A transmitter detection device

Abstract

This utility model relates to the field of transmitter testing technology, specifically to a transmitter testing device, including a housing, a primary gas chamber, and multiple secondary gas chambers. The primary gas chamber is fixed to the bottom inner surface of the housing. The multiple secondary gas chambers are connected to the primary gas chamber via pipes. A lead screw stepper motor is fixedly connected to the top of each secondary gas chamber. A piston is slidably connected to the inner surface of each secondary gas chamber, and the piston is connected to the lead screw of the lead screw stepper motor. An air inlet pipe is connected to one side of the primary gas chamber, and an installation pipe is connected to the side of the primary gas chamber away from the secondary gas chambers. This utility model stores gas through the gas chamber structure, and with the lead screw stepper motor driving the piston to move, it can accurately adjust the gas pressure in the gas chamber without relying on frequent gas supply from an external gas source. At the same time, the gas path is closed when replacing the transmitter using a solenoid valve, which can prevent gas leakage in the gas chamber. Only a small amount of gas leakage occurs in the installation pipe, further saving gas. Moreover, the replacement process does not require resupply of gas, shortening the testing cycle.

Description

Technical Field

[0001] This utility model relates to the field of transmitter testing technology, specifically a transmitter testing device. Background Technology

[0002] Pressure transmitters are pressure measuring elements widely used in fluid pressure monitoring and control in industries such as petroleum, chemical, and metallurgy. They need to be calibrated and their performance verified regularly by testing devices. Currently, some transmitter testing devices on the market use an external air source to directly supply air to the testing pipeline. Every time the transmitter to be tested is replaced, the gas in the testing pipeline leaks when the transmitter is disassembled. After reinstalling the new transmitter, the external air source must be turned on again to replenish the air to the set pressure. This makes the operation process cumbersome, prolongs the testing cycle, and causes a lot of gas waste due to frequent air supply, thus increasing the testing cost.

[0003] Therefore, a transmitter detection device is proposed to solve the problems mentioned above. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a transmitter testing device. It stores gas in a gas chamber structure, and a lead screw stepper motor drives a piston to move, enabling precise adjustment of the gas pressure within the chamber. This eliminates the need for frequent external gas supply. Furthermore, a solenoid valve shuts off the gas path during transmitter replacement, preventing gas leakage from the chamber and minimizing leakage to a small amount in the installation pipeline, further conserving gas. Replacement does not require resupply, simplifying the operation process and shortening the testing cycle, thus solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a housing, a primary gas chamber, and multiple secondary gas chambers. The primary gas chamber is fixed to the bottom inner surface of the housing. The multiple secondary gas chambers are connected to the primary gas chamber via pipes. A lead screw stepper motor is fixedly connected to the top of each secondary gas chamber. A piston is slidably connected to the inner surface of each secondary gas chamber, and the piston is connected to the lead screw of the lead screw stepper motor. An air inlet pipe is connected to one side of the primary gas chamber, and an installation pipe is connected to the side of the primary gas chamber away from the secondary gas chambers.

[0006] Preferably, the installation pipeline includes three connectors. One connector of the installation pipeline is fixedly connected to the No. 1 gas chamber, and the other two connectors of the installation pipeline extend out of the housing. The other two connectors of the installation pipeline are respectively connected to an installation transmitter and a standard.

[0007] Preferably, a first solenoid valve is installed on the outer side of the air intake pipe, and a second solenoid valve is installed at the end of the installation pipe near the first air chamber.

[0008] Preferably, a control component is installed on the outer side of the housing near the mounting pipeline, and the first solenoid valve, the second solenoid valve, and the lead screw stepper motor are electrically connected to the control component.

[0009] Preferably, the lead screw stepper motor is fixedly connected to the housing via a mounting plate, and a placement platform is provided on the bottom outer side of the housing. Multiple transmitters are inserted into holes on the upper surface of the placement platform.

[0010] Preferably, the end of the lead screw stepper motor away from the piston passes through the housing, and the end of the lead screw stepper motor extending out of the housing is connected to an indicator plate.

[0011] Compared with the prior art, the present invention provides a transmitter detection device, which has the following advantages:

[0012] 1. By storing gas through a gas chamber structure and using a lead screw stepper motor to drive the piston movement, the gas pressure inside the gas chamber can be precisely adjusted without relying on an external gas source for frequent gas supply. At the same time, the gas line can be shut off by a solenoid valve when replacing the transmitter, which can prevent gas leakage inside the gas chamber. Only a small amount of gas leakage occurs in the installation pipeline, further saving gas. Moreover, the replacement process does not require resupply of gas, simplifying the operation process and shortening the testing cycle. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0014] Figure 1 A front view of the internal structure of the transmitter detection device of this utility model;

[0015] Figure 2 A schematic diagram of the isometric structure of the transmitter testing device of this utility model;

[0016] Figure 3 A schematic diagram of the internal structure of the transmitter detection device of this utility model from the rear;

[0017] Figure 4 A side view of the internal structure of the transmitter detection device of this utility model;

[0018] Figure 5 A schematic diagram of the exploded structure of the No. 2 gas chamber provided for the transmitter detection device of this utility model.

[0019] In the diagram: 1. Housing; 2. Air chamber 1; 3. Air chamber 2; 4. Lead screw stepper motor; 5. Piston; 6. Inlet pipe; 7. Installation pipeline; 8. Transmitter; 9. Standard; 10. Solenoid valve 1; 11. Solenoid valve 2; 12. Control components; 13. Mounting plate; 14. Placement platform; 15. Indicator panel. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example:

[0022] Please see Figure 1 - Figure 5 This embodiment of a transmitter detection device includes a housing 1, a primary gas chamber 2, and multiple secondary gas chambers 3. The primary gas chamber 2 is fixed to the bottom inner surface of the housing 1. The multiple secondary gas chambers 3 are connected to the primary gas chamber 2 via pipes, allowing gas to flow between the primary gas chamber 2 and the secondary gas chambers 3. A lead screw stepper motor 4 is fixedly connected to the top of the secondary gas chamber 3. A piston 5 is slidably connected to the inner surface of the secondary gas chamber 3. The piston 5 is connected to the lead screw of the lead screw stepper motor 4. When the lead screw stepper motor 4 is working, the lead screw of the lead screw stepper motor 4 can drive the piston 5 to slide within the secondary gas chamber 3, thereby changing the gas volume within the secondary gas chamber 3. An air inlet pipe 6 is connected to one side of the primary gas chamber 2, and an installation pipe 7 is connected to the side of the primary gas chamber 2 away from the secondary gas chamber 3. The air inlet pipe 6 is used to introduce an external gas source, and the installation pipe 7 is used to connect a detection element.

[0023] The installation pipeline 7 includes three connectors. One connector of the installation pipeline 7 is fixedly connected to the No. 1 gas chamber 2. The other two connectors of the installation pipeline 7 extend out of the housing 1. The other two connectors of the installation pipeline 7 are respectively connected to the transmitter 8 to be tested and the standard 9. The transmitter 8 is a pressure transmitter and is the device to be tested. The transmitter 8 is connected to the pipeline through a pipe connector. If it cannot be directly connected, it can be connected to the pipeline through a pipe adapter. The pressure transmitter shown in the figure can be a general-purpose 2088 pressure transmitter. The three connectors respectively connect to the No. 1 gas chamber 2, the transmitter 8 to be tested, and the standard 9 to form a test gas path. A No. 1 solenoid valve 10 is installed on the outer side of the air inlet pipe 6 to control the on / off of the external air source supplying air to the No. 1 gas chamber 2. A No. 2 solenoid valve 11 is installed at the end of the installation pipeline 7 near the No. 1 gas chamber 2 to control the gas flow between the installation pipeline 7 and the No. 1 gas chamber 2.

[0024] A control component 12 is installed on the outer side of the housing 1 near the installation pipe 7. The first solenoid valve 10, the second solenoid valve 11, and the lead screw stepper motor 4 are electrically connected to the control component 12. The lead screw stepper motor 4 is fixedly connected to the housing 1 through the mounting plate 13, serving as a support for the end of the second gas chamber 3 away from the first gas chamber 2. A placement platform 14 is provided at the bottom of the outer side of the housing 1. Multiple transmitters 8 are inserted into the holes on the upper surface of the placement platform 14. The placement platform 14 is used to temporarily store the transmitters 8 to be tested for easy access. The end of the lead screw stepper motor 4 away from the piston 5 passes through the housing 1. The end of the lead screw stepper motor 4 extending out of the housing 1 is connected to an indicator plate 15. By observing the position of the indicator plate 15, the remaining gas level in the second gas chamber 3 can be determined.

[0025] During testing, air chamber 2 is connected to an external air source via air inlet pipe 6. Multiple pressure transmitters 8 to be tested are placed on the placement platform 14. The pressure transmitters 8 to be tested and the standard device 9 are respectively installed on the installation pipe 7. Simultaneously, air is supplied to air chamber 2 through air inlet pipe 6. Once the set pressure is reached, the control component 12 controls the first solenoid valve 10 to close, stopping the air supply to air chamber 2. The standard device 9 serves as the benchmark for the multiple pressure transmitters 8 to be tested. By comparing the readings of the standard device 9 with those of the pressure transmitters 8 to be tested, the pass / fail status of the pressure transmitters 8 is determined. 8. During testing, the rotation of the lead screw stepper motor 4 is controlled by the control component 12. The lead screw of the lead screw stepper motor 4 drives the piston 5 to move up or down, thereby precisely adjusting the gas pressure in the first gas chamber 2. The control component 12 has a control circuit inside and a touch screen is located on the outer part of the housing 1. The rotation of the lead screw stepper motor and the opening or closing of the solenoid valve are controlled by the control screen. The control circuit is a common technology and will not be described in detail here. The control circuit sends out electrical signals to control the rotation of multiple lead screw stepper motors 4 and the opening or closing of the first solenoid valve 10 and the second solenoid valve 11.

[0026] When replacing the pressure transmitter 8 to be tested, the second solenoid valve 11 is closed by the control component 12. Then, the tested pressure transmitter 8 is removed, and another pressure transmitter 8 is removed from the placement platform 14 for replacement. During the replacement process, only the gas in the installation pipeline 7 leaks, while the gas in the first gas chamber 2 does not leak, reducing gas consumption. After replacement, the control screw stepper motor 4 drives the piston 5 to move downward, replenishing the gas in the first gas chamber 2 while precisely adjusting the gas pressure in the first gas chamber 2, further reducing gas waste and simplifying the operation process.

[0027] The standard instrument 9 is a core reference device used to calibrate and verify the measurement accuracy of transmitters. A high-precision digital pressure gauge can be selected as the standard instrument. The accuracy of the digital pressure gauge is higher than that of the device being tested, and it has been verified by a legal metrology institution. Its main function is to provide accurate standard values. By comparing the standard instrument with the output value of the transmitter being tested, it is possible to determine whether the measurement error and accuracy class of the transmitter being tested meet the specified standards.

[0028] The working principle of the above embodiment is as follows: an external air source enters the first air chamber 2 through the air inlet pipe 6 and the first solenoid valve 10. The first air chamber 2 and the second air chamber 3 are connected by a pipeline. The control component 12 drives the lead screw stepper motor 4 to move the piston 5 to adjust the air pressure. The installation pipeline 7 connects the transmitter 8 and the standard 9. The second solenoid valve 11 controls the opening and closing of the air path. In use, the transmitter 8 and the standard 9 are installed in the installation pipeline 7. After the air is supplied to the set pressure, the first solenoid valve 10 is closed. The air pressure is adjusted by the lead screw stepper motor 4 for detection. When the transmitter 8 is replaced, the second solenoid valve 11 is closed. After replacement, the air is replenished by the lead screw stepper motor 4 and the air pressure is adjusted. At the same time, the indicator panel 15 can be observed to understand the gas condition.

[0029] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0030] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to".

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transmitter detection device, characterized by: The device includes a housing (1), a first air chamber (2), and multiple second air chambers (3). The first air chamber (2) is fixed to the bottom surface of the housing (1). The multiple second air chambers (3) are connected to the first air chamber (2) through pipes. A lead screw stepper motor (4) is fixedly connected to the top of the second air chamber (3). A piston (5) is slidably connected to the inner surface of the second air chamber (3). The piston (5) is connected to the lead screw of the lead screw stepper motor (4). An air inlet pipe (6) is connected to one side of the first air chamber (2). An installation pipe (7) is connected to the side of the first air chamber (2) away from the second air chamber (3).

2. A transmitter detection device according to claim 1, characterized in that: The installation pipeline (7) includes three connectors. One connector of the installation pipeline (7) is fixedly connected to the No. 1 gas chamber (2). The other two connectors of the installation pipeline (7) extend out of the housing (1). The other two connectors of the installation pipeline (7) are respectively connected to the installation transmitter (8) and the standard (9).

3. The transmitter detection apparatus of claim 1, wherein: A solenoid valve (10) is installed on the outer side of the air intake pipe (6), and a solenoid valve (11) is installed at the end of the installation pipe (7) near the first air chamber (2).

4. A transmitter detection device according to claim 3, wherein: A control component (12) is installed on the outer side of the housing (1) near the mounting pipe (7). The first solenoid valve (10), the second solenoid valve (11), and the lead screw stepper motor (4) are electrically connected to the control component (12).

5. The transmitter detection apparatus of claim 2, wherein: The lead screw stepper motor (4) is fixedly connected to the housing (1) via the mounting plate (13). The bottom of the outer side of the housing (1) is provided with a placement platform (14), and multiple transmitters (8) are inserted into the holes on the upper surface of the placement platform (14).

6. The transmitter detection apparatus of claim 1, wherein: The end of the lead screw stepper motor (4) away from the piston (5) passes through the housing (1), and the end of the lead screw stepper motor (4) extending out of the housing (1) is connected to an indicator disk (15).

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