5 to 2 times.
The present invention also provides a kind of detection devices comprising above-mentioned pressure-regulating device, wherein the of reference product
One fluid input interface is fluidly coupled to the first fluid discharge coupling in the first fluid channel, the second fluid of product to be detected
Input interface is fluidly coupled to the second fluid discharge coupling in the second fluid channel.
Further, which further includes balanced valve, and the balanced valve is by the third branch and the 4th branch and is somebody's turn to do
Discharge manifold disconnects or connection.
Further, which further includes the pressure difference measurement dress for being connected to the product to be detected and the reference product
Set, the pressure difference measuring device measurement respectively via the first fluid input interface the internal flow of the reference product fluid with
And via the second fluid input interface the fluid of the internal flow of the product to be detected pressure difference.
Further, which is gas source.
Pressure-regulating device and detection device according to the present invention supply simultaneously by the fluid from same flow body source of supply
Before should be to product to be detected and reference product, by the third branch and the 4th branch of setting, can further it adjust first-class
Pressure difference in body channel and second fluid channel, so that the fluid in the high channel of pressure is via third branch or the 4th branch
It escapes and discharges, so that it is guaranteed that the fluid in first fluid channel and second fluid channel is being supplied to product to be detected and reference
Pressure having the same when product improves the accuracy of detection test.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 schematically shows the detection device according to an embodiment of the present invention for kidney dialyzer.
Fig. 2 schematically shows the pressure-regulating devices of detection device shown in Fig. 1.
Fig. 3 schematically shows the cross-sectional view of the cylinder manifold of pressure-regulating device shown in Fig. 2, wherein clearly illustrate through
It adjusts and has the first fluid channel and second fluid channel of uniform pressure substantially in exit.
The above drawings include the following reference numerals:
2, with reference to dialyzer；4, dialyzer to be detected；
22, first fluid input interface；42, second fluid input interface；
10, detection device；30, dialyzate mouth plugging mechanism；40, blood mouth plugging mechanism；50, pressure-regulating device；
52, cylinder manifold；53, bracket；54, fluid supplies interface；60, differential pressure pickup；602, fixed frame；
540, into manifold；542, first fluid channel；544, second fluid channel；
5422, the first branch；5442, second branch；5424, third branch；5444, the 4th branch；
5426, first fluid exports；5446, second fluid exports；546, discharge manifold；
55, into valve；56, balanced valve；57, dump valve；
562, first fluid discharge coupling；564, second fluid discharge coupling
70, pedestal；72, upper table surface；74, following table.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Below by taking the detection device for being detected to kidney with dialyzer as an example, to pressure-regulating device of the invention and
Detection device is described.
Unlike the prior art, in the inventive solutions, using identical gas/liquid source of supply to be checked
Survey dialyzer and with reference to dialyzer supply test gas/liquid, pass through differential pressure pickup simultaneously measure flow through product to be detected and
The pressure difference of the gas/liquid of reference product judges product detected for not if the pressure difference measured is more than preset value
Qualified products.
Fig. 1 schematically shows the detection device 10 according to an embodiment of the present invention for kidney dialyzer.As schemed
The detection device shown can be used for simultaneously detecting two dialyzer products, below only for the inspection with one of dialyzer
Survey is illustrated.
As shown in Figure 1, the reference dialyzer 2 of perfect condition is fixed on the upper table surface 72 of the pedestal 70 of detection device 10,
Wherein, it has been sealed straight up and with reference to the dialyzate inlet and outlet holding of dialyzer 2, and a blood mouth also keeps close
Envelope.Dialyzer to be detected 4 on assembly line is remained fixed at down by a series of adjustment and the adjustment of positioning tool and positioning
On table top 74.The dialyzate inlet and outlet of dialyzer 4 to be detected keeps straight down and can pass through dialyzate mouth plugging mechanism
30 keep sealing, and one of blood mouth can keep sealing by blood mouth plugging mechanism 40.It can dialyse as a result, to reference
Device 2 and another the respective unencapsulated blood mouth of dialyzer to be detected 4 are passed through detection gas or liquid, are adjusted and are filled by pressure
It sets 50 adjustings and is supplied to the detection gas of dialyzer to be detected and reference dialyzer 2 or the pressure of liquid, and utilize pressure difference sensing
Device 60 measures the pressure difference of the gas or liquid that flow in reference dialyzer 2 and dialyzer to be detected 4, judges dialysis to be detected
Device 4 whether there is gas leakage or the phenomenon of leakage, and judge that it is qualified product or rejected product.For example, differential pressure pickup 60 can connect
Near to another blood mouth of reference dialyzer 2 and dialyzer to be detected 4.
Fig. 2 schematically shows the pressure-regulating devices of detection device shown in Fig. 1.Fig. 3 schematically shows Fig. 2 institute
Show the cross-sectional view of the cylinder manifold of pressure-regulating device, wherein clearly illustrating through adjusting and having uniform pressure substantially in exit
First fluid channel 542 and second fluid channel 544.
In this embodiment, pressure-regulating device 50 includes being formed with to input to the first fluid of reference dialyzer 2 respectively
The second fluid input interface of interface (being in this embodiment one of blood mouth) 22 and dialyzer to be detected 4 is (in the reality
Applying is one of blood mouth in example) 42 supply detection gas or liquid first fluid channel 542 and second fluid channel 544
Cylinder manifold 52.Cylinder manifold 52 is mounted on detection device 10 by bracket 53.Differential pressure pickup 60 can be solid by fixed frame 602
It is scheduled on the cylinder manifold 52 of pressure-regulating device 50.Certainly, differential pressure pickup 60 can also be fixed on appointing on detection device 10
What his suitable position.
As Fig. 3 is clearly shown, be formed through on cylinder manifold 52 fluid supply interface 54 be connected to detection gas or
Fluid supply enters manifold 540, is divided into first fluid channel via the first branch 5422 and second branch 5442 into manifold 540
542 and second fluid channel 544.The first fluid in first fluid channel 542 exports the second of 5426 and second fluid channel 544
Fluid outlet 5446 is connected to via first fluid discharge coupling 562 and second fluid discharge coupling 564 with reference to dialyzer 2 respectively
First fluid input interface 22 and dialyzer to be detected 4 second fluid input interface 42.
Applicants have discovered that in actual use, even if using identical detection gas or fluid supply, first fluid outlet
5426 and second fluid outlet 5446 at pressure may also can have differences.This will lead to subsequent use differential pressure pickup 60 and surveys
There are errors for pressure difference between the dialyzer to be detected and reference dialyzer of amount, consequently, it is possible to will be mistakenly by qualified products
It is mistaken for substandard product.
For this purpose, pressure-regulating device 50 according to an embodiment of the present invention further includes third branch 5424 and the 4th branch
5444, third branch 5424 branches out in the downstream of the first branch 5422 from first fluid channel 542, and the 4th branch 5444 is
The downstream of two branches 5442 is branched out from second fluid channel 544, and third branch 5424 and the 4th branch 5444 can be with discharge discriminations
Pipe 546 is in fluid communication.In this embodiment, it is equipped in entering manifold 540 and enters valve 55, be used to open or close the first branch
5422 and second branch 5442, to provide detection gas or liquid to first fluid channel 542 and second fluid channel 544, or
Person disconnection detection gas or liquid supply when not needing detection.Detection device 10 may also include balanced valve 56, by third branch
Road 5424 and the 4th branch 5444 are switched on or switched off with discharge manifold 546.In addition, dump valve 57 is set to discharge manifold 546, with
Fluid discharge for that will flow in discharge manifold 546.
When carrying out leak detection to dialyzer using detection device according to the present invention, fluid supply interface 54 is connected
It to detection gas or fluid supply and opens into valve 55, detection gas or liquid pass through fluid supply interface 54 and flows into discrimination
It is divided into two-way in pipe 540 and via the first branch 5422 and second branch 5442, i.e. first fluid channel 542 and second fluid is logical
Road 544.Theoretically, the pressure of first fluid channel 542 and gas or liquid in second fluid channel 544 should be identical, but
In actual conditions, due to various manufactures or connecting factors, the first fluid outlet 5426 in first fluid channel 542 and second fluid
Pressure at the second fluid outlet 5446 in channel 544 may have differences.
Pressure-regulating device 50 through the invention and the third branch 5424 and the 4th branch 5444 particularly by setting,
This pressure gap may make to reduce.Specifically, when detection gas or liquid are via the first branch 5422 and second branch 5442
Into after first fluid channel 542 and second fluid channel 544, the balanced valve 56 of opening makes third branch 5424 and the 4th
Road 5444 is connected to first fluid channel 542 and second fluid channel 544 respectively, if the Fluid pressure in the two channels is deposited
A part of gas or liquid in difference, the fluid channel of pressure upper side will be via corresponding third branch 5424 or the
Four branches 5444 enter discharge manifold 546, so that first fluid is logical in 5444 downstream of third branch 5424 and the 4th branch
Road 542 and gas in second fluid channel 544 or fluid pressure keep essentially identical, i.e. first fluid outlet 5426 and second
Pressure at fluid outlet 5446 keeps essentially identical.Wherein, by opening dump valve 57, from third branch 5424 or the 4th
Road 5444, which flows into this part excessive gas of discharge manifold 546 or liquid, can be expelled to outside.
Preferably, in pressure-regulating device 50, the first branch 5422 and the internal diameter having the same of second branch 5442, the
Three branches 5424 and the internal diameter having the same of the 4th branch 5444, first fluid channel 542 and second fluid channel 544 have phase
Same internal diameter.It is further preferred that the internal diameter that has of third branch 5424 and the 4th branch 5444 is less than first fluid channel 542 and the
The internal diameter of two fluid channels 544 and/or internal diameter less than the first branch 5422 and second branch 5442.Optionally, the first branch
5422 and second branch 5442 internal diameter it is identical as the internal diameter in first fluid channel 542 and second fluid channel 544.
Preferably, the internal diameter of the first branch 5422 and second branch 5442 is third branch 5424 and the 4th branch 5444
1.5 to 2 times of internal diameter.
Preferably, using gas carries out above-mentioned detection.
Pressure-regulating device and detection device according to the present invention supply simultaneously by the fluid from same flow body source of supply
First can should be further adjusted by the third branch and the 4th branch of setting to dialyzer to be detected and with reference to before dialyzer
Pressure difference in fluid channel and second fluid channel, so that the fluid in the high channel of pressure is via third branch or the 4th
Road escapes into discharge manifold and gives off, so that it is guaranteed that the fluid in first fluid channel and second fluid channel is being supplied to
Pressure having the same, improves the accuracy of detection test when dialyzer to be detected and reference dialyzer.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of pressure-regulating device, the pressure-regulating device includes: to be connected to fluid source into manifold；First fluid is logical
Road is connect with described into manifold fluid via the first branch；Second fluid channel enters manifold with described via second branch
It fluidly connects, which is characterized in that the pressure-regulating device further include:
Third branch goes out from the first fluid channel branch in the downstream of the first branch and connects with discharge manifold fluid
It connects；And
4th branch, the downstream of the second branch from the second fluid channel branch go out and with the discharge manifold fluid
Connection.
2. pressure-regulating device according to claim 1, which is characterized in that the internal diameter of the third branch and the described 4th
The internal diameter of branch is respectively less than the internal diameter in the first fluid channel and the internal diameter in the second fluid channel.
3. pressure-regulating device according to claim 2, which is characterized in that the internal diameter of the third branch and the described 4th
The internal diameter of branch is respectively less than the internal diameter of the first branch and the second branch.
4. pressure-regulating device according to claim 3, which is characterized in that the internal diameter of the first branch and described second
The internal diameter of branch is equal, and the internal diameter of the internal diameter of the third branch and the 4th branch is equal.
5. pressure-regulating device according to claim 4, which is characterized in that the first branch and the second branch
Internal diameter is 1.5 to 2 times of the internal diameter of the third branch and the 4th branch.
6. a kind of detection device, which is characterized in that including pressure-regulating device described in any one of claims 1 to 5,
In, the first fluid input interface of reference product is fluidly coupled to the first fluid discharge coupling in the first fluid channel, to
The second fluid input interface of testing product is fluidly coupled to the second fluid discharge coupling in the second fluid channel.
7. detection device according to claim 6, which is characterized in that the detection device further includes balanced valve, described flat
The third branch and the 4th branch are disconnected or are connected to the discharge manifold by weighing apparatus valve.
8. detection device according to claim 6, which is characterized in that the detection device further include be connected to it is described to be checked
The pressure difference measuring device of product and the reference product is surveyed, the pressure difference measuring device measurement is defeated via the first fluid respectively
Incoming interface the fluid of the internal flow of the reference product and via the second fluid input interface described to be detected
The pressure difference of the fluid of the internal flow of product.
9. detection device according to claim 6, which is characterized in that the fluid source is gas source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610769035.0A CN106289672B (en) | 2016-08-30 | 2016-08-30 | Pressure-regulating device and detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610769035.0A CN106289672B (en) | 2016-08-30 | 2016-08-30 | Pressure-regulating device and detection device |
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| Publication Number | Publication Date |
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| CN106289672A CN106289672A (en) | 2017-01-04 |
| CN106289672B true CN106289672B (en) | 2019-01-08 |
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| CN201610769035.0A Active CN106289672B (en) | 2016-08-30 | 2016-08-30 | Pressure-regulating device and detection device |
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| WO2007136109A1 (en) * | 2006-05-24 | 2007-11-29 | Cosmo Instruments Co., Ltd. | Leak inspection method and leak inspector |
| CN201532292U (en) * | 2009-09-11 | 2010-07-21 | 彭光正 | Pneumatic circuit of multifunctional gas-tightness detector |
| CN103115739A (en) * | 2013-01-25 | 2013-05-22 | 北京爱社时代科技发展有限公司 | High-precision cylinder airtightness detection unit |
| CN104122053A (en) * | 2014-06-27 | 2014-10-29 | 中北大学 | Multi-path sharing sealing performance detecting device |
| CN204228364U (en) * | 2014-09-05 | 2015-03-25 | 深圳市奥奇机电科技有限公司 | A kind of air tightness detection apparatus |
| CN206019957U (en) * | 2016-08-30 | 2017-03-15 | 迈得医疗工业设备股份有限公司 | Pressure-regulating device and testing equipment |
-
2016
- 2016-08-30 CN CN201610769035.0A patent/CN106289672B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007136109A1 (en) * | 2006-05-24 | 2007-11-29 | Cosmo Instruments Co., Ltd. | Leak inspection method and leak inspector |
| CN201532292U (en) * | 2009-09-11 | 2010-07-21 | 彭光正 | Pneumatic circuit of multifunctional gas-tightness detector |
| CN103115739A (en) * | 2013-01-25 | 2013-05-22 | 北京爱社时代科技发展有限公司 | High-precision cylinder airtightness detection unit |
| CN104122053A (en) * | 2014-06-27 | 2014-10-29 | 中北大学 | Multi-path sharing sealing performance detecting device |
| CN204228364U (en) * | 2014-09-05 | 2015-03-25 | 深圳市奥奇机电科技有限公司 | A kind of air tightness detection apparatus |
| CN206019957U (en) * | 2016-08-30 | 2017-03-15 | 迈得医疗工业设备股份有限公司 | Pressure-regulating device and testing equipment |
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| CN106289672A (en) | 2017-01-04 |
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