Pressure gauge detection device

Abstract

The utility model discloses a pressure gauge detection device, which belongs to the technical field of detection equipment and structurally comprises a base, an air pump and a pressurizing bin are fixed on the upper surface of the base, the output end of the air pump is fixedly communicated with the pressurizing bin through an air delivery pipe, a one-way valve is mounted on the air delivery pipe, and a standard device is fixedly mounted at one end of the pressurizing bin. And the top of the base is rotationally connected with a rotating table, a plurality of communicating pipes are fixed to the bottom face of the rotating table in a penetrating mode, and the top ends of the communicating pipes fixedly communicate with connectors of different models correspondingly. According to the pressure gauge detection device, pressure gauges of different models can be installed and fixed, operation is easy, practicability is high, the air pressure value of the inner side of the pressurization bin can be flexibly changed, and rapid detection of the sensitivity and accuracy of the pressure gauges is achieved.

Description

Technical Field

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

[0002] A general pressure gauge refers to an instrument that uses a bourdon tube as an elastic element sensitive element to measure and indicate the pressure higher than the ambient pressure. In the process of industrial process control and technical measurement, due to the high mechanical strength of the elastic sensitive element of the mechanical pressure gauge and the characteristics of convenient production, the mechanical pressure gauge has been more and more widely used.

[0003] Due to the different pipeline joints and diameters for installing the pressure gauge in the existing pressure gauge detection devices, generally different models of pressure gauges correspond to different models of detection devices, resulting in poor versatility. And during the detection process, after ensuring the stable installation and reliable sealing of the pressure gauge, it is necessary to repeatedly operate the oil cup valve, and the operation steps are relatively complex, which is not convenient for adjusting the pressure value received by the pressure gauge. Content of the Utility Model

[0004] In order to solve the above deficiencies in the prior art, the purpose of the utility model is to provide a pressure gauge detection device, which can install and fix different models of pressure gauges, has simple operation, strong practicability, can flexibly change the air pressure value inside the pressurization chamber, and realizes the rapid detection of the sensitivity and accuracy of the pressure gauge.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A pressure gauge detection device is provided, including a base, on the upper surface of which an air pump and a pressurization chamber are fixed. The output end of the air pump is fixedly connected with the pressurization chamber through an air delivery pipe, and a one-way valve is installed on the air delivery pipe. One end of the pressurization chamber is fixedly installed with a standard device, and a pressure regulating cylinder and a vertical pipe are fixedly communicated with the peripheral side surface of the pressurization chamber;

[0007] A rotating table is rotatably connected to the top of the base. A plurality of communicating pipes are fixedly penetrated through the bottom surface of the rotating table. The top ends of the plurality of communicating pipes are respectively fixedly communicated with different models of connectors, and the bottom ends of the communicating pipes are fixedly sleeved with limiting plates. A sleeve is slidably sleeved on the peripheral side surface of the communicating pipe, and the bottom end of the sleeve is fixedly connected with the top end of the vertical pipe;

[0008] A piston column I is slidably matched inside the pressure regulating cylinder. One end surface of the piston column I is fixed with a group of sliding rods I. One end of the sliding rod I slides through the pressure regulating cylinder and is fixed with an end plate. One end of the end plate is rotatably connected with a threaded lead screw a. A vertical plate is fixed on the upper surface of the base, and one end of the threaded lead screw a penetrates through the vertical plate and is threadedly connected with the vertical plate.

[0009] Further, a piston column II is slidably fitted inside the piston column I. One end of the piston column II is fixed with a slide bar II. One end of the slide bar II slidably penetrates through the pressure regulating cylinder and is fixed with a movable plate. The slide bar I slidably penetrates through the movable plate. One end of the movable plate is fixed with a threaded lead screw b. One end of the end plate is rotatably connected with a threaded cylinder. One end of the threaded lead screw b is located inside the threaded cylinder and is in threaded fit with the threaded cylinder.

[0010] Further, one end of the threaded lead screw a is fixed with a hand wheel. The peripheral surface of one end of the threaded cylinder is fixedly sleeved with a knob. The peripheral surface of the piston column I is sleeved with a sealing ring. The peripheral surface of the piston column II is also sleeved and fixed with a sealing ring.

[0011] Further, one end of the supercharging chamber is fixedly communicated with a pressure relief pipe, and an electromagnetic valve is fixedly installed on the pressure relief pipe.

[0012] Further, a support plate is fixed on the upper surface of the base, and a rotating table is rotatably connected to the top surface of the support plate.

[0013] Further, a first flange is fixed at the bottom end of the sleeve, and a second flange is fixed at the top end of the vertical pipe. The first flange and the second flange are butt-jointed and fixed.

[0014] Further, a rubber pad is fixed on the upper surface of the limiting plate, and a rubber pad is also fixed on the upper surface of the second flange. A plurality of bolt columns are fixed on the lower surface of the first flange. The bottom ends of the bolt columns slidably penetrate through the second flange and are fitted with nuts.

[0015] Further, a plurality of the communicating pipes are arranged in a circular array on the rotating table. The pressure gauge is fixed at the top end of the communicating pipe through a connector. Support columns are fixed at the four corners of the lower surface of the base.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. For the pressure gauge detection device exemplified by the present utility model, pressure gauges of different specifications can be fixed at the top end of the communicating pipe through connectors of different models. The sliding fit between the sleeve and the communicating pipe facilitates the disassembly and fixation between the first flange and the second flange. The setting of the rubber pad can make the first flange and the second flange be tightly fixed, and the inner top surface of the sleeve and the limiting plate be tightly fixed, realizing the rapid installation and fixation of pressure gauges of different models, with simple operation and strong practicability.

[0018] 2. For the pressure gauge detection device exemplified by the present utility model, by rotating the threaded lead screw a to drive the end plate to move horizontally, and through the sliding of the piston column I inside the pressure regulating cylinder, the air pressure value inside the supercharging chamber can be increased or reduced, realizing the manual change of the air pressure inside the supercharging chamber. By comparing with the pressure value displayed by the standard device, the accuracy of the pressure gauge under different pressures can be detected.

[0019] 3. The pressure gauge detection device of the present utility model example drives the horizontal movement of the threaded lead screw b by rotating the threaded barrel, so that the piston column 2 slides horizontally inside the piston column 1, realizing the fine adjustment of the air pressure inside the pressure regulating cylinder, changing the air pressure value inside the supercharging chamber within a small range, and further detecting the sensitivity and accuracy of the pressure gauge. Description of the Drawings

[0020] Other features, objects, and advantages of the present application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0021] Figure 1 is the structural schematic diagram of the present utility model;

[0022] Figure 2 is the structural schematic diagram when the vertical pipe and the connecting pipe of the present utility model are disassembled;

[0023] Figure 3 is the structural schematic diagram when the pressure regulating cylinder and the threaded lead screw a of the present utility model are matched;

[0024] Figure 4 is the cross-sectional view of the piston column 1 of the present utility model.

[0025] In the figure, 1. Base, 2. Supercharging chamber, 3. Standard device, 4. Pressure relief pipe, 5. Electromagnetic valve, 6. Air delivery pipe, 7. Air pump, 8. Check valve, 9. Pressure regulating cylinder, 10. Vertical pipe, 11. Vertical plate, 12. Threaded lead screw a, 13. Handwheel, 14. Support plate, 15. Rotating table, 16. Connecting pipe, 17. Sleeve, 18. Connector, 19. Limiting plate, 20. First flange, 21. Bolt column, 22. Second flange, 23. Rubber pad, 24. Piston column 1, 25. Piston column 2, 26. Slide bar 1, 27. Slide bar 2, 28. End plate, 29. Threaded barrel, 30. Knob, 31. Movable plate, 32. Threaded lead screw b, 33. Sealing ring. Detailed Embodiment

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0027] The components of the embodiments of the present utility model usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model.

[0028] Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Additionally, it should be noted that for the convenience of description, only the parts related to the utility model are shown in the drawings.

[0032] Embodiment: Refer to Figures 1-4 A pressure gauge detection device as shown, including a base 1, an air pump 7 and a pressurization chamber 2 are fixed on the upper surface of the base 1. The output end of the air pump 7 is fixedly communicated with the pressurization chamber 2 through an air pipe 6, and a one-way valve 8 is installed on the air pipe 6. A standard device 3 is fixedly installed at one end of the pressurization chamber 2, and a pressure regulating cylinder 9 and a vertical pipe 10 are fixedly communicated with the circumferential side surface of the pressurization chamber 2;

[0033] A rotating table 15 is rotatably connected to the top of the base 1. A plurality of connecting pipes 16 are fixedly penetrated through the bottom surface of the rotating table 15. The top ends of the plurality of connecting pipes 16 are respectively fixedly communicated with connecting heads 18 of different models, and the bottom ends of the connecting pipes 16 are fixedly sleeved with limiting plates 19. A sleeve 17 is slidably sleeved on the circumferential side surface of the connecting pipe 16, and the bottom end of the sleeve 17 is fixedly connected to the top end of the vertical pipe 10;

[0034] A piston rod one 24 is slidably fitted inside a pressure regulating cylinder 9. One end face of the piston rod one 24 is fixed with a group of slide bars one 26. One end of the slide bar one 26 slidably penetrates through the pressure regulating cylinder 9 and is fixed with an end plate 28. One end of the end plate 28 is rotatably connected with a threaded lead screw a 12. The upper surface of the base 1 is fixed with a vertical plate 11. One end of the threaded lead screw a 12 penetrates through the vertical plate 11 and is threadedly connected with the vertical plate 11;

[0035] A number of connecting pipes 16 are arranged in an annular array on the rotating table 15. The pressure gauge is fixed to the top end of the connecting pipe 16 through a connector 18. Support columns are fixed at the four corners of the lower surface of the base 1 to support the base 1.

[0036] When using the device to detect the pressure gauge, a connector 18 matching the model of the pressure gauge can be selected to fix the pressure gauge to the top end of the connecting pipe 16. Rotate the rotating table 15 so that the connecting pipe 16 is directly above the vertical pipe 10. Slide the sleeve 17 downward so that the sleeve 17 is fixedly connected with the vertical pipe 10, enabling the pressure to pass through the connector 18 and enter the pressure gauge. At this time, the sensitive element of the pressure gauge can sense the pressure;

[0037] Subsequently, start the air pump 7 to increase the air pressure value inside the pressurizing chamber 2. The setting of the one-way valve 8 enables the gas to only enter the inside of the pressurizing chamber 2, preventing the gas inside the pressurizing chamber 2 from escaping through the air delivery pipe 6. Observe the pressure value displayed by the standardizer 3 to make the air pressure inside the pressurizing chamber 2 reach the preset air pressure value. The standardizer 3 is an intelligent digital pressure gauge. By comparing the value on the pressure gauge with that of the standardizer 3, it can be determined whether the pressure gauge is accurate; during this period, the threaded lead screw a 12 can be rotated. Through the threaded connection between the threaded lead screw a 12 and the vertical plate 11, the threaded lead screw a 12 drives the end plate 28 to horizontally move. During this period, the slide bar one 26 is slidably fitted with the pressure regulating cylinder 9. The slide bar one 26 horizontally moves synchronously with the end plate 28, and the slide bar one 26 drives the piston rod one 24 to slide inside the pressure regulating cylinder 9. When the piston rod one 24 moves towards the pressurizing chamber 2, the air inside the pressurizing chamber 2 will be compressed, increasing the air pressure inside the pressurizing chamber 2. When the piston rod one 24 moves away from the pressurizing chamber 2, the air inside the pressurizing chamber 2 is released, reducing the air pressure inside the pressurizing chamber 2, thereby changing the pressure value received by the pressure gauge. By comparing the change in the pressure value of the standardizer 3, the purpose of detecting the accuracy of the pressure gauge is achieved.

[0038] In order to further detect the sensitivity and accuracy of the pressure gauge, in this embodiment, a piston column two 25 is slidably fitted inside a piston column one 24. One end of the piston column two 25 is fixed with a slide bar two 27. One end of the slide bar two 27 slidably penetrates through the pressure regulating cylinder 9 and is fixed with a movable plate 31. A slide bar one 26 slidably penetrates through the movable plate 31. One end of the movable plate 31 is fixed with a threaded lead screw b 32. One end of an end plate 28 is rotatably connected with a threaded cylinder 29. One end of the threaded lead screw b 32 is located inside the threaded cylinder 29 and is in threaded cooperation with the threaded cylinder 29. By rotating the threaded cylinder 29, one end of the threaded lead screw b 32 slides into or out of the threaded cylinder 29, achieving the purpose of driving the movable plate 31 to horizontally move. The horizontal movement of the movable plate 31 drives the slide bar two 27 to move, and further drives the piston column two 25 to horizontally slide inside the piston column one 24, realizing the fine adjustment of the air pressure inside the pressurizing chamber 2. Through small-range air pressure changes, the sensitivity and accuracy of the pressure gauge can be further detected.

[0039] Further, in this embodiment, one end of a threaded lead screw a 12 is fixed with a hand wheel 13. The setting of the hand wheel 13 facilitates the rotation of the threaded lead screw a 12. The circumferential side surface of one end of the threaded cylinder 29 is fixedly sleeved with a knob 30. The setting of the knob 30 facilitates the rotation of the threaded cylinder 29. A sealing ring 33 is sleeved on the circumferential side surface of the piston column one 24. The circumferential side surface of the piston column two 25 is also fixedly sleeved with a sealing ring 33. The setting of the sealing ring 33 can make the circumferential side surface of the piston column one 24 in close contact with the inner side wall of the pressure regulating cylinder 9, and the circumferential side surface of the piston column two 25 in close contact with the inner side wall of the piston column one 24.

[0040] In order to be able to quickly reduce the air pressure value inside the pressurizing chamber 2 and detect the accuracy of the pressure gauge through a large-range sudden drop in the air pressure value, in this embodiment, one end of the pressurizing chamber 2 is fixedly communicated with a pressure relief pipe 4. An electromagnetic valve 5 is fixedly installed on the pressure relief pipe 4. Opening the electromagnetic valve 5 can make the air pressure inside the pressurizing chamber 2 quickly discharged through the pressure relief pipe 4.

[0041] In order to rotatably connect the rotating table 15 to the upper surface of the base 1, in this embodiment, a support plate 14 is fixed on the upper surface of the base 1, and the top surface of the support plate 14 is rotatably connected with the rotating table 15.

[0042] To facilitate the installation and disassembly between the sleeve 17 and the vertical pipe 10, in this embodiment, a first flange 20 is fixed to the bottom end of the sleeve 17, and a second flange 22 is fixed to the top end of the vertical pipe 10. The first flange 20 and the second flange 22 are butt-jointed and fixed. A rubber pad 23 is fixed to the upper surface of the limiting plate 19, and a rubber pad 23 is also fixed to the upper surface of the second flange 22. A plurality of bolt columns 21 are fixed to the lower surface of the first flange 20. The bottom ends of the bolt columns 21 slidably penetrate through the second flange 22 and are fitted with nuts. When the communicating pipe 16 is directly above the vertical pipe 10, the sleeve 17 is slid downward, so that the bolt columns 21 at the bottom of the first flange 20 slidably penetrate through the through slots on the second flange 22, and then through the threaded connection between the nuts and the bolt columns 21, the first flange 20 and the second flange 22 can be brought into contact and fixed together. At this time, the inner top surface of the sleeve 17 is in contact and fixed with the upper surface of the limiting plate 19. The setting of the rubber pad 23 can make the first flange 20 and the second flange 22 be tightly fixed, and the inner top surface of the sleeve 17 and the limiting plate 19 be tightly fixed, which can effectively avoid gas leakage and is convenient for installation and disassembly.

[0043] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principle. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solution formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.

[0044] Except for the technical features described in the specification, the remaining technical features are known to those skilled in the art. To highlight the innovative features of the present utility model, the remaining technical features are not described herein again.

Claims

1. A pressure gauge detection device, characterized in that: It comprises a base (1), an air pump (7) and a pressurizing chamber (2) are fixed on the upper surface of the base (1), the output end of the air pump (7) is fixedly connected to the pressurizing chamber (2) via an air delivery pipe (6), and a one-way valve (8) is installed on the air delivery pipe (6), a standard device (3) is fixedly installed at one end of the pressurizing chamber (2), and a pressure regulating cylinder (9) and a vertical pipe (10) are fixedly connected to the peripheral side of the pressurizing chamber (2); The top of the base (1) is rotatably connected to a rotating platform (15), a plurality of connecting tubes (16) are fixedly passed through the bottom surface of the rotating platform (15), the tops of the plurality of connecting tubes (16) are respectively fixedly connected to connectors (18) of different types, and the bottom ends of the connecting tubes (16) are fixedly sleeved with a limit plate (19), the peripheral side of the connecting tube (16) is slidably sleeved with a sleeve (17), and the bottom end of the sleeve (17) is fixedly connected to the top of the vertical tube (10); A piston column (24) is slidably engaged with the inner side of the pressure regulating cylinder (9), a group of sliding rods (26) are fixed to one end face of the piston column (24), one end of the sliding rod (26) slides through the pressure regulating cylinder (9) and is fixed to an end plate (28), one end of the end plate (28) is rotatably connected to a threaded screw a (12), a vertical plate (11) is fixed to the upper surface of the base (1), one end of the threaded screw a (12) penetrates the vertical plate (11) and is threadedly connected to the vertical plate (11).

2. The pressure gauge detection device according to claim 1, characterized in that: The piston column 1 (24) is slidably engaged with the piston column 2 (25), one end of the piston column 2 (25) is fixed with a slide rod 2 (27), one end of the slide rod 2 (27) slides through the pressure regulating cylinder (9) and is fixed with a movable plate (31), the slide rod 1 (26) slides through the movable plate (31), one end of the movable plate (31) is fixed with a threaded screw b (32), one end of the end plate (28) is rotatably connected with the threaded cylinder (29), one end of the threaded screw b (32) is located in the threaded cylinder (29) and is threadably engaged with the threaded cylinder (29).

3. The pressure gauge detection device according to claim 2, characterized in that: A hand wheel (13) is fixed to one end of the threaded screw rod a (12), a knob (30) is fixedly sleeved on the circumferential side surface of one end of the threaded cylinder (29), a sealing ring (33) is sleeved on the circumferential side surface of the piston column one (24), and a sealing ring (33) is also sleeved and fixedly mounted on the circumferential side surface of the piston column two (25).

4. The pressure gauge detection device according to claim 2, characterized in that: One end of the pressurizing chamber (2) is fixedly connected to a pressure relief pipe (4), and an electromagnetic valve (5) is fixedly mounted on the pressure relief pipe (4).

5. The pressure gauge detection device according to claim 2, characterized in that: A support plate (14) is fixed to the upper surface of the base (1), and a rotating platform (15) is rotatably connected to the top surface of the support plate (14).

6. The pressure gauge detection device according to claim 2, characterized in that: A first flange (20) is fixed to the bottom end of the sleeve (17), a second flange (22) is fixed to the top end of the vertical pipe (10), and the first flange (20) and the second flange (22) are butt-jointed and fixed.

7. The pressure gauge detection device according to claim 6, characterized in that: A rubber pad (23) is fixed to the upper surface of the limit plate (19), a rubber pad (23) is also fixed to the upper surface of the second flange (22), and a plurality of bolt columns (21) are fixed to the lower surface of the first flange (20), the bottom ends of the bolt columns (21) slide through the second flange (22) and are fitted with nuts.

8. The pressure gauge detection device according to any one of claims 1 to 7, characterized in that: A plurality of the connecting pipes (16) are arranged in a circular array on the rotating table (15); a pressure gauge is fixed to the top of the connecting pipe (16) via a connector (18); and support columns are fixed at the four corners of the lower surface of the base (1).

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