Anti-freezing heat preservation device of steam turbine generator unit
By designing an anti-freeze insulation device including a water tank, air heat exchanger and heating mechanism, the problem of bloating caused by freezing of coolant in the steam turbine generator set is solved, and the safe and economical operation of the equipment in a cold environment is achieved.
Patent Information
- Application Number
- CN202421813239.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-07-30
AI Technical Summary
In cold environments, the coolant in the water pipes and air heat exchangers is prone to freeze and cause bloating, affecting the safe and economical operation of the equipment.
An anti-freeze insulation device including a water tank, an air heat exchanger, a water inlet pipe, a water outlet pipe and a heating mechanism is designed. Through the design of the water tank and pipe, the coolant is centrally stored, the ice is quickly melted by heating mechanism, and the deformation space is provided through the rubber plate to prevent the equipment from swelling.
It effectively prevents equipment bloating caused by the freezing of coolant, and ensures the normal use and maintenance of the steam turbine generator set in cold environments.
Smart Images
Figure CN222894294U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of steam turbine generator maintenance and relates to an antifreeze and heat preservation device for a steam turbine generator set. Background Art
[0002] With the development of economy, industrial steam turbines are widely used as a high-speed power machinery. However, for steam turbines with relatively large parameters, their operation and management are difficult due to their complex structure and many auxiliary equipment. It plays an important role in the safe use of steam turbines and protecting them from damage.
[0003] Daily maintenance plays an important role in the safe use of steam turbines and protecting them from damage. It is also an important part of protecting the safe and economical operation of steam turbines. In the extreme cold environment of winter, when the steam turbine generator has not been started for a long time, the coolant in its air heat exchanger and water pipes is easy to freeze and burst the device, which is not conducive to the use of the steam turbine generator in a cold environment.
[0004] Based on this, we designed an antifreeze and heat preservation device for steam turbine generator sets. Utility Model Content
[0005] The purpose of the utility model is to solve the above-mentioned problems in the existing technology and to propose an antifreeze and heat preservation device for a steam turbine generator set. The technical problem to be solved by the device is: how to prevent the coolant in the water pipes and air heat exchangers of the steam turbine generator set from freezing and bursting the equipment, so as to facilitate the use of the steam turbine generator set in a cold environment.
[0006] The purpose of the utility model can be achieved through the following technical solutions:
[0007] An antifreeze and heat preservation device for a steam turbine generator set comprises a water tank, an air heat exchanger, and a water inlet pipe and a water outlet pipe connected to the air heat exchanger, wherein the water inlet pipe is connected to a water-steam dual-purpose pump, an input pipe and an output pipe are connected to the side end of the water outlet pipe, and the input pipe and the output pipe are connected to the water tank from the upper end, a first solenoid valve and a second solenoid valve are respectively installed on the input pipe and the output pipe, a third solenoid valve is installed on the water outlet pipe, and the third solenoid valve is located between the input pipe and the output pipe, an extension pipe is arranged in the water tank, and a connecting mechanism is arranged between the extension pipe and the output pipe, and a heating mechanism is arranged in the water tank.
[0008] The connecting mechanism includes an electric push rod fixed on the upper end of the water tank, the output shaft of the electric push rod extends into the water tank and is fixed with a connecting plate, the connecting plate is fixedly connected to an extension pipe, the extension pipe is located directly below the output pipe, and a plurality of sealing rings are fixed on the outer side of the upper end of the extension pipe.
[0009] With the above structure, when the electric push rod is retracted during use, the extension tube can be driven upward through the connecting plate, and the upper end of the extension tube will be inserted into the inner side of the output tube, and a sealing connection effect will be achieved under the action of the sealing ring.
[0010] The heating mechanism comprises a floating plate arranged inside the water tank, and a heating wire is arranged below the floating plate, a power supply port is arranged at the upper end of the water tank, and a spring wire is connected between the heating wire and the power supply port.
[0011] With the above structure, when the coolant freezes in the water tank during use, the ice will float above the coolant, and the floating plate will float on the ice surface, so that the ice can be heated more quickly and the melting speed can be increased.
[0012] A rubber plate is fixed on the inner side of the water tank, and a plurality of supporting plates are arranged between the rubber plate and the inner wall of the water tank.
[0013] With the above structure, when the coolant in the water tank freezes, it will squeeze the rubber sheet outward, and the rubber sheet provides a deformation space, which can further prevent the water tank from bursting.
[0014] A transparent cover plate is arranged on one side of the water tank.
[0015] With the above structure, the operator can see the turbidity and amount of the coolant through the transparent cover, which is convenient for timely adding or replacing the coolant.
[0016] One side of the water tank is connected with a liquid filling valve and a liquid discharge valve.
[0017] With the above structure, the operator can add coolant or replace coolant through the filling valve and the drain valve, which is more convenient to use.
[0018] Compared with the prior art, the antifreeze and heat preservation device of the steam turbine generator set has the following advantages:
[0019] 1. Through the water tank, input pipe, output pipe, extension pipe and connecting mechanism, the coolant in the air heat exchanger and the entire circulation pipeline can be transferred to the water tank for centralized storage to prevent the coolant from freezing and bursting the circulation pipeline and air heat exchanger, making it convenient to use the steam turbine generator set in a cold environment.
[0020] 2. The heating mechanism can melt the ice in the coolant before restarting, and during the melting process, the heating wire keeps close to the ice, which improves the heating efficiency and facilitates restarting the equipment.
[0021] 3. When the coolant in the water tank freezes, the rubber plate will be squeezed outward. The rubber plate provides deformation space, which can further prevent the water tank from bursting and further improve the antifreeze effect of the device.
[0022] 4. Through the transparent cover, filling valve and drain valve, the status of the coolant can be judged in time, and the operator can add or replace the coolant in time, which improves the convenience of maintenance of the steam turbine generator set. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0024] Figure 2 It is a three-dimensional structural schematic diagram of the other side of the utility model;
[0025] Figure 3 It is a schematic diagram of the internal structure of the water tank in the utility model;
[0026] Figure 4 It is a schematic diagram of the bottom structure of the water tank in the utility model;
[0027] Figure 5 It is a structural schematic diagram of the connecting mechanism in the utility model.
[0028] In the figure: 1. air heat exchanger; 2. water inlet pipe; 3. water outlet pipe; 4. water-steam dual-purpose pump; 5. water tank; 6. input pipe; 7. output pipe; 8. first solenoid valve; 9. second solenoid valve; 10. third solenoid valve; 11. extension pipe; 12. sealing ring; 13. connecting plate; 14. electric push rod; 15. floating plate; 16. heating wire; 17. power supply port; 18. spring wire; 19. rubber plate; 20. support plate; 21. transparent cover plate; 22. filling valve; 23. drain valve. DETAILED DESCRIPTION
[0029] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.
[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0031] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.
[0032] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.
[0033] See also Figure 1-5 The present embodiment provides an antifreeze and heat preservation device for a steam turbine generator set, comprising a water tank 5, an air heat exchanger 1, and a water inlet pipe 2 and a water outlet pipe 3 connected to the air heat exchanger 1, the water inlet pipe 2 is connected to a water-steam dual-purpose pump 4, the side end of the water outlet pipe 3 is connected to an input pipe 6 and an output pipe 7, and the input pipe 6 and the output pipe 7 are connected to the water tank 5 from the upper end, the input pipe 6 and the output pipe 7 are respectively installed with a first solenoid valve 8 and a second solenoid valve 9, the water outlet pipe 3 is installed with a third solenoid valve 10, and the third solenoid valve 10 is located between the input pipe 6 and the output pipe 7, an extension pipe 11 is arranged in the water tank 5, and a connecting mechanism is arranged between the extension pipe 11 and the output pipe 7, and a heating mechanism is arranged in the water tank 5.
[0034] The connecting mechanism includes an electric push rod 14 fixed to the upper end of the water tank 5. The output shaft of the electric push rod 14 extends to the inside of the water tank 5 and is fixed with a connecting plate 13. The connecting plate 13 is fixedly connected to the extension tube 11. The extension tube 11 is located directly below the output tube 7, and a plurality of sealing rings 12 are fixed to the outer side of the upper end of the extension tube 11. When in use, when the electric push rod 14 contracts, the extension tube 11 can be driven to move upward through the connecting plate 13, and the upper end of the extension tube 11 will be inserted into the inner side of the output tube 7. Under the action of the sealing ring 12, a sealing connection effect is achieved.
[0035] The heating mechanism includes a floating plate 15 arranged on the inner side of the water tank 5, and a heating wire 16 is arranged below the floating plate 15, a power supply port 17 is arranged at the upper end of the water tank 5, and a spring wire 18 is connected between the heating wire 16 and the power supply port 17; when in use, when the coolant freezes in the water tank 5, the ice will float above the coolant, and the floating plate 15 will float on the ice surface, which can heat the ice more quickly and increase the melting speed.
[0036] A rubber plate 19 is fixed to the inside of the water tank 5, and a plurality of support plates 20 are arranged between the rubber plate 19 and the inner wall of the water tank 5; when the coolant in the water tank 5 freezes, the rubber plate 19 will be squeezed outward, and the rubber plate 19 provides a deformation space, which can further prevent the water tank 5 from bursting.
[0037] A transparent cover plate 21 is provided on one side of the water tank 5; the operator can see the turbidity and amount of the coolant through the transparent cover plate 21, so as to add or replace the coolant in time.
[0038] A liquid filling valve 22 and a liquid discharge valve 23 are connected to one side of the water tank 5; an operator can add coolant or replace coolant through the liquid filling valve 22 and the liquid discharge valve 23, which is more convenient to use.
[0039] In this embodiment, the above-mentioned fixing methods are the most commonly used fixing connection methods in this field, such as welding, bolt connection, etc.; the above-mentioned electrical components such as the water-steam dual-purpose pump 4, the first solenoid valve 8, the second solenoid valve 9, the third solenoid valve 10 and the electric push rod 14, etc., are all existing technology products and can be directly purchased and used in the market, and the specific principles will not be repeated.
[0040] The working principle of this utility model:
[0041] During the operation of the steam turbine generator set, the coolant in the air heat exchanger 1, the water inlet pipe 2 and the water outlet pipe 3 passes through the cooling pipe of the steam turbine generator set under the action of the water-steam dual-purpose pump 4 and circulates. In addition, the air is blown to the air heat exchanger 1 by the fan, so that the heat dissipation effect can be achieved in the circulation of the coolant. When shutting down in a cold environment, the first solenoid valve 8 and the second solenoid valve 9 are opened, and the third solenoid valve 10 is closed. At the same time, the electric push rod 14 is extended to separate the extension pipe 11 from the output pipe 7. At this time, the coolant will all enter the water tank 5, and the output pipe 7 cannot contact the coolant at the bottom of the water tank 5. Therefore, the air above the water tank 5 will be discharged into the circulation pipe and the inside of the air heat exchanger 1, which can effectively prevent the pipe and the air heat exchanger 1 from freezing and bursting. When the coolant in the water tank 5 freezes, it will squeeze the rubber plate 19 outward. The rubber plate 19 provides a deformation space, which can further prevent the water tank 5 from bursting. In addition The operator can see the turbidity and amount of the coolant through the transparent cover 21, which is convenient for timely adding or replacing the coolant. When the steam turbine generator set needs to be started again, the circuit can be connected through the power supply port 17, so that the electric heating wire 16 heats and melts the ice inside the water tank 5, and the ice will float on the coolant, and the floating plate 15 will float on the ice surface, which can heat the ice more quickly and increase the melting speed. After melting, the water-steam dual-purpose pump 4 is started, and the electric push rod 14 is retracted to connect the extension pipe 11 and the output pipe 7. At this time, under the action of the water-steam dual-purpose pump 4, the coolant in the water tank 5 will pass through the output pipe 7 and enter the circulation pipe and the air heat exchanger 1. After running for a certain period of time, when the input pipe 6 inputs coolant into the water tank 5, it indicates that the circulation pipe and the air heat exchanger 1 are full of coolant. At this time, the first solenoid valve 8 and the second solenoid valve 9 can be closed and the third solenoid valve 10 can be opened to continuously cool the steam turbine generator set.
[0042] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.
Claims
1. An antifreeze and heat preservation device for a steam turbine generator set, comprising a water tank (5), an air heat exchanger (1), and a water inlet pipe (2) and a water outlet pipe (3) connected to the air heat exchanger (1), characterized in that: The water inlet pipe (2) is connected to a water-steam dual-purpose pump (4); the side end of the water outlet pipe (3) is connected to an input pipe (6) and an output pipe (7); the input pipe (6) and the output pipe (7) are connected to a water tank (5) from the upper end; a first solenoid valve (8) and a second solenoid valve (9) are respectively installed on the input pipe (6) and the output pipe (7); a third solenoid valve (10) is installed on the water outlet pipe (3); and the third solenoid valve (10) is located between the input pipe (6) and the output pipe (7); an extension pipe (11) is arranged in the water tank (5); a connection mechanism is arranged between the extension pipe (11) and the output pipe (7); and a heating mechanism is arranged in the water tank (5).
2. The antifreeze and heat preservation device of a steam turbine generator set according to claim 1, characterized in that: The connection mechanism comprises an electric push rod (14) fixed at the upper end of the water tank (5); the output shaft of the electric push rod (14) extends into the interior of the water tank (5) and is fixed with a connection plate (13); the connection plate (13) is fixedly connected to an extension tube (11); the extension tube (11) is located directly below the output tube (7); and a plurality of sealing rings (12) are fixed on the outer side of the upper end of the extension tube (11).
3. The antifreeze and heat preservation device of a steam turbine generator set according to claim 1 or 2, characterized in that: The heating mechanism comprises a floating plate (15) arranged inside the water tank (5), a heating wire (16) is arranged below the floating plate (15), a power supply port (17) is arranged at the upper end of the water tank (5), and a spring wire (18) is connected between the heating wire (16) and the power supply port (17).
4. The antifreeze and heat preservation device of a steam turbine generator set according to claim 1, characterized in that: A rubber plate (19) is fixed on the inner side of the water tank (5), and a plurality of support plates (20) are arranged between the rubber plate (19) and the inner wall of the water tank (5).
5. The antifreeze and heat preservation device for a steam turbine generator set according to claim 1, characterized in that: A transparent cover plate (21) is provided on one side of the water tank (5).
6. The antifreeze and heat preservation device of a steam turbine generator set according to claim 1 or 5, characterized in that: One side of the water tank (5) is connected to a liquid injection valve (22) and a liquid discharge valve (23).