Gas monitoring device

Abstract

The utility model discloses a gas monitoring device, which relates to the technical field of pollution detection and comprises a support and a dilution probe body. The dilution probe body is arranged in a flue through a bracket; the dilution probe body comprises a sampling pipeline and a probe head; the probe head is connected with the sampling pipeline through a thread structure; the support comprises a supporting disc, a first connecting base and a second connecting base. The first connecting seat is connected with the sampling pipeline, one end of the supporting disc is fixedly connected with the first connecting seat, and the other end of the supporting disc is connected with the second connecting seat through a rotating shaft; through the combined design of the supporting disc of the support, the first connecting base and the second connecting base, stable installation of the dilution probe body is achieved, airflow impact and vibration in a flue can be effectively resisted, and the stability of long-term operation of equipment is ensured; the supporting disc is connected with the second connecting seat through the rotating shaft, so that the mounting angle of the dilution probe body is adjustable, the dilution probe body adapts to complex environments in different flues, the sampling requirements of multiple scenes are met, and the applicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pollution detection, specifically to a gas monitoring device. BACKGROUND

[0002] With the acceleration of industrial production and urbanization, flue gas discharged by industry has become an important source of air pollution. These flue gases usually contain harmful components such as sulfur dioxide (SO2), nitrogen oxides (NOx) and particulate matter, which will cause serious harm to the environment and human health if directly discharged into the atmosphere. Therefore, real-time monitoring and accurate analysis of flue gas is the key technical direction in the current environmental protection field.

[0003] Most of the existing flue gas monitoring devices use direct sampling method to transmit flue gas to analytical instruments for detection. However, due to the high temperature, high humidity and complex chemical composition of flue gas, this direct sampling method has many technical problems. On the one hand, high-temperature gas may cause irreversible damage to the sensors and other precision components in the monitoring equipment, shortening the service life of the equipment; on the other hand, the moisture and particulate matter in the flue gas can easily interfere with the detection process, resulting in data deviation. In addition, the traditional gas monitoring device is usually complex to operate during installation and maintenance, and needs to be frequently disassembled, which not only increases the equipment maintenance cost, but also easily leads to low efficiency of on-site operation.

[0004] As an important part of gas monitoring equipment, the dilution probe can effectively reduce the influence of high-concentration, high-temperature gas on the equipment and improve the measurement accuracy by diluting and multi-stage filtering the sampled gas. However, in actual application, the dilution probe needs to be stably installed, angle-adjusted and flexibly maintained in the complex environment of the flue, which puts higher requirements on the design of the support of the equipment. Some of the supports on the market are relatively simple in design, lack flexibility and adaptability, and cannot meet the installation needs of various flue environments, while the disassembly and adjustment process of the equipment is also relatively cumbersome, limiting its application scenarios. SUMMARY

[0005] The utility model provides a kind of gas monitoring device including support and dilution probe body, and by reasonable structure design, it solves the problems such as inconvenient installation, low sampling precision and complex maintenance in traditional device. The device not only has higher stability and accuracy, but also provides reliable technical support for the monitoring and analysis of flue gas, and has wide application prospect.

[0006] To achieve the above object, the utility model provides the following technical scheme: a gas monitoring device, including support and dilution probe body, the dilution probe body is set in the flue through the support, the dilution probe body includes sampling pipeline and probe head, the probe head is connected with the sampling pipeline through the screw structure, the support includes support disc, first connecting seat and second connecting seat, the first connecting seat is connected with the sampling pipeline, one end of the support disc is fixedly connected with the first connecting seat, and the other end of the support disc is connected with the second connecting seat through the pivot.

[0007] Preferably, the first connecting seat and the second connecting seat are identical in structure and include a C-shaped buckle and a C-shaped support seat, and the C-shaped buckles of the first connecting seat and the second connecting seat are connected with the connecting seat of the sampling pipeline and the inner wall of the flue, respectively.

[0008] Preferably, a measuring rod is further arranged on the support, and the measuring rod is on the same horizontal line as the sampling pipeline and located on the C-shaped support seat of the first connecting seat.

[0009] Preferably, a scale mark line is arranged on the measuring rod.

[0010] Preferably, a dilution mixing cavity is arranged at the front end of the sampling pipeline, and a flow-limiting hole that communicates with the dilution mixing cavity is arranged on the probe head.

[0011] Preferably, the sampling pipeline includes a calibration air tube, a vacuum gauge tube, a dilution air channel and a dilution sample air channel that are connected with the dilution mixing cavity in sequence.

[0012] Preferably, a quartz wool filter is arranged on the dilution mixing cavity and located at the front end of the flow-limiting hole.

[0013] Preferably, a coarse filter is arranged on the probe head and located at the inlet end of the probe head.

[0014] Preferably, the material of the sampling pipeline and the probe head is 316L stainless steel.

[0015] Compared with the prior art, the utility model has the beneficial effects that: through the combination design of the support disc, the first connecting seat and the second connecting seat of the support, the stable installation of the dilution probe body is realized, the impact of airflow and vibration in the flue can be effectively resisted, and the stability of long-term operation of the equipment is ensured.

[0016] The support disc is connected with the second connecting seat through the pivot, so that the installation angle of the dilution probe body is adjustable, thereby adapting to the complex environment inside different flues, meeting the sampling requirements of multiple scenes, and improving the applicability of the device.

[0017] The first connecting seat is in threaded connection with the sampling pipeline, facilitating quick disassembly and assembly of the dilution probe.

[0018] The bracket is composed of multiple adjustable components (such as a rotating shaft, a C-shaped buckle, etc.), which can be flexibly adapted to flues of different sizes, shapes and installation conditions, and is widely used in various industrial environments, improving the versatility of the equipment.

[0019] The dilution probe body is stably supported by the bracket, which can maintain the fixed position of the sampling port, avoid measurement errors caused by vibration or angle deviation, and improve the accuracy and reliability of gas monitoring.

[0020] The structural design of the bracket disperses the mechanical stress generated during the operation of the equipment, reducing the wear and tear of the sampling pipeline and the probe head caused by stress concentration. In addition, the support disc and the connecting seat are made of corrosion-resistant and high-temperature-resistant materials, which can adapt to the high-temperature and highly corrosive environment of the flue, significantly prolonging the service life of the equipment.

[0021] The C-shaped buckle design of the first connecting seat and the second connecting seat can quickly fix the equipment to the position to be detected, facilitating installation and disassembly. At the same time, the modular design of the bracket reduces the tools and steps required for installation.

[0022] The rotating design of the support disc and the second connecting seat allows users to easily adjust the installation angle of the dilution probe, achieving accurate positioning without complex operations, improving the convenience and efficiency of use. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0024] Figure 2 It is a schematic diagram of the dilution probe body structure of the utility model.

[0025] In the figure: 1, bracket; 11, support disc; 12, first connecting seat; 13, second connecting seat; 2, dilution probe body; 21, sampling pipeline; 22, probe head; 23, flow limiting hole; 24, calibration air pipe; 25, vacuum gauge pipe; 26, dilution air passage; 27, dilution sample gas passage; 28, quartz wool filter; 29, coarse filter; 3, measuring rod. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0027] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "vertical", "upper", "lower", "horizontal" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0029] Referring to the drawings, the present application discloses a gas monitoring device, comprising a support 1 and a dilution probe body 2; the dilution probe body 2 is arranged in the flue through the support 1.

[0030] Specifically, the support 1 comprises a supporting disc 11, a first connecting seat 12 and a second connecting seat 13; the first connecting seat 12 is connected with the sampling pipeline 21, one end of the supporting disc 11 is fixedly connected with the first connecting seat 12, and the other end of the supporting disc 11 is connected with the second connecting seat 13 through a rotating shaft; in use, the first connecting seat 12 is connected with the sampling pipeline 21, the second connecting seat 13 is fixed to the part to be detected, and the angle of the sampling pipeline 21 in the flue can be realized by rotating the supporting disc 11 relative to the second connecting seat 13. The first connecting seat 12 and the second connecting seat 13 are the same in structure, comprising a C-shaped buckle and a C-shaped supporting seat, in use, the C-shaped buckles of the first connecting seat 12 and the second connecting seat 13 are respectively connected with the connecting seat of the sampling pipeline 21 and the inner wall of the flue; the C-shaped buckle and the C-shaped supporting seat facilitate quick installation and disassembly, and at the same time ensure the stability of the probe.

[0031] The support 1 is further provided with a measuring rod 3 which is on the same horizontal line with the sampling pipeline 21 and is located on the C-shaped support seat of the first connecting seat 12; the measuring rod 3 can detect the distance of the dilution probe body 2 into the flue; the measuring rod 3 is provided with a scale mark line.

[0032] The dilution probe body 2 comprises a sampling pipeline 21 and a probe head 22; the probe head 22 is connected with the sampling pipeline 21 through a threaded structure; the front end of the sampling pipeline 21 is provided with a dilution mixing cavity, and the probe head 22 is provided with the flow limiting hole 23 which is in communication with the dilution mixing cavity; the sampling pipeline 21 comprises a calibration air tube 24, a vacuum gauge tube 25, a dilution air channel 26 and a dilution sample gas channel 27 which are connected with the dilution mixing cavity; when cleaning, the flow limiting hole 23 is cleaned by using an ultrasonic cleaner, and after cleaning, whether the flow limiting hole 23 is unobstructed can be detected by using an ear cleaning ball. The optimization of the cleaning and maintenance mode greatly simplifies the maintenance steps and reduces the work burden of maintenance personnel. In use, the calibration air tube 24 is responsible for introducing standard calibration gas into the inside of the dilution mixing cavity, which is used for calibrating the dilution ratio and measurement accuracy of the dilution probe. The dilution mixing cavity is connected with a dilution module through an independent air inlet channel, and the outlet thereof is located in the dilution mixing cavity and directly communicates with the mixing area of the dilution air and the sample gas. The calibration air tube 24 is connected to an external vacuum system, which is used for forming a negative pressure environment in the dilution probe, driving the sample gas to flow into the dilution module through the probe. The calibration air tube 24 and the dilution air channel 26 share a connecting cavity, which ensures that the sampling gas flow is controlled by negative pressure. The dilution air channel 26 is used for introducing dry air or nitrogen as a dilution medium, and the flow of the dilution gas is controlled through the flow limiting hole 23. Since the dilution air channel 26 is connected with the dilution mixing cavity, the dilution air and the sample gas are fully mixed. The dilution sample gas channel 27 is used for conveying the mixed dilution gas to a downstream analysis instrument. The outlet of the dilution sample gas channel 27 is directly connected with the dilution mixing cavity, which ensures that the output gas flow is stable and meets the detection range of the analysis instrument. The flow limiting hole 23 is a key flow limiting component of the dilution probe, which is used for accurately controlling the flow of the dilution air. The flow limiting hole 23 maintains a constant dilution gas flow rate within a certain range, thereby realizing a high-precision dilution process.

[0033] A quartz wool filter 28 is arranged on the dilution mixing cavity and located at the front end of the flow limiting hole 23.

[0034] The probe head 22 is provided with a coarse filter 29; the coarse filter 29 is located at the inlet end of the probe head 22 and is used to preliminarily filter large particles in the sample gas, so as to avoid burdening the quartz wool filter 28. The coarse filter 29 is threadedly connected with the probe head 22, so as to facilitate quick dismounting and mounting; the coarse filter 29 is a stainless steel wire mesh, so as to be suitable for high-temperature and corrosive environments, be durable and easy to clean, and the aperture of the stainless steel wire mesh is 50-100 microns.

[0035] The material of the sampling pipeline 21 and the probe head 22 is 316L stainless steel material, the 316L stainless steel material can resist high temperature of 1200-1300 DEG C, and the 316L stainless steel is added with Mo element, so that the corrosion resistance and high-temperature strength of the 316L stainless steel are greatly increased.

[0036] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. The skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall into the scope of the utility model claimed for protection. The protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A gas monitoring device, characterized by, The application relates to a dilution probe for a flue gas analyzer, which comprises a support (1) and a dilution probe body (2); the dilution probe body (2) is arranged in a flue through the support (1); the dilution probe body (2) comprises a sampling pipeline (21) and a probe head (22); the probe head (22) is connected with the sampling pipeline (21) through a threaded structure; the support (1) comprises a supporting disc (11), a first connecting seat (12) and a second connecting seat (13); the first connecting seat (12) is connected with the sampling pipeline (21), one end of the supporting disc (11) is fixedly connected with the first connecting seat (12), and the other end of the supporting disc (11) is connected with the second connecting seat (13) through a rotating shaft.

2. The gas monitoring device of claim 1, wherein, The first connecting seat (12) and the second connecting seat (13) are the same in structure and comprise C-shaped buckles and C-shaped supporting seats; the C-shaped buckles of the first connecting seat (12) and the second connecting seat (13) are connected with connecting seats of the sampling pipeline (21) and the inner wall of the flue respectively.

3. The gas monitoring apparatus of claim 2, wherein A measuring rod (3) is further arranged on the support (1), the measuring rod (3) is on the same horizontal line with the sampling pipeline (21) and is located on the C-shaped supporting seat of the first connecting seat (12).

4. The gas monitoring apparatus according to claim 3, characterized by Scale marks are arranged on the measuring rod (3).

5. The gas monitoring device of claim 1, wherein, A dilution mixing cavity is arranged at the front end of the sampling pipeline (21), and a flow-limiting hole (23) in communication with the dilution mixing cavity is arranged on the probe head (22).

6. The gas monitoring apparatus of claim 5, wherein, The sampling pipeline (21) comprises a calibration air pipe (24), a vacuum gauge pipe (25), a dilution air channel (26) and a dilution sample air channel (27) which are sequentially connected with the dilution mixing cavity.

7. The gas monitoring apparatus of claim 6, wherein A quartz wool filter (28) is arranged on the dilution mixing cavity and located at the front end of the flow-limiting hole (23).

8. The gas monitoring device of claim 7, wherein, A coarse filter (29) is arranged on the probe head (22) and located at the inlet end of the probe head (22).

9. The gas monitoring device of claim 1, wherein, The material of the sampling pipeline (21) and the probe head (22) is 316L stainless steel.

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