Vertical pump and lubricating oil leakage collecting and detecting device used for vertical pump

Abstract

The invention relates to the field of fluid conveying equipment, and discloses a vertical pump and a lubricating oil leakage collecting and detecting device.The vertical pump comprises a pump body (1), a gear box (2) installed on the upper side of the pump body and a transmission shaft (3) extending downwards into the pump body from the gear box. The transmission shaft is provided with a gear box side mechanical sealing structure (21) and a pump body side mechanical sealing structure (11), and the gear box (2) is provided with an oil leakage observation channel (22) communicated with the space between the gear box side mechanical sealing structure and the pump body side mechanical sealing structure. The lubricating oil leakage collecting and detecting device comprises a connecting pipe (4) and a collecting tank (5), wherein the connecting pipe (4) is connected to the outer end of the oil leakage observing channel, and the collecting tank (5) is communicated with the connecting pipe and used for receiving lubricating oil leaked by the gearbox side mechanical sealing structure. The lubricating oil leakage collection and detection device can effectively reduce the pollution of the working environment and reduce the related safety risk caused by the leakage of the lubricating oil to the external environment.

Description

Technical Field

[0001] The present invention relates to fluid conveying equipment, and particularly to a lubricating oil leakage collection and detection device for a vertical pump. On this basis, the present invention further relates to a vertical pump provided with the lubricating oil leakage collection and detection device. Background Art

[0002] In order to ensure the reliable operation of mechanical equipment, it is usually necessary to use lubricating oil to lubricate and cool components with relative contact and movement to reduce component damage such as wear. Figure 1 A vertical high-speed pump in the prior art is shown, which has a pump body 1, a gearbox 2 installed on the upper side of the pump body 1, and a transmission shaft 3 extending downward from the gearbox 2 into the pump body 1. At the positions where the transmission shaft 3 passes through and penetrates the gearbox 2 and the pump body 1, a mechanical seal structure 21 on the gearbox side and a mechanical seal structure 11 on the pump body side are respectively provided to maintain the respective seals of the gearbox 2 and the pump body 1.

[0003] The gearbox 2 is also provided with an outwardly open channel, that is, an oil leakage observation channel 22, which communicates with the space below the mechanical seal structure 21 on the gearbox side to be able to discharge the lubricating oil leaked from the gearbox 2. When the vertical high-speed pump is operating normally, there is almost no or only a small amount of lubricating oil leakage at the mechanical seal structure 21 on the gearbox side, and the user can observe these trace leakages through the oil leakage observation channel 22. When a failure occurs in the mechanical seal structure 21 on the gearbox side, the amount of lubricating oil leakage increases, and more lubricating oil will leak to the external environment through this oil leakage observation channel 22, thereby determining the seal failure.

[0004] Therefore, whether in the normal operating condition or when a seal failure occurs, the leaked lubricating oil will drip onto the pump body bottom plate through the oil leakage observation channel 22 and accumulate at the dripping position, polluting the working environment and easily causing safety risks such as staff slipping or inducing fire accidents. Summary of the Invention

[0005] The object of the present invention is to overcome the problems in the prior art that the lubricating oil dripping from the vertical pump easily causes environmental pollution of the working environment and safety risks such as staff slipping or inducing fire accidents, and to provide a lubricating oil leakage collection and detection device for a vertical pump, which can effectively reduce environmental pollution of the working environment and reduce the relevant safety risks caused by the leakage of lubricating oil to the external environment.

[0006] To achieve the above object, on the one hand, the present invention provides a lubricating oil leakage collection and detection device for a vertical pump. The vertical pump includes a pump body, a gearbox installed on the upper side of the pump body, and a transmission shaft extending downward from the gearbox into the pump body. A mechanical seal structure on the gearbox side and a mechanical seal structure on the pump body side are provided on the transmission shaft. An oil leakage observation channel communicating with the space between the mechanical seal structure on the gearbox side and the mechanical seal structure on the pump body side is provided on the gearbox. The lubricating oil leakage collection and detection device includes a connecting pipe connected to the outer end of the oil leakage observation channel and a collection tank communicating with the connecting pipe for receiving the lubricating oil leaked from the mechanical seal structure on the gearbox side.

[0007] Preferably, the pump body is installed on a pump body bottom plate, and the collection tank is installed above the pump body bottom plate and spaced apart from the pump body bottom plate.

[0008] Preferably, the collection tank is connected to the connecting pipe through a tee joint, and an exhaust pipe for discharging the air in the collection tank is also connected to the tee joint. The exhaust pipe is connected above the collection tank.

[0009] Preferably, the top end of the exhaust pipe is bent and extended relative to the vertical direction, and the air outlet is arranged downward.

[0010] Preferably, the collection tank is detachably connected to the connecting pipe.

[0011] Preferably, the collection tank is made of a transparent material so as to be able to observe the liquid level in the collection tank.

[0012] Preferably, the collection tank is made of glass or polymer material.

[0013] Preferably, a liquid level sensor for detecting the liquid level in the tank and / or a pressure sensor for detecting the pressure in the tank are provided on the collection tank.

[0014] Preferably, the liquid level sensor and / or the pressure sensor are signal-connected to a remote control unit, and the remote control unit is configured to be able to receive the detected liquid level signal and / or pressure signal.

[0015] On the second aspect of the present invention, a vertical pump is provided, and the above lubricating oil leakage collection and detection device is provided on the vertical pump.

[0016] Through the above technical solution, the operator can conveniently judge the operating state of the mechanical seal structure on the gearbox side according to signals such as the liquid level change in the collection tank. When the liquid level has no obvious change, it indicates that the mechanical seal structure on the gearbox side is operating well; when the liquid level changes significantly or suddenly increases, it indicates that the mechanical seal structure on the gearbox side fails and requires shutdown for maintenance. Since the leaked lubricating oil is collected in the collection tank, it can effectively reduce the pollution of the lubricating oil to the working environment (atmosphere, water, ground or pump body bottom plate), and is convenient for keeping the working environment clean and tidy. At the same time, since the accumulation of the dripping lubricating oil on the pump body bottom plate is avoided, the safety risks such as the staff slipping or inducing a fire accident can be reduced. Brief Description of the Drawings

[0017] Figure 1 is a cross-sectional view of a vertical pump in the prior art;

[0018] Figure 2 is a cross-sectional view of a vertical pump according to a preferred embodiment of the present invention.

[0019] Description of the Reference Numerals

[0020] 1 - pump body; 11 - mechanical seal structure on the pump body side; 2 - gearbox; 21 - mechanical seal structure on the gearbox side; 22 - oil leakage observation channel; 3 - transmission shaft; 4 - connecting pipe; 5 - collection tank; 6 - exhaust pipe. Detailed Embodiment

[0021] The following will describe in detail the specific embodiments of the present invention with reference to the drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] In the present invention, unless otherwise stated, the orientation terms such as "upper, lower, left, right" usually refer to the upper, lower, left, and right shown in the reference drawings; "inner, outer" refer to the inner and outer of the contour of each component itself.

[0023] Refer to Figure 2As shown in the figure, the present invention provides a vertical pump and a lubricating oil leakage collection and detection device for the same. The vertical pump includes a pump body 1, a gearbox 2 installed on the upper side of the pump body 1, and a transmission shaft 3 extending downward from the gearbox 2 into the pump body 1. Among them, the gearbox 2 can be drivingly connected to a prime mover such as an electric motor, and a plurality of meshing transmission gears can be installed therein to be driven by the prime mover to rotate the transmission shaft 3, thereby driving the rotor in the pump body 1 to rotate and realizing the functions of fluid transportation or pressurization. In order to reduce the wear of transmission gears and the like, lubricating oil is added to the gearbox 2. At the positions where the transmission shaft 3 penetrates out of and into the gearbox 2 and the pump body 1, a mechanical seal structure 21 on the gearbox side and a mechanical seal structure 11 on the pump body side are further provided on the transmission shaft 3 to maintain the seals of the gearbox 2 and the pump body 1 at these positions respectively. After long-term use, the mechanical seal structure 21 on the gearbox side may malfunction, resulting in the leakage of lubricating oil. Therefore, it is necessary to timely know the failure state of the mechanical seal structure 21 on the gearbox side and perform shutdown maintenance.

[0024] For this reason, an oil leakage observation channel 22 is provided on the gearbox 2 to connect the space between the mechanical seal structure 21 on the gearbox side and the mechanical seal structure 11 on the pump body side. When the mechanical seal structure 21 on the gearbox side malfunctions, a large amount of lubricating oil flows out through the oil leakage observation channel 22. In order to avoid the dripping of this lubricating oil causing environmental pollution of the working environment or other related safety risks, the present invention provides a lubricating oil leakage collection and detection device for collecting this lubricating oil. Specifically, the lubricating oil leakage collection and detection device includes a connecting pipe 4 connected to the outer end of the oil leakage observation channel 22 and a collection tank 5 communicating with the connecting pipe 4, so that the collection tank 5 can receive the lubricating oil from the gearbox 2 leaked by the mechanical seal structure 21 on the gearbox side.

[0025] Thus, the implementation of the lubricating oil leakage collection and detection device of the present invention does not require changing the main structure of the existing vertical pump as Figure 1 shown. Only by connecting the connecting pipe 4 of the lubricating oil leakage collection and detection device to the oil leakage observation channel 22 can the lubricating oil be collected. The operator can conveniently judge the operating state of the mechanical seal structure 21 on the gearbox side according to signals such as the liquid level change in the collection tank 5: when the liquid level does not change significantly, it indicates that the mechanical seal structure 21 on the gearbox side is operating well; when the liquid level changes significantly or suddenly increases, it indicates that the mechanical seal structure 21 on the gearbox side fails and shutdown maintenance is required.

[0026] In this process, since the leaked lubricating oil is collected in the collection tank 5, it is possible to effectively reduce the pollution of the lubricating oil to the working environment (atmosphere, water, ground or the pump body bottom plate), and it is convenient to keep the working environment clean and tidy. At the same time, since the accumulation of dripping lubricating oil on the pump body bottom plate is avoided, the safety risks such as staff slipping or inducing fire accidents can be reduced.

[0027] Generally, the pump body 1 can be installed on the pump body bottom plate. During the working process, the vertical pump may have slight vibrations, which may cause the lubricating oil leakage collection and detection device to vibrate accordingly. Therefore, the collection tank 5 should not be in contact with the pump body bottom plate or the ground. In a preferred embodiment of the present invention, the collection tank 5 is installed above the pump body bottom plate and is spaced apart from the pump body bottom plate. That is, by suspending the collection tank 5 to the connecting pipe 4, the bottom surface of the collection tank 5 is higher than the bottom surface height of the pump body 1, so that the collection tank 5 can vibrate with the pump body without colliding with the pump body bottom plate, thereby avoiding collision damage.

[0028] The collection tank 5 can be connected to the connecting pipe 4 in a variety of suitable ways as long as it can receive the lubricating oil discharged from the oil leakage observation channel 22. In the illustrated preferred embodiment, a tee joint is connected to the outer end of the connecting pipe 4, and the collection tank 5 is connected to the connecting pipe 4 through the tee joint. The tee joint is also connected to an exhaust pipe 6 for discharging the air in the collection tank 5, and the exhaust pipe 6 is located directly above the collection tank 5. Thus, as the lubricating oil enters the collection tank 5, the air in the collection tank 5 is discharged through the exhaust pipe 6. Since the exhaust pipe 6 extends upward from the tee joint, it can also effectively prevent the lubricating oil from overflowing from the exhaust pipe 6, which is beneficial to ensuring a clean and tidy working environment. Among them, the top end of the exhaust pipe 6 can be set to bend and extend relative to the vertical direction, and the air outlet faces downward, so that even if some lubricating oil is discharged from the exhaust pipe 6, it can be avoided that the lubricating oil is sprayed to other positions around the pump body, which is convenient for cleaning.

[0029] In the lubricating oil leakage collection and detection device of the present invention, the collection tank 5 can be set to be detachably connected to the connecting pipe 4. When the liquid level height in the collection tank 5 is relatively high, the collection tank 5 can be removed from the connecting pipe 4 to timely pour out the lubricating oil collected therein. Typically, the collection tank 5 can be connected to the corresponding pipeline by thread or by flange.

[0030] In order to facilitate observing the liquid level in the collection tank 5, the collection tank 5 can be made of a transparent material, such as glass (such as tempered glass), polymer and other materials. The collection tank 5 can have a suitable volume, such as determining its volume according to the possible amount of leaked lubricating oil and its installation space. The shape of the collection tank 5 can be cylindrical, square, conical, etc.

[0031] In a preferred embodiment of the present invention, the collection tank 5 may further be provided with detection instruments, such as a liquid level sensor, a pressure sensor, etc., so as to detect the liquid level and pressure in the tank, etc. By setting such detection instruments, users can understand whether the mechanical seal structure 21 on the gearbox side fails without on-site inspection (observing the collection tank). For example, according to the working environment, etc., the signals of the above-mentioned detection instruments such as the liquid level sensor and the pressure sensor can be connected to the remote control unit, thereby enabling remote monitoring and reducing the workload caused by on-site operation and inspection.

[0032] The present invention also provides a vertical pump provided with the above-mentioned lubricating oil leakage collection and detection device. When the vertical pump is running normally, a small amount of leaked lubricating oil all flows into the collection tank for collection; when the mechanical seal structure on the gearbox side fails, at least most of the leaked lubricating oil can be collected. The leaked lubricating oil enters the collection tank, and there is no lubricating oil accumulation around the pump body including the pump body bottom plate, thereby keeping the working environment clean and tidy and reducing the relevant safety risks caused by the leakage of lubricating oil to the external environment.

[0033] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including any suitable combination of each specific technical feature. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods. But these simple modifications and combinations should also be regarded as the content disclosed by the present invention and all fall within the protection scope of the present invention.

Claims

1. A lubricating oil leakage collection and detection device for a vertical pump, the vertical pump comprising a pump body (1), a gearbox (2) installed on the upper side of the pump body (1), and a transmission shaft (3) extending downward from the gearbox (2) into the pump body (1). A mechanical seal structure (21) on the gearbox side and a mechanical seal structure (11) on the pump body side are provided on the transmission shaft (3). It is characterized in that, An oil leakage observation channel (22) communicating with the space between the mechanical seal structure (21) on the gearbox side and the mechanical seal structure (11) on the pump body side is provided on the gearbox (2). The lubricating oil leakage collection and detection device includes a connecting pipe (4) connected to the outer end of the oil leakage observation channel (22) and a collection tank (5) communicating with the connecting pipe (4) for receiving the lubricating oil leaked from the mechanical seal structure (21) on the gearbox side.

2. The lubricating oil leakage collection and detection device for a vertical pump according to claim 1, characterized in that, The pump body (1) is installed on the pump body bottom plate, and the collection tank (5) is installed above the pump body bottom plate and spaced apart from the pump body bottom plate.

3. The lubricating oil leakage collection and detection device for a vertical pump according to claim 1, characterized in that, The collection tank (5) is connected to the connecting pipe (4) through a three-way joint, and an exhaust pipe (6) for discharging the air in the collection tank (5) is also connected to the three-way joint. The exhaust pipe (6) is connected above the collection tank (5).

4. The lubricating oil leakage collection and detection device for a vertical pump according to claim 3, characterized in that, The top end of the exhaust pipe (6) is bent and extended relative to the vertical direction, and the air outlet is arranged downward.

5. The lubricating oil leakage collection and detection device for a vertical pump according to claim 1, characterized in that, The collection tank (5) is detachably connected to the connecting pipe (4).

6. The lubricating oil leakage collection and detection device for a vertical pump according to claim 1, characterized in that The collection tank (5) is made of a transparent material so as to be able to observe the liquid level in the collection tank (5).

7. The lubricating oil leakage collection and detection device for a vertical pump according to claim 6, characterized in that, The collection tank (5) is made of glass or polymer material.

8. The lubricating oil leakage collection and detection device for a vertical pump according to claim 1, characterized in that, A liquid level sensor for detecting the liquid level in the tank and / or a pressure sensor for detecting the pressure in the tank are provided on the collection tank (5).

9. The lubricating oil leakage collection and detection device for a vertical pump according to claim 8, characterized in that, The liquid level sensor and / or the pressure sensor are signal-connected to a remote control unit, and the remote control unit is configured to be able to receive the detected liquid level signal and / or pressure signal.

10. A vertical pump, characterized in that, This vertical pump is provided with the lubricating oil leakage collection and detection device according to any one of claims 1 to 9.

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