Flame arrestor monitoring device and monitoring method

Abstract

This invention relates to the field of flame arresters, and discloses a flame arrester monitoring device and method. The monitoring device includes: a detection unit for detecting a blockage signal from the flame arrester; a processing unit for storing a pre-established relationship model between the blockage signal and the degree of blockage, and using the relationship model to calculate the degree of blockage of the flame arrester based on the blockage signal detected by the detection unit; and a display unit for displaying a signal indicating the degree of blockage of the flame arrester. The technical solution provided by this invention can improve the accuracy of monitoring the degree of blockage of flame arresters and enhance the operational safety of flame arresters and gas pipelines.

Description

Technical Field

[0001] This invention relates to the field of flame arresters, and more specifically, to a flame arrester monitoring device and a flame arrester monitoring method. Background Technology

[0002] A flame arrester generally consists of a flame arrester housing and a flame arresting core housed within the housing, used to achieve flame arrest. The flame arresting core typically comprises a corrugated plate flame arresting disc of a certain thickness or packing material. Since flame arresting cores operate continuously in gas transmission environments, such as oil and gas environments, blockages inevitably occur, affecting the flow performance of the flame arrester and consequently impacting production and operation.

[0003] Meanwhile, since flame arresters are generally installed on pipelines, especially in petrochemical plants where large quantities of oil and gas (combustible gases) need to be transported, it is difficult to promptly disconnect them to check the degree of blockage. Currently, there are two main blockage detection techniques. One is to periodically remove the flame arrester for manual inspection. This is a reactive method, usually only carried out when the blockage is severe and affects normal operation. It requires disassembling the flame arrester and removing each flame arrestor core piece by piece to accurately assess the degree of blockage. This makes the operation cumbersome, labor-intensive, and inefficient, seriously affecting normal production operations.

[0004] Another method is to install pressure gauges before and after the flame arrester, observe the pressure difference between the two gauges, and infer the degree of blockage of the flame arrester based on its flow performance curve. However, this method requires technicians to have a certain understanding and experience with the flow performance curve of the flame arrester. In addition, the addition of a pressure tap also increases the leakage point and creates a weak point for explosion.

[0005] Therefore, a new technical solution is needed to address the difficulty in detecting, and especially in automatically monitoring, the degree of blockage in flame arresters. Summary of the Invention

[0006] The purpose of this invention is to overcome, at least to some extent, the above-mentioned problems existing in the prior art, and to provide a technical solution that can improve the monitoring accuracy of the blockage degree of the flame arrester and improve the operational safety of the flame arrester and the gas pipeline.

[0007] To achieve the above objectives, a first aspect of the present invention provides a flame arrester monitoring device, the monitoring device comprising:

[0008] The detection unit is used to detect the blockage signal of the flame arrester;

[0009] The processing unit is used to store a pre-established relationship model between blockage signals and blockage degree, and to use the relationship model to calculate the blockage degree of the flame arrester based on the blockage signal detected by the detection unit.

[0010] The display unit is used to display a signal indicating the degree of blockage of the flame arrester.

[0011] Preferably, the detection unit is configured to detect at least one of the following: a change signal in the airflow pressure area caused by the blockage of the flame arrester, a change signal in weight, a change signal in light, a change signal in sound, and a change signal in impurity thickness, in order to obtain the blockage signal of the flame arrester.

[0012] Preferably, the flame arrester includes a flame arrester housing and a flame arresting core installed inside the flame arrester housing that can prevent flames from passing through; the detection unit is installed inside the flame arrester housing, located on one or both sides of the flame arresting core, and close to the flame arresting core.

[0013] Preferably, multiple detection units are configured, and the multiple detection units are arranged radially within the flame arrester housing to obtain the average blockage signal of different gas delivery channels of the flame arrester core.

[0014] Preferably, the detection unit includes an auxiliary monitoring flame arrestor and a signal sensor adapted to the flame arrestor core. The signal sensor obtains the blockage signal of the flame arrestor core by detecting the blockage signal of the auxiliary monitoring flame arrestor.

[0015] Preferably, the blockage signal of the auxiliary monitoring flame arrester is the weight change signal of the auxiliary monitoring flame arrester caused by blockage;

[0016] The relationship model between the congestion signal and the degree of congestion is: F = (ΔT / T1) * F1;

[0017] Where F represents the current degree of blockage of the flame arrester; T1 represents the time taken for the weight of the auxiliary monitoring flame arrester to increase from M0 in the unblocked state to M1 in the blocked state; ΔT represents the time taken for the weight of the auxiliary monitoring flame arrester to increase from M0 in the unblocked state to Mi in the current blocked state; F1 represents the initial reference value for the degree of blockage of the flame arrester, which is the degree of blockage of the flame arrester when the weight of the auxiliary monitoring flame arrester increases from M0 in the unblocked state to M1 in the blocked state; where Mi > M0.

[0018] Alternatively, the relationship between the blockage signal and the degree of blockage can be modeled as: Fi = (Mi - M0) / ρ / (L * δ) * 100%;

[0019] Where Mi is the weight of the auxiliary monitoring flame arrestor when it is in the current blocked state; M0 is the weight of the auxiliary monitoring flame arrestor when it is not blocked; ρ is the density of the blockage impurities; L is the total volume of the auxiliary monitoring flame arrestor; and δ is the volume porosity of the auxiliary monitoring flame arrestor.

[0020] Preferably, the blockage signal of the auxiliary monitoring flame arrester is the signal of the change in the airflow pressure area generated by the blockage of the auxiliary monitoring flame arrester;

[0021] The relationship model between the congestion signal and the degree of congestion is as follows:

[0022] Where n is the number of detection units, n≥1; F1 is the degree of blockage of the flame arrester in the current blocked state; S0 is the flow area of ​​the medium gas passing through each auxiliary monitoring flame arrester when the flame arrester is not blocked; Si1 is the flow area of ​​the medium gas passing through the i-th auxiliary monitoring flame arrester when the flame arrester is currently blocked.

[0023] Alternatively, the relationship model between the congestion signal and the degree of congestion can be:

[0024] Where n is the number of detection units, n≥1; F1 is the degree of blockage of the flame arrester in the current blocked state; Si0 is the flow area of ​​the medium gas passing through the i-th auxiliary monitoring flame arrester when the flame arrester is not blocked; Si1 is the flow area of ​​the medium gas passing through the i-th auxiliary monitoring flame arrester when the flame arrester is currently blocked.

[0025] Preferably, the processing unit is disposed on the outside of the flame arrester housing and is signal-connected to the detection unit for receiving the detection signal from the detection unit;

[0026] The detection unit is equipped with a signal transmission module for periodically transmitting the detection signal wirelessly to the processing unit; the monitoring device is also equipped with an independent power supply for supplying power to the detection unit.

[0027] A second aspect of this invention provides a method for monitoring a flame arrester, the method comprising:

[0028] Detect the blockage signal of the flame arrester;

[0029] Using a model relating blockage signal to blockage degree, the blockage degree of the flame arrester is calculated based on the blockage signal.

[0030] The display shows a signal indicating the degree of blockage in the flame arrester.

[0031] Preferably, the blockage signal of the flame arrester is at least one of the following: a change signal of the airflow pressure area caused by the blockage of the flame arrester, a change signal of weight, a change signal of light, a change signal of sound, and a change signal of impurity height.

[0032] The technical solutions provided by the embodiments of the present invention have the following beneficial effects:

[0033] In this embodiment of the invention, a processing unit stores a relationship model between the blockage signal and the degree of blockage. This relationship model is established in advance through experiments and is not affected by the skills and experience of different maintenance personnel or technicians. It has high accuracy and reduces the requirements for operators in the maintenance of the flame arrester 1.

[0034] The processing unit can automatically receive the blockage signal detected by the detection unit and use the blockage signal as the input signal to the relational model. The relational model calculates the degree of blockage corresponding to the blockage signal, and the display unit displays the degree of blockage of the flame arrester. This allows operators to intuitively understand the different degrees of blockage of the flame arrester at any time, thereby cleaning the flame arrester more timely and accurately, and improving the operational safety of the flame arrester and gas pipeline. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a flame arrester monitoring device provided in an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of a flame arrester monitoring device provided in another embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the structure of a flame arrester monitoring device provided in another embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the detection unit provided in an embodiment of the present invention;

[0039] Figure 5 This is an equivalent diagram of the airflow pressure area of ​​the auxiliary monitoring flame arrestor in the detection unit provided in this embodiment of the invention in an unblocked state;

[0040] Figure 6 This is an equivalent diagram of the airflow pressure area of ​​the auxiliary monitoring flame arrester in the detection unit provided in the embodiment of the present invention under a blocked state;

[0041] Figure 7 This is a schematic diagram of another detection unit provided in an embodiment of the present invention; wherein, (a) is a schematic diagram of the detection unit in an unblocked state, and (b) is a schematic diagram of the detection unit in a blocked state.

[0042] Explanation of reference numerals in the attached figures

[0043] 1-Flame arrester; 2-Flame arrester housing; 3-Detection unit; 3-1-Auxiliary monitoring flame arrester; 3-1-101-Auxiliary monitoring flame arrester without blockage; 3-1-102-Auxiliary monitoring flame arrester with blockage; 3-2-Signal sensor; 3-1-401-Auxiliary monitoring flame arrester without blockage; 3-1-402-Auxiliary monitoring flame arrester with blockage; 3-2-401-Signal sensor; 4-Signal transmitting module; 5-Processing unit; 6-Flame arrester core; 7-Flame arrester support; 8-Airflow direction. Detailed Implementation

[0044] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0045] In embodiments of the present invention, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to the up, down, left, and right directions indicated with reference to the accompanying drawings. "Inner" and "outer" refer to the inner and outer sides relative to the outline of the component itself.

[0046] See Figures 1-3 The first aspect of this invention provides a flame arrester monitoring device, the monitoring device comprising: a detection unit 3 for detecting a blockage signal of a flame arrester 1; a processing unit 5 for storing a relationship model between the blockage signal and the degree of blockage, and using the relationship model to calculate the degree of blockage of the flame arrester 1 based on the blockage signal detected by the detection unit 3; and a display unit for displaying a signal indicating the degree of blockage of the flame arrester 1.

[0047] It should be noted that the degree of blockage of flame arrester 1 refers to the severity of blockage when flame arrester 1 has become blocked. This severity of blockage can be quantified based on the blockage signal of flame arrester 1 detected by detection unit 3.

[0048] For example, if the blockage signal detected by detection unit 3 is the impurity thickness signal within the flame arrester core 6 of flame arrester 1, then different thicknesses of impurities indicate different degrees of blockage. If the impurity thickness exceeds a certain value, it will affect the normal operation of the gas transmission channel.

[0049] In this embodiment of the invention, the processing unit 5 stores the relationship model between the blockage signal and the degree of blockage. This relationship model is established in advance through experiments and will not be affected by the skills and experience of different maintenance personnel or technicians. It has high accuracy and reduces the requirements of the operators for the maintenance of the flame arrester 1.

[0050] The processing unit 5 can automatically receive the blockage signal detected by the detection unit 3, and use the blockage signal as the input signal of the relational model. The relational model calculates the degree of blockage corresponding to the blockage signal, and the display unit displays the degree of blockage of the flame arrester 1. This allows operators to intuitively understand the different degrees of blockage of the flame arrester 1 at any time, so as to clean the flame arrester 1 more timely and accurately, thereby improving the operational safety of the flame arrester 1 and the gas pipeline.

[0051] There are various signals that can be used to indicate the degree of blockage in the flame arrester 1. In a preferred embodiment of the present invention, in addition to the impurity thickness signal mentioned above, signals such as changes in the airflow pressure area, weight, light, and sound waves caused by the blockage of the flame arrester 1 can also be used. Therefore, the detection unit 3 is configured to detect at least one of the above signals, which are transmitted to the processing unit 5 as blockage signals of the flame arrester 1, so that the processing unit 5 can analyze these signals to determine the degree of blockage in the flame arrester 1.

[0052] The flame arrester 1 includes a flame arrester housing 2 and a flame arresting core 6 coaxially mounted inside the flame arrester housing 2. The flame arrester housing 2 is connected in series with the gas pipeline and is supported and fixed by the flame arrester support 7. The flame arresting core 6 inside the housing can block the passage of flames. In actual installation, the detection unit 3 is installed inside the flame arrester housing 2, located on one or both sides of the flame arresting core 6, and close to the flame arresting core 6 of the flame arrester 1; the processing unit 5 is installed outside the flame arrester housing 2, and can be directly fixed to the flame arrester housing 2 or away from the flame arrester housing 2. In a preferred embodiment of the present invention, the processing unit 5 is directly fixed to the flame arrester housing 2.

[0053] The processing unit 5 is signal-connected to the detection unit 3 and is used to receive the detection signal from the detection unit 3 and calculate the degree of blockage of the flame arrester 1 based on the detection signal. The processing unit 5 and the flame arrester 1 can be connected by a cable for power supply and signal transmission, or they can be connected wirelessly for signal transmission.

[0054] In a preferred embodiment of the present invention, the processing unit 5 and the detection unit 3 transmit signals wirelessly. For this purpose, the detection unit 3 is equipped with a signal transmitting module 4, and the monitoring device is also equipped with an independent power supply for powering the detection unit 3 and the processing unit 5, typically a battery. The signal transmitting module 4 receives the detection signal from the detection unit 3 and periodically transmits the detection signal wirelessly to the processing unit 5. To improve battery life, the signal transmission cycle of the signal transmitting module 4 can be set to, for example, transmitting a detection signal once every 24 hours.

[0055] As mentioned above, the detection unit 3 can be installed on one side of the flame arrester core 6, or on both sides of the flame arrester core 6 respectively. This installation method is not limited by the type of flame arrester 1.

[0056] In a preferred embodiment of the present invention, different installation methods of the detection unit 3 can be selected according to the specific type of the flame arrester 1, so as to more accurately detect the blockage signal of the flame arrester core 6.

[0057] For example, see Figure 1 For the one-way flame arrester 1, the detection unit 3 can be directly installed on the air intake side of the flame arrester core 6; see reference Figure 2 However, for the bidirectional flame arrester 1, the detection unit 3 can be installed on the air inlet side and the air outlet side of the flame arrester core 6 respectively, requiring a larger number of detection units 3.

[0058] In one specific embodiment, the detection unit 3 obtains the blockage signal of the flame arrestor core 6 in the following manner. Specifically, the detection unit 3 includes a signal sensor 3-2 and an auxiliary monitoring flame arrestor 3-1; wherein, the auxiliary monitoring flame arrestor 3-1 is a flame arresting element with the same specifications as the flame arrestor core 6. Taking the flame arrestor core 6 as an example made of corrugated plate flame arrestor disc, "same specifications" means that the corrugated plate thickness and shape of the auxiliary monitoring flame arrestor 3-1 are the same as those of the flame arrestor core 6, with only a difference in volume, and the impurity distribution state is similar when blockage occurs. Therefore, the blockage status of the flame arrestor core 6 can be determined by the blockage status of the auxiliary monitoring flame arrestor 3-1. This facilitates the installation of the signal sensor 3-2 and also improves the measurement accuracy.

[0059] As mentioned earlier, the blockage signal can be at least one of the following: a change in the area of ​​airflow under pressure, a change in weight, a change in light, a change in sound waves, and a change in the thickness of impurities. Different types of signal sensors can be used to achieve different signal measurements.

[0060] The following uses the changes in the airflow pressure area and weight as examples to explain the installation method and detection principle of signal sensor 3-2.

[0061] like Figure 4 As shown, in actual installation, similar to the flame arrestor core 6, the auxiliary monitoring flame arrestor 3-1 is perpendicular to the airflow direction 8. The signal sensor 3-2 is an airflow pressure area signal sensor, which is installed on the air outlet side of the auxiliary monitoring flame arrestor. When the auxiliary monitoring flame arrestor 3-1 is not blocked, the airflow pressure area is as shown... Figure 5 As shown, the area through which gas passes through the auxiliary flame arrester 3-1-101 is the cross-section of the gas delivery channel of the auxiliary flame arrester 3-1; when the auxiliary flame arrester 3-1 is blocked, refer to... Figure 6The dashed triangular box in the image can be considered as the effective cross-section of gas passing through the auxiliary monitoring flame arrester 3-1-102. This effective cross-section is relative to... Figure 5 The effective cross-section of the airflow shown is smaller. The airflow pressure area signal sensor is installed on the rear side of the auxiliary monitoring flame arrestor 3-1, and can detect the effective airflow area of ​​the auxiliary monitoring flame arrestor 3-1, i.e., the airflow pressure area. The smaller the effective airflow area, the more severe the blockage. By detecting the effective airflow area of ​​the auxiliary monitoring flame arrestor 3-1, the degree of blockage of the auxiliary monitoring flame arrestor 3-1 can be quantified. This degree of blockage also represents the degree of blockage of the flame arrestor core 6, and thus represents the degree of blockage of the flame arrestor 1.

[0062] During the actual operation of the flame arrester 1, the gas delivery channels at different locations of the flame arrester core 6 may experience varying degrees of blockage. In a preferred embodiment of the present invention, to more accurately assess the overall blockage of the flame arrester core 6, multiple detection units 3 are configured. These multiple detection units 3 are arranged radially within the flame arrester housing 2, thereby allowing the processing unit 5 to obtain the average blockage signal of different gas delivery channels of the flame arrester core 6. This avoids the inadequacy of local blockage signals to represent the overall blockage, thus enabling a more accurate assessment of the blockage degree of the flame arrester 1.

[0063] Based on the airflow pressure area change signal detected by detection unit 3, processing unit 5 can quantify the degree of blockage of flame arrester 1 using various relational models. For example,

[0064] Example 1

[0065] The degree of blockage in flame arrester 1 is quantified using the following relational model:

[0066]

[0067] Where n is the number of detection units 3, n≥1; F1 is the degree of blockage of flame arrester 1 in the current blocked state; S0 is the flow area of ​​medium gas passing through each auxiliary monitoring flame arrester 3-1 when flame arrester 1 is not blocked, and it is assumed that the gas flow area of ​​each auxiliary monitoring flame arrester 3-1 is equal; Si1 is the flow area of ​​medium gas passing through the i-th auxiliary monitoring flame arrester 3-1 when flame arrester 1 is blocked in the current blocked state.

[0068] like Figure 1 As shown, when the number of detection units 3 is 1, F1 = 1 - S1 / S0. In a preferred embodiment of the present invention, in order to more accurately monitor the degree of blockage of each flame arrestor channel, the auxiliary monitoring flame arrestor 3-1 in the detection unit 3 is formed with, for example, 8 gas supply channels, and the signal sensor uses these 8 gas supply channels as the blockage monitoring objects.

[0069] It should be noted that in some other embodiments, a signal sensor can also be installed directly on one side of the flame arrester 1. In this case, there is no need to set up a separate auxiliary monitoring flame arrester 3-1.

[0070] It should be noted that the above formula Using the flow area S0 of the medium gas passing through each auxiliary monitoring flame arrestor 3-1 in the unblocked state of flame arrestor 1 as a reference value, the absolute blockage degree of flame arrestor 1 is calculated.

[0071] When the equipment parameters of flame arrester 1, namely the gap value of flame arrester core 6, are unknown, the relative degree of blockage of flame arrester 1 can be calculated based on the change in airflow area of ​​auxiliary monitoring flame arrester component 3-1 to S1 after flame arrester 1 has been running for a period of time. When the number of detection units 3 is 1, Fi = 1 - Si / S1.

[0072] Example 2

[0073] The degree of blockage in flame arrester 1 is quantified using the following relational model:

[0074]

[0075] Where n is the number of detection units 3, n≥1; F1 is the degree of blockage of flame arrester 1 in the current blocked state; Si0 is the flow area of ​​medium gas passing through the i-th auxiliary monitoring flame arrester 3-1 when flame arrester 1 is not blocked; Si1 is the flow area of ​​medium gas passing through the i-th auxiliary monitoring flame arrester 3-1 when flame arrester 1 is currently blocked.

[0076] like Figure 2 As shown, when the flame arrester 1 is a bidirectional flame arrester 1, the number of detection units 3 is 2, and the two detection units 3 are located on the left and right sides of the flame arrester core 6, respectively. The processing unit 5 quantifies the degree of blockage of the flame arrester 1 through the following relationship model: F1=1-((S11-S10)+(S21-S20)) / 2.

[0077] It is also important to note the above formulas Using the flow area Si0 of the medium gas passing through the i-th auxiliary monitoring flame arrester 3-1 in the unblocked state of flame arrester 1 as a reference value, the absolute blockage degree of flame arrester 1 is calculated.

[0078] When the equipment parameters of flame arrester 1, i.e., the gap value of flame arrester core 6, are unknown, the relative degree of blockage of flame arrester 1 can be calculated based on the change of the airflow area of ​​the i-th auxiliary monitoring flame arrester 3-1 to Si1′ after the flame arrester 1 has been running for a period of time. When the number of detection units 3 is 2, F1 = 1 - ((S11 - S11') + (S21 - S21')) / 2.

[0079] When the blockage signal detected by detection unit 3 is a weight change signal, refer to Figure 7 The detection unit includes an auxiliary monitoring flame arrester 3-1 and a signal sensor 3-2-401. Similarly, the auxiliary monitoring flame arrester 3-1 uses a flame arresting element of the same specification as the flame arresting core, so as to indirectly reflect the degree of blockage of the flame arresting core by detecting the degree of blockage of the auxiliary monitoring flame arrester. The signal sensor 3-2-401 is a weight signal sensor, which can measure the weight change of the auxiliary monitoring flame arrester. The processing unit 5 can calculate the degree of blockage of the flame arrester based on this weight change signal. Figure 7 (a) shows a schematic diagram of the auxiliary monitoring flame arrestor 3-1-401 and the signal sensor 3-2-401 without blockage. Figure 7 (b) shows a schematic diagram of the auxiliary monitoring flame arrestor 3-1-402 and the signal sensor 3-2-401 that are blocked.

[0080] Based on the weight change signal detected by detection unit 3, processing unit 5 can quantify the degree of blockage of flame arrester 1 using various relational models. For example,

[0081] Example 3

[0082] The relationship model between the congestion signal and the degree of congestion is: F = (ΔT / T1) * F1;

[0083] Where F represents the current degree of blockage of flame arrester 1; T1 represents the time taken for the weight of auxiliary monitoring flame arrester 3-1 to increase from M0 in the unblocked state to M1 in the blocked state; ΔT represents the time taken for the weight of auxiliary monitoring flame arrester 3-1 to increase from M0 in the unblocked state to Mi in the current blocked state; F1 represents the initial reference value for the degree of blockage of flame arrester 1, which is the degree of blockage of flame arrester 1 when the weight of auxiliary monitoring flame arrester 3-1 increases from M0 in the unblocked state to M1 in the blocked state; where Mi > M0.

[0084] Example 4

[0085] The relationship model between the blockage signal and the degree of blockage is: Fi=(Mi-M0) / ρ / (L*δ)*100%;

[0086] Where Mi is the weight of the auxiliary monitoring flame arrestor 3-1 when it is in the current blocked state; M0 is the weight of the auxiliary monitoring flame arrestor 3-1 when it is not blocked; ρ is the density of the blocking impurities; L is the total volume of the auxiliary monitoring flame arrestor 3-1; and δ is the volume porosity of the auxiliary monitoring flame arrestor 3-1, which is the ratio of the void volume of the auxiliary monitoring flame arrestor 3-1 to the total volume of the auxiliary monitoring flame arrestor 3-1.

[0087] It is understood that the processing unit 5 can be implemented, for example, by a microcontroller, a digital signal processor, a programmable logic controller, and their peripheral circuits. The display unit can be implemented, for example, by a display screen, and the display method can be designed according to actual needs, as long as it meets the requirements of easy understanding and interpretation, including but not limited to patterns, curves, tables, numbers, and combinations thereof.

[0088] Based on the flame arrester monitoring device provided in the first aspect of the present invention, the second aspect of the present invention provides a flame arrester monitoring method, the monitoring method comprising: detecting a blockage signal of a flame arrester 1; calculating the blockage degree of the flame arrester 1 based on the blockage signal using a relationship model between the blockage signal and the degree of blockage; and displaying a signal indicating the degree of blockage of the flame arrester 1.

[0089] The blockage signal of the flame arrester 1 is at least one of the following: a change signal of the airflow pressure area, a change signal of weight, a change signal of light, a change signal of sound wave, and a change signal of impurity height caused by the blockage of the flame arrester 1.

[0090] For more specific technical details regarding the flame arrester 1 monitoring method provided in the second aspect of the present invention, please refer to the flame arrester 1 monitoring device provided in the first aspect of the present invention, which will not be repeated here.

[0091] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention. This includes combining various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not further describe the various possible combinations. However, these simple modifications and combinations should also be considered as part of the content disclosed in this invention and are all within the protection scope of this invention.

Claims

1. A flame arrester monitoring device, characterized in that, The monitoring device includes: The detection unit is used to detect the blockage signal of the flame arrester; The processing unit is used to store a pre-established relationship model between blockage signals and blockage degree, and to use the relationship model to calculate the blockage degree of the flame arrester based on the blockage signal detected by the detection unit. A display unit is used to display a signal indicating the degree of blockage of the flame arrester; The flame arrester includes a flame arrester housing and a flame arresting core installed inside the flame arrester housing that can prevent flames from passing through; the detection unit is installed inside the flame arrester housing, located on one or both sides of the flame arresting core, and close to the flame arresting core. The detection unit includes an auxiliary monitoring flame arrestor and a signal sensor adapted to the flame arrestor core. The signal sensor obtains the blockage signal of the flame arrestor core by detecting the blockage signal of the auxiliary monitoring flame arrestor. The detection unit is configured to detect at least one of the following signals: change in airflow pressure area, change in weight, change in light, change in sound wave, and change in impurity thickness caused by flame arrester blockage, in order to obtain the blockage signal of the flame arrester.

2. The flame arrester monitoring device according to claim 1, characterized in that, Multiple detection units are configured and arranged radially within the flame arrester housing to obtain the average blockage signal of different gas delivery channels of the flame arrester core.

3. The flame arrester monitoring device according to claim 1, characterized in that, The blockage signal of the auxiliary monitoring flame arrester is the weight change signal of the auxiliary monitoring flame arrester caused by blockage; The relationship between the congestion signal and the degree of congestion is modeled as: F = (ΔT / T1) F1; Where F represents the current degree of blockage of the flame arrester; T1 represents the time taken for the weight of the auxiliary monitoring flame arrester to increase from M0 in the unblocked state to M1 in the blocked state; ΔT represents the time taken for the weight of the auxiliary monitoring flame arrester to increase from M0 in the unblocked state to Mi in the current blocked state; F1 represents the initial reference value for the degree of blockage of the flame arrester, which is the degree of blockage of the flame arrester when the weight of the auxiliary monitoring flame arrester increases from M0 in the unblocked state to M1 in the blocked state; where Mi > M0. Alternatively, the relationship between the congestion signal and the degree of congestion can be modeled as: Fi = (Mi - M0) / ρ / (L δ) 100%; Where Mi is the weight of the auxiliary monitoring flame arrestor when it is in the current blocked state; M0 is the weight of the auxiliary monitoring flame arrestor when it is not blocked; ρ is the density of the blockage impurities; L is the total volume of the auxiliary monitoring flame arrestor; and δ is the volume porosity of the auxiliary monitoring flame arrestor.

4. The flame arrester monitoring device according to claim 1, characterized in that, The blockage signal of the auxiliary monitoring flame arrester is the signal of the change in the airflow pressure area generated by the blockage of the auxiliary monitoring flame arrester; The relationship model between the congestion signal and the degree of congestion is: F1 = 1 - / S0; Where n is the number of detection units, n≥1; F1 is the degree of blockage of the flame arrester in the current blocked state; S0 is the flow area of ​​the medium gas passing through each auxiliary monitoring flame arrester when the flame arrester is not blocked; Si1 is the flow area of ​​the medium gas passing through the i-th auxiliary monitoring flame arrester when the flame arrester is currently blocked. Alternatively, the relationship between the congestion signal and the degree of congestion can be modeled as: F1 = 1 - ; Where n is the number of detection units, n≥1; F1 is the degree of blockage of the flame arrester in the current blocked state; Si0 is the flow area of ​​the medium gas passing through the i-th auxiliary monitoring flame arrester when the flame arrester is not blocked; Si1 is the flow area of ​​the medium gas passing through the i-th auxiliary monitoring flame arrester when the flame arrester is currently blocked.

5. The flame arrester monitoring device according to claim 1, characterized in that, The processing unit is located on the outside of the flame arrester housing and is signal-connected to the detection unit for receiving the detection signal from the detection unit. The detection unit is equipped with a signal transmission module for periodically transmitting the detection signal wirelessly to the processing unit; the monitoring device is also equipped with an independent power supply for supplying power to the detection unit.

Images