Turbine last-stage humidity detection device
By introducing a combined structure of an exhaust pump and a heating rod into the final stage humidity detection device of a steam turbine, the problem of residual water vapor in the detection head interfering with the detection results is solved, and the accuracy and reliability of humidity detection are achieved.
Patent Information
- Application Number
- CN202422566037.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-10-23
AI Technical Summary
After the existing steam turbine final stage humidity detection device completes the test, the residual water vapor on the surface of the detection head will interfere with the test results and affect the detection accuracy.
A device including a sleeve, a cam, a motor, a spring return assembly, a telescopic block, a detection assembly, a dehumidification box, an air pump, a serpentine tube and a heating rod was designed. The air pump was used to draw in external air, and the heating rod in the serpentine tube was used to heat and dehumidify, thereby preventing the water vapor remaining in the detection head from affecting the next detection.
It effectively removes the residual water vapor in the detection head, ensures the accuracy of humidity detection, prevents interference with the test results, and improves the reliability of detection.
Smart Images
Figure CN223449910U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to turbine detection technical field, concretely is a turbine last stage humidity detection device. BACKGROUND
[0002] The turbine last stage refers to the last stage of steam process in the turbine, which determines the basic parameters such as steam pressure, temperature and mass flow rate of the turbine outlet, and the corrosion effect of moisture on the last stage impeller is very serious in the steam cycle of the turbine, the size of the turbine last stage humidity directly affects the thermal efficiency and performance of the unit, and then the humidity detection of the turbine last stage is an important measure to ensure the safe operation of the unit, assess the corrosion risk, monitor the performance of the unit and prevent water erosion, so in the operation and maintenance process of the turbine, attention should be paid to and the detection work of the last stage humidity should be strengthened.
[0003] The existing turbine last stage humidity detection device often needs to extend the detection head to the outside to contact the air outside and then detect when detecting the humidity of the turbine last stage, but after the detection is completed, some water vapor remains on the surface of the detection head, and the residual water vapor on the surface of the detection head will interfere with the detection result when the turbine last stage needs to be detected frequently.
[0004] Therefore, we propose a turbine last stage humidity detection device to solve the above problems. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a turbine last stage humidity detection device to solve the problem that the residual water vapor on the surface of the detection head interferes with the detection result.
[0006] To achieve the above object, the utility model provides the following technical scheme: a turbine last stage humidity detection device, including sleeve, the inner wall of sleeve is opened with long hole, the inside rotation of long hole is connected with cam, the inside fixed mounting of sleeve has motor, and the output end of motor and the top fixed connection of cam, the inside of sleeve is provided with spring reset assembly, the inside sliding connection of sleeve has telescopic block, and the bottom sliding connection of telescopic block has detection assembly, and the inside of telescopic block is opened with air slot, and the side wall of air slot is opened with long slot, and the inside fixed mounting of long slot has dehumidification box.
[0007] Preferably, the inside fixed mounting of dehumidification box has a heating rod, and the inside fixed connection of dehumidification box has a serpentine tube.
[0008] Preferably, the inside fixed mounting of long slot has a suction pump, the top sliding connection of sleeve has a long tube, and the fixed communication of one end of long tube and the input end of suction pump.
[0009] One end of the serpentine pipe is fixedly connected with the output end of the air extraction pump, the other end of the serpentine pipe is fixedly connected with a hose, and the other end of the hose is fixedly connected with the wide-mouth frame.
[0010] Preferably, the slide plate is slidably connected to the side wall of the air slot through sliding abutting.
[0011] Preferably, the side wall of the long slot is provided with a mounting groove, and an electric push rod is fixedly installed in the mounting groove.
[0012] Compared with the prior art, the utility model has the beneficial effects that:
[0013] 1、In the utility model, through setting air extraction pump, dehumidification box and serpentine pipe and other structures, heating rod carries out temperature rise and dehumidification to the air in the serpentine pipe, the air stays in the serpentine pipe for a long time, and then the air can be heated enough, and the residual water vapor in the air is evaporated, and then when the air is sprayed from the wide-mouth frame, the liquid remaining on the detection head of the detection assembly can be dried, and then the detection result is prevented from being interfered with when the next humidity detection is carried out.
[0014] 2、In the utility model, through setting electric push rod, slide plate and hose and other structures, the user can conveniently control the position of the wide-mouth frame, and then when the humidity detection is needed, the wide-mouth frame is moved to the edge position of the air slot, and the wide-mouth frame will not interfere with the movement process of the detection assembly and other structures, and when the detection assembly moves back to the sleeve, the wide-mouth frame is moved to the position of the detection head of the detection assembly, and then the detection head is sprayed to keep it dry. DRAWINGS
[0015] Figure 1 It is an overall three-dimensional structure schematic view of the utility model;
[0016] Figure 2 It is an internal structure schematic view of the utility model;
[0017] Figure 3 It is an internal structure schematic view of the utility model in the telescopic block;
[0018] Figure 4 It is an internal structure schematic view of the utility model in the telescopic block;
[0019] Figure 5 It is an internal structure schematic view of the utility model in the telescopic block.
[0020] In the figure: 1, sleeve; 2, long hole; 3, cam; 4, motor; 5, spring reset assembly; 6, telescopic block; 7, detection assembly; 8, empty slot; 9, long slot; 10, air pump; 11, dehumidification box; 12, long tube; 13, coiled tube; 14, heating rod; 15, hose; 16, wide-mouth frame; 17, mounting groove; 18, electric push rod; 19, sliding plate. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0022] Embodiment one: please refer to Figure 1 - Figure 3 A steam turbine last stage humidity detection device, including sleeve 1, sleeve 1 inner wall is set with long hole 2, long hole 2 inside rotationally connected with cam 3, sleeve 1 inside fixedly installed with motor 4, and the output end of motor 4 is fixedly connected with the top of cam 3, sleeve 1 inside is provided with spring reset assembly 5, sleeve 1 inside is slidably connected with telescopic block 6, and the bottom of telescopic block 6 is slidably connected with detection assembly 7, and detection assembly 7 side wall is provided with wedge, and the side wall of detection assembly 7 is fixedly connected with the moving end of limit assembly, and then limit assembly can limit the moving track of detection assembly 7, so that it can only move along the vertical direction, when the humidity of steam turbine last stage needs to be detected, cam 3 is rotated by motor 4, and then cam 3 pushes telescopic block 6 to move, and then detection assembly 7 moves, when the bottom of detection assembly 7 is not blocked by object, telescopic block 6 moves out of the inside of detection assembly 7, and then the humidity of steam turbine last stage is detected, and when detection assembly 7 completes detection, the inside of telescopic block 6 is moved by wedge, and the inside of telescopic block 6 is set with long slot 9, and long slot 9 inner wall is fixedly installed with dehumidification box 11, and dehumidification box 11 can dehumidify the inside of empty slot 8.
[0023] Dehumidification box 11 inner wall is fixedly installed with heating rod 14, and dehumidification box 11 inside is fixedly connected with coiled tube 13, and heating rod 14 can heat the space in the inside of dehumidification box 11, and then the air in the inside of coiled tube 13 is heated, and the setting of coiled tube 13 makes the air stay in the inside of dehumidification box 11 for a longer time, and then the air in the inside of coiled tube 13 is heated more fully.
[0024] The long slot 9 is internally fixedly installed with an air extraction pump 10, the sleeve 1 top is slidably connected with a long tube 12, one end of the long tube 12 is fixedly communicated with the input end of the air extraction pump 10, the sleeve 1 top is provided with a sliding hole, the long tube 12 slides on the sleeve 1 top through the sliding hole, the air extraction pump 10 can extract external air through the long tube 12, the long tube 12 is internally provided with an adsorption net frame, which can filter water vapor in external air to prevent external water vapor from entering the long tube 12.
[0025] One end of the serpentine pipe 13 is fixedly communicated with the output end of the air extraction pump 10, the other end of the serpentine pipe 13 is fixedly communicated with a hose 15, the other end of the hose 15 is fixedly communicated with a wide-mouth frame 16, the hose 15 is a telescopic tube body, which can move in extension and contraction following the movement of the wide-mouth frame 16, the wide-mouth frame 16 is arranged to make the gas range of the hose 15 wider.
[0026] In the embodiment: when the humidity of the last stage of the steam turbine needs to be detected, first, the motor 4 is started, the output end of the motor 4 drives the cam 3 to rotate, and then the telescopic block 6 is moved, so that the telescopic block 6 moves out of the sleeve 1 internally, and then the detection assembly 7 moves following the telescopic block 6, when the bottom of the detection assembly 7 moves out of the sleeve 1 internally, it falls into the telescopic block 6 under its own gravity, and then the detection assembly 7 detects the humidity of the last stage of the steam turbine, when the detection is completed, the cam 3 is rotated again, so that the telescopic block 6 is retracted into the sleeve 1 under the action of the spring return assembly 5, and the detection assembly 7 is retracted into the telescopic block 6 under the action of the wedge block and the limiting rod.
[0027] At this time, the heating rod 14 is started again, the heating rod 14 warms up the space in the dehumidification box 11, the air extraction pump 10 is started again, the air extraction pump 10 sucks external air into the long tube 12, and then the air is discharged into the hose 15 through the serpentine pipe 13, and then the air is sprayed out of the wide-mouth frame 16 following the hose 15, at this time, due to the special structure of the serpentine pipe 13, the air stays in the serpentine pipe 13 for a long time, so that the air can be sufficiently warmed up, and the residual water vapor in the air is evaporated, and then when the air is sprayed out of the wide-mouth frame 16, the residual liquid on the detection head of the detection assembly 7 can be dried, so as to prevent interference with the detection result when the humidity detection is performed again.
[0028] Embodiment two: this embodiment is improved on the basis of embodiment one, for details, please refer to Figure 3 - Figure 5 In the embodiment: the side wall of the air slot 8 is slidably connected with a sliding plate 19, the side wall of the sliding plate 19 is fixedly connected with the side wall of the wide-mouth frame 16, so that the sliding plate 19 drives the wide-mouth frame 16 to move when it moves, and the position of the wide-mouth frame 16 is controlled through the sliding plate 19.
[0029] The long slot 9 side wall is provided with a mounting groove 17, the mounting groove 17 is fixedly provided with an electric push rod 18, the movable end of the electric push rod 18 is fixedly connected with the side wall of the sliding plate 19, and then the position of the sliding plate 19 is adjusted through the electric push rod 18, so that the user can conveniently control the position of the wide-mouth frame 16; when the humidity needs to be detected, the wide-mouth frame 16 is moved to the edge position of the empty slot 8, so that the movement process of the detection assembly 7 and other structures is not interfered; and when the detection assembly 7 is moved back to the inside of the sleeve 1, the wide-mouth frame 16 is moved to the position of the detection head of the detection assembly 7, so that the detection head is sprayed to keep it dry.
[0030] In the embodiment: when the detection head part of the detection assembly 7 needs to be dehumidified, the wide-mouth frame 16 is located at the edge position of the empty slot 8 in the initial state, because the position of the wide-mouth frame 16 is far away from the detection head part, and other structures of the detection assembly 7 are still moving in the empty slot 8, so as not to hinder the movement of other structures; when the detection assembly 7 is not working, the electric push rod 18 is started again, the output end of the electric push rod 18 drives the sliding plate 19 to move, the sliding plate 19 drives the wide-mouth frame 16 to move and drives the hose 15 to move in and out, so that the wide-mouth frame 16 moves to a position close to the detection head part, so that the whole dehumidification process is more stable and fast.
[0031] Working principle: when the humidity of the last stage of the steam turbine needs to be detected, the cam 3 is first driven to rotate by the motor 4, and then the telescopic block 6 is pushed to make the detection assembly 7 extend out of the inside of the telescopic block 6, the detection assembly 7 detects the humidity of the last stage of the steam turbine, after the detection is completed, the cam 3 is rotated again, and the telescopic block 6 and the detection assembly 7 move back to the inside of the sleeve 1 under the action of the spring reset assembly 5, at this time, the heating rod 14, the air suction pump 10 and the electric push rod 18 are started, the air suction pump 10 sucks the air outside, and through the heating of the heating rod 14, the moisture in the air is evaporated and the temperature is increased, and then the air is sprayed out through the hose 15 and the wide-mouth frame 16, at this time, the wide-mouth frame 16 moves to a position close to the detection assembly 7 under the action of the electric push rod 18, so that the residual liquid and the like of the detection head part of the detection assembly 7 is blown dry.
[0032] The contents not described in detail in the specification belong to the prior art known by the person skilled in the art.
[0033] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A steam turbine final stage humidity detection device, comprising a sleeve (1), characterized in that: The inner wall of the sleeve (1) is provided with a long hole (2), a cam (3) is rotatably connected inside the long hole (2), a motor (4) is fixedly installed inside the sleeve (1), an output end of the motor (4) is fixedly connected to the top of the cam (3), a spring return assembly (5) is provided inside the sleeve (1), a telescopic block (6) is slidably connected inside the sleeve (1), a detection assembly (7) is slidably connected through the bottom of the telescopic block (6), an empty slot (8) is provided inside the telescopic block (6), a long slot (9) is provided on the side wall of the empty slot (8), and a dehumidification box (11) is fixedly installed on the inner wall of the long slot (9).
2. A steam turbine final stage humidity detection device according to claim 1, characterized in that: A heating rod (14) is fixedly mounted on the inner wall of the dehumidification box (11), and a serpentine tube (13) is fixedly connected to the interior of the dehumidification box (11).
3. A steam turbine final stage humidity detection device according to claim 2, characterized in that: An air pump (10) is fixedly installed inside the long groove (9), and a long tube (12) is slidably connected to the top of the sleeve (1), and one end of the long tube (12) is fixedly connected to the input end of the air pump (10).
4. A steam turbine final stage humidity detection device according to claim 3, characterized in that: One end of the serpentine tube (13) is fixedly connected to the output end of the air pump (10), the other end of the serpentine tube (13) is fixedly connected to a hose (15), and the other end of the hose (15) is fixedly connected to a wide-mouth frame (16).
5. The device for detecting humidity in the final stage of a steam turbine according to claim 4, characterized in that: The side walls of the empty slot (8) are slidably connected to each other with a slide plate (19), and the side walls of the slide plate (19) are fixedly connected to the side walls of the wide-mouth frame (16).
6. The device for detecting humidity of the final stage of a steam turbine according to claim 5, characterized in that: The side wall of the long slot (9) is provided with a mounting slot (17), an electric push rod (18) is fixedly installed inside the mounting slot (17), and the side wall of the slide plate (19) and the movable end of the electric push rod (18) are fixedly connected.