Novel flame detection system and combustion device of closed container

Abstract

The utility model relates to the field of combustion detection, in particular to a novel flame detection system and a combustion device of a closed container, which comprise a plurality of detection terminals and a control terminal, and the detection terminals correspond to combustors to be detected; the detection terminal comprises a flame detection sensor and a temperature sensor; the sensing end of the temperature sensor is located in the combustion area of the corresponding combustor to be detected. The control terminal is electrically connected with the temperature sensor and the flame detection sensor, and is electrically connected with the to-be-detected burner; the control terminal comprises a temperature change detector; the temperature change detector comprises a temperature difference sensor and a threshold comparator; and the temperature change detectors are electrically connected with the corresponding detection terminals. According to the utility model, the temperature change of the combustion area is detected, and the interference of other adjacent combustors can be eliminated, so that the combustion detection accuracy of the to-be-detected combustor is greatly improved, the false alarm is avoided, and the operation safety and stability of the system are improved.

Description

Technical Field

[0001] The utility model relates to the field of combustion detection, in particular to a novel fire detection system and a combustion device for a closed container. Background Art

[0002] The fire detection system is a burner supporting facility. It can be used to interlock and cut off the imported fuel after the flame is extinguished to prevent the fuel from continuing to enter the container and causing unnecessary accidents after reaching the explosion limit. In some large combustion containers, there will be multiple burners working at the same time. When one burner is working, the fire detection of the other burners will also detect the flame, or when the load fluctuates, black smoke may be generated for a short time to block the fire detection signal, causing a false alarm and shutdown. The above problems can be collectively referred to as fire detection conflict problems.

[0003] Therefore, how to avoid false alarms of fire detection in the burner and improve the operating stability and safety of the burner is an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0004] The utility model aims to provide a novel fire detection system and a combustion device for a closed container, so as to solve the problem in the prior art that the burner fire detection has serious false alarms, thus reducing the safety and stability of the burner operation.

[0005] In order to solve the above technical problems, the utility model provides a novel fire detection system, including a plurality of detection terminals and a control terminal, wherein the detection terminals correspond to the burners to be detected;

[0006] The detection terminal includes a fire detection sensor and a temperature sensor;

[0007] The sensing end of the temperature sensor is located in the combustion area of ​​the corresponding burner to be tested;

[0008] The control terminal is electrically connected to the temperature sensor and the fire detection sensor, and is also electrically connected to the burner to be detected;

[0009] The control terminal includes a temperature change detector;

[0010] The temperature change detector includes a temperature difference sensor and a threshold comparator;

[0011] The temperature change detector is electrically connected to the corresponding detection terminal.

[0012] Optionally, in the novel fire detection system, the temperature sensor is a thermocouple.

[0013] Optionally, in the novel fire detection system, the thermocouple is an armored thermocouple.

[0014] Optionally, in the novel fire detection system, a protective sleeve is also included;

[0015] The protection sleeve is sleeved on the outer side of the thermocouple.

[0016] Optionally, in the novel fire detection system, the thermocouple is a K-type thermocouple.

[0017] Optionally, in the novel fire detection system, the control terminal is a distributed control terminal.

[0018] Optionally, in the novel fire detection system, the fire detection sensor is a visible light sensor.

[0019] Optionally, in the novel fire detection system, the fire detection sensor is installed tilted toward the corresponding burner to be detected.

[0020] Optionally, in the novel fire detection system, the fire detection sensor is installed at an angle of 45 degrees.

[0021] A combustion device for a closed container, comprising any of the novel fire detection systems described above and a plurality of burners;

[0022] The burner corresponds to the detection terminal in the novel fire detection system.

[0023] The novel fire detection system provided by the utility model comprises a plurality of detection terminals and a control terminal, wherein the detection terminal corresponds to the burner to be detected; the detection terminal comprises a fire detection sensor and a temperature sensor; the sensing end of the temperature sensor is located in the combustion area of ​​the corresponding burner to be detected; the control terminal is electrically connected to the temperature sensor and the fire detection sensor, and is also electrically connected to the burner to be detected; the control terminal comprises a temperature change detector; the temperature change detector comprises a temperature difference sensor and a threshold comparator; the temperature change detector is electrically connected to the corresponding detection terminal.

[0024] The utility model realizes secondary detection of whether the burner to be inspected is burning in addition to the fire detection sensor by adding a temperature sensor and a corresponding temperature change detector to the new fire detection system. Compared with using the fire detection sensor alone to detect whether the corresponding burner is burning, the detection of the temperature change in the combustion area is added, which can eliminate the interference of other adjacent burners, thereby greatly improving the accuracy of the combustion detection of the burner to be inspected, avoiding false alarms, and improving the operating safety and stability of the system. The utility model also provides a combustion device for a closed container with the above beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings required for use in the embodiments or the description of the prior art 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.

[0026] Figure 1 A structural schematic diagram of a specific implementation of a novel fire detection system provided by the utility model;

[0027] Figure 2 A partial structural schematic diagram of a specific implementation manner of the novel fire detection system provided by the utility model.

[0028] In the figure, it includes 01-burner to be inspected, 11-temperature sensor, 12-fire detection sensor, 21-temperature difference sensor, and 22-threshold comparator. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0030] The core of the utility model is to provide a new type of fire detection system, and a structural schematic diagram of a specific implementation method is shown in FIG. Figure 1 As shown, it is called specific implementation mode 1, including multiple detection terminals and control terminals, and the detection terminal corresponds to the burner 01 to be detected;

[0031] The detection terminal includes a fire detection sensor 12 and a temperature sensor 11;

[0032] The sensing end of the temperature sensor 11 is located in the combustion area of ​​the corresponding burner 01 to be inspected;

[0033] The control terminal is electrically connected to the temperature sensor 11 and the fire detection sensor 12, and is also electrically connected to the burner 01 to be detected;

[0034] The control terminal includes a temperature change detector;

[0035] The temperature change detector includes a temperature difference sensor 21 and a threshold comparator 22;

[0036] The temperature change detector is electrically connected to the corresponding detection terminal.

[0037] The temperature change sensor is a sensor for obtaining temperature change rate information, including the temperature difference sensor 21 and the threshold comparator 22. Figure 2 , Figure 2 The connection mode of the temperature difference sensor 21 and the threshold comparator 22 is shown in the figure. The two input ends of the temperature difference sensor 21 respectively input two temperature parameters obtained by the temperature sensor 11 at fixed intervals. The temperature difference sensor 21 makes a difference between the two temperature parameters to obtain a temperature difference at fixed intervals. The output end of the temperature difference sensor 21 transmits the temperature difference to the input end of the threshold comparator 22. The temperature difference is compared with a preset temperature difference threshold value via the threshold comparator 22. If the temperature difference is greater than the temperature difference threshold value, it means that the corresponding burner 01 to be inspected has ignited the flame or extinguished the flame. For example, Figure 2 Where T1 is the temperature value of the temperature sensor 11 10 seconds ago, T2 is the real-time temperature value of the temperature sensor 11, T3=T1-T2, and in the threshold comparator 22, T3 is compared with the preset threshold value 50°C. If T3 is greater than 50°C, it is judged that the flame is extinguished, and Q1 is the flame judgment signal.

[0038] Specifically, the temperature sensor 11 is a thermocouple, which has high precision, wide application range and low cost. Of course, other types of temperature sensors 11 can also be used, and the present invention will not elaborate on them one by one.

[0039] Furthermore, the thermocouple is an armored thermocouple, which has a wide temperature measurement range, relatively stable performance, simple structure, good dynamic response, and can transmit 4mA to 20mA electrical signals remotely, facilitating automatic control and centralized control.

[0040] Furthermore, the thermocouple is a K-type thermocouple. The K-type thermocouple has good linearity, large thermoelectric potential, high sensitivity, good stability and uniformity, strong anti-oxidation performance, and low price. Of course, different types of thermocouples can also be selected according to actual conditions, and the selection can be made according to actual conditions, and the utility model is not limited here.

[0041] Also, it includes a protective sleeve;

[0042] The protection sleeve is sleeved on the outer side of the thermocouple.

[0043] After the protective tube sleeve is installed, the ability of the thermocouple to resist accidental ignition and external force impact is greatly improved, thereby improving the operational stability of the system.

[0044] As a preferred embodiment, the control terminal is a distributed control terminal. The distributed control terminal is used to run a distributed control system (DCS), has good system stability, and is more suitable for controlling multiple detection terminals at the same time. The control terminal performs subsequent interlocking control after calculation, has stronger versatility and better working stability.

[0045] In addition, the fire detection sensor 12 is a visible light sensor. The visible light sensor is a means of directly and quickly determining whether there is a flame, with fast response speed, high accuracy and good stability. Of course, other types of fire detection sensors 12 can also be used, and the utility model is not limited here.

[0046] As a preferred embodiment, the fire detection sensor 12 is installed obliquely toward the corresponding burner to be inspected 01. In this preferred embodiment, instead of the vertical installation of the traditional fire detection sensor 12, an oblique installation toward the burner to be inspected 01 is adopted, so that only the corresponding burner to be inspected 01 is in the monitoring field of the visible light sensor, avoiding interference from flames generated by other burners, and further reducing the possibility of false alarms.

[0047] Furthermore, the fire detection sensor 12 is installed at a 45 degree tilt, which is the best angle after a lot of theoretical calculations and actual tests, and is convenient for installation and can achieve a good flame monitoring effect. Of course, other angles can also be selected according to actual conditions, and the present invention is not limited here.

[0048] The new fire detection system provided by the utility model includes multiple detection terminals and control terminals. The detection terminal corresponds to the burner 01 to be detected; the detection terminal includes a fire detection sensor 12 and a temperature sensor 11; the sensing end of the temperature sensor 11 is located in the combustion area of ​​the corresponding burner 01 to be detected; the control terminal is electrically connected to the temperature sensor 11 and the fire detection sensor 12, and is electrically connected to the burner 01 to be detected; the control terminal includes a temperature change detector; the temperature change detector includes a temperature difference sensor 21 and a threshold comparator 22; the temperature change detector is electrically connected to the corresponding detection terminal. The utility model realizes a secondary detection of whether the burner 01 to be detected is burning in addition to the fire detection sensor 12 by adding a temperature sensor 11 and a corresponding temperature change detector to the new fire detection system. Compared with using the fire detection sensor 12 alone to detect whether the corresponding burner is burning, the detection of the temperature change in the combustion area is added, which can eliminate the interference of other adjacent burners, thereby greatly improving the accuracy of the combustion detection of the burner 01 to be detected, avoiding false alarms, and improving the operating safety and stability of the system.

[0049] The utility model also provides a combustion device for a closed container, a specific embodiment of which is referred to as specific embodiment 2, comprising a novel fire detection system as described in any one of the above and a plurality of burners;

[0050] The burner corresponds to the detection terminal in the novel fire detection system.

[0051] The relevant technical details of the above-mentioned novel fire detection system can be referred to in the previous text and will not be repeated here. The burner in this specific embodiment is also the burner to be inspected 01 in the previous text.

[0052] The new fire detection system provided by the utility model includes multiple detection terminals and control terminals. The detection terminal corresponds to the burner 01 to be detected; the detection terminal includes a fire detection sensor 12 and a temperature sensor 11; the sensing end of the temperature sensor 11 is located in the combustion area of ​​the corresponding burner 01 to be detected; the control terminal is electrically connected to the temperature sensor 11 and the fire detection sensor 12, and is electrically connected to the burner 01 to be detected; the control terminal includes a temperature change detector; the temperature change detector includes a temperature difference sensor 21 and a threshold comparator 22; the temperature change detector is electrically connected to the corresponding detection terminal. The utility model realizes a secondary detection of whether the burner 01 to be detected is burning in addition to the fire detection sensor 12 by adding a temperature sensor 11 and a corresponding temperature change detector to the new fire detection system. Compared with using the fire detection sensor 12 alone to detect whether the corresponding burner is burning, the detection of the temperature change in the combustion area is added, which can eliminate the interference of other adjacent burners, thereby greatly improving the accuracy of the combustion detection of the burner 01 to be detected, avoiding false alarms, and improving the operating safety and stability of the system.

[0053] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0054] It should be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0055] The above is a detailed introduction to the novel fire detection system and the combustion device of the sealed container provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A new type of fire detection system, characterized in that: It includes a plurality of detection terminals and a control terminal, wherein the detection terminal corresponds to the burner to be detected; The detection terminal includes a fire detection sensor and a temperature sensor; The sensing end of the temperature sensor is located in the combustion area of ​​the corresponding burner to be tested; The control terminal is electrically connected to the temperature sensor and the fire detection sensor, and is also electrically connected to the burner to be detected; The control terminal includes a temperature change detector; The temperature change detector includes a temperature difference sensor and a threshold comparator; The temperature change detector is electrically connected to the corresponding detection terminal.

2. The novel fire detection system according to claim 1, characterized in that: The temperature sensor is a thermocouple.

3. The novel fire detection system as claimed in claim 2, characterized in that: The thermocouple is an armored thermocouple.

4. The novel fire detection system as claimed in claim 2, characterized in that: Also included is a protective sleeve; The protection sleeve is sleeved on the outer side of the thermocouple.

5. The novel fire detection system as claimed in claim 2, characterized in that: The thermocouple is a K-type thermocouple.

6. The novel fire detection system as claimed in claim 1, characterized in that: The control terminal is a distributed control terminal.

7. The novel fire detection system as claimed in claim 1, characterized in that: The fire detection sensor is a visible light sensor.

8. The novel fire detection system according to claim 7, characterized in that: The fire detection sensor is installed obliquely toward the corresponding burner to be detected.

9. The novel fire detection system as claimed in claim 1, characterized in that: The fire detection sensor is installed at an angle of 45 degrees.

10. A combustion device for a closed container, characterized in that: A novel fire detection system as claimed in any one of claims 1 to 9 and a plurality of burners; The burner corresponds to the detection terminal in the novel fire detection system.

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