External container of steam generator

Abstract

The steam generator external container comprises a barrel which is vertically arranged, a steam outlet is formed in the upper portion of the barrel, an emergency outlet is formed in the upper portion of the barrel, a water inlet is formed in the lower portion of the barrel, the steam generator external container further comprises a wire mesh demister, a support is fixedly installed on the upper portion of the interior of the barrel, and the wire mesh demister is detachably installed on the support. A safety valve is fixedly mounted at the emergency outlet, a steam outlet pipeline is communicated with the steam outlet and is communicated with an auxiliary pipeline, the auxiliary pipeline is provided with an external outlet, the outlet is blocked by a rupture disk, and the rupture pressure of the rupture disk is larger than the opening threshold value of the safety valve and smaller than or equal to the safety threshold value of the cylinder. The safety valve and the rupture disk are arranged in a mutually redundant mode, when the internal pressure is too large, the safety valve can be triggered and conduct pressure relief, the triggering pressure of the rupture disk is slightly larger than that of the safety valve, and the safety and stability of system operation are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of vacuum deoxygenation technology, and in particular to the external container of a steam generator. Background Technology

[0002] With the diversification of industrial production and daily life needs, future steam generators will place greater emphasis on miniaturization and multi-functionality. Miniaturized steam generators will be more flexible, portable, and easier to install and use; while multi-functional steam generators will be able to meet more application requirements, achieving multiple uses and complementary energy functions. The basic function of a steam generator is to provide steam.

[0003] However, most of the external containers of existing steam generators on the market cannot meet the needs of miniaturization and multi-functionality, and there are safety issues. When the test equipment is running at high power, it may be damaged due to overpressure. Utility Model Content

[0004] The purpose of this invention is to provide an external container for a steam generator to solve the problems existing in the prior art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] The steam generator external container includes a cylinder, which is vertically arranged;

[0007] A steam outlet is provided at the top of the cylinder, an emergency outlet is provided at the top of the cylinder, and a water inlet is provided at the bottom of the cylinder;

[0008] It also includes a wire mesh demister, and a bracket is fixedly installed on the upper part of the inside of the cylinder, on which the wire mesh demister can be detachably installed;

[0009] A safety valve is fixedly installed at the emergency exit, and a steam outlet pipe is connected to the steam outlet.

[0010] The steam outlet pipe is connected to the auxiliary pipe;

[0011] The auxiliary pipeline has an external outlet, which is sealed by a rupture disc.

[0012] The rupture disc is a rupture disc with a rupture pressure greater than the safety valve opening threshold and less than or equal to the safety threshold of the cylinder.

[0013] By adopting the above technical solution, water enters from the bottom of the steam generator and is heated and evaporated into steam by the heating element inside the container. As the steam flows upward, it passes through a wire mesh demister to remove droplets. The dry, high-temperature steam is used in subsequent processes. The wire mesh demister uses a conventional model. The safety valve and rupture disc are designed to prevent excessive internal pressure in the steam generator container, which could lead to explosions or other safety accidents. The combination of the safety valve and rupture disc is a redundant design. The trigger pressure set for the rupture disc is higher than that of the safety valve. When the system pressure exceeds the set value, the medium pressure will overcome the spring force of the safety valve, pushing the valve core to open, and the medium will be discharged through the discharge port. When the safety valve fails to work properly, the pressure rises further, reaching the trigger pressure of the rupture disc. The rupture disc will then activate immediately, breaking and rapidly releasing the pressure to protect the equipment and ensure that the pressure inside the container is quickly released.

[0014] In a further embodiment, the rupture disc includes a gripper, a blade, and an anti-camber disc;

[0015] The clamp is fixedly installed at the outlet end of the auxiliary pipe;

[0016] The clamp is provided with a through hole that communicates with the outside. Inside the through hole, an anti-arch plate and a blade are arranged in sequence along the pressure relief direction.

[0017] The blade is equipped with a vibration sensor;

[0018] The opening threshold of the safety valve is between 6.6 MPa and 6.65 MPa, and the rupture pressure range of the anti-arch plate is between 6.7 MPa and 6.9 MPa.

[0019] By adopting the above technical solution, the clamp is divided into inner and outer parts, both of which are provided with pressure relief holes. The pressure relief holes are connected to the auxiliary pipe and the external space. One part is deeper into the auxiliary pipe, while the other part is set outside the auxiliary pipe. The two parts are clamped together with a reverse arch plate. The reverse arch plate protrudes in the direction of the pressure, that is, the side closer to the auxiliary pipe. The pressure relief hole outside the auxiliary pipe is equipped with a blade. When the pressure exceeds the threshold, the reverse arch plate changes from its original reverse arch to a positive arch, and thus impacts the blade. At the same time, the vibration sensor on the blade is triggered, and the reverse arch plate breaks, the pressure pours out, the vibration sensor alarms the control module, and thus sends an alarm signal, indicating that the rupture disc has been activated.

[0020] In a further embodiment, a sealing ring is embedded at the edge of the rupture disc.

[0021] By adopting the above technical solution, the sealing ring is made of flexible graphite. Flexible graphite has unique physical and chemical properties, exhibiting excellent sealing performance in high temperature, high pressure and corrosive environments. It has high high temperature stability and self-lubricating properties, which can reduce friction between the sealing ring and the mounting base and extend its service life. Its flexibility and compressibility also allow the sealing ring to adapt to the slight unevenness on the sealing surface, ensuring excellent sealing effect. It can also withstand the temperature changes when the heating element inside the container is heated rapidly, and is not easy to break or fail due to thermal shock.

[0022] In a further embodiment, the cylinder includes an upper cylinder and a lower cylinder. The bottom of the outer side of the upper cylinder is provided with a first extension. The top of the first extension is provided with a plurality of positioning holes at equal intervals in the circumferential direction. The top of the outer side of the lower cylinder is provided with a second extension. The top of the second extension is provided with a plurality of threaded holes corresponding one-to-one with the plurality of positioning holes. The upper cylinder and the lower cylinder are bolted together and fixed.

[0023] By adopting the above technical solutions, the vertical cylinder design allows water and steam to naturally convection within the cylinder, resulting in a larger contact area between the heating element and the water, high heat transfer efficiency, and compact space utilization suitable for industrial sites with limited space. During the rising process of steam, droplets are separated by gravity, reducing the moisture content in the steam before contacting the wire mesh demister. The heating element can be installed from the top of the cylinder, making disassembly and replacement convenient. The vertical design also reduces the heat dissipation area and energy loss. When rapid pressure release is required, the safety valve and rupture disc at the top can also allow the pressure to pour out from above, effectively improving safety.

[0024] In a further embodiment, a sensor interface is provided on one side of the upper cylinder, and a temperature sensor can be detachably installed at the sensor interface.

[0025] By adopting the above technical solution, the temperature sensor can monitor the temperature of the steam to ensure that the steam reaches the required saturation state. At the same time, the temperature sensor can detect the temperature of the heating element and steam pipe to prevent equipment damage caused by excessive temperature. After feeding the temperature data back to the control system, the heating power is automatically adjusted according to the corresponding algorithm to improve operating efficiency and reduce manual intervention. When the temperature exceeds the set range, the alarm system is triggered to promptly remind personnel to take measures to avoid accidents.

[0026] In a further embodiment, a pressure detection interface is provided on one side of the lower cylinder, and a pressure gauge can be detachably installed at the pressure detection interface.

[0027] By adopting the above technical solutions, the pressure gauge can also monitor the steam pressure inside the steam generator in real time, avoiding equipment explosion due to overpressure or insufficient steam supply due to low pressure. The pressure gauge can also monitor pressure fluctuations and coordinate with the control system to keep the pressure stable, avoiding the mechanical stress on the equipment due to pressure fluctuations, extending the service life of the equipment, recording operating data for subsequent analysis and optimization of operating parameters, identifying potential problems, and optimizing equipment operating efficiency.

[0028] In a further embodiment, an insulation layer is provided on the outer side of the cylinder, and the insulation layer is made of aluminum silicate fiber.

[0029] By adopting the above technical solutions, the insulation layer can reduce surface heat loss of the steam generator container, improve thermal efficiency, reduce energy consumption and save operating costs. A good insulation layer can make more heat available for steam generation earlier and shorten heating time. When operators violate regulations or come into contact with the equipment surface by accident during operation, the insulation layer can reduce the risk of burns and improve the safety of the working environment. In addition, the insulation layer reduces the thermal stress caused by temperature changes inside and outside the equipment, extends the service life of the equipment and reduces maintenance costs.

[0030] In summary, this utility model has the following beneficial effects:

[0031] 1. By using safety valves and rupture discs, excessive internal pressure in the steam generator container can be prevented. The trigger pressure of the rupture disc is set higher than that of the safety valve. When the system pressure exceeds the set value, the medium pressure will overcome the spring force of the safety valve, pushing the valve core to open, and the medium will be discharged through the discharge port. When the safety valve fails to work properly, the pressure will rise further and reach the trigger pressure of the rupture disc. The one-time rupture disc will be activated immediately. The combination of safety valve and rupture disc is a redundant design. When the rupture disc breaks, it quickly releases the pressure, protecting the equipment and ensuring that the pressure inside the container is released quickly.

[0032] 2. By installing a wire mesh demister, filtration can be achieved through a wire mesh layer woven from metal wires, which is fixed by a support grid. The wire mesh demister has the characteristics of high efficiency separation and low pressure drop, separating liquid droplets in high-temperature steam, ensuring that the output steam is dry, and reducing the effect of liquid carryover. The wire mesh demister is also located at the top of the cylinder, which makes it easier to clean and replace. At the same time, it reduces replacement and cleaning time and maintenance costs during inspection.

[0033] 3. By setting up temperature sensors and pressure gauges, the temperature sensors can detect the temperature of the heating elements and steam pipes, preventing damage caused by overheating. After feeding the temperature data back to the control system, the heating power is automatically adjusted according to the corresponding algorithm to improve operating efficiency. The pressure gauge can monitor the steam pressure inside the steam generator to avoid equipment explosion due to overpressure or insufficient steam supply due to low pressure, thus improving operational stability. Attached Figure Description

[0034] Figure 1 This is an overall schematic diagram of the present invention;

[0035] Figure 2 This is a schematic diagram illustrating the structure of the rupture disc in this utility model.

[0036] In the diagram, 1. Cylinder; 11. Upper cylinder; 12. Lower cylinder; 2. Wire mesh demister; 3. Safety valve; 4. Auxiliary pipe; 5. Rupture disc; 51. Clamp; 52. Blade; 53. Anti-arching plate; 6. Vibration sensor; 7. Sealing ring; 8. Temperature sensor; 9. Pressure gauge; 10. Insulation layer. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the accompanying drawings.

[0038] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0039] like Figure 1 - Figure 2 As shown, the external container of the steam generator includes a cylinder 1, which is vertically arranged;

[0040] A steam outlet is provided at the top of the cylinder 1, an emergency outlet is provided at the top of the cylinder 1, and a water inlet is provided at the bottom of the cylinder 1.

[0041] It also includes a wire mesh demister 2, and a bracket is fixedly installed on the upper part of the inside of the cylinder 1, on which the wire mesh demister 2 can be detachably installed;

[0042] A safety valve 3 is fixedly installed at the emergency exit, and a steam outlet pipe is connected to the steam outlet.

[0043] The steam outlet pipe is connected to auxiliary pipe 4;

[0044] The auxiliary pipeline has an external outlet, which is sealed by a rupture disc 5.

[0045] The rupture disc 5 is a rupture disc whose rupture pressure is greater than the opening threshold of the safety valve 3 and less than or equal to the safety threshold of the cylinder 1.

[0046] In this embodiment, water enters from the bottom of the steam generator and is heated and evaporated into steam by the heating element inside the container. As the steam flows upward, it passes through the wire mesh demister 2 to remove droplets. The dried, high-temperature steam is used in subsequent processes. The wire mesh demister 2 is made of multiple layers of woven metal mesh and uses a conventional model. The safety valve 3 and the rupture disc 5 are both designed to prevent excessive internal pressure in the steam generator container from causing explosions or other safety accidents. The combination of the safety valve 3 and the rupture disc 5 is a redundant design. The trigger pressure set for the rupture disc 5 is slightly higher than that of the safety valve 3. When the system pressure exceeds the set value, the medium pressure will overcome the spring force of the safety valve 3, pushing the valve core to open, and the medium will be discharged through the discharge port. When the safety valve 3 fails to work properly, the pressure rises further, reaching the trigger pressure of the rupture disc 5. The disposable rupture disc 5 will immediately activate, rupture, and quickly release the pressure, protecting the equipment and ensuring that the pressure inside the container is quickly released.

[0047] Furthermore, the rupture disc 5 includes a clamp 51, a blade 52, and an anti-arching disc 53;

[0048] The clamp 51 is fixedly installed at the outlet end of the auxiliary pipe 4;

[0049] The clamp 51 is provided with a through hole that communicates with the outside. Inside the through hole, an anti-arch plate 53 and a blade 52 are arranged in sequence along the pressure relief direction.

[0050] The blade is equipped with a vibration sensor 6;

[0051] The opening threshold of the safety valve is between 6.6 MPa and 6.65 MPa, and the rupture pressure range of the anti-arch plate is between 6.7 MPa and 6.9 MPa.

[0052] In this embodiment, the clamp is divided into inner and outer parts, both of which are provided with pressure relief holes. The pressure relief holes are connected to the auxiliary pipe and the external space. One part is deeper into the auxiliary pipe, while the other part is located outside the auxiliary pipe. The two parts clamp a reverse arch plate, which protrudes in the direction of the pressure, that is, the side closer to the auxiliary pipe. A blade is provided in the pressure relief hole outside the auxiliary pipe. When the pressure exceeds the threshold, the reverse arch plate changes from its original reverse arch to a positive arch, and thus impacts the blade. At the same time, the vibration sensor on the blade is triggered, and the reverse arch plate breaks, releasing the pressure. The vibration sensor alarms the control module, thereby issuing an alarm signal to indicate that the rupture disc has been activated.

[0053] Furthermore, a sealing ring 7 is embedded at the edge of the anti-arch plate 53.

[0054] In this embodiment, the sealing ring 7 is made of flexible graphite. Flexible graphite has unique physical and chemical properties, exhibiting excellent sealing performance in high temperature, high pressure and corrosive environments. It has high high temperature stability and self-lubricating properties, which can reduce friction between the sealing ring 7 and the mounting base 4 and extend its service life. Its flexibility and compressibility also allow the sealing ring 7 to adapt to minor unevenness on the sealing surface, ensuring excellent sealing effect. It can also withstand the temperature changes when the heating element inside the container is heated rapidly, and is not prone to cracking or failure due to thermal shock.

[0055] Furthermore, the cylinder 1 includes an upper cylinder 11 and a lower cylinder 12. The bottom of the outer side of the upper cylinder 11 is provided with a first extension. The top of the first extension is provided with a plurality of positioning holes at equal intervals in the circumferential direction. The top of the outer side of the lower cylinder 12 is provided with a second extension. The top of the second extension is provided with a plurality of threaded holes corresponding one-to-one with the plurality of positioning holes. The upper cylinder 11 and the lower cylinder 12 are bolted together and fixed.

[0056] In this embodiment, the vertical cylinder 1 design allows water and steam to convect naturally within the cylinder 1, resulting in a larger contact area between the heating element and the water, high heat transfer efficiency, and compact space utilization suitable for industrial sites with limited space. During the rising process of steam, droplets are separated by gravity, reducing the moisture content in the steam before contacting the wire mesh demister 2. The heating element can be installed from the top of the cylinder 1, making disassembly and replacement convenient. The vertical design also reduces the heat dissipation area and energy loss. When rapid pressure release is required, the safety valve 3 and rupture disc 5 at the top can also allow the pressure to pour out from above, effectively improving safety.

[0057] Furthermore, a sensor interface is provided on one side of the upper cylinder 11, and a temperature sensor 8 can be detachably installed at the sensor interface.

[0058] In this embodiment, the temperature sensor 8 can monitor the temperature of the steam to ensure that the steam reaches the required saturation state. At the same time, the temperature sensor 8 can detect the temperature of the heating element and the steam pipe to prevent the equipment from being damaged due to excessive temperature. After feeding the temperature data back to the control system, the heating power is automatically adjusted according to the corresponding algorithm to improve operating efficiency and reduce manual intervention. When the temperature exceeds the set range, the alarm system is triggered to promptly remind personnel to take measures to avoid accidents.

[0059] Furthermore, a pressure detection interface is provided on one side of the lower cylinder 12, and a pressure gauge 9 can be detachably installed at the pressure detection interface.

[0060] In this embodiment, pressure gauge 9 can also monitor the steam pressure inside the steam generator in real time, avoiding equipment explosion due to overpressure or insufficient steam supply due to low pressure. Pressure gauge 9 can also monitor pressure fluctuations and coordinate with the control system to keep the pressure stable, avoiding the mechanical stress on the equipment due to pressure fluctuations, extending the service life of the equipment, recording operating data for subsequent analysis and optimization of operating parameters, identifying potential problems, and optimizing equipment operating efficiency.

[0061] Furthermore, an insulation layer 10 is provided on the outer side of the cylinder 1, and the insulation layer 10 is made of aluminum silicate fiber.

[0062] In this embodiment, the insulation layer 10 can reduce surface heat loss of the steam generator container, improve thermal efficiency, reduce energy consumption and save operating costs. A good insulation layer 10 can make more heat available for steam generation earlier and shorten heating time. When operators violate regulations or accidentally come into contact with the equipment surface during operation, the insulation layer 10 can reduce the risk of burns and improve the safety of the working environment. In addition, the insulation layer 10 reduces the thermal stress caused by temperature changes inside and outside the equipment, extends the service life of the equipment and reduces maintenance costs.

[0063] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0064] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. Steam generator external vessel, characterized in that: Including the cylinder (1), the cylinder (1) is vertically arranged; The upper part of the cylinder (1) is provided with a steam outlet, the upper part of the cylinder (1) is provided with an emergency outlet, and the lower part of the cylinder (1) is provided with a water inlet; It also includes a wire mesh demister (2), a support is fixedly installed on the inside of the cylinder (1), and the wire mesh demister (2) is detachably installed on the support; The safety valve (3) is fixedly installed at the emergency outlet, and the steam outlet is communicated with the steam outlet pipeline; The steam outlet pipeline is communicated with the auxiliary pipeline (4); The auxiliary pipeline has an external outlet, and the outlet is blocked by a rupture disc (5); The rupture disc (5) adopts a rupture disc (5) with a rupture pressure greater than the opening threshold of the safety valve (3) and less than or equal to the safety threshold of the cylinder (1).

2. The steam generator external vessel according to claim 1, characterized in that: The rupture disc (5) includes a holder (51), a blade (52) and an inverted arch piece (53); The holder (51) is fixedly installed at the outlet end of the auxiliary pipeline (4); The holder (51) is provided with a through hole communicated with the outside, and the through hole is provided with an inverted arch piece (53) and a blade (52) in sequence along the pressure relief direction; The blade is provided with a vibration sensor (6); The opening threshold of the safety valve is between 6.6MPa and 6.65MPa, and the rupture pressure range of the inverted arch piece is between 6.7MPa and 6.9MPa.

3. The steam generator external vessel according to claim 2, characterized in that: The edge of the inverted arch piece (53) is embedded with a sealing ring (7).

4. The steam generator external vessel according to claim 1, characterized in that: The cylinder (1) includes an upper cylinder (11) and a lower cylinder (12), the bottom of the outer side of the upper cylinder (11) is provided with a first extension, the top of the first extension is provided with a plurality of positioning holes in equal intervals in the circumferential direction, the top of the outer side of the lower cylinder (12) is provided with a second extension, the top of the second extension is provided with a plurality of threaded holes corresponding to the plurality of positioning holes, and the upper cylinder (11) and the lower cylinder (12) are bolted and fixed.

5. The steam generator external vessel according to claim 4, characterized in that: One side of the upper cylinder (11) is provided with a sensor interface, and a temperature sensor (8) is detachably installed at the sensor interface.

6. The steam generator external vessel according to claim 4, characterized in that: One side of the lower cylinder (12) is provided with a pressure detection interface, and a pressure gauge (9) is detachably installed at the pressure detection interface.

7. The steam generator external vessel according to claim 1, characterized in that: The outer side of the cylinder (1) is provided with a heat preservation layer (10), and the heat preservation layer (10) is made of aluminum silicate fiber.

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