RU96236U1 - MAGNETIC INDICATOR FOR PREVENTING UNAUTHORIZED INFLUENCE ON ACCOUNTING DEVICES FOR THE PURPOSE OF DISTURBING THEIR INDICATIONS - Google Patents

Abstract

 1. Magnetic indicator, made with the possibility of placing inside the meter body, and containing a disk that responds by attraction or repulsion to an external magnetic field, characterized in that the indicator disk is mounted on the axis with the possibility of free rotation and with the ability to return to its original position, and the disk contains at least one groove and a stop spring-loaded by the lever for fixing in the groove, placed in the operating state of the meter easily pressed to the surface of the disk or the end of its circumference, and the lever stop and connected to a metering device lockout mechanism or a mechanism for enabling accelerated rotation of meter readings. ! 2. The magnetic indicator according to claim 1, characterized in that it contains a signal mark - an indicator located on the surface of the disk or made in the form of a light indicator. ! 3. The magnetic indicator according to claim 1 or 2, characterized in that the ability to return the disk to its original position is realized by means of a spring fixed at one end to the axis and the other to the rotating disk. ! 4. The magnetic indicator according to claim 1 or 2, characterized in that the disk is magnetized or contains at least one magnet.

Description

Application area

The utility model relates to magnetic field indicators and can be used in metering devices for liquid, gas, electric energy sensitive to the effects of an external magnet in order to prevent unauthorized exposure to them to distort meter readings.

State of the art

The prior art instruments for measuring magnetic fields [1] with a teslameter and a Hall sensor. Due to the bulkiness and the need for a power source, these devices cannot be used in small compact meters for measuring water, gas, electric energy sensitive to the effects of an external magnet in order to prevent unauthorized exposure to them to distort the readings of metering devices.

The prior art known non-contact indicator of the magnetic field [2]. The device is designed for quick and accurate verification of electromagnetic starters and valves. The measurement technique with this device greatly simplified the testing of all pneumatic and hydraulic devices. Functional check of equipment is carried out without stopping the work process. When current passes through the magnetic starter, a field is generated that is recognized by the Testboy 15. The luminous, pointed end of the device indicates the presence of all constant and synthetic magnetic fields. The sensitivity of the device is so high that sometimes there is no need to remove the cover or starter housing. Relays, magnetic coils, contactors, valves and pumps can be tested with a high degree of reliability. Due to cumbersomeness, high sensitivity and the need for a power source, these devices cannot be used in small compact meters for measuring water, gas, electric energy sensitive to the effects of an external magnet in order to prevent unauthorized exposure to them to distort the readings of metering devices.

Since metering devices are exposed to strong magnetic fields, magnetic field indicators should also only respond to strong magnetic fields. Today, the antimagnetic protection of counters is based as a rule on [3] the distribution of domains and magnetic field in magnets used in the design of the meter, either through the use of special antimagnetic segments [4], or due to the fact that the magnetic coupling is protected from external magnetic fields by two antimagnetic rings [5].

With any protection options, the resistance of the meter to the effects of a strong magnet is not large, since the operation of metering devices sensitive to the effects of an external magnet is based on the principle of measuring the number of revolutions of the impeller rotating under the influence of a flow of flowing water or gas. The flow of water enters the meter body through the inlet pipe, passes through the filter, and then enters the measuring chamber, inside which the impeller rotates on solid supports, on the axis of which the magnet of the leading part of the magnetic coupling is mounted. Water, having passed the measuring chamber, enters the outlet pipe of the meter. The number of revolutions of the impeller is proportional to the amount of flowing water.

Thus, whatever the degree of protection against magnetic influence, it can always be overcome more strongly than the protection by an external magnetic field.

The purpose of the utility model is to find a different solution against possible effects of the magnetic field on the meter, expressed in fixing the fact of exposure and taking countermeasures aimed at eliminating the desire to use an unauthorized attempt to influence the meter by the consumer.

Technical result: the indicator allows you to reduce or eliminate the desire of the consumer to unauthorized influence on the meter by blocking the meter, or by a multiple increase in the speed of the meter reading.

Utility Model Implementation

The claimed technical result is achieved due to the fact that the indicator is magnetic, configured to be placed inside the meter body, and containing a disk that responds by attraction or repulsion to an external magnetic field, characterized in that the indicator disk is mounted on the axis with the possibility of free rotation and with the ability to return to its original position, and the disk contains at least one groove and a lever spring-loaded stop for fixing into the groove, placed in the working state of the meter easily fifth to the disc surface or end face of its circumference, and the stop lever is connected with a mechanism blocking metering device or mechanism incorporating accelerated rotation counter readings of the instrument. The ability to return the disk to its original position can be realized by means of a spring fixed at one end to an axis and the other to a rotating disk. In addition, the indicator contains a signal mark-detector located on the surface of the disk, or made in the form of a light indicator. In addition, the disk can be made magnetized or contains at least one magnet.

Brief Description of the Drawings

Figure 1 shows an example of a construction diagram of an indicator with an electric lock, where 1 is the axis of the indicator's rotating disk, 2 is the rotating disk, 3 is the magnet, 4 is the lever with emphasis on the end, 5 is the emphasis spring, 6 is the coil spring of the disk axis , 7 - locking mechanism, 8 - breaking contact, 9 - signal mark, 10 - disk grooves.

Figure 2 shows an example of a design diagram of an indicator with a mechanical interlock, where 11 is a blocking impeller, 12 is an impeller of the main metering system.

Figure 3 shows an example of a design diagram of an indicator with an electric system for accelerating the rotation of the counter readings, where 13 is the mechanism for turning on the accelerated wrapping of the counter readings.

Figure 4 shows an example of a design diagram of an indicator with a mechanical system for accelerating the rotation of meter readings, where 14 is the impeller of the readings during normal operation, 15 is the impeller of the accelerated readings of the readings when exposed to the magnetic field meter, 16 is the mechanism for changing the impellers when triggered an emphasis, 17 - the spring-loaded lever of the mechanism of change of impellers.

Figure 5 shows an example of the reflection of the indicator readings by means of a mechanical signaling device (a - operating state of the meter, b - activation state on the external influence of the magnetic field).

Utility Model Implementation

The magnetic indicator can be implemented as follows. Perform its small size, sufficient to fit the indicator in the housing of the meter.

The basis of the working mechanism of the indicator is a rotating disk (2), which is either magnetized or contains at least one magnet (3) mounted symmetrically or equilibrium on it. The magnetized surface of the disk or magnets (3) react by attraction to an external magnetic field, which is carried out when an unauthorized attempt is made to the meter from the consumer. The indicator disk is made mounted on the axis (1) with the possibility of free rotation, which can be limited by a spiral spring (6), fixed at one end on the axis (1), and the other on a rotating disk (2). The purpose of the spring (6) is to return the disk to its original state after stopping attempts to expose the meter to a magnetic field, i.e. the spring sets the “neutral” position of the disk, and prevents its free rotation.

The disk contains at least one groove (10) and a spring-loaded stop (4) for fixing in the groove, placed in the operating state of the meter easily pressed to the surface of the disk (2) or the end of its circumference. The stop lever (4) is connected to the blocking mechanism (7) of the meter or the mechanism (16) for turning on the accelerated rotation of the meter reading, or is connected to the contact (8) including these elements.

The principle of fixing the fact of impact on the meter is based on the fact that at the time of application of a strong magnet to the meter, the disk (2) in it makes a shift to either side. The shift occurs until the stop is locked in the groove and this pulls the lever. In the electronic metering device, the locking mechanism (7) (see Figure 1) or the accelerated wrapping mechanism (13) (see Figure 3) of the counter can be activated due to the tensioned lever closing the contacts (8). The accelerated wrapping mechanism (13) can be a multiplier of signals that are fed to the adder, which reflects the meter reading. During normal operation of the meter, the multiplier does not work and the readings are read accurately. In case of unauthorized exposure to the meter, the multiplier increases by a specified number or multiple times the counter reading, which automatically serves as a fine for attempting to influence the meter by the consumer.

In a mechanical metering device, the locking mechanism (7) (see Figure 2) can be implemented, for example, by performing a locking mechanism (7) in the form of a lever that locks the locking impeller (11), and it, in turn, locks one of the impellers the main system of the meter (12) and / or fixes the fact that the meter is completely blocked, which stops its work and needs to be replaced. The specialists who control the metering device, having detected the metering device lock, impose a large fine on the user who will no longer want to attempt to influence the metering device in order to distort his testimony. And the mechanism for activating the impeller (15) for turning on the accelerated wrapping (see Figure 4) of the counter can be activated, for example, by activating the lever (4) of the thread, which activates the mechanism through the supporting rotating shaft of the impeller change mechanism (16) when the stop is activated, change (17) of the impeller from the impeller of the readings during normal operation (14) to the impeller of the accelerated readings of the readings under external influence on the magnetic field meter (15). The return to the initial position of the mechanism (17) is ensured by the fact that it is spring-loaded. Thus, during normal operation of the meter, the impeller (14) functions, which has a larger wheel diameter and rotates at lower speeds. And the readings are considered accurate. In case of unauthorized exposure to the meter, the impeller (15) with a smaller wheel diameter is activated, which sharply increases the counter wrapping, which automatically serves as a penalty for attempting to influence the meter by the consumer.

As an additional attribute, an indicator of impact on the meter can be installed, which will show the consumer that he is violating the rules for operating the equipment and the protection of the device is activated either by blocking or wrapping the meter readings, or by other means.

A signaling device in an electronic metering device can be made, for example, in the form of a control diode lamp that lights up when contacts are triggered (8). In a mechanical metering device, the signaling device can be made, for example, in the form of color marks on the disk. And part of the external casing of the meter in the area where the colored marks on the disk pass is transparent so that the user can see them. When the disk is in the normal working position, the end of the stop (4) is located between the grooves of the disk, and the observer sees, for example, a green strip of disk. When placing the indicator in a constant magnetic field (see Figure 5), the disk rotates in one of the sides, trying to occupy the optimal position. The rotation takes place until the end of the stop (4) falls into the groove (10) of the disk and fixes it. In this position of the disk, the observer will see a red strip. Intermediate bands can also be made, for example, yellow, which will warn the user about the further consequences of exposure to the meter if he tries to act carefully. Then the user, seeing that the device is responding to the impact, may refuse further attempts.

When the indicator with the lock function is executed, when the magnetic field is removed, the disk will remain in the “red” position. To return the device to its original working condition, you need to remove the seal from the meter, bend the spring stop until its end comes out of the groove of the disk. The disk under the influence of a spring takes its initial position.

When performing an indicator with the function of accelerated wrapping of meter readings, the end of the stop can be made of a magnet of such a configuration and shape that acts repulsively on the magnetic field. Then, when removing the external magnetic field, the end of the stop (4) will already react to the magnets (3) of the disk or its magnetized surface and will push off from them, returning to the original working state. It is characteristic that the indicator can be executed with a blocking function at the same time using the mechanism of accelerated wrapping of meter readings, which will make it possible to force the user to call the specialists controlling the metering device as soon as possible to repair it and pay a fine. To do this, it is enough not to carry out the end of the stop (4) of magnetic material. Then, when the indicator is triggered, it will be fixed in a new position, which can no longer be removed before opening the seal from the meter.

Information sources:

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Claims (4)

1. Magnetic indicator, made with the possibility of placing inside the meter body, and containing a disk that responds by attraction or repulsion to an external magnetic field, characterized in that the indicator disk is mounted on the axis with the possibility of free rotation and with the ability to return to its original position, and the disk contains at least one groove and a stop spring-loaded by the lever for fixing in the groove, placed in the operating state of the meter easily pressed to the surface of the disk or the end of its circumference, and the lever stop and connected to a metering device lockout mechanism or a mechanism for enabling accelerated rotation of meter readings. 2. The magnetic indicator according to claim 1, characterized in that it contains a signal mark - an indicator located on the surface of the disk or made in the form of a light indicator. 3. The magnetic indicator according to claim 1 or 2, characterized in that the ability to return the disk to its original position is realized by means of a spring fixed at one end to the axis and the other to the rotating disk. 4. The magnetic indicator according to claim 1 or 2, characterized in that the disk is magnetized or contains at least one magnet.