CN104989621A - Intelligent vacuum exhaust table - Google Patents
Intelligent vacuum exhaust table Download PDFInfo
- Publication number
- CN104989621A CN104989621A CN201510415824.XA CN201510415824A CN104989621A CN 104989621 A CN104989621 A CN 104989621A CN 201510415824 A CN201510415824 A CN 201510415824A CN 104989621 A CN104989621 A CN 104989621A
- Authority
- CN
- China
- Prior art keywords
- vacuum
- plc
- pump
- vacuum pump
- intelligent
- 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
Links
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention discloses an intelligent vacuum exhaust table. The intelligent vacuum exhaust table comprises a PLC, a vacuum sensor, a vacuum pump and a vacuum pump frequency converter. A vacuum set value is set in the PLC. The vacuum sensor is installed in a vacuumizing pipeline of a system needing to be vacuumized, and the vacuum sensor is used for acquiring pressure signals in the system needing to be vacuumized, converting the pressure signals into current signals and outputting the current signals to the PLC. A vacuum pump variable frequency motor for driving the vacuum pump to work is arranged in the vacuum pump. Frequency feedback signals of the vacuum pump frequency converter are output to the PLC. The PLC processes the current signals transmitted by the vacuum sensor and then outputs control signals to the vacuum pump frequency converter, and the signals are remotely adjusted to control the rotating speed of the vacuum pump variable frequency motor. The PLC acquires signals transmitted by the vacuum sensor and displays and records the signals on a touch screen, the signals are analyzed and calculated and then control relevant valves and the frequency converter, and therefore the vacuum degree is kept in a set target value. Operation is simple, the needed vacuum degree can be accurately reached, and vacuum stability can be kept.
Description
Technical field
The present invention relates to a kind of intelligent vacuum exhaust station.
Background technique
At present, at chemical industry rectification test with in producing, usually need to change vacuum condition preferably optimal operation parameter, there are two kinds of methods at present, the first is on gas-liquid separator, install a valve additional, gets final product Open valve when needs Raise vacuum is spent, and puts a little nitrogen or argon gas is gone out, when degree of vacuum will be reduced, get final product throttle down; The second is high vacuum realizes vacuum parameters when changing to rough vacuum change with the rotation time of closing vaccum pump motor, there is following shortcoming in above two kinds of ways: vacuum measured value and setting value error large, vacuum stability is poor, add two kinds of gases, complex operation.
Summary of the invention
Technical problem to be solved by this invention is the defect overcoming prior art, and provide a kind of intelligent vacuum exhaust station, it is simple to operate, can not only reach required degree of vacuum exactly, and can keep the stability of vacuum.
In order to solve the problems of the technologies described above, technological scheme of the present invention is: a kind of intelligent vacuum exhaust station, and it comprises:
PLC, is provided with vacuum setting value in PLC;
Vacuum transducer, vacuum transducer is arranged on to be needed in the vacuum-pumping pipeline of pumped vacuum systems, and vacuum transducer needs the pressure signal in pumped vacuum systems and convert thereof into current signal to export PLC to for gathering;
Vacuum pump, is provided with the vacuum pump variable-frequency motor driving vacuum pump work in described vacuum pump;
Vacuum pump frequency variator, the frequency feedback signal of vacuum pump frequency variator outputs to PLC, control signal is exported to vacuum pump frequency variator, the rotating speed of remote adjustment SC sigmal control vacuum pump variable-frequency motor after the current signal process that vacuum transducer transmits by PLC;
Also comprise Roots pump, Roots pump frequency variator and bypass valve, the Roots pump variable-frequency motor driving Roots pump work is provided with in Roots pump, the vacuum orifice of Roots pump is connected with needing pumped vacuum systems, the frequency feedback signal of Roots pump frequency variator outputs to PLC, control signal is exported to Roots pump frequency variator, the rotating speed of remote adjustment SC sigmal control Roots pump variable-frequency motor after the current signal process that vacuum transducer transmits by PLC; When needing the vacuum absolute pressure of pumped vacuum systems to be greater than vacuum setting value, bypass valve is opening state, and Roots pump is closed condition, and being connected to by vacuum pump and bypass valve needs in pumped vacuum systems; When needing the vacuum absolute pressure of pumped vacuum systems to be less than vacuum setting value, bypass valve is closed condition, and Roots pump is starting state, and being connected to by vacuum pump and Roots pump is needed in pumped vacuum systems.
Further in order to be filled with air to Roots pump and vacuum pump, intelligent vacuum exhaust station also comprises gas charging valve, and one end of described gas charging valve communicates with outside atmosphere, and the other end is connected with the vacuum orifice of vacuum pump with the vacuum orifice of Roots pump respectively.
Further in order to realize the automatic control to gas charging valve, the control input end of described gas charging valve is connected so that PLC controls the keying of gas charging valve with the control output end of PLC.
Further, described setting threshold value is 1KPa.
Further in order to make the liquid in vacuum pump not flow in vacuum-pumping pipeline, the vacuum orifice place of described vacuum pump is also connected with differential gas charging valve.
Further in order to realize the automatic control to differential gas charging valve, the described control input end of differential gas charging valve is connected so that PLC controls the keying of differential gas charging valve with the control output end of PLC.
Further, describedly vacuumizing between import and vacuum-pumping pipeline of pumped vacuum systems is needed also to be connected to vacuum valve.
Further, the control input end of described vacuum valve is connected so that PLC controls the keying of vacuum valve with the control output end of PLC.
After have employed technique scheme, what the motor due to vacuum pump of the present invention and Roots pump adopted is variable-frequency motor, when needing the vacuum absolute pressure of pumped vacuum systems to be greater than vacuum setting value, the rotation of vacuum pump variable-frequency motor can be controlled by PLC, just can make to need the vacuum absolute pressure of pumped vacuum systems in range of set value, need the vacuum values of pumped vacuum systems can be automatically fed to PLC and make its actual value meet vacuum absolute pressure setting value; In addition, if when vacuum absolute pressure is lower than vacuum setting value, automatically bypass valve can be closed, start Roots pump, make degree of vacuum reach the value of actual demand, because variable-frequency motor is being introduced in vacuum pump, require automation to realize automatically control to become very easy at chemical industry operation.
Accompanying drawing explanation
Fig. 1 is the connection diagram of intelligent vacuum exhaust station of the present invention.
Embodiment
In order to make content of the present invention more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation.
As shown in Figure 1, a kind of intelligent vacuum exhaust station, it comprises:
PLC 1, is provided with vacuum setting value in PLC 1; It can signals collecting, and display record, exports control signal after calculation process.
Vacuum transducer 2, described vacuum transducer 2 is arranged in the vacuum-pumping pipeline needing pumped vacuum systems 3, and vacuum transducer 2 needs the pressure signal in pumped vacuum systems 3 and convert thereof into current signal to export PLC 1 to for gathering;
Vacuum pump 4, is provided with the vacuum pump variable-frequency motor driving vacuum pump 4 to work in vacuum pump 4;
Vacuum pump frequency variator 5, the frequency feedback signal of vacuum pump frequency variator 5 outputs to PLC 1, control signal is exported to vacuum pump frequency variator 5, the rotating speed of remote adjustment SC sigmal control vacuum pump variable-frequency motor after the current signal process that vacuum transducer 2 transmits by PLC 1;
Also comprise Roots pump 6, Roots pump frequency variator and bypass valve 7, the Roots pump variable-frequency motor driving Roots pump 6 to work is provided with in Roots pump 6, the vacuum orifice of Roots pump 6 is connected with needing pumped vacuum systems 3, the frequency feedback signal of described Roots pump frequency variator outputs to PLC 1, control signal is exported to Roots pump frequency variator, the rotating speed of remote adjustment SC sigmal control Roots pump variable-frequency motor after the current signal process that vacuum transducer 2 transmits by PLC 1; When needing the vacuum absolute pressure of pumped vacuum systems 3 to be greater than vacuum setting value, bypass valve 7 is opening state, and Roots pump 6 is closed condition, and being connected to by vacuum pump 4 and bypass valve 7 needs in pumped vacuum systems 3; When needing the vacuum absolute pressure of pumped vacuum systems 3 to be less than vacuum setting value, bypass valve 7 is closed condition, and Roots pump 6 is starting state, and being connected to by vacuum pump 4 and Roots pump 6 is needed in pumped vacuum systems 3.
Adding of Roots pump frequency variator can make degree of vacuum reach target setting value (desired value can set arbitrarily according to system requirements) sooner more stably.Valve, variable-frequency motor controls all by PLC 1 logic control, automatically regulate
As shown in Figure 1, intelligent vacuum exhaust station also comprises gas charging valve 8, and one end of gas charging valve 8 communicates with outside atmosphere, and the other end is connected with the vacuum orifice of vacuum pump 4 with the vacuum orifice of Roots pump 6 respectively.
As shown in Figure 1, the control input end of gas charging valve 8 is connected so that PLC 1 controls the keying of gas charging valve 8 with the control output end of PLC 1.When gas charging valve 8 is opened, whole system is in halted state.
Setting threshold value is 1KPa.
As shown in Figure 1, the vacuum orifice place of vacuum pump 4 is also connected with differential gas charging valve 9.Differential gas charging valve 9 and vacuum pump 4 are same control signal, and vacuum pump 4 is opened, differential gas charging valve 9 synchronous averaging, and vacuum pump 4 cuts out, differential gas charging valve 9 close synchronously.
As shown in Figure 1, the control input end of differential gas charging valve 9 is connected with the control output end of PLC 1 so that PLC 1 controls the keying of differential gas charging valve 9.
Vacuumizing between import and vacuum-pumping pipeline of pumped vacuum systems 3 is needed also to be connected to vacuum valve 10.
The control input end of vacuum valve 10 is connected so that PLC 1 controls the keying of vacuum valve 10 with the control output end of PLC 1.
It is 1.0 × 10 that this intelligent vacuum exhaust station is applicable to vacuum level requirements
-1~ 1.0 × 10
5the occasion of Pa uses.
The working principle of the present embodiment is as follows:
What the motor due to vacuum pump 4 of the present invention adopted is variable-frequency motor, when needing the vacuum absolute pressure of pumped vacuum systems 3 higher than vacuum setting value, the rotation of variable-frequency motor can be controlled by PLC 1, just can make to need the vacuum absolute pressure of pumped vacuum systems 3 in range of set value, need the vacuum values of pumped vacuum systems 3 can be automatically fed to PLC 1 and make its actual value meet vacuum absolute pressure setting value; If when vacuum absolute pressure is lower than vacuum setting value, automatically can close bypass valve 7, start Roots pump 6, make degree of vacuum reach the value of actual demand, because variable-frequency motor is being introduced in vacuum pump 4, require automation to realize automatically control to become very easy at chemical industry operation.
Certain the present invention can adopt separately vacuum pump 4, does not need Roots pump 6, and it is 1.0 × 10 that this intelligent vacuum pump is applicable to vacuum level requirements
2~ 1.0 × 10
5the occasion of Pa uses.
Above-described specific embodiment; technical problem, technological scheme and beneficial effect that the present invention solves are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. an intelligent vacuum exhaust station, is characterized in that, it comprises:
PLC (1), described PLC is provided with vacuum setting value in (1);
Vacuum transducer (2), described vacuum transducer (2) is arranged in the vacuum-pumping pipeline needing pumped vacuum systems (3), and vacuum transducer (2) needs the pressure signal in pumped vacuum systems (3) and convert thereof into current signal to export PLC (1) to for gathering;
Vacuum pump (4), is provided with the vacuum pump variable-frequency motor driving vacuum pump (4) to work in described vacuum pump (4);
Vacuum pump frequency variator (5), the frequency feedback signal of described vacuum pump frequency variator (5) outputs to PLC (1), control signal is exported to vacuum pump frequency variator (5), the rotating speed of remote adjustment SC sigmal control vacuum pump variable-frequency motor after the current signal process that vacuum transducer (2) transmits by PLC (1);
Also comprise Roots pump (6), Roots pump frequency variator and bypass valve (7), the Roots pump variable-frequency motor driving Roots pump (6) to work is provided with in described Roots pump (6), the vacuum orifice of described Roots pump (6) is connected with needing pumped vacuum systems (3), the frequency feedback signal of described Roots pump frequency variator outputs to PLC (1), control signal is exported to Roots pump frequency variator, the rotating speed of remote adjustment SC sigmal control Roots pump variable-frequency motor after the current signal process that vacuum transducer (2) transmits by PLC (1); When needing the vacuum absolute pressure of pumped vacuum systems (3) to be greater than vacuum setting value, bypass valve (7) is opening state, Roots pump (6) is closed condition, and being connected to by vacuum pump (4) and bypass valve (7) needs in pumped vacuum systems (3); When needing the vacuum absolute pressure of pumped vacuum systems (3) to be less than vacuum setting value, bypass valve (7) is closed condition, Roots pump (6) is starting state, and being connected to by vacuum pump (4) and Roots pump (6) is needed in pumped vacuum systems (3).
2. intelligent vacuum exhaust station according to claim 1, it is characterized in that: also comprise gas charging valve (8), one end of described gas charging valve (8) communicates with outside atmosphere, and the other end is connected with the vacuum orifice of vacuum pump (4) with the vacuum orifice of Roots pump (6) respectively.
3. intelligent vacuum exhaust station according to claim 2, is characterized in that: the control input end of described gas charging valve (8) is connected so that PLC (1) controls the keying of gas charging valve (8) with the control output end of PLC (1).
4. the intelligent vacuum exhaust station according to claim 1 or 2 or 3, is characterized in that: described setting value vacuum setting value is 1KPa.
5. intelligent vacuum exhaust station according to claim 1, is characterized in that: the vacuum orifice place of described vacuum pump (4) is also connected with differential gas charging valve (9).
6. intelligent vacuum exhaust station according to claim 5, is characterized in that: the control input end of described differential gas charging valve (9) is connected so that PLC (1) controls the keying of differential gas charging valve (9) with the control output end of PLC (1).
7. intelligent vacuum exhaust station according to claim 1, is characterized in that: describedly need vacuumizing between import and vacuum-pumping pipeline of pumped vacuum systems (3) to be also connected to vacuum valve (10).
8. intelligent vacuum exhaust station according to claim 7, is characterized in that: the control input end of described vacuum valve (10) is connected so that PLC (1) controls the keying of vacuum valve (10) with the control output end of PLC (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510415824.XA CN104989621A (en) | 2015-07-15 | 2015-07-15 | Intelligent vacuum exhaust table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510415824.XA CN104989621A (en) | 2015-07-15 | 2015-07-15 | Intelligent vacuum exhaust table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104989621A true CN104989621A (en) | 2015-10-21 |
Family
ID=54301485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510415824.XA Pending CN104989621A (en) | 2015-07-15 | 2015-07-15 | Intelligent vacuum exhaust table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104989621A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106827011A (en) * | 2016-12-22 | 2017-06-13 | 拓卡奔马机电科技有限公司 | Negative pressure of vacuum regulation electric-control system and the negative pressure of vacuum adjusting method of cutting |
| CN107367977A (en) * | 2016-05-11 | 2017-11-21 | 广东特信超导技术有限公司 | Multichannel superelectron intelligent monitor system |
| CN108331735A (en) * | 2018-03-06 | 2018-07-27 | 南京帝鼎数控科技有限公司 | A kind of energy saving intelligent vacuum station |
| CN108691769A (en) * | 2017-04-12 | 2018-10-23 | 株式会社荏原制作所 | Vacuum pump apparatus and method for controlling of operation for vacuum pump apparatus |
| CN109944785A (en) * | 2019-04-17 | 2019-06-28 | 中山市腾能智能科技有限公司 | A kind of vacuum method for controlling pump and system |
| CN112709683A (en) * | 2020-12-07 | 2021-04-27 | 珠海格力智能装备有限公司 | Full-automatic evacuating device |
| CN114412752A (en) * | 2022-03-28 | 2022-04-29 | 常州铭赛机器人科技股份有限公司 | Segmented vacuum working apparatus and method of using the same |
| CN114810641A (en) * | 2021-01-29 | 2022-07-29 | 深圳市大族数控科技股份有限公司 | Adsorption control system and control method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020034447A1 (en) * | 2000-04-11 | 2002-03-21 | Brazil Lionel H. | Open loop control apparatus for vacuum controlled systems |
| CN201934299U (en) * | 2010-11-23 | 2011-08-17 | 安徽嘉硕真空科技有限公司 | Energy-saving control system of mechanical vacuum pump |
| CN202157964U (en) * | 2011-07-14 | 2012-03-07 | 温州市欧弗斯机械有限公司 | Intelligent regulation vacuum system |
| CN102514177A (en) * | 2011-12-22 | 2012-06-27 | 铜陵市唯希塑料挤出设备科技有限公司 | Energy-saving control system of auxiliary engine shaping bench |
| CN202370808U (en) * | 2011-12-21 | 2012-08-08 | 厦门市格绿科技有限公司 | Vacuum automation control system |
| CN202560609U (en) * | 2012-05-17 | 2012-11-28 | 山东瑞阳硅业科技有限公司 | Negative pressure control device of white carbon black system |
| CN103173593A (en) * | 2013-04-11 | 2013-06-26 | 什邡市三裕锻件有限公司 | Molten steel vacuum refining system based on mechanical pump group |
| CN204851579U (en) * | 2015-07-15 | 2015-12-09 | 陆铭 | Intelligence vacuum -exhaust platform |
-
2015
- 2015-07-15 CN CN201510415824.XA patent/CN104989621A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020034447A1 (en) * | 2000-04-11 | 2002-03-21 | Brazil Lionel H. | Open loop control apparatus for vacuum controlled systems |
| CN201934299U (en) * | 2010-11-23 | 2011-08-17 | 安徽嘉硕真空科技有限公司 | Energy-saving control system of mechanical vacuum pump |
| CN202157964U (en) * | 2011-07-14 | 2012-03-07 | 温州市欧弗斯机械有限公司 | Intelligent regulation vacuum system |
| CN202370808U (en) * | 2011-12-21 | 2012-08-08 | 厦门市格绿科技有限公司 | Vacuum automation control system |
| CN102514177A (en) * | 2011-12-22 | 2012-06-27 | 铜陵市唯希塑料挤出设备科技有限公司 | Energy-saving control system of auxiliary engine shaping bench |
| CN202560609U (en) * | 2012-05-17 | 2012-11-28 | 山东瑞阳硅业科技有限公司 | Negative pressure control device of white carbon black system |
| CN103173593A (en) * | 2013-04-11 | 2013-06-26 | 什邡市三裕锻件有限公司 | Molten steel vacuum refining system based on mechanical pump group |
| CN204851579U (en) * | 2015-07-15 | 2015-12-09 | 陆铭 | Intelligence vacuum -exhaust platform |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367977A (en) * | 2016-05-11 | 2017-11-21 | 广东特信超导技术有限公司 | Multichannel superelectron intelligent monitor system |
| CN106827011A (en) * | 2016-12-22 | 2017-06-13 | 拓卡奔马机电科技有限公司 | Negative pressure of vacuum regulation electric-control system and the negative pressure of vacuum adjusting method of cutting |
| CN108691769A (en) * | 2017-04-12 | 2018-10-23 | 株式会社荏原制作所 | Vacuum pump apparatus and method for controlling of operation for vacuum pump apparatus |
| CN108331735A (en) * | 2018-03-06 | 2018-07-27 | 南京帝鼎数控科技有限公司 | A kind of energy saving intelligent vacuum station |
| CN108331735B (en) * | 2018-03-06 | 2024-02-09 | 南京帝鼎数控科技有限公司 | Energy-saving intelligent vacuum station |
| CN109944785A (en) * | 2019-04-17 | 2019-06-28 | 中山市腾能智能科技有限公司 | A kind of vacuum method for controlling pump and system |
| CN112709683A (en) * | 2020-12-07 | 2021-04-27 | 珠海格力智能装备有限公司 | Full-automatic evacuating device |
| CN114810641A (en) * | 2021-01-29 | 2022-07-29 | 深圳市大族数控科技股份有限公司 | Adsorption control system and control method |
| CN114412752A (en) * | 2022-03-28 | 2022-04-29 | 常州铭赛机器人科技股份有限公司 | Segmented vacuum working apparatus and method of using the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104989621A (en) | Intelligent vacuum exhaust table | |
| CN201925151U (en) | Vacuum pump performance testing device | |
| CN106681385B (en) | A kind of PLC vacuum tank low pressure automatic adjusting control device | |
| CN204851579U (en) | Intelligence vacuum -exhaust platform | |
| CN104568308A (en) | Detection device, method and system of pressure sensor | |
| CN203519254U (en) | Detection apparatus and system for pressure sensor | |
| CN104635776A (en) | Wide-range pressure control system and method applied to vacuum equipment | |
| CN101751056A (en) | Vacuum system constant voltage constant current regulator and control method thereof | |
| CN204152759U (en) | A kind of air compressor air filter mounting structure | |
| CN103727036A (en) | Precise adjustment system for vacuum degree of giant vacuum chamber | |
| CN114460985B (en) | Storage tank pressurization control system and control method based on single chip microcomputer | |
| CN205158158U (en) | Nitrogen seals automatic control device | |
| CN201697766U (en) | Turncock gas valve airtightness and flow detector system | |
| CN202092275U (en) | Multi-station automatic frequency conversion energy-saving ventilation and dust removal system | |
| CN104317322A (en) | Automatic pressure regulating type high-pressure helium control system | |
| CN216160089U (en) | Granary gas tightness detects control system | |
| CN204200729U (en) | A kind of control gear for offshore spilled oil spill containment boom automatic distributing and discharging | |
| CN204025093U (en) | A kind of submersible electric pump fuzzy control device | |
| CN202884479U (en) | Crude oil split-flow frequency conversion output control system | |
| CN202884205U (en) | Pneumatic control system for stepless regulation of opening of water-sealed valve | |
| CN203784636U (en) | One-button type nitrogen replacement device | |
| CN203786538U (en) | Workpiece pneumatic measuring control device | |
| CN207991809U (en) | It is low to let out high envelope valve action test set | |
| CN217868719U (en) | Instrument control box of pressure monotonous system of coke oven carbonization chamber | |
| CN108680313A (en) | It is low to let out high envelope valve test method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151021 |