Monitoring device for oil leakage of hydraulic motor of tank bottom mud scraper

Abstract

The utility model provides a monitoring device for oil leakage of a hydraulic motor of a tank bottom mud scraper, which relates to the technical field of hydraulic system detection and can realize real-time monitoring of flow in an oil return pipe of the hydraulic motor and real-time monitoring of pressure difference between an oil filling pipe and the oil return pipe. When the flow and the pressure difference reach a threshold range and a difference range preset in the data processing control module in advance, an alarm and a remote notification instruction are executed immediately, so that a worker can know the oil leakage condition quickly and conveniently, and follow-up shutdown maintenance work can be carried out quickly immediately; the automation degree of the monitoring process for monitoring whether the hydraulic motor of the tank bottom mud scraper leaks oil or not is improved, monitoring is accurate, oil waste is reduced, and manual inspection is not needed.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic system detection technology, and more specifically, to a monitoring device for oil leakage of the hydraulic motor of a tank bottom scraper. Background Technology

[0002] During wastewater treatment, solid particles in the wastewater gradually settle to the bottom of the tank, forming sludge. The tank bottom scraper, with its unique mechanical structure, periodically scrapes away and collects this sludge, ensuring water clarity and the normal operation of the equipment. This function plays a crucial role in various wastewater treatment scenarios, such as urban wastewater treatment and industrial wastewater treatment.

[0003] Currently, during long-term operation, the hydraulic system of the bottom scraper may leak oil due to aging seals or mechanical wear in the hydraulic motor circuit. Existing technologies mostly rely on manual periodic inspections, but because the oil injection and return pipes of the hydraulic system are widely distributed, it is often difficult to detect hidden leaks in a timely manner, and the detection is often not timely enough. Consequently, there is a lack of automatic oil leakage monitoring devices for the hydraulic motor. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to propose a monitoring device for oil leakage of the hydraulic motor of the tank bottom scraper.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A monitoring device for oil leakage in the hydraulic motor of a tank bottom scraper includes a tank bottom scraper body, which comprises a hydraulic motor, an oil tank, a hydraulic pump, an oil injection pipe, and an oil return pipe. The oil tank is connected to the hydraulic pump, and the hydraulic pump is connected to the oil injection pipe. The oil injection pipe is connected to the hydraulic motor, and the hydraulic motor is connected to the oil tank via the oil return pipe.

[0007] It also includes monitoring components, which include a rotor flowmeter, a differential pressure transmitter, a data processing and control module, alarm components, a data transmission unit, and a user terminal.

[0008] The rotor flowmeter is detachably fixed to the return oil pipe via a flange;

[0009] The differential pressure transmitter is connected to both the oil injection pipe and the oil return pipe.

[0010] The data processing and control module is electrically connected to the rotor flow meter and the differential pressure transmitter respectively. The data processing and control module has a built-in preset threshold of 98-99% for the rotor flow meter and a pressure difference of 1-2% for the differential pressure transmitter.

[0011] The alarm device and the data transmission unit are electrically connected to the data processing control module, and the data transmission unit is electrically connected to the user terminal so that after the data processing control module receives the threshold and differential signals from the rotor flowmeter and the differential pressure transmitter at the same time, it executes the alarm command and remotely notifies the user.

[0012] Furthermore, the monitoring component also includes a self-powered power supply, which is electrically connected to the rotor flowmeter, differential pressure transmitter, data processing control module, alarm device, and data transmission unit.

[0013] Furthermore, the data processing control module is either a PLC or a DCS.

[0014] Furthermore, the alarm device is either an audible and visual alarm or a voice prompt device.

[0015] Furthermore, the user terminal is a computer in the monitoring room or a personal mobile phone.

[0016] Furthermore, the rotor flowmeter has flange covers on both ends of the connecting flanges, and the bottom of the flange covers is connected to the oil collection tank through an oil passage.

[0017] Furthermore, an oil purification filter is installed inside the oil collection tank.

[0018] When oil leakage occurs at the flanges at both ends of the rotor flowmeter, the leaked oil will move along the flange cover to its bottom, and then enter the oil collection tank along the oil path. Then, a small amount of impurities can be removed through the oil purification filter.

[0019] Furthermore, a level gauge is installed inside the oil collection tank, and the level gauge is electrically connected to an oil pump located at the bottom of the oil collection tank, with the oil pump connected to the oil tank.

[0020] In the above scheme, when the level gauge detects that the oil level in the oil collection tank has reached the preset height, it immediately sends a feedback signal to the data processing and control module. Then, the data processing and control module controls the oil pump to work and return this part of the oil to the oil tank for secondary use, thereby reducing the amount of oil leakage and waste.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] Compared to existing technologies, this device can achieve real-time monitoring of the flow rate in the hydraulic motor return pipe, and can also monitor the pressure difference between the injection and return pipes in real time. When both the flow rate and pressure difference reach the preset threshold range and difference range in the data processing control module, an alarm and remote notification command will be executed to facilitate staff to quickly know about the oil leak and promptly carry out subsequent shutdown and maintenance work. The automation level of the monitoring process for whether the hydraulic motor of the tank bottom scraper is leaking is improved and the monitoring is accurate, thereby reducing oil waste and eliminating the need for manual inspection. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the monitoring components;

[0025] Figure 3 This is a schematic diagram of the flange cover installation.

[0026] Figure 4 This is a schematic diagram of the oil pump installation.

[0027] Figure label:

[0028] 1. Tank bottom scraper body; 2. Hydraulic motor; 3. Oil tank; 4. Oil injection pipe; 5. Oil return pipe; 6. Monitoring components; 7. Rotor flow meter; 8. Differential pressure transmitter; 9. Data processing and control module; 10. Alarm device; 11. Data transmission unit; 12. User terminal; 13. Self-powered power supply; 14. Flange cover; 15. Oil circuit; 16. Oil collection tank; 17. Oil purification filter; 18. Oil pump; 19. Level gauge. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0030] like Figure 1 and Figure 2 As shown, a monitoring device for oil leakage of the hydraulic motor of a tank bottom scraper includes a tank bottom scraper body 1. The tank bottom scraper body 1 includes a hydraulic motor 2, an oil tank 3, a hydraulic pump, an oil injection pipe 4, and an oil return pipe 5 (the hydraulic pump is not shown in the figure). The oil tank 3 is connected to the hydraulic pump, and the hydraulic pump is connected to the oil injection pipe 4. The oil injection pipe 4 is connected to the hydraulic motor 2, and the hydraulic motor 2 is connected to the oil tank 3 through the oil return pipe 5.

[0031] It also includes monitoring component 6, which comprises a rotor flowmeter 7, a differential pressure transmitter 8, a data processing and control module 9, an alarm component 10, a data transmission unit 11, and a user terminal 12.

[0032] The rotor flowmeter 7 is detachably fixed to the return oil pipe 5 via a flange;

[0033] Differential pressure transmitter 8 is connected to oil injection pipe 4 and oil return pipe 5 respectively;

[0034] The data processing control module 9 is electrically connected to the rotor flow meter 7 and the differential pressure transmitter 8 respectively. The data processing control module 9 has a built-in preset threshold of 98-99% for the rotor flow meter 7 and a pressure difference of 1-2% for the differential pressure transmitter 8 (specifically, the data processing control module 9 is either a PLC or a DCS).

[0035] The alarm device 10 and the data transmission unit 11 are electrically connected to the data processing control module 9, and the data transmission unit 11 is electrically connected to the user terminal 12 so that after the data processing control module 9 receives the threshold and differential signals of the rotor flowmeter 7 and the differential pressure transmitter 8 at the same time, it executes the alarm command and remotely notifies (specifically, the alarm device 10 adopts one of the sound and light alarm or voice prompt, and the user terminal 12 is a computer in the monitoring room or a personal mobile phone).

[0036] Further optimizations to the embodiments of this utility model, such as... Figure 2 As shown, the monitoring component 6 also includes a self-powered power supply 13, which is electrically connected to the rotor flowmeter 7, the differential pressure transmitter 8, the data processing control module 9, the alarm device 10, and the data transmission unit 11. Specifically, the self-powered power supply 13 is DC24V.

[0037] The working process of this utility model:

[0038] First, when the hydraulic motor 2 is not leaking oil, the threshold of the rotor flowmeter 7 approaches 100%, and the pressure difference of the differential pressure transmitter 8 approaches 0. Initially, the threshold of the rotor flowmeter 7 is set to 98-99% in the data processing control module 9 to trigger an alarm command, and the pressure difference of the differential pressure transmitter 8 is set to 1-2% to trigger an alarm command. However, such a high threshold and low pressure difference are prone to false alarms. Therefore, only when the rotor flowmeter 7 and the differential pressure transmitter 8 simultaneously meet the numerical range requirements will the data processing control module 9 send a signal to the alarm device 10 and the data transmission unit 11 for automatic alarm and remote information notification. This allows for more intelligent real-time monitoring of whether the hydraulic motor 2 is leaking oil.

[0039] It should be noted that while the data processing control module 9 feeds back signals to the alarm element 10 and the data transmission unit 11, it can also control the hydraulic pump to stop, thereby avoiding more waste caused by continuous hydraulic oil supply.

[0040] Compared to existing technologies, this device can monitor the flow rate in the return oil pipe 5 of the hydraulic motor 2 in real time, and can also monitor the pressure difference between the oil injection pipe 4 and the return oil pipe 5 in real time. When both the flow rate and the pressure difference reach the preset threshold range and difference range in the data processing control module 9, an alarm and remote notification command will be executed to facilitate the staff to quickly know about the oil leak and then quickly carry out subsequent shutdown and maintenance work. The automation level of the monitoring process for whether the hydraulic motor 2 of the tank bottom scraper is leaking is improved and the monitoring is accurate, thereby reducing oil waste and eliminating the need for manual inspection.

[0041] In some embodiments, such as Figure 3 As shown, the flanges at both ends of the rotor flowmeter 7 are covered with flange covers 14, and the bottom of the flange covers 14 is connected to the oil collection tank 16 through the oil passage 15.

[0042] In a further optimization of the above embodiment, an oil purification filter 17 is provided in the oil collection tank 16. In this embodiment, when oil leakage occurs at the flanges at both ends of the rotor flowmeter 7, the leaked oil will move along the flange cover 14 to its bottom, and then enter the oil collection tank 16 along the oil passage 15. Then, a small amount of impurities can be removed by the oil purification filter 17.

[0043] In other embodiments, such as Figure 4 As shown, a level gauge 19 is installed inside the oil collection tank 16, and the level gauge 19 is electrically connected to an oil pump 18 connected to the bottom of the oil collection tank 16. The oil pump 18 is connected to the oil tank 3. In this embodiment, when the level gauge 19 detects that the oil level in the oil collection tank 16 has reached a preset height, it immediately sends a feedback signal to the data processing control module 9. Then, the data processing control module 9 controls the oil pump 18 to work and return this part of the oil to the oil tank 3 for secondary use, thereby reducing the amount of oil leakage and waste.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A kind of monitoring device of tank bottom mud scraper hydraulic motor oil leakage, including tank bottom mud scraper body (1), tank bottom mud scraper body (1) includes hydraulic motor (2), oil tank (3), hydraulic pump, oil injection pipe (4) and oil return pipe (5), oil tank (3) is communicated hydraulic pump and hydraulic pump is communicated oil injection pipe (4), oil injection pipe (4) is communicated hydraulic motor (2) and hydraulic motor (2) is communicated oil tank (3) by oil return pipe (5), it is characterized in that, Also include monitoring assembly (6), monitoring assembly (6) includes rotor flowmeter (7), differential pressure transmitter (8), data processing control module (9), alarm piece (10), data transmission unit (11) and user terminal (12), Rotor flowmeter (7) is detachably fixed on oil return pipe (5) by flange; Differential pressure transmitter (8) is communicated oil injection pipe (4) and oil return pipe (5) respectively; Data processing control module (9) is electrically connected with rotor flowmeter (7) and differential pressure transmitter (8) respectively, and the threshold value of preset rotor flowmeter (7) in data processing control module (9) is 98-99%, and the pressure difference of differential pressure transmitter (8) is 1-2%; Alarm piece (10) and data transmission unit (11) are electrically connected with data processing control module (9) respectively, and data transmission unit (11) is electrically connected with user terminal (12) to execute alarm instruction and remote notification after receiving the threshold value and difference signal of rotor flowmeter (7) and differential pressure transmitter (8) in data processing control module (9) simultaneously.

2. The apparatus for monitoring hydraulic motor leakage of a tank bottom mud scraper according to claim 1, wherein The monitoring assembly (6) further comprises a self-powered power supply (13), which is electrically connected with the rotor flowmeter (7), the differential pressure transmitter (8), the data processing control module (9), the alarm piece (10) and the data transmission unit (11) respectively.

3. The apparatus of claim 1, wherein the apparatus further comprises a sensor configured to detect a presence of oil in the hydraulic fluid. The data processing control module (9) is one of PLC or DCS.

4. The apparatus of claim 1 wherein, The alarm piece (10) uses one of audible and visual alarm or voice prompter.

5. The apparatus of claim 1 wherein, The user terminal (12) is a computer in the monitoring room or a personal mobile phone.

6. The apparatus of claim 1 wherein, The flange cover (14) is arranged on the flanges connected to both ends of the rotor flowmeter (7), and the bottom of the flange cover (14) is connected to an oil collection tank (16) through an oil passage (15).

7. A tank bottom mud scraper hydraulic motor oil leakage monitoring device according to claim 6, characterized in that, The oil collection tank (16) is provided with an oil purification screen (17) inside.

8. The apparatus of claim 6, wherein the apparatus further comprises a sensor configured to detect a presence of hydraulic fluid in the hydraulic fluid reservoir. The oil collection tank (16) is provided with a liquid level gauge (19) inside, and the liquid level gauge (19) is electrically connected with an oil pump (18) connected to the bottom of the oil collection tank (16), and the oil pump (18) is connected to the oil tank (3).

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