Corrosion resistant shock resistant diaphragm pressure gauge

Abstract

The utility model discloses an anti -corrosion shock diaphragm pressure gauge, including threaded butt joint pipe, the top fixed intercommunication of threaded butt joint pipe has first docking seat, the top fixed intercommunication of first docking seat has metal bellows, the top fixed intercommunication of metal bellows has second docking seat, the top fixed connection of first docking seat has outer ring. The utility model discloses through metal bellows utilize its flexible structure to absorb and buffer the vibration of the pipeline transmission, and the rubber pad further dissipates energy through the elastic deformation, and the whole construction has mechanical vibration isolation structure, and the vast majority of external vibration is isolated outside pressure detection assembly, ensures the pointer's extreme stability and clear reading, greatly prolongs the life of the movement, improves the reliability, reading stability and service life of diaphragm pressure gauge when measuring.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm pressure gauge technology, and in particular to a corrosion-resistant and shock-resistant diaphragm pressure gauge. Background Technology

[0002] A diaphragm pressure gauge is an instrument that uses an elastic diaphragm to transmit the pressure of the measured medium to a pointer or display device. One side of the diaphragm is in direct contact with the measured medium, while the other side converts the pressure into mechanical displacement through a spring or lever mechanism, thereby indicating the pressure value. It is often used for measuring corrosive or easily leaking media.

[0003] Although traditional diaphragm pressure gauges achieve media isolation through isolation diaphragms, their connection structure is usually a rigid direct connection or a simple threaded connection, lacking an effective vibration buffer design.

[0004] When traditional diaphragm pressure gauges are installed on pumps, compressors, or pipelines with fluid pulsation, severe mechanical vibrations and pressure shocks are transmitted directly to the movement and pointer mechanism inside the gauge case with almost no attenuation through the rigid connection structure. This causes the pointer to shake violently and the readings to become blurred and difficult to read. This not only affects real-time monitoring but also accelerates gear wear and significantly shortens the life of the instrument. Therefore, we propose a corrosion-resistant and shock-resistant diaphragm pressure gauge to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a corrosion-resistant and shock-resistant diaphragm pressure gauge.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A corrosion-resistant and shock-resistant diaphragm pressure gauge includes a threaded connecting pipe, a first mating seat fixedly connected to the top of the threaded connecting pipe, a metal bellows fixedly connected to the top of the first mating seat, a second mating seat fixedly connected to the top of the metal bellows, an outer ring fixedly connected to the top of the first mating seat, an inner ring fixedly connected to the bottom of the second mating seat, a rubber gasket fixedly embedded between the inner ring and the outer ring, an isolation diaphragm fixedly connected to the inner wall of the second mating seat, and a pressure detection component provided on the top of the second mating seat.

[0008] Preferably, the pressure detection assembly includes a pressure gauge housing, a connecting pipe fixedly connected to the top of the second docking seat, a plurality of annular heat sinks fixedly sleeved on the outer wall of the connecting pipe, a connector fixedly connected to the top of the connecting pipe, and the top of the connector fixedly connected to the bottom of the pressure gauge housing.

[0009] Preferably, the outer wall of the threaded connector is threaded with a hexagonal nut, which can enhance the connection stability with the pipeline and prevent media leakage.

[0010] Preferably, the bottom of the inner ring is located inside the outer ring. The cooperation between the inner and outer rings ensures that the rubber pad is always in a stable compression state, which ensures that vibration energy can be fully dissipated through shearing and compression deformation when vibration occurs, thereby enhancing the buffering effect.

[0011] Preferably, the top of the rubber pad is fixedly connected to the bottom of the second mating seat, and the bottom of the rubber pad is fixedly connected to the top of the first mating seat. The sealing properties of the rubber pad can help enhance the overall sealing performance of the device and prevent media leakage.

[0012] Preferably, the outer wall of the pressure gauge housing is fixedly connected to tempered glass, and the inside of the pressure gauge housing is rotatably connected to a pointer.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] This solution utilizes the flexible structure of a metal bellows to absorb and buffer vibrations transmitted from the pipeline, while the rubber pad further dissipates energy through elastic deformation. The overall structure forms a mechanical vibration isolation structure, isolating most external vibrations from the pressure detection components. This ensures extreme stability of the pointer and clear readings, greatly extends the life of the movement, and improves the reliability, reading stability, and service life of the diaphragm pressure gauge during measurement. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a corrosion-resistant and shock-resistant diaphragm pressure gauge proposed in this utility model.

[0017] Figure 2 This is a cross-sectional structural diagram of a corrosion-resistant and shock-resistant diaphragm pressure gauge proposed in this utility model.

[0018] Figure 3 This utility model proposes a corrosion-resistant and shock-resistant diaphragm pressure gauge. Figure 2 A magnified structural diagram of part A in the diagram;

[0019] Figure 4 This is a partial three-dimensional structural diagram of a corrosion-resistant and shock-resistant diaphragm pressure gauge proposed in this utility model.

[0020] In the diagram: 1. Threaded connector; 2. Hexagonal nut; 3. First mating seat; 4. Corrugated metal pipe; 5. Second mating seat; 6. Outer ring; 7. Inner ring; 8. Rubber gasket; 9. Isolation diaphragm; 10. Connecting pipe; 11. Annular heat sink; 12. Connector; 13. Pressure gauge housing; 14. Pointer; 15. Tempered glass. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Depend on Figures 1-4 As shown, a corrosion-resistant and shock-resistant diaphragm pressure gauge is disclosed, including a threaded connecting pipe 1. A hexagonal nut 2 is threaded onto the outer wall of the threaded connecting pipe 1. The threaded connecting pipe 1 achieves a tight connection by being screwed into the pipe joint, providing a stable flow channel for corrosive media. Its threaded structure, combined with the hexagonal nut 2, can enhance the connection stability with the pipeline, prevent media leakage, and at the same time initially transmit external vibrations to the subsequent buffer structure.

[0023] The top of the threaded connector 1 is fixedly connected to the first mating seat 3, and the top of the first mating seat 3 is fixedly connected to the metal bellows 4. The metal bellows 4 is made of stainless steel and can elastically expand and contract along the axial and radial directions. When external vibration occurs, it can efficiently absorb and buffer most of the vibration energy.

[0024] The top of the metal bellows 4 is fixedly connected to the second mating seat 5. The top of the first mating seat 3 is fixedly connected to the outer ring 6. The bottom of the second mating seat 5 is fixedly connected to the inner ring 7. The bottom of the inner ring 7 is located inside the outer ring 6. The threaded mating pipe 1, hexagonal nut 2, first mating seat 3, metal bellows 4, second mating seat 5, outer ring 6 and inner ring 7 are all made of stainless steel.

[0025] The inner ring 7 is inserted into the outer ring 6 and fixedly connected to the rubber pad 8, transmitting the vibration received by the second docking seat 5 to the rubber pad 8; the cooperation between the inner ring 7 and the outer ring 6 ensures that the rubber pad 8 is always in a stable compression state, ensuring that the vibration energy can be fully dissipated through shear and compression deformation when vibration occurs, thus enhancing the buffering effect.

[0026] A rubber pad 8 is fixedly embedded between the inner ring 7 and the outer ring 6. The rubber pad 8 is made of fluororubber. When subjected to compression and shearing caused by vibration, the rubber pad 8 undergoes elastic deformation, which can not only further dissipate the vibration energy that the metal bellows 4 has not absorbed, but also provide damping effect and slow down the vibration transmission speed. At the same time, its sealing characteristics can help enhance the overall sealing of the device and prevent media leakage.

[0027] The top of the rubber pad 8 is fixedly connected to the bottom of the second docking seat 5, and the bottom of the rubber pad 8 is fixedly connected to the top of the first docking seat 3. An isolation diaphragm 9 is fixedly connected to the inner wall of the second docking seat 5. The isolation diaphragm 9 is made of Hastelloy.

[0028] The top of the second docking seat 5 is provided with a pressure detection component, which includes a pressure gauge housing 13 (YTP100). A connecting pipe 10 is fixedly connected to the top of the second docking seat 5. Multiple annular heat sinks 11 are fixedly sleeved on the outer wall of the connecting pipe 10. The multiple annular heat sinks 11 increase the contact area between the connecting pipe 10 and the air, and can efficiently absorb and dissipate the heat transferred by the medium inside the connecting pipe 10.

[0029] A connector 12 is fixedly connected to the top of the connecting pipe 10. The top of the connector 12 is fixedly connected to the bottom of the pressure gauge housing 13. A tempered glass 15 is fixedly connected to the outer wall of the pressure gauge housing 13. A pointer 14 is rotatably connected inside the pressure gauge housing 13. The pointer 14 rotates through the internal mechanism of the pressure gauge housing 13 and the Bourdon tube. The pointer 14 directly displays the measured pressure value by pointing to the scale on the dial. The pressure gauge housing 13 is filled with silicone oil to form a pressure transmission function and at the same time reduce the shaking of the pointer 14.

[0030] Working principle: The threaded connector 1 is screwed into the pipe joint, and the hexagonal nut 2 is rotated downward to increase the stability of the threaded connector 1 and the joint; the flow path of the corrosive test medium is restricted in the lower closed cavity formed by the threaded connector 1, the metal bellows 4 and the isolation diaphragm 9, while the isolation diaphragm 9 completely isolates the corrosive medium from the clean pressure transmission system above.

[0031] When external pipelines or equipment generate severe mechanical vibration, the vibration energy is first transmitted to the first mating seat 3 through the threaded connecting pipe 1 and its hexagonal nut 2. The built-in metal bellows 4 can elastically expand and contract along the axial and radial directions due to its flexible structure, effectively absorbing and buffering most of the medium and high frequency vibration energy.

[0032] Meanwhile, the rubber pad 8 fixed between the first docking seat 3 and the second docking seat 5 undergoes elastic deformation when subjected to compression and shearing, further dissipating vibration energy and providing damping.

[0033] Multiple annular heat sinks 11 on the outer wall of the connecting pipe 10 help reduce thermal stress interference; the pressure signal enters the pressure gauge housing 13 through the connector 12 to drive the pointer 14 to rotate and indicate, while the tempered glass 15 protects the internal mechanism. The entire buffer, through the flexible deformation of the metal bellows 4 and the damping energy dissipation of the rubber pad 8, significantly isolates the influence of external vibration on the pressure detection component, especially the stability of the pointer 14, ensuring clear and accurate readings.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A corrosion-resistant and shock-resistant diaphragm pressure gauge, comprising a threaded connecting pipe (1), characterized in that, The top of the threaded connector (1) is fixedly connected to a first mating seat (3), the top of the first mating seat (3) is fixedly connected to a metal bellows (4), the top of the metal bellows (4) is fixedly connected to a second mating seat (5), the top of the first mating seat (3) is fixedly connected to an outer ring (6), the bottom of the second mating seat (5) is fixedly connected to an inner ring (7), a rubber pad (8) is fixedly embedded between the inner ring (7) and the outer ring (6), an isolation diaphragm (9) is fixedly connected to the inner wall of the second mating seat (5), and a pressure detection component is provided on the top of the second mating seat (5).

2. The corrosion-resistant and shock-resistant diaphragm pressure gauge according to claim 1, characterized in that, The pressure detection assembly includes a pressure gauge housing (13), a connecting pipe (10) is fixedly connected to the top of the second docking seat (5), a plurality of annular heat sinks (11) are fixedly sleeved on the outer wall of the connecting pipe (10), a connector (12) is fixedly connected to the top of the connecting pipe (10), and the top of the connector (12) is fixedly connected to the bottom of the pressure gauge housing (13).

3. The corrosion-resistant and shock-resistant diaphragm pressure gauge according to claim 1, characterized in that, The threaded connector (1) has a hexagonal nut (2) threaded onto its outer wall.

4. The corrosion-resistant and shock-resistant diaphragm pressure gauge according to claim 1, characterized in that, The bottom of the inner ring (7) is located inside the outer ring (6).

5. The corrosion-resistant and shock-resistant diaphragm pressure gauge according to claim 1, characterized in that, The top of the rubber pad (8) is fixedly connected to the bottom of the second docking seat (5), and the bottom of the rubber pad (8) is fixedly connected to the top of the first docking seat (3).

6. The corrosion-resistant and shock-resistant diaphragm pressure gauge according to claim 2, characterized in that, Tempered glass (15) is fixedly connected to the outer wall of the pressure gauge housing (13), and a pointer (14) is rotatably connected inside the pressure gauge housing (13).

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