CN1028454C - Numerically controlled high-flow regulating valve - Google Patents
Numerically controlled high-flow regulating valve Download PDFInfo
- Publication number
- CN1028454C CN1028454C CN 89102085 CN89102085A CN1028454C CN 1028454 C CN1028454 C CN 1028454C CN 89102085 CN89102085 CN 89102085 CN 89102085 A CN89102085 A CN 89102085A CN 1028454 C CN1028454 C CN 1028454C
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- gas
- flow
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- controlled
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Abstract
The present invention relates to a high-flow digital control flow regulating valve which belongs to an electromechanical integration product and is mainly applied to a chemical industry production occasion, an oil exploitation occasion requiring of controlling the flow. The high-flow digital control flow regulating valve regulates the gas pressure in a gas chamber by using the method that a gas inlet and a gas outlet of the gas chamber of a pressure control flow valve are respectively connected with an electric control gas cut-off valve by using a control functional block to control the two electric control gas cut-off valves via controlling the gas inflow/output in the gas chamber, and thereby, the goal of controlling the output flow is reached. The method omits a high-cost proportional electric magnet required by the method in the past and simultaneously is suitable for using digital control.
Description
This numerically controlled high-flow regulating valve is a kind of numerically controlled high-flow regulating valve door, belongs to electromechanical integrated product.It is mainly used in the occasion that Chemical Manufacture, oil exploitation etc. need be controlled its flow.
Mostly the present invention's flow control valve that is applicable to big flow in the past is to adopt a voltage-controlled flow valve to do main valve, does control actuating component with a proportion electro-magnet.Because the input current of proportion electro-magnet is directly proportional with the power of its iron core output, controls the pressure of voltage-controlled flow valve air chamber by the chock pressure difference that the iron core tip forms, thereby reaches the purpose of its delivery rate of control.The volume of proportion electro-magnet is bigger, and cost is very high.Simultaneously, proportion electro-magnet is desired to be the analog quantity input, and this gives the trouble that the employing of electromechanical integration technology such as computerizeing control has brought increases a middle digital-to-analog conversion, is difficult for directly being controlled by central control unit.Along with science and technology development, more and more higher with the requirement that computing machine is controlled production system, therefore manufacture and design and just can have important practical significance by directly actuated executive component by the computing machine output quantity.
Because the iron core control pressure reduction with proportion electro-magnet is the method for using throttling, when work, always constantly has gas to discharge, and wastes energy on the one hand, also produces noise on the other hand.
The objective of the invention is to invent and a kind ofly directly control numerically controlled high-flow regulating valve simple in structure, with low cost with digital quantity.
Structure principle chart of the present invention as shown in Figure 1, it has voltage-controlled flow valve (1), control source of the gas (2), control source of the gas (2) is to be positioned over pumping plant or air reservoir nearby, it is characterized in that: respectively have a pilot-gas to enter and discharge logical valve (3) and (4) of ending of automatically controlled gas of air chamber in the pilot-gas of voltage-controlled flow valve (1) air chamber inlet and exit, and logical valve (3) and (4) of ending of automatically controlled gas are led to the control function piece (5) that time only controls.
Accompanying drawing 1 is a structural principle synoptic diagram of the present invention.
Accompanying drawing 2 carries out an example structure principle schematic of FEEDBACK CONTROL for pressure boost sensor of the present invention.
The present invention also be with voltage-controlled flow valve (1) as main valve, but got rid of proportion electro-magnet, adopt that a pair of automatically controlled gas is logical to end valve (3) and (4) are controlled the air chamber pressure of voltage-controlled flow valve (1).Because under the condition of a constant volume, and when temperature variation is little, pressure with a kind of gas is directly proportional with gas flow, and the gas chamber volume of voltage-controlled flow valve (1) and pipeline volume are predictable, therefore can control logical turn-on time of ending valve (3) and (4) by automatically controlled gas and enter or the amount of emission gases, thereby reach the purpose of controlling voltage-controlled flow valve.Be input to the digital quantity of control function piece (5), control function piece (5) can determine that air inlet still is the service time of exhaust and by-pass valve control according to the requirement of input and the situation of current voltage-controlled flow valve (1).To after control function piece (5) initialization (as being in when closing the death situation attitude in voltage-controlled flow valve (1), make the zero setting of the inner present flow rate register of control function piece (5)), value and required flow value in the available present flow rate register of control function piece (5) compare, as if ducted flow, pressure, or the parameters relevant with controlled fluid flow such as the temperature in the chemical reaction pot, pressure, reach the purpose that system's negative feedback controls.Because gaseous tension is responsive to temperature in the air chamber, can add a temperature sensor in system, and temperature signal is input in the control function piece (5), is used for output signal is proofreaied and correct.Owing to be to control air chamber pressure with air inlet or exhaust, only when flow changes, gas flow is arranged, can conserve energy reduce noise.
The present invention also can be connected to a pressure transducer (6) on voltage-controlled flow valve (1) air chamber, as shown in Figure 2.Pressure transducer (6) is delivered to the air chamber pressure signal in the control function piece (5), and control function piece (5) is only controlled logical the ending of automatically controlled gas according to the force value of requirement flow correspondence and the difference of actual pressure value leading to of valve (3) and (4).When actual pressure value was lower than required value, control function piece (5) allowed the logical valve (3) that ends of automatically controlled gas that is connected to air intake opening open, and voltage-controlled flow valve (1) air chamber pressure is improved.Otherwise when if actual pressure is higher than required value, control function piece (5) allows the logical valve (4) that ends of automatically controlled gas that is connected to exhausr port open, and voltage-controlled flow valve (1) air chamber pressure is reduced.
The present invention's employing respectively connects the logical method of ending valve of an automatically controlled gas at voltage-controlled flow valve air chamber porting, with a control function piece the logical valve that ends of two automatically controlled gases is controlled, and controls the pressure of the gas in the air chamber, thereby reaches the purpose of its flow of control.Because the logical valve that ends of automatically controlled gas only requires that carrying out switch controls, and has saved the more expensive proportion electro-magnet of price, can reduce cost significantly.Simultaneously, the desired input quantity of control function piece is a digital quantity, thereby reaches the purpose of numerical control, has simplified the control system structure, is convenient to the enforcement of electromechanical integration.
Control function piece (5) among the present invention can be made up of several simple logical circuits and auxiliary circuit, also can be made up of single-chip microcomputer and auxiliary circuit, can also add auxiliary circuit with single card microcomputer and form.Auxiliary circuit can be circuit such as power supply, output promote, input isolation, control function piece (5) also can be a simple controlled timing circuit, the control signal that reception comes from main system is finished logical only valve (3) of automatically controlled gas and the control of (4) open-interval.The present invention can also control the logical valve that ends of the automatically controlled gas that is equipped with on several voltage-controlled flow valves simultaneously with a control function piece, gives full play to the function of control function piece, realizes team control.
Automatically controlled gas of the present invention is logical, and only valve can be less, simplifies on the one hand to drive the logical only circuit of valve of automatically controlled gas, also can improve control accuracy on the other hand.The present invention can just put into air chamber to the logical valve that ends of automatically controlled gas when manufacturing voltage-controlled flow valve.
Control source of the gas (2) among the present invention can be the pumping plant source of the gas, but requires pressure surge little.To under the occasion that is not often adjusting flow, using, also can be to do source of the gas with air reservoir.Can also be with both combinations, pumping plant is regularly inflated air reservoir.Reply gas filters removal of contamination in control source of the gas (2).
Claims (3)
1, a kind of numerically controlled high-flow regulating valve, it has voltage-controlled flow valve (1), control source of the gas (2), control source of the gas (2) is to be positioned over pumping plant or air reservoir nearby, it is characterized in that: respectively have a pilot-gas to enter and discharge logical valve (3) and (4) of ending of automatically controlled gas of air chamber in the pilot-gas of voltage-controlled flow valve (1) air chamber inlet and exit, and logical valve (3) and (4) of ending of automatically controlled gas are led to the control function piece (5) that time only controls.
2, a kind of numerically controlled high-flow regulating valve as claimed in claim 1 is characterized in that: be connected to a pressure transducer (6) on voltage-controlled flow valve (1) air chamber.
3, a kind of numerically controlled high-flow regulating valve as claimed in claim 1 or 2 is characterized in that: control the logical valve that ends of the automatically controlled gas that is equipped with on several voltage-controlled flow valves simultaneously with a control function piece (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89102085 CN1028454C (en) | 1989-04-11 | 1989-04-11 | Numerically controlled high-flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89102085 CN1028454C (en) | 1989-04-11 | 1989-04-11 | Numerically controlled high-flow regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1046399A CN1046399A (en) | 1990-10-24 |
| CN1028454C true CN1028454C (en) | 1995-05-17 |
Family
ID=4854534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89102085 Expired - Fee Related CN1028454C (en) | 1989-04-11 | 1989-04-11 | Numerically controlled high-flow regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1028454C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778901A (en) * | 2012-08-02 | 2012-11-14 | 昆山旭虹精密零组件有限公司 | Petroleum flow control system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105302173B (en) * | 2015-11-23 | 2016-11-30 | 华中科技大学 | A kind of barometric pressure servo-control system for high-altitude vehicle |
-
1989
- 1989-04-11 CN CN 89102085 patent/CN1028454C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778901A (en) * | 2012-08-02 | 2012-11-14 | 昆山旭虹精密零组件有限公司 | Petroleum flow control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1046399A (en) | 1990-10-24 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |