RU199678U1 - DEVICE FOR INSPECTION AND REPAIR OF PIPELINE VALVES - Google Patents

Abstract

The utility model refers to structures used in the gas industry when performing maintenance and repair of pipeline fittings (hereinafter referred to as TPA) with a nominal diameter of 50 mm (hereinafter referred to as DN 50). The task of the utility model is the possibility of revising and repairing TPA DU 50 without replacing it with a new one. , as well as a decrease in labor intensity when performing these works. The technical result is the ability to disconnect the flanges of the ball valve for revision and repair of the defective injection molding machine DU 50. The problem is solved, and the technical result is achieved by creating a device for the inspection and repair of the injection molding machine DU 50. Device for revision. and repair TPA DU 50 consists of four half-plates with a thickness of 25 to 33 mm, in which holes are drilled for expanding pins with nuts. The half-plates are pulled together by eight tightening pins, thus forming two plates with holes for the grooves of the tap pipes.

Description

The utility model refers to structures used in the gas industry when performing maintenance and repair of pipeline fittings (hereinafter referred to as TPA) with a nominal diameter of 50 mm (hereinafter referred to as DN 50).

During maintenance or inspection of the injection molding machine, gas leaks along the body, stem and seats of the ball valve are often detected. To eliminate the above defects, the ball valve (hereinafter - KSh) is dismantled (cut out) and a new one is mounted using welding.

The disadvantages of this repair method are:

- organization and performance of work with increased danger;

- impossibility of auditing and repairing the KSH by one employee.

Known device for unclamping flanges KSH DU 500 mm when repairing the body-flange seal [1].

The disadvantages of this device are:

- the impossibility of revising the seats, ball valve, due to the small stroke of the valve flange, which is 8 mm;

- the lack of the possibility of simultaneous inspection of both valve saddles with one device;

- the need to use gaskets under the shoes in order to avoid damage to the pipeline;

- the complexity of manufacturing due to the design of the half-couplers.

Also known is a device for disconnecting flanges [2]. It is designed to disconnect flanged pipelines.

The main disadvantage of this device is the complexity of its use due to the absence of a gap between the flanges of the KSh for its installation and subsequent separation of the flanges.

The task of the utility model is the possibility of revising and repairing the TPA DU 50 without replacing it with a new one, as well as reducing the labor intensity when performing these works.

The technical result is the ability to disconnect the flanges of the ball valve for revision and repair of a defective injection molding machine DU 50.

The task is being solved, and the technical result is achieved by creating a device for the inspection and repair of the injection molding machine DU 50.

The claimed device for revision and repair of TPA DU 50 is explained using:

fig. 1 - General view of the device for revision and repair of TPA DU 50;

fig. 2 - method of installing the device on the crane;

fig. 3 is a view of the device with uncompressed nozzles of the ball valve.

The device for revision and repair of TPA DU 50 consists of four half-plates 1, with a thickness of 25 to 33 mm, in which holes 2 are drilled for expanding pins 3 with nuts 4. The half-plates are pulled together by eight tightening pins 5, forming two plates with holes 6 under the grooves of the nozzles 7 of the valve.

The operation of the device for the inspection and repair of the injection molding machine DU 50 is shown in Fig. 4 and is carried out as follows.

The assembly of the device is carried out directly on the body of the ball valve DU 50. For convenient dismantling, the nuts 10 of the studs 11 for fastening the nozzles 7 of the valve are unscrewed. The half-plates 1 are installed in the grooves of the nozzles 7 of the crane and pulled together with eight pins 5, forming two plates installed before and after the crane. The plates are installed together in such a way that the holes 2 for the expanding pins 3 are coaxial. Two expanding pins 3 with nuts 4 are installed in the holes between the plates. At the same time, rotating the nuts 4 on both pins 3, the valve pipes 7 are released, resulting in access to the sealing ring 8 and the seats 9.

After the repair is completed, the device is dismantled in the reverse order, the nozzles 7 of the ball valve are pulled together with studs 11 using nuts 10.

When using this device, the thickness of the pipeline wall and the conditions for the location of each openable valve are taken into account in order to minimize the load on the welded seams with a longitudinal change in the length of the section on which repair work is carried out.

The essential distinguishing features of the claimed device are:

- the device is collapsible, which makes it easy to adapt it to various types of injection molding machines DU 50;

- the introduction of this device allows us to audit and repair a defective injection molding machine DU 50 without cutting it out and replacing it with a new one.

The claimed essential distinctive features are unknown to us from patent and scientific and technical information and, accordingly, are “New”.

Working drawings, strength calculations were made for the claimed device, and a prototype was made, which was successfully tested at the Sheksninsky LPUMG of Gazprom transgaz Ukhta. In this regard, the device declared by us meets the criterion "Industrial applicability".

List of sources:

1. RF patent No. 183269, IPC F16K 43/00 (2006.01).

2. Mechanical flange spreader RFM-14 Polidek [Electronic resource]. Access mode: https://polidek.ru/razgonshchik-flancev-mehanicheskiy-rfm-14-polidek (Date of access: 07.11.2019).

Claims (1)

A device for repairing pipeline fittings in the form of a ball valve, characterized in that it consists of four half-plates and eight tie rods, by means of which the half-plates are pulled together to form two plates with holes for the grooves of the ball valve branch pipes, while the half-plates have drilled holes, in which are located expanding pins with nuts.

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