An expansion device for an organic heat carrier boiler

Abstract

This utility model relates to the field of organic heat carrier boiler technology and discloses an expansion device for an organic heat carrier boiler, including an expansion tank. An elastic diaphragm is fixed to the inner wall of the expansion tank, dividing the interior of the tank into an upper gas chamber and a lower liquid chamber. The gas chamber is filled with inert gas. An inlet pipe and an outlet pipe are connected to the bottom of the expansion tank, and an inlet valve and an outlet valve are connected to the top of the tank. A pressure regulating valve is also connected to the top of the expansion tank. This expansion device for an organic heat carrier boiler solves the problems of complex structure, difficult maintenance, and poor safety of traditional expansion devices.

Description

Technical Field

[0001] This utility model relates to the field of organic heat carrier boiler technology, specifically an expansion device for an organic heat carrier boiler. Background Technology

[0002] During operation, organic heat carrier boilers experience volume expansion due to temperature changes. If this expansion cannot be effectively absorbed, it can lead to increased system pressure and compromise safe operation. Therefore, an expansion device is necessary to absorb these volume changes in the heat carrier.

[0003] Existing expansion devices mostly adopt piston or float structures, which are complex, costly to manufacture, inconvenient to maintain, and prone to failure due to mechanical wear. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an expansion device for an organic heat carrier boiler to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an expansion device for an organic heat carrier boiler, comprising an expansion tank, wherein an elastic diaphragm is fixed to the inner wall of the expansion tank, the elastic diaphragm dividing the interior of the expansion tank into an upper gas chamber and a lower liquid chamber, the gas chamber being filled with inert gas, an inlet pipe and an outlet pipe being connected to the bottom of the expansion tank, an inlet valve and an outlet valve being connected to the top of the expansion tank, and a pressure regulating valve being connected to the top of the expansion tank.

[0006] Preferably, the elastic diaphragm is made of a high-temperature resistant and corrosion-resistant rubber material.

[0007] Preferably, the inert gas filled in the gas chamber is nitrogen.

[0008] Preferably, a pressure gauge is installed on the top of the expansion tank.

[0009] Preferably, the bottom of the expansion tank is connected to a drain valve.

[0010] Preferably, both the inlet pipe and the outlet pipe are equipped with one-way valves.

[0011] Preferably, the outer wall of the expansion tank is provided with a heat insulation layer.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0013] This invention uses an elastic diaphragm to divide the interior of the expansion tank into a gas chamber and a liquid chamber, utilizing inert gas to absorb the expansion of the heat carrier and maintain stable system pressure. An inlet valve, an exhaust valve, and a pressure regulating valve are installed at the top of the expansion tank, allowing for flexible adjustment of the pressure within the gas chamber and preventing overpressure operation. A pressure gauge monitors pressure changes in real time, improving the equipment's monitorability. A drain valve periodically removes impurities, keeping the liquid chamber clean. A one-way valve prevents backflow of the heat carrier, ensuring stable system operation. An insulation layer reduces heat loss and improves system thermal efficiency. The overall structure is simple in design, with low manufacturing and maintenance costs, making it suitable for small and medium-sized organic heat carrier boiler systems. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention;

[0016] Figure 3 This is a partial structural schematic diagram of the present invention;

[0017] Figure 4 This utility model Figure 2 A magnified structural diagram at point A in the diagram.

[0018] The components include: 1. Expansion tank; 2. Elastic diaphragm; 3. Gas chamber; 4. Liquid chamber; 5. Inlet valve; 6. Exhaust valve; 7. Liquid inlet pipe; 8. Liquid outlet pipe; 9. Pressure gauge; 10. Pressure regulating valve; 11. Drain valve; 12. Insulation layer; 13. Check valve. Detailed Implementation

[0019] The specific embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0020] Please see Figure 1-4 An expansion device for an organic heat carrier boiler includes an expansion tank 1. An elastic diaphragm 2 is fixed to the inner wall of the expansion tank 1, dividing the interior of the expansion tank 1 into an upper gas chamber 3 and a lower liquid chamber 4. The gas chamber 3 is filled with inert gas. An inlet pipe 7 and an outlet pipe 8 are connected to the bottom of the expansion tank 1. An inlet valve 5 and an outlet valve 6 are connected to the top of the expansion tank 1. A pressure regulating valve 10 is connected to the top of the expansion tank 1.

[0021] With the above technical solution, when the heat carrier expands due to heat, it enters the liquid chamber 4 through the liquid inlet pipe 7, pushing the elastic diaphragm 2 to deform upward and compress the inert gas in the gas chamber 3, thereby absorbing the expansion. The inlet valve 5 is used to fill the gas chamber 3 with inert gas, the exhaust valve 6 is used to discharge excess gas, and the pressure regulating valve 10 is used to automatically regulate the pressure in the gas chamber 3. This structural design can effectively absorb the expansion of the heat carrier, maintain stable system pressure, prevent the system from operating under overpressure, and ensure equipment safety.

[0022] The elastic diaphragm 2 is made of high-temperature resistant and corrosion-resistant rubber material.

[0023] Through the above technical solution, when the heat carrier expands and causes the elastic diaphragm 2 to deform, the high temperature and corrosion resistant rubber material can effectively resist the corrosion of the heat carrier and the effects of high temperature, extend the service life of the elastic diaphragm 2, and reduce maintenance costs.

[0024] The inert gas filled in gas chamber 3 is nitrogen.

[0025] Through the above technical solution, nitrogen has stable chemical properties and does not easily react with other substances. When the heat carrier expands and pushes the elastic diaphragm 2 to compress the gas chamber 3, nitrogen can effectively absorb the expansion pressure and maintain the system pressure stability. The inert properties of nitrogen can prevent the heat carrier from oxidizing, extend the service life of the heat carrier, and reduce system maintenance costs. This gas selection improves the safety and reliability of the expansion device and is suitable for long-term operation of organic heat carrier boiler systems.

[0026] Pressure gauge 9 is installed on the top of expansion tank 1.

[0027] With the above technical solution, when the system is running, the operator can intuitively understand the pressure in the gas chamber 3 through the pressure gauge 9, promptly detect pressure abnormalities, and take corresponding measures.

[0028] The bottom of the expansion tank 1 is connected to a drain valve 11.

[0029] Through the above technical solution, when the heat carrier is running for a long time, impurities and deposits may be generated, which will affect the normal operation of the system. The drain valve 11 can conveniently discharge these impurities, keep the liquid chamber 4 clean, prevent blockage and corrosion, extend the service life of the equipment, and improve the operating efficiency of the system.

[0030] One-way valves 13 are installed on the surfaces of both the inlet pipe 7 and the outlet pipe 8.

[0031] Through the above technical solution, when the system is running, the one-way valve 13 ensures that the heat carrier can only flow in one direction, avoiding backflow of the heat carrier that could cause system pressure fluctuations and equipment damage. This design improves the safety and reliability of the expansion device, ensures the stable operation of the system, and reduces maintenance costs.

[0032] The expansion tank 1 has an insulation layer 12 on its outer wall.

[0033] Through the above technical solution, when the heat carrier enters the liquid chamber 4, the insulation layer 12 can effectively reduce heat loss, maintain the temperature stability of the heat carrier, and improve the system's thermal efficiency. This design reduces energy consumption, saves operating costs, and is suitable for organic heat carrier boiler systems with high thermal efficiency requirements.

[0034] During operation, when the organic heat carrier boiler is running, the heat carrier expands due to heat and enters the liquid chamber 4 of the expansion tank 1 through the inlet pipe 7. This pushes the elastic diaphragm 2 upward, compressing the inert gas in the gas chamber 3 and absorbing the expansion. The nitrogen filling the gas chamber 3 effectively absorbs the expansion pressure, maintaining stable system pressure. The inlet valve 5 at the top of the expansion tank 1 is used to fill the gas chamber 3 with nitrogen, the exhaust valve 6 is used to discharge excess gas, and the pressure regulating valve 10 automatically regulates the pressure in the gas chamber 3. The pressure gauge 9 monitors the pressure changes in the gas chamber 3 in real time, and the drain valve 11 periodically discharges impurities from the liquid chamber 4. The one-way valves 13 on the inlet pipe 7 and the outlet pipe 8 prevent backflow of the heat carrier, and the insulation layer 12 reduces heat loss. When the system temperature decreases, the heat carrier volume shrinks, the elastic diaphragm 2 rebounds, the gas chamber 3 expands, and the heat carrier in the liquid chamber 4 flows back to the boiler system through the outlet pipe 8. This expansion device has a simple structure, can effectively absorb the expansion of the heat carrier, maintain stable system pressure, prevent overpressure operation, ensure equipment safety, extend service life, reduce maintenance costs, and improve system operating efficiency. It solves the problems of complex structure, difficult maintenance, and poor safety of traditional expansion devices.

[0035] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these specific embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An expansion device for an organic heat carrier boiler, comprising an expansion tank body (1), characterized in that: The expansion tank (1) has an elastic diaphragm (2) fixed to its inner wall. The elastic diaphragm (2) divides the interior of the expansion tank (1) into an upper gas chamber (3) and a lower liquid chamber (4). The gas chamber (3) is filled with inert gas. The bottom of the expansion tank (1) is connected to an inlet pipe (7) and an outlet pipe (8). The top of the expansion tank (1) is connected to an inlet valve (5) and an outlet valve (6). The top of the expansion tank (1) is connected to a pressure regulating valve (10).

2. An expansion device for use in an organic heat transfer boiler according to claim 1, characterized in that: The elastic diaphragm (2) is made of high-temperature resistant and corrosion-resistant rubber material.

3. An expansion device for use in an organic heat transfer boiler according to claim 1, characterized in that: The inert gas filled in the gas chamber (3) is nitrogen.

4. An expansion device for use in an organic heat transfer boiler according to claim 1, characterized in that: A pressure gauge (9) is installed on the top of the expansion tank (1).

5. An expansion device for use in an organic heat transfer boiler according to claim 1, characterized in that: The bottom of the expansion tank (1) is connected to a drain valve (11).

6. An expansion device for use in an organic heat transfer boiler according to claim 1, characterized in that: One-way valves (13) are installed on the surfaces of the inlet pipe (7) and the outlet pipe (8).

7. An expansion device for use in an organic heat transfer boiler according to claim 1, characterized in that: The expansion tank (1) has an insulation layer (12) on its outer wall.

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