CN208420301U - High-accuracy adjustable leak hole - Google Patents
High-accuracy adjustable leak hole Download PDFInfo
- Publication number
- CN208420301U CN208420301U CN201820923483.6U CN201820923483U CN208420301U CN 208420301 U CN208420301 U CN 208420301U CN 201820923483 U CN201820923483 U CN 201820923483U CN 208420301 U CN208420301 U CN 208420301U
- Authority
- CN
- China
- Prior art keywords
- limit relay
- measuring head
- high limit
- precision
- pressure gauge
- 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.)
- Expired - Fee Related
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- Measuring Fluid Pressure (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model belongs to halogen vacuum leak hunting apparatus field, propose high-accuracy adjustable leak hole, comprising: pressure volume pot, high limit relay, measuring head and high-precision pressure gauge, one end of the pressure volume pot has fill port, the other end is connected to by connecting tube with the inlet end of high limit relay, the outlet side of the high limit relay is connected to measuring head, and the measuring head is provided with test mouth；The high-precision pressure gauge is connected to the position between high limit relay, measuring head.The utility model structure is simple, easy to use, and leak rate precision reaches 0.1g/year, and leak rate is reliable and stable, is influenced by temperature small；By adjusting the size of high limit relay and the length of quartz glass capillary, adjustable leak rate reaches the adjustable purpose of precision.
Description
Technical field
The utility model relates to halogen vacuum leak detector fields, in particular to high-accuracy adjustable leak hole.
Background technique
It is traditional infiltration membrane technology, vacuum of getting up compared with channel-style leak hole that the leak hole used both at home and abroad at present, which mostly uses,
Response speed is slow, and is easy to be influenced by temperature, and needs when in use to be modified the variation of temperature, the otherwise change of temperature
Change can impact the result of product.The leak rate of referance leak be it is fixed, cannot flexibly cope with various different situations.
Utility model content
It is easy to use the utility model proposes a kind of high-accuracy adjustable leak hole, leak rate can be adjusted flexibly to adapt to not
With requirement, leak rate precision is high and stablizes.
The technical solution of the utility model is achieved in that
High-accuracy adjustable leak hole, comprising: pressure volume pot, high limit relay, measuring head and high-precision pressure gauge, institute
The one end for stating pressure volume pot has fill port, and the other end is connected to by connecting tube with the inlet end of high limit relay, described
The outlet side of high limit relay is connected to measuring head, and the measuring head is provided with the test mouth for refrigerant outflow；The high-precision
Position between pressure gauge and high limit relay, measuring head is connected to.
Further, the measuring head, high-precision pressure gauge pass through quartz glass capillary and high limit relay respectively
Connection.
Further, the outlet side of the high limit relay connects a threeway, the quartz glass capillary difference
It is detachably connected with threeway, the quartz glass capillary is to be detachably connected with high-precision pressure gauge, measuring head.
Further, the range of the high-precision pressure gauge is 0.0~1.0kPa.
Further, the precision of the high limit relay is ± 1%.
Further, the pressure volume pot, connecting tube, high limit relay, threeway, quartz glass capillary, high-precision
Spend the junction gap filling AB glue between pressure gauge, measuring head.
The utility model structure is simply easy to use, and leak rate precision reaches 0.1g/year, and leak rate is reliable and stable, by temperature
Influence it is small；By adjusting the size of high limit relay and the length of quartz glass capillary, adjustable leak rate reaches essence
Spend adjustable purpose.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the high-accuracy adjustable leak hole structural schematic diagram that the utility model certain embodiments provide.
In figure, 1, fill port；2, pressure volume pot；3, connecting tube；4, high limit relay；5, threeway；6, quartz glass
Capillary；7, measuring head；8, high-precision pressure gauge.
Specific embodiment
The utility model is described below based on embodiment, but the utility model is not restricted to these implementations
Example.In order to avoid obscuring the essence of the utility model, there is no narrations in detail for well known method, process, process, element.
In addition, it should be understood by one skilled in the art that provided herein attached drawing be provided to explanation purpose, and
What attached drawing was not necessarily drawn to scale.
Unless the context clearly requires otherwise, "include", "comprise" otherwise throughout the specification and claims etc. are similar
Word should be construed as the meaning for including rather than exclusive or exhaustive meaning；That is, be " including but not limited to " contains
Justice.
In the description of the present invention, it should be understood that term " first ", " second " etc. are used for description purposes only,
It is not understood to indicate or imply relative importance.In addition, in the description of the present invention, unless otherwise indicated, it is " more
It is a " it is meant that two or more.
This application provides a kind of high-accuracy adjustable leak holes, as shown in Figure 1, comprising: pressure volume pot 2 subtracts in high precision
One end of pressure valve 4, measuring head 7 and high-precision pressure gauge 8, the pressure volume pot 2 has fill port 1, and the other end passes through connection
Pipe 3 is connected to the inlet end of high limit relay 4, and the outlet side of the high limit relay 4 is connected to measuring head 7, the survey
Examination head 7 is provided with the test mouth for refrigerant outflow；Portion between the high-precision pressure gauge 8 and high limit relay 4, measuring head 7
Position connection.
Specifically, one end of connecting tube 3 is welded on pressure volume pot 2, and the other end passes through screw thread and high limit relay 4
It is connected.
Further, the measuring head 7, high-precision pressure gauge 8 are depressurized by quartz glass capillary 6 and high-precision respectively
Valve 4 is connected to.
It so, it is possible by the flow control of refrigerant in minimum range, cooperation high-precision pressure gauge 8 and high-precision depressurize
Valve 4 improves leak rate precision, and can carry out fine adjustment to the leak rate of refrigerant, is not acted upon by temperature changes.
Further, the outlet side of the high limit relay 4 connects a threeway 5, can be threaded connection, the stone
English capillary glass tube 6 is detachably connected with threeway 5 respectively, the quartz glass capillary 6 and high-precision pressure gauge 8, measuring head 7
It is to be detachably connected.
Refrigerant can be divided into two-way by threeway 5, and the pressure size of high limit relay 4 is adjustable；Quartz glass capillary
Pipe 6 can be replaced with adjustment length, and then adjust leak rate.
It in a specific embodiment, further include shell, pressure volume pot 2, connecting tube 3, high limit relay 4, height
Precision pressure table 8 and quartz glass capillary 6 are all set in enclosure interior, and are detachably connected with shell.Fill port 1 and test
Mouth is stretched out by enclosure interior.Shell can be opened, and each component can be replaced.Shell can be metal material.
Further, the range of the high-precision pressure gauge 8 is 0.0~1.0kPa.In this way, refrigerant that can be minimum to flow
Pressure carries out accurate measurements.
Further, the precision of the high limit relay 4 is ± 1%.In this way, accurate tune can be carried out to the pressure of refrigerant
Section.
Further, the pressure volume pot 2, connecting tube 3, high limit relay 4, threeway 5, quartz glass capillary 6,
Junction gap filling AB glue between high-precision pressure gauge 8, measuring head 7.
The utility model high-accuracy adjustable leak hole, by refrigerant by then leading in 1 charged pressure container tank 2 of fill port
It crosses connecting tube 3 and enters the progress pressure regulation of high limit relay 4, refrigerant is divided into two-way by threeway 5 after decompression, all the way via quartz
Capillary glass tube 6 passes to high-precision pressure gauge 8 and carries out pressure monitoring, and another way is connected to test mouth, shape by quartz glass capillary 6
At quantitative source of leaks.
Under a certain pressure, there are pressure differences at the both ends of quartz glass capillary 6, can carry out gas leakage outward.
In actual use, high-purity refrigerant is passed through in 1 charged pressure container tank 2 of fill port, in pressure volume pot 2
When pressure reaches 0.3Mpa, fill port 1 is closed.Refrigerant in pressure volume pot 2 by after high limit relay 4 by quartz glass
Capillary 6 shunts outflow.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (6)
1. high-accuracy adjustable leak hole characterized by comprising pressure volume pot (2), high limit relay (4), measuring head
(7) and high-precision pressure gauge (8), one end of the pressure volume pot (2) have fill port (1), and the other end passes through connecting tube (3)
It is connected to the inlet end of high limit relay (4), the outlet side of the high limit relay (4) is connected to measuring head (7), described
Measuring head (7) is provided with the test mouth for refrigerant outflow；The high-precision pressure gauge (8) and high limit relay (4), measuring head
(7) the position connection between.
2. high-accuracy adjustable leak hole according to claim 1, which is characterized in that the measuring head (7), high-precision pressure
Table (8) is connected to by quartz glass capillary (6) with high limit relay (4) respectively.
3. high-accuracy adjustable leak hole according to claim 2, which is characterized in that the high limit relay (4) goes out
Gas end connects a threeway (5), and the quartz glass capillary (6) is detachably connected with threeway (5) respectively, the quartz glass
Capillary (6) is to be detachably connected with high-precision pressure gauge (8), measuring head (7).
4. high-accuracy adjustable leak hole according to claim 1, which is characterized in that the amount of the high-precision pressure gauge (8)
Journey is 0.0~1.0kPa.
5. high-accuracy adjustable leak hole according to claim 1, which is characterized in that the essence of the high limit relay (4)
Degree is ± 1%.
6. high-accuracy adjustable leak hole according to claim 1, which is characterized in that the pressure volume pot (2), connecting tube
(3), high limit relay (4), threeway (5), quartz glass capillary (6), high-precision pressure gauge (8), between measuring head (7)
Junction gap filling AB glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820923483.6U CN208420301U (en) | 2018-06-14 | 2018-06-14 | High-accuracy adjustable leak hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820923483.6U CN208420301U (en) | 2018-06-14 | 2018-06-14 | High-accuracy adjustable leak hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208420301U true CN208420301U (en) | 2019-01-22 |
Family
ID=65112375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820923483.6U Expired - Fee Related CN208420301U (en) | 2018-06-14 | 2018-06-14 | High-accuracy adjustable leak hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208420301U (en) |
-
2018
- 2018-06-14 CN CN201820923483.6U patent/CN208420301U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190122 Termination date: 20210614 |