Device for measuring and detecting pressure gauge

Abstract

The utility model discloses a device for measuring and detecting a pressure gauge, which comprises a casing, the casing is provided with a plurality of step transverse planes distributed in a step shape, each step transverse plane is provided with an air inlet pipe, the upper end of each air inlet pipe is provided with a pressure gauge connector, one pressure gauge connector is provided with a standard pressure gauge, and the other pressure gauge connector is provided with a standard pressure gauge. The rest pressure gauge joints are used for installing to-be-detected pressure gauges; an air pump and a gas storage bottle are installed in the machine shell, the output end of the air pump is connected with the input end of the gas storage bottle, and the gas storage bottle communicates with the gas inlet pipe through a gas supply pipeline. A power push rod is installed in the machine shell, the output end of the power push rod is connected with a push frame, and a plurality of knocking heads are fixed to the push frame. The step-shaped structure of the casing can facilitate the disassembly and assembly of multiple layers of to-be-detected pressure gauges, and the knocking head is driven to move through the power push rod, so that the detection speed is improved when the to-be-detected pressure gauges are lightly knocked in batches; and the power push rod drives the knocking head to flexibly knock the pressure gauge, so that the consistent knocking force at each time can be ensured, and the deviation of the detection result is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure gauge detection technical field, especially a device for pressure gauge measurement detection. BACKGROUND

[0002] After the production of pressure gauge, the pressure gauge needs to be detected to detect whether there is defective product or pressure gauge with large error, and if the pressure gauge with large error is detected, calibration or repair is needed, which is calibration detection; one standard of pressure gauge detection is that after the shell of the pressure gauge is tapped, the pointer value variation of the pressure gauge should not exceed 1 / 2 of the maximum allowable basic error absolute value, that is, the anti-vibration capacity of the pressure gauge needs to be detected through slight vibration.

[0003] In the prior art, when batch detecting the pressure gauge, the shell of the pressure gauge needs to be tapped by manual operation, and the manual operation of tapping is a very time-consuming process, especially when facing batch detection of a large number of pressure gauges, the detection speed cannot meet the production requirement, which seriously slows down the whole detection process and affects the production progress. In addition, it is difficult to ensure that the force of tapping the shell is consistent every time by different detection personnel or the same detection personnel at different times. The difference in force may cause different reactions of the pointer of the pressure gauge, thereby affecting the accurate judgment of the anti-vibration capacity and return error of the pressure gauge, causing deviation of the detection result, and unable to accurately screen out the pressure gauge with real problems or misjudge the qualified product. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a device for pressure gauge measurement detection aiming at the above technical problems.

[0005] In order to achieve the above purpose, the utility model provides a device for pressure gauge measurement detection, which comprises a shell, the shell has a plurality of stepped horizontal surfaces distributed in steps, each stepped horizontal surface is provided with an air inlet pipe, and the upper end of each air inlet pipe is provided with a pressure gauge joint, one of the pressure gauge joints is provided with a standard pressure gauge, and the remaining pressure gauge joints are used for installing pressure gauges to be detected; a gas pump and a gas cylinder are installed in the shell, the output end of the gas pump is connected with the input end of the gas cylinder, the output end of the gas cylinder is provided with a gas supply pipeline, and the gas supply pipeline is communicated with the air inlet pipe; a power push rod is installed in the shell, the output end of the power push rod is connected with a push frame, a plurality of knocking heads are fixed on the push frame, an opening is formed in the shell for the knocking heads to extend out, and the knocking heads can extend out of the opening and knock the pressure gauges to be detected under the drive of the power push rod.

[0006] Preferably, the power push rod is connected with the push frame through a buffer, the buffer comprises a spring and mounting seats located at both ends of the spring, one of the mounting seats is connected with the output end of the power push rod, and the other mounting seat is connected with the push frame.

[0007] Preferably, the gas supply pipeline comprises a main gas supply pipeline and branch gas supply pipelines, the input end of the main gas supply pipeline is connected with the output end of the gas cylinder, the main gas supply pipeline is connected with a plurality of branch gas supply pipelines, the branch gas supply pipelines correspond to the step horizontal surfaces one by one, the branch gas supply pipelines are located directly below the corresponding step horizontal surfaces, and the branch gas supply pipelines are communicated with the gas inlet pipes.

[0008] Preferably, an electric regulating valve is installed at the input end of the main gas supply pipeline.

[0009] Preferably, a stop valve is installed on each gas inlet pipe.

[0010] Preferably, the standard pressure gauge is located at the top of the casing and is communicated with the uppermost branch gas supply pipeline.

[0011] Preferably, at least two gas inlet pipes are installed on each branch gas supply pipeline below the uppermost branch gas supply pipeline.

[0012] The casing has a step type structure, which can facilitate the disassembly and assembly of the multiple layers of pressure gauges to be detected, the power push rod drives the knocking head to move, the batch tapping of the pressure gauges to be detected is realized, manual tapping of the gauge shells is not needed, the tapping time is shortened, and the detection speed is improved; in addition, the power push rod drives the knocking head to tap the pressure gauges flexibly, the force of each tapping is consistent, and the deviation of the detection result is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a perspective view of the device for pressure gauge measurement and detection of the utility model;

[0014] Figure 2 It is a front view of the device for pressure gauge measurement and detection of the utility model;

[0015] Figure 3 It is Figure 2 It is a sectional view along line A-A;

[0016] In the figure, 1 is a casing, 2 is a gas inlet pipe, 3 is a pressure gauge joint, 4 is a standard pressure gauge, 5 is a stop valve, 6 is a gas pump, 7 is a gas cylinder, 8 is a power push rod, 9 is a push frame, 10 is a knocking head, 11 is a step horizontal surface, 12 is an opening, 13 is a buffer, 14 is a main gas supply pipeline, 15 is a branch gas supply pipeline, and 16 is an electric regulating valve. DETAILED DESCRIPTION

[0017] In order to make the above objects, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0018] Please refer to Figures 1 to 3 The embodiment of the present application provides a device for pressure gauge measurement and detection, which comprises a casing 1, the casing 1 has a plurality of stepped horizontal surfaces 11 distributed in a stepped manner, each stepped horizontal surface 11 is provided with an air inlet pipe 2, and the upper end of each air inlet pipe 2 is provided with a pressure gauge joint 3. One of the pressure gauge joints 3 is provided with a standard pressure gauge 4, and the remaining pressure gauge joints 3 are used for mounting pressure gauges to be detected. The standard pressure gauge 4 is a digital pressure gauge, which can facilitate reading. An air pump 6 and an air storage cylinder 7 are installed in the casing 1. The output end of the air pump 6 is connected to the input end of the air storage cylinder 7. The output end of the air storage cylinder 7 is provided with a gas supply pipeline, which is communicated with the air inlet pipe 2. A power push rod 8 is installed in the casing 1. The output end of the power push rod 8 is connected to a push frame 9. A plurality of knocking heads 10 are fixed on the push frame 9. An opening 12 is formed in the casing 1 for the knocking heads 10 to extend out. The knocking heads 10 can extend out of the opening 12 and knock the pressure gauges to be detected under the drive of the power push rod 8. The knocking heads 10 knock the back of the pressure gauges to be detected. The knocking heads 10 have a round rod structure, and the opening 12 has a round hole structure. The knocking heads 10 are slidably connected to the opening 12. The opening 12 supports the knocking heads 10 and guides the knocking heads 10, so that the power push rod 8 drives the knocking heads 10 to move stably and linearly. The power push rod 8 is selected from a gas cylinder, an electric cylinder or a hydraulic cylinder. The stepped structure of the casing 1 can facilitate the disassembly and assembly of the pressure gauges to be detected, reduce the shielding of the pressure gauges to be detected, and facilitate the observation of the pointers of the pressure gauges to be detected. When the power push rod 8 does not push the push frame 9, the knocking heads 10 are inside the opening 12 and cannot extend out of the opening 12 or cannot extend out of the opening 12 too long, which will not affect the installation of the pressure gauges to be detected.

[0019] In order to facilitate the movement of the power push rod 8 and the push frame 9, and to avoid rigidly knocking the pressure gauges to be detected, the power push rod 8 is connected to the push frame 9 through a buffer 13. The buffer 13 comprises a spring and mounting seats at both ends of the spring. One of the mounting seats is connected to the output end of the power push rod 8, and the other mounting seat is connected to the push frame 9.

[0020] To facilitate the supply of gas from the gas cylinder 7 to the inlet pipe 2, a gas supply pipeline is provided, including a main gas supply pipe 14 and branch gas supply pipes 15. The input end of the main gas supply pipe 14 is connected to the output end of the gas cylinder 7. The main gas supply pipe 14 is connected to multiple branch gas supply pipes 15, each corresponding to a different step surface 11. Each branch gas supply pipe 15 is located directly below its corresponding step surface 11 and is connected to the inlet pipe 2. The gas cylinder 7 supplies gas to the main gas supply pipe 14, the main gas supply pipe 14 supplies gas to each branch gas supply pipe 15, and the branch gas supply pipes 15 supply gas to the inlet pipe 2.

[0021] To facilitate control of the gas supply from the gas cylinder 7 to the inlet pipe 2 via the gas supply pipeline and to control the gas pressure, an electric regulating valve 16 is installed at the input end of the main gas supply pipe 14. The electric regulating valve 16 can adjust the intake volume and control the opening and closing of the main gas supply pipe 14. The air pump 6, the standard pressure gauge 4, and the electric regulating valve 16 are all connected to a controller. When gas needs to be supplied to the inlet pipe 2, the controller controls the electric regulating valve 16 to open, maintaining the opening degree of the electric regulating valve 16 at a preset value. When the standard pressure gauge 4 detects that the pressure value has reached the preset value, the controller controls the electric regulating valve 16 to close.

[0022] To facilitate control of airflow through each air inlet pipe 2, a shut-off valve 5 is installed on each air inlet pipe 2. The shut-off valve 5 is a manual shut-off valve. For air inlet pipe 2 with a pressure gauge to be tested, the shut-off valve 5 is opened during testing. For air inlet pipe 2 without a pressure gauge to be tested, the shut-off valve 5 remains closed to prevent gas leakage.

[0023] To facilitate observation of the reading of the standard pressure gauge 4 and the installation of the pressure gauge to be tested, the standard pressure gauge 4 is located at the top of the housing 1 and connected to the uppermost branch air supply pipe 15. The standard pressure gauge 4 is not at the same height as the pressure gauge to be tested, so it will not affect the disassembly and assembly of the pressure gauge to be tested; the standard pressure gauge 4 is located at the top of the housing 1, at the highest point of the entire device, making it easier to observe.

[0024] To facilitate batch testing of pressure gauges and improve testing efficiency, each branch air supply pipe 15 below the topmost branch air supply pipe 15 is equipped with at least two air inlet pipes 2. In this embodiment, each branch air supply pipe 15 below the topmost branch air supply pipe 15 is equipped with three air inlet pipes 2. The branch air supply pipes 15 are arranged in four layers, which can install one standard pressure gauge 4 and nine pressure gauges to be tested. Nine pressure gauges to be tested can be tested at the same time, improving testing efficiency.

[0025] Working principle: Install the pressure gauge to be tested on the pressure gauge connector 3, open the corresponding shut-off valve 5, control the air pump 6 to work, the air pump 6 fills the air storage cylinder 7 with air, control the electric regulating valve 16 to open, so that the air storage cylinder 7 supplies air to the main air supply pipe 14, the main air supply pipe 14 supplies air to each branch air supply pipe 15, and the branch air supply pipe 15 supplies air to the air inlet pipe 2. The pressure gauge to be tested and the standard pressure gauge 4 are in the same air pressure environment. The air pressure in the air supply pipeline is judged by the air pressure detected by the standard pressure gauge 4. When the pressure value detected by the standard pressure gauge 4 reaches the preset value, the electric regulating valve 16 is closed. At this time, the readings of each pressure gauge to be tested can be recorded.

[0026] Subsequently, the power push rod 8 is activated, extending its telescopic end to drive the buffer 13, push frame 9, and striking head 10. The striking head 10 then strikes the back of the pressure gauge to be tested. After the strike, the power push rod 8 retracts, causing the buffer 13, push frame 9, and striking head 10 to reset. The readings of each pressure gauge are then recorded again. This eliminates the need for manual tapping of each gauge case during batch testing, reducing testing time and increasing testing speed. Furthermore, the power push rod 8 drives the striking head 10 to flexibly strike the pressure gauge, ensuring consistent striking force each time and preventing deviations in test results.

[0027] It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A device for pressure gauge measurement and testing, comprising a housing (1), characterized in that, The housing (1) has multiple stepped transverse surfaces (11) arranged in a stepped pattern. Each stepped transverse surface (11) is equipped with an air inlet pipe (2). Each air inlet pipe (2) has a pressure gauge connector (3) installed at its upper end. One of the pressure gauge connectors (3) is equipped with a standard pressure gauge (4), and the other pressure gauge connectors (3) are used to install the pressure gauge to be tested. An air pump (6) and an air storage cylinder (7) are installed inside the housing (1). The output end of the air pump (6) is connected to the input end of the air storage cylinder (7). The gas cylinder (7) is connected to the gas supply pipe at the output end, and the gas supply pipe is connected to the inlet pipe (2). A power push rod (8) is installed inside the housing (1). A push frame (9) is connected to the output end of the power push rod (8). Multiple striking heads (10) are fixed on the push frame (9). An opening (12) is provided on the housing (1) for the striking heads (10) to extend. The striking heads (10) can extend out of the opening (12) and strike the pressure gauge to be tested under the drive of the power push rod (8).

2. The device for pressure gauge measurement and testing according to claim 1, characterized in that, The power push rod (8) is connected to the push frame (9) through a buffer (13). The buffer (13) includes a spring and mounting seats located at both ends of the spring. One mounting seat is connected to the output end of the power push rod (8), and the other mounting seat is connected to the push frame (9).

3. The device for pressure gauge measurement and testing according to claim 1, characterized in that, The gas supply pipeline includes a main gas supply pipe (14) and branch gas supply pipes (15). The input end of the main gas supply pipe (14) is connected to the output end of the gas storage cylinder (7). The main gas supply pipe (14) is connected to multiple branch gas supply pipes (15). Each branch gas supply pipe (15) corresponds to a step surface (11). The branch gas supply pipe (15) is located directly below the step surface (11) it corresponds to. The branch gas supply pipe (15) is connected to the air inlet pipe (2).

4. The device for pressure gauge measurement and testing according to claim 3, characterized in that, An electric regulating valve (16) is installed at the input end of the main gas supply pipe (14).

5. The device for pressure gauge measurement and testing according to claim 4, characterized in that, Each air intake pipe (2) is equipped with a shut-off valve (5).

6. The device for pressure gauge measurement and testing according to claim 1, characterized in that, The standard pressure gauge (4) is located at the top of the housing (1) and is connected to the uppermost branch air supply pipe (15).

7. The apparatus for pressure gauge measurement and testing according to claim 6, characterized in that, Each branch air supply pipe (15) below the topmost branch air supply pipe (15) is equipped with at least two air inlet pipes (2).

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