Oil sampling device for water guide oil groove of water turbine

Abstract

The utility model belongs to the technical field of water turbine water guide oil grooves, and particularly relates to a water turbine water guide oil groove oil sampling device. According to the technical scheme, the water turbine water guide oil groove oil sampling device comprises a flange installed on an oil groove cover plate, a piston pipe is fixed to the lower side of the flange, the lower end of the piston pipe is connected with an oil inlet structure, the lower end of the oil inlet structure is connected with an oil suction pipe, and the oil suction pipe extends into an oil groove; a piston is arranged in the piston pipe and connected with an operating rod, the other end of the operating rod extends out of a flange, an oil outlet pipe penetrates through the flange, the lower end of the oil outlet pipe is connected with an oil outlet structure, the lower end of the oil outlet structure is connected with a pipeline, and the pipeline is communicated with the lower portion of the piston pipe. A small hole is formed in the upper portion of the piston pipe. The utility model provides an oil sampling device for a water guide oil groove of a water turbine.

Description

Technical Field

[0001] The utility model belongs to the technical field of water turbine oil guide grooves, in particular to an oil sampling device for a water turbine oil guide groove. Background Art

[0002] There are currently two main ways to take oil samples from the water-oil guide tank of a turbine: one is to take oil from the oil sampling valve provided in the water-oil guide tank. The oil sampling valve designed for the water-oil guide tank is located on the oil basin at the bottom of the tank; the other is to take oil samples by opening the plexiglass observation window arranged on the cover of the water-oil guide tank.

[0003] However, the prior art has the following disadvantages:

[0004] First, because the main shaft seal is located below the oil pan, the water flow from the main shaft seal accumulates in the top cover. When taking oil through the oil sampling valve on the oil pan at the bottom of the water guide tank, the staff needs to wear rain pants and go down to the vicinity of the oil sampling valve below the oil pan. During the oil sampling process, due to the rotation of the unit, the water splashed outward from the main shaft seal can easily splash into the oil sample bottle, and the oil sample collected can be mixed with impurities, seriously affecting the test results. The risk of staff going up and down the top cover is relatively high. Not only are they prone to slipping and falling, they may also touch the rotating parts of the unit, which may cause more serious consequences. Frequent opening and closing of the oil sampling valve can easily cause it to be loosely closed or even fail, which may cause the oil in the oil pan to leak out, seriously threatening the safe and stable operation of the unit.

[0005] Second, when taking oil samples through the plexiglass observation window on the water-guide oil tank cover, there's a risk of foreign objects falling into the tank. This is often done by placing the sample bottle directly into the tank to scoop out the oil, which can easily contaminate the oil in the tank. When the observation window is opened during startup, a large amount of oil splashes out, making sampling difficult and causing environmental pollution. Utility Model Content

[0006] In order to solve the above problems existing in the prior art, the purpose of the utility model is to provide an oil sampling device for a water turbine oil guide groove.

[0007] The technical solution adopted by this utility model is:

[0008] A device for taking an oil sample from a water-guide oil tank of a water turbine comprises a flange mounted on an oil tank cover plate, a piston tube being fixed to the lower side of the flange, the lower end of the piston tube being connected to an oil inlet structure, the lower end of the oil inlet structure being connected to an oil suction pipe, the oil suction pipe extending into the oil tank; a piston being arranged in the piston tube, the piston being connected to an operating rod, the other end of the operating rod extending out of the flange, an oil outlet pipe being passed through the flange, the lower end of the oil outlet pipe being connected to the oil outlet structure, the lower end of the oil outlet structure being connected to a pipeline, the pipeline being connected to the lower part of the piston tube; a small hole being opened in the upper part of the piston tube.

[0009] This utility model is designed based on the principle of atmospheric pressure. During operation, the operator uses the operating handle to make the piston reciprocate up and down. In this way, the oil sample can be obtained by simply placing the oil sample bottle under the outlet of the oil outlet pipe. As the piston reciprocates up and down, the oil flows out through the oil outlet pipe, and the oil sample can be obtained smoothly.

[0010] This utility model is installed on the cover of the water-guide oil tank, featuring a simple structure and easy implementation. It is simple for operators to operate, saving time and effort, and is highly efficient. Oil sampling can be completed by a single operator. Oil sampling is not affected by machine startup or shutdown, and can be performed even when the machine is running. Operators do not need to descend into the top cover, significantly improving their safety. The oil sample collected by this device is unaffected by the external environment and accurately reflects the oil quality within the tank.

[0011] As a preferred embodiment of the present invention, the oil outlet structure includes an oil outlet sealing conical cavity, which is located between the oil outlet pipe and the pipeline, and an oil outlet metal ball is provided in the oil outlet sealing conical cavity. The oil inlet sealing conical cavity is a structure that is larger at the top and smaller at the bottom. When the piston moves upward, the gas on the upper part of the piston is discharged from the small hole, and a negative pressure is generated in the space below the piston. The oil inlet metal ball moves upward, the oil inlet opens, and the oil enters the space below the piston. When the piston stops at the top dead center, the oil inlet metal ball falls downward to the initial position of the oil inlet sealing conical cavity because its density is greater than that of the turbine oil. During the downward movement of the piston, the oil inlet is sealed by the imported metal ball.

[0012] As a preferred embodiment of the present invention, the oil inlet structure includes a conical oil inlet sealing cavity located between the piston tube and the oil suction pipe. A metal oil inlet ball is positioned within the conical oil inlet sealing cavity. The sealing cavity is larger at the top and smaller at the bottom. During the upward movement of the piston, the oil outlet ball is positioned within the conical oil outlet sealing cavity, sealing the oil outlet and allowing oil to enter the space below the piston. During the downward movement of the piston, the oil outlet ball moves upward, opening the oil outlet, and oil enters the oil outlet pipe above the ball.

[0013] As a preferred solution of the present invention, one end of the operating rod extending out of the flange is connected to a handle.

[0014] As a preferred embodiment of the present invention, one end of the oil outlet pipe extending from the flange is connected to a dust cover. The dust cover is provided at the outlet of the oil outlet pipe of the device, which is opened before taking the oil sample and replaced after taking the sample, thereby effectively preventing the external environment from contaminating the oil.

[0015] As a preferred embodiment of the present invention, a piston seal is provided on the outer wall of the piston. The piston seal can be an O-ring. The piston seal ensures a good seal between the piston and the piston tube.

[0016] As a preferred embodiment of the present invention, a flange seal is provided on the side of the flange facing the oil tank cover. The flange seal may be an O-ring. After the flange is connected to the oil tank cover, the flange seal is compressed between the flange and the oil tank cover to ensure a good seal between the two.

[0017] As a preferred solution of the present invention, a plurality of bolt holes are provided on the flange, and the bolt holes on the flange are connected to the oil tank cover plate by bolts.

[0018] As a preferred solution of the present invention, an operating rod seal is provided between the operating rod and the flange. An O-ring is provided between the operating rod and the flange as the operating rod seal, which can also effectively prevent the external environment from contaminating the oil.

[0019] As a preferred solution of the present invention, the small hole and the pipeline are respectively arranged on both sides of the piston.

[0020] The beneficial effects of the utility model are:

[0021] This utility model is installed on the cover of the water-guide oil tank, featuring a simple structure and easy implementation. It is simple for operators to operate, saving time and effort, and is highly efficient. Oil sampling can be completed by a single operator. Oil sampling is not affected by machine startup or shutdown, and can be performed even when the machine is running. Operators do not need to descend into the top cover, significantly improving their safety. The oil sample collected by this device is unaffected by the external environment and accurately reflects the oil quality within the tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the structure of the utility model;

[0024] Figure 3 yes Figure 2 Schematic diagram of the structure at AA in the middle;

[0025] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle.

[0026] In the figure: 1-handle; 2-oil outlet pipe; 3-dust cover; 4-flange; 5-oil outlet metal ball; 6-oil outlet sealing conical cavity; 7-pipeline; 8-oil inlet sealing conical cavity; 9-oil suction pipe; 10-oil inlet metal ball; 11-piston tube; 12-piston; 13-piston seal; 14-flange seal; 15-bolt hole; 16-operating rod seal; 17-operating rod; 18-small hole. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without inventive effort are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features therein may be combined with each other unless there is a conflict.

[0029] like Figures 1 to 4 As shown, the oil sampling device for the water guide tank of the turbine in this embodiment includes a flange 4 installed on the oil tank cover plate, a piston tube 11 is fixed to the lower side of the flange 4, the lower end of the piston tube 11 is connected to the oil inlet structure, the lower end of the oil inlet structure is connected to the oil suction pipe 9, and the oil suction pipe 9 extends into the oil tank; a piston 12 is provided in the piston tube 11, and an operating rod 17 is connected to the piston 12, and the other end of the operating rod 17 extends out of the flange 4, an oil outlet pipe 2 is passed through the flange 4, the lower end of the oil outlet pipe 2 is connected to the oil outlet structure, the lower end of the oil outlet structure is connected to the pipeline 7, and the pipeline 7 is connected to the lower part of the piston tube 11; a small hole 18 is opened in the upper part of the piston tube 11, and the small hole 18 and the pipeline 7 are respectively arranged on both sides of the piston 12.

[0030] The oil sampling device is mounted on the oil tank cover via flange 4 and connected to the cover via bolts 15. The length of the oil inlet is determined by the oil level in the tank; it is preferably inserted 500 mm below the oil level to facilitate sampling in the middle of the tank.

[0031] The utility model is designed mainly based on the principle of atmospheric pressure. During operation, the operator operates the handle 1 to make the piston 12 reciprocate up and down. In this way, the oil sample can be obtained by simply placing the oil sample bottle under the outlet of the oil outlet pipe 2. The piston 12 reciprocates up and down, and the oil flows out through the oil outlet pipe 2, so that the oil sample can be obtained smoothly.

[0032] Wherein, the oil outlet structure includes an oil outlet sealing conical cavity 6, which is located between the oil outlet pipe 2 and the pipeline 7, and an oil outlet metal ball 5 is arranged in the oil outlet sealing conical cavity 6. The oil inlet sealing conical cavity 8 is a structure with a larger upper portion and a smaller lower portion. When the piston 12 moves upward, the gas above the piston 12 is discharged from the small hole 18, and a negative pressure is generated in the space below the piston 12. The oil inlet metal ball 10 moves upward, the oil inlet opens, and the oil enters the space below the piston 12. When the piston 12 stops at the top dead center, the oil inlet metal ball 10 falls downward to the initial position of the oil inlet sealing conical cavity 8 because its density is greater than that of the turbine oil. During the downward movement of the piston 12, the oil inlet is sealed by the inlet metal ball.

[0033] The oil inlet structure includes a conical oil inlet sealing cavity 8, located between the piston tube 11 and the oil suction pipe 9. A metal oil inlet ball 10 is located within the conical oil inlet sealing cavity 8. This sealing cavity is larger at the top and smaller at the bottom. When the piston 12 moves upward, the oil outlet metal ball 5 is located within the conical oil outlet sealing cavity 6, sealing the oil outlet and allowing oil to enter the space below the piston 12. As the piston 12 moves downward, the oil outlet metal ball 5 moves upward, opening the oil outlet, and allowing oil to reach the oil outlet pipe 2 above the oil outlet metal ball 5.

[0034] For easy operation, one end of the operating rod 17 extending out of the flange 4 is connected to the handle 1 .

[0035] One end of the oil outlet pipe 2 extending from the flange 4 is connected to a dust cover 3. The nozzle of the oil outlet pipe 2 of the device is provided with a dust cover 3, which is opened before taking the oil sample and replaced after taking the oil sample, thereby effectively preventing the external environment from contaminating the oil.

[0036] In order to ensure good sealing, a piston seal 13 is provided on the outer wall of the piston 12. The piston seal 13 can be an O-ring. The piston seal 13 ensures good sealing between the piston 12 and the piston tube 11.

[0037] The flange 4 is provided with a flange seal 14 on the side facing the oil tank cover. The flange seal 14 can be an O-ring. After the flange 4 is connected to the oil tank cover, the flange seal 14 is pressed tightly between the flange 4 and the oil tank cover to ensure a good seal between the two.

[0038] The flange 4 is provided with a plurality of bolt holes 15 , and the bolt holes 15 on the flange 4 are connected to the oil tank cover plate by bolts.

[0039] An operating rod seal 16 is provided between the operating rod 17 and the flange 4. An O-ring is provided between the operating rod 17 and the flange 4 as the operating rod seal 16, which can also effectively prevent the external environment from contaminating the oil.

[0040] Working principle:

[0041] This device is designed primarily based on the principle of atmospheric pressure. During operation, the operator uses the operating handle 1 to make the piston 12 reciprocate up and down. In this way, the oil sample can be obtained by simply placing the oil sample bottle under the outlet of the oil outlet pipe 2. A piston seal 13 is installed on the outside of the piston 12, and the seal is made of an O-ring. When the piston 12 moves upward, the gas above the piston 12 is discharged from the oil outlet pipe 2, and a negative pressure is generated in the space below the piston 12. The oil inlet metal ball 10 moves upward, and the oil inlet opens. The oil outlet metal ball 5 is in the oil outlet sealing conical cavity 6, sealing the oil outlet, and the oil enters the space below the piston 12. When the piston 12 stops at the top dead center, the oil inlet metal ball 10 falls down to the initial position of the oil inlet sealing conical cavity 8 because its density is greater than that of the turbine oil. During the downward movement of piston 12, the oil inlet is sealed by the inlet metal ball, and the oil outlet metal ball 5 moves upward, opening the oil outlet, allowing the oil to reach the upper piston tube 11 of piston 12. During the next upward movement of piston 12, the oil outlet metal ball 5 is located in the oil outlet sealing conical cavity 6, sealing the oil outlet. The oil above piston 12 flows into the oil sampling bottle through the oil outlet pipe 2. After this reciprocating operation, the oil will flow out through the oil outlet pipe 2, and the oil sample can be successfully collected.

[0042] The outlet pipe 2 of the device is equipped with a dust cap 3, which is opened before oil sampling and replaced afterward, effectively preventing external environmental contamination of the oil. An O-ring seal 16 is provided between the operating rod 17 and the flange 4, creating a closed space above the piston 12 to facilitate the pressure of oil to the outlet pipe 2 and similarly prevent external environmental contamination.

[0043] The utility model is installed on the water oil guide groove cover plate, has a simple structure and is easy to implement.

[0044] The operation is simple for the staff, saving time and effort, and high efficiency. One staff member can complete the oil sampling work.

[0045] The oil sampling work is not affected by the start-up and shutdown of the machine, and the oil sampling work can be carried out while the machine is running.

[0046] Workers do not need to go down into the roof, which greatly improves their safety.

[0047] The oil sample taken by the device is not affected by the external environment and can truly reflect the oil quality condition of the oil in the oil tank.

[0048] The device can also be installed on the upper oil guide groove for use.

[0049] The present invention is not limited to the above-mentioned optional implementation methods. Anyone can derive various other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that falls within the scope defined by the claims of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A device for sampling oil from a water-turbine oil guide groove, characterized in that: The invention comprises a flange (4) mounted on an oil tank cover plate, a piston tube (11) being fixed on the lower side of the flange (4), the lower end of the piston tube (11) being connected to an oil inlet structure, the lower end of the oil inlet structure being connected to an oil suction pipe (9), and the oil suction pipe (9) extending into the oil tank; a piston (12) being arranged in the piston tube (11), an operating rod (17) being connected to the piston (12), the other end of the operating rod (17) extending out of the flange (4), an oil outlet pipe (2) being passed through the flange (4), the lower end of the oil outlet pipe (2) being connected to the oil outlet structure, the lower end of the oil outlet structure being connected to a pipeline (7), the pipeline (7) being communicated with the lower part of the piston tube (11); a small hole (18) being opened at the upper part of the piston tube (11).

2. The device for sampling oil from a water-turbine oil guide groove according to claim 1, characterized in that: The oil outlet structure comprises an oil outlet sealing conical cavity (6), the oil outlet sealing conical cavity (6) is located between the oil outlet pipe (2) and the pipeline (7), and an oil outlet metal ball (5) is arranged in the oil outlet sealing conical cavity (6).

3. The oil sampling device for the water guide groove of a hydraulic turbine according to claim 1, characterized in that: The oil inlet structure comprises an oil inlet sealing conical cavity (8), the oil inlet sealing conical cavity (8) is located between the piston tube (11) and the oil suction pipe (9), and an oil inlet metal ball (10) is arranged in the oil inlet sealing conical cavity (8).

4. The device for sampling oil from a water-turbine oil guide groove according to claim 1, characterized in that: One end of the operating rod (17) extending out of the flange (4) is connected to a handle (1).

5. The device for sampling oil from a water-turbine oil guide groove according to claim 1, characterized in that: One end of the oil outlet pipe (2) extending out of the flange (4) is connected to a dust cover (3).

6. The device for sampling oil from a water-turbine oil guide groove according to claim 1, characterized in that: A piston seal (13) is provided on the outer wall of the piston (12).

7. The device for sampling oil from a water-turbine oil guide groove according to claim 1, characterized in that: A flange seal (14) is provided on the side of the flange (4) facing the oil tank cover.

8. The device for sampling oil from a water-turbine oil guide groove according to claim 1, characterized in that: The flange (4) is provided with a plurality of bolt holes (15), and the bolt holes (15) on the flange (4) are connected to the oil tank cover plate through bolts.

9. The device for sampling oil from a water-turbine oil guide groove according to claim 1, characterized in that: An operating rod seal (16) is provided between the operating rod (17) and the flange (4).

10. The oil sampling device for the water guide groove of a hydraulic turbine according to any one of claims 1 to 9, characterized in that: The small hole (18) and the pipeline (7) are respectively arranged on both sides of the piston (12).

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