A pressure gauge field detection connector

Abstract

The utility model discloses a pressure gauge on -the -spot detection connector relates to pressure gauge detection technical field, and its technical key points are: including main part, the fixed connection of main part top has the extension tube, and the port of extension tube is rotatably connected with the internal thread pipe through the annular bearing, and the internal thread pipe is used for with the induction end thread connection of pressure gauge, and the rotation drive assembly for driving the internal thread pipe positive and negative rotation is arranged to the main part one side internal thread pipe, and the fixed connection of main part one side has the external thread pipe, and the external thread pipe is used for with the pressurizing end thread connection of pressure gauge detector, and the through cavity is seted up between the external thread pipe and extension tube of main part, and the through channel of pressure relief is penetrated to the through cavity one side of main part, and the inner thread is arranged to the pressure relief channel inner wall, and the plug is threadedly connected to the pressure relief channel, this application can help to carry out on -the -spot detection, improve and connect or the efficiency when relieving the connection of large -scale pressure gauge.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge testing technology, and in particular to a pressure gauge field testing connector. Background Technology

[0002] Large pressure gauges, as a crucial industrial measuring instrument, are primarily used for the precise measurement of pressure values ​​of liquids, gases, and other media in various industrial applications. Their structural design typically encompasses core components such as the gauge head, pointer, dial, pressure connection port, and housing. These components work together to ensure the accuracy and reliability of the measurement process. Large pressure gauges are renowned for their high precision, strong reliability, and high durability, making them indispensable measuring tools in numerous industries, including petroleum, chemical, power, pharmaceutical, and metallurgy. They offer a wide measurement range, extending from 0 to 10 MPa or even higher, and can withstand harsh working environments with large temperature fluctuations and frequent vibrations.

[0003] Beyond the traditional industrial sectors mentioned above, the application of large pressure gauges has expanded to emerging fields such as water treatment, marine engineering, and construction engineering, demonstrating their wide adaptability and importance. During use, regular maintenance and inspection are essential to ensure the continuous accuracy and stable operation of the pressure gauges. This includes a thorough inspection of the pressure connection ports, promptly removing any accumulated debris, rust, or other impurities, and keeping the connections dry to prevent measurement errors caused by contamination or corrosion. However, despite the critical importance of regular maintenance, current testing procedures still suffer from efficiency bottlenecks.

[0004] Currently, the accuracy and stability testing of large pressure gauges largely relies on removing them from their original installation location and conducting independent airtightness tests. This process not only involves installation and disassembly steps but also carries the potential risk of damage to the pressure gauge due to bumps and vibrations during transportation, further extending the testing cycle. Therefore, on-site testing has become a better solution, eliminating the need for transportation, thus reducing uncertainty and transportation time, and improving efficiency.

[0005] An existing field testing connector for pressure gauges, with application number CN202321355046.6, can assist in on-site testing. However, due to the large size of large pressure gauges, connecting or disconnecting them from this connector is still quite laborious. Utility Model Content

[0006] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a pressure gauge field testing connector, which can help to carry out field testing and improve the efficiency of connecting or disconnecting from large pressure gauges.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A pressure gauge field testing connector includes a main body, an extension tube fixedly connected to the top of the main body, an internally threaded tube rotatably connected to the port of the extension tube via an annular bearing, the internally threaded tube being threaded to the sensing end of the pressure gauge, a rotary drive assembly for driving the internally threaded tube to rotate forward and backward on one side of the main body, an externally threaded tube fixedly connected to one side of the main body, the externally threaded tube being threaded to the pressurizing end of the pressure gauge, a flow cavity being formed between the externally threaded tube and the extension tube, a pressure relief channel being formed through one side of the flow cavity, the inner wall of the pressure relief channel being provided with internal threads, and a plug being threadedly connected to the pressure relief channel.

[0009] Preferably, the rotary drive assembly includes a drive motor, the housing of the drive motor is fixedly connected to the main body, the output shaft of the drive motor is fixedly connected to a drive gear, a driven gear ring is fixedly sleeved on the outer wall of the internally threaded tube, the drive gear meshes with the driven gear ring, and the drive motor is configured as a stepper motor capable of forward and reverse rotation.

[0010] Preferably, the main body has a receiving cavity, the inner wall of the receiving cavity is fixedly connected to the housing of the drive motor, and the main body has a plurality of heat dissipation holes that are uniformly connected to the receiving cavity.

[0011] Preferably, the outer cover of the main body's external drive gear is provided with a semi-enclosed protective cover, the opening of which faces the internally threaded tube.

[0012] Preferably, the plug includes a threaded rod, the threaded rod is fixedly connected to a sealing block, and a flat knob is fixedly provided on the side of the sealing block away from the threaded rod.

[0013] Preferably, a first sealing gasket is bonded to the end face of the internally threaded tube, and a second sealing gasket is bonded to the connection between the main body and the externally threaded tube.

[0014] Preferably, a funnel-shaped guide cover is fixedly connected to the end face of the internally threaded tube.

[0015] This utility model has the following beneficial effects:

[0016] I. Improved Connection and Disconnection Efficiency: This utility model features an extension tube fixedly connected to the top of the main body, and utilizes a ring bearing to rotate the internally threaded tube at the extension tube port. Simultaneously, a rotation drive assembly drives the internally threaded tube to rotate forward and backward. This design eliminates the need for laborious manual rotation of the connector or pressure gauge when connecting or disconnecting from a large pressure gauge; the connection can be easily achieved simply by rotating the drive assembly. This significantly improves the efficiency of connection and disconnection, solving the problem of the laborious connection or disconnection of large pressure gauges with connectors in existing technologies.

[0017] II. Heat Dissipation and Protection Combination: A cavity is provided on the main body to house the drive motor, and multiple heat dissipation holes are evenly distributed and connected to the cavity. This ensures the heat dissipation requirements of the drive motor during operation and effectively dissipates the heat generated by the generator, extending the motor's service life. A semi-enclosed protective cover is installed outside the main body to protect the drive gear, with the opening facing the internal threaded tube. This protects the drive gear without affecting the meshing and transmission between the drive and driven gear rings, preventing external debris from entering and affecting the transmission effect. The heat dissipation and protection functions work together to ensure the stable operation of the rotary drive assembly.

[0018] III. Sealing and Guiding Combination: A first sealing gasket is bonded to the end face of the internally threaded tube, and a second sealing gasket is bonded to the connection between the main body and the externally threaded tube. This double-sealing design effectively prevents gas or liquid leakage during testing, ensuring the accuracy and safety of the test. A funnel-shaped guide cover is fixedly connected to the end face of the internally threaded tube. When connected to the pressure gauge sensing end, it guides the connection, making it smoother and improving connection efficiency. The sealing and guiding functions complement each other, enhancing the overall performance of the connector.

[0019] IV. Pressure Relief and Operation Combination: The main body has a flow cavity and a pressure relief channel with internal threads running through one side, connected to a plug via the threads. After testing, pressure relief can be performed by rotating the plug, making the operation convenient and quick. The plug includes a threaded rod, a sealing block, and a flathead knob. The flathead knob design makes rotating the plug easier and more convenient for operators. The combination of pressure relief function and convenient operation design improves the ease of testing. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional schematic diagram of the first embodiment of the present utility model.

[0022] Figure 2 This is a cross-sectional view of the first embodiment of the present invention.

[0023] Figure 3 This is a cross-sectional view of the second embodiment of the present invention.

[0024] In the diagram: 1. Main body; 101. Flow cavity; 102. Heat dissipation hole; 201. Extension tube; 202. Ring bearing; 203. Internally threaded tube; 241. Drive motor; 242. Drive gear; 243. Driven gear ring; 244. Protective cover; 3. Externally threaded tube; 401. Threaded rod; 402. Sealing block; 403. Flat knob; 501. First sealing gasket; 502. Second sealing gasket; 503. Funnel-shaped guide cover. Detailed Implementation

[0025] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] First embodiment

[0027] like Figures 1 to 2 As shown, a pressure gauge field detection connector includes a main body 1. An extension tube 201 is fixedly connected to the top of the main body 1. The port of the extension tube 201 is rotatably connected to an internally threaded tube 203 via an annular bearing 202. The internally threaded tube 203 is used for threaded connection to the sensing end of the pressure gauge. A rotary drive assembly for driving the internally threaded tube 203 to rotate forward and backward is provided on one side of the main body 1. An externally threaded tube 3 is fixedly connected to one side of the main body 1. The externally threaded tube 3 is used for threaded connection to the pressurizing end of the pressure gauge detector. A flow cavity 101 is opened between the externally threaded tube 3 and the extension tube 201 in the main body 1. A pressure relief channel is provided through one side of the flow cavity 101 in the main body 1. The inner wall of the pressure relief channel is provided with internal threads, and a plug is threadedly connected to the pressure relief channel.

[0028] like Figures 1 to 2As shown, an extension tube 201 is fixed to the top of the main body 1, and the end of the extension tube 201 is rotatably connected to an internally threaded tube 203 via an annular bearing 202. During pressure gauge testing, the internally threaded tube 203 is threadedly connected to the sensing end of the pressure gauge. Since the internally threaded tube 203 is connected to the extension tube 201 via the annular bearing 202, it can rotate flexibly, facilitating alignment and tightening with the sensing end of the pressure gauge. An externally threaded tube 3 is fixedly connected to one side of the main body 1, and is threadedly connected to the pressure end of the pressure gauge tester, thus establishing a connection channel between the pressure gauge and the pressure gauge tester, preparing for subsequent testing. A rotary drive assembly is provided on one side of the internally threaded tube 203 of the main body 1. When it is necessary to connect the connector to the pressure gauge, the rotary drive assembly is activated, causing the internally threaded tube 203 to rotate forward. During forward rotation, the internally threaded tube 203 gradually tightens with the sensing end of the pressure gauge through its threaded structure, achieving a stable connection between the connector and the pressure gauge, eliminating the need for laborious manual rotation and improving connection efficiency. After the test is completed, when it is necessary to disconnect the connector from the pressure gauge, the control rotation drive assembly drives the internal thread tube 203 to reverse. During the reversal process, the internal thread tube 203 gradually loosens from the sensing end of the pressure gauge, thereby separating the connector from the pressure gauge and avoiding the laborious manual rotation separation operation.

[0029] After the connector is connected to the pressure gauge and pressure gauge tester, the pressure gauge tester applies pressure to the external threaded pipe 3 through its pressurizing end. The pressure medium passes sequentially through the external threaded pipe 3, the flow chamber 101, the extension pipe 201, and the internal threaded pipe 203, finally reaching the sensing end of the pressure gauge to perform pressure testing, thereby verifying the accuracy and stability of the pressure gauge. After the test is completed, the system needs to be depressurized to ensure safety. At this time, rotate the plug connected to the internal thread of the pressure relief channel to unscrew the plug from the pressure relief channel, allowing the pressure medium in the flow chamber 101 to be discharged through the pressure relief channel, thereby reducing the pressure in the system and completing the pressure relief operation. After the pressure relief is completed, screw the plug back into the pressure relief channel and tighten it to prevent external impurities from entering the flow chamber 101.

[0030] like Figures 1 to 2 As shown, the rotary drive assembly includes a drive motor 241. The housing of the drive motor 241 is fixedly connected to the main body 1. The output shaft of the drive motor 241 is fixedly connected to a drive gear 242. A driven gear ring 243 is fixedly sleeved on the outer wall of the internal threaded tube 203. The drive gear 242 meshes with the driven gear ring 243. The drive motor 241 is configured as a stepper motor that can rotate in both directions.

[0031] The rotary drive assembly uses a reversible stepper motor as its power source. The housing of the drive motor 241 is fixedly connected to the inner wall of the receiving cavity in the main body 1 to ensure the stability of the motor during operation. When the drive motor 241 starts, its output shaft begins to rotate. Since the output shaft is fixedly connected to the drive gear 242, the drive gear 242 rotates synchronously with the output shaft. A driven gear ring 243 is fixedly sleeved on the outer wall of the internally threaded tube 203, and the drive gear 242 meshes with the driven gear ring 243. According to the principle of gear transmission, when the drive gear 242 rotates, it drives the meshed driven gear ring 243 to rotate, thereby causing the internally threaded tube 203 to rotate together with the driven gear ring 243. Because the drive motor 241 is a reversible stepper motor, the forward or reverse rotation of the internally threaded tube 203 can be achieved by controlling the forward or reverse rotation of the motor. When a pressure gauge needs to be connected, the drive motor 241 is controlled to rotate forward, and the internal threaded tube 203 rotates in the forward direction, tightening with the sensing end of the pressure gauge through the threaded structure; when the connection needs to be released after the test is completed, the drive motor 241 is controlled to rotate in reverse, and the internal threaded tube 203 rotates in the reverse direction, loosening from the sensing end of the pressure gauge.

[0032] like Figures 1 to 2 As shown, the main body 1 has a receiving cavity, the inner wall of which is fixedly connected to the housing of the drive motor 241. Multiple heat dissipation holes 102, communicating with the receiving cavity, are evenly distributed on the main body 1. The receiving cavity on the main body 1 provides a dedicated installation space for the drive motor 241. Fixing the housing of the drive motor 241 to the inner wall of the receiving cavity allows the drive motor 241 to be stably installed on the main body 1, reducing vibration and shaking during motor operation and ensuring its normal operation. The drive motor 241 generates heat during operation. If this heat cannot be dissipated in time, the motor temperature will rise, affecting its performance and service life. The multiple heat dissipation holes 102, evenly distributed on the main body 1 and communicating with the receiving cavity, form airflow channels. When the motor is working, heat can be dissipated into the surrounding air through the heat dissipation holes 102, accelerating heat exchange and dissipation, thereby effectively reducing the motor temperature and ensuring stable operation of the motor in a suitable temperature environment.

[0033] like Figures 1 to 2As shown, the main body 1 has a semi-enclosed protective cover 244 covering the drive gear 242, with the opening of the protective cover 244 facing the internal threaded tube 203. In the connector's working environment, dust, iron filings, and other debris may be present. If these debris enters between the drive gear 242 and the driven gear ring 243, it will affect the normal meshing of the gears, leading to poor transmission or even damage to the gears. The semi-enclosed structure of the protective cover 244 effectively prevents external debris from entering the drive gear 242 area, ensuring the normal operation of the gear transmission. The protective cover 244 also provides a certain degree of safety protection, preventing operators from accidentally touching the rotating drive gear 242 during connector operation and avoiding accidents. Simultaneously, the design of the opening facing the internal threaded tube 203 does not affect the meshing transmission between the drive gear 242 and the driven gear ring 243, while maximizing the protective effect.

[0034] like Figures 1 to 2 As shown, the plug includes a threaded rod 401, a sealing block 402 fixedly connected to the threaded rod 401, and a flathead knob 403 fixedly mounted on the side of the sealing block 402 away from the threaded rod 401. The plug consists of the threaded rod 401, the sealing block 402, and the flathead knob 403. When it is necessary to seal the pressure gauge field testing connector to prevent leakage of pressure medium during testing, the plug is threadedly connected to the internal thread of the pressure relief channel on the connector body 1 via the threaded rod 401. As the threaded rod 401 is gradually screwed into the pressure relief channel, the sealing block 402 will tightly fit against the port of the pressure relief channel, thereby blocking the flow path of the pressure medium, achieving a sealing effect, and ensuring the accuracy and safety of the test. A flathead knob 403 is fixedly mounted on the side of the sealing block 402 away from the threaded rod 401. The operator can use a flathead screwdriver or other tools to insert the flathead knob 403 and rotate the screwdriver to rotate the plug, thereby tightening or loosening the plug. This design makes operation more convenient and labor-saving, especially when frequent depressurization and sealing operations are required, which can greatly improve work efficiency.

[0035] like Figures 1 to 2As shown, a first sealing gasket 501 is bonded to the end face of the internally threaded tube 203. When the internally threaded tube 203 is threadedly connected to the sensing end of the pressure gauge, the first sealing gasket 501 is squeezed between the end face of the internally threaded tube 203 and the sensing end of the pressure gauge. Due to the gasket's elasticity and flexibility, it can fill the tiny gaps between the connecting surfaces, forming a reliable sealing barrier to prevent pressure medium leakage from the connection and ensure the sealing performance between the pressure gauge and the connector. A second sealing gasket 502 is bonded to the connection between the main body 1 and the externally threaded tube 3. When the externally threaded tube 3 is threadedly connected to the pressurizing end of the pressure gauge, the second sealing gasket 502 is also squeezed between the connecting surfaces of the main body 1 and the externally threaded tube 3. Its function is similar to that of the first sealing gasket 501, filling the gaps between the connecting surfaces, preventing pressure medium leakage, ensuring the sealing effect between the pressure gauge and the connector, and thus ensuring the normal operation of the entire detection system.

[0036] Second embodiment

[0037] like Figure 3 As shown, a funnel-shaped guide cover 503 is fixedly connected to the end face of the internally threaded tube 203. During the connection operation between the connector and the pressure gauge, the larger end of the funnel-shaped guide cover 503 faces outwards, serving a guiding function. When the operator brings the connector close to the sensing end of the pressure gauge, even with a certain positional deviation, the sensing end of the pressure gauge can smoothly enter the threaded connection area of ​​the internally threaded tube 203 under the guidance of the guide cover. This allows the internally threaded tube 203 and the sensing end of the pressure gauge to be accurately and quickly aligned and threadedly connected, improving connection efficiency and ease of operation. The guide cover also protects the end face and threads of the internally threaded tube 203 to a certain extent, preventing damage to the threads due to collisions or scratches during connection, thus extending the service life of the connector. Simultaneously, it also prevents some external debris from entering the interior of the internally threaded tube 203, ensuring the cleanliness of the connection area and improving the sealing and stability of the connection.

[0038] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A pressure field detection connector, comprising a body (1), characterized in that: The main body (1) is fixedly connected to the top of an extension tube (201). The port of the extension tube (201) is rotatably connected to an internal thread tube (203) through an annular bearing (202). The internal thread tube (203) is used to be threadedly connected to the sensing end of the pressure gauge. The main body (1) is provided with a rotary drive assembly on one side of the internal thread tube (203) for driving the internal thread tube (203) to rotate forward and backward. The main body (1) is fixedly connected to an external thread tube (3). The external thread tube (3) is used to be threadedly connected to the pressurizing end of the pressure gauge detector. The main body (1) has a flow cavity (101) between the external thread tube (3) and the extension tube (201). The main body (1) has a pressure relief channel through one side of the flow cavity (101). The inner wall of the pressure relief channel is provided with an internal thread. The pressure relief channel is threadedly connected to a plug.

2. The pressure performance field detection connector according to claim 1, characterized in that: The rotary drive assembly includes a drive motor (241), the housing of the drive motor (241) is fixedly connected to the main body (1), the output shaft of the drive motor (241) is fixedly connected to a drive gear (242), the outer wall of the internal threaded tube (203) is fixedly sleeved with a driven gear ring (243), the drive gear (242) meshes with the driven gear ring (243), and the drive motor (241) is configured as a stepper motor that can rotate in both directions.

3. The pressure performance field detection connector according to claim 2, characterized in that: The main body (1) has a receiving cavity, the inner wall of the receiving cavity is fixedly connected to the housing of the drive motor (241), and a plurality of heat dissipation holes (102) are evenly provided on the main body (1) and connected to the receiving cavity.

4. A pressure field detection connector according to claim 3, characterized in that: The main body (1) has a semi-enclosed protective cover (244) on the outer drive gear (242), and the opening of the protective cover (244) faces the internal threaded tube (203).

5. A pressure performance field detection connector according to claim 4, characterized in that: The plug includes a threaded rod (401), and a sealing block (402) is fixedly connected to the threaded rod (401). A flat knob (403) is fixedly provided on the side of the sealing block (402) away from the threaded rod (401).

6. A pressure field detection connector according to claim 5, characterized in that: The end face of the internally threaded tube (203) is bonded with a first sealing gasket (501), and the connection between the main body (1) and the externally threaded tube (3) is bonded with a second sealing gasket (502).

7. A pressure performance field detection connector according to claim 1, characterized in that: The end face of the internally threaded tube (203) is fixedly connected to a funnel-shaped guide cover (503).

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