Shock-resistant pressure gauge shell

Abstract

The utility model relates to an anti-shock pressure gauge shell, and belongs to the technical field of pressure gauge shells. The shock-resistant pressure gauge shell comprises a shell, a front cover, a rear cover, a joint, a shock-resistant pressure relief plug assembly and a ventilation plug assembly, and has the characteristics of simple structure, low assembly precision, long service life, good damping effect and strong resonance resistance. And the device is suitable for places with violent environment vibration, can resist medium pulsation, impact and sudden unloading, and is widely applied to departments such as machinery, petroleum, chemical engineering, metallurgy, mines and electric power.

Description

Technical Field

[0001] The present application relates to the technical field of pressure gauge cases, and in particular to a shock-resistant pressure gauge case. Background Art

[0002] The anti-seismic pressure gauge case is suitable for places with severe vibration and can withstand medium pulsation, impact and sudden unloading. It is widely used in machinery, petroleum, chemical, metallurgy, mining, electric power and other departments to measure the pressure of non-corrosive media for copper and copper alloys. With the development of society, the continuous improvement of the operating technology level of various mining and chemical industries, especially various new working conditions and new processes as well as more difficult mining, has put forward higher-level technical index requirements for anti-seismic pressure gauge cases.

[0003] The pressure gauge case is an important component of pressure measuring instruments that are indispensable in many industrial fields. However, in traditional seismic pressure gauge cases, the fatigue limit is often enhanced only by selecting materials and increasing thickness, but this method can never meet the long-term use requirements under extremely difficult working conditions. In actual use, weld cracks, fatigue deformation of the case, and even explosions and injuries often occur. In addition, due to the strong vibration of the working conditions, the pressure relief plug assembly and vent screws of the seismic pressure gauge often fail to seal, leak oil, and become loose.

[0004] In order to solve the above problems, the field urgently needs a new type of shock-resistant pressure gauge case with strong shock resistance, which can solve the problem of vibration damage and improve the sealing performance of the pressure relief plug assembly and the vent plug assembly. Utility Model Content

[0005] In order to provide a solution to at least one of the above-mentioned technologies, the present application provides a shock-resistant pressure gauge case.

[0006] The present application provides a shock-resistant pressure gauge case adopting the following technical solution:

[0007] A seismic-resistant pressure gauge case comprises a shell, a front cover installed at the front end of the shell, a rear cover installed at the rear end of the shell, a joint connected to the bottom end of the shell, a seismic-resistant pressure relief plug assembly installed at the rear cover, and a vent plug assembly installed at the top end of the shell.

[0008] Furthermore, the contact surface between the joint and the shell is configured as a cylindrical arc surface, a positioning boss is configured on the cylindrical arc surface, the positioning boss is contained in the cylindrical arc surface, and the positioning boss can be adaptively connected with the outer wall of the shell.

[0009] Furthermore, a resonance canceller is sandwiched between the cylindrical arc surface of the joint and the shell.

[0010] Furthermore, the resonance canceller includes multiple layers of copper damping sheets and / or aluminum damping sheets and / or copper-aluminum damping sheets.

[0011] Furthermore, the positioning boss of the joint is connected to the shell by welding.

[0012] Furthermore, the vent plug assembly includes a rubber plug and a hollow plug that can be located in a channel inside the rubber plug.

[0013] Furthermore, the axial cross section of the rubber plug is configured as a trapezoidal cross section, and an outer end surface is provided at the outer end of the rubber plug when it is installed;

[0014] The hollow plug includes a plug body, caps and a bottom ring arranged at both ends of the plug body, a bottom through hole is opened on the bottom ring side, and a side through hole is opened on one side of the plug body, and the bottom through hole and the side through hole are connected.

[0015] Furthermore, the pressure relief plug assembly includes a rubber plug and a locking pad, and the outer side wall of the locking pad is configured as a V-shaped structure.

[0016] The present application includes at least one of the following beneficial technical effects:

[0017] The resonance canceller composed of multiple layers of copper and aluminum damping sheets is sandwiched between the cylindrical surface of the connector and the outer shell of the present application. The resonance amplitude and duration are effectively reduced through the different rigidity coefficients of different materials and the superposition structure of multiple layers of damping sheets. The design of the resonance canceller effectively improves the damping effect of the anti-seismic pressure gauge case, resists resonance, and protects the pressure gauge case from vibration damage.

[0018] The axial cross-section of the rubber plug of the vent plug assembly of the present application is a trapezoidal structure, which can form a self-locking function and will not loosen on its own in harsh working environments. The hollow plug is provided with a bottom through hole and a side through hole to adjust the air pressure balance with the outside world and ensure the pressure balance inside and outside the case. The side edge of the locking gasket of the pressure relief plug assembly of the present application is a V-shaped structure, which ensures the sealing performance of the rubber plug and effectively prevents the explosion of the seismic pressure gauge when there is internal leakage. The self-locking design of the vent plug assembly and the pressure relief plug assembly fully solves the problem of loosening and oil leakage due to vibration, and improves the sealing performance;

[0019] In summary, this patent solution provides a seismic-resistant pressure gauge case with a simple structure, self-locking capability, low assembly precision requirements, long service life, damping effect, and resistance to resonance. It solves the problems that arise from long-term use of traditional seismic-resistant pressure gauge cases under extremely difficult operating conditions, and has broad application prospects and market value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a general assembly diagram of the earthquake-resistant pressure gauge case of the present utility model.

[0021] FIG. 2 is an exploded view of the shock-resistant pressure gauge case of the present invention.

[0022] Figure 3 shows the connector of the present invention.

[0023] Figures 4, 5 and 6 show the rubber plug of the present invention.

[0024] Figure 7 and Figure 8 show the hollow plug of the utility model.

[0025] Figure 9 and Figure 10 are rubber plugs of the present invention.

[0026] Figure 11 and Figure 12 show the locking pad of the present invention.

[0027] Figure 13 and Figure 14 show the damping sheet of the present invention.

[0028] Description of reference numerals:

[0029] 1. Back cover; 2. Shell; 3. Front cover; 4. Joint; 5. Locking pad; 6. Rubber plug; 7. Rubber plug; 8. Hollow plug; 9. Resonance canceller; 10. Cylindrical arc surface; 11. Positioning boss; 12. Vent plug assembly; 13. Pressure relief plug assembly; 14. Trapezoidal cross section; 15. Side through hole; 16. Bottom through hole; 17. V-shaped structure; 18. Damping plate; 19. Outer end surface; 20. Cap; 21. Plug body; 22. Bottom ring. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-14 This application is described in further detail.

[0031] The embodiments of the present application disclose a shock-resistant pressure gauge case. Example

[0032] This embodiment provides a shock-resistant pressure gauge case. The shock-resistant pressure gauge case of this embodiment is specifically designed as follows (refer to the attached Figure 1-3 ): The housing 2 is made of high-strength stainless steel. The front end of the housing 2 is equipped with a front cover 3, the rear end is equipped with a rear cover 1, and the bottom is safely and reliably connected to the external pipe through a precisely machined joint 4. The cylindrical arc surface 10 of the joint 4 is cleverly designed, which is not only beautiful but also practical. A positioning boss 11 is embedded inside the cylindrical arc surface 10. The built-in positioning boss 11 on the surface precisely docks with the outer wall of the housing 2 to ensure that the joint 4 is firmly connected to the housing 2 to prevent displacement. What is particularly important is that in the contact area between the joint 4 and the cylindrical arc surface 10 of the housing 2, a resonance canceller 9 composed of three layers of copper damping sheets 18 and two layers of aluminum damping sheets 18 are innovatively added (see attached Fig.13 , 14), the stiffness difference of these damping sheets 18 and the multi-layer structure work together to absorb and dissipate the energy generated by vibration to a great extent, effectively suppress the resonance phenomenon, and improve the overall anti-seismic performance. Of course, the resonance canceller can also use a combination of multi-layer copper damping sheets or aluminum damping sheets or copper and aluminum damping sheets. Example

[0033] For the vent plug assembly 12, the axial cross section of the rubber plug 7 is configured as a trapezoidal cross section 14, and an outer end surface 19 is provided at the outer end of the rubber plug 7 when installed. The hollow plug 8 includes a plug body 21, a cap 20 and a bottom ring 22 arranged at both ends of the plug body 21, a bottom through hole 16 is opened on the side of the bottom ring 22, and a side through hole 15 is opened on one side of the plug body 21, and the bottom through hole 16 and the side through hole 15 are connected. Figure 4-6 ) adopts an innovative design of rubber plug 7 with trapezoidal cross section 14. Its axial cross section is a trapezoid with narrow upper part and wide lower part. This shape design not only increases the contact area between rubber plug 7 and the housing, but also maintains a good sealing state even in a long-term severe vibration environment through the self-locking effect of the trapezoidal structure. The hollow plug 8 is nested inside the rubber plug 7 (see attached Figure 7 , 8 ), a bottom through hole 16 is opened on the side of the bottom ring 22 of the hollow plug 8 to slowly balance the internal and external pressures. At the same time, a side through hole 15 is set on one side of the plug body 21 to ensure the necessary gas flow path and maintain the pressure balance inside and outside the case. Example

[0034] The design of the pressure relief plug assembly 13 (see Appendix Fig. 9 , 10 ) integrates a rubber plug 6 and a V-shaped structure 17 locking pad 5. The rubber plug 6 is close to the pressure interface to provide a basic sealing effect. The special design of the outer wall of the V-shaped locking pad 5 not only enhances the reliability of the seal, but its V-shaped structure 17 also forms a mechanical self-locking under vibration impact, effectively preventing locking failure caused by vibration, and significantly reducing the safety risks that may be caused by abnormal increase in internal pressure. Example

[0035] This embodiment describes in detail the specific structure of the resonance canceller 9 (see Appendix Figure 1-3 , 13-14), carefully selected copper and aluminum damping sheets 18 are used. Each layer of damping sheets 18 is stacked with precisely calculated thickness and position, and the damping properties of different materials are complementary to form an efficient energy absorption system. These damping sheets 18 are firmly fixed between the positioning boss 11 of the joint 4 and the housing 2 through high-quality welding technology, ensuring stability and lasting anti-seismic effect during long-term use.

[0036] In addition, in some embodiments of the present application, the resonance canceller 9 can be formed by alternating multiple layers of copper damping sheets 18 and aluminum damping sheets 18 to further improve the damping effect and reduce the resonance amplitude and duration. The inclination angle of the trapezoidal cross section 14 of the rubber plug 7 is 15-30° to further optimize the self-locking function and improve the sealing performance. The angle of the V-shaped structure 17 of the locking pad 5 is 90° to better adapt to the sealing requirements under different working conditions.

[0037] In summary, the technical effects of the embodiments are significant. Not only the seismic resistance and sealing performance of the seismic pressure gauge case are improved through structural optimization, but also the resonance problem that is prone to occur in traditional seismic gauge cases under difficult operating conditions is effectively solved through the innovative design of the resonance canceller 9, thereby extending the service life and reducing maintenance costs. It has extremely high practical value and market potential.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A seismic-resistant pressure gauge case, characterized in that: The invention comprises a housing (2), a front cover (3) mounted on the front end of the housing (2), a rear cover (1) mounted on the rear end of the housing (2), a joint (4) connected to the bottom end of the housing (2), an anti-seismic pressure relief plug assembly (13) mounted on the rear cover (1), and a vent plug assembly (12) mounted on the top end of the housing (2).

2. The shock-resistant pressure gauge case according to claim 1, characterized in that: The contact surface between the joint (4) and the housing (2) is configured as a cylindrical arc surface (10), a positioning boss (11) is configured on the cylindrical arc surface (10), the positioning boss (11) is contained within the cylindrical arc surface (10), and the positioning boss (11) can be adaptively connected to the outer wall of the housing (2).

3. The shock-resistant pressure gauge case according to claim 2, characterized in that: A resonance canceller (9) is sandwiched between the cylindrical arc surface (10) of the joint (4) and the housing (2).

4. The shock-resistant pressure gauge case according to claim 3, characterized in that: The resonance canceller (9) comprises a multi-layer copper damping sheet (18) and / or an aluminum damping sheet (18) and / or a copper-aluminum damping sheet (18).

5. The shock-resistant pressure gauge case according to claim 2, characterized in that: The positioning boss (11) of the joint (4) is connected to the housing (2) by welding.

6. The seismic-resistant pressure gauge case according to any one of claims 1 to 5, characterized in that: The vent plug assembly (12) comprises a rubber plug (7) and a hollow plug (8) which can be located in a channel inside the rubber plug (7).

7. The shock-resistant pressure gauge case according to claim 6, characterized in that: The axial cross section of the rubber plug (7) is configured as a trapezoidal cross section (14), and an outer end surface (19) is provided at the outer end of the rubber plug (7) when the rubber plug (7) is installed; The hollow plug (8) comprises a plug body (21), caps (20) and a bottom ring (22) arranged at both ends of the plug body (21); a bottom through hole (16) is opened on the side of the bottom ring (22); a side through hole (15) is opened on one side of the plug body (21); and the bottom through hole (16) and the side through hole (15) are connected.

8. The shock-resistant pressure gauge case according to claim 6, characterized in that: The pressure relief plug assembly (13) comprises a rubber plug (6) and a locking pad (5), wherein the outer side wall of the locking pad (5) is configured as a V-shaped structure.

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