Density meter with good stability

Abstract

The utility model relates to the technical field of gas density detection, and provides a density meter with good stability, which comprises a main case, a main rod is movably embedded in the top of the main case, the top of the main rod is fixedly connected with a lifting plate, the two sides of the main case are fixedly connected with fixing plates, and the fixing plates are fixedly connected with the lifting plate. The inner sides of the two fixing plates are fixedly connected with a sealing shell, the outer surface of the lifting plate is movably embedded in the inner surface of the sealing shell, the outer surface of the main rod is movably embedded in the bottom of the sealing shell, the outer surface of the main rod is fixedly connected with an outward extending plate, and the end, away from the main rod, of the outward extending plate is fixedly connected with an indicating plate. The device is provided with a pressure intensity real-time display structure, the gas density is closely related to the pressure intensity, and the calculation or measurement of the density is more accurately corrected and compensated, so that the gas density detection accuracy is improved, the pressure intensity can be monitored in real time to ensure that the system operates in a safe range, and the safety of the system is improved. And explosion and other dangers caused by too high pressure are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of gas density detection, in particular to a density meter with good stability. Background Art

[0002] The working principle of a gas density meter is usually based on: according to the ideal gas state equation PV=nRT (where P is pressure, V is volume, n is the amount of substance, R is the gas constant, and T is temperature), the density of the gas can be calculated when parameters such as the pressure, temperature, and volume of the gas are known. In industrial fields such as chemical, oil, and natural gas, the density of flammable, explosive, or toxic gases is detected to prevent dangerous situations such as leakage and explosion. The density of ammonia and hydrogen sulfide gases is monitored in real time. Once the safety threshold is exceeded, an alarm is issued and measures are taken in a timely manner to protect the lives of workers and prevent environmental damage.

[0003] However, in the prior art, for example, Chinese publication number: CN220367165U, "A SF6 density meter", the present utility model relates to the field of electric power technology and discloses an SF6 density meter. The present utility model solves the problem of dust easily accumulating on the surface of the existing SF6 density meter. The present utility model can easily protect the density meter body through a protective structure. When in use, the density meter body is more likely to accumulate dust. In this case, the protective cover can be flipped over and placed in front of the density meter body, which can largely prevent dust from accumulating on the surface of the density meter body. When the protective cover is placed in front of the density meter body, the magnet is stuck in the inside of the fixing groove, which can fix the protective cover in front of the density meter body. However, dust may enter through the gap between the protective cover and the density meter body. Therefore, after the protective cover and the density meter body are closed, the micro motor drives the flip arm to rotate.

[0004] However, this device does not have a real-time pressure display structure. The density of the gas is closely related to the pressure, and it is impossible to make more accurate corrections and compensation for the calculation or measurement of the density, thereby improving the accuracy of the gas density detection. At the same time, it is also impossible to monitor the pressure in real time to ensure that the system operates within a safe range and prevent dangers such as explosions caused by excessive pressure. The device does not have a one-way valve structure, and cannot ensure that the gas flows in the predetermined direction, which interferes with the test results, cannot guarantee the accuracy and stability of the test, and cannot maintain the stability of the gas pressure inside the detection device, increasing the impact of pressure fluctuations on the detection accuracy. Utility Model Content

[0005] The purpose of the present utility model is to solve the problems existing in the prior art, that is, the density of the gas is closely related to the pressure, and it is impossible to make more accurate corrections and compensation for the calculation or measurement of the density, thereby improving the accuracy of the gas density detection. At the same time, it is also impossible to monitor the pressure in real time to ensure that the system operates within a safe range and prevent dangers such as explosions caused by excessive pressure. The device is not provided with a one-way valve structure, and it is impossible to ensure that the gas flows in a predetermined direction, which interferes with the detection results, cannot guarantee the accuracy and stability of the detection, cannot maintain the stability of the gas pressure inside the detection device, and increases the impact of pressure fluctuations on the detection accuracy.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a density meter with good stability, comprising a main shell, the top of the main shell is movably embedded with a main rod, the top of the main rod is fixedly connected with a lifting plate, both sides of the main shell are fixedly connected with a fixing plate, the inner sides of the two fixing plates are fixedly connected with a sealing shell, the outer surface of the lifting plate is movably embedded in the inner surface of the sealing shell, the outer surface of the main rod is movably embedded in the bottom of the sealing shell, the outer surface of the main rod is fixedly connected with an extending plate, and the end of the extending plate away from the main rod is fixedly connected with an indicating plate, the top of the main shell is fixedly connected with two lining plates, the tops of the two lining plates are fixedly connected with a force-bearing plate, the outer surface of the lifting plate is movably embedded in the inside of the force-bearing plate, a through groove is opened on the lining plate, and the outer surface of the extending plate is arranged inside the through groove, so that the air pressure after the device is stabilized can be obtained according to the height of the indicating plate.

[0007] As a preferred embodiment, a force-applying plate is fixedly sleeved on the outer surface of the main rod, and a first spring is movably sleeved on the outer surface of the main rod, and the force-applying plate squeezes the first spring above the force-bearing plate.

[0008] As a preferred embodiment, the bottom of the first spring is fixedly connected to the top of the force-bearing plate, and the top of the first spring is fixedly connected to the bottom of the force-applying plate. The force-applying plate squeezes the first spring above the force-bearing plate to achieve stable air outlet of the device.

[0009] As a preferred embodiment, one side of the main housing is connected to an air outlet pipe, and a valve is provided on the outer surface of the air outlet pipe, and the air outlet pipe is sealed by closing the valve.

[0010] As a preferred embodiment, the top of the outlet pipe is connected to a connecting pipe, and one end of the connecting pipe away from the outlet pipe is connected to the top of the sealed shell. When the gas flows through the outlet pipe under the action of fluid pressure, part of the gas will pass through the connecting pipe.

[0011] As a preferred embodiment, an inner panel is fixedly embedded in the inner surface of the main housing, a plug barrel is fixedly embedded in the interior of the inner panel, a plug block is movably embedded in the interior of the plug barrel, and the top of the plug block is fixedly connected to the bottom of the main rod. The gas flows through the air inlet pipe and continuously enters the interior of the main housing, passes through the plug barrel on the inner panel, and finally flows out through the air outlet pipe.

[0012] As a preferred embodiment, the main housing is connected to an air inlet pipe on one side away from the air outlet pipe, a valve cylinder is fixedly embedded in the inner surface of the air inlet pipe, and a plurality of valve stems are movably embedded inside the valve cylinder. Gas enters through the valve cylinder and pushes the sealing plate and the valve stem.

[0013] As a preferred embodiment, the ends of the multiple valve stems close to the main housing are fixedly connected to a sealing plate, the ends of the valve stems away from the sealing plate are fixedly connected to an anti-drop plate, the outer surface of the valve stem is movably sleeved with a second spring, the end of the second spring away from the anti-drop plate is fixedly connected to one side of the valve cylinder, and the end of the second spring away from the valve cylinder is fixedly connected to one side of the anti-drop plate. The anti-drop plate that moves with the valve stem will compress the internal second spring, causing the second spring to generate elastic potential energy. When gas does not enter, the sealing plate closes the valve cylinder to prevent gas from flowing out in the opposite direction.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are:

[0015] 1. The utility model is equipped with a real-time pressure display structure. The density of the gas is closely related to the pressure, and the calculation or measurement of the density is more accurately corrected and compensated, thereby improving the accuracy of gas density detection. At the same time, real-time pressure monitoring can also ensure that the system operates within a safe range and prevent dangers such as explosions caused by excessive pressure.

[0016] 2. The utility model is provided with a one-way valve structure to ensure that the gas flows in a predetermined direction and does not interfere with the detection results. It can ensure the accuracy and stability of the detection, keep the gas pressure inside the detection device stable, and reduce the influence of pressure fluctuations on the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a density meter with good stability provided by the utility model;

[0018] Figure 2 A schematic diagram of the cross-sectional structure of a density meter with good stability provided by the utility model;

[0019] Figure 3 A schematic diagram of the three-dimensional structure of a density meter with good stability provided by the utility model;

[0020] Figure 4A schematic diagram of the cross-sectional structure of an air intake pipe in a density meter with good stability provided by the utility model;

[0021] Figure 5 The utility model provides a density meter with good stability Figure 2 Schematic diagram of the enlarged structure of A in the middle.

[0022] Legend:

[0023] 1. Main casing; 2. Main rod; 3. Lifting plate; 4. Fixed plate; 5. Sealing shell; 6. Extending plate; 7. Indicator plate; 8. Lining plate; 9. Force plate; 10. Through groove; 11. Force plate; 12. First spring; 13. Exhaust pipe; 14. Valve; 15. Connecting pipe; 16. Inlaid plate; 17. Plug cylinder; 18. Plug block; 19. Inlet pipe; 20. Valve cylinder; 21. Valve stem; 22. Sealing plate; 23. Anti-slip plate; 24. Second spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1 to 5 The utility model provides a technical solution: a density meter with good stability, comprising a main shell 1, the top of the main shell 1 is movably embedded with a main rod 2, the top of the main rod 2 is fixedly connected with a lifting plate 3, both sides of the main shell 1 are fixedly connected with a fixing plate 4, the inner sides of the two fixing plates 4 are fixedly connected with a sealing shell 5, the outer surface of the lifting plate 3 is movably embedded in the inner surface of the sealing shell 5, the outer surface of the main rod 2 is fixedly connected with an extending plate 6, and the end of the extending plate 6 away from the main rod 2 is fixedly connected with an indicating plate 7. The top of the main shell 1 is fixedly connected with two lining plates 8, the tops of the two lining plates 8 are fixedly connected with a force-bearing plate 9, the outer surface of the lifting plate 3 is movably embedded in the inside of the force-bearing plate 9, a through groove 10 is opened on the lining plate 8, the outer surface of the extending plate 6 is arranged in the inside of the through groove 10, the sealing shell 5 is fixed by the fixing plate 4, and the air pressure will push the internal lifting plate 3, so that the main rod 2 drives the plug 18 to move downward.

[0026] like Figures 1 to 5 As shown, a force-applying plate 11 is fixedly sleeved on the outer surface of the main rod 2 , and a first spring 12 is movably sleeved on the outer surface of the main rod 2 . The force-applying plate 11 squeezes the first spring 12 above the force-bearing plate 9 .

[0027] like Figures 1 to 5 As shown, the bottom of the first spring 12 is fixedly connected to the top of the force-bearing plate 9, and the top of the first spring 12 is fixedly connected to the bottom of the force-applying plate 11. The force-applying plate 11 squeezes the first spring 12 above the force-bearing plate 9, thereby achieving stable air outlet of the device.

[0028] like Figures 1 to 5 As shown, one side of the main housing 1 is connected to an air outlet pipe 13 , and a valve 14 is provided on the outer surface of the air outlet pipe 13 . The air outlet pipe 13 is sealed by closing the valve 14 .

[0029] like Figures 1 to 5 As shown, the top of the gas outlet pipe 13 is connected to a connecting pipe 15 , and one end of the connecting pipe 15 away from the gas outlet pipe 13 is connected to the top of the sealed shell 5 . Part of the gas will pass through the connecting pipe 15 and enter the sealed shell 5 .

[0030] like Figures 1 to 5 As shown, an inner panel 16 is fixedly embedded in the inner surface of the main casing 1, a plug tube 17 is fixedly embedded in the inner part of the inner panel 16, a plug block 18 is movably embedded in the inner part of the plug tube 17, and the top of the plug block 18 is fixedly connected to the bottom of the main rod 2. The gas flows through the air inlet pipe 19 and continuously enters the interior of the main casing 1, passes through the plug tube 17 on the inner panel 16, and finally flows out through the air outlet pipe 13.

[0031] like Figures 1 to 5 As shown, the side of the main casing 1 away from the air outlet pipe 13 is connected to the air inlet pipe 19, and a valve cylinder 20 is fixedly embedded in the inner surface of the air inlet pipe 19. A plurality of valve stems 21 are movably embedded inside the valve cylinder 20. Gas enters through the valve cylinder 20 and pushes the sealing plate 22 and the valve stem 21.

[0032] like Figures 1 to 5 As shown, one end of the multiple valve stems 21 close to the main casing 1 is fixedly connected to the sealing plate 22, and the end of the valve stem 21 away from the sealing plate 22 is fixedly connected to the anti-dropping plate 23. The outer surface of the valve stem 21 is movably sleeved with a second spring 24, and the end of the second spring 24 away from the anti-dropping plate 23 is fixedly connected to one side of the valve cylinder 20, and the end of the second spring 24 away from the valve cylinder 20 is fixedly connected to one side of the anti-dropping plate 23. The anti-dropping plate 23 that moves with the valve stem 21 will compress the internal second spring 24, so that the second spring 24 generates elastic potential energy. When the gas does not enter, the sealing plate 22 closes the valve cylinder 20 to prevent the gas from flowing out in the opposite direction.

[0033] Working principle: First, connect the gas to the device through the air inlet pipe 19. The gas enters through the valve cylinder 20 and pushes the sealing plate 22 and the valve stem 21. The anti-slip plate 23 that moves with the valve stem 21 will compress the internal second spring 24, so that the second spring 24 generates elastic potential energy. When the gas does not enter, the sealing plate 22 closes the valve cylinder 20 to prevent the gas from flowing out in the opposite direction. The gas flows through the air inlet pipe 19 and continues to enter the main housing 1. It passes through the plug cylinder 17 on the inner panel 16 and finally flows out through the air outlet pipe 13. When the gas flows through the air outlet pipe 13 under the action of fluid pressure, part of the gas will pass through the connecting pipe 15 and enter the inside of the sealed shell 5. The sealing shell 5 is fixed by the fixing plate 4, and the air pressure will push the internal lifting plate 3, so that the main rod 2 drives the plug 18 to move downward and reduces the gas output of the plug tube 17. The force plate 11 squeezes the first spring 12 above the force plate 9, so as to achieve the stability of the gas output of the device. When the outward plate 6 and the indicator plate 7 on the outer surface of the main rod 2 tend to be stable and no longer move inside the through groove 10 of the lining plate 8, the gas flow rate is stable and the original gas inside the device is discharged cleanly, the outlet pipe 13 is sealed by closing the valve 14, and the air pressure forms a stable state inside the main shell 1. The air pressure after the device is stabilized can be obtained by relying on the height of the indicator plate 7.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A density meter with good stability, comprising a main housing (1), characterized in that: The main housing (1) is movably embedded with a main rod (2) at the top, and a lifting plate (3) is fixedly connected to the top of the main rod (2). Both sides of the main housing (1) are fixedly connected with fixed plates (4). The inner sides of the two fixed plates (4) are fixedly connected with a sealing shell (5). The outer surface of the lifting plate (3) is movably embedded in the inner surface of the sealing shell (5). The outer surface of the main rod (2) is movably embedded in the bottom of the sealing shell (5). The outer surface of the main rod (2) is fixedly connected with an extension plate (6). The end of the extension plate (6) away from the main rod (2) is fixedly connected with an indicator plate (7). The top of the main housing (1) is fixedly connected with two lining plates (8). The tops of the two lining plates (8) are fixedly connected with a force-bearing plate (9). The outer surface of the lifting plate (3) is movably embedded in the inside of the force-bearing plate (9). A through groove (10) is opened on one of the lining plates (8), and the outer surface of the extension plate (6) is arranged inside the through groove (10).

2. A density meter with good stability according to claim 1, characterized in that: A force application plate (11) is fixedly sleeved on the outer surface of the main rod (2), and a first spring (12) is movably sleeved on the outer surface of the main rod (2).

3. A density meter with good stability according to claim 2, characterized in that: The bottom of the first spring (12) is fixedly connected to the top of the force-bearing plate (9), and the top of the first spring (12) is fixedly connected to the bottom of the force-applying plate (11).

4. A density meter with good stability according to claim 1, characterized in that: One side of the main housing (1) is connected to an air outlet pipe (13), and a valve (14) is provided on the outer surface of the air outlet pipe (13).

5. A density meter with good stability according to claim 4, characterized in that: The top of the air outlet pipe (13) is connected to a connecting pipe (15), and one end of the connecting pipe (15) away from the air outlet pipe (13) is connected to the top of the sealing shell (5).

6. A density meter with good stability according to claim 4, characterized in that: An inner panel (16) is fixedly embedded in the inner surface of the main housing (1), a plug tube (17) is fixedly embedded in the interior of the inner panel (16), a plug block (18) is movably embedded in the interior of the plug tube (17), and the top of the plug block (18) is fixedly connected to the bottom of the main rod (2).

7. A density meter with good stability according to claim 6, characterized in that: The side of the main housing (1) away from the air outlet pipe (13) is connected to an air inlet pipe (19), the inner surface of the air inlet pipe (19) is fixedly embedded with a valve cylinder (20), and the interior of the valve cylinder (20) is movably embedded with a plurality of valve stems (21).

8. A density meter with good stability according to claim 7, characterized in that: The ends of the multiple valve stems (21) close to the main housing (1) are fixedly connected to a sealing plate (22), the ends of the valve stems (21) away from the sealing plate (22) are fixedly connected to an anti-slip plate (23), the outer surface of the valve stem (21) is movably sleeved with a second spring (24), the end of the second spring (24) away from the anti-slip plate (23) is fixedly connected to one side of the valve cylinder (20), and the end of the second spring (24) away from the valve cylinder (20) is fixedly connected to one side of the anti-slip plate (23).

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