Liquid level observation device for lubricating oil tank of centrifugal pump

Abstract

The utility model relates to the technical field of lubricating oil tank liquid level observation for centrifugal pumps, and particularly discloses a centrifugal pump lubricating oil tank liquid level observation device which comprises a horizontal pipe communicated with a lubricating oil tank, one end, away from the lubricating oil tank, of the horizontal pipe is communicated with a vertical pipe, and the axis of the vertical pipe is perpendicular to the liquid level in the lubricating oil tank. An observation ring is arranged on the pipe wall of the vertical pipe, and a floating ball is arranged in the vertical pipe; a stand column is fixedly arranged on the outer wall of the floating ball. A plurality of observation sheets are arranged on the stand column; and the plurality of observation sheets are different in color. Compared with the prior art, the floating ball drives the stand column to float up and down, the color of the observation piece above the stand column is observed through the observation ring, the liquid level of the lubricating oil tank is determined, the problem that liquid level display is not visual and clear enough due to oil contamination is solved, the liquid level can be observed from multiple directions without being close to check, potential safety hazards are eliminated, and the inspection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level observation of a lubricating oil tank for a centrifugal pump, and specifically discloses a liquid level observation device for a lubricating oil tank of a centrifugal pump. Background Art

[0002] The pump shaft of a centrifugal pump will rotate at high speed and release a lot of heat during operation. The lubricating oil in the lubricating oil tank can play a role in heat dissipation, cooling and rotational lubrication. When there is too little lubricating oil in the tank, the risk of shaft explosion will increase and the life of the equipment will be reduced; when there is too much lubricating oil, it will generate additional load on the bearings and accelerate the wear of the equipment. At an excessively high oil level, it will accelerate the aging of the oil and increase the cost of maintenance. Therefore, whether the liquid level of the lubricating oil tank is within the specified range is an important part of the daily inspection of the equipment.

[0003] At present, a transparent viewing window is provided on the lubricating oil tank for directly observing the liquid level in the lubricating oil tank. At present, the viewing window of the lubricating oil tank used in the centrifugal pump needs to be approached from a single direction to the viewing window and the high-speed rotating pump shaft when observing, which has some potential dangers. In the prior art, there is also a liquid level gauge connected to the lubricating oil tank, which includes a glass tube fixed to the lubricating oil tank by a hollow bolt, an oil outlet is provided on the outer wall of the bolt, and the opening of the hollow bolt end is provided in the lubricating oil tank to guide the lubricating oil into the glass tube, and the liquid level is observed in the glass tube.

[0004] However, the transparent viewing window and glass tube are easily contaminated by crude oil and turned black, which makes the liquid level display unclear and requires close viewing, thus posing a safety hazard and affecting inspection efficiency. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides a centrifugal pump lubricating oil tank liquid level observation device to solve the problem that the transparent viewing window and glass tube are easily contaminated by crude oil and turned black, resulting in the liquid level display not being intuitive and clear enough, requiring close viewing, posing a safety hazard and affecting inspection efficiency.

[0006] To achieve the above purpose, the technical solution of the utility model is:

[0007] A centrifugal pump lubricating oil tank liquid level observation device includes a horizontal pipe connected to the lubricating oil tank, one end of the horizontal pipe away from the lubricating oil tank is connected to a vertical pipe, the axis of the vertical pipe is arranged perpendicular to the liquid surface in the lubricating oil tank, an observation ring is arranged on the pipe wall of the vertical pipe, a float is arranged in the vertical pipe; a column is fixedly arranged on the outer wall of the float; a plurality of observation pieces are arranged on the upper part of the column; the plurality of observation pieces are of different colors. The column is driven to float up and down by the float, and the color of the observation piece above the column is observed through the observation ring to determine the liquid level of the lubricating oil tank, which solves the problem that the liquid level display is not intuitive and clear due to oil pollution, and the liquid level can be observed from multiple directions without close inspection, thereby eliminating safety hazards and improving inspection efficiency.

[0008] Preferably, a disc is provided on the outer wall of the upper part of the column; the observation piece is placed on the disc, and a through hole is provided in the middle of the observation piece; the upper part of the column is arranged in the through hole. The arrangement of the disc facilitates the placement of the observation piece.

[0009] Preferably, the vertical pipe includes a connecting pipe; the side wall of the connecting pipe is connected to the horizontal pipe; the upper open end of the connecting pipe is threadedly provided with a top cover; a through hole is provided in the middle of the top cover; an observation pipe is clamped on the upper end of the top cover; an observation ring is provided on the observation pipe; a floating ball is provided in the connecting pipe; and the column extends into the observation pipe after passing through the top cover. The arrangement of the connecting pipe and the observation pipe facilitates the disassembly and assembly of the floating ball and the column.

[0010] Preferably, the inner diameter of the through hole of the top cover is larger than the outer diameter of the column; the outer diameter of the disc of the column is smaller than the inner diameter of the observation tube, so as to ensure that the float drives the column to float up and down smoothly.

[0011] Preferably, a groove is provided at the upper end of the top cover; a ring-shaped cleaning sheet is placed in the groove; a gap is provided between the inner wall of the cleaning sheet and the outer wall of the column; and an interference fit is provided between the outer wall of the cleaning sheet and the inner wall of the groove. After the float and the column are removed for inspection, the cleaning sheet can be used to clean the oil stains on the outer wall of the column; and the normal operation of the column can be ensured.

[0012] Preferably, an air pressure balance hole is provided at the upper end of the observation tube to ensure that the air pressure in the observation tube is stable when the column floats up and down.

[0013] Preferably, a bubble level is provided on the outer wall of the observation tube; the axis of the bubble level is perpendicular to the axis of the observation tube, so as to facilitate the adjustment of the axis of the vertical tube to be perpendicular to the liquid surface in the lubricating oil tank.

[0014] Preferably, the horizontal pipe includes a connecting pipe threadedly connected to the lubricating oil tank; the end of the connecting pipe away from the lubricating oil tank is threadedly connected to a locking ring; the end of the locking ring away from the connecting pipe is threadedly connected to an adjusting pipe; the end of the adjusting pipe away from the locking ring is threadedly connected to a connecting pipe. The adjusting pipe can be rotated to adjust the vertical pipe to be vertical, that is, to adjust the axis of the vertical pipe to be perpendicular to the liquid level in the lubricating oil tank.

[0015] Preferably, a sealing gasket is provided between the connecting pipe and the regulating pipe, and a sealing ring is provided at the connection between the regulating pipe and the connecting pipe to ensure the sealing of the connection.

[0016] Preferably, a hexagonal platform is provided on the connecting pipe to facilitate disassembly and assembly.

[0017] The beneficial effects of the utility model are as follows: the float drives the column to float up and down, and the color of the observation piece above the column is observed through the observation ring to determine the liquid level of the lubricating oil tank, which solves the problem that the liquid level display is not intuitive and clear due to oil pollution, and the liquid level can be observed from multiple directions without the need for close viewing, thereby eliminating safety hazards and improving inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the utility model in use state;

[0020] Figure 2 It is a schematic diagram of the structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the explosion structure of the utility model;

[0022] Figure 4 It is a cross-sectional structural schematic diagram of the utility model.

[0023] Description of reference numerals:

[0024] 1. Level pipe; 2. Connecting pipe; 3. Observation pipe; 4. Float; 5. Column; 6. Observation piece; 7. Observation ring; 8. Connecting pipe; 9. Adjusting pipe; 10. Locking ring; 11. Sealing gasket; 12. Sealing ring; 13. Top cover; 14. Groove; 15. Cleaning piece; 16. Air pressure balance hole; 17. Bubble level; 18. Lubricating oil tank. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] like Figure 1-4 As shown, a centrifugal pump lubricating oil tank liquid level observation device includes a horizontal pipe 1 connected to the lubricating oil tank 18, one end of the horizontal pipe 1 away from the lubricating oil tank 18 is connected to the vertical pipe, the axis of the vertical pipe is arranged perpendicular to the liquid surface in the lubricating oil tank 18, an observation ring 7 is arranged on the pipe wall of the vertical pipe, and a float 4 is arranged in the vertical pipe; a column 5 is fixedly arranged on the outer wall of the float 4; five observation pieces 6 are arranged on the upper part of the column 5; the five observation pieces 6 are of different colors. The column 5 is driven to float up and down by the float 4, and the color of the observation piece 6 above the column 5 is observed through the observation ring 7 to determine the liquid level of the lubricating oil tank 18, which solves the problem that the liquid level display is not intuitive and clear due to oil pollution, and the liquid level can be observed from multiple directions without close viewing, eliminating safety hazards and improving inspection efficiency. Among them, a disc is arranged on the upper outer wall of the column 5; the observation piece 6 is placed on the disc, and a through hole is arranged in the middle of the observation piece 6; the upper part of the column 5 is arranged in the through hole. The arrangement of the disc facilitates the placement of the observation piece 6.

[0027] In the above arrangement, the vertical pipe includes a connecting pipe 2; the side wall of the connecting pipe 2 is connected to the horizontal pipe; the upper open end of the connecting pipe 2 is threadedly provided with a top cover 13; a through hole is provided in the middle of the top cover 13; the upper end of the top cover 13 is clamped with an observation pipe 3; the observation ring 7 is provided on the observation pipe 3; the floating ball is provided in the connecting pipe 2; the column 5 passes through the top cover 13 and extends into the observation pipe 3. The arrangement of the connecting pipe 2 and the observation pipe 3 facilitates the disassembly and assembly of the floating ball 4 and the column 5. The inner diameter of the through hole of the top cover 13 is larger than the outer diameter of the column 5; the outer diameter of the disc of the column 5 is smaller than the inner diameter of the observation pipe 3, so as to ensure that the floating ball 4 drives the column 5 to float up and down smoothly. An air pressure balance hole 16 is provided at the upper end of the observation pipe 3. When the column 5 floats up and down, the air pressure in the observation pipe 3 is ensured to be stable. A bubble level 17 is provided on the outer wall of the observation pipe 3; the axis of the bubble level 17 is perpendicular to the axis of the observation pipe 3. It is convenient to adjust the axis of the vertical pipe to be perpendicular to the liquid level in the lubricating oil tank 18.

[0028] In order to facilitate cleaning of the column 5 after disassembly for maintenance and to ensure the normal operation of the column 5, a groove 14 is provided at the upper end of the top cover 13; a ring-shaped cleaning sheet 15 is placed in the groove 14; the inner wall of the cleaning sheet 15 and the outer wall of the column 5 are interference-fitted; a gap is provided between the outer wall of the cleaning sheet 15 and the inner wall of the groove 14. In this way, after removing the float 4 and the column 5, the maintenance personnel can clean the outer wall of the column 5 by manually moving the cleaning sheet 15.

[0029] The horizontal pipe 1 includes a connecting pipe 8 threadedly connected to the lubricating oil tank 18; the end of the connecting pipe 8 away from the lubricating oil tank 18 is threadedly connected to the locking ring 10; the end of the locking ring 10 away from the connecting pipe 8 is threadedly connected to the adjusting pipe 9; the end of the adjusting pipe 9 away from the locking ring 10 is threadedly connected to the connecting pipe 2. The adjusting pipe 9 is conveniently rotated to adjust the vertical pipe vertically, that is, to adjust the vertical pipe axis perpendicular to the liquid level in the lubricating oil tank 18. A sealing gasket 11 is provided between the connecting pipe 8 and the adjusting pipe 9; a sealing ring 12 is provided at the connection between the adjusting pipe 9 and the connecting pipe 2 to ensure the sealing of the connection. A hexagonal platform is provided on the connecting pipe 8 for easy disassembly and assembly.

[0030] Although the utility model is described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the utility model is not limited thereto. Without departing from the spirit and essence of the utility model, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the utility model, and these modifications or substitutions shall be within the scope of the utility model / any person of ordinary skill in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the utility model, and they shall be within the scope of protection of the utility model. Therefore, the scope of protection of the utility model shall be based on the scope of protection of the claims.

Claims

1. A centrifugal pump lubricating oil tank liquid level observation device, comprising a horizontal pipe (1) connected to the lubricating oil tank (18), one end of the horizontal pipe (1) away from the lubricating oil tank (18) is connected to a vertical pipe, the axis of the vertical pipe is arranged perpendicular to the liquid surface in the lubricating oil tank (18), and an observation ring (7) is arranged on the wall of the vertical pipe, characterized in that: A floating ball (4) is arranged in the vertical tube; a column (5) is fixedly arranged on the outer wall of the floating ball (4); a plurality of observation pieces (6) are arranged on the upper part of the column (5); and the plurality of observation pieces (6) have different colors.

2. The centrifugal pump lubricating oil tank liquid level observation device according to claim 1, characterized in that: The upper outer wall of the column (5) is provided with a disc in a threaded manner; the observation piece (6) is placed on the disc, and a through hole is provided in the middle of the observation piece (6); and the upper part of the column (5) is arranged in the through hole.

3. The centrifugal pump lubricating oil tank liquid level observation device according to claim 2, characterized in that: The vertical pipe comprises a connecting pipe (2); the side wall of the connecting pipe (2) is connected to the horizontal pipe; the upper open end of the connecting pipe (2) is threadedly provided with a top cover (13); a through hole is provided in the middle of the top cover (13); the upper end of the top cover (13) is clamped with an observation pipe (3); the observation ring (7) is provided on the observation pipe (3); the floating ball is provided in the connecting pipe (2); and the column (5) penetrates the top cover (13) and then extends into the observation pipe (3).

4. The centrifugal pump lubricating oil tank liquid level observation device according to claim 3, characterized in that: The inner diameter of the through hole of the top cover (13) is larger than the outer diameter of the column (5); and the outer diameter of the disc of the column (5) is smaller than the inner diameter of the observation tube (3).

5. The centrifugal pump lubricating oil tank liquid level observation device according to claim 3, characterized in that: A groove (14) is provided at the upper end of the top cover (13); a circular cleaning sheet (15) is placed in the groove (14); a gap is provided between the inner wall of the cleaning sheet (15) and the outer wall of the column (5); and an interference fit is formed between the outer wall of the cleaning sheet (15) and the inner wall of the groove (14).

6. The centrifugal pump lubricating oil tank liquid level observation device according to claim 4, characterized in that: An air pressure balance hole (16) is provided at the upper end of the observation tube (3).

7. The centrifugal pump lubricating oil tank liquid level observation device according to claim 6, characterized in that: A bubble level (17) is provided on the outer wall of the observation tube (3); the axis of the bubble level (17) is perpendicular to the axis of the observation tube (3).

8. The centrifugal pump lubricating oil tank liquid level observation device according to claim 7, characterized in that: The horizontal pipe (1) comprises a connecting pipe (8) threadedly connected to a lubricating oil tank (18); one end of the connecting pipe (8) away from the lubricating oil tank (18) is threadedly connected to a locking ring (10); one end of the locking ring (10) away from the connecting pipe (8) is threadedly connected to an adjusting pipe (9); and one end of the adjusting pipe (9) away from the locking ring (10) is threadedly connected to a connecting pipe (2).

9. The centrifugal pump lubricating oil tank liquid level observation device according to claim 8, characterized in that: A sealing gasket (11) is provided between the connecting pipe (8) and the regulating pipe (9); and a sealing ring (12) is provided at the connection between the regulating pipe (9) and the connecting pipe (2).

10. The centrifugal pump lubricating oil tank liquid level observation device according to claim 9, characterized in that: A hexagonal platform is provided on the connecting pipe (8).

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