CN212807431U - Plane front end sealing pressure transmitter - Google Patents
Plane front end sealing pressure transmitter Download PDFInfo
- Publication number
- CN212807431U CN212807431U CN202022133911.5U CN202022133911U CN212807431U CN 212807431 U CN212807431 U CN 212807431U CN 202022133911 U CN202022133911 U CN 202022133911U CN 212807431 U CN212807431 U CN 212807431U
- Authority
- CN
- China
- Prior art keywords
- pressure sensing
- sensing core
- pressure
- core body
- pressure transmitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model provides a plane front end sealing pressure transmitter, including the pressure sensing core of cylindrical structure, pressure sensing core first terminal surface is provided with the pressure sensing diaphragm, and pressure sensing core second end is connected with threaded connection spare one end, and the threaded connection spare other end connects the barrel, and the one end that the pressure sensing core is close to the pressure sensing diaphragm encircles the pressure sensing core indent and forms annular groove, installs O type sealing washer in the annular groove, and the one end that the pressure sensing core is close to the threaded connection spare encircles the pressure sensing core protrusion and forms the butt joint screw thread; the force sensing chip and the transmitter circuit board which are connected with the pressure sensing core body are arranged inside the threaded connecting piece and the barrel body, one end, deviating from the pressure sensing membrane, of the transmitter circuit board is connected with a cable, the second end of the pressure sensing core body is further connected with a vent pipe, and the cable and the vent pipe extend along the direction far away from the pressure sensing membrane and are connected with an electrical plug. The utility model has the advantages of excellent cleaning grade, good sealing performance, corrosion resistance and long service life.
Description
Technical Field
The utility model belongs to the technical field of pressure transmitter, specifically a plane front end sealing pressure transmitter.
Background
The pressure transmitter is a device which receives pressure parameter changes and converts the pressure parameter changes into electrical signals to control at the same time, is widely applied to various industrial automatic control environments, relates to the industries of energy power, railway traffic, intelligent manufacturing, oil wells, ships and the like, and generally adopts the working principle that physical pressure parameter changes of gas, liquid and the like are converted into standard electrical signals through a load cell sensor, such as the liquid level, the density and the pressure of liquid, gas or steam are measured, and the standard electrical signals are conveniently provided for secondary instruments such as an alarm instrument, a recorder, a PLC and the like to display, indicate and adjust. When the existing pressure transmitter is used for measuring the liquid pressure, the time that a pressure measuring part is immersed in liquid is long, dirt accumulation easily occurs in a thread gap, so that a measured medium is polluted, a pressure measuring diaphragm is soaked in alkaline liquid for a long time, salt corrosion and blockage of the pressure measuring diaphragm are easily caused, and the measuring precision and the service life of the pressure transmitter are greatly influenced.
Therefore, it is necessary to provide a flat front-end sealing pressure transmitter, which effectively seals the front end of the screw thread through an O-ring, and solves the problems that the dirt in the screw thread clearance of the existing pressure transmitter easily pollutes the measured medium and the service life is short.
SUMMERY OF THE UTILITY MODEL
In view of the problem that the background art provided, the utility model aims at providing a plane front end seal pressure transmitter aims at solving current pressure transmitter thread clearance dirt and pollutes the problem that measured medium, life-span are shorter easily.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a plane front end sealing pressure transmitter comprises a pressure sensing core body, wherein the pressure sensing core body is of a cylindrical structure, a pressure sensing membrane is arranged on a first end face of the pressure sensing core body, a second end of the pressure sensing core body is connected with one end of a threaded connecting piece, the other end of the threaded connecting piece is connected with a cylinder body, one end, close to the pressure sensing membrane, of the pressure sensing core body surrounds the pressure sensing core body to be concave inwards to form an annular groove, an O-shaped sealing ring is installed in the annular groove, and one end, close to the threaded connecting piece, of the pressure sensing core body surrounds the pressure sensing core body to be convex to form butt threads; threaded connection spare and the barrel is inside be provided with the quick chip of power and the changer circuit board that the pressure sensing core body is connected, the changer circuit board deviates from the one end of pressure sensing diaphragm is connected with the cable conductor, pressure sensing core body second end still is connected with the breather pipe, the cable conductor with the breather pipe is along keeping away from the direction of pressure sensing diaphragm extends and is connected with electrical plug.
Preferably, the outer diameter of the pressure sensing core body is 18-20mm, the outer diameter of the O-shaped sealing ring is 0.5-1mm larger than the outer diameter of the pressure sensing core body, and the butt joint threads are G1/2-G1 threads.
Preferably, the end face of the electrical plug, which is far away from the barrel, is provided with a wiring hole and a concave through hole, the cable is correspondingly connected with the wiring hole, and the vent pipe penetrates through the concave through hole.
Preferably, the butt joint screw thread with install ED type sealing washer between the threaded connection spare, O type sealing washer with ED type sealing washer all adopts the EPT rubber material, the pressure sensing core body threaded connection spare and barrel all adopt 316L stainless steel.
Preferably, the cable conductor is made of polytetrafluoroethylene.
Preferably, the electrical plug is a waterproof electrical plug.
Preferably, the applicable pressure of the planar front end sealing pressure transmitter is at most 10 MPa.
Preferably, the integral protection grade of the plane front end sealing pressure transmitter is not lower than IP 67.
The beneficial effects of the utility model mainly include: the pressure measurement position corresponds and is provided with the mounting groove, and the mounting groove inner wall is provided with the screw thread, will sense the pressure core and stretch into the mounting groove and will dock screw thread and mounting groove screw thread and correspond the installation during installation, and simultaneously, O type sealing washer butt mounting groove prevents to measure the medium and gets into the screw thread position, guarantees the leakproofness of plane front end sealing pressure transmitter. In addition, the flush pressure sensing diaphragm is directly contacted with the measuring medium for pressure sensing, so that the accumulation of dirt of the measuring medium at the position of the pressure sensing diaphragm is reduced, the phenomenon that the whole measuring medium is polluted due to the fact that part of the measuring medium flows back after being polluted by the dirt at the threaded part is avoided, the cleaning grade is improved, the pressure sensing diaphragm is prevented from being blocked due to the accumulation of the dirt of impurities, the measuring precision of the plane front end sealing pressure transmitter is greatly improved, and the service life of the pressure sensing diaphragm is prolonged. The vent pipe connected with the pressure sensing core body and the cable penetrate through the threaded connecting piece and the cylinder body together and finally extend to be connected with the electrical plug, so that on one hand, the other end of the pressure sensing diaphragm for measuring the medium pressure is connected with the atmospheric pressure, and the relative stability and accuracy of a measuring result are ensured; on the other hand, the vent pipe is used for prolonging the pipeline of the shell connected with the atmospheric pressure, so that the damage of components caused by the entry of water or vapor when the shell is immersed in liquid for measurement is avoided, and the protection grade of the front-end sealing pressure transmitter of the plane is further improved.
Drawings
Fig. 1 is a schematic cross-sectional structural diagram of a planar front-end sealing pressure transmitter according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a planar front-end sealed pressure transmitter according to an embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Pressure sensing |
16 | |
| 11 | Pressure- |
17 | Electrical plug |
| 12 | O- |
171 | |
| 13 | |
172 | Concave through |
| 14 | ED |
20 | Threaded |
| 15 | |
30 | Barrel body |
Detailed Description
The present invention will be further described with reference to the accompanying drawings so as to facilitate the understanding of the present invention by those skilled in the art.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The present invention is described in the directions of "up", "down", "front", "back", "left", "right", etc. with reference to the directions shown in fig. 1 and 2, and is only used to explain the relative positional relationship between the components in the postures shown in fig. 1 and 2, and if the specific posture is changed, the directional indication is correspondingly changed accordingly.
The utility model provides a plane front end sealing pressure transmitter, as shown in fig. 1 and fig. 2, plane front end sealing pressure transmitter includes pressure sensing core 10, pressure sensing core 10 is cylindrical structure, pressure sensing core 10 first terminal surface is provided with pressure sensing diaphragm 11, pressure sensing core 10 second end is connected with threaded connection 20 one end, the barrel 30 is connected to the threaded connection 20 other end, the one end that pressure sensing core 10 is close to pressure sensing diaphragm 11 encircles pressure sensing core 10 indent and forms annular groove, install O type sealing washer 12 in the annular groove, the one end that pressure sensing core 10 is close to threaded connection 20 encircles pressure sensing core 10 protrusion and forms butt joint screw 13; the force sensing chip and the transmitter circuit board which are connected with the pressure sensing core body 10 are arranged inside the threaded connection part 20 and the cylinder body 30, one end of the transmitter circuit board, which is far away from the pressure sensing membrane 11, is connected with the cable 15, the second end of the pressure sensing core body 10 is also connected with the vent pipe 16, and the cable 15 and the vent pipe 16 extend along the direction far away from the pressure sensing membrane 11 and are connected with the electrical plug 17.
Specifically, as shown in fig. 1 and fig. 2, pressure sensing diaphragm 11 is arranged on the top of the upper portion of pressure sensing core 10, O-shaped sealing ring 12 and butt thread 13 are arranged below pressure sensing diaphragm 11 in sequence, a pressure measurement portion is correspondingly provided with a mounting groove, the inner wall of the mounting groove is provided with threads, pressure sensing core 10 is inserted into the mounting groove and butt thread 13 and mounting groove threads are correspondingly mounted during mounting, and meanwhile, O-shaped sealing ring 12 abuts against the mounting groove to prevent a measurement medium from entering the thread portion, so that the sealing performance of the planar front end sealing pressure transmitter is ensured. In addition, flush pressure sensing diaphragm 11 and direct and the measuring medium contact pressure sensing, reduce the dirt of measuring the medium and in pressure sensing diaphragm 11 accumulation, also avoid partial measuring medium to cause whole measuring mediums to be polluted by the dirt backward flow after the screw thread position is polluted by the dirt, improve clean grade, avoid impurity dirt accumulation to lead to pressure sensing diaphragm 11 to block up, greatly improved plane front end seal pressure transmitter's measurement accuracy, prolonged its life.
Further, the vent pipe 16 connected with the pressure sensing core 10 and the cable 15 pass through the threaded connector 20 and the cylinder 30 together and finally extend to be connected with the electrical plug 17, so that on one hand, the other end of the pressure sensing diaphragm 11 for measuring the medium pressure is connected with the atmospheric pressure, and the relative stability and accuracy of the measurement result are ensured; on the other hand, the vent pipe 16 is used for prolonging the pipeline of the shell connected with the atmospheric pressure, so that the damage of components caused by the entry of water or vapor when the shell is immersed in liquid for measurement is avoided, and the protection grade of the front-end sealing pressure transmitter of the plane is improved.
Furthermore, the outer diameter of the pressure sensing core body 10 is 18-20mm, the outer diameter of the O-shaped sealing ring 12 is 0.5-1mm larger than the outer diameter of the pressure sensing core body 10, and the butt joint thread 13 is a G1/2-G1 thread. The end face of the electric plug 17 far away from the cylinder 30 is provided with a wiring hole 171 and a concave through hole 172, the cable 15 is correspondingly connected with the wiring hole 171, and the vent pipe 16 penetrates through the concave through hole 172. An ED-type sealing ring 14 is arranged between the butt joint thread 13 and the thread connecting piece 20, the O-type sealing ring 12 and the ED-type sealing ring 14 are made of ethylene propylene diene monomer, and the pressure sensing core body 10, the thread connecting piece 20 and the cylinder body 30 are made of 316L stainless steel.
Specifically, in this embodiment, the outer diameter of the pressure sensing core 10 is 18mm, the outer diameter of the O-shaped sealing ring 12 is 18.5mm, the butt joint thread 13 adopts a G1/2 thread, the ED-shaped sealing ring 14 is arranged at the lower part of the butt joint thread 13, when the butt joint thread 13 is in threaded connection with the mounting groove, the inner wall of the O-shaped sealing ring 12 abuts against the annular groove, the outer wall of the O-shaped sealing ring 12 abuts against the inner wall of the mounting groove, and meanwhile, the outer wall of the ED-shaped sealing ring 14 abuts against the inner wall of the mounting groove again, and through double sealing of the O-shaped sealing ring 12 and the ED-shaped sealing ring 14 at the front end and the rear end of the butt joint. In addition, the branch hole design of the wiring hole 171 and the concave through hole 172 not only meets the wiring requirement, but also meets the requirement of balanced atmospheric pressure, and the ethylene propylene diene monomer material and the 316L stainless steel material both have good corrosion resistance.
Further, the cable 15 is made of teflon. The electrical plug 17 is a waterproof electrical plug. The maximum applicable pressure of the plane front end sealing pressure transmitter is 10 MPa. The integral protection grade of the plane front end sealing pressure transmitter is not lower than IP 67.
The polytetrafluoroethylene gasket and the cable 15 have good corrosion resistance, can be used for a long time in a liquid measurement environment without influencing transmission performance, and the waterproof electrical plug has better adaptability to liquid pressure test operation, and in the embodiment, the integral protection grade of the planar front-end sealing pressure transmitter at least can reach IP 67.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (8)
1. The planar front-end sealing pressure transmitter is characterized by comprising a pressure sensing core body, wherein the pressure sensing core body is of a cylindrical structure, a pressure sensing membrane is arranged on the first end face of the pressure sensing core body, the second end of the pressure sensing core body is connected with one end of a threaded connecting piece, the other end of the threaded connecting piece is connected with a cylinder body, one end, close to the pressure sensing membrane, of the pressure sensing core body is encircled inside the pressure sensing core body to form an annular groove, an O-shaped sealing ring is installed inside the annular groove, and one end, close to the threaded connecting piece, of the pressure sensing core body is encircled outside the pressure sensing core body to form butt joint threads; threaded connection spare and the barrel is inside be provided with the quick chip of power and the changer circuit board that the pressure sensing core body is connected, the changer circuit board deviates from the one end of pressure sensing diaphragm is connected with the cable conductor, pressure sensing core body second end still is connected with the breather pipe, the cable conductor with the breather pipe is along keeping away from the direction of pressure sensing diaphragm extends and is connected with electrical plug.
2. The flat front-end seal pressure transmitter of claim 1 wherein the pressure sensing core outside diameter is 18-20mm, the O-ring outside diameter is 0.5-1mm larger than the pressure sensing core outside diameter, and the mating threads are G1/2-G1 threads.
3. The planar front-end sealing pressure transmitter as claimed in claim 2, wherein the end face of the electrical plug, which is away from the cylinder, is provided with a wiring hole and a concave through hole, the cable is correspondingly connected with the wiring hole, and the vent pipe penetrates through the concave through hole.
4. The planar front-end seal pressure transmitter of claim 3, wherein an ED-type seal ring is installed between the butt thread and the threaded connector, the O-type seal ring and the ED-type seal ring are made of ethylene propylene diene monomer, and the pressure sensing core, the threaded connector and the cylinder are made of 316L stainless steel.
5. The planar front-end seal pressure transmitter of any one of claims 1 to 4, wherein the cable is made of Teflon.
6. The planar front end sealed pressure transmitter of any one of claims 1-4, wherein the electrical plug is a waterproof electrical plug.
7. The planar front end seal pressure transmitter of any one of claims 1-4, wherein the applicable pressure of the planar front end seal pressure transmitter is at most 10 MPa.
8. The planar front end seal pressure transmitter of any one of claims 1-4, wherein the planar front end seal pressure transmitter has an overall protection rating of no less than IP 67.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022133911.5U CN212807431U (en) | 2020-09-25 | 2020-09-25 | Plane front end sealing pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022133911.5U CN212807431U (en) | 2020-09-25 | 2020-09-25 | Plane front end sealing pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212807431U true CN212807431U (en) | 2021-03-26 |
Family
ID=75091255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022133911.5U Active CN212807431U (en) | 2020-09-25 | 2020-09-25 | Plane front end sealing pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212807431U (en) |
-
2020
- 2020-09-25 CN CN202022133911.5U patent/CN212807431U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212807431U (en) | Plane front end sealing pressure transmitter | |
| CN210375302U (en) | Differential pressure type accumulator liquid level meter | |
| CN212513441U (en) | Pressure measuring device and liquid level measuring instrument | |
| CN207730371U (en) | A kind of mining diesel engine explosion-proof pressure transmitter | |
| CN210513523U (en) | Pressure transmitter | |
| CN115790774A (en) | Multiple anti-leakage liquid level measuring device under high-temperature and high-pressure conditions | |
| CN201731915U (en) | Liquid level detection device | |
| CN215952847U (en) | Submersible differential pressure remote transmitter and measuring system | |
| CN212082707U (en) | Anticorrosive radiation protection type pressure transmitter | |
| CN111378976A (en) | Novel reference electrode is fixed device | |
| CN217542282U (en) | Liquid leakage detection assembly | |
| CN220398733U (en) | Temperature sensor for water turbine bearing bush | |
| CN216012547U (en) | Pressure transmitter for ship | |
| CN214407669U (en) | Vehicle gas cylinder liquid level sensor | |
| CN213688547U (en) | Liquid level sensor and liquid level control system | |
| CN217331736U (en) | Integrated intelligent energy-saving temperature control transmitter | |
| CN212844031U (en) | Wired temperature transmitter | |
| CN219161469U (en) | Temperature sensor with waterproof function of circuit | |
| CN213148192U (en) | Pressure transmitter integrated with pressure chip | |
| CN217155655U (en) | Oil-immersed pressure sensor | |
| CN219369017U (en) | Water pressure detection device | |
| CN212621246U (en) | Pressure transmitter | |
| CN213632516U (en) | Diaphragm pressure joint for pressure measuring equipment | |
| CN210464768U (en) | Pressure transmitter | |
| CN214667405U (en) | Pressure sensor for industrial instrument easy to assemble |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |