CN105485040A - Vacuum detection device and detection method - Google Patents
Vacuum detection device and detection method Download PDFInfo
- Publication number
- CN105485040A CN105485040A CN201510978589.7A CN201510978589A CN105485040A CN 105485040 A CN105485040 A CN 105485040A CN 201510978589 A CN201510978589 A CN 201510978589A CN 105485040 A CN105485040 A CN 105485040A
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- China
- Prior art keywords
- vacuum
- solenoid valve
- sensing chamber
- cylindrical shell
- safety check
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
Abstract
The invention discloses a vacuum detection device. The vacuum detection device is suitable for the negative-pressure water suction occasion and structurally comprises a liquid inlet, an extraction opening, a barrel, a detection chamber, an extraction pipeline, a check valve, an electromagnetic valve, a manual valve, a detection electrode and a wiring box. The invention further discloses a detection method of the device. The device is mounted in a vacuum extraction system, the state formed by vacuum can be automatically detected, signals can be instantly given out, and therefore a power device can be shut down. Vacuum can be effectively formed, and liquid-state media can be prevented from entering a subsequent pipeline and the power device. According to the device, separation and recycling of residual liquid can be effectively avoided, the system can run more simply and conveniently, and safety, economy and cleanness are achieved.
Description
Technical field
The present invention relates to a kind of vacuum checking device and detecting method, belong to vacuum automation detection and control field, be specially adapted to centrifugal pump and vacuumize diversion and siphon filter vacuum water diversion.
Background technique
The conveying pump of waterworks, often adopts centrifugal pump, needs to fill water in the pump housing before this type of pump operation.Therefore, usually need before the conveying pump after stopping starts again to vacuumize, discharge the air in the pump housing and pipeline.Siphon filter running each cycle also needs vacuum siphon system to vacuumize syphon tube.
In above two kinds of occasions vacuumized, all need to use vacuum pump extracting air.After opening vacuum pump, air is discharged, and water flows, until enter the pipeline vacuumized along direction of bleeding under atmospheric pressure.In the application of centrifugal pump extracting vacuum, after water is full of the pump housing completely, can pumping process be stopped, starting centrifugal pump immediately; In the application of siphon filter extracting vacuum, water is introduced into syphon tube top can stop pumping process, completes Precipitation Process immediately by law of connected vessels.
In above two kinds of occasions vacuumized, if stop pumping process too early, then equipment cisco unity malfunction; Crossed stopping pumping process, then water enters vacuum suction pipeline, even arrives vacuum pump, both uneconomical, causes difficulty to again follow-up gas-liquid separation, therefore, significant for these two kinds of applications at appropriate position probing vacuum state.
Summary of the invention
In order to achieve the above object, the invention provides a kind of vacuum checking device and detecting method, can vacuum be detected and output signal, vacuum suction pipeline can be automatically shut down after vacuum is formed again.
The solution of the present invention is as follows: a kind of vacuum checking device, comprises cylindrical shell, and described cylindrical shell two ends arrange liquid entering hole and bleeding point respectively;
Solenoid valve and safety check are set in described cylindrical shell; Described safety check is used for preventing pumping process from terminating rear exhaust pipe and liquid working pipeline connection, keeps vacuum state; Cut off vacuum suction pipeline when being formed for vacuum, prevent working medium from entering vacuum line;
Described bleeding point is communicated with solenoid valve one end, and the described solenoid valve the other end is communicated with safety check one end; The described safety check the other end is communicated with liquid entering hole and forms airtight sensing chamber between the two, is the place detecting vacuum;
Arrange one group of testing electrode in described sensing chamber to be connected with the terminal box of cylindrical shell outside, for detecting vacuum state.
Further, arrange manually operated valve outside described cylindrical shell, described manually operated valve one end is communicated with sensing chamber, and the other end is communicated with the connecting pipeline of solenoid valve with bleeding point; Switch on or off vacuum suction pipeline when solenoid valve damages by manually operated valve, reach the object of Emergency use.
Further, a pair described testing electrode arranges length difference, and when sensing chamber's internal-filling liquid reaches 2/3, testing electrode is connected, and exports electrical signal.
A detecting method for vacuum checking device, step is as follows:
When needs extracting vacuum, opens solenoid valve, vacuum checking device is a-road-through, and air enters exhaust pipe via liquid entering hole, sensing chamber, safety check, solenoid valve, bleeding point, is extracted out by vacuum pump;
When the complete vacuum of air extraction is formed, working medium enters sensing chamber via liquid entering hole, the testing electrode conducting in sensing chamber, drives closed electromagnetic valve, cuts off vacuum suction pipeline, and outputs signal, for stopping vacuum pump and opening centrifugal pump;
When solenoid valve damages, replace electromagnetic valve work by manually operated valve.
Apparatus of the present invention are installed in the system of extracting vacuum, automatically can detect the state that vacuum is formed, and instantaneously provide signal, for stopping power equipment.Effectively can form vacuum, liquid medium can be avoided again to enter follow-up pipeline and power equipment.This device effectively can avoid separation and the recovery of raffinate, makes that system cloud gray model is easier, safety, economy, clean.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
Vacuum checking device of the present invention, structure comprises liquid entering hole 1, bleeding point 2, cylindrical shell 3, sensing chamber 4, exhaust pipe 5, safety check 6, solenoid valve 7, manually operated valve 8, testing electrode 9, terminal box 10.Liquid entering hole 1 one end is communicated in the sensing chamber 4 in device cylindrical shell, and the other end is vacuum suction pipeline top, and the place that being connected to needs to detect vacuum adopts standard thread import.Bleeding point 2 one end is communicated in the solenoid valve 3 in device cylindrical shell, and the other end is connected to vacuum pump by vacuum suction pipeline, adopts standard thread import.
Cylindrical shell is the shell of device critical piece.Size is approximately diameter 150mm, the tubular of high 200mm.In cylindrical shell, sensing chamber is set, exhaust pipe, safety check, solenoid valve, testing electrode.Sensing chamber 4 is a cavity, and be the place detecting vacuum, testing electrode 9 is settled in the inside, and when sensing chamber's internal-filling liquid reaches 2/3, testing electrode is connected, and exports electrical signal.
Safety check 6 is positioned at the rear end of sensing chamber on exhaust pipe.For preventing pumping process from terminating rear exhaust pipe and liquid working pipeline connection, keep vacuum state.Solenoid valve 7 is positioned at the rear end of safety check on exhaust pipe.Cut off vacuum suction pipeline when being formed for vacuum, prevent working medium (water) from entering vacuum line.Manually operated valve 8 is the bypass of safety check and solenoid valve on exhaust pipe.Switch on or off vacuum suction pipeline when solenoid valve damages by manually operated valve, reach the object of Emergency use.
The method of work of apparatus of the present invention is as follows: when needs extracting vacuum, opens solenoid valve, and vacuum checking device is a-road-through, and air enters exhaust pipe via 1 liquid entering hole, 4 sensing chamber, 6 safety check, 7 solenoid valves, 2 bleeding points, is extracted out by vacuum pump.When the complete vacuum of air extraction is formed, working medium (water) enters 4 sensing chamber via 1 liquid entering hole, the testing electrode conducting in sensing chamber, drives closed electromagnetic valve, cuts off vacuum suction pipeline, and outputs signal, for stopping vacuum pump and opening centrifugal pump.When 7 solenoid valves damage, replace electromagnetic valve work by 8 manually operated valves.
Although give detailed description and explanation to the specific embodiment of the present invention above; but what should indicate is; we can carry out various equivalence according to conception of the present invention to above-mentioned mode of execution and change and amendment; its function produced do not exceed that specification contains yet spiritual time, all should within protection scope of the present invention.
Claims (4)
1. a vacuum checking device, comprises cylindrical shell, it is characterized in that described cylindrical shell two ends arrange liquid entering hole and bleeding point respectively;
Solenoid valve and safety check are set in described cylindrical shell; Described safety check is used for preventing pumping process from terminating rear exhaust pipe and liquid working pipeline connection, keeps vacuum state; Cut off vacuum suction pipeline when being formed for vacuum, prevent working medium from entering vacuum line;
Described bleeding point is communicated with solenoid valve one end, and the described solenoid valve the other end is communicated with safety check one end; The described safety check the other end is communicated with liquid entering hole and forms airtight sensing chamber between the two, is the place detecting vacuum;
Arrange one group of testing electrode in described sensing chamber to be connected with the terminal box of cylindrical shell outside, for detecting vacuum state.
2. a kind of vacuum checking device according to claim 1, is characterized in that, arranges manually operated valve outside described cylindrical shell, and described manually operated valve one end is communicated with sensing chamber, and the other end is communicated with the connecting pipeline of solenoid valve with bleeding point; Switch on or off vacuum suction pipeline when solenoid valve damages by manually operated valve, reach the object of Emergency use.
3. a kind of vacuum checking device according to claim 1 and 2, is characterized in that, a pair described testing electrode arranges length difference, and when sensing chamber's internal-filling liquid reaches 2/3, testing electrode is connected, and exports electrical signal.
4. the detecting method of a kind of vacuum checking device according to claim 3, it is characterized in that, step is as follows:
When needs extracting vacuum, opens solenoid valve, vacuum checking device is a-road-through, and air enters exhaust pipe via liquid entering hole, sensing chamber, safety check, solenoid valve, bleeding point, is extracted out by vacuum pump;
When the complete vacuum of air extraction is formed, working medium enters sensing chamber via liquid entering hole, the testing electrode conducting in sensing chamber, drives closed electromagnetic valve, cuts off vacuum suction pipeline, and outputs signal, for stopping vacuum pump and opening centrifugal pump;
When solenoid valve damages, replace electromagnetic valve work by manually operated valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510978589.7A CN105485040B (en) | 2015-12-24 | 2015-12-24 | A kind of vacuum checking device and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510978589.7A CN105485040B (en) | 2015-12-24 | 2015-12-24 | A kind of vacuum checking device and detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105485040A true CN105485040A (en) | 2016-04-13 |
| CN105485040B CN105485040B (en) | 2018-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510978589.7A Active CN105485040B (en) | 2015-12-24 | 2015-12-24 | A kind of vacuum checking device and detection method |
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| CN (1) | CN105485040B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644143A (en) * | 2018-03-27 | 2018-10-12 | 兰州空间技术物理研究所 | A kind of minipump pumping speed measuring device and method |
| CN108797619A (en) * | 2018-09-04 | 2018-11-13 | 中国建筑第二工程局有限公司 | Partial vacuum pressure drop drainage pipeline networks and its construction method |
Citations (7)
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| US5536147A (en) * | 1994-08-26 | 1996-07-16 | Paco Pumps, Inc. | Vacuum priming system for centrifugal pumps |
| JP2002147365A (en) * | 2000-11-08 | 2002-05-22 | Osaka Vacuum Ltd | Exhaust pressure control device of evacuation system |
| CN201363282Y (en) * | 2009-02-19 | 2009-12-16 | 上海梅山钢铁股份有限公司 | Evacuating device of centrifugal water pump |
| CN101903662A (en) * | 2007-12-20 | 2010-12-01 | 费斯托股份有限两合公司 | Vacuum generator device and method for operating the same |
| CN204371741U (en) * | 2014-11-27 | 2015-06-03 | 江苏唯达水处理技术有限公司 | A kind of vacuum water diversion control gear |
| CN104912813A (en) * | 2015-05-08 | 2015-09-16 | 湖南山源安自控系统有限公司 | Water and gas separation detection protection device for precisely judging water diversion state of mine draining pump |
| CN205297995U (en) * | 2015-12-24 | 2016-06-08 | 合肥敬业电子有限公司 | Vacuum test device |
-
2015
- 2015-12-24 CN CN201510978589.7A patent/CN105485040B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5536147A (en) * | 1994-08-26 | 1996-07-16 | Paco Pumps, Inc. | Vacuum priming system for centrifugal pumps |
| JP2002147365A (en) * | 2000-11-08 | 2002-05-22 | Osaka Vacuum Ltd | Exhaust pressure control device of evacuation system |
| CN101903662A (en) * | 2007-12-20 | 2010-12-01 | 费斯托股份有限两合公司 | Vacuum generator device and method for operating the same |
| CN201363282Y (en) * | 2009-02-19 | 2009-12-16 | 上海梅山钢铁股份有限公司 | Evacuating device of centrifugal water pump |
| CN204371741U (en) * | 2014-11-27 | 2015-06-03 | 江苏唯达水处理技术有限公司 | A kind of vacuum water diversion control gear |
| CN104912813A (en) * | 2015-05-08 | 2015-09-16 | 湖南山源安自控系统有限公司 | Water and gas separation detection protection device for precisely judging water diversion state of mine draining pump |
| CN205297995U (en) * | 2015-12-24 | 2016-06-08 | 合肥敬业电子有限公司 | Vacuum test device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644143A (en) * | 2018-03-27 | 2018-10-12 | 兰州空间技术物理研究所 | A kind of minipump pumping speed measuring device and method |
| CN108797619A (en) * | 2018-09-04 | 2018-11-13 | 中国建筑第二工程局有限公司 | Partial vacuum pressure drop drainage pipeline networks and its construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105485040B (en) | 2018-04-27 |
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Denomination of invention: Vacuum detection device and detection method Effective date of registration: 20190426 Granted publication date: 20180427 Pledgee: Anhui Feixi rural commercial bank Limited by Share Ltd small temple sub branch Pledgor: HEFEI DEDICATED ELECTRONICS CO., LTD. Registration number: 2019340000219 |
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Date of cancellation: 20200617 Granted publication date: 20180427 Pledgee: Anhui Feixi rural commercial bank Limited by Share Ltd. small temple sub branch Pledgor: HEFEI DEDICATED ELECTRONICS Co.,Ltd. Registration number: 2019340000219 |
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Denomination of invention: Vacuum detection device and detection method Effective date of registration: 20200622 Granted publication date: 20180427 Pledgee: Anhui Feixi rural commercial bank Limited by Share Ltd. small temple sub branch Pledgor: HEFEI DEDICATED ELECTRONICS Co.,Ltd. Registration number: Y2020980003356 |