Ceramic pressure transmitter capable of combining various threads
By designing a ceramic pressure transmitter that can combine multiple threads, the problem of sensors requiring thread processing and calibration is solved, and early calibration and flexible production is achieved, which improves production efficiency and reduces costs.
Patent Information
- Application Number
- CN202422511451.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-17
AI Technical Summary
During the assembly process, existing ceramic sensors need to be processed first before calibration, and cannot be prepared in advance according to customer needs, and production flexibility is not high.
Design a ceramic pressure transmitter that can combine multiple threads. The ceramic sensor assembly with pipe joints can be calibrated in advance before threaded joints are installed, and sealed by the combination of intra-cavity of threaded joints and chamfers of pipe joints. The specific threads are then installed and welded and fixed according to customer needs.
It improves production efficiency, shortens production cycle, reduces labor costs, and achieves flexible product distribution and fast order completion.
Smart Images
Figure CN223229141U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of instruments and meters, and particularly relates to a ceramic pressure transmitter capable of combining multiple threads. Background Art
[0002] Pressure transmitters, which convert pressure into pneumatic or electrical signals for control and transmission, are among the most common sensors used in industrial applications. Ceramic pressure transmitters, due to their wear and corrosion resistance, high stability, reliability, and ease of installation, are widely used for measuring gas, liquid, and steam pressure in various industries, including power generation, metallurgy, industrial automation, environmental monitoring, petrochemicals, and fire protection. Furthermore, ceramic pressure transmitters offer lower production costs, saving customers money.
[0003] Currently, during the assembly process of ceramic sensors, the threads must be machined before assembly and calibration can proceed. Without known threads, production cannot pre-stock and calibrate according to customer-specified threads, limiting production flexibility. This practice also prevents pre-stocking based on thread size, resulting in low productivity. Summary of the Invention
[0004] The purpose of the present utility model is to address the deficiencies of the above-mentioned prior art and to provide a ceramic pressure transmitter that can be combined with multiple threads. Before the threaded joint is installed, the ceramic sensor assembly with the pipe joint can be calibrated in advance and the product can be prepared. Then, according to customer needs, the required threads can be installed and welded.
[0005] The technical solutions adopted in this utility model are as follows:
[0006] A ceramic pressure transmitter capable of combining multiple threads comprises a threaded joint and a ceramic sensor assembly with a pipe joint. The ceramic sensor assembly with the pipe joint is arranged on the upper part of the threaded joint. The threaded joint is provided with a threaded joint pressure-guiding cavity for transmitting medium pressure. The ceramic sensor assembly with the pipe joint comprises a metal tube shell with the pipe joint, a ceramic sensor with an amplifying circuit board, a rubber bracket and a metal cover. The ceramic sensor with the amplifying circuit board is limited to the lower surface of the rubber bracket and arranged inside the metal tube shell with the pipe joint. The metal cover is arranged at the upper end of the metal tube shell with the pipe joint and abuts against the upper surface of the rubber bracket. The metal tube shell with the pipe joint is provided with a pipe joint, and the pipe joint guide is arranged inside the threaded joint pressure-guiding cavity. The ceramic sensor with the amplifying circuit board comprises an amplifying circuit board and a ceramic core. The amplifying circuit board is arranged on the upper surface of the ceramic core. A signal line and a ceramic core metal needle are provided on the amplifying circuit board. A metal cover opening is provided on the upper surface of the metal cover. The end of the signal line passes through the metal cover opening to connect with the outside world.
[0007] Preferably, the threaded joint is provided with threads that can be changed into various types, and an inner chamfer of the threaded joint is provided on the upper surface of the threaded joint and on the top surface of the threaded joint pressure-guiding cavity.
[0008] Preferably, a pipe joint pressure guiding cavity is provided in the pipe joint, a pipe joint sealing O-ring groove is provided on the lower outer wall of the pipe joint, a pipe joint sealing O-ring is provided in the pipe joint sealing O-ring groove, a pipe joint chamfer is provided on the bottom surface of the pipe joint, and the pipe joint is arranged in the inside of the threaded joint pressure guiding cavity through the chamfer inside the threaded joint and the pipe joint chamfer. The lower surface of the metal pipe shell with the pipe joint is in contact with the upper surface of the threaded joint, so that the pipe joint sealing O-ring and the inner wall of the threaded joint pressure guiding cavity are squeezed and sealed against each other.
[0009] Preferably, the metal tube shell with a tube joint is provided with a tube shell accommodating cavity, the upper surface of the tube shell accommodating cavity is provided with a tube shell cavity chamfer, the inner bottom surface of the tube shell accommodating cavity is provided with a tube shell annular groove, a ceramic sensor sealing O-ring is provided in the tube shell annular groove, and the lower surface of the ceramic core and the bottom surface of the tube shell accommodating cavity are squeezed and sealed by the ceramic sensor sealing O-ring.
[0010] Preferably, the ceramic core is provided with a ceramic core pressure chamber for sealing and measuring medium pressure.
[0011] Preferably, the rubber bracket is provided with a bracket accommodating cavity, the amplifying circuit board is placed in the bracket accommodating cavity, a layer of sealant is laid on the upper surface of the amplifying circuit board, the upper surface of the rubber bracket is provided with a bracket outer chamfer, the rubber bracket is arranged in the tube shell accommodating cavity through the outer chamfer of the bracket and the chamfer inside the tube shell accommodating cavity, and is limited on the upper surface of the ceramic core.
[0012] Preferably, the metal cover is provided with a metal cover accommodating cavity, the diameter of the metal cover is larger than the diameter of the metal cover accommodating cavity and is consistent with the diameter of the metal tube shell with the pipe joint, the diameter of the metal cover accommodating cavity is consistent with the diameter of the bracket accommodating cavity, the lower surface of the metal cover and the upper surface of the metal tube shell with the pipe joint are fastened together by laser welding, and at the same time, the lower surface of the metal cover accommodating cavity is squeezed and fixed to the upper surface of the rubber bracket.
[0013] Preferably, the rubber bracket is made of fluororubber.
[0014] The beneficial effects of the present invention include: the present invention separates the ceramic sensor assembly with a pipe joint from the threaded joint, calibrates the ceramic sensor assembly with a pipe joint in advance, and in the case of unknown threads, can be pre-ordered and then assembled with the ceramic sensor assembly with a pipe joint and the threaded joint, thereby improving production efficiency, reducing product production cycle, and saving labor costs. Compared with previous assembly methods, the present invention's solution can use calibrated ceramic sensor assemblies with pipe joints to assemble different threads. The manufacturer only needs to produce the corresponding threads according to the order to complete the assembly test, greatly shortening the order completion cycle. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural diagram of the utility model;
[0016] Figure 2 This is a schematic diagram of the component modules of the present utility model;
[0017] Figure 3 This is an exploded view of the ceramic sensor assembly with a pipe joint in the present invention;
[0018] In the figure, 1. threaded joint; 11. thread; 12. threaded joint pressure-guiding cavity; 13. threaded joint inner chamfer; 2. ceramic sensor assembly with pipe joint; 21. pipe joint sealing O-ring; 22. metal tube shell with pipe joint; 23. ceramic sensor sealing O-ring; 24. ceramic sensor with amplifier circuit board; 25. rubber bracket; 26. metal cover; 27. sealant; 221. pipe joint chamfer; 222. pipe joint pressure-guiding cavity; 22 3. Pipe joint sealing O-ring; 224. Tube shell annular groove; 225. Tube shell accommodating cavity; 226. Inner chamfer of tube shell cavity; 227. Pipe joint; 228. Lower surface of tube shell; 241. Amplifying circuit board; 242. Ceramic core; 243. Signal line; 244. Ceramic core metal needle; 245. Ceramic core pressure cavity; 251. Bracket accommodating cavity; 252. Bracket outer chamfer; 261. Metal cover opening; 262. Metal cover accommodating cavity. DETAILED DESCRIPTION
[0019] The present invention will be further described below with reference to the accompanying drawings:
[0020] like Figure 1-3 As shown, the present invention provides a ceramic pressure transmitter capable of combining multiple thread types, including a threaded joint 1 and a ceramic sensor assembly 2 with a pipe joint. The ceramic sensor assembly 2 with a pipe joint is disposed on the upper portion of the threaded joint 1. The threaded joint 1 is provided with a threaded joint pressure-guiding cavity 12 for transmitting medium pressure. The threaded joint 1 is provided with a thread 11 that can be adapted into multiple types. The upper surface of the threaded joint 1, located at the top surface of the threaded joint pressure-guiding cavity 12, is provided with a threaded joint inner chamfer 13.
[0021] The ceramic sensor assembly 2 with a pipe joint in the present invention includes a metal tube shell 22 with a pipe joint, a ceramic sensor 24 with an amplifying circuit board, a rubber bracket 25 and a metal cover 26. The ceramic sensor 24 with the amplifying circuit board is limited to the lower surface of the rubber bracket 25 and is arranged inside the metal tube shell 22 with a pipe joint. The metal cover 26 is arranged at the upper end of the metal tube shell 22 with a pipe joint and is against the upper surface of the rubber bracket 25; the metal tube shell 22 with a pipe joint is provided with a pipe joint 227, and the pipe joint 227 is guided to the inside of the threaded joint pressure guiding cavity 12; the ceramic sensor 24 with an amplifying circuit board includes an amplifying circuit board 241 and a ceramic core 242. The amplifying circuit board 241 is provided on the upper surface of the ceramic core 242. A signal line 243 and a ceramic core metal needle 244 are provided on the amplifying circuit board 241. The metal cover 26 is provided with a metal cover opening 261. The end of the signal line 243 passes through the metal cover opening 261 to connect with the outside world.
[0022] The pipe joint 227 of the present invention is provided with a pipe joint pressure guiding cavity 222, and a pipe joint sealing O-ring groove 223 is provided on the lower outer wall of the pipe joint 227. A pipe joint sealing O-ring 21 is provided in the pipe joint sealing O-ring groove 223. The bottom surface of the pipe joint 227 is provided with a pipe joint chamfer 221. The pipe joint 227 is arranged in the interior of the threaded joint pressure guiding cavity 12 through the chamfer 13 inside the threaded joint and the pipe joint chamfer 221. The lower surface 228 of the metal pipe shell 22 with the pipe joint is in contact with the upper surface of the threaded joint 1, so that the pipe joint sealing O-ring 21 and the inner wall of the threaded joint pressure guiding cavity 12 are squeezed and sealed against each other.
[0023] The metal tube shell 22 with a tube joint in the present invention is provided with a tube shell accommodating cavity 225. The upper surface of the tube shell accommodating cavity 225 is provided with a tube shell inner chamfer 226. The inner bottom surface of the tube shell accommodating cavity 225 is provided with a tube shell annular groove 224. A ceramic sensor sealing O-ring 23 is installed in the tube shell annular groove 224. The lower surface of the ceramic core 242 and the bottom surface of the tube shell accommodating cavity 225 are squeezed and sealed by the ceramic sensor sealing O-ring 23. The ceramic core 242 is provided with a ceramic core pressure cavity 245 for sealing and measuring the medium pressure.
[0024] The rubber bracket 25 made of fluororubber in the present invention is provided with a bracket accommodating cavity 251, and the amplifier circuit board 241 is placed in the bracket accommodating cavity 251. A layer of sealant 27 is laid on the upper surface of the amplifier circuit board 241. The upper surface of the rubber bracket 25 is provided with a bracket outer chamfer 252. The rubber bracket 25 is arranged in the tube shell accommodating cavity 225 through the bracket outer chamfer 252 and the tube shell cavity inner chamfer 226, and is sealed and limited on the upper surface of the ceramic core 242, so as to enclose the amplifier circuit board 241 in the rubber bracket 25.
[0025] The metal cover 26 in the present invention is provided with a metal cover accommodating cavity 262. The diameter of the metal cover 26 is larger than the diameter of the metal cover accommodating cavity 262 and is consistent with the diameter of the metal tube shell 22 with a pipe joint. The diameter of the metal cover accommodating cavity 262 is consistent with the diameter of the bracket accommodating cavity 251. The lower surface of the metal cover 26 and the upper surface of the metal tube shell 22 with a pipe joint are fastened together by laser welding. At the same time, the lower surface of the metal cover accommodating cavity 262 is squeezed and fixed to the upper surface of the rubber bracket 25.
[0026] The use process of this utility model is as follows:
[0027] When in use: first, place the ceramic sensor O-ring 23 in the tube shell annular groove 224, and then place the ceramic sensor 24 with the amplifying circuit board into the tube shell accommodating cavity 225, so that the bottom surface of the tube shell accommodating cavity 225 contacts the lower surface of the ceramic core 242, and squeezes and seals each other; the rubber bracket 25 is guided by the outer chamfer 252 of the bracket and the inner chamfer 226 of the tube shell cavity to be arranged in the tube shell accommodating cavity 225, and the rubber bracket 25 is placed on the ceramic sensor 24 with the amplifying circuit board. end, so that the upper surface of the ceramic core 242 contacts the lower surface of the rubber bracket 25; the metal cover 26 is placed on the rubber bracket 25 and the upper end of the metal tube shell 22 with a pipe joint, and the lower end of the metal cover 26 is set in the tube shell accommodating cavity 225 through the guidance of the chamfer 226 in the tube shell cavity. The metal cover 26 and the metal tube shell 22 with a pipe joint are squeezed and sealed against each other by the force applied by the tooling, and the lower surface of the metal cover 26 and the upper surface of the metal tube shell 22 with a pipe joint are fastened together by laser welding.
[0028] The signal line 243 passes through the bracket housing cavity 251 and the metal cover opening 261 in sequence to connect to the outside world. A layer of sealant 27 is then poured onto the upper surface of the amplifier circuit board 241. Finally, the pipe joint sealing O-ring 21 is positioned within the pipe joint sealing O-ring groove 223. At this point, the assembly of the ceramic sensor assembly 2 with a pipe joint is complete. The ceramic sensor assembly 2 with a pipe joint is then pre-calibrated. Once qualified, the next step of assembly can be performed. A suitable threaded joint 1 is assembled according to customer requirements. The pipe joint 227 is positioned within the threaded joint pressure-guiding cavity 12, guided by the inner chamfer 13 of the threaded joint and the chamfer 221 of the pipe joint. This allows the lower surface 228 of the tube shell to abut against the upper surface of the threaded joint 1. The pipe joint sealing O-ring 21 and the inner wall of the threaded joint pressure-guiding cavity 12 are squeezed and sealed against each other. The threaded joint 1 and the ceramic sensor assembly 2 with a pipe joint are then securely connected via laser welding.
[0029] Other undescribed parts of the present invention are the same as those in the prior art.
Claims
1. A ceramic pressure transmitter capable of combining multiple threads, characterized by It comprises a threaded joint (1) and a ceramic sensor assembly (2) with a pipe joint, wherein the ceramic sensor assembly (2) with a pipe joint is arranged on the upper part of the threaded joint (1), and the threaded joint (1) is provided with a threaded joint pressure-guiding cavity (12) for transmitting medium pressure, and the ceramic sensor assembly (2) with a pipe joint comprises a metal tube shell (22) with a pipe joint, a ceramic sensor (24) with an amplifying circuit board, a rubber bracket (25) and a metal cover (26), wherein the ceramic sensor (24) with an amplifying circuit board is limited to the lower surface of the rubber bracket (25) and is arranged inside the metal tube shell (22) with a pipe joint, and the metal cover (26) is arranged on the metal tube shell (22) with a pipe joint. The upper end of the rubber bracket (25) is against the upper surface of the rubber bracket (25); the metal tube shell (22) with a tube joint is provided with a tube joint (227), and the tube joint (227) is guided to the inside of the threaded joint pressure-guiding cavity (12); the ceramic sensor (24) with an amplifying circuit board includes an amplifying circuit board (241) and a ceramic core (242), the amplifying circuit board (241) is provided on the upper surface of the ceramic core (242), the amplifying circuit board (241) is provided with a signal line (243) and a ceramic core metal needle (244), the metal cover (26) is provided with a metal cover opening (261), and the end of the signal line (243) passes through the metal cover opening (261) to connect with the outside world.
2. The ceramic pressure transmitter capable of combining multiple threads according to claim 1 is characterized in that The threaded joint (1) is provided with a thread (11) that can be changed into a plurality of types, and the upper surface of the threaded joint (1) and the top surface of the threaded joint pressure-guiding cavity (12) are provided with a threaded joint inner chamfer (13).
3. The ceramic pressure transmitter capable of combining multiple threads according to claim 2 is characterized in that A pipe joint pressure guiding cavity (222) is provided in the pipe joint (227), a pipe joint sealing O-ring groove (223) is provided on the lower outer wall of the pipe joint (227), a pipe joint sealing O-ring (21) is provided in the pipe joint sealing O-ring groove (223), a pipe joint chamfer (221) is provided on the bottom surface of the pipe joint (227), the pipe joint (227) is arranged inside the threaded joint pressure guiding cavity (12) via the inner chamfer (13) of the threaded joint and the pipe joint chamfer (221), the lower surface (228) of the metal pipe shell (22) with the pipe joint is in contact with the upper surface of the threaded joint (1), so that the pipe joint sealing O-ring (21) and the inner wall of the threaded joint pressure guiding cavity (12) are squeezed and sealed against each other.
4. The ceramic pressure transmitter capable of combining multiple threads according to claim 3 is characterized in that The metal tube shell with a tube joint (22) is provided with a tube shell accommodating cavity (225), the upper surface of the tube shell accommodating cavity (225) is provided with a tube shell cavity inner chamfer (226), the inner bottom surface of the tube shell accommodating cavity (225) is provided with a tube shell annular groove (224), a ceramic sensor sealing O-ring (23) is provided in the tube shell annular groove (224), and the lower surface of the ceramic core (242) and the bottom surface of the tube shell accommodating cavity (225) are mutually squeezed and sealed by the ceramic sensor sealing O-ring (23).
5. The ceramic pressure transmitter capable of combining multiple threads according to claim 4 is characterized in that The ceramic core (242) is provided with a ceramic core pressure chamber (245) for sealing and measuring medium pressure.
6. The ceramic pressure transmitter capable of combining multiple threads according to claim 5 is characterized in that The rubber bracket (25) is provided with a bracket accommodating cavity (251), the amplifying circuit board (241) is placed in the bracket accommodating cavity (251), the upper surface of the amplifying circuit board (241) is covered with a layer of sealant (27), the upper surface of the rubber bracket (25) is provided with a bracket outer chamfer (252), the rubber bracket (25) is arranged in the tube shell accommodating cavity (225) through the bracket outer chamfer (252) and the tube shell cavity inner chamfer (226), and is sealed and limited on the upper surface of the ceramic core (242).
7. The ceramic pressure transmitter capable of combining multiple threads according to claim 6 is characterized in that The metal cover (26) is provided with a metal cover accommodating cavity (262). The diameter of the metal cover (26) is larger than the diameter of the metal cover accommodating cavity (262) and is consistent with the diameter of the metal tube shell with a pipe joint (22). The diameter of the metal cover accommodating cavity (262) is consistent with the diameter of the bracket accommodating cavity (251). The lower surface of the metal cover (26) and the upper surface of the metal tube shell with a pipe joint (22) are fastened by laser welding. At the same time, the lower surface of the metal cover accommodating cavity (262) and the upper surface of the rubber bracket (25) are squeezed and fixed.
8. The ceramic pressure transmitter capable of combining multiple threads according to claim 6 is characterized in that The material of the rubber bracket (25) is fluororubber.