Temperature and pressure reducer for combined heat and power generation

Abstract

The invention belongs to the field of temperature and pressure reducers, and particularly relates to a temperature and pressure reducer for combined heat and power generation, which comprises a shell, a pressure reducing cavity and a temperature reducing cavity are respectively formed in two sides in the shell, a pressure reducing mechanism and a temperature reducing mechanism are respectively arranged in the pressure reducing cavity and the temperature reducing cavity, and the pressure reducing mechanism comprises a pressure reducing plate for reducing pressure and a driving rod. The temperature reducing mechanism comprises a temperature reducing pipe used for reducing temperature and a driving pipe. When a pressure reducing plate drives a driving rod to rotate, a rotating disc can be driven to rotate above a shell, a piston can be driven to reciprocate left and right in a water barrel through a crank connecting rod, desuperheating water can be automatically guided into a desuperheating pipe through a water inlet pipe and a one-way valve, the water spraying operation of an atomizing nozzle is automatically controlled in a linkage mode, and the water spraying efficiency is improved. And the higher the pressure of the steam, the higher the rotating speed of the temperature reducing pipe and the more the water mist sprayed by the atomizing spray head, automatic adjustment can be carried out according to the pressure of the steam, electrical components do not need to be used, and the use precision is high.

Description

Technical Field

[0001] The present invention relates to the technical field of desuperheating and pressure reducing valves, and specifically to a desuperheating and pressure reducing valve for cogeneration. Background Art

[0002] Cogeneration is an energy utilization method that simultaneously uses the thermal energy generated by fuel combustion for power generation and heating. In a cogeneration system, fuel burns in a boiler or other heat generator to produce high-temperature and high-pressure steam. These steams first enter a steam turbine, pushing the blades of the steam turbine to rotate, thereby driving a generator to generate electricity. The steam that has done work in the steam turbine still has a relatively high temperature and pressure. At this time, these steams can pass through devices such as heat exchangers to transfer heat to users in need of heating, such as the heating system of residential buildings, the production heat of industrial factories, etc.

[0003] In a cogeneration system, the desuperheating and pressure reducing valve is mainly used to adjust the temperature and pressure of steam. The steam discharged from the steam turbine may have a relatively high temperature and pressure. When these steams are used for different purposes such as heating, it is necessary to adjust their parameters to an appropriate range. When the desuperheating and pressure reducing valve is working, first, the high-pressure and high-temperature steam is depressurized by a pressure-reducing steam regulating valve, and then desuperheating water is sprayed into the steam pipeline through a desuperheating water regulating valve and a nozzle to cool the high-temperature steam, thereby achieving the effect of desuperheating and pressure reduction.

[0004] According to the disclosed patent CN119321559A, a desuperheating and pressure reducing valve for cogeneration includes a conveying pipe, a pressure-reducing steam valve, a desuperheating mechanism, an adjusting mechanism, and a filtering mechanism. The pressure-reducing steam valve is fixedly installed at the output end of the conveying pipe, and the pressure-reducing steam valve is used to reduce the pressure of the steam in the conveying pipe. The desuperheating mechanism is fixedly installed at the output end of the pressure-reducing steam valve, and the desuperheating mechanism is used to spray desuperheating water on the steam depressurized by the pressure-reducing steam valve for desuperheating. The adjusting mechanism is fixedly installed inside the desuperheating mechanism, and the adjusting mechanism is used to adjust the angle of spraying desuperheating water by the desuperheating mechanism.

[0005] In the process of implementing the invention, the inventor found that at least the following problems in the prior art have not been solved. In the above case, when the desuperheating water impacts the impeller, it will drive the L-shaped rod to rotate, causing the moving rod to move vertically back and forth, and then driving the annular pipe to swing back and forth, so that the desuperheating water in the annular pipe can be sprayed into the steam from nozzles at different angles, forming a cross-flow mixture, which can break the original flow state of the steam and thus improve the mixing efficiency. However, during use, it is necessary for the staff to manually control the desuperheating water regulating valve to control the discharge amount of desuperheating water, and it is impossible to automatically adjust the discharge amount of desuperheating water according to the steam pressure, resulting in a low degree of automation. Therefore, a new technical solution needs to be designed to solve this problem. Summary of the Invention

[0006] The object of the present invention is to provide a desuperheater and pressure reducer for cogeneration of heat and power, so as to solve the current technical problem of being able to automatically control the discharge amount of desuperheating water according to the pressure of steam.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a temperature and pressure reducing device for cogeneration of heat and power, comprising a shell, a pressure reducing chamber and a temperature reducing chamber are respectively provided on both sides of the shell, a pressure reducing mechanism and a temperature reducing mechanism are respectively provided inside the pressure reducing chamber and the temperature reducing chamber, the pressure reducing mechanism comprises a pressure reducing plate and a driving rod for pressure reducing, the temperature reducing mechanism comprises a temperature reducing pipe and a driving pipe for temperature reducing, atomizing nozzles are equidistantly installed on the outside of the temperature reducing pipe, a water inlet mechanism is provided above the shell, the water inlet mechanism comprises a water cylinder and a turntable for injecting water into the driving pipe.

[0008] As a preferred embodiment of the present invention, the pressure reducing plates are equidistantly installed on the outside of the driving rod, the pressure reducing plates are placed on the inside of the pressure reducing chamber, the cooling tubes are equidistantly installed on the outside of the driving tube from top to bottom, and the cooling tubes are placed on the inside of the cooling chamber.

[0009] As a preferred embodiment of the present invention, the driving rod and the driving tube are placed at one end above the shell, vertically penetrate the middle of the pressure reducing pulley and the temperature reducing pulley respectively, and are fixedly connected with the pressure reducing pulley and the temperature reducing pulley, the pressure reducing pulley is horizontally aligned with the temperature reducing pulley, and the sizes of the pressure reducing pulley and the temperature reducing pulley match, the pressure reducing pulley is transmission connected to the temperature reducing pulley via a transmission belt, and the driving tube and the driving tube are both rotatably connected to the shell through a sealed bearing.

[0010] As a preferred embodiment of the present invention, one end of the driving tube close to the pressure reducing pulley is fixedly connected to the middle part of the bottom side of the turntable, and one end of the driving tube close to the temperature reducing pulley is rotatably connected to the bottom side of one end of the water cylinder through a sealed bearing. A piston is slidably connected inside the water cylinder, and the middle part of the piston close to the turntable side is hinged to one end of the upper surface of the turntable through a crank connecting rod, and the crank connecting rod matches the sizes of the water cylinder and the turntable.

[0011] As a preferred embodiment of the present invention, the driving pipe is connected to the cooling pipe, and the water cylinder is connected to the top end of the driving pipe.

[0012] As a preferred embodiment of the present invention, one end of the water cylinder away from the turntable is fixedly connected to the upper surface of the shell through a vertical fixing plate, and one end of the water cylinder away from the turntable is horizontally fixedly installed with a water inlet pipe.

[0013] As a preferred embodiment of the present invention, the water outlet end of the water inlet pipe is connected to the water cylinder, and a one-way valve is provided inside the water inlet pipe and the upper end of the drive pipe.

[0014] As a preferred embodiment of the present invention, the pressure reduction chamber is communicated with the temperature reduction chamber, and pipe joints are symmetrically installed at both ends of the housing.

[0015] As a preferred embodiment of the present invention, the pressure reduction plate is matched with the size of the pressure reduction chamber, and the temperature reduction pipe is matched with the size of the temperature reduction chamber.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] In the present invention, pressure reduction plates are equidistantly installed on the outer side of the driving rod inside the pressure reduction chamber. The high-pressure steam can push the pressure reduction plates to rotate and then be introduced into the temperature reduction chamber. Since the discharge amount of the steam decreases, its flow rate increases, thereby reducing the pressure of the steam. At the same time, the driving rod can drive the pressure reduction belt pulley to rotate, and through the transmission belt, it can drive the driving pipe at the bottom side of the temperature reduction belt pulley to rotate, further driving the atomizing nozzles on the outer side of the temperature reduction pipe to rotate inside the temperature reduction chamber, which can break the original flow state of the steam, thereby improving the mixing efficiency. At the same time, the temperature reduction water is evenly sprayed inside the temperature reduction chamber, further improving the temperature reduction effect of the temperature reduction chamber.

[0018] When the driving rod is driven to rotate by the pressure reduction plate, it can drive the turntable to rotate above the housing. Through the crank connecting rod, it can drive the piston to reciprocate left and right inside the water cylinder. Through the water inlet pipe and the check valve, the temperature reduction water can be automatically introduced into the temperature reduction pipe. By adopting a linkage method, the spraying operation of the atomizing nozzles is automatically controlled. Moreover, the greater the pressure of the steam, the faster the rotation speed of the temperature reduction pipe, and the more water mist is sprayed by the atomizing nozzles. It can be automatically adjusted according to the pressure of the steam, without the need to use electrical components, and has high use accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objectives and advantages of the present invention will become more obvious:

[0020] Figure 1 It is the front view of a temperature reduction and pressure reduction device for combined heat and power generation of the present invention;

[0021] Figure 2 It is the internal schematic diagram of the pressure reduction chamber and the temperature reduction chamber of a temperature reduction and pressure reduction device for combined heat and power generation of the present invention;

[0022] Figure 3 It is the working schematic diagram of the pressure reduction plate and the temperature reduction pipe of a temperature reduction and pressure reduction device for combined heat and power generation of the present invention;

[0023] Figure 4 It is the schematic diagram of the water cylinder water inlet mechanism of a temperature reduction and pressure reduction device for combined heat and power generation of the present invention.

[0024] In the figure: 1. Housing; 11. Pressure reduction chamber; 12. Temperature reduction chamber; 13. Pressure reduction plate; 14. Temperature reduction pipe; 141. Atomizing nozzle; 15. Pressure reduction pulley; 16. Temperature reduction pulley; 17. Transmission belt; 18. Driving rod; 19. Driving pipe; 2. Turntable; 21. Water cylinder; 22. Piston; 23. Crank connecting rod; 24. Fixed plate; 25. Water inlet pipe; 26. Check valve; 27. Pipe joint. Detailed implementation mode

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention 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 should not be construed as a limitation to the present invention.

[0027] Embodiment 1: Refer to Figures 1-4 , a temperature and pressure reducing device for combined heat and power generation, including a housing 1. On both sides inside the housing 1, a pressure reduction chamber 11 and a temperature reduction chamber 12 are respectively provided, and the pressure reduction chamber 11 communicates with the temperature reduction chamber 12. Pipe joints 27 are symmetrically installed at both ends of the housing 1. A pressure reduction mechanism and a temperature reduction mechanism are respectively arranged inside the pressure reduction chamber 11 and the temperature reduction chamber 12. An inlet water mechanism is arranged above the housing 1. The pressure reduction mechanism includes a pressure reduction plate 13 and a driving rod 18 for pressure reduction. The pressure reduction plates 13 are equidistantly installed on the outside of the driving rod 18. The pressure reduction plate 13 is placed inside the pressure reduction chamber 11, and the pressure reduction plate 13 matches the size of the pressure reduction chamber 11. The temperature reduction mechanism includes a temperature reduction pipe 14 and a driving pipe 19 for temperature reduction. The temperature reduction pipes 14 are equidistantly installed on the outside of the driving pipe 19 from top to bottom. The temperature reduction pipe 14 is placed inside the temperature reduction chamber 12. Atomizing nozzles 141 are equidistantly installed on the outside of the temperature reduction pipe 14. The driving pipe 19 communicates with the temperature reduction pipe 14, and the temperature reduction pipe 14 matches the size of the temperature reduction chamber 12.

[0028] It should be noted that pressure-reducing plates 13 are equidistantly installed on the outer side of the driving rod 18 inside the pressure-reducing chamber 11. The high-pressure steam can push the pressure-reducing plates 13 to rotate inside the pressure-reducing chamber 11 and then be introduced into the temperature-reducing chamber 12. Since the pressure-reducing plates 13 are vertically distributed inside the pressure-reducing chamber 11, when the steam passes through the pressure-reducing chamber 11, the discharge amount of the steam will decrease, increasing its flow rate, thereby reducing the pressure of the steam. A driving pipe 19 is vertically arranged inside the temperature-reducing chamber 12, and temperature-reducing pipes 14 are equidistantly installed on the outer side of the driving pipe 19. The water mist ejected from the atomizing nozzles 141 on the outer side of the temperature-reducing pipes 14 can cool the pressure-reduced steam.

[0029] Embodiment 2: Refer to Figures 1-4 , one ends of the driving rod 18 and the driving pipe 19 above the housing 1 vertically penetrate through the middle parts of the pressure-reducing belt pulley 15 and the temperature-reducing belt pulley 16 respectively and are fixedly connected to the pressure-reducing belt pulley 15 and the temperature-reducing belt pulley 16. The pressure-reducing belt pulley 15 and the temperature-reducing belt pulley 16 are horizontally aligned, and the sizes of the pressure-reducing belt pulley 15 and the temperature-reducing belt pulley 16 are matched. The pressure-reducing belt pulley 15 is drivingly connected to the temperature-reducing belt pulley 16 through a transmission belt 17. Both the driving pipe 19 and the driving pipe 19 are rotatably connected to the housing 1 through sealed bearings.

[0030] It should be noted that while the steam pushes the pressure-reducing plates 13 to rotate, the driving rod 18 can drive the pressure-reducing belt pulley 15 above the housing 1 to rotate. Since the pressure-reducing belt pulley 15 is drivingly connected to the temperature-reducing belt pulley 16 through the transmission belt 17, during the rotation of the pressure-reducing belt pulley 15, it can drive the temperature-reducing belt pulley 16 to rotate, thereby driving the driving pipe 19 and the temperature-reducing pipes 14 to rotate inside the temperature-reducing chamber 12, which can break the original flow state of the steam, thereby improving the mixing efficiency. At the same time, the temperature-reducing water mist ejected from the atomizing nozzles 141 is evenly dispersed inside the temperature-reducing chamber 12, further improving the temperature-reducing effect of the temperature-reducing chamber 12.

[0031] Embodiment 3: Refer to Figures 1-4 , the water inlet mechanism includes a water cylinder 21 for injecting water into the driving pipe 19. One end of the driving pipe 19 close to the pressure-reducing belt pulley 15 is fixedly connected to the middle part of the bottom side of the turntable 2. One end of the driving pipe 19 close to the temperature-reducing belt pulley 16 is rotatably connected to the bottom side of one end of the water cylinder 21 through a sealed bearing, and the water cylinder 21 is communicated with the top end of the driving pipe 19. A piston 22 is slidably connected inside the water cylinder 21. The middle part of the piston 22 on the side close to the turntable 2 is hinged to one end of the upper surface of the turntable 2 through a crank connecting rod 23. The crank connecting rod 23 is matched with the sizes of the water cylinder 21 and the turntable 2. One end of the water cylinder 21 far from the turntable 2 is fixedly connected to the upper surface of the housing 1 through a vertical fixing plate 24. A water inlet pipe 25 is horizontally and fixedly installed at one end of the water cylinder 21 far from the turntable 2.

[0032] It should be noted that while the steam drives the pressure relief plate 13 to rotate, the drive tube 19 can drive the turntable 2 to rotate above the housing 1. Since the two ends of the crank connecting rod 23 are respectively hinged to one end of the upper surface of the turntable 2 and the middle part on one side of the piston 22, during the rotation of the turntable 2, the piston 22 can be driven to reciprocate left and right in the water cylinder 21. When the crank connecting rod 23 pushes the piston 22 to move left in the water cylinder 21, the cooling water in the corresponding water tank can be pumped into the water cylinder 21 through the water inlet pipe 25 on the side of the water cylinder 21 away from the turntable 2 (the water inlet end of the water inlet pipe 25 is communicated with the bottom end inside the corresponding water tank). When the crank connecting rod 23 pushes the piston 22 to move right in the water cylinder 21, the water pressure in the water cylinder 21 can be pressed into the drive tube 19 and then sprayed out through the atomizing nozzle 141 communicated with the cooling tube 14 on the outside of the drive tube 19. Moreover, the greater the pressure of the steam, the faster the steam drives the pressure relief plate 13 to rotate, the faster the pressure relief pulley 15 at the upper end of the drive tube 19 and the turntable 2 rotate, so that the rotation speed of the cooling tube 14 on the outside of the drive rod 18 is faster, and the movement speed of the piston 22 is faster. Further, the more water mist is sprayed out by the atomizing nozzle 141, which can be automatically adjusted according to the pressure of the steam, without the use of electrical components and with high use accuracy.

[0033] The water outlet end of the water inlet pipe 25 is communicated with the water cylinder 21, and one-way valves 26 are arranged inside the water inlet pipe 25 and the upper end of the drive tube 19.

[0034] By arranging one-way valves 26 inside both the water inlet pipe 25 and the drive tube 19, the flow direction of the cooling water inside the water inlet pipe 25 and the drive tube 19 can be automatically controlled. When the piston 22 moves left in the water cylinder 21, the water in the water inlet pipe 25 can only flow into the water cylinder 21. When the piston 22 moves right in the water cylinder 21, the water in the water cylinder 21 can only flow into the cooling tube 14, thus automatically realizing the replenishment of the cooling water inside the water cylinder 21.

[0035] Working principle: The pipe joints 27 on both sides of the shell 1 are connected to the corresponding conveying pipelines, and the steam that needs to be reduced in pressure and temperature is introduced into the decompression chamber 11 on one side of the shell 1. The driving rod 18 is connected to the decompression chamber 11 through rotation. The high-pressure steam can push the decompression plate 13 installed equidistantly outside the driving rod 18 to rotate in the decompression chamber 11, and then be introduced into the temperature reduction chamber 12. Since the decompression plate 13 is vertically placed inside the decompression chamber 11, the steam discharge will decrease when passing through the decompression chamber 11, so that its flow rate will increase, thereby reducing the pressure of the steam. When the steam pushes the decompression plate When the crank connecting rod 23 is rotated, the driving pipe 19 can drive the turntable 2 to rotate above the housing 1. Since the two ends of the crank connecting rod 23 are respectively hinged with one end of the upper surface of the turntable 2 and the middle part of one side of the piston 22, the turntable 2 can drive the piston 22 to move back and forth in the water cylinder 21 during rotation. When the crank connecting rod 23 pushes the piston 22 to move left in the water cylinder 21, the cooling water in the corresponding water tank can be pumped into the water cylinder 21 through the water inlet pipe 25 on the side of the water cylinder 21 away from the turntable 2. When the crank connecting rod 23 pushes the piston 22 to move right in the water cylinder 21, the cooling water in the corresponding water tank can be pumped into the water cylinder 21. The water in the water cylinder 21 is pressed into the driving tube 19, and then sprayed out through the atomizing nozzle 141 connected to the cooling tube 14 outside the driving tube 19, so as to cool the decompressed steam. At the same time, the driving rod 18 can drive the decompression pulley 15 above the shell 1 to rotate. Since the decompression pulley 15 is connected to the cooling pulley 16 through the transmission belt 17, the cooling pulley 16 can be driven to rotate during the rotation of the decompression pulley 15, thereby driving the driving tube 19 and the cooling tube 14 to rotate in the cooling chamber 12, which can break the original flow state of the steam and then The mixing efficiency is improved, and the cooling water mist sprayed by the atomizing nozzle 141 is evenly dispersed in the cooling chamber 12, further improving the cooling effect of the cooling chamber 12. Moreover, the greater the steam pressure, the faster the steam drives the pressure reducing plate 13 to rotate, so that the pressure reducing pulley 15 and the turntable 2 at the upper end of the driving tube 19 rotate faster, thereby making the rotation speed of the cooling tube 14 outside the driving rod 18 faster, and the movement speed of the piston 22 faster, and further the more water mist sprayed by the atomizing nozzle 141. It can be automatically adjusted according to the steam pressure, does not need to use electrical components, and has high accuracy.

[0036] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For a person skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be construed as limiting the claims concerned.

[0037] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A desuperheater and pressure reducer for cogeneration, comprising a housing (1), characterized in that: A decompression chamber (11) and a temperature reduction chamber (12) are respectively provided on both sides of the shell (1), and a decompression mechanism and a temperature reduction mechanism are respectively provided inside the decompression chamber (11) and the temperature reduction chamber (12), the decompression mechanism comprising a decompression plate (13) and a driving rod (18) for decompression, the temperature reduction mechanism comprising a temperature reduction pipe (14) and a driving pipe (19) for temperature reduction, and atomizing nozzles (141) are equidistantly installed on the outside of the temperature reduction pipe (14), and a water inlet mechanism is provided above the shell (1), the water inlet mechanism comprising a water cylinder (21) and a rotating disk (2) for injecting water into the driving pipe (19).

2. The desuperheating and pressure reducing device for combined heat and power generation according to claim 1, characterized in that: The pressure reducing plates (13) are equidistantly installed on the outside of the driving rod (18), the pressure reducing plates (13) are placed on the inside of the pressure reducing chamber (11), the temperature reducing pipes (14) are equidistantly installed on the outside of the driving pipe (19) from top to bottom, and the temperature reducing pipes (14) are placed on the inside of the temperature reducing chamber (12).

3. A desuperheater and pressure reducer for cogeneration according to claim 2, characterized in that: The driving rod (18) and the driving tube (19) are placed at one end above the housing (1) and vertically penetrate the middle of the decompression pulley (15) and the cooling pulley (16) respectively and are fixedly connected to the decompression pulley (15) and the cooling pulley (16); the decompression pulley (15) and the cooling pulley (16) are horizontally aligned, and the sizes of the decompression pulley (15) and the cooling pulley (16) match each other; the decompression pulley (15) is transmission-connected to the cooling pulley (16) via a transmission belt (17); and the driving tube (19) and the driving tube (19) are both rotationally connected to the housing (1) via a sealed bearing.

4. A desuperheater and pressure reducer for cogeneration according to claim 3, characterized in that: One end of the driving tube (19) close to the pressure reducing pulley (15) is fixedly connected to the middle part of the bottom side of the rotating disk (2); one end of the driving tube (19) close to the temperature reducing pulley (16) is rotatably connected to the bottom side of one end of the water cylinder (21) through a sealed bearing; a piston (22) is slidably connected inside the water cylinder (21); the middle part of the piston (22) close to the rotating disk (2) is hinged to one end of the upper surface of the rotating disk (2) through a crank connecting rod (23); the crank connecting rod (23) matches the size of the water cylinder (21) and the rotating disk (2).

5. A desuperheating and pressure reducing device for cogeneration according to claim 4, characterized in that: The driving pipe (19) is in communication with the cooling pipe (14), and the water cylinder (21) is in communication with the top end of the driving pipe (19).

6. The desuperheating and pressure reducing device for cogeneration according to claim 5, characterized in that: The end of the water cylinder (21) away from the turntable (2) is fixedly connected to the upper surface of the housing (1) via a vertical fixing plate (24), and the end of the water cylinder (21) away from the turntable (2) is horizontally fixedly mounted with a water inlet pipe (25).

7. A desuperheater and pressure reducer for cogeneration according to claim 6, characterized in that: The water outlet end of the water inlet pipe (25) is in communication with the water cylinder (21), and a one-way valve (26) is provided inside the water inlet pipe (25) and the upper end of the drive pipe (19).

8. A desuperheating and pressure reducing device for cogeneration according to claim 1, characterized in that: The decompression chamber (11) is in communication with the temperature reduction chamber (12), and pipe joints (27) are symmetrically mounted at both ends of the shell (1).

9. A desuperheater and pressure reducer for cogeneration according to claim 1, characterized in that: The size of the pressure reducing plate (13) matches that of the pressure reducing chamber (11), and the size of the temperature reducing pipe (14) matches that of the temperature reducing chamber (12).

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