Shock-proof pressure gauge verification test device

Abstract

The utility model discloses a vibration-proof pressure gauge verification test device, which relates to the technical field of pressure gauge verification and comprises a base, a spring assembly is arranged on the base, a vibration table is arranged on the spring assembly, an inspection table is arranged on the vibration table, a pressurization assembly is arranged on the inspection table, and a pressure gauge is arranged on the pressurization assembly. The pressurizing assembly is communicated with the fixing pipe, the fixing pipe is connected with a detected meter and a hose, the hose is connected with a connecting pipe, and the connecting pipe is provided with a standard meter; the flexible pipe is connected between the fixing pipe and the connecting pipe of the standard meter, so that the influence of vibration on the standard meter can be greatly reduced, the reading accuracy of the standard meter is ensured, then the reading of the detected meter is observed, and when the error is within an allowable range, the detected meter meets the requirement.

Description

A test apparatus for calibrating shock-resistant pressure gauges Technical Field

[0001] This utility model relates to the field of pressure gauge testing technology, specifically a shock-resistant pressure gauge calibration test device. Background Technology

[0002] Shock-resistant pressure gauges are instruments filled with damping fluid (usually silicone oil or glycerin) inside their casing. They are able to resist vibrations in the working environment and reduce the effects of pressure pulsation. They are widely used in machinery, petroleum, chemical, metallurgical, mining, power and other industries to measure the pressure of media that are not corrosive to copper and copper alloys.

[0003] Vibration-resistant pressure gauges need to be tested for their resistance to vibration in the working environment. A search revealed that CN212903714U discloses a vibration-resistant pressure gauge calibration test bench. This technical solution fixes the calibration bench on a vibration table, ensuring that the calibration bench will not shift due to vibration during the calibration process, and effectively reduces the impact of vibration on the standard instrument, thereby reducing the measurement error of the test bench.

[0004] However, the applicant discovered that even with the standard instrument rigidly connected to the testing equipment, vibration still affected the standard instrument, causing inaccurate readings. This affected the comparison results with the values ​​of the instrument under test, resulting in inaccurate test results for the instrument's resistance to vibration in the working environment. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a shock-resistant pressure gauge calibration test device, which solves the problems existing in the prior art.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a shock-resistant pressure gauge calibration test device, including a base, a spring assembly on the base, a vibration table on the spring assembly, an inspection table on the vibration table, a pressurizing assembly on the inspection table, the pressurizing assembly being connected to a fixed pipe, the gauge under test and a flexible hose being connected to the fixed pipe, a connecting pipe being connected to the flexible hose, and a standard gauge being installed on the connecting pipe;

[0007] The base is equipped with a fixing component for securing the standard table.

[0008] Preferably, the fixing component includes a mounting plate disposed on the base, the mounting plate being provided with a bidirectional electric guide rail, and both sides of the output end of the bidirectional electric guide rail being provided with clamps with anti-slip layers, and both sides of the standard gauge respectively contacting the anti-slip layers on both sides.

[0009] Preferably, a support plate is attached to the bottom of the connecting pipe, the support plate has a through hole with a diameter larger than the outer diameter of the hose, and a lifting component is provided on the support plate.

[0010] Preferably, the lifting assembly includes a groove formed on the mounting plate, the support plate is slidably connected to the groove, and the top of the support plate is connected to a screw via a bearing, the screw being threaded onto the mounting plate.

[0011] Preferably, the top of the support plate is fitted to the top inner wall of the chute.

[0012] Preferably, the top of the base has a slot 1 along the front-to-back direction, and a rod located below the vibration table is inserted into the slot 1. The top of the base has a slot 2 that matches the rod along the left-to-right direction, and the depth of the slot 2 is less than the depth of the slot 1.

[0013] This invention provides a test device for calibrating shock-resistant pressure gauges. Compared with the prior art, it has the following advantages:

[0014] 1. This shock-resistant pressure gauge calibration test device, by connecting a flexible tube between the fixed tube and the standard gauge's connecting tube, greatly reduces the impact of vibration on the standard gauge, thus ensuring the accuracy of the standard gauge's reading. Then, the reading of the gauge under test is observed. When the error is within the allowable range, the gauge under test meets the requirements. By setting up a fixing component, the standard gauge can be fixed in place, improving the stability of the testing process. By setting up a support plate and lifting component, the standard gauge is easily supported, which not only facilitates fine-tuning of the standard gauge's position and subsequent fixing, but also eliminates the need to hold the standard gauge continuously during subsequent fixing, saving physical strength.

[0015] 2. This vibration-resistant pressure gauge calibration test device, by setting up slot one, insert rod and slot two, allows the insert rod to be inserted into shallow slot two after the test is completed, thereby supporting the vibration table. This avoids the vibration table being supported only by the spring assembly when the device is not being tested, which would cause the spring assembly to be in a state of excessive compression. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 is a schematic diagram of the hose, support plate and through hole of this utility model;

[0018] Figure 3 is a schematic diagram of the lifting assembly of this utility model;

[0019] Figure 4 is a schematic diagram of the insertion rod, slot one, and slot two of this utility model.

[0020] In the diagram: 1. Base; 2. Spring assembly; 3. Vibration table; 4. Inspection table; 5. Pressurization assembly; 6. Fixing tube; 7. Test gauge; 8. Hoses; 9. Connecting tube; 10. Standard gauge; 11. Mounting plate; 12. Two-way electric guide rail; 13. Clamping plate; 14. Support plate; 15. Through hole; 16. Screw; 17. Slide groove; 18. Slot one; 19. Insert rod; 20. Slot two. 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] Referring to Figures 1-4, this utility model provides the following two technical solutions:

[0023] First embodiment: A shock-resistant pressure gauge calibration test device includes a base 1, a spring assembly 2 on the base 1, and a vibration table 3 on the spring assembly 2. When the vibration table 3 vibrates, the spring assembly 2 extends and retracts accordingly. A test table 4 is provided on the vibration table 3, and a pressure-applying assembly 5 is provided on the test table 4. The pressure-applying assembly 5 is connected to a fixed tube 6. The pressure-applying assembly 5 is also provided with a pressure rod, a fine-tuning valve, and a pressure relief valve. This is the prior art used to apply pressure, adjust pressure, and relieve pressure in the fixed tube 6. The gauge under test 7 and a hose 8 are connected to the fixed tube 6. A connecting pipe 9 is connected to the hose 8, and a standard gauge 10 is provided on the connecting pipe 9. The standard gauge 10 is a precision digital pressure gauge. When vibrating, the hose 8 can reduce the impact of vibration on the connecting pipe 9, thereby reducing the impact on the standard gauge 10 and ensuring the accuracy of the reading of the standard gauge 10.

[0024] The base 1 is equipped with a fixing component for fixing the standard gauge 10, ensuring the stability of the standard gauge 10 after it is connected through the hose 8.

[0025] The fixing component includes a mounting plate 11 set on the base 1. A bidirectional electric guide rail 12 is provided on the mounting plate 11. Both sides of the output end of the bidirectional electric guide rail 12 are provided with clamps 13 with anti-slip layers, which can drive the clamps 13 to move in opposite directions. The two sides of the standard table 10 are in contact with the anti-slip layers on both sides respectively.

[0026] The bottom of the connecting pipe 9 is fitted with a support plate 14. The support plate 14 has a through hole 15 with a diameter larger than the outer diameter of the hose 8, which does not affect the extension and retraction of the hose 8. The support plate 14 is equipped with a lifting component.

[0027] The lifting assembly includes a slide groove 17 formed on the mounting plate 11. A support plate 14 is slidably connected to the slide groove 17. A screw 16 is connected to the top of the support plate 14 via a bearing. The screw 16 is threaded onto the mounting plate 11. By rotating the screw 16, the support plate 14 can be raised and lowered in the slide groove 17. When installing the connecting pipe 9 of the standard gauge 10, the support plate 14 can be lowered so that the top of the hose 8 is exposed, thus facilitating connection with the connecting pipe 9. After connection, the support plate 14 is raised to support the connecting pipe 9.

[0028] The top of the support plate 14 fits against the top inner wall of the slide 17, and the height of the standard gauge 10 is just right, so it can be clamped by the two side clamps 13 later.

[0029] The second implementation differs from the first implementation in that: a slot 18 is provided on the top of the base 1 along the front-to-back direction, and a rod 19 located below the vibration table 3 is inserted into the slot 18. In this case, the vibration table 3 will not contact the rod 19 when it vibrates. A slot 20 matching the rod 19 is provided on the top of the base 1 along the left-to-right direction, and the depth of the slot 20 is less than the depth of the slot 18. This allows the rod 19 to be removed from the slot 18 and inserted into the slot 20 when the device is not in use, thus supporting the vibration table 3 and preventing the spring assembly 2 from being under excessive pressure.

[0030] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0031] During use, the pressure component 5 and the vibration table 3 work to make the gauge under test 7 vibrate. The standard gauge 10 can reduce the impact of vibration through the hose 8, thereby ensuring the accuracy of the reading of the standard gauge 10. Since the gauge under test 7 is affected by vibration, its value will change, but it is acceptable if the reading is within the allowable error range compared with the standard gauge 10. If it exceeds the error, it does not meet the requirements.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A test apparatus for calibrating shock-resistant pressure gauges, characterized in that: The system includes a base (1), on which a spring assembly (2) is provided, and on which a vibration table (3) is provided, and on which a test table (4) is provided, and on which a pressure assembly (5) is provided, the pressure assembly (5) is connected to a fixing pipe (6), and on which the test gauge (7) and a hose (8) are connected, and on which a connecting pipe (9) is connected, and on which a standard gauge (10) is provided; and on which the base (1) is a fixing assembly for fixing the standard gauge (10).

2. The shock-resistant pressure gauge calibration test device according to claim 1, characterized in that: The fixing component includes a mounting plate (11) set on the base (1), a bidirectional electric guide rail (12) is provided on the mounting plate (11), and a clamp plate (13) with an anti-slip layer is provided on both sides of the output end of the bidirectional electric guide rail (12), and the two sides of the standard table (10) are in contact with the anti-slip layers on both sides respectively.

3. The shock-resistant pressure gauge calibration test device according to claim 2, characterized in that: The bottom of the connecting pipe (9) is fitted with a support plate (14), and the support plate (14) has a through hole (15) with a diameter larger than the outer diameter of the hose (8). The support plate (14) is equipped with a lifting component.

4. The shock-resistant pressure gauge calibration test device according to claim 3, characterized in that: The lifting assembly includes a groove (17) formed on the mounting plate (11), the support plate (14) is slidably connected to the groove (17), and the top of the support plate (14) is connected to a screw (16) via a bearing, the screw (16) being threaded onto the mounting plate (11).

5. The shock-resistant pressure gauge calibration test device according to claim 4, characterized in that: The top of the support plate (14) is in contact with the top inner wall of the chute (17).

6. The shock-resistant pressure gauge calibration test apparatus according to claim 1, characterized in that: The top of the base (1) has a slot 1 (18) in the front-back direction. A rod (19) located below the vibration table (3) is inserted into the slot 1 (18). The top of the base (1) has a slot 2 (20) in the left-right direction that matches the rod (19). The depth of the slot 2 (20) is less than the depth of the slot 1 (18).

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