CN206799169U - A kind of helium purification blocks being embedded into leak detector - Google Patents
A kind of helium purification blocks being embedded into leak detector Download PDFInfo
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- CN206799169U CN206799169U CN201720144120.8U CN201720144120U CN206799169U CN 206799169 U CN206799169 U CN 206799169U CN 201720144120 U CN201720144120 U CN 201720144120U CN 206799169 U CN206799169 U CN 206799169U
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Abstract
The utility model discloses a kind of helium purification blocks being embedded into leak detector, the leak detector includes leak detection module and helium purification blocks, the outlet side of the helium purification blocks is connected with the inlet end for module of hunting leak by pipeline, the inlet end of the helium purification blocks is connected with the outlet side for module of hunting leak by pipeline, the helium purification blocks include the first surge tank that inlet end is connected with the outlet side for module of hunting leak, the first purification devices that the outlet side of inlet end and the first surge tank passes through the first pipeline communication, the helium purity discharged according to it at pure gas end that goes out of first purification devices optionally connects with the inlet end of leak detection module or the inlet end of the first surge tank.The helium purification blocks belong to a part for leak detector, and compact-sized, floor space is small.
Description
Technical field
The purification art of helium is the utility model is related to, more particularly to a kind of helium purifying mould being embedded into leak detector
Block.
Background technology
Air conditioner two-unit wants the easily leak site such as butt welding contact to carry out leak detection work before assembling process.At present, it is domestic large-scale
The wide model of air-conditioner manufacturer uses helium mass spectrum leak detection method (this method sensitivity highest).Because largely emptying high-purity in production process
Helium cause helium resource largely to waste, cost is very big, therefore most of two device leak test plants are equipped with online return at this stage
Receiving unit, the helium recovery that it is more than 80% by the purity in chamber of hunting leak by recovery channel that its principle, which is, then set by supercharging
The standby helium by recovery carries out pressurized storage to recycle.Helium concentration tester is housed on reclaimer, works as recycling
Helium purity when being less than 80% or so, will discharge a part of low-purity helium to avoid impacting leak detection sensitivities and be used in combination
High-purity helium is supplemented it, to ensure the sensitivity of leak test plant.
By being compared to conventional helium purification process, high pressure low temperature condensation-adsorption method is related to high pressure and is difficult to entirely
Automated condtrol, pressure swing adsorption method helium loss in purge process is big and obtained purity is low, although being inhaled using low-temperature liquefaction
Attached method and membrane separation process can meet the requirement that air conditioner two-unit is hunted leak to helium purity and production scene, reach circulation after purification
Use, helium purity after purification reaches as high as more than 99%, but low temperature process is freezed using Cryo Refrigerator or liquid nitrogen refrigerating agent
The impurity such as nitrogen and oxygen therein are separated to obtain higher degree helium, shortcoming is that separation process needs constantly to provide low-temperature receiver,
Observable index is higher, and the volume of equipment is relatively large.
Also, circulated helium of hunting leak on the market using equipment is mostly independent equipment, it is necessary to independent recovery, purifying, storage
Space is deposited, control system is also single.One side occupation area of equipment is big, the placement of equipment for factory, recovery
Mode etc., which has the part such as inconvenience, the purity instrument of another aspect device interior, needs overlapping investment, cost increase.
Utility model content
Main purpose of the present utility model is in a kind of helium purification blocks being embedded into leak detector of offer, one side energy
Enough make helium purity after purification high, be no longer independent equipment on the other hand inside the Module-embedding to leak detector, user
Just, area occupied is small.
To achieve the above objectives, the technical solution adopted in the utility model is：A kind of helium for being embedded into leak detector is pure
Change module, the leak detector includes leak detection module and helium purification blocks, outlet side and the leak detection mould of the helium purification blocks
The inlet end of block is connected by pipeline, and the inlet end of the helium purification blocks and the outlet side for module of hunting leak are connected by pipeline
Connect, it is characterised in that the helium purification blocks include inlet end with leak detection module outlet side be connected the first surge tank, enter
The outlet side of gas end and the first surge tank is pure by the first purification devices of the first pipeline communication, going out for first purification devices
The helium purity that gas end is discharged according to it optionally connects with the inlet end of leak detection module or the inlet end of the first surge tank.
Preferably, first purification devices include at least one membrane separator.
Preferably, first pipeline is provided with compression pump, and the compression pump selects according to the pressure in the first surge tank
The unlatching of property.
Preferably, the rear end positioned at compression pump on first pipeline and on gas flow direction is provided with flow
Meter.
Preferably, the rear end positioned at compression pump on first pipeline and on gas flow direction is provided with purification mould
Block.
Preferably, the pure gas end that goes out of first purification devices passes through the second pipe optionally inlet end with stripping pattern block
Or first surge tank inlet end connection, gas purity detector is connected with second pipe.
Preferably, in addition to the second purification devices for being connected with the tail gas end of the first purification devices of inlet end, described second
The pure gas end that goes out of purification devices is connected with the inlet end of the first surge tank.
Preferably, second purification devices include at least one membrane separator.
Preferably, it is provided with the second surge tank on the pipeline between first purification devices and the second purification devices.
Compared with prior art, the utility model has the advantages that：
1) above-mentioned helium purification blocks are a parts for leak detector, are no longer single equipment, it is no longer necessary to which purchase is independent
Helium purifier apparatus, and can be shared for some components, have the advantages that easy to use, compact-sized, dropped simultaneously
Low production cost；
2) the leak detection module composition circulatory system of above-mentioned helium purification blocks and leak detector, the helium of the low-purity for module of hunting leak
Gas is most of all by being recycled after purification blocks purifying, and only helium content is very after membrane separation for sub-fraction
Small tail gas is discharged, and effectively reduces the waste of helium；
3) above-mentioned helium purification blocks are purified using two-stage, and second level purifying is for the relatively low first order purifying of purity
The UF membrane tail gas that device is discharged after purification is purified, and is purified for the higher use first order of purity, is effectively improved
The utilization rate of equipment.
Brief description of the drawings
Fig. 1 is the schematic diagram according to a preferred embodiment of the present utility model.
Embodiment
Describe to be used to disclose the utility model so that those skilled in the art can realize the utility model below.Retouch below
Preferred embodiment in stating is only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.
A kind of helium purification blocks being embedded into leak detector as shown in Figure 1, the leak detector include leak detection module, helium
Gas purification blocks and controller, the outlet side of the helium purification blocks and the inlet end of the low-pressure tank of leak detection module pass through pipe
Road is connected, and the inlet end of the helium purification blocks is connected with the outlet side of the pressure pan for module of hunting leak by pipeline.
The helium purification blocks include the first surge tank 1 of inlet end connection leak detection module outlet side, buffered with first
The outlet side of tank 1 is connected by the first connected purification devices of the first pipeline 17, with the tail gas end of the first purification devices by pipeline
The second purification devices connect, on first pipeline 17 along the direction of air inlet set gradually with compression pump 2, cleaning module 3,
Flowmeter 4, the compression pump 2 is controlling the flow velocity of the helium in purification blocks.The cleaning module 3 can be filter,
Filtered to impurity such as the solid particles in the helium to entrance.Flowmeter 4 is detecting the gas in the first pipeline 17
Flow.
First purification devices can be membrane separator 5, and the second purification devices can be membrane separator 6 and 7, UF membrane
Device is purified using membrane separation technique to helium, and membrane separation technique is prior art, is no longer described in detail herein.
The pure gas end that goes out of membrane separator 5 is connected by second pipe 18, the 3rd pipeline 181 with the air inlet end for module of hunting leak,
It is connected by second pipe 18, the 4th pipeline 182 with the first surge tank 1.
The gas purity detector 10 being connected with controller signals is provided with second pipe 18 to detect from film to divide
From the purity of the gas for going out pure gas end discharge of device 5, it is respectively arranged with and controls on the 3rd pipeline 181 and the 4th pipeline 182
The magnetic valve 12 and magnetic valve 14 of device signal connection, when the purity that gas purity detector 10 detects meets the requirements, (purity surpasses
Cross certain value, preferably 95%) when, controller opens magnetic valve 12, closes magnetic valve 14, in second pipe 18 by purifying
Helium enter in leak detection module hunting leak；When the purity that gas purity detector 10 detects is undesirable, control
Device processed closes magnetic valve 12, opens magnetic valve 14, and purified helium is turned again in the first surge tank 1 in second pipe 18
Purified again.
The tail gas end of the membrane separator 5 is connected by needle valve 8 with the inlet end of the second surge tank 9, the second surge tank 9
Inlet end of the outlet side respectively with membrane separator 6 and 7 be connected.The pure gas end that goes out of the membrane separator 6 and 7 passes through the 5th pipeline
19 are connected with the inlet end of the first surge tank 1, and ball valve 16 is provided with the 5th pipeline 19.Because the progress of membrane separator 6 and 7 is pure
The tail gas that the helium of change is discharged by membrane separator 5, in order to ensure its purity, from the helium for going out pure gas end discharge of membrane separator 6 and 7
Gas, which needs to re-enter into the first surge tank 1, re-starts purifying.The tail gas discharged from the tail gas end of membrane separator 6 and 7 is straight
Connect and be discharged in air, no longer purified, be to be provided with needle valve 15 on the pipeline that membrane separator 6 connects with 7 tail gas ends.
Simultaneously as the tail gas purity discharged from the tail gas end of membrane separator 5 is low, can be subtracted using two one side of membrane separator 6 and 7
Get a breathing space the speed of body, on the one hand can mitigate the purifying pressure of membrane separator, and then purity and purifying speed can be improved.When
So, the second purification blocks can use multiple membrane separators further to improve purity and purifying speed.
The compression pump 1 is connected with controller signals, and use is provided with the surge tank 9 of the first surge tank 1 and second
With the pressure sensor of detection gas pressure, the pressure sensor is connected with controller signals, when in the first surge tank 1
When the pressure value that pressure sensor detects is more than the pressure value of setting, controller opens compression pump 1 and starts to perform purification work.
The flowmeter 4 is connected with controller signals, is also equipped with what is be connected with controller signals on the 3rd pipeline 181
Flowmeter 13.
The ball valve 11 in parallel with gas purity detector 10, ball valve 11 and 16, needle valve 8 are provided with second pipe 18
It is manually operated with 15 uses, the occasion of pipeline is manually closed for carrying out the needs such as some maintenances.
The advantages of general principle of the present utility model, principal character and the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply principle of the present utility model, the utility model also has respectively on the premise of the spirit and scope of the utility model is not departed from
Kind changes and improvements, these changes and improvements are both fallen within claimed the scope of the utility model.The requires of the utility model
Protection domain defined by appended claims and its equivalent.
Claims (9)
1. a kind of helium purification blocks being embedded into leak detector, the leak detector includes leak detection module and helium purification blocks,
The outlet side of the helium purification blocks is connected with the inlet end for module of hunting leak by pipeline, the air inlet of the helium purification blocks
The outlet side with module of hunting leak is held to be connected by pipeline, it is characterised in that the helium purification blocks include inlet end and leak detection
The outlet side of the first surge tank, inlet end and the first surge tank that the outlet side of module connects passes through the first of the first pipeline communication
Purification devices, the helium purity discharged according to it at pure gas end of going out of first purification devices are optionally entered with leak detection module
The inlet end of gas end or the first surge tank connects.
2. a kind of helium purification blocks being embedded into leak detector according to claim 1, it is characterised in that described first
Purification devices include at least one membrane separator.
3. a kind of helium purification blocks being embedded into leak detector according to claim 1, it is characterised in that described first
Pipeline is provided with compression pump, and the compression pump selectively turns on according to the pressure in the first surge tank.
4. a kind of helium purification blocks being embedded into leak detector according to claim 3, it is characterised in that described
Rear end on one pipeline and positioned at compression pump on gas flow direction is provided with flowmeter.
5. a kind of helium purification blocks being embedded into leak detector according to claim 3, it is characterised in that described
Rear end on one pipeline and positioned at compression pump on gas flow direction is provided with cleaning module.
A kind of 6. helium purification blocks being embedded into leak detector according to claim any one of 1-5, it is characterised in that
The pure gas end that goes out of first purification devices passes through the second pipe optionally inlet end or the first surge tank with stripping pattern block
Inlet end connection, gas purity detector is connected with second pipe.
A kind of 7. helium purification blocks being embedded into leak detector according to claim 6, it is characterised in that also include into
The second purification devices that gas end is connected with the tail gas end of the first purification devices, second purification devices go out pure gas end and first
The inlet end connection of surge tank.
8. a kind of helium purification blocks being embedded into leak detector according to claim 7, it is characterised in that described second
Purification devices include at least one membrane separator.
9. a kind of helium purification blocks being embedded into leak detector according to claim 7 or 8, it is characterised in that described
The second surge tank is provided with pipeline between first purification devices and the second purification devices.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720144120.8U CN206799169U (en) | 2017-02-17 | 2017-02-17 | A kind of helium purification blocks being embedded into leak detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720144120.8U CN206799169U (en) | 2017-02-17 | 2017-02-17 | A kind of helium purification blocks being embedded into leak detector |
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| CN206799169U true CN206799169U (en) | 2017-12-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744751A (en) * | 2017-02-17 | 2017-05-31 | 安徽万瑞冷电科技有限公司 | A kind of helium purification blocks being embedded into leak detector |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744751A (en) * | 2017-02-17 | 2017-05-31 | 安徽万瑞冷电科技有限公司 | A kind of helium purification blocks being embedded into leak detector |
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