Air supply pipeline and system of integrated control circuit

Abstract

The utility model discloses an air supply pipeline and system of an integrated control circuit, which comprises a plurality of air paths connected in parallel, and the plurality of air paths connected in parallel are all communicated with an air blower; the air blower is connected with the motor, a valve, a temperature sensor and a flow sensor are arranged in each air channel, heaters are arranged in all the other air channels except one air channel, and the motor, the valves, the temperature sensors, the flow sensors and the heaters are all connected with the power supply circuit. And the conveying of gases with different flows and different temperatures can be realized, and the use requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of air supply, in particular to an air supply pipeline and system with an integrated control circuit. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] In various processing, production and experimental processes, gases such as air, nitrogen or hydrogen are often required. The current gas pipeline can only realize the transportation of gas at one temperature or one flow rate, and does not meet the use requirements of gases with different flow rates and temperatures. In addition, the current gas pipeline cannot achieve effective circuit protection during control, nor can it achieve remote control. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a gas delivery pipeline and system with an integrated control circuit, which can realize the delivery of gases with different flow rates and temperatures and meet the use requirements.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] On the first aspect, an air supply pipeline with an integrated control circuit is proposed, including multiple parallel air paths, and the multiple parallel air paths are all connected to the blower; the blower is connected to the motor, and valves, temperature sensors and flow sensors are arranged in each air path, and heaters are arranged in all air paths except one air path, and the motor, valve, temperature sensor, flow sensor and heater are all connected to the power supply circuit.

[0007] Furthermore, two temperature sensors are arranged in each gas path, and the two temperature sensors are spaced apart by a set distance.

[0008] Furthermore, two temperature sensors are provided in the gas path of the heater, wherein one temperature sensor is located before the heater and the other temperature sensor is located after the heater.

[0009] Furthermore, the valve in each gas circuit is arranged in front of the flow sensor and the temperature sensor in the corresponding gas circuit.

[0010] Furthermore, the power supply circuit includes a power supply, a safety relay, a transformer and a rectifier; the power supply, the safety relay, the transformer and the rectifier are connected in series.

[0011] Furthermore, a protective resistor and a differential switch are connected in series in the power supply circuit.

[0012] Furthermore, a thyristor is connected in series between the power supply circuit and each heater.

[0013] Furthermore, a frequency regulator and a circuit breaker are connected in series between the power supply circuit and the motor.

[0014] Furthermore, the motor, valve, temperature sensor, flow sensor, heater and frequency regulator are all communicatively connected to the control terminal.

[0015] In a second aspect, a gas supply system of an integrated control circuit is proposed, comprising a remote control terminal, wherein the remote control terminal is communicatively connected to a gas supply pipeline of an integrated control circuit proposed in the first aspect.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model is provided with a plurality of parallel gas circuits, and the plurality of parallel gas circuits are all connected with the blower, so that the plurality of gas circuits can be ventilated by one blower, a valve is provided in each gas circuit, and the valve opening is adjusted to realize the delivery of gases with different flow rates, and heaters are provided in all gas circuits except one gas circuit, and the gas in the gas circuit is heated by the heater, so that the delivery of gases with different temperatures can be realized by regulating the heating temperature of the heater, and finally the use requirements of gases with different flow rates and different temperatures can be met.

[0018] 2. The utility model provides a flow sensor and a temperature sensor in each gas path to monitor the flow rate and temperature of the gas in the gas path respectively.

[0019] 3. The utility model sets a flow sensor at each end of the gas path to measure the gas temperature at the front end and the end of the gas path.

[0020] 4. The utility model sets a safety relay, a protective resistor and a differential switch in the power supply circuit for circuit protection, and sets a transformer and a rectifier to rectify and transform the current so that the current output by the power supply circuit meets the use of electrical components.

[0021] 5. The utility model connects a frequency regulator between the motor and the power supply circuit, thereby realizing the regulation of the motor speed.

[0022] 6. The air supply pipeline disclosed in the utility model is connected to a remote control terminal, and the air supply pipeline can be controlled by the remote control terminal.

[0023] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0025] Figure 1 Circuit wiring diagram for protection device, transformer and rectifier;

[0026] Figure 2 It is the circuit wiring diagram of the safety relay and indicator light;

[0027] Figure 3 Circuit wiring diagrams for thyristors, electric heaters, frequency converters and motors;

[0028] Figure 4 A circuit wiring diagram of the overall I / O module and the control terminal disclosed in the embodiment;

[0029] Figure 5 A circuit wiring diagram of a thermocouple and an I / O module disclosed in an embodiment;

[0030] Figure 6 A circuit wiring diagram of a frequency modulator input and an I / O module disclosed in an embodiment;

[0031] Figure 7 A circuit wiring diagram of a frequency modulator output and an I / O module disclosed in an embodiment;

[0032] Figure 8 A circuit wiring diagram of a thyristor and an I / O module disclosed in an embodiment;

[0033] Fig. 9 A circuit wiring diagram of an intermediate relay and an I / O module disclosed in an embodiment;

[0034] Fig.10 A circuit wiring diagram of a flow sensor and an I / O module disclosed in an embodiment;

[0035] Fig.11 A circuit wiring diagram of an electric control valve and an I / O module disclosed in an embodiment;

[0036] Fig.12 The circuit state after reset disclosed in the embodiment;

[0037] Fig.13 This is the circuit status after the emergency stop disclosed in the embodiment.

[0038] Note: The wiring terminal "3-A1" in the circuit diagram indicates that the terminal is connected to Figure 3 The terminal in row A and column 1 of FIG. 1 is identified by the text in the border of the attached figure. DETAILED DESCRIPTION

[0039] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0040] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0041] Example 1

[0042] In this embodiment, a gas delivery pipeline with an integrated control circuit is disclosed, such as Figure 1-Figure 13 As shown, it includes multiple parallel air circuits, and the multiple parallel air circuits are all connected to the blower; the blower is connected to the motor, and a valve, a temperature sensor and a flow sensor are arranged in each air circuit. Heaters are arranged in all air circuits except one air circuit, and the motor, valve, temperature sensor, flow sensor and heater are all connected to the power supply circuit.

[0043] This embodiment sets up multiple parallel gas circuits connected to the blower, so that gas can be supplied to multiple gas circuits through one blower. A valve is set in each gas circuit, and the gas flow in the gas circuit is regulated by adjusting the valve opening. Heaters are set in all gas circuits except one gas circuit, and the gas in the gas circuit can be heated by the heater. The heating temperature of the heater is adjusted to achieve the regulation of the gas temperature in the gas circuit, and finally the transportation of gases with different flow rates and different temperatures is achieved to meet the use requirements of gases with different flow rates and different temperatures.

[0044] In order to detect the temperature of the gas at both ends of the gas path, in this embodiment, two temperature sensors are arranged in each gas path, and the two temperature sensors are spaced apart by a set distance.

[0045] Preferably, two temperature sensors are arranged at both ends of the gas path.

[0046] For two temperature sensors in a gas path with a heater, one of the temperature sensors is located before the heater and the other temperature sensor is located after the heater, so as to measure the temperature of the gas before and after heating, respectively, and determine the change in gas temperature before and after heating.

[0047] In addition, this embodiment specifies that the valve in each gas circuit is arranged in front of the flow sensor and the temperature sensor in the corresponding gas circuit.

[0048] The electrical components of the present embodiment, such as the motor, valve, temperature sensor, flow sensor and heater, are all connected to the power supply circuit, and power is supplied to each electrical component through the power supply circuit.

[0049] The power supply circuit includes a power supply, a safety relay, a transformer and a rectifier; the power supply, the safety relay, the transformer and the rectifier are connected in series, wherein the safety relay is used to control the start and stop of the power supply circuit, and the transformer and the rectifier are used to transform and rectify the electricity output by the power supply, and supply the transformed and rectified electricity to various electrical components.

[0050] This embodiment also connects a protective resistor and a differential switch in series in the power supply circuit, and performs short-circuit protection on the power supply circuit through the protective resistor. When the currents of the three circuits are different due to human contact or power loss of components, the entire power supply circuit is powered off.

[0051] The circuits in which the motor, valve, temperature sensor, flow sensor and heater are connected to the power supply circuit in this embodiment are connected in parallel, so as to facilitate the individual control of the motor, valve, temperature sensor, flow sensor and heater.

[0052] In addition, in this embodiment, a frequency regulator and a circuit breaker are connected in series between the power supply circuit and the motor. The motor speed is adjusted by the frequency regulator, and the power supply circuit is protected from overload by the circuit breaker. An intermediate relay K1 is also connected in series between the power supply circuit and the motor. The intermediate relay K1 is used to control the start of the motor.

[0053] In this embodiment, a thyristor is connected in series between the power supply circuit and each heater to control the power of the heater. In addition, an intermediate relay is connected in series between the power supply circuit and each heater to control the start-up of the heater.

[0054] Preferably, the valve is an electric control valve, and the temperature sensor is a thermocouple; the electric control valve group is arranged after the motor and before the first group of thermocouples, and is used to control the flow rate of each branch airflow.

[0055] Taking three parallel gas circuits as an example, the air supply pipeline of an integrated control circuit disclosed in this embodiment is described. The motor is connected to the blower to control the start and stop of the blower. For the three parallel gas circuits, valves, temperature sensors, flow sensors, heaters (one gas circuit does not have one) and temperature sensors are sequentially arranged on each gas circuit. The air supply pipeline of the integrated control circuit includes a power supply, a safety relay, six intermediate relays, two indicator lights, two thyristors, a frequency regulator, two heaters, a motor, an I / O module, three electric control valves, six thermocouples, three flow sensors, as well as circuit breakers, fuses, differential switches, transformers, and rectifiers.

[0056] like Figure 1-Figure 12As shown, the safety relay is G9SE-201; the six intermediate relays are K1, K2, K3, K4, K5 and K6, and the intermediate relays K1, K2, K3, K4, K5 and K6 have normally open contacts and normally closed contacts respectively; the two indicator lights are H1 and H2; the two thyristors are thyristor 1 and thyristor 2; the frequency regulator is 3G3HV inverter; the two heaters are R1 and R2; the motor is M1; the I / O modules include PM8AI / 1, PM8AO, PM8TC (ISO), PM16DO, PM8AI / V, PM8AO and PM8DIO, PM is the abbreviation of Promux module, which is an I / O module model, and the numbers and letters after PM indicate the connected components and the number of inputs / outputs, etc.; the circuit breakers are QF1 and QF2, the fuse is Q1, the differential switch is DF1, the transformer is T1, and the rectifier is R 3P TO DC.

[0057] like Figure 2 As shown, the safety relay in the power supply circuit is connected to the power supply, and the safety relay is set to manual reset, that is, the wiring of its feedback and reset input signals is set as follows Figure 2 The reset switch K4 shown in row F, column 5, and the normally closed contacts of the intermediate relays K1, K2, and K3 are set in the reset connection to limit the reset operation, such as Figure 2 F6 and Figure 2 In G6; Figure 3 As shown in row E, column 3 and row E, column 6, the normally open contacts of the intermediate relays K2 and K3 are respectively arranged in front of the two heaters to control the start of the heaters; Figure 3 Thyristor 1 and thyristor 2 shown in row F, column 3 and row F, column 6 are respectively arranged before the two heaters and after the intermediate relays K2 and K3 to control the power of the heaters; Figure 3 The normally open contact of the intermediate relay K1 shown in row C, column 10 is set in front of the motor M1 to control the start of the motor; the frequency regulator is set after the intermediate relay K1 in front of the motor to change the frequency of the voltage supply, such as Figure 3 The frequency converter shown in row E, column 15, integrates PID control and can set the motor speed very accurately. The S1 interface and SC interface of the frequency converter are connected in series. Figure 3 The intermediate relay K6 shown in the 12th column of row C is used to control the PID control of the frequency regulator, and the intermediate relay K6 is in a normally open state.

[0058] Only when pressing Figure 2 When the reset button of the safety relay shown in row E, column 6 is pressed, the safety output k2 of the safety relay will be closed and the system will start. If k2 is not closed, the system will not start.

[0059] like Fig. 9 and Figure 2 As shown, the intermediate relay K1 is connected to the safety output K2 of the safety relay, and the intermediate relays K2 and K3 are connected to the safety output K1 of the safety relay. Both inputs of the safety relay are in the open state, which is a necessary condition for the safety output to be turned on. Therefore, when the value of safety input 1 changes and an emergency stop occurs, the safety output K1 is turned on, causing the intermediate relay K1 to be de-energized. Since K2 and K3 are connected to K1, as shown in Figure 2 As shown in row C, column 12 and Fig. 9 As shown in row B, column 11, when K1 is powered off, Figure 3 In row F, column 3 and Figure 3 K2 and K3 shown in row F, column 6 are also powered off, resulting in Figure 3 In row G, column 3 and Figure 3 The two heaters R1 and R2 in row G and column 6 cannot operate.

[0060] If the power supply circuit is running, that is, K1, K2 and K3 are in the activated state, the safety outputs k1 and k2 will be closed, so that the intermediate relay K5 is in the activated state, such as Figure 2 As shown in row F, column 10. K5 controls the red light H1 and the green light H2. Figure 2 In row B, column 14 and Figure 2 As shown in row B, column 15. When K5 is powered off, the current flows through H1 and the red light is on; when K5 is activated, the current flows through H2 and the green light is on. Therefore, the color of the indicator light can be used to determine whether the power supply circuit is running.

[0061] Intermediate relay K4 controls the execution of the reset command. If the power supply circuit is not running, Figure 2 The normally closed contacts K1, K2, and K3 under the reset connection shown in row E, column 6 will remain closed. If reset is pressed and K4 is activated, the reset can continue. However, if the system is running, the normally closed contacts K1, K2, and K3 under the reset connection will be open. At this time, the circuit cannot be closed and the reset cannot be performed. Therefore, K1 must be de-energized first, then K2 and K3 are de-energized, so that the circuit is closed. K1 can be de-energized by emergency stop.

[0062] In some embodiments, the motor, valve, temperature sensor, flow sensor, heater and frequency regulator are all communicatively connected to the control terminal, the motor, valve, heater and frequency regulator are controlled by the control terminal, and the data obtained by the temperature sensor and flow sensor are received and displayed by the control terminal.

[0063] Optionally, the control terminal may be a computer.

[0064] The air supply pipeline of the integrated control circuit disclosed in the present embodiment is provided with a plurality of parallel air paths, and the plurality of parallel air paths are all connected to the blower, so that the plurality of air paths can be ventilated by one blower, a valve is provided in each air path, and the valve opening is adjusted to realize the delivery of gases with different flow rates, a heater is provided in all the air paths except one air path, and the gas in the air path is heated by the heater, so that the delivery of gases with different temperatures can be realized by regulating the heating temperature of the heater, and finally the use requirements of gases with different flow rates and different temperatures can be met; a flow sensor and a temperature sensor are provided in each air path to respectively monitor the flow rate and temperature of the gas in the air path; a flow sensor is provided at each end of the air path to realize the measurement of the gas temperature at the front end and the end of the air path; a safety relay, a protection resistor and a differential switch are provided in the power supply circuit for circuit protection, and the current is rectified and transformed by providing a transformer and a rectifier, so that the current output by the power supply circuit meets the use of the electrical components; a frequency modulator is connected between the motor and the power supply circuit to realize the regulation of the motor speed.

[0065] The air supply pipeline disclosed in this embodiment is also connected to a remote control terminal, and the air supply pipeline can be controlled by the remote control terminal.

[0066] Example 2

[0067] In this embodiment, an air supply system of an integrated control circuit is disclosed, including a remote control terminal, which is communicatively connected to an air supply pipeline of an integrated control circuit disclosed in Example 1.

[0068] Among them, a frequency modulator, valve, temperature sensor, thyristor and flow sensor of an air supply pipeline of an integrated control circuit are all connected to a remote control terminal through a communication module, and the air supply pipeline can be controlled through the remote control terminal.

[0069] Preferably, the communication module adopts an I / O module, and the remote control terminal can be a computer, a mobile phone, etc.

[0070] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0071] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. An air supply pipeline with an integrated control circuit, characterized in that: It includes multiple parallel gas circuits, which are all connected to the blower; the blower is connected to the motor, a valve, a temperature sensor and a flow sensor are arranged in each gas circuit, heaters are arranged in all gas circuits except one gas circuit, and the motor, valve, temperature sensor, flow sensor and heater are all connected to the power supply circuit.

2. The air supply pipeline of the integrated control circuit according to claim 1, characterized in that: Two temperature sensors are arranged in each gas path, and the two temperature sensors are spaced apart by a set distance.

3. The air supply pipeline of the integrated control circuit according to claim 2, characterized in that: Two temperature sensors are arranged in the gas path of the heater, one of which is located before the heater and the other is arranged after the heater.

4. The air supply pipeline of the integrated control circuit according to claim 1, characterized in that: The valve in each gas circuit is arranged in front of the flow sensor and the temperature sensor in the corresponding gas circuit.

5. The air supply pipeline of the integrated control circuit according to claim 1, characterized in that: The power supply circuit includes a power supply, a safety relay, a transformer and a rectifier; the power supply, the safety relay, the transformer and the rectifier are connected in series.

6. The air supply pipeline of the integrated control circuit according to claim 1, characterized in that: A protective resistor and a differential switch are connected in series in the power supply circuit.

7. The air supply pipeline of the integrated control circuit according to claim 1, characterized in that: A thyristor is connected in series between the power supply circuit and each heater.

8. The air supply pipeline of the integrated control circuit according to claim 1, characterized in that: A frequency converter and a circuit breaker are connected in series between the power supply circuit and the motor.

9. The air supply pipeline of the integrated control circuit according to claim 8, characterized in that: The motor, valve, temperature sensor, flow sensor, heater and frequency converter are all connected to the control terminal for communication.

10. An air supply system with an integrated control circuit, characterized in that: It comprises a remote control terminal, which is communicatively connected to an air supply pipeline of an integrated control circuit as described in any one of claims 1-9.

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