A kind of pollution source testing equipment and testing method in petrochemical cluster area

Abstract

The invention relates to a pollution source testing device and a testing method for a petrochemical cluster area, comprising a first tube body, a second tube body, a third tube body, a first arch plate, a second arch plate and a rotating cover, wherein the head end of the first tube body is used for air intake; the second tube body is detachably mounted on the tail end of the first tube body; the third tube body is located in the second tube body, and a detector is installed in the third tube body; the first arch plate is mounted on the tail end of the first tube body, a first ventilation hole is provided on the first arch plate, the first arch plate faces the tail end of the second tube body, and when the first arch plate changes direction, the first ventilation hole is affected by the first arch plate and becomes closed; the second arch plate is mounted on the head end of the second tube body, and its direction is consistent with that of the first arch plate; one side of the rotating cover is rotatably mounted on the tail end of the third tube body, and the other side is located outside the second tube body, and when external airflow flows through the second tube body along the first tube body, the rotating cover is driven by the airflow to rotate and approach the second arch plate.

Description

Technical Field

[0001] The invention relates to the field of environmental testing equipment, and in particular to a petrochemical cluster pollution source testing device and a testing method. Background Art

[0002] Pollution sources usually refer to places, equipment and devices that discharge or release harmful substances into the environment or have harmful effects on the environment, including petrochemical production areas and related equipment. For the area where the pollution source is located, it is necessary to use testing equipment to test the soil, air, etc. in the environment, so as to detect and determine whether there is pollution in the area where the pollution source is located. The content of environmental testing mainly includes the monitoring of physical indicators, chemical indicators and ecosystems, among which air pollution is an important indicator parameter of environmental pollution. The environmental pollution testing equipment currently on the market needs to continuously extract air when testing air pollution, so the tested air is in a continuous flowing state, which may cause some errors in the test results.

[0003] In order to overcome the above problems, a chemical park environmental pollution monitoring and early warning device with patent number "CN113702578B" is provided. Through the cooperation of the first gear and the missing gear, when the first gear rotates, it can intermittently drive the missing gear to rotate, and then the missing gear drives the connecting rod to rotate, and the connecting rod drives the sleeve to rotate, so that the sleeve intermittently pushes the lever, and under the action of the first spring, the sealing disc intermittently blocks the pipeline to prevent continuous flow of air during detection, thereby reducing the error of the detection result.

[0004] Although the above device can prevent the continuous flow of air during detection, the structural design of the device has too many scattered structures and is not strong in integrity. In addition, since the air in the device flows intermittently through a motor drive control, when the wind is not strong, it is difficult to ensure that the air after detection can be completely discharged from the device before the next detection, and the accuracy of the detection cannot be guaranteed. Summary of the invention

[0005] Based on this, it is necessary to provide a kind of petrochemical cluster pollution source testing equipment and testing method to address the above-mentioned technical problems, "or direct positive description".

[0006] The present invention provides a pollution source testing device for a petrochemical cluster area, comprising:

[0007] The first tube body has a first end for air intake;

[0008] A second tube body, detachably mounted on the tail end of the first tube body;

[0009] A third tube body is located in the second tube body, and a detector is installed in the third tube body;

[0010] A first arched plate is installed at the rear end of the first tube body, a first ventilation hole is opened on the first arched plate, the first arched plate faces the rear end of the second tube body, and when the first arched plate changes direction, the first ventilation hole is affected by the first arched plate and becomes closed;

[0011] A second arched plate, mounted at the head end of the second tube body and oriented in the same direction as the first arched plate;

[0012] A rotating cover is rotatably mounted on the tail end of the third tube body on one side and is located outside the second tube body on the other side. When external airflow flows through the second tube body along the first tube body, the rotating cover is driven by the airflow to rotate and approach the second arched plate. When the rotating cover moves as a whole into the tail end of the second tube body, the tail end of the second tube body is closed, and the second arched plate is deformed by the influence of the closing of the tail end of the second tube body, and pushes the first arched plate to change its direction. At this time, the first ventilation hole becomes closed, and the interior of the second tube body becomes an independent closed space.

[0013] In one embodiment, the third tube body includes a second air inlet pipe and a first positioning tube, the central axes of the second air inlet pipe and the first positioning tube coincide, the diameter of the first positioning tube is smaller than the diameter of the second air inlet pipe, and a third ventilation hole is provided at the connection between the first positioning tube and the second air inlet pipe. When the rotating cover moves as a whole to the rear end of the second tube body, air enters the third ventilation hole, and the second arched plate is deformed due to the air pressure in the second air inlet pipe.

[0014] In one embodiment, the third ventilation hole is located at a negative pressure position of airflow inside the first tube body and the second tube body.

[0015] In one embodiment, the rotating cover includes a conical plate, a second positioning tube, a connecting plate and an air guide plate, the conical end of the conical plate faces the head end of the second tube body, the second positioning tube is fixed to a side of the conical plate with a conical end, and the second positioning tube is threadedly installed in the first positioning tube, a plurality of connecting plates are vertically arranged on a side of the conical plate with a conical end, and a plurality of connecting plates are arranged in a circular array around the central axis of the second positioning tube, an end of each connecting plate away from the conical plate is connected to an air guide plate, an angle is formed between the air guide plate and the connecting plate, and a plurality of air guide plates are arranged in a circular array around the central axis of the second positioning tube.

[0016] In one embodiment, a connecting rod is movably inserted in the second positioning tube, and one end of the connecting rod is connected to the second arched plate.

[0017] In one embodiment, the first arch plate includes an arch portion and an annular portion, the first ventilation hole is opened on the annular portion, the arch portion is opposite to the second arch plate, the first arch plate is made of a rubber material that deforms under force, when the arch portion is toward the tail end of the second tube body, the two ends of the first ventilation hole have the same diameter, when the arch portion is toward the head end of the first tube body, the annular portion shrinks toward one side of the tail end of the second tube body, so that the end of the first ventilation hole located on this surface is reduced to be closed.

[0018] In one embodiment, the first arch plate includes an elastic plate and an annular plate, the first ventilation hole is opened on the annular portion, the elastic plate is opposite to the second arch plate, the elastic plate is made of a metal material that is deformed under force, and the annular portion is made of a rubber material that is deformed under force. When the elastic plate is toward the rear end of the second tube body, the two ends of the first ventilation hole have the same diameter. When the elastic plate is toward the front end of the first tube body, the annular portion shrinks toward one side of the rear end of the second tube body, thereby shrinking the end of the first ventilation hole located on this side to be closed.

[0019] In one embodiment, the first tube body includes a first air inlet pipe and a positioning ring, the head end of the first air inlet pipe is provided with a first air inlet port, the positioning ring is arranged on the outer ring of the first air inlet pipe, an installation cavity is formed between the positioning ring and the first air inlet pipe, positioning holes are coaxially opened on the positioning ring and the first air inlet pipe, an exhaust member is installed in the installation cavity, when the first arch plate is toward the rear end of the second tube body, the exhaust member closes the installation cavity, when the first arch plate is toward the head end of the first tube body, the exhaust member is affected by the air pressure and moves along the central axis direction of the positioning hole, and the airflow in the first air inlet pipe will be discharged from the installation cavity.

[0020] In one embodiment, the exhaust component includes a positioning block, a positioning plate and a spring, the positioning block is movably engaged in the two coaxially arranged positioning holes, the positioning block is hollow inside, and an opening is set at one end of the positioning block facing the inside of the first air inlet pipe, the positioning plate is located in the installation cavity, the positioning plate is sleeved on the positioning block, and the positioning plate is elastically connected to one side of the installation cavity through the spring, and a fourth ventilation hole is also opened inside the positioning block. When the first arched plate is facing the tail end of the second tube body, the fourth ventilation hole is located in the installation cavity or the positioning hole, and when the first arched plate is facing the head end of the first tube body, the positioning block is pushed by the airflow to move along the central axis of the positioning hole, so that the fourth ventilation hole can be connected to the outside.

[0021] The present invention also provides a method for testing pollution sources in a petrochemical cluster area, the method comprising:

[0022] The airflow passes through the first tube body, the first arched plate, and the second tube body in sequence and flows out from the rear end of the second tube body. The rotating cover is driven to rotate by the airflow during the airflow passing through, and the rotating cover approaches the second arched plate during the rotation.

[0023] When the rotating cover moves as a whole into the rear end of the second tube body, the rear end of the second tube body is closed, and the second arched plate is deformed by the closure of the rear end of the second tube body, and pushes the first arched plate to change direction. At this time, the first ventilation hole becomes closed, and the interior of the second tube body becomes an independent closed space.

[0024] The above-mentioned petrochemical cluster pollution source testing equipment and testing method are placed in the windward when in use, and the airflow in the external environment will enter the first tube body and enter the second tube body through the first ventilation hole on the first arched plate. At this time, the first arched plate faces the tail end of the second tube body, and then the airflow will flow out from the tail end of the second tube body. Since the rotating cover is rotated and installed on the tail end of the third tube body on one side, and the other side is located outside the third tube body, when the airflow flows through the tail end of the second tube body, the rotating cover will rotate and approach the second arched plate under the influence of the airflow. When the rotating cover moves as a whole into the tail end of the second tube body, the tail end of the second tube body is closed, and the second arched plate is deformed by the influence of the closure of the tail end of the second tube body, and the first arched plate is pushed to change direction. At this time, the first ventilation hole becomes a closed state, and the inside of the second tube body becomes an independent closed space. During use, the device will change the closed time interval inside the second tube body according to the size of the airflow, so as to ensure that the airflow entering the third tube body is the newly entered airflow, so that the accuracy of the test is higher. At the same time, the overall structure of the device is located in two tube bodies, and the device is integrally cavity, which is more convenient to move, place and take. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of a three-dimensional cross-sectional structure of a pollution source testing device provided by the present invention;

[0027] Figure 2 A schematic diagram of the planar cross-sectional structure of the pollution source testing equipment provided by the present invention;

[0028] Figure 3 A schematic structural diagram of a first tube body provided by the present invention;

[0029] Figure 4 A schematic diagram of the structure of the third tube body provided by the present invention;

[0030] Figure 5 A schematic diagram of the structure of the rotary cover provided by the present invention;

[0031] Figure 6 A schematic diagram of the structure of the exhaust member provided by the present invention;

[0032] Figure 7 One of the structural schematic diagrams of the first arched plate provided by the present invention;

[0033] Figure 8 The second structural schematic diagram of the first arched plate provided by the present invention.

[0034] Reference numerals:

[0035] 100, first tube body; 110, first air inlet pipe; 120, first air inlet port; 130, positioning ring; 131, mounting cavity; 132, positioning hole; 200, first arch plate; 210, arch portion; 220, annular portion; 221, first ventilation hole; 230, elastic plate; 231, second ventilation hole; 300, second tube body; 400, third tube body; 410, second air inlet pipe; 420, first positioning tube; 430, third ventilation hole; 500, second arch plate; 600, rotating cover; 610, conical plate; 620, second positioning tube; 630, connecting plate; 640, air guide plate; 700, detector; 800, exhaust member; 810, positioning block; 811, fourth ventilation hole; 820, positioning plate; 830, spring; 900, connecting rod. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Combine the following Figures 1 to 8 The invention describes a petrochemical cluster pollution source testing device and a testing method.

[0038] like Figures 1 to 3As shown, in one embodiment, a pollution source testing device for a petrochemical cluster area includes a first tube body 100, a second tube body 300, a third tube body 400, a first arched plate 200, a second arched plate 500 and a rotating cover 600. The head end of the first tube body 100 is used for air intake; the second tube body 300 is detachably mounted on the tail end of the first tube body 100; the third tube body 400 is located in the second tube body 300, and a detector 700 is installed in the third tube body 400; the first arched plate 200 is installed at the tail end of the first tube body 100, and a first ventilation hole 221 is opened on the first arched plate 200, and the first arched plate 200 faces the tail end of the second tube body 300. When the first arched plate 200 changes direction, the first ventilation hole 221 is affected by the first arched plate 200. The second arched plate 500 is installed at the head end of the second tube body 300 and is in the same direction as the first arched plate 200. One side of the rotating cover 600 is rotatably installed at the tail end of the third tube body 400, and the other side is located outside the second tube body 300. When the external airflow flows through the second tube body 300 along the first tube body 100, the rotating cover 600 will be driven by the airflow to rotate and approach the second arched plate 500. When the rotating cover 600 moves as a whole into the tail end of the second tube body 300, the tail end of the second tube body 300 is closed, and the second arched plate 500 is deformed by the influence of the closure of the tail end of the second tube body 300, and pushes the first arched plate 200 to change its direction. At this time, the first ventilation hole 221 becomes closed, and the inside of the second tube body 300 becomes an independent closed space.

[0039] The above-mentioned petrochemical cluster pollution source testing equipment is placed facing the wind when in use, and the airflow in the external environment will enter the first tube body 100 and enter the second tube body 300 through the first ventilation hole 221 on the first arch plate 200. At this time, the first arch plate 200 faces the rear end of the second tube body 300, and then the airflow will flow out from the rear end of the second tube body 300. Since one side of the rotating cover 600 is rotatably installed at the rear end of the third tube body 400, and the other side is located outside the third tube body 400, when the airflow flows through the rear end of the second tube body 300, the rotating cover 600 will rotate and approach the second arch plate 500 under the influence of the airflow. When the rotating cover 600 moves as a whole into the rear end of the second tube body 300, the rear end of the second tube body 300 is closed, and the second arch plate 500 is deformed due to the influence of the closure of the rear end of the second tube body 300, and pushes the first arch plate 200 to change direction. At this time, the first ventilation hole 221 becomes closed, and the inside of the second tube body 300 becomes an independent closed space. During use, the device will change the closed time interval inside the second tube body 300 according to the size of the airflow, so as to ensure that the airflow entering the third tube body 400 is the new airflow, making the test more accurate. At the same time, the overall structure of the device is located in the two tubes, and the device is integrally cavity, which is more convenient to move, place and take.

[0040] Specifically, the head end in this embodiment refers to the windward end of the component, and the tail end refers to the leeward end of the component. Figure 2 As shown, the left side of the figure is the head end and the right side of the figure is the tail end.

[0041] like Figure 4 As shown, in one embodiment, the petrochemical cluster pollution source testing equipment provided by the present invention, the third tube body 400 includes a second air inlet pipe 410 and a first positioning tube 420, the central axes of the second air inlet pipe 410 and the first positioning tube 420 coincide, the diameter of the first positioning tube 420 is smaller than the diameter of the second air inlet pipe 410, and a third ventilation hole 430 is provided at the connection between the first positioning tube 420 and the second air inlet pipe 410. When the rotating cover 600 moves as a whole to the rear end of the second tube body 300, air enters the third ventilation hole 430, and the second arched plate 500 is deformed by the air pressure in the second air inlet pipe 410.

[0042] Specifically, when the rotating cover 600 moves as a whole to the rear end of the second tube body 300, the rear end of the second tube body 300 is closed. At this time, the airflow entering the second tube body 300 will flow into the third tube body 400 through the third ventilation hole 430 when the rear end of the second tube body 300 is closed. When the airflow suddenly enters the third tube body 400, the internal air pressure will increase, and the second arch plate 500 installed at the head end of the third tube body 400 will be deformed and face the head end of the first tube body 100, so that the first arch plate 200 will be deformed synchronously and face the head end of the first tube body 100. At this time, the first ventilation hole 221 on the first arch plate 200 is affected by the deformed first arch plate 200 and is closed, thereby ensuring the stability of the airflow inside the third tube body 400.

[0043] In one embodiment, in the petrochemical cluster pollution source testing equipment provided by the present invention, the third ventilation hole 430 is located at the negative pressure position of the airflow in the first tube body 100 and the second tube body 300.

[0044] Specifically, since the third through hole is located at the negative pressure position of the airflow in the first tube body 100 and the second tube body 300, when the airflow passes through the second tube body 300 and flows out from the rear end of the second tube body 300, it will not flow to the third tube body 400 through the third through hole, but will carry the airflow in the third tube body 400 to flow to the rear end of the second tube body 300, thereby leading the airflow in the third tube body 400 out.

[0045] like Figure 5As shown, in one embodiment, the petrochemical cluster pollution source testing equipment provided by the present invention, the rotating cover 600 includes a conical plate 610, a second positioning tube 620, a connecting plate 630 and an air guide plate 640, the conical end of the conical plate 610 faces the head end of the second tube body 300, the second positioning tube 620 is fixed to the side of the conical plate 610 with the conical end, and the second positioning tube 620 is threadedly installed in the first positioning tube 420, a plurality of connecting plates 630 are vertically arranged on the side of the conical plate 610 with the conical end, and the plurality of connecting plates 630 are arranged in a circular array around the central axis of the second positioning tube 620, and each connecting plate 630 is connected to an end away from the conical plate 610 with an air guide plate 640, an angle is formed between the air guide plate 640 and the connecting plate 630, and the plurality of air guide plates 640 are arranged in a circular array around the central axis of the second positioning tube 620.

[0046] Specifically, the setting of the conical plate 610 allows the airflow to flow out along the conical plate 610 at an angle. When the airflow flows toward the rotating cover 600, it will first contact the inclined wind guide plate 640, and under the influence of the wind guide plate 640, it will flow toward the connection between the connecting plate 630 and the conical plate 610, and will be guided to other directions by the conical plate 610. During this process, the rotating cover 600 will be pushed by the airflow to rotate, and since the second positioning tube 620 is threadedly installed in the first positioning tube 420, the rotating cover 600 will move into the first positioning tube 420 during the rotation process, and finally the edge of the conical plate 610 will abut against the edge of the rear end of the second tube body 300.

[0047] In one embodiment, in the petrochemical cluster pollution source testing equipment provided by the present invention, a connecting rod 900 is movably inserted into the second positioning tube 620 , and one end of the connecting rod 900 is connected to the second arch plate 500 .

[0048] Specifically, when the device needs to be used again, the connecting rod 900 is driven to move in a direction away from the second arch plate 500 , and the second arch plate 500 is driven to move back toward the rear end of the second tube body 300 .

[0049] like Figure 7 As shown, in one embodiment, the petrochemical cluster pollution source testing equipment provided by the present invention, the first arch plate 200 includes an arch portion 210 and an annular portion 220, the first ventilation hole 221 is opened on the annular portion 220, the arch portion 210 is opposite to the second arch plate 500, the first arch plate 200 is made of a rubber material that is deformed by force, when the arch portion 210 is toward the tail end of the second tube body 300, the two ends of the first ventilation hole 221 have the same diameter, when the arch portion 210 is toward the head end of the first tube body 100, the annular portion 220 shrinks toward one side of the tail end of the second tube body 300, so that the end of the first ventilation hole 221 located on this surface is reduced to be closed.

[0050] Specifically, the first ventilation hole 221 is opened based on the first arch plate 200 toward the rear end of the second tube body 300. At this time, both sides of the first arch plate 200 can be regarded as having no contraction or expansion. When the first arch plate 200 is toward the front end of the first tube body 100, the side of the annular portion 220 toward the front end of the first tube body 100 expands, and the side of the annular portion 220 toward the rear end of the second tube body 300 contracts and squeezes, so that one end of the first ventilation hole 221 is squeezed and closed.

[0051] like Figure 8 As shown, in one embodiment, the petrochemical cluster pollution source testing equipment provided by the present invention, the first arch plate 200 includes an elastic plate 230 and an annular plate, the first ventilation hole 221 is opened on the annular portion 220, the elastic plate 230 is opposite to the second arch plate 500, and the elastic plate 230 is provided with a second ventilation hole 231 opposite to the first ventilation hole 221, the elastic plate 230 is made of a metal material that is deformed by force, and the annular portion 220 is made of a rubber material that is deformed by force, when the elastic plate 230 is toward the tail end of the second tube body 300, the two ends of the first ventilation hole 221 have the same diameter, and when the elastic plate 230 is toward the head end of the first tube body 100, the annular portion 220 shrinks toward one side of the tail end of the second tube body 300, thereby shrinking the end of the first ventilation hole 221 located on this surface to be closed.

[0052] Specifically, in order to prevent the second arch plate 500 from generating strain in the middle part of the second arch plate 500 when it contacts the middle part of the first arch plate 200, thereby absorbing the deformation force and causing the orientation of the first arch plate 200 to remain unchanged, the elastic plate 230 in this embodiment is configured to be made of a metal material that is deformed under force. When the orientation of the first arch plate 200 changes and contacts the elastic plate 230, the elastic plate 230 will be deformed by the abutment force of the first arch plate 200, thereby toward the head end of the first tube body 100, and the annular portion 220 arranged on the elastic plate 230 will also be deformed accordingly, thereby squeezing and closing one end of the first ventilation hole 221.

[0053] like Figure 6As shown, in one embodiment, the petrochemical cluster pollution source testing equipment provided by the present invention, the first tube body 100 includes a first air inlet pipe 110 and a positioning ring 130, the head end of the first air inlet pipe 110 is provided with a first air inlet port 120, the positioning ring 130 is arranged on the outer ring of the first air inlet pipe 110, and an installation cavity 131 is formed between the positioning ring 130 and the first air inlet pipe 110, and a positioning hole 132 is coaxially opened on the positioning ring 130 and the first air inlet pipe 110, and an exhaust member 800 is installed in the installation cavity 131, when the first arch plate 200 is toward the tail end of the second tube body 300, the exhaust member 800 closes the installation cavity 131, and when the first arch plate 200 is toward the head end of the first tube body 100, the exhaust member 800 is affected by the air pressure and moves along the central axis direction of the positioning hole 132, and the airflow in the first air inlet pipe 110 will be discharged from the installation cavity 131.

[0054] In one embodiment, the petrochemical cluster pollution source testing equipment provided by the present invention, the exhaust component 800 includes a positioning block 810, a positioning plate 820 and a spring 830, the positioning block 810 is movably clamped in two coaxially arranged positioning holes 132, the positioning block 810 is hollow inside, and an opening is set at one end of the positioning block 810 facing the inside of the first air inlet pipe 110, the positioning plate 820 is located in the installation cavity 131, the positioning plate 820 is sleeved on the positioning block 810, the positioning plate 820 is elastically connected to one side of the installation cavity 131 through the spring 830, and a fourth ventilation hole 811 is also opened inside the positioning block 810, when the first arched plate 200 is toward the tail end of the second tube body 300, the fourth ventilation hole 811 is located in the installation cavity 131 or the positioning hole 132, when the first arched plate 200 is toward the head end of the first tube body 100, the positioning block 810 is pushed by the airflow and moves along the central axis of the positioning hole 132, so that the fourth ventilation hole 811 can be connected to the outside.

[0055] In one embodiment, the present invention provides a method for testing pollution sources in a petrochemical cluster area, comprising the following steps:

[0056] The airflow passes through the first tube body, the first arched plate, and the second tube body in sequence and flows out from the rear end of the second tube body. The rotating cover is driven to rotate by the airflow during the airflow passing through, and the rotating cover approaches the second arched plate during the rotation.

[0057] When the rotating cover moves as a whole into the rear end of the second tube body, the rear end of the second tube body is closed, and the second arched plate is deformed by the closure of the rear end of the second tube body, and pushes the first arched plate to change direction. At this time, the first ventilation hole becomes closed, and the interior of the second tube body becomes an independent closed space.

[0058] The above-mentioned method for testing pollution sources in petrochemical clusters is placed facing the wind when in use, and the airflow in the external environment will enter the first tube body and enter the second tube body through the first ventilation hole on the first arch plate. At this time, the first arch plate faces the tail end of the second tube body, and then the airflow will flow out from the tail end of the second tube body. Since the rotating cover is rotatably installed at the tail end of the third tube body on one side and located outside the third tube body on the other side, when the airflow flows through the tail end of the second tube body, the rotating cover will rotate and approach the second arch plate under the influence of the airflow. When the rotating cover moves as a whole into the tail end of the second tube body, the tail end of the second tube body is closed, and the second arch plate is deformed under the influence of the closure of the tail end of the second tube body, and pushes the first arch plate to change direction. At this time, the first ventilation hole becomes a closed state, and the inside of the second tube body becomes an independent closed space. During use, the device will change the closed timing interval inside the second tube body according to the size of the airflow, thereby ensuring that the airflow entering the third tube body is the newly entered airflow, making the test more accurate.

[0059] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A pollution source testing device for petrochemical clusters, characterized in that: include: The first tube body has a first end for air intake; A second tube body, detachably mounted on the tail end of the first tube body; A third tube body is located in the second tube body, and a detector is installed in the third tube body; A first arched plate is installed at the rear end of the first tube body, a first ventilation hole is opened on the first arched plate, the first arched plate faces the rear end of the second tube body, and when the first arched plate changes direction, the first ventilation hole is affected by the first arched plate and becomes closed; A second arched plate is installed at the head end of the second tube body and is in the same direction as the first arched plate; A rotating cover, one side of which is rotatably mounted on the rear end of the third tube body, and the other side of which is located outside the second tube body. When external airflow flows through the second tube body along the first tube body, the rotating cover is driven by the airflow to rotate and approach the second arched plate. When the rotating cover moves as a whole into the rear end of the second tube body, the rear end of the second tube body is closed, and the second arched plate is deformed by the influence of the closing of the rear end of the second tube body, and pushes the first arched plate to change its direction. At this time, the first ventilation hole becomes closed, and the interior of the second tube body becomes an independent closed space. The third tube body includes a second air inlet pipe and a first positioning tube, the central axes of the second air inlet pipe and the first positioning tube coincide with each other, the diameter of the first positioning tube is smaller than the diameter of the second air inlet pipe, and a third ventilation hole is provided at the connection between the first positioning tube and the second air inlet pipe, when the rotating cover moves as a whole into the rear end of the second tube body, air enters into the third ventilation hole, and the second arched plate is deformed by the air pressure in the second air inlet pipe; The third ventilation hole is located at the negative pressure position of the airflow in the first tube body and the second tube body.

2. The petrochemical cluster pollution source testing equipment according to claim 1 is characterized in that: The rotating cover includes a conical plate, a second positioning tube, a connecting plate and an air guide plate, the conical end of the conical plate faces the head end of the second tube body, the second positioning tube is fixed to a side of the conical plate with a conical end, and the second positioning tube is threadedly installed in the first positioning tube, a plurality of connecting plates are vertically arranged on a side of the conical plate with a conical end, and a plurality of connecting plates are arranged in a circular array around the central axis of the second positioning tube, an end of each connecting plate away from the conical plate is connected to an air guide plate, an angle is formed between the air guide plate and the connecting plate, and a plurality of air guide plates are arranged in a circular array around the central axis of the second positioning tube.

3. The petrochemical cluster pollution source testing equipment according to claim 2 is characterized in that: A connecting rod is movably inserted in the second positioning tube, and one end of the connecting rod is connected to the second arched plate.

4. The petrochemical cluster pollution source testing equipment according to claim 3 is characterized in that: The first arched plate includes an arched portion and an annular portion, the first ventilation hole is opened on the annular portion, the arched portion is opposite to the second arched plate, the first arched plate is made of a rubber material that deforms under force, when the arched portion is toward the tail end of the second tube body, the two ends of the first ventilation hole have the same diameter, when the arched portion is toward the head end of the first tube body, the annular portion shrinks toward one side of the tail end of the second tube body, so that the end of the first ventilation hole located on this surface is reduced to be closed.

5. The petrochemical cluster pollution source testing equipment according to claim 4 is characterized in that: The first arch plate includes an elastic plate and an annular plate, the first ventilation hole is opened on the annular portion, the elastic plate is opposite to the second arch plate, the elastic plate is made of a metal material that is deformed under force, and the annular portion is made of a rubber material that is deformed under force. When the elastic plate is toward the tail end of the second tube body, the two ends of the first ventilation hole have the same diameter. When the elastic plate is toward the head end of the first tube body, the annular portion shrinks toward one side of the tail end of the second tube body, thereby shrinking the end of the first ventilation hole located on this surface to be closed.

6. The petrochemical cluster pollution source testing equipment according to claim 1, characterized in that: The first tube body includes a first air inlet pipe and a positioning ring. The head end of the first air inlet pipe is provided with a first air inlet port. The positioning ring is arranged on the outer ring of the first air inlet pipe. An installation cavity is formed between the positioning ring and the first air inlet pipe. Positioning holes are coaxially provided on the positioning ring and the first air inlet pipe. An exhaust component is installed in the installation cavity. When the first arch plate is toward the rear end of the second tube body, the exhaust component closes the installation cavity. When the first arch plate is toward the head end of the first tube body, the exhaust component is affected by the air pressure and moves along the central axis direction of the positioning hole, and the airflow in the first air inlet pipe will be discharged from the installation cavity.

7. The petrochemical cluster pollution source testing equipment according to claim 6, characterized in that: The exhaust component includes a positioning block, a positioning plate and a spring, the positioning block is movably clamped in the two coaxially arranged positioning holes, the positioning block is hollow inside, and an opening is set at one end of the positioning block facing the inside of the first air inlet pipe, the positioning plate is located in the installation cavity, the positioning plate is sleeved on the positioning block, and the positioning plate is elastically connected to one side of the installation cavity through the spring, and a fourth ventilation hole is also opened in the positioning block. When the first arched plate is facing the tail end of the second tube body, the fourth ventilation hole is located in the installation cavity or the positioning hole, and when the first arched plate is facing the head end of the first tube body, the positioning block is pushed by the airflow and moves along the central axis of the positioning hole, so that the fourth ventilation hole can be connected to the outside.

8. A testing method using the petrochemical cluster pollution source testing equipment according to claim 1, characterized in that: The method comprises: The airflow passes through the first tube body, the first arched plate, and the second tube body in sequence and flows out from the rear end of the second tube body. The rotating cover is driven to rotate by the airflow during the airflow passing through, and the rotating cover approaches the second arched plate during the rotation. When the rotating cover moves as a whole into the rear end of the second tube body, the rear end of the second tube body is closed, and the second arched plate is deformed by the closure of the rear end of the second tube body, and pushes the first arched plate to change direction. At this time, the first ventilation hole becomes closed, and the interior of the second tube body becomes an independent closed space.

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