CN103977977A - High pressure water gun pump station gunlock interlocking control method - Google Patents
High pressure water gun pump station gunlock interlocking control method Download PDFInfo
- Publication number
- CN103977977A CN103977977A CN201410235004.8A CN201410235004A CN103977977A CN 103977977 A CN103977977 A CN 103977977A CN 201410235004 A CN201410235004 A CN 201410235004A CN 103977977 A CN103977977 A CN 103977977A
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- Prior art keywords
- pressure
- controller
- high pressure
- pressure water
- hydraulic pump
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
- B08B2203/0223—Electric motor pumps
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- Fluid-Pressure Circuits (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention belongs to the technical field of washing device control and relates to a high pressure water gun pump station gunlock interlocking control method. The method includes the following steps that A. a one-way valve is arranged on a water supply pipeline connected with a high pressure water gun and a high pressure water pump, a pressure switch is arranged on each side of the one-way valve, the output ends of the two pressure switches are connected with a controller, and an output relay of the controller is connected with the high pressure water pump; B. the control logic of the controller is arranged to be that when the two pressure switches detect a non-pressure signal simultaneously, namely the logic value is 0, the logic value of the output relay of the controller is 1, and the high pressure water pump is operated; when any of the two pressure switches has state change, namely the logic value is from 0 to 1 or from 1 to 0, the logic value of the controller changes from 1 to 0, the controller outputs a stopping signal to the high pressure water pump in a delaying mode, and the high pressure water pump can stop in a delaying mode. The high pressure water gun controls the high pressure water pump and achieves the effects of saving energy and being safe and wide in adaptability.
Description
Technical field
The invention belongs to cleaning equipment control technology field, relate to a kind of chain control method of gunlock of giant pumping plant.
Background technology
In actual life, the giant that carwash or cleaning equipment are used is configured to: high-pressure hydraulic pump, water pipe, hydraulic giant.Be that water pump is directly connected with hydraulic giant, open after water pump the effect of hydraulic giant competence exertion.People in actual use, need to first open water pump, and then go to the position that need to clean and carry out operation, after cleaning, need again to walk to return to switch off the pump, very inconvenient.In addition, also have the problem of security, in the time of people's operation, slip out of the hand because contingency causes hydraulic giant, hydraulic giant cuts out, and water pump can not be closed down in time, likely causes danger.Therefore, poor by the mode operability of pump control hydraulic giant.
People are through constantly exploring, various solutions have been proposed, as Chinese patent literature discloses a kind of supply-water pump control device [notification number: CN203061526U] of lathe hydraulic giant, comprise water pump, ball valve, check valve, point water piece, pressure switch, water pipe and hydraulic giant; Described water pump is connected with the left end of described ball valve; The right-hand member of described ball valve is connected with the left end of described check valve; The right-hand member of described check valve is connected with described point of water piece; Described pressure switch is connected with described point of water piece; Described water pipe is connected with described point of water piece; Described hydraulic giant is arranged on described water pipe.
Such scheme water pump can, according to the open and close state of hydraulic giant reality, open, stop automatically, without Artificial Control, and handled easily; In addition, water pump, without long-play, has not only extended the service life of water pump, and has saved in a large number electric power resource, reduces cost of use.But such scheme is only provided with a pressure switch, in actual use, security performance is not good enough and need to change different nozzles and could realize different working pressures, and the applicability of equipment is poor.
Conventionally, single pressure switch has two kinds of mounting means, and one is contained in before unloader, and one is to be contained in after pressure regulator valve (unloader and pressure regulator valve difference: unloader can only off-load, when off-load, keep setting pressure, pressure regulator valve can electrodeless adjusting pressure and pressure trend 0 when full off-load).
Be contained in before unloader: be 10MPa as set relief valve off-load value, pressure switch preset value is 9MPa (preset value of pressure switch does not allow operation change after dispatching from the factory).Require pressure will use 1# nozzle while being 5MPa, closing the pressure in pipeline after spray gun will raise suddenly, and in the time rising to 9MPa, machine just can stop.Require pressure will change 2# nozzle while being 2MPa, it is also same in the time rising to 9MPa closing after spray gun, and machine just can stop; Need nozzle that multiple pressure will a lot of models for subsequent use in order to changing, obviously not too convenient, that is to say that to join adaptive poor.
And in real process, close suddenly spray gun, will produce compression shock, instantaneously have 1.5 times of above preset pressure or higher, pressure can not discharge rapidly will cause the danger such as booster, leakage.Because this mode has a lasting back pressure can determine pipeline off-load time, its danger is higher.
Be contained in after pressure regulator valve: the force value while setting full off-load, in the time that pressure switch detects full off-load, equipment stops.This pressure switch is generally diaphragm type structure, facts have proved that its reliability is very poor at present, is difficult to this unexpected compression shock of tolerance, and therefore security is poor.
Summary of the invention
The object of the invention is for the problems referred to above, a kind of chain control method of gunlock that can improve the security of giant pumping plant and controlled giant pumping plant is provided.
For achieving the above object, the present invention has adopted following technical proposal: a kind of chain control method of gunlock of giant pumping plant, comprises the following steps:
A, on the water supply line that connects giant and high-pressure hydraulic pump, a check valve is set, a pressure switch is respectively set in check valve both sides, the output of two pressure switches connects controller, the output relay of controller connects high-pressure hydraulic pump, and two pressure switches are set to different pressure set points;
The control logic of B, setting controller is: it is that logical value is 0 o'clock that two pressure switches detect without pressure signal simultaneously, and the output relay logical value of controller is 1, operation high-pressure hydraulic pump; Two any one generation state variation of pressure switch are logical value 0 to 1 or 1 to 0, and the logical value of controller all can be by 1 change 0, and delaying time of controller output stop signal is to high-pressure hydraulic pump, and high-pressure hydraulic pump can stop in time delay.
In the chain control method of gunlock of above-mentioned giant pumping plant, pressure switch is electronics or the mechanical pressure switch of energy detection signal and output signal, and controller is PLC or relay logic Control Component.
Compared with prior art, the invention has the advantages that:
What two pressure switches detected is qualitative value, do not need very accurately, therefore sensitivity is higher, and the structural shape of two pressure switches and check valve is plunger type, prevent that " water hammer " phenomenon in pressure duct from impacting destruction to high-pressure pump, facts have proved that its performance is very stable and reliable; Compared with the control of single pressure switch, the off-load of two pressure switch pressure is rapider, and security is higher, is applicable to the operation of different pressures, and applicability is wider; It is chain that the present invention has realized gunlock, with giant control high-pressure hydraulic pump, reached energy-conservation, safety, effect that applicability is wide.
Brief description of the drawings
Fig. 1 is structural representation provided by the invention;
Fig. 2 is the input and output schematic diagram of controller provided by the invention.
In figure: giant 1, high-pressure hydraulic pump 2, water supply line 3, check valve 4, pressure switch 5, controller 6.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As shown in Figure 1, the chain control method of a kind of gunlock of giant pumping plant, is characterized in that, comprises the following steps:
A, on the water supply line 3 that connects giant 1 and high-pressure hydraulic pump 2, a check valve 4 is set, in check valve 4 both sides, a pressure switch 5 is respectively set, the output of two pressure switches 5 connects controller 6, the output relay of controller 6 connects high-pressure hydraulic pump 2, and two pressure switches 5 are set to different pressure set points;
The control logic of B, setting controller 6 is: it is that logical value is 0 o'clock that two pressure switches 5 detect without pressure signal simultaneously, and the output relay logical value of controller 6 is 1, operation high-pressure hydraulic pump 2; Two pressure switch 5 any one generation state variation are logical value 0 to 1 or 1 to 0, and the logical value of controller 6 all can be by 1 change 0, and controller 6 time delays output stop signals are to high-pressure hydraulic pump 2, and high-pressure hydraulic pump 2 can stop in time delay.
Pressure switch 5 is electronics or the mechanical pressure switch of energy detection signal and output signal, and controller 6 is PLC or relay logic Control Component.
Operation principle of the present invention is as follows: as shown in Figure 2, controller 6 connects two pressure switches 5 by data wire and 2, two pressure switches 5 of high-pressure hydraulic pump can be transferred to controller 6 by logical value separately.The pressure detecting when pressure switch 5 during lower than setting value output relay in normally open, logical value is 0, Pressure switch relay closure in the time detecting that pressure is greater than setting value, logical value is 1, in this example, two manometric pressure set points are for being respectively 5MPa and 10MPa.
The control logic of controller 50 is as shown in table 1 below:
Table 1
Be logical value while being 0 when the first pressure switch 42 and the second pressure switch 43 detect without pressure signal simultaneously, the logical value of the output relay of controller 44 is 1, operation high-pressure hydraulic pump 20.
High-pressure hydraulic pump 20 is under the state of operation, two any one generation state variation (logical value 0 to 1 or 1 to 0) of pressure switch, the logical value of controller 50 all can be stopped by 1 change 0 time delay output, high-pressure hydraulic pump 20 can stop in time delay, and the time that time delay stops can being inputted in controller 50.
Table 2 is the service behaviour comparisons without pressure switch, single pressure switch and two pressure switches.
Table 2
Table 3 is result comparisons of table 2.
Table 3
By the comparative analysis of table 2, table 3, two pressure switches have the following advantages:
1) pressure can step-less adjustment, and does not need to change nozzle, as long as regulate pressure regulator valve just can accomplish, practicality is wider.
2) what two pressure switches detected is qualitative value, does not need very accurately (being greater than pressure switch setting value logical value is exactly 1, and being less than setting value is exactly 0).
3) two pressure switch construction patterns are plunger types, facts have proved that its performance is very stable and reliable.
4) have lasting back pressure when single pressure switch off-load, be not as rapider as two pressure switch off-loads, the security of two pressure switches is better.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendments or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although more used the terms such as water supply line 10, flexible pipe 11, high-pressure hydraulic pump 20, giant 30, gunlock interlock 40, check valve 41, the first pressure switch 42, the second pressure switch 43, controller 50, pressure regulator valve 51, energy storage tank 52, Pressure gauge 53 herein, do not got rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present invention; They are construed to any additional restriction is all contrary with spirit of the present invention.
Claims (2)
1. the chain control method of the gunlock of giant pumping plant, is characterized in that, comprises the following steps:
A, a check valve (4) is set connecting on giant (1) and the water supply line (3) of high-pressure hydraulic pump (2), in check valve (4) both sides, a pressure switch (5) is respectively set, the output of two pressure switches (5) connects controller (6), the output relay of controller (6) connects high-pressure hydraulic pump (2), and two pressure switches (5) are set to different pressure set points;
The control logic of B, setting controller (6) is: it is that logical value is 0 o'clock that two pressure switches (5) detect without pressure signal simultaneously, the output relay logical value of controller (6) is 1, operation high-pressure hydraulic pump (2); Any one generation state variation of two pressure switches (5) is logical value 0 to 1 or 1 to 0, the logical value of controller (6) all can be by 1 change 0, controller (6) time delay output stop signal is to high-pressure hydraulic pump (2), and high-pressure hydraulic pump (2) can stop in time delay.
2. the chain control method of the gunlock of giant pumping plant according to claim 1, it is characterized in that, pressure switch (5) is electronics or the mechanical pressure switch of energy detection signal and output signal, and controller (6) is PLC or relay logic Control Component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235004.8A CN103977977B (en) | 2014-05-29 | 2014-05-29 | The chain control method of gunlock of giant pumping plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235004.8A CN103977977B (en) | 2014-05-29 | 2014-05-29 | The chain control method of gunlock of giant pumping plant |
Publications (2)
| Publication Number | Publication Date |
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| CN103977977A true CN103977977A (en) | 2014-08-13 |
| CN103977977B CN103977977B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410235004.8A Expired - Fee Related CN103977977B (en) | 2014-05-29 | 2014-05-29 | The chain control method of gunlock of giant pumping plant |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4180374A (en) * | 1978-03-07 | 1979-12-25 | Bristow Elliott R | Well pump protection system |
| US4435127A (en) * | 1980-10-02 | 1984-03-06 | Kraenzle Josef | Apparatus with latching effect for limiting pressure in liquid feeding systems |
| DE3526024A1 (en) * | 1985-07-20 | 1987-01-29 | Kaercher Gmbh & Co Alfred | High-pressure cleaning device |
| JP2832803B2 (en) * | 1994-12-31 | 1998-12-09 | 株式会社共和製作所 | Cleaning device and pressure switch for cleaning device |
| CN202860889U (en) * | 2012-10-23 | 2013-04-10 | 谭建忠 | Automatic start-stop device for high pressure water cleaning device |
| CN203061526U (en) * | 2012-12-25 | 2013-07-17 | 纽威数控装备（苏州）有限公司 | Water conveying pump control device for machine tool water gun |
-
2014
- 2014-05-29 CN CN201410235004.8A patent/CN103977977B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4180374A (en) * | 1978-03-07 | 1979-12-25 | Bristow Elliott R | Well pump protection system |
| US4435127A (en) * | 1980-10-02 | 1984-03-06 | Kraenzle Josef | Apparatus with latching effect for limiting pressure in liquid feeding systems |
| DE3526024A1 (en) * | 1985-07-20 | 1987-01-29 | Kaercher Gmbh & Co Alfred | High-pressure cleaning device |
| JP2832803B2 (en) * | 1994-12-31 | 1998-12-09 | 株式会社共和製作所 | Cleaning device and pressure switch for cleaning device |
| CN202860889U (en) * | 2012-10-23 | 2013-04-10 | 谭建忠 | Automatic start-stop device for high pressure water cleaning device |
| CN203061526U (en) * | 2012-12-25 | 2013-07-17 | 纽威数控装备（苏州）有限公司 | Water conveying pump control device for machine tool water gun |
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| Publication number | Publication date |
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| CN103977977B (en) | 2016-08-10 |
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Granted publication date: 20160810 Termination date: 20180529 |