CN201500709U - Sealing device of metal bellows wave pitch - Google Patents
Sealing device of metal bellows wave pitch Download PDFInfo
- Publication number
- CN201500709U CN201500709U CN2009201762204U CN200920176220U CN201500709U CN 201500709 U CN201500709 U CN 201500709U CN 2009201762204 U CN2009201762204 U CN 2009201762204U CN 200920176220 U CN200920176220 U CN 200920176220U CN 201500709 U CN201500709 U CN 201500709U
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- Prior art keywords
- metal bellows
- salable
- pitch
- hydraulic pump
- waves
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- Expired - Fee Related
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Abstract
The utility model discloses a sealing device of the metal bellows wave pitch. The device comprises a metal bellows, metal bellows plugs, a sealable device and a hydraulic pump, wherein the two ends of the metal bellows are sealed by the metal bellows plugs; the metal bellows of which the two ends are sealed by the metal bellows plugs is arranged in an inner seal space of the sealable device; and the high-pressure liquid is filled in the sealable device by the hydraulic pump. The utility model can protect the inner wall of the metal bellows from being scratched in the encryption process for the wave pitch.
Description
Technical field
The utility model relates to the metal hose production field, particularly relates to a kind of metal bellows pitch of waves encryption device.
Background technology
Metal bellows is widely used in fields such as automatic control and measuring instrument, vacuum technique, mechanical industry, power industry, communications and transportation and atomic energy industry as sensing element, damper element, compensating element,, potted component, valve element and pipeline connecting parts etc.
Metal bellows is flexible, bending easily, elongation, compression (certain angle of bend, the elongation compression factor is all restricted).Metal bellows is manufactured come out after, often need the pitch of waves of metal bellows is encrypted, be in order further to improve the pliability of body sometimes, be to satisfy specific customer requirement sometimes.
Fig. 1 is the structure chart of metal bellows pitch of waves encryption device in the prior art.Referring to Fig. 1, at present, mainly comprise in the metal bellows pitch of waves encryption device: harmonic machine support 101, Duct fixing clamp 102, mobile pipe clamp 103, motor 104, reductor 105, chain 106, metal bellows 107 and plug 108.Utilizing device shown in Figure 1 to carry out metal bellows pitch of waves encrypted process mainly comprises: use a plug to pass metal bellows, the metal bellows that inside is had plug is placed on the harmonic machine support, and distinguishes the two ends of fixing metal bellows with Duct fixing clamp and mobile pipe clamp; According to the pitch of waves of current needs, to rotate by the driven by motor reductor, the move left and right of mobile pipe clamp is controlled in the rotation by reductor and be connected chain on the mobile pipe clamp, realizes the encryption of the metal bellows pitch of waves by the move left and right of mobile pipe clamp.Wherein, the plug of metal bellows inside can limit metal bellows and move vertically when mobile pipe clamp move, thereby guarantees by moving of mobile pipe clamp the pitch of waves of metal bellows to be encrypted.
By above description as can be seen, in the prior art, must be when metal bellows is encrypted at the interspersed plug in the inside of metal bellows.Yet after having used plug, when mobile pipe clamp move left and right, the inwall of metal bellows will inevitably with the plug friction, tend to cause the scuffing of inboard wall of tube body, thereby influence the service life of metal bellows greatly.
The utility model content
In view of this, main purpose of the present utility model is to provide a kind of metal bellows pitch of waves encryption device, so that the inwall of protection metal bellows is not scratched.
In order to achieve the above object, the technical solution of the utility model is achieved in that
A kind of metal bellows pitch of waves encryption device, this device comprises: metal bellows, wavy metal pipe plug, salable device, hydraulic pump, wherein,
The wavy metal pipe plug is used for two sealing with metal bellows;
Salable device is used for placing the metal bellows that two is sealed by the wavy metal pipe plug in the inner sealing space that forms;
Hydraulic pump is used for injecting highly pressurised liquid to salable device.
This device further comprises the package parts that are used to connect described salable device and described hydraulic pump, and these package parts are shut the salable device that inside is placed with metal bellows;
Described hydraulic pump injects highly pressurised liquid by described package parts in described salable device.
Described package parts are flange.
Described wavy metal pipe plug is the rubber plug that is installed with bolt and nut, or is installed with the Polyurethane plug of bolt and nut.
Further comprise relief valve on the described salable device, be used for after the pitch of waves of described metal bellows is encrypted, discharge the inner highly pressurised liquid of described salable device.
Described hydraulic pump is a hydraulic pamp, injects water under high pressure in salable device.
Described salable device is steel pipe or pipe of cement.
Described metal bellows is the endless metal bellows.
This shows, the utlity model has following advantage:
1, as seen, utilize the utility model, metal bellows can be placed in the seal cavity, and two of metal bellows is also sealed, therefore, after in the seal cavity of salable device, injecting highly pressurised liquid, the pitch of waves of metal bellows then can be encrypted under the pressure of highly pressurised liquid, because in this ciphering process, plug of the prior art is not used in the inside of metal bellows, its inside is hollow, therefore, can not cause the inwall of metal bellows to scratch, thereby can not influence the service life of metal bellows, improve the quality of product greatly.
2, when the pitch of waves that utilizes the utility model to carry out metal bellows is encrypted, because what use is highly pressurised liquid, can contact fully with all outer surfaces of metal bellows, therefore can apply uniform pressure to metal bellows, make that metal bellows can sideslip in ciphering process, and the pitch of waves is encrypted evenly.
3, when the pitch of waves that utilizes the utility model to carry out metal bellows is encrypted, when using water under high pressure,, therefore can not pollute metal bellows because water under high pressure is cleaner; And,, therefore, strengthened practicality of the present utility model greatly because the water under high pressure relative price is cheap.
Description of drawings
Fig. 1 is the structure chart of metal bellows pitch of waves encryption device in the prior art.
Fig. 2 is the basic structure schematic diagram of metal bellows pitch of waves encryption device in the utility model.
Fig. 3 is a kind of preferred construction schematic diagram of the present utility model.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, the utility model is described in further detail below in conjunction with drawings and the specific embodiments.
The utility model proposes a kind of metal bellows pitch of waves encryption device.Referring to Fig. 2, this device mainly comprises: metal bellows, wavy metal pipe plug, salable device, hydraulic pump, wherein,
The wavy metal pipe plug is used for two sealing with metal bellows;
Salable device is used for placing the metal bellows that two is sealed by the wavy metal pipe plug in the inner sealing space that forms;
Hydraulic pump is used for injecting highly pressurised liquid to salable device.
As seen, in the utility model device, because metal bellows has been put into a seal cavity, and two of metal bellows is also sealed, therefore, when inject highly pressurised liquid in the sealing space after, the pitch of waves of metal bellows then can be encrypted under the pressure of highly pressurised liquid.
In the utility model, the mode that forms seal cavity in the inside of salable device has a lot, wherein, a kind of preferable implementation is shut the salable device that inside is placed with metal bellows for using package parts, thereby portion forms seal cavity within it, and these package parts also connect salable device and hydraulic pump, make that hydraulic pump can be by these package parts to the inner highly pressurised liquid that injects of salable device.
What above-mentioned package parts were preferable can adopt flange.
In addition, after encrypting at the metal bellows pitch of waves, can discharge by the highly pressurised liquid that salable device is inner, so that can be from the inner metal bellows that takes out after the pitch of waves is encrypted of salable device, on salable device of the present utility model, can further include relief valve, like this, after the pitch of waves of described metal bellows is encrypted, open relief valve and discharge the inner highly pressurised liquid of salable device.
In specific implementation of the present utility model, the wavy metal pipe plug can be for being installed with the rubber plug of bolt and nut, can also be Polyurethane plug of being installed with bolt and nut etc.; Hydraulic pump can be hydraulic pamp, that is to say, what inject in salable device is water under high pressure; Salable device can be steel pipe or pipe of cement etc.
Fig. 3 is a kind of preferred construction schematic diagram of the present utility model.Referring to Fig. 3, in a kind of preferable implementation structure of the present utility model, what the wavy metal pipe plug used is the rubber plug 301 that is installed with bolt and nut, what package parts used is flange 302, what hydraulic pump used is hydraulic pamp 303, what salable device used is thick walled steel tube 304, comprises relief valve 305 on the thick walled steel tube 304.
Utilizing device shown in Figure 3 that metal bellows 306 is carried out the ripple encrypted process mainly comprises:
At first, two rubber plugs 301 that are installed with bolt and nut are filled in two of metal bellows 306 respectively, by tighting a bolt or nut makes rubber plug 301 swell, thereby with two sealing of metal bellows 306;
Secondly, the metal bellows 306 after the sealing of two is put into thick walled steel tube 304 inside; Then, use flange 302 to connect thick walled steel tube 304 and hydraulic pamp 303, and flange 302 is with thick walled steel tube 304 sealings, wherein, referring to Fig. 3, utilize a kind of specific implementation of flange 302 connections and sealing to be: to use two flanges 302, at the one section steel pipe 1 of burn-oning near the end of the flange 302 of hydraulic pamp 303, require the axle center of steel pipe 1 concentric with flange 302, and, screw thread will be attacked on the steel pipe 1; Water injection valve 3 is contained on the steel pipe 1, and the other end of water injection valve 3 is loaded onto steel pipe 2, and high-voltage tube 4 links up steel pipe 2 and hydraulic pamp 303, in the place of the close flange 302 in the end of thick walled steel tube 304, thick walled steel tube 304 is injected flanges burn-on;
At last, close relief valve 305, at this moment, the inside of thick walled steel tube 304 has then formed seal cavity; Then hydraulic pamp 303 runnings, open water injection valve 3, water under high pressure injects in the thick walled steel tube 304 by high-voltage tube 4, steel pipe 1, steel pipe 2 and flange 302, check current pressure according to the Pressure gauge on the hydraulic pamp 303, after reaching predefined force value, stop to inject water under high pressure, in thick walled steel tube 304 inside, water under high pressure contacts with the outer surface of metal bellows 306 is full and uniform, metal bellows 306 outer surface everywhere is subjected to uniform pressure, since metal bellows 306 inner hollow, therefore, under the effect of water under high pressure pressure, its pitch of waves is encrypted, and encrypts evenly; After finishing the encryption of metal bellows 306 pitch of waves, open relief valve 305, the water under high pressure of thick walled steel tube 304 inside is discharged by relief valve 305, afterwards, then can open flange 302 and take out the encrypted metal bellows 306 of the pitch of waves.
Need to prove, in the utility model, when using the hydraulic pump such as hydraulic pamp, after reaching predefined force value, will stop to inject, well known to a person skilled in the art, the relation between the final pitch of waves of force value and metal bellows meets following computing formula:
P＝σ0.2％×s×m×t
2/w
2
Wherein, σ 0.2% represents yield point (metal bellows can only carry out strain during less than yield point, greater than yield point permanent deformation then), and the material of the metal bellows that can encrypt is as required searched technical manual and determined its yield point numerical value; S is the deformation coefficient, and value is between 2 to 4 usually; M is the number of plies of metal bellows; T is the wall thickness of metal bellows, and w is the wave height (crest is to the distance of trough) of metal bellows.Like this, according to the aforementioned calculation formula, then can calculate and metal bellows be encrypted wave height when being w, required pressure value P.
Utilize the utility model, can carry out the pitch of waves to the metal bellows of any one type and encrypt.Preferable, the metal bellows in the utility model is the endless metal bellows, that is to say, in a kind of preferable realization of the present utility model, what finish is that the pitch of waves of endless metal bellows is encrypted.
In a word, the above is preferred embodiment of the present utility model only, is not to be used to limit protection domain of the present utility model.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. metal bellows pitch of waves encryption device is characterized in that this device comprises: metal bellows, wavy metal pipe plug, salable device, hydraulic pump, wherein,
The wavy metal pipe plug is used for two sealing with metal bellows;
Salable device is used for placing the metal bellows that two is sealed by the wavy metal pipe plug in the inner sealing space that forms;
Hydraulic pump is used for injecting highly pressurised liquid to salable device.
2. device according to claim 1 is characterized in that this device further comprises the package parts that are used to connect described salable device and described hydraulic pump, and these package parts are shut the salable device that inside is placed with metal bellows;
Described hydraulic pump injects highly pressurised liquid by described package parts in described salable device.
3. device according to claim 2 is characterized in that, described package parts are flange.
4. device according to claim 1 is characterized in that, described wavy metal pipe plug is the rubber plug that is installed with bolt and nut, or is installed with the Polyurethane plug of bolt and nut.
5. device according to claim 1 is characterized in that, further comprises relief valve on the described salable device, is used for after the pitch of waves of described metal bellows is encrypted, and discharges the inner highly pressurised liquid of described salable device.
6. device according to claim 1 is characterized in that described hydraulic pump is a hydraulic pamp, is used for injecting water under high pressure to salable device.
7. device according to claim 1 is characterized in that, described salable device is steel pipe or pipe of cement.
8. according to any described device in the claim 1 to 7, it is characterized in that described metal bellows is the endless metal bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201762204U CN201500709U (en) | 2009-09-03 | 2009-09-03 | Sealing device of metal bellows wave pitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201762204U CN201500709U (en) | 2009-09-03 | 2009-09-03 | Sealing device of metal bellows wave pitch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201500709U true CN201500709U (en) | 2010-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201762204U Expired - Fee Related CN201500709U (en) | 2009-09-03 | 2009-09-03 | Sealing device of metal bellows wave pitch |
Country Status (1)
| Country | Link |
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| CN (1) | CN201500709U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107096821A (en) * | 2017-05-16 | 2017-08-29 | 中山市睿望达精密科技有限公司 | Gearbox sleeve pipe manufacturing process |
-
2009
- 2009-09-03 CN CN2009201762204U patent/CN201500709U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107096821A (en) * | 2017-05-16 | 2017-08-29 | 中山市睿望达精密科技有限公司 | Gearbox sleeve pipe manufacturing process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20140903 |
|
| EXPY | Termination of patent right or utility model |