A pipeline pressure monitoring apparatus

Abstract

The utility model relates to pressure monitoring technical field especially relates to a pipeline pressure monitoring device, including setting on the gas pipeline pressure transmitter, one place intercommunication of gas pipeline is provided with pressure tapping, be provided with the monitoring part of the pressure transmitter that inserts into pressure tapping, the monitoring part includes the fixed ring, the pressure detection head of coaxial in fixed ring, filter mechanism, including the mounting round block, the filter screen of being located on mounting round block, the installation and disassembly subassembly. The utility model discloses, because of the setting of filter mechanism, can carry out effective filtration to the small particulate matter, rust and other impurities existing in gas pipeline, avoided under the drive of high -speed fluid, the direct impact of impurities to pressure detection head, has guaranteed its leakproofness and performance, still through the installation and disassembly subassembly that sets up, can fix pressure transmitter at pressure tapping, and avoid vibration and lead to thread connection loose, reduced the risk of leakage.

Description

Technical Field

[0001] This utility model relates to the field of pressure monitoring technology, and in particular to a pipeline pressure monitoring device. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] A pressure transmitter is a device that converts pressure into pneumatic or electrical signals for control and remote transmission. It transforms the physical pressure parameters of gases, liquids, etc., sensed by pressure sensors into standard electrical signals, which are then supplied to secondary instruments such as indicators, alarms, recorders, and controllers for measurement, indication, and process regulation.

[0004] Currently, it is used to monitor fluid pressure in gas pipelines. However, there are impurities such as tiny particles and rust in the pipelines. Under the influence of high-speed fluid, these impurities will directly impact the transmitter's isolation diaphragm. Over time, this will cause erosion and wear on the diaphragm surface, affecting its sealing performance. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned shortcomings by providing a pipeline pressure monitoring device.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a pipeline pressure monitoring device, including a pressure transmitter installed on a gas pipeline, a pressure tapping port connected to a location on the gas pipeline, a monitoring part extending into the pressure tapping port on the pressure transmitter, the monitoring part including a fixing ring installed on the pressure transmitter at the end corresponding to the pressure tapping port, and a pressure detection head coaxially installed in the fixing ring for detection; The filtration mechanism includes a mounting block detachably disposed on the inner wall of the fixed ring and used for the pressure detection head to pass through, and a filter screen disposed on the mounting block and used to prevent impurities from impacting the pressure detection head; An installation / removal assembly, located outside the retaining ring, is used to generate radial pressure to lock the pressure transmitter inside the pressure tap.

[0007] Furthermore, a filter plate is provided on the filter screen facing the flow direction in the gas pipeline. The filter plate is higher on one side of the central axis of the monitoring unit and lower on the other side of the central axis of the monitoring unit. The filter plates are distributed obliquely.

[0008] Furthermore, the outer wall of the mounting block is symmetrically provided with two vertical grooves, the top of the vertical grooves is provided with an opening, and the bottom of the vertical grooves is connected to a horizontal groove opened along the circumference of the mounting block. The vertical grooves and the horizontal grooves are combined on the outer wall of the mounting block to form an L-shaped groove. The inner wall of the fixing ring is provided with two limiting blocks that are respectively adapted to and connected to the L-shaped groove. The mounting block is moved closer to the fixing ring, and the limiting block is inserted from the opening and moved along the vertical groove to the end communicating with the horizontal groove and rotated along the horizontal groove, thereby driving the mounting block to be limited and installed in the fixing ring.

[0009] Furthermore, a limiting arc rod is provided in the transverse groove along its arc length direction, and the end face of the limiting block is provided with a limiting hole for the limiting arc rod to pass through.

[0010] Furthermore, the installation and removal assembly includes an external threaded connecting block located on the end face of the monitoring section on the pressure transmitter, and an internal threaded connecting groove located inside the pressure tap and adapted to be rotated and connected to the external threaded connecting block.

[0011] Furthermore, the external threaded connecting block is evenly provided with multiple slots, and the external threaded connecting block is divided into multiple arc plates by the multiple slots. The internal threaded connecting groove is provided with a groove that is larger at the top and smaller at the bottom. When the pressure transmitter rotates and moves downward within the pressure tap, the multiple arc plates converge toward the center under the pressure of the internal threaded connecting groove, and are subjected to radial pressure.

[0012] The beneficial effects of this utility model are reflected in: This invention, due to the filter mechanism, can effectively filter out small particles, rust, and other impurities in the gas pipeline, avoiding direct impact of impurities on the pressure detection head under the influence of high-speed fluid, thus ensuring its sealing and performance. Furthermore, the installation and removal components can fix the pressure transmitter at the pressure tapping port and prevent vibration from causing the threaded connection to loosen, reducing the risk of leakage. Attached Figure Description

[0013] Figure 1 This is a perspective view of the overall structure of an embodiment of the present utility model. Figure 2 This is a three-dimensional structural view of an embodiment of the present invention from an exploded perspective; Figure 3 This is a three-dimensional structural view of an embodiment of the present invention from another exploded perspective; Figure 4 This is a schematic diagram of the connection structure of the mounting block on the fixing ring in one embodiment of the present invention.

[0014] In the picture: 1. Pressure transmitter; 2. Pressure tap; 3. Monitoring unit; 31. Fixing ring; 32. Pressure detection head; 4. Filtering mechanism; 41. Mounting block; 411. Vertical groove; 412. Horizontal groove; 413. Limiting arc rod; 42. Filter screen; 421. Filter plate; 5. Installation and removal assembly; 51. External threaded connecting block; 511. Arc plate; 52. Internal threaded connecting groove; 53. Groove; 6. Limiting block; 61. Limiting hole. Detailed Implementation

[0015] 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 a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. 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 scope of protection of the present utility model.

[0016] Please see Figure 1-4 This utility model discloses a pipeline pressure monitoring device, including a pressure transmitter 1 installed on a gas pipeline, a pressure tap 2 connected to a point on the gas pipeline, a monitoring part 3 extending into the pressure tap 2 on the pressure transmitter 1, and the monitoring part 3 including a fixing ring 31 installed on the pressure transmitter 1 at the end corresponding to the pressure tap 2, and a pressure detection head 32 coaxially installed in the fixing ring 31 for detection. The filtration mechanism 4 includes a mounting block 41 detachably disposed on the inner wall of the fixing ring 31 and used for the pressure detection head 32 to pass through, and a filter screen 42 disposed on the mounting block 41 and used to prevent impurities from impacting the pressure detection head 32. The mounting and dismounting assembly 5 is located outside the retaining ring 31 and is used to generate radial pressure to lock the pressure transmitter 1 inside the pressure tapping port 2.

[0017] In practice, by using the pressure transmitter 1 assembled with the installation and removal assembly 5 at a pressure tap 2 welded in a slot on the gas pipeline, the pressure transmitter 1 can be fixed at the pressure tap 2, and vibration can be avoided to prevent the threaded connection from loosening, thus reducing the risk of leakage. Furthermore, the mounting block 41, which can be detachably installed at the monitoring unit 3, and the filter screen 42 installed on the mounting block 41, can effectively filter out small particles, rust, and other impurities in the gas pipeline, avoiding direct impact of impurities on the pressure detection head 32 under the influence of high-speed fluid, thus ensuring its sealing and performance.

[0018] It should be noted that the pressure detection head 32 consists of an isolation diaphragm, a filling fluid, and a sensitive element; The diaphragm is a thin metal sheet that comes into direct contact with the measured medium. It senses pressure and transmits it through the filling fluid. The material is typically 316L stainless steel, Hastelloy C-276, etc., for corrosion resistance. The filling fluid is a stable silicone oil or fluorinated oil used to transmit pressure from the diaphragm to the internal sensitive element without damage; The sensing element is the component that performs the measurement.

[0019] In one embodiment, a filter plate 421 is disposed on the filter screen 42 facing the flow direction within the gas pipeline. The filter plate 421 is higher on one side of the central axis of the monitoring unit 3 and lower on the other side of the central axis of the monitoring unit 3, and the filter plate 421 is obliquely distributed. This design, with the filter plate 421 integrally formed on the filter screen 42 facing the fluid flow direction and distributed obliquely, ensures that when the fluid impacts the filter screen 42, it can filter out small particles, rust, and other impurities present in the gas pipeline, reducing the direct impact of impurities on the isolation diaphragm. Furthermore, impurities impacting the outer surface of the filter screen 42 will not accumulate due to the oblique surface, reducing the frequency of cleaning impurities on the filter screen 42 surface, thus helping to extend its service life and ensure its effectiveness.

[0020] In one embodiment, the outer wall of the mounting block 41 is symmetrically provided with two vertical grooves 411, the top of the vertical grooves 411 is provided with an opening, and the bottom of the vertical grooves 411 is connected to a horizontal groove 412 that is opened along the circumference of the mounting block 41. The vertical grooves 411 and the horizontal grooves 412 are combined on the outer wall of the mounting block 41 to form an L-shaped groove. The inner wall of the fixing ring 31 is provided with two limiting blocks 6 that are respectively adapted to and connected to the L-shaped groove. The mounting block 41 is moved closer to the fixing ring 31. The limiting block 6 is inserted from the opening and moves along the vertical groove 411 to the end communicating with the horizontal groove 412, and rotates along the horizontal groove 412, thereby driving the mounting block 41 to be limited and installed inside the fixing ring 31. With this design, by symmetrically machining two vertical grooves 411 on the outer wall of the mounting block 41 and a horizontal groove 412 communicating with the bottom of the vertical grooves 411, when the mounting block 41 is moved towards the inner groove of the fixing ring 31, the opening machined at the top of the vertical groove 411 will pass through the limiting block 6. Under the action of rotating the mounting block 41, the limiting block 6 moves along its arc length direction within the horizontal groove 412 to be limited, thus achieving convenient installation of the mounting block 41 inside the fixing ring 31.

[0021] In one embodiment, a limiting arc rod 413 is provided within the transverse groove 412 along its arc length direction, and the end face of the limiting block 6 is provided with a limiting hole 61 for the limiting arc rod 413 to pass through. With this design, by welding the limiting arc rod 413 inside the transverse groove 412 along its arc length direction, when the operating limiting block 6 moves along the arc length direction of the inner groove of the transverse groove 412 to the limiting end of the inner groove of the transverse groove 412, the limiting hole 61 through the end face of the limiting block 6 will pass through and be fixedly connected with the limiting arc rod 413, further defining and combining the fixing ring 31 and the mounting block 41.

[0022] In one embodiment, the installation / removal assembly 5 includes an externally threaded connecting block 51 disposed on the end face of the monitoring section 3 on the pressure transmitter 1, and an internally threaded connecting groove 52 disposed within the pressure tapping port 2 and adapted to be rotatably connected to the externally threaded connecting block 51. This design, using the externally threaded connecting block 51 and the internally threaded connecting groove 52, allows the pressure transmitter 1 to be fixed at the pressure tapping port 2 via a threaded connection, simplifying operation.

[0023] In one embodiment, the external threaded connecting block 51 is uniformly provided with a plurality of grooves 53, and the external threaded connecting block 51 is divided into a plurality of arc plates 511 by the plurality of grooves 53. The internal threaded connecting groove 52 is provided with a groove that is larger at the top and smaller at the bottom. When the pressure transmitter 1 rotates and moves downward within the pressure tap 2, the multiple arc plates 511 converge towards the center under the pressure of the internal threaded connecting groove 52, experiencing radial pressure. This design, achieved by machining multiple evenly distributed grooves 53 on the external threaded connecting block 51, and the internal threaded connecting groove 52 having a wider top and narrower bottom, causes the arc plates 511, evenly divided by the multiple grooves 53, to converge towards the center under the pressure of the internal threaded connecting groove 52 when the pressure transmitter 1 rotates within the pressure tap 2. The elastic deformation of the internal threaded connecting groove 52 itself generates radial pressure on the external threaded connecting block 51, achieving frictional locking and preventing loosening of the threaded connection due to vibration.

[0024] The electrical components described in this article are controlled automatically by a controller. The controller circuit can be implemented by a person skilled in the art through simple programming. The power supply is also common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] Additionally, "multiple" refers to two or more.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipeline pressure monitoring device, comprising a pressure transmitter (1) installed on a gas pipeline, wherein a pressure tap (2) is connected to a location on the gas pipeline, and a monitoring part (3) extending into the pressure tap (2) is provided on the pressure transmitter (1), characterized in that: The monitoring unit (3) includes a fixing ring (31) disposed on the pressure transmitter (1) at the end of the corresponding pressure tap (2) and a pressure detection head (32) coaxially disposed in the fixing ring (31) for detection. The filtration mechanism (4) includes a mounting block (41) detachably disposed on the inner wall of the fixing ring (31) and used for the pressure detection head (32) to pass through, and a filter screen (42) disposed on the mounting block (41) and used to prevent impurities from impacting the pressure detection head (32). The mounting and dismounting assembly (5) is located outside the retaining ring (31) and is used to generate radial pressure to lock the pressure transmitter (1) inside the pressure tap (2).

2. The pipeline pressure monitoring device according to claim 1, characterized in that: The filter screen (42) is provided with a filter plate (421) facing the flow direction in the gas pipeline. The filter plate (421) is higher on one side of the central axis of the monitoring unit (3) and lower on the other side of the central axis of the monitoring unit (3). The filter plate (421) is obliquely distributed.

3. The pipeline pressure monitoring device according to claim 1, characterized in that: The outer wall of the mounting block (41) is symmetrically provided with two vertical grooves (411). The top of the vertical groove (411) is provided with an opening. The bottom of the vertical groove (411) is connected to a horizontal groove (412) opened along the circumference of the mounting block (41). The vertical groove (411) and the horizontal groove (412) are combined on the outer wall of the mounting block (41) to form an L-shaped groove. The inner wall of the fixing ring (31) is provided with two limiting blocks (6) that are respectively adapted to and connected to the L-shaped groove. Move the mounting block (41) closer to the fixing ring (31), and the limiting block (6) is inserted from the opening and moves along the vertical groove (411) to the end communicating with the horizontal groove (412) and rotates along the horizontal groove (412), thereby driving the mounting block (41) to be limited and installed in the fixing ring (31).

4. The pipeline pressure monitoring device according to claim 3, characterized in that: A limiting arc rod (413) is provided in the transverse groove (412) along its arc length direction, and a limiting hole (61) is provided on the end face of the limiting block (6) for the limiting arc rod (413) to pass through.

5. The pipeline pressure monitoring device according to claim 1, characterized in that: The installation and removal assembly (5) includes an external threaded connecting block (51) located on the end face of the monitoring part (3) on the pressure transmitter (1) and an internal threaded connecting groove (52) located in the pressure tap (2) and adapted to rotate and connect with the external threaded connecting block (51).

6. The pipeline pressure monitoring device according to claim 5, characterized in that: The external threaded connecting block (51) is uniformly provided with multiple slots (53), and the external threaded connecting block (51) is divided into multiple arc plates (511) by the multiple slots (53). The internal threaded connecting groove (52) is provided with a groove that is larger at the top and smaller at the bottom. When the pressure transmitter (1) rotates and moves downward within the pressure tap (2), the multiple arc plates (511) are squeezed towards the center by the internal threaded connecting groove (52) and subjected to radial pressure.

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