Explosion-proof pressure transmitter

Abstract

The utility model belongs to the field of pressure measurement, particularly relates to an explosion-proof pressure transmitter, and aims to solve the problem that the measurement and the safety are affected to a certain extent due to the fact that the most common connection of the conventional pressure transmitter is realized through threads and the connection is unstable after the conventional pressure transmitter is used for a long time. According to the technical scheme, the transmitter comprises a transmitter body and a connector pipe arranged at the bottom of the outer wall of the transmitter body. The connecting mechanism is used for connecting and installing the transmitter main body and the pipeline, the connecting mechanism is arranged on the outer wall of the interface pipe, the connecting mechanism comprises a connecting pipe, a thread at the bottom end of the connecting pipe extends into the pipeline and is communicated with the pipeline, and the transmitter main body can be stably installed on the pipeline through the connecting mechanism at the bottom. In addition, the transmitter main body can be quickly and independently separated out, so that the transmitter can be conveniently checked, maintained and the like in the later period.

Description

Technical Field

[0001] This utility model relates to the field of pressure measurement technology, and in particular to an explosion-proof pressure transmitter. Background Technology

[0002] Explosion-proof pressure transmitters are devices used to measure the pressure of media in pipelines in flammable and explosive environments. Through their internal pressure-sensitive elements, they convert the pressure changes of the media in the pipeline into electrical signals, thereby enabling real-time monitoring of pipeline pressure. This is of great significance for ensuring production safety and preventing accidents caused by abnormal pressure.

[0003] However, traditional pressure transmitters are most commonly installed via threads. After prolonged use, this has led to issues with connection instability, impacting measurement accuracy and safety. Therefore, a new type of pressure transmitter is needed to address these problems. Utility Model Content

[0004] The purpose of this invention is to solve the problem of unstable connection in the existing technology, which has a certain impact on measurement and safety, and to propose an explosion-proof pressure transmitter.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An explosion-proof pressure transmitter includes a transmitter body and an interface pipe disposed at the bottom of the outer wall of the transmitter body;

[0007] A connecting mechanism is used to connect and install the transmitter body and the pipeline. The connecting mechanism is disposed on the outer wall of the interface pipe. The connecting mechanism includes a connecting pipe, the bottom end of which is threaded into the inside of the pipeline and connected. The bottom end of the interface pipe is threaded into the inside of the connecting pipe and connected. A shell is slidably fitted on the outer wall of the interface pipe. A polygonal groove is formed on the inner wall of the shell. A polygonal frame is fixedly fitted on the outer wall of the connecting pipe, and the inner wall of the polygonal groove matches the outer wall of the polygonal frame.

[0008] In one possible design, a compression spring is fitted on the outer wall of the interface tube, and the two ends of the compression spring are respectively fixed on the outer wall of the transmitter body and the outer wall of the housing.

[0009] In one possible design, the connecting mechanism further includes two clamping shells that are rotatably disposed relative to each other, both of which are fitted onto the outer wall of the pipe.

[0010] In one possible design, two fixing plates are fixedly installed on the outer walls of both clamping shells, and fixing holes are provided on the surface of the fixing plates.

[0011] In one possible design, a semi-ring is fixedly fitted on the outer wall of the clamping shell, the top of the semi-ring has multiple insertion holes, and the bottom of the outer shell has multiple insertion rods fixedly installed, with each insertion rod cooperating with a multiple insertion hole.

[0012] In one possible design, the surface of the transmitter body is fitted with a display screen.

[0013] In this application, during actual use, the two clamps are rotated open, fitted onto the outer wall of the pipe connection, and then closed. Bolts are then passed through the fixing holes for fixation. The connecting pipe is then rotated and screwed into the pipe connection port. The interface pipe at the bottom of the transmitter body is then tightened inside the connecting pipe. When rotating the transmitter body, the outer casing is first moved upwards, then returned downwards by the force of the compression spring, fitting onto the outer wall of the polygonal frame, thus fixing the transmitter body and the connecting pipe. As the outer casing moves downwards, it also moves the bottom insert rod downwards, allowing the bottom end of the rod to insert into the socket, ultimately completing the installation of the transmitter body, connecting pipe, and pipe. The pressure in the pipe is introduced into the transmitter body through the connecting pipe, causing the sensitive element inside the transmitter body to elastically deform. This deformation leads to changes in its internal resistance, capacitance, or other electrical parameters. These changes are converted into electrical signals by the internal measuring circuit and transmitted to the control system or display instrument. At the receiving end, these signals are decoded and converted into readable pressure values ​​for monitoring and recording by the operator. When maintenance or inspection of the transmitter body is required, the transmitter body can be rotated and separated by moving the housing upwards to detach it from the outer wall of the polygonal frame.

[0014] In this utility model, the explosion-proof pressure transmitter, through the polygonal groove and polygonal frame, can restrict the rotation of the transmitter body after connecting the transmitter body to the connecting pipe, thereby improving the stability of the connection.

[0015] In this utility model, the explosion-proof pressure transmitter can stably install the transmitter body and the connecting pipe on the pipeline through the clamp, and the three can be connected together through the plug rod to restrict the rotation of the connecting pipe, thereby further improving the stability after installation.

[0016] In this invention, the transmitter body can be securely installed on the pipeline via the bottom connecting mechanism to achieve the measurement effect. Furthermore, the transmitter body can be quickly separated to facilitate subsequent inspection and maintenance. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the main structure of an explosion-proof pressure transmitter proposed in this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of an explosion-proof pressure transmitter housing proposed in this utility model.

[0019] Figure 3 This is a cross-sectional structural diagram of an explosion-proof pressure transmitter proposed in this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged view of the structure of part A in the middle.

[0021] In the diagram: 1. Transmitter body; 2. Connecting pipe; 3. Clamp; 4. Fixing plate; 5. Half ring; 6. Compression spring; 7. Polygonal frame; 8. Housing; 9. Polygonal groove; 10. Fixing hole; 11. Insertion hole; 12. Insertion rod; 13. Interface pipe; 14. Display screen. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1

[0024] Reference Figure 1 A pressure transmitter includes: a transmitter body 1 and an interface pipe 13 disposed at the bottom of the outer wall of the transmitter body 1. A display screen 14 is mounted on the surface of the transmitter body 1. The display screen 14 can display the pressure signals received and converted by the transmitter body 1 in real time, facilitating monitoring and control by the user.

[0025] To ensure the transmitter can be securely installed for future use, a connection mechanism is provided. This connection mechanism is located on the outer wall of the interface pipe 13 and specifically includes the connecting pipe 2. The bottom end of the connecting pipe 2 is threaded into the interior of the pipe and is connected, and the bottom end of the interface pipe 13 is also threaded into the interior of the connecting pipe 2 and is connected.

[0026] This application can be used in the field of pressure measurement, or in other fields applicable to this application.

[0027] Example 2

[0028] refer to Figure 3-4An improvement upon Embodiment 1: An explosion-proof pressure transmitter, applied in the field of pressure measurement, features a slidable outer shell 8 fitted onto the outer wall of the interface pipe 13. The inner wall of the outer shell 8 has a polygonal groove 9, while the outer wall of the connecting pipe 2 is fixedly fitted with a polygonal frame 7. The inner wall of the polygonal groove 9 mates with the outer wall of the polygonal frame 7; this mating method restricts the rotation of the interface pipe 13 relative to the connecting pipe 2, thereby ensuring stability after installation.

[0029] Furthermore, to ensure that the housing 8 can be stably fitted onto the polygonal frame 7, a compression spring 6 is fitted onto the outer wall of the interface tube 13. The two ends of the compression spring 6 are fixedly mounted on the outer wall of the transmitter body 1 and the outer wall of the housing 8, respectively. This elastic force allows the housing 8 to fit more tightly against the polygonal frame 7, thereby improving the stability of the connection.

[0030] Reference Figure 2 The connecting mechanism also includes two mutually rotatable clamping shells 3, both of which are fitted onto the outer wall of the pipe. Two fixing plates 4 are fixedly installed on the outer wall of each clamping shell 3, and fixing holes 10 are formed on the surface of each fixing plate 4. The clamping shells 3 can be securely fixed to the pipe by passing bolts or other fasteners through the fixing holes 10.

[0031] Reference Figure 4 To connect the outer shell 8 to the clamping shell 3, a semi-ring 5 is fixedly fitted onto the outer wall of the clamping shell 3, and multiple insertion holes 11 are opened at the top of the semi-ring 5. Multiple insertion rods 12 are fixedly installed at the bottom of the outer shell 8, and the insertion rods 12 cooperate with the insertion holes 11.

[0032] Specifically, the two clamps 3 are rotated open, and then closed after being placed on the outer wall of the pipe connection. Bolts are then used to pass through the fixing holes 10 for fixation. Next, the connecting pipe 2 is rotated and screwed into the pipe connection port. Then, the interface pipe 13 at the bottom of the transmitter body 1 is tightened inside the connecting pipe 2. When rotating the transmitter body 1, the outer shell 8 is first moved upward, and then returned downward by the force of the compression spring 6, so that it is placed on the outer wall of the polygonal frame 7, thereby fixing the transmitter body 1 and the connecting pipe 2. When the outer shell 8 moves downward, the outer shell 8 will drive the bottom insertion rod 12 to move downward together, so that the bottom end of the insertion rod 12 is inserted into the insertion hole 11. Finally, the installation of the transmitter body 1, the connecting pipe 2 and the pipe is completed. The pressure in the pipeline is introduced into the transmitter body 1 through the connecting pipe 2, causing the sensitive element inside the transmitter body 1 to undergo elastic deformation. This deformation results in changes in the internal resistance, capacitance, or other electrical parameters. These changes are converted into electrical signals by the internal measuring circuit and transmitted to the control system or display instrument. At the receiving end, these signals are decoded and converted into readable pressure values ​​for monitoring and recording by the operator. When maintenance or inspection of the transmitter body 1 is required, the housing 8 is moved upwards to detach it from the outer wall of the polygonal frame 7, allowing the transmitter body 1 to be rotated and separated individually.

[0033] However, as is well known to those skilled in the art, the working principle and wiring method of the transmitter body 1 are commonplace and are all conventional means or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An explosion-proof pressure transmitter, characterized in that, include: Transmitter body (1) and interface pipe (13) located at the bottom of the outer wall of transmitter body (1); A connecting mechanism is used to connect and install the transmitter body (1) and the pipeline. The connecting mechanism is set on the outer wall of the interface pipe (13). The connecting mechanism includes a connecting pipe (2). The bottom end of the connecting pipe (2) extends into the pipeline and is connected. The bottom end of the interface pipe (13) extends into the connecting pipe (2) and is connected. The outer wall of the interface pipe (13) is slidably fitted with a shell (8). The inner wall of the shell (8) is provided with a polygonal groove (9). The outer wall of the connecting pipe (2) is fixedly fitted with a polygonal frame (7), and the inner wall of the polygonal groove (9) cooperates with the outer wall of the polygonal frame (7).

2. The explosion-proof pressure transmitter according to claim 1, characterized in that, The outer wall of the interface tube (13) is fitted with a compression spring (6), and the two ends of the compression spring (6) are respectively fixed on the outer wall of the transmitter body (1) and the outer wall of the outer shell (8).

3. The explosion-proof pressure transmitter according to claim 2, characterized in that, The connecting mechanism also includes two clamping shells (3) that are rotatably arranged in relation to each other, and both clamping shells (3) are fitted onto the outer wall of the pipe.

4. The explosion-proof pressure transmitter according to claim 3, characterized in that, Two fixing plates (4) are fixedly installed on the outer walls of the two clamping shells (3), and fixing holes (10) are opened on the surface of the fixing plates (4).

5. The explosion-proof pressure transmitter according to claim 4, characterized in that, The outer wall of the clamp (3) is fixedly fitted with a semi-ring (5), the top of the semi-ring (5) is provided with multiple insertion holes (11), and the bottom of the outer shell (8) is fixedly provided with multiple insertion rods (12), and the multiple insertion rods (12) respectively cooperate with the multiple insertion holes (11).

6. The explosion-proof pressure transmitter according to claim 4, characterized in that, The transmitter body (1) is equipped with a display screen (14) on its surface.

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