CN215295505U - Constant-pressure fluid infusion control device - Google Patents
Constant-pressure fluid infusion control device Download PDFInfo
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- CN215295505U CN215295505U CN202121048778.1U CN202121048778U CN215295505U CN 215295505 U CN215295505 U CN 215295505U CN 202121048778 U CN202121048778 U CN 202121048778U CN 215295505 U CN215295505 U CN 215295505U
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- electromagnetic valve
- fluid infusion
- digital controller
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- output digital
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Abstract
The utility model discloses a level pressure fluid infusion controlling means, liquid circulation between the main line of water tank and closed circuit structure, including liquid road system and control system, wherein liquid road system includes first solenoid valve, second solenoid valve, fluid infusion pump, and control system includes dual output digital controller, first relay, second relay, pressure sensor. The utility model discloses the principle is simple, and control is convenient, and level pressure fluid infusion device can reduce cost, and control is stable as independent module.
Description
Technical Field
The utility model relates to a cold liquid equipment field specifically is a level pressure fluid infusion controlling means.
Background
The cold liquid equipment can be divided into an open system and a closed system according to a liquid supply system, the number of the open systems is large, circulating liquid of the open system is generally contacted with air in a water tank, impurities are easily brought into a circulating liquid loop system, and waste is brought to circulating liquid replacement; the circulating liquid of the closed system flows in a closed pipeline, so that the quality of the circulating liquid is kept, and the liquid supplement is not wasted. At present, in the prior art, a control circuit board or a PLC with analog quantities such as pressure or temperature is generally adopted to perform liquid supplementing control on a closed system of cold and night equipment, which requires development cost and time cost of extra hardware and software and is not beneficial to standardization and modularization of product design.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a level pressure fluid infusion controlling means to when solving prior art cold night equipment fluid infusion control and adopting control circuit board or PLC that have analog quantities such as pressure or temperature, the difficult standardized and modular problem that exists.
In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:
the utility model provides a level pressure fluid infusion controlling means for the main line fluid infusion of water tank through self fluid infusion mouth to closed circuit structure to and the pressure release mouth pressure release of main line to water tank, its characterized in that: including liquid way system and control system, wherein:
the liquid path system comprises a first electromagnetic valve, a second electromagnetic valve and a liquid supplementing pump, a pressure relief port of the water tank is communicated with the main line through the first electromagnetic valve, and a liquid supplementing port of the water tank is communicated with the main line sequentially through the liquid supplementing pump and the second electromagnetic valve;
the control system comprises a double-output digital controller, a first relay, a second relay and a pressure sensor, the pressure sensor is arranged on the main pipeline to collect hydraulic pressure in the main pipeline, the double-output digital controller is electrically connected between the live wire and the zero line through a power supply end of the double-output digital controller, an electric quantity input end of the double-output digital controller is electrically connected with the pressure sensor, one electric quantity output end of the double-output digital controller is electrically connected with the zero line through a first relay coil, the other electric quantity output end of the double-output digital controller is electrically connected with the zero line through a second relay coil, the first relay is provided with a normally open contact which is connected with the first electromagnetic valve in series and then is electrically connected between the live wire and the zero wire, the second relay is provided with a normally open contact which is connected with the second electromagnetic valve in series and then electrically connected between the live wire and the zero wire, and the second electromagnetic valve is electrically connected with the liquid supplementing pump in parallel.
The constant-pressure fluid infusion control device is characterized in that: the model of the dual-output digital controller is ohm dragon E5CC-CX2 ASM-804.
The constant-pressure fluid infusion control device is characterized in that: in the liquid path system, the first electromagnetic valve is also communicated with a first ball valve in parallel.
The constant-pressure fluid infusion control device is characterized in that: in the liquid path system, the second electromagnetic valve is also communicated with a second ball valve in parallel.
In order to maintain the static pressure stability in the closed system, the utility model discloses a simple structure, control convenient device control system for solve the level pressure fluid infusion of closed system mesocycle liquid. The double-output digital controller is applied to a constant-pressure fluid infusion control system through circuit design, and cost reduction and modular design of the device are facilitated.
The beneficial effects of the utility model are embodied in:
1) the principle is simple, and the control is convenient.
2) The control system of the constant-pressure fluid infusion device can be independent of a large system and does not participate in the control of the large system, and the constant-pressure fluid infusion device is used as an independent module.
3) The dual-output digital controller is used as a control core, so that the cost can be reduced, and the control is stable.
Drawings
Fig. 1 is a schematic diagram of the structure of the liquid path system of the present invention.
Fig. 2 is a schematic diagram of the structure of the control system of the present invention.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1, the present invention relates to a constant pressure fluid infusion control device, which is used for the fluid circulation between a water tank 1 and a main pipeline 8 with a closed loop structure, wherein the closed loop of the main pipeline 8 means that the fluid flowing out from the end B will finally return to such a closed loop from the end a. Wherein, the water tank 1 supplies liquid to the main pipeline 8 through the liquid supply port, and the main pipeline 8 releases pressure to the water tank 1 through the pressure release port of the water tank 1.
The utility model discloses a by the liquid route system that first solenoid valve 2, first ball valve 3, second solenoid valve 4, second ball valve 5, fluid infusion pump 6 constitute to and be the control system that ohm dragon E5CC-CX2 ASM-804's dual output digital controller AP, first relay, second relay constitute by pressure sensor 7, model.
A pressure relief opening of the water tank 1 is communicated with one end of a first electromagnetic valve 2 through a pipeline, the other end of the first electromagnetic valve 2 is communicated with a main pipeline 8 through a pipeline, and a first ball valve 3 is communicated with two ends of the first electromagnetic valve 2 through pipelines in parallel. A fluid infusion port of the water tank 1 is communicated with an inlet of a fluid infusion pump 6 through a pipeline, an outlet of the fluid infusion pump 6 is communicated with one end of a second electromagnetic valve 4 through a pipeline, the other end of the second electromagnetic valve 4 is communicated with a main pipeline 8 through a pipeline, and a second ball valve 5 is communicated with two ends of the second electromagnetic valve 4 in parallel through pipelines; the pressure sensor 7 is installed in the main line 8 to collect hydraulic pressure inside the main line 8.
The utility model discloses a control core is done to dual output digital controller AP, and live wire L, N contact electricity connection zero line N is connected to dual output digital controller AP's L contact electricity. The dual-output digital controller AP is electrically connected with the pressure sensor 7 through in + and in-contacts to receive signals collected by the pressure sensor 7, an out1 contact of the dual-output digital controller AP is electrically connected with a zero line N through a first relay coil K1, and an out2 contact of the dual-output digital controller AP is electrically connected with the zero line N through a second relay coil K2. The first relay is provided with a normally open contact K1.1 which is connected with the first electromagnetic valve 2 in series and then electrically connected between the live wire L and the zero wire N; the second relay is provided with a normally open contact K2.1 which is connected with the second electromagnetic valve 4 in series and then electrically connected between the live wire L and the zero wire N, and the second electromagnetic valve 4 is electrically connected with the fluid infusion pump 6 in parallel.
The dual-output digital controller AP controls the output point to be electrified by setting the upper limit and the lower limit of the pressure value: setting a pressure value X, setting an upper limit Y1 of the pressure value, and setting an upper limit positive output of an out1 contact pressure value, namely, the pressure value is greater than the pressure value X + Y1, and the out1 is electrified; and setting a lower limit Y2 of the pressure value and an upper limit of the contact pressure value of the out2 for reverse output, namely, the upper limit is smaller than the pressure value X-Y2, and the out2 is electrified.
When the actual pressure value is smaller than the set value X-Y2, the out2 is electrified, the second relay coil K2 is electrified, the second relay normally open contact K2.1 is closed, the second electromagnetic valve 4 is electrified, and the fluid infusion pump 6 is electrified. When the pressure of the main pipeline 8 rises to X, the out2 is powered off, and the second electromagnetic valve 4 and the fluid replacement pump 6 stop working.
When the actual pressure value is larger than the set value X + Y1, the out1 is electrified, the first relay coil K1 is electrified, the first relay normally open contact K1.1 is closed, and the first electromagnetic valve 2 is electrified. The main pipeline 8 begins to discharge the circulating liquid to the water tank 1, the pressure of the main pipeline 8 is reduced to X, the out1 is cut off, and the first electromagnetic valve 2 stops working.
The embodiments of the present invention are only descriptions of the preferred embodiments of the present invention, not right the present invention is designed and limited, without departing from the design concept of the present invention, the technical personnel in the field should fall into the protection scope of the present invention for various modifications and improvements made by the technical solution of the present invention, and the technical contents of the present invention are all recorded in the claims.
Claims (4)
1. The utility model provides a level pressure fluid infusion controlling means for the main line fluid infusion of water tank through self fluid infusion mouth to closed circuit structure to and the pressure release mouth pressure release of main line to water tank, its characterized in that: including liquid way system and control system, wherein:
the liquid path system comprises a first electromagnetic valve, a second electromagnetic valve and a liquid supplementing pump, a pressure relief port of the water tank is communicated with the main line through the first electromagnetic valve, and a liquid supplementing port of the water tank is communicated with the main line sequentially through the liquid supplementing pump and the second electromagnetic valve;
the control system comprises a double-output digital controller, a first relay, a second relay and a pressure sensor, the pressure sensor is arranged on the main pipeline to collect hydraulic pressure in the main pipeline, the double-output digital controller is electrically connected between the live wire and the zero line through a power supply end of the double-output digital controller, an electric quantity input end of the double-output digital controller is electrically connected with the pressure sensor, one electric quantity output end of the double-output digital controller is electrically connected with the zero line through a first relay coil, the other electric quantity output end of the double-output digital controller is electrically connected with the zero line through a second relay coil, the first relay is provided with a normally open contact which is connected with the first electromagnetic valve in series and then is electrically connected between the live wire and the zero wire, the second relay is provided with a normally open contact which is connected with the second electromagnetic valve in series and then electrically connected between the live wire and the zero wire, and the second electromagnetic valve is electrically connected with the liquid supplementing pump in parallel.
2. A constant pressure fluid infusion control device as claimed in claim 1, wherein: the model of the dual-output digital controller is ohm dragon E5CC-CX2 ASM-804.
3. A constant pressure fluid infusion control device as claimed in claim 1, wherein: in the liquid path system, the first electromagnetic valve is also communicated with a first ball valve in parallel.
4. A constant pressure fluid infusion control device as claimed in claim 1, wherein: in the liquid path system, the second electromagnetic valve is also communicated with a second ball valve in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121048778.1U CN215295505U (en) | 2021-05-17 | 2021-05-17 | Constant-pressure fluid infusion control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121048778.1U CN215295505U (en) | 2021-05-17 | 2021-05-17 | Constant-pressure fluid infusion control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215295505U true CN215295505U (en) | 2021-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121048778.1U Active CN215295505U (en) | 2021-05-17 | 2021-05-17 | Constant-pressure fluid infusion control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215295505U (en) |
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2021
- 2021-05-17 CN CN202121048778.1U patent/CN215295505U/en active Active
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