RU2385443C1 - Mobile flushing device for heating and water supply systems - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: device includes water source through flexible delivery hose, return pipeline and tangential tapping connected to the tank intended for water making-up of the system and for preparation of chemical reagent, which includes access hole charging the chemical reagent, inverse cone with mesh, which is installed inside the tank, cone for protecting suction pipeline and pump against deposits. Tank has cone-shaped bottom for storage and discharge of deposits, which is connected to flexible delivery hose for accumulation of deposits, as well as level metre with level indicator, which is connected to the tank and intended for level control. Tank is connected to circulation system including main-line pump, circulation pump, suction, delivery and return pipelines, as well as flushing solution circulation bypass. Main-line pump is intended for filling the flushed system with source water and for supplying water chemical solution to flush the system, and circulation pump performs flushing as per the specified hydraulic mode; at that, the tank outlet through suction pipeline, mud trap, the branch pipe of which is connected to flexible delivery hose for accumulation of deposits, is connected at the suction pipeline to delivery pump whereto electric control panel is connected. Main-line pump through control valve, check valve and delivery pipeline is connected to pressure gauge and to the first reverse inlet intended for changing the flow direction and made in the form of a ring composed of tubes connected to each other with ball valves; at that, the first reverse outlet is connected to pressure gauge and control nut diopter, which is connected through bypass to vertical inlet of mud trap and suction branch pipe, which connected through circulation pump to electric control panel is connected to delivery branch pipe with control valve, connected through flexible delivery hose to heat source inlet, to which electric control panel is connected; at that, heat source outlet is connected to contact thermometre and through flexible delivery hose to the inlet of control valve and check valve, which together with delivery pipeline is connected though flexible delivery hose to pressure gauge and compressor outlet which is connected to electric panel. The second reverse outlet is connected through flexible delivery hose to return pipeline of heat supply system, and the third reverse outlet is connected through flexible delivery hose to supply pipeline of heat supply system; at that, all the pipelines and components of the device are connected to each other with ball valves. Device is made with possibility of being installed on transport facility.

EFFECT: device allows sufficient increasing the flushing efficiency.

1 dwg

Description

The invention relates to energy, can be used in the maintenance and repair of heating systems of buildings and structures, hot and cold water supply systems, heat exchangers and boilers.

The main objective of the invention is the cleaning of deposits on the inner surfaces of pipelines, heat exchangers, boilers.

The deposits have a complex composition and have low thermal conductivity. If measures are not taken to clean and restore the systems (restoration of the original internal section of pipelines, heat exchangers), the heating system becomes completely clogged, which leads to the cessation of the circulation of the heating medium inside the system. As a result, there is a need for major repairs, or replacement of heating systems, heat exchangers, boilers. Currently, a complete replacement of heating systems, heat exchangers is an expensive and lengthy procedure. Permanent scheduled cleaning of systems with special plants using chemical reagents is required.

A mobile flushing device allows washing pipes of the heating system of the heat exchangers of the boilers without dismantling and incorporating it into the circulation circuit of the installation.

The authors were faced with the task of creating a washing mobile device for cleaning water heating systems, heat exchangers and boilers from deposits on internal surfaces using new design solutions and new modern environmentally friendly chemicals that do not destroy the structural material of the washed systems.

The closest analogue to the claimed and technical solution is the invention Ru 22758 U1 B08B 9/02, which describes "Mobile installation for flushing heating and water supply systems."

A device for flushing heating and water supply systems, consisting of a compressor with a receiver for a capacitive boiler with a diesel burner, a group of high and low pressure pumps, a centrifugal vortex cleaner (CVO), a foam generator, a mud trap, a vacuum pump, a reversing unit, an inlet connecting head and an output connecting head, kinetic pulse wave shaper (KVI), air-water mixer (VVS), air pipe, return pipe, feed pipe, vacuum pipe gadfly, foam-air mixture pipeline, KIV pipeline, hot air pipeline.

However, the known device has disadvantages in design:

- the installation is very bulky, saturated with a large number of devices and nodes;

- its transportation in a vehicle is very problematic;

- high energy consumption;

- traditional acids are used as the main washing reagents, which aggressively affect the structural material of the washed systems; neutralization of chemical reagents is required.

The aim of the claimed invention is to expand the functionality, by increasing the efficiency of the design of the device for washing.

The drawing shows a diagram of a mobile device for flushing heating systems, water supply, heat exchangers and boilers.

The goal is achieved by the fact that:

a water source through a flexible pressure hose, a return pipe and a tangential outlet is connected to a tank designed to feed the system with water and to prepare a chemical reagent, including a hatch for filling the chemical reagent, a return cone with a grid installed inside the tank for dissolving the chemical reagent, near a protective cone is installed on the bottom of the tank to protect it from deposits and to prevent deposits from entering the pumps, the tank having a conical bottom for accumulating and removing deposits, which is connected to a flexible pressure head sleeve to discharge deposits, as well as a level gauge connected to the tank with a level indicator designed to control the level, the tank is connected to a circulation system including a network pump, a circulation pump, a suction, discharge and return pipes, as well as a bypass, for circulating the flushing solution, and the network pump is designed to fill the flushing system with source water and supply an aqueous chemical solution for flushing, and the circulation pump flushes according to the established hydraulic mode, while leaving the tank through the suction pipe, a dirt trap, the outlet of which is connected to a flexible pressure hose to discharge washed deposits, while the dirt trap on the suction pipe is connected to a mains pump to which an electric control panel is connected, and the mains pump through an adjustment tap , the non-return valve and the discharge pipe are connected to a manometer and the first inlet of the reverse, designed to change the direction of flow and made in the form of a ring of pipes, with interconnected by ball valves, the first reverse output being connected to a manometer and a diopter with a control nut, which is connected via a bypass to the vertical inlet of the dirt collector and the suction pipe, which is connected through a circulation pump connected to an electric control panel to a discharge pipe with an adjustment valve through a flexible pressure hose, connected to the input of the heat source, to which the electric control panel is connected, while the output from the heat source is connected to the contact thermometer and through a flexible pressure hose to the inlet of the control valve and check valve, which are simultaneously connected to the discharge pipe through a flexible pressure hose with a pressure gauge and the output of the compressor, which is connected to the electrical panel, while the second reverse output through the flexible pressure sleeve is connected to the return pipe, and the third outlet of the reverse through a flexible pressure hose is connected to the supply pipe, and all pipelines and components of the device are interconnected by ball valves.

The flushing device includes:

1 - tank, 2 - hatch, 3 - level indicator, 4 - level gauge, 5 - protective cone, 6 - return cone, 7 - grid, 8 - tangential tap, 9 - tank tap, 10 - reverse, 11 - network pump, 12 - circulation pump, 13 - dirt trap, 14 - dirt trap outlet, 15 - diopter screw control, 16 - check valve, 17 - suction pipe, 18 - discharge pipe, 19 - return pipe, 20 - bypass, 21 - suction pipe of the circulation pump , 22 - discharge pipe of the circulation pump, 23 - electric control panel, 24 - heat source, 25 - 27 pressure gauges, 28 - computer essor, 29 - control valve, 30-44 - ball valves, 45 - contact thermometer, 46-53 - flexible pressure hoses, 54 - supply pipe of the heating system, 55 - return pipe of the heating system, 56 - water source, first reverse input, first output reverse, second reverse output, third reverse output.

The flushing device operates as follows:

The first circulation circuit (open mode). From the water source 56, water enters the flexible pressure hose 48, the open ball valve 35, then enters the return pipe 19 through the open ball valve 34, the tangential branch 8 tank 1 is filled with water. The hatch 2 in this position is open, the filling of the tank 1 is controlled by a level indicator 3 in the level gauge 4, after filling the tank 1 with water, the ball valve 35 closes, then the ball valve 37 gradually opens on the installation suction pipe 17, through the dirt trap 13, then through the suction pipe 17 to the network pump 11. On the electric control panel 23, press the "start" button, the pump 11 is turned on, then on the suction pipe 17 we gradually open the ball valve 40, and water enters the network pump, then after the pump 11 the water is falls into the discharge pipe 18, open the control valve 29, through the non-return valve 16, then to the reverse 10, through the first inlet, open the ball valve 30. The second output of the reverse 10, through the flexible pressure sleeve 52, into the return pipe 55 of the heating system, then through the flushed an object supplying a pipeline to the heating network 54, through a flexible pressure hose 53, to the third outlet of the reverse 10, through the open ball valve 32, through the first outlet of the reverse 10, with the ball valve 35 closed, through the open ball valve 34, the return pipe 19, through the tangential branch 8 ode falls into the tank 1. The water comes out of the tangential outlet 8 at a high speed along the walls of the tank 1 and spirals. This effect can be used to dissolve bulk chemicals poured in the center of the cone 6 in the tank 1 on the grid 7.

Water flows through the net to the bottom of the tank 1. A protective cone 5 is installed above the suction pipe 17 to protect the suction pipe 17 from washed large and small particles of deposits (calcium, magnesium, glandular, etc.). In order to prevent dirt from entering the suction pipe 17 and then into the pumps 11 and 12, the discharge of water from the tank 1 is periodically checked: the ball valve 38 opens, through the outlet of the tank 9 and the flexible pressure sleeve 46, the discharge. Water is fed to the flushed system by periodically opening the ball valve 35, with the pump 11 turned off and the ball valve 32 closed.

An automatic air purifier (not shown in the diagram) is used to discharge air from the flushed system. In the case when the automatic air vent does not have time to discharge the air, it displaces the air through the supply pipe of the heat network 54 through the flexible pressure hose 53, through the third outlet of the reverse, the open ball valve 32 on the reverse 10, water enters the return pipe 19, through an open ball valve 34, a tangential branch 8, into the tank 1. At the same time, water is recharged with an open ball valve 35.

When filling the flushed system, the level in the tank 1, the level 3 indicator should be in the upper part of the level gauge 4, the level is regulated by opening and closing the ball valve 35.

Filling the system with water is carried out by the network pump 11 to the permitted pressure specifically for each system. We wash the heating system due to water circulation by the network pump 11 and reverse operation 10, washing the primary loose layer of deposits located on the walls of pipelines 54, 55 and heating devices (not shown in the diagram).

The operating mode of the reverse 10 is changed, but we leave tank 1 in the circulation system, in atmospheric mode on the reverse 10 we close the ball valves 30 and 32, open the ball valves 31 and 33. We set the temporary operation in this position for 3-5 minutes (cycle), then we change the direction of water movement on reverse 10, for this we close the ball valves 31 and 33, open the ball valves 30 and 32, in this position we also circulate for 3-5 minutes, etc.

Accumulated deposits from flushing the system are discharged into the sewer from tank 1, through branch 9, ball valve 38, pressure flexible sleeve 46, and also from the dirt collector 13, through branch 14, ball valve 39 and flexible pressure sleeve 47. We make the system water by ball valve opening 35.

On the device’s discharge pipe 18 we close the control valve 29. Water (water chemical solution) will move through the open lower outlet of the discharge pipe 18, flexible pressure hose 51, to the heat source 24, turn on the heat source by pressing the “start” button on the electric control panel 23 .Water passing through a heat source is heated to a predetermined temperature. Heated water flows from the heat source through a flexible pressure hose 50 to the upper inlet of the discharge pipe 18. After the necessary temperature is established in the entire flushed system, a chemical reagent is added (filled, filled) to the tank 1. The chemical reagent is loaded through an open hatch 2 onto the grid 7 of the cone 6 (in the case of a liquid reagent, it is poured directly into the tank 1), the heated water coming in a spiral from the tangential branch 8 dissolves the chemical reagent. The amount and type of added chemical reagent is calculated from:

- sediment composition (rapid analysis);

- the ratio of sediment content in the flushed system to the total volume of the system.

The temperature of the wash solution is controlled by a contact thermometer 45.

After a complete circulation cycle with the added chemical in the system being washed, we perform a reversal (changing the direction of movement of the washing solution), for this we close the ball valves 30 and 32 and open the ball valves 31 and 33. We set the time mode in this position for 3-5 minutes ( cycle), then we change the direction of water movement on reverse 10, for this we close the ball valves 31 and 33, open the ball valves 30 and 32, in this position we also circulate for 3-5 minutes, etc.

Next, smoothly cover the ball valve 34 on the return pipe 19, dump the residual air from the flushed system. After that we add the necessary volume of make-up water using a ball valve 35. The heat source continues to work to maintain the required temperature of the washing solution.

Second circulation circuit (closed mode).

From the "open mode" of the device, go to the "closed mode". We close the ball valve 34 on the return pipe 19 and close the ball valve 37 on the suction pipe 17, open the ball valve 36 on the bypass 20, gradually close the ball valve on the suction pipe 17, press the “stop” button on the electrical control panel 23 of the network pump 11, withdraw the network pump 11 is out of operation, then on the electric control panel 23 we press the “start” button and start the circulation pump 12, smoothly open the ball valve 41 on the suction pipe 21 of the circulation pump 12 and into the discharge pipe plumbing 18 the device is in "closed mode". Further up to the open control valve 29, the non-return valve 16, through the open ball valve 30 on the reverse 10, the second outlet of the reverse, through the flexible pressure hose 52 to the return pipe 55 of the heating network, then through the flushed object, the supply pipe of the heating network 54, through the flexible pressure head sleeve 53 to 3 exit of the reverse 10, through the open ball valve 32, through the first exit of the reverse 10 with the closed ball valve 35 on the bypass 20, through the diopter nut control 15, the dirt trap 13, the discharge of the dirt trap 14, designed for discharge into the sewer washed x deposits, through the ball valve 39 and the pressure flexible hose 47.

We change the operating mode of the reverse 10, close the ball valves 30 and 32, open the ball valves 31 and 33. Set the temporary operating mode in this position for 3-5 minutes (cycle), then change the direction of water movement on the reverse 10, for this we close the ball valves 31 and 33, open the ball valves 30 and 32, in this position also circulate for 3-5 minutes, etc. This cycle is repeated many times throughout the wash.

In the closed mode of operation of the device, water is fed by periodically opening the ball valve 35.

The quality control of the circulating chemical solution (water) is carried out visually using a control diopter nut 15.

We periodically discharge sediment from the tank 1 and dirt trap 13 (described above).

The quality control of the circulating water is evaluated visually using a control diopter 15, and an express analysis of the washing solution is periodically performed. After the chemical agent completely ceases, the heating of the washing solution stops, by pressing the stop button on the electric control panel 23 we turn off the heat source 24. Close the ball valve 42 at the lower outlet of the discharge pipe 18 and close the ball valve 43 at the upper entrance to the discharge pipe 18 and open the control valve 29 on the discharge pipe 18 of the installation.

After flushing, we prepare the flushing device and the flushed system to discharge the spent chemical reagent.

We gradually block the ball valves 41 on the circulation pump 12 and on the electric control panel of the circulation pump 23, press the stop button and take the circulation pump 12 out of operation. On the reverse 10, close the ball valves 30, 32, 33, the ball valve 31 is open.

We drain from the washed system the spent washing solution of the chemical reagent under its static pressure from the system through the dirt collector 13, branch 14, open ball valve 39, flexible discharge hose 47 discharge. We reset from the system 1 / 3-1 / 4 of the volume of the system. Close the ball valve 39.

For faster discharge of the spent reagent from the heating system, we turn on the air compressor 28, compressed air from the compressor receiver enters through a flexible pressure hose 49, through an open ball valve 44 into a discharge pipe 18. On the reverse 10, leave the ball valve 33 open and the ball valves closed 30, 31, 32, the air at the lower outlet of the reverse 10, enters through a flexible pressure hose 53, into the supply pipe 54 of the heating network.

We raise the pressure in the flushed network due to compressed air to the permitted pressure for this network (system).

The air is under pressure in the upper part of the system, presses on the remaining volume of water, using this, we discharge through the return pipe of the heat network 55 and the flexible pressure hose 52, through the second outlet of the reverse 10, the open ball valve of the reverse 31, through the return pipe 19, at open the ball valve 36 on the bypass 20, through the dirt trap 13, the discharge of the dirt trap 14 open the ball valve 39, through the flexible pressure sleeve 47 - discharge into the sewer. As the water decreases from the system, periodically close the ball valve 39 and maintain the pressure in a given mode.

This method of removing water (solution, coolant) from the system is much more effective than the method of natural discharge, discharge under pressure is faster, existing stagnant zones are blown where residues of washed deposits can accumulate.

The remainder of the reagent solution is discharged into the sewer from the tank 1 through the outlet 9, ball valve 38, a flexible discharge hose 46 discharge.

The result of increasing the efficiency of the washing installation for washing heating systems, the heat exchanger of the apparatus is achieved by the fact that the design of the installation incorporates new technical solutions that maximize the quality of washing.

- improved hydrodynamic performance of the equipment;

- the volume of flushed systems has increased several times;

- increased speed of washing chemical reagent;

- the number of washing modes has increased;

- the design of the installation is made of corrosion-resistant materials;

- the installation can be transported on small vehicles, it is completely disassembled and assembled, the installation process takes a minimum of time, it can work both in a car (stationary) and can be located directly at the place of washing;

- quickly connects to the flushing object through the use of quick disconnect couplings (BRS) and flexible pressure hoses.

- Only environmentally friendly chemicals are used that do not affect the materials of heating systems (heat exchangers, boilers) and do not require neutralization after flushing the systems;

- the washing process is carried out both in atmospheric mode (open) and in (closed) mode, without breaking the flow - through the bypass;

- a small-sized heat source is installed, the power of which can be regulated depending on the volume of the heated chemical reagent, the heater can be used to check the system for the effect of heat transfer after washing.

Thus, the proposed mobile device for flushing heating systems, heat exchangers, boilers has multiple cumulative effects on deposits:

- hydrodynamic;

- hydropneumatic;

- hydrochemical.

The combination of several types of effects can significantly increase the washing efficiency.

Claims (1)

A mobile device for flushing heating systems, heat exchangers and boilers, comprising: a water source through a flexible pressure hose, a return pipe and a tangential outlet connected to a tank designed to feed the system with water and to prepare a chemical reagent, including a hatch for filling the chemical reagent , a return cone with a mesh installed inside the tank, a cone to protect the suction pipe and pump from deposits, and the tank has a conical bottom for accumulation and removal of deposits, which connected to a flexible pressure head hose to discharge deposits, as well as a level gauge connected to the tank with a level indicator designed to control the level, the tank is connected to a circulation system including a network pump, a circulation pump, a suction, discharge and return pipes, as well as a bypass for circulating the flushing solution, and the network pump is designed to fill the flushed system with source water and to supply an aqueous chemical solution for flushing, and the circulation pump flushes by mouth hydraulic mode, while leaving the tank through the suction pipe, a dirt trap, the outlet of which is connected to a flexible pressure hose to discharge washed deposits, while the dirt trap on the suction pipe is connected to a mains pump, to which an electric control panel is connected, and the mains pump through an adjustment a tap, a non-return valve and a discharge pipe are connected to a pressure gauge and the first inlet of the reverse, designed to change the direction of flow and made in the form of a ring and from pipes interconnected by ball valves, the first reverse outlet being connected to a manometer and a diopter with a check nut, which is connected via a bypass to the vertical inlet of the dirt collector and the suction pipe, which is connected to the discharge pipe via a circulation pump connected to an electric control panel through a flexible pressure hose, connected to the input of a heat source to which an electric control panel is connected, with the control valve, while the output from the heat source is connected to a thermometer ohm contact and through a flexible pressure hose to the input of the control valve and check valve, which are simultaneously connected to the discharge pipe through a flexible pressure hose with a pressure gauge and the output of the compressor, which is connected to the electrical panel, while the second output of the reverse through the flexible pressure sleeve is connected to the return pipe heating system, and the third reverse output through a flexible pressure hose is connected to the supply pipe of the heating system, and all pipelines and device components are interconnected ApoB cranes, the device is adapted to be mounted on a vehicle.

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