Temperature and pressure reducer for combined heat and power generation

Abstract

The invention relates to the technical field of temperature and pressure reducers, in particular to a temperature and pressure reducer for combined heat and power generation, which comprises a delivery pipe, a pressure reduction steam valve, a temperature reduction mechanism, an adjusting mechanism and a filtering mechanism, the pressure reduction steam valve is fixedly mounted at the output end of the delivery pipe, and the pressure reduction steam valve is used for reducing pressure of steam in the delivery pipe; the temperature reduction mechanism is fixedly installed at the output end of the pressure reduction steam valve and used for spraying temperature reduction water to steam subjected to pressure reduction through the pressure reduction steam valve for temperature reduction, and the adjusting mechanism is fixedly installed in the temperature reduction mechanism and used for adjusting the temperature reduction water spraying angle of the temperature reduction mechanism. According to the temperature and pressure reducer for combined heat and power generation, by arranging the temperature reducing mechanism, the adjusting mechanism, the extruding mechanism and the filtering mechanism, the annular pipe can be driven to swing in a reciprocating mode, so that temperature reducing water in the annular pipe can be sprayed into steam from the nozzles at different angles to form crossed mixed flow, the original flowing state of the steam can be broken, and then the mixing efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of temperature and pressure reducing devices, and in particular to a temperature and pressure reducing device for cogeneration of heat and power. Background Art

[0002] Cogeneration is a way of using heat energy generated by fuel combustion for both power generation and heating. In a cogeneration system, fuel is burned in a boiler or other heat generator to generate high-temperature and high-pressure steam. The steam first enters the steam turbine, driving the turbine blades to rotate, thereby driving the generator to generate electricity. The temperature and pressure of the steam that has done work in the steam turbine are still high. At this time, the steam can be transferred to users who need heating through equipment such as heat exchangers, such as residential heating systems and industrial plant production heat.

[0003] In the cogeneration system, the temperature and pressure reducer is mainly used to adjust the temperature and pressure of the steam. The temperature and pressure of the steam discharged from the steam turbine may be relatively high. When the steam is used for different purposes such as heating, its parameters need to be adjusted to the appropriate range. When the temperature and pressure reducer is working, it first reduces the pressure of the high-pressure and high-temperature steam through the pressure-reducing steam regulating valve, and then sprays the cooling water into the steam pipe through the cooling water regulating valve and the nozzle to reduce the temperature of the high-temperature steam, thereby achieving the cooling and pressure reduction effect.

[0004] However, considering that when the existing temperature and pressure reducer is in use, the spraying angle of the nozzle is in a conical range, so that the sprayed temperature and pressure reducing device is only distributed within the conical range, which makes the concentration of the temperature and pressure reducing water in the conical range higher, and the mixing with the surrounding gas is mainly concentrated in this narrow conical area, so that the spatial range of the mixing area is limited, resulting in the overall mixing efficiency is not high, thereby reducing the working efficiency and use effect of the temperature and pressure reducing device. Summary of the invention

[0005] The object of the present invention is to provide a temperature and pressure reducing device for cogeneration of heat and power.

[0006] To achieve this object, the present invention adopts the following technical solutions: Provided is a temperature and pressure reducing device for cogeneration of heat and power, comprising a delivery pipe, a pressure reducing steam valve, a temperature reducing mechanism, an adjusting mechanism and a filtering mechanism, wherein the pressure reducing steam valve is fixedly installed at the output end of the delivery pipe, the temperature reducing mechanism is fixedly installed at the output end of the pressure reducing steam valve, the temperature reducing mechanism is used to spray temperature reducing water on the steam after the pressure reducing steam valve has reduced the pressure, the adjusting mechanism is fixedly installed inside the temperature reducing mechanism, the adjusting mechanism is used to adjust the angle at which the temperature reducing mechanism sprays the temperature reducing water, the filtering mechanism is plugged and installed inside the temperature reducing mechanism, the filtering mechanism is used to filter the temperature reducing water in the temperature reducing mechanism.

[0007] Furthermore, the cooling mechanism includes a mixing pipe, a mounting pipe, a cooling water regulating valve, a connecting pipe, a water storage chamber, an annular pipe, a fixed rod and a plurality of atomizing nozzles. The mixing pipe is fixedly mounted on the output end of the pressure reducing steam valve, the mounting pipe is fixedly mounted on the top of the mixing pipe, the connecting pipe and the mounting pipe are connected by a flange, the connecting pipe and the cooling water regulating valve are communicated by a connecting pipe, the water storage chamber is fixedly mounted on the bottom of the flange, the water storage chamber and the annular pipe are communicated by a hose, the fixed rod is fixedly mounted on the bottom of the water storage chamber, the fixed rod and the annular pipe are connected by a cylindrical rod, and the cylindrical rod and the fixed rod are rotatably connected, and the plurality of atomizing nozzles are fixedly mounted on the annular pipe.

[0008] Furthermore, the adjusting mechanism includes a moving rod, a spring, a triangular block, a fixed block and an extrusion mechanism. The top end of the moving rod is connected to the triangular block by a connecting plate, and the moving rod can slide axially along the inner side of the water storage chamber. The spring is used to drive the annular tube to rotate to a horizontal state. The fixed block is fixedly installed on the annular tube. The moving rod drives the annular tube to rotate by sliding along the inner side of the fixed block through a hinged hinge block. The connecting plate and the water storage chamber are connected by a guide rod, and the connecting plate is slidably connected to the guide rod. The extrusion mechanism is fixedly installed in the connecting pipe, and the extrusion mechanism is used to drive the moving rod to move downward.

[0009] Furthermore, the extrusion mechanism includes an L-shaped rod and a cross round block, the connecting pipe fixes the L-shaped rod inside the connecting pipe through a fixing plate, and the L-shaped rod is rotatably connected to the fixing plate, and the cross round block is fixedly installed on the top of the L-shaped rod.

[0010] Furthermore, the filtering mechanism includes a filter cartridge, a shell, an impeller, a sleeve and a stirring rod. The filter cartridge is connected to the impeller by a rotating shaft, and the filter cartridge is plugged into a connecting pipe. The impeller is rotationally connected to the inner side of the shell, and the shell is plugged into the connecting pipe. The sleeve is fixedly installed at the bottom of the shell, and the sleeve is rotationally connected to the rotating shaft, and the stirring rod is fixedly installed on the sleeve.

[0011] Furthermore, the top of the shell is connected to the top of the connecting pipe through a flange, a cross circular groove is provided at the bottom of the filter cartridge, the cross circular groove is plugged into the cross circular block, a water inlet is provided on the shell, and a water outlet is provided at the bottom of the shell.

[0012] The beneficial effects of the present invention are as follows: the cooling and pressure reducing device for cogeneration of heat and power, through the cooling mechanism, regulating mechanism, squeezing mechanism and filtering mechanism, enables the cooling water to drive the L-shaped rod to rotate when impacting the impeller, so that the moving rod can move back and forth vertically, thereby driving the annular tube to swing back and forth, so that the cooling water in the annular tube can be sprayed into the steam from nozzles at different angles to form a cross-mixed flow, which can break the original flow state of the steam and thus improve the mixing efficiency. At the same time, the cooling water can be effectively filtered through the filter cartridge in the filtering mechanism to intercept the impurity particles in the cooling water to avoid clogging the nozzle on the annular tube, and the filter mechanism connected by the flange is convenient for the staff to take out and clean it. In addition, the impeller arranged in the filtering mechanism will drive the filter cartridge to rotate when impacted by the cooling water, thereby enabling the stirring rod to stir the cooling water and impurity particles in the filter cartridge to avoid precipitation and clogging of the filter cartridge by the impurity particles, thereby improving the service life and use effect of the cooling and pressure reducing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the embodiments of the present invention are briefly introduced below.

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the main structure of the cooling mechanism of the present invention; Figure 3 This is a schematic diagram of the main structure of the connecting pipe of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the connecting pipe and the water storage chamber of the present invention; Figure 5 It is a schematic diagram of the front view structure of the extrusion mechanism of the present invention; Figure 6 For the present invention Figure 3 The enlarged structural diagram of part A in the middle; Figure 7 It is a schematic diagram of the split structure of the filtering mechanism of the present invention; Figure 8 It is a schematic diagram of the separation structure of the filter cartridge and the L-shaped rod of the present invention; Fig. 9 It is a schematic diagram of the main structure of the shell of the present invention.

[0015] In the figure: 1. delivery pipe; 2. pressure reducing steam valve; 3. cooling mechanism; 31. mixing pipe; 32. mounting pipe; 33. cooling water regulating valve; 34. connecting pipe; 35. connecting pipe; 36. water storage chamber; 37. hose; 38. annular pipe; 39. cylindrical rod; 310. fixed rod; 311. atomizing nozzle; 4. adjusting mechanism; 41. moving rod; 42. spring; 43. guide rod; 44. connecting plate; 45. triangular block; 46. hinge block; 47. fixed block; 48. extrusion mechanism; 481. L-shaped rod; 482. fixing plate; 483. cross round block; 484. cross round groove; 5. filtering mechanism; 51. filter cartridge; 52. housing; 53. impeller; 54. rotating shaft; 55. sleeve; 56. stirring rod; 57. water inlet; 58. water outlet. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0017] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product.

[0018] Reference Figure 1 to Figure 2 The desuperheater and pressure reducer for cogeneration of heat and power shown in the figure comprises a delivery pipe 1, a desuperheating steam valve 2, a desuperheating mechanism 3, an adjusting mechanism 4 and a filtering mechanism 5. The desuperheating steam valve 2 is fixedly installed at the output end of the delivery pipe 1. The desuperheating steam valve 2 is used to desuperheat the steam in the delivery pipe 1. The desuperheating mechanism 3 is fixedly installed at the output end of the desuperheating steam valve 2. The desuperheating mechanism 3 is used to spray desuperheating water on the steam after desuperheating by the desuperheating steam valve 2. Through the desuperheating steam valve 2 and the desuperheating mechanism 3, the high-pressure and high-temperature steam in the delivery pipe 1 can be converted into steam suitable for users, thereby realizing cogeneration of heat and power. The adjusting mechanism 4 is fixedly installed inside the desuperheating mechanism 3. The adjusting mechanism 4 is used to adjust the angle at which the desuperheating mechanism 3 sprays desuperheating water, so that the desuperheating water can be sprayed into the steam from different angles to form a cross mixed flow, thereby improving the mixing efficiency. At the same time, the desuperheating water sprayed obliquely can cut into the steam flow from the side, thereby generating an oblique impact force, thereby causing the steam to rotate and flow turbulently, thereby accelerating the desuperheating process. The filter mechanism 5 is plugged and installed inside the cooling mechanism 3. The filter mechanism 5 is used to filter the cooling water in the cooling mechanism 3. The filter mechanism 5 intercepts foreign particles in the cooling water to prevent the foreign particles from clogging the atomizing nozzle 311 on the annular tube 38.

[0019] Reference Figures 2 to 4The cooling mechanism 3 includes a mixing pipe 31, a mounting pipe 32, a cooling water regulating valve 33, a connecting pipe 35, a water storage chamber 36, an annular pipe 38, a fixing rod 310 and a plurality of atomizing nozzles 311. The mixing pipe 31 is fixedly mounted at the output end of the pressure reducing steam valve 2. When the steam in the pressure reducing steam valve 2 is reduced in pressure, it flows into the mixing pipe 31 for cooling. The mounting pipe 32 is fixedly mounted at the top of the mixing pipe 31. The connecting pipe 35 and the mounting pipe 32 are connected by a flange. The connecting pipe 35 and the cooling water regulating valve 33 are connected by a connecting pipe 34. The cooling water is transported from the cooling water regulating valve 33 to the connecting pipe 35 through the connecting pipe 34. The water storage chamber 36 is fixedly mounted at the bottom of the flange. The cooling water flowing into the connecting pipe 35 will be stored in the water storage chamber 36. The water storage chamber 36 and the annular pipe 38 are connected by a hose 37. The cooling water in the water storage chamber 36 is transported to the annular pipe 38 through the hose 37. The fixing rod 310 is fixedly installed at the bottom of the water storage chamber 36, and the fixing rod 310 supports the annular tube 38. The fixing rod 310 and the annular tube 38 are connected by a cylindrical rod 39, and the cylindrical rod 39 is rotatably connected to the fixing rod 310. The annular tube 38 can rotate through the rotation effect of the cylindrical rod 39. Multiple atomizing nozzles 311 are fixedly installed on the annular tube 38, and multiple atomizing nozzles 311 are distributed in an annular array on the annular tube 38, and can spray the cooling water in the annular tube 38 in an atomized state.

[0020] Reference Figures 4 to 6The adjusting mechanism 4 includes a moving rod 41, a spring 42, a triangular block 45, a fixed block 47 and an extrusion mechanism 48. The top of the moving rod 41 is connected to the triangular block 45 by a connecting plate 44, and the moving rod 41 can slide axially along the inner side of the water storage chamber 36. By squeezing the triangular block 45, the triangular block 45 can drive the connecting plate 44 and the moving rod 41 to move downward, driving the annular tube 38 to swing downward. Through the moving effect of the moving rod 41, the hinge block 46 can be driven to slide along the inner wall of the fixed block 47. The spring 42 is used to drive the annular tube 38 to rotate to a horizontal state. Through the elastic force of the spring 42, the connecting plate 44 always keeps moving upward without being affected by external force, thereby driving the moving rod 41 to move upward and driving the annular tube 38 to swing upward. The fixed block 47 is fixedly installed on the annular tube 38, and the moving rod 41 drives the annular tube 38 to rotate by sliding along the inner side of the fixed block 47 through the hinged hinge block 46. The reciprocating vertical movement of the moving rod 41 can drive the hinge block 46 to move back and forth inside the fixed block 47, thereby driving the annular tube 38 to swing back and forth. The connecting plate 44 is connected to the water storage chamber 36 through the guide rod 43, and the connecting plate 44 is slidably connected to the guide rod 43. The guide rod 43 guides the connecting plate 44 to prevent the connecting plate 44 from shifting when moving. The squeezing mechanism 48 is fixedly installed in the connecting tube 35. The squeezing mechanism 48 is used to drive the moving rod 41 to move downward, and the triangular block 45 is reciprocally squeezed by the squeezing mechanism 48. At the same time, the resetting effect of the moving rod 41 can be achieved through the reset effect of the spring 42.

[0021] Reference Figure 5 and Figure 8 The extrusion mechanism 48 includes an L-shaped rod 481 and a cross round block 483. The connecting tube 35 fixes the L-shaped rod 481 inside the connecting tube 35 through a fixing plate 482, and the L-shaped rod 481 is rotatably connected to the fixing plate 482. The fixing plate 482 supports the L-shaped rod 481 to prevent the L-shaped rod 481 from falling off. The rotation effect of the L-shaped rod 481 allows the L-shaped rod 481 to contact the triangular block 45, thereby squeezing the triangular block 45. The cross round block 483 is fixedly installed on the top of the L-shaped rod 481.

[0022] Reference Figure 4 and Figure 7The filter mechanism 5 includes a filter cartridge 51, a housing 52, an impeller 53, a sleeve 55 and a stirring rod 56. The filter cartridge 51 and the impeller 53 are connected by a rotating shaft 54, and the filter cartridge 51 is plugged into the connecting pipe 35. The rotating effect of the impeller 53 can drive the rotating shaft 54 ​​to rotate, and then drive the filter cartridge 51 to rotate, and the cooling water in the connecting pipe 35 is filtered by the filter cartridge 51. The impeller 53 is rotatably connected to the inner side of the housing 52, and the housing 52 is connected to the connecting pipe 35. 5, when the cooling water enters the housing 52, it will impact the blades of the impeller 53, thereby causing the impeller 53 to rotate. The sleeve 55 is fixedly installed at the bottom of the housing 52, and the sleeve 55 is rotatably connected to the rotating shaft 54. The stirring rod 56 is fixedly installed on the sleeve 55. When the rotating shaft 54 ​​drives the filter cartridge 51 to rotate, the stirring rod 56 arranged on the sleeve 55 will continuously stir the cooling water in the filter cartridge 51 to prevent the impurity particles in the filter cartridge 51 from being precipitated and clogging the filter cartridge 51.

[0023] Reference Figure 4 , Figure 8 and Fig. 9 The top of the shell 52 is connected to the top of the connecting pipe 35 by a flange. Since the shell 52 and the connecting pipe 35 are connected by a flange, and the flange is fixed by bolts, the staff can assemble and disassemble the shell 52 by screwing the bolts, so as to facilitate the cleaning of the filter cartridge 51. A cross circular groove 484 is provided at the bottom of the filter cartridge 51, and the cross circular groove 484 is plugged with the cross circular block 483. When the filter cartridge 51 is plugged into the connecting pipe 35, the cross circular groove 484 is driven to be plugged with the cross circular block 483, so that when the filter cartridge 51 rotates, the cross circular block 483 and the L-shaped rod 481 can be driven to rotate. A water inlet 57 is provided on the shell 52, and a water outlet 58 is provided at the bottom of the shell 52. When the shell 52 is installed, the water inlet 57 of the shell 52 is aligned with the water outlet end position of the connecting pipe 34, so that the water transported to the connecting pipe 35 by the connecting pipe 34 will first enter the shell 52.

[0024] The temperature reducing and pressure reducing device for cogeneration of heat and power, through the provided temperature reducing mechanism, regulating mechanism, squeezing mechanism and filtering mechanism, enables the temperature reducing water to drive the L-shaped rod to rotate when impacting the impeller, so that the moving rod performs reciprocating vertical movement, thereby driving the annular tube to swing back and forth, so that the temperature reducing water in the annular tube can be sprayed into the steam from nozzles at different angles, forming a cross-mixed flow, which can break the original flow state of the steam, thereby improving the mixing efficiency. At the same time, the temperature reducing water can be effectively filtered through the filter cartridge in the filtering mechanism, and the impurity particles in the temperature reducing water can be intercepted to avoid clogging the nozzle on the annular tube. The filter mechanism connected by the flange is convenient for the staff to take out for cleaning. In addition, the impeller provided in the filtering mechanism will drive the filter cartridge to rotate when impacted by the temperature reducing water, thereby enabling the stirring rod to stir the temperature reducing water and impurity particles in the filter cartridge, thereby avoiding the impurity particles from precipitating and clogging the filter cartridge, thereby improving the service life and use effect of the temperature reducing and pressure reducing device.

[0025] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A temperature and pressure reducing device for cogeneration of heat and power, characterized in that: The invention comprises a delivery pipe (1), a pressure reducing steam valve (2), a cooling mechanism (3), an adjusting mechanism (4) and a filtering mechanism (5), wherein the pressure reducing steam valve (2) is fixedly mounted on the output end of the delivery pipe (1), and the pressure reducing steam valve (2) is used to reduce the pressure of the steam in the delivery pipe (1); the cooling mechanism (3) is fixedly mounted on the output end of the pressure reducing steam valve (2), and the cooling mechanism (3) is used to spray cooling water on the steam after the pressure reduction of the pressure reducing steam valve (2); the adjusting mechanism (4) is fixedly mounted inside the cooling mechanism (3), and the adjusting mechanism (4) is used to adjust the angle at which the cooling mechanism (3) sprays cooling water; the filtering mechanism (5) is plugged and mounted inside the cooling mechanism (3), and the filtering mechanism (5) is used to filter the cooling water in the cooling mechanism (3).

2. A temperature and pressure reducing device for cogeneration of heat and power according to claim 1, characterized in that: The cooling mechanism (3) comprises a mixing pipe (31), a mounting pipe (32), a cooling water regulating valve (33), a connecting pipe (35), a water storage chamber (36), a ring pipe (38), a fixing rod (310) and a plurality of atomizing nozzles (311); the mixing pipe (31) is fixedly mounted on the output end of the pressure reducing steam valve (2); the mounting pipe (32) is fixedly mounted on the top of the mixing pipe (31); the connecting pipe (35) and the mounting pipe (32) are connected via a flange; the connecting pipe (35) and the cooling water regulating valve (33) are connected via a flange. The throttle valves (33) are connected via a connecting pipe (34); the water storage chamber (36) is fixedly mounted on the bottom of the flange; the water storage chamber (36) and the annular tube (38) are connected via a hose (37); the fixing rod (310) is fixedly mounted on the bottom of the water storage chamber (36); the fixing rod (310) and the annular tube (38) are connected via a cylindrical rod (39); the cylindrical rod (39) and the fixing rod (310) are rotatably connected; and the plurality of atomizing nozzles (311) are fixedly mounted on the annular tube (38).

3. A temperature and pressure reducing device for cogeneration of heat and power according to claim 1, characterized in that: The regulating mechanism (4) comprises a moving rod (41), a spring (42), a triangular block (45), a fixed block (47) and a squeezing mechanism (48). The top end of the moving rod (41) is connected to the triangular block (45) via a connecting plate (44), and the moving rod (41) can slide axially along the inner side of the water storage chamber (36). The spring (42) is used to drive the annular tube (38) to rotate to a horizontal state. The fixed block (47) is fixedly mounted on the annular tube (38). The moving rod (41) drives the annular tube (38) to rotate by sliding along the inner side of the fixed block (47) through a hinged hinge block (46). The connecting plate (44) is connected to the water storage chamber (36) via a guide rod (43), and the connecting plate (44) is slidably connected to the guide rod (43). The squeezing mechanism (48) is fixedly mounted in the connecting tube (35), and the squeezing mechanism (48) is used to drive the moving rod (41) to move downward.

4. A temperature and pressure reducing device for cogeneration of heat and power according to claim 3, characterized in that: The extrusion mechanism (48) comprises an L-shaped rod (481) and a cross round block (483); the connecting tube (35) fixes the L-shaped rod (481) inside the connecting tube (35) via a fixing plate (482); the L-shaped rod (481) is rotatably connected to the fixing plate (482); and the cross round block (483) is fixedly mounted on the top of the L-shaped rod (481).

5. A temperature and pressure reducing device for cogeneration of heat and power according to claim 1, characterized in that: The filtering mechanism (5) comprises a filter cartridge (51), a housing (52), an impeller (53), a sleeve (55) and a stirring rod (56); the filter cartridge (51) and the impeller (53) are connected via a rotating shaft (54), the filter cartridge (51) and the connecting pipe (35) are plugged in, the impeller (53) is rotationally connected to the inner side of the housing (52), the housing (52) and the connecting pipe (35) are plugged in, the sleeve (55) is fixedly mounted on the bottom of the housing (52), the sleeve (55) is rotationally connected to the rotating shaft (54), and the stirring rod (56) is fixedly mounted on the sleeve (55).

6. A temperature and pressure reducing device for cogeneration of heat and power according to claim 5, characterized in that: The top of the shell (52) is connected to the top of the connecting pipe (35) via a flange, the bottom of the filter cartridge (51) is provided with a cross circular groove (484), the cross circular groove (484) is plugged into the cross circular block (483), the shell (52) is provided with a water inlet (57), and the bottom of the shell (52) is provided with a water outlet (58).

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