CN203011656U - Multi-path refrigeration leakage detection equipment - Google Patents
Multi-path refrigeration leakage detection equipment Download PDFInfo
- Publication number
- CN203011656U CN203011656U CN 201220712024 CN201220712024U CN203011656U CN 203011656 U CN203011656 U CN 203011656U CN 201220712024 CN201220712024 CN 201220712024 CN 201220712024 U CN201220712024 U CN 201220712024U CN 203011656 U CN203011656 U CN 203011656U
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- CN
- China
- Prior art keywords
- leakage detection
- communicated
- freezing
- liquid nitrogen
- cold trap
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- Expired - Fee Related
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Abstract
Disclosed in the utility model is multi-path refrigeration leakage detection equipment that comprises multiple paths of refrigeration leakage detection devices. Each path of refrigeration leakage detection device is characterized in that a vacuum gauge is communicated with one end of a U-shaped tube; the other end of the U-shaped tube is communicated with one end of a valve; and the other end of the valve is communicated with a tested container by a conduit. The multiple U-shaped tubes are place inside a cold trap; a lifting device is connected to the lower end of the cold trap; and the internal space of the cold trap is filled with liquid nitrogen. According to the utility model, the water vapour in the conduit is condensed by the cold trap processing, so that the influence on the leakage rate measurement by the air discharging amount inside the sealed space can be eliminated. And because the plurality of U-shaped tubes are centralized and placed in the cold trap filled with the liquid nitrogen, simultaneous measurement on leakage rates of a plurality of sealed spaces can be realized, thereby saving the liquid nitrogen and improving the work efficiency.
Description
Technical field
The utility model belongs to leak test plant, is specially a kind of freezing leak test plant of multichannel that simultaneously slip of a plurality of confined spaces is detected.
Background technology
Leak detection technology is mainly used in the sealing of the containers such as vacuum tank, pressure vessel, liquid storage container is surveyed, and common method mainly contains mass spectrum leak detection method, vacuum meter leak detecting, air-sensitive leak detecting, halogen leak detection etc.And also there is no general effective ways for the ultralow Leak Detection of the confined space that is consisted of by a plurality of potential leakage points.
The utility model content
For addressing the above problem, the utility model provides a kind of multichannel freezing leak test plant.
The technical solution of the utility model is: the freezing leak test plant of a kind of multichannel, comprise the freezing leakage detection apparatus of multichannel, the freezing leakage detection apparatus in every road comprises that an end of vacuum meter and U-shaped pipe is communicated with, and an end of the other end of U-shaped pipe and valve is communicated with, and the other end of valve is communicated with by conduit and tested container.
A plurality of U-shaped pipes are placed on a cold-trap inside, are connected with jacking gear in the lower end of cold-trap, and liquid nitrogen is housed in cold-trap.
The number of described freezing leakage detection apparatus is ten four the tunnel.
Described conduit adopts copper tube.
The freezing leak test plant of multichannel provided by the utility model is processed by cold-trap the steam in conduit is carried out condensation, gets rid of the impact that inner self discharge quantity of confined space is measured slip; A plurality of U-shaped pipes are concentrated be positioned in the cold-trap that liquid nitrogen is housed, realized simultaneously liquid nitrogen has been saved in the measurement of a plurality of confined space slips, improved work efficiency.
Description of drawings
Fig. 1 is the arrangenent diagram of the freezing leak test plant of the utility model multichannel;
Fig. 2 is the structural representation of the freezing leakage detection apparatus in every road of the present utility model.
Wherein:
1 vacuum meter 2 U-shaped pipes
3 valve 4 conduits
5 cold-trap 6 jacking gears
7 liquid nitrogen 8 tested containers.
Embodiment
Below, by reference to the accompanying drawings the concrete structure of the freezing leak test plant of the utility model multichannel is described further:
As shown in Figure 1, 2, the freezing leak test plant of a kind of multichannel comprises the freezing leakage detection apparatus of multichannel, and the freezing leakage detection apparatus in every road comprises that an end of vacuum meter 1 and U-shaped pipe 2 is communicated with, one end of the other end of U-shaped pipe 2 and valve 3 is communicated with, and the other end of valve 3 is communicated with by conduit 4 and tested container 8.
A plurality of U-shaped pipes 2 are placed on cold-trap 5 inside, are connected with jacking gear 6 in the lower end of cold-trap 5, and liquid nitrogen 7 is housed in cold-trap 5.
In the present embodiment, the number of freezing leakage detection apparatus is ten four the tunnel, and conduit 2 adopts copper tube.
Leak detection step of the present utility model is as follows:
The force value that (ⅰ) tested container is evacuated to vacuum meter 1 is P
0The time, stop finding time;
(ⅱ) valve-off 3, and U-shaped pipe 2 is immersed in the interior liquid nitrogen 7 of cold-trap 5 at this moment, and the pressure of observing vacuum meter 1 changes, and records the pressure minimum P of freezing final vacuum meter 1
1, dose liquid nitrogen 7 in time in this process cold-trap 5, the liquid level of cold-trap 5 interior liquid nitrogen is remained unchanged;
(ⅲ) start jacking gear 6, drive cold-trap 5 and move down, make U-shaped pipe 2 break away from liquid nitrogen, after U-shaped pipe 2 returns to room temperature, open valve 3, tested container 8 is communicated with U-shaped pipe 2;
(ⅳ) after 1 hour, the operation of repeating step (ⅱ), (ⅲ) is completed for the second time and is measured, and obtains the pressure minimum P of freezing final vacuum meter 1
2, measured the interval 1 hour at every turn, carry out successively six times and measure, obtain six pressure value P
1, P
2, P
3, P
4, P
5, P
6
If ((P
2-P
1)+(P
3-P
2)+(P
4-P
3)+(P
5-P
4)+(P
6-P
5))/5＜0.09Pa, the sealing of tested container is good.
Freezing measurement is to be treated to the metering system on basis with cold-trap.It is a kind of cooling device that cold-trap is processed, and the U-shaped pipe is placed in refrigerant, and during by the U-shaped pipe, the material that boiling point is high becomes liquid when gas, and low-boiling material still exists with the form of gas.The freezing leak test plant of multichannel provided by the utility model is processed by cold-trap the steam in conduit is carried out condensation, gets rid of the impact that inner self discharge quantity of confined space is measured slip; A plurality of U-shaped pipes are concentrated be positioned in the cold-trap that liquid nitrogen is housed, realized simultaneously liquid nitrogen has been saved in the measurement of a plurality of confined space slips, improved work efficiency.
Claims (3)
1. freezing leak test plant of multichannel, comprise the freezing leakage detection apparatus of multichannel, the freezing leakage detection apparatus in every road comprises that an end of vacuum meter (1) and U-shaped pipe (2) is communicated with, one end of the other end of U-shaped pipe (2) and valve (3) is communicated with, the other end of valve (3) is communicated with by conduit (4) and tested container (8), a plurality of U-shaped pipes (2) are placed on a cold-trap (5) inside, are connected with jacking gear (6) in the lower end of cold-trap (5), and liquid nitrogen (7) is housed in cold-trap (5).
2. the freezing leak test plant of multichannel according to claim 1, it is characterized in that: the number of described freezing leakage detection apparatus is ten four the tunnel.
3. the freezing leak test plant of multichannel according to claim 1, is characterized in that: described conduit (4) employing copper tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220712024 CN203011656U (en) | 2012-12-21 | 2012-12-21 | Multi-path refrigeration leakage detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220712024 CN203011656U (en) | 2012-12-21 | 2012-12-21 | Multi-path refrigeration leakage detection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203011656U true CN203011656U (en) | 2013-06-19 |
Family
ID=48603239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220712024 Expired - Fee Related CN203011656U (en) | 2012-12-21 | 2012-12-21 | Multi-path refrigeration leakage detection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203011656U (en) |
-
2012
- 2012-12-21 CN CN 201220712024 patent/CN203011656U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20130619 Termination date: 20191221 |