Pressure transmitter with protection plate

Abstract

The utility model belongs to the technical field of pressure transmitters, particularly relates to a pressure transmitter provided with a protection plate, and aims to solve the problem that dangerous media are ejected due to potential safety hazards when the pressure transmitter is damaged and replaced because the dangerous media pass through a pipeline and the pressure transmitter cannot be shut down. Comprising a pressure transmitter body and a welding short pipe used for being welded with a pipeline, the end portion of the pressure transmitter body is provided with a matched wiring port, and the outer wall of the bottom end of the pressure transmitter body is provided with an external thread used for installation. When the pressure transmitter body is replaced, communication between dangerous media and the pressure transmitter body can be effectively cut off only by closing the control valve, the dangerous media are prevented from being sprayed out, the safety of the replacement process is greatly improved, and the personal safety of operators and the safety of the surrounding environment are guaranteed; and the sealing performance of the whole device is further improved through the design of the sealing assembly.

Description

Technical Field

[0001] This utility model relates to the field of pressure transmitter technology, and in particular to a pressure transmitter equipped with a protection plate. Background Technology

[0002] A pressure transmitter is a device that converts pressure signals into standard electrical signals. It is widely used in many fields such as industrial production, scientific research, and medicine. When pressure is applied to the measuring diaphragm (pressure sensing element) of the pressure transmitter, it causes the sensing element to generate a corresponding change in electrical signal. This weak electrical signal is first transmitted to the signal conditioning circuit, where it is amplified, filtered, and processed into a standard, transmittable signal.

[0003] A search revealed that patent CN218973715U discloses a high-pressure transmitter resistant to high pressure, and patent CN215726523U discloses a small pressure transmitter that is easy to install. Although both of these pressure transmitters can be connected to pipelines, since the pipelines carry dangerous media and cannot be shut down, if the pressure transmitter is damaged, there is a safety hazard during replacement, which could lead to the leakage of dangerous media.

[0004] To address the aforementioned problems, this utility model document proposes a pressure transmitter equipped with a protection plate. Utility Model Content

[0005] This utility model provides a pressure transmitter with a protection plate, which solves the shortcomings of the prior art, where the pipeline carries a dangerous medium and the machine cannot be stopped. If the pressure transmitter is damaged, there is a safety hazard during replacement, which may lead to the leakage of dangerous medium.

[0006] This utility model provides the following technical solution:

[0007] Pressure transmitters equipped with protection plates include:

[0008] The pressure transmitter body and the welding short pipe for welding to the pipeline are provided. The end of the pressure transmitter body is provided with a matching wiring port. The outer wall of the bottom end of the pressure transmitter body is provided with an external thread for installation. One end of the welding short pipe is connected to a threaded pipe for installation. A control valve is provided between the pressure transmitter body and the welding short pipe to facilitate the replacement of the pressure transmitter body. Both ends of the control valve are provided with corresponding internal thread installation ports.

[0009] A sealing assembly, located on a control valve, is used to improve the sealing performance of the connection.

[0010] A protective component, located on the pressure transmitter body, is used to mitigate the impact of accidental collisions.

[0011] In one possible design, the sealing assembly includes a first sealing ring and a second sealing ring respectively disposed at both ends of the control valve. The first sealing ring is used to improve the sealing performance at the connection between the pressure transmitter body and the output end of the control valve, and the second sealing ring is used to improve the sealing performance at the connection between the threaded pipe and the input end of the control valve.

[0012] In one possible design, one end of the control valve is provided with a first annular groove for engaging and fixing the first sealing ring.

[0013] In one possible design, the unwelded end of the welded short pipe is provided with a second annular groove for snapping and fixing the second sealing ring.

[0014] In one possible design, the protective assembly includes a protective cover that covers the pressure transmitter body but is not closed at the bottom, with a notch on one side for a wiring port to pass through.

[0015] In one possible design, the protective cover is filled with a cushioning sponge liner, which has slits for easy wrapping and covering of the pressure transmitter body.

[0016] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.

[0017] The working principle and usage process of this technical solution are as follows:

[0018] During installation, the short welded pipe is welded to the notch on the side wall of the pipeline transporting the hazardous medium to ensure welding quality. After welding, sealant is sprayed to ensure the sealing between the pipeline and the short welded pipe and prevent leakage of hazardous media. Then, at the threaded end of the short welded pipe, a threaded connection is made through the internal thread mounting port of the control valve. The first sealing ring is inserted into the first annular groove of the control valve. Then, the external thread at the bottom of the pressure transmitter body is threaded to the internal thread mounting port of the control valve. At this time, the first sealing ring is squeezed between the pressure transmitter body and the output end of the control valve, improving the sealing of the connection. Then, the second sealing ring is inserted into the second annular groove at the unwelded end of the short welded pipe. When the threaded pipe is connected to the input end of the control valve, the second sealing ring improves the sealing at this point. Next, the protective cover plate filled with sponge lining is put on the top of the pressure transmitter body, so that the wiring port is passed out from the notch on one side of the protective cover plate, completing the installation of the protective components.

[0019] The pressure transmitter is electrically connected to external control systems and display devices via the wiring port at the end of the pressure transmitter body to ensure normal signal transmission, normal operation of the pressure transmitter and feedback of pressure data. The pressure of the dangerous medium in the pipeline is transmitted to the pressure transmitter body through the welded short pipe and control valve. The pressure transmitter body measures the pressure and converts the pressure signal into an electrical signal through the wiring port and transmits it to the external equipment. During this process, the first and second sealing rings of the sealing assembly ensure the sealing between the pressure transmitter body and the output end of the control valve, and between the threaded pipe and the input end of the control valve, respectively, to prevent leakage of dangerous media. The protective cover and sponge lining of the protective assembly protect the pressure transmitter body, reduce the impact of accidental impacts, and ensure the stable operation of the pressure transmitter body.

[0020] When the pressure transmitter body is damaged and needs to be replaced, first close the control valve to cut off the passage between the hazardous medium in the pipeline and the pressure transmitter body. Since the control valve is closed and the sealing assembly ensures the sealing at both ends of the control valve, the pressure transmitter body can be safely disassembled at this time. By rotating the pressure transmitter body, separate it from the control valve, remove the damaged pressure transmitter body, and install the new pressure transmitter body. Following the installation steps, connect the new pressure transmitter body to the internal thread mounting port at one end of the control valve through the external thread, ensuring that the first sealing ring performs its sealing function properly. After the installation is completed, open the control valve, and the new pressure transmitter body will start working normally, measuring the pressure in the pipeline and transmitting signals.

[0021] This utility model has the following beneficial effects:

[0022] This invention incorporates a control valve between the pressure transmitter body and the welded short pipe. When replacing the pressure transmitter body, simply closing the control valve effectively cuts off the connection between the hazardous medium and the pressure transmitter body, preventing the hazardous medium from spraying out. This significantly improves the safety of the replacement process and ensures the personal safety of the operators and the safety of the surrounding environment.

[0023] The design of the sealing component in this invention further improves the overall sealing performance of the device. The first and second sealing rings are respectively located at both ends of the control valve, and the control valve is provided with a first annular groove for snapping and fixing the first sealing ring. The welded short pipe is provided with a second annular groove for snapping and fixing the second sealing ring. This structure allows the sealing rings to be accurately installed and effectively compressed at the connection points during installation, thereby significantly improving the sealing performance at the connection between the pressure transmitter body and the output end of the control valve, and between the threaded pipe and the input end of the control valve. This effectively prevents leakage of hazardous media and reduces the safety accidents and environmental pollution that may be caused by media leakage.

[0024] In this invention, the protective component provides excellent protection for the pressure transmitter body, reducing direct damage to the pressure transmitter body, extending the service life of the pressure transmitter body, reducing equipment replacement costs and production interruption risks caused by accidental damage, and improving the stability and reliability of the entire system. Attached Figure Description

[0025] Figure 1 A three-dimensional structural diagram of a pressure transmitter with a protective plate provided in an embodiment of this utility model;

[0026] Figure 2 Another structural schematic diagram of a pressure transmitter with a protective plate provided in an embodiment of this utility model;

[0027] Figure 3 A schematic diagram of the disassembly structure of a pressure transmitter with a protective plate provided in an embodiment of this utility model;

[0028] Figure 4 A schematic diagram of the protective assembly structure of a pressure transmitter with a protective plate provided in an embodiment of this utility model.

[0029] Reference numerals in the attached drawings: 1. Pressure transmitter body; 2. Wiring port; 3. External thread; 4. Welded short pipe; 5. Control valve; 6. Internal thread mounting port; 7. First sealing ring; 8. First annular groove; 9. Second sealing ring; 10. Second annular groove; 11. Protective cover plate; 12. Notch; 13. Sponge liner; 14. Cutout; 15. Threaded pipe. Detailed Implementation

[0030] 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.

[0031] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements 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.

[0032] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0033] Example 1

[0034] Please refer to Figure 1-4 Pressure transmitters equipped with protection plates are used in the field of pressure transmitters, including:

[0035] The pressure transmitter body 1 and the welded short pipe 4 are configured. The end of the pressure transmitter body 1 is provided with a wiring port 2 for connecting a cable for signal transmission. An external thread 3 is provided on the outer wall of the bottom end of the pressure transmitter body 1 to facilitate its installation in a suitable position. One end of the welded short pipe 4 is connected to a threaded pipe 15, which also has an internal thread for threaded connection with the interface of the pipeline or other equipment, so as to achieve a stable connection between the welded short pipe 4 and the pipeline. A control valve 5 is provided between the pressure transmitter body 1 and the welded short pipe 4. Both ends of the control valve 5 are provided with internal threaded mounting ports 6, which match the external thread 3 of the pressure transmitter body 1 and the internal thread of the threaded pipe 15, respectively, so as to ensure the stability and sealing of the connection. When the pressure transmitter body 1 needs to be replaced, simply close the control valve 5 to cut off the flow of the medium in the pipeline, prevent the medium from spraying out during the replacement process, and improve the safety of operation.

[0036] To improve the sealing performance at the connection, a sealing assembly is provided, which includes a first sealing ring 7 and a second sealing ring 9, respectively located at both ends of the control valve 5. The first sealing ring 7 is used to improve the sealing performance at the connection between the pressure transmitter body 1 and the output end of the control valve 5, while the second sealing ring 9 is used to improve the sealing performance at the connection between the threaded pipe 15 and the input end of the control valve 5. In this way, even if the pressure of the medium in the pipeline is high, medium leakage can be effectively prevented.

[0037] To mitigate the impact of accidental impacts on the pressure transmitter body 1, a protective assembly is also provided. This protective assembly includes a protective cover plate 11 that covers the pressure transmitter body 1 but is not closed at the bottom. One side of the protective cover plate 11 has a notch 12 for the wiring port 2 to pass through, so as not to affect the normal wiring of the pressure transmitter body 1.

[0038] The protective cover 11 is filled with a sponge liner 13, and the sponge liner 13 has a cutout 14 to facilitate wrapping and covering the pressure transmitter body 1. The sponge liner 13 has good cushioning performance, which can effectively reduce the damage to the pressure transmitter body 1 caused by accidental impact. At the same time, the design of the cutout 14 makes it easier for the protective cover 11 to wrap the pressure transmitter body 1 for installation.

[0039] Example 2

[0040] Improvements based on Example 1:

[0041] Please refer to Figure 3One end of the control valve 5 is provided with a first annular groove 8 for snapping and fixing the first sealing ring 7. Similarly, the unwelded end of the welded short pipe 4 is provided with a second annular groove 10 for snapping and fixing the second sealing ring 9. This snapping and fixing method is not only convenient to install, but also ensures the stability and sealing of the sealing ring at the connection.

[0042] However, as is well known to those skilled in the art, the working principle and wiring method of the pressure transmitter body 1 and the control valve 5 are commonplace and are all conventional means or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0043] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A pressure transmitter equipped with a protection plate, characterized in that, include: The pressure transmitter body (1) and the welding short pipe (4) for welding to the pipeline are provided. The end of the pressure transmitter body (1) is provided with a matching wiring port (2). The outer wall of the bottom end of the pressure transmitter body (1) is provided with an external thread (3) for installation. One end of the welding short pipe (4) is connected to a threaded pipe (15) for installation. A control valve (5) is provided between the pressure transmitter body (1) and the welding short pipe (4) to facilitate the replacement of the pressure transmitter body (1). Both ends of the control valve (5) are provided with corresponding internal thread installation ports (6). A sealing assembly, located on the control valve (5), is used to improve the sealing performance of the connection. A protective component, located on the pressure transmitter body (1), is used to mitigate the impact of accidental impacts.

2. The pressure transmitter with a protection plate according to claim 1, characterized in that, The sealing assembly includes a first sealing ring (7) and a second sealing ring (9) respectively disposed at both ends of the control valve (5). The first sealing ring (7) is used to improve the sealing performance at the connection between the pressure transmitter body (1) and the output end of the control valve (5), and the second sealing ring (9) is used to improve the sealing performance at the connection between the threaded pipe (15) and the input end of the control valve (5).

3. The pressure transmitter with a protection plate according to claim 2, characterized in that, One end of the control valve (5) is provided with a first annular groove (8) for locking and fixing the first sealing ring (7).

4. The pressure transmitter with a protection plate according to claim 2, characterized in that, The unwelded end of the welded short pipe (4) is provided with a second annular groove (10) for snapping and fixing the second sealing ring (9).

5. The pressure transmitter with a protection plate according to claim 1, characterized in that, The protective assembly includes a protective cover (11) that covers the pressure transmitter body (1) and is not closed at the bottom. One side of the protective cover (11) is provided with a notch (12) for the wiring port (2) to pass through.

6. The pressure transmitter with a protection plate according to claim 5, characterized in that, The protective cover (11) is filled with a sponge liner (13) for cushioning, and the sponge liner (13) has a cut (14) for easy wrapping and covering of the pressure transmitter body (1).

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