Oil-flow-free switch detection device
By designing an oil-free flow switch detection device including magnetic columns and magnetic detection mechanisms, the problems of reduced detection accuracy and high false alarm rate of traditional oil-free flow switches are solved, and higher data accuracy and lower maintenance costs are achieved.
Patent Information
- Application Number
- CN202421918284.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-08-08
AI Technical Summary
In actual applications, traditional oil-free flow switches have problems such as decreasing detection accuracy and increasing false alarm rate, and the maintenance and replacement costs are high.
An oil-free flow switch detection device is designed, using a magnetic column and a magnetic detection mechanism, including a housing and a measuring unit. The measuring unit is electrically connected to the lubricating oil system of the compressor, and the movement data of the oil is obtained through changes in magnetic induction intensity.
The device can obtain the flow of oil without contact, improve the convenience and accuracy of data acquisition, reduce false alarm rates, and reduce maintenance and replacement costs.
Smart Images
Figure CN222964692U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of detection equipment, and particularly relates to an oil-free flow switch detection device. Background Art
[0002] In the field of mechatronic applications, especially in the lubrication monitoring technology of compressor systems, the oil-free flow switch, as an important safety protection device, its performance and reliability are crucial for the stable operation of equipment.
[0003] Traditional oil-free flow switches mainly control the operation of compressors by detecting the oil pressure and oil flow changes in the lubricating oil system to prevent equipment failures caused by insufficient or interrupted lubricating oil. However, these traditional oil-free flow switches still have some significant technical defects in practical applications.
[0004] The accuracy and stability of traditional oil-free flow switches need to be improved. These switches usually rely on mechanical components to conduct with the oil circuit to monitor the flow of lubricating oil. These mechanical components are prone to wear and contamination during long-term use, resulting in a decrease in detection accuracy and an increase in false alarm rate. In addition, due to the complexity and vulnerability of mechanical components, the maintenance and replacement costs of these switches are relatively high. Summary of the Utility Model
[0005] In order to solve the problems such as the decrease in detection accuracy and the increase in false alarm rate existing in the prior art, the present application provides an oil-free flow switch detection device.
[0006] To achieve the above object, the technical solution adopted in the present application is: an oil-free flow switch detection device, comprising: a magnetic column and a magnetic detection mechanism arranged on an oil distributor, the magnetic detection mechanism includes a housing and a measurement unit for obtaining the change in the magnetic field intensity of the magnetic column, the measurement unit is arranged inside the housing, and the measurement unit is electrically connected to the lubricating oil system of the compressor; the magnetic column includes an outer sleeve, a pushing spring, a magnetic slide bar and an oil pressure transmission rod, the outer sleeve has a guiding groove, the pushing spring is arranged inside the guiding groove, the magnetic slide bar is slidably arranged inside the guiding groove, one end of the magnetic slide bar abuts against one end of the pushing spring away from the bottom of the guiding groove, the oil pressure transmission rod is slidably arranged inside the guiding groove, one end of the oil pressure transmission rod abuts against the end of the magnetic slide bar away from the pushing spring, and the other end of the oil pressure transmission rod extends into the oil distributor.
[0007] In some embodiments of the present utility model, the above measurement unit includes a pcb board, a control module and a Hall sensor, the control module and the Hall sensor are both arranged on the pcb board, the control module and the Hall sensor are electrically connected, and the control module is electrically connected to the lubricating oil system of the compressor.
[0008] In some embodiments of the present utility model, an oil circuit indicator light is provided on the above-mentioned PCB board, and the oil circuit indicator light is connected to the control module.
[0009] In some embodiments of the present utility model, one end of the above-mentioned outer sleeve located outside the housing is provided with a connector for connecting to an oil distributor.
[0010] In some embodiments of the present utility model, the above-mentioned connector is integrally formed with the magnetic column.
[0011] In some embodiments of the present utility model, both the above-mentioned connector and the magnetic column are made of magnetic materials.
[0012] Beneficial effects:
[0013] The present utility model provides an oil flow switch detection device, including: a magnetic column and a magnetic detection mechanism arranged on an oil distributor, the magnetic detection mechanism includes a housing and a measurement unit for obtaining the change in the magnetic field intensity of the magnetic column, the measurement unit is arranged inside the housing, and the measurement unit is electrically connected to the lubricating oil system of the compressor; the magnetic column includes an outer sleeve, a push spring, a magnetic slide rod and an oil pressure transmission rod, the outer sleeve has a guide groove, the push spring is arranged in the guide groove, the magnetic slide rod is slidably arranged in the guide groove, one end of the magnetic slide rod abuts against one end of the push spring away from the bottom of the guide groove, the oil pressure transmission rod is slidably arranged in the guide groove, one end of the oil pressure transmission rod abuts against the end of the magnetic slide rod away from the push spring, and the other end of the oil pressure transmission rod extends into the oil distributor. The above-mentioned housing is used for installing and protecting the measurement unit. The above-mentioned measurement unit is used for measuring and obtaining the magnetic induction intensity generated by the magnetic slide rod, facilitating the acquisition of the movement data of the oil fluid according to the magnetic induction intensity, thereby controlling the safe operation of the whole machine and improving the safety of the operation. The above-mentioned magnetic column is arranged on the outer wall of the oil distributor, the outer sleeve of the magnetic column is detachably connected to the oil distributor, the push spring, the magnetic slide rod and the oil pressure transmission rod are all installed inside the outer sleeve, one end of the above-mentioned oil pressure transmission rod extends into the oil distributor, and there is a piston for driving the oil pressure transmission rod inside the oil distributor. During use, when there is high-pressure oil fluid passing through the inside of the above-mentioned oil distributor, the pressure of the oil fluid drives the piston to move, and the moving piston pushes the oil pressure transmission rod to gradually extend into the outer sleeve. As the oil pressure transmission rod continuously enters, the push spring is gradually compressed, the magnetic slide rod is pushed away from the oil distributor, and the magnetic slide rod approaches the monitoring unit, so that the monitoring unit obtains a high-intensity magnetic field. If the magnetic detection mechanism does not obtain a magnetic field with a preset intensity value, it indicates that there is no oil fluid passing through the oil distributor.
[0014] Therefore, for this oil flow switch detection device, it can directly obtain the flow condition of the oil fluid without contacting the oil fluid, improving the convenience and accuracy of data acquisition. Description of the Drawings
[0015] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.
[0016] Figure 1 Structural schematic of the embodiment of the present application Figure 1 ;
[0017] Figure 2 Structural schematic of the embodiment of the present application Figure 2 ;
[0018] Figure 3 Exploded view of the embodiment of the present application;
[0019] Figure 4 Cross-sectional view of the magnetic column of the embodiment of the present application.
[0020] In the figure: 1 - oil distributor; 2 - housing; 3 - measurement unit; 301 - pcb board; 302 - control module; 303 - Hall sensor; 4 - oil circuit indicator light; 5 - magnetic column; 501 - outer sleeve; 502 - push spring; 503 - magnetic slide bar; 504 - oil pressure transfer rod; 6 - joint. Detailed implementation manners
[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application to be protected, but only represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.
[0023] It should be noted that: similar reference numerals and letters represent similar items in the following accompanying drawings. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings.
[0024] In the description of the present application, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, in the description of the present application, if terms such as "first", "second", etc. are used only for differential description, they should not be construed as indicating or implying relative importance.
[0025] In addition, in the description of the present application, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0026] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "linked" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0027] Embodiment
[0028] Please refer to Figures 1 - 3 , this embodiment provides an oil-free flow switch detection device, including: a magnetic column 5 and a magnetic detection mechanism arranged on the oil distributor 1. The magnetic detection mechanism includes a housing 2 and a measurement unit 3 for obtaining the change in the magnetic field strength of the magnetic column 5. The measurement unit 3 is arranged inside the housing 2, and the measurement unit 3 is electrically connected to the lubricating oil system of the compressor; the magnetic column 5 includes an outer sleeve 501, a pushing spring 502, a magnetic slide bar 503, and an oil pressure transmission rod 504. The outer sleeve 501 has a guiding groove (not marked in the figure), the pushing spring 502 is arranged in the guiding groove, the magnetic slide bar 503 is slidably arranged in the guiding groove, one end of the magnetic slide bar 503 abuts against one end of the pushing spring 502 away from the bottom of the guiding groove, the oil pressure transmission rod 504 is slidably arranged in the guiding groove, one end of the oil pressure transmission rod 504 abuts against the end of the magnetic slide bar 503 away from the pushing spring 502, and the other end of the oil pressure transmission rod 504 extends into the oil distributor 1.
[0029] It should be noted that the oil-free flow switch, also known as the flow switch, is an electrical switch device used to detect the flow of liquids or gases. Its main function is to automatically disconnect or connect the circuit when the flow rate reaches a predetermined value to control the flow rate and pressure of the fluid. The working principle of the oil-free flow switch is based on its built-in measuring tube and electrical control unit. When the fluid enters the measuring tube, due to the narrowing and expansion of the pipeline, the flow rate of the fluid will change, thereby causing a change in the flow resistance. When the flow resistance reaches the predetermined value, the electrical control unit will automatically disconnect or connect the circuit to achieve flow control.
[0030] In this embodiment, the above-mentioned magnetic column 5 is arranged on the outer wall of the oil distributor 1. The outer sleeve 501 of the magnetic column 5 is detachably connected to the oil distributor. The push spring 502, the magnetic slide rod 503 and the oil pressure transmission rod 504 are all installed in the outer sleeve 501. One end of the above-mentioned oil pressure transmission rod 504 extends into the oil distributor 1. There is a piston (not shown in the figure) in the oil distributor 1 for driving the oil pressure transmission rod 504. During use, there is high-pressure oil passing through the inside of the above-mentioned oil distributor 1. The pressure of the oil drives the piston to move. The moving piston pushes the oil pressure transmission rod 504 to gradually extend into the outer sleeve 501. As the oil pressure transmission rod 504 continuously enters, the push spring 502 is gradually compressed, and the magnetic slide rod 503 is pushed away from the oil distributor 1. The magnetic slide rod 503 moves closer to the monitoring unit, so that the monitoring unit obtains a high-intensity magnetic field. If the magnetic detection mechanism does not obtain a magnetic field with a preset intensity value, it indicates that there is no oil passing through the oil distributor 1.
[0031] Specifically, the above-mentioned housing 2 is used to install and protect the measuring unit 3. The above-mentioned measuring unit 3 is used to measure and obtain the magnetic induction intensity generated by the magnetic slide rod 503, so as to facilitate obtaining the motion data of the oil based on the magnetic induction intensity, thereby controlling the safe operation of the whole machine and improving the safety of the operation.
[0032] Please refer to Figures 1 - 3 , in some implementation manners of this embodiment, the above-mentioned measuring unit 3 includes a pcb board 301, a control module 302 and a Hall sensor 303. The control module 302 and the Hall sensor 303 are both arranged on the pcb board 301. The control module 302 and the Hall sensor 303 are electrically connected. The control module 302 is electrically connected to the lubricating oil system of the compressor.
[0033] In this embodiment, the above-mentioned PCB board 301 plays an important role in electrical connection in the oil flow switch detection device. Through the wires printed on the board, it connects various electronic components to form a complete working circuit, ensuring the normal and stable operation of the detection device; it also serves as a support for the components, ensuring that each component in the oil flow switch detection device can be firmly fixed on the board, thus forming a compact and solid whole. The above-mentioned control module 302 is used to process the signals received from the Hall sensor 303. These signals reflect the flow state of the liquid or gas. The received signals are processed through the circuits or microprocessors inside the control module 302, including steps such as signal amplification, filtering, and conversion, to ensure the accuracy and stability of the signals. The above-mentioned Hall sensor 303 is used to convert the detected magnetic field change into an electrical signal output. These electrical signals can be further received and processed by the processing unit to achieve functions such as flow monitoring, abnormal alarm, or automatic control.
[0034] Please refer to Figure 2 , in some implementation manners of this embodiment, an oil circuit indicator light 4 is provided on the above-mentioned PCB board 301, and the oil circuit indicator light 4 is connected to the control module 302.
[0035] In this embodiment, the above-mentioned oil circuit indicator light 4 visually shows the state of the oil circuit to the operator through its lighting and extinguishing. During use, when the oil circuit is unobstructed and the flow is normal, the indicator light may remain constantly on or show green; while when the oil circuit is blocked, the flow is abnormal, or there is no oil flow through, the indicator light may go out, flash, or turn red to remind the operator to pay attention. The oil circuit indicator light 4 can quickly issue a warning signal when there is a fault or abnormal situation in the oil circuit system. This helps the operator to promptly discover and handle potential problems, avoiding the expansion of the fault or causing more serious consequences. During the fault troubleshooting process, the state of the oil circuit indicator light 4 can be used as important reference information. By observing the lighting and extinguishing or color change of the indicator light, the operator can initially judge the problem in the oil circuit system and thus conduct further inspections and repairs targeted.
[0036] Please refer to Figure 3 , in some implementation manners of this embodiment, a joint 6 for connecting with the oil distributor 1 is provided at one end of the above-mentioned magnetic column 5 located outside the housing 2.
[0037] In this embodiment, the above-mentioned joint 6 has a hexagonal nut and a guide sleeve extending into the oil distributor 1. The outer wall of the guide sleeve has an external thread, and the hexagonal nut is used to drive the entire magnetic column 5 to rotate and is connected to the oil distributor 1 through the guide sleeve.
[0038] Please refer to Figure 3 , in some implementation manners of this embodiment, the above-mentioned joint 6 and the magnetic column 5 are integrally formed.
[0039] In this embodiment, there is no interface inside the integrally formed part, avoiding the possible weakness problems at the interfaces in traditional assembled parts. This seamless connection makes the overall strength of the part higher, enabling it to withstand greater loads and stresses. Since the integrally formed part is formed in one go using a mold, it has high manufacturing precision and stable product dimensional accuracy, ensuring stable performance of the part during long-term use.
[0040] Please refer to Figure 1 , in some implementation manners of this embodiment, both the above-mentioned joint 6 and the magnetic column 5 are made of magnetic materials.
[0041] In this embodiment, the above-mentioned magnetic materials include, but are not limited to, neodymium iron boron, ferrite, and alnico materials, which are used to form a stable magnetic field, facilitating the acquisition of the magnetic field change state through the Hall sensor 303.
[0042] During use, the magnetic column 5 is installed on the outer wall of the oil distributor 1 through the joint 6, and then the housing 2 is inserted onto the magnetic column 5. The change in the magnetic field of the magnetic column 5 is obtained through the Hall sensor 303. According to the change in the magnetic field, the change in the movement state of the oil can be obtained through the control module 302. The oil path indicator light 4 changes its working state according to the obtained change in the oil state, and the control module 302 controls the operation of the entire lubricating oil system according to the change in the movement state of the oil.
[0043] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.
Claims
1. An oil-free flow switch detection device, characterized in that: include: A magnetic column (5) and a magnetic detection mechanism are arranged on the oil distributor (1), the magnetic detection mechanism comprising a housing (2) and a measuring unit (3) for obtaining changes in the magnetic field intensity of the magnetic column (5), the measuring unit (3) being arranged in the housing (2), and the measuring unit (3) being electrically connected to the lubricating oil system of the compressor; The magnetic column (5) includes an outer sleeve (501), a push spring (502), a magnetic slide bar (503) and an oil pressure transmission rod (504), wherein the outer sleeve (501) has a guide groove, the push spring (502) is arranged in the guide groove, the magnetic slide bar (503) is slidably arranged in the guide groove, one end of the magnetic slide bar (503) abuts against one end of the push spring (502) away from the bottom of the guide groove, the oil pressure transmission rod (504) is slidably arranged in the guide groove, one end of the oil pressure transmission rod (504) abuts against one end of the magnetic slide bar (503) away from the push spring (502), and the other end of the oil pressure transmission rod (504) extends into the oil distributor (1).
2. The oil-free flow switch detection device according to claim 1, characterized in that: The measuring unit (3) comprises a PCB (301), a control module (302) and a Hall sensor (303); the control module (302) and the Hall sensor (303) are both arranged on the PCB (301); the control module (302) and the Hall sensor (303) are electrically connected; and the control module (302) is electrically connected to a lubricating oil system of a compressor.
3. The oil-free flow switch detection device according to claim 2, characterized in that: An oil circuit indicator light (4) is provided on the PCB (301), and the oil circuit indicator light (4) is connected to the control module (302).
4. The oil-free flow switch detection device according to claim 1, characterized in that: One end of the outer sleeve (501) located outside the housing (2) is provided with a joint (6) for connecting to the oil distributor (1).
5. The oil-free flow switch detection device according to claim 4, characterized in that: The joint (6) and the magnetic column (5) are integrally formed.
6. The oil-free flow switch detection device according to claim 5, characterized in that: The joint (6) and the magnetic column (5) are both made of magnetic materials.