Pressure monitoring device for steam turbine lubricating oil tank

Abstract

The utility model relates to the technical field of pressure monitoring, in particular to a steam turbine lubricating oil tank pressure monitoring device which comprises an oil tank, a pump body, a pressure monitoring meter, a protection tank, a cover opening structure and a fixing structure, a filter screen is fixedly connected in the oil tank, and an alarm is fixedly connected to the top of the oil tank. A controller is fixedly connected to the top of the alarm and electrically connected with the alarm, a pump body is fixedly connected into the oil tank and located on the inner wall of the filter screen, a pressure monitoring meter is arranged on the top of the pump body and electrically connected with the controller, a protection box is fixedly connected to the top of the oil tank, and a top cover is rotationally connected to the top of the protection box. A cover opening structure used for opening the top cover is installed in the protection box, a fixing structure used for fixing the protection box is installed on the top of the oil tank, and the steam turbine lubricating oil tank pressure monitoring device has the advantages of being capable of achieving all-directional protection and convenient to maintain and uncover.

Description

TECHNICAL FIELD

[0001] The utility model relates to steam turbine lubricating oil tank pressure monitoring technical field especially relates to a steam turbine lubricating oil tank pressure monitoring device. BACKGROUND

[0002] In the operation process of steam turbine, lubricating oil plays a vital role, it not only can reduce the friction between mechanical parts, reduce wear and tear, prolong the service life of equipment, can also play the role of cooling, sealing and rust prevention etc., ensure that steam turbine runs stably and efficiently, and the pressure state of lubricating oil in the inside of lubricating oil tank as the key part of storing lubricating oil directly influences lubricating effect and overall performance of steam turbine;

[0003] The traditional steam turbine lubricating oil tank pressure monitoring mode still has the deficiency, the pressure monitoring part and controller in the traditional device are usually directly exposed outside, lack the necessary protection, are easy to be mistaken in the use process, and further lead to damage or production operation mistake, simultaneously, dust and impurities are easy to accumulate on the pressure monitoring table for a long time, influence the identification degree of pressure value of operating personnel, reduce the reliability of monitoring.

[0004] Therefore, it is necessary to provide a new steam turbine lubricating oil tank pressure monitoring device to solve the above technical problems. CONTENT OF UTILITY MODEL

[0005] In order to solve the above technical problems, the utility model provides a steam turbine lubricating oil tank pressure monitoring device.

[0006] The steam turbine lubricating oil tank pressure monitoring device provided by the utility model includes: an oil tank, a pump body, a pressure monitoring table, a protection box, an uncovering structure and a fixing structure, the inside of the oil tank is fixedly connected with a filter screen, the top of the oil tank is fixedly connected with an alarm, the top of the alarm is fixedly connected with a controller, the controller is electrically connected with the alarm, the inside of the oil tank is fixedly connected with the pump body, the pump body is located in the inner wall of the filter screen, the top of the pump body is provided with the pressure monitoring table, the pressure monitoring table is electrically connected with the controller, the top of the oil tank is fixedly connected with the protection box, the top of the protection box is rotatably connected with a top cover, the inside of the protection box is installed with the uncovering structure for opening the top cover, the top of the oil tank is installed with the fixing structure for fixing the protection box.

[0007] Preferably, the uncovering structure comprises: Y-shaped tracks, Z-shaped connecting rods, slide columns, first transmission rods, second transmission rods, rotating rods, worm gears and worms, the Y-shaped tracks are symmetrically formed in the inner wall of the protection box, Z-shaped connecting rods are symmetrically and fixedly connected to the bottom of the top cover, a plurality of groups of slide columns are fixedly connected to the sides of the Z-shaped connecting rods away from each other, the slide columns slide in the Y-shaped sliding grooves, the first transmission rods are rotatably connected to the bottom of the Z-shaped connecting rods, a long rod for transmission is fixedly connected between the two first transmission rods, the second transmission rods are rotatably connected to the bottom of the first transmission rods, the rotating rods are fixedly connected to the top of the second transmission rods, the rotating rods are rotatably connected to the protection box, the worm gears are fixedly connected to the outer wall of the rotating rods, and the worms are rotatably connected in the protection box and are in meshing connection with the worm gears.

[0008] Preferably, the fixing structure comprises: fixing blocks, insertion grooves, insertion columns, springs, L-shaped rods and pushing blocks, a plurality of groups of fixing blocks are symmetrically and fixedly connected to the top of the oil tank, the insertion grooves are formed in the fixing blocks, a plurality of groups of insertion columns are symmetrically and slidably connected to the bottom of the protection box, the insertion columns are inserted into the insertion grooves, the springs are fixedly connected in the insertion columns, one end of the springs is fixedly connected to the protection box, the L-shaped rods are fixedly connected to the inner wall of the insertion columns, and the pushing blocks are fixedly connected to one end of the L-shaped rods.

[0009] Preferably, one end of the worm extends out of the protection box and is fixedly connected with a knob.

[0010] Preferably, the first transmission rod is designed as a hollow structure, and the thickness of the second transmission rod is equal to the hollow thickness of the first transmission rod.

[0011] Preferably, the outer diameter of the spring is smaller than the inner diameter of the insertion column, and the inner diameter of the spring is greater than the diameter of the L-shaped rod.

[0012] Preferably, the top cover is designed as a transparent structure.

[0013] Preferably, a square groove for passing through the pipeline is formed in the bottom of one side of the protection box.

[0014] Compared with the related art, the steam turbine lubricating oil tank pressure monitoring device has the following beneficial effects:

[0015] All-round protection design:

[0016] Anti-mis-touch and dust: the protection box and the top cover are arranged to effectively protect the key components such as the pressure monitoring meter and the controller, so that the key components are prevented from being mis-touched in the use process, damage and production errors caused by mis-operation are prevented, meanwhile, the top cover and the protection box block the entry of dust and other impurities, so that the pressure monitoring meter is kept clean at all times, the identification degree of the pressure value by the operator is improved, and the reliability of the monitoring is enhanced.

[0017] Stable structure:

[0018] The fixing structure adopts a combination design of fixing block, slot, plug, spring, L-shaped rod and lever. The elastic force provided by the spring makes the plug tightly inserted into the slot, ensuring that the protection box is firmly fixed on the top of the oil tank. Even when the turbine is running and vibrates, the protection box will not loosen, providing a stable working environment for the pressure monitoring device, ensuring the normal operation of the monitoring equipment, and eliminating safety hazards.

[0019] Easy to maintain and convenient to open:

[0020] The opening structure utilizes a Y-shaped track, Z-shaped connecting rod, sliding column, first transmission rod, second transmission rod, rotating rod, worm gear, and worm to easily open and close the top cover by rotating the knob on the outside of the protective box. It is simple and convenient to operate, saves maintenance time and labor costs, and is less likely to damage the equipment during operation. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of the turbine lubricating oil tank pressure monitoring device provided by this utility model;

[0022] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the fuel tank.

[0023] Figure 3 for Figure 1 One of the schematic diagrams of the cross-sectional structure of the protective box shown;

[0024] Figure 4 for Figure 3 The diagram shows the structure of the Z-shaped connecting rod.

[0025] Figure 5 for Figure 1 The second schematic diagram of the cross-sectional structure of the protective box shown;

[0026] Figure 6 for Figure 5 The diagram shows the structure of the insert post.

[0027] The following are the labels in the diagram: 1. Oil tank; 2. Filter screen; 3. Alarm; 4. Controller; 5. Pump body; 6. Pressure monitoring gauge; 7. Protective box; 8. Top cover; 9. Y-shaped track; 10. Z-shaped connecting rod; 11. Sliding column; 12. First transmission rod; 13. Second transmission rod; 14. Rotating rod; 15. Worm gear; 16. Worm; 17. Fixing block; 18. Slot; 19. Insert post; 20. Spring; 21. L-shaped rod; 22. Toggle block; 23. Knob. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0030] Please see Figures 1 to 6 A pressure monitoring device for a steam turbine lubricating oil tank includes: an oil tank 1, a pump body 5, a pressure monitoring gauge 6, a protective box 7, a cover opening structure, and a fixing structure. A filter screen 2 is fixedly connected inside the oil tank 1. An alarm 3 is fixedly connected to the top of the oil tank 1. A controller 4 is fixedly connected to the top of the alarm 3 and is electrically connected to the alarm 3. The pump body 5 is fixedly connected inside the oil tank 1 and is located on the inner wall of the filter screen 2. A pressure monitoring gauge 6 is provided on the top of the pump body 5 and is electrically connected to the controller 4. A protective box 7 is fixedly connected to the top of the oil tank 1. A top cover 8 is rotatably connected to the top of the protective box 7. A cover opening structure for opening the top cover 8 is installed inside the protective box 7. A fixing structure for fixing the protective box 7 is installed on the top of the oil tank 1. The top cover 8 is transparent. A square groove for a pipe to pass through is provided on one side of the bottom of the protective box 7.

[0031] It should be noted that: to facilitate staff to observe the value of pressure monitoring gauge 6 at any time, the square groove design allows pump body 5 to extract and transport lubricating oil through pipeline to the mechanical parts that need lubrication.

[0032] Please see Figure 1 , Figure 3 and Figure 4 The opening structure includes: a Y-shaped track 9, a Z-shaped connecting rod 10, a sliding column 11, a first transmission rod 12, a second transmission rod 13, a rotating rod 14, a worm gear 15, and a worm 16. The inner wall of the protective box 7 is symmetrically provided with Y-shaped tracks 9. The bottom of the top cover 8 is symmetrically and fixedly connected with Z-shaped connecting rods 10. Multiple sets of sliding columns 11 are fixedly connected to the opposite sides of the Z-shaped connecting rods 10. All sliding columns 11 slide within the Y-shaped grooves. The bottom of each Z-shaped connecting rod 10 is rotatably connected to a first transmission rod 12. A fixed connection is established between two first transmission rods 12. The long rod used for transmission has a second transmission rod 13 rotatably connected to the bottom of the first transmission rod 12, and a rotating rod 14 fixedly connected to the top of the second transmission rod 13. The rotating rod 14 is rotatably connected to the protective box 7. A worm gear 15 is fixedly connected to the outer wall of the rotating rod 14. A worm 16 is rotatably connected inside the protective box 7. The worm gear 15 and the worm 16 are meshed. One end of the worm 16 extends out of the protective box 7 and is fixedly connected to a knob 23. The middle part of the first transmission rod 12 is hollow, and the thickness of the second transmission rod 13 is equal to the hollow thickness of the first transmission rod 12.

[0033] Need to explain: prevent the first transmission rod 12 in the process of rotation and the second transmission rod 13 with each other limit;

[0034] Please refer to Figure 1 、 Figure 2 、 Figure 5 And Figure 6 , the fixed structure includes: fixed block 17, slot 18, plug post 19, spring 20, L-shaped rod 21 and the block 22, the top of the oil tank 1 is symmetrically connected with a plurality of fixed blocks 17, the fixed block 17 is internally provided with a slot 18, the bottom of the protection box 7 is symmetrically connected with a plurality of plug posts 19, the plug post 19 is inserted into the slot 18, the plug post 19 is internally connected with a spring 20, one end of the spring 20 is fixedly connected with the protection box 7, the inner wall of the plug post 19 is fixedly connected with an L-shaped rod 21, one end of the L-shaped rod 21 is fixedly connected with a block 22, the outer diameter of the spring 20 is less than the inner diameter of the plug post 19, and the inner diameter of the spring 20 is greater than the diameter of the L-shaped rod 21;

[0035] Need to explain: the diameter of spring 20, plug post 19, L-shaped rod 21 is designed, so that the L-shaped rod 21 is fixedly connected with the inner wall of the plug post 19, and the normal operation of the spring 20 is not affected.

[0036] The working principle of the steam turbine lubricating oil tank pressure monitoring device is as follows:

[0037] Pressure monitoring and alarm

[0038] The pump body 5 is located in the oil tank 1 and in the inner wall of the filter screen 2, and its function is to extract the lubricating oil in the oil tank 1. During the extraction process, the pressure monitoring table 6 on the top of the pump body 5 monitors the pressure value of the lubricating oil in real time. The pressure monitoring table 6 is electrically connected with the controller 4. When the pressure value monitored by the pressure monitoring table 6 exceeds or is lower than the normal range set in advance, the pressure monitoring table 6 will transmit the pressure data to the controller 4. After the controller 4 receives the abnormal pressure signal, according to the preset program, the controller 4 sends an instruction to the alarm 3, and the alarm 3 starts to issue an alarm sound to remind the staff that the lubricating oil pressure is abnormal, so as to take timely measures;

[0039] Top cover 8 opening and closing:

[0040] When the pressure monitoring table 6 or other components need to be inspected, maintained, and the top cover 8 needs to be opened, turn the knob 23 outside the protection box 7, the knob 23 drives the fixed connection with the worm 16 to rotate, the worm 16 is meshed and connected with the worm gear 15, the worm 16 drives the worm gear 15 to rotate when rotating, the worm gear 15 is fixed on the outer wall of the rotating rod 14, so that the rotating rod 14 rotates, the rotating rod 14 drives the second transmission rod 13 to move when rotating, the second transmission rod 13 is rotatably connected with the first transmission rod 12, the bottom of the first transmission rod 12 is rotatably connected with the top of the second transmission rod 13, the top of the first transmission rod 12 is rotatably connected with the bottom of the Z-shaped connecting rod 10, with the movement of the second transmission rod 13, the Z-shaped connecting rod 10 is driven upward by the first transmission rod 12, a plurality of slide columns 11 are fixedly connected on one side of the Z-shaped connecting rod 10, the slide columns 11 slide in the Y-shaped track 9 symmetrically opened on the inner wall of the protection box 7, which plays a guiding and stabilizing role in the movement of the Z-shaped connecting rod 10, when the slide column 11 located above reaches the top of the Y-shaped track 9, the slide column 11 located below just reaches the three-way of the Y-shaped slide groove, continue to rotate the knob 23, the worm 16 will drive the slide column 11 located below to slide upward along the curved track of the Y-shaped slide groove through the worm gear 15, the first connecting rod and the second connecting rod, drive the Z-shaped connecting rod 10 to rotate around the slide column 11 located above, until the slide column 11 located below is flush with the slide column 11 located above, at this time the Z-shaped connecting rod 10 rotates ninety degrees, the top of the Z-shaped connecting rod 10 is fixedly connected with the bottom of the top cover 8, so as to realize the opening and closing of the top cover 8;

[0041] Protection box 7 fixing and dismounting:

[0042] The protection box 7 is installed on the top of the oil tank 1, and is fixed by the fixing structure. A plurality of fixing blocks 17 are fixedly connected symmetrically on the top of the oil tank 1, and an insertion slot 18 is formed in the fixing block 17. A plurality of insertion columns 19 are slidably connected symmetrically on the bottom of the protection box 7, the insertion column 19 can be inserted into the insertion slot 18, a spring 20 is fixedly connected in the insertion column 19, one end of the spring 20 is fixedly connected with the protection box 7, and the spring 20 provides a restoring force for the insertion column 19. When the insertion column 19 is inserted into the insertion slot 18, the insertion column 19 is tightly inserted into the insertion slot 18 under the action of the spring 20, so as to fix the protection box 7. An L-shaped rod 21 is fixedly connected with the inner wall of the insertion column 19, and a push block 22 is fixedly connected with one end of the L-shaped rod 21. When the protection box 7 needs to be dismounted, the L-shaped rod 21 is moved by pushing the push block 22, the insertion column 19 overcomes the elastic force of the spring 20 and is pulled out of the insertion slot 18, so as to realize the dismounting of the protection box 7. Since the outer diameter of the spring 20 is smaller than the inner diameter of the insertion column 19, and the inner diameter of the spring 20 is larger than the diameter of the L-shaped rod 21, it is ensured that the L-shaped rod 21 is fixedly connected with the inner wall of the insertion column 19, and does not affect the normal operation of the spring 20.

[0043] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A pressure monitoring device for a steam turbine lubricating oil tank, characterized in that, include: The oil tank (1) has a filter screen (2) fixedly connected inside it. The top of the oil tank (1) has an alarm (3) fixedly connected. The top of the alarm (3) has a controller (4) fixedly connected. The controller (4) is electrically connected to the alarm (3). Pump body (5) is fixedly connected inside oil tank (1), and pump body (5) is located on the inner wall of filter screen (2); Pressure monitoring gauge (6) is provided on the top of the pump body (5), and the pressure monitoring gauge (6) is electrically connected to the controller (4); The top of the oil tank (1) is fixedly connected to the protective box (7), and the top of the protective box (7) is rotatably connected to the top of the protective box (7); The protective box (7) has an opening structure for opening the top cover (8); The oil tank (1) is equipped with a fixed structure on top for fixing the protective box (7).

2. The turbine lubricating oil tank pressure monitoring device according to claim 1, characterized in that, The opening structure includes: a Y-shaped track (9), a Z-shaped connecting rod (10), a sliding column (11), a first transmission rod (12), a second transmission rod (13), a rotating rod (14), a worm gear (15), and a worm (16). The inner wall of the protective box (7) is symmetrically provided with Y-shaped tracks (9). The bottom of the top cover (8) is symmetrically fixedly connected with Z-shaped connecting rods (10). Multiple sets of sliding columns (11) are fixedly connected to the opposite sides of the Z-shaped connecting rods (10). All sliding columns (11) slide within the Y-shaped grooves. The Z-shaped connecting rods (10)... The bottom of each of the first transmission rods (12) is rotatably connected to the first transmission rod (12). A long rod for transmission is fixedly connected between the two first transmission rods (12). The bottom of the first transmission rod (12) is rotatably connected to the second transmission rod (13). The top of the second transmission rod (13) is fixedly connected to the rotating rod (14). The rotating rod (14) is rotatably connected to the protective box (7). A worm wheel (15) is fixedly connected to the outer wall of the rotating rod (14). A worm (16) is rotatably connected inside the protective box (7). The worm wheel (15) and the worm (16) are meshed together.

3. The turbine lubricating oil tank pressure monitoring device according to claim 1, characterized in that, The fixing structure includes: fixing block (17), slot (18), insert post (19), spring (20), L-shaped rod (21) and lever (22). Multiple sets of fixing blocks (17) are symmetrically fixedly connected to the top of the oil tank (1). The fixing block (17) has a slot (18) inside. Multiple sets of insert posts (19) are symmetrically slidably connected to the bottom of the protective box (7). The insert post (19) is inserted into the slot (18). The insert post (19) is fixedly connected to the inside of the insert post (19). One end of the spring (20) is fixedly connected to the protective box (7). The inner wall of the insert post (19) is fixedly connected to the L-shaped rod (21). One end of the L-shaped rod (21) is fixedly connected to the lever (22).

4. The turbine lubricating oil tank pressure monitoring device according to claim 2, characterized in that, One end of the worm (16) extends out of the protective box (7) and is fixedly connected to a knob (23).

5. The turbine lubricating oil tank pressure monitoring device according to claim 2, characterized in that, The first transmission rod (12) has a hollow design in the middle, and the thickness of the second transmission rod (13) is equal to the hollow thickness of the first transmission rod (12).

6. The turbine lubricating oil tank pressure monitoring device according to claim 3, characterized in that, The outer diameter of the spring (20) is smaller than the inner diameter of the insert (19), and the inner diameter of the spring (20) is larger than the diameter of the L-shaped rod (21).

7. The turbine lubricating oil tank pressure monitoring device according to claim 1, characterized in that, The top cover (8) is transparent.

8. The turbine lubricating oil tank pressure monitoring device according to claim 1, characterized in that, The bottom side of the protective box (7) has a square groove for the pipe to pass through.

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