Pressure metering calibrating device

Abstract

The utility model relates to the technical field of calibrating devices, and discloses a pressure metering calibrating device, which comprises a box body and a pressure gauge, a metering calibrating platform is fixedly connected in the box body, a fixing mechanism is fixedly connected at the top end of the metering calibrating platform, and a cleaning mechanism is fixedly connected in the box body; the fixing mechanism comprises two fixing blocks, the bottom sides of the two fixing blocks are fixedly connected to the top end of the metrological verification platform, an air cylinder is fixedly connected to the interior of each fixing block, a sliding block is fixedly connected to the driving end of each air cylinder, and a transmission frame is fixedly connected to the top end of each sliding block; and the top of the transmission frame is rotationally connected with a lantern ring. According to the utility model, the pressure gauges of different specifications are fixed and detected, and the fixed ring and the sealing ring at the top end of the detection port are in contact extrusion, so that the sealing performance between the pressure gauges and the detection port is enhanced, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] This utility model relates to the field of calibration device technology, and in particular to a pressure measurement calibration device. Background Technology

[0002] Pressure gauges use elastic elements as sensitive elements and measure pressures higher than ambient pressure. They are widely used in many industrial processes, scientific research fields, and fields such as heat pipelines and oil and gas transmission. Mechanical pressure gauges are widely used in industrial process control and technical measurement due to the characteristics of elastic sensitive elements. However, long-term use will produce errors. According to national regulations, they must be inspected and calibrated regularly to avoid affecting industrial production or even causing danger and loss.

[0003] Pressure gauge calibration devices are used to perform metrological verification of pressure gauges, mainly including pressure calibration benches and pressure calibrators. Their working principle involves comparing the pressure gauge with a standard pressure gauge or pressure source to detect the pressure gauge's error range, ensuring the accuracy and reliability of its measurement results. These devices can calibrate pressure gauges of different types and accuracy levels, and are widely used in industrial production, special equipment testing, and other fields.

[0004] In the existing technology, some pressure measurement and verification devices lack an effective fixing method for pressure gauges of different specifications. If the pressure gauge cannot be placed stably during the verification process, it is easy to shake. In addition, the size of the detection connection port on some pressure measurement and verification devices is fixed, making it difficult to adapt to pressure gauges of various sizes. This results in poor applicability of the device, which in turn affects the efficiency and accuracy of the verification. Therefore, a pressure measurement and verification device is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a pressure measurement and calibration device to solve the problems mentioned in the background art.

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

[0007] A pressure measurement and verification device includes a housing and a pressure gauge. A measurement and verification platform is fixedly connected inside the housing. A fixing mechanism is fixedly connected to the top of the measurement and verification platform. A cleaning mechanism is fixedly connected inside the housing.

[0008] The fixing mechanism includes two fixing blocks. The bottom sides of the two fixing blocks are fixedly connected to the top of the metrological verification platform. A cylinder is fixedly connected inside the fixing block. A sliding block is fixedly connected to the driving end of the cylinder. A transmission frame is fixedly connected to the top of the sliding block. A collar is rotatably connected to the top of the transmission frame. A support plate is fixedly connected to the adjacent side of the two fixing blocks. A rotating plate is rotatably connected to the top of the support plate. A connecting block is fixedly connected to the distant side of the two rotating plates. A pressure plate is rotatably connected to the adjacent side of the two rotating plates. A fixing ring is fixedly connected to the bottom outer side of the pressure gauge.

[0009] As a further description of the above technical solution:

[0010] The cleaning mechanism includes a liquid storage box, a cleaning chamber is opened on the right side of the box, the outer wall of the liquid storage box is fixedly connected to the inner wall of the cleaning chamber, a transmission pipe is fixedly connected to the inside of the liquid storage box, a water pump is fixedly connected to the front end of the transmission pipe, a connecting pipe is fixedly connected to the top of the water pump, a plurality of liquid outlet pipes are fixedly connected to the front end of the connecting pipe, and a drying assembly for post-cleaning treatment is fixedly connected to the left side of the box.

[0011] As a further description of the above technical solution:

[0012] The air drying assembly includes two dust filter plates. An air drying chamber is provided on the left side of the interior of the housing. Ventilation ducts are provided on both the front and rear sides of the air drying chamber. The outer wall of the dust filter plate is fixedly connected to the inner wall of the ventilation duct. A fan is fixedly connected to the inner wall of the ventilation duct.

[0013] As a further description of the above technical solution:

[0014] The bottom sides of the two pressure plates are in contact with the outer wall of the fixing ring. The top of the metrological verification platform is provided with a detection port. A sealing ring is fixedly connected to the top of the detection port. The bottom side of the fixing ring is in contact with the top side of the sealing ring.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the sliding block is slidably connected to the inner wall of the fixed block, and the bottom sides of the two support plates are fixedly connected to the top of the metrological verification platform.

[0017] As a further description of the above technical solution:

[0018] The top outer wall of the transmission frame is slidably connected to the inner wall of the connecting block, and a sliding groove is provided inside the connecting block. The outer wall of the collar is slidably connected to the inner wall of the sliding groove.

[0019] As a further description of the above technical solution:

[0020] The liquid storage box has a liquid storage chamber on its rear side and a cavity on its front side. The bottom end of the water pump is fixedly connected to the bottom inner wall of the cavity.

[0021] As a further description of the above technical solution:

[0022] Multiple liquid outlet pipes are externally fixedly connected to the front side of the inside of the liquid storage box, and a miniature nozzle is fixedly connected to the output end of each liquid outlet pipe.

[0023] By adopting the above technical solution, fixed testing of pressure gauges of different specifications can be achieved.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. In this utility model, the metrological verification platform provides a stable placement position for the pressure gauge. The pressure plate presses the fixing ring at the bottom of the pressure gauge, realizing the fixed testing of pressure gauges of different specifications. At the same time, the fixing ring contacts and squeezes the sealing ring at the top of the test port, enhancing the sealing between the pressure gauge and the test port, avoiding errors caused by pressure gauge shaking or leakage during the verification process, thereby improving the accuracy of the verification results.

[0026] 2. In this utility model, the liquid storage box stores the cleaning liquid, and the water pump provides power to make the cleaning liquid pass through the transmission pipe, the connecting pipe, and the outlet pipe, and finally spray it out by the micro nozzle. The pressure gauge surface is cleaned in the relatively closed space of the cleaning chamber. After cleaning, the pressure gauge is dried in the air drying chamber by the air being stirred by the fan and filtered by the dust filter plate, which ensures the cleanliness of the pressure gauge surface and prevents impurities from affecting the calibration results. Attached Figure Description

[0027] Figure 1 This is a perspective view of a pressure measurement and calibration device proposed in this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the housing of a pressure metering and calibration device proposed in this utility model;

[0029] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0031] In the diagram: 1. Box body; 2. Metrological verification platform; 3. Pressure gauge; 4. Fixing block; 5. Cylinder; 6. Sliding block; 7. Transmission frame; 8. Collar; 9. Support plate; 10. Rotating plate; 11. Connecting block; 12. Pressure plate; 13. Fixing ring; 14. Sealing ring; 15. Cleaning chamber; 16. Liquid storage box; 17. Transfer pipe; 18. Water pump; 19. Connecting pipe; 20. Liquid outlet pipe; 21. Drying chamber; 22. Dust filter plate; 23. Fan. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please refer to Figure 1 , Figure 2 and Figure 3 This utility model provides an embodiment of a pressure measurement and verification device, comprising a housing 1 and a pressure gauge 3. A measurement and verification platform 2 is fixedly connected inside the housing 1, and a fixing mechanism is fixedly connected to the top of the measurement and verification platform 2. A cleaning mechanism is fixedly connected inside the housing 1. The housing 1 serves as the outer shell of the entire pressure measurement and verification device, providing physical protection and housing space for the internal measurement and verification platform 2, fixing mechanism, and cleaning mechanism, making the entire device a unified whole. This avoids interference from external factors on the internal structure and verification process, ensuring the stability of the device. The measurement and verification platform 2, located inside the housing 1, is the main platform for the verification operation of the pressure gauge 3, providing a placement position for the pressure gauge 3. The fixing mechanism at its top can fix the pressure gauge 3, ensuring its stable position during the verification process, thereby guaranteeing the accuracy of the verification results.

[0034] The fixing mechanism includes two fixing blocks 4, whose bottom sides are fixedly connected to the top of the metrology verification platform 2. A cylinder 5 is fixedly connected inside each fixing block 4. The fixing blocks 4 provide the mounting position for the cylinder 5 and are themselves fixed to the metrology verification platform 2, serving as support and positioning. A sliding block 6 is fixedly connected to the drive end of the cylinder 5. The outer wall of the sliding block 6 is slidably connected to the inner wall of the fixing block 4. When the cylinder 5 is activated, it generates upward force, driving the sliding block 6 to move upward along the inner wall of the fixing block 4. A transmission frame 7 is fixedly connected to the top of the sliding block 6, moving upward with the movement of the sliding block 6. A collar 8 is rotatably connected to the top of the transmission frame 7. Support plates 9 are fixedly connected to adjacent sides of the two fixing blocks 4. The bottom sides of the two support plates 9 are fixedly connected to the top of the metrology verification platform 2. A rotating plate 10 is rotatably connected to the top of the support plates 9. The movable plate 10 provides a fulcrum for rotation, ensuring that the rotating plate 10 can rotate stably around its top. Connecting blocks 11 are fixedly connected to the far sides of the two rotating plates 10. The top outer wall of the transmission frame 7 is slidably connected to the inner wall of the connecting block 11. A groove is opened inside the connecting block 11. The outer wall of the collar 8 is slidably connected to the inner wall of the groove. When the transmission frame 7 moves, the collar 8 slides in the groove. This sliding and rotational cooperation allows the transmission frame 7 to drive the connecting block 11 to rotate. Pressure plates 12 are rotatably connected to the near sides of the two rotating plates 10. A fixing ring 13 is fixedly connected to the bottom outer side of the pressure gauge 3. The bottom sides of the two pressure plates 12 are in contact with the outer wall of the fixing ring 13. When the rotating plate 10 rotates, the pressure plates 12 will rotate with it and press the fixing ring 13 downward, thereby fixing the pressure gauge 3 of different installation specifications and ensuring that the position of the pressure gauge 3 is fixed during the calibration process. The top of the metrological verification platform 2 is provided with a test port, and a sealing ring 14 is fixedly connected to the top of the test port. The bottom side of the fixing ring 13 is in contact with the top side of the sealing ring 14. The main function of the sealing ring 14 is to enhance the sealing between the pressure gauge 3 and the test port, prevent leakage during the verification process, and thus ensure the accuracy of the verification results.

[0035] Reference Figure 1 , Figure 2 and Figure 4The cleaning mechanism includes a liquid storage box 16. A cleaning chamber 15 is located on the right side of the inner side of the housing 1. The cleaning chamber 15 provides a relatively enclosed environment for cleaning the pressure gauge 3, preventing cleaning fluid from splashing onto other areas and facilitating comprehensive cleaning of the pressure gauge 3 surface to ensure effective cleaning. The outer wall of the liquid storage box 16 is fixedly connected to the inner wall of the cleaning chamber 15. A transmission pipe 17 is fixedly connected inside the liquid storage box 16, with a water pump 18 fixedly connected to its front end. The transmission pipe 17 is located inside the liquid storage box 16, with one end connected to the water pump 18 and the other end connected to the liquid storage chamber. The function of the transmission pipe 17 is to pump the cleaning fluid from the liquid storage chamber under the action of the water pump 18. The cleaning fluid is transferred to the connecting pipe 19, which is the channel for the cleaning fluid to be transferred inside the storage box 16. The storage box 16 has a storage chamber on the rear side inside, which provides storage space for the cleaning fluid and is the source of the cleaning fluid in the entire cleaning mechanism, providing the material basis for the cleaning process. The storage box 16 has a chamber on the front side inside, and the bottom end of the water pump 18 is fixedly connected to the bottom inner wall of the chamber. The top end of the water pump 18 is fixedly connected to the connecting pipe 19, and the front end of the connecting pipe 19 is fixedly connected to multiple outlet pipes 20. When the water pump 18 is turned on, it can generate power to draw out the cleaning fluid in the storage chamber and transfer it to the outlet pipes 20 through the transmission pipe 17 and the connecting pipe 19. It is the power source for the flow of the cleaning fluid. Multiple outlet pipes 20 are externally fixedly connected to the front of the inside of the liquid storage box 16. The connecting pipe 19 distributes the cleaning liquid transmitted from the water pump 18 to each outlet pipe 20, which plays the role of diversion and transmission. The output end of the outlet pipe 20 is fixedly connected to a micro nozzle, which sprays the cleaning liquid in the form of a spray, thereby cleaning the surface of the pressure gauge 3. This allows the cleaning liquid to be evenly covered on the surface of the pressure gauge 3, improving the cleaning effect.

[0036] A drying assembly for post-cleaning treatment is fixedly connected to the left side of the interior of housing 1. The drying assembly includes two dust filter plates 22. The main function of the dust filter plates 22 is to filter dust and other impurities in the air, preventing dust and other impurities from adhering to the surface of pressure gauge 3 during the drying process, ensuring the cleanliness of the pressure gauge 3 surface, and also protecting the fan 23 from the influence of dust and other impurities. A drying chamber 21 is opened on the left side of the interior of housing 1. Ventilation ducts are opened on both the front and rear sides of the drying chamber 21. The outer wall of the dust filter plates 22 is fixedly connected to the inner wall of the ventilation ducts. A fan 23 is fixedly connected to the inner wall of the ventilation ducts. When the fan 23 is turned on, it can agitate the airflow, causing the airflow to circulate in the drying chamber 21, thereby removing the moisture from the surface of pressure gauge 3 and realizing the drying operation of the cleaned pressure gauge 3.

[0037] Working principle: First, the pressure gauge 3 is placed at the test port on the metrological verification platform 2. The fixing ring 13 on the outer side of the bottom of the pressure gauge 3 is placed on the sealing ring 14. Then, the cylinder 5 inside the fixing block 4 is opened to generate power to drive the sliding block 6 to move upward. The upward movement of the sliding block 6, together with the sliding of the collar 8 in the groove of the connecting block 11, drives the connecting block 11 to rotate around the top of the support plate 9. The rotation of the rotating plate 10 drives the pressure plate 12 to rotate and press the fixing ring 13 downward. This achieves the fixed verification of pressure gauges 3 with different installation specifications. At the same time, the contact and squeezing action between the fixing ring 13 and the sealing ring 14 enhances the sealing between the pressure gauge 3 and the test port, increasing the accuracy of the verification results.

[0038] Before calibrating pressure gauge 3, pressure gauge 3 is placed in cleaning chamber 15. By turning on water pump 18, the cleaning liquid in the storage chamber is driven through transmission pipe 17 into connecting pipe 19. The cleaning liquid in connecting pipe 19 is sprayed out through outlet pipe 20 and finally sprayed out by micro nozzle, thus cleaning the surface of pressure gauge 3. After cleaning, pressure gauge 3 is placed in drying chamber 21, and fan 23 is turned on to agitate the airflow to dry the cleaned pressure gauge 3.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure measurement and calibration device, comprising a housing (1) and a pressure gauge (3), characterized in that: The box (1) is fixedly connected to a metrological verification platform (2), the top of the metrological verification platform (2) is fixedly connected to a fixing mechanism, and the box (1) is fixedly connected to a cleaning mechanism. The fixing mechanism includes two fixing blocks (4). The bottom sides of the two fixing blocks (4) are fixedly connected to the top of the metrological verification platform (2). A cylinder (5) is fixedly connected inside the fixing block (4). A sliding block (6) is fixedly connected to the driving end of the cylinder (5). A transmission frame (7) is fixedly connected to the top of the sliding block (6). A collar (8) is rotatably connected to the top of the transmission frame (7). A support plate (9) is fixedly connected to the adjacent side of the two fixing blocks (4). A rotating plate (10) is rotatably connected to the top of the support plate (9). A connecting block (11) is fixedly connected to the distant side of the two rotating plates (10). A pressure plate (12) is rotatably connected to the adjacent side of the two rotating plates (10). A fixing ring (13) is fixedly connected to the bottom outer side of the pressure gauge (3).

2. The pressure measurement and calibration device according to claim 1, characterized in that: The cleaning mechanism includes a liquid storage box (16), and a cleaning chamber (15) is provided on the right side of the inside of the box (1). The outer wall of the liquid storage box (16) is fixedly connected to the inner wall of the cleaning chamber (15). A transmission pipe (17) is fixedly connected inside the liquid storage box (16). A water pump (18) is fixedly connected to the front end of the transmission pipe (17). A connecting pipe (19) is fixedly connected to the top end of the water pump (18). A plurality of liquid outlet pipes (20) are fixedly connected to the front end of the connecting pipe (19). A drying assembly for post-cleaning treatment is fixedly connected to the left side of the inside of the box (1).

3. The pressure measurement and calibration device according to claim 2, characterized in that: The air drying assembly includes two dust filter plates (22). An air drying chamber (21) is provided on the left side of the interior of the housing (1). Ventilation ducts are provided on both the front and rear sides of the air drying chamber (21). The outer wall of the dust filter plate (22) is fixedly connected to the inner wall of the ventilation duct. A fan (23) is fixedly connected to the inner wall of the ventilation duct.

4. The pressure metering and calibration device according to claim 1, characterized in that: The bottom sides of the two pressure plates (12) are in contact with the outer wall of the fixing ring (13). The top of the metrological verification platform (2) is provided with a detection port. A sealing ring (14) is fixedly connected to the top of the detection port. The bottom side of the fixing ring (13) is in contact with the top side of the sealing ring (14).

5. A pressure metering and calibration device according to claim 1, characterized in that: The outer wall of the sliding block (6) is slidably connected to the inner wall of the fixed block (4), and the bottom sides of the two support plates (9) are fixedly connected to the top of the metrological verification platform (2).

6. The pressure measurement and calibration device according to claim 1, characterized in that: The top outer wall of the transmission frame (7) is slidably connected to the inner wall of the connecting block (11), and a groove is provided inside the connecting block (11). The outer wall of the collar (8) is slidably connected to the inner wall of the groove.

7. A pressure metering and calibration device according to claim 2, characterized in that: The liquid storage box (16) has a liquid storage chamber on the rear side inside and a cavity on the front side inside. The bottom end of the water pump (18) is fixedly connected to the bottom inner wall of the cavity.

8. A pressure metering and calibration device according to claim 2, characterized in that: Multiple liquid outlet pipes (20) are externally fixedly connected to the front side of the inside of the liquid storage box (16), and a micro nozzle is fixedly connected to the output end of the liquid outlet pipe (20).

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