CN108405501A - Blowing pipeline device and process gas convey cleaning systems - Google Patents

Blowing pipeline device and process gas convey cleaning systems Download PDF

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Publication number
CN108405501A
CN108405501A CN201810574914.7A CN201810574914A CN108405501A CN 108405501 A CN108405501 A CN 108405501A CN 201810574914 A CN201810574914 A CN 201810574914A CN 108405501 A CN108405501 A CN 108405501A
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CN
China
Prior art keywords
diaphragm valve
pipeline
valve
pressure
blowing pipeline
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
Application number
CN201810574914.7A
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Chinese (zh)
Inventor
邝亮亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Ever Sail Semiconductor Equipment Co Ltd
SHANGHAI ZHENGFAN TECHNOLOGY Co Ltd
Original Assignee
Jiangsu Ever Sail Semiconductor Equipment Co Ltd
SHANGHAI ZHENGFAN TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Ever Sail Semiconductor Equipment Co Ltd, SHANGHAI ZHENGFAN TECHNOLOGY Co Ltd filed Critical Jiangsu Ever Sail Semiconductor Equipment Co Ltd
Priority to CN201810574914.7A priority Critical patent/CN108405501A/en
Publication of CN108405501A publication Critical patent/CN108405501A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027Cleaning the internal surfaces; Removal of blockages
    • B08B9/032Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0328Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid

Abstract

The invention discloses a kind of blowing pipeline devices and process gas to convey cleaning systems, belongs to pipe cleaning system technical field.Blowing pipeline device includes negative-pressure vacuum module, the module includes sequentially connected first non-return valve, first pressure gauge and the first diaphragm valve, it further include the branch line being connected between first pressure gauge and the first diaphragm valve, the second diaphragm valve is provided on branch line, the free end of branch line connects vacuum pump.The gas in equipment all can be discharged for the vacuum pumping to equipment for negative-pressure vacuum module.The device further includes positive pressure purging module, the module includes sequentially connected third diaphragm valve, second pressure gauge, surge tank, the 4th diaphragm valve and the second non-return valve, surge tank can store nitrogen, when nitrogen has sufficiently large impact force, can easily clean away residual impurity.The configuration of the present invention is simple, the cleaning time is short, and effect is good, and nitrogen consumption is few, and production cost is low.

Description

Blowing pipeline device and process gas convey cleaning systems
Technical field
The present invention relates to pipe cleaning system technical fields more particularly to a kind of blowing pipeline device and process gas to convey Cleaning systems.
Background technology
It needs largely to use high-purity process gas in production process of semiconductor, such as:Chlorine, phosphine, hydrogen chloride etc. four More than ten plant high-purity gas.With the continuous expansion of semiconductor production scale, need that a large amount of process gas pipeline is installed.Erector The step of skill gas piping is:Site dimension is pressed first and carries out blanking, i.e.,:Segmentation cutting, is bent stainless steel pipeline;Then it carries out The installation of stainless steel pipeline is connected between gas bomb cabinet, gas distributing valve case and production equipment board by argon arc welding;Then Gas piping pressurize test is carried out, this is a very crucial step, and the purpose is to prove that this pipeline can be protected within the regular hour The fixed pressure that keeps steady is constant, and usually to continue the pressure that 24 hours keep in pipeline is 150psi (psi:pound per squreinch:A kind of pressure unit);After pressurize test passes, helium leak test test is carried out, leak rate is less than 1.0X10-9mbar.l/ S is qualification.Then pipeline moisture content, oxygen, particle test are purged and carried out with high pure nitrogen, until meeting technology requirement, this Pipeline can just come into operation.Since cleanliness factor is the principal element for influencing end product, so carrying out particle to process pipe Technical testing continues with water oxygen content measuring if counting micro particles test passes.Purging can be discharged inside pipe fitting and accessory All micro oil, moisture and particles.If these harmful substances, which enter process gas pipeline, will damage product.
Therefore, after semiconductor equipment factory is completed on special letter shoot road, after finishing air tightness test, to meet client To the purity requirements of equipment pipeline, moisture, oxygen, granule content can be done to pipeline and is tested.The current way of factory is Dewar Tank installs nitrogen purification device, nitrogen purification device outlet connection pressure reducing valve and pressure gauge as source purge gas on gas outlet.Connect again It connects gas piping high pure nitrogen and persistently purges connection moisture, oxygen, grain analyser after two hours to it, when moisture, oxygen Content is divided to be less than 10ppb, particle of the size less than 0.01um is qualified when being less than 1pcs/ft3.In general, to reach this standard, need It continuously to purge 24 hours or more.Encounter pipeline it is longer when also need to purge the longer time, and to present in valve member some Branch and turning can not clean up.The nitrogen amount not only consumed in this way is big, increases construction cost, and has delayed a large amount of treasured The expensive time, influence job schedule.
Invention content
One of the objects of the present invention is to provide a kind of blowing pipeline devices and process gas to convey cleaning systems, to solve Local branch and turning can not be cleaned in the prior art, are swept into requirement up to standard and are expended a large amount of nitrogen, and the cleaning time is long, increases Substance and time cost.
To achieve the above object, following technical scheme is provided:
Blowing pipeline device provided by the invention, including negative-pressure vacuum module and positive pressure purge module;
The negative-pressure vacuum module include pass sequentially through the first pipeline head and the tail connection the first non-return valve, first pressure gauge and First diaphragm valve further includes the branch line being connected between the first pressure gauge and first diaphragm valve, the branch The second diaphragm valve is provided on pipeline, the free end of the branch line connects vacuum pump;
Positive pressure purging module include the third diaphragm valve for passing sequentially through the head and the tail connection of the second pipeline, second pressure gauge, Surge tank, the 4th diaphragm valve and the second non-return valve.
Further, it is additionally provided with temperature control heating device in the surge tank.
Further, the first pressure gauge and the second pressure gauge are all made of pointer pressure.
Further, first diaphragm valve, second diaphragm valve, the third diaphragm valve and the 4th diaphragm valve It is all made of manual diaphragm valve arrangement.
Further, further include first substrate and second substrate, the negative-pressure vacuum module setting is in the first substrate On, the positive pressure purging module is arranged on the second substrate.
Further, first non-return valve and first diaphragm valve are connected by VCR connectors and first pipeline It connects, second diaphragm valve is connect by VCR connectors with the branch line.
Further, the third diaphragm valve, the 4th diaphragm valve and second non-return valve by VCR connectors with Second piping connection.
Further, first pipeline, second pipeline and the branch line are stainless steel pipes.
The present invention also provides a kind of process gas to convey cleaning systems, including process gas conveying equipment and above-mentioned technology Scheme any one of them blowing pipeline device, the first pipeline in the blowing pipeline device is close to one end of the first non-return valve It is connect with the gas outlet of the process gas conveying equipment;The second pipeline in the blowing pipeline device is close to third diaphragm valve One end connect with Nitrogen source gases, the other end is connect with the air inlet of the process gas conveying equipment.
Further, the other end of first pipeline is connect with garbage collection tank.
Compared with prior art, blowing pipeline device and process gas provided by the invention convey cleaning systems, including negative Vacuum module is pressed, negative-pressure vacuum module is used in the vacuum pumping to process gas conveying equipment before, until the first pressure Pressure value on power table vacuumizes completions to -14.7psi, and process vacuumizing in this way, can will be in process gas conveying equipment Gas is all discharged.The blowing pipeline device further includes positive pressure purging module, is provided with surge tank in positive pressure purging module, buffers Tank has energy storage effect, then opens third diaphragm valve, so that the nitrogen in Nitrogen source gases is stored in surge tank, when in second pressure gauge When pressure value reaches 80psi, the nitrogen in surge tank has sufficiently large impact force, open at this time the 4th diaphragm valve and first every Film valve can easily clean away the residual impurity in process gas conveying equipment pipeline.The blowing pipeline of the present invention Apparatus structure is simple, and the cleaning time is short, and effect is good, and nitrogen consumption greatly reduces, and production cost substantially reduces.In addition, buffering Temperature control heating device is set in tank, the nitrogen in surge tank can be heated, hot nitrogen can be by impurity and moisture one Secondary property is all removed, and is substantially reduced and is cleaned the time, reduces the loss of nitrogen.
Description of the drawings
Fig. 1 is the structural schematic diagram of the negative-pressure vacuum module in the embodiment of the present invention;
Fig. 2 is the structural schematic diagram of the positive pressure purging module in the embodiment of the present invention;
Fig. 3 is the structural schematic diagram of the process gas conveying cleaning systems in the embodiment of the present invention.
Reference numeral:The first pipelines of 1-;2- branch lines;The first non-return valves of 3-;4- first pressure gauges;The first diaphragms of 5- Valve;The second diaphragm valves of 6-;7- vacuum pumps;The second pipelines of 8-;9- third diaphragm valves;10- second pressure gauges;11- surge tanks;12- 4th diaphragm valve;The second non-return valves of 13-;14- temperature control heating devices;15- process gas conveying equipments;16- Nitrogen source gases;17- Garbage collection tank.
Specific implementation mode
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
For make present invention solves the technical problem that, the technical solution that uses and the technique effect that reaches it is clearer, below The technical solution of the embodiment of the present invention will be described in further detail in conjunction with attached drawing, it is clear that described embodiment is only It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art exist The every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
As shown in figure 3, present embodiments providing a kind of process gas conveying cleaning systems, including process gas conveying equipment 15 and blowing pipeline device, blowing pipeline device therein includes negative-pressure vacuum module and positive pressure purging module.Specifically, as schemed 1 to shown in Fig. 3, and negative-pressure vacuum module includes passing sequentially through the first non-return valve 3, the first pressure gauge 4 that the first pipeline 1 connects from beginning to end Further include the branch line 2 being connected between first pressure gauge 4 and the first diaphragm valve 5 with the first diaphragm valve 5, on branch line 2 It is provided with the second diaphragm valve 6, the free end of branch line 2 connects vacuum pump 7.Negative-pressure vacuum module is used for before using to technique The vacuum pumping of gas transportation facilities 15 vacuumizes completion until the pressure value in first pressure gauge 4 to -14.7psi, this Sample the gas in process gas conveying equipment 15 all can be discharged, the easy to operate and used time is very short, saves by vacuumizing Time cost.It includes passing sequentially through third diaphragm valve 9, the second pressure gauge that the second pipeline 8 connects from beginning to end that positive pressure, which purges module, 10, surge tank 11, the 4th diaphragm valve 12 and the second non-return valve 13.Surge tank 11 has energy storage effect, is opening third diaphragm valve 9 The nitrogen in Nitrogen source gases 16 is stored in surge tank 11 afterwards, when the pressure value in second pressure gauge 10 reaches 80psi, surge tank 11 Interior nitrogen has sufficiently large impact force, opens the 4th diaphragm valve 12 and the first diaphragm valve 5 at this time, can be easily by work Residual impurity in 15 pipeline of skill gas transportation facilities cleans away.Further, temperature control heating is additionally provided in surge tank 11 Device 14 can heat the nitrogen in surge tank 11, and hot nitrogen disposably can all remove impurity and moisture, It substantially reduces and cleans the time, reduce the loss of nitrogen.Further, the second pipeline 8 close to one end of third diaphragm valve 9 with Nitrogen source gases 16 connect, and the other end is connect with the air inlet of process gas conveying equipment 15, and the first pipeline 1 is close to the first non-return valve 3 one end is connect with the gas outlet of process gas conveying equipment 15, defeated to process gas to constitute purge system pipe path Equipment 15 is sent to be purged.In order to collect the discarded and impurity of discharge, avoid environmental pollution, the other end of the first pipeline 1 with it is useless Expect that collecting tank 17 connects.
Specifically, temperature control heating device 14 uses temp auto-controlled heat tape, which includes PTC conduction materials Material, plain conductor and insulating sheath, PTC conductive materials are in parallel with plain conductor, and insulating sheath is led in PTC conductive materials with metal Outside line." PTC " characteristic, that is, positive temperature coefficient effect refers to resistivity of material to be increased as temperature increases, and in a constant temperature The characteristic that degree compartment resistivity increased dramatically.The positive and negative anodes of temp auto-controlled heat tape are correspondingly connected with the positive and negative anodes of power supply respectively, Electric current flows into plain conductor and PTC conductive materials in temp auto-controlled heat tape from anode.PTC conductive materials are exactly continuous in parallel Resistance heater between plain conductor, converts electrical energy into thermal energy, and heating and thermal insulation is carried out to surge tank 11.Temp auto-controlled electricity adds The resistance in the torrid zone increases with temperature and gradually increases, and when having reached critical high resistance area, resistance levels off to infinity, and blocks electricity Stream, electric current only pass through plain conductor.The temperature of temp auto-controlled heat tape just reaches maximum temperature and no longer increases at this time, realizes certainly Dynamic limit temperature.When the resistance of PTC conductive materials is down to critical resistance area with its temperature, electric current is allowed to pass through, temp auto-controlled electricity adds at this time Restart heat temperature raising in the torrid zone.
Further, for the pressure size in pipeline is clearly viewed, second pressure gauge 10 and first pressure gauge 4 are all made of Pointer pressure.Third diaphragm valve 9, the 4th diaphragm valve 12, the first diaphragm valve 5 and the second diaphragm valve 6 are all made of manual diaphragm The structure of valve, manual diaphragm valve be with end valve, with can disinfection function novel valve, also known as (handwheel) driving is straight manually General formula shut-off valve.It is straight-through logical without dead angle including the stainless steel body of diaphragm, hot investment casting made of EPDM diaphragm materials, polishing Road, and there is open and close limit and status display function.Such valve is acidproof, it is alkaline-resisting, without leakage, not microbiological contamination, easily disinfection and It is easy to maintain.
Further, in order to make blowing pipeline device more securely be connected on process gas conveying equipment 15, and position Properly, it occupies little space, blowing pipeline device further includes first substrate and second substrate, and first substrate and second substrate, which are fixed, to be connected It is connected on the siding of process gas conveying equipment 15, negative-pressure vacuum module is detachably connected on first substrate, and positive pressure purges mould Group is detachably connected on second substrate, in this way in the case where blowing pipeline device damages, can also be disassembled and be tieed up It repaiies or replaces.
Further, third diaphragm valve 9, the 4th diaphragm valve 12 and the second non-return valve 13 are managed by VCR connectors and second Road 8 connects, and the first non-return valve 3 and the first diaphragm valve 5 are connect by VCR connectors with the first pipeline 1, and the second diaphragm valve 6 also leads to VCR connectors are crossed to connect with branch line 2.The full name in English of VCR is Vacuum Coupling Radius Seal, i.e. vacuum connects Sagittal plane seal nipple is connect, VCR connectors are one kind of face seal nipple, and sealing element uses metal gasket.Pass through internal and external screw thread It interlocks to oppress metal gasket, so that gasket is generated certain deformation, to achieve the effect that sealing.High (the group of VCR connectors cleanliness factor Part is by the process such as electropolishing and cleaning), good airproof performance because using metallic seal element, the specified work of VCR connectors It is relatively wider (using the VCR connectors of SUS316L gaskets, temperature rating is up to 537 DEG C) to make temperature range.VCR connectors are convenient for peace Dress has minimum dismounting gap, (can be reinstalled after dismounting with repeated disassembled and assembled and need replacing new gasket).Second pipeline 8, first Pipeline 1 and branch line 2 are stainless steel pipes.
The course of work of process gas conveying cleaning systems provided in this embodiment is as follows:
Third diaphragm valve 9 is first connected into 16 end of Nitrogen source gases, 13 Joining Technology gas transportation facilities 15 of the second non-return valve Air inlet, negative pressure vacuumize the gas outlet of module Joining Technology gas transportation facilities 15.Before carrying out cleaning works, at all valves In opening state, temp auto-controlled heat tape is opened.(a) third diaphragm valve 9 and the 4th diaphragm valve 12 are closed, the second diaphragm valve is opened 6, then start vacuum pump 7;(b) observe first pressure gauge 4 pressure value, when first pressure gauge 4 pressure value stabilization- When 14.7psi, the second diaphragm valve 6 is first closed, it is rear to open third diaphragm valve 9, so that high pure nitrogen is filled with surge tank 11, temp auto-controlled electricity Heating tape is in heated condition (30 DEG C of constant temperature).When the pressure value of second pressure gauge 10 reaches 80psi, third diaphragm is first closed Valve 9, rear to open the 4th diaphragm valve 12 and the first diaphragm valve 5, the big flow nitrogen with thermal energy pours process gas conveying equipment In 15 pipeline, moisture, oxygen and the impurity particle in pipeline are displaced.After continuously repeating (a) and (b) step 20-30 times, work Gas outlet connection moisture, oxygen and the grain analyser of skill gas transportation facilities 15, are tested.
The blowing pipeline apparatus structure of the present embodiment is simple, and the cleaning time is short, and effect is good, and nitrogen consumption greatly reduces, Production cost substantially reduces.
Note that above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that The present invention is not limited to specific embodiments described here, can carry out for a person skilled in the art it is various it is apparent variation, It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out to the present invention by above example It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also May include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.

Claims (10)

1. a kind of blowing pipeline device, which is characterized in that module is purged including negative-pressure vacuum module and positive pressure,
The negative-pressure vacuum module includes the first non-return valve (3) for passing sequentially through the first pipeline (1) head and the tail connection, first pressure gauge (4) and the first diaphragm valve (5) further include, the branch being connected between the first pressure gauge (4) and first diaphragm valve (5) Pipeline (2), the second diaphragm valve (6) is provided on the branch line (2), and the free end of the branch line (2) connects vacuum It pumps (7);
The positive pressure purging module includes the third diaphragm valve (9) for passing sequentially through the second pipeline (8) head and the tail connection, second pressure gauge (10), surge tank (11), the 4th diaphragm valve (12) and the second non-return valve (13).
2. blowing pipeline device according to claim 1, which is characterized in that be additionally provided with temperature control in the surge tank (11) Heating device (14).
3. blowing pipeline device according to claim 1, which is characterized in that the first pressure gauge (4) and described second Pressure gauge (10) is all made of pointer pressure.
4. blowing pipeline device according to claim 1, which is characterized in that first diaphragm valve (5), described second every Film valve (6), the third diaphragm valve (9) and the 4th diaphragm valve (12) are all made of manual diaphragm valve arrangement.
5. blowing pipeline device according to claim 1, which is characterized in that further include first substrate and second substrate, institute It states negative-pressure vacuum module to be arranged on the first substrate, the positive pressure purging module is arranged on the second substrate.
6. blowing pipeline device according to claim 1, which is characterized in that first non-return valve (3) and described first Diaphragm valve (5) is connect by VCR connectors with first pipeline (1), and second diaphragm valve (6) passes through VCR connectors and institute State branch line (2) connection.
7. blowing pipeline device according to claim 1, which is characterized in that the third diaphragm valve (9), the described 4th every Film valve (12) and second non-return valve (13) are connect by VCR connectors with second pipeline (8).
8. blowing pipeline device according to claim 1, which is characterized in that first pipeline (1), second pipeline (8) and the branch line (2) is stainless steel pipes.
9. a kind of process gas conveys cleaning systems, which is characterized in that including process gas conveying equipment (15) and as right is wanted 1-8 any one of them blowing pipeline devices are sought, the first pipeline (1) in the blowing pipeline device is close to the first non-return valve (3) one end is connect with the gas outlet of the process gas conveying equipment (15);The second pipeline in the blowing pipeline device (8) it is connect with Nitrogen source gases (16) close to one end of third diaphragm valve (9), the other end and the process gas conveying equipment (15) Air inlet connection.
10. process gas according to claim 9 conveys cleaning systems, which is characterized in that first pipeline (1) it is another One end is connect with garbage collection tank (17).
CN201810574914.7A 2018-06-06 2018-06-06 Blowing pipeline device and process gas convey cleaning systems Pending CN108405501A (en)

Priority Applications (1)

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CN201810574914.7A CN108405501A (en) 2018-06-06 2018-06-06 Blowing pipeline device and process gas convey cleaning systems

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Application Number Priority Date Filing Date Title
CN201810574914.7A CN108405501A (en) 2018-06-06 2018-06-06 Blowing pipeline device and process gas convey cleaning systems

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CN108405501A true CN108405501A (en) 2018-08-17

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Cited By (5)

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CN109737032A (en) * 2018-12-29 2019-05-10 通威太阳能(成都)有限公司 A kind of novel vacuum pump restarts anti-jamming method after stopping
CN109848165A (en) * 2019-01-16 2019-06-07 北京智博高科生物技术有限公司 A kind of clearing apparatus for sealed seed source protective housing
CN110187067A (en) * 2019-06-21 2019-08-30 至砾机电设备(上海)有限公司 A kind of water oxygen particle automatic analysis system and its analysis method
CN111135680A (en) * 2019-12-30 2020-05-12 中船重工(邯郸)派瑞特种气体有限公司 Water removal method and system suitable for high-purity electronic grade gas production system
CN112409122A (en) * 2020-11-29 2021-02-26 山东高端化工研究院有限公司 Four raw materials preprocessing device of carbon behind ether

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CN109737032A (en) * 2018-12-29 2019-05-10 通威太阳能(成都)有限公司 A kind of novel vacuum pump restarts anti-jamming method after stopping
CN109848165A (en) * 2019-01-16 2019-06-07 北京智博高科生物技术有限公司 A kind of clearing apparatus for sealed seed source protective housing
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CN112409122A (en) * 2020-11-29 2021-02-26 山东高端化工研究院有限公司 Four raw materials preprocessing device of carbon behind ether

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