A compressor oil tank oil pressure monitoring system
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU JINCAN ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-08-07
AI Technical Summary
[0004]本申请的目的在于提供一种压缩机油箱油压监测系统，用于解决现有技术中压缩机因压力变送器信号误报造成异常停机的问题
[0024] This solution uses a first limiting member and a second limiting member to support and fix the first diffused silicon core and the second diffused silicon core respectively, preventing them from shaking or shifting in the pressure testing chamber.
Smart Images
Figure CN224606598U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of compressor oil tank pressure monitoring technology, and in particular to a compressor oil tank pressure monitoring system. Background Technology
[0002] During the production process, the oil pressure in the compressor oil tank is an important monitoring point. Once the measured signal value of the monitoring equipment is outside the upper or lower limit set at this point, an alarm will be triggered immediately and the compressor will be automatically stopped.
[0003] In related technologies, the method for monitoring oil tank pressure involves selecting a single measurement point, installing a pressure transmitter to measure the oil pressure, and connecting the measurement signal to the DCS control system. If the measured signal value at this point exceeds the upper or lower limits set for the required production oil pressure, the control system will alarm and interlock to stop the compressor. However, in actual production applications, false alarms due to pressure transmitter malfunctions or other factors frequently lead to abnormal compressor shutdowns. Frequent start-stop cycles cause significant wear and tear on compressors and other equipment, increase equipment maintenance costs and failure risks, and significantly reduce production efficiency. Summary of the Invention
[0004] The purpose of this application is to provide a compressor oil tank pressure monitoring system to solve the problem of abnormal shutdown of compressors caused by false alarms from pressure transmitter signals in the prior art.
[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution:
[0006] This application provides a compressor oil tank oil pressure monitoring system, including:
[0007] The compressor has multiple pressure measuring points on its oil tank;
[0008] A pressure measuring component is connected to each of the pressure measuring points, and the pressure measuring component is used to monitor the oil pressure in the compressor oil tank.
[0009] The controller is signal-connected to the pressure measuring component;
[0010] A safety interlock device is connected to the controller via a signal and is used to control the start and stop of the compressor.
[0011] This solution monitors the compressor oil tank pressure using multiple pressure sensing components. Compared to traditional single-point monitoring, multiple components monitor the oil tank pressure from different locations. The controller only activates the safety interlock to stop the compressor when the measurement signals from at least two sensing points exceed their upper and lower limits. This effectively avoids false alarms caused by a single malfunctioning or erroneous pressure sensing component. This solution prevents compressor shutdowns due to measurement errors, reduces unnecessary compressor downtime, lowers equipment start-up and shutdown frequency, extends equipment lifespan, and reduces maintenance and replacement costs.
[0012] Optionally, the pressure measuring component includes a body, within which a first pressure measuring chamber is defined. A first diffused silicon core and a control main board are disposed within the first pressure measuring chamber. The first diffused silicon core is electrically connected to the control main board, and the control main board is signal-connected to the controller. A first pressure tapping connector is disposed on the body, defining an oil passage communicating with the first pressure measuring chamber. The first pressure tapping connector is connected to a first branch pipe, which is connected to the pressure measuring point via a connecting valve.
[0013] The pressure measuring assembly body contains a first pressure measuring chamber, which houses a first diffused silicon core and a control main board, which are electrically connected. A first pressure tap on the main body defines an oil passage connecting to the first pressure measuring chamber. A first branch pipe connects to the pressure measuring point via a three-way valve, ensuring that oil pressure can be smoothly introduced into the first pressure measuring chamber for measurement. The first diffused silicon core, acting as a pressure sensing element, converts the oil pressure in the tank into an electrical signal. The control main board performs preliminary processing of the electrical signal and then transmits the data to the controller via a signal connection.
[0014] Optionally, the connecting valve is a three-way valve, and the three-way valve is signal-connected to the controller.
[0015] Optionally, a second pressure measuring chamber is defined within the main body, and a second diffused silicon core is disposed within the second pressure measuring chamber. The second diffused silicon core is electrically connected to the control main board. A second pressure tapping connector is disposed on the main body. The second pressure tapping connector defines an oil passage that communicates with the second pressure measuring chamber. The second pressure tapping connector is connected to a second branch pipe, and the second branch pipe is connected to the pressure measuring point through the three-way valve.
[0016] The main body also defines a second pressure measuring chamber, within which a second diffused silicon core is installed. This second diffused silicon core is also electrically connected to the control main board. A second pressure tap defines an oil passage connected to the second pressure measuring chamber, and the connected second branch pipe is also connected to the pressure measuring point via a three-way valve. The three-way valve has a one-inlet, two-outlet structure; the inlet is connected to the pressure measuring point, and the two outlets are connected to the first and second branch pipes respectively. The three-way valve is signal-connected to the controller, allowing remote control of its outlet opening and closing. Under normal monitoring conditions, the outlet of the three-way valve connected to the first branch pipe is open, and the outlet of the three-way valve connected to the second branch pipe is closed, with the first diffused silicon core performing oil pressure measurement. When the measurement signal of the first diffused silicon core of a pressure measuring component exceeds the upper or lower limit, the compressor will not stop running because multi-point monitoring is used and at least two pressure measuring points must be abnormal to trigger a shutdown. In this case, the controller in that pressure measuring component will close the outlet of the three-way valve connected to the first branch pipe and simultaneously open the outlet of the three-way valve connected to the second branch pipe, switching to the second diffused silicon core for measurement. If the measurement signal acquired by the second diffused silicon core also exceeds the upper or lower limit, the controller will activate the safety interlock device to stop the compressor from running, preventing equipment damage or safety accidents caused by abnormal oil pressure. If the measurement signal acquired by the second diffused silicon core is normal, the compressor will continue to operate normally. At this time, the operator can inspect the pressure measuring component. During the inspection, the pressure at the measuring point can be continuously monitored through the second diffused silicon core without stopping the machine.
[0017] The dual-chamber and dual-diffused silicon core design provides redundant measurement capabilities for the pressure sensing assembly. When one measurement channel malfunctions or has a large measurement error, it can switch to the other channel, avoiding measurement interruptions and false alarms caused by a single component failure or error, significantly improving the reliability and accuracy of oil pressure monitoring. In case of abnormalities in the pressure sensing assembly, the switching function of the three-way valve allows for repair and replacement of the faulty component without stopping the compressor, preventing production interruptions due to equipment downtime and improving production efficiency.
[0018] Optionally, the first pressure tap and the second pressure tap are connected to the first branch pipe and the second branch pipe respectively via flanges.
[0019] Flange connections offer advantages such as robust connections, excellent sealing, and easy disassembly. When the pressure testing components require maintenance, replacement, or repair, branch pipes can be quickly disassembled and installed, reducing downtime and improving work efficiency. Simultaneously, flange connections can withstand higher pressures, ensuring no leakage occurs during compressor oil tank pressure monitoring, guaranteeing measurement accuracy and system safety.
[0020] Optionally, the control motherboard is electrically connected to a wiring connector.
[0021] The control motherboard has electrical connections with connectors, which facilitate the connection and expansion of the control motherboard with other devices, improving the system's flexibility and compatibility.
[0022] Optionally, a sealing ring is provided between the first diffused silicon core and the contact surface of the first pressure measuring chamber, and between the second diffused silicon core and the contact surface of the second pressure measuring chamber.
[0023] Optionally, the first pressure measuring chamber is threadedly connected to a first limiting member, which abuts against the bottom surface of the first diffused silicon core; the second pressure measuring chamber is threadedly connected to a second limiting member, which abuts against the bottom surface of the second diffused silicon core.
[0024] This solution uses a first limiting member and a second limiting member to support and fix the first diffused silicon core and the second diffused silicon core respectively, preventing them from shaking or shifting in the pressure testing chamber.
[0025] Compared with existing technologies, the beneficial effects achieved by this application are as follows: This application monitors the oil pressure in the compressor oil tank by setting up multiple pressure measuring components. Compared with the traditional single-point monitoring method, multiple pressure measuring components monitor the oil pressure in the oil tank from different locations. When the measurement signals at at least two pressure measuring points exceed the upper and lower limits, the controller will activate the safety interlock device to stop the compressor from running, thereby effectively avoiding false alarms caused by the failure or measurement error of a single pressure measuring component. This application avoids compressor shutdown accidents caused by measurement errors of pressure measuring components, reduces unnecessary compressor downtime, lowers the start-up and shutdown frequency of the equipment, and extends the service life of the equipment. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of the overall structure of some embodiments provided in this application;
[0028] Figure 2 This is a schematic diagram of the pressure measurement component structure of some embodiments provided in this application.
[0029] Explanation of reference numerals in the attached drawings: 1-Compressor; 2-Pressure measuring component; 3-Controller; 4-Safety interlock device; 5-Connecting valve; 21-Body; 22-First diffused silicon core; 23-Control main board; 24-Second diffused silicon core; 25-Connecting connector; 26-Sealing ring; 27-First limiting element; 28-Second limiting element; 211-First pressure measuring chamber; 212-First pressure tapping connector; 213-First branch pipe; 214-Second pressure measuring chamber; 215-Second pressure tapping connector; 216-Second branch pipe; 217-Flange. Detailed Implementation
[0030] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure / application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.
[0031] Example 1
[0032] This embodiment describes a compressor oil tank pressure monitoring system, referencing... Figure 1 and Figure 2 The compressor oil tank pressure monitoring system in this embodiment includes a compressor 1. The compressor 1 oil tank has multiple pressure measuring points; in this embodiment, there are three pressure measuring points, located at the oil pump outlet, the middle section of the oil tank, and the end of the oil circuit, respectively. Each of the three pressure measuring points is connected to a pressure measuring component 2, which is used to detect the oil pressure in the compressor 1 oil tank at the measuring point. Furthermore, this embodiment also acquires the pressure data from the pressure measuring component 2 through a controller 3. The controller 3 is a SIXNET ET-GT-ST-2 model, and its signal is connected to a safety interlock device 4. The safety interlock device 4 is a YLR-B type quick-opening pressure vessel safety interlock device 4, which controls the opening and closing of the compressor 1.
[0033] This embodiment monitors the oil pressure in the compressor 1's oil tank using multiple pressure measuring components 2. Compared to the traditional single-point monitoring method, multiple pressure measuring components 2 monitor the oil pressure from different locations. Only when the measurement signals from at least two measuring points exceed the upper and lower limits will the controller 3 activate the safety interlock device 4 to stop the compressor 1. This effectively avoids false alarms caused by a malfunction or measurement error of a single pressure measuring component 2. This solution prevents accidental shutdowns of the compressor 1 due to measurement errors by the pressure measuring component 2, reduces unnecessary shutdowns of the compressor 1, lowers the frequency of equipment start-ups and shutdowns, thereby extending the equipment's service life and reducing maintenance and replacement costs.
[0034] Furthermore, the pressure measuring component 2 includes a body 21, within which a first pressure measuring chamber 211 is defined. A first diffused silicon core 22 and a control main board 23 are disposed within the first pressure measuring chamber 211. The first diffused silicon core 22 and the control main board 23 are electrically connected, and the control main board 23 is signal-connected to the controller 3. In this embodiment, the control main board 23 is an ABB Rosemount 2088G2S22D1B4M5HR5 model. The control main board 23 is electrically connected to a wiring connector 25, facilitating connection and expansion of the control main board 23 with other devices and improving the system's flexibility and compatibility. Furthermore, a first pressure tapping connector 212 is provided on the body 21. The first pressure tapping connector 212 defines an oil passage communicating with the first pressure measuring chamber 211. The first pressure tapping connector 212 is connected to a first branch pipe 213, which is connected to the pressure measuring point via a connecting valve 5.
[0035] In this embodiment, the pressure measuring component 2 body 21 has a first pressure measuring chamber 211 inside, which contains a first diffused silicon core 22 and a control main board 23, which are electrically connected. The first pressure tapping connector 212 on the body 21 defines an oil passage that communicates with the first pressure measuring chamber 211. The first branch pipe 213 connected to the pressure measuring point is connected via a three-way valve to ensure that the oil pressure can be smoothly introduced into the first pressure measuring chamber 211 for measurement. The first diffused silicon core 22, as a pressure sensing element, can convert the oil pressure in the oil tank into an electrical signal. The control main board 23 performs preliminary processing on the electrical signal and then transmits the data to the controller 3 through a signal connection.
[0036] Example 2:
[0037] Based on the same inventive concept as Embodiment 1, refer to Figure 1 and Figure 2 In this embodiment, the connecting valve 5 is a three-way valve, which is signal-connected to the controller 3. In this embodiment, a second pressure measuring chamber 214 is defined within the main body 21. A second diffused silicon core 24 is disposed within the second pressure measuring chamber 214 and is electrically connected to the control main board 23. A second pressure tapping connector 215 is disposed on the main body 21, defining an oil passage communicating with the second pressure measuring chamber 214. The second pressure tapping connector 215 is connected to a second branch pipe 216, which is connected to the pressure measuring point via the three-way valve.
[0038] In this embodiment, the three-way valve adopts a one-inlet, two-outlet structure. The inlet is connected to the pressure measuring point, and the two outlets are connected to the first branch pipe 213 and the second branch pipe 216, respectively. The three-way valve is signal-connected to the controller 3, and its outlet opening and closing can be remotely controlled by the controller 3. Under normal monitoring conditions, the outlet of the three-way valve connected to the first branch pipe 213 is open, and the outlet of the three-way valve connected to the second branch pipe 216 is closed, with the first diffused silicon core 22 performing oil pressure measurement. When the measurement signal of the first diffused silicon core 22 of a certain pressure measuring component 2 exceeds the upper and lower limits, the compressor 1 will not stop running because multi-point monitoring is used and at least two pressure measuring points must be abnormal to trigger a shutdown. At this time, in the pressure measuring component 2, the controller 3 will control the outlet of the three-way valve connected to the first branch pipe 213 to close, and simultaneously open the outlet of the three-way valve connected to the second branch pipe 216, switching to the second diffused silicon core 24 for measurement. If the measurement signal acquired by the second diffused silicon core 24 also exceeds the upper or lower limit, the controller 3 will activate the safety interlock device 4 to stop the compressor 1 from running, in order to prevent equipment damage or safety accidents caused by abnormal oil pressure. If the measurement signal acquired by the second diffused silicon core 24 is normal, the compressor 1 will continue to operate normally. At this time, the operator can inspect the pressure measuring component 2. During the inspection, the pressure at the measuring point can be continuously monitored through the second diffused silicon core 24 without stopping the machine.
[0039] The dual pressure chamber and dual diffused silicon core design of this embodiment provide redundant measurement capabilities for the pressure measuring component 2. When one measurement channel malfunctions or has a large measurement error, it can switch to the other channel for measurement, avoiding measurement interruptions and false alarms caused by a single component failure or error, greatly improving the reliability and accuracy of oil pressure monitoring. When the pressure measuring component 2 malfunctions, the switching function of the three-way valve allows for repair and replacement of the faulty component without stopping the compressor 1, avoiding production interruptions caused by equipment downtime and improving production efficiency.
[0040] In this embodiment, the first pressure tap 212 is connected to the first branch pipe 213 via a flange 217, and the second pressure tap 215 is connected to the second branch pipe 216 via a flange 217. The flange 217 connection offers advantages such as a secure connection, good sealing, and easy disassembly. When the pressure testing assembly 2 requires maintenance, replacement, or repair, the branch pipe can be quickly disassembled and installed, reducing downtime and improving work efficiency. Simultaneously, the flange 217 connection can withstand high pressure, ensuring that no leakage occurs during the oil pressure monitoring of the compressor 1's oil tank, guaranteeing the accuracy of the measurement and the safety of the system.
[0041] In this embodiment, sealing rings 26 are provided between the contact surfaces of the first diffused silicon core 22 and the first pressure measuring chamber 211, and between the contact surfaces of the second diffused silicon core 24 and the second pressure measuring chamber 214.
[0042] To ensure the stability of the first and second diffused silicon cores, in this embodiment, a first limiting member 27 is threadedly connected to the first pressure measuring chamber 211, and the first limiting member 27 abuts against the bottom surface of the first diffused silicon core 22. A second limiting member 28 is threadedly connected to the second pressure measuring chamber 214, and the second limiting member 28 abuts against the bottom surface of the second diffused silicon core 24. In this embodiment, the first limiting member 27 and the second limiting member 28 are self-tapping sleeves, which support and fix the first diffused silicon core 22 and the second diffused silicon core 24, preventing them from shaking or shifting within the pressure measuring chamber. In some implementations, the bottom of the main body 21 can be opened, allowing the first limiting member 27 and the second limiting member 28 to be removed from the bottom of the main body 21, facilitating inspection and maintenance of the interior of the first pressure measuring chamber 211 and the second pressure measuring chamber 214.
[0043] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this disclosure / application, and these improvements and modifications should also be considered within the protection scope of this disclosure / application.
Claims
1. A compressor oil tank oil pressure monitoring system, characterized in that, include: The compressor (1) has multiple pressure measuring points on its oil tank; Pressure measuring component (2), each pressure measuring point is connected to a pressure measuring component (2), the pressure measuring component (2) is used to monitor the oil pressure in the oil tank of the compressor (1); Controller (3), which is signal-connected to the pressure measuring component (2); The safety interlock device (4) is connected to the controller (3) by signal and is used to control the start and stop of the compressor (1).
2. The compressor oil tank oil pressure monitoring system according to claim 1, characterized in that, The pressure measuring component (2) includes a body (21), which defines a first pressure measuring chamber (211). The first pressure measuring chamber (211) is provided with a first diffused silicon core (22) and a control main board (23). The first diffused silicon core (22) is electrically connected to the control main board (23), and the control main board (23) is signal connected to the controller (3). The body (21) is provided with a first pressure tapping connector (212), which defines an oil passage that communicates with the first pressure measuring chamber (211). The first pressure tapping connector (212) is connected to a first branch pipe (213), which is connected to the pressure measuring point through a connecting valve (5).
3. The compressor oil tank oil pressure monitoring system according to claim 2, characterized in that, The connecting valve (5) is a three-way valve, and the three-way valve is signal-connected to the controller (3).
4. The compressor oil tank oil pressure monitoring system according to claim 3, characterized in that, The main body (21) defines a second pressure measuring chamber (214), and a second diffused silicon core (24) is provided in the second pressure measuring chamber (214). The second diffused silicon core (24) is electrically connected to the control main board (23). A second pressure tapping connector (215) is provided on the main body (21). The second pressure tapping connector (215) defines an oil passage that communicates with the second pressure measuring chamber (214). The second pressure tapping connector (215) is connected to a second branch pipe (216). The second branch pipe (216) is connected to the pressure measuring point through the three-way valve.
5. The compressor oil tank oil pressure monitoring system according to claim 4, characterized in that, The first pressure tap (212) and the second pressure tap (215) are connected to the first branch pipe (213) and the second branch pipe (216) respectively via flanges (217).
6. The compressor oil tank oil pressure monitoring system according to claim 4, characterized in that, The control board (23) is electrically connected to a wiring connector (25).
7. The compressor oil tank oil pressure monitoring system according to claim 4, characterized in that, A sealing ring (26) is provided between the contact surface of the first diffused silicon core (22) and the first pressure measuring chamber (211), and between the contact surface of the second diffused silicon core (24) and the second pressure measuring chamber (214).
8. The compressor oil tank oil pressure monitoring system according to claim 4, characterized in that, The first pressure measuring chamber (211) is internally threaded with a first limiting member (27), which abuts against the bottom surface of the first diffused silicon core (22); the second pressure measuring chamber (214) is internally threaded with a second limiting member (28), which abuts against the bottom surface of the second diffused silicon core (24).
9. The compressor oil tank oil pressure monitoring system according to claim 1, characterized in that, There are three pressure measuring points, which are located at the oil tank pump outlet, the middle section of the oil tank, and the end of the oil circuit of the compressor (1), respectively.