UA71472U - Mobile device for washing heating and water supply systems - Google Patents

Abstract

A mobile device for washing heating and water supply systems has a vessel with cover and device for control of liquid level connected to control cabinet, compressor and pump-circulation system that comprises a feeding pump, circulation pump, system of dirt removal, heat source. The vessel and the compressor are equipped with bypass valves. As a device for control of liquid level one uses a block of level sensors electrodes of which are fixed in the vessel, as feeding pump one uses a pump with automatic pressure control.

Description

The useful model belongs to the field of thermal energy and can be used for washing and cleaning the internal surfaces of the following systems and elements: indoor central water heating systems; clogged and silted radiators of central heating, risers and piping; autonomous heat supply systems; internal surfaces of heat-generating and heat-exchange equipment from scale and solid deposits.

It is well known that the formation of scale on heat exchange equipment is the main reason for the decrease in the efficiency of its operation. A layer of scale reduces heat transfer, which leads to greater consumption of thermal energy. In addition, due to the formation of scale on the walls, the hydraulic resistance of the system elements increases, the flow of the heat carrier deteriorates.

The main requirement for the heating system is reliability and durability. But over time, the system becomes clogged, deposits form in it, scale builds up. The water used, even if it is specially prepared, contains mechanical impurities and scale-forming salts (sulfates, carbonates, silicates, corrosion products, iron oxides, etc.), which slowly but constantly build up on the walls inside the device, increasing the resistance to the passage of water and reduce the efficiency of heat transfer. In heating systems, this is especially dangerous, as scale deposits lead to a significant overspending of thermal energy. For example, if the thickness of deposits is 1 mm, then fuel consumption increases by 14 95. As practice shows, after 10 years of operation, all pipelines of heating systems are clogged with deposits by more than 50 95. As a result, there is a need for major repairs or replacement of heating systems, heat exchangers devices, boilers, which is an expensive and lengthy procedure.

A well-known mobile device for flushing heating and water supply systems, which allows you to flush the pipes of the system without disassembly and to include it in the circulation circuit of the installation, described in the patent of the Russian Federation Mo 2385443 |MPK P2809/00, C2303/04, publ. 27.03.20101, which is the closest among the known ones to the claimed technical solution, in terms of technical essence and the achieved result. It contains a container with a lid and a liquid level control device connected to a control cabinet, a compressor and a pump-circulation system that includes a feed pump, a circulation pump, a mud removal system, a heat source, and ball valves are installed between the components of the device. The specified device has a container with a lid

The tank for filling the chemical reagent includes a return cone with a mesh, a cone to protect the suction pipeline and the pump from deposits, installed inside the container. The tank has a conical bottom for accumulating and draining sediments, which is connected to a flexible pressure hose for dumping sediments, and a level gauge with a level indicator is also connected to the tank.

The feed pump is designed to fill the system being washed with primary water and supply an aqueous chemical solution for washing, and the circulation pump performs washing according to the set hydraulic mode. In the mud removal system, a mud drainer with a drain is installed, a heater is used as a heat source and the temperature is monitored with a thermometer.

However, the known device uses an open container, which allows washing only small objects, and has a low quality of washing, since deposits softened by a chemical reaction may remain in the system being washed, and sludge residues from "dead zones" may not be completely removed " heating system or heat exchange equipment that is flushed.

The problem to be solved by the proposed useful model is to improve the quality of flushing of heating and water supply systems due to the expansion of functionality and intensification of the flushing process.

The task is solved by the fact that in a mobile device for washing heating and water supply systems, which contains a container with a lid and a liquid level control device, connected to a control cabinet, a compressor and a pump-circulation system, which includes a feed pump, a circulation pump, a system mud removal, a heat source, and ball valves are installed between the components of the device, according to the utility model, the tank and compressor are equipped with bypass valves, as a liquid level control device, a level filling sensor unit is used, the electrodes of which are fixed inside the tank, as a feed pump, a pump with automatic regulation is used pressure, the mud removal system includes a separator and a mud trap, a thermal block with electronic control is used as a heat source, and additionally contains a hydraulic compensator and a blow-off valve. At the same time, the circulation pump contains a system of automatic control of the circulation speed of the chemical solution, and the device is made of separate modules with the possibility of installation on a vehicle.

The technical essence of the claimed useful model is explained by the functional scheme of the device for flushing heating and water supply systems, which shows: 1 - capacity; 2 - container cover; C - unit of filling level sensors; 4 - control cabinet; 5 - compressor; 6 - feed pump; 7 - circulation pump; 8 - separator; 9 - air outlet of the separator; 10 - ball valve of the separator sludge outlet; 11 - mud man; 12 - ball valve for removing mud; 13 - thermoblock with electronic control; 14 - hydraulic compensator; 15 - blow-off valve; 16 - pressure sensor; 17, 18 - bypass valves; 19, 20, 21 - check valves; 22-31 - ball valves; 32-36 - manometers.

The claimed mobile device for washing heating and water supply systems works as follows.

First, a detailed analysis of the condition of the entire system intended for flushing, such as the heating system, is carried out, starting with the project documentation, the terms of commissioning and the condition of the system at the time of repair. To determine the degree of wear of the pipe material and the nature of deposits, a control element is cut out of the system. Then, according to the nature of the scale, the composition of chemical reagents is selected, and the team goes to the work site.

The proposed device is connected to the object being washed through the inlets with ball valves 30 and 31. The inlet of the system supply with cold water is connected from the side of the ball valve 22. The pressure adjustment in the hydraulic compensator 14 is carried out in accordance with the technical data of the circuit being washed, for which it is possible use compressor 5. The pressure in the air chamber of hydraulic compensator 14 should not exceed 75 95 and be below 70 95 of the set pressure. After that, close the ball valves 10, 12, 23, 24, 26, 29, open the ball valves 22, 25, 27, 28, 30, 31, set the necessary pressure in the system on the control cabinet 4 and press the button "Filling the system - Start" . Bypass valve 17 receives the opening command and opens. Container 1 begins to fill, reaching the upper limit "electrode 4" (not shown in the drawing), which is monitored by the level 3 level sensor unit placed on container 1, the bypass valve 17 closes. At the same time, by pressing the "Stop" button at any time, you can stop filling the container and stop the process completely. After closing the bypass valve 17, the feed pump b automatically receives the "Start" command to fill the system with water when the required pressure is reached. Level in container 1

Zo drops to the middle level of "electrode 3" (not shown in the drawing) and the bypass valve 17 opens again to fill the tank with water. By-pass valve 17 will close after reaching the upper limit of "electrode 4". This operation will continue until the system is completely filled and the pressure set on the control cabinet 4 is reached.

After reaching the set pressure, the control cabinet 4 issues the "Stop" command to the feed pump 6, the container 1 is filled with water to the upper limit of "electrode 4", the bypass valve 17 will close. After the program "Filling the system" is finished, you need to press the "Stop" button.

To eliminate clots of mud, silty deposits and loose rust inside the system, the method of cleaning with a water-air pulsating mixture is used. The washing effect is achieved by using a mixture of air and water in the appropriate proportion. Namely: simultaneously with the supply of cold water when filling the system, compressed air is periodically supplied in pulses from the compressor 5 through the bypass valve 18. The time of operation of the air supply program takes place according to the program installed on the control cabinet 4, according to the technological map. Waste water, together with the washed sludge, is dumped into the sewer.

Then a system test is carried out by pressing the "System test - Start" button: circulation pump 7 receives the "Start" command from its own automatic control system and water begins to circulate through the filled system within 30 minutes. During this action, air and pieces of sludge are removed from the system. Feed pump 6 is currently in standby mode and, if necessary, will automatically maintain the pressure in the system. The intake of water to maintain the set pressure will come from tank 1. If the pressure in the system drops below the set value, the control cabinet 4 will automatically start the program "Filling the system". For this action, ball valve 22 must be open, and ball valve 23 must be closed. After the completion of the "System Test" program, the control cabinet 4 will automatically stop the pump 6, after which it is necessary to press the "Stop" button opposite the corresponding "System Test" action and drain the liquid from the tank to the middle level of "Electrode 3" manually using ball valves 22 and 24 installed on tank 1.

After carrying out all the preparatory actions, it is necessary to introduce a chemical reagent into the system to obtain a chemical washing solution in the future. The chemical flushing solution, reacting with corrosive material, scale and other deposits, can cause foaming of the liquid, small water hammers on the system, release of carbon dioxide, etc. Before starting the operation, the permissible value is set on the blow-off valve 15, which, in the event of an increase in pressure beyond the permissible values, will provide an emergency reset.

Close the ball valve 22 and open the ball valve 23. This action will make it possible to ring the system. Pour the required amount of reagents into container 1 based on the volume of water contained in the system, bringing to the required 10-1595 solution in the system. Then the button "Mixing of chemical reagents - Start" is pressed: the bypass valve 17 opens, the control cabinet 4 gives the "Start" command to the feed pump 6 and water from the system begins to pour into container 1. When filling container 1 to the upper level of "electrode 4", the bypass valve 17 closes, and pump 6 continues to fill the system with a chemical washing solution to the set pressure. The program runs for 10 minutes.

If the total amount of liquid with the added chemical washing solution will exceed the permissible value according to the label applied to the container, it is necessary to use ball valves 10 or 12 to drain the excess water to the required permissible value.

This operation is performed once, for the entire washing process before its start.

The duration of chemical washing is determined by measuring the pH level and is carried out manually using a pH meter or litmus probes.

The liquid is taken without stopping the washing process with the help of ball valves 10 or 12, installed respectively on the separator 8 and mud 11. If it is necessary to add fresh reagents during the washing, the process of working out the program "Mixing of acids" is repeated. After finishing the mixing of acids, press the "Stop" button opposite the corresponding action.

After filling the system with a chemical flushing solution, close the ball valve 23 and open the ball valve 22 and start the "System Flushing" program: the control cabinet 4 gives the command "Start" to the circulation pump 7. The chemical flushing solution begins to circulate through the system, entering into a reaction with the corrosive material , scale and other deposits.

At the beginning of the circulation, the chemical washing solution passes through the thermoblock 13 and is automatically heated according to the preset temperature on the thermostat.

The temperature of the heated liquid does not exceed 45-50 "С.

Zo The washing solution, which has passed the cycle in the system being washed, enters the mud tank 11, in which large particles of sludge are screened and removed through the ball valve 12, and then enters the separator 10, where it is cleaned of the smallest particles of sludge and air, removing them, respectively, through the ball valve 10 and the air outlet 9. After cleaning, the washing solution is again run through the ring with the help of the circulation pump 7.

Periodically, in order to increase the efficiency of the washing process, compressed air from the compressor 5 is fed into the system by a pulsating method through the bypass valve 18, which executes a command from the automatic control cabinet 4. In this way, a water-air pulsating mixture is formed, which has a greater kinetic energy.

In the process of working out the "System Flush" program, the make-up pump 6 is in standby mode for receiving the "Start" command to maintain pressure in the system.

When switching to the "Reverse" mode, if there is not enough chemical washing solution in the system, close the ball valve 22, open the ball valve 24 and start the "Mixing of acids" program. Next, to switch to the "Reverse" mode, close the ball valves 23, 27, 28, open the ball valves 26, 29 and press the "Start" button. After the end of chemical washing and neutralization of the solution, the system is washed again by the method of cleaning with a water-air pulsating mixture.

The claimed mobile device for flushing heating and water supply systems, using a closed flushing system, allows without increasing the power of the circulation pump to increase the height of the flushing liquid, that is, to increase the height of the building being washed. The device allows washing even high-rise buildings (up to 32 floors). At the same time, this device is universal: due to the high automation and flexibility of setting the cleaning process, it can be used for cleaning both small-volume objects and objects with a large volume of space to be washed.

An increase in the quality of washing of heating and water supply systems is achieved by using several washing modes: - washing with cold water with the addition of compressed air (water-air pulsating mixture) and draining into the sewer; - chemical flushing, when a heated chemical flushing solution fills the system being flushed and circulates until the deposits are completely dissolved, which can be enhanced by additionally 60 using the method of cleaning with a water-air pulsating mixture.

The feed pump and the container for the introduction of the reagent can be used both for the purpose of maintaining the necessary pressure, introducing the chemical reagent into the system, mixing the reagent, that is, as a feeding unit. But it can also be used as a booster unit to create the necessary pressure when washing with a water-air pulsating mixture.

The use of a separator and a mud separator allows for 1 cycle of the washing solution to remove all air and sludge from the system, including very small particles. Thanks to this, the flushed system is immediately freed from sludge. At the same time, the washing solution is significantly saved, since the sludge is subsequently excluded from the chemical reaction.

Unlike the prototype, air supply by the compressor is not used to displace the washing solution from the system, but to create a pulsating water-air mixture, which allows removing non-coked and suspended particles of sludge and deposits from the systems being washed, which subsequently reduces the amount of chemical used reagent, as it removes the aforementioned sludge from the chemical reaction.

In addition, the claimed device is a highly automated, mobile, modular type that can be installed on a vehicle, which greatly increases its versatility and transportability.

Thus, in the claimed device, due to the expansion of functional capabilities and intensification of the washing process, the quality of washing heating and water supply systems is increased.

Claims (2)

USEFUL MODEL FORMULA 1. A mobile device for flushing heating and water supply systems, containing a container with a lid and a liquid level control device, connected to a control cabinet, a compressor and a pump-circulation system, which includes a feed pump, a circulation pump, a mud removal system, a heat source, moreover, ball valves are installed between the components of the device, which is distinguished by the fact that the tank and compressor are equipped with bypass valves, as a device for monitoring the liquid level, a block of level filling sensors is used, the electrodes of which are fixed inside the tank, as a feed pump, a pump with automatic pressure regulation is used, a mud removal system includes a separator and a mudguard, as a heat source uses a thermoblock with electronic control, and additionally contains a hydraulic compensator and a blow-off valve. 2. The mobile device according to claim 1, which is characterized by the fact that the circulation pump contains a system of automatic control of the circulation speed of the chemical solution. Q. The mobile device according to claim 1, which is distinguished by the fact that it is made of separate modules with the possibility of installation on a vehicle. ptn her two! and n GI and : BO 1 of us are E and | ; And! о ой нышны ши ши шк ши ше Зам за ии у ; Zh shi nan MO Zhe Vu zov Te i OH shi we рН M МН 75 НН p В In her 8 0 o "a Kk, z i o s i pish nin 0 KomputernaverstkaV. Matselod 00000000 State Intellectual Property Service of Ukraine, st. Urytskogo, 45, Kyiv, SME, 03680, Ukraine SE "Ukrainian Institute of Industrial Property", str. Glazunova, 1, Kyiv - 42, 01601