A steam temperature measuring device for thermal power plants

Abstract

A steam temperature measuring device for thermal power plants includes two fixed bases, a first connecting pipe connected between the two fixed bases, second connecting pipes respectively connected to the sides of the two fixed bases, and a temperature sensor mounted on one of the fixed bases with its probe extending inside. It also includes a drive mechanism and a dewatering mechanism disposed within the other fixed base. The dewatering mechanism includes a lifting assembly and a dewatering component. The lifting assembly includes a fixed ring driven by the drive mechanism. The fixed ring is movably connected to the two dewatering components via a squeezing structure. The two dewatering components are symmetrically arranged on both sides of the probe. Each dewatering component includes a sponge strip. The sponge strip moves downwards along the probe surface via the fixed ring and in conjunction with the squeezing structure to wipe the probe and squeeze out water, thus preventing water droplets from affecting the accuracy of the probe's temperature data detection and effectively improving the performance.

Description

Technical Field

[0001] This invention relates to a steam temperature measuring device for thermal power plants, belonging to the field of thermal power plant temperature measurement technology. Background Technology

[0002] A thermal power plant, or coal-fired power plant for short, is a factory that uses combustible materials (such as coal, oil, and natural gas) as fuel to produce electricity. Its basic production process is as follows: when the fuel is burned, it heats water to generate steam, which converts the chemical energy of the fuel into heat energy. The steam pressure drives the turbine to rotate, and the heat energy is converted into mechanical energy. Then, the turbine drives the generator to rotate, which converts the mechanical energy into electrical energy. They all generate electricity by utilizing the pressure drop in the process of high-temperature, high-pressure steam or gas being converted into low-pressure air or condensate through a turbine. In the production of thermal power plants, thermal measurement is an integral part of the thermal process control system. Thermal measurement plays an important role in the control system. Thermal parameters include pressure, temperature, flow rate, speed, vibration, and level. These parameters are acquired through relevant sensors. The temperature sensor used in the measurement process is used to measure the temperature of steam. During use, the temperature sensor probe is inserted into the steam delivery pipeline to collect temperature data. However, during the steam delivery process, water droplets condense on the side wall of the probe after it comes into contact with the probe, which affects the accuracy of the probe's temperature data detection and thus the measurement results.

[0003] Chinese Patent Publication No. CN118462337A discloses a turbine cylinder monitoring device, including a cylinder body, a temperature sensor and a pressure sensor mounted on it, and a wiping and water removal mechanism for the probe. The device uses a spring to drive an L-shaped mounting ring and a water-guiding ring, on which absorbent cotton is installed, to move up and down to wipe water droplets from the probe's sidewall. A separate guide groove mechanism enables unidirectional water wiping, and a squeezing assembly consisting of rollers, a guide ring, and a transfer plate, when triggered at a specific position on the probe, laterally squeezes the absorbent cotton to drain water.

[0004] Although the application can wipe the probe and squeeze out the water from the absorbent cotton, its entire water removal action relies on an externally controlled spring as a power source, which is complex in structure; moreover, wiping and squeezing are two independent mechanisms with separate actions, which require specific conditions to trigger and cannot achieve a continuous and coherent wiping and self-cleaning cycle.

[0005] To address this problem, we provide a steam temperature measuring device for thermal power plants. Summary of the Invention

[0006] To address the aforementioned problems in existing technologies, this invention provides a steam temperature measuring device for thermal power plants that avoids water droplets affecting the accuracy of temperature data detection by the probe, thus effectively improving its performance.

[0007] The technical solution of the present invention is as follows: A steam temperature measuring device for a thermal power plant includes two fixed bases, a first connecting pipe connected between the two fixed bases, second connecting pipes respectively connected to the sides of the two fixed bases, and a temperature sensor mounted on one of the fixed bases with its probe extending inside. It also includes a drive mechanism and a dewatering mechanism disposed within the other fixed base. The dewatering mechanism includes a lifting assembly and a dewatering component. The lifting assembly includes a fixed ring driven by the drive mechanism. The fixed ring is movably connected to the two dewatering components via a compression structure. The two dewatering components are symmetrically arranged on both sides of the probe. Each dewatering component includes a sponge strip. The sponge strip moves downwards along the probe surface via the fixed ring and in conjunction with the compression structure to wipe the probe and squeeze out water.

[0008] The drive mechanism includes bearing seats mounted on both sides of the inner cavity of the fixed seat. The bearing seats are rotatably connected to a drive shaft. An impeller and a first bevel gear are sequentially mounted on the outer side of the drive shaft. A second bevel gear meshes with the outer side of the first bevel gear. A transmission shaft is mounted in the middle of the second bevel gear. The transmission shaft passes through the first connecting pipe and extends to the inner cavity of the fixed seat where the probe is located, and is connected to the water removal mechanism.

[0009] The lifting assembly includes a fixing bar connected to a drive shaft, a fixing post connected to the outside of the fixing bar, a fixing frame bar movably sleeved on the outside of the fixing post, a fixing ring connected to the outside of the fixing frame bar via a connecting bracket, a first positioning post symmetrically inserted into the upper end of the fixing frame bar, a second positioning post inserted into the upper end of the fixing ring, and the lower ends of the first and second positioning posts are both installed at the bottom of the inner cavity of the fixing seat.

[0010] The extrusion structure includes first concave parts symmetrically installed on the lower end of the top surface inside the fixed base. Each of the first concave parts is movably connected to a movable rod via a pin. Each movable rod is rotatably connected to a movable strip via a connector. The outer side of the fixed ring is symmetrically provided with mounting grooves. The inner cavity of each mounting groove is movably connected to the movable strip via a pin.

[0011] The water removal assembly includes two second concave parts rotatably connected to a movable rod via a pin. Each of the two second concave parts is connected to a base. An arc-shaped groove is provided on one side of the base. The sponge strip is adhered to the inner wall of the arc-shaped groove. The arc-shaped groove is connected to the inner cavity of the base. A drain hole is provided at the bottom end of the inner cavity of the base. Limiting holes are provided at the upper end of the base. Limiting posts that are inserted into the upper end of the housing are symmetrically installed therewith.

[0012] The water removal mechanism further includes a drainage component, which includes a base plate installed at the bottom of the inner cavity of a fixed seat. The upper end of the base plate is connected to a housing, and the upper end of the housing is symmetrically equipped with sleeves. The upper end of the sleeves is connected to a drain hole, and the lower end of the base plate is connected to a drain pipe. The lower end of the drain pipe passes through the fixed seat and extends to the outside where a solenoid valve is installed.

[0013] Both of the fixed seats are provided with cover plates at their upper ends. A support assembly is installed on the upper end of one of the cover plates, and a first concave member is symmetrically installed on the lower end of the cover plate. A temperature sensor is installed on the upper end of the support assembly. The support assembly includes a support sleeve installed on the upper end of the fixed seat. A first mounting plate is integrally connected to the upper outer side of the support sleeve. A second mounting plate is installed on the outer side of the temperature sensor. A groove is provided at the upper end of the first mounting plate. A sealing ring is embedded in the inner cavity of the groove. The second mounting plate is passed through the first mounting plate by multiple sets of first bolts and screwed with a first nut.

[0014] The upper side of the inner cavity of the fixing seat is provided with an L-shaped square groove. The inner cavity of the L-shaped square groove is fitted with a second square washer. The upper end of the second square washer is integrally connected with a first square washer. The upper end of the L-shaped square groove is provided with threaded holes around its perimeter. The cover plate passes through the first square washer and is screwed to the threaded holes by four sets of third bolts.

[0015] In this configuration, each of the second connecting pipes is connected to a pipe body for accessing steam via an assembly assembly. The assembly assembly includes a third mounting plate and a fourth mounting plate that are respectively connected to the second connecting pipe and the pipe body. The outer side of the third mounting plate is integrally connected with a first sealing ring and a second sealing ring. A second sealing ring is engaged between the first sealing ring and the second sealing ring. The outer side of the fourth mounting plate is provided with a first annular groove that engages with the first sealing ring and the second sealing ring. The inner cavity of the first annular groove is provided with a second annular groove that engages with the second sealing ring. Nut grooves are provided at equal intervals on the outer side of the fourth mounting plate. A second nut is placed in the inner cavity of each nut groove. The third mounting plate is screwed together with multiple sets of second bolts and multiple second nuts.

[0016] The transmission shaft is movably sleeved with a first support seat and a second support seat, which are respectively installed at the bottom of the inner cavity of two fixed seats.

[0017] The present invention has the following beneficial effects: This solution utilizes the continuous impact of high-pressure steam on the impeller to drive its rotation. The impeller, in turn, drives the drive shaft and the first bevel gear. The first bevel gear, in turn, drives the second bevel gear and the transmission shaft. The rotation of the transmission shaft, in turn, causes the lifting component of the dewatering mechanism to move up and down. This lifting component moves the dewatering component horizontally towards the outside of the probe while simultaneously removing water droplets. When the sponge strip of the dewatering component comes into contact with the outside of the probe, the base and the sponge strip continue to move downwards and outwards towards the probe, resulting in the sponge strip fully contacting and squeezing the sponge. This allows the sponge strip to squeeze out water droplets after wiping the water droplets from the outside of the probe, forcing the water stored in the sponge strip into the inner cavity of the base. This facilitates the continuous wiping of water droplets from the probe by the sponge strip, preventing water droplets from affecting the accuracy of the probe's temperature data detection and effectively improving the performance. This solution involves engaging the integrated second square washer and the first square washer with the L-shaped square groove inside the fixed seat cavity, then covering them with a cover plate. The lower end of the cover plate fits against the first square washer. Finally, the cover plate is screwed into the threaded hole at the upper end of the L-shaped square groove by a third bolt, which facilitates a sealed connection between the fixed seat and the cover plate, effectively preventing steam from entering. In addition, a sealed assembly is achieved between the third mounting plate on the outside of the second connecting pipe and the fourth mounting plate on the pipe body, thus facilitating a stable flow of steam from the pipe body to the second connecting pipe. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this invention; Figure 2 This is a partial half-section view and a schematic diagram of the split three-dimensional structure proposed in this invention; Figure 3 The present invention proposes Figure 2 Enlarged structural diagram of section A; Figure 4 This is a schematic diagram of the disassembled three-dimensional structure of the support component proposed in this invention; Figure 5 This is a three-dimensional structural diagram of a portion of the driving mechanism proposed in this invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the reporting part proposed in this invention; Figure 7 This is a three-dimensional structural diagram of the water removal mechanism proposed in this invention; Figure 8 This is a three-dimensional structural diagram of the lifting component proposed in this invention; Figure 9This is a semi-sectional three-dimensional structural diagram of the water removal component proposed in this invention; Figure 10 This is a semi-sectional three-dimensional structural diagram of the drainage component proposed in this invention; Figure 11 This is a schematic diagram of the disassembled three-dimensional structure of the assembly component proposed in this invention; Figure 12 The present invention proposes Figure 11 Enlarged structural diagram of section B.

[0019] The reference numerals in the figure are as follows: 1. Fixed base; 2. Cover plate; 3. First connecting pipe; 4. Second connecting pipe; 5. Temperature sensor; 6. Support assembly; 61. Support sleeve; 62. First mounting plate; 63. Groove; 64. Second mounting plate; 65. Sealing ring; 66. First bolt; 67. First nut; 7. Drive mechanism; 71. Bearing seat; 72. Drive shaft; 73. Impeller; 74. First bevel gear; 75. Second bevel gear; 76. Transmission shaft; 77. First support base; 78. Second support base; 8. Water removal mechanism; 81. Lifting assembly; 811. Fixing strip; 812. Fixing column; 813. Fixing frame strip; 814. Connecting frame; 815. Fixing ring; 816. Mounting groove; 817. Movable strip; 818. Movable rod; 819. First concave part; 8110. First positioning column; 8 111. Second positioning post; 82. Water removal assembly; 821. Second concave part; 822. Base; 823. Arc groove; 824. Sponge strip; 825. Limiting hole; 826. Drain hole; 83. Drainage assembly; 831. Base plate; 832. Housing; 833. Sleeve; 834. Drain pipe; 835. Solenoid valve; 84. Limiting post; 9. Assembly assembly; 91. Third mounting plate; 92. Fourth mounting plate; 93. First sealing ring; 94. Second sealing ring; 95. Second sealing ring; 96. First annular groove; 97. Second annular groove; 98. Nut groove; 99. Second nut; 910. Second bolt; 10. Pipe body; 11. L-shaped square groove; 12. Threaded hole; 13. First square washer; 14. Second square washer; 15. Third bolt; 16. Probe. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] Please see Figures 1 to 12 The invention provides a technical solution: Reference Figure 1-3As shown, a steam temperature measuring device for a thermal power plant includes a fixed base 1. Each of the two fixed bases 1 has a cover plate 2 at its upper end. Each fixed base 1 has an L-shaped square groove 11 on its upper side. A second square washer 14 is snapped into the inner cavity of the L-shaped square groove 11. A first square washer 13 is integrally connected to the upper end of the second square washer 14. Threaded holes 12 are provided around the upper end of the L-shaped square groove 11. The cover plate 2 passes through the first square washer 13 and is screwed into the threaded holes 12 by four sets of third bolts 15.

[0022] First, the sealing assembly, consisting of the integrated second square washer 14 and the first square washer 13, is inserted into the L-shaped square groove 11 inside the cavity of the fixing seat 1. This L-shaped square groove 11 effectively limits the radial and axial movement of the second square washer 14 and the first square washer 13, preventing them from shifting under pressure. Then, the cover plate 2 is placed on top, ensuring that the lower end face of the cover plate 2 is tightly fitted against the upper surface of the first square washer 13. Finally, the third bolt 15 is screwed into the threaded hole 12. The tightening force of the bolt creates a uniform and reliable sealing surface pressure between the cover plate 2, the second square washer 14, the first square washer 13, and the upper edge of the L-shaped square groove 11 of the fixing seat 1.

[0023] This sealing structure has significant advantages over traditional flat gasket seals or simple O-ring seals: First, the L-shaped square groove 11 positions the second square gasket 14 and the first square gasket 13, preventing seal failure caused by gasket misalignment during installation; second, the integrated design of the second square gasket 14 and the first square gasket 13 eliminates the risk of interface leakage that may exist with multi-layer gaskets and enhances the overall resistance to pressure deformation; third, the evenly distributed tightening of multiple bolts ensures the uniformity of sealing pressure, enabling it to effectively adapt to the high temperature, high pressure, and possible pulsating conditions inside the steam pipeline of thermal power plants, achieving a stable sealing connection between the fixed seat 1 and the cover plate 2, fundamentally preventing steam leakage.

[0024] Reference Figure 1-2As shown in Figure 4, a support assembly 6 is attached to the upper end of one of the cover plates 2. A temperature sensor 5 is installed on the upper end of the support assembly 6. The lower end of the temperature sensor 5 passes through the cover plate 2 and is connected to a probe 16. The probe 16 extends into the inner cavity of the fixing base 1 to contact the steam for temperature measurement. The support assembly 6 includes a support sleeve 61 installed on the upper end of the fixing base 1. A first mounting plate 62 is integrally connected to the upper outer side of the support sleeve 61. A second mounting plate 64 is installed on the outer side of the temperature sensor 5. To ensure the sealing of the installation part of the temperature sensor 5, a groove 63 is provided at the upper end of the first mounting plate 62. A sealing ring 65 is embedded in the inner cavity of the groove 63. During installation, the second mounting plate 64 on the outer side of the temperature sensor 5 is aligned and attached to the first mounting plate 62 on the outer side of the support sleeve 61, so that the sealing ring 65 is pressed between the two mounting plates. Then, multiple sets of first bolts 66 are used to pass through the mounting holes of the second mounting plate 64 and the first mounting plate 62, and the first nut 67 is tightened at the lower end of the first mounting plate 62 to complete the fixed installation of the temperature sensor 5.

[0025] The second mounting plate 64 on the outside of the temperature sensor 5 is installed on the first mounting plate 62 on the outside of the support sleeve 61. Then, the second mounting plate 64 and the first mounting plate 62 are fixed together by screwing together multiple sets of first bolts 66 and first nuts 67. A sealing ring 65 is fitted in the groove 63 at the upper end of the first mounting plate 62. The design of the sealing ring 65 effectively increases the sealing effect of the installation, increases the airtightness, and effectively prevents steam leakage.

[0026] The second mounting plate 64 and the first mounting plate 62 are screwed together by multiple sets of first bolts 66 and first nuts 67, forming a solid connection that can effectively resist the vibration that may be generated by the steam pipeline and ensure the long-term stability of the temperature sensor 5.

[0027] More importantly, the design of a pre-installed sealing ring 65 in the groove 63 specially provided at the upper end of the first mounting plate 62 constitutes a reliable static seal. When the first bolt 66 is tightened, the sealing ring 65 generates uniform elastic deformation between the pressing surfaces of the second mounting plate 64 and the first mounting plate 62, tightly filling all microscopic unevenness, thereby significantly enhancing the airtightness of the mounting interface.

[0028] Compared to traditional installation methods that involve directly screwing in the temperature sensor 5 using a thread or a single flat gasket, this method offers higher sealing reliability and repeatability. It completely prevents high-pressure steam from escaping from the mounting interface of the temperature sensor 5, ensuring the stability of the measurement environment, thereby improving the accuracy of temperature data acquisition. It also eliminates the safety risks and energy losses caused by steam leakage, greatly enhancing the reliability and safety of the measuring device in harsh industrial environments.

[0029] Reference Figure 1-2As shown in Figure 5, a first connecting pipe 3 connects the two fixed seats 1. A drive mechanism 7 is installed in the inner cavity of one of the fixed seats 1. The drive mechanism 7 includes bearing seats 71 installed on both sides of the inner cavity of one fixed seat 1. A drive shaft 72 is rotatably connected between the bearing seats 71. An impeller 73 is installed on the outer side of the drive shaft 72. A first bevel gear 74 is installed on the outer side of the drive shaft 72. A second bevel gear 75 meshes with the outer side of the first bevel gear 74. A transmission shaft 76 is installed in the middle of the second bevel gear 75. A first support seat 77 and a second support seat 78 are movably sleeved on the outer side of the transmission shaft 76. The first support seat 77 and the second support seat 78 are respectively installed at the bottom of the inner cavities of the two fixed seats 1.

[0030] When high-pressure steam is delivered to the turbine, it is transported through the tube 10. The steam in the tube 10 enters a fixed seat 1 through a second connecting pipe 4. The high-pressure steam continuously impacts the impeller 73. Due to the excessive steam pressure, the impeller 73 is driven to rotate when it impacts the impeller 73. The impeller 73 drives the drive shaft 72 and the first bevel gear 74 on its outer side to rotate. The first bevel gear 74 drives the second bevel gear 75 and the transmission shaft 76 in its inner cavity to rotate. The outer sides of the first bevel gear 74 and the second bevel gear 75 are provided with multiple round holes, which facilitate the direct discharge of steam through the round holes and avoid obstruction that could cause directional flow and make the forward rotation of the impeller 73 unstable. This effectively improves the power stability of the drive mechanism 7.

[0031] Reference Figure 1-2 As shown in Figures 6-10, one end of the drive mechanism 7 passes through the first connecting pipe 3 and extends into the inner cavity of another fixed base 1, where it is connected to a water removal mechanism 8. The water removal mechanism 8 includes a lifting assembly 81 connected to the drive mechanism 7. The lifting assembly 81 includes a fixing strip 811 connected to the drive shaft 76. A fixing post 812 is connected to the outer side of the fixing strip 811. A fixing frame strip 813 is movably sleeved on the outer side of the fixing post 812. A fixing ring 815 is connected to the outer side of the fixing frame strip 813 via a connecting bracket 814. A first concave part is symmetrically installed at the lower end of a cover plate 2. 819, each of the first concave parts 819 is movably connected to a movable rod 818 via a pin, and each movable rod 818 is rotatably connected to a movable strip 817 via a connector. The outer side of the fixed ring 815 is symmetrically provided with mounting grooves 816, and the inner cavity of the mounting groove 816 is movably connected to the movable strip 817 via a pin. The upper end of the fixed frame strip 813 is symmetrically inserted with a first positioning post 8110, and the upper end of the fixed ring 815 is inserted with a second positioning post 8111. The lower ends of the first positioning post 8110 and the second positioning post 8111 are both installed at the bottom of the inner cavity of the fixed seat 1.

[0032] The rotation of the drive shaft 76 drives the fixed bar 811 to rotate, which in turn drives the fixed post 812 to rotate. With the fixed frame bar 813 in a limited position by its own movable insertion into the first positioning post 8110, when the fixed post 812 moves in a circular motion with the fixed bar 811, the fixed post 812 pushes the outer fixed frame bar 813 to move vertically to its limit. This causes the fixed frame bar 813 to drive the fixed ring 815 to move vertically through the connecting frame 814. Furthermore, the fixed ring 815, under the limiting insertion of the second positioning post 8111, further improves the stability of its movement. To achieve a certain effect, when the fixed ring 815 moves up and down, the pin in the inner cavity of the mounting groove 816 on the outer side of the fixed ring 815 drives one end of the movable strip 817 to move down. At the same time, the other end of the movable strip 817 drives the movable rod 818 to move down through the connector. Simultaneously, the lower part of the corresponding side of the two movable rods 818 rotates in the same direction. This facilitates the movable rod 818 to drive the water removal component 82 to move towards the outside of the probe 16 and perform water removal operation. This facilitates effective and continuous removal of water droplets from the probe 16, preventing water droplets from affecting the accuracy of the probe's temperature data detection.

[0033] The lifting assembly 81 is movably connected to the water removal assembly 82, which is located outside the probe 16. The water removal assembly 82 includes two second concave parts 821 that are rotatably connected to the movable rod 818 via a pin. The two second concave parts 821 are respectively connected to the base 822. An arc groove 823 is provided on one side of the base 822. A sponge strip 824 is adhered to the inner wall of the arc groove 823. The arc groove 823 is connected to the inner cavity of the base 822.

[0034] The lower parts of the two movable rods 818 drive the pin and the second concave part 821 to move downwards and outwards towards the probe 16. Simultaneously, the second concave part 821 drives the base 822 and the sponge strip 824 on one side to move downwards and outwards towards the probe 16. This continues until the sponge strip 824 is in contact with the outer side of the probe 16. The base 822 and sponge strip 824 continue to move downwards and outwards towards the probe 16, resulting in the sponge strip 824 fully contacting and compressing the sponge. This allows the sponge strip 824 to wipe away water droplets from the outside of the probe 16, causing the water stored in the sponge strip 824 to be squeezed out from the arc-shaped groove 823 and fall into the inner cavity of the base 822. Figure 9 The sponge strip 824 in the middle is in an arc-shaped ring shape, which is in a compressed state, and the body of the sponge strip 824 is semi-circular.

[0035] The bottom of the inner cavity of the base 822 is provided with a drain hole 826. The drainage assembly 83 includes a base plate 831 installed at the bottom of the inner cavity of a fixed seat 1. The upper end of the base plate 831 is connected to a housing 832. The upper end of the housing 832 is symmetrically equipped with a sleeve 833. The upper end of the sleeve 833 is connected to the base 822. The lower end of the base plate 831 is connected to a drain pipe 834. The lower end of the drain pipe 834 passes through the fixed seat 1 and extends to the outside where a solenoid valve 835 is installed. The upper ends of both bases 822 are provided with limit holes 825. The upper ends of the housings 832 are symmetrically equipped with limit posts 84 that are inserted into them.

[0036] While the sponge strip 824 wipes away water droplets on the outside of the probe 16, it moves downwards. Meanwhile, the base 822 moves downwards stably and synchronously through the limiting hole 825 under the limiting post 84. The water in the base 822 is drained from the drain hole 826 to the sleeve 833, thus accumulating in the inner cavity of the housing 832. The solenoid valve 835 is opened periodically to drain the water from the drain pipe 834.

[0037] Reference Figure 1-2 As shown in Figures 11-12, a second connecting pipe 4 is connected to one side of the fixed base 1. The second connecting pipe 4 is connected to the pipe body 10 through the assembly assembly 9. The assembly assembly 9 includes a third mounting plate 91 and a fourth mounting plate 92 that are respectively connected to the second connecting pipe 4 and the pipe body 10. The outer side of the third mounting plate 91 is integrally connected to a first sealing ring 93 and a second sealing ring 94. A second sealing ring 95 is snapped between the first sealing ring 93 and the second sealing ring 94. The outer side of the fourth mounting plate 92 is provided with a first annular groove 96 that fits into the first sealing ring 93 and the second sealing ring 94. The inner cavity of the first annular groove 96 is provided with a second annular groove 97 that fits into the second sealing ring 95. Nut grooves 98 are provided at equal intervals on the outer side of the fourth mounting plate 92. A second nut 99 is placed in the inner cavity of each nut groove 98. The third mounting plate 91 is screwed to multiple second nuts 99 through multiple sets of second bolts 910.

[0038] A sealing assembly is achieved between the third mounting plate 91 on the outside of the second connecting pipe 4 and the fourth mounting plate 92 on the pipe body 10. Specifically, the first sealing ring 93 and the second sealing ring 94 on the outside of the third mounting plate 91, which are connected to the second sealing ring 95, are respectively inserted into the first annular groove 96 and the second annular groove 97 on the outside of the fourth mounting plate 92, effectively improving the sealing effect of the assembly. Subsequently, the third mounting plate 91 and the fourth mounting plate 92 are screwed together by multiple sets of second bolts 910 and second nuts 99 to seal and fix the third mounting plate 91 and the fourth mounting plate 92, thereby facilitating the stable delivery of steam from the pipe body 10 to the second connecting pipe 4.

[0039] Working Principle: In this invention, during power generation, the high-pressure steam generated by the thermal power unit is transported to the turbine through pipe 10. During this process, the steam temperature in pipe 10 needs to be monitored in real time. This is achieved through the probe 16 of temperature sensor 5. As the high-pressure steam is transported, it continuously impacts the impeller 73. Due to the excessive steam pressure, the impeller 73 rotates upon impact. The impeller 73 then drives the drive shaft 72 and its outer first bevel gear 74 to rotate. The first bevel gear 74, in turn, drives the second bevel gear 75 and its inner transmission shaft 76 to rotate. The transmission shaft... After rotation, the fixed bar 811 rotates, which in turn drives the fixed post 812 to rotate. With the fixed frame bar 813 in a limited position by its own movable insertion into the first positioning post 8110, when the fixed post 812 moves in a circular motion with the fixed bar 811, the fixed post 812 pushes the outer fixed frame bar 813 to move vertically to its limit. This causes the fixed frame bar 813 to drive the fixed ring 815 to move vertically via the connecting frame 814. The fixed ring 815, under the limiting insertion of the second positioning post 8111, further improves the stability of the movement. When the fixed ring 815 moves vertically, the pin in the inner cavity of the outer mounting groove 816 of the fixed ring 815 drives the movable bar 817... As one end moves downward, the other end of the movable bar 817 drives the movable rod 818 downward via the connector. Simultaneously, the lower parts of the corresponding sides of the two movable rods 818 rotate in the same direction. This facilitates the movable rods 818 driving the dewatering assembly 82 to move towards the outside of the probe 16 and perform the dewatering operation. Specifically, the lower parts of the two movable rods 818 drive the pin and the second concave part 821 downward while moving towards the outside of the probe 16. Meanwhile, the second concave part 821 drives the base 822 and the sponge strip 824 on one side downward while moving towards the outside of the probe 16. This continues until the sponge strip 824 is in contact with the outside of the probe 16, at which point the base 822 and the sponge strip 824... As the sponge strip 824 continues to move downwards and outwards towards the probe 16, it fully adheres to and compresses the outer side of the probe 16. This allows the sponge strip 824 to wipe away water droplets from the probe 16, causing the water stored in the sponge strip 824 to be squeezed out and fall from the arc groove 823 into the inner cavity of the base 822. This facilitates the continuous wiping of water droplets from the probe 16 by the sponge strip 824, preventing water droplets from affecting the accuracy of the probe's temperature data detection and effectively improving the performance. Subsequently, the water in the base 822 drains from the drain hole 826 into the sleeve 833, thus accumulating in the inner cavity of the housing 832. The solenoid valve 835 is periodically opened to drain the water from the drain pipe 834.

[0040] The embodiments described above are merely illustrative of specific implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A steam temperature measuring device for a thermal power plant, comprising two fixed bases (1), a first connecting pipe (3) connected between the two fixed bases (1), a second connecting pipe (4) respectively connected to the sides of the two fixed bases (1), and a temperature sensor (5) mounted on one of the fixed bases (1) with a probe (16) extending inside it, characterized in that: It also includes a drive mechanism (7) and a dewatering mechanism (8) disposed in another fixed base (1). The drive mechanism (7) is used to drive the dewatering mechanism (8) to operate by utilizing the kinetic energy of the flowing steam. The dewatering mechanism (8) includes a lifting assembly (81) and a dewatering assembly (82). The lifting assembly (81) includes a fixed ring (815) driven by the drive mechanism (7). The fixed ring (815) is movably connected to the two dewatering assemblies (82) through a squeezing structure. The two dewatering assemblies (82) are symmetrically arranged on both sides of the probe (16). Each dewatering assembly (82) includes a sponge strip (824). The sponge strip (824) moves downward along the surface of the probe (16) through the fixed ring (815) and cooperates with the squeezing structure to wipe the probe (16) and squeeze out water.

2. A steam temperature measuring device for a thermal power plant as claimed in claim 1, characterized in that: The lifting assembly (81) includes a fixing strip (811) connected to the drive mechanism (7). A fixing post (812) is connected to the outside of the fixing strip (811). A fixing frame strip (813) is movably sleeved on the outside of the fixing post (812). A fixing ring (815) is connected to the outside of the fixing frame strip (813) through a connecting frame (814). A first positioning post (8110) is symmetrically inserted into the upper end of the fixing frame strip (813). A second positioning post (8111) is inserted into the upper end of the fixing ring (815). The lower ends of the first positioning post (8110) and the second positioning post (8111) are both installed at the bottom of the inner cavity of the fixing seat (1).

3. A steam temperature measuring device for a fossil fuel power plant as recited in claim 2, wherein: The extrusion structure includes a first concave part (819) symmetrically installed on the lower end of the top surface inside the fixed base (1). The first concave part (819) is movably connected to a movable rod (818) by a pin. The movable rod (818) is rotatably connected to a movable strip (817) by a connector. The outer side of the fixed ring (815) is symmetrically provided with an installation groove (816). The inner cavity of the installation groove (816) is movably connected to the movable strip (817) by a pin.

4. A steam temperature measuring device for a fossil fuel power plant as recited in claim 3, wherein: The drive mechanism (7) includes bearing seats (71) installed on both sides of the inner cavity of a fixed seat (1). The bearing seats (71) are rotatably connected to a drive shaft (72). An impeller (73) and a first bevel gear (74) are installed on the outer side of the drive shaft (72). A second bevel gear (75) meshes with the outer side of the first bevel gear (74). A transmission shaft (76) is installed in the middle of the second bevel gear (75). The transmission shaft (76) passes through the first connecting pipe (3) and extends to the inner cavity of the fixed seat (1) where the probe (16) is located, and is connected to the fixing strip (811).

5. A steam temperature measuring device for a fossil fuel power plant as recited in claim 4, wherein: The dewatering assembly (82) includes two second concave parts (821) rotatably connected to a movable rod (818) via a pin. The two second concave parts (821) are respectively connected to a base (822). An arc groove (823) is provided on one side of the base (822). The sponge strip (824) is adhered to the inner wall of the arc groove (823). The arc groove (823) is connected to the inner cavity of the base (822). A drain hole (826) is provided at the bottom of the inner cavity of the base (822). Limiting holes (825) are provided at the upper end of the base (822). Limiting posts (84) that are inserted into the upper end of the housing (832) are symmetrically installed thereon.

6. A steam temperature measuring device for a fossil fuel power plant as recited in claim 5, wherein: The water removal mechanism (8) also includes a drainage assembly (83), which includes a base plate (831) installed at the bottom of the inner cavity of a fixed seat (1). The upper end of the base plate (831) is connected to a housing (832), and the upper end of the housing (832) is symmetrically equipped with sleeves (833). The upper end of the sleeves (833) is connected to a drain hole (826), and the lower end of the base plate (831) is connected to a drain pipe (834). The lower end of the drain pipe (834) passes through the fixed seat (1) and extends to the outside where a solenoid valve (835) is installed.

7. The steam temperature measuring device for a thermal power plant as described in claim 6, characterized in that: Both of the fixed seats (1) are provided with cover plates (2) at their upper ends. A support assembly (6) is installed at the upper end of one of the cover plates (2), and a first concave part (819) is symmetrically installed at the lower end of the cover plate (2). The temperature sensor (5) is installed at the upper end of the support assembly (6). The support assembly (6) includes a support sleeve (61) installed at the upper end of the fixed seat (1). A first mounting plate (62) is integrally connected to the upper outer side of the support sleeve (61). A second mounting plate (64) is installed on the outer side of the temperature sensor (5). A groove (63) is provided at the upper end of the first mounting plate (62). A sealing ring (65) is embedded in the inner cavity of the groove (63). The second mounting plate (64) is passed through the first mounting plate (62) by multiple sets of first bolts (66) and screwed with a first nut (67).

8. A steam temperature measuring device for a fossil fuel power plant as recited in claim 7, wherein: The upper side of the inner cavity of the fixed seat (1) is provided with an L-shaped square groove (11). The inner cavity of the L-shaped square groove (11) is fitted with a second square washer (14). The upper end of the second square washer (14) is integrally connected with a first square washer (13). The upper end of the L-shaped square groove (11) is provided with threaded holes (12) around its perimeter. The cover plate (2) is threaded through the first square washer (13) and connected to the threaded holes (12) by four sets of third bolts (15).

9. A steam temperature measuring device for a fossil fuel power plant as recited in claim 1, wherein: The second connecting pipe (4) is connected to a pipe body (10) for accessing steam via an assembly assembly (9). The assembly assembly (9) includes a third mounting plate (91) and a fourth mounting plate (92) respectively connected to the second connecting pipe (4) and the pipe body (10). The outer side of the third mounting plate (91) is integrally connected with a first sealing ring (93) and a second sealing ring (94). A second sealing ring (95) is snapped between the first sealing ring (93) and the second sealing ring (94). The fourth mounting plate (92) is connected to the pipe body (10) for accessing steam via an assembly assembly (9). 2) The outer side is provided with a first annular groove (96) that fits into the first sealing ring (93) and the second sealing ring (94). The inner cavity of the first annular groove (96) is provided with a second annular groove (97) that fits into the second sealing ring (95). The outer side of the fourth mounting plate (92) is provided with nut grooves (98) at equal intervals. The inner cavity of each nut groove (98) is provided with a second nut (99). The third mounting plate (91) is connected to multiple second nuts (99) by multiple sets of second bolts (910).

10. A steam temperature measuring device for a fossil fuel power plant as recited in claim 2, wherein: The outer side of the drive shaft (76) is movably sleeved with a first support seat (77) and a second support seat (78), and the first support seat (77) and the second support seat (78) are respectively installed at the bottom of the inner cavity of the two fixed seats (1).

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