RU2808056C1 - Thermal accumulator (options) - Google Patents

Abstract

FIELD: heating engineering.

SUBSTANCE: heat accumulator used for heating and hot water supply of residential and non-residential premises. In the first embodiment, the heat accumulator includes a housing consisting of a cylindrical shell with torispherical end surfaces, on which a drain pipe, a pipe for connecting to the heating system, and an outlet for connecting the anode are located. On the side surface of the housing at different heights there are pipes for connecting various types of valves, both shut-off and control. The body has thermal insulation in the form of a removable cylindrical casing, the outer surface of which contains a lining. At the bottom, the housing is connected to an annular support. Also on the body at different heights there are pipes for connecting measuring instruments. In the second embodiment, the heat accumulator has all features of the first embodiment, while the body of the heat accumulator in the internal space contains a hot water supply circuit in the form of a coil twisted in a spiral.

EFFECT: creation of a heat accumulator operating under high pressure of the coolant with low maintenance complexity, the implementation of rapid heating of water in the hot water supply circuit, the protection of the internal surfaces of the heat accumulator body from corrosion and scale, and the preservation of the working energy of the coolant.

21 cl, 3 dwg

Description

Field of technology

The invention relates to the field of heating engineering and can be used for heating and hot water supply of residential and non-residential premises.

State of the art

There is a known utility model RU 206284 U1, “Heat accumulator”, MPK F24D 15/02, containing a housing, a heat accumulator, an air blower, and a heat exchanger. The body is equipped with a layer of thermal insulation. The heat accumulator is installed in the housing with the formation of an air gap between it and the thermal insulation layer. The heat accumulator consists of heat-accumulating elements fastened together. The heat storage elements are fastened together in such a way that they form supply channels and heating channels. The supply channels are isolated from the heating channels in the heat storage body and communicate with them through an air gap. The heating channels are equipped with electric heating elements. The air blower is connected to the heat exchanger and is designed to supply air through the air gap into the heating channels. Each of the supply channels is connected at the input to a heat exchanger, the output of which is connected to an air blower. The air gap is formed to ensure air supply from the air blower through the heating channels into the supply channels. To do this, the air gap can be closed around the perimeter on the side of the air blower installation with thermal insulation, or locking plates, or heat-accumulating elements. For the same purpose, the heat accumulator itself can be installed with the formation of an air gap only on three sides of the housing: on the side with the air blower, the side opposite to it and the side with open supply channels.

The disadvantage of this technical solution is the design of the heat accumulator is not designed to work with coolant under high pressure, high maintenance complexity, long heating of water in the hot water supply circuit passing through the heat exchanger of the heat accumulator.

Of the known technical solutions, close in purpose and technical essence to the claimed object is the invention SU 1355838 A1, “Tank”, MPK F24H 7/00, B65D 88/42, containing a tank, mainly a heat accumulator, containing a housing with a lid and a bottom, equipped with pipes , a condensate collector made in the form of a centering hollow rod, movably installed in the housing and connected to a floating umbrella having a peripheral flange forming a closed groove, the tank also contains shut-off valves mounted on vertical rods, movably installed in the lid and bottom of the housing, respectively. The groove is filled with sealant, and its forming flange has holes that interact with shut-off valves.

The disadvantage of the above-described technical solution is the design of the tank is not designed to work with coolant under high pressure, as well as to heat water in the hot water supply circuit, high labor intensity of maintenance, large heat losses of the carrier, lack of devices in the design of the tank and the possibility of their installation capable of protecting the internal surfaces tank from corrosion and scale.

The technical objective of the invention to solve the above-described disadvantages is to develop a heat accumulator operating under high pressure coolant, with low maintenance labor intensity, the ability to install devices to protect the internal surfaces of the heat accumulator body from corrosion and scale, with no loss of working energy of the coolant and ensuring rapid heating of water in the hot water supply circuit .

The essence of the invention

The technical problem in the first embodiment is solved by the fact that the body (1) of Fig. 1 of the heat accumulator is made of a cylindrical shell with torispherical end surfaces, on one of which there is an outlet for connecting the magnesium anode (8), and on the opposite there is a drain pipe (5) , while the housing (1) has thermal insulation (2) in the form of a removable cylindrical casing, the outer surface of which contains a lining (4) and is located on an annular support (6) in the form of a shell, and also on the outer surface of the housing (1) there are pipes for connection of measuring instruments (11) Fig.3.

The technical problem in the second embodiment is solved by the fact that the body (1) of Fig. 1 of the heat accumulator is made of a cylindrical shell with torispherical end surfaces and in the internal space contains a hot water supply circuit (9) of Fig. 2 in the form of a coil twisted in a spiral, and also on one of the end toroidal surfaces of the housing (1) of Fig. 1 there is an outlet for connecting the magnesium anode (8), and on the opposite there is a drain pipe (5), while the housing (1) has thermal insulation (2) in the form of a removable cylindrical casing the outer surface of which contains a lining (4) and is located on a ring support (6) in the form of a shell, and on the outer surface of the housing (1) there are pipes for connecting measuring instruments (11) of Fig.3.

In the first embodiment, the heat accumulator includes a housing (1) of Fig. 1, consisting of a cylindrical shell with torispherical end surfaces, which are connected to the shell by welding. The body (1) of Fig. 1 is made of carbon steel with a thickness of 2 mm to 5 mm. This design of the housing (1) of Fig. 1 is used for vessels operating under high pressure, which has good technical and operational characteristics. In a particular case of execution, the housing (1) of Fig. 1 is made of stainless steel, for operation of the device with aggressive media (coolant).

On the end toroidal surfaces of the housing (1) of Fig.1, a drain pipe (5) of Fig.1 and a connection pipe to the heating system (7) of Fig.1, which are made of a thick-walled seamless steel pipe at the end of which has a thread for connection, are installed by welding. The drain pipe (5) of Fig. 1 is necessary for draining the coolant from the heat accumulator during its maintenance. The connection pipe to the heating system (7) of Fig. 1 is necessary to connect the heat accumulator to the heating system to supply coolant to it. Also, on the end toroidal surface of the housing (1) of Fig. 1, an outlet for connecting the anode (8) of Fig. 1 is installed by welding; this outlet can be used both for connecting the magnesium anode (10) of Fig. 2, and for connecting various types of safety valves . The magnesium anode (10) of Fig. 1 is designed to protect the inner surface of the housing (1) of the heat accumulator and its main components from the corrosive effects of the coolant, as well as from scale formation. On the side surface of the housing (1) of Fig. 1, at different heights, pipes for connecting various types of shut-off and control valves (3) of Fig. 1 are installed by welding. The pipes are made of thick-walled seamless steel pipe at the end of which there is a thread, both in internal and external versions. In the particular case of execution as a thread on the drain pipe (5) of Fig. 1, the pipe for connecting to the heating system (7) of Fig. 1 and the pipe for connecting the fittings (3) of Fig. 1, a bend made in accordance with GOST 8969-75 or a coupling is used , made according to GOST 8966-75.

The body (1) of Fig.1 has thermal insulation (2) of Fig.1 in the form of a removable cylindrical casing with a thickness of at least 50 mm. Polyester material is used as thermal insulation for the body (1) of Fig. 1, which has low thermal conductivity, as well as a high fire resistance class (class B-s2d0). Thermal insulation (2) of Fig. 1 is used to reduce heat loss of the coolant and increases the efficiency of the heating system as a whole.

In a particular case, polyurethane foam can be used as thermal insulation (2) of Fig. 1; this type of material has low thermal conductivity and good technical and operational characteristics.

Thermal insulation (2) of Fig. 1 contains an outer lining (4) of Fig. 1, made, for example, from a special dirt-water-repellent fabric: Oxford g/kr PVC gray.

The outer cladding (4) of Fig.1 performs the function of protecting the thermal insulation (2) of Fig.1 from mechanical damage.

In the lower part of the heat accumulator, an annular support (6) of Fig. 1, which is a steel shell of the required thickness and height, is welded to the body (1) of Fig.1. The ring support (6) of Fig. 1 serves as the basis for installing the heat accumulator and allows you to evenly distribute the load of the heat accumulator on the surface.

Also on the body (1) of Fig. 1, pipes for connecting measuring instruments (11) of Fig. 3, for example, a thermometer, are installed by welding at different heights by welding. In a particular case of execution, an inspection window is provided in the housing (1) of Fig. 1 of the heat accumulator for easy cleaning of the internal surfaces of the housing (1). In the second embodiment, the heat accumulator has all the features of the first embodiment, while the body (1) of Fig. 1 of the heat accumulator in the internal space contains a hot water supply circuit (9) of Fig. 2 in the form of a coil twisted in a spiral and made of corrugated stainless pipe, grade steel pipes AISI 304.

In a particular case, the hot water supply circuit (9) of Fig. 2 is made of copper pipe since this material has high thermal conductivity, which will positively affect heat transfer and the efficiency of the circuit as a whole. In a particular case, the hot water supply circuit (9) of Fig. 2 is made of aluminum pipe since this material has high thermal conductivity and resistance to corrosion, which will positively affect heat transfer and the efficiency of the circuit as a whole.

The heat accumulator model range includes seven standard product sizes, differing in volume: 300, 500, 750, 1000, 1500, 2000, 3000 liters. This range is necessary to simplify the selection of a heat accumulator for the heating system. The technical result of the claimed solution is to create a heat accumulator operating under high pressure coolant with low maintenance complexity, to implement rapid heating of water in the hot water supply circuit, to protect the internal surfaces of the heat accumulator body from corrosion and scale, and to preserve the working energy of the coolant. Brief description of drawings:

Figure 1 shows a schematic cross-section of a heat accumulator;

Figure 2 shows a schematic representation of a heat accumulator in cross-section with a hot water supply circuit;

Figure 3 shows a schematic representation of a heat accumulator;

Brief description of structural elements:

1. - body;

2. - thermal insulation;

3. - pipe for connecting fittings;

4. - external cladding;

5. - drain pipe;

6. - support;

7. - connection pipe to the heating system;

8. - outlet for connecting the anode;

9. - hot water supply circuit;

10. - magnesium anode;

11. - connection pipe for measuring instruments.

Implementation of the declared decision

The heat accumulator in the first embodiment operates as follows. The heat accumulator is connected to the heating system by the connection pipe to the heating system (7) of Fig. 1 and the fittings connection pipes (3), and is also connected to the heat exchanger using the fittings connection pipes (3), and then it is filled with coolant, for example, water, water -glycol or alcohol solution with an operating temperature from +2 to +90°C. Next, a heat exchanger, for example, a solid fuel, electric or gas boiler, heats the coolant to the required temperature, which begins to circulate through the heating system through the heat accumulator.

The heat accumulator in the second embodiment operates as follows. The heat accumulator is connected to the heating system by the connection pipe to the heating system (7) of Fig. 1 and the fittings connection pipes (3), and is also connected to the heat exchanger using the fittings connection pipes (3), and then it is filled with coolant, for example, water, water -glycol or alcohol solution with an operating temperature from +2 to +90°C. Next, a heat exchanger, for example, a solid fuel, electric or gas boiler, heats the coolant to the required temperature, which begins to circulate through the heating system through the heat accumulator. Cold water enters the hot water supply circuit (9) of Fig. 2, then as it moves along the coil located inside the body (1) of Fig. 1 of the heat accumulator, the water is heated from the hot coolant of the heating system, and it can be used for the user’s domestic needs.

Claims (21)

1. A heat accumulator, including a housing containing a connection pipe to the heating system and pipes for connecting fittings, characterized in that the body is made of a cylindrical shell with torispherical end surfaces, on one of which there is an outlet for connecting a magnesium anode, and on the opposite there is a drain pipe , wherein the housing has thermal insulation in the form of a removable cylindrical casing, the outer surface of which contains a lining, and is located on an annular support in the form of a shell, and on the outer surface of the housing there are pipes for connecting measuring instruments. 2. The heat accumulator according to claim 1, characterized in that the body is made of carbon steel. 3. The heat accumulator according to claim 1, characterized in that the body is made of stainless steel. 4. The heat accumulator according to claim 1, characterized in that the drain pipe has a drain. 5. The heat accumulator according to claim 1, characterized in that the drain pipe contains a coupling. 6. The heat accumulator according to claim 1, characterized in that the thermal insulation is made of polyester material. 7. Heat accumulator according to claim 1, characterized in that the thermal insulation is made of polyurethane foam. 8. The heat accumulator according to claim 1, characterized in that the thermal insulation lining is made of dirt- and water-repellent fabric. 9. The heat accumulator according to claim 1, characterized in that the housing has an inspection window for cleaning the internal surfaces of the housing. 10. A heat accumulator, including a housing containing a connection pipe to the heating system and pipes for connecting fittings, characterized in that the housing is made of a cylindrical shell with torispherical end surfaces and in the internal space contains a hot water supply circuit in the form of a coil twisted in a spiral, and also on one of the torispherical end surfaces of the housing there is an outlet for connecting the magnesium anode, and on the opposite there is a drain pipe, while the housing has thermal insulation in the form of a removable cylindrical casing, the outer surface of which contains a lining, and is located on an annular support in the form of a shell, as well as On the outer surface of the housing there are pipes for connecting measuring instruments. 11. Heat accumulator according to claim 10, characterized in that the body is made of carbon steel. 12. Heat accumulator according to claim 10, characterized in that the body is made of stainless steel. 13. The heat accumulator according to claim 10, characterized in that the drain pipe has a drain. 14. The heat accumulator according to claim 10, characterized in that the drain pipe contains a coupling. 15. Heat accumulator according to claim 10, characterized in that the thermal insulation is made of polyester material. 16. Heat accumulator according to claim 10, characterized in that the thermal insulation is made of polyurethane foam. 17. The heat accumulator according to claim 10, characterized in that the thermal insulation lining is made of dirt- and water-repellent fabric. 18. The heat accumulator according to claim 10, characterized in that the housing has an inspection window for cleaning the internal surfaces of the housing. 19. The heat accumulator according to claim 10, characterized in that the hot water supply circuit is made of corrugated stainless pipe. 20. The heat accumulator according to claim 10, characterized in that the hot water supply circuit is made of copper pipe. 21. Heat accumulator according to claim 10, characterized in that the hot water supply circuit is made of aluminum pipe.

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