A detection device for petrochemical gas sampling

Abstract

The utility model discloses a detection device for petroleum chemical industry gas sampling, including device main part, the bottom of device main part is equipped with the detection end for detecting gas, and the outside of detection end is sleeved into the connecting device, and the connecting device includes the clamping piece, and the inner wall of clamping piece is sleeved in the circumferential side of detection end, and the outside rotationally connected with the nut of clamping piece, and the bottom fixedly connected with the connecting shaft of clamping piece, and the bottom fixedly connected with the base of connecting shaft, and the side of connecting device is equipped with the transmission pipe, and the device is set to dismantle structure, when only need to detect fixed height, directly install, when needing to detect the gas of different height in the space, only need to sleeve equipment in the detection port, utilize the nut clamping, realize the process of quick installation, and collect and detect the air of different height through internal structure stage, and the installation process is more convenient, and make the detection process of equipment more accurate, and be convenient for the later maintenance and replacement.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, specifically to a detection device for sampling petrochemical gases. Background Technology

[0002] Chemical gas detection devices are specialized equipment used to monitor the composition, concentration, and leakage of gases in chemical production, storage, and transportation scenarios. They must meet requirements such as high precision, rapid response, and strong anti-interference capabilities. At the same time, they must have corresponding safety protection designs to address the flammable, explosive, toxic, harmful, and corrosive characteristics of chemical gases. Collective detection devices can be classified into handheld and fixed types according to their usage.

[0003] Among them, the fixed gas sampling and detection device needs to be fixedly installed at a fixed height during use. However, due to the different densities of the exhaust gases generated during the leakage and circulation of petrochemical gases, different densities of gases flow at different heights in the space during the circulation and diffusion process. Since the installation position of the fixed gas sampling device is fixed, the position of the gas it detects is also fixed.

[0004] Traditional sampling devices can only detect air of different densities by adjusting the height. This requires disassembling and reinstalling the entire device, which is cumbersome and time-consuming. In complex spatial environments that limit the installation location of the detection device, or when the device is installed at a low position or when the device is moved to a lower position using a lifting structure, the detection end of the device is prone to contact with ground dust, causing the equipment's detection results to drift or even corrode. Utility Model Content

[0005] The technical problem this invention aims to solve is that the entire device needs to be disassembled and reinstalled, which is a cumbersome and time-consuming process.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a detection device for petrochemical gas sampling, comprising a device body, a detection end for gas detection installed at the bottom of the device body, a connecting device fitted onto the outer side of the detection end, the connecting device including a clamping piece, the inner wall of the clamping piece fitting around the periphery of the detection end, a nut rotatably connected to the outer side of the clamping piece, a connecting shaft fixedly connected to the bottom end of the clamping piece, a base fixedly connected to the bottom end of the connecting shaft, a transmission pipe connected to the detection end installed on the side of the connecting device, several sets of openings opened on the side of the transmission pipe, and a telescopic spring installed on the inner wall of the opening, a sealing cap fixedly connected to the end of the telescopic spring away from the transmission pipe.

[0007] Furthermore, a flow tube is fixedly connected to the side of the base, and the end of the flow tube away from the base is connected through the interior of the transmission tube. The transmission tube and the base are arranged in a parallel direction.

[0008] Furthermore, the outer side of the clamping piece is provided with threads, the inner wall of the nut is provided with threaded grooves, and the inner side of the clamping piece is provided with textures.

[0009] Furthermore, a motor is installed at the top of the transmission pipe, and a transmission rod is fixedly connected to the output shaft of the motor. A fan blade is provided on the periphery of the end of the transmission rod, and the fan blade is fitted inside the transmission pipe. A fixing ring is fixedly connected to the inner wall of the transmission pipe, and the fixing ring is located at the lower end of the connection between the transmission pipe and the flow pipe.

[0010] Furthermore, a reciprocating screw is fixedly connected to the end of the transmission rod, and two sets of parallel limit rods are fixedly connected to the bottom end of the fixed ring. A platform is connected through the outer side of the limit rods, and a roller is rotatably connected to the side of the platform. A push rod is fixedly connected to the side of the roller, and the reciprocating screw can drive the vertical reciprocating motion.

[0011] Furthermore, the side of the roller is in contact with the inner wall of the transmission tube, the distance between the upper and lower openings on the side of the transmission tube is equal to the circumference of the roller, and the push rod connected to the side of the roller can be squeezed into the inner opening of the transmission tube during rotation.

[0012] Furthermore, the reciprocating screw has a reciprocating thread groove on its outer side, and a limiting protrusion is provided at the contact part between the platform and the reciprocating screw, and the limiting protrusion is embedded in the reciprocating thread groove on the outer side of the reciprocating screw.

[0013] Furthermore, the outer side of the platform slides against the inner wall of the transmission pipe, and the central axis of the limiting rod is arranged perpendicular to the platform.

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] (1) This device is designed with a detachable structure. When only a fixed height needs to be detected, it can be installed directly. When it is necessary to detect gas at different heights in the space, the device can be put into the detection port and clamped with nuts to achieve a quick installation process. The internal structure collects and detects air at different heights in stages, making the installation process more convenient and the detection process of the device more accurate, meeting the detection requirements at different heights. At the same time, the disassembly and installation process is convenient, which facilitates later maintenance and replacement.

[0016] (2) This device avoids changing the position of the sampling device's detection end by setting an external structure. It uses the power of the external structure to draw air at different heights to the detection end of the sampling device, avoiding the situation where the detection end of the traditional sampling device is installed too low because it needs to detect low-level air. This ensures that the device does not directly contact the complex environment at low levels and indirectly maintains the detection end. Attached Figure Description

[0017] Figure 1This is a front view schematic diagram of the detection device for petrochemical gas sampling according to this utility model.

[0018] Figure 2 This is a schematic diagram of the installation state of the detection device for petrochemical gas sampling according to this utility model.

[0019] Figure 3 This is a schematic diagram of the overall structure of the connection device of the detection device for petrochemical gas sampling according to this utility model.

[0020] Figure 4 This is an exploded structural diagram of the connection device of the detection device for petrochemical gas sampling according to this utility model.

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the transmission pipe of the detection device for petrochemical gas sampling according to this utility model.

[0022] Figure 6 This is a schematic diagram of the open structure of the transmission tube of the detection device for petrochemical gas sampling according to this utility model.

[0023] As shown in the figure: 1. Main body of the device; 2. Detection end; 3. Connecting device; 31. Clamping plate; 32. Nut; 33. Connecting shaft; 34. Base; 35. Flow pipe; 4. Transmission pipe; 5. Motor; 6. Transmission rod; 7. Fan blade; 8. Fixing ring; 9. Reciprocating screw; 10. Limiting rod; 11. Platform; 12. Roller; 13. Push rod; 14. Telescopic spring; 15. Sealing cover. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Combined with appendix Figure 1A detection device for sampling petrochemical gases includes a main body 1. A detection end 2 for gas detection is installed at the bottom of the main body 1. A detection element inside the detection end 2 converts the collected gas into an electrical signal for real-time detection. A connecting device 3 is fitted onto the outer side of the detection end 2. The connecting device 3 includes a clamping piece 31. The inner wall of the clamping piece 31 fits around the periphery of the detection end 2. The clamping piece 31 has a three-lobed structure and possesses deformation elasticity. Utilizing the converging elasticity of the clamping piece 31, it can be fitted onto the outer side of the detection end 2. A nut 32 is rotatably connected to the outer side of the clamping piece 31. The nut 32 rotates when fitted onto the outer side. When the clamping plate 31 is on the outside, it can gather the clamping plate 31 and further ensure the connection between the clamping plate 31 and the detection end 2. The bottom end of the clamping plate 31 is fixedly connected to the connecting shaft 33, and the bottom end of the connecting shaft 33 is fixedly connected to the base 34. The bottom end of the clamping plate 31 is flush with the bottom end of the detection end 2, ensuring that the air at the end of the detection end 2 can pass through the gap between the clamping plate 31 and the base 34 and contact and detect. The side of the connecting device 3 is equipped with a transmission pipe 4 that is connected to the detection end 2. Several sets of openings are opened on the side of the transmission pipe 4, and a telescopic spring 14 is installed on the inner wall of the opening. The end of the telescopic spring 14 away from the transmission pipe 4 is fixedly connected to a sealing cap 15.

[0026] To ensure air quality at different heights, personnel simply need to slip the connecting device 3 onto the outside of the detection end 2. The clamping plate 31 holds the air in place against the periphery of the detection end 2. Then, the clamping plate 31 is rotated using the nut 32 to further tighten the connection between the clamping plate 31 and the detection end 2. The gap between the clamping plate 31 and the base 34 allows the air at the port of the detection end 2 to be directly contacted for detection. Simultaneously, the airflow from the fan blade 7 inside the transmission pipe 4 is transmitted through the transmission pipe 4 when the sealing cover 15 is open at a certain height. The air at that opening is then blown towards the port of the detection end 2 through the flow pipe 35 for detection. This allows for air quality testing at different heights without changing the device's position. Furthermore, the connection between the connecting device 3 and the detection end 2 is convenient, quick, easy to use, and facilitates future maintenance.

[0027] In a specific implementation of this utility model, a flow pipe 35 is fixedly connected to the side of the base 34. The end of the flow pipe 35 away from the base 34 is connected through the interior of the transmission pipe 4. Gases at different heights are driven by the rotation of the fan blade 7 through the transmission pipe 4 and input to the port of the detection end 2 held by the clamping plate 31 for detection. The transmission pipe 4 and the base 34 are arranged in a parallel direction to ensure accurate detection position and maximize the extension of the detection space height.

[0028] In a specific implementation of this utility model, the outer side of the clamping piece 31 is provided with threads, the inner wall of the nut 32 is provided with threaded grooves, and the inner side of the clamping piece 31 is provided with textures. The textures on the inner side of the clamping piece 31 can increase the friction between it and the detection end 2, so that the two fit together tightly.

[0029] Combined with appendix Figure 4 There are gaps between the clamping pieces 31, and the thickness of the clamping pieces 31 gradually increases from top to bottom. When the nut 32 rotates on the outside of the clamping pieces 31, it can make the clamping pieces 31 gather towards the center and maintain a close fit.

[0030] Combined with appendix Figure 5 In a specific implementation of this utility model, a motor 5 is installed on the top of the transmission pipe 4. The side of the motor 5 is connected to an external power supply via a wire. The output shaft of the motor 5 is fixedly connected to a transmission rod 6. A fan blade 7 is provided on the periphery of the end of the transmission rod 6, and the fan blade 7 is fitted inside the transmission pipe 4. The output shaft of the motor 5 drives the fan blade 7 to rotate. At the same time, the fan blade 7 rotates inside the transmission pipe 4 to cooperate with the opening of the transmission pipe 4, so that the air at the opening is sucked and transported. A fixing ring 8 is fixedly connected to the inner wall of the transmission pipe 4. The fixing ring 8 is located at the lower end of the connection between the transmission pipe 4 and the flow pipe 35. The fixing ring 8 is configured to provide support for the connection of the limiting rod 10.

[0031] In a specific implementation of this utility model, a reciprocating screw 9 is fixedly connected to the end of the transmission rod 6, and two sets of parallel limiting rods 10 are fixedly connected to the bottom end of the fixed ring 8. A platform 11 is connected through the outer side of the limiting rod 10. The limiting rod 10 can limit the movement of the platform 11, so that it can only move up and down and cannot rotate. A roller 12 is rotatably connected to the side of the platform 11. The side of the roller 12 is attached to the inside of the transmission tube 4. The roller 12 will rotate on the surface of the transmission tube 4 during the upward movement. A push rod 13 is fixedly connected to the side of the roller 12. The reciprocating screw 9 can drive the platform 11 to reciprocate in the vertical direction.

[0032] When the push rod 13 moves to the opening of the transmission tube 4, it will squeeze out the sealing cover 15 that is stored in the transmission tube 4 by the telescopic spring 14, so that the sealing cover 15 is separated from the side of the transmission tube 4. At this time, the opening of the transmission tube 4 changes from the sealed and closed state of the sealing cover 15 to the state of the sealing cover 15 being squeezed out and opened.

[0033] Combined with appendix Figure 6When motor 5 drives the reciprocating screw 9 connected to transmission rod 6 to rotate, the connection between the threaded groove on the side of the reciprocating screw 9 and the limiting protrusion inside the platform 11 causes the platform 11 to move up and down on the outside of the reciprocating screw 9. During the movement, the roller 12 inside the platform 11 moves against the inner wall of the transmission pipe 4, causing the roller 12 to rotate. Subsequently, the push rod 13 on the side of the roller 12 will contact several sets of openings on the side of the transmission pipe 4 after the roller 12 rotates. The sealing cover 15 at the opening is squeezed and detached from the outside of the transmission pipe 4 by the protruding structure of the push rod 13, thereby opening the opening at a certain position on the outside of the transmission pipe 4. At the same time, in conjunction with the rotation of fan blade 7, the air in the open opening of the transmission pipe 4 is drawn into the transmission pipe 4 and squeezed into the end of the detection end 2 through the flow pipe 35 for detection. This realizes air detection at different heights, meets the detection requirements of the equipment at different heights, and makes the detection of the equipment more accurate.

[0034] In a specific implementation of this invention, the side of the roller 12 is in contact with the inner wall of the transmission pipe 4, and the distance between the upper and lower openings on the side of the transmission pipe 4 is equal to the circumference of the roller 12. That is, when the push rod 13 moves in a circular motion with the outer side of the roller 12, it can only contact the opening on the side of the transmission pipe 4. During the rotation of the push rod 13 connected to the side of the roller 12, it can squeeze into the inner opening of the transmission pipe 4. When the platform 11 moves to the side of the sealing cover 15 with one set of openings, the position of the push rod 13 on the side of the roller 12 is squeezed against the back of the sealing cover 15, causing it to fall out. The sealing covers 15 in other parts are in a contracted state due to the elastic force of the telescopic spring 14, thereby detecting the air at the position of the platform 11.

[0035] In a specific implementation of this utility model, a reciprocating threaded groove is provided on the outer side of the reciprocating screw 9, and a limiting protrusion is provided at the contact part between the platform 11 and the reciprocating screw 9. The limiting protrusion is embedded in the reciprocating threaded groove on the outer side of the reciprocating screw 9. By utilizing the interlocking effect of the limiting protrusion inside the threaded groove, when the reciprocating screw 9 rotates with the transmission rod 6, it can drive the platform 11 to move up and down on the outer side of the reciprocating screw 9, thereby driving the roller 12 to rotate and move upward against the inner wall of the transmission pipe 4.

[0036] In a specific implementation of this utility model, the outer side of the platform 11 slides against the inner wall of the transmission pipe 4 to prevent air from being sucked from the bottom of the transmission pipe 4. The central axis of the limiting rod 10 is arranged perpendicular to the platform 11, and the setting of the limiting rod 10 can limit the movement of the platform 11.

[0037] The working principle of this utility model is as follows: To ensure that when detecting air at different heights, the operator only needs to directly insert the connecting device 3 onto the outside of the detection end 2. The clamping plate 31 is used to clamp the device and fit against the periphery of the detection end 2. Then, the clamping plate 31 is rotated using the nut 32 to further tighten the connection between the clamping plate 31 and the detection end 2. Subsequently, the gap between the clamping plate 31 and the base 34 allows the air at the port of the detection end 2 to directly contact and be detected. At the same time, the air at different positions inside the transmission pipe 4 is blown through the flow pipe 35 to the port of the detection end 2 by the blowing force of the fan blade 7. This allows for the detection of air at different heights without changing the position of the device.

[0038] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A detection device for sampling petrochemical gases, comprising a device body (1), wherein a detection end (2) for detecting gases is installed at the bottom of the device body (1), characterized in that: A connecting device (3) is fitted onto the outer side of the detection end (2). The connecting device (3) includes a clamping piece (31). The inner wall of the clamping piece (31) is fitted onto the periphery of the detection end (2). A nut (32) is rotatably connected to the outer side of the clamping piece (31). A connecting shaft (33) is fixedly connected to the bottom end of the clamping piece (31). A base (34) is fixedly connected to the bottom end of the connecting shaft (33). A transmission pipe (4) connected to the detection end (2) is installed on the side of the connecting device (3). Several sets of openings are opened on the side of the transmission pipe (4), and a telescopic spring (14) is installed on the inner wall of the opening. A sealing cap (15) is fixedly connected to the end of the telescopic spring (14) away from the transmission pipe (4).

2. The detection device for petrochemical gas sampling according to claim 1, characterized in that: A flow tube (35) is fixedly connected to the side of the base (34). The end of the flow tube (35) away from the base (34) is connected through the interior of the transmission tube (4). The transmission tube (4) and the base (34) are arranged in a parallel direction.

3. The detection device for petrochemical gas sampling according to claim 1, characterized in that: The clamping piece (31) has threads on its outer side, the nut (32) has a threaded groove on its inner wall, and the clamping piece (31) has textures on its inner side.

4. The detection device for petrochemical gas sampling according to claim 2, characterized in that: A motor (5) is installed on the top of the transmission pipe (4). The output shaft of the motor (5) is fixedly connected to a transmission rod (6). A fan blade (7) is provided on the periphery of the end of the transmission rod (6), and the fan blade (7) is fitted inside the transmission pipe (4). A fixing ring (8) is fixedly connected to the inner wall of the transmission pipe (4). The fixing ring (8) is located at the lower end of the connection between the transmission pipe (4) and the flow pipe (35).

5. The detection device for petrochemical gas sampling according to claim 4, characterized in that: The end of the transmission rod (6) is fixedly connected to a reciprocating screw (9), and the bottom end of the fixed ring (8) is fixedly connected to two sets of parallel limit rods (10). The outer side of the limit rod (10) is connected to a platform (11), and the side of the platform (11) is rotatably connected to a roller (12). The side of the roller (12) is fixedly connected to a push rod (13). The reciprocating screw (9) can drive the platform (11) to reciprocate in the vertical direction.

6. The detection device for petrochemical gas sampling according to claim 5, characterized in that: The side of the roller (12) is attached to the inner wall of the transmission tube (4). The distance between the upper and lower openings on the side of the transmission tube (4) is equal to the circumference of the roller (12). The push rod (13) connected to the side of the roller (12) can be squeezed into the inner opening of the transmission tube (4) during rotation.

7. The detection device for petrochemical gas sampling according to claim 5, characterized in that: The reciprocating screw (9) has a reciprocating thread groove on its outer side. The platform (11) and the reciprocating screw (9) are fitted with a limiting protrusion, which is embedded in the reciprocating thread groove on the outer side of the reciprocating screw (9).

8. The detection device for petrochemical gas sampling according to claim 7, characterized in that: The outer side of the platform (11) slides against the inner wall of the transmission pipe (4), and the central axis of the limiting rod (10) is arranged perpendicular to the platform (11).

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