A dual-channel oil-in pressure sensor

Abstract

The utility model relates to the technical field of oil inlet type pressure sensor field, a double -channel oil inlet type pressure sensor, including connecting seat and rubber bush, the outer wall of connecting seat is fixedly connected with rubber bush, the outer wall of connecting seat is fixedly connected with the grommet, the inner wall of rubber bush is fixedly connected with data line, the output end of data line is connected with plug electrically, the outer wall of connecting seat is connected with external connection mechanism. The connecting cylinder of external connection mechanism and first baffle divide the internal space into two independent flow through areas, cooperate two injection connectors to access two independent oil liquid pipelines, can synchronously gather two pressure signals, adapt the scene such as hydraulic system and need many oil circuit monitoring, and independent channel collocates discharge connector, can export the surplus oil liquid in time, avoid two oil liquid mixed interference, guarantee pressure data accurate, make two -way pressure monitoring more stable and reliable, improve overall working efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of oil inlet pressure sensors, specifically a dual-channel oil inlet pressure sensor. Background Technology

[0002] In hydraulic systems, industrial fluid control, and other scenarios, it is necessary to simultaneously acquire pressure signals from two independent oil circuits. The pressure is then transmitted to the silicone oil through a metal elastic diaphragm, and then to the silicon wafer through the silicone oil. This achieves the conversion of pressure to resistance on the semiconductor silicon wafer, thereby converting the pressure signal into an electrical signal.

[0003] For example, the oil-filled pressure sensor core with overload protection, authorized by publication number "CN222258571U", solves the problem of unstable pressure measurement and even permanent damage to the silicon wafer caused by the existing oil-filled pressure sensor core with overload protection. However, the existing oil-filled pressure sensor core with overload protection has only a single oil injection channel, which is difficult to adapt to scenarios where multiple pipelines are monitored simultaneously. Its adaptability is poor. When multiple pipelines need to be monitored, the single-channel design requires frequent changes in installation position or the addition of additional sensors, which is cumbersome. Moreover, the oil injection and sealing processes must be carried out one by one for each single channel. In multi-pipeline monitoring scenarios, the process is repetitive and time-consuming, which seriously affects the overall pressure monitoring efficiency and cannot meet the actual needs of high efficiency and multiple monitoring. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the existing oil-filled pressure sensor core with overload protection cannot meet the actual needs of high efficiency and multiple monitoring with a single oil injection channel, and proposes a dual-channel oil-filled pressure sensor.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual-channel oil inlet pressure sensor, comprising a connecting base and a rubber sleeve, wherein the outer wall of the connecting base is fixedly connected to the rubber sleeve, the outer wall of the connecting base is fixedly connected to a gasket, the inner wall of the rubber sleeve is fixedly connected to a data cable, the output end of the data cable is electrically connected to a plug, and an external mechanism is connected to the outer wall of the connecting base.

[0006] This feature includes: a gasket to enhance the tightness of the connection between the connector and the external mounting structure, preventing loosening due to vibration or other factors; a rubber sleeve to limit and fix the data cable, reducing the risk of pulling damage during use; and a plug design to facilitate quick docking of the sensor with external devices.

[0007] Preferably, the external connection mechanism includes a connecting cylinder, the inner wall of the upper end of the connecting cylinder is threadedly connected to the connecting seat, the inner wall of the connecting cylinder is fixedly connected to the first partition plate, the lower end of the connecting cylinder is connected to the injection connector, and the outer wall of the connecting cylinder is connected to the discharge connector.

[0008] This feature includes: the connecting cylinder is fixed to the connecting seat via a threaded connection, facilitating installation, disassembly, and maintenance; the first partition divides the interior of the connecting cylinder into two independent flow areas, effectively preventing the oil injected from the two locations from mixing and interfering with each other inside the cylinder; two injection connectors are used to connect to external oil pipelines, while the discharge connectors can promptly discharge excess or circulated oil, forming a dual-channel oil flow path, which improves the stability and accuracy of pressure monitoring.

[0009] Preferably, the inner wall of the connecting seat is fixedly connected to the second partition, and the inner wall of the connecting seat is connected to an installation mechanism.

[0010] This feature: The second partition further divides the internal space of the connector, providing an independent and stable installation environment for the installation mechanism, avoiding mutual interference between different components, and also providing a certain degree of protection for the internal components, preventing external impurities or moisture from entering and affecting their performance.

[0011] Preferably, the mounting mechanism includes a convex ring, the outer wall of which is engaged with a groove machined in the connecting seat, the outer wall of which is fixedly connected to the mounting seat, the inner wall of the lower end of the mounting seat is threadedly connected to the base, the upper end of the mounting seat is threadedly connected to a pressure ring, and the surface of the pressure ring is fixedly connected to a diaphragm.

[0012] This feature: The locking fit between the convex ring and the connecting seat groove allows for quick initial positioning of the mounting base, ensuring accurate installation. The base is connected to the lower end of the mounting base via threads, providing stable support for the mounting base and facilitating subsequent maintenance and replacement of related components. The threaded connection between the pressure ring and the upper end of the mounting base securely fixes the diaphragm, preventing displacement or detachment under pressure. As a key component for pressure sensing, the diaphragm's stability directly affects the sensor's measurement accuracy.

[0013] Preferably, the inner wall of the mounting base is in contact with the ceramic gasket.

[0014] This feature: The ceramic gasket has excellent high temperature resistance and corrosion resistance, and can maintain stable physical and chemical properties in oily environments. This prevents the normal operation of the internal components of the mounting base from being affected by long-term oil corrosion. At the same time, its smooth surface can reduce wear on the internal pressure sensing module and processing chip, and extend the service life of the sensor.

[0015] Preferably, a pressure-sensing module and a processing chip are installed on the inner wall of the ceramic gasket, and the output terminal of the processing chip is electrically connected to the data line.

[0016] This setup: The pressure sensing module can sense the pressure signal transmitted by the oil through the dual channels in real time and convert the physical pressure parameters into electrical signals. The processing chip then quickly analyzes and processes the received electrical signals, using built-in algorithms to eliminate the influence of interference factors such as ambient temperature and oil viscosity, ensuring the accuracy and stability of the output signal. The output of the processing chip is electrically connected to the data line, which can transmit the processed pressure data to external display or control devices in a timely manner, realizing real-time monitoring and feedback of oil pressure. The processing chip stably transmits the processed pressure data to the connector via the data line, and then the connector establishes an electrical connection with the external device, forming a complete data transmission link, ensuring that the pressure signal can be efficiently and accurately transmitted to the external control system or monitoring terminal.

[0017] Preferably, the surface of the second partition is fixedly connected to the gasket, and the surface of the gasket is in contact with the first partition.

[0018] This setting: The gasket is made of oil-resistant rubber, which has good elasticity and sealing properties, and can tightly fill the gap between the second partition and the first partition, so that the connecting cylinder forms two working flow areas that do not affect each other.

[0019] The present invention proposes a dual-channel oil-inlet pressure sensor, which has the following advantages: the internal space is divided into two independent flow areas by the connecting cylinder of the external mechanism and the first partition plate, and two injection connectors are connected to two independent oil pipelines, which can simultaneously collect two pressure signals. This is suitable for scenarios such as hydraulic systems that require monitoring of multiple oil lines. In addition, the independent channels are equipped with discharge connectors, which can promptly discharge excess oil, avoid mixing and interference between the two oil lines, ensure accurate pressure data, make dual-channel pressure monitoring more stable and reliable, and improve overall work efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Schematic diagram of the external connection mechanism; Figure 3 for Figure 1 Schematic diagram of the discharge connector structure; Figure 4 for Figure 1 Schematic diagram of the combination of the middle connector and the mounting base; Figure 5 for Figure 2 3D schematic diagram of the installation mechanism; Figure 6 for Figure 2Schematic diagram of the three-dimensional structure of the mounting base; Figure 7 for Figure 5 Schematic diagram of the internal assembly structure of the mounting base.

[0021] In the diagram: 1. Connector, 2. Rubber sleeve, 3. Washer ring, 4. Data cable, 5. Plug, 6. External mechanism, 601. Connecting cylinder, 602. First partition, 603. Injection connector, 604. Discharge connector, 7. Second partition, 8. Mounting mechanism, 801. Protruding ring, 802. Mounting base, 803. Base, 804. Pressure ring, 805. Diaphragm, 9. Ceramic gasket, 10. Pressure sensing module, 11. Processing chip, 12. Gasket. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings: Please see Figure 1-7 In this embodiment, a dual-channel oil inlet pressure sensor includes a connector 1 and a rubber sleeve 2. The outer wall of the connector 1 is fixedly connected to the rubber sleeve 2, and the outer wall of the connector 1 is fixedly connected to the gasket 3. The inner wall of the rubber sleeve 2 is fixedly connected to the data cable 4. The output end of the data cable 4 is electrically connected to the plug 5. An external mechanism 6 is connected to the outer wall of the connector 1.

[0023] The external mechanism 6 includes a connecting cylinder 601. The inner wall of the upper end of the connecting cylinder 601 is threadedly connected to the connecting seat 1. The inner wall of the connecting cylinder 601 is fixedly connected to the first partition 602. The first partition 602 divides the internal space of the connecting cylinder 601 into two independent areas, so that the two oil lines can flow in their respective areas. The lower end of the connecting cylinder 601 is connected to the injection connector 603. There are two injection connectors 603, which are respectively connected to the two independent flow areas separated by the first partition 602 in the connecting cylinder 601. They can be connected to different external oil circuit systems to realize the synchronous acquisition of the hydraulic pressure of the two independent oil lines. The outer wall of the connecting cylinder 601 is connected to the discharge connector 604. The connecting cylinder 601 and the first partition 602 of the external mechanism 6 divide the internal space into two independent flow areas. With the help of two injection connectors 603, they can connect to two independent oil pipelines, which can simultaneously collect two pressure signals. This is suitable for scenarios such as hydraulic systems that require monitoring of multiple oil lines. The independent channel is equipped with a discharge connector 604, which can promptly discharge excess oil, avoid mixing and interference between the two oil lines, ensure accurate pressure data, make dual-line pressure monitoring more stable and reliable, and improve overall work efficiency.

[0024] The inner wall of the connecting seat 1 is fixedly connected to the second partition 7. The inner wall of the connecting seat 1 is connected to the mounting mechanism 8. The mounting mechanism 8 includes a convex ring 801. The outer wall of the convex ring 801 is locked with the slot machined in the connecting seat 1 to ensure that the mounting seat 802 is stably installed in the connecting seat. The outer wall of the convex ring 801 is fixedly connected to the mounting seat 802. The inner wall of the lower end of the mounting seat 802 is threadedly connected to the base 803. The upper end of the mounting seat 802 is threadedly connected to the pressure ring 804. The surface of the pressure ring 804 is fixedly connected to the diaphragm 805.

[0025] The inner wall of the mounting base 802 is in contact with the ceramic gasket 9. The inner wall of the ceramic gasket 9 is equipped with a pressure sensing module 10 and a processing chip 11. The output end of the processing chip 11 is electrically connected to the data line 4. The surface of the second partition 7 is fixedly connected to the gasket 12, and the surface of the gasket 12 is in contact with the first partition 602.

[0026] Working principle: Overall assembly First, fix the second partition 7 to the inner wall of the connecting seat 1, and install the gasket 12 on the surface of the second partition 7 to ensure sealing performance. Then, insert the protruding ring 801 of the mounting mechanism 8 into the slot machined in the connecting seat 1 to complete the initial positioning of the mounting seat 802.

[0027] Ceramic gasket 9 is attached to the inner wall of mounting base 802, and pressure sensing module 10 and processing chip 11 are installed on the inner wall of ceramic gasket 9 to ensure that both are in a stable position.

[0028] The base 803 is threaded to the lower end of the mounting base 802, and the upper end is threaded to the pressure ring 804. The pressure ring 804 is used to fix the diaphragm 805, ensuring that the diaphragm 805 is firmly installed.

[0029] The connecting cylinder 601 is threaded to the outer wall of the connecting seat 1, so that the first partition 602 and the gasket 12 fit tightly together, separating an independent flow area.

[0030] Finally, fix the data cable 4 to the inner wall of the rubber sleeve 2, with one end electrically connected to the processing chip 11 and the other end connected to the plug 5. At the same time, fix the rubber sleeve 2 and the washer 3 to the outer wall of the connector 1 to complete the overall assembly.

[0031] Usage process In use, the two injection connectors 603 at the lower end of the connecting cylinder 601 are connected to two independent external oil pipelines to form a dual-channel oil inlet structure.

[0032] After the oil enters, it does not mix with the other fluids due to the separation of the first partition 602, and the pressure is transmitted to the interior through the diaphragm 805.

[0033] The pressure sensing module 10 senses the pressure of the two oil channels in real time, converts the physical pressure into an electrical signal, and transmits it to the processing chip 11.

[0034] The processing chip 11 eliminates interference factors such as temperature and oil viscosity, analyzes and processes the electrical signal, and then transmits it to an external device through the data cable 4 and the plug 5.

[0035] Excess or recycled oil is discharged through the discharge joint 604 on the outer wall of the connecting cylinder 601, forming a complete flow circuit.

[0036] The gasket 3 enhances the fit between the connector 1 and the external mounting structure, and the rubber sleeve 2 protects the data cable 4 to prevent pulling damage, ensuring long-term stable operation of the sensor and enabling synchronous and accurate monitoring of the pressure of the two oil circuits.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-channel oil-inlet pressure sensor, comprising a connecting base (1) and a rubber sleeve (2), wherein the outer wall of the connecting base (1) is fixedly connected to the rubber sleeve (2), characterized in that: The outer wall of the connector (1) is fixedly connected to the gasket (3), the inner wall of the rubber sleeve (2) is fixedly connected to the data cable (4), the output end of the data cable (4) is electrically connected to the plug (5), the outer wall of the connector (1) is connected to an external mechanism (6), the external mechanism (6) includes a connecting cylinder (601), the inner wall of the upper end of the connecting cylinder (601) is threadedly connected to the connector (1), the inner wall of the connecting cylinder (601) is fixedly connected to the first partition (602), the lower end of the connecting cylinder (601) is connected to the injection connector (603), and the outer wall of the connecting cylinder (601) is connected to the discharge connector (604).

2. The dual-channel oil inlet pressure sensor according to claim 1, characterized in that: The inner wall of the connecting seat (1) is fixedly connected to the second partition (7), and the inner wall of the connecting seat (1) is connected to the mounting mechanism (8).

3. The dual-channel oil inlet pressure sensor according to claim 2, characterized in that: The mounting mechanism (8) includes a convex ring (801), the outer wall of which is clamped to a slot machined in the connecting seat (1), the outer wall of which is fixedly connected to the mounting seat (802), the inner wall of the lower end of the mounting seat (802) is threadedly connected to the base (803), the upper end of the mounting seat (802) is threadedly connected to the pressure ring (804), and the surface of the pressure ring (804) is fixedly connected to the diaphragm (805).

4. The dual-channel oil inlet pressure sensor according to claim 3, characterized in that: The inner wall of the mounting base (802) is in contact with the ceramic gasket (9).

5. The dual-channel oil inlet pressure sensor according to claim 4, characterized in that: The inner wall of the ceramic gasket (9) is equipped with a pressure sensing module (10) and a processing chip (11), and the output end of the processing chip (11) is electrically connected to the data line (4).

6. The dual-channel oil inlet pressure sensor according to claim 5, characterized in that: The surface of the second partition (7) is fixedly connected to the gasket (12), and the surface of the gasket (12) is in contact with the first partition (602).

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