JPS62224701A - Relay valve gear for pneumatic type pressure controller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a relay valve system for a nitrogen pressure type pressure surface control device, and is equipped with a pylon)*lJB valve, and the pylon)% magnetic square However, the relay pistons can be controlled individually or collectively through an electronic control device k to supply a force for controlling the relay piston.

PRIOR ART Relay valve arrangements of this type are known (e.g.
0+P "Old pressure character and nitrogen pressure science", 29 (1985),
(See No. 8).

In such known relay valve systems used to electrically distort air pressure, a relay piston is used which is biased by a brake loaded spring. The splash is kffl by a toki piston which is created by the soup stock. Thereby, the partial surface of the solenoid valve acts on the relay piston not directly, but by means of a spring.

Problems to be Solved by the Invention As with the above-mentioned known relay valve, if the relay piston is exposed to uneven loads, the seal will eventually become damaged, causing premature failure.

Means for solving the problems According to the present invention, which magnifies the problems described above, the pie four 114
These 14 valves have adjustable pistons! The piston is 1j% full of blood, and the relay piston of the relay valve is switched to the open position, closed position and middle position by the pressure of the a needle or by the pressure difference, and the relay piston of the relay valve is turned to the pressure. be moved accordingly.

rF use and effect The h&according to the present invention is that the total pressure on the relay piston is in the form B't by directly connecting the bicot 11 valve.
The first point of being treated was violated. This total pressure acts uniformly on the relay piston.

The histone seal ring that partitions the control 9111 and the working side is loaded together from the rl't 19111 when pressure is generated, so the seal ring requires only a slight blow load and only a slight misoperation occurs. Does not occur. Stools have a longer useful life.

Also, the partial pressure is fAm due to the pilot'ah stone.
There is an advantage in that the reference pressure of the 'FkL solenoid valve which is later engaged is regulated by the partial pressure of the solenoid valve. The partial pressures are connected in such a way that any desired candy pressure is obtained, the selection for which is made by an electronic control device.

``The measured total pressure acts uniformly on the relay piston/and the relay valve, which relays the pressure and force accordingly to the consumer of the drinking can.

In addition, the magnetic square can be digitally side-blocked, which can additionally be used to control the earth's self-control without any reaction force. The 1st point was also attended.

Also, the number of combinations of magnets and switching positions is large. The air passage leading to the control chamber of the relay piston can be opened or closed without any problems.

Embodiment Next, the water extraction of the present invention will be specifically explained with reference to the embodiment shown in the drawings.

A relay valve according to an embodiment of the present invention includes four six-bottom two-position valves arranged in parallel as pilot valves.
It is illustrated as a square pronk 1 with a magnetic valve (hereinafter referred to as dragon square valve) 2゜3.4.5, and the magnets 6, 7.8 of these four solenoid valves 2, 3, 4.5 .9 is connected to the electronic control unit [10] via a 4-wire metal wire, and to this electronic control unit 10, there is a direct bias generator 11, and a brake pedal. The target value is given via the

Magnets 6.7, 8.9 are movers 12, 13° 14.15
1, and these mouth movements are 12゜13.14.1
5 stile, discharge valves 16, 17, and 18 located in the first row and upper part
．． 19 and these discharge valves 16.17.1
8.19 is the opposite IMt+K eave part, and it is a body that directly receives the material between the suction valves 20, 21, 22, and 23, which monitors the storage conduit 72.

The bottom 91+ K of the magnets 6.7.8.9 are each provided with one adjustment piston installation &24, 25.26.27,
24゜25.26.27 for these fire adjusting piston installations,
fA fireflies 28', 29'.

30', 31' and a ring-shaped valve seat 32.31 which is movable away from the stop against a spring force.
It consists of 33, 34, and 35. The extra piston devices fk24, 25, 26°27 are each adjusted to a different pressure system. In other words, the equipment 24 is Ll, 5 bar (approximately 0.51 YujAt"), and the
Approximately 1.02 bar (approx.
04 klilf/m2), the installed rIL27 is 4 bar (
approximately 4.08 kFif/cm2). On the underside of the valve seats 32, 33, 34, 35 there is one in each case 1i!
J to 36, 37, 38.39 and 2M valve 40.41.4
2.43 is provided, and the suction/closing valve of this 2" JjL valve is held against the valve seat of the suction valve, which is fixed to the casing, by a spring force of 44°45.46. .

From the intermediate chamber 36, 37, 38 one passage each 48° 49
．． 50 opens into the opposite chamber 52, 53, 54 and is correspondingly arranged with a first adjusting piston arrangement [2
4, the negative direction @#, the chamber 55, the Wc part 56 in contact with the outside air is completely closed. Valve spring spring chamber 57゜58.59.60 is storage
! It is closely followed by R61.

A passage 62 extending from the adjustment piston device 27 is connected to a relay and a stone 64 above 1111.
is being followed. Additionally, the relay piston 64 has a fIl-combustion chamber 65 formed on the lower side, and additionally has an additional chamber 65.
This addition 66 allows the relay piston 64 to operate the relay valve 6γ.
Thickness t70 wired in the consumer 69 is wired to the negative # axis reduction location 71.

The mode of operation of this relay valve will be described below.

In the state where no current flows, all 4 6-voice 2
The tilt valves 2, 3, 4.5 cut off the storage pipe 72. When the target value signal generator 11 is fully operated, the control device vt1υ specifies the single or multiple solenoid valves 2.3.4.5 to be controlled in accordance with the next determined target value.

For the sake of clarity, there is 1iI in the electronic control device 10.
Only the sign of the 11-year switch is shown.

The solenoid valve 2 is turned off when electricity is supplied. This closes the discharge valve 16 and opens the suction valve 20. Electricity then flows from the storage pipe 72 to the regulating piston arrangement 24, where it also flows into the metering piston 28.

Then, the adjusting piston 28 rests against the stopper 9, tensioning its adjusting spring 28', and this adjusting spring 28' exerts a reaction force on the adjusting piston 28. In this format, iA
The repelling force and the friction force acting on the adjustment piston 28 are determined by the piston force and define the adjustment output acting from the kite storage 61 to the middle 1st direction 36. The electricity thus adjusted passes through the entire passage 48 and flows into the second crab piston-equipped chamber 52 on the opposite side, and from there, it passes through the passage 49 into the sixth chamber 52.
The adjustment piston arrangement flows into the gong 26, then flows through the passage 50 into the fourth small piston arrangement fIt27, and then continues through -ft6'l' to the upper 'njll N of the relay piston 64. It flows into chamber 63. Then, the relay valve 61 is closed, and the negative length L171 is closed.
When L, the kite's full Qi passes through the production line 65 and reaches the Yi fee secret device 69. At this time, the 1 relay piston 64 is loaded by the spring force and by the pressure to maintain the seal. This is because the same pressure is created at III+]9+IJ of the relay piston 64 during the switching phase and during poor control conditions.

Since the pressure of the IAI piston 24 in the first relay is adjusted to approximately 0.5 bar (approximately 0.51 kPf/crn2), this pressure extends to the relay piston 64 and is controlled. Once a pressure of 2.5 bar (approx. 2.55 kl?fA-rIL2) has been established by the setpoint signal generator 11, an additional -A! The piston arrangement 2b is switched on, and this adjusting piston arrangement 26 supplies a working pressure of 2 bar (approximately 2.04 k&f/crn2) as described above. In this gMIU piston installation, a pressure of 0.5 bar (approximately IL1
．． Since a pressure of 51 yufA7IL2) is acting, in order to maintain the maximum tension of the adjustment piston 30, a pressure of 2.5 bar (approximately 2.55 kilf/crrL2) is applied to the previous side.
pressure must not be applied. This 2.5 bar pressure i reaches the koji control chamber 63 of the 1J pressure piston 64. The relay valve 67 is thus adjusted accordingly.

Target +v, is q generator is 5 bar (5,1kHz/
When the pressure of crIL2) is determined, no current is supplied to the magnet valves 2, 4, and current is supplied to the magnet valve 3.5.

The adjusting piston mounting 25 of the tILm square 3 has a pressure of 1 bar (Fl 1.
02 kgf/cm"), the adjusting piston device [27 of the solenoid valve 5 is 4 bar (approximately 4.081 kgf/cm")].
if/crIL"), so that a pressure of 5 bar acts on the relay piston 64.

Except for this, the adjustment piston device k25 is
j, the quasi-pressure is south of the photo d atmospheric pressure, whereas aI! For the first piston/equipment 27, 1 bar adjusted by the adjusting piston assembly &25 is established as a reference pressure. By corresponding combinations, the pressure at the relay piston 64 (0.5 bar for each stage) is articulated from U bar to 7.5 bar (ie 15 stages).

The number of pressure stages is calculated by the following formula:

D-8M-1 (1) According to this formula, D-Pressure stage 1, S-Number of valve switching positions M=Kagodashi-masu's Eishio Rie has two switching positions & (on/off) The switching stage I interval ΔP for the -0'Di IV between D=2'-1=15 pressure steps P-0 and P=pmax is expressed by the following formula: r.

For example, Pmax = 7.5 bar; 4-1 units with S-2 and M-4. This is also the adjustment stroke of one valve at the cylinder time.

The remaining valves have a total ΔP of all values between 0.5 and 7.5.
−tJ, 5, accordingly.

In the modified embodiment shown in FIG. 2, in place of the 6-bot 2-position solenoid valve and the υ4 springs according to the embodiment shown in FIG.
76, 77, 78, 79 and adjusting piston 2', 29
", 3σ', 31" A similar *R bustle south of the fully equipped square block 75 is shown. The rest of the structure of the valve block 75 is the same as that shown in FIG.
The same symbols are used for the minutes.

Once the adjustment magnets 76, 77, 78, 79 have been used for a while, the basic point is that many intermediate stage I shields can be formed by controlling these four adjustment magnets accordingly. 1st
According to the structure shown in the figure, the '1 magnetic square 2,3°4.5 can be turned on and off, but these adjustment stones 76.7
According to 7.78.79, the haiku method of H's intermediate stage 1 station of Rei, intermediate power, and perfect power is performed, so the following kikai-e stage is carried out.

Switching position 1 = 4fi stone's no 'aki, shackled state, switching position - 2 - state where the grinding stone forms an intermediate force, switching position & 6 - state where the magnet forms a complete force, cram school, these With the six switching positions, a total of D-3'-1-80 steps are obtained for the four deflections of the valve block 75 according to equation (1) above.

For example, when a pressure of 8 bar is to be maintained in the control chamber 63, the combination of four magnets and three switching positions in one valve block results in 80 stages based on equation (2) above. can get.

In order to clarify the effect in the embodiment shown in FIG. 2, each pressure of AffiOJ is described below. The output force and the piston (2) are formed accordingly.

Pressure at each switching position (bar) 79 0 0.1 0.278 0
Ll, 60.677 0 0.9
1.876 0 2.7 5.4
(1 bar - about 1.02 kgf/cm2) For example, 4
．． The Kameko II control selects the switching position of the maple and the magnet for a total pressure adjustment of 7 bar.

Magnet (position &) Pressure cuff 6 (2) e 2.7 pearl +
77 (3) 1.8 bar+
78 (1) 9 0 bar total
4.7 bar (1 bar - approx.
By switching the magnet to the desired position, the respective pressure can be adjusted to exactly V (on average 0.1 bar) without having to respond through the entire pressure sensor.

From the above discussion, yet another advantage is clear. Adjustment magnetic; f: J allows for the middle cancellation of any Kuta Ayu because it is a "mouth" female, so it is a pressure response time! A brief investigation will be held in 6 days for a closed leg production circuit south of the area.

In this case, the relay cell is loaded by two adjusting magnets; a < 1, or by a corresponding stiffness, 0;
Creating a pressure of 5;6 bar, the second adjustment magnet
We will hold a similar discussion of Kumatori 1 shield between 0 and 6 bars. % u s due to the reduced tuning range of each magnet
& improvements were obtained.

Valve block 1.7 broken in the example shown in Fig. 1 and Fig. 2
5 is equipped with a valve that descends with no flow condition. However, in some applications, to ensure good consistent control, the valve position that opens with no flow condition is If you can settle the box with demon money, you will be in the south.

Square c + ivy 8u TH1 & 1ha1, 82°83.8
4 is brake loaded by springs 85, 86, 87, 88 against the magnet adjustment force. In this example, the valves are designated by the reference 90°91.92.93. On the platform where this confectionery is made, the piston device that produces the minimum pressure of 1 is closed. It is not a matter of theoretical Km at least where the IAI piston device that achieves this minimum 8A regulating pressure is located within the direct therapy pillow string (see Figures 1 to 6).This minimum In the embodiment shown in FIG. 3, the adjusting piston device for adjusting the stab pressure may be the last YF93 installed before the beam relay valve 670. ), the closed adjusting piston device is loaded by a reference pressure located in front of it, which acts on the (first two vertical extensions of the closed adjusting piston device). In order to maintain ΔPt''f! in the device, the pressure on the front side is increased accordingly. .

[Brief explanation of drawings]

1 is a schematic sectional view of a relay valve device according to a first embodiment of the present invention, FIG. 2 is a schematic sectional view of a relay valve device according to a second embodiment, and FIG. 3 is a schematic sectional view of a relay valve device according to a second embodiment of the present invention. FIG. 3 is a schematic FfJf plane view of the relay valve device according to the embodiment. 1...Valve block, 2.3.4.5...6 hole 2
Ii' turtle magnet valve, 6.7.8.9... magnet, 10...
Electronic braking device It, 11...Memorial value generator, 12
゜13.14.15...b'' moving child, 16, 17,
18゜19...Discharge valve, 20,21.22.23...
・Suction tank, 24.25.26.27...Adjustment piston installation, 28,29.30.31...Adjustment piston, 2
8', 29゛, 30', 31'...Adjustment blade, 28''. 2!r', 3σ/, 31//...Adjustment piston,
32, 33° 34.35... Valve seat, 36.37, 3
8.39...middle room, 40,41,42.43...
Double valve, 44.45, 46.47... Valve spring, 48.
49° 50...Aisle, 52.53.54...Other side presentation, 55...Load@#, room, 5G...Outside air intake
57゜58.59.60...Splash room, 61...Storage IIL specialist, 62...Aisle, 63...Control and wholesale room, 64
... Relay piston, 65... Work done, 66...
Kuka-nee, 67... Relay dialect, 68... Saving interrogator, 6
9... Night S? vessel, TO... humiliation officer, 71... load melting testing station, 72... storage tube, T5... square date, 76.77.78.19... adjustment magnet, 80 ...
Valve block, 81.8 knots. 83.84...Magnet, 85.8&, 8/, 88...
・Hane, 90, 91.92.93... 28", 2
9", 30", 31"...adjustment screw 64...
Nil Bistono 67...' Leu Valve FI6.2

Claims (1)

[Claims] 1. A relay valve device for a pneumatic pressure control device, which includes pilot solenoid valves (2, 3, 4, 5; 2', 3', 4
', 5'), the pilot solenoid valves are individually or collectively controlled via an electronic control device (10) and supply the force for controlling the relay piston (64). For those with pilot solenoid valve (2
, 3, 4, 5; 2', 3', 4', 5') are adjusting pistons (28, 29, 30, 31; 28'', 29'', 30'')
, 31”), and these adjustment pistons (28
, 29, 30, 31; 28″, 29″, 30″, 31″
) are connected in series and can be switched into an open position, a closed position and an intermediate position by the total pressure or by a pressure difference, and the relay piston (64) of the relay valve (67) is connected to the pressure. 1. A relay valve device for a pneumatic control device, characterized in that it can be moved accordingly. 2. In order to operate the relay piston (64), one or more pilot solenoid valves (2, 3, 4, 5; 2'
, 3', 4', 5') are provided, and these pilot solenoid valves are adjusted to different pressure stages, the sum of these pressure stages being the relay piston (64).
2. A relay valve arrangement according to claim 1, which forms a control pressure for. 3. Adjustment piston of each pilot solenoid valve (28, 29,
30, 31; 28'', 29'', 30'', 31'') are spring loaded. 4. Each of the adjusting pistons (28, 29, 30, 31) is arranged apart from the magnet mover of the pilot solenoid valve (2, 3, 4, 5). 3
The relay valve device according to any one of the preceding paragraphs. 5. Each adjustment piston (28″, 29″, 30″, 31″
) is formed directly in the armature of the magnet (76, 77, 78, 79), and the magnet is configured as an adjustment magnet with a zero position, an intermediate position and a full position of force. The relay valve device according to any one of items 1 to 3. 6. The relay valve device according to any one of claims 1 to 5, wherein the valves (40, 41, 42, 43) are configured as valves that open in a non-current state. 7. The relay valve device according to any one of claims 1 to 5, wherein the valve (90, 91, 92, 93) is configured as a valve that closes in a no-current state. .