TWI614487B - Monitoring device and monitoring method for pollution source of fluid discharge pipe - Google Patents

Abstract

The invention relates to a pollution source monitoring device and a monitoring method for a fluid discharge pipeline. A detecting unit is provided with a variable capacity space, and a piston is arranged in the variable capacity space, and the piston is moved to control the capacity in the variable capacity space. change. A gas detecting element detects the type or concentration of a sample gas. An air supply unit outputs an air into the variable capacity space. A processing unit signal is coupled to the piston, the gas detecting component, and the air supply unit. Diluting the sample gas with air, determining the original concentration of the sample gas before undiluting according to the concentration of the diluted sample gas and the final capacity of the variable capacity space, and determining the liquid discharge pipe Whether the gas concentration meets the standard value.

Description

Pollution source monitoring device and monitoring method for fluid discharge pipeline

The invention relates to a concentration according to the dilution of the sampling gas and changing the capacity of the variable capacity space, and can inversely calculate the original concentration of the sample gas before undiluting, and determine whether the gas concentration in the fluid discharge pipe is consistent. Standard value monitoring device and monitoring method.

As the current air pollution problem has become more and more serious, the damage to the ecological environment is also quite large, and the general boiler power generation, cement manufacturing, electric arc furnace steelmaking, waste incineration, petrochemical manufacturing, coke ovens and sintering furnaces, etc. The most polluting manufacturer. Therefore, the gas emitted by it must be monitored to avoid the occurrence of polluted air. Only the gas must be filtered through the filtering equipment in the chimney before it can be released into the atmosphere. However, it is easy for manufacturers to turn off the filtration equipment at night, and directly discharge the polluting gas, or the filter equipment is faulty or the filter material in it has expired, and it is not known that it will continue to be used, which will cause pollution. The gas affects the quality of the air and harms the health of the people. Therefore, how to effectively monitor pollution sources and prevent them from blocking is an important issue.

Therefore, there is a patent case No. I349575 "Organic Gas Monitoring Device and Method" published by the Republic of China on October 1, 100, which discloses: for monitoring organic gases before and after passing through a pollution prevention device, including: a first sampling injection valve, sampling the organic gas after passing through the pollution prevention device; a second sampling injection valve, in series with the first sampling injection valve, sampling the organic gas before passing through the pollution prevention device; An empty tube is connected in series between the first sampling injection valve and the second sampling injection valve; a detector detects the organic gas sampled by the first and second sampling injection valves to obtain a a detection signal; a communication and control module; a computer connected to the detector and the first and second sampling injection valves via the communication and control module for controlling switching of the first and second sampling injection valves And recording and analyzing the detection signal detected by the detector, wherein before switching the first and second sampling injection valves, the empty tube has a carrier gas, and the carrier gas system is different from the pollution The organic gas before and after the control device; an empty pipe string, the organic gas is received by the first and second sampling injection valves, and the detector is used to detect the front and back of the pollution prevention device a concentration of the total hydrocarbon content of the organic gas; and a separation column, the organic gas is received by the first and second sampling injection valves, and the detector is used to detect the front and back of the pollution prevention device The concentration of individual volatile organic compounds in organic gases.

However, the monitoring device of the patent case has a limit on the detection of the gas concentration. When the gas concentration of the pollution source exceeds the limit of the monitoring device, the correct gas concentration cannot be detected in time for the response. Unless it is replaced by a device with a larger monitoring limit, the general monitoring device is fixed, cannot be disassembled and replaced arbitrarily, and the purchase cost is relatively increased, so it is not ideal in use.

Accordingly, in view of the current monitoring for fluid discharge pipes, the above disadvantages are encountered. Therefore, the present invention provides a pollution source monitoring device for a fluid discharge pipeline, comprising: at least one detecting unit having a variable capacity space therein, wherein the detecting unit is respectively provided with a first pipeline and a second pipeline connected to the The variable capacity space, the first pipeline is provided with a first control valve to control the conduction and closure of the first pipeline, and the second pipeline is provided with a second control valve to control the second pipeline Inductive and closed, a piston is disposed in the variable capacity space, and the piston is moved to control the capacity change in the variable capacity space. A gas detecting component is disposed in the variable volume space for detecting a type or concentration of a sample gas in the variable volume space. An air supply unit is coupled to the first conduit for outputting an air into the variable volume space. a processing unit, wherein the signals are respectively connected to the first A control valve, the second control valve, the piston, the gas detecting element and the air supply unit are respectively controlled to operate.

The present invention further includes a stroke sensor disposed in the variable capacity space and connected to the processing unit to detect a moving distance of the piston and transmitting the value of the moving distance to the Processing unit.

The source of power when the piston moves is a motor, a hydraulic cylinder or a pneumatic cylinder.

The gas detecting component is disposed on an inner wall of the detecting unit.

The gas detecting element is for detecting a gas species or concentration of one of: sulfur dioxide, nitrogen oxides, carbon monoxide or hydrogen chloride.

The detecting unit is respectively installed at a front end and a rear end of a filter device in a fluid discharge pipe, so as to detect a difference value of the sample gas concentration before and after filtering by the filter device.

The second conduit of the two detecting units directly extends into the fluid discharge conduit for sampling the sample gas passing through the fluid discharge conduit.

The invention can also be a pollution source monitoring method for a fluid discharge pipeline, which utilizes the pollution source monitoring device of the fluid discharge pipeline to monitor a gas concentration in a fluid discharge pipeline, and includes the following steps. A. The two detection units are respectively installed at the front end and the rear end of the filter device in the fluid discharge pipe, thereby detecting the gas concentration before and after the filter is filtered through the filter device. B. The variable capacity space that controls the detection unit has a capacity to accommodate the sampled gas within the fluid discharge conduit. C. Gradually increase the capacity in the variable volume space and input the air to dilute the concentration of the sample gas. D. Stop increasing the capacity in the variable capacity space until the concentration of the sample gas is diluted to conform to the range of values detectable by the gas detecting element. E. The processing unit calculates, according to the concentration of the diluted sample gas detected by the gas detecting component, and the final capacity of the variable capacity space, calculates the original concentrated concentration of the sample gas before undiluting The value of the degree. F. The processing unit determines whether the gas concentration in the fluid discharge conduit meets a standard value according to a difference value between the filtered gas concentration before and after the filtration.

The present invention further adds a step G. The processing unit determines that the concentration of the gas in the fluid discharge pipe has exceeded a standard value, that is, activates a light-transmitting device through wireless transmission, confirms the gas discharged from the fluid discharge pipe, and Monitor the spread of pollution from the gas to the atmosphere.

According to the above technical features, the following advantages are obtained:

1. By changing the capacity of the variable capacity space, and inputting air to dilute the concentration of the sampled gas, by calculating the original concentration of the sampled gas by back-calculation, it can be used to determine whether the gas concentration in the fluid discharge pipe meets the standard. value.

2. It is possible to detect the concentration of different polluting gases without increasing the monitoring equipment of various detection upper limit ranges, so that the purchase cost can be greatly saved.

(1)‧‧‧Detection unit

(11) ‧‧‧Variable capacity space

(12) ‧‧‧First line

(13) ‧‧‧Second line

(14)‧‧‧First control valve

(15)‧‧‧Second control valve

(16) ‧‧‧Pistons

(2) ‧‧‧ gas detection components

(3) ‧‧‧Air supply unit

(4) ‧‧‧Processing unit

(5)‧‧‧Travel sensor

(A) ‧ ‧ fluid discharge pipeline

(B) ‧‧‧Filter equipment

[First figure] is a component configuration diagram of the monitoring device of the present invention.

[Second figure] is a schematic diagram of the monitoring device of the present invention for monitoring a fluid discharge pipe.

[Third image] is a schematic diagram of the use of the detection unit of the present invention for detecting gas.

[Fourth Diagram] is a schematic diagram of the present invention for increasing the variable capacity space capacity to dilute the sample gas.

[Fifth Diagram] is a flow chart of the monitoring method of the present invention.

Referring to the first and second figures, the present invention is a pollution source monitoring device for a fluid discharge pipeline, comprising a detecting unit (1), a gas detecting component (2), an air supply unit (3), and processing. Unit (4) and stroke sensor (5), wherein: At least one detecting unit (1) is internally provided with a variable capacity space (11), and the detecting unit (1) is respectively provided with a first pipeline (12) and a second pipeline (13) The variable capacity space (11). A first control valve (14) is disposed on the first conduit (12) to control conduction and closure of the first conduit (12). Further, the second pipeline (13) is provided with a second control valve (15) for controlling the conduction and closing of the second conduit (13). In addition, a piston (16) is disposed in the variable capacity space (12) to move the piston (16) to control a change in capacity in the variable capacity space (11), and when the piston (16) moves The power source can be a motor, a hydraulic cylinder or a pneumatic cylinder.

The gas detecting component (2) is disposed in the variable capacity space (11). The present invention provides the gas detecting component (2) on the inner wall of the detecting unit (1), thereby providing The type or concentration of the sampled gas in the variable volume space (11) is detected. The gas detecting element (2) is available to detect the gas species or concentration of one of: sulfur dioxide, nitrogen oxides, carbon monoxide or hydrogen chloride.

An air supply unit (3) is connected to the first conduit (12) for allowing an air to be output through the first conduit (12) into the variable capacity space (11) for performing The effect of dilution.

a processing unit (4) connected to the first control valve (14), the second control valve (15), the piston (16), the gas detecting component (2) and the air supply unit (3), respectively In order to control their actions separately.

The stroke sensor (5) is disposed in the variable capacity space (11), and the signal is connected to the processing unit (4), thereby detecting the moving distance of the piston (16) and moving the distance value Transfer to the processing unit (4).

In use, as shown in the second figure, the two detecting units (1) are respectively installed at the front end and the rear end of the filtering device (B) in a fluid discharge pipe (A), thereby detecting that a gas has not passed. The filter device (B) has a difference in the concentration of the sampled gas before and after the filtration. The second pipe (13) of the two detecting units (1) is directly inserted into the fluid discharge pipe (A) for sampling the gas passing through the fluid discharge pipe (A). The air supply unit (3) is respectively connected to the two detecting units (1) for respectively outputting an air into the variable capacity space (11) of the two detecting units (1). The processing unit (4) is separately connected to the signal The first control valve (14), the second control valve (15), the piston (16), the two gas detecting elements (2) and the air supply unit (3) connected to the two detecting units (1) In order to control their actions separately.

When gas detection is started, as shown in the second and third figures. First, the processing unit (4) controls the pistons (16) of the two detecting units (1) to move outward to a predetermined distance, thereby increasing the capacity of a certain size in the two variable capacity spaces (11). Simultaneously controlling the second control valve (15) to start to turn on the second second pipeline (13), and the negative pressure generated in the two variable capacity spaces (11) can be respectively passed through the second pipeline (13) Inhaling the sample gas in the fluid discharge pipe (A) that has not been filtered by the filtering device (B), and the filtered sample gas. The two gas detecting elements (2) are then configured to detect the concentration of the sampled gas in the two variable volume spaces (11). The two sample gas concentrations are separately transmitted to the processing unit (4) to determine the difference between the pre-filtered and filtered sample gas concentrations. If the difference value is within the standard value, it means that the filter device (B) is in normal operation, and is not secretly shut down for the discharge of the polluting gas. If the difference value slightly exceeds the standard value, it can be judged that the filter material in the filtering device (B) may be overdue and expired, and should be replaced immediately. If the difference value exceeds the standard value, it can be judged that the filtering device (B) has been turned off, and in order to secretly discharge the contaminated gas, it should be disposed of immediately. For example, the processing unit (4) can notify a remote end of the monitoring result by wireless transmission through a wireless transmission module (not shown), or immediately start remotely located near the fluid discharge pipe (A). The light equipment (not shown) immediately monitors the pollutants emitted by the fluid discharge pipe (A) to confirm whether it has the pollutants and the diffusion range of the pollutants in the atmosphere, and The reference of the relevant units for emergency response or the basis for future pollution ban.

As shown in the fourth figure, in the process of gas monitoring, if any gas sampled in the variable volume space (11) exceeds the upper limit range detectable by the gas detecting element (2) When the value is reached, it means that the contamination level of the sample gas has exceeded the range of the load detection of the gas detecting element (2). Therefore, the processing unit (4) can control the piston (16) in the variable capacity space (11) to continue to move outward, thereby increasing the capacity in the variable capacity space (11). At this time, the second control valve (15) is controlled to stop conducting, Closing the second line (13), but controlling the first control valve (14) to start to turn on the first line (12), and simultaneously starting the air supply unit (3) to start to act, thereby outputting an air, The air is introduced into the variable volume space (11) via the first line (12), and the sample gas of the variable volume space (11) is diluted. Then, the stroke sensor (5) can start detecting the moving distance of the piston (16), and transmit the value of the moving distance to the processing unit (4), and the processing unit (A) can be based on the piston ( 16) The moving distance, and the capacity of the variable capacity space (11) after the change is calculated. At the same time, the gas detecting component (2) continuously detects the sample gas in the variable capacity space (11) until the gas concentration sampled in the variable volume space (11) is diluted to conform to the gas detection. When the component (2) can detect the range value, the piston (16) is stopped from moving outward. At the same time, the stroke sensor (5) transmits the value of the moving distance of the piston (16) to the processing unit (4), and the processing unit (4) calculates the distance according to the moving distance of the piston (16). The capacity of the variable capacity space (11) after the last change, such that the diluted sample gas concentration detected by the gas detecting element (2) and the final capacity of the variable capacity space (11) The processing unit (4) can calculate the value of the original concentration of the sample gas before undiluting by back-calculation. The processing unit (4) determines the pre-filtering and the sampling gas concentration in the variable capacity space (11) of the two gas detecting elements (2) disposed at the front end and the rear end of the filtering device (B). Whether the difference value of the filtered sample gas concentration meets the monitored standard value.

The invention can also be a pollution source monitoring method for a fluid discharge pipeline, which monitors the gas concentration in a fluid discharge pipeline by using the pollution source monitoring device of the fluid discharge pipeline. As shown in the fifth figure, the following steps are included:

A. As shown in the second figure, the two detecting units (1) are respectively installed at the front end and the rear end of the filtering device (B) in a fluid discharge pipe (A), thereby detecting that a gas has not passed the filtering. Equipment (B) Gas concentration before and after filtration.

B. As shown in the third figure, the variable capacity space (11) controlling the detection unit (1) has a capacity to accommodate the sample gas in the fluid discharge conduit (A).

C. As shown in the fourth figure, gradually increase the capacity in the variable capacity space (11) and input an air to dilute the concentration of the sample gas.

D. Stop increasing the capacity in the variable capacity space (11) until the concentration of the sample gas is diluted to conform to the range of values detectable by the gas detecting element (2).

E. As shown in the second figure, the processing unit (4) detects the concentration of the sampled gas after dilution according to the gas detecting element (2), and the final capacity of the variable capacity space (11). The size is calculated by back-calculating the value of the original concentration of the sample gas before it is diluted.

F. The processing unit (4) determines whether the gas concentration in the fluid discharge pipe (A) meets a standard value according to a difference value between the filtered gas concentration before and after the filtration.

G. The processing unit (4) determines that the gas concentration in the fluid discharge pipe (A) has exceeded a standard value, that is, activates a light transmission device by wireless transmission, and confirms the gas discharged from the fluid discharge pipe (A). Monitor and monitor the spread of pollution from the gas to the atmosphere.

By using the above-mentioned monitoring device and monitoring method, it is possible to monitor whether the gas discharged from the fluid discharge pipe is qualified for a long period of time, and further determine whether the filtering device (B) is based on the difference between the concentration of the sampled gas before and after filtering. The failure, and whether the filter material in the filter device (B) expires, should be replaced immediately. Therefore, the present invention does not need to increase the monitoring equipment of various detection upper limit ranges, that is, it can detect the concentration of different polluting gases for a long time, so that the purchase cost can be greatly saved.

However, the above description is only two of the embodiments of the present invention, and the scope of the patent application and the scope of the description of the present invention are not limited thereto. It is still within the scope of the protection covered by the scope of the invention.

(1)‧‧‧Detection unit

(11) ‧‧‧Variable capacity space

(12) ‧‧‧First line

(13) ‧‧‧Second line

(14)‧‧‧First control valve

(15)‧‧‧Second control valve

(16) ‧‧‧Pistons

(2) ‧‧‧ gas detection components

(3) ‧‧‧Air supply unit

(4) ‧‧‧Processing unit

(5)‧‧‧Travel sensor

Claims (7)

A pollution source monitoring device for a fluid discharge pipeline includes: at least one detecting unit having a variable capacity space therein, wherein the detecting unit is respectively provided with a first pipeline and a second pipeline connecting the variable capacity space The first pipeline is provided with a first control valve for controlling the conduction and closing of the first pipeline, and the second pipeline is provided with a second control valve for controlling the second pipeline and a fluid discharge conduit. Turning on and off, a piston is disposed in the variable capacity space, and the piston is moved to control a capacity change in the variable capacity space; a gas detecting component is disposed in the variable capacity space for detecting a type or concentration of the sampled gas in the variable volume space; an air supply unit connected to the first line to output an air to the variable capacity space; and a processing unit, wherein the signal is separately Connecting to the first control valve, the second control valve, the piston, the gas detecting component and the air supply unit to respectively control the actuation; the second pipeline of the detecting unit is directly Into the inside of the fluid discharge pipe, the second pipes are respectively installed at the front end and the rear end of the filter device in the fluid discharge pipe, thereby detecting the sample gas before and after being filtered by the filter device. The difference between the concentrations, and the first pipeline of the two detecting units are respectively connected to the air supply unit. The pollution source monitoring device of the fluid discharge pipe according to claim 1 is further provided with a stroke sensor, the stroke sensor is disposed in the variable capacity space, and the signal is connected to the processing unit to detect the piston. One moves the distance and transmits the value of the moving distance to the processing unit. The pollution source monitoring device of the fluid discharge pipe according to the first aspect of the invention, wherein the source of power when the piston moves is a motor, a hydraulic cylinder or a pneumatic cylinder. The pollution source monitoring device of the fluid discharge pipe according to the first aspect of the invention, wherein the gas detecting component is disposed on an inner wall of the detecting unit. The pollution source monitoring device for a fluid discharge pipe according to claim 1, wherein the gas detecting component is configured to detect a gas species or concentration of one of: sulfur dioxide, nitrogen oxides, carbon monoxide or hydrogen chloride. A method for monitoring a pollution source of a fluid discharge pipe is to monitor a gas concentration in a fluid discharge pipe by using a pollution source monitoring device of a fluid discharge pipe as described in claim 1 of the patent application, comprising the following steps: A. The detecting unit is respectively installed at the front end and the rear end of the filtering device in the fluid discharge pipe, thereby detecting the gas concentration before and after filtering of the gas without passing through the filtering device; B. controlling the detecting unit The variable capacity space has a capacity to accommodate the sample gas in the fluid discharge pipe; C. gradually increase the capacity in the variable capacity space, and input the air to dilute the concentration of the sample gas; Until the concentration of the sample gas is diluted to meet the range of values detectable by the gas detecting component, the capacity in the variable capacity space is stopped; E. the processing unit detects the gas detecting component according to the gas detecting component The concentration of the sampled gas after dilution and the final capacity of the variable capacity space are calculated by inversely calculating that the sample gas is not diluted. Value of the original concentration before; F. The front filter processing unit according to the sampling difference value of the gas concentration after filtration to determine the concentration of the gas within the fluid discharge conduit meets the standard value. For example, in the method for monitoring the pollution source of the fluid discharge pipe mentioned in claim 6 of the patent application, a step G is further added. The processing unit determines that the concentration of the gas in the fluid discharge pipe has exceeded a standard value, that is, a light transmission is initiated by wireless transmission. The device monitors and monitors the gas discharged from the fluid discharge pipe and monitors the diffusion range of the gas discharged into the atmosphere.