Detection box for odor detection

Abstract

The utility model relates to the field of gas detection equipment, and discloses a detection box for odor detection, when the detection box works, an air pump is started, so that odor flows into a gas detection instrument through a main inlet pipe for odor detection; after the detection is completed, the main inlet pipe is closed, and the air pump is communicated with the branch inlet pipe, so that the dry gas from the first drying device flows into the gas detection instrument, the probe of the gas detector is dried, and the influence on the detection accuracy of the gas detector due to residual water vapor after the detection is avoided. The air pump can be reversely communicated with the gas detection instrument, so that the air pump is reversely communicated with the branch inlet pipe, fresh air flows into the gas detection instrument, water vapor in the gas detection instrument and a pipeline is blown away, and the situation that the service life of the gas detector is affected due to the fact that odor is dissolved in water drops on the surface of the probe during secondary detection is avoided; in this way, the probe of the gas detector does not make contact with high-concentration odor in the period, and the service life of the gas detector is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of gas detection equipment, specifically, relate to a detection box for odor detection. BACKGROUND

[0002] With people's attention to the quality of life increasing day by day, air pollution and its impact on human health has become one of the global focus. The pros and cons of air quality is not only directly related to human life and health, also reflects the overall level of social environment to some extent. In recent years, with the acceleration of industrialization and urbanization process, various air pollution problems are increasingly prominent, including ozone, particulate matter, volatile organic compounds (VOCs) and odor pollution. Air quality detection as an important part of environmental protection, plays a vital role in pollution source identification, pollutant concentration assessment and environmental governance effect verification.

[0003] In the field of environmental detection, odor as a major air pollution problem, its cause is complex and far-reaching harm. Odor pollution is usually mixed by a variety of volatile gases, including hydrogen sulfide, ammonia, methyl mercaptan, dimethyl sulfide, etc., widely exist in landfill, sewage treatment plant, chemical plant and other places. Among them, hydrogen sulfide because of its toxicity, obvious smell and wide generating conditions, become one of the important target objects in odor detection. Hydrogen sulfide not only has significant harmfulness to human health, but also may have an inestimable destructive effect on the environment. For example, in the case of low concentration, hydrogen sulfide will stimulate the respiratory system and eyes, and when the concentration is high, it may lead to acute poisoning and even death. In addition, hydrogen sulfide reacts with other chemical substances in the air, which may further produce secondary pollutants harmful to the ecosystem.

[0004] At present, the traditional odor detection method mainly relies on artificial olfactory method, although the method is simple to operate, but there is great subjectivity and limitation: the detection result is easy to be disturbed by the olfactory sensitivity of the detection personnel, physical condition and external environment, it is difficult to guarantee its accuracy and consistency. At the same time, artificial olfactory method may also make the detection personnel directly exposed to high concentration of pollution environment, there is health risk. For this reason, the development of modern environmental monitoring technology gradually tends to use automatic, digital and intelligent detection means to improve the detection efficiency and safety.

[0005] In the monitoring of hydrogen sulfide, the application of special detection instruments is becoming more and more widespread. These instruments can realize real-time and continuous monitoring of hydrogen sulfide concentration through electrochemical sensors, optical sensors or infrared absorption technology. Compared with traditional methods, the modern instrument detection scheme has the advantages of high precision, fast response and strong reliability, and can provide more scientific data support for environmental quality assessment and pollution source control. In addition, these instruments can also integrate various functions, such as wireless data transmission, alarm system and remote monitoring, etc., further improving the convenience and intelligent level of monitoring.

[0006] In summary, with the improvement of environmental protection consciousness and the continuous progress of monitoring technology, the scientific monitoring of odor components and hydrogen sulfide concentration in the air has become an important issue in the field of environmental detection. In the future, with the further integration of detection technology and data analysis technology, its application range and actual effect will be more extensive and significant, providing more solid technical support for environmental protection and risk management.

[0007] For the detection problem of odor pollution, the industry has carried out related research and design; for example, a gas detection box with drying function, the gas to be detected is transported to the condenser pipe by the air pump, and then the condenser pipe condenses the water vapor in the gas into liquid condensate water during the conveying process; then the dry gas and the condensate water enter the gas storage tank below the gas detection instrument, and the detection probe of the gas detection instrument contacts the dry gas at the upper part of the gas storage tank for detection. However, although the existing technology effectively realizes the detection of odor pollution, there are still some deficiencies in actual application;

[0008] Specifically, in the detection of odor pollution, the water vapor in the odor accumulates and condenses in the air inlet pipeline, which may adhere to the surface of the gas detection instrument probe, and the long-term water vapor condensation may cause the toxic gas to dissolve in the adhered water, thereby significantly affecting the detection accuracy of the probe. In addition, the water dissolved by the toxic gas can corrode the probe, reducing the service life of the gas detection instrument, therefore, how to effectively solve the water vapor condensation problem in the air inlet pipeline and improve the accuracy of hydrogen sulfide detection and equipment durability is still the direction that the existing technology needs to improve. Practical new type content

[0009] The utility model discloses a detection box for odor detection to overcome the technical problems existing in the prior art.

[0010] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0011] A detection box for odor detection, comprising a box body, a gas pump, a first drying device, a gas detection instrument and an electric control device are arranged in the box body; the gas outlet of the gas pump is connected to the gas inlet of the gas detection instrument through a main inlet pipe; the electric control device is electrically connected to the gas pump and the gas detection instrument respectively;

[0012] The gas outlet of the gas pump is also connected to the gas detection instrument through a branch inlet pipe, and the branch inlet pipe is provided with the first drying device;

[0013] The gas outlet of the gas detection instrument is also connected to the outside of the box through a second drying device.

[0014] Preferably, the first drying device comprises an adsorption type drying filter, a refrigeration type drying filter, a membrane type dryer, an electronic drainage filter and the like.

[0015] Preferably, the bottom of the gas detection instrument is also provided with a hose for drainage, the hose is arranged in a U shape below the condenser pipe, the hose is connected to the outside of the detection box through the wall of the box body, and the hose is also fixed to the box body through a fixing clamp.

[0016] Further, the main inlet pipe is provided with a moisture detector and a first switch, and the branch inlet pipe is provided with a second switch.

[0017] Further, the gas outlet of the gas detection instrument is also connected to the outside of the box through a main outlet pipe, the main outlet pipe is provided with a second drying device, and the main outlet pipe is provided with a third switch.

[0018] Further, the gas outlet of the gas detection instrument is also connected to the outside of the box through a branch outlet pipe, and the branch outlet pipe is provided with a fourth switch.

[0019] Further, the gas detection instrument is also electrically connected with a monitoring device; the monitoring device comprises a comparison system, an early warning bell and an alarm lamp, and the comparison system is electrically connected to the gas detection instrument, the early warning bell and the alarm lamp respectively.

[0020] Preferably, the electric control device comprises a knife switch, an air switch for overcurrent protection, a circuit breaker for overload protection and a terminal block connected in sequence through wires; the terminal block is also connected to the gas pump and the gas detection instrument through wires.

[0021] Preferably, the circuit breaker is connected to a plurality of terminals at one end of the terminal block through wires.

[0022] Preferably, the circuit breaker is connected to a plurality of terminals at one end of the terminal block through a zero line and a live line.

[0023] Preferably, the box body, the gas pump and the gas detection instrument are connected to the grounding terminal of the knife switch through wires.

[0024] Preferably, the knife switch, air switch, circuit breaker and terminal block are fixedly connected to the inner cavity of the box through the electrical track.

[0025] Preferably, the box is further provided with a box door and a handle; the box door is connected to the box through a bearing, and the handle is arranged on the top of the box.

[0026] Compared with the prior art, the beneficial effects of the technical scheme of the utility model are:

[0027] ①When the detection is completed, the gas pump is connected to the branch pipe, so that the dry gas from the first drying device flows into the gas detection instrument, the probe of the gas detection instrument is dried, and the residual water vapor after detection is avoided, so that the accuracy of the gas detection instrument is affected.

[0028] ②When the detection is completed, the gas pump can also be connected to the gas detection instrument in reverse, so that the gas pump is connected to the branch pipe in reverse, the dry gas from the first drying device flows into the gas detection instrument, the probe of the gas detection instrument is dried, and the water droplets on the surface of the probe are avoided when the detection is performed again, so that the service life of the gas detection instrument is affected.

[0029] ③When the gas detection instrument is detected, the condensed water at the bottom of the gas detection instrument enters the bottom of the gas storage tank and flows out through the hose, which can effectively avoid the condensation of water vapor on the probe of the gas detection instrument, further avoid the corrosion of toxic gas dissolved in water on the probe of the gas detection instrument, shorten the service life of the gas detection instrument, and improve the detection accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is an external schematic view of the box of the detection box for odor detection;

[0031] Figure 2 It is a sectional view of the inside of the box of the detection box for odor detection;

[0032] Figure 3 It is an enlarged schematic view of part A;

[0033] Figure 4 It is an enlarged schematic view of part B;

[0034] Figure 5 It is a sectional view of the inside of the box of example 3;

[0035] Figure 6 It is a rear view of the detection box for odor detection;

[0036] Figure 7 It is a side view of the detection box for odor detection;

[0037] Figure 8A plan view of a detection box for odor detection.

[0038] wherein,

[0039] 1. a box; 101, a box door; 102, a handle; 103, a pull handle;

[0040] 2. a gas pump;

[0041] 3. a first drying device;

[0042] 4. a gas detection instrument;

[0043] 5. an electric control device; 501, a knife switch; 502, an air switch; 503, a circuit breaker; 504, a terminal block;

[0044] 6. a main inlet pipe;

[0045] 7. a branch inlet pipe;

[0046] 8. a second drying device;

[0047] 9. a moisture detector;

[0048] 10. a first switch;

[0049] 11. a second switch;

[0050] 12. a main outlet pipe;

[0051] 13. a third switch;

[0052] 14. a branch outlet pipe;

[0053] 15. a fourth switch;

[0054] 16. a monitoring device;

[0055] 17. an electrical track;

[0056] 18. an exhaust pipe. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the described embodiments, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0058] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0059] Example 1

[0060] like Figures 1-4 As shown, this embodiment discloses a detection box for odor detection, including a box body 1. The box body 1 is equipped with an air pump 2, a first drying device 3, a gas detection instrument 4, and an electrical control device 5. The air outlet of the air pump 2 is connected to the air inlet of the gas detection instrument 4 through a main inlet pipe 6. The electrical control device 5 is electrically connected to the air pump 2 and the gas detection instrument 4 respectively.

[0061] The outlet of the air pump 2 is also connected to the gas detection instrument 4 through the branch inlet pipe 7, and the branch inlet pipe 7 is equipped with a first drying device 3;

[0062] The outlet of the gas detection instrument 4 is also connected to the outside of the box through the second drying device 8.

[0063] During operation, turn on the air pump 2 to allow the odorous gas to flow into the gas detection instrument 4 through the main inlet pipe 6 for odor detection;

[0064] After the test is completed, close the main inlet pipe 6 and connect the air pump 2 to the branch inlet pipe 7 so that the dried gas from the first drying device 3 flows into the gas detector 4, so that the probe of the gas detector 4 is dried to avoid residual water vapor after the test, which would affect the accuracy of the gas detector.

[0065] Preferably, after the test is completed, the air pump 2 can be reversed and connected to the gas detector 4, so that the air pump 2 is connected to the inlet pipe 7 in reverse, and fresh air flows into the gas detector 4, blowing away the water vapor inside the gas detector 4 and the pipe, so as to prevent the odor from dissolving in the water droplets on the probe surface during the next test, thereby affecting the service life of the gas detector. This also prevents the probe of the gas detector 4 from coming into contact with high concentrations of odor during this period, thus extending the service life of the gas detector 4.

[0066] As a specific embodiment, the main inlet pipe 6 is provided with a water detector 9 and a first switch 10, the branch inlet pipe 7 is provided with a second switch 11,

[0067] The gas detection instrument 4 is also connected to the outside of the box through a main outlet pipe 12, and the second drying device 8 is arranged on the main outlet pipe 12; the third switch 13 is arranged on the main outlet pipe 12.

[0068] The gas detection instrument 4 is also connected to the outside of the box through a branch outlet pipe 14, and the fourth switch 15 is arranged on the branch outlet pipe 14.

[0069] Specifically, when the gas pump 2 is started to detect, the first switch 10 and the fourth switch 15 are opened, so that the odor gas flows into the gas detection instrument 4 through the main inlet pipe 6 for odor detection, and then is discharged through the branch outlet pipe 14; after the detection is completed, the first switch 10 and the fourth switch 15 are closed, and the second switch 11 is opened, so that the gas pump 2 is connected to the branch inlet pipe 7, and the dry gas from the first drying device 3 in the branch inlet pipe 7 flows into the gas detection instrument 4, so that the probe of the gas detection instrument 4 is dried, thereby reducing the humidity of the gas, ensuring that the dryness of the probe of the gas detection instrument 4 meets the high standard requirement, and avoiding that the residual water vapor after detection affects the accuracy of the gas detection instrument.

[0070] When it is needed to reversely connect the gas pump 2 to the gas detection instrument 4, the second switch 11 and the third switch 13 are opened, so that the gas pump 2 reversely sucks the gas into the branch inlet pipe 7, and the fresh dry gas from the first drying device 3 flows into the gas detection instrument 4, thereby blowing away the water vapor in the gas detection instrument 4 and the pipeline, avoiding that the odor gas is dissolved in the water droplets on the surface of the probe during the next detection, thereby affecting the service life of the gas detection instrument, and prolonging the service life of the probe of the gas detection instrument 4.

[0071] Specifically, the water detector 9 is electrically connected to the first switch 10, and when the water detector 9 detects that the water content of the main inlet pipe 6 exceeds the standard, the first switch 10 is automatically controlled to be closed, so that too much water vapor is prevented from entering the gas detection instrument 4, thereby affecting the accuracy of the gas detection instrument 4, and a bell alarm is triggered to remind the maintenance personnel of too much water vapor in the odor gas.

[0072] As a specific embodiment, the gas detection instrument 4 is also connected to a monitoring device 16; the monitoring device 16 includes a comparison system, a pre-warning bell and an alarm lamp, and the comparison system is electrically connected to the gas detection instrument 4, the pre-warning bell and the alarm lamp.

[0073] Specifically, to more accurately detect the concentration of odorous gases, a monitoring device 16 is electrically connected to the gas detector 4. The monitoring device 16 includes a comparison system for comparing and calculating gas concentration data, a warning bell, and an alarm light. When the gas to be detected enters the gas detector 4, the gas detector 4 detects the concentration of the entering gas, and the detected data is communicated to the comparison system of the monitoring device 16 via an electrical connection. The comparison system compares the measured data with its set value. When the detected data is lower than the set value, it communicates to the warning bell and alarm light, and the warning bell sounds an alarm and the alarm light flashes, prompting the measurement personnel to patrol and move away safely, which can effectively improve the accuracy and safety of gas concentration detection.

[0074] Example 2

[0075] like Figures 1-4 As shown, this embodiment discloses a detection box for odor detection, including a box body 1. The box body 1 is equipped with an air pump 2, a first drying device 3, a gas detection instrument 4, and an electrical control device 5. The air outlet of the air pump 2 is connected to the air inlet of the gas detection instrument 4 through a main inlet pipe 6. The electrical control device 5 is electrically connected to the air pump 2 and the gas detection instrument 4 respectively.

[0076] The outlet of the air pump 2 is also connected to the gas detection instrument 4 through the branch inlet pipe 7, and the branch inlet pipe 7 is equipped with a first drying device 3;

[0077] The outlet of the gas detection instrument 4 is also connected to the outside of the box through the second drying device 8.

[0078] In one specific implementation, the electrical control device 5 includes a knife switch 501, an air switch 502 for overcurrent protection, a circuit breaker 503 for overload protection, and a terminal block 504 connected in sequence by wires; one end of the knife switch 501 is also connected to an external circuit; the terminal block 504 is also connected to the air pump 2 and the gas detection instrument 4 by wires respectively.

[0079] The circuit breaker 503 is connected to multiple terminals at one end of the terminal block 504 via wires.

[0080] The housing 1, the air pump 2, and the gas detection instrument 4 are respectively connected to the grounding terminal of the knife switch 501 via wires;

[0081] Knife switch 501, air switch 502, circuit breaker 503 and terminal block 504 are all fixedly connected to the inner cavity of the box 1 via electrical rail 17.

[0082] Specifically, when the concentration of odor needs to be detected by the gas detection instrument 4, in order to avoid the leakage of the connecting parts for measurement of the gas detection box during work; the circuit is connected to each connecting measurement part in the gas detection box through the knife switch 501; if necessary, the monitoring device 16 is also electrically connected to the knife switch 501; when the data detected by the monitoring device 16 is lower than the set value, the knife switch 501 is controlled to be disconnected through electrical connection, so that the air pump 2 stops transporting the odor to be detected, thereby avoiding the influence of high odor concentration on the safety of the measurement personnel; if necessary, the knife switch 501 can also be manually disconnected, and the air pump 2 can also stop working, thereby stopping the transportation of odor.

[0083] When the concentration of odor needs to be detected by the gas detection instrument 4, in order to avoid the leakage of the connecting parts for measurement of the gas detection box during work; the circuit is connected to each connecting measurement part in the gas detection box through the knife switch 501; if necessary, the monitoring device 16 is also electrically connected to the knife switch 501; when the data detected by the monitoring device 16 is lower than the set value, the knife switch 501 is controlled to be disconnected through electrical connection, so that the air pump 2 stops transporting the odor to be detected, thereby avoiding the influence of high odor concentration on the safety of the measurement personnel; if necessary, the knife switch 501 can also be manually disconnected, and the air pump 2 can also stop working, thereby stopping the transportation of odor.

[0084] The box body 1, the air pump 2 and the gas detection instrument 4 are respectively connected to the ground terminal of the knife switch 501 through the wire, which can be connected to the ground wire, so that the electric charge of the box body 1, the air pump 2 and the gas detection instrument 4 can be guided to the ground, thereby preventing the accumulation of electric charge and electric leakage.

[0085] Embodiment 3

[0086] As a specific embodiment, as shown in Figures 1-5 The embodiment discloses a detection box for odor detection, which comprises a box body 1, wherein the box body 1 is provided with an air pump 2, a first drying device 3, a gas detection instrument 4 and an electric control device 5; the air outlet of the air pump 2 is connected to the gas inlet of the gas detection instrument 4 through a main inlet pipe 6; the electric control device 5 is electrically connected to the air pump 2 and the gas detection instrument 4 respectively;

[0087] The air outlet of the air pump 2 is also connected to the gas detection instrument 4 through a branch inlet pipe 7, and the branch inlet pipe 7 is provided with the first drying device 3;

[0088] The gas detecting instrument 4 is also connected with the outside of the box through the exhaust pipe 18, and the second drying device 8 is arranged in the exhaust pipe 18.

[0089] As a specific embodiment, the box body 1 is further provided with a box door 101 and a handle 102; the box door 101 is connected to the box body 1 through a bearing, and the handle 102 is arranged on the top of the box body 1.

[0090] Specifically, the box door 101 can be easily opened by pulling the handle 103 to check the inside of the box body 1, and the key components such as the gas detecting instrument 4 and the gas pump connecting pipeline can be regularly checked, maintained or replaced without disassembling the whole box structure, so that time is saved and the maintenance difficulty is reduced.

[0091] The handle 102 is arranged on the top of the box body 1, so as to facilitate the user to lift and carry the gas detecting box with one hand or two hands. Whether the gas detecting box needs to be frequently transferred in the field detection or in the storage and transportation process, the handle 102 can significantly improve the portability of the equipment and reduce the physical burden of the operator.

[0092] Working principle

[0093] In the working process, the gas pump 2 is started to make the odor flow into the gas detecting instrument 4 through the main inlet pipe 6 for odor detection.

[0094] When the detection is completed, the main inlet pipe 6 is closed, the gas pump 2 is connected with the branch inlet pipe 7, the dry gas from the first drying device 3 flows into the gas detecting instrument 4, and the probe of the gas detecting instrument 4 is subjected to the drying treatment, so as to avoid the residual water vapor after detection to affect the accuracy of the gas detecting instrument.

[0095] When the detection is completed, the gas pump 2 can also be reversely connected with the gas detecting instrument 4, so that the gas pump 2 reversely connects with the branch inlet pipe 7, the fresh air flows into the gas detecting instrument 4, and the water vapor in the gas detecting instrument 4 and the pipeline is blown away, so as to avoid that the odor is dissolved in the water droplets on the surface of the probe in the next detection, thereby affecting the service life of the gas detecting instrument. In this way, the probe of the gas detecting instrument 4 does not contact the high-concentration odor during the period, and the service life of the gas detecting instrument 4 is prolonged.

[0096] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A detection cabinet for odour detection, comprising a cabinet (1), characterised in that, The box (1) is internally provided with a gas pump (2), a first drying device (3), a gas detection instrument (4) and an electric control device (5); the gas outlet of the gas pump (2) is communicated with the gas inlet of the gas detection instrument (4) through a main inlet pipe (6); the electric control device (5) is electrically connected to the gas pump (2) and the gas detection instrument (4) respectively; The gas outlet of the gas pump (2) is also communicated with the gas detection instrument (4) through a branch inlet pipe (7), and the branch inlet pipe (7) is provided with the first drying device (3); The gas outlet of the gas detection instrument (4) is also communicated with the outside of the box through a second drying device (8).

2. The detection box for odor detection according to claim 1, characterized in that, The main inlet pipe (6) is provided with a moisture detector (9) and a first switch (10), and the branch inlet pipe (7) is provided with a second switch (11).

3. The detection box for odor detection according to claim 1, wherein, The gas outlet of the gas detection instrument (4) is also communicated with the outside of the box through a main outlet pipe (12), and the main outlet pipe (12) is provided with the second drying device (8); the main outlet pipe (12) is provided with a third switch (13).

4. The detection box for odor detection according to claim 1, wherein, The gas outlet of the gas detection instrument (4) is also communicated with the outside of the box through a branch outlet pipe (14), and the branch outlet pipe (14) is provided with a fourth switch (15).

5. The detection box for odor detection according to claim 1, wherein, The gas detection instrument (4) is also electrically connected with a monitoring device (16); the monitoring device (16) comprises a comparison system, a pre-warning bell and an alarm lamp, and the comparison system is electrically connected to the gas detection instrument (4), the pre-warning bell and the alarm lamp respectively.

6. The detection box for odor detection according to claim 1, wherein, The box (1) is also provided with a box door (101) and a handle (102); the box door (101) is connected to the box (1) through a bearing, and the handle (102) is arranged on the top of the box (1).

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