Holding system for measuring device

FIELD: measuring equipment engineering.

SUBSTANCE: holding system for measuring device for controlling and/or determining level of environment in reservoir, containing at least one body (13) and at least one elongated block (1). In accordance to invention, body (13) of device includes at least one incision ring (4), which is cut into external layer of elongated block (1) oriented from end process with possible connection of elongated block (1) to body (13) of device electrically, with resistance to compression and stretching.

EFFECT: creation of holding system, by means of which holding block may be fastened on or in a body of device.

8 cl, 3 dwg

 

The invention relates to a mounting system for a measuring device for monitoring and/or determining the level of medium in the vessel containing at least one housing and at least one oblong block.

The applicant produced and distributed various runtime instrumentation cable probes. These measuring devices contain in most cases, the building that hosts the electronic part and installed troso-, cable-, pipe - or rod-like probe. These ropes, cables, pipes or rods below are called for simplicity oblong blocks. The usual designation is also a cable or, in General, the cable probe. These oblong blocks are used, for example, in capacitive measuring technique as an electrode introduced into the tank with the environment. Due to the level of the environment changes the capacitance of the capacitor, the electrode which is oblong block, and thus on this basis we can define and/or control level. In another method of measurement, for example, the measuring pulses are immersed in the environment of an oblong block that serves as a waveguide, is passed to the surface environment. According to the reflected signal can then also make a conclusion about the level. Another application is, for example, a conductive probe, which measured electric is some resistance to the environment and whose level is detected by the arrangement at different heights of several oblong blocks.

These measuring devices with elongated block set usually contains the medium reservoir, and often in the case of the device is docked or not the vessel wall so that the oblong block was immersed inside the tank and on Wednesday. Oblong blocks or are themselves electrically conductive or contain within at least one electrical conductor. Oblong blocks, if necessary, outside covered with electrically insulating layer. This layer provides protection against short circuit or, for example, protection from aggressive environments. Usually oblong blocks connected to the electronic part of the measuring device, which generates or processes the measuring signals. Electronic part is in turn connected to a test point or another parent unit, which processes the measurement results of the level.

The problem is that oblong blocks must be consistent with different conditions, i.e. depending on the size of the tank they should be longer or shorter. They should also, if necessary, to be able to replace, for example, if the environment affects the oblong block or destroy it. This should be a simple replacement of oblong blocks.

Task invented the I is the creation of a fastening system, whereby an elongated block can be mounted on or in the body of the instrument.

This problem is solved according to the invention, due to the fact that in the case of the device is provided by at least one cutting ring, which cuts into the outer layer facing away from the process end of the oblong block with links oblong block with the housing unit electrically, with the compressive strength and/or tensile. Such cutting ring and their application to join the pipes are described, for example, in DE 4038539. The invention has the great advantage that it is very simple. A special advantage is that the design and implementation of an oblong block there are no special requirements, because the connection is provided through the structural elements. For example, does not require any threaded connections, which would otherwise be caused by contact corrosion.

The advantage, for example, that the cutting ring also performs a sealing function. Cutting ring are also standardized products (DIN 2353 and DIN EN ISO 8434-1), which thus is very cheap and simple. In addition, and provides the electrical connection. Depending on the implementation cutter ring may also violate the insulating layer on the outer surface of the elongated block. If e is ω advantage would be in violation of this insulating layer oblong block only there where he should be disturbed for electrical contact. This happens when you pin an oblong block and in the process of fixing. Thus, not have to perform any complex calculations to calculate this release from the isolation of the site or the respective fine tunings. There is, however, the possibility of pre-insulation removal at a particular site, or, at least, its quite thin, and then the implementation of the cutting ring is a very good electrical contact with the elongated block. In General, when replacing an oblong block having to upgrade or replace only him and cutting ring. This can be done by the customer on the spot.

The idea, therefore, consists in fixing the cutting ring on an oblong block. Because the cutting ring is in the body of the instrument, an elongated block cannot be removed from it. The housing of the device can be performed also with the possibility of placing cutting ring, for example, in the excavation and perform cutting ring o functions. This could be implemented, for example, devoid of gaps execution required, for example, in the food industry. The big advantage is that due to the cutting ring, you can create a good electrical pins oblong block. In comparison, for example with a threaded execution in an elongated block, a screw in the housing, the invention also provides the advantage that an oblong block cannot remove the rotational movements that can be caused, for example, an agitator in the tank.

One preferred implementation provides that the diameter of the elongated unit is less than its length. In addition, one implementation includes that of an oblong block is a rope, cable, rod or tube. Thus, it includes all the definitions of wire rope probe. Typically, the diameter lies in the millimeter range, and the length may lie metre range.

One preferred implementation provides that in the case of the device has a built-in sleeve, which covers the cutting ring and the area of the oblong block. This built-in sleeve can be used to kapsulirovanija in the case of the device end of the elongated block. Thus, it provides a great protection device. It is, therefore, a modification of the option when cutting ring placed directly in the body of the instrument.

In one preferred implementation is provided by bolting, which covers the cutting ring and closes the built-in sleeve in the direction of the process. If, following the preliminary, pull oblong block-side process, the cutting ring will be delayed locking nut. In addition, bolting provides sealing from the environment.

One preferred implementation includes the fact that the Union nut is provided a recess in which to place the sealing ring. This ring prevents the penetration of the medium through the outer side of the nut, for example, in the case of the device.

One preferred implementation differs in that in the internal sleeve is provided a screw-in element is arranged to accommodate part of the oblong block. One preferred implementation provides that the screw element and cap nut made and are able detachable connections between them. Thus, it is also possible to provide a reliable and tight connection. It is possible, for example, to provide that the screw element is smaller than bolting, diameter. Due to this plot bolting is the end of the built-in sleeve in the direction of the process. In addition, this can provide greater stability of the built-in sleeve. Similarly, this creates an additional enclosure protection against penetration of environment, because the built-in sleeve is closed is also addressed in the process direction, i.e. due to the built-sleeve the end of the oblong block facing away from the process side as if capsulerebel. If, therefore, the environment penetrates through the oblong block in the internal sleeve, the environment, however, may not enter this path in the housing. In addition, the o-ring on the Union nut seals the passage area between the coupling nut and the housing unit.

One preferred implementation includes the fact that the screw element is designed so that it is electrically connected to the cutting ring. Cutting ring creates electrical contact with an oblong block sent on through the screw element. In this case, on the outer side of the screw element may also be provided an insulating layer.

One preferred implementation includes the fact that in the body of the device has a holder, which is fixed at least one oblong block. The design of integrated sleeve must, therefore, an effective way to approach the housing. Through proper execution of the instrument holder can then fix most optimally and reliably. In addition, you can implement the effect of pressure fixation, only on the Union nut. Moreover, through appropriate executions of the holder, so is x, for example, as molded pressure pads, several oblong blocks can be placed electrically isolated from each other.

The invention is explained in more detail below using the attached drawings, which represent:

- figure 1: disassembled oblong block mounting system;

- figure 2: exploded view of the holder and an elongated block;

- figure 3: sectional view of the casing with built-in oblong blocks.

Figure 1 shows an oblong block 1, which in this example is drawn from the process section 2 of smaller diameter. It can be, for example, on the insulating layer, which in this area 2 has a smaller thickness or removed. On plot 3 put on the cap nut 3. In the Union nut 3 is cutting ring 4. Above is a screw-in element 5. Union nut 3 has a recess 15, which allows you to secure the ring 6 round cross-section for sealing. A screw-in element 5 inserted by section 16 in the cap nut 3 and there if necessary screw up. Thus, the screw element 5 and the cap nut 3 form a built-in sleeve 14.

Figure 2 shows the holder 7. He performs including the task of getting oblong blocks 1 without vibration in the housing 13 of the device. In this case there are three oblong block 1. The holder 7 vypolnenye it this way, that oblong blocks 1 surrounded including gaskets. At the end of the screw elements 5 place the screw clamps 10 to create an electrical connection with oblong blocks 1. For this purpose a screw-in elements 5 provided with hole 12. These holes 12 also facilitate the replacement of oblong blocks 1. The screws 9 are used for fixation of the holder 7 in the housing 13 of the device. The holder 7 includes gaskets, which have including the task electrically isolate from each other the individual oblong blocks 1 to avoid short circuits.

Figure 3 shows the cross section of the housing 13 of the device with built-in holder 7 and its oblong blocks 1. Here you can see how the screws 9 record holder 7 in the housing 13 of the device. The casing 13 of the device is made with the possibility of placing the Union nut 3 in a suitable recess. Built-in sleeve 14, consisting of the Union nut 3 and a screw-in element 5, provides sealing of the device from the environment. Another possibility is the placement of the cutting ring 4 without Union nut 3 directly in the housing 13 of the device. Thus, the Union nut 3 and the ring 6 of circular cross section would be unnecessary, and could be implemented, for example, the installation without gaps. While cutting ring 4 would perform well as a sealing function. Thus, this implementation is snachalo would also what mounting system according to the invention, provides electric, sealed from the environment, resistant to compression and tensile fixation, reliable, also the rotation of the oblong block 1. Since built three oblong block 1, and since the diameter of the oblong block 1 is very small, for example, lies in the millimeter range, and the length may well lie in the meter range, and because the environment can, optionally, be provided with stirrer, between oblong blocks 1, here in the form of rods, are spacers 11.

The reference list of items

1 is an oblong block

2 is a plot of an oblong block of smaller diameter

3 - bolting

4 - cutting ring

5 - screw-in

6 - ring

7 - holder

9 - screw

10 - screw clamp

11 - spacer

12 - hole

13 - the case of the device

14 - built-in sleeve

15 - the notch in the Union nut

16 - part screw-in element of smaller diameter

1. Mounting system for a measuring device for monitoring and/or determining the level of medium in the vessel containing at least one housing (13) and at least one oblong block (1), characterized in that the housing (13) of the device is provided by at least one cutting ring (4)set in n the outer layer facing away from the midst of the end of the oblong block (1) with the possibility of providing electrical contact with an oblong block (1), moreover, oblong unit (1) connected to the housing (13) of the device, ensuring strength in compression and tension, while in the housing (13) of the device has a built-in sleeve (14), which covers the cutting ring (4) and plot oblong block (1)and cap nut (3), which covers the cutting ring (4) and closes the built-in sleeve (14) in the direction of the environment.

2. The system according to claim 1, characterized in that the diameter of the oblong block (1) is less than its length.

3. The system according to claim 1 or 2, characterized in that the oblong block (1) is made in the form of wire, cable, rod, or pipe.

4. The system according to claim 1, characterized in that the Union nut (3) is provided by a recess (15)in which to place the sealing ring (6) of circular cross section.

5. The system according to claim 4, characterized in that in the internal sleeve (15) has a screw-in element (5), is arranged to accommodate part of the oblong block (1).

6. System according to one of claims 1 or 4, or 5, characterized in that the screw-in element (5) and cap nut (3) is executed and are able detachable connections between them.

7. The system according to claim 5, characterized in that the screw-in element (5) is electrically connected with cutting ring (4).

8. The system according to claim 1, characterized in that the housing (13) of the device has a holder (7), which establishes, at the ore, one oblong block (1).



 

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