A high temperature and high pressure performance heater

Abstract

The present invention discloses a high-temperature and high-pressure performance heater, including a heat exchange tube shell, a first heat exchange tube pass, a second heat exchange tube pass, a liquid accumulation cavity cylinder, a porous flow-limiting and sound-absorbing tube sheet, and a support seat, wherein the first heat exchange tube pass and the second heat exchange tube pass are respectively arranged at the front and rear ends of the heat exchange tube shell, and the support seats are respectively arranged vertically at the bottom of the heat exchange tube shell, and the liquid accumulation cavity cylinder is connected through a plurality of porous flow-limiting and sound-absorbing tube sheets and is arranged at the bottom of the heat exchange tube shell and is located between the two support seats. In the above manner, the present invention is mainly used for the pre-heating module of the gas engine, and uses high-temperature and high-pressure hot water to heat natural gas so that the natural gas can meet the requirements of the gas turbine. It adopts a horizontal structure, has the function of high-temperature and high-pressure hot water leakage detection, and has high safety performance. At the same time, the porous flow-limiting and sound-absorbing tube sheet has the function of flow limiting and sound-absorbing, which can effectively prevent noise.

Description

Technical Field

[0001] The present invention relates to the technical field of performance heaters, and in particular to a high-temperature and high-pressure performance heater. Background Art

[0002] For gas turbines, a performance heater is installed in the natural gas pretreatment stage. The heater is internally divided into a gas side and a water side. Its function is to draw a heat source from the medium-pressure drum of the waste heat boiler and enter the water side of the performance heater to heat the natural gas flowing on the gas side. The natural gas temperature is adjusted to the design value through regulation to ensure stable combustion.

[0003] This setting adopts the idea of ​​combined cycle, using waste heat to preheat natural gas, killing two birds with one stone. However, this method also has certain safety hazards. If there is a leak in the water-side pipeline inside the performance heater, a large amount of hot water will leak into the natural gas, causing the natural gas entering the combustion nozzle to carry water, which may cause the flame to adhere to the combustion nozzle and damage the gas turbine. At the same time, the accumulated liquid on the gas side may short-circuit the airflow and generate noise, causing noise pollution. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide a high-temperature and high-pressure performance heater, which is mainly used for the pre-heating module of the gas turbine. It uses high-temperature and high-pressure hot water to heat the natural gas so that the natural gas can meet the requirements of the gas turbine wheel. It adopts a horizontal structure and has the function of high-temperature and high-pressure hot water leakage detection. It has high safety performance. At the same time, it has flow limiting and silencing effects through the porous flow limiting and silencing tube plate, which can effectively prevent noise.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a high-temperature and high-pressure performance heater, including a heat exchange shell and tube pass, a first heat exchange tube pass, a second heat exchange tube pass, a liquid accumulation cavity cylinder, a porous flow-limiting and silencer tube plate and a support seat, the first heat exchange tube pass and the second heat exchange tube pass are respectively arranged at the front and rear ends of the heat exchange shell and tube pass, the support seats are respectively vertically arranged at the bottom of the heat exchange shell and tube pass, the liquid accumulation cavity cylinder is connected to the bottom of the heat exchange shell and tube pass through multiple porous flow-limiting and silencer tube plates and is located between the two support seats.

[0006] In a preferred embodiment of the present invention, the high temperature and high pressure performance heater comprises a hot water inlet and a hot water outlet, and the hot water inlet and the hot water outlet are horizontally arranged at the ends of the first heat exchange tube pass and the second heat exchange tube pass, respectively.

[0007] In a preferred embodiment of the present invention, the length of the first heat exchange tube pass is greater than the length of the second heat exchange tube pass.

[0008] In a preferred embodiment of the present invention, the upper end of the tube pass of the first heat exchange tube is further provided with a tube pass vent and a tube pass drain.

[0009] In a preferred embodiment of the present invention, the high temperature and high pressure performance heater comprises a natural gas outlet and a natural gas inlet, and the natural gas outlet and the natural gas inlet are respectively arranged on the same side at the front and rear ends of the heat exchange shell and tube.

[0010] In a preferred embodiment of the present invention, the upper end of the heat exchange tube shell side is also provided with a shell side vent and a shell side vent.

[0011] In a preferred embodiment of the present invention, the high temperature and high pressure performance heater further comprises lifting ears, which are respectively arranged at the upper end of the heat exchange tube shell and correspond to the position of the support seat.

[0012] In a preferred embodiment of the present invention, the high-temperature and high-pressure performance heater includes a shell-side sewage outlet and a liquid level gauge port. The shell-side sewage outlet is arranged in the middle position of the bottom of the liquid accumulation chamber cylinder, and the multiple liquid level gauge ports are respectively arranged at the upper end and side of the liquid accumulation chamber cylinder.

[0013] In a preferred embodiment of the present invention, the number of the liquid level gauge ports is 4.

[0014] In a preferred embodiment of the present invention, the number of the porous flow-limiting and silencer tube plates is at least 2.

[0015] The beneficial effects of the present invention are as follows: the high-temperature and high-pressure performance heater provided by the present invention is mainly used for the pre-heating module of the gas turbine, and utilizes high-temperature and high-pressure hot water to heat the natural gas so that the natural gas can meet the requirements of the gas turbine wheel. It adopts a horizontal structure and has the function of high-temperature and high-pressure hot water leakage detection, and has high safety performance. At the same time, it has the function of limiting and silencing through the porous flow-limiting and silencing tube plate, which can effectively prevent noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a preferred embodiment of a high temperature and high pressure performance heater of the present invention;

[0017] The markings of the components in the accompanying drawings are as follows: 1. Heat exchange tube shell side, 2. First heat exchange tube side, 3. Second heat exchange tube side, 4. Liquid accumulation chamber cylinder, 5. Multi-porous flow limiting silencer tube plate, 6. Support seat, 7. Hot water inlet, 8. Hot water outlet, 9. Natural gas outlet, 10. Natural gas inlet, 11. Tube side vent, 12. Tube side vent, 13. Shell side vent, 14. Shell side vent, 15. Lifting ear, 16. Shell side sewage outlet, 17. Liquid level gauge port, 18. Tube bundle assembly, 19. Bolt. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0019] See also Figure 1 , the embodiment of the present invention includes:

[0020] A high-temperature and high-pressure performance heater comprises a heat exchange tube shell 1, a first heat exchange tube pass 2, a second heat exchange tube pass 3, a liquid accumulation cavity cylinder 4, a porous flow limiting and silencing tube plate 5 and a support seat 6.

[0021] The first heat exchange tube pass 2 and the second heat exchange tube pass 3 are respectively arranged at the front and rear ends of the heat exchange tube shell pass 1, and the support seats 6 are respectively vertically arranged at the bottom of the heat exchange tube shell pass 1. The liquid accumulation chamber cylinder 3 is connected through a plurality of porous flow limiting and silencer tube plates 5 and is arranged at the bottom of the heat exchange tube shell pass 1 and is located between the two support seats 6.

[0022] In the above, the high temperature and high pressure performance heater includes a hot water inlet 7, a hot water outlet 8, a natural gas outlet 9 and a natural gas inlet 10, and the hot water inlet 7 and the hot water outlet 8 are horizontally arranged at the ends of the first heat exchange tube pass 2 and the second heat exchange tube pass 3 respectively; the natural gas outlet 9 and the natural gas inlet 10 are respectively arranged on the same side at the front and rear ends of the heat exchange tube shell 1.

[0023] The length of the first heat exchange tube side 2 is greater than that of the second heat exchange tube side 3. The upper end of the first heat exchange tube side 2 is also provided with a tube side vent 11 and a tube side vent 12; the upper end of the heat exchange tube shell side 1 is also provided with a shell side vent 13 and a shell side vent 14. Various display instruments, safety valves, pressure gauges, differential pressure transmitters, drain valves and other measuring elements can be connected through the tube side vent 11, the tube side vent 12, the shell side vent 13 and the shell side vent 14, which is convenient for control and detection.

[0024] The high temperature and high pressure performance heater further comprises lifting ears 15, which are respectively arranged at the upper end of the heat exchange tube shell 1 and correspond to the position of the support seat 6, and the lifting ears are used for lifting empty weight.

[0025] Furthermore, the high temperature and high pressure performance heater includes a shell-side sewage outlet 16 and a liquid level gauge outlet 17. The shell-side sewage outlet 16 is arranged at the middle position of the bottom of the liquid accumulation chamber cylinder 3, and the plurality of liquid level gauge outlets 17 are arranged at the upper end and the side of the liquid accumulation chamber cylinder. In this embodiment, the number of the liquid level gauge outlets 17 is 4, and a liquid level gauge is installed on the liquid level gauge outlet.

[0026] When the liquid level in the liquid accumulation chamber cylinder 3 reaches or exceeds the set liquid level value of the liquid level gauge, the liquid level gauge continues to send out a high liquid level alarm signal, indicating that there is a leakage. When the liquid level in the liquid accumulation chamber cylinder 3 is lower than the set liquid level value of the liquid level gauge, the liquid level gauge no longer sends out a high liquid level alarm signal, indicating that there is no leakage.

[0027] The high temperature and high pressure performance heater of the present application adopts a horizontal structure, and the heat exchange tube shell 1 contains natural gas. The first heat exchange tube pass 2 and the second heat exchange tube pass 3 contain high pressure hot water greater than 10MPa. A liquid accumulation chamber is set at the bottom of the heat exchange tube shell 1. Once high pressure hot water leaks to the gas side, the liquid level gauge can detect and send a signal to the user's TCS system to issue an alarm signal. In addition, it is also equipped with complete on-site display instruments, liquid level gauges with liquid level switches, safety valves, pressure gauges, differential pressure transmitters, drain valves, measuring elements and other auxiliary equipment interfaces.

[0028] Since the liquid accumulation chamber cylinder 3 may short-circuit the airflow and generate noise, the porous flow-limiting and sound-absorbing tube plates 5 at the inlets of both ends of the liquid accumulation chamber cylinder 3 are used for flow limiting and sound absorbing, and the number of the porous flow-limiting and sound-absorbing tube plates 5 is at least 2. It can effectively prevent noise, and the noise (sound pressure level) measured at 1 meter away from the equipment housing does not exceed 85 decibels. In this embodiment, the number of the porous flow-limiting and sound-absorbing tube plates 5 is 3.

[0029] In this embodiment, the heat exchange shell and tube side 1 adopts Q345D seamless steel pipe, and the heat exchange shell and tube side 1 is sealed and connected with the first heat exchange tube side 2 and the second heat exchange tube side 3 through the tube bundle assembly 18 and bolts 19, and the connection is firm and not easy to loosen.

[0030] The heat exchange tube shell 1 and the liquid accumulation chamber cylinder 3 are connected to the porous flow limiting and silencer tube plate 5 by welding, and the welding is wire-filled argon arc welding.

[0031] The temperature range of the high temperature and high pressure performance heater is relatively large, and the changes are relatively frequent, so the overall temperature change fatigue finite element analysis is also required. With the help of the large finite element software ANSYS17.0, the stress calculation of the heater is carried out, and then the corresponding strength evaluation of the equipment is carried out.

[0032] To this end, the excess height of the butt welds is ground flat and the transition of each fillet weld is polished to be smooth, which greatly increases the safety of use.

[0033] Different from the existing technical features:

[0034] 1. Set up a liquid accumulation chamber. Once high-pressure hot water leaks to the gas side, the liquid level meter can detect it and send a signal to the user's TCS system;

[0035] 2. Multi-porous flow-limiting and silencer tube plates are set at the entrances of both ends of the effusion chamber to limit the flow and silence the sound, which can effectively prevent noise.

[0036] In summary, the high-temperature and high-pressure performance heater provided by the present invention is mainly used for the pre-heating module of the gas turbine. It uses high-temperature and high-pressure hot water to heat the natural gas so that the natural gas can meet the requirements of the gas turbine wheel. It adopts a horizontal structure and has the function of high-temperature and high-pressure hot water leakage detection. It has high safety performance and has flow limiting and silencing effects through the porous flow limiting and silencing tube plate, which can effectively prevent noise.

[0037] In the description of the present invention, it should be noted that the components are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional test methods. The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside" and "outside" are based on the directions or positional relationships described in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0038] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high temperature and high pressure performance heater, characterized in that: It includes a heat exchange tube shell, a first heat exchange tube pass, a second heat exchange tube pass, a liquid accumulation cavity cylinder, a porous flow limiting and sound absorbing tube sheet and a support seat, wherein the first heat exchange tube pass and the second heat exchange tube pass are respectively arranged at the front and rear ends of the heat exchange tube shell, the support seats are respectively arranged vertically at the bottom of the heat exchange tube shell, and the liquid accumulation cavity cylinder is connected to the bottom of the heat exchange tube shell through a plurality of porous flow limiting and sound absorbing tube sheets and is located between the two support seats; The high-temperature and high-pressure performance heater includes a shell-side sewage outlet and a liquid level gauge outlet. The shell-side sewage outlet is arranged in the middle position of the bottom of the liquid accumulation chamber cylinder, and multiple liquid level gauge outlets are respectively arranged at the upper end and the side of the liquid accumulation chamber cylinder; the number of the liquid level gauge outlets is 4; the number of the porous flow-limiting and silencer tube plates is at least 2.

2. The high temperature and high pressure performance heater according to claim 1, characterized in that: The high temperature and high pressure performance heater comprises a hot water inlet and a hot water outlet, and the hot water inlet and the hot water outlet are horizontally arranged at the ends of the first heat exchange tube pass and the second heat exchange tube pass, respectively.

3. The high temperature and high pressure performance heater according to claim 2, characterized in that: The length of the first heat exchange tube pass is greater than the length of the second heat exchange tube pass.

4. The high temperature and high pressure performance heater according to claim 3, characterized in that: The upper end of the first heat exchange tube is also provided with a tube vent and a tube drain.

5. The high temperature and high pressure performance heater according to claim 1, characterized in that: The high temperature and high pressure performance heater comprises a natural gas outlet and a natural gas inlet, and the natural gas outlet and the natural gas inlet are respectively arranged on the same side of the front and rear ends of the heat exchange shell and tube.

6. The high temperature and high pressure performance heater according to claim 5, characterized in that: The upper end of the heat exchange tube shell side is also provided with a shell side vent and a shell side vent.

7. The high temperature and high pressure performance heater according to claim 6, characterized in that: The high temperature and high pressure performance heater also includes lifting ears, which are respectively arranged at the upper end of the heat exchange tube shell and correspond to the position of the support seat.

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