A steam turbine residual steam auxiliary condensation device

Abstract

The present invention relates to the technical field of steam turbines, and in particular to a residual steam auxiliary condensation device for a steam turbine, comprising: a shell connected to a steam inlet pipe and a tail gas pipe; a cooling unit is installed above the shell, and the cooling unit forms at least one cooling area above the shell; wherein a heat dissipation unit is also connected above the shell, and the heat dissipation unit is used to cool the cooling unit. In the present invention, the residual steam of the steam turbine is reused, and the movement of a driving unit is controlled by this part of the steam, and the driving unit realizes the movement control of the heat dissipation unit. When the steam passes through the shell and enters the interior of the circulation box from the tail gas pipe, the high-temperature gas is cooled by the cooling unit. Since the power of the heat dissipation unit is also provided by the residual steam, the cooling unit is cooled by means of the heat dissipation unit, so that when the residual steam passes through this device, it can be condensed and cooled.

Description

Technical Field

[0001] The invention relates to the technical field of steam turbines, and in particular to a residual steam auxiliary condensation device for a steam turbine. Background Art

[0002] A steam turbine is a thermal machine that generates high-temperature and high-pressure steam by burning fuel, and then uses the steam pressure to drive the impeller to rotate, thereby generating mechanical energy. This mechanical energy can be used to drive a generator to generate electricity, or it can be directly used to drive various industrial machinery. Steam turbines are widely used in the power industry, shipbuilding, aviation, and petrochemical industries. It has the advantages of high efficiency, high power, and low pollution, and is a very important power machine in modern industry. However, in this process, the steam turbine will inevitably produce a large amount of residual steam.

[0003] These residual steam usually carry high temperature and pressure energy. During the operation of traditional steam turbines, these residual steam are often discharged directly into the atmosphere. This practice not only causes a huge waste of energy, but the heat in the residual steam directly enters the atmosphere, increasing the greenhouse gas content in the atmosphere, thereby aggravating the problem of global greenhouse effect.

[0004] Therefore, how to effectively recover and utilize the heat energy in the residual steam of the steam turbine while ensuring the low temperature and environmental protection of the exhaust gas has become an urgent problem to be solved in the design and operation of the steam turbine. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that the heat in the residual steam directly enters the atmosphere, resulting in a huge waste of energy and increasing the greenhouse gas content in the atmosphere, and to propose a turbine residual steam auxiliary condensation device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] Design a steam turbine residual steam auxiliary condensation device, including:

[0008] A shell connected with a steam inlet pipe and an exhaust pipe;

[0009] A cooling unit is installed above the shell, and the cooling unit forms at least one cooling area above the shell;

[0010] A heat dissipation unit is also connected above the shell, and the heat dissipation unit is used to cool the cooling unit. A starting unit and a driving unit are installed inside the shell, and both the starting unit and the driving unit are connected to the heat dissipation unit. The driving unit is used to drive the heat dissipation unit to move continuously.

[0011] Further, the cooling unit includes a tubular radiator mounted on the shell and a circulation box connected to one side of the shell;

[0012] The circulation box circulates with the tubular radiator through a pipeline, and at least one cooling box is connected to the pipeline. The cooling box is attached to the top of the shell and forms the cooling area. A one-way valve is provided inside the pipeline of the circulation box close to the cooling box.

[0013] Furthermore, the heat dissipation unit includes a bracket fixedly connected to the shell, a crankshaft is rotatably connected to the side of the bracket, the crankshaft has two staggered connecting rod shaft diameters, a fan is fixedly connected to the rear end of the crankshaft, and a flywheel is provided on the outer side of the fan.

[0014] Furthermore, the starting unit includes a rod movably plugged into the housing, the bottom of the rod is fixedly connected to a piston 1, wherein the top of the rod is pinned to a connecting rod 1, and the top end of the connecting rod 1 is pinned to the axial diameter of the connecting rod.

[0015] Furthermore, the shell has a conical cavity with a gradually decreasing diameter from top to bottom, and a straight opening is opened on one side of the shell close to the steam inlet pipe, and the straight opening is sealed when the piston moves down;

[0016] Two stop plates are fixedly installed at the bottom of the rod, and the piston 1 is located between the two stop plates. When the upper stop plate contacts the inner top of the shell, the piston 1 and the inner top of the shell form a steam flow channel.

[0017] Furthermore, the driving unit includes an extension tube fixedly mounted on the housing, a second piston is movably inserted inside the extension tube, a second connecting rod is pinned to the top of the second piston, and the other end of the second connecting rod is pinned to the other connecting rod axial diameter portion.

[0018] Furthermore, a plurality of guide rods are movably inserted above the extension tube, and an adjustment ring is fixedly connected between the tops of the plurality of guide rods;

[0019] A spring is arranged between the adjusting ring and the opposite surface of the second piston, and an adjusting component for driving the adjusting ring to move up and down is also arranged above the shell.

[0020] Furthermore, both ends of the shell are provided with connecting pipes, and the two connecting pipes are respectively connected to the steam inlet pipe and the tail gas pipe through flange structures.

[0021] Furthermore, the adjustment component includes a valve plate rotatably connected to the inside of a connecting pipe near the exhaust pipe through a torsion spring, the rotating shaft of the valve plate passes through the shell and extends upward, wherein an eccentric block is fixedly connected to the top of the rotating shaft, a connecting rod three is pinned on the top of the eccentric block, and a sleeve is pinned on the tail end of the connecting rod three, and the sleeve is sleeved on the outside of the adjustment ring and threadedly connected.

[0022] Furthermore, a one-way valve plate is provided inside the connecting pipe close to the tail gas pipe, and the one-way valve plate is connected to one side of the tail gas pipe.

[0023] The present invention proposes a steam turbine residual steam auxiliary condensation device, which has the beneficial effect that: in the present invention, the residual steam of the steam turbine is reused, and the movement of the driving unit is controlled by this part of the steam, and the driving unit realizes the movement control of the heat dissipation unit. When the steam passes through the shell and enters the interior of the circulation box from the tail pipe, the high-temperature gas is cooled by the cooling unit. Since the power of the heat dissipation unit is also provided by the residual steam, the cooling unit is cooled with the help of the heat dissipation unit. In this way, when the residual steam passes through this device, it can be condensed and cooled to achieve full utilization of this part of the steam and ensure the low temperature and environmental protection of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A perspective view of the present invention;

[0025] Figure 2 It is a schematic diagram of the cooling unit structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the starting unit of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of a piston of the present invention;

[0028] Figure 5 The driving unit structure of the present invention is schematically shown in FIG. Figure 1 ;

[0029] Figure 6 The driving unit structure of the present invention is schematically shown in FIG. Figure 2 ;

[0030] Figure 7 It is a schematic diagram of the structure of the regulating component of the present invention;

[0031] Figure 8 It is an exploded view of the adjustment component of the present invention.

[0032] In the figure: 1. shell; 11. steam inlet pipe; 12. exhaust pipe; 13. conical cavity; 14. straight port; 15. connecting pipe; 2. cooling unit; 21. tubular radiator; 22. circulation box; 23. pipeline; 24. cooling box; 3. heat dissipation unit; 31. bracket; 32. crankshaft; 33. fan; 34. flywheel; 4. starting unit; 41. rod; 42. piston one; 43. connecting rod one; 44. stop plate; 5. driving unit; 51. extension pipe; 52. one-way valve plate; 53. piston two; 54. connecting rod two; 55. guide rod; 56. adjusting ring; 57. spring; 58. adjusting assembly; 581. valve plate; 582. rotating shaft; 583. eccentric block; 584. connecting rod three; 585. sleeve. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] Reference Figure 1-8 An embodiment of the present invention discloses a residual steam auxiliary condensation device for a steam turbine, which is used to reuse the residual steam of the steam turbine and achieve a sufficient condensation effect. Specifically, the device includes a shell 1 connected to a steam inlet pipe 11 and a tail gas pipe 12;

[0035] A cooling unit 2 is installed above the shell 1. The cooling unit 2 forms at least one cooling area above the shell 1. Of course, the cooling unit 2 can also be connected to other heat-generating components to cool other heat sources inside the steam turbine, so as to achieve full utilization of steam.

[0036] A heat dissipation unit 3 is also connected above the shell 1, and the heat dissipation unit 3 is used to cool the cooling unit 2. A starting unit 4 and a driving unit 5 are installed inside the shell 1, and the starting unit 4 and the driving unit 5 are both connected to the heat dissipation unit 3, and the driving unit 5 is used to drive the heat dissipation unit 3 to move continuously.

[0037] Reference Figure 2 In some embodiments, the cooling unit 2 in the present invention includes a tubular radiator 21 mounted on the housing 1 and a circulation box 22 connected to one side of the housing 1;

[0038] The circulation box 22 circulates gas through the pipe 23 with the tubular radiator 21. At least one cooling box 24 is connected to the pipe 23. The cooling box 24 is attached to the upper part of the shell 1 and forms the cooling area. A one-way valve is arranged inside the pipe 23 of the circulation box 22 close to the cooling box 24. The one-way valve can only be conducted toward the inside of the circulation box 22 to prevent the exhaust gas from entering the cooling box 24 when being discharged. In this way, it is ensured that only the gas in the cooling box 24 can flow into the cooling box 24 in one direction, ensuring that the exhausted exhaust gas is in a low temperature state. Of course, the tail end of the pipe 23 can also be directly connected to the exhaust pipe 12 to directly discharge the cooled exhaust gas to ensure the environmental protection of the exhausted exhaust gas.

[0039] During specific operation, the high-temperature residual exhaust gas enters the interior of the shell 1 for preliminary cooling, and then is discharged through the exhaust pipe 12. During the discharge process, the gas will enter the interior of the circulation box 22 and be sent out along the pipe 23. The gas first enters the interior of the tubular radiator 21 along the pipe 23, and is cooled by the heat dissipation unit 3 so that the steam can condense quickly. The condensed gas continues to flow forward until it flows into the interior of the cooling box 24, thereby achieving preliminary cooling of the shell 1. The cooling box 24 is designed to increase the contact area with the shell 1, so as to facilitate the condensation of the high-temperature steam on the upper side of the shell 1 in subsequent work. Preferably, the cooling boxes 24 described in this embodiment are provided with two, and are symmetrically distributed above the shell 1. The gas in the cooling box 24 continues to flow back to the circulation box 22, thus forming a reciprocating circulating cooling gas path.

[0040] Reference Figure 2 It should be noted that both ends of the shell 1 in this embodiment have connecting pipes 15, and the two connecting pipes 15 are respectively connected to the steam inlet pipe 11 and the exhaust pipe 12 through a flange structure. Specifically, the above-mentioned circulation box 22 is connected to the connecting pipe 15 close to the exhaust pipe 12.

[0041] Reference Figure 2 On the basis of the above-mentioned embodiment, the heat dissipation unit 3 in the present invention includes a bracket 31 fixedly connected to the shell 1, and a crankshaft 32 is rotatably connected to the side of the bracket 31. The crankshaft 32 has two staggered connecting rod shaft diameter parts, and a fan 33 is fixedly connected to the tail end of the crankshaft 32. A flywheel 34 is sleeved on the outer side of the fan 33. The design of the flywheel 34 facilitates the start-up of the device, and the reciprocating rotation of the entire crankshaft 32 can be maintained under the inertia of the flywheel 34. Specifically, the air outlet surface of the fan 33 described in the present invention faces the tubular radiator 21, so that when the fan 33 rotates continuously, the cooling operation of the tubular radiator 21 is realized to ensure that the gas is kept at a low temperature when it flows continuously.

[0042] Reference Figure 3 , Figure 4 Further, the starting unit 4 in the embodiment of the present invention includes a rod 41 movably plugged into the shell 1, a piston 42 is fixedly connected to the bottom of the rod 41, and the piston 42 is movably connected to the inner side of the shell 1, wherein the top of the rod 41 is pinned with a connecting rod 43, and the top end of the connecting rod 43 is pinned to the axial diameter of the connecting rod.

[0043] It should be noted that in the present invention, the shell 1 has a tapered cavity 13 with a gradually decreasing diameter from top to bottom, and a straight opening 14 is opened on one side of the shell 1 close to the steam inlet pipe 11. When the piston 42 moves downward, the straight opening 14 is sealed. Of course, the other side of the shell 1 is connected to the exhaust pipe 12.

[0044] The purpose of adopting this design is that when the piston 42 moves downward, the straight-through port 14 can be blocked by the piston 42, and the steam supply can be stopped at this time. In this state, the steam converges in the upper space of the piston 42. Since a cooling box 24 is installed above the shell 1, the steam temperature of the piston 42 in the upper space of the shell 1 is cooled down by the cooling box 24. According to the principle of thermal expansion and contraction, the volume of the steam decreases after the temperature is reduced, so a certain negative pressure effect is formed. Specifically, according to the negative pressure effect, the controlled driving unit 5 reciprocates. The specific method will be described in detail later, and no further details will be given here.

[0045] Reference Figure 3 , wherein two stop plates 44 are fixedly installed at the bottom of the rod 41, and the piston 1 42 is located between the two stop plates 44. When the upper stop plate 44 contacts the inner top of the shell 1, the piston 1 42 and the inner top of the shell 1 form a steam flow channel.

[0046] The purpose of using two stop plates 44 in this embodiment is that when the piston 42 moves upward or downward, when the stop plate 44 contacts the end surface of the shell 1, there will always be a certain gap between the surface of the piston 42 and the shell 1, and the gap constitutes the above-mentioned steam flow channel. In this way, it can be ensured that during the startup process, when the piston 42 moves to the top of the shell 1, the steam can still extend the piston 42 into the drive unit 5, so as to realize the drive control of the drive unit 5.

[0047] Reference Figure 5 , Figure 6In some embodiments, the drive unit 5 of the present invention includes an extension tube 51 fixedly mounted on the housing 1, and a piston 2 53 is movably inserted into the inner side of the extension tube 51. Specifically, the piston 2 53 described in this embodiment is sealed and connected to the inner side of the extension tube 51, and a connecting rod 2 54 is pinned on the top of the piston 2 53. The other end of the connecting rod 2 54 is pinned to the other connecting rod shaft diameter portion. Specifically, in this embodiment, two connecting rod shaft diameter portions are arranged on the crankshaft 32. Due to the plane staggered design of the two connecting rod shaft diameter portions, when starting, when the piston 1 42 moves downward, the piston 2 53 will move upward, thereby achieving the effect of staggered motion, so that the piston 2 53 can perform reciprocating piston motion in the subsequent process to complete the rotational drive of the crankshaft 32.

[0048] During operation, the flywheel 34 is manually rotated clockwise to start the device;

[0049] At this time, the rotation of the fan 33 drives the crankshaft 32 to rotate, and the crankshaft 32 drives the connecting rod 1 43 and the piston 2 53 to move synchronously. At this time, the connecting rod 1 43 moves upward to drive the piston 1 42 to move upward, and the piston 2 53 moves downward inside the extension tube 51. At this time, the steam enters the inside of the shell 1. Since the inside of the shell 1 adopts the design of the conical cavity 13, when the piston 1 42 moves upward, there is a gap between the piston 1 42 and the shell 1, and the steam fills the entire conical cavity 13;

[0050] Since the upper side of the piston 1 42 has a stopper plate 44, after the piston 1 42 moves upward, a steam flow channel is formed between the upper side of the piston 1 42 and the upper side of the housing 1, and the high-pressure steam accumulated in the conical cavity 13 enters the interior of the extension tube 51. At this time, the steam pushes the piston 2 53 to move upward. It should be noted that when the piston 2 53 moves upward, it passes through the rotation dead point of the connecting rod 2 54 to ensure the subsequent reciprocating motion of the piston 2 53.

[0051] When piston 2 53 moves upward, it will drive crankshaft 32 to move through connecting rod 2 54, so as to drive flywheel 34 to rotate further. When crankshaft 32 rotates again, it will push piston 1 42 to move downward. When piston 1 42 moves downward again, its side will block the through port 14 of shell 1. After the through port 14 is closed, steam accumulates above piston 1 42. Since a cooling box 24 is installed above shell 1, cooling box 24 cools the steam inside shell 1, reduces the air pressure inside shell 1 and forms negative pressure by the principle of thermal expansion and contraction, and pulls piston 2 53 downward again by the action of negative pressure. When piston 2 53 moves downward, it enters the cycle as described above to realize the reciprocating drive rotation of crankshaft 32, so that fan 33 dissipates heat and cools tubular radiator 21.

[0052] Reference Figure 7 On the basis of the above embodiment, considering that it is difficult to achieve the pulling movement of the piston 2 53 by a simple negative pressure, in the present invention, a plurality of guide rods 55 are movably inserted above the extension tube 51, and an adjusting ring 56 is fixedly connected between the tops of the plurality of guide rods 55;

[0053] A spring 57 is provided between the adjusting ring 56 and the opposite surface of the piston 2 53, and an adjusting assembly 58 for driving the adjusting ring 56 to move up and down is also provided above the housing 1. That is, the spring 57 is designed in the present invention to exert pressure on the piston 2 53. When the piston 2 53 moves upward, the reverse thrust of the spring 57 can be used to improve the smoothness of its subsequent downward movement, thereby ensuring that the piston 2 53 can achieve stable reciprocating motion to drive the crankshaft 32.

[0054] Reference Figure 8 On the basis of the above embodiment, considering the design of the simple spring 57, a large damping force will be caused when the piston 2 53 moves upward. Therefore, the adjustment component 58 in the present invention includes a valve plate 581 rotatably connected to the inside of the connecting pipe 15 near the tail pipe 12 through a torsion spring, and the rotating shaft 582 of the valve plate 581 penetrates the shell 1 and extends upward, wherein an eccentric block 583 is fixedly connected to the top of the rotating shaft 582, and a connecting rod 3 584 is pinned on the top of the eccentric block 583, and a sleeve 585 is eccentrically pinned at the tail end of the connecting rod 3 584, and the sleeve 585 is sleeved on the outside of the adjusting ring 56 and threadedly connected.

[0055] That is to say, in actual operation, the valve plate 581 is opened under the action of the high-pressure steam inside the shell 1, and the greater the pressure inside the shell 1, the greater the opening and closing angle of the valve plate 581;

[0056] From the above analysis, it can be known that when the piston 1 42 moves downward, the steam stops entering at this time, and the cooling box 24 cools the steam above the inner side of the shell 1, resulting in a decrease in pressure. At this time, the valve plate 581 rotates and resets under the control of the torsion spring. At this time, the rotating shaft 582 on the valve plate 581 rotates and pulls the connecting rod 3 584 to move through the eccentric block 583. Since the connecting rod 3 584 is eccentrically connected to the sleeve 585, it will drive the sleeve 585 to rotate. The height of the sleeve 585 is unchanged. Since it is threadedly connected to the adjusting ring 56, when the sleeve 585 rotates, the adjusting ring 56 moves downward under the guidance of the guide rod 55 and squeezes the spring 57. In this way, under the dual action of the spring 57 and the pressure, the piston 2 53 can be guaranteed to move downward stably.

[0057] On the contrary, when high pressure rushes into the shell 1, part of the high pressure resists the valve plate 581 to make it rotate, and at the same time part of the high pressure pushes the piston 2 53 to move upward. At this time, the valve plate 581 drives the rotating shaft 582 to open, which is opposite to the above-mentioned action direction, that is, the entire adjusting ring 56 moves upward and no longer exerts pressure on the spring 57. In this way, it can be ensured that when the piston 2 53 moves upward, the spring 57 produces a smaller reverse thrust on the piston 2 53, so as to ensure that the piston 2 53 can achieve the purpose of stable movement, so as to achieve the effect of small resistance to the upward movement of the piston 2 53 and auxiliary thrust when moving downward.

[0058] Reference Figure 4 In addition, in order to prevent the shell 1 from sucking the gas in the circulation box 22 and causing it to flow back during the process of generating negative pressure, a one-way valve plate 52 is further provided inside the connecting pipe 15 close to the tail gas pipe 12 in this embodiment. The one-way valve plate 52 is conducted toward one side of the tail gas pipe 12. That is, the present invention adopts a design of a rotating one-way valve plate 52 to achieve reverse conduction of the connecting pipe 15 on the rear side. In this way, when the driving unit 5 inside the shell 1 is working, it will not interfere with the gas in the circulation box 22, thereby ensuring the movement stability of the driving unit 5.

[0059] In summary, the present invention reuses the residual steam from the steam turbine, controls the movement of the driving unit 5 through this part of the steam, and the driving unit 5 realizes the movement control of the heat dissipation unit 3. When the steam passes through the shell 1 and enters the interior of the circulation box 22 from the tail gas pipe 12, the high-temperature gas is cooled by the cooling unit 2. Since the power of the heat dissipation unit 3 is also provided by the residual steam, the cooling unit 2 is cooled with the help of the heat dissipation unit 3. In this way, when the residual steam passes through this device, it can be condensed and cooled, so as to realize the full utilization of this part of the steam and ensure the low temperature and environmental protection of the exhaust gas.

[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0061] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

Claims

1. A steam turbine residual steam auxiliary condensation device, characterized in that: include; A shell (1) connected to a steam inlet pipe (11) and an exhaust pipe (12); A cooling unit (2) is installed above the shell (1), and the cooling unit (2) forms at least one cooling area above the shell (1); A heat dissipation unit (3) is also connected above the shell (1), and the heat dissipation unit (3) is used to cool the cooling unit (2). A starting unit (4) and a driving unit (5) are installed inside the shell (1), and the starting unit (4) and the driving unit (5) are both connected to the heat dissipation unit (3), and the driving unit (5) is used to drive the heat dissipation unit (3) to move continuously.

2. A steam turbine residual steam auxiliary condensation device according to claim 1, characterized in that: The cooling unit (2) comprises a tubular radiator (21) mounted on the shell (1) and a circulation box (22) connected to one side of the shell (1); The circulation box (22) circulates gas through a pipe (23) with the tubular radiator (21); at least one cooling box (24) is connected to the pipe (23); the cooling box (24) is attached to the top of the shell (1) and forms the cooling area; a one-way valve is provided inside the pipe (23) of the circulation box (22) close to the cooling box (24).

3. The steam turbine residual steam auxiliary condensation device according to claim 1, characterized in that: The heat dissipation unit (3) comprises a bracket (31) fixedly connected to the housing (1); a crankshaft (32) is rotatably connected to the side of the bracket (31); the crankshaft (32) has two connecting rod shaft diameters that are offset from each other; a fan (33) is fixedly connected to the rear end of the crankshaft (32); and a flywheel (34) is sleeved on the outer side of the fan (33).

4. A steam turbine residual steam auxiliary condensation device according to claim 3, characterized in that: The starting unit (4) comprises a rod (41) movably plugged into the housing (1), the bottom of the rod (41) being fixedly connected to a piston (42), wherein the top of the rod (41) is pin-connected to a connecting rod (43), and the top end of the connecting rod (43) is pin-connected to the axial diameter of the connecting rod.

5. The steam turbine residual steam auxiliary condensation device according to claim 4, characterized in that: The shell (1) has a conical cavity (13) with a diameter that gradually decreases from top to bottom. The shell (1) has a straight opening (14) on one side close to the steam inlet pipe (11). When the piston (42) moves downward, the straight opening (14) is sealed. Two stop plates (44) are fixedly mounted at the bottom of the rod (41), and the piston 1 (42) is located between the two stop plates (44). When the upper stop plate (44) contacts the inner top of the shell (1), the piston 1 (42) and the inner top of the shell (1) form a steam flow channel.

6. The steam turbine residual steam auxiliary condensation device according to claim 3, characterized in that: The driving unit (5) comprises an extension tube (51) fixedly mounted on the housing (1), a second piston (53) being movably inserted inside the extension tube (51), a second connecting rod (54) being pin-connected to the top of the second piston (53), and the other end of the second connecting rod (54) being pin-connected to the axial diameter portion of another connecting rod.

7. A steam turbine residual steam auxiliary condensation device according to claim 6, characterized in that: A plurality of guide rods (55) are movably inserted above the extension tube (51), and an adjustment ring (56) is fixedly connected between the tops of the plurality of guide rods (55); A spring (57) is arranged between the adjusting ring (56) and the opposing surface of the second piston (53), and an adjusting component (58) for driving the adjusting ring (56) to move up and down is also arranged above the housing (1).

8. The steam turbine residual steam auxiliary condensation device according to claim 7, characterized in that: Both ends of the shell (1) are provided with connecting pipes (15), and the two connecting pipes (15) are respectively connected to the steam inlet pipe (11) and the tail gas pipe (12) through flange structures.

9. The steam turbine residual steam auxiliary condensation device according to claim 8, characterized in that: The adjustment component (58) includes a valve plate (581) which is rotatably connected to the inside of a connecting pipe (15) near the exhaust pipe (12) through a torsion spring, and a rotating shaft (582) of the valve plate (581) passes through the shell (1) and extends upward, wherein an eccentric block (583) is fixedly connected to the top of the rotating shaft (582), a connecting rod three (584) is pinned on the top of the eccentric block (583), and a sleeve (585) is eccentrically pinned at the tail end of the connecting rod three (584), and the sleeve (585) is sleeved on the outside of the adjustment ring (56) and threadedly connected.

10. The steam turbine residual steam auxiliary condensation device according to claim 7, characterized in that: A one-way valve plate (52) is also arranged inside the connecting pipe (15) close to the tail gas pipe (12), and the one-way valve plate (52) is connected to one side of the tail gas pipe (12).

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