CN209197975U - A kind of high-precision pressure gauge based on thermal insulation principle - Google Patents
A kind of high-precision pressure gauge based on thermal insulation principle Download PDFInfo
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- CN209197975U CN209197975U CN201822249696.8U CN201822249696U CN209197975U CN 209197975 U CN209197975 U CN 209197975U CN 201822249696 U CN201822249696 U CN 201822249696U CN 209197975 U CN209197975 U CN 209197975U
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- measurement pipe
- pressure gauge
- thermal insulation
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Abstract
The utility model discloses a kind of high-precision pressure gauges based on thermal insulation principle, including gauge outfit, the gauge stand connecting with gauge outfit and the measurement pipe being threadedly coupled with gauge stand；Bourdon tube is equipped with inside the gauge outfit, the bourdon tube is divided into bending display unit and straight-bar induction part, the bending display unit is in semi arch cyclic structure, its end drives indicators turn by helve hammer, the straight-bar induction part protrudes into inside the measurement pipe, Nian Jie by sealant sealing between the diaphragm and measurement cavity inner wall, is additionally provided with thermal insulating cavity in the measurement pipe, thermal insulating cavity structure annular in shape and the periphery for being located at the measurement cavity are full of superconducting fluid in the thermal insulating cavity.By opening up heat insulation loop in measurement pipe, ambient temperature isolation is opened, the degrees of expansion for the testing medium for avoiding ambient temperature from influencing in measurement pipe, it is ensured that pressure gauge can measure the actual pressure of test substance, to guarantee accuracy of measurement, the precision of pressure gauge is improved.
Description
Technical field
The present invention relates to pressure gauge apparatus field, in particular to a kind of high-precision pressure gauge based on thermal insulation principle.
Background technique
Pressure gauge refers to the instrument for measuring and indicating using elastic element as sensing element higher than environmental pressure, using extremely
Commonly, it almost spreads all industrial flow and scientific research field.In heat distribution pipe network, oil gas transmission, water and air supply system, vehicle
The fields such as maintenance factory shop are seen everywhere.Especially in industrial stokehold and technology measurement process, due to mechanical compression
The elastic sensing element of table has very high mechanical strength and the characteristics such as convenient for production so that mechanical compression table obtain it is more next
More it is widely applied.
Pressure gauge is often influenced the error so as to cause measurement data by ambient temperature in use, causes
The accuracy of final data is not high, therefore how to reduce temperature to the greatest extent is to be worth the difficulty of research to the error of measurement data
Topic.
Summary of the invention
Regarding the issue above, the present invention provides a kind of high-precision pressure gauge based on thermal insulation principle, it can be effective
Ambient temperature is avoided to influence the error of measurement data.
To achieve the above object, the method that the present invention uses is: a kind of high-precision pressure gauge based on thermal insulation principle, including
Gauge outfit, the gauge stand being connect with gauge outfit and the measurement pipe being threadedly coupled with gauge stand；Bourdon tube, the spring are equipped with inside the gauge outfit
Pipe is divided into bending display unit and straight-bar induction part, and the bending display unit is in semi arch cyclic structure, and end passes through helve hammer band
Dynamic indicators turn, the straight-bar induction part protrude into inside the measurement pipe, are equipped in the measurement pipe and are connected to the bourdon tube
Measurement cavity, diaphragm is equipped in the measurement cavity, it is close by sealant between the diaphragm and measurement cavity inner wall
Envelope bonding, is additionally provided with thermal insulating cavity in the measurement pipe, thermal insulating cavity structure annular in shape and the periphery for being located at the measurement cavity,
Superconducting fluid is full of in the thermal insulating cavity.
As an improvement of the present invention, the bending display unit of the bourdon tube is affixed by suspension hook and the helve hammer.
As an improvement of the present invention, the helve hammer contacts firmly with the axial plane of pointer drives pointer to turn by frictional force
It is dynamic.
As an improvement of the present invention, connection screw thread is additionally provided on the lower end inner wall of the measurement pipe.
As an improvement of the present invention, the connection screw thread and diaphragm are at a distance of 10-15cm.
The utility model has the advantages that
1, a kind of high-precision pressure gauge based on thermal insulation principle of the present invention, it is heat-insulated by being opened up in measurement pipe
Ring is opened ambient temperature isolation, the degrees of expansion for the testing medium for avoiding ambient temperature from influencing in measurement pipe, it is ensured that pressure
Table can measure the actual pressure of test substance, to guarantee accuracy of measurement, improve the precision of pressure gauge；
2, driving indicators turn is contacted firmly by the friction of helve hammer, it is ensured that the rotation of pointer energy zero deflection further increases
Accuracy of measurement.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Each component in figure are as follows:
1- gauge outfit, 2- gauge stand, 3- measurement pipe, 4- bourdon tube, 401- bending display unit, 402- straight-bar induction part, 5- helve hammer,
6- pointer, 7- measure cavity, 8- diaphragm, 9- thermal insulating cavity, 10- superconducting fluid, 11- suspension hook, 12- connection screw thread.
Specific embodiment
Below with reference to embodiment and referring to attached drawing, the invention will be further described, it should be understood that following specific embodiments are only
For illustrating the present invention rather than limiting the scope of the invention.It should be noted that word " preceding " used in the following description,
" rear ", "left", "right", "up" and "down" refer to that the direction in width figure, word "inner" and "outside" refer respectively to direction or remote
Direction from geometric center of specific component.
As described in Figure, the present invention provides a kind of high-precision pressure gauge based on thermal insulation principle, including gauge outfit 1 and gauge outfit 1 connect
The gauge stand 2 connect and the measurement pipe 3 being threadedly coupled with gauge stand 2；Bourdon tube 4 is equipped with inside the gauge outfit 1, the bourdon tube 4, which divides, is
It is bent display unit 401 and straight-bar induction part 402, bending display unit and gauge outfit coaxial arrangement are used to indicate the pressure of testing medium
Value, and straight-bar induction part is then used to directly incude the pressure of testing medium, the bending display unit 401 is in semi arch ring-type knot
Structure, end drive pointer 6 to rotate by helve hammer 5, and the straight-bar induction part 402 protrudes into inside the measurement pipe 3, the measurement
It is equipped with the measurement cavity 7 being connected to the bourdon tube 3 in pipe 3, is equipped with diaphragm 8, the diaphragm 8 in the measurement cavity 7
It is Nian Jie by sealant sealing between measurement 7 inner wall of cavity, thermal insulating cavity 9, the thermal insulating cavity 9 are additionally provided in the measurement pipe 3
Structure annular in shape and the periphery for being located at the measurement cavity 7, the thermal insulating cavity 9 is interior to be full of superconducting fluid 10.
As another embodiment of the invention, the bending display unit 401 of the bourdon tube 4 is shaken by suspension hook 11 with described
It is affixed to hammer 5 into shape.
As another embodiment of the invention, the helve hammer 5 contacts firmly with the axial plane of pointer 6 drives finger by frictional force
Needle 6 rotates.
As another embodiment of the invention, connection screw thread 12 is additionally provided on the lower end inner wall of the measurement pipe 3.
As another embodiment of the invention, the connection screw thread 12 is with diaphragm 8 at a distance of 10-15cm.
A kind of high-precision pressure gauge based on thermal insulation principle provided by the invention, by opening up heat insulation loop in measurement pipe,
Ambient temperature isolation is opened, the degrees of expansion for the testing medium for avoiding ambient temperature from influencing in measurement pipe, it is ensured that pressure gauge
The actual pressure of test substance can be measured, to guarantee accuracy of measurement, improves the precision of pressure gauge.
The above described is only a preferred embodiment of the present invention, being not the limit for making any other form to the present invention
System, and made any modification or equivalent variations according to the technical essence of the invention, still fall within present invention model claimed
It encloses.
Claims (5)
1. a kind of high-precision pressure gauge based on thermal insulation principle, it is characterised in that: including gauge outfit (1), the table being connect with gauge outfit (1)
Seat (2) and the measurement pipe (3) being threadedly coupled with gauge stand (2)；Bourdon tube (4) are equipped with inside the gauge outfit (1), the bourdon tube
(4) it is divided into bending display unit (401) and straight-bar induction part (402), the bending display unit (401) is in semi arch cyclic structure,
Its end drives pointer (6) rotation by helve hammer (5), and the straight-bar induction part (402) protrudes into the measurement pipe (3) inside, institute
The measurement cavity (7) for being equipped in measurement pipe (3) and being connected to the bourdon tube (4) is stated, is equipped with diaphragm in the measurement cavity (7)
(8), Nian Jie by sealant sealing between the diaphragm (8) and measurement cavity (7) inner wall, it is also set in the measurement pipe (3)
Have thermal insulating cavity (9), the thermal insulating cavity (9) structure annular in shape and the periphery for being located at measurement cavity (7), the thermal insulating cavity (9)
It is interior to be full of superconducting fluid (10).
2. a kind of high-precision pressure gauge based on thermal insulation principle according to claim 1, it is characterised in that: the bourdon tube
(4) bending display unit (401) is affixed by suspension hook (11) and the helve hammer (5).
3. a kind of high-precision pressure gauge based on thermal insulation principle according to claim 2, it is characterised in that: the helve hammer
(5) it is contacted firmly with the axial plane of pointer (6) and drives pointer (6) to rotate by frictional force.
4. a kind of high-precision pressure gauge based on thermal insulation principle according to claim 1, it is characterised in that: the measurement pipe
(3) connection screw thread (12) are additionally provided on lower end inner wall.
5. a kind of high-precision pressure gauge based on thermal insulation principle according to claim 4, it is characterised in that: the connection spiral shell
Line (12) and diaphragm (8) are at a distance of 10-15cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822249696.8U CN209197975U (en) | 2018-12-29 | 2018-12-29 | A kind of high-precision pressure gauge based on thermal insulation principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822249696.8U CN209197975U (en) | 2018-12-29 | 2018-12-29 | A kind of high-precision pressure gauge based on thermal insulation principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209197975U true CN209197975U (en) | 2019-08-02 |
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ID=67430809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822249696.8U Active CN209197975U (en) | 2018-12-29 | 2018-12-29 | A kind of high-precision pressure gauge based on thermal insulation principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209197975U (en) |
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2018
- 2018-12-29 CN CN201822249696.8U patent/CN209197975U/en active Active
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