Lubrication detection device
阅读说明:本技术 润滑检测装置 (Lubrication detection device ) 是由 陈�峰 张欣 丁晓武 尚朋飞 刘志辉 胡炼 陆军 王成 张顶福 韩凤梅 郭兴建 于 2018-09-05 设计创作,主要内容包括:本发明提供一种润滑检测装置。本发明的润滑检测装置连接在回油管道中,润滑检测装置包括用于检测油液颗粒度的在线检测单元,润滑检测装置还包括消泡单元,消泡单元和在线检测单元依次连接在回油管道之间;消泡单元包括相互连通的负压容器和去泡容器,负压容器用于接收来自回油管道的油液,并利用负压将油液内的气泡析出;去泡容器用于接收析出气泡后的油液,并将油液输送至在线检测单元。本发明的润滑检测装置检测效率高、并且能够实现实时检测。(The invention provides a lubrication detection device. The lubricating detection device is connected in an oil return pipeline, the lubricating detection device comprises an online detection unit for detecting the oil granularity, and the lubricating detection device also comprises a defoaming unit, wherein the defoaming unit and the online detection unit are sequentially connected between the oil return pipelines; the defoaming unit comprises a negative pressure container and a defoaming container which are communicated with each other, wherein the negative pressure container is used for receiving oil liquid from the oil return pipeline and separating out bubbles in the oil liquid by utilizing negative pressure; the defoaming container is used for receiving the oil liquid after the bubbles are separated out and conveying the oil liquid to the online detection unit. The lubrication detection device is high in detection efficiency and capable of realizing real-time detection.)
1. A lubrication detection device is connected in an oil return pipeline and comprises an online detection unit for detecting oil granularity, and the lubrication detection device is characterized by further comprising a defoaming unit, wherein the defoaming unit and the online detection unit are sequentially connected between the oil return pipelines; the defoaming unit comprises a negative pressure container and a defoaming container which are communicated with each other, the negative pressure container is used for receiving oil liquid from the oil return pipeline and separating out bubbles in the oil liquid by utilizing negative pressure; the defoaming container is used for receiving oil liquid after bubbles are separated out and conveying the oil liquid to the online detection unit.
2. The lubrication detection device of claim 1, wherein the negative pressure container and the de-foaming container are sealingly connected by a transfer assembly;
the conveying assembly comprises a conveying pipeline connected between the negative pressure container and the defoaming container, a conveying rod and a first driving device, wherein the conveying rod and the first driving device are positioned in the conveying pipeline, the conveying rod can rotate around the axis of the conveying rod under the driving of the first driving device, a conveying part protruding outwards is arranged on the rod body of the conveying rod, and a cavity for conveying oil is formed at the contact part of the conveying part and the conveying pipeline; when the transportation rod rotates, the position of the cavity changes correspondingly along with the cyclic movement of the conveying part, and the cavity is communicated with the negative pressure container or the defoaming container in turn in the position changing process, so that oil in the negative pressure container enters the defoaming container through the cavity.
3. The lubrication detection device of claim 2, wherein the transport rod is a screw rod.
4. The lubrication detection apparatus according to claim 2 or 3, wherein the bubble removal unit further comprises a controller, a negative pressure sensor, and a vacuum pump, the negative pressure sensor and the vacuum pump being electrically connected to the controller, the negative pressure sensor being configured to detect a pressure in the negative pressure container, the controller being configured to control the vacuum pump to pump gas in the negative pressure container according to the pressure detected by the negative pressure sensor.
5. The lubrication detection device according to claim 4, wherein at least one of the inside of the negative pressure container and the defoaming container is provided with a level gauge for measuring a liquid level;
the controller is electrically connected with the liquid level meter and used for controlling the working state of the vacuum pump according to the liquid level.
6. The lubrication detection device according to any one of claims 1 to 3, wherein the defoaming container is located below the negative pressure container, an oil baffle is obliquely arranged in the defoaming container, the bottom end of the oil baffle is located at the bottom of the defoaming container, and the top end of the oil baffle extends to the upper part of the defoaming container.
7. The lubricant detection device according to any one of claims 1 to 3, wherein the defoaming container is provided with an air inlet, a third one-way valve and a breather valve are sequentially arranged outside the air inlet, and the flow direction of the third one-way valve is directed to the inside of the defoaming container.
8. The lubrication detection device according to any one of claims 1-3, further comprising a Y-strainer, said Y-strainer being located between said return line and said bubble removal unit.
9. The lubrication detection device according to claim 8, wherein a sampler for collecting an oil sample is further disposed between the oil return pipe and the Y-shaped filter.
10. The lubrication detection device according to any one of claims 1-3, wherein a first one-way valve is arranged between the oil return line and the bubble removal unit; and/or a second one-way valve is arranged between the online detection unit and the oil return pipeline.
Technical Field
The embodiment of the invention relates to the technical field of petrochemical equipment abrasion and lubrication detection, in particular to a lubrication detection device.
Background
The requirements of long-period and stable operation of the petrochemical industry put higher requirements on operation predictive maintenance and active maintenance of high-speed rotating equipment in the petrochemical industry. The equipment abrasion and lubrication detection technology is an important component of the equipment running state detection technology, and plays an increasingly important role in the decision-making work of equipment predictive maintenance and active maintenance technology. In order to meet the timeliness of the lubricating state analysis and evaluation of the abrasion and lubrication detection on the equipment operation, the development and research of the online abrasion and lubrication detection device become research hotspots of academic circles and professional research institutions at home and abroad at present.
The air inevitably enters a lubricating oil system during the operation of equipment, for example, air is sucked into an oil tank, a pump and an oil suction pipe during the operation of mechanical transmission parts, an oil path and a seal leak gas occur, oil flow of an oil return pipe is stirred suddenly, and a large amount of bubbles are inevitably generated. The air bubbles in the lubricating oil used by the equipment can cause the partial lubrication of the friction pair of the equipment to be poor, the oil temperature to be increased, cavitation to be caused, vibration and noise of the system to be caused and the like. But also has great influence on the accuracy and stability of the online real-time detection of the abrasion and lubrication of the equipment. At present, compared with the traditional bubble removing method at home and abroad, oil is mainly placed in a system oil tank to wait for bubble removal passively, or oil inlets and oil outlets of the system oil tank are arranged far away as possible, and the volume of the oil tank is increased. And after bubbles are eliminated, the petrochemical rotating equipment real-time detection system takes out the defoamed oil for use.
However, in either method, since the bubbles in the oil are very small, it is difficult to float the oil surface by its own buoyancy, and the defoaming time is generally long. In addition, what traditional defoaming mode adopted is the mode of off-line defoaming, and the fluid intermediate time interval that can use the defoaming is than longer from the defoaming, consequently, traditional bubble gets rid of the method and has the problem of defoaming inefficiency, unable real-time online defoaming to lead to whole petrochemical industry rotary equipment real-time detection system's detection efficiency low, unable real-time detection.
Disclosure of Invention
The embodiment of the invention provides a lubrication detection device which is high in detection efficiency and capable of realizing real-time online detection.
The embodiment of the invention provides a lubrication detection device which is connected in an oil return pipeline, the lubrication detection device comprises an online detection unit for detecting the granularity of oil, and a defoaming unit, wherein the defoaming unit and the online detection unit are sequentially connected between the oil return pipelines; the defoaming unit comprises a negative pressure container and a defoaming container which are communicated with each other, wherein the negative pressure container is used for receiving oil liquid from the oil return pipeline and separating out bubbles in the oil liquid by utilizing negative pressure; the defoaming container is used for receiving the oil liquid after the bubbles are separated out and conveying the oil liquid to the online detection unit.
Optionally, the negative pressure container and the defoaming container are hermetically connected through the conveying assembly;
the conveying assembly comprises a conveying pipeline connected between the negative pressure container and the defoaming container, a conveying rod positioned in the conveying pipeline and a first driving device, the conveying rod can rotate around the axis of the conveying rod under the driving of the first driving device, a conveying part protruding outwards is arranged on the rod body of the conveying rod, and a cavity used for conveying oil is formed at the contact part of the conveying part and the conveying pipeline; when the transport rod rotates, the position of the chamber is correspondingly changed along with the cyclic movement of the conveying part, and the chamber is communicated with the negative pressure container or the defoaming container in turn in the position changing process, so that oil in the negative pressure container enters the defoaming container through the chamber.
Optionally, the transport rod is a screw rod.
Optionally, the defoaming unit further comprises a controller, a negative pressure sensor and a vacuum pump, wherein the negative pressure sensor and the vacuum pump are both electrically connected with the controller, the negative pressure sensor is used for detecting the pressure in the negative pressure container, and the controller is used for controlling the vacuum pump to pump the gas in the negative pressure container according to the pressure detected by the negative pressure sensor.
Optionally, at least one of the negative pressure container and the defoaming container is provided with a liquid level meter for measuring the liquid level; the controller is electrically connected with the liquid level meter and is used for controlling the working state of the vacuum pump according to the liquid level.
Optionally, the defoaming container is located below the negative pressure container, an oil baffle is obliquely arranged in the defoaming container, the bottom end of the oil baffle is located at the bottom of the defoaming container, and the top end of the oil baffle extends to the upper portion of the defoaming container.
Optionally, the defoaming container is provided with an air inlet, a third one-way valve and a breather valve are sequentially arranged outside the air inlet, and the flow direction of the third one-way valve points to the inside of the defoaming container.
Optionally, the lubrication detection device further comprises a Y-filter, the Y-filter being located between the oil return conduit and the bubble removal unit.
Optionally, a sampler for collecting an oil sample is further disposed between the oil return pipeline and the Y-shaped filter.
Optionally, a first check valve is arranged between the oil return pipeline and the defoaming unit; and/or a second one-way valve is arranged between the online detection unit and the oil return pipeline.
The lubrication detection device comprises an online detection unit for detecting the oil granularity, and a defoaming unit, wherein the defoaming unit and the online detection unit are sequentially connected between the oil return pipelines; the defoaming unit comprises a negative pressure container and a defoaming container which are communicated with each other, wherein the negative pressure container is used for receiving oil liquid from the oil return pipeline and separating out bubbles in the oil liquid by utilizing negative pressure; the defoaming container is used for receiving the oil liquid after the bubbles are separated out and conveying the oil liquid to the online detection unit. The defoaming unit arranged in the lubrication detection device provided by the embodiment of the invention receives oil containing bubbles from the oil return pipeline to defoam, and transmits the defoamed oil to the online detection unit, namely, in the whole defoaming process, the oil is continuously defoamed in real time by the negative pressure container and then transmitted to the defoaming container, the defoaming container transmits the defoamed oil to the online detection unit in real time, and the whole process is a dynamic real-time process.
Drawings
Fig. 1 is a schematic overall structure diagram of a lubrication detection device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a bubble removal unit according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a delivery assembly according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another configuration of a bubble removal unit according to an embodiment of the present invention.
Description of reference numerals:
1-a first one-way valve;
2, a sampler;
a 3-Y filter;
4-an electromagnetic valve;
55-a defoaming unit;
51-a negative pressure container;
52-defoaming container;
53-a first level gauge;
54-a second level gauge;
56-a conveying pipeline;
57-transport rods;
6-a vacuum pump;
7-a negative pressure sensor;
8-driving a motor;
9-a third one-way valve;
10-a breather valve;
11-a second one-way valve;
12-a controller;
13-an oil return line;
14-an online detection unit;
58-oil baffle;
15-fourth one-way valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of an entire lubrication detection apparatus according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a bubble removal unit according to an embodiment of the present invention. As shown in fig. 1 and fig. 2, the lubrication detection device of the present embodiment is connected to the
The lubricating detection device of the embodiment defoams by being provided with the
In the defoaming process, the
Alternatively, in the lubrication detecting apparatus of the present invention, the
The conveying assembly comprises a conveying
According to the arrangement mode, a cavity capable of carrying oil is formed at the contact part of the conveying
Optionally, the
As an optional embodiment, the bubble removing unit further includes a
Optionally, a solenoid valve 4 connected to the
In a further modification of the above embodiment, at least one of the
Fig. 4 is a schematic structural diagram of another structure of the bubble removing unit according to the embodiment of the present invention, and specifically, as shown in fig. 4, when a first
Further, the
Optionally, as shown in fig. 2 and 4, the
The embodiment is further improved, and the lubrication detection device of the embodiment further comprises a Y-shaped filter 3, wherein the Y-shaped filter 3 is located between the
The operation of the lubrication detecting device having the above-described structure will be described below.
The lubricated detection device of this embodiment is connected with
The operation of the lubrication detection apparatus of the present embodiment will be described in detail with reference to the operation of the
Firstly, the controller 12 controls the vacuum pump 6 to start working, negative pressure is generated in the negative pressure container 51, simultaneously the negative pressure sensor 7 detects the negative pressure value in the negative pressure container 51, when the rated negative pressure value is reached, the controller 12 controls the electromagnetic valve 4 connected with the Y-shaped filter 3 to be opened, so that the oil liquid filtered by the Y-shaped filter 3 flows into the negative pressure container 51 through the electromagnetic valve 4, the negative pressure defoaming process of the negative pressure container 51 starts, the liquid level of the oil liquid in the negative pressure container 51 gradually rises along with the continuous inflow of the oil liquid, the first liquid level meter 53 detects the liquid level in the negative pressure container 51 and feeds back the liquid level to the controller 12, when the lower limit of the liquid level of the negative pressure container 51 is reached, the controller 12 controls the driving motor 8 and the online detection unit 14 to start working, in more detail, the driving motor 8 drives the transport rod 57 (hereinafter referred to as a screw rod) to start rotating, and extrudes the defoamed oil, the oil just entering the defoaming container 52 is decelerated through the buffering of the oil baffle 58, then flows from top to bottom along the oil baffle 58, is stored at the bottom of the defoaming container 52, and flows into the on-line detection unit 14 through an oil outlet (not shown) arranged at the bottom of the defoaming container 52, and a particle size sensor (not shown) is arranged in the on-line detection unit 14 to detect the particle size of the lubricating oil, so that the working condition of the petrochemical rotating equipment is detected and evaluated in real time. In addition, during the defoaming process, the
In the defoaming process, if the
In addition, if the
In this way, the
In the above description, the negative pressure defoaming process is performed in the negative pressure container 51, bubbles in the oil escape to a space above the oil during the negative pressure defoaming, and when the liquid level of the oil in the negative pressure container 51 is higher than a certain preset value (i.e. an upper limit of the liquid level of the negative pressure container 51), the oil is boiled, so that hydrocarbon components are generated in the oil, thereby reducing the quality of the lubricating oil, meanwhile, during the boiling process, the oil is likely to enter the vacuum pump 6, so that when the liquid level in the negative pressure container 51 is higher than an upper limit of the liquid level of the negative pressure container 51, the controller 12 controls the electromagnetic valve 4 to close to prevent more oil from entering the negative pressure container 51 and further raising the liquid level of the oil, and at this time, the controller 12 should close the vacuum pump 6 to prevent the oil from entering the vacuum pump 6 and damaging the; when the oil liquid level detected by the first liquid level meter 53 is lower than the upper limit of the liquid level of the negative pressure container 51, the controller 12 controls the vacuum pump 6 to be turned on again to perform a normal negative pressure defoaming process.
In order to compare and verify the actual effect of the invention, an experimenter selects 250ml of lubricating oil (China Petroleum Kunlun brand No. 48 turbine oil) in a real-time detection system of petrochemical rotating equipment before and after treatment as compared oil samples respectively. The experimental results are as follows: the oil sample directly extracted from the oil discharge port of the petrochemical rotating equipment real-time detection system is creamy yellow in color and contains micro bubbles. The color of the oil sample treated by the bubble eliminating device of the lubrication detection device is changed into clear and transparent light yellow. From the above experiments, it can be seen that the lubrication detecting apparatus of the present invention effectively removes the fine bubbles contained in the lubricating oil, and the color of the lubricating oil changes from yellow turbidity to clear pale yellow. In addition, by eliminating micro bubbles dissolved and mixed in the lubricating oil, the invention effectively reduces and reduces the error of the granularity detection result in the real-time detection system of the petrochemical rotating equipment, improves the real-time detection precision of the lubricating oil in the petrochemical rotating equipment, and finally can provide more reliable and effective data support for equipment state monitoring and fault diagnosis.
In addition, the lubrication detection device is connected in the oil return pipeline, the lubrication detection device comprises an online detection unit for detecting the oil particle size, the lubrication detection device also comprises a defoaming unit, and the defoaming unit and the online detection unit are sequentially connected between the oil return pipelines; the defoaming unit comprises a negative pressure container and a defoaming container which are communicated with each other, wherein the negative pressure container is used for receiving oil liquid from the oil return pipeline and separating out bubbles in the oil liquid by utilizing negative pressure; the defoaming container is used for receiving the oil liquid after the bubbles are separated out and conveying the oil liquid to the online detection unit. The lubricating detection device provided by the embodiment of the invention is provided with the defoaming unit, the defoaming unit receives oil containing bubbles from the oil return pipeline to defoam, and transmits the defoamed oil to the online detection unit, the negative pressure container continuously defoams the oil in real time in the whole defoaming process and transmits the defoamed oil to the defoaming container, and the defoaming container transmits the defoamed oil to the online detection unit in real time.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In addition, in the present invention, unless otherwise explicitly specified or limited, the terms "connected," "fixed," "mounted," and the like are to be construed broadly, e.g., as mechanical or electrical connections; the terms may be directly connected or indirectly connected through an intermediate, and may be used for communicating between two elements or for interacting between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
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