Tar on-line water content analysis control electrical system

Abstract

The utility model belongs to the technical field of control electrical systems, and particularly relates to a tar online water content analysis control electrical system, which is characterized in that a user power supply system is electrically connected with an isolating switch, and the isolating switch is electrically connected with a first circuit breaker, a second circuit breaker and a third circuit breaker respectively; the first circuit breaker is electrically connected with a normally open contact of a first three-phase alternating current contactor, the normally open contact of the first three-phase alternating current contactor is electrically connected with a coil of a first overheating load relay, and the coil of the first overheating load relay is electrically connected with a first pump. The moisture content in tar can be monitored in real time, and data can be remotely transmitted to a computer in a central control room to be recorded and displayed, so that the problems of long consumed time and low efficiency of the traditional test are solved, and the production efficiency is improved. And through real-time monitoring and automatic control, the high-water-content condition can be found and treated in time, potential safety hazards caused by excessive water are prevented, and the safety of the production process is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of control electrical systems, and in particular relates to an online water content analysis and control electrical system for tar. Background Art

[0002] An online moisture-in-tar analyzer is a device used to monitor the moisture content of tar in real time. Typically installed at the oil unloading port, this instrument monitors the tar flowing through it in real time and transmits the data to a computer in the central control room for recording and display. This online monitoring technology not only improves detection efficiency but also addresses the time-consuming and environmentally sensitive nature of traditional manual sampling and testing. However, the electrical control system of the online moisture-in-tar analyzer has been severely degraded due to years of operation and poor operating environments. Some electrical control systems have design or construction defects that gradually became apparent during the production process, impacting the system's stability and reliability. The electrical control systems of traditional online moisture-in-tar analyzers suffer from low efficiency, a high probability of failure, and relatively high ongoing maintenance costs, all of which severely impact the system's stability and reliability. Utility Model Content

[0003] Aiming at the technical problems of low working efficiency, high failure probability and relatively high subsequent maintenance cost of the electrical control system of the above-mentioned traditional tar water content online analyzer, the utility model provides a tar online water content analysis control electrical system.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A tar online water content analysis and control electrical system includes a user power supply system, an isolating switch, a first circuit breaker, a second circuit breaker, a third circuit breaker, a fourth circuit breaker, a fifth circuit breaker, a first three-phase AC contactor, a second three-phase AC contactor, a first overheating load relay, a second overheating load relay, a first pump, a second pump, a first electric regulating valve, and a second electric regulating valve. The user power supply system is electrically connected to the isolating switch, and the isolating switch is electrically connected to the first circuit breaker, the second circuit breaker, and the third circuit breaker respectively. The first circuit breaker is electrically connected to the normally open contact of the first three-phase AC contactor. The normally open contact of the first three-phase AC contactor is electrically connected to the coil of the first overheat load relay, the coil of the first overheat load relay is electrically connected to the first pump, the coil of the first overheat load relay is electrically connected to the first electric control valve through the fourth circuit breaker, the second circuit breaker is electrically connected to the normally open contact of the second three-phase AC contactor, the normally open contact of the second three-phase AC contactor is electrically connected to the coil of the second overheat load relay, the coil of the second overheat load relay is electrically connected to the second pump, and the coil of the second overheat load relay is electrically connected to the second electric control valve through the fifth circuit breaker.

[0006] The isolating switch is electrically connected to the sixth circuit breaker and the seventh circuit breaker respectively, the sixth circuit breaker is electrically connected to the programming power supply, the seventh circuit breaker is electrically connected to the guide rail power supply, and the guide rail power supply is electrically connected to the PLC power supply, the smart Internet of Things touch screen, and the industrial network switch respectively.

[0007] The isolating switch is electrically connected to the first indicator light, the normally open contact of the first intermediate relay, and the normally open contact of the second intermediate relay, respectively; the normally open contact of the first intermediate relay is electrically connected to the normally closed contact of the first overheat load relay, and the normally closed contact of the first overheat load relay is electrically connected to the coil of the first three-phase AC contactor and the second indicator light, respectively; the normally open contact of the second intermediate relay is electrically connected to the normally closed contact of the second overheat load relay, and the normally closed contact of the second overheat load relay is electrically connected to the coil of the second three-phase AC contactor and the third indicator light.

[0008] The PLC power supply wire is connected to a PLC module. The PLC module includes a first PLC control unit, a second PLC control unit and a third PLC control unit. The first PLC control unit is provided with a communication bus plug.

[0009] The first PLC control unit is electrically connected to the discharge control box, the first PLC control unit is electrically connected to the third circuit breaker, and the first PLC control unit is electrically connected to the coil of the first intermediate relay, the coil of the second intermediate relay, and the fourth indicator light.

[0010] It also includes a first signal isolator, a second signal isolator, a third signal isolator and a fourth signal isolator. The second PLC control unit is electrically connected to the OUT pins of the first signal isolator, the second signal isolator, the third signal isolator and the fourth signal isolator, respectively. The POWER pins of the first signal isolator, the second signal isolator, the third signal isolator and the fourth signal isolator are all electrically connected to the PLC power supply. The IN pin of the first signal isolator is electrically connected to the first electric regulating valve, the IN pin of the second signal isolator is electrically connected to the second electric regulating valve, the IN pin of the third signal isolator is electrically connected to the electromagnetic flowmeter, and the IN pin of the fourth signal isolator is electrically connected to the water content analyzer.

[0011] It also includes a fifth signal isolator and a sixth signal isolator. The third PLC control unit is electrically connected to the IN pins of the fifth signal isolator and the sixth signal isolator, respectively. The POWER pins of the fifth signal isolator and the sixth signal isolator are both electrically connected to the PLC power supply. The OUT pin of the fifth signal isolator is electrically connected to the first electric control valve, and the OUT pin of the sixth signal isolator is electrically connected to the second electric control valve.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This new system can monitor the moisture content of tar in real time and transmit the data to a computer in the central control room for recording and display. This solves the time-consuming and inefficient problems of traditional laboratory tests and improves production efficiency. Furthermore, through real-time monitoring and automatic control, this system can promptly detect and address high moisture content, preventing potential safety hazards caused by excessive moisture and ensuring the safety of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons skilled in the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, provided they do not affect the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0016] Figure 1 The circuit of the utility model Figure 1 ;

[0017] Figure 2 The circuit of the utility model Figure 2 ;

[0018] Figure 3 The circuit of the utility model Figure 3 ;

[0019] Figure 4 The circuit of the utility model Figure 4 ;

[0020] Figure 5The circuit of the utility model Figure 5 ;

[0021] Figure 6 The circuit of the utility model Figure 6 ;

[0022] Figure 7 The circuit of the utility model Figure 7 ;

[0023] Figure 8 The circuit of the utility model Figure 8 .

[0024] Among them: YH is the user power supply system, Q1 is the disconnector, F1 is the first circuit breaker, F2 is the second circuit breaker, F3 is the third circuit breaker, F4 is the fourth circuit breaker, F5 is the fifth circuit breaker, F6 is the sixth circuit breaker, F7 is the seventh circuit breaker, KM1 is the first three-phase AC contactor, KM2 is the second three-phase AC contactor, FR1 is the first overload relay, FR2 is the second overload relay, P1 is the first pump, P2 is the second pump, XF1 is the first electric regulating valve, XF2 is the second electric regulating valve, XS1 is the programming power supply, V1 is the guide rail power supply, L is the PLC power supply, U1 is the intelligent object Networked touch screen, U2 is the industrial network switch, H1 is the first indicator light, H2 is the second indicator light, H3 is the third indicator light, H4 is the fourth indicator light, K1 is the first intermediate relay, K2 is the second intermediate relay, A1 is the first PLC control unit, A2 is the second PLC control unit, A3 is the third PLC control unit, DP1 is the communication bus plug, B1 is the first signal isolator, B2 is the second signal isolator, B3 is the third signal isolator, B4 is the fourth signal isolator, B5 is the fifth signal isolator, B6 is the sixth signal isolator, E is the electromagnetic flowmeter, and W is the water content analyzer. DETAILED DESCRIPTION

[0025] In order to make the purpose, 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. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. These descriptions are only to further illustrate the features and advantages of the present invention, rather than to limit the claims of the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0026] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0029] An electrical system for analyzing and controlling the online water content of tar, such as Figure 1As shown, disconnector Q1 serves as the main switch for the entire system, connecting and disconnecting the power supply to the entire user power supply system YH. When system maintenance or overhaul is required, disconnector Q1 can be operated to disconnect the power supply, ensuring system safety. Disconnector Q1 is electrically connected to the first circuit breaker F1, the second circuit breaker F2, and the third circuit breaker F3. The primary function of circuit breakers is to protect circuits and prevent damage to equipment caused by short circuits and overloads. When a short circuit or overload occurs in a circuit, the circuit breakers automatically trip, cutting off power, thereby protecting the circuit and equipment. The first circuit breaker F1 is electrically connected to the normally open contacts of the first three-phase AC contactor KM1, and the second circuit breaker F2 is electrically connected to the normally open contacts of the second three-phase AC contactor KM2. The contactors control the starting and stopping of the motor. When the contactor coil is energized, its normally open contacts close, starting the motor; when the coil is de-energized, the normally open contacts open, stopping the motor. The normally open contact of the first three-phase AC contactor KM1 is electrically connected to the coil of the first overload relay FR1, while the normally open contact of the second three-phase AC contactor KM2 is electrically connected to the coil of the second overload relay FR2. The first and second overload relays FR1 and FR2 monitor the motor temperature. When the motor temperature exceeds a set value, the overload relays cut off the power supply to the motor to prevent damage from overheating. The coil of the first overload relay FR1 is electrically connected to the first pump P1, which is also electrically connected to the first electric control valve XF1 via the fourth circuit breaker F4. The coil of the second overload relay FR2 is electrically connected to the second pump P2, which is also electrically connected to the second electric control valve XF2 via the fifth circuit breaker F5. When the overload relays detect that the motor temperature is too high, they cut off the power supply to the pumps, stopping their operation. The first and second electric control valves XF1 and XF2 regulate the fluid flow to ensure normal system operation.

[0030] Further, if Figure 2As shown, ensure that the isolation switch Q1 is closed to allow current to flow. Connect the sixth circuit breaker F6 to the isolation switch Q1. Then, connect the programming power supply XS1 to the sixth circuit breaker F6. The programming power supply XS1 generally needs to provide appropriate voltage and current to support PLC operation. Connect the seventh circuit breaker F7 to the isolation switch Q1. Then, connect the DIN rail power supply V1 to the seventh circuit breaker F7. The DIN rail power supply V1 is responsible for providing power to the PLC power supply L, the smart IoT touch screen U1, and the industrial network switch U2. Connect the PLC power supply L to the DIN rail power supply V1. The PLC power supply L must ensure stable AC or DC power to support the normal operation of the PLC base unit and expansion units. Connect the smart IoT touch screen U1 to the DIN rail power supply V1. The touch screen requires a stable power supply to maintain continuous and reliable operation. Connect the industrial network switch U2 to the DIN rail power supply V1. Ensure that an appropriate power adapter is used and that the cable connections are secure and reliable.

[0031] Further, if Figure 3 As shown, the isolating switch Q1 is electrically connected to the first indicator light H1, the normally open contact of the first intermediate relay K1, and the normally open contact of the second intermediate relay K2. When the isolating switch Q1 is closed, the first indicator light H1, the normally open contact of the first intermediate relay K1, and the normally open contact of the second intermediate relay K2 all receive power. The normally open contact of the first intermediate relay K1 is electrically connected to the normally closed contact of the first overheating relay FR1. The normally closed contact of the first overheating relay FR1 opens when the normally open contact of the first intermediate relay K1 closes, and vice versa. The normally closed contact of the first overheating relay FR1 is electrically connected to the coil of the first three-phase AC contactor KM1 and the second indicator light H2. When the normally closed contact of the first overheating relay FR1 opens, the coil of the first three-phase AC contactor KM1 and the second indicator light H2 receive power. The normally open contact of the second intermediate relay K2 is electrically connected to the normally closed contact of the second overheating relay FR2. This indicates that the normally closed contacts of the second overload relay FR2 open when the normally open contacts of the second intermediate relay K2 close, and vice versa. The normally closed contacts of the second overload relay FR2 are electrically connected to the coil of the second three-phase AC contactor KM2 and the third indicator light H3. When the normally closed contacts of the second overload relay FR2 open, the coil of the second three-phase AC contactor KM2 and the third indicator light H3 receive power.

[0032] Further, if Figure 3-6As shown, the first PLC control unit A1 is equipped with a communication bus plug DP1, which enables the PLC to communicate with other PLCs via a DP / DP coupler. The first PLC control unit A1 is electrically connected to the discharge control box CP1. The PLC can control the operation of the discharge control box through its output port, thereby achieving automated control of the tar discharge process. The first PLC control unit A1 is electrically connected to the third circuit breaker F3. As a circuit protection device, the circuit breaker's closed or open state can be controlled by the PLC to ensure safe circuit operation. The first PLC control unit A1 is electrically connected to the coils of the first intermediate relay K1 and the second intermediate relay K2, respectively. Intermediate relays have high electrical insulation properties, effectively protecting circuits and improving electrical safety. By controlling the coils of these relays, the PLC can start and stop related equipment. The first PLC control unit A1 is also electrically connected to a fourth indicator light H4. Indicator lights are typically used to display the operating status or alarm information of equipment. By controlling the on and off of the indicator lights by the PLC, the operating status of the equipment can be intuitively understood.

[0033] Further, if Figure 7As shown, the first signal isolator B1, the second signal isolator B2, the third signal isolator B3, and the fourth signal isolator B4 each receive signals from different devices and transmit them to the second PLC control unit A2. A PLC power supply L provides a stable power supply for all signal isolators. According to conventional PLC power supply wiring practices, the PLC input is typically connected to an AC 220V power supply, while the output is connected to a DC 24V power supply. In this embodiment, the POWER pins of all signal isolators are connected to the PLC power supply L to ensure proper operation. The IN pin of the first signal isolator B1 is electrically connected to the first electric control valve XF1. The second PLC control unit A2 can adjust the opening and closing state of the first electric control valve XF1 by controlling the first signal isolator B1. The IN pin of the second signal isolator B2 is electrically connected to the second electric control valve XF2. The second PLC control unit A2 adjusts the opening and closing state of the second electric control valve XF2 by controlling the second signal isolator B2. The IN pin of the third signal isolator B3 is electrically connected to the electromagnetic flowmeter E. The electromagnetic flowmeter E operates based on Faraday's law of electromagnetic induction. When a conductive medium passes through a magnetic field, an induced voltage is generated, which is proportional to the speed of the medium. The second PLC control unit A2 obtains the flow data measured by the electromagnetic flowmeter E by controlling the third signal isolator B3. The IN pin of the fourth signal isolator B4 is electrically connected to the moisture analyzer W. The moisture analyzer W is used to measure the moisture content in tar, and its signal is transmitted to the second PLC control unit A2 through the fourth signal isolator B4. The second PLC control unit A2 adjusts the operating state of the system by controlling the first electric control valve XF1 and the second electric control valve XF2 based on the received signals (such as flow data and moisture content data) to achieve the expected process requirements.

[0034] Further, if Figure 8As shown, the third PLC control unit A3 is electrically connected to the IN pins of the fifth signal isolator B5 and the sixth signal isolator B6. This connection ensures that the PLC can receive input signals from both signal isolators. The POWER pins of the fifth and sixth signal isolators B5 and B6 are both electrically connected to the PLC power supply L, ensuring proper power supply and proper operation of the signal isolators. The OUT pin of the fifth signal isolator B5 is electrically connected to the first electric control valve XF1, while the OUT pin of the sixth signal isolator B6 is electrically connected to the second electric control valve XF2. The electric control valves use electric actuators to drive the valve core, thereby changing the valve opening and automatically adjusting parameters such as the flow rate and pressure of the fluid medium in the pipeline. The function of the signal isolator is to isolate, filter, amplify, convert, and distribute the input signal before outputting it to other instruments or systems, thereby improving the signal's resistance to electromagnetic interference and protecting equipment from damage caused by high voltage or high current. The third PLC control unit A3 receives and processes signals from the field through the fifth signal isolator B5 and the sixth signal isolator B6, and then transmits the processed signals to the first electric regulating valve XF1 and the second electric regulating valve XF2 through the signal isolators. These two electric regulating valves automatically adjust the flow and pressure of the fluid medium according to the received signals, thereby achieving precise control of the fluid medium in the tar water content online analyzer.

[0035] The above only describes in detail the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by ordinary technicians in this field, various changes can be made without departing from the purpose of the present invention, and various changes should be included in the scope of protection of the present invention.

Claims

1. A tar online water content analysis and control electrical system, characterized by: The invention comprises a user power supply system (YH), ​​an isolating switch (Q1), a first circuit breaker (F1), a second circuit breaker (F2), a third circuit breaker (F3), a fourth circuit breaker (F4), a fifth circuit breaker (F5), a first three-phase AC contactor (KM1), a second three-phase AC contactor (KM2), a first overheating load relay (FR1), a second overheating load relay (FR2), a first pump (P1), a second pump (P2), a first electric regulating valve (XF1), and a second electric regulating valve (XF2). The user power supply system (YH) is electrically connected to the isolating switch (Q1), and the isolating switch (Q1) is electrically connected to the first circuit breaker (F1), the second circuit breaker (F2), and the third circuit breaker (F3), respectively. The first circuit breaker (F1) is electrically connected to the normally open contact of the first three-phase AC contactor (KM1). point, the normally open contact of the first three-phase AC contactor (KM1) is electrically connected to the coil of the first overheat load relay (FR1), the coil of the first overheat load relay (FR1) is electrically connected to the first pump (P1), the coil of the first overheat load relay (FR1) is electrically connected to the first electric control valve (XF1) through the fourth circuit breaker (F4), the second circuit breaker (F2) is electrically connected to the normally open contact of the second three-phase AC contactor (KM2), the normally open contact of the second three-phase AC contactor (KM2) is electrically connected to the coil of the second overheat load relay (FR2), the coil of the second overheat load relay (FR2) is electrically connected to the second pump (P2), and the coil of the second overheat load relay (FR2) is electrically connected to the second electric control valve (XF2) through the fifth circuit breaker (F5).

2. The tar online water content analysis and control electrical system according to claim 1, characterized in that: The isolating switch (Q1) is electrically connected to a sixth circuit breaker (F6) and a seventh circuit breaker (F7), respectively; the sixth circuit breaker (F6) is electrically connected to a programming power supply (XS1); the seventh circuit breaker (F7) is electrically connected to a guide rail power supply (V1); and the guide rail power supply (V1) is electrically connected to a PLC power supply (L), an intelligent Internet of Things touch screen (U1), and an industrial network switch (U2).

3. The electrical system for online water content analysis and control of tar according to claim 1, characterized in that: The isolating switch (Q1) is electrically connected to a first indicator light (H1), a normally open contact of a first intermediate relay (K1), and a normally open contact of a second intermediate relay (K2), respectively; the normally open contact of the first intermediate relay (K1) is electrically connected to a normally closed contact of a first overheating load relay (FR1), respectively; the normally closed contact of the first overheating load relay (FR1) is electrically connected to a coil of a first three-phase AC contactor (KM1) and a second indicator light (H2), respectively; the normally open contact of the second intermediate relay (K2) is electrically connected to a normally closed contact of a second overheating load relay (FR2), respectively; the normally closed contact of the second overheating load relay (FR2) is electrically connected to a coil of a second three-phase AC contactor (KM2) and a third indicator light (H3).

4. The electrical system for online water content analysis and control of tar according to claim 2, characterized in that: The PLC power supply (L) wire is connected to a PLC module, and the PLC module includes a first PLC control unit (A1), a second PLC control unit (A2) and a third PLC control unit (A3), and the first PLC control unit (A1) is provided with a communication bus plug (DP1).

5. The electrical system for online water content analysis and control of tar according to claim 4, characterized in that: The first PLC control unit (A1) is electrically connected to a discharge control box (CP1), the first PLC control unit (A1) is electrically connected to a third circuit breaker (F3), and the first PLC control unit (A1) is electrically connected to a coil of a first intermediate relay (K1), a coil of a second intermediate relay (K2), and a fourth indicator light (H4).

6. The electrical system for online water content analysis and control of tar according to claim 4, characterized in that: The invention also includes a first signal isolator (B1), a second signal isolator (B2), a third signal isolator (B3) and a fourth signal isolator (B4); the second PLC control unit (A2) is electrically connected to the OUT pins of the first signal isolator (B1), the second signal isolator (B2), the third signal isolator (B3) and the fourth signal isolator (B4), respectively; the POWER pins of the first signal isolator (B1), the second signal isolator (B2), the third signal isolator (B3) and the fourth signal isolator (B4) are electrically connected to a PLC power supply (L); the IN pin of the first signal isolator (B1) is electrically connected to a first electric regulating valve (XF1); the IN pin of the second signal isolator (B2) is electrically connected to a second electric regulating valve (XF2); the IN pin of the third signal isolator (B3) is electrically connected to an electromagnetic flowmeter (E); and the IN pin of the fourth signal isolator (B4) is electrically connected to a water content analyzer (W).

7. The electrical system for online water content analysis and control of tar according to claim 4, characterized in that: The invention also includes a fifth signal isolator (B5) and a sixth signal isolator (B6), wherein the third PLC control unit (A3) is electrically connected to the IN pins of the fifth signal isolator (B5) and the sixth signal isolator (B6), respectively; the POWER pins of the fifth signal isolator (B5) and the sixth signal isolator (B6) are both electrically connected to the PLC power supply (L); the OUT pin of the fifth signal isolator (B5) is electrically connected to the first electric regulating valve (XF1), and the OUT pin of the sixth signal isolator (B6) is electrically connected to the second electric regulating valve (XF2).

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