Heating furnace liquid leakage monitoring device

Abstract

The utility model discloses a heating furnace liquid leakage monitoring device which comprises a power supply module, a control module, a signal output module and a sensor group module, the control module, the signal output module and the sensor group module are connected with the power supply module, and the signal output module and the sensor group module are connected with the control module. The sensor group module comprises a liquid sensor, a liquid collecting box sensor and a water flow sensor, the control module comprises a comparison chip U3 and a logic chip U2, the liquid sensor, the liquid collecting box sensor and the water flow sensor are respectively connected to the comparison chip U3, the comparison chip U3 is connected with the logic chip U2, and the logic chip U2 is connected to the signal output module; the heating furnace liquid leakage monitoring device is rich in detection means, high in sensitivity, fast in response, low in cost, compatible with different media, well compatible with other equipment and suitable for most heating furnaces with different functions.

Description

Technical Field

[0001] The utility model relates to the technical field of heating furnace liquid leakage monitoring, in particular to a heating furnace liquid leakage monitoring device. Background Art

[0002] Heating furnaces are common equipment in oil and gas gathering and transportation systems, used to heat, transport and heat crude oil, natural gas and their mixtures to meet processing technology requirements. As the equipment runs for a long time, containers, pipelines, pumps and valves will naturally age, increasing the risk of fuel and medium leakage, especially oily wastewater or flammable and explosive media, which poses a higher risk of safety accidents. In order to respond to possible leaks in a timely manner, it is necessary to design a device that continuously monitors whether the heating furnace is leaking. At present, many domestic products only use a single sensor to monitor leakage, which has the problems of medium inapplicability and slow response speed. Therefore, it is urgent to develop a new type of leakage monitoring device that integrates multiple detection methods, is applicable to multiple media, has high sensitivity, fast response and is compatible with other control systems. Utility Model Content

[0003] The utility model aims to provide a heating furnace leakage monitoring device to address the deficiencies of the prior art, so as to solve the problems that many domestic products currently use only a single sensor to monitor leakage, which results in medium inapplicability and slow response speed.

[0004] The utility model provides a heating furnace leakage monitoring device, comprising: a power module, a control module, a signal output module and a sensor group module, wherein the control module, the signal output module and the sensor group module are connected to the power module, and the signal output module and the sensor group module are connected to the control module;

[0005] The sensor group module includes a liquid sensor, a liquid collection box sensor and a water flow sensor, and the control module includes a comparison chip U3 and a logic chip U2. The liquid sensor, the liquid collection box sensor and the water flow sensor are respectively connected to the comparison chip U3, the comparison chip U3 is connected to the logic chip U2, and the logic chip U2 is connected to the signal output module.

[0006] Furthermore, the power module includes a fuse F1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, an anti-reverse diode D1 and a power chip U1; the capacitor C1, the capacitor C2, the capacitor C3, and the capacitor C4 are respectively connected to the power chip U1, the anti-reverse diode D1 is connected to one end of the capacitor C1, and the fuse F1 is connected to the anti-reverse diode D1.

[0007] Furthermore, the signal output module includes a relay K1, a diode D2, a transistor Q1, a resistor R1 and a resistor R2; the diode D2 is connected to the transistor Q1, the relay K1 is connected to the diode D2 in parallel, both ends of the resistor R2 are respectively connected to the transistor Q1, and one end of the resistor R1 is connected between the resistor R2 and the transistor Q1.

[0008] Furthermore, the control module also includes resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, resistor R9, resistor R10, resistor R11, resistor R12, resistor R13, resistor R14, switch S1, capacitor C5, and capacitor C6; capacitor C5 is connected to the comparison chip U3, capacitor C6 is connected to the logic chip U2, resistor R9, resistor R10, and resistor R11 are respectively connected between the comparison chip U3 and the logic chip U2, resistor R3, resistor R5, resistor R7, and resistor R13 are respectively connected to the comparison chip U3; resistor R4 is connected to resistor R3, resistor R6 is connected to resistor R5, resistor R8 is connected to resistor R7, and resistor R14 is connected to resistor R13; switch S1 is connected between resistor R13 and resistor R14; resistor R12 is connected to the logic chip U2.

[0009] Furthermore, the liquid sensor is connected between resistor R5 and resistor R6, the liquid collection box sensor is connected between resistor R7 and resistor R8, the water flow sensor is connected between resistor R3 and resistor R4; the signal output module is connected between logic chip U2 and resistor R12.

[0010] The utility model has the following beneficial effects: the utility model provides a heating furnace leakage monitoring device with rich detection means, high sensitivity, fast response, low cost, compatibility with different media, and good compatibility with other equipment, and is suitable for most heating furnaces with different functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is the overall block diagram of the heating furnace leakage monitoring device of the utility model;

[0013] Figure 2 It is the circuit diagram of the power module;

[0014] Figure 3 This is the circuit diagram of the signal output module;

[0015] Figure 4 It is the circuit diagram of the control module;

[0016] Figure 5 This is the sensor group module circuit diagram. DETAILED DESCRIPTION

[0017] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the following detailed descriptions are all 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 of ordinary skill in the art to which the present application belongs.

[0018] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0019] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for clarity, the thickness of the layers and regions is enlarged, and the same reference numerals are used to represent the same devices, so their description will be omitted.

[0020] See also Figures 1 to 5 An embodiment of the utility model provides a heating furnace leakage monitoring device, including: a power supply module, a control module, a signal output module and a sensor group module. The control module, the signal output module, the sensor group module are connected to the power supply module, the signal output module and the sensor group module are connected to the control module, and the power supply module supplies power to other modules.

[0021] Specifically, the power module includes a fuse F1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, an anti-reverse diode D1 and a power chip U1; the capacitors C1, C2, C3 and C4 are respectively connected to the power chip U1, the anti-reverse diode D1 is connected to one end of the capacitor C1, and the fuse F1 is connected to the anti-reverse diode D1. The power chip U1 can be selected as the model: LM317. The function of this module is to convert the input voltage DC24V into DC5V and output it to other modules and lower-level circuits.

[0022] Specifically, the signal output module includes a relay K1, a diode D2, a transistor Q1, a resistor R1 and a resistor R2; the diode D2 is connected to the transistor Q1, the relay K1 is connected in parallel with the diode D2, the two ends of the resistor R2 are respectively connected to the transistor Q1, and one end of the resistor R1 is connected between the resistor R2 and the transistor Q1. The function of this module is to convert the DC5V signal output by the logic chip of the control module into a DC24V signal output for reading by other control systems.

[0023] Specifically, the control module includes a comparison chip U3, a logic chip U2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a switch S1, a capacitor C5, and a capacitor C6; the capacitor C5 is connected to the comparison chip U3, the capacitor C6 is connected to the logic chip U2, the resistor R9, the resistor R10, and the resistor R11 are respectively connected between the comparison chip U3 and the logic chip U2, the resistor R3, the resistor R5, the resistor R7, and the resistor R13 are respectively connected to the comparison chip U3; the resistor R4 is connected to the resistor R3, the resistor R6 is connected to the resistor R5, the resistor R8 is connected to the resistor R7, and the resistor R14 is connected to the resistor R13; the switch S1 is connected between the resistor R13 and the resistor R14; the resistor R12 is connected to the logic chip U2. The signal output module is connected between the logic chip U2 and the resistor R12. The module is used for signal input detection, signal output control and logic judgment. The optional model of the comparison chip U2 is LM339; the optional model of the logic chip U3 is CD74HC4075. The switch S1 is used to realize the self-test function of the device, so as to verify the functional integrity of the device. The comparison chip U2 receives the signal sent by the sensor group, and outputs the signal to the logic chip U3 after comparing it with the reference voltage; the logic chip U3 receives the signal from the comparison chip U2 and outputs the effective leakage signal to the signal output module.

[0024] Specifically, the sensor group module includes a liquid sensor, a liquid collection box sensor and a water flow sensor. The liquid sensor is connected between resistor R5 and resistor R6, the liquid collection box sensor is connected between resistor R7 and resistor R8, and the water flow sensor is connected between resistor R3 and resistor R4. The function of the sensor group module is to monitor whether the heating furnace fire tube is leaking, and send the signal to the control module through the sensor. Among them, the water flow sensor can detect the light signal triggered by the flow of some low-transmittance liquids, and convert it into an electrical signal output; the liquid sensor can judge the low-resistivity liquid, and output an electrical signal when the liquid contacts the sensor; the liquid collection box sensor will collect the dripping liquid, and when the liquid volume reaches the threshold, it will trigger the gravity sensor to output an electrical signal. When any of the above three detection methods is triggered, the control module will receive the signal and output an indication signal of the heating furnace leakage.

[0025] It can be seen from the above embodiments that a heating furnace leakage monitoring device provided by the embodiment of the utility model includes: a power module, a control module, a signal output module and a sensor group module, the control module, the signal output module, the sensor group module are connected to the power module, and the signal output module and the sensor group module are connected to the control module; the sensor group module includes a liquid sensor, a liquid collecting box sensor and a water flow sensor, the control module includes a comparison chip U3 and a logic chip U2, the liquid sensor, the liquid collecting box sensor and the water flow sensor are respectively connected to the comparison chip U3, the comparison chip U3 is connected to the logic chip U2, and the logic chip U2 is connected to the signal output module; the heating furnace leakage monitoring device has rich detection means, high sensitivity, fast response, low cost, is compatible with different media, and is well compatible with other equipment, and is suitable for most heating furnaces with different functions.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0028] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heating furnace leakage monitoring device, characterized in that: include: A power module, a control module, a signal output module and a sensor group module, wherein the control module, the signal output module and the sensor group module are connected to the power module, and the signal output module and the sensor group module are connected to the control module; The sensor group module includes a liquid sensor, a liquid collection box sensor and a water flow sensor, and the control module includes a comparison chip U3 and a logic chip U2. The liquid sensor, the liquid collection box sensor and the water flow sensor are respectively connected to the comparison chip U3, the comparison chip U3 is connected to the logic chip U2, and the logic chip U2 is connected to the signal output module.

2. A heating furnace leakage monitoring device as claimed in claim 1, characterized in that: The power module includes a fuse F1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, an anti-reverse diode D1 and a power chip U1; the capacitor C1, the capacitor C2, the capacitor C3, and the capacitor C4 are respectively connected to the power chip U1, the anti-reverse diode D1 is connected to one end of the capacitor C1, and the fuse F1 is connected to the anti-reverse diode D1.

3. A heating furnace leakage monitoring device as claimed in claim 2, characterized in that: The signal output module includes a relay K1, a diode D2, a transistor Q1, a resistor R1 and a resistor R2; the diode D2 is connected to the transistor Q1, the relay K1 is connected to the diode D2 in parallel, both ends of the resistor R2 are respectively connected to the transistor Q1, and one end of the resistor R1 is connected between the resistor R2 and the transistor Q1.

4. A heating furnace leakage monitoring device as claimed in claim 3, characterized in that: The control module also includes resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, resistor R9, resistor R10, resistor R11, resistor R12, resistor R13, resistor R14, switch S1, capacitor C5, and capacitor C6; capacitor C5 is connected to the comparison chip U3, capacitor C6 is connected to the logic chip U2, resistor R9, resistor R10, and resistor R11 are respectively connected between the comparison chip U3 and the logic chip U2, resistor R3, resistor R5, resistor R7, and resistor R13 are respectively connected to the comparison chip U3; resistor R4 is connected to resistor R3, resistor R6 is connected to resistor R5, resistor R8 is connected to resistor R7, and resistor R14 is connected to resistor R13; switch S1 is connected between resistor R13 and resistor R14; resistor R12 is connected to the logic chip U2.

5. A heating furnace leakage monitoring device as claimed in claim 4, characterized in that: The liquid sensor is connected between resistor R5 and resistor R6, the liquid collection box sensor is connected between resistor R7 and resistor R8, and the water flow sensor is connected between resistor R3 and resistor R4; the signal output module is connected between logic chip U2 and resistor R12.

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