Negative pressure measurement pressure transmitter

Abstract

The utility model discloses a negative pressure measurement pressure transmitter, which belongs to the technical field of pressure transmitters, and comprises a pressure transmitter body, a pipeline to be measured and two buffer assemblies, the number of the buffer assemblies is two, and each buffer assembly comprises an arc-shaped connecting plate and an arc-shaped pressing plate. The top surface of the arc-shaped connecting plate is connected with the bottom surface of the pressure transmitter body, and the bottom surface of the arc-shaped pressing plate is in contact with the upper surface of a to-be-detected pipeline. Through the structural design of the buffer assembly, a good buffer protection effect can be achieved on the pressure transmitter, the operation stability of the pressure transmitter is greatly improved, and the service life of the pressure transmitter is prolonged. The service life of the pressure transmitter is prolonged; according to the utility model, through the structural design of the connecting pipe and the locking block, the pressure transmitter can be conveniently mounted on the connecting pipe of the pipeline, so that the pressure transmitter is convenient to disassemble and assemble, and the pressure transmitter is prevented from being damaged in the mounting process.

Description

Technical Field

[0001] This utility model relates to the field of pressure transmitter technology, specifically a negative pressure measuring pressure transmitter. Background Technology

[0002] A negative pressure transmitter, also known as a negative pressure transducer or negative pressure transmitter, is a sensor specifically designed for measuring negative pressure. Its principle is based on converting a negative pressure signal into an electrical signal using a pressure sensor. When negative pressure acts on the pressure sensor, the sensitive element inside the sensor (such as a piezoelectric element or a capacitive element) undergoes deformation or charge change, thereby generating an electrical signal proportional to the negative pressure. This electrical signal is then amplified, filtered, and linearized by a circuit, ultimately outputting a standard electrical signal for subsequent data acquisition, processing, and display.

[0003] However, when measuring negative pressure in pipelines, the pressure transmitter is usually installed directly on the pipeline connection. When the pipeline vibrates, the pipeline will cause the pressure transmitter to shake through the pipe joint. Existing technology is not able to effectively buffer and protect the pressure transmitter from the impact and vibration, which can easily affect the monitoring performance of the pressure transmitter, reduce the service life of the pressure transmitter, and the pressure transmitter needs to be manually twisted and installed on the pipeline connection, which is inconvenient and can easily damage the pressure transmitter. Utility Model Content

[0004] The purpose of this utility model is to provide a negative pressure measuring pressure transmitter. Through the structural design of the buffer component, connecting pipe and locking block, the pressure transmitter can play a good buffering and protection role, and the pressure transmitter can be easily disassembled and installed. It solves the problems of difficulty in effectively buffering and protecting the pressure transmitter and the inconvenience of installing and operating the pressure transmitter.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model relates to a negative pressure measuring pressure transmitter, comprising a pressure transmitter body, a pipe to be measured, and a buffer assembly. The buffer assembly includes two components: an arc-shaped connecting plate and an arc-shaped pressure plate. The top surface of the arc-shaped connecting plate is connected to the bottom surface of the pressure transmitter body, and the bottom surface of the arc-shaped pressure plate is in contact with the upper surface of the pipe to be measured. A spring rod is located at the bottom center of the arc-shaped connecting plate, and the bottom end of the spring rod is connected to the top center of the arc-shaped pressure plate. Two hydraulic rods are rotatably mounted on the bottom of the arc-shaped connecting plate, and the bottom ends of the hydraulic rods are rotatably connected to the top surface of the arc-shaped pressure plate.

[0007] Furthermore, a connecting pipe is provided on the pipe to be tested, the connecting pipe is connected to the inside of the pipe to be tested, a limit slip ring is provided at the top of the connecting pipe, and a locking block is fitted on the outer surface of the top of the connecting pipe.

[0008] Furthermore, a circular groove is provided at the bottom of the locking block, which communicates with the interior of the connecting pipe. The top outer surface of the connecting pipe mates with the circular groove, and an annular groove is provided on the inner wall of the circular groove. The limiting slip ring mates with the annular groove.

[0009] Furthermore, a threaded through hole is provided on the top of the locking block, and the threaded through hole is connected to the circular groove.

[0010] Furthermore, a pipe fitting is provided at the bottom of the pressure transmitter body, and the outer surface of the pipe fitting is threaded, with the thread engaging with the threaded through hole.

[0011] Furthermore, the bottom surface of the arc-shaped pressure plate is provided with an anti-slip part, the surface of which contacts the upper surface of the pipe to be tested, and the anti-slip part is a rubber protrusion.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model, through the structural design of the buffer assembly, utilizes the contraction and rebound of two spring rods and the rotation and retraction of two pairs of hydraulic rods to effectively buffer and reduce vibration of the pressure transmitter body. This provides excellent buffering and protection for the pressure transmitter, preventing it from being subjected to excessive impact and vibration, ensuring the performance and monitoring capabilities of the pressure transmitter, greatly improving its operational stability, and extending its service life.

[0014] 2. This utility model, through the structural design of the connecting pipe and the locking block, allows for the relative rotation between the locking block and the pipe joint when the locking block is rotated counterclockwise during use. This causes the pipe joint to separate from the threaded through hole, enabling the disassembly of the pressure transmitter body. This facilitates the convenient installation of the pressure transmitter on the pipeline connection. The operation steps are simple, making it convenient for the disassembly and assembly of the pressure transmitter and preventing damage to the pressure transmitter during installation.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a pressure transmitter.

[0017] Figure 2 This is a schematic diagram of the top structure of the pressure transmitter.

[0018] Figure 3 This is a schematic diagram of the installation structure of a pressure transmitter.

[0019] Figure 4 This is a schematic diagram of the buffer component.

[0020] Figure 5 This is a schematic diagram of the locking block.

[0021] In the figure: 1. Pressure transmitter body; 2. Buffer assembly; 201. Arc-shaped connecting plate; 202. Spring rod; 203. Arc-shaped pressure plate; 2031. Anti-slip part; 204. Hydraulic rod; 3. Pipe joint; 4. Pipe to be tested; 5. Connecting pipe; 501. Limiting slip ring; 6. Locking block; 601. Circular groove; 6011. Annular groove; 602. Threaded through hole. Detailed Implementation

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Please see Figure 1-5 This utility model provides a technical solution: a negative pressure measuring pressure transmitter, including a pressure transmitter body 1, a pipe to be measured 4, and a buffer assembly 2. The buffer assembly 2 has two components, each including an arc-shaped connecting plate 201 and an arc-shaped pressure plate 203. The top surface of the arc-shaped connecting plate 201 is connected to the bottom surface of the pressure transmitter body 1, and the bottom surface of the arc-shaped pressure plate 203 is in contact with the upper surface of the pipe to be measured 4. A spring rod 202 is provided at the bottom center of the arc-shaped connecting plate 201, and the bottom end of the spring rod 202 is connected to the top center of the arc-shaped pressure plate 203. Two hydraulic rods 204 are rotatably mounted at the bottom of the arc-shaped connecting plate 201. The bottom end of the hydraulic rod 204 is rotatably connected to the top surface of the arc-shaped pressure plate 203. The hydraulic rod 204 is symmetrically arranged between the arc-shaped connecting plate 201 and the arc-shaped pressure plate 203 with the spring rod 202 as the center. It can buffer and weaken the vibration of the pressure transmitter body 1 in the longitudinal direction, and further improve the stability of the pressure transmitter body 1. The bottom surface of the arc-shaped pressure plate 203 is provided with an anti-slip part 2031. The surface of the anti-slip part 2031 is in contact with the upper surface of the pipe 4 to be tested. The anti-slip part 2031 is a rubber protrusion, which can increase the friction between the arc-shaped pressure plate 203 and the pipe 4 to be tested, and ensure that the arc-shaped pressure plate 203 and the pipe 4 to be tested are stably attached.

[0024] In use, keep the pressure transmitter body 1 horizontal with the pipe 4 to be measured and align the pipe connector 3 with the threaded through hole 602 on the locking block 6. Then, move the pressure transmitter body 1 vertically downward. By rotating the locking block 6 clockwise, the pipe connector 3 is threaded into the threaded through hole 602. During the rotation of the locking block 6, the pipe connector 3 is screwed into the threaded through hole 602 and enters the connecting pipe 5 through the circular groove 601. This causes the pressure transmitter body 1 to move down the two buffer components 2 at its bottom, so that the bottom of the arc-shaped pressure plate 203 contacts and presses against the surface of the pipe 4 to be measured. The arc-shaped pressure plate 203 transmits the pressing force to the spring rod 202 and the two hydraulic rods 204. The spring rod 202 contracts under force, and the two hydraulic rods 204 rotate and retract under force. The rebound force generated by the contraction of the two spring rods 202 and the two hydraulic rods 204 are combined to create a force that compresses the pipe 4. The retraction of the two pairs of hydraulic rods 204 ensures that the two arc-shaped pressure plates 203 are tightly fitted to the surface of the pipe under test 4. After tightening the locking block 6, the pressure transmitter body 1 is stably installed. During the pressure monitoring of the pipe under test 4, when the pipe under test 4 experiences significant vibration, the vibration is transmitted to the pressure transmitter body 1 through the pipe joint 3 and the two buffer components 2. The vibration experienced by the pressure transmitter body 1 is effectively buffered and damped in the lateral direction by the contraction and rebound of the two spring rods 202. The longitudinal vibration is also offset by the rotation and retraction of the two pairs of hydraulic rods 204 on the two buffer components 2. The vibration experienced by the two buffer components 2 is weakened by their own spring rods 202 and the two hydraulic rods 204, thus achieving effective shock absorption and buffering of the pressure transmitter body 1.

[0025] A connecting pipe 5 is provided on the pipe to be tested 4, and the connecting pipe 5 communicates with the interior of the pipe to be tested 4. A limit slip ring 501 is provided at the top of the connecting pipe 5, and a locking block 6 is fitted on the top outer surface of the connecting pipe 5. A circular groove 601 is provided at the bottom of the locking block 6, and the circular groove 601 communicates with the interior of the connecting pipe 5. The top outer surface of the connecting pipe 5 mates with the circular groove 601. An annular groove 6011 is provided on the inner wall of the circular groove 601. The limit slip ring 501 mates with the annular groove 6011, which allows the locking block 6 to be rotated at the top of the connecting pipe 5. A threaded through hole 602 is provided at the top of the locking block 6, and the threaded through hole 602 communicates with the circular groove 601. A pipe connector 3 is provided at the bottom of the pressure transmitter body 1. The outer surface of the pipe connector 3 is threaded. The mating of the thread with the threaded through hole 602 allows for easy connection and separation of the pipe connector 3 and the locking block 6.

[0026] When the pressure transmitter body 1 needs to be disassembled and maintained, rotate the locking block 6 counterclockwise. Through the engagement of the limiting slip ring 501 and the annular groove 6011, the locking block 6 rotates at the top of the connecting pipe 5, thereby causing relative rotation between the locking block 6 and the pipe fitting 3. Through the engagement of the thread on the outer surface of the pipe fitting 3 with the threaded through hole 602, the pipe fitting 3 moves upward relative to the locking block 6 until the pipe fitting 3 slides completely out of the threaded through hole 602, thus disassembling the pressure transmitter body 1. Similarly, the pressure transmitter body 1 can be installed by following the reverse operation steps.

[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A negative pressure measuring pressure transmitter, comprising a pressure transmitter body (1) and a pipe to be measured (4), characterized in that: It also includes a buffer assembly (2), which has two components. The buffer assembly (2) includes an arc-shaped connecting plate (201) and an arc-shaped pressure plate (203). The top surface of the arc-shaped connecting plate (201) is connected to the bottom surface of the pressure transmitter body (1). The bottom surface of the arc-shaped pressure plate (203) is in contact with the upper surface of the pipe to be tested (4). A spring rod (202) is provided at the bottom center of the arc-shaped connecting plate (201). The bottom end of the spring rod (202) is connected to the top center of the arc-shaped pressure plate (203). A hydraulic rod (204) is rotatably installed at the bottom of the arc-shaped connecting plate (201). There are two hydraulic rods (204). The bottom end of the hydraulic rod (204) is rotatably connected to the top surface of the arc-shaped pressure plate (203).

2. The negative pressure measuring pressure transmitter according to claim 1, characterized in that, A connecting pipe (5) is provided on the pipe to be tested (4). The connecting pipe (5) is connected to the inside of the pipe to be tested (4). A limit slip ring (501) is provided at the top of the connecting pipe (5). A locking block (6) is fitted on the top outer surface of the connecting pipe (5).

3. A negative pressure measuring pressure transmitter according to claim 2, characterized in that, The bottom of the locking block (6) is provided with a circular groove (601), which is connected to the interior of the connecting pipe (5). The top outer surface of the connecting pipe (5) is engaged with the circular groove (601). The inner wall of the circular groove (601) is provided with an annular groove (6011), and the limiting slip ring (501) is engaged with the annular groove (6011).

4. A negative pressure measuring pressure transmitter according to claim 3, characterized in that, The top of the locking block (6) is provided with a threaded through hole (602), which is connected to the circular groove (601).

5. A negative pressure measuring pressure transmitter according to claim 4, characterized in that, The pressure transmitter body (1) is provided with a pipe joint (3) at the bottom. The outer surface of the pipe joint (3) is provided with a thread, which is engaged with the threaded through hole (602).

6. A negative pressure measuring pressure transmitter according to any one of claims 1-5, characterized in that, The bottom surface of the arc-shaped pressure plate (203) is provided with an anti-slip part (2031), the surface of the anti-slip part (2031) is in contact with the upper surface of the pipe (4) to be tested, and the anti-slip part (2031) is a rubber protrusion.

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