Oil leakage recovery device for bearing box of steam turbine

Abstract

The utility model discloses a steam turbine bearing box leaked oil recovery device, and relates to the related technical field of steam turbines. The device comprises an oil collecting tank, a U-shaped plate flush with the upper end face of the oil collecting tank is fixed to the left end face of the oil collecting tank, two lead screws arranged in a bilateral symmetry mode are rotationally arranged in the U-shaped plate, two clamping arc plates arranged in a front-back staggered mode are arranged in the U-shaped plate, moving strips are fixed to the lower end faces of the clamping arc plates, and the moving strips are rotationally connected with ball seats on the adjacent lead screws correspondingly. A main gear fixedly connected with the front end face of the lead screw is arranged in front of the U-shaped plate, a magnetic ring is arranged on the front end face of the main gear, and a positioning metal plate attracted with the magnetic ring is arranged on the front end face of the magnetic ring. According to the utility model, the oil receiving tank is placed in the gap position between the bearing box and the crankshaft, so that the function of accurately recovering leaked oil is realized, and meanwhile, the oil receiving tank can be conveniently and stably mounted through the opposite movement of the two clamping arc plates.

Description

Technical Field

[0001] The utility model belongs to the technical field related to steam turbines, and particularly relates to an oil leakage recovery device for a steam turbine bearing box. Background Technique

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle to become an accelerated air flow and then jets onto the blades, causing the rotor equipped with the blade row to rotate and do work externally at the same time. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship power plants. In order to ensure the stable operation of the bearing box of the steam turbine, oil is added for lubrication treatment, resulting in oil leakage, and a corresponding recovery device is used to recover the leaked oil.

[0003] However, when the existing recovery equipment is in use, due to the inability to accurately recover the oil leakage, there will be a situation of oil leakage. At the same time, when using the recovery equipment, since it does not have the function of assembling the equipment with the machine shaft, it is not convenient to disassemble and assemble the recovery equipment, thus unable to improve the stable installation of the oil collection tank. For this reason, we provide an oil leakage recovery device for a steam turbine bearing box to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an oil leakage recovery device for a steam turbine bearing box, which realizes the accurate recovery of oil leakage by placing the oil collection tank at the gap between the bearing box and the machine shaft, and at the same time, through the relative reverse movement of two clamping arc plates, it is convenient to stably install the oil collection tank.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model is an oil leakage recovery device for a steam turbine bearing box, including an oil collection tank; a U-shaped plate is fixed to the left end face of the oil collection tank and is flush with its upper end face. Two lead screws arranged symmetrically left and right are rotated inside the U-shaped plate. Two clamping arc plates arranged staggeredly front and back are arranged inside the U-shaped plate. A moving strip is fixed to the lower end face of the clamping arc plate, and the moving strip is respectively rotatably connected to the ball seats on the adjacent lead screws. A main gear fixed to the front end face of the lead screw is arranged in front of the U-shaped plate, and a driven gear meshing with the main gear is fixed to the front end face of the other lead screw. A magnetic ring is arranged directly in front of the main gear, a positioning metal plate adsorbed to it is arranged on the front end face of the magnetic ring, and an abutting column is fixed to the front end face of the main gear.

[0007] The utility model is further arranged such that a sealing cover is spirally arranged at the bottom pipe orifice position of the oil collection tank, and a plurality of rollers arranged in an array are rotatably arranged on the opposite end faces of the two clamping arc plates.

[0008] The present utility model is further configured such that a retaining hole is formed in the front end face of the abutting column, a movable circular opening is formed in the inner end face of the retaining hole, and the diameter of the movable circular opening is larger than the diameter of the retaining hole.

[0009] The present utility model is further configured such that a moving rod passing through the inner positions of the magnetic ring and the retaining hole is fixed at the middle position of the rear end face of the positioning metal plate, and a movable plate sliding inside the movable circular opening is fixed at the rear end face of the moving rod.

[0010] The present utility model is further configured such that a plurality of notches are formed in a circumferentially uniform distribution on the front end face of the movable plate, and a plurality of convex strips are fixed on the inner side surface of the movable circular opening and are respectively arranged at the positions of the notches.

[0011] The present utility model is further configured such that a spring sleeved on the moving rod is fixed on the front end face of the movable plate, and the front end face of the spring abuts against the inner end face of the movable circular opening.

[0012] The present utility model is further configured such that a connecting strip is fixed at the upper part of the front end face of the U-shaped plate, and the connecting strip is fixedly connected to the circumferential side of the magnetic ring.

[0013] The present utility model has the following beneficial effects:

[0014] When the present utility model is in use, the oil collecting tank is placed at the gap position between the bearing box and the machine shaft. Therefore, when oil leaks between the bearing box and the machine shaft, the oil will flow from the gap position into the oil collecting tank, and the oil collecting tank will recycle the oil, realizing the function of precise recycling.

[0015] When the present utility model is in use, the two clamping arc plates are placed at the two sides of the machine shaft at the same height. At this time, the positioning metal plate is controlled to work, and then the positioning metal plate will drive the main gear to rotate. Thus, the main gear will drive the driven gear to rotate, so that the two lead screws can rotate, and the two clamping arc plates can move relatively, so that the two clamping arc plates can clamp on the machine shaft, and then the oil collecting tank can be installed.

[0016] Of course, it is not necessary for any product implementing the present utility model to achieve all the above advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1It is a schematic structural diagram of an oil leakage recovery device for a steam turbine bearing box.

[0019] Figure 2 This is the structural diagram of the oil collection tank in the present utility model.

[0020] Figure 3 This is the structural diagram of the clamping arc plate in the present utility model.

[0021] Figure 4 This is the internal structural diagram of the main gear in the present utility model.

[0022] Figure 5 This is the structural diagram of the positioning metal plate in the present utility model.

[0023] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0024] 1 - oil collection tank, 101 - sealing cover, 102 - U-shaped plate, 103 - connecting bar, 104 - magnetic ring, 2 - lead screw, 3 - clamping arc plate, 301 - moving bar, 302 - roller, 4 - main gear, 401 - abutting column, 402 - movable circular opening, 403 - blocking hole, 404 - rib, 5 - positioning metal plate, 501 - moving rod, 502 - movable plate, 503 - notch, 504 - spring, 6 - driven gear. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model. Embodiment

[0026] Please refer to Figures 1 to 5 , the present utility model is an oil leakage recovery device for a steam turbine bearing box. By placing the oil collection tank 1 at the gap position between the bearing box and the machine shaft, the function of accurately recovering the oil leakage is realized. At the same time, through the relative reverse movement of the two clamping arc plates 3, it is convenient to stably install the oil collection tank 1.

[0027] Specifically, there is an oil collection tank 1; a U-shaped plate 102 flush with the upper end face is fixed to the left end face of the oil collection tank 1. Two symmetrically arranged lead screws 2 are rotatably arranged inside the U-shaped plate 102. Two clamping arc plates 3 arranged in a staggered front-back manner are arranged inside the U-shaped plate 102. A moving strip 301 is fixed to the lower end face of the clamping arc plate 3. The moving strip 301 is respectively rotatably connected to the ball seats on the adjacent lead screws 2. A main gear 4 fixedly connected to the front end face of the lead screw 2 is arranged in front of the U-shaped plate 102. A driven gear 6 meshing with the main gear 4 is fixed to the front end face of the other lead screw 2. A magnetic ring 104 is arranged directly in front of the main gear 4. A positioning metal plate 5 adsorbed to it is arranged on the front end face of the magnetic ring 104. A contact post 401 is fixed to the front end face of the main gear 4.

[0028] The operation process of this embodiment is as follows: Through the setting and use of the above structure, the oil collection tank 1 is placed at the gap position between the bearing box and the machine shaft. Therefore, when oil leaks between the bearing box and the machine shaft, the oil will flow from the gap position into the oil collection tank 1, and the oil collection tank 1 will recover and process the oil. At the same time, when positioning the oil collection tank 1, the two clamping arc plates 3 are placed on both sides at the same height as the machine shaft. At this time, the positioning metal plate 5 is controlled to work, and then the positioning metal plate 5 will drive the main gear 4 to rotate. Thus, the main gear 4 will drive the driven gear 6 to rotate, so that the two lead screws 2 can rotate, and in this way, the two clamping arc plates 3 can move relatively, so that the two clamping arc plates 3 can clamp on the machine shaft, and then the oil collection tank 1 can be installed.

[0029] Furthermore, a sealing cover 101 is spirally arranged at the bottom pipe orifice position of the oil collection tank 1. A plurality of rollers 302 arranged in an array are rotatably arranged on the opposite end faces of the two clamping arc plates 3. When the oil inside the oil collection tank 1 needs to be taken out, the sealing cover 101 can be rotated, and then the port at the bottom of the oil collection tank 1 can be opened to take out the oil inside. At the same time, the positioning metal plate 5 is adsorbed to the magnetic ring 104, so that the lead screw 2 will not rotate randomly, and then the two clamping arc plates 3 can stably clamp on the machine shaft.

[0030] Furthermore, a connecting strip 103 is fixed to the upper part of the front end face of the U-shaped plate 102, and the connecting strip 103 is fixedly connected to the periphery of the magnetic ring 104. The magnetic ring 104 is limited by the connecting strip 103, so that the magnetic ring 104 can be stably located between the positioning metal plate 5 and the contact post 401, ensuring that the positioning metal plate 5 is stably adsorbed to the magnetic ring 104. Embodiment

[0031] Please refer to Figure 2 、 Figure 4 and Figure 5, on the basis of Embodiment 1, through the contact between the convex strip 404 and the notch 503, the movable plate 502 and the abutting column 401 are combined, so that the positioning metal plate 5 can easily drive the abutting column 401 to rotate.

[0032] Specifically, a retaining hole 403 is formed in the front end face of the abutting column 401, a movable circular hole 402 is formed in the inner end face of the retaining hole 403, and the diameter of the movable circular hole 402 is larger than the diameter of the retaining hole 403. A moving rod 501 passing through the magnetic ring 104 and the inner position of the retaining hole 403 is fixed at the middle position of the rear end face of the positioning metal plate 5. A movable plate 502 sliding in the inner position of the movable circular hole 402 is fixed at the rear end face of the moving rod 501. A plurality of notches 503 arranged in a circumferential and evenly distributed manner are formed through the front end face of the movable plate 502. A plurality of convex strips 404 respectively arranged at the positions of the notches 503 are fixed on the inner side surface of the movable circular hole 402. A spring 504 sleeved on the moving rod 501 is fixed at the front end face of the movable plate 502, and the front end face of the spring 504 abuts against the inner end face of the movable circular hole 402.

[0033] The operation process of this embodiment is as follows: When it is necessary to control the rotation of the positioning metal plate 5, the positioning metal plate 5 is moved in a direction away from the magnetic ring 104, so that the positioning metal plate 5 is disconnected from the magnetic ring 104. At this time, the positioning metal plate 5 will drive the movable plate 502 to move inside the movable circular hole 402 through the moving rod 501. Therefore, after controlling the rotation of the positioning metal plate 5, the positioning metal plate 5 will drive the convex strip 404 to rotate through the convex mouth, and drive the abutting column 401 to rotate and move accordingly, so as to control the rotation of the main gear 4 driving the driven gear 6. At the same time, when the positioning metal plate 5 is released, the spring 504 at this time will push the movable plate 502 to move inside the movable circular hole 402, thereby driving the positioning metal plate 5 to be adsorbed to the magnetic ring 104 again.

[0034] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0035] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, according to the content of this specification, many modifications and variations can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. An oil leakage recovery device for a steam turbine bearing box, comprising an oil collection tank (1); characterized in that: A U-shaped plate (102) flush with the upper end face is fixed to the left end face of the oil collecting tank (1). Two symmetrically arranged lead screws (2) are rotatably arranged inside the U-shaped plate (102). Two clamping arc plates (3) arranged in a staggered manner in the front and back are arranged inside the U-shaped plate (102). A moving strip (301) is fixed to the lower end face of the clamping arc plate (3). The moving strips (301) are respectively rotatably connected to the ball seats on the adjacent lead screws (2). A main gear (4) fixedly connected to the front end face of the lead screw (2) is arranged in front of the U-shaped plate (102). A driven gear (6) meshing with the main gear (4) is fixed to the front end face of the other lead screw (2). A magnetic ring (104) is arranged directly in front of the main gear (4). A positioning metal plate (5) adsorbed to the magnetic ring (104) is arranged on the front end face of the magnetic ring (104). An abutting column (401) is fixed to the front end face of the main gear (4).

2. The oil leakage recovery device for a steam turbine bearing box according to claim 1, wherein A sealing cover (101) is spirally arranged at the bottom pipe orifice position of the oil collecting tank (1). A plurality of rollers (302) arranged in an array are rotatably arranged on the opposite end faces of the two clamping arc plates (3).

3. The oil leakage recovery device for a steam turbine bearing box according to claim 1, characterized in that, A retaining hole (403) is formed in the front end face of the abutting column (401). A movable circular opening (402) is formed in the inner end face of the retaining hole (403), and the diameter of the movable circular opening (402) is larger than the diameter of the retaining hole (403).

4. The oil leakage recovery device for a steam turbine bearing box according to claim 3, characterized in that, A moving rod (501) passing through the magnetic ring (104) and the inside of the retaining hole (403) is fixed to the middle position of the rear end face of the positioning metal plate (5). A movable plate (502) sliding inside the movable circular opening (402) is fixed to the rear end face of the moving rod (501).

5. The oil leakage recovery device for a steam turbine bearing box according to claim 4, characterized in that, A plurality of annularly and evenly distributed notches (503) are formed through the front end face of the movable plate (502). A plurality of convex strips (404) respectively arranged at the positions of the notches (503) are fixed to the inner side surface of the movable circular opening (402).

6. The oil leakage recovery device for a steam turbine bearing box according to claim 4, characterized in that, A spring (504) sleeved on the moving rod (501) is fixed to the front end face of the movable plate (502), and the front end face of the spring (504) abuts against the inner end face of the movable circular opening (402).

7. A steam turbine bearing box oil leakage recovery device according to claim 1, characterized in that, A connecting strip (103) is fixed to the upper part of the front end face of the U-shaped plate (102), and the connecting strip (103) is fixedly connected to the periphery of the magnetic ring (104).

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