Explosion-proof online foul smell detection device for petrochemical park

Abstract

The utility model discloses an explosion-proof petrochemical park stink on-line detection device which comprises an explosion-proof shell and an impact type filter, a connecting hole is formed in the top of the explosion-proof shell, the impact type filter is formed by assembling a top cover, a first screen box, at least one second screen box, a third screen box and a bottom box from top to bottom, an air inlet is formed in the top cover, and an air outlet is formed in the bottom box. Particulate matter adsorption units are placed on the second screen box and the third screen box, and an air outlet pipe joint is arranged at the bottom of the bottom box and installed on the connecting hole. According to the explosion-proof online foul smell detection device for the petrochemical park, tiny microorganisms and particulate matters in air can be quickly filtered by arranging the impact type filter, and compared with a traditional air filter, the explosion-proof online foul smell detection device is more efficient; meanwhile, the filtered microorganisms and particulate matters can also be used for analyzing and detecting the microorganisms and the particulate matters; according to the sampling environment and requirements, the filtering time and the air flow can be adjusted more flexibly.

Description

Technical Field

[0001] The utility model belongs to the technical field of environmental detection, and relates to a malodorous gas detection device in a petrochemical park, and specifically relates to an explosion-proof petrochemical park malodor online detection device. Background Art

[0002] Bad odor is a general term for various smells (peculiar smells). Peculiar smells in the atmosphere, water, and waste are perceived by people through the air medium and their sense of smell.

[0003] Judging from the composition of substances produced by odor pollution in petrochemical parks, oil refining is the main cause of odor pollution. Crude oil itself is a high-sulfur substance. During the oil refining process, crude oil undergoes heating, pressurization, catalysis and other processing procedures, which will produce toxic and harmful substances.

[0004] Among them, hydrogen sulfide, various low molecular weight mercaptans and sulfides have a greater impact on odor pollution and are widely distributed throughout the entire oil refining process. Even if they can be treated, they will continue to move under the influence of the atmospheric environment and working conditions and cause pollution to the environment. Based on the impact of odor pollution on the surrounding environment and human health, the current method mainly adopts the method of monitoring the odor intensity of the environment to find out the source of odor pollution as soon as possible, so as to take targeted measures to prevent and control odor pollution.

[0005] Since manual detection cannot achieve real-time monitoring, online odor monitoring facilities are the only option.

[0006] However, since the project is located in an explosion-hazardous area, sample collection and analysis are often required to provide early feedback on pollutant concentrations. During the use of online equipment, the tiny energy released by sample collectors, data analyzers, etc. may have an impact on the explosive environment and may even cause an explosion, so this needs to be avoided.

[0007] In the prior art, there is an explosion-proof environment total suspended particulate matter concentration monitoring device (CN217845994U), which is composed of a box, an intrinsically safe power supply, an explosion-proof chamber, a particle sensor, an explosion-proof gas chamber, a particle sampling channel and a micro diaphragm pump. The device has an explosion-proof effect, but its monitoring object is total suspended particulate matter, and it cannot be used for online detection of odor. Utility Model Content

[0008] In view of this, the purpose of the utility model is to provide an explosion-proof device for online detection of odor in a petrochemical park.

[0009] The inventor has continuously improved and innovated through long-term exploration and attempts, as well as multiple experiments and efforts. In order to solve the above technical problems, the technical solution provided by the utility model is to provide an explosion-proof petrochemical park odor online detection device, including an explosion-proof shell and an impact filter, the top of the explosion-proof shell is provided with a connecting hole, the impact filter is assembled from a top cover, a first sieve box, at least one second sieve box, a third sieve box and a bottom box from top to bottom, the top cover is provided with an air inlet, the second sieve box and the third sieve box are placed with a particle adsorption unit, the bottom of the bottom box is provided with an outlet pipe section, and the outlet pipe section is installed on the connecting hole.

[0010] According to an embodiment of the explosion-proof petrochemical park odor online detection device of the utility model, the explosion-proof housing is composed of a box body and a side cover, the side of the box body is open, and the side cover is arranged on the opening; the side cover is provided with an observation window.

[0011] According to an embodiment of the explosion-proof petrochemical park odor online detection device of the utility model, an intrinsically safe power supply, a flameproof chamber, an odor sensor, an explosion-proof gas chamber, an odor sampling channel and an air pump are installed in the box.

[0012] According to an embodiment of the explosion-proof petrochemical park odor online detection device of the utility model, the first sieve box is composed of a first outer cylinder, a first inner cylinder, a first top ring and a first sieve plate, the top of the first outer cylinder is connected to the outer circle of the first top ring, the top of the first inner cylinder is connected to the inner circle of the first top ring, and the bottom of the first inner cylinder is connected to the first sieve plate; the top cover is detachably connected to the first inner cylinder.

[0013] According to an embodiment of the explosion-proof petrochemical park odor online detection device of the utility model, a first connecting portion is provided on the upper surface of the first top ring.

[0014] According to an embodiment of the explosion-proof petrochemical park odor online detection device of the utility model, the second sieve box is composed of a second outer cylinder, a second inner cylinder, a second top ring and a second sieve plate, the top of the second outer cylinder is connected to the outer circle of the second top ring, the top of the second inner cylinder is connected to the inner circle of the second top ring, and the bottom of the second inner cylinder is connected to the second sieve plate; a plurality of second positioning blocks are arranged on the second top ring, a second adsorption dish is placed on the second positioning block, and a gap is left between the bottom of the second adsorption dish and the second top ring.

[0015] According to an embodiment of the explosion-proof petrochemical park odor online detection device of the utility model, the third sieve box is composed of a third outer cylinder, a third inner cylinder, a third top ring and a third sieve plate, the top of the third outer cylinder is connected to the outer circle of the third top ring, the top of the third inner cylinder is connected to the inner circle of the third top ring, and the bottom of the third inner cylinder is connected to the third sieve plate; a plurality of third positioning blocks are arranged on the third top ring, a third adsorption dish is placed on the third positioning block, and a gap is left between the bottom of the third adsorption dish and the third top ring.

[0016] According to an embodiment of the explosion-proof petrochemical park odor online detection device of the utility model, a third connecting portion is provided on the third outer cylinder.

[0017] According to an embodiment of the explosion-proof petrochemical park odor online detection device of the utility model, a dehumidification chamber is arranged in the bottom box, and the dehumidification chamber is filled with a desiccant.

[0018] According to an embodiment of the explosion-proof petrochemical park odor online detection device of the utility model, the desiccant is one or more of molecular sieves, silica gel, alumina, calcium silicate, and zeolite.

[0019] According to an embodiment of the explosion-proof petrochemical park odor online detection device of the utility model, the capture liquid is one of pure water, physiological saline, and phosphate buffer.

[0020] Compared with the prior art, one of the above technical solutions has the following advantages:

[0021] a) The utility model explosion-proof petrochemical park odor online detection device can quickly filter tiny microorganisms and particulate matter in the air by setting an impact filter, which is more efficient than traditional air filters; at the same time, the filtered microorganisms and particulate matter can also be used for microbial and particulate matter analysis and detection; according to the sampling environment and needs, the filtering time and air flow can be adjusted more flexibly.

[0022] b) In one embodiment of the utility model explosion-proof petrochemical park odor online detection device, the number of second sieve boxes can be selected according to environmental conditions to ensure that there is no microbial and particulate interference in the gas discharged from the outlet pipe section, so as to facilitate odor analysis and detection. Compared with traditional air filters, impact filters have lower maintenance frequency and longer detection cycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a front structural schematic diagram of a preferred embodiment of the utility model explosion-proof petrochemical park odor online detection device.

[0025] Figure 2 yes Figure 1 Schematic diagram of the right view structure.

[0026] Figure 3 yes Figure 1 Schematic diagram of the top view structure.

[0027] Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure.

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of an explosion-proof housing in an explosion-proof petrochemical park odor online detection device of the utility model.

[0029] Figure 6 It is a schematic diagram of the front structure of an impact filter in one embodiment of the utility model explosion-proof petrochemical park odor online detection device.

[0030] Figure 7 yes Figure 6 AA section diagram.

[0031] Figure 8 yes Figure 6 3D explosion structure diagram.

[0032] The marks in the figure are:

[0033] 100 explosion-proof housing,

[0034] 110 cabinet,

[0035] 111 mounting bracket,

[0036] 112 connection holes,

[0037] 120 side cover,

[0038] 121 observation window,

[0039] 200 impact filter,

[0040] 210 top cover,

[0041] 211 air intake,

[0042] 220 first screen box,

[0043] 221 first outer cylinder,

[0044] 222 first inner cylinder,

[0045] 223 first top ring,

[0046] 224 first screen plate,

[0047] 225 first connection portion,

[0048] 230 second sieve box,

[0049] 231 second outer cylinder,

[0050] 232 second inner cylinder,

[0051] 233 second top ring,

[0052] 234 second sieve plate,

[0053] 235 The second adsorption dish,

[0054] 236 second positioning block,

[0055] 240 third sieve box,

[0056] 241 the third outer cylinder,

[0057] 242 third inner cylinder,

[0058] 243 The third top ring,

[0059] 244 third sieve plate,

[0060] 245 The third adsorption dish,

[0061] 246 The third positioning block,

[0062] 247 third connection part,

[0063] 250 base box,

[0064] 251 Dehumidification Chamber,

[0065] 253 desiccant,

[0066] 252 tracheal segment. DETAILED DESCRIPTION

[0067] The following is a description with reference to the accompanying drawings and a specific embodiment.

[0068] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0069] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in the subsequent drawings.

[0070] See also Figures 1 to 8 . The explosion-proof petrochemical park odor online detection device described in this embodiment includes an explosion-proof housing 100. The explosion-proof housing 100 is composed of a box body 110 and a side cover 120. The side of the box body 110 is opened, and the side cover 120 is covered on the opening; the side cover 120 is provided with an observation window 121. This embodiment shows a situation where the box body 110 and the side cover 120 are connected by bolts. A mounting bracket 111 is provided on the back of the box body 110, and the box body 110 is fixedly mounted on the attachment through the mounting bracket 111.

[0071] The box 110 is equipped with an intrinsically safe power supply, an explosion-proof chamber, an odor sensor, an explosion-proof gas chamber, an odor sampling channel and an air pump. The principle of explosion-proof technology is the same as that of the explosion-proof environment total suspended particulate matter concentration monitoring device, but the difference is that the object detected in this embodiment is odorous gas, mainly odor, hydrogen sulfide, ammonia, organic compounds, etc. Therefore, the detection equipment of this embodiment uses an odor sensor instead of a particle sensor. The odor sampling channel is connected to the air outlet of the impact filter 200, that is, the odor sampling channel is connected to the outlet pipe section 252. The gas filtered by the impact filter 200 collects odor information through the odor sensor under the action of the air pump.

[0072] Due to the different analysis objects, the object detected by the explosion-proof petrochemical park odor online detection device in this embodiment is odorous gas. Therefore, it is necessary to eliminate the interference of microorganisms and gas particles on the detection results, and then the gas to be detected needs to be filtered. In the prior art, air filtration mainly uses air purifiers. The filter material in the air purifier may have a good adsorption effect on certain odorous gases, resulting in inaccurate detection results; the air purifier has limited filtering capacity and cannot completely remove interfering substances; the filter element needs to be replaced regularly, and the maintenance cost is high; the air purifier equipment is large, not portable, and not convenient for matching with the explosion-proof housing 100 structure.

[0073] Based on this, this embodiment proposes an impact filter 200, see Figures 6 to 8 The impact filter 200 is assembled from top to bottom by a top cover 210, a first screen box 220, at least one second screen box 230, a third screen box 240 and a bottom box 250. The top cover 210 is provided with an air inlet 211, the second screen box 230 and the third screen box 240 are provided with a particle adsorption unit, and the bottom of the bottom box 250 is provided with an air outlet pipe section 252.

[0074] The top of the explosion-proof housing 100 is provided with a connection hole 112, and the air outlet pipe segment 252 is detachably mounted on the connection hole 112, that is, the impact filter 200 is detachably mounted on the top of the explosion-proof housing 100. The connection between the air outlet pipe segment 252 and the connection hole 112 can be a bayonet connection, or a threaded connection, or any connection structure in the prior art that can fix the impact filter 200 on the explosion-proof housing 100.

[0075] The odor enters the impact filter 200 from the air inlet 211, passes through the first sieve box 220, at least one second sieve box 230, the third sieve box 240, the bottom box 250, and finally flows out from the outlet pipe section 252 and enters the odor sampling channel for detection. The impact filter 200 is used to filter microorganisms and particulate matter in the air. No additional power is required. The odor can flow in the impact filter 200 only under the action of the air pump.

[0076] See also Figure 7 and Figure 8 The first sieve box 220 is composed of a first outer cylinder 221, a first inner cylinder 222, a first top ring 223 and a first sieve plate 224. The top of the first outer cylinder 221 is connected to the outer circle of the first top ring 223, the top of the first inner cylinder 222 is connected to the inner circle of the first top ring 223, and the bottom of the first inner cylinder 222 is connected to the first sieve plate 224; the top cover 210 is detachably connected to the first inner cylinder 222.

[0077] In an optional embodiment, a first connecting portion 225 is disposed on the upper surface of the first top ring 223 .

[0078] The first outer cylinder 221 , the first inner cylinder 222 , and the first top ring 223 form a first annular cavity that opens downwards. During the filtering process, the upper part of the side wall of the second adsorption dish 235 is located in the first annular cavity. The first sieve plate 224 extends into the second adsorption dish 235 .

[0079] The second adsorption dish 235 is a particle adsorption unit, which is used to adsorb tiny microorganisms and particles in the airflow. The second adsorption dish 235 contains a microorganism and particle capture liquid, which is one of pure water, physiological saline, and phosphate buffer. Of course, it can also be any solution in the prior art that can adsorb microorganisms and particles and has low or zero solubility in malodorous gases. The utility model does not make any improvement on the composition of the capture liquid, and only needs to make a conventional selection in the prior art.

[0080] The second sieve box 230 is composed of a second outer cylinder 231, a second inner cylinder 232, a second top ring 233 and a second sieve plate 234. The top of the second outer cylinder 231 is connected to the outer circle of the second top ring 233, the top of the second inner cylinder 232 is connected to the inner circle of the second top ring 233, and the bottom of the second inner cylinder 232 is connected to the second sieve plate 234; a plurality of second positioning blocks 236 are arranged on the second top ring 233, a second adsorption dish 235 is placed on the second positioning blocks 236, and a gap is left between the bottom of the second adsorption dish 235 and the second top ring 233 to ensure that airflow can pass through.

[0081] The number of the second sieve box 230 is at least one. Figures 6 to 8 The figure shows a second screen box 230. Figures 1-2 , Figure 4 The figure shows a situation where there are four second sieve boxes 230. The more second sieve boxes 230 there are, the more second adsorption dishes 235 can be placed, and the better the effect of capturing microorganisms and particulate matter in the air.

[0082] When a plurality of second sieve boxes 230 are used, the plurality of second sieve boxes 230 are stacked. The second sieve plate 234 of the upper second sieve box 230 extends into the interior of the second adsorption dish 235 placed on the lower second sieve box 230 .

[0083] The second sieve box 230 on the top layer is connected to the first sieve box 220. The connection method can be a bayonet connection or a threaded connection, and other auxiliary parts can also be used for assembly and fixation. For example, a first connecting portion 225 is provided on the upper surface of the first top ring 223, and the first connecting portion 225 is provided as a blind hole. One end of a spring is connected to the explosion-proof housing 100 or the third sieve plate 240 or the bottom box 250, and the other end of the spring is connected to a hook, which is detachably hung on the first connecting portion 225. The second sieve box 230 is connected and fixed to the first sieve box 220, and the second sieve box 230 is connected and fixed to another second sieve box 230 through the tension of the spring.

[0084] The second outer cylinder 231, the second inner cylinder 232, and the second top ring 233 form a second annular cavity that opens downward, and the upper end of the side wall of the third adsorption dish 245 is located in the second annular cavity. The third adsorption dish 245 is a particle adsorption unit, which is used to adsorb tiny microorganisms and particles in the airflow. The third adsorption dish 245 is filled with a microorganism and particle capture liquid, and the capture liquid is one of pure water, physiological saline, and phosphate buffer. Of course, it can also be any solution in the prior art that can adsorb microorganisms and particles and has low solubility or zero solubility in malodorous gases. The utility model does not make any improvement to the composition of the capture liquid, and only needs to make conventional selections in the prior art.

[0085] The third sieve box 240 is composed of a third outer cylinder 241, a third inner cylinder 242, a third top ring 243 and a third sieve plate 244. The top of the third outer cylinder 241 is connected to the outer circle of the third top ring 243, the top of the third inner cylinder 242 is connected to the inner circle of the third top ring 243, and the bottom of the third inner cylinder 242 is connected to the third sieve plate 244; a plurality of third positioning blocks 246 are arranged on the third top ring 243, a third adsorption dish 245 is placed on the third positioning block 246, and a gap is left between the bottom of the third adsorption dish 245 and the third top ring 243 to ensure that airflow can pass through.

[0086] In an optional embodiment, a third connecting portion 247 is provided on the third outer cylinder 241. For example, the third connecting portion 247 is a connecting column, the connecting column is connected to one end of the spring, the other end of the spring is connected to the hook, and the hook is connected to the first connecting portion 225.

[0087] The first sieve box 220 and the second sieve box 230 , the upper second sieve box 230 and the lower second sieve box 230 , and the second sieve box 230 and the third sieve box 240 are connected in the same manner.

[0088] A bottom box 250 is provided below the third sieve box 240. A dehumidification chamber 251 is provided in the bottom box 250, and a desiccant 253 is filled in the desiccant 251. The desiccant 253 is one or more of molecular sieve, silica gel, alumina, calcium silicate, and zeolite. When multiple desiccants are used, various desiccants are arranged in layers. The utility model does not adjust the ingredients and components of the desiccant, and only needs to select existing materials in the prior art that absorb water but do not absorb or absorb very little odorous gas.

[0089] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0090] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0091] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0092] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0093] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention. The protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An explosion-proof petrochemical park odor online detection device, characterized in that: It includes an explosion-proof shell and an impact filter. A connecting hole is arranged on the top of the explosion-proof shell. The impact filter is assembled from a top cover, a first screen box, at least one second screen box, a third screen box and a bottom box from top to bottom. An air inlet is arranged on the top cover. Particulate adsorption units are placed on the second screen box and the third screen box. An air outlet pipe section is arranged at the bottom of the bottom box, and the air outlet pipe section is installed on the connecting hole.

2. The explosion-proof petrochemical park odor online detection device according to claim 1 is characterized in that: The explosion-proof housing is composed of a box body and a side cover. The side of the box body is open, and the side cover is arranged on the opening; the side cover is provided with an observation window.

3. The explosion-proof petrochemical park odor online detection device according to claim 2 is characterized in that: An intrinsically safe power supply, a flameproof chamber, a malodor sensor, an explosion-proof gas chamber, a malodor sampling channel and an air pump are installed in the box.

4. The explosion-proof petrochemical park odor online detection device according to claim 1 is characterized in that: The first screen box is composed of a first outer cylinder, a first inner cylinder, a first top ring and a first screen plate. The top of the first outer cylinder is connected to the outer circle of the first top ring, the top of the first inner cylinder is connected to the inner circle of the first top ring, and the bottom of the first inner cylinder is connected to the first screen plate; the top cover is detachably connected to the first inner cylinder.

5. The explosion-proof petrochemical park odor online detection device according to claim 4 is characterized in that: A first connecting portion is disposed on the upper surface of the first top ring.

6. The explosion-proof petrochemical park odor online detection device according to claim 4 is characterized in that: The second sieve box is composed of a second outer cylinder, a second inner cylinder, a second top ring and a second sieve plate. The top of the second outer cylinder is connected to the outer circle of the second top ring, the top of the second inner cylinder is connected to the inner circle of the second top ring, and the bottom of the second inner cylinder is connected to the second sieve plate; a plurality of second positioning blocks are arranged on the second top ring, a second adsorption dish is placed on the second positioning blocks, and a gap is left between the bottom of the second adsorption dish and the second top ring; the second adsorption dish is filled with a microorganism and particle capture liquid.

7. The explosion-proof petrochemical park odor online detection device according to claim 6 is characterized in that: The third sieve box is composed of a third outer cylinder, a third inner cylinder, a third top ring and a third sieve plate. The top of the third outer cylinder is connected to the outer circle of the third top ring, the top of the third inner cylinder is connected to the inner circle of the third top ring, and the bottom of the third inner cylinder is connected to the third sieve plate; a plurality of third positioning blocks are arranged on the third top ring, a third adsorption dish is placed on the third positioning block, and a gap is left between the bottom of the third adsorption dish and the third top ring; the third adsorption dish is filled with a microorganism and particle capture liquid.

8. The explosion-proof petrochemical park odor online detection device according to claim 7 is characterized in that: The third outer cylinder is provided with a third connecting portion.

9. The explosion-proof petrochemical park odor online detection device according to claim 7, characterized in that: A dehumidification chamber is arranged in the bottom box, and the dehumidification chamber is filled with desiccant.

10. The explosion-proof petrochemical park odor online detection device according to claim 9, characterized in that: The desiccant is one of molecular sieve, silica gel, alumina, calcium silicate and zeolite; the capture liquid is one of pure water, physiological saline and phosphate buffer.

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