Circuit for contactors position detection in turbine machine

FIELD: machine building.

SUBSTANCE: invention relates to the turbine machines. Circuit (10) of individual movements detection of the multiple electric contactors contains multiple modules (A, B, C), each module has contactor (A', B', C') with k different contact positions, in each position it is connected in series with the resistor (RA1, RA2) connected with integral value of state from 1 to k and different from other values of state in single module; at that each module (A, B, C) is connected with the weight coefficient, and these weight coefficients follow the geometric progression with quotient exceeding or equal to k+1; at that value of the electrical conductivity of each resistor is equal; to its state value multiplied by the weight coefficient of its module (A, B, C). Device for individual position detection of the thrust reverse flaps of the jet turbine engine contains the above circuit. Turbine machine comprises the above circuit or the above device for detection.

EFFECT: improved position reading of the contactors.

7 cl, 4 dwg

 

The present invention relates to a detection circuit of the individual provisions of contactors, as well as its application for leaves of thrust reversers in the turbomachine.

Modern machines contain a variety of calculators, each of which receives information from sensors, such as contactors, and interprets this information to determine what actions should be taken.

For example, it relates to a device for reversing the thrust, often used to slow the motion of the aircraft and to facilitate the braking system with the aim of reducing the distance required to stop the aircraft.

As is known, the thrust reverser contains many rotary valves, which open during braking and closed during other phases of flight. Each wing can be equipped with at least three contactors with two States, open and closed, with one contactor is suitable for providing the information about the open position of the sash, the second for the release of information about the closed position of the sash, and the last of the sash lock. In addition, for security reasons you need to duplicate each contactor to ensure the reliability of information sent to the transmitter.

Thus, it is clear that with the increasing number of contact�ditch increase the number of inputs and outputs, which must be interfaced with a computer that requires a larger overall size for the transmitter and a large number of connecting wires between the transmitter and contactors located at the level of the flaps of the thrust reversers.

To solve this problem in its application ARE the applicant has proposed to implement a circuit that contains a two-position contactors are installed in parallel and connected with the resistors, to reduce the number of inputs and outputs.

However, the proposed solutions have several disadvantages. Indeed, in the first case, the failure of one contactor can cause a bad reading of the provisions of other contactors. In the second case it is possible to know the number of open and closed contactors, but not be able Refine their individual situation.

The present invention aims to propose a simple, efficient and economical solution, at least part of these problems.

In this regard, an object of the invention is the contour detection of individual provisions of a plurality of electrical contactors, characterized in that it comprises:

- a plurality of modules connected in parallel or in series and containing, each, a contactor with k different contact positions, each of which he consistently connects with the resistor associated with the integer value comprising�Oia, concluded between 1 and k, the values of the state in the same module, are pairwise different from each other;

- each module is associated with a weight, and these weights follow a geometric progression with denominator greater than or equal to k+1; and the fact that

- the electrical conductivity (or, respectively, the ohmic resistance of each resistor is equal to its state value multiplied by its weighting factor module.

The interfacing circuit in accordance with the invention with the evaluator requires fewer wires, as information about an individual contact position of the contactor obtained by measuring the total conductivity of the circuit, if the modules are connected in parallel, and by measuring the total ohmic resistance, if the modules are arranged in series. Thus, the number of wires connecting the circuit with the transmitter, does not depend on the number of contactors connected in the circuit in parallel or sequentially.

According to the invention, determining the values of conductivity (or resistance) by multiplying the values of the state and the weighting factor module makes the value of the total conductivity (or, respectively, the total ohmic resistance) of the circuit only for this pin�position of each of the contactors. Indeed, the obtained value of the total conductivity (or, respectively, the total ohmic resistance) corresponds to the decomposition of this value to a base value at least equal to k+1, making it the only one.

Thus, the singularity of the conductivity (or, respectively, the ohmic resistance) allows you to define individual contact position of each of the contactors by simple measurement of conductivity (or, respectively, the ohmic resistance).

When modules are connected in parallel and in case of failure of at least one contactor, the latter is in open position. This open position is equivalent to the condition 0 contactor in which he does not participate in the total conductance of the circuit. The measurement of the total conductivity of the contour shows the total value of conductivity different from the values obtained when the contactor is in the contact position (that is connected to the resistor).

Thus, the parallel connection of the modules is preferred over serial connection, as it allows to detect the failure of one or more contactors, as well as see exactly what or which of these contactors is defective. The reliability of the detection circuit is so much higher, and maintenance operations easier�I, since the circuit can be used to identify the location of faulty contactor. In addition, the failure of one or more contactors does not interfere with the determination of individual contact positions working normally contactors.

The invention allows to reduce the number of required inputs on the transmitter with the same amount of information received. Reducing the number of wires reduces the weight of the respective compounds, which leads to decrease in value.

In addition, the modular structure of a circuit allows you to add additional contactors without making significant changes to the circuit, as the number of wires in the direction the computing device is not changed.

Preferably, the modules are connected in parallel, and a set of modules connected in series with an additional resistor to form a bridge voltage divider that reduces the influence of temperature differences, manifested in each of the resistors.

In this configuration, the entire circuit apply voltage and measure the voltage at the terminals of one of the modules.

The object of the invention is also a device that detects individual provisions of the flaps of the Rev. thrust turbojet engine, containing the above-described circuit, in which the position to�of the wire is connected with the position of the sash of the Rev. traction.

In this case, k may be equal to 2, and each of the contact position of the contactor selected so as to provide information on the degree of opening or closing the sash of the Rev. traction.

In the private embodiment, the device comprises at least three of the contactor on the fold, two of which the contactor is used to determine the degree of closure of the sash, and the other contactor is used to determine the degree of opening of the sash.

According to another distinctive feature of the invention, the resistors of the modules installed in the housing remote from contactors thrust reversers and connected to a transmitter that allows you to keep the electrical wiring diagram, identical to the well-known scheme between this case and contactors located at the level of the thrust reversers. In addition, the resistors acts the same temperature, as they are accommodated in one housing.

The object of the invention is also turbomachine such as a turbojet or a turboprop aircraft engine, characterized in that it comprises the above-described detection circuit or device.

The invention and its other details, advantages and distinctive features will be more apparent from the following description provided as a non-restrictive example, with reference to the accompanying drawings, in which:

Fig. - a detection circuit in accordance with the invention, in which the modules are installed in parallel;

Fig. 2 - version of the circuit shown in Fig. 1;

Fig. 3 - integration into the body of the resistors of the circuit in accordance with the invention;

Fig. 4 - contour detection in accordance with the invention, in which the modules are arranged in series.

Fig. 1 shows a detection circuit 10 in accordance with the invention, containing installed in a parallel three modules A, b, C, each of which contains a contactor And a', B', C', arranged to take two of the contact position, in each of which he consistently connects with the resistor. Thus, the contactor is A' module And is connected to two resistors RA1, RA2(the index shows the module and the number of the resistor), a module In connected with two resistors RB1, RB2and the module is connected to two resistors RC1, RC2. In each module, each resistor is associated with a state value different from values of other resistors of the module. These state values are positive and enclosed between 1 and the number of resistors of the module. In the case shown in Fig. 1, resistors RA1, RB1, RC1associated with state 1, and the resistor RA2, RB2, RC2associated with state 2.

Each module is associated with weights�m ratio, moreover, these weights follow a geometric progression with the denominator 3. Thus, module a is associated with a weight factor of 30the module is associated with a weight factor of 31and the module is associated with a weight factor of 32.

The electrical conductivity of the resistor is calculated by multiplying its state values for the weighting factor of the module.

The following table shows the different possible States of each of the contactors of the three modules, and the values of electric conductivity depending on the weighting factor applied to the module.

Module aModuleModule
RA1RA2RB1RB1RC1RC1
Status012 012012
The weighting factor303132
Electrical conductivity (S)0120360918

It should be noted that this table includes also the case if the status of the contactor is zero, which corresponds to an open circuit, i.e. to the case where the contactor is defective. In this case, the conductivity of such a module is zero.

In the case of the circuit shown in Fig. 1, it can be noted that the contactor of module A is in state 2, the contactor module is in the state 0, the corresponding open position, and the contactor module is in position 1. It follows that the total conductance of the circuit is 2+0+9 11.

This value of conductivity is unique and corresponds to only combinations�AI state 2 to the contactor module 1 And, status 0 for the module and status 1 for module C.

Thus, by simple measurement of the total electrical conductivity at the terminals of the circuit can output the position of the contactors, and also to enquire whether the contactor is in the open position and which of the contactors is in the open position corresponding to the defective condition.

The following table takes into account the uniqueness values of the total conductivity of an electrical circuit at various possible combinations of States of the three modules A, b and C.

The status of the module AndThe module statusThe module statusThe total electrical conductivity (S)
0000
1001
2002
0103
11 04
2105
0206
1207
2208
0019
10110
20111
01112
11113
21114
021 15
12116
22117
00218
10219
20220
01221
11222
21223
02224
12225
22226

As shown in Fig. 2, all modules are connected parallel to each other and in series with an additional resistor RS, forming, thus, the loop-divider 12 voltage, thus reducing the effect of temperature on the measurement of voltage.

The entire circuit is applied the supply voltage Vin. The measured parameter is the conductivity at the terminals of the modules, and the voltage Vouton their terminals. However, you need to build a table of correspondence between the read voltage Voutand the total conductance of the circuit, since the different voltage values are not distributed uniformly in the entire range of voltage values, as in the case of the conductivity values.

This option is of particular interest when it is used in the device of the Rev. traction, which is equipped with modern aircraft. In this case, use contactors with two contact positions (k=2). The resistors are mounted in the housing 14 remote from the contactors A, b, C, so all the resistors acts the same temperature, which allows to limit the influence of temperature on the measurement of the voltage (Fig. 3).

Such a thrust reverser can contain multiple folds, each of which is associated with many on-off contactors. In a private configuration, each wing is connected, p� least with three contactors, two of which are used to determine the degree of closure of the sash, and the third is used to determine the degree of opening of the sash. Each of the first two contactors has two positions, allowing you to receive information "shutter closed" or information "the sash is not fully closed". The third contactor has two contact position, allowing access to information "the sash fully open" or information "the shutter is not fully opened".

Thus, the combination of these data allows us to determine open or closed status of the shutter of a device for reversing the thrust.

The device in accordance with the invention can be applied in all modern gas turbine engines with thrust reversers, for example with bars or shutters, as it is used by famous conductors between the housing and the thrust reversers, decreased only the number of conductors between the body and the evaluator.

Fig. 4 shows the circuit 16 in accordance with the invention, in which the modules are arranged in series. The operation of the circuit of this type is identical to the operation of the installation with parallel modules, and reasoning related to Fig. 1 remain valid when talking about ohmic resistances, as in serial connection add resistors. However, it is clear that in the case of consecutive modules, as only one contactor fails (its state is equal with 0), the impedance of the circuit is infinite, and it is impossible to determine which of the contactors of the circuit is faulty, and to determine whether the faulty several contactors.

The invention is described with reference to the drawings, can be easily generalized to N modules, each of which contains a contactor, which can have k different contact positions. It can be noted that the number of contact positions k in each module may differ from one module to another. For example, one module may contain a contactor with k different contact positions, and k1 resistors, which are enclosed between 1 and k1, and the other module contains a contactor with various provisions k2, and k2 resistors, which are enclosed between 1 and k2, with k2 > k1. In this case, each value of electrical conductivity (or, respectively, the ohmic resistance) of each module is determined using a geometric progression with denominator greater than or equal to k2+1, to ensure the singleness of the total electrical conductivity (or, respectively, the total ohmic resistance) of the circuit.

1. The circuit (10) detection of individual provisions of a plurality of electrical contactors, Otley�audica, that contains:
- a plurality of modules (A, b, C) connected in parallel or in series and containing, each, a contactor (A', B', C') with k different contact positions, each of which he consistently connects with a resistor (RA1, RA2, RB1, RB2, RC1, RC2associated with a state value that is entered into between 1 and k, the values of the state in the same module, are pairwise different from each other;
- each module (A, b, C) is associated with a weight, and these weights follow a geometric progression with denominator greater than or equal to k+1; and the fact that
- the electrical conductivity (or respectively the ohmic resistance of each resistor is equal to its state value multiplied by its weighting factor module (A, b, C).

2. The circuit according to claim 1, characterized in that the modules (A, b, C) are connected in parallel, and a set of modules connected in series with an additional resistor (RS) for the formation of bridge-divider (12) voltage.

3. Device detection of individual provisions of the flaps of the Rev. thrust turbojet engine, characterized in that it comprises a circuit (10) according to claim 1, wherein the position of the contactor is connected with the position of the sash of the Rev. traction.

4. The device according to claim 3, characterized in that k RA�but 2, each contact position of the contactor (A', B', C') is chosen in such a way as to give information on the degree of opening or closing the sash of the Rev. traction.

5. The device according to claim 4, characterized in that it comprises at least three of the contactor on a leaf, of which two contactors are used to determine the degree of closure of the sash, and the other contactor is used to determine the degree of opening of the sash.

6. The device according to claim 3, characterized in that the resistors (RA1, RA2, RB1, RB2, RC1, RC2) modules (A, b, C) is installed in the housing (14) remote from the contactor (A', B', C') of the thrust reversers and connected to the computer.

7. Turbomachine such as a turbojet or a turboprop aircraft engine, characterized in that it comprises a circuit (10) detection according to claim 1 or a device according to claim 3.



 

Same patents:

FIELD: electrical engeneering.

SUBSTANCE: apparatus for detecting switch state (1) is used in flight control system installed on the aircrafts. The apparatus including the detecting circuit (4) that emits a signal with established value(VpullUp) when the value of electric quantity (Rint) characterizing the switch state is lower than threshold value called lower threshold (Rferm) and/or signal of another value when the value of said electric quantity is over the threshold value called the upper threshold (Rouvert). The apparatus also contains the adapter circuit (6), resistive bridge formed by resistors (10, 2 and 11) and power circuit (5) so that voltage VA feed to detecting circuit (4) provides for reading the resistance of switch (1). At the same time feed voltage and/or resistance values (10, R1) and (11, R2) are agreed in such a way so that additional current is given for cleaning switch contact.

EFFECT: increased precision of switch opening/closing detection, as well as increased reliability of switch information transfer and reading it by the circuit that receives information regarding switch state.

12 cl, 11 dwg

FIELD: physics, communications.

SUBSTANCE: invention relates to a unit for controlling blocked sockets. The disclosed device has a visual display device which is a ring of coloured areas and a ring of openings; a handle. The device is characterised by that the coloured areas correspond to symmetrical sectors of the ring which is concentric relative the handle. The sectors are formed on a plate which is joined to a support structure at a positioning point on the handle. The colour of the coloured areas and the colour of the plate are in contrast to each other. The visual display device has ring of openings formed on the handle. The openings interact with the coloured areas by turning the handle, which is suitable for changing the open/closed state of the rotating interrupter. The openings are formed on a circular screen which is monolithically joined to the hand, and correspond to the coloured areas. The circular screen has an outline part formed symmetrically about the indicator of the handle.

EFFECT: clear indication of the open/closed state of the rotating interrupter by rotating the handle.

2 cl, 6 dwg

FIELD: physics, communications.

SUBSTANCE: invention relates to a unit for controlling blocked sockets. The disclosed device has a visual display device which is a ring of coloured areas and a ring of openings; a handle. The device is characterised by that the coloured areas correspond to symmetrical sectors of the ring which is concentric relative the handle. The sectors are formed on a plate which is joined to a support structure at a positioning point on the handle. The colour of the coloured areas and the colour of the plate are in contrast to each other. The visual display device has ring of openings formed on the handle. The openings interact with the coloured areas by turning the handle, which is suitable for changing the open/closed state of the rotating interrupter. The openings are formed on a circular screen which is monolithically joined to the hand, and correspond to the coloured areas. The circular screen has an outline part formed symmetrically about the indicator of the handle.

EFFECT: clear indication of the open/closed state of the rotating interrupter by rotating the handle.

2 cl, 6 dwg

FIELD: electrical engeneering.

SUBSTANCE: apparatus for detecting switch state (1) is used in flight control system installed on the aircrafts. The apparatus including the detecting circuit (4) that emits a signal with established value(VpullUp) when the value of electric quantity (Rint) characterizing the switch state is lower than threshold value called lower threshold (Rferm) and/or signal of another value when the value of said electric quantity is over the threshold value called the upper threshold (Rouvert). The apparatus also contains the adapter circuit (6), resistive bridge formed by resistors (10, 2 and 11) and power circuit (5) so that voltage VA feed to detecting circuit (4) provides for reading the resistance of switch (1). At the same time feed voltage and/or resistance values (10, R1) and (11, R2) are agreed in such a way so that additional current is given for cleaning switch contact.

EFFECT: increased precision of switch opening/closing detection, as well as increased reliability of switch information transfer and reading it by the circuit that receives information regarding switch state.

12 cl, 11 dwg

FIELD: machine building.

SUBSTANCE: invention relates to the turbine machines. Circuit (10) of individual movements detection of the multiple electric contactors contains multiple modules (A, B, C), each module has contactor (A', B', C') with k different contact positions, in each position it is connected in series with the resistor (RA1, RA2) connected with integral value of state from 1 to k and different from other values of state in single module; at that each module (A, B, C) is connected with the weight coefficient, and these weight coefficients follow the geometric progression with quotient exceeding or equal to k+1; at that value of the electrical conductivity of each resistor is equal; to its state value multiplied by the weight coefficient of its module (A, B, C). Device for individual position detection of the thrust reverse flaps of the jet turbine engine contains the above circuit. Turbine machine comprises the above circuit or the above device for detection.

EFFECT: improved position reading of the contactors.

7 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: disconnector block for medium voltage installation contains an electric conducting jumper inside a casing. The electric conducting jumper is movable between the working position, where an electric contact is ensured between the first terminal and second terminal located inside the casing, and open position, where there is no electric contact between the first terminal and second terminal. Wherein the electric conducting jumper contains the first driven part inside the casing. The disconnector block additionally has the second driven part, located inside the casing, wherein the first driven part and the second driven part create a non-mechanical connection.

EFFECT: assurance of the improved drive mechanism to connect and to disconnect the voltage transformers in a switching unit.

24 cl, 5 dwg

Up!