CN208833430U - Union pressure transmitter - Google Patents
Union pressure transmitter Download PDFInfo
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- CN208833430U CN208833430U CN201821819384.XU CN201821819384U CN208833430U CN 208833430 U CN208833430 U CN 208833430U CN 201821819384 U CN201821819384 U CN 201821819384U CN 208833430 U CN208833430 U CN 208833430U
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- sensor core
- pressure
- piston
- measuring cavity
- pressure measuring
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Abstract
A kind of union pressure transmitter, it include: pedestal, middle shell, sensor core, piston, circuit board and connection plug, the pressure measuring cavity of perforation is wherein set on pedestal, piston is arranged in the bottom of pressure measuring cavity, sensor core is fixedly installed in the top of pressure measuring cavity, silicone oil is filled in pressure measuring cavity between sensor core and piston, above-mentioned piston and sensor core fit closely sealing with pressure measuring cavity inner wall respectively；Tracting pressuring hole corresponding with pressure measuring cavity is arranged in base bottom；Middle shell is mutually fixed with pedestal, and circuit board, sensor core and circuit board electrical connection are arranged in the space formed between middle shell and pedestal, connection plug, connection plug and circuit board electrical connection are arranged on middle shell.The pressure of liquid compresses silicone oil conduction to sensor core by piston, pressure measurement is carried out by sensor core, contact so as to avoid testing liquid with sensor core improves the durability of sensor core, also reduces the probability of sensor core damage.
Description
Technical field
The utility model relates to the technical field of industrial instrument, specifically a kind of union pressure transmitter.
Background technique
Pressure signal measurement is common measuring technique means in industrial automatic control, and pressure transmitter is a kind of normal
The pressure signal measuring device seen, according to factors such as application, measurement range, required precision, application costs, selected biography
Sensor component type is different.
Union pressure transmitter is usually applied on the drilling equipment of petroleum industry, is particularly applied to fracturing unit truck and well cementation
High-tension measurement is carried out on vehicle, has the advantages that high-precision, height respond, are firm in structure.Union pressure inverting in the prior art
Usually end uses diaphragm structure to device before measuring, but the service life of diaphragm structure is also relatively short, is easy to produce using the later period
Measurement error.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of union pressure transmitters.
The utility model is adopted the technical scheme that solve technical problem present in well-known technique:
The union pressure transmitter of the utility model, comprising: pedestal, middle shell, sensor core, piston, circuit board and connect
The pressure measuring cavity of perforation is wherein arranged in line plug on pedestal, piston is arranged in the bottom of pressure measuring cavity, and the top of pressure measuring cavity, which is fixedly installed, to be passed
Sensor core, is filled with silicone oil in the pressure measuring cavity between sensor core and piston, above-mentioned piston and sensor core respectively with
Pressure measuring cavity inner wall fits closely sealing；Tracting pressuring hole corresponding with pressure measuring cavity is arranged in base bottom, and the internal diameter of tracting pressuring hole, which is greater than, to be surveyed
Press the internal diameter of chamber；Middle shell is mutually fixed with pedestal, and circuit board is arranged in the space formed between middle shell and pedestal, sets on circuit board
Amplifying circuit, sensor core and circuit board electrical connection are set, connection plug is set on middle shell, connection plug is electrically connected with circuit board
It connects.
The utility model can also use following technical measures:
It is sealed between the piston and pressure measuring cavity inner wall by double-layer seal rings；Sensor core and pressure measuring cavity inner wall it
Between pass through sealing ring seal.
Pressure ring, the inner thread connection of pressure ring and tracting pressuring hole are set in the tracting pressuring hole, and the internal diameter of pressure ring is less than piston
Outer diameter.
Pressure ring, the inner thread connection of pressure ring and tracting pressuring hole are set in the tracting pressuring hole, and pressure ring corresponds to the one of piston
Lateral edge radially-inwardly extends and forms pressing plate, and the through-hole diameter between pressing plate is less than the outer diameter of piston.
The pressure measuring cavity corresponds to the radially inwardly extending formation limit plate of one side edge equipped with sensor core, limit
Sensor core is withstood in position plate support.
The utility model has the advantages and positive effects of:
In the union pressure transmitter of the utility model, pressure measuring cavity is arranged in perforation pedestal, and piston and sensor core set up separately
Pressure measuring cavity two sides, silicone oil is full of in the pressure measuring cavity between piston and sensor core, and the pressure of liquid compresses silicone oil by piston
And then conduct to sensor core, pressure measurement is carried out by sensor core, so as to avoid testing liquid and sensor core
Contact, improve the durability of sensor core, also reduce sensor core damage probability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the union pressure transmitter of the utility model.
Specific embodiment
The technical solution of the utility model is described in detail below by way of the drawings and specific embodiments.
As shown in Figure 1, the union pressure transmitter of the utility model, comprising: pedestal 1, sensor core 3, is lived at middle shell 2
Plug 4, circuit board 5 and connection plug 6, are wherein arranged the pressure measuring cavity 12 of perforation on pedestal, the bottom of pressure measuring cavity is arranged piston, surveys pressure
Sensor core is fixedly installed in the top of chamber, is filled with silicone oil, above-mentioned piston in the pressure measuring cavity between sensor core and piston
Sealing is fitted closely with pressure measuring cavity inner wall respectively with sensor core；Tracting pressuring hole 9 corresponding with pressure measuring cavity is arranged in base bottom,
The internal diameter of tracting pressuring hole is greater than the internal diameter of pressure measuring cavity；Middle shell is mutually fixed with pedestal by screw, is formed between middle shell and pedestal
Circuit board is set in space, amplifying circuit, sensor core and circuit board electrical connection are set on circuit board, wiring is set on middle shell
Plug, connection plug and circuit board electrical connection.
It is sealed between piston and pressure measuring cavity inner wall by double-layer seal rings 7；Lead between sensor core and pressure measuring cavity inner wall
Sealing ring sealing is crossed, to ensure that the leakproofness of silicone oil in pressure measuring cavity, improves measurement accuracy.
Pressure ring, the inner thread connection of pressure ring and tracting pressuring hole are set in tracting pressuring hole, the internal diameter of pressure ring is less than the outer diameter of piston,
To seized piston, prevent piston by deviating from tracting pressuring hole.
Pressure ring 11, the inner thread connection of pressure ring and tracting pressuring hole are set in tracting pressuring hole, and pressure ring corresponds to a lateral edge of piston
Radially-inwardly extend and form pressing plate 8, the through-hole diameter between pressing plate is less than the outer diameter of piston, so that seized piston, prevents piston
By deviating from tracting pressuring hole.
Pressure measuring cavity corresponds to the radially inwardly extending formation limit plate of one side edge equipped with sensor core, limit plate 10
Sensor core is withstood in support, to guarantee that sensor core can be securely held, improves measurement accuracy.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, it is any however, be not intended to limit the utility model although the utility model has been described by way of example and in terms of the preferred embodiments
Those skilled in the art are not departing within the scope of technical solutions of the utility model, certainly can be using in the technology disclosed
Appearance makes a little change or modification, becomes the equivalent embodiment of equivalent variations, but all without departing from technical solutions of the utility model
Content, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention,
It is all within the scope of the technical scheme of the utility model.
Claims (5)
1. a kind of union pressure transmitter characterized by comprising pedestal, middle shell, sensor core, piston, circuit board and connect
The pressure measuring cavity of perforation is wherein arranged in line plug on pedestal, piston is arranged in the bottom of pressure measuring cavity, and the top of pressure measuring cavity, which is fixedly installed, to be passed
Sensor core, is filled with silicone oil in the pressure measuring cavity between sensor core and piston, above-mentioned piston and sensor core respectively with
Pressure measuring cavity inner wall fits closely sealing；Tracting pressuring hole corresponding with pressure measuring cavity is arranged in base bottom, and the internal diameter of tracting pressuring hole, which is greater than, to be surveyed
Press the internal diameter of chamber；Middle shell is mutually fixed with pedestal, and circuit board is arranged in the space formed between middle shell and pedestal, sets on circuit board
Amplifying circuit, sensor core and circuit board electrical connection are set, connection plug is set on middle shell, connection plug is electrically connected with circuit board
It connects.
2. union pressure transmitter according to claim 1, it is characterised in that: by double between piston and pressure measuring cavity inner wall
Layer sealing ring sealing；It is sealed between sensor core and pressure measuring cavity inner wall by sealing ring.
3. union pressure transmitter according to claim 2, it is characterised in that: pressure ring is set in tracting pressuring hole, pressure ring with draw
The inner thread connection in hole is pressed, the internal diameter of pressure ring is less than the outer diameter of piston.
4. union pressure transmitter according to claim 2, it is characterised in that: pressure ring is set in tracting pressuring hole, pressure ring with draw
The inner thread connection in hole is pressed, the side that pressure ring corresponds to piston is extended radially inward forms pressing plate, the through-hole between pressing plate
Diameter is less than the outer diameter of piston.
5. according to claim 1, union pressure transmitter described in any claim in 2,3 or 4, it is characterised in that: survey pressure
Chamber corresponds to the radially inwardly extending formation limit plate of one side edge equipped with sensor core, and sensor is withstood in limit plate support
Core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821819384.XU CN208833430U (en) | 2018-11-06 | 2018-11-06 | Union pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821819384.XU CN208833430U (en) | 2018-11-06 | 2018-11-06 | Union pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208833430U true CN208833430U (en) | 2019-05-07 |
Family
ID=66320129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821819384.XU Active CN208833430U (en) | 2018-11-06 | 2018-11-06 | Union pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208833430U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044520A (en) * | 2019-05-29 | 2019-07-23 | 南京元感微电子有限公司 | The force snesor of pressure between measurement solid |
-
2018
- 2018-11-06 CN CN201821819384.XU patent/CN208833430U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044520A (en) * | 2019-05-29 | 2019-07-23 | 南京元感微电子有限公司 | The force snesor of pressure between measurement solid |
| CN110044520B (en) * | 2019-05-29 | 2021-02-26 | 南京元感微电子有限公司 | Force sensor for measuring pressure between solids |
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