RU177884U1 - DEVICE FOR MECHANICAL CLEANING OF THE MEASURING PIPE OF THE TANK LEVEL - Google Patents

Abstract

The utility model relates to technical means for mechanical cleaning of the paraffin deposits of a measuring pipe of a level gauge of a vertical steel tank intended for receiving, storing and dispensing oil and oil products. The technical problem that the utility model addresses is the development of a device for mechanically cleaning the measuring tube of a tank, which is simple in design and easy to operate. The technical result achieved by the implementation of the utility model is to simplify the design of the cleaning device of the measuring tube of the tank. The device comprises a rod, a frame, a deflecting unit, a winch, a treatment piston and a limiter. The cleaning piston contains discs made of polyurethane. In the utility model, a simplification of the design is achieved while ensuring convenience and efficiency in operation. 8 s.p. f-ly, 2 ill.

Description

The utility model relates to technical means for mechanical cleaning of the paraffin deposits of a measuring pipe of a level gauge of a vertical steel tank intended for receiving, storing and dispensing oil and oil products.

When operating steel tanks of the type RVSP and RVSPK used at oil transportation and oil producing enterprises, the only method is provided for cleaning the measuring tube of the level gauge from paraffin deposits - flushing with the help of a mobile upgraded dewaxing unit (ADPM), for example ADPM 12/150. Using ADPM with the use of the Diogen type sediment erosion device, a full range of erosion and removal of bottom sediments from tanks is carried out, however, using the unit only to clean the measuring tube of the level gauge is inefficient, very time-consuming and time-consuming.

The prior art device for cleaning the inner surface of the pipeline of variable diameter (patent for utility model RU 125104 U1, publ. 02/27/2013, IPC: VB 9/00).

The device comprises a housing consisting of individual pipes with flanges for mounting discs. Between the pipes there are disks made in the form of two disks directly attached to each other with peripheral V-shaped cutouts on each of them displaced relative to each other. At the same time, disks are located at the ends of the device, which are fixed by covers. The disadvantage of the device when used for mechanical cleaning of the paraffin deposits of the measuring pipe of the level gauge of vertical steel tanks is the need to supply a pumped medium to create a pressure differential before and after the device, which will require the use of additional technical means and, therefore, a significant complication of the design.

A device for cleaning the guide pipe of a level measuring system is also known (patent for utility model RU 141365 U1, publ. 05.27.2014, IPC: V08V 9/055).

The utility model is intended for cleaning vertical and inclined pipes, in particular for cleaning paraffin deposits of the measuring pipe of the level gauge included in the system for measuring the oil level in tanks. Using a sectional pipeline and nozzle, the working substance is delivered to the surface of the pipe to be cleaned. Through the perforation holes, the working substance due to the dynamic component provides erosion of contamination. The use of a working substance, in particular hot oil, requires the use of additional technical means, and the absence of tight mechanical contact of the nozzle with the surface being cleaned increases the duration of cleaning. In addition, the device does not have a special mechanism for lifting the nozzle, and the use of a sectional pipeline for this purpose can damage the latter.

The technical problem that the utility model addresses is the development of a device for mechanically cleaning the measuring tube of a tank, which is simple in design and easy to operate.

The technical result achieved by the implementation of the utility model is to simplify the design of the cleaning device of the measuring tube of the tank.

The technical problem is solved, and the specified technical result is achieved due to the fact that the device for mechanical cleaning of the measuring tube of the tank gauge contains a rod, a frame, a deflecting unit, a winch, a cleaning piston and a limiter, and the frame with a winch mounted on it is made with the possibility of mounting on a flange measuring tube of the level gauge, the treatment piston includes external disks, internal disks and dividing disks, fastened with the upper clamp and the lower clamp with a bolted connection, tanga, comprising separate sections pivotably connected to the deflector unit and adapted to change the overall length.

In addition, the specified technical result is achieved in special cases of the implementation of the utility model due to the fact that:

- the rod section is made of aluminum pipe, at one end of which a sleeve with an external thread is installed, and at the other end a sleeve with an internal thread is installed;

- the deflecting unit contains guide rollers made of bronze;

- the treatment piston is made up of at least two external disks and two internal disks;

- the external disk and the internal disk are made of polyurethane, and the diameters of the disks are connected by a ratio of 1: 1.05-1.1;

- the inner disk contains four through holes on the cleaning surface, located evenly around the perimeter of the circle;

- the diameter of the inner disk and the diameter of the measuring tube of the level gauge are connected by a ratio of 1: 1;

- the limiter contains a sleeve with a female thread;

- a manual drum winch with a rope capacity of 50 m was used as a winch.

The implementation of the utility model is disclosed using FIG. 1 and 2. In FIG. 1 shows a section through a main view of a device for mechanically cleaning a measuring tube of a tank level gauge; FIG. 2 shows a 3D model of the claimed device (without rod and limiter).

In the drawings indicated:

1 - rod;

2 - frame;

3-block deflecting;

4 - winch;

5 - treatment piston;

6 - external drive;

7 - internal disk;

8, 9 - sleeve;

10 - hinge;

11 - upper clip;

12 - partition disk;

13 - lower clip;

14 - limiter;

15 - measuring tube of the level gauge.

A device for mechanical cleaning of the measuring pipe of the tank level gauge (Fig. 1) contains a rod 1, a frame 2, a deflecting unit 3, a winch 4, a treatment piston 5 and a limiter 14.

In a frame 2 made of steel corners, a winch 4 is fixed, one end of the cable of which is fixed motionless in the frame, and the other end is wound on the drum of the winch 4. As a winch for a variant of the device for mechanical cleaning of the measuring tube of the tank gauge, a manual drum winch with a rope capacity is used 50 m

In the bottom of the frame 2, a hole is made for the passage of the treatment piston 5, as well as holes for bolts, with which the frame is mounted on the flange of the measuring tube of the level gauge 15.

The purification piston 5 includes external 6 disks, internal 7 disks and dividing disks 12. All disks are fastened with the upper clamp 11 and the lower clamp 13 with a bolted joint. A thread is made on the lower clip 13 for screwing the stopper 14, for which a sleeve with a female thread is installed in it (not indicated in FIG. 1). The limiter prevents the treatment piston 5 from falling out of the measuring tube of the level gauge 15.

The cleaning piston 5 is made of at least two external and two internal disks, between which there are separation discs 12. The set of separation discs can be changed, which allows you to install additional external and internal disks if necessary.

The outer disk 6 and the inner disk 7 are made of polyurethane, and the diameters of the disks are connected by a ratio of 1: 1.05-1.1, and the diameters of the disk of the inner 7 and the measuring tube of the level gauge 15 are connected by a ratio of 1: 1. The indicated ratios are determined empirically for the average degree of contamination of the inner surface of the pipe and provide a sufficient degree of cleaning of the level gauge with an allowable axial load, necessary for the repairman to overcome the resistance to movement of the cleaning piston down the measuring tube of the level gauge. For a variant of the device for mechanical cleaning of the measuring tube of the tank level gauge, the diameters of the external disk, the inner disk and the diameter of the measuring tube of the level gauge are 200, 210, and 210 mm, respectively. For heavily soiled measuring tubes of the level gauge, external and internal disks of a smaller diameter can be used, followed by replacement with larger disks.

To reduce the resistance to movement of the cleaning piston, the inner disk 7 contains four through holes on the cleaning surface that are evenly spaced around the circumference.

The use of polyurethane, which has elasticity and high wear resistance, increases the service life of the external and internal disks and does not damage the inner surface of the measuring tube of the level gauge.

The treatment piston 5 is rigidly connected by means of a bolt connection to a deflecting unit 3, consisting of a cross-shaped support with guides installed in it by two rollers (not shown in Fig. 1, 2) made of bronze.

The deflecting unit 3 together with the treatment piston 5 is suspended on a cable passed through the rollers of the deflecting unit, which is connected through the hinge 10 to the rod 1, by which the axial load is transmitted to the treatment piston.

The rod 1, which is a collapsible design and consisting of separate sections, is pivotally connected to the deflecting unit 3 and is configured to change the total length. Each section of the rod is made of aluminum pipe, at one end of which a sleeve 8 with an external thread is installed, and at the other end, a sleeve 9 with an internal thread is installed. Threaded bushings are mounted on the ends of the aluminum pipe by means of seaming.

Device operation

To quickly eliminate paraffin deposits, which cause fluctuations in the readings of radar level gauges installed on the tank, the frame 2 together with the cleaning piston 5 mounted on the winch cable 4 are mounted on the flange of the measuring tube of the level gauge 15. Place the stopper 14 in the measuring tube of the level gauge 15 and screw it onto the clamp bottom 13.

The first section of the rod 1 is screwed onto a hinge 10, which has a threaded element. Using the rod, the treatment piston 5 is lowered into the measuring tube of the level gauge 15. As the cleaning piston is lowered, the extension rod is extended by screwing on the next section.

Upon reaching the bottom of the tank, which is determined using the limiter 14, with the help of a winch 4 through the deflecting unit 3, the treatment piston 5 is lifted. To finish cleaning the inner surface of the measuring tube of the level gauge, several lifting-lowering cycles of the treatment piston must be performed.

For convenience of storage, after lifting the treatment piston, the limiter is disconnected, and the sections of the rod are unscrewed and laid in a pencil case,

Tests of the prototype showed that the device provides the removal of paraffin deposits of the measuring pipe of the level gauge of the vertical steel tank, sufficient for the regular functioning of the radar level gauges.

In the utility model, a simplification of the design is achieved while ensuring convenience and efficiency in operation.

Claims (9)

1. A device for mechanical cleaning of the measuring tube of the tank level gauge, characterized in that it contains a frame with a winch fixed on it, made with the possibility of mounting on the flange of the measuring tube of the level gauge, an opening for the cleaning piston is made in the bottom of the frame, including external, internal and separation disks, fastened with a bolt connection with the upper and lower clamps, a limiter is installed on the lower clamp, while the treatment piston is rigidly connected to the deflecting unit, suspended on a winch cable and pivotally connected to a rod consisting of separate sections and configured to change the total length. 2. The device according to claim 1, characterized in that the rod section is made of aluminum pipe, at one end of which a sleeve with an external thread is installed, and a sleeve with an internal thread is installed at the other end. 3. The device according to p. 1, characterized in that the deflecting unit contains guide rollers made of bronze. 4. The device according to claim 1, characterized in that the treatment piston is made up of at least two external disks and two internal disks. 5. The device according to claim 1, characterized in that the external disk and the internal disk are made of polyurethane, and the disk diameters are connected by a ratio of 1: 1.05-1.1. 6. The device according to p. 1, characterized in that the internal disk contains four through holes on the cleaning surface, located evenly around the circumference of the circle. 7. The device according to claim 1, characterized in that the diameter of the inner disk and the diameter of the measuring tube of the level gauge are connected by a ratio of 1: 1. 8. The device according to claim 1, characterized in that the limiter comprises a sleeve with a female thread. 9. The device according to claim 1, characterized in that a manual drum winch with a rope capacity of 50 m is used as a winch.

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