Petrochemical waste gas monitoring device

Abstract

The utility model discloses a petrochemical waste gas monitoring device which comprises a waterproof box, the waterproof box is fixedly arranged on the outer side wall of a smoke exhaust pipe, an air entraining assembly is arranged in the waterproof box, one end of the air entraining assembly penetrates through the waterproof box and then is inserted into the smoke exhaust pipe, and the other end of the air entraining assembly is communicated with a main air pipe. The other end of the main gas pipe penetrates out of the waterproof box and then is communicated with a compressed air pipe and a gas outlet pipe, a detection opening is formed in the gas outlet pipe and allows a probe of a waste gas monitoring instrument to be inserted, and the end, away from the main gas pipe, of the gas outlet pipe is connected with waste gas purification equipment. According to the petrochemical engineering waste gas monitoring device, the air entraining assembly is controlled through the controller on the ground so as to control waste gas in the smoke exhaust pipe to be led out, and the risk of manual detection is reduced; by arranging the detection port into which the probe of the waste gas monitoring instrument can be inserted for a long time on the gas outlet pipe and arranging the waste gas purification equipment at the end part of the gas outlet pipe, whether waste gas circulation is started or not is directly determined by the gas valve, so that harmful gas is prevented from overflowing.

Description

Technical Field

[0001] The utility model relates to the technical field of petrochemical engineering, in particular to a petrochemical waste gas monitoring device. Background Art

[0002] Petrochemical engineering is a processing industry that uses petroleum and natural gas as raw materials to produce petroleum products and petrochemical products. During the production process of the petrochemical industry, before the waste gas is discharged after purification, it is necessary to monitor the discharged gas to determine whether it meets the standards.

[0003] In the existing monitoring method, a detection port is opened on the exhaust pipe, and then the probe of the detection device is inserted into the detection port for detection. In order to prevent the detection device from being in a continuous use state, which may lead to a decrease in sensitivity, and there is no need to perform real-time detection on the waste gas every day, the detection port is opened for monitoring only once every certain period of time. However, the position of the detection port is special, generally on the exhaust pipe, and each time manual climbing is required for the detection operation, which has certain risks; and during the detection, during the operation of the worker, there may be a situation where harmful gases overflow and pollute the air.

[0004] Therefore, it is necessary to propose a petrochemical waste gas monitoring device to solve the above problems. Summary of the Utility Model

[0005] The utility model aims at the problems of manual risks and air leakage pollution during detection caused by the existing petrochemical waste gas purification and emission methods, and proposes a new petrochemical waste gas monitoring device.

[0006] To solve the above technical problems, the utility model provides a petrochemical waste gas monitoring device, including: a waterproof box, which is fixedly arranged on the outer side wall of the exhaust pipe; an air extraction assembly is arranged in the waterproof box, one end of the air extraction assembly passes through the waterproof box and is inserted into the exhaust pipe, and the other end is communicated with the main air pipe; the other end of the main air pipe passes through the waterproof box and is respectively communicated with a compressed air pipe and an air outlet pipe; a detection port is arranged on the air outlet pipe, and the probe of the waste gas monitoring instrument is inserted into the detection port; the end of the air outlet pipe far from the main air pipe is connected with the waste gas purification equipment.

[0007] In a preferred embodiment of this solution, the air extraction assembly includes an air extraction cylinder and a telescopic device; the air extraction cylinder includes a conical sealing cylinder and an L-shaped pipe arranged at the front end of the conical sealing cylinder, the end of the L-shaped pipe far from the conical sealing cylinder is arranged inside the exhaust pipe and is arranged along the pipe wall, and the main air pipe is communicated with the end of the conical sealing cylinder far from the L-shaped pipe; the telescopic device includes a motor fixedly arranged in the waterproof box and a plug arranged in the conical sealing cylinder, and the motor shaft of the motor is inserted into the conical sealing cylinder and fixedly connected with the plug.

[0008] Further, the L-shaped pipe is connected to the conical sealing cylinder, and the inner diameter of the L-shaped pipe is equal to the inner diameter of the front end of the conical sealing cylinder.

[0009] Further, a sealing ring is installed on the edge of the end face of the plug away from the motor shaft. The diameter of the plug is 1-2 cm larger than the diameter of the L-shaped pipe and 15-20 cm smaller than the inner diameter of the large end of the conical sealing cylinder.

[0010] In a preferred embodiment of this solution, a main air valve, a compressed air valve, and an air valve are respectively installed on the main air pipe, the compressed air pipe, and the air outlet pipe.

[0011] Further, the petrochemical waste gas monitoring device further includes a controller, which is arranged on the ground and is electrically connected to the waste gas monitoring instrument, the motor, the main air valve, the compressed air valve, and the air valve respectively.

[0012] Implementing the present utility model has the following beneficial effects:

[0013] This petrochemical waste gas monitoring device controls the extraction of waste gas in the exhaust pipe by the controller on the ground, thereby reducing the risk of manual detection.

[0014] By providing a detection port on the air outlet pipe where the probe of the waste gas monitoring instrument can be inserted for a long time and a waste gas purification device at the end of the air outlet pipe, it directly determines whether to open the waste gas flow by the air valve, preventing the spillage of harmful gases.

[0015] This petrochemical waste gas monitoring device also connects a compressed air pipeline to the main air pipe, which can prevent the L-shaped pipe on the air extraction assembly from being blocked and is more convenient for dredging the air extraction assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of the petrochemical waste gas monitoring device provided by the present utility model;

[0018] In the figure: waterproof box 1, exhaust pipe 2, main air pipe 3, conical sealing cylinder 4, L-shaped pipe 5, motor 6, plug 7, motor shaft 8, compressed air pipe 9, air outlet pipe 10, detection port 11, waste gas monitoring instrument 12, waste gas purification device 13, sealing ring 14, main air valve 15, compressed air valve 16, air valve 17, and controller 18. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of the petrochemical waste gas monitoring device provided by the present invention; the petrochemical waste gas monitoring device includes:

[0021] A waterproof box 1 is fixedly arranged on the outer side wall of the exhaust pipe 2, and an air extraction component is arranged in the waterproof box 1. In this embodiment, the air extraction component includes an air extraction cylinder and a telescopic device; the air extraction cylinder includes a conical sealing cylinder 4 and an L-shaped pipe 5 arranged at the front end of the conical sealing cylinder 4. One end of the L-shaped pipe 5 far from the conical sealing cylinder 4 is arranged inside the exhaust pipe 2 and is arranged close to the pipe wall. The L-shaped pipe 5 is communicated with the conical sealing cylinder 4, and the inner diameter of the L-shaped pipe 5 is equal to the inner diameter of the front end of the conical sealing cylinder 4; the telescopic device includes a motor 6 fixedly arranged in the waterproof box 1 and a plug 7 arranged in the conical sealing cylinder 4. The motor shaft 8 of the motor 6 is inserted into the conical sealing cylinder 4 and fixedly connected with the plug 7. A sealing ring 14 is installed on the edge of the end face of the plug 7 far from the motor shaft 8, and the diameter of the plug 7 is 1-2 cm larger than the diameter of the L-shaped pipe 5 and 15-20 cm smaller than the inner diameter of the large end of the conical sealing cylinder 4.

[0022] One end of the main air pipe 3 is communicated with the end of the conical sealing cylinder 4 far from the L-shaped pipe 5, and the other end passes through the waterproof box 1 and is respectively communicated with a compressed air pipe 9 and an air outlet pipe 10. A detection port 11 is arranged on the air outlet pipe 10, and the probe of the waste gas monitoring instrument 12 is inserted into the detection port 11. The end of the air outlet pipe 10 far from the main air pipe 3 is connected with a waste gas purification device 13.

[0023] For convenient air control, a main air valve 15, a compressed air valve 16 and an air valve 17 are respectively installed on the main air pipe 3, the compressed air pipe 9 and the air outlet pipe 10; a controller 18 is arranged on the ground and is electrically connected with the waste gas monitoring instrument 12, the motor 6, the main air valve 15, the compressed air valve 16 and the air valve 17 respectively.

[0024] This petrochemical waste gas monitoring device controls the motor through a controller to move the plug backward, allowing the flue gas to enter the conical sealing cylinder through the L-shaped pipe. Then, the main gas valve and the gas valve on the main gas pipe and the outlet pipe are opened, enabling the flue gas to enter the outlet pipe from the main gas pipe. The waste gas detection instrument detects the flue gas at the detection port of the outlet pipe. During the detection process, the flue gas is transported into the waste gas purification equipment for storage and purification, without leakage and pollution of the air. In addition, this petrochemical waste gas monitoring device also has a dredging function. When the L-shaped pipe is blocked by flue gas soot, the controller can close the gas valve, open the compressed air valve, move the plug backward, so that the compressed air enters the main gas pipe from the compressed air pipe, then enters the conical sealing cylinder, and finally is transported into the L-shaped pipe to blow and dredge the L-shaped pipe.

[0025] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An oil and chemical waste gas monitoring device, characterized in that, Including: A waterproof box is fixedly arranged on the outer side wall of the exhaust pipe. An air guiding component is arranged in the waterproof box. One end of the air guiding component passes through the waterproof box and is inserted into the exhaust pipe, and the other end is communicated with the main air pipe. The other end of the main air pipe passes through the waterproof box and is respectively communicated with a compressed air pipe and an air outlet pipe. A detection port is arranged on the air outlet pipe, and the probe of the exhaust gas monitoring instrument is inserted into the detection port. The end of the air outlet pipe far away from the main air pipe is connected with an exhaust gas purification device.

2. The petrochemical waste gas monitoring device according to claim 1, characterized in that, The air guiding component includes an air guiding cylinder and a telescopic device; the air guiding cylinder includes a conical sealing cylinder and an L-shaped pipe arranged at the front end of the conical sealing cylinder. The end of the L-shaped pipe far away from the conical sealing cylinder is arranged inside the exhaust pipe and is arranged close to the pipe wall. The main air pipe is communicated with the end of the conical sealing cylinder far away from the L-shaped pipe; the telescopic device includes a motor fixedly arranged in the waterproof box and a plug arranged in the conical sealing cylinder. The motor shaft of the motor is inserted into the conical sealing cylinder and fixedly connected with the plug.

3. The petrochemical waste gas monitoring device according to claim 2, characterized in that, The L-shaped pipe is communicated with the conical sealing cylinder, and the inner diameter of the L-shaped pipe is equal to the inner diameter of the front end of the conical sealing cylinder.

4. The petrochemical waste gas monitoring device according to claim 3, wherein, A sealing ring is installed on the edge of the end face of the plug far away from the motor shaft, and the diameter of the plug is 1-2 cm larger than the diameter of the L-shaped pipe and 15-20 cm smaller than the inner diameter of the large end of the conical sealing cylinder.

5. The petrochemical waste gas monitoring device according to claim 4, characterized in that, Main air valves, compressed air valves and air valves are respectively installed on the main air pipe, the compressed air pipe and the air outlet pipe.

6. The petrochemical waste gas monitoring device according to claim 5, characterized in that, The petrochemical exhaust gas monitoring device further includes a controller, which is arranged on the ground and is electrically connected with the exhaust gas monitoring instrument, the motor, the main air valve, the compressed air valve and the air valve respectively.

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