A control unit with low number of auxiliary steam temperature drops during startup

Abstract

The present invention provides a control unit with a low number of auxiliary steam temperature drops during the startup process, including a gas turbine generator set, a low-pressure cylinder cooling steam input pipe is provided at one end of the gas turbine generator set, a low-pressure cylinder cooling steam manual pressure regulating valve is provided in the middle of the low-pressure cylinder cooling steam input pipe, one end of the low-pressure cylinder cooling steam input pipe is connected to the auxiliary steam gas supply main pipe, the end of the auxiliary steam gas supply main pipe is provided with a water recovery mechanism, and a slow-release absorber is provided at the rear end of the low-pressure cylinder cooling steam manual pressure regulating valve. The invention presets the pressure of the slow-release absorber, thereby offsetting the part of the auxiliary steam volume that exceeds the threshold value due to the excessive opening of the regulating valve due to the over-sensitive adjustment of the regulating valve; the auxiliary steam is manually and slowly opened through the low-pressure cylinder cooling steam manual pressure regulating valve to the preset fixed opening of the low-pressure cylinder cooling steam pressure regulating valve of the corresponding unit, thereby meeting that the auxiliary steam volume during the unit startup does not exceed 18t / h, and the auxiliary steam temperature will not drop significantly.

Description

Technical Field

[0001] The present invention relates to the technical field of thermoelectric equipment, and in particular to a control unit with a low number of auxiliary steam temperature drops during a startup process. Background Art

[0002] In order to meet the auxiliary steam parameter requirements after the coal machine is shut down, the gas turbine generator set is equipped with two new electric heaters: a shaft seal steam electric heater and a low-pressure cylinder cooling steam electric heater; during the startup of the unit, the shaft seal steam and the low-pressure cylinder cooling steam operate separately; the shaft seal steam electric heater supplies steam for the unit's shaft seal and deaeration through the shaft seal steam main pipe, and the low-pressure cylinder cooling steam electric heater supplies steam for the unit's low-pressure cylinder cooling through the original auxiliary steam main pipe.

[0003] The auxiliary steam expansion tank was already in operation. Due to the long heating pipeline and the recent commissioning of the new equipment, water accumulation in the expansion tank and a significant drop in the heater outlet temperature and the shaft seal steam inlet temperature were observed. Due to the unique characteristics of the gas turbine, which requires daytime operation and nighttime shutdown, the modified equipment was required to provide auxiliary steam for nearly every startup, posing a serious threat to unit startup safety.

[0004] The investigation found that the main reasons were:

[0005] Some control valves are too sensitive, resulting in excessive opening of the control valve, the auxiliary steam volume exceeding the threshold, and a significant drop in the auxiliary steam temperature. Summary of the Invention

[0006] In view of the above problems, the present invention provides a control unit with a low number of auxiliary steam temperature drops during startup, aiming to solve the technical problem in the above background technology that some regulating valves are too sensitive to adjustment, resulting in excessive opening of the regulating valves.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a control unit with a low number of auxiliary steam temperature drops during startup, comprising a gas turbine generator set, a low-pressure cylinder cooling steam input pipe being provided at one end of the gas turbine generator set, a low-pressure cylinder cooling steam manual pressure regulating valve being provided in the middle of the low-pressure cylinder cooling steam input pipe, one end of the low-pressure cylinder cooling steam input pipe being connected to an auxiliary steam gas supply main pipe, a water recovery mechanism being provided at the end of the auxiliary steam gas supply main pipe, a slow-release absorber being provided at the rear end of the low-pressure cylinder cooling steam manual pressure regulating valve, the slow-release absorber comprising an absorption cylinder body, a flange being provided at the lower end of the absorption cylinder body, a retaining ring being provided at the lower end of the inner part of the absorption cylinder body, a piston being provided above the retaining ring, a sealing ring being provided on the outer side of the piston, the piston being slidably connected to the middle part of a buffer absorption chamber, a head being provided at the upper end of the absorption cylinder body, a pressure gauge assembly being provided on the top surface of the head, and an inflation plug assembly being provided on one side of the head.

[0008] The beneficial effects of the present invention are: by slowly releasing the preset pressure of the absorber, part of the auxiliary steam volume that exceeds the threshold value due to the excessive opening of the regulating valve caused by the overly sensitive adjustment of the regulating valve can be offset; the auxiliary steam is manually and slowly opened through the low-pressure cylinder cooling steam manual pressure regulating valve to the corresponding unit low-pressure cylinder cooling steam pressure regulating valve to a preset fixed opening, thereby meeting the auxiliary steam volume of no more than 18t / h during the unit startup, and the auxiliary steam temperature will not drop significantly; the sponge in the water recovery mechanism absorbs the accumulated water, thereby avoiding the accumulated water deposited in the pipeline from being brought out when the auxiliary steam flow is large, thereby further avoiding a significant drop in the auxiliary steam temperature, and at the same time recovering the accumulated water to reduce consumption.

[0009] In addition, the low-pressure cylinder cooling steam manual pressure regulating valve includes a valve body, a manual control mechanism is provided in the middle of the valve body, the middle of the manual control mechanism is threadedly connected to a piston mechanism, the piston mechanism is provided at one end of the valve body, and an electromagnetic valve is provided at one end of the top surface of the valve body.

[0010] Secondly, flange rings are provided at both ends of the valve body, an outer sleeve is embedded in the upper part of the valve body, the inner part of the outer sleeve is rotatably connected to the upper part of the manual control mechanism, a pressure relief pipe is opened at one end of the top surface of the valve body, and the solenoid valve is provided at the upper end of the pressure relief pipe.

[0011] Furthermore, the manual control mechanism includes a control shell, the outer side of the control shell is arranged on the inner side of the middle part of the valve body, one end of the inner part of the control shell is slidingly connected to the middle end of the piston mechanism, one side of the control shell is rotatably connected to the manual control shaft, the upper end of the manual control shaft is coaxially connected to the wheel, the middle part of the manual control shaft is coaxially connected to the worm, one side of the worm is engaged with the worm wheel, one end of the worm wheel is rotatably connected to the middle part of the rotating bracket, the rotating bracket is arranged in the middle part of the control shell, and the middle part of the worm wheel is threadedly connected to the piston mechanism.

[0012] Furthermore, the piston mechanism includes a screw, the middle part of the screw is threadedly connected to the middle part of the manual control mechanism, one end of the screw is arranged in the middle part of the piston body, one end of the piston body is slidably connected to the internal end of the manual control mechanism, and the other end of the piston body is provided with a grid ring, which is slidably connected to the internal end of the valve body.

[0013] Furthermore, a first sealing rubber ring is provided on the outer side of one end of the piston body, a pressure sealing ring is provided on the outer side of the other end of the piston body, and a second sealing rubber ring is provided on the outer side of the pressure sealing ring.

[0014] Furthermore, the accumulated water recovery mechanism includes a water storage bin, a water-absorbing sponge is provided inside the water storage bin, and a squeezing mechanism is provided on one side of the water-absorbing sponge and one side of the water storage bin.

[0015] Furthermore, a water inlet is provided on the top surface of the water storage bin, and the water inlet is sleeved and connected to the end of the auxiliary steam supply main pipe. A plurality of water outlet holes are opened on one side of the bottom surface of the water storage bin, and a water collection port is provided below the plurality of water outlet holes. A plurality of water push bars are provided on the inner top surface of the water storage bin.

[0016] Furthermore, the extrusion mechanism includes an extrusion push block, the two ends of one side of the extrusion push block are respectively rotatably connected to one end of the extrusion connecting rod, the other ends of multiple extrusion connecting rods are respectively rotatably connected to one end of the extrusion rocker, the other ends of multiple extrusion rockers are respectively arranged at the two ends of the extrusion shaft, the extrusion shaft is rotatably connected to the upper part of the extrusion fixed block, the middle part of the extrusion shaft is coaxially connected to the conical extrusion gear, one side of the conical extrusion gear is engaged and connected to the conical drive gear, the conical drive gear is coaxially connected to the output end of the extrusion drive motor, and the extrusion drive motor is arranged at the lower part of the extrusion fixed block.

[0017] Furthermore, a plurality of water receiving grooves are provided on the top surface of the extrusion push block. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the system structure of the present invention;

[0019] Figure 2 This is a schematic cross-sectional view of the structure of the sustained-release absorber of the present invention;

[0020] Figure 3 This is a schematic diagram of the appearance and structure of the manual pressure regulating valve for cooling steam of a low-pressure cylinder of the present invention;

[0021] Figure 4 This is a schematic diagram showing the internal structure of the manual pressure regulating valve for cooling steam in a low-pressure cylinder according to the present invention;

[0022] Figure 5 This is a schematic cross-sectional view of the internal structure of the manual pressure regulating valve for cooling steam in a low-pressure cylinder according to the present invention;

[0023] Figure 6 This is a schematic cross-sectional view of the valve body structure of the present invention;

[0024] Figure 7 It is a schematic cross-sectional view of the manual control mechanism structure of the present invention;

[0025] Figure 8 It is a schematic cross-sectional view of the piston mechanism structure of the present invention;

[0026] Figure 9 This is a schematic diagram of the appearance and structure of the water recovery mechanism of the present invention;

[0027] Figure 10 This is a schematic diagram of the internal structure of the water recovery mechanism of the present invention;

[0028] Figure 11 This is a schematic diagram of the cross-section of the water storage bin structure of the present invention. Figure 1 ;

[0029] Figure 12 This is a schematic diagram of the cross-section of the water storage bin structure of the present invention. Figure 2 ;

[0030] Figure 13 It is a structural schematic diagram of the extrusion mechanism of the present invention.

[0031] Figure: 1. Gas turbine generator set; 2. Low-pressure cylinder cooling steam input pipe; 3. Manual pressure regulating valve for low-pressure cylinder cooling steam; 31. Valve body; 311. Flange ring; 312. Outer shaft sleeve; 313. Pressure relief pipe; 32. Manual control mechanism; 321. Control housing; 322. Manual control shaft; 323. Rotor; 324. Worm; 325. Worm gear; 326. Rotating bracket; 33. Piston mechanism; 331. Screw; 332. Piston body; 3321. First sealing rubber ring; 3322. Pressure sealing ring; 3323. Second sealing rubber ring; 333. Grille ring; 34. Solenoid valve; 4. Auxiliary steam supply main pipe; 5. Water return pipe Collecting mechanism; 51, water storage bin; 511, water inlet; 512, water outlet; 513, water collection port; 514, water pushing bar; 52, water-absorbing sponge; 53, extrusion mechanism; 531, extrusion push block; 5311, water receiving trough; 532, extrusion connecting rod; 533, extrusion rocker; 534, extrusion shaft; 535, extrusion fixing block; 536, conical extrusion gear; 537, conical drive gear; 538, extrusion drive motor; 6, slow-release absorber; 61, absorption cylinder; 62, flange; 63, retaining ring; 64, piston; 65, sealing ring; 66, buffer absorption chamber; 67, head; 68, pressure gauge assembly; 69, inflation plug assembly. DETAILED DESCRIPTION

[0032] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0033] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which the present invention pertains. The terminology used herein in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0035] Example 1

[0036] Please pay attention to Figure 1-2 , Embodiment 1 of the present invention proposes a control unit with a low number of auxiliary steam temperature drops during startup, comprising a gas turbine generator set 1, one end of the gas turbine generator set 1 is provided with a low-pressure cylinder cooling steam input pipe 2, the middle of the low-pressure cylinder cooling steam input pipe 2 is provided with a low-pressure cylinder cooling steam manual pressure regulating valve 3, one end of the low-pressure cylinder cooling steam input pipe 2 is connected to an auxiliary steam gas supply main pipe 4, the end of the auxiliary steam gas supply main pipe 4 is provided with a water recovery mechanism 5, the rear of the low-pressure cylinder cooling steam manual pressure regulating valve 3 is provided with a water recovery mechanism 5, and the rear of the low-pressure cylinder cooling steam manual pressure regulating valve 3 is provided with a water recovery mechanism 5. A slow-release absorber 6 is provided at the end, and the slow-release absorber 6 includes an absorption cylinder 61. A flange 62 is provided at the lower end of the absorption cylinder 61. A retaining ring 63 is provided at the lower end of the inner part of the absorption cylinder 61. A piston 64 is provided above the retaining ring 63. A sealing ring 65 is provided on the outer side of the piston 64. The piston 64 is slidably connected to the middle of the buffer absorption chamber 66. A head 67 is provided at the upper end of the absorption cylinder 61. A pressure gauge assembly 68 is provided on the top surface of the head 67, and an inflation plug assembly 69 is provided on one side of the head 67.

[0037] By slowly releasing the preset pressure of the absorber 6, part of the auxiliary steam volume that exceeds the threshold value due to the excessive opening of the regulating valve caused by the overly sensitive adjustment of the regulating valve can be offset; the auxiliary steam is manually and slowly opened through the low-pressure cylinder cooling steam manual pressure regulating valve 3 to the corresponding unit low-pressure cylinder cooling steam pressure regulating valve to a preset fixed opening, so as to meet the auxiliary steam volume of no more than 18t / h during the unit startup, and the auxiliary steam temperature will not drop significantly; the water-absorbing sponge 52 in the water recovery mechanism 5 absorbs the accumulated water, so as to avoid the accumulated water deposited in the pipeline being brought out when the auxiliary steam flow is large, thereby further avoiding a significant drop in the auxiliary steam temperature, and at the same time recovering the accumulated water to reduce consumption.

[0038] To solve the problem of manual opening of valve body 31, please refer to Figure 3-5The low-pressure cylinder cooling steam manual pressure regulating valve 3 includes a valve body 31, a manual control mechanism 32 is provided in the middle of the valve body 31, the middle part of the manual control mechanism 32 is threadedly connected to a piston mechanism 33, and the piston mechanism 33 is provided at one end of the valve body 31. A solenoid valve 34 is provided at one end of the top surface of the valve body 31. This design connects the inside and outside of the valve body 31 through the solenoid valve 34 before the valve is manually opened, thereby reducing the pressure difference and thus reducing the resistance of manual operation. The position of the piston mechanism 33 is controlled by the manual control mechanism 32 to realize the opening and closing of the valve.

[0039] Specifically, flange rings 311 are provided at both ends of the valve body 31, an outer sleeve 312 is embedded in the upper part of the valve body 31, the inner part of the outer sleeve 312 is rotatably connected to the upper part of the manual control mechanism 32, and a pressure relief pipe 313 is opened at one end of the top surface of the valve body 31, and the upper end of the pressure relief pipe 313 is provided with the solenoid valve 34.

[0040] To solve the problem of manual control of the piston mechanism 33, please refer to Figure 7 The manual control mechanism 32 includes a control housing 321. The outer side of the control housing 321 is arranged on the inner side of the middle part of the valve body 31. One end of the inner side of the control housing 321 is slidably connected to the middle end of the piston mechanism 33. One side of the control housing 321 is rotatably connected to the manual control shaft 322. The upper end of the manual control shaft 322 is coaxially connected to the runner 323. The middle part of the manual control shaft 322 is coaxially connected to the worm 324. One side of the worm 324 engages Connect the worm gear 325, one end of which is rotatably connected to the middle of the rotating bracket 326. The rotating bracket 326 is provided in the middle of the control housing 321. The middle part of the worm gear 325 is threadedly connected to the piston mechanism 33. This design drives the manual control shaft 322 to rotate by rotating the rotating wheel 323, and then drives the worm 324 to rotate, and then drives the worm gear 325 to rotate. The control of the piston mechanism 33 is achieved through the threaded cooperation of the worm gear 325 and the piston mechanism 33.

[0041] To solve the flow control problem, please refer to Figure 8The cam 332 is provided with a screw 331 and a screw 332 is provided on the cam 332 so as to prevent the cam from sliding onto the cam 332. The cam 332 is provided with a screw 331 and a screw 332 is provided on the cam 332 so as to prevent the cam from sliding onto the cam 332.

[0042] To solve the problem of excessive residual water, please refer to Figure 9-10 The water recovery mechanism 5 includes a water storage bin 51, and a water-absorbing sponge 52 is provided inside the water storage bin 51. A squeezing mechanism 53 is provided on one side of the water-absorbing sponge 52 and one side of the water storage bin 51. This design absorbs the accumulated water through the water-absorbing sponge 52 to avoid the accumulated water deposited in the pipeline being brought out when the auxiliary steam flow is large, and the water falling on the top surface of the squeezing push block 531 is pushed into the water-absorbing sponge 52 through multiple water pushing bars 514.

[0043] For details, please refer to Figure 11-13The top surface of the water storage bin 51 is provided with a water inlet 511, and the water inlet 511 is sleeved and connected to the end of the auxiliary steam supply main pipe 4. A plurality of water outlet holes 512 are opened on one side of the bottom surface of the water storage bin 51, and a water collection port 513 is provided below the plurality of water outlet holes 512. The inner top surface of the water storage bin 51 is provided with a plurality of water pushing strips 514. The extrusion mechanism 53 includes an extrusion push block 531, and the two ends of one side of the extrusion push block 531 are respectively rotatably connected to one end of the extrusion connecting rod 532, and the other ends of the plurality of extrusion connecting rods 532 are respectively rotatably connected to one end of the extrusion rocker 533, and the other ends of the plurality of extrusion rockers 533 are respectively provided at the two ends of the extrusion rotating shaft 534, and the extrusion rotating shaft 534 is rotatably connected to the upper part of the extrusion fixing block 535, and the middle part of the extrusion rotating shaft 534 is coaxially connected to the conical extrusion Gear 536, one side of the conical extrusion gear 536 is engaged with the conical drive gear 537, and the conical drive gear 537 is coaxially connected to the output end of the extrusion drive motor 538. The extrusion drive motor 538 is arranged at the lower part of the extrusion fixed block 535, and the top surface of the extrusion push block 531 is provided with multiple water receiving grooves 5311. This design drives the conical drive gear 537 to rotate through the extrusion drive motor 538, and then drives the conical extrusion gear 536 to rotate, and then drives the extrusion shaft 534 to rotate. The extrusion shaft 534 drives multiple extrusion rockers 533 to rotate, and further drives multiple extrusion connecting rods 532 to move, to push the extrusion push block 531 to reciprocate, thereby repeatedly squeezing the water-absorbing sponge 52, squeezing the water therein out from multiple water outlets 512 to the water collection port 513 for easy recovery.

[0044] The operating principle of the present invention is as follows: first, after the gas turbine generator set 1 is started, as the low-pressure regulating valve ACV is opened, the low-pressure cylinder cooling steam manual pressure regulating valve 3 is opened manually and slowly in time, and the manual control shaft 322 is driven to rotate by rotating the wheel 323, and then the worm 324 is driven to rotate, and then the worm gear 325 is driven to rotate, and the piston mechanism 33 is controlled by the threaded cooperation of the worm gear 325 and the piston mechanism 33, and the flow is controlled by the position of the piston body 332 and the grid ring 333, and opened to a preset fixed opening, so as to meet the auxiliary steam volume of no more than 18t / h during the unit startup, and the auxiliary steam temperature will not drop significantly; by slowly releasing the preset pressure of the absorber 6, it is ensured that when the regulating valve is too sensitive to adjustment, the regulating valve opening is too large, and part of the regulating valve is opened. When the auxiliary steam volume exceeds the threshold, the auxiliary steam pushes the piston 64, and absorbs the auxiliary steam that exceeds the threshold at the moment the valve is opened through the buffer absorption chamber 66; at the same time, the water-absorbing sponge 52 absorbs the accumulated water to prevent the accumulated water deposited in the pipeline from being brought out when the auxiliary steam flow is large. The conical drive gear 537 is driven to rotate by the extrusion drive motor 538, and then the conical extrusion gear 536 is driven to rotate, and then the extrusion shaft 534 is driven to rotate. The extrusion shaft 534 drives multiple extrusion rockers 533 to rotate, and further drives multiple extrusion connecting rods 532 to move, so as to push the extrusion push block 531 to reciprocate, thereby repeatedly squeezing the water-absorbing sponge 52, squeezing the water therein out from multiple water outlets 512 to the water collection port 513 for easy recovery, thereby reducing water consumption.

[0045] The above description of the present invention is exemplified in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A control unit with a low number of auxiliary steam temperature drops during startup, comprising a gas turbine generator set (1), characterized in that: A low-pressure cylinder cooling steam input pipe (2) is provided at one end of the gas turbine generator set (1), a low-pressure cylinder cooling steam manual pressure regulating valve (3) is provided in the middle of the low-pressure cylinder cooling steam input pipe (2), one end of the low-pressure cylinder cooling steam input pipe (2) is connected to an auxiliary steam gas supply main pipe (4), a water recovery mechanism (5) is provided at the end of the auxiliary steam gas supply main pipe (4), a slow-release absorber (6) is provided at the rear end of the low-pressure cylinder cooling steam manual pressure regulating valve (3), and the slow-release absorber (6) includes an absorption cylinder body (61) The lower end of the absorbing cylinder (61) is provided with a flange (62), the lower end of the inner part of the absorbing cylinder (61) is provided with a retaining ring (63), a piston (64) is provided above the retaining ring (63), a sealing ring (65) is provided on the outer side of the piston (64), the piston (64) is slidably connected to the middle part of the buffer absorbing chamber (66), the upper end of the absorbing cylinder (61) is provided with a head (67), the top surface of the head (67) is provided with a pressure gauge assembly (68), and one side of the head (67) is provided with an inflation plug assembly (69); The low-pressure cylinder cooling steam manual pressure regulating valve (3) comprises a valve body (31), a manual control mechanism (32) is provided in the middle of the valve body (31), the middle of the manual control mechanism (32) is threadedly connected to a piston mechanism (33), a pressure relief pipe (313) is provided at one end of the top surface of the valve body (31), and a solenoid valve (34) is provided at the upper end of the pressure relief pipe (313); The piston mechanism (33) comprises a screw (331), one end of the screw (331) is arranged in the middle of the piston body (332), and the other end of the piston body (332) is provided with a grid ring (333), and the grid ring (333) is slidably connected to one end inside the valve body (31).

2. A control unit with a low number of auxiliary steam temperature drops during startup according to claim 1, characterized in that: The piston mechanism (33) is provided at one end of the valve body (31), and a solenoid valve (34) is provided at one end of the top surface of the valve body (31).

3. A control unit with a low number of auxiliary steam temperature drops during startup according to claim 2, characterized in that: Flange rings (311) are provided at both ends of the valve body (31), an outer shaft sleeve (312) is embedded in the upper part of the valve body (31), and the inner part of the outer shaft sleeve (312) is rotatably connected to the upper part of the manual control mechanism (32).

4. A control unit with a low number of auxiliary steam temperature drops during startup according to claim 1, characterized in that: The manual control mechanism (32) includes a control housing (321), the outer side of the control housing (321) is arranged on the inner side of the middle part of the valve body (31), one end of the inner side of the control housing (321) is slidably connected to one end of the middle part of the piston mechanism (33), one side of the control housing (321) is rotatably connected to the manual control shaft (322), the upper end of the manual control shaft (322) is coaxially connected to the rotating wheel (323), the middle part of the manual control shaft (322) is coaxially connected to the worm (324), one side of the worm (324) is engaged with the worm wheel (325), one end of the worm wheel (325) is rotatably connected to the middle part of the rotating bracket (326), the rotating bracket (326) is arranged in the middle part of the control housing (321), and the middle part of the worm wheel (325) is threadedly connected to the piston mechanism (33).

5. The control unit with low auxiliary steam temperature drop frequency during startup according to claim 2, characterized in that: The middle portion of the screw rod (331) is threadedly connected to the middle portion of the manual control mechanism (32), and one end of the piston body (332) is slidably connected to an inner end of the manual control mechanism (32).

6. A control unit with a low number of auxiliary steam temperature drops during startup according to claim 5, characterized in that: A first sealing rubber ring (3321) is provided on the outside of one end of the piston body (332), a pressure sealing ring (3322) is provided on the outside of the other end of the piston body (332), and a second sealing rubber ring (3323) is provided on the outside of the pressure sealing ring (3322).

7. The control unit with low auxiliary steam temperature drop frequency during startup according to claim 1, characterized in that: The accumulated water recovery mechanism (5) comprises a water storage bin (51), a water absorbing sponge (52) is provided inside the water storage bin (51), and a squeezing mechanism (53) is provided on one side of the water absorbing sponge (52) and one side of the water storage bin (51).

8. A control unit with a low number of auxiliary steam temperature drops during startup according to claim 7, characterized in that: The top surface of the water storage bin (51) is provided with a water inlet (511), and the water inlet (511) is sleeved and connected to the end of the auxiliary steam supply main pipe (4). A plurality of water outlet holes (512) are opened on one side of the bottom surface of the water storage bin (51), and a water collection port (513) is provided below the plurality of water outlet holes (512). The inner top surface of the water storage bin (51) is provided with a plurality of water pushing strips (514).

9. A control unit with a low number of auxiliary steam temperature drops during startup according to claim 7, characterized in that: The extrusion mechanism (53) includes an extrusion push block (531), one end of the extrusion push block (531) is rotatably connected to one end of an extrusion connecting rod (532), the other ends of the multiple extrusion connecting rods (532) are rotatably connected to one end of an extrusion rocker (533), the other ends of the multiple extrusion rockers (533) are respectively arranged at the two ends of an extrusion rotating shaft (534), the extrusion rotating shaft (534) is rotatably connected to the upper part of an extrusion fixed block (535), the middle part of the extrusion rotating shaft (534) is coaxially connected to a conical extrusion gear (536), one side of the conical extrusion gear (536) is engaged with a conical driving gear (537), the conical driving gear (537) is coaxially connected to the output end of an extrusion driving motor (538), and the extrusion driving motor (538) is arranged at the lower part of the extrusion fixed block (535).

10. A control unit with a low number of auxiliary steam temperature drops during startup according to claim 9, characterized in that: The top surface of the extrusion push block (531) is provided with a plurality of water receiving grooves (5311).

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