Corrosion resistant pressure transmitter

Abstract

The utility model discloses a kind of corrosion-resistant pressure transmitter, it relates to pressure transmitter technical field, including shell and detection component, the lower end of the shell is connected with sealing ring, the detection component is set to the inside of shell, and detection component includes lug, piston plate, fluorine rubber ring, ejector rod and pressure sensor, the inside of shell is placed with lug, and the top of lug is connected with piston plate.The corrosion-resistant pressure transmitter is set through the detection component, when installing pressure transmitter on the pipeline to be detected using joint, medium can flow to the inside lower end of shell, titanium alloy material piston plate and fluorine rubber ring are used at this time, pressure sensor and medium are isolated, avoid medium directly corroding pressure sensor, while medium can be forced to pressure sensor by piston plate and ejector rod, and then detect pressure, while piston plate and fluorine rubber ring have stronger corrosion resistance, which is conducive to improving the service life of equipment.

Description

Technical Field

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

[0002] A pressure transmitter is a device that converts pressure into pneumatic or electric signals for control and remote transmission. It can convert the physical pressure parameters of gas, liquid, etc. sensed by the pressure sensing element sensor into standard electrical signals to supply secondary instruments such as indicators, alarms, recorders, and regulators for measurement, indication, and process regulation.

[0003] Existing pressure transmitters, when detecting the pressure of a medium, have their sensing heads in direct contact with the medium. This can easily lead to a reduction in service life due to corrosion when detecting highly corrosive media over a long period of time. Utility Model Content

[0004] The purpose of this invention is to provide a corrosion-resistant pressure transmitter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant pressure transmitter, comprising a housing and a detection assembly, wherein a sealing ring is connected to the lower end of the housing, the detection assembly is disposed inside the housing, and the detection assembly includes a protrusion, a piston plate, a fluororubber ring, a push rod, and a pressure sensor, wherein a protrusion is disposed on the inner side of the housing, and a piston plate is connected to the top of the protrusion, a fluororubber ring is fitted on the outer side of the piston plate, and a push rod is fixed to the top of the piston plate, and a pressure sensor is connected to the top of the push rod.

[0006] Furthermore, the fluororubber ring abuts against the housing, and the fluororubber rings are distributed in an equidistant array along the outer circumferential surface of the piston plate.

[0007] Furthermore, the pressure sensor is fixedly connected to the housing, and the housing is slidably connected to the piston plate.

[0008] Furthermore, the lower end of the housing is threaded with a connector, and the lower outer circumferential surface of the connector is threaded.

[0009] Furthermore, the connector is internally provided with a filter assembly, which includes a top ring and a filter cylinder. The top ring is rotatably connected to the inside of the connector, and the filter cylinder is fixed to the bottom of the top ring.

[0010] Furthermore, the filter assembly also includes filter holes and guide vanes. Filter holes are provided on the outer side of the filter cylinder, and guide vanes are fixed on the outer side of the filter cylinder.

[0011] Furthermore, the outer diameter of the filter cylinder is equal to the inner diameter of the lower end of the connector, and the filter holes are distributed in a circular array along the outer circumferential surface of the filter cylinder.

[0012] Furthermore, the cross-section of the guide vane is arc-shaped, and the guide vanes are equidistantly distributed circumferentially about the outer side of the filter cylinder.

[0013] This utility model provides a corrosion-resistant pressure transmitter, which has the following advantages:

[0014] 1. By setting up the detection component, when the pressure transmitter is installed on the pipeline to be detected using the connector, the medium can flow to the lower end of the housing. At this time, the piston plate and fluororubber ring made of titanium alloy are used to isolate the pressure sensor from the medium, so as to avoid the medium directly corroding the pressure sensor. At the same time, the medium can apply force to the pressure sensor through the piston plate and the push rod, thereby detecting the pressure. In addition, the piston plate and fluororubber ring have strong corrosion resistance, which helps to improve the service life of the equipment.

[0015] 2. This utility model, through the setting of the filter component, can use the filter holes on the filter cylinder to filter larger impurity particles in the medium, avoiding excessive accumulation of impurity particles at the lower end of the shell, which would affect the detection accuracy. At the same time, when the medium flows inside the pipe at the installation location, it can also apply force to the guide plate. The guide plate has a certain curvature, which will cause uneven force on both sides, thus driving the filter cylinder to rotate. As the medium flows on the outside of the filter cylinder, it can also carry away some impurities, thereby reducing the possibility of the filter cylinder becoming clogged. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a corrosion-resistant pressure transmitter according to the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the detection component of a corrosion-resistant pressure transmitter according to the present invention;

[0018] Figure 3 This is a three-dimensional structural diagram of the filter assembly of a corrosion-resistant pressure transmitter according to the present invention.

[0019] In the diagram: 1. Housing; 2. Sealing ring; 3. Connector; 4. Detection assembly; 401. Protrusion; 402. Piston plate; 403. Fluororubber ring; 404. Top rod; 405. Pressure sensor; 5. Filter assembly; 501. Top ring; 502. Filter cylinder; 503. Filter holes; 504. Guide plate. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] like Figure 1 and Figure 2 As shown, a corrosion-resistant pressure transmitter includes a housing 1 and a detection component 4. A sealing ring 2 is connected to the lower end of the housing 1, and a connector 3 is threaded to the lower end of the housing 1. The outer circumferential surface of the lower end of the connector 3 is threaded for easy connection and installation with a pipeline structure. The detection component 4 is disposed inside the housing 1 and includes a protrusion 401, a piston plate 402, a fluororubber ring 403, a push rod 404, and a pressure sensor 405. The protrusion 401 is disposed on the inner side of the housing 1, and the piston plate 402 is connected to the top of the protrusion 401. When the piston plate 402 moves downward and resets under gravity, the protrusion 401 can limit its movement. The fluororubber ring 403 is embedded on the outer side of the piston plate 402, and the top of the piston plate 402 is fixed. A top rod 404 is fixed, and a pressure sensor 405 is connected to the top of the top rod 404. A fluororubber ring 403 abuts against the housing 1, and the fluororubber ring 403 is distributed in an equidistant array along the outer circumferential surface of the piston plate 402. The piston plate 402 and the fluororubber ring 403, made of titanium alloy, isolate the pressure sensor 405 from the medium, preventing the medium from directly corroding the pressure sensor 405. At the same time, both the piston plate 402 and the fluororubber ring 403 have strong corrosion resistance, which helps to improve the service life of the equipment. The pressure sensor 405 is fixedly connected to the housing 1, and the housing 1 is slidably connected to the piston plate 402. The medium can apply force to the pressure sensor 405 through the piston plate 402 and the top rod 404, thereby detecting the pressure.

[0022] like Figure 1 and Figure 3 As shown, a filter assembly 5 is provided inside the connector 3, and the filter assembly 5 includes a top ring 501 and a filter cylinder 502. The top ring 501 is rotatably connected inside the connector 3, and the filter cylinder 502 is fixed to the bottom of the top ring 501. The filter assembly 5 also includes filter holes 503 and guide vanes 504. Filter holes 503 are opened on the outer side of the filter cylinder 502, and guide vanes 504 are fixed on the outer side of the filter cylinder 502. The outer diameter of the filter cylinder 502 is equal to the inner diameter of the lower end of the connector 3, and the filter holes 503 are distributed in a circumferential array along the outer circumferential surface of the filter cylinder 502. The filter holes 503 on the filter cylinder 502 are used to filter the filter cylinder 502. 03 is used to filter larger impurity particles in the medium, preventing excessive accumulation of impurity particles at the lower end of the shell 1, which would affect the detection accuracy. The cross-section of the guide plate 504 is arc-shaped, and the guide plate 504 is equidistantly distributed circumferentially on the outer side of the filter cylinder 502. When the medium flows in the pipe to be tested, it can also exert force on the guide plate 504. At the same time, the guide plate 504 has a certain curvature, which will cause uneven force on both sides, thus driving the filter cylinder 502 to rotate. As the medium flows on the outer side of the filter cylinder 502, it can also carry away some impurities, preventing continuous accumulation.

[0023] In summary, when using this corrosion-resistant pressure transmitter, firstly according to... Figure 1, Figure 2 and Figure 3 The structure shown first involves installing the pressure transmitter onto the pipeline to be tested using connector 3 and a sealing gasket. Then, when the medium flows to the pressure transmitter, larger impurities in the medium are filtered out using filter holes 503 on the filter cartridge 502. The medium can then flow to the lower interior of the housing 1. At this point, the sealing ring 2 seals the space between the housing 1 and connector 3. Furthermore, the titanium alloy piston plate 402 and fluororubber ring 403 isolate the pressure sensor 405 from the medium, preventing direct corrosion of the pressure sensor 405. Finally, the medium can pass through the piston plate 402 and the push rod 40... 4. Force is applied to the pressure sensor 405 to detect the pressure (the pressure sensor 405 is model ZCB513DA; since the pressure sensor 405 is a commonly used sensor, its specific structure will not be described in detail). Finally, when the medium flows inside the pipe at the installation location, force is also applied to the guide vane 504. At the same time, the guide vane 504 has a certain curvature, which will cause uneven force on both sides, thus driving the filter cartridge 502 to rotate. As the medium flows outside the filter cartridge 502, it can also carry away some impurities, thereby reducing the clogging of the filter cartridge 502.

[0024] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A corrosion-resistant pressure transmitter, comprising a housing (1) and a sensing assembly (4), characterized in that, A sealing ring (2) is connected to the lower end of the housing (1). The detection component (4) is disposed inside the housing (1). The detection component (4) includes a protrusion (401), a piston plate (402), a fluororubber ring (403), a push rod (404), and a pressure sensor (405). A protrusion (401) is disposed on the inner side of the housing (1). A piston plate (402) is connected to the top of the protrusion (401). A fluororubber ring (403) is fitted on the outer side of the piston plate (402). A push rod (404) is fixed to the top of the piston plate (402). A pressure sensor (405) is connected to the top of the push rod (404).

2. The corrosion-resistant pressure transmitter according to claim 1, characterized in that, The fluororubber ring (403) abuts against the shell (1), and the fluororubber ring (403) is distributed in an equidistant array along the outer circumferential surface of the piston plate (402).

3. The corrosion-resistant pressure transmitter according to claim 1, characterized in that, The pressure sensor (405) is fixedly connected to the housing (1), and the housing (1) is slidably connected to the piston plate (402).

4. A corrosion-resistant pressure transmitter according to claim 1, characterized in that, The lower end of the housing (1) is threaded with a connector (3), and the lower outer circumferential surface of the connector (3) is threaded.

5. A corrosion-resistant pressure transmitter according to claim 4, characterized in that, The connector (3) is provided with a filter assembly (5), which includes a top ring (501) and a filter cylinder (502). The top ring (501) is rotatably connected inside the connector (3), and the filter cylinder (502) is fixed at the bottom of the top ring (501).

6. A corrosion-resistant pressure transmitter according to claim 5, characterized in that, The filter assembly (5) further includes filter holes (503) and guide vanes (504). The filter cylinder (502) has filter holes (503) on its outer side and guide vanes (504) are fixed on its outer side.

7. A corrosion-resistant pressure transmitter according to claim 6, characterized in that, The outer diameter of the filter cylinder (502) is equal to the inner diameter of the lower end of the connector (3), and the filter holes (503) are distributed in a circular array along the outer circumferential surface of the filter cylinder (502).

8. A corrosion-resistant pressure transmitter according to claim 6, characterized in that, The cross-section of the guide vane (504) is arc-shaped, and the guide vane (504) is equidistantly distributed around the outer side of the filter cylinder (502).

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