Pump filling operation monitoring device for centrifugal pump

Abstract

The pump filling operation monitoring device for the centrifugal pump comprises a conveying pipeline and an overflow warning mechanism, the two ends of the conveying pipeline are connected with a connector and a branch pipe respectively, the end, away from the conveying pipeline, of the branch pipe is connected with a flow monitoring mechanism, and meanwhile the other end of the flow monitoring mechanism is connected with a pump filling pipeline. The overflow warning mechanism is connected with the top of the pump filling pipeline through an overflow pipeline. According to the pump filling operation monitoring device for the centrifugal pump, the flow monitoring assembly can monitor oil flowing into the detection tank, the detection result is displayed on the display panel, a worker can check the pump filling amount through the display panel, and meanwhile when the pump filling amount is saturated, the oil flows into the overflow tank through the overflow pipeline; when the piston head moves to be in contact with the extrusion switch, the extrusion switch controls the buzzer to give an alarm, and pollution and waste caused by the fact that the pipeline joint cracks due to the fact that the pump filling amount is saturated and internal pressure is too high are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas gathering and transportation, in particular to a pump filling operation monitoring device for a centrifugal pump. Background Art

[0002] As the core equipment of crude oil gathering and transportation stations, centrifugal oil pumps rely on motors to drive the impeller inside the pump to rotate at high speed. The impeller then drives the fluid in the pump to generate centrifugal force. The pressure of the fluid increases after flowing through the volute inside the pump, thereby converting the mechanical energy of the motor into fluid potential energy. It is worth noting that, since the gas weight is less than the liquid weight, the impeller cannot throw out the gas during rotation, and a vacuum is formed in the center of the impeller, that is, the liquid cannot be sucked into the pump, which easily forms a vacuum phenomenon and damages the pump unit. Therefore, the centrifugal oil pump needs to be primed before starting. After searching, it is found that the typical priming operation monitoring device in the prior art is a priming operation monitoring device for a centrifugal pump with publication number CN220726609U, which belongs to the technical field of oil and gas gathering and transportation, including an exhaust pipe and a differential pressure transmitter, the exhaust pipe is connected to an inlet pipe, the differential pressure transmitter is connected to the exhaust pipe through the inlet pipe, a float is provided in the exhaust pipe, the density of the float is less than the density of crude oil, the upper end and the lower end of the exhaust pipe are both funnel-shaped, and the diameters of the upper port and the lower port of the exhaust pipe are both smaller than the diameter of the float; a first gate valve for controlling the on-off of the inlet pipe is provided on the inlet pipe, the first gate valve is located at a position where the differential pressure transmitter is far away from the exhaust pipe, and a second gate valve for controlling the on-off of the lower end of the exhaust pipe is provided at the lower end of the exhaust pipe. Its main features are accurate judgment, intuitive display and remote monitoring. It is suitable for centrifugal pump priming operations in crude oil gathering and transportation stations, and can achieve the purpose of accurate, time-saving and intuitive monitoring of pump priming operations.

[0003] In summary, the existing pump filling operation monitoring device has a single monitoring method, which is easy to cause the monitoring component to fail due to oil scale blocking the pipeline or other reasons, resulting in inaccurate monitoring results. In view of the above problems, the existing equipment needs to be improved. Utility Model Content

[0004] The utility model aims to provide a pump filling operation monitoring device for a centrifugal pump, so as to solve the problem that the existing pump filling operation monitoring device proposed in the above background technology has a single monitoring mode, which is easy to monitor the original failure due to oil scale blocking the pipeline or other reasons, resulting in inaccurate monitoring results.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pump filling operation monitoring device for a centrifugal pump, comprising a delivery pipeline and an overflow alarm mechanism,

[0006] The two ends of the delivery pipeline are respectively connected to the joint and the branch pipe, and the end of the branch pipe away from the delivery pipeline is connected to the flow monitoring mechanism, and the other end of the flow monitoring mechanism is connected to the filling pump pipeline. The overflow warning mechanism is connected to the top of the filling pump pipeline through the overflow pipeline. The overflow warning mechanism includes an overflow tank, a squeeze switch and a piston head, and the piston head is arranged in the overflow tank. At the same time, the overflow tank is connected to the delivery pipeline through a recovery pipeline.

[0007] Preferably, the delivery pipeline is S-shaped, and the recessed portion of the delivery pipeline is connected to the recovery pipeline.

[0008] Preferably, the flow monitoring mechanism includes a liquid inlet pipe, a flow monitoring component, a detection tank, a liquid discharge pipe and a display panel, and the upper and lower ends of the detection tank are respectively connected to the liquid inlet pipe and the liquid discharge pipe, and the flow monitoring component is installed inside the detection tank.

[0009] Preferably, the bottom of the liquid inlet pipe is arranged above the flow monitoring component, and the flow monitoring component is electrically connected to the display panel, and the display panel is installed on the outer wall of the detection tank.

[0010] Preferably, a one-way valve is installed on the filling pump pipeline, and the one-way valve is arranged on the inner side of the overflow pipeline, and the overflow pipeline is inclined.

[0011] Preferably, a buzzer is installed on the outer wall of the overflow tank, and the buzzer is arranged outside the squeeze switch.

[0012] Preferably, the piston head is slidably connected to the inside of the overflow tank, and the bottom of the overflow tank is connected to the recovery pipe, and the piston head is connected to a side wall of the overflow tank away from the squeeze switch through a return spring.

[0013] Preferably, an electric valve is installed on the recovery pipeline, and the electric valve, buzzer and squeeze switch are electrically connected.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the pump filling operation monitoring device for a centrifugal pump can

[0015] (1) The utility model can effectively solve the problem of the existing pump filling operation monitoring device having a single monitoring method, which is easy to cause inaccurate monitoring results due to the failure of the monitoring component due to oil scale blocking the pipeline or other reasons, through the coordinated use of the overflow alarm mechanism and the flow monitoring mechanism. The flow monitoring component can monitor the oil flowing into the detection tank and display the detection results on the display panel. The staff can check the filling amount through the display panel. At the same time, when the filling amount is saturated, the oil flows into the overflow tank through the overflow pipe and pushes the piston head to move. When the piston head moves and contacts the squeeze switch, the squeeze switch controls the buzzer to warn, thereby avoiding the rupture of the pipeline joint due to excessive internal pressure at the saturation of the filling amount, causing pollution and waste;

[0016] (2) The utility model can effectively solve the problem that the existing pump filling operation monitoring device cannot independently handle the excess oil when the pump filling amount is saturated through the coordinated use of the electric valve and the recovery pipe. After the squeeze switch is pressurized, the buzzer starts to sound an alarm and the electric valve is opened simultaneously. The oil in the overflow tank will be discharged to the inside of the conveying pipeline through the recovery pipe under the action of gravity, avoiding the overflow tank from rupturing due to excessive internal pressure, thereby improving the stability and safety of the device structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a cross-sectional structural diagram of the overflow warning mechanism of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the flow monitoring mechanism of the utility model.

[0020] In the figure: 1. delivery pipeline; 2. joint; 3. branch pipe; 4. flow monitoring mechanism; 401. liquid inlet pipe; 402. flow monitoring component; 403. detection tank; 404. discharge pipe; 405. display panel; 5. pump filling pipeline; 6. one-way valve; 7. overflow pipeline; 8. overflow alarm mechanism; 801. overflow tank; 802. squeeze switch; 803. piston head; 9. recovery pipeline; 10. electric valve; 11. buzzer. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 The utility model provides a technical solution: a pump filling operation monitoring device for a centrifugal pump.

[0023] Embodiment 1

[0024] like Figure 1 and Figure 2 As shown, the two ends of the delivery pipeline 1 are respectively connected to the joint 2 and the branch pipe 3, and the end of the branch pipe 3 away from the delivery pipeline 1 is connected to the flow monitoring mechanism 4, while the other end of the flow monitoring mechanism 4 is connected to the filling pump pipeline 5, and the overflow alarm mechanism 8 is connected to the top of the filling pump pipeline 5 through the overflow pipeline 7.

[0025] In a further embodiment, the delivery pipeline 1 is S-shaped, and the recessed portion of the delivery pipeline 1 is connected to the recovery pipeline 9 .

[0026] In a further embodiment, a one-way valve 6 is installed on the filling pump pipe 5, and the one-way valve 6 is arranged on the inner side of the overflow pipe 7, and the overflow pipe 7 is inclined.

[0027] The overflow warning mechanism 8 includes an overflow tank 801 , a squeeze switch 802 and a piston head 803 , and the piston head 803 is arranged in the overflow tank 801 . Meanwhile, the overflow tank 801 is connected to the conveying pipeline 1 through the recovery pipeline 9 .

[0028] In a further embodiment, a buzzer 11 is installed on the outer wall of the overflow tank 801 , and the buzzer 11 is arranged outside the squeeze switch 802 .

[0029] In a further embodiment, the piston head 803 is slidably connected to the inside of the overflow tank 801, and the bottom of the overflow tank 801 is connected to the recovery pipe 9. At the same time, the piston head 803 is connected to a side wall of the overflow tank 801 away from the extrusion switch 802 through a reset spring. The reset spring drives the piston head 803 to reset after the oil inside the overflow tank 801 is drained. When the piston head 803 moves and resets, the oil remaining on the inner wall of the overflow tank 801 can be scraped off to avoid its long-term accumulation and affect its use.

[0030] In a further embodiment, an electric valve 10 is installed on the recovery pipe 9, and the electric valve 10, the buzzer 11 and the squeeze switch 802 are electrically connected. The opening and closing of the devices corresponding to the controller, namely the electric valve 10 and the buzzer 11, by applying pressure to the squeeze switch 802 is prior art and will not be described in detail here.

[0031] Specifically, in the actual working process, the joint 2 and the pump filling pipe 5 are first connected to the corresponding equipment, and then the oil will enter the interior of the conveying pipe 1 through the joint 2, and flow into the flow monitoring mechanism 4 through the conveying pipe 1 and the branch pipe 3 in turn. The flow monitoring mechanism 4 will monitor its flow, and the oil discharged through the flow monitoring mechanism 4 is discharged into the centrifugal pump through the pump filling pipe 5 for pump filling operation. When the pump is saturated, the oil flows to the interior of the overflow tank 801 through the overflow pipe 7 under the action of the one-way valve 6, and pushes the piston head 803 to move. When the piston head 803 moves and contacts the squeezing switch 802, the squeezing switch 802 controls the buzzer 11 to warn, and at the same time opens the electric valve 10. The oil inside the overflow tank 801 will be discharged to the interior of the conveying pipe 1 through the recovery pipe 9 under the action of gravity, avoiding the overflow tank 801 from rupture due to excessive internal pressure, thereby improving the stability and safety of the device structure.

[0032] Embodiment 2

[0033] This embodiment is a further description of the above embodiment. It should be understood that this embodiment includes all the aforementioned technical features and is further described in detail.

[0034] like Figure 1 and Figure 3 As shown, in a further embodiment, the flow monitoring mechanism 4 includes a liquid inlet pipe 401, a flow monitoring component 402, a detection tank 403, a liquid discharge pipe 404 and a display panel 405, and the upper and lower ends of the detection tank 403 are respectively connected to the liquid inlet pipe 401 and the liquid discharge pipe 404, and the flow monitoring component 402 is installed inside the detection tank 403. The flow monitoring component 402 is a device for detecting flow, which is an existing device with mature technology and rich types, and is described in detail in the encyclopedia, and its structure and monitoring principle are not described in detail here.

[0035] In a further embodiment, the bottom of the liquid inlet pipe 401 is arranged above the flow monitoring component 402 , and the flow monitoring component 402 is electrically connected to the display panel 405 , and the display panel 405 is installed on the outer wall of the detection tank 403 .

[0036] Specifically, the flow monitoring component 402 monitors the oil flowing into the detection tank 403 through the liquid inlet pipe 401 and displays the detection result on the display panel 405, and the oil entering the detection tank 403 is discharged to the priming pipe 5 through the discharge pipe 404 for subsequent priming operation.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A monitoring device for a centrifugal pump filling operation, comprising a delivery pipeline (1) and an overflow warning mechanism (8), characterized in that: The two ends of the delivery pipeline (1) are respectively connected to the joint (2) and the branch pipe (3), and one end of the branch pipe (3) away from the delivery pipeline (1) is connected to the flow monitoring mechanism (4), while the other end of the flow monitoring mechanism (4) is connected to the filling pump pipeline (5). The overflow warning mechanism (8) is connected to the top of the filling pump pipeline (5) through the overflow pipeline (7). The overflow warning mechanism (8) comprises an overflow tank (801), a squeeze switch (802) and a piston head (803), and the overflow tank (801) is provided with a piston head (803). The overflow tank (801) is connected to the delivery pipeline (1) through a recovery pipeline (9).

2. A centrifugal pump priming operation monitoring device according to claim 1, characterized in that: The delivery pipeline (1) is S-shaped, and the concave portion of the delivery pipeline (1) is connected to the recovery pipeline (9).

3. A centrifugal pump priming operation monitoring device according to claim 1, characterized in that: The flow monitoring mechanism (4) comprises a liquid inlet pipe (401), a flow monitoring component (402), a detection tank (403), a liquid discharge pipe (404) and a display panel (405), wherein the upper and lower ends of the detection tank (403) are respectively connected to the liquid inlet pipe (401) and the liquid discharge pipe (404), and the flow monitoring component (402) is installed inside the detection tank (403).

4. A centrifugal pump priming operation monitoring device according to claim 3, characterized in that: The bottom of the liquid inlet pipe (401) is arranged above the flow monitoring component (402), and the flow monitoring component (402) is electrically connected to the display panel (405), while the display panel (405) is mounted on the outer wall of the detection tank (403).

5. A centrifugal pump priming operation monitoring device according to claim 1, characterized in that: A one-way valve (6) is installed on the filling pump pipe (5), and the one-way valve (6) is arranged on the inner side of the overflow pipe (7), and the overflow pipe (7) is inclined.

6. A centrifugal pump priming operation monitoring device according to claim 1, characterized in that: A buzzer (11) is installed on the outer wall of the overflow tank (801), and the buzzer (11) is arranged outside the squeeze switch (802).

7. A centrifugal pump priming operation monitoring device according to claim 1, characterized in that: The piston head (803) is slidably connected to the inside of the overflow tank (801), and the bottom of the overflow tank (801) is connected to the recovery pipe (9). At the same time, the piston head (803) is connected to a side wall of the overflow tank (801) away from the squeeze switch (802) through a return spring.

8. A centrifugal pump priming operation monitoring device according to claim 1, characterized in that: An electric valve (10) is installed on the recovery pipe (9), and the electric valve (10), the buzzer (11) and the squeeze switch (802) are electrically connected.

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