RU75847U1 - DRAINAGE TROLLEY - Google Patents

Abstract

A catchment trolley for draining hot water from pipelines during repair, the tank of which has thermal insulation and a water level gauge in the tank, and the trolley has a tow hitch.

Description

The proposed utility model relates to devices for pouring, dispensing, or transfusing liquids other than fuel or lubricants, and more particularly, to containers for collecting predominantly hot water when it is drained from pipelines.

The need to develop the claimed device is caused by the requirements of legislation aimed at protecting the environment.

Among the many factors that negatively affect the environment, ordinary, in particular hot water, has a significant place, the destructive effect of which, up to irreversible, occurs especially in the permafrost zone. The urgency of this problem increased after the discovery and start of development of gas fields in the northern latitudes, which entailed the intensive construction of gas pipelines with pumping, gas control stations, heat satellites, etc., the normal operation of which is possible only in the presence of hot water.

At the same time, it is known that the service life of steel pipes with hot water is usually five years, and the facilities they serve are decades.

Therefore, during the operation of the complex as a whole, its pipes must be repaired and replaced, respectively, draining water from them.

Since random drainage of water to the ground is strictly prohibited, there are binding rules, see, for example, SNIP 41-02-2003, according to which a drainage system should be provided. However, the construction of sewer networks greatly increases the cost of building gas pipelines, and in some cases impedes their construction.

Nevertheless, sewer networks can be dispensed with, since it is indicated in paragraph 10.23 of SNIP 41-02-2003 that drainage (discharge) of water from pipelines is possible into waste wells or concrete pits with its subsequent discharge into the sewer by mobile pumps.

The experience of well-known gas pipelines has shown that the role of a discharge well can equally well be played by a mobile tank (trolley with a tank), which, after filling, will be transported and drained into the sewer, thereby significantly reducing the cost of constructing a gas pipeline.

The technique is widely known for the diverse design of the trolleys with and without capacity.

The former are widely used in warehousing (see, for example, the brochure "Technique for a warehouse", Moscow, contact phone number 545-31-74), and mainly have a battery electric drive, hydraulic lift, other small-scale mechanization and are not included in the materials of this application are considered.

Carts with a capacity are mainly used in the meat and dairy industry (see, for example, products advertised by ANTES, Korolev, Moscow Region, Boldyreva St., 1).

Based on a set of similar essential features, a trolley can be selected for the prototype of the claimed device according to the catalog "Equipment for the milk processing industry" of the AGROKOM commercial and industrial company, page 1.

The well-known trolley has a vat (capacity) of 200 liters, placed on wheels, made of stainless steel, and may have a removable lid. On one side the trolley is equipped with a handrail.

In the presented design, the known trolley is unsuitable for servicing gas pipelines.

The claimed utility model was tasked to ensure the discharge of hot water from the pipeline into a closed volume, excluding the ingress of drained water to open ground.

The problem is solved by the fact that the proposed drainage truck for draining hot water from the repaired pipeline, containing a container equipped with a lid.

New in the proposed device is that the lid has a lock from self-opening, and the tank is insulated and equipped with three nozzles, respectively, drain, fill and overflow, of which at least one drain has a manual tap, a means of monitoring the level of “filled into the water tank , a hose with a funnel, alternatively interacting with the first and second nozzles, and a towbar towing device.

The technical result of the claimed device is to reduce the cost of constructing a gas pipeline, since there is a need to build a network of waste wells, the location of which is impossible to know in advance, and to increase the convenience of its operation, since the use of a limited number of mobile carts eliminates the need to have additional energy equipment in the form of pumping pumps for emptying waste wells and in general within their technical capabilities provides environmental protection.

Figure 1 schematically shows the claimed device, side view; figure 2 is the same, a top view.

The declared catchment trolley is a container 1 (a vat with a volume of about 200 liters with a cover 2), mounted on wheels 3, which can be mounted directly on both the container 1 and on a separate frame on which the container is installed (due to the insignificance of the frame in the drawings not shown).

The cover 2 of the container 1 in the working position through the well-known sealing gasket (installed around the perimeter of the cover) is permanently fixed relative to the walls of the container 1, for example, by bolts with nuts 4. The front wheels 3 have a horizontal common axis rotatably mounted around a vertical axis (not shown) on the trolley . The towing rod 5 pivotally connected to the axis of the wheels has a well-known towing device 6 for towing a trolley behind a corresponding self-propelled vehicle.

Both the walls of the tank 1 and its lid 2 have thermal insulation, and the tank itself is equipped with a level gauge 5, for example, a well-known float, which allows you to control the degree of filling of the tank 1 with water. The tank 1 has nozzles: drain 7, filler 8 and overflow 9, as well as a hose 10 with a funnel 11 laid on the cover 2, while at least one drain nozzle 7 has a manually operated shut-off valve 12, and on the filler 8 and overflow 9 the nozzles are fitted with easily removable plugs.

The device operates as follows.

To fill the water in the tank, the valve 12 of the drain pipe 7 is closed, the hose 10 is attached with a free end to the water inlet pipe 8, and the end with a funnel fixed to it is installed under the pipeline valve from which the water is drained.

The degree of filling of the tank 1 is controlled by the well-known float level gauge 5. If, due to an oversight of the worker, the tank overflows, the excess water will merge through the overflow pipe 8.

After filling the tank, the carriage is towed behind the coupling device by a suitable self-propelled vehicle to the place where the water is drained, where the hose 10 is fixed to the drain pipe 7 (its crane 12), the crane 12 opens and the water drains by gravity from the tank 1. Fixing the cover 2 through the gasket against the walls containers and the presence of easily removable plugs on the filler and overflow nozzles prevents the splashing of water from the chatter when towing a trolley.

Obviously, in the general case, the installation of shut-off valves on the filler and overflow nozzles is not necessary, and if it occurs during operation, then there are no obstacles to this.

The thermal insulation on the walls and the lid of the tank does not allow freezing in the winter during the towing of the trolley to the place of discharge.

Claims (1)

A catchment trolley for draining hot water from a pipeline being repaired, comprising a container provided with a cover, characterized in that the cover is sealed through the gasket on the container from self-opening, the container with a cover are heat-insulated, three pipes, respectively, drain, fill and overflow, of which at least the drain is equipped with a manual shut-off valve, a means of monitoring the water level in the tank, a hose with a funnel, alternatively interacting with the first and second nozzles, and a tow hitch trolley system has focused.