Magnet differential pressure gauge

Abstract

The utility model discloses a magnet differential pressure gauge, and belongs to the technical field of pressure detection. A magnet differential pressure gauge comprises a hyperbaric chamber and a hypobaric chamber, the hyperbaric chamber and the hypobaric chamber are detachably connected, a magnet mechanism capable of moving under pressure is arranged in the hyperbaric chamber and the hypobaric chamber, the magnet mechanism comprises a diaphragm, and the diaphragm is clamped between the hypobaric chamber and the hyperbaric chamber; a high-pressure connector used for feeding air into the high-pressure cabin is arranged on the high-pressure cabin, a low-pressure connector used for feeding air into the low-pressure cabin is arranged on the low-pressure cabin, and the high-pressure connector and the low-pressure connector are located on the same side; according to the differential pressure gauge, the high-pressure cabin and the low-pressure cabin are arranged and are separated by the diaphragm, so that the diaphragm can be conveniently disassembled, cleaned or replaced, high-pressure gas in the two areas can be prevented from entering the low-pressure area, and the problem that gas in the high-pressure area of the differential pressure gauge possibly enters the low-pressure area in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure detection, in particular to a magnetic differential pressure gauge. Background Art

[0002] Differential pressure gauges are mainly used in the process flow of chemical, brazing, metallurgy, electric power, nuclear power and other industrial sectors to measure the differential pressure, flow and other parameters of various liquid or gas media.

[0003] In the prior art, the high-pressure part and the low-pressure part of the magnetic differential pressure gauge are generally integrated. For example, the Chinese utility model patent with application number CN201821568742.4 discloses a magnetic differential pressure gauge. In this scheme, the high pressure and the low pressure are integrated, and a sliding sleeve is used to separate the two high-pressure areas and the low-pressure areas. This setting may cause the gas in the two areas to mix, so it needs to be improved. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that gas in a high-pressure zone of a differential pressure gauge may enter a low-pressure zone, and proposes a magnetic differential pressure gauge.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A magnetic differential pressure gauge comprises a high-pressure chamber and a low-pressure chamber, wherein the high-pressure chamber and the low-pressure chamber are detachably connected, and a pressurized and movable magnetic mechanism is arranged inside the high-pressure chamber and the low-pressure chamber, and the magnetic mechanism comprises a diaphragm, and the diaphragm is sandwiched between the low-pressure chamber and the high-pressure chamber;

[0007] The high-pressure cabin is provided with a high-pressure connector for taking air into the high-pressure cabin, and the low-pressure cabin is provided with a low-pressure connector for taking air into the low-pressure cabin. The high-pressure connector and the low-pressure connector are located on the same side.

[0008] Preferably, one end of the low-pressure cabin is detachably connected to the end of the high-pressure cabin by bolts, and the other end of the low-pressure cabin is closed by a low-pressure cabin plug.

[0009] Preferably, the magnet mechanism further comprises an in-cabin magnetic ring, a standard axis is rotatably arranged in the high-pressure cabin, a standard axis magnetic ring is arranged on the standard axis, the in-cabin magnetic ring is located in the high-pressure cabin, and is in a different cavity from the standard axis magnetic ring.

[0010] Preferably, the magnet mechanism further comprises an in-cabin shaft and a spring, a centering washer is fixedly provided at one end of the in-cabin shaft, the in-cabin magnetic ring is fixedly provided at the end of the in-cabin shaft close to the centering washer, and the centering washer is slidably provided in the high-pressure cabin.

[0011] Preferably, a threaded end plug is threadedly connected at a position in the low-pressure cabin away from the high-pressure cabin, one end of the spring is fixedly connected to the threaded end plug, and the other end is pressed against the end surface of the shaft in the cabin away from the centering washer.

[0012] Preferably, the threaded end plug is hollow.

[0013] Preferably, the middle portion of the diaphragm is fixedly arranged on the end portion of the shaft in the cabin away from the centering washer.

[0014] Preferably, the high-pressure connector is arranged on the bottom surface of the high-pressure cabin, and the low-pressure connector is arranged on the bottom surface of the low-pressure cabin. The high-pressure connector is communicated with the interior of the high-pressure cabin, and the low-pressure connector is communicated with the interior of the low-pressure cabin.

[0015] Preferably, a dial is fixedly provided on the front side of the hyperbaric chamber, the front end of the scale axis passes through the hyperbaric chamber and then enters the dial, and a pointer is fixedly provided on the end.

[0016] Compared with the prior art, the utility model provides a magnetic differential pressure gauge having the following beneficial effects.

[0017] 1. The utility model provides a high-pressure chamber and a low-pressure chamber and separates the two chambers with a diaphragm, which can facilitate disassembly, cleaning or replacement of the diaphragm and prevent high-pressure gas in the two areas from entering the low-pressure area, thereby solving the problem in the prior art that gas in the high-pressure area of ​​the differential pressure gauge may enter the low-pressure area.

[0018] 2. The utility model uses a magnet to drive the pointer to rotate, so that the pointer part is not connected with the inside of the high and low pressure cabins, further reducing air leakage.

[0019] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the utility model.

[0021] Figure 2 It is a schematic diagram of the partial cross-sectional structure of the utility model in a front view.

[0022] In the figure:

[0023] 1. High-pressure cabin; 2. Dial; 3. Pointer; 4. Low-pressure cabin; 5. Low-pressure cabin plug; 6. Bolts; 7. Low-pressure joint; 8. Standard shaft; 9. High-pressure joint; 10. Cabin internal magnetic ring; 11. Centering washer; 12. Standard shaft magnetic ring; 13. Threaded end plug; 14. Spring; 15. Diaphragm; 16. Clamp; 17. Cabin internal shaft. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-2 A magnetic differential pressure gauge comprises a high-pressure chamber 1 and a low-pressure chamber 4, wherein the high-pressure chamber 1 and the low-pressure chamber 4 are detachably connected, and a pressurized movable magnetic mechanism is arranged inside the high-pressure chamber 1 and the low-pressure chamber 4, and the magnetic mechanism comprises a diaphragm 15, and the diaphragm 15 is sandwiched between the low-pressure chamber 4 and the high-pressure chamber 1;

[0026] The high-pressure chamber 1 is provided with a high-pressure connector 9 for taking air into the high-pressure chamber 1 , and the low-pressure chamber 4 is provided with a low-pressure connector 7 for taking air into the low-pressure chamber 4 . The high-pressure connector 9 and the low-pressure connector 7 are located on the same side.

[0027] In a specific embodiment of the utility model, the high-pressure chamber 1 is connected to the high-pressure gas through the high-pressure joint 9, and the low-pressure chamber 4 is connected to the low-pressure gas through the low-pressure joint 7, and the diaphragm 15 separates the gas in the two areas. The diaphragm 15 can be made of rubber and has a certain deformation ability. The high-pressure gas can exert pressure on the diaphragm 15 and the magnet mechanism to deform the diaphragm 15 and move the magnet mechanism;

[0028] By arranging the high-pressure connector 9 and the low-pressure connector 7 on the same side, the effect of accessing the gas on the same side can be achieved. If the high-pressure connector 9 and the low-pressure connector 7 are on both sides, the gas pipeline needs to be bent and then connected to the connector.

[0029] One end of the low-pressure cabin 4 is detachably connected to the end of the high-pressure cabin 1 by bolts 6, and the other end of the low-pressure cabin 4 is closed by a low-pressure cabin plug 5; since the high-pressure cabin 1 and the low-pressure cabin 4 are detachably connected by bolts 6, it can be conveniently disassembled for maintenance, cleaning of the inner cabin, or replacement of the diaphragm 15.

[0030] The magnet mechanism includes an in-cabin magnetic ring 10, a standard axis 8 is rotatably arranged in the high-pressure cabin 1, a standard axis magnetic ring 12 is arranged on the standard axis 8, the in-cabin magnetic ring 10 is located in the high-pressure cabin 1, and is in a different cavity from the standard axis magnetic ring 12; when the magnet mechanism moves, the in-cabin magnetic ring 10 in the magnet mechanism can rotate the standard axis magnetic ring 12 through magnetic force, and then rotate the standard axis 8, thereby achieving the purpose of pressure measurement.

[0031] The magnet mechanism also includes an inner cabin shaft 17 and a spring 14. A centering washer 11 is fixedly arranged at one end of the inner cabin shaft 17. The inner cabin magnetic ring 10 is fixedly arranged at the end of the inner cabin shaft 17 near the centering washer 11. The centering washer 11 is slidably arranged in the high-pressure cabin 1. The centering washer 11 and the high-pressure cabin 1 are slidably arranged for centering the inner cabin shaft 17.

[0032] A threaded end plug 13 is threadedly connected at a position in the low-pressure cabin 4 away from the high-pressure cabin 1. One end of the spring 14 is fixedly connected to the threaded end plug 13, and the other end is pressed against the end surface of the cabin shaft 17 away from the centering washer 11. The spring 14 can apply pressure to the cabin shaft 17 so that the cabin shaft 17 is close to the high-pressure cabin 1.

[0033] The threaded end plug 13 is hollow, and this arrangement allows the low-pressure gas to enter from the low-pressure joint 7 and then enter the low-pressure cabin plug 5 and then enter the low-pressure cabin 4 from the threaded end plug 13.

[0034] The middle part of the diaphragm 15 is fixedly arranged on the end of the cabin shaft 17 away from the centering gasket 11, and the diaphragm 15 is fixed by two clamping plates 16. The diaphragm 15 is clamped by the two clamping plates 16, and then the two clamping plates 16 are threadedly connected to the cabin shaft 17 by fastening bolts 18 to tighten the two clamping plates 16 so that the two clamping plates 16 tightly clamp the diaphragm 15.

[0035] The high-pressure connector 9 is arranged on the bottom surface of the high-pressure cabin 1 , and the low-pressure connector 7 is arranged on the bottom surface of the low-pressure cabin 4 . The high-pressure connector 9 is communicated with the interior of the high-pressure cabin 1 , and the low-pressure connector 7 is communicated with the interior of the low-pressure cabin 4 .

[0036] A dial 2 is fixedly arranged on the front of the hyperbaric chamber 1. The front end of the standard shaft 8 passes through the hyperbaric chamber 1 and enters the dial 2, and a pointer 3 is fixedly arranged on the end. When the standard shaft 8 rotates, the pointer 3 can be driven to swing, and then the reading can be seen.

[0037] Working principle: high-pressure gas is connected to the high-pressure chamber 1 through the high-pressure joint 9, and low-pressure gas is connected to the low-pressure chamber 4 through the low-pressure joint 7. Then the high-pressure gas will apply pressure in the high-pressure chamber 1, causing the diaphragm 15 to deform and move closer to the low-pressure chamber 4, and causing the shaft 17 in the chamber to overcome the elastic force of the spring 14 and the pressure of the low pressure and move toward the low-pressure chamber 4. When moving, it will also drive the magnetic ring 10 in the chamber to move, and the magnetic ring 10 in the chamber drives the standard axis magnetic ring 12 to rotate through magnetic force, and then the standard axis 8 drives the pointer 3 to swing, displaying the differential pressure number of high and low pressure.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A magnetic differential pressure gauge, characterized in that: The invention comprises a high-pressure chamber (1) and a low-pressure chamber (4), wherein the high-pressure chamber (1) and the low-pressure chamber (4) are detachably connected, and a pressurized movable magnetic mechanism is provided inside the high-pressure chamber (1) and the low-pressure chamber (4), and the magnetic mechanism comprises a diaphragm (15), and the diaphragm (15) is sandwiched between the low-pressure chamber (4) and the high-pressure chamber (1); The high-pressure chamber (1) is provided with a high-pressure joint (9) for taking air into the high-pressure chamber (1), and the low-pressure chamber (4) is provided with a low-pressure joint (7) for taking air into the low-pressure chamber (4), wherein the high-pressure joint (9) and the low-pressure joint (7) are located on the same side.

2. A magnetic differential pressure gauge according to claim 1, characterized in that: One end of the low-pressure cabin (4) is detachably connected to the end of the high-pressure cabin (1) via bolts (6), and the other end of the low-pressure cabin (4) is closed via a low-pressure cabin plug (5).

3. A magnetic differential pressure gauge according to claim 1, characterized in that: The magnet mechanism further comprises an in-cabin magnetic ring (10), a standard axis (8) is rotatably arranged in the high-pressure chamber (1), a standard axis magnetic ring (12) is arranged on the standard axis (8), and the in-cabin magnetic ring (10) is located in the high-pressure chamber (1) and is in a different cavity from the standard axis magnetic ring (12).

4. A magnetic differential pressure gauge according to claim 3, characterized in that: The magnet mechanism further comprises an in-cabin shaft (17) and a spring (14); a centering washer (11) is fixedly disposed at one end of the in-cabin shaft (17); the in-cabin magnetic ring (10) is fixedly disposed at a position close to the centering washer (11) at the end of the in-cabin shaft (17); and the centering washer (11) is slidably disposed in the high-pressure chamber (1).

5. A magnetic differential pressure gauge according to claim 4, characterized in that: A threaded end plug (13) is threadedly connected at a position in the low-pressure cabin (4) away from the high-pressure cabin (1); one end of the spring (14) is fixedly connected to the threaded end plug (13), and the other end is pressed against an end surface of the cabin shaft (17) away from the centering washer (11).

6. A magnetic differential pressure gauge according to claim 5, characterized in that: The threaded end plug (13) is hollow.

7. A magnetic differential pressure gauge according to claim 4, characterized in that: The middle portion of the diaphragm (15) is fixedly arranged on the end of the shaft (17) in the cabin away from the centering washer (11).

8. The magnetic differential pressure gauge according to claim 1, characterized in that: The high-pressure joint (9) is arranged on the bottom surface of the high-pressure chamber (1), and the low-pressure joint (7) is arranged on the bottom surface of the low-pressure chamber (4); the high-pressure joint (9) is in communication with the interior of the high-pressure chamber (1), and the low-pressure joint (7) is in communication with the interior of the low-pressure chamber (4).

9. A magnetic differential pressure gauge according to claim 3, characterized in that: A dial (2) is fixedly arranged on the front of the hyperbaric chamber (1); the front end of the index axis (8) passes through the hyperbaric chamber (1) and then into the dial (2), and a pointer (3) is fixedly arranged on the end.

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