CN206281608U - A kind of pressure transmitter caliberating device - Google Patents
A kind of pressure transmitter caliberating device Download PDFInfo
- Publication number
- CN206281608U CN206281608U CN201621376821.6U CN201621376821U CN206281608U CN 206281608 U CN206281608 U CN 206281608U CN 201621376821 U CN201621376821 U CN 201621376821U CN 206281608 U CN206281608 U CN 206281608U
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- hole
- shaft part
- cavity volume
- screwed
- pressure transmitter
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Abstract
The utility model discloses a kind of pressure transmitter caliberating device.During pressure transmitter is produced, the air pressure demarcation to pressure transmitter is one of critical process, and one equipment of existing air pressure caliberating device typically can not simultaneously demarcate multiple pressure transmitters.The utility model includes matrix, envelope gas axle, sealing ring and spring.Main passage is offered on the end face of described matrix, main passage is blind hole.N installation position, 2≤n≤10 are evenly equipped with along main passage axis direction in matrix, installation position includes screwed hole group, connecting hole, cavity volume hole, enters axis hole and m pair passage, 2≤m≤6, screwed hole group includes aperture is sequentially reduced from outside to inside four screwed holes.The utility model gas outlet is automatically switched off in a non-operative state, and can simultaneously demarcate multiple pressure transmitters.The utility model can adapt to the pressure transmitter of different model.
Description
Technical field
The utility model belongs to air pressure calibration technique field, and in particular to a kind of pressure transmitter caliberating device.
Background technology
During pressure transmitter is produced, the air pressure demarcation to pressure transmitter is one of critical process.
The execution standard of pressure transmitter is《DB33/T 570-2005 pressure transmitters》, wherein regulation demarcates 0.5 grade and following pressure
Power transmitter equipment requirement class of accuracy more than 0.2 grade, for high-precision equipment, expensive and maintenance cost
Height, and every equipment can only demarcate a product, have a strong impact on the production efficiency of enterprise.
The content of the invention
The purpose of this utility model is to provide one kind simultaneously to demarcate multiple pressure transmitters, be can adapt to
The air pressure caliberating device of plurality of specifications pressure transmitter.
The utility model includes matrix, envelope gas axle, sealing ring and spring.Described matrix side offers main passage, main
Passage is blind hole.N installation position is evenly equipped with along main passage axis direction in matrix, 2≤n≤10 set in each installation position
Put an envelope gas axle；Installation position include screwed hole group, connecting hole, cavity volume hole, enter axis hole and m pair passage, 2≤m≤6, institute
State screwed hole group and be arranged on matrix outermost end；Screwed hole group includes four screwed holes that big footpath is sequentially reduced from outside to inside, adjacent
Screwed hole is connected, and the equal length of each screwed hole is 2~4mm.Connecting hole, cavity volume hole in same installation position, enter axis hole and
The axis of each screwed hole overlaps in screwed hole group.The outer end in the cavity volume hole is logical positioned at the screwed hole of inner terminal with screwed hole group
Connecting hole connection is crossed, cavity volume hole aperture is more than connecting hole aperture；The inside and outside end of m secondary passage be respectively communicated with main passage and
Cavity volume hole is inner, and the inner of secondary passage is provided with chamfering.The bottom end closure for entering axis hole is set, and top connects with cavity volume hole.
Described envelope gas axle includes the first shaft part, the second shaft part and the 3rd shaft part, first shaft part and the second shaft part
The transition shaft shoulder is first shaft shoulder, and the transition shaft shoulder of second shaft part and the 3rd shaft part is second shaft shoulder.The end face of the first shaft part
Center offers venthole, and venthole is blind hole, and venthole hole wall is offered along the circumferential uniform and axis of venthole along footpath
To multiple air-vents of arrangement, the outer end of air-vent opens.Second shaft part and the 3rd shaft part are arranged in cavity volume hole, first axle
Section constitutes sliding pair with connecting hole, and stretches into screwed hole group, and the 3rd shaft part is embedded in axis hole；First shaft shoulder and cavity volume
Outer end of hole face is adjacent to, and sealing ring is provided between first shaft shoulder and cavity volume outer end of hole face, and sealing ring is fixed on cavity volume outer end of hole face
In the seal groove for opening up；The outer face of the first shaft part is higher than second screw thread outer end of hole from outside to inside.The 3rd described shaft part
On be nested with spring, the two ends of spring compress matrix and second shaft shoulder respectively；The maximum compression length of the spring is more than or equal to
In screwed hole group the length of all screwed holes and；The maximum compression length of spring is less than or equal to the 3rd shaft part inner face and enters axle
The distance at bottom hole end.
Big footpath is followed successively by 24mm, 20mm, 14mm and 10mm to four screwed holes in the screwed hole group from outside to inside.
It is fixed with described main passage and connects gas head, is connect gas head and be connected with air pump by tracheae.
The utility model has an advantageous effect in that：
1st, the gas outlet of caliberating device is set to the utility model the screwed hole group of multiple screwed hole compositions, be can adapt to
The pressure transmitter of different model.
2nd, the utility model realizes the switch of gas outlet by check valve so that gas outlet is automatic in a non-operative state
Close.
3rd, the utility model is provided with four gas outlets, can simultaneously demarcate multiple pressure transmitters.
4th, the utility model uses metal structure, and Stability Analysis of Structures is safe.
Brief description of the drawings
Fig. 1 is sectional view of the present utility model；
Fig. 2 is the zoomed-in view of part A in Fig. 1.
Specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in figure 1, a kind of pressure transmitter caliberating device, including matrix 1, envelope gas axle 2, sealing ring 3, spring 4 and connect
Gas first 5.The side of matrix 1 offers main passage, and main passage is blind hole, is fixed with main passage and connects gas first 5.The edge of matrix 1
Main passage axis direction is evenly equipped with four installation positions, and an envelope gas axle 2 is set in each installation position；Installation position includes screwed hole
Group, connecting hole, cavity volume hole, enter the secondary passages of axis hole and two, screwed hole group is arranged on the outermost end of matrix 1；Screwed hole group includes
Big footpath is followed successively by four screwed holes of 24mm, 20mm, 14mm and 10mm from outside to inside, and adjacent screw holes are connected, each screwed hole
Length is 3mm.Connecting hole, cavity volume hole in same installation position, the axis for entering each screwed hole in axis hole and screwed hole group overlap.
The outer end in cavity volume hole is connected with the screwed hole in screwed hole group positioned at inner terminal by connecting hole, and connecting hole aperture is 5mm, cavity volume
Hole aperture is more than connecting hole aperture；Two secondary passage centerings are arranged in into axis hole both sides, and the inside and outside end of secondary passage connects respectively
Lead to main passage and cavity volume hole is inner, the inner of secondary passage is provided with chamfering.Enter the bottom end closure setting of axis hole, top and cavity volume
Hole connects.
As illustrated in fig. 1 and 2, envelope gas axle 2 includes the first shaft part, the second shaft part and the 3rd shaft part, the first shaft part and the second axle
The transition shaft shoulder of section is first shaft shoulder, and the transition shaft shoulder of the second shaft part and the 3rd shaft part is second shaft shoulder.The end face of the first shaft part
Center offers venthole, and venthole is blind hole, and venthole hole wall opens up two radially arranged air-vents, air-vent
Outer end open.Second shaft part and the 3rd shaft part are arranged in cavity volume hole, and the first shaft part constitutes sliding pair with connecting hole, and stretches
Enter in screwed hole group；3rd shaft part is embedded in axis hole；First shaft shoulder is adjacent to cavity volume outer end of hole face, and first shaft shoulder and cavity volume
Sealing ring 3 is provided between outer end of hole face, sealing ring 3 is fixed in the seal groove that cavity volume outer end of hole face opens up；Outside first shaft part
End face is higher than second screw thread outer end of hole from outside to inside.Spring 4 is nested with 3rd shaft part, the two ends of spring 4 compress base respectively
The shaft shoulder of body 1 and second；The maximum compression length of spring 4 more than or equal to all screwed holes in screwed hole group length and；First
The shaft shoulder is adjacent under state with cavity volume outer end of hole, and the maximum compression length of spring 4 is less than or equal to the 3rd shaft part inner face and enters axle
The distance at bottom hole end.
Operation principle of the present utility model is as follows：
The air intake of pressure transmitter to be calibrated is screwed in a screwed hole in the big footpath of correspondence in the screwed hole group of matrix 1
It is interior, four installation positions simultaneously or choose it is wherein several come nominal pressure transmitter.The pressure transmitter of screw-in is pressed down against sealing gas
Axle 2, makes the slide downward of envelope gas axle 2, and spring 4 shrinks；Originally connected with connecting hole by the cavity volume hole that envelope gas axle 2 is blocked.Gas is passed through
Connect gas first 5, main passage, secondary passage, cavity volume hole, connecting hole, air-vent and venthole and enter pressure transmitter.
After completing pressure transmitter demarcation, pressure transmitter is screwed out, first shaft shoulder of envelope gas axle 2 is under the action of the spring
Again fitted with cavity volume outer end of hole face, blocking gas enters connecting hole, the installation position for being not connected with pressure transmitter will not gas leakage, guarantor
In the pressure transmitter that card fully enters demarcation into the gas of main passage so that demarcate accurate.
Claims (3)
1. a kind of pressure transmitter caliberating device, including matrix, envelope gas axle, sealing ring and spring；It is characterized in that：Described matrix
Side offers main passage, and main passage is blind hole；N installation position is evenly equipped with along main passage axis direction in matrix, 2≤
N≤10, set an envelope gas axle in each installation position；Installation position includes screwed hole group, connecting hole, cavity volume hole, enters axis hole and m
Secondary passage, 2≤m≤6, the screwed hole group is arranged on matrix outermost end；Screwed hole group includes that big footpath subtracts successively from outside to inside
Four small screwed holes, adjacent screw holes connection, the equal length of each screwed hole is 2~4mm；Company in same installation position
Connect hole, cavity volume hole, enter the axis coincidence of each screwed hole in axis hole and screwed hole group；In the outer end in the cavity volume hole and screwed hole group
Screwed hole positioned at inner terminal is connected by connecting hole, and cavity volume hole aperture is more than connecting hole aperture；M secondary passage it is inside and outside
End is respectively communicated with main passage and cavity volume hole is inner, and the inner of secondary passage is provided with chamfering；The bottom end closure for entering axis hole is set, top
End connects with cavity volume hole；
Described envelope gas axle includes the first shaft part, the second shaft part and the 3rd shaft part, the transition of first shaft part and the second shaft part
The shaft shoulder is first shaft shoulder, and the transition shaft shoulder of second shaft part and the 3rd shaft part is second shaft shoulder；The end face center of the first shaft part
Position offers venthole, and venthole is blind hole, and venthole hole wall is offered along the circumferential uniform and axis of venthole radially cloth
The multiple air-vents put, the outer end of air-vent opens；Second shaft part and the 3rd shaft part are arranged in cavity volume hole, the first shaft part with
Connecting hole constitutes sliding pair, and stretches into screwed hole group, and the 3rd shaft part is embedded in axis hole；Outside first shaft shoulder and cavity volume hole
End face is adjacent to, and sealing ring is provided between first shaft shoulder and cavity volume outer end of hole face, and sealing ring is fixed on cavity volume outer end of hole face and opens up
Seal groove in；The outer face of the first shaft part is higher than second screw thread outer end of hole from outside to inside；Covered on the 3rd described shaft part
Spring is put, the two ends of spring compress matrix and second shaft shoulder respectively；The maximum compression length of the spring is more than or equal to screw thread
The length of all screwed holes of Kong Zuzhong and；The maximum compression length of spring is less than or equal to the 3rd shaft part inner face and enters axis hole bottom
The distance at end.
2. a kind of pressure transmitter caliberating device according to claim 1, it is characterised in that：In the screwed hole group four
Big footpath is followed successively by 24mm, 20mm, 14mm and 10mm to individual screwed hole from outside to inside.
3. a kind of pressure transmitter caliberating device according to claim 1, it is characterised in that：It is solid on described main passage
Surely gas head is connect, gas head is connect and is connected with air pump by tracheae.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621376821.6U CN206281608U (en) | 2016-12-15 | 2016-12-15 | A kind of pressure transmitter caliberating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621376821.6U CN206281608U (en) | 2016-12-15 | 2016-12-15 | A kind of pressure transmitter caliberating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206281608U true CN206281608U (en) | 2017-06-27 |
Family
ID=59072907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621376821.6U Active CN206281608U (en) | 2016-12-15 | 2016-12-15 | A kind of pressure transmitter caliberating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206281608U (en) |
-
2016
- 2016-12-15 CN CN201621376821.6U patent/CN206281608U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |