A canned transport gas detection sampling device

Abstract

The present invention relates to the technical field of detectors, and discloses a canned transport gas detection sampling device, comprising a main cylinder, with auxiliary cylinders installed at the upper and lower ends of the main cylinder respectively through a connecting part, a main shaft rotatably installed inside the main cylinder, auxiliary shafts connected to transmission parts at the upper and lower ends of the main shaft respectively, and the auxiliary shaft rotatably installed inside the auxiliary cylinder, a main cavity fixedly installed on the main cylinder, an auxiliary cavity fixedly installed on the auxiliary cylinder, and multiple sampling cylinders connected and installed outside the main cavity and the auxiliary cavity respectively, sampling mechanisms are respectively arranged inside the sampling cylinders, driving mechanisms are respectively arranged inside the main cavity and the auxiliary cavity, an operating mechanism is installed on the auxiliary cylinder at the uppermost position, and a fixed adsorption mechanism is also installed on the auxiliary cylinder at the lowermost position. The present invention realizes the change of the distance of the entire sampling device in the vertical direction of sampling, and cooperates with multiple horizontally arranged sampling barrels to realize the sampling and detection needs of multi-level gas, and further improves the sampling accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of detectors, and in particular to a canned transport gas detection and sampling device. Background Art

[0002] Gas detector is an instrument tool for detecting gas leakage concentration, including portable gas detector, handheld gas detector, fixed gas detector, online gas detector, etc. Gas sensors are mainly used to detect the types of gases in the environment. Gas sensors are sensors used to detect the composition and content of gases.

[0003] In the existing process of filling and transporting gas, the concentration of the gas and whether the gas undergoes chemical changes greatly affect the safety of the transported gas. The existing detection device mainly relies on manually inserting the detector into the filling box for detection. However, when the detector is manually inserted into the filling box, the transported gas will corrode and damage the human arm. At the same time, the distance that the human arm can be inserted is limited, resulting in inaccurate concentration detection. Therefore, further improvement is needed. Summary of the invention

[0004] The object of the present invention is to provide a bottled transport gas detection sampling device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A sampling device for detecting and sampling canned transport gas comprises a main cylinder, wherein the upper and lower ends of the main cylinder are respectively provided with secondary cylinders through connecting parts, a main shaft is rotatably installed inside the main cylinder, the upper and lower ends of the main shaft are respectively connected with secondary shafts through transmission parts, and the secondary shaft is rotatably installed inside the secondary cylinder, a main cavity is fixedly installed on the main cylinder, and a secondary cavity is fixedly installed on the secondary cylinder, a plurality of sampling cylinders are respectively connected and installed outside the main cavity and the secondary cavity, a sampling barrel is connected and installed at one end of the outer side of the sampling barrel, sampling mechanisms are respectively arranged inside the sampling cylinders, driving mechanisms for driving the sampling mechanisms are respectively arranged inside the main cavity and the secondary cavity, an operating mechanism for driving the plurality of driving mechanisms is installed on the secondary cylinder at the uppermost position, and a fixed adsorption mechanism is also installed on the secondary cylinder at the lowermost position.

[0007] As an improved solution of the present invention: the sampling mechanism includes a baffle ring fixedly installed on the inner wall of the sampling tube, a sampling shaft is slidably installed on the baffle ring, a connecting tube is fixedly installed on one end of the sampling shaft, a baffle plate is fixedly installed on the other end, a baffle ball is fixedly installed on the baffle plate, the connecting tube is provided with a connecting hole connected to the interior of the sampling barrel, and the side wall of the sampling tube is provided with an air guide hole that cooperates with the connecting hole.

[0008] As an improved solution of the present invention: a sampling spring is sleeved and installed on the outer side of the sampling shaft between the baffle plate and the baffle ring.

[0009] As an improved solution of the present invention: a vacuum valve is installed at the upper side of the sampling barrel, and an air extraction valve is installed at the bottom of the sampling barrel.

[0010] As an improved solution of the present invention: the driving mechanism includes driving wheels fixedly mounted on the main shaft and the secondary shaft respectively, and driving protrusions and driving grooves are alternately arranged on the outer side of the driving wheel, and the driving protrusions and driving grooves are in synchronous contact and cooperation with the blocking ball.

[0011] As an improved solution of the present invention: the operating mechanism includes an operating disk fixed on the top of the uppermost auxiliary cylinder, a worm gear is rotatably mounted on the operating disk, the worm gear is coaxially fixedly connected to the auxiliary shaft at the uppermost position, and operating frames are also symmetrically mounted on the operating disk, an operating shaft is rotatably mounted between the operating frames, the operating shaft is provided with worm gears, the worm gears and the worm gear are meshed with each other, an operating motor is mounted on one of the operating frames, and the output end of the operating motor is connected to the operating shaft.

[0012] As an improved solution of the present invention: the fixed adsorption mechanism includes an adsorption cylinder fixed at the bottommost position, an adsorption plug is slidably installed inside the adsorption cylinder, a threaded cylinder is fixedly installed on the adsorption plug, a threaded column is installed inside the threaded cylinder through a threaded structure, the threaded column is coaxially fixedly connected to the bottommost secondary shaft, and an adsorption disk is installed at the bottom of the adsorption cylinder through an adsorption hole.

[0013] As an improved solution of the present invention: the connecting portion includes threaded areas respectively arranged at the end positions of the connection between the main shaft and the auxiliary shaft, and a connecting cylinder is installed outside the threaded area.

[0014] As an improved solution of the present invention: the transmission part includes a transmission groove arranged at the end position of the main shaft and a transmission bar fixed at the end position of the secondary shaft, and the transmission bar is slidably arranged inside the transmission groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Through the cooperation between the connecting part and the transmission part, the change of the distance of the entire sampling device in the vertical direction of sampling is realized, and the cooperation between the multiple horizontally arranged sampling barrels realizes the sampling and detection needs of multi-level gas, further improving the sampling accuracy;

[0017] 2. Through the cooperation of the operating mechanism, driving mechanism and sampling mechanism, the filling and transporting gas can be carried out synchronously during the sampling process, avoiding the change of sampling concentration caused by gas disturbance and ensuring the sampling accuracy;

[0018] 3. By setting a fixed adsorption mechanism at the bottom, the whole sampling device can maintain a stable state during the sampling process, which greatly improves the sampling quality and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall front view structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall bottom-up structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the top view of the transmission part in the present invention;

[0022] Figure 4 It is a schematic diagram of the main cylinder in the present invention when viewed from above;

[0023] Figure 5 It is a schematic diagram of the overall vertical cross-sectional structure of the present invention;

[0024] Figure 6 It is a schematic diagram of the overall horizontal cross-sectional structure of the present invention;

[0025] Figure 7 for Figure 1 A is a schematic diagram of the partially enlarged structure of the middle part;

[0026] Figure 8 for Figure 5 A schematic diagram of the partially enlarged structure of B in the middle;

[0027] Fig. 9 for Figure 5 A schematic diagram of the partially enlarged structure of C in the middle;

[0028] Fig.10 for Figure 6 Schematic diagram of the partially enlarged structure of D in the figure.

[0029] In the figure: 1. main cylinder; 2. main cavity; 3. connecting cylinder; 4. auxiliary cylinder; 5. threaded area; 6. sampling cylinder; 7. sampling barrel; 8. vacuum valve; 9. operating disk; 10. driving convex block; 11. adsorption cylinder; 12. adsorption disk; 13. adsorption hole; 14. air extraction valve; 15. auxiliary cavity; 16. main shaft; 17. auxiliary shaft; 18. transmission bar; 19. air guide hole; 20. operating shaft; 21. worm gear; 22. operating frame; 23. operating motor; 24. driving wheel; 25. connecting cylinder; 26. connecting hole; 27. sampling shaft; 28. retaining ring; 29. ​​sampling spring; 30. retaining disk; 31. retaining ball; 32. threaded column; 33. threaded cylinder; 34. adsorption plug; 35. driving groove; 36. worm gear. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Example

[0034] See also Figures 1 to 10In an embodiment of the present invention, a canned transport gas detection sampling device comprises a main cylinder 1, wherein the upper and lower ends of the main cylinder 1 are respectively provided with a secondary cylinder 4 through a connecting part, a main shaft 16 is rotatably installed inside the main cylinder 1, and the upper and lower ends of the main shaft 16 are respectively connected with a secondary shaft 17 through a transmission part, and the secondary shaft 17 is rotatably installed inside the secondary cylinder 4, a main cavity 2 is fixedly installed on the main cylinder 1, and a secondary cavity 15 is fixedly installed on the secondary cylinder 4, and a plurality of sampling cylinders 6 are respectively connected and installed outside the main cavity 2 and the secondary cavity 15, and a sampling barrel 7 is connected and installed at one end of the outer side of the sampling barrel 7, and a sampling mechanism is respectively arranged inside the sampling cylinder 6, and a driving mechanism for driving the sampling mechanism is respectively arranged inside the main cavity 2 and the secondary cavity 15, and an operating mechanism for driving the plurality of driving mechanisms is installed on the secondary cylinder 4 at the uppermost position. During sampling, the driving mechanism is operated through the operating mechanism, and then the plurality of sampling mechanisms are operated synchronously, so as to ensure that the sampling barrels 7 at different positions sample gases in different areas, and finally ensure the quality of gas sampling.

[0035] The sampling mechanism includes a baffle ring 28 fixedly mounted on the inner wall of the sampling tube 6, a sampling shaft 27 is slidably mounted on the baffle ring 28, a connecting tube 25 is fixedly mounted on one end of the sampling shaft 27, a baffle plate 30 is fixedly mounted on the other end, a baffle ball 31 is fixedly mounted on the baffle plate 30, the connecting tube 25 is provided with a connecting hole 26 that is interconnected with the interior of the sampling barrel 7, and the side wall of the sampling tube 6 is provided with an air guide hole 19 that cooperates with the connecting hole 26.

[0036] At the same time, in order to ensure that the connecting tube 25 can be reset in the reverse direction so that the sampling barrel 7 can form a sealing effect after the sampling gas is finished, a sampling spring 29 is sleeved and installed on the outer side of the sampling shaft 27 between the baffle plate 30 and the baffle ring 28.

[0037] The working principle of the above-mentioned sampling mechanism is: during the movement of the sampling shaft 27, the connecting tube 25 will move synchronously in a straight line along the inside of the sampling tube 6. When the connecting hole 26 on the connecting tube 25 and the air guide hole 19 on the sampling barrel 7 are located at the same vertical axis position, the gas side enters into the connecting hole 26 through the air guide hole 19, and finally enters into the connecting tube 25, and finally enters into the sampling barrel 7; and when the sampling shaft 27 moves in the reverse direction, the air guide hole 19 and the connecting hole 26 are no longer connected, and the gas inside the sampling barrel 7 is sealed.

[0038] It should be pointed out that, in this embodiment, in order to ensure that the sampling barrel 7 on the same horizontal plane can sample gases in different horizontal areas, the positions of the gas guide holes 19 arranged on the sampling tube 6 are different, and the corresponding setting positions of the connecting holes 26 are also changed accordingly, further ensuring the quality of the sampling gas of the entire sampling device.

[0039] In addition, in order to enable the sampling barrel 7 to quickly sample gas, a vacuum valve 8 is installed and connected to the upper side of the sampling barrel 7, and an air extraction valve 14 is installed and connected to the bottom of the sampling barrel 7. Before sampling gas in the sampling barrel 7, a vacuum pump is connected to the sampling barrel 7 through the vacuum valve 8 to perform a vacuum operation on the sampling barrel 7, thereby ensuring that the sampling barrel 7 can quickly sample gas after entering the gas tank, and when the sampling gas is finished, the air extraction valve 14 is used to quickly detect the previously extracted gas.

[0040] In order to ensure that multiple sampling mechanisms can work synchronously at the same time, in this embodiment, the driving mechanism includes a driving wheel 24 fixedly mounted on the main shaft 16 and the secondary shaft 17, and the driving protrusion 10 and the driving groove 35 are alternately arranged on the outside of the driving wheel 24. The driving protrusion 10 and the driving groove 35 are synchronously contacted and matched with the blocking ball 31. By using the transmission part, when the main shaft 16 rotates, the multiple secondary shafts 17 can rotate synchronously, thereby driving the multiple driving wheels 24 to rotate synchronously. When the driving protrusion 10 on the driving wheel 24 contacts the blocking ball 31, the sampling shaft 27 at the corresponding position drives the connecting tube 25 to move toward the sampling barrel 7, and finally the connecting hole 26 is connected with the air guide hole 19, so as to achieve the purpose of gas inflow and collection into the sampling barrel 7.

[0041] In addition, in order to enable multiple driving wheels 24 to maintain their position after rotating to a certain angle, in this embodiment, the operating mechanism includes an operating disk 9 fixed on the top of the uppermost auxiliary cylinder 4, and a worm gear 36 is rotatably mounted on the operating disk 9. The worm gear 36 is coaxially fixedly connected to the auxiliary shaft 17 at the uppermost position. The operating disk 9 is also symmetrically mounted with operating frames 22, and an operating shaft 20 is rotatably mounted between the operating frames 22. The operating shaft 20 is provided with worm gears 21, and the worm gears 21 are meshed with the worm gear 36. An operating motor 23 is mounted on one of the operating frames 22, and the output end of the operating motor 23 is connected to the operating shaft 20.

[0042] The working principle of the above-mentioned operating mechanism is: starting the operating motor 23 to rotate the operating shaft 20, and then under the meshing between the worm shaft teeth 21 and the worm wheel 36, the secondary shaft 17 at the uppermost position rotates a certain angle. At the same time, under the cooperation of the transmission part, the secondary shafts 17 and the main shaft 16 at other positions rotate synchronously. Since the meshing between the worm wheel 36 and the worm shaft teeth 21 will be self-locking, after the above-mentioned angular position is changed, the positions of the multiple drive wheels 24 continue to be maintained.

[0043] In order to change the position between multiple secondary cylinders 4 and the main cylinder 1, so as to meet the needs of gas sampling at different depths, in this embodiment, the connecting portion includes a threaded area 5 respectively arranged at the end position of the connection between the main shaft 16 and the secondary shaft 17, and a connecting cylinder 3 is installed on the outside of the threaded area 5. The transmission portion includes a transmission groove arranged at the end position of the main shaft 16 and a transmission bar 18 fixed at the end position of the secondary shaft 17, and the transmission bar 18 is slidably arranged inside the transmission groove. Through the cooperation of the above structure, not only the distance between the main cylinder 1 and the secondary cylinder 4 can be changed, but also when the above distance is changed, the torque between the main shaft 16 and the secondary shaft 17 can be effectively transmitted. Example

[0044] The present invention also provides another embodiment, which is different from the above embodiment in that a fixed adsorption mechanism is also installed on the lowermost auxiliary cylinder 4. By providing the fixed adsorption mechanism, the entire sampling device can be effectively fixed at the bottom side of the tank body during sampling, thereby ensuring the stability during the gas sampling process and ultimately ensuring the sampling and detection accuracy of the gas.

[0045] Among them, the fixed adsorption mechanism includes an adsorption cylinder 11 fixed at the bottommost position, an adsorption plug 34 is slidably installed inside the adsorption cylinder 11, a threaded cylinder 33 is fixedly installed on the adsorption plug 34, a threaded column 32 is installed inside the threaded cylinder 33 through a threaded structure, the threaded column 32 is coaxially fixedly connected to the bottommost secondary shaft 17, and an adsorption disk 12 is installed at the bottom of the adsorption cylinder 11 through an adsorption hole 13.

[0046] The working principle of the above-mentioned fixed adsorption mechanism is: when the secondary shaft 17 rotates synchronously, the threaded column 32 will rotate synchronously, and then under the action of the threaded cylinder 33, it will be converted into an upward linear movement of the adsorption plug 34 inside the adsorption cylinder 11, and then under the action of the adsorption hole 13, the adsorption plate 12 is effectively adsorbed on the bottom side of the bottom of the gas tank, ultimately ensuring the stability of the entire sampling device.

[0047] To sum up, when sampling, first, the interior of the sampling barrel 7 is placed in a vacuum environment through the vacuum valve 8, and then, according to the depth of the tank body that needs to be sampled, the position between the main tube 1 and the multiple sub-tubes 4 is changed through the fastening relationship between the threaded area 5 and the connecting tube 3, and then the entire sampling device is placed inside the gas tank, and then the operating motor 23 is started. Under the action of the operating mechanism, multiple driving mechanisms work synchronously, and then with the cooperation of the sampling mechanism, the gas at the corresponding depth and horizontal position enters the sampling barrel 7 at the corresponding position, and then the operating motor 23 is started in reverse to make the sampling barrel 7 in a closed state, and then the entire sampling device is taken out, and the gas is taken out for testing through the air extraction valve 14. The whole operation process is quick and convenient.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A canned transport gas detection sampling device, comprising a main cylinder (1), characterized in that: The upper and lower ends of the main cylinder (1) are respectively provided with a secondary cylinder (4) through a connecting part. A main shaft (16) is rotatably installed inside the main cylinder (1). The upper and lower ends of the main shaft (16) are respectively connected to a secondary shaft (17) through a transmission part. The secondary shaft (17) is rotatably installed inside the secondary cylinder (4). A main cavity (2) is fixedly installed on the main cylinder (1). A secondary cavity (15) is fixedly installed on the secondary cylinder (4). A plurality of sampling cylinders (6) are respectively connected and installed outside the main cavity (2) and the secondary cavity (15). A sampling barrel (7) is connected and installed at one end of the outer side of the sampling barrel (7). A sampling mechanism is respectively arranged inside the sampling cylinder (6). A driving mechanism for driving the sampling mechanism is respectively arranged inside the main cavity (2) and the secondary cavity (15). An operating mechanism for driving the plurality of driving mechanisms is installed on the secondary cylinder (4) at the uppermost position. A fixed adsorption mechanism is also installed on the secondary cylinder (4) at the lowermost position. The sampling mechanism comprises a retaining ring (28) fixedly mounted on the inner wall of the sampling tube (6), a sampling shaft (27) being slidably mounted on the retaining ring (28), a connecting tube (25) being fixedly mounted on one end of the sampling shaft (27), a retaining plate (30) being fixedly mounted on the other end, a retaining ball (31) being fixedly mounted on the retaining plate (30), a connecting hole (26) being arranged on the connecting tube (25) and being interconnected with the interior of the sampling barrel (7), and an air guide hole (19) being arranged on the side wall of the sampling tube (6) and being matched with the connecting hole (26); A sampling spring (29) is sleeved and installed on the outer side of the sampling shaft (27) between the baffle plate (30) and the baffle ring (28); The upper side of the sampling barrel (7) is connected to a vacuum valve (8) and installed thereon, and the bottom of the sampling barrel (7) is connected to a gas extraction valve (14). The driving mechanism comprises a driving wheel (24) fixedly mounted on the main shaft (16) and the secondary shaft (17), and driving convex blocks (10) and driving grooves (35) are alternately arranged on the outer side of the driving wheel (24), and the driving convex blocks (10) and the driving grooves (35) are synchronously contacted and matched with the blocking balls (31); The operating mechanism comprises an operating disk (9) fixed on the top of the uppermost auxiliary cylinder (4), a worm gear (36) being rotatably mounted on the operating disk (9), the worm gear (36) being coaxially fixedly connected to the auxiliary shaft (17) at the uppermost position, an operating frame (22) being symmetrically mounted on the operating disk (9), an operating shaft (20) being rotatably mounted between the operating frames (22), a worm gear (21) being provided on the operating shaft (20), the worm gear (21) being meshed with the worm gear (36), an operating motor (23) being mounted on one of the operating frames (22), the output end of the operating motor (23) being connected to the operating shaft (20); The fixed adsorption mechanism comprises an adsorption cylinder (11) fixed at the bottommost position, an adsorption plug (34) is slidably mounted inside the adsorption cylinder (11), a threaded cylinder (33) is fixedly mounted on the adsorption plug (34), a threaded column (32) is mounted inside the threaded cylinder (33) via a threaded structure, the threaded column (32) is coaxially fixedly connected to the auxiliary shaft (17) at the bottommost side, and an adsorption disk (12) is mounted at the bottom of the adsorption cylinder (11) via an adsorption hole (13).

2. A bottled transport gas detection sampling device according to claim 1, characterized in that: The connection portion comprises threaded areas (5) respectively arranged at the end positions of the connection between the main shaft (16) and the secondary shaft (17), and a connection cylinder (3) is installed outside the threaded area (5).

3. A bottled transport gas detection sampling device according to claim 1, characterized in that: The transmission part comprises a transmission groove arranged at the end position of the main shaft (16) and a transmission bar (18) fixed at the end position of the secondary shaft (17), and the transmission bar (18) is slidably arranged inside the transmission groove.

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