CN207223148U - A kind of Medical C type Bourdon pressure gauge - Google Patents
A kind of Medical C type Bourdon pressure gauge Download PDFInfo
- Publication number
- CN207223148U CN207223148U CN201721138708.9U CN201721138708U CN207223148U CN 207223148 U CN207223148 U CN 207223148U CN 201721138708 U CN201721138708 U CN 201721138708U CN 207223148 U CN207223148 U CN 207223148U
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- CN
- China
- Prior art keywords
- bourdon tube
- type bourdon
- pressure gauge
- free end
- medical
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Abstract
The utility model discloses a kind of Medical C type Bourdon pressure gauge, belong to pressure gauge technical field.It include copper sleeve, c-type Bourdon tube with silently, the c-type Bourdon tube includes free end and fixing end, and c-type Bourdon tube fixing end is welded on copper sleeve, and c-type Bourdon tube free end is in self-closing shape, silently it is overlapped on the outside of c-type Bourdon tube free end, by being welded and fixed.The utility model Medical C type bourdon tube pressure gauge, by the way that the welding of c-type Bourdon tube free end is shut, is silently overlapped on the outside of c-type Bourdon tube free end, cleans remaining scaling powder；So that the Medical C type bourdon tube pressure gauge of the utility model meets that health, environmental protection, precision accurately require, can be directly used on medical equipment.
Description
Technical field
The utility model belongs to pressure gauge technical field, more specifically to a kind of Medical C type Bourdon pressure gauge.
Background technology
For some professional medical equipments, it is necessary to be controlled the gas pressure or fluid pressure of equipment, it is necessary to make
With substantial amounts of pressure gauge.It is well known that needing to use Bourdon tube in the production of pressure gauge, Bourdon tube is the bending change using pipe
Or the elastic sensing element of torsional deflection measurement pressure, bourdon tube is also known as, one end of Bourdon tube is movable end, and one end is fixation
End, its cross sectional shape are gradually expanded into circle for ellipse or pancake, the pipe of noncircular cross section under the action of its interior pressure,
Movable end produces the displacement into certain relation with pressure size at this time, and it is the size that may indicate that pressure that movable end, which drives pointer, living
Shut using welding manner moved end.
Such as Chinese patent CN201611252324.X discloses a kind of pressure gauge high-pressure spiral-coil free end antiseepage solder skip
Technique is connect, is included the following steps：Method by the helix tube free end mouth of pipe with argon arc welding spot welding, by high voltage direct current electric pulse,
1150 DEG C of -1300 DEG C of high temperature are produced, pipe port is melted integrally, reaches whole sealing status；Helix tube free end reaches complete close
1.2~1.5 times of test static pressure of superpressure are carried out after envelope state；Soldering-tin layer is coated with its outer wall after helix tube free end is hermetically sealed,
It is inserted in helix tube blind end in mounting groove edge silently；Using electric iron to helix tube free end and silently the scolding tin between mounting groove
Layer is welded, and turns sequence after cooling and solidifying；For another example Chinese patent CN200480008303.2 discloses a kind of spring-elastic and surveys
Measure element, including the measurement pipe of an arc, a matrix and one be used for measuring device joint component, in order to realize it is complete from
Dynamic weld simultaneously improves heat affected area, the connection between measurement pipe and matrix and between measurement pipe and joint component indirectly by
One welding connecting element is realized.
Above-mentioned spiral pressure gauge, is largely helped due to having used to remain in scaling powder and helix tube in welding process
Solder flux, if being applied on medical equipment, it will cause medical equipment pollution or other the problem of, therefore limit bowden tubular type
Application of the pressure gauge in medicine and hygiene fields.In view of medical equipment requires environmental protection, clean hygiene, precision accurate, currently on the market
Medical equipment uses diaphragm body pressure gauge, and the operation principle of diaphragm body pressure gauge is to measure the membrane that medium first passes to diaphragm body
On piece, diaphragm bear pressure and corresponding elastic deformation occur, and are driven by the medium substituted the bad for the good in pressure gauge and diaphragm
Bourdon tube free end is subjected to displacement, so that gauge hand indicates corresponding pressure registration.But diaphragm body pressure gauge price
Too expensive, increases the manufacture cost of medical equipment, and corresponding medical equipment price is also substantially increased, and influences medical equipment
Widely use.
The content of the invention
1. to solve the problems, such as
For having used scaling powder in existing bourdon tube pressure gauge welding process and Bourdon tube free end internal residual has
Substantial amounts of scaling powder, is limited in the problem of being applied on medical equipment, and the utility model provides a kind of Medical C type bowden pipe pressure
Table, the bourdon tube pressure gauge silently use overlapping mode with Bourdon tube, and welding assisted agent residuals are in outer surface during welding, easy to clear
Wash, Medical C type Bourdon pressure gauge can be directly used on medical equipment, and solving bourdon tube pressure gauge can not cure
With the problem applied in equipment.
2. technical solution
To solve the above-mentioned problems, technical solution is as follows used by the utility model：
The utility model Medical C type Bourdon pressure gauge include copper sleeve, c-type Bourdon tube with silently, the c-type Bourdon tube
Including free end and fixing end, c-type Bourdon tube fixing end is welded on copper sleeve, and c-type Bourdon tube free end is in self-closing shape, vexed
Head is overlapped on the outside of c-type Bourdon tube free end, by being welded and fixed.
In a kind of possible embodiment of the utility model, the c-type Bourdon tube free end is in flat, its thickness is
0.2~0.3mm.
In a kind of possible embodiment of the utility model, the welding uses Sn welding wires, and wherein lead content is less than
0.1%th, Cu content≤0.6%, Ag content >=4%.
In a kind of possible embodiment of the utility model, the overlapped points silently are apart from c-type Bourdon tube free end
Edge 1-2 mm.
In a kind of possible embodiment of the utility model, the c-type Bourdon tube is by copper-based or ferrous alloy material system
Form.
In a kind of possible embodiment of the utility model, the section of the c-type Bourdon tube is oval cross section or flat
Circular section.
3. beneficial effect
Compared with the prior art, the beneficial effects of the utility model are：
(1) the utility model Medical C type Bourdon pressure gauge, by the way that the welding of c-type Bourdon tube free end is shut, silently takes
It is connected on the outside of c-type Bourdon tube free end, cleans remaining scaling powder；So that the Medical C type Bourdon pressure gauge of the utility model
Meet that health, environmental protection, precision accurately require, can be directly used on medical equipment；
(2) the utility model Medical C type Bourdon pressure gauge, its Bourdon tube free end are in flat, its thickness for 0.2~
0.3 mm, can control the gap of c-type Bourdon tube free end indirectly, meet the clearance requirement of 0.2~0.3mm of Laser Welding, c-type ripple
It is closely knit to step on the welding of pipe free end, ensures normal use；
(3) the utility model Medical C type Bourdon pressure gauge, it uses the Sn welding wires of Ag content >=4%, and weld resists
Crack good mechanical property, in addition, the lead content in Sn welding wires is less than 0.1%, it is more environmentally-friendly, do not pollute the environment, while on a small quantity
Lead can also promote the shaping in molten bath；Cu content≤0.6%, on the one hand reduces Ag contents in welding wire, reduces production cost,
On the other hand the weld formed containing copperwelding rod, further improves cracking resistance mechanical performance, has ensured the stability of welding surface.
Brief description of the drawings
The technical solution of the utility model is described in further detail below with reference to drawings and examples, still
It should be known that these attached drawings only design for task of explanation, therefore not as the restriction of the scope of the utility model.In addition,
Unless otherwise indicated, these attached drawings are meant only to conceptually illustrate structure construction described herein, without to carry out to scale
Draw.
Fig. 1 is the Bourdon tube attachment structure schematic diagram of the utility model Medical C type Bourdon pressure gauge；
Fig. 2 is the Bourdon tube structure diagram of the utility model Medical C type Bourdon pressure gauge；
Fig. 3 is the A of Fig. 2 to schematic diagram.
In figure：100th, c-type Bourdon tube；101st, free end；102nd, fixing end；200th, cutting；300th, copper sleeve；400th, it is vexed
Head.
Embodiment
Attached drawing hereafter with reference to the detailed description of the exemplary embodiment of the utility model, which forms the one of description
Part, shows the enforceable exemplary embodiment of the utility model as example in the figure.Although these exemplary realities
Example is applied to be described in sufficient detail so that those skilled in the art can implement the utility model, it is to be understood that it can be realized
His embodiment and can various changes can be made to the utility model in the case where not departing from the spirit and scope of the utility model.Hereafter
Required the scope of the utility model is not limited to the more detailed description of the embodiment of the utility model, and only
The characteristics of in order to be illustrated and not limit to the utility model and the description of feature, to propose to perform the utility model
Best mode, and be sufficient so that those skilled in the art and can implement the utility model.Therefore, the scope of the utility model only by
Appended claims limit.
Hereafter the detailed description to the utility model and example embodiment can be more fully understood with reference to attached drawing, wherein this reality
Identified with new element and feature by reference numeral.
Embodiment 1
As shown in Figure 1, the present embodiment Medical C type Bourdon pressure gauge include copper sleeve 300, c-type Bourdon tube 100 with silently
400, c-type Bourdon tube 100 includes free end 101 and fixing end 102, and c-type Bourdon tube fixing end 102 is welded in copper sleeve 300
On, c-type Bourdon tube free end 101 is in flat, its thickness is 0.2~0.3mm, is in self-closing shape by laser welding；Silently
400 are overlapped on the outside of c-type Bourdon tube free end 101, wherein silently 400 overlapped points are apart from 101 side of c-type Bourdon tube free end
Edge 1-2mm, by being welded and fixed.
In the present embodiment, welding uses Sn welding wires, and wherein lead content is less than 0.1%, Cu content≤0.6%, Ag contents
>=4%.
Further, c-type Bourdon tube 100 is made by copper-based or ferrous alloy material, the section of c-type Bourdon tube 100
For oval cross section or flat circular section.
The production method of the Medical C type Bourdon pressure gauge of the present embodiment, comprises the following steps：
Step S101, the copper sleeve and c-type Bourdon tube 100 of environmentally friendly copper material are selected, wherein environmentally friendly copper material lead tolerance is low
In below the mark；
Step S102, ZnCl is configured2Scaling powder aqueous solution, concentration 20g/L, by ZnCl2Scaling powder aqueous solution is coated in ripple
Step in the surface to be welded of pipe fixing end 102；
Step S103, the Sn welding wires of 0.1%, Cu content≤0.6%, Ag content >=4% are less than to c-type ripple using lead content
Step on pipe fixing end 102 to be welded, the workpiece after welding cleans 2min with boiling water, and it is 0.8% that mass fraction is added with boiling water
Ethylene glycol butyl ether, 0.2% polyvinyl alcohol and 1% maleimide；Then workpiece is placed in sink and used
Flowing clear water cleans 5min back and forth, flows the flow control of clear water in 25L/min；
Step S104, the cutting 200 that thickness is 0.2mm is filled in 101 afterbody of c-type Bourdon tube free end cleaned, such as
Shown in Fig. 2 and Fig. 3, the head of cutting 200 is in tip-shape, by hard alloy (such as stainless steel alloy, nickel alloy or other conjunctions
Gold) it is made, the width of cutting 200 is less than or equal to the inner width of c-type Bourdon tube free end 101, and c-type is filled in cutting 200
Bourdon tube free end 101 and reserved 10mm is on the outside；With punching machine by 101 afterbody of c-type Bourdon tube free end flatten, remove workpiece and
Cutting 200；
Step S105, drying and processing is carried out to workpiece, then the temperature control of drying and processing uses laser welder at 200 DEG C
The c-type Bourdon tube free end 101 afterbody welding of flattening is shut；
Step S106, the outside of c-type Bourdon tube free end 101 silently 300 will be welded on using Sn welding wires, boiling water is used after welding
Clean 2min.
A kind of Medical C type Bourdon pressure gauge of the utility model, is obtained by above-mentioned production method.The production method changes
Become after the welding of conventional c bourdon tube pressure gauge directly will silently shut with the welding of c-type Bourdon tube free end, cause scaling powder
In C type Bourdon tube internal residuals, use of the c-type bourdon tube pressure gauge in medical field is influenced.
Claims (5)
- A kind of 1. Medical C type Bourdon pressure gauge, it is characterised in that including copper sleeve (300), c-type Bourdon tube (100) with silently (400), the c-type Bourdon tube (100) includes free end (101) and fixing end (102), c-type Bourdon tube fixing end (102) welding In on copper sleeve (300), c-type Bourdon tube free end (101) is in self-closing shape, and silently (400) are overlapped on c-type Bourdon tube free end (101) outside, by being welded and fixed.
- 2. Medical C type Bourdon pressure gauge according to claim 1, it is characterised in that the c-type Bourdon tube free end (101) it is in flat, its thickness is 0.2~0.3mm.
- 3. Medical C type Bourdon pressure gauge according to claim 2, it is characterised in that the overlapped points of silently (400) Apart from c-type Bourdon tube free end (101) edge 1-2mm.
- 4. Medical C type Bourdon pressure gauge according to claim 3, it is characterised in that the c-type Bourdon tube (100) by Copper-based or ferrous alloy material is made.
- 5. Medical C type Bourdon pressure gauge according to claim 4, it is characterised in that the c-type Bourdon tube (100) Section is oval cross section or flat circular section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721138708.9U CN207223148U (en) | 2017-09-06 | 2017-09-06 | A kind of Medical C type Bourdon pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721138708.9U CN207223148U (en) | 2017-09-06 | 2017-09-06 | A kind of Medical C type Bourdon pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207223148U true CN207223148U (en) | 2018-04-13 |
Family
ID=61860778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721138708.9U Expired - Fee Related CN207223148U (en) | 2017-09-06 | 2017-09-06 | A kind of Medical C type Bourdon pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207223148U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657912B (en) * | 2019-09-20 | 2022-05-06 | 慈溪市普莱斯仪表有限公司 | Gas indicator spring tube and manufacturing method thereof |
-
2017
- 2017-09-06 CN CN201721138708.9U patent/CN207223148U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657912B (en) * | 2019-09-20 | 2022-05-06 | 慈溪市普莱斯仪表有限公司 | Gas indicator spring tube and manufacturing method thereof |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180413 Termination date: 20180906 |
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| CF01 | Termination of patent right due to non-payment of annual fee |