Nitrogen storage pressure detection device

Abstract

The utility model provides a nitrogen storage pressure detection device which comprises a pressure detection assembly installed on the outer wall of a nitrogen storage tank through a quick connecting piece, the pressure detection assembly comprises a shell, a multi-section telescopic pointer and a fixing plate, and the fixing plate is fixedly connected to the inner wall of the shell. The multi-section telescopic pointer is rotationally connected to the inner wall of the fixing plate through a rotating shaft, a guide column is fixedly connected to the bottom of the end, away from the rotating shaft, of the multi-section telescopic pointer, a guide groove is formed in the inner wall of the fixing plate, the guide column is movably matched in the guide groove in a limiting mode, and multiple sets of scale marks are arranged on the outer wall of the fixing plate. A rack is meshed with the outer wall of the gear and is in sliding fit with the inner wall of the shell; the guide groove is arranged to provide a moving path for the guide column, and the multi-section telescopic pointer moves and stretches along with the guide column, so that the rotating angle of the multi-section telescopic pointer is increased, the manual naked eye error is reduced, and the nitrogen storage pressure detection precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen storage, in particular to a nitrogen storage pressure detection device. Background Art

[0002] Nitrogen is a colorless, odorless, non-toxic inert gas. The common storage method is to compress nitrogen into a high-pressure gas cylinder. During its storage process, the internal pressure of the high-pressure gas cylinder needs to be tested to ensure that the pressure in the nitrogen storage tank is within a safe range to prevent safety accidents caused by excessive or low pressure.

[0003] After searching, the Chinese patent publication number CN218599460U discloses a pressure detection device for a high-purity nitrogen storage tank, including an outer tank body, the inner sleeve of the outer tank body is connected to the inner tank body, the bottom end of the inner part of the outer tank body is fixedly installed with a support seat, the top of the support seat is fixedly connected to the bottom end of the inner tank body, the surface of the inner tank body is wrapped with an annular cooling pipe, the top of the inner tank body is opened with a liquid inlet, the inside of the liquid inlet is fixedly installed with a liquid injection pipe, the liquid injection pipe is connected with the top of the outer tank body, the inside of the liquid injection pipe is fixedly installed with a solenoid valve, and the side of the top of the outer tank body is fixedly installed with a pressure detector.

[0004] The above patent has the following deficiencies: it uses a pressure detector to detect the internal pressure of the Gaochun nitrogen storage tank, but the traditional pressure detector pointer has a rotation angle of 360°, and there are errors when people read the data with the naked eye, resulting in low data reading accuracy.

[0005] To this end, a nitrogen storage pressure detection device is proposed. Utility Model Content

[0006] In view of this, the embodiments of the present invention hope to provide a nitrogen storage pressure detection device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0007] The technical solution of the embodiment of the utility model is achieved as follows: a nitrogen storage pressure detection device, including a pressure detection component installed on the outer wall of the nitrogen storage tank through a quick connector, the pressure detection component includes an outer shell, a multi-section telescopic pointer and a fixed plate, the fixed plate is fixedly connected to the inner wall of the outer shell, the multi-section telescopic pointer is rotatably connected to the inner wall of the fixed plate through a rotating shaft, a guide column is fixedly connected to the bottom of one end of the multi-section telescopic pointer away from the rotating shaft, a guide groove is opened on the inner wall of the fixed plate, the guide column is movably limited and matched in the guide groove, and a plurality of groups of scale lines are arranged on the outer wall of the fixed plate.

[0008] In some embodiments, a gear is fixedly connected to the outer wall of the rotating shaft, a rack is meshed with the outer wall of the gear, and the rack is slidably matched with the inner wall of the shell.

[0009] In some embodiments, a connecting rod is fixedly connected to the outer wall of one end of the rack, a piston is fixed to the other end of the connecting rod, a fixed tube is slidably contacted with the outer wall of the piston, and the fixed tube is fixedly connected to the inner wall of the shell.

[0010] In some embodiments, a torsion spring is fixed to the inner wall of the shell, the other end of the torsion spring is fixedly connected to the outer wall of the rotating shaft, and an air inlet passage connected to the fixed pipe is opened on the inner wall of the shell.

[0011] In some embodiments, the quick connector includes a connecting tube 1 and a knob, the connecting tube 1 is fixedly connected to the outer wall of the shell, and the connecting tube 1 is interconnected with the air intake channel.

[0012] In some embodiments, the knob is movably fitted to the outer wall of connecting tube 1, the inner wall of the knob is connected to connecting tube 2 via a thread, and the other end of connecting tube 2 is fixed and connected to the inner wall of the nitrogen storage tank.

[0013] In some embodiments, the inner wall of the second connecting tube is provided with a plurality of radially arranged fan-shaped rubber sheets, all of which are closed to form a complete circle, and a hollow limiting plate is fixedly connected to the inner wall of the fan-shaped rubber sheet located at the top of the fan-shaped rubber sheet.

[0014] In some embodiments, the connecting tube is fixedly connected to a bottom portion and is connected to a plug, and the plug is movably plugged into the inner wall of the hollow limiting plate.

[0015] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0016] 1. A nitrogen storage pressure detection device, which provides a moving path for a guide column by setting a guide groove, and a multi-section telescopic pointer moves and retracts as the guide column moves, thereby increasing the rotation angle of the multi-section telescopic pointer, reducing artificial naked eye errors, and improving the accuracy of nitrogen storage pressure detection.

[0017] 2. A nitrogen storage pressure detection device, which is provided with a connecting pipe 1, a knob and a connecting pipe 2, and utilizes the threaded cooperation of the knob and the connecting pipe 2 to realize the quick connection between the pressure detection component and the nitrogen storage tank, thereby improving the convenience of using the device, and the self-locking characteristic of the thread improves the installation stability of the pressure detection component.

[0018] 3. A nitrogen storage pressure detection device, which provides a fan-shaped rubber sheet and a hollow limiting plate, and uses the hollow limiting plate to limit the fan-shaped rubber sheet, so that the fan-shaped rubber sheet can only be opened in one direction, and an intubation tube is provided so that only when the connecting pipe 1 and the connecting pipe 2 are connected, the nitrogen inside the nitrogen storage tank can enter the air inlet channel and the fixed pipe through the intubation tube, thereby avoiding leakage of the nitrogen storage tank and further improving the accuracy of nitrogen storage pressure detection.

[0019] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is the main structural diagram of the utility model;

[0022] Figure 2 It is a front view of the pressure detection assembly and the quick connection assembly of the utility model;

[0023] Figure 3 This is a front view of the fixed plate structure of the utility model;

[0024] Figure 4 This is a cross-sectional view of the housing of the utility model;

[0025] Figure 5 It is an enlarged schematic diagram of the structure at A of the utility model;

[0026] Figure 6 This is a schematic diagram of the fan-shaped rubber sheet of the utility model in an open state;

[0027] Figure 7 It is a schematic diagram of the sector-shaped rubber sheets of the utility model in the combined state.

[0028] Reference numerals:

[0029] 1. Pressure detection component; 2. Quick connector; 3. Housing; 4. Multi-section telescopic pointer; 5. Rotating shaft; 6. Fixed plate; 7. Scale line; 8. Guide column; 9. Guide groove; 10. Inlet channel; 11. Gear; 12. Torsion spring; 13. Rack; 14. Piston; 15. Connecting rod; 16. Fixed tube; 17. Connecting tube 1; 18. Knob; 19. Insert tube; 20. Connecting tube 2; 21. Fan-shaped rubber sheet; 22. Hollow limit plate. DETAILED DESCRIPTION

[0030] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0031] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0033] Embodiment 1:

[0034] like Figure 1-3 As shown, a nitrogen storage pressure detection device includes a pressure detection component 1 installed on the outer wall of a nitrogen storage tank through a quick connector 2.

[0035] The pressure detection assembly 1 includes a shell 3, a multi-section telescopic pointer 4 and a fixed plate 6. The fixed plate 6 is fixedly connected to the inner wall of the shell 3. The multi-section telescopic pointer 4 is rotatably connected to the inner wall of the fixed plate 6 through a rotating shaft 5. A guide column 8 is fixedly connected to the bottom of one end of the multi-section telescopic pointer 4 away from the rotating shaft 5. A guide groove 9 is opened on the inner wall of the fixed plate 6. The guide column 8 is movably limited and fitted in the guide groove 9, and a plurality of groups of scale lines 7 are arranged on the outer wall of the fixed plate 6.

[0036] The multi-section telescopic pointer 4 is driven to rotate by the rotating shaft 5. After the multi-section telescopic pointer 4 rotates one circle, the guide column 8 moves toward the inner circle along the path provided by the guide groove 9, so that one section of the multi-section telescopic pointer 4 is recovered. Therefore, the total rotation angle of the multi-section telescopic pointer 4 can be obtained according to the number of telescopic sections of the multi-section telescopic pointer 4 and the current pointing position of the multi-section telescopic pointer 4, thereby obtaining the current pressure value in the nitrogen storage tank.

[0037] The device provides a moving path for the guide column 8 by setting a guide groove 9, and the multi-section telescopic pointer 4 moves and retracts with the guide column 8, thereby increasing the rotation angle of the multi-section telescopic pointer 4, reducing artificial naked eye errors, and improving the detection accuracy of nitrogen storage pressure.

[0038] like Figure 4 , Figure 5As shown, a gear 11 is fixedly connected to the outer wall of the rotating shaft 5 , a rack 13 is meshed on the outer wall of the gear 11 , and the rack 13 is slidably matched with the inner wall of the housing 3 .

[0039] The outer wall of one end of the rack 13 is fixedly connected with a connecting rod 15 , and the other end of the connecting rod 15 is fixed with a piston 14 . The outer wall of the piston 14 is in sliding contact with a fixing pipe 16 , and the fixing pipe 16 is fixedly connected to the inner wall of the housing 3 .

[0040] A torsion spring 12 is fixed to the inner wall of the housing 3 , and the other end of the torsion spring 12 is fixedly connected to the outer wall of the rotating shaft 5 . An air intake passage 10 communicating with a fixed pipe 16 is opened on the inner wall of the housing 3 .

[0041] When nitrogen enters the fixed tube 16 from the intake passage 10, the piston 14 is pushed to slide along the inner wall of the fixed tube 16, thereby using the connecting rod 15 to drive the rack 13 to move linearly. Since the rack 13 and the gear 11 are meshed with each other, the gear 11 drives the rotating shaft 5 and the multi-section telescopic pointer 4 to rotate, and at this time the torsion spring 12 undergoes elastic deformation. When there is no need to detect the nitrogen storage pressure, the device is separated from the nitrogen storage tank, and no nitrogen enters the intake passage 10 and the fixed tube 16. At this time, the torsion spring 12 uses its own elasticity to drive the rotating shaft 5 to rotate in the opposite direction, thereby driving the multi-section telescopic pointer 4 to reset so that it can be used again.

[0042] like Figure 6 and Figure 7 As shown, the quick connector 2 includes a connecting pipe 17 and a knob 18 . The connecting pipe 17 is fixedly connected to the outer wall of the housing 3 , and the connecting pipe 17 is communicated with the air intake passage 10 .

[0043] The knob 18 is movably matched with the outer wall of the connecting pipe 17, and the inner wall of the knob 18 is connected to the connecting pipe 20 through a thread, and the other end of the connecting pipe 20 is fixed and connected to the inner wall of the nitrogen storage tank.

[0044] When it is necessary to connect the pressure detection assembly 1 to the nitrogen storage tank, align the open end of the knob 18 with the top of the connecting tube 20, hold the outer shell 3 with one hand, and rotate the knob 18 with the other hand to drive the connecting tube 17 closer to the connecting tube 20 until the bottom of the connecting tube 17 contacts the top of the connecting tube 20, thereby completing the connection between the pressure detection assembly 1 and the nitrogen storage tank.

[0045] The device is provided with a connecting tube 17, a knob 18 and a connecting tube 20, and utilizes the threaded cooperation of the knob 18 and the connecting tube 20 to realize a quick connection between the pressure detection component 1 and the nitrogen storage tank, thereby improving the convenience of using the device, and the self-locking characteristic of the thread improves the installation stability of the pressure detection component 1.

[0046] Embodiment 2:

[0047] A nitrogen storage pressure detection device, this embodiment makes the following improvements on the basis of embodiment 1, such as Figure 5 and Figure 6 As shown:

[0048] The inner wall of the second connecting pipe 20 is provided with a plurality of radially arranged sector-shaped rubber sheets 21 , all the sector-shaped rubber sheets 21 are closed to form a complete perfect circle, and a hollow limiting plate 22 is fixedly connected to the inner wall of the sector-shaped rubber sheet 21 located at the top of the sector-shaped rubber sheet 21 .

[0049] The bottom of the connecting pipe 17 is fixedly connected and communicated with an insert pipe 19 , and the insert pipe 19 is movably inserted into the inner wall of the hollow limiting plate 22 .

[0050] In this embodiment: after connecting tube 1 17 and connecting tube 2 20 are connected, the insert tube 19 is inserted into the hollow limiting plate 22 driven by connecting tube 17 and passes through the center of multiple fan-shaped rubber sheets 21, so that the nitrogen in the nitrogen storage tank can smoothly enter the air intake channel 10 and the fixed tube 16.

[0051] The device is provided with a fan-shaped rubber sheet 21 and a hollow limiting plate 22, and the hollow limiting plate 22 is used to limit the fan-shaped rubber sheet 21, so that the fan-shaped rubber sheet 21 can only be opened in one direction, and the insert pipe 19 is provided so that only when the connecting pipe 17 and the connecting pipe 2 20 are connected, the nitrogen inside the nitrogen storage tank can enter the air inlet channel 10 and the fixed pipe 16 through the insert pipe 19, thereby avoiding leakage of the nitrogen storage tank and further improving the accuracy of nitrogen storage pressure detection.

[0052] Working principle: When performing nitrogen storage pressure detection, first align the open end of the knob 18 with the top of the connecting tube 20, then hold the shell 3 with one hand and rotate the knob 18 with the other hand to drive the connecting tube 1 17 to approach the connecting tube 2 20 until the bottom of the connecting tube 1 17 contacts the top of the connecting tube 2 20 to complete the connection between the pressure detection component 1 and the nitrogen storage tank. When the connecting tube 1 17 is connected to the connecting tube 2 20, the cannula 19 is inserted into the inside of the connecting tube 2 20 under the drive of the connecting tube 1 17, and passes through the center of the multiple fan-shaped rubber sheets 21, so that the nitrogen in the nitrogen storage tank can smoothly enter the air intake channel 10 and the fixed tube 16. When the nitrogen enters the fixed tube 16 from the air intake channel 10, the piston 14 is pushed to slide along the inner wall of the fixed tube 16, thereby using the connecting rod 15 to drive the rack 1 3 linear motion, and because the rack 13 and the gear 11 are meshed with each other, the gear 11 drives the rotating shaft 5 and the multi-section telescopic pointer 4 to rotate, and at this time, the torsion spring 12 undergoes elastic deformation. After the multi-section telescopic pointer 4 rotates one circle, the guide column 8 moves toward the inner circle along the path provided by the guide groove 9, so that one section of the multi-section telescopic pointer 4 is recovered, so that the total rotation angle of the multi-section telescopic pointer 4 can be obtained according to the number of telescopic sections of the multi-section telescopic pointer 4 and the current pointing position of the multi-section telescopic pointer 4, so as to obtain the current pressure value in the nitrogen storage tank. When there is no need to detect the nitrogen storage pressure, the device is separated from the nitrogen storage tank, and no nitrogen enters the air inlet channel 10 and the fixed pipe 16. At this time, the torsion spring 12 uses its own elasticity to drive the rotating shaft 5 to rotate in the opposite direction, thereby driving the multi-section telescopic pointer 4 to reset for reuse.

[0053] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A nitrogen storage pressure detection device, comprising a pressure detection assembly (1) mounted on the outer wall of a nitrogen storage tank via a quick connector (2), characterized in that: The pressure detection assembly (1) comprises a housing (3), a multi-section telescopic pointer (4) and a fixed plate (6); the fixed plate (6) is fixedly connected to the inner wall of the housing (3); the multi-section telescopic pointer (4) is rotatably connected to the inner wall of the fixed plate (6) via a rotating shaft (5); a guide column (8) is fixedly connected to the bottom of one end of the multi-section telescopic pointer (4) away from the rotating shaft (5); a guide groove (9) is provided on the inner wall of the fixed plate (6); the guide column (8) is movably limited and fitted in the guide groove (9); and a plurality of groups of scale lines (7) are provided on the outer wall of the fixed plate (6).

2. A nitrogen storage pressure detection device according to claim 1, characterized in that: The outer wall of the rotating shaft (5) is fixedly connected with a gear (11), the outer wall of the gear (11) is meshed with a rack (13), and the rack (13) is slidably matched with the inner wall of the housing (3).

3. A nitrogen storage pressure detection device according to claim 2, characterized in that: The outer wall of one end of the rack (13) is fixedly connected to a connecting rod (15), the other end of the connecting rod (15) is fixed to a piston (14), the outer wall of the piston (14) is slidably contacted with a fixing tube (16), and the fixing tube (16) is fixedly connected to the inner wall of the housing (3).

4. A nitrogen storage pressure detection device according to claim 3, characterized in that: A torsion spring (12) is fixed on the inner wall of the outer shell (3), the other end of the torsion spring (12) is fixedly connected to the outer wall of the rotating shaft (5), and an air intake passage (10) connected to the fixed pipe (16) is opened on the inner wall of the outer shell (3).

5. A nitrogen storage pressure detection device according to claim 1, characterized in that: The quick connector (2) comprises a connecting pipe (17) and a knob (18); the connecting pipe (17) is fixedly connected to the outer wall of the housing (3), and the connecting pipe (17) is communicated with the air intake passage (10).

6. A nitrogen storage pressure detection device according to claim 5, characterized in that: The knob (18) is movably matched with the outer wall of the connecting pipe (17), and the inner wall of the knob (18) is connected to the connecting pipe (20) through a thread, and the other end of the connecting pipe (20) is fixed and connected to the inner wall of the nitrogen storage tank.

7. A nitrogen storage pressure detection device according to claim 6, characterized in that: The inner wall of the second connecting pipe (20) is provided with a plurality of radially arranged fan-shaped rubber sheets (21), all the fan-shaped rubber sheets (21) are closed to form a complete perfect circle, and the inner wall of the fan-shaped rubber sheet (21) located at the top of the fan-shaped rubber sheet (21) is fixedly connected with a hollow limiting plate (22).

8. A nitrogen storage pressure detection device according to claim 7, characterized in that: The bottom of the connecting pipe 1 (17) is fixedly connected and communicated with an insert pipe (19), and the insert pipe (19) is movably inserted into the inner wall of the hollow limiting plate (22).

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