Self-exhaust differential pressure transmitter

Abstract

The utility model discloses a self-exhaust differential pressure transmitter, relates to the technical field of differential pressure transmitters, and aims to solve the problems that an existing differential pressure transmitter lacks a self-exhaust structure, internal residual gas cannot be discharged during repeated detection, the precision of detection data is easily affected, and functionality and practicability need to be improved. According to the technical scheme, the device is characterized by comprising a detection seat body, two airflow channels are formed in the detection seat body, a sliding hole is formed in the side surface of the detection seat body, a piston rod is slidably installed in the sliding hole, one end of the piston rod is fixedly connected with a piston block, and the piston block is located in the airflow channels; a mounting hole is formed in the middle position of the detection seat body, an electric push rod is fixedly mounted in the mounting hole, and the telescopic end of the electric push rod is fixedly connected with a linkage seat. And the effects that the internal residual gas can be automatically exhausted, the precision of detection data during repeated detection can be ensured, and functionality and practicability are high are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of differential pressure transmitters, and particularly relates to a differential pressure transmitter with self-exhaust function. Background Art

[0002] As a pressure detection component, the differential pressure transmitter is widely used in the fields of measuring the liquid level, flow rate and pressure of liquids, gases or steam, and can provide management data for pipeline fluid transportation, facilitating remote control operations by staff.

[0003] The existing differential pressure transmitter lacks a self-exhaust structure and cannot exhaust the residual gas inside during repeated detections, which easily affects the accuracy of detection data, and both its functionality and practicality need to be improved. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a differential pressure transmitter with self-exhaust function, which can independently exhaust the residual gas inside, ensure the accuracy of detection data during repeated detections, and has strong functionality and practicality.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A differential pressure transmitter with self-exhaust function, including a detection seat body, two air flow channels are arranged inside the detection seat body, a sliding hole is arranged on the side surface of the detection seat body, and a piston rod is slidably installed inside the sliding hole. One end of the piston rod is fixedly connected with a piston block, and the piston block is located inside the air flow channel.

[0007] By adopting the above technical solution, the telescopic movement of the piston rod can drive the piston block to move inside the air flow channel, thereby realizing the exhaust operation.

[0008] Further, an installation hole is arranged at the middle position of the detection seat body, and an electric push rod is fixedly installed inside the installation hole. The telescopic end of the electric push rod is fixedly connected with a linkage seat, and one ends of the two piston rods are respectively fixedly connected with the two ends of the linkage seat.

[0009] By adopting the above technical solution, the electric push rod can be used to drive the linkage seat to move, and then drive the piston rod and the piston block to move.

[0010] Further, a detection cavity is arranged inside the detection seat body. The detection cavity is communicated with the air flow channel, and the central axes of the detection cavity and the air flow channel are vertically distributed.

[0011] By adopting the above technical solution, an installation position can be effectively provided for the detection structure.

[0012] Furthermore, a pressure detection structure is fixedly installed on the inner end surface of the detection cavity. There are two pressure detection structures, which are respectively located inside two independent detection cavities.

[0013] By adopting the above technical solution, the pressure of the corresponding gas can be detected by the pressure detection structure.

[0014] Furthermore, a transmitter processing unit is fixedly installed on the upper surface of the detection seat body. The transmitter processing unit is electrically connected to the two pressure detection structures respectively.

[0015] By adopting the above technical solution, the detection data can be effectively processed.

[0016] Furthermore, two connection ends are integrally connected to the outer surface of one side of the detection seat body. The two connection ends correspond to the positions of the two air flow channels respectively.

[0017] By adopting the above technical solution, it can be conveniently connected to an external pipeline.

[0018] In summary, the beneficial technical effects of the present utility model are as follows:

[0019] During the repeated detection process of the present utility model, the electric push rod can be started to make the electric push rod contract. Under the linkage of the linkage seat, the two piston rods extend into the interior of the detection seat body. Furthermore, the piston block at one end of the piston rod moves inside the air flow channel, and then the gas inside the air flow channel can be effectively discharged, making the inside of the air flow channel in a vacuum state, facilitating subsequent differential pressure detection operations, effectively realizing self-exhaust operation, avoiding the influence of the remaining gas on the new round of detection data, effectively improving the accuracy of the detection data, and improving the overall functionality and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the first perspective view of the three-dimensional structure of the present utility model;

[0021] Figure 2 is the second perspective view of the three-dimensional structure of the present utility model;

[0022] Figure 3 is the internal structure diagram of the present utility model.

[0023] In the figure: 1, detection seat body; 2, transmitter processing unit; 3, electric push rod; 4, connection end; 5, piston rod; 6, linkage seat; 7, detection cavity; 8, pressure detection structure; 9, piston block; 10, air flow channel. DETAILED DESCRIPTION OF THE INVENTION

[0024] The following further details the method of the present utility model with reference to the accompanying drawings.

[0025] Reference Figure 1 、 Figure 2 、 Figure 3 , a self-exhaust differential pressure transmitter, comprising a detection seat body 1. Two air flow channels 10 are arranged inside the detection seat body 1. A sliding hole is arranged on the side surface of the detection seat body 1, and a piston rod 5 is slidably installed inside the sliding hole. One end of the piston rod 5 is fixedly connected with a piston block 9. The piston block 9 is located inside the air flow channel 10. An installation hole is arranged at the middle position of the detection seat body 1, and an electric push rod 3 is fixedly installed inside the installation hole. The telescopic end of the electric push rod 3 is fixedly connected with a linkage seat 6. One ends of the two piston rods 5 are respectively fixedly connected with the two ends of the linkage seat 6. Among them, during the repeated detection process, the electric push rod 3 is started to make the electric push rod 3 contract. Under the linkage of the linkage seat 6, the two piston rods 5 extend into the detection seat body 1. Furthermore, the piston block 9 at one end of the piston rod 5 moves inside the air flow channel 10, and then the gas inside the air flow channel 10 can be effectively discharged, so that the inside of the air flow channel 10 is in a vacuum state, which is convenient for subsequent differential pressure detection operations. The self-exhaust operation can be effectively realized, the influence of the remaining gas on the new round of detection data is avoided, and the accuracy of the detection data is effectively improved. The overall functionality and practicability are both improved.

[0026] Reference Figure 3 , a detection cavity 7 is arranged inside the detection seat body 1. The detection cavity 7 is communicated with the air flow channel 10, and the central axes of the detection cavity 7 and the air flow channel 10 are vertically distributed. A pressure detection structure 8 is fixedly installed on the inner end surface of the detection cavity 7. There are two pressure detection structures 8, and they are respectively located inside two independent detection cavities 7. A transmitter processing unit 2 is fixedly installed on the upper surface of the detection seat body 1. The transmitter processing unit 2 is electrically connected with the two pressure detection structures 8 respectively. Among them, the gas to be detected can be introduced into the detection cavity 7 through the air flow channel 10. At this time, the pressure detection structure 8 on the inner end surface of the detection cavity 7 can effectively detect the gas pressure and transmit the pressure data to the inside of the transmitter processing unit 2. After receiving the data, the transmitter processing unit 2 processes it to obtain the differential pressure value.

[0027] Reference Figure 1 、 Figure 3 , two connection ends 4 are integrally connected to the outer surface of one side of the detection seat body 1. The two connection ends 4 correspond to the positions of the two air flow channels 10 respectively. Among them, the transmitter can be conveniently installed on the gas pipeline by using the connection ends 4, and the installation is convenient.

[0028] Working principle: When in use, the transmitter is conveniently installed on the gas pipeline by means of the connecting end 4. At this time, the gas in the pipeline can enter the interior of the air flow channel 10 and then enter the interior of the detection chamber 7. At this time, the pressure detection structure 8 installed on the inner end face of the detection chamber 7 can effectively detect the gas pressure and transmit the pressure data to the interior of the transmitter processing unit 2. After receiving the data, the transmitter processing unit 2 processes it to obtain the differential pressure value. When the transmitter repeatedly detects the gas pressure in the pipeline, the electric push rod 3 is started, causing the electric push rod 3 to contract. Under the linkage of the linkage seat 6, the two piston rods 5 extend into the interior of the detection seat body 1, and further cause the piston block 9 at one end of the piston rod 5 to move inside the air flow channel 10, thereby effectively discharging the gas inside the air flow channel 10 and making the interior of the air flow channel 10 in a vacuum state, facilitating subsequent differential pressure detection operations.

[0029] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A self-exhaust differential pressure transmitter, comprising a detection seat (1), characterized in that: Two air flow channels (10) are arranged inside the detection seat body (1), a sliding hole is arranged on the side surface of the detection seat body (1), and a piston rod (5) is slidably installed inside the sliding hole, one end of the piston rod (5) is fixedly connected to a piston block (9), and the piston block (9) is located inside the air flow channel (10).

2. A self-exhaust differential pressure transmitter according to claim 1, characterized in that: A mounting hole is provided at the middle position of the detection seat body (1), and an electric push rod (3) is fixedly installed inside the mounting hole. The telescopic end of the electric push rod (3) is fixedly connected to a linkage seat (6), and one end of the two piston rods (5) is fixedly connected to the two ends of the linkage seat (6) respectively.

3. A self-exhaust differential pressure transmitter according to claim 1, characterized in that: A detection cavity (7) is provided on the inner side of the detection seat body (1), the detection cavity (7) is communicated with the air flow channel (10), and the detection cavity (7) and the central axis of the air flow channel (10) are perpendicularly distributed.

4. A self-exhaust differential pressure transmitter according to claim 3, characterized in that: A pressure detection structure (8) is fixedly mounted on the inner end surface of the detection cavity (7); two pressure detection structures (8) are provided and are respectively located inside two mutually independent detection cavities (7).

5. A self-exhaust differential pressure transmitter according to claim 4, characterized in that: A transmitter processing unit (2) is fixedly mounted on the upper surface of the detection seat (1), and the transmitter processing unit (2) is electrically connected to two pressure detection structures (8) respectively.

6. A self-exhaust differential pressure transmitter according to claim 1, characterized in that: Two connection ends (4) are integrally connected to an outer surface of one side of the detection seat body (1), and the two connection ends (4) correspond to the positions of the two air flow channels (10) respectively.

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