An online monitoring device for hydrogen leakage from the outer end cover of a hydrogen-cooled generator

Abstract

The utility model relates to the technical field of hydrogen leakage monitoring equipment, specifically an online monitoring device for hydrogen leakage of the outer end cover of a hydrogen-cooled generator, comprising a support frame, a rotating frame is movably connected to the top left side of the support frame, a movable box is fixedly connected to the lower left side of the rotating frame, a hydrogen detector is arranged above the left side of the rotating frame, a transmission box is fixedly connected to the top right side of the support frame, a control console is fixedly connected to the front side of the transmission box, an adjustment mechanism is arranged inside the movable box, and a rotation mechanism is arranged inside the transmission box. The utility model realizes the sliding adjustment and rotation monitoring of the hydrogen detector, and improves the adjustability and efficiency of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen leakage monitoring equipment, in particular to an online monitoring device for hydrogen leakage of an outer end cover of a hydrogen-cooled generator. Background Art

[0002] Generators generate heat during operation. If the heat cannot be dissipated, the temperature of the generator will rise, threatening the normal operation of the unit. Therefore, an additional cooling system must be added to take away the heat in the generator. Modern large units basically use hydrogen as a cooling medium. Due to the fast diffusion and strong penetration ability of hydrogen, the horizontal joint surface of the outer end cover is in poor contact, resulting in hydrogen leakage from the outer end cover. Therefore, we need to use hydrogen leakage online detection equipment for the outer end cover of hydrogen-cooled generators.

[0003] The existing device mainly monitors the hydrogen leakage of the cooling water tank through the hydrogen concentration sensor. The existing technology is similar to a generator stator cooling water tank hydrogen leakage monitoring device. The structure with patent number CN216978267U includes an exhaust pipeline, one end of the exhaust pipeline is connected to the top of the generator stator cooling water tank, and the other end of the exhaust pipeline is connected to the exhaust outlet pipe section via a water vapor condensation pipe section, a condensate automatic drain pipe, and a hydrogen leakage detection sensor pipe section in sequence. A number of water vapor condensation components are arranged in the water vapor condensation pipe section, and a hydrogen concentration sensor and a gas flow sensor are arranged in the hydrogen leakage detection sensor pipe section. The device can monitor the hydrogen leakage of the generator stator cooling water tank, but the device still has areas that can be optimized.

[0004] The existing devices mainly fix the hydrogen monitor at the hydrogen leakage point for real-time monitoring, which makes it difficult for some devices to drive the hydrogen monitor to rotate around the outer end cover, resulting in some devices effectively monitoring all directions of the outer end cover. At the same time, some devices are difficult to adjust according to the radius of the generator outer end cover, resulting in some hydrogen monitors being difficult to approach the joint of the outer end cover, reducing the working efficiency and practicality of the device. Therefore, in order to solve the above problems, an online monitoring device for hydrogen leakage of the outer end cover of a hydrogen-cooled generator is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide an online monitoring device for hydrogen leakage of the outer end cover of a hydrogen-cooled generator, so as to solve the problem that the existing devices in the prior art mentioned in the above background technology mainly fix the hydrogen monitor at the hydrogen leakage point for real-time monitoring, making it difficult for some devices to drive the hydrogen monitor to rotate around the outer end cover, thereby causing some devices to effectively monitor all directions of the outer end cover, and at the same time, some devices are difficult to adjust according to the radius of the outer end cover of the generator, thereby causing some hydrogen monitors to be difficult to approach the joints of the outer end cover.

[0006] To achieve the above object, the utility model provides the following technical solutions: an online monitoring device for hydrogen leakage of an outer end cover of a hydrogen-cooled generator, comprising a support frame, a rotating frame is movably connected to the left side of the top of the support frame, a movable box is fixedly connected to the lower left side of the rotating frame, a hydrogen detector is arranged on the upper left side of the rotating frame, a transmission box is fixedly connected to the right side of the top of the support frame, and a control console is fixedly connected to the front side of the transmission box;

[0007] An adjusting mechanism is provided inside the movable box, and the adjusting mechanism includes a first motor, and the right side of the first motor is fixedly connected to the left side of the movable box. A rotating mechanism is provided inside the transmission box, and the rotating mechanism includes a second motor, and the left side of the second motor is fixedly connected to the right side of the transmission box.

[0008] Preferably, a movable shaft is fixedly connected to the middle portion of the right side of the first motor, and the right end of the movable shaft passes through the movable box and is fixedly connected to the first bevel gear.

[0009] Preferably, the right side of the first bevel gear is meshedly connected with a second bevel gear, the inner wall of the second bevel gear is fixedly connected with a movable screw rod, and the bottom end of the movable screw rod is movably connected to the bottom of the inner wall of the movable box.

[0010] Preferably, the top end of the movable screw rod passes through the movable box and is sleeved with a lifting screw barrel, the top end of the lifting screw barrel is fixedly connected to a fixed seat, the rear side of the fixed seat is slidably connected to the front side of the rotating frame, and the bottom of the hydrogen detector is fixedly connected to the top of the fixed seat.

[0011] Preferably, a transmission worm is fixedly connected to the middle part of the left side of the second motor, the left end of the transmission worm is movably connected to the inner wall of the transmission box, and a transmission worm wheel is meshingly connected to the upper part of the outer wall of the transmission worm.

[0012] Preferably, a rotating shaft is fixedly connected to the middle part of the front side of the transmission worm gear, the front end of the rotating shaft passes through the support frame and is fixedly connected to a main gear, the outer wall of the main gear is meshed with an internal gear, and the front side of the internal gear is fixedly connected to the rear side of the rotating frame.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model adjusts the first motor, movable shaft, first bevel gear, second bevel gear, movable screw, lifting screw barrel and fixed seat in the mechanism. The first motor is started through the control console to drive the movable shaft and the first bevel gear to rotate within a certain range. The meshing of the first bevel gear drives the second bevel gear and the movable screw to rotate within a certain range. The movable screw drives the lifting screw barrel, the fixed seat and the hydrogen detector to slide up and down, thereby realizing the sliding adjustment of the hydrogen detector. Part of the device can be adjusted according to the radius of the outer end cover of the generator, which is convenient for the hydrogen monitor to be close to the joint of the outer end cover, thereby improving the efficiency and practicality of the device.

[0015] 2. The utility model realizes rotation monitoring of the hydrogen detector by using the second motor, transmission worm, transmission worm wheel, rotating shaft, main gear and internal gear in the rotating mechanism. The second motor is started through the console to drive the transmission worm to limit rotation. The meshing of the transmission worm drives the transmission worm wheel, rotating shaft and main gear to limit rotation. The meshing of the main gear drives the internal gear, rotating frame and hydrogen detector to limit rotation, thereby realizing partial device rotation monitoring of the hydrogen detector. This allows the partial device to drive the hydrogen monitor to rotate around the outer end cover, which is convenient for the partial device to effectively monitor all directions of the outer end cover, thereby improving the adjustability and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front side perspective view of the structure of the utility model;

[0017] Figure 2 It is a front view cross-sectional stereoscopic diagram of the structure of the utility model;

[0018] Figure 3 It is a front view cross-sectional stereoscopic diagram of the local structure of the rotating frame and the adjusting mechanism of the utility model;

[0019] Figure 4 It is a rear cross-sectional stereoscopic view of the partial structure of the support frame and the rotating mechanism of the utility model.

[0020] In the figure: 11, support frame; 12, rotating frame; 13, movable box; 14, hydrogen detector; 15, transmission box; 16, control console; 2, adjustment mechanism; 21, first motor; 22, movable shaft; 23, first bevel gear; 24, second bevel gear; 25, movable screw; 26, lifting screw barrel; 27, fixed seat; 3, rotating mechanism; 31, second motor; 32, transmission worm; 33, transmission worm wheel; 34, rotating shaft; 35, main gear; 36, internal gear. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 , an embodiment provided by the utility model:

[0023] An online monitoring device for hydrogen leakage of an outer end cover of a hydrogen-cooled generator comprises a support frame 11, a rotating frame 12 is movably connected to the left side of the top of the support frame 11, a movable box 13 is fixedly connected to the lower left side of the rotating frame 12, a hydrogen detector 14 is arranged on the upper left side of the rotating frame 12, a transmission box 15 is fixedly connected to the right side of the top of the support frame 11, and a control console 16 is fixedly connected to the front side of the transmission box 15;

[0024] An adjustment mechanism 2 is provided inside the movable box 13. The adjustment mechanism 2 includes a first motor 21. The right side of the first motor 21 is fixedly connected to the left side of the movable box 13. A movable shaft 22 is fixedly connected to the middle of the right side of the first motor 21. The right end of the movable shaft 22 passes through the movable box 13 and is fixedly connected to a first bevel gear 23. Through this design, the first motor 21 drives the first bevel gear 23 to rotate in a limited position. The right side of the first bevel gear 23 is meshedly connected to the second bevel gear 24. The inner wall of the second bevel gear 24 is fixedly connected to a movable screw 25. The bottom end of the movable screw 25 is movably connected to the bottom of the inner wall of the movable box 13. Through this design, the second bevel gear 24 drives the movable screw 25 to rotate in a limited position. The top of the movable screw 25 passes through the movable box 13 and is sleeved with a lifting screw barrel 26. The top of the lifting screw barrel 26 is fixedly connected to a fixed seat 27. The rear side of the fixed seat 27 is slidably connected to the front side of the rotating frame 12. The bottom of the hydrogen detector 14 is fixedly connected to the top of the fixed seat 27. Through this design, the lifting screw barrel 26 drives the fixed seat 27 and the hydrogen detector 14 to slide up and down.

[0025] A rotating mechanism 3 is provided inside the transmission box 15, and the rotating mechanism 3 includes a second motor 31. The left side of the second motor 31 is fixedly connected to the right side of the transmission box 15, and a transmission worm 32 is fixedly connected to the middle part of the left side of the second motor 31. The left end of the transmission worm 32 is movably connected to the inner wall of the transmission box 15, and a transmission worm wheel 33 is meshedly connected to the upper outer wall of the transmission worm 32. Through this design, the second motor 31 drives the transmission worm 32 to rotate in a limited position, and a rotating shaft 34 is fixedly connected to the middle part of the front side of the transmission worm wheel 33. The front end of the rotating shaft 34 passes through the support frame 11 and is fixedly connected to a main gear 35. The outer wall of the main gear 35 is meshedly connected to an internal gear 36, and the front side of the internal gear 36 is fixedly connected to the rear side of the rotating frame 12. Through this design, the internal gear 36 drives the rotating frame 12 and the hydrogen detector 14 to rotate in a limited position.

[0026] Working principle: When the hydrogen detector 14 needs to be slidably adjusted, the first motor 21 is first started through the control console 16. The first motor 21 drives the movable shaft 22 to limit rotation, and the movable shaft 22 drives the first bevel gear 23 to rotate synchronously. The first bevel gear 23 engages and drives the second bevel gear 24 to rotate. The second bevel gear 24 drives the movable screw 25 to limit rotation. The movable screw 25 drives the lifting screw barrel 26 to slide up and down. The lifting screw barrel 26 drives the fixed seat 27 and the hydrogen detector 14 to slide up and down, thereby realizing the sliding adjustment operation of the hydrogen detector 14.

[0027] When it is necessary to monitor the rotation of the hydrogen detector 14, first start the second motor 31 through the control console 16, the second motor 31 drives the transmission worm 32 to rotate in a limited position, the transmission worm 32 engages to drive the transmission worm wheel 33 to rotate, the transmission worm wheel 33 drives the rotating shaft 34 to rotate in a limited position, the rotating shaft 34 drives the main gear 35 to rotate synchronously, the main gear 35 engages to drive the internal gear 36 to rotate, the internal gear 36 drives the rotating frame 12 and the hydrogen detector 14 to rotate in a limited position, thereby realizing the rotation monitoring operation of the hydrogen detector 14, and the operation ends here.

[0028] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. An online monitoring device for hydrogen leakage of an outer end cover of a hydrogen-cooled generator, comprising a support frame (11), characterized in that: A rotating frame (12) is movably connected to the left side of the top of the support frame (11); a movable box (13) is fixedly connected to the lower left side of the rotating frame (12); a hydrogen detector (14) is provided on the upper left side of the rotating frame (12); a transmission box (15) is fixedly connected to the right side of the top of the support frame (11); a control console (16) is fixedly connected to the front side of the transmission box (15); an adjustment mechanism (2) is provided inside the movable box (13); the adjustment mechanism (2) comprises a first motor (21); the right side of the first motor (21) is fixedly connected to the left side of the movable box (13); A rotating mechanism (3) is provided inside the transmission box (15), and the rotating mechanism (3) comprises a second motor (31). The left side of the second motor (31) is fixedly connected to the right side of the transmission box (15). A transmission worm (32) is fixedly connected to the middle part of the left side of the second motor (31). The left end of the transmission worm (32) is movably connected to the inner wall of the transmission box (15). A transmission worm wheel (33) is meshedly connected to the upper part of the outer wall of the transmission worm (32). A rotating shaft (34) is fixedly connected to the middle part of the front side of the transmission worm wheel (33). The front end of the rotating shaft (34) passes through the support frame (11) and is fixedly connected to a main gear (35). The outer wall of the main gear (35) is meshedly connected to an internal gear (36). The front side of the internal gear (36) is fixedly connected to the rear side of the rotating frame (12).

2. The online monitoring device for hydrogen leakage of the outer end cover of a hydrogen-cooled generator according to claim 1 is characterized in that: A movable shaft (22) is fixedly connected to the middle portion of the right side of the first motor (21); the right end of the movable shaft (22) passes through the movable box (13) and is fixedly connected to the first bevel gear (23).

3. The online monitoring device for hydrogen leakage of the outer end cover of a hydrogen-cooled generator according to claim 2 is characterized in that: The right side of the first bevel gear (23) is meshedly connected with a second bevel gear (24), the inner wall of the second bevel gear (24) is fixedly connected with a movable screw rod (25), and the bottom end of the movable screw rod (25) is movably connected to the bottom of the inner wall of the movable box (13).

4. The online monitoring device for hydrogen leakage of the outer end cover of a hydrogen-cooled generator according to claim 3 is characterized by: The top end of the movable screw rod (25) passes through the movable box (13) and is sleeved with a lifting screw barrel (26); the top end of the lifting screw barrel (26) is fixedly connected to a fixing seat (27); the rear side of the fixing seat (27) is slidably connected to the front side of the rotating frame (12); and the bottom of the hydrogen detector (14) is fixedly connected to the top of the fixing seat (27).

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