CN202023929U - Low-pressure sealing system applied to segmental type die cores or dies - Google Patents
Low-pressure sealing system applied to segmental type die cores or dies Download PDFInfo
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- CN202023929U CN202023929U CN2011200769754U CN201120076975U CN202023929U CN 202023929 U CN202023929 U CN 202023929U CN 2011200769754 U CN2011200769754 U CN 2011200769754U CN 201120076975 U CN201120076975 U CN 201120076975U CN 202023929 U CN202023929 U CN 202023929U
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Abstract
The utility model relates to a low-pressure sealing system applied to die cores or dies, in particular to a sealing system applied to the joint of the segmental type die cores or dies of a wind blade. The low-pressure sealing system consists of an inner sealing system (1) and an outer low-pressure sealing system. The outer sealing system comprises an air guide system (2), a large sealed space (4), an air pressure measurement system (5), a sealing rubber ring (3) and a pumping system (6). The air guide system (2) comprises at least one air guide groove. The large sealed space (4) comprises at least one sealed container. The air pressure measurement system (5) comprises at least one vacuum meter or air pressure gauge. The air guide groove is isolated from the outside atmospheric pressure by the sealing rubber ring (3). By the difference of pressures inside and outside the sealing rubber ring (3), the sealing rubber ring is deformed to be tightly adhered to the wall of the groove, so that the sealing effect is achieved. The pumping system (6) comprises a vacuum pump, an extraction pipeline and a regulating valve. The low-pressure sealing system can be used for sealing the joint of the die cores or dies (7) of the large-scale wind blade, so that the joint of die core or die equipment is ensured to have no air leakage problem in the vacuum suction injection process of manufacturing the die or the blade by the die cores or the dies, and thus, the suction injection quality is ensured. Meanwhile, in the using process, the low-pressure sealing system is easy to monitor and is convenient to maintain.
Description
Technical field
The utility model relates to a kind of low pressure seal system that is applied to segmented core rod or mould, relates in particular to the sealing system of the joint of a kind of segmented core rod of wind electricity blade or mould.
Background technique
Wind energy conversion system be a kind of be the dynamic power machine of mechanical energy with wind energy transformation, wind energy conversion system is to utilize wind-force to drive the blade rotation, by booster engine the speed of rotation is promoted and impel engine power generation again.
Though China's wind-powered electricity generation industry is started late, but develop very fast, electric motor power recent years all is double growths, and type also upgrades to big unit such as 1.5MW, 2.0MW, 3.0MW by original 850kW, and single length of blade is present more than 60 meters by more than 20 meter original growth also.
Wind electricity blade mainly adopts vacuum suction technological forming at present, and this mould that just needs to produce blade will have extraordinary tightness, and is air tight to guarantee in the blade suction process, guarantees leaf quality.Mould utilizes core rod (being also referred to as former in the engineering) to make, and in order to guarantee the tightness of mould, also is to adopt the moulding of vacuum suction mode in the process of mfg. moulding die, so also needs core surface that extraordinary tightness is arranged.
Because the restriction of processing conditions, the means of segmentation processing are also adopted in core rod processing at present, thus the connection between each section of core rod and how to guarantee the joint air tight be unusual the key link.In addition, along with blade dimensions is growing, the size of mould is huger, is convenient transportation, the method that mould also adopts segmentation to make, this also relates to the problem of joint sealing, and, need upset in the mould using process, the tightness of General System is difficult to keep, and be difficult to find the gas leakage point, can not monitor bad maintenance.
The model utility content
Shortcoming and defect at prior art, the purpose of this utility model provides a kind of low pressure seal system that is applied to core rod or mould, be used for the sealing of large-scale wind electricity blade core rod or mould joint, guarantee that core rod or mould are in the priming by vacuum process of mfg. moulding die or blade, the joint of equipment is air tight, thereby guarantee the quality of mould or blade, monitoring easily in use simultaneously, convenient for maintaining.
In order to solve the problems of the technologies described above, the utility model provides a kind of low pressure seal system that is applied to core rod or mould, comprise internal layer sealing system and outer low pressure seal system, described internal layer sealing system is arranged on described joint, in order to isolate working space and outer low pressure seal system, play the first layer seal action; It is low pressure that described outer low pressure seal system keeps the external pressure of internal layer sealing system, makes working space and isolated from atmosphere.
Preferably, described internal layer sealing system adopts sealing joint strip to constitute or elasticity inflatable seal circle constitutes, because internal layer sealing system both sides pressure reduction is little, is not suitable for the sealing material of O type circle type.
Preferably, described outer low pressure seal system comprises gas directing system, big seal space, barometric surveying system, extract system and sealing rubber ring, and four systems links to each other, and air pressure is identical, and isolated with barometric pressure, and described gas directing system comprises at least one air guide groove; Described big seal space comprises at least one seal container; Described barometric surveying system comprises at least one vacuum gauge or barometer; Sealing rubber ring is isolated described air guide groove and external atmosphere pressure, by the sealing rubber ring inside and outside differential pressure, makes its distortion be close to cell wall, reaches seal action; Described extract system comprises vacuum pump, pump-line and regulating valve.
Preferably, described gas directing system is generally an air guide groove, and space hold is little, and is good with type.Described gas directing system is isolated described internal layer sealing system and external atmosphere pressure fully by the mode of air guide groove.Described gas directing system links to each other with big seal space, keeps low pressure during work always, and described outer sealing system is bled by extract system, keeps described gas directing system and big seal space low pressure, reduces the pressure reduction of described internal layer sealing system both sides, reduces gas leakage.
Preferably, described seal space is generally a big seal container (for example steel drum), increases spatial volume, reduces the gas leakage contributive rate.
Preferably, described barometric surveying system is generally one to two vacuum gauge (or barometer) and constitutes, and links to each other with whole low service system, directly measures low service system air pressure.
Preferably, described extract system mainly is made of pump-line, valve, vacuum pump.
The low pressure seal system that the utility model provides compares with prior art, has following outstanding feature:
1, by the internal layer sealing system working space and outer low pressure seal system are isolated, outer low pressure seal system isolates working space and outer atmosphere, and it is low to reach working space pressure outside gradient, reduces air leakage, the maintenance sealing.
2, in system when operation,, working space is depressurized near vacuum state, and outer low pressure seal system also is reduced to simultaneously near vacuum state, here the pumping speed of extract system is controlled by valve, can guarantee substantially that the pressure decay rate and the working space of outer low pressure seal system is consistent.After treating that the working space low-pressure state is stable, the air pressure of outer low pressure seal system also keeps low pressure stable.After treating that working space work is finished, finish outer low pressure seal system low-voltage state.
3, this double-deck low pressure seal system can high efficiencyly finish seal operation, as long as keep the low-pressure state of outer low pressure seal system, whether than simple one deck leakage efficiency higher (detect this seal leak gas very difficult), and maintenance cost is lower.
Description of drawings
Fig. 1 is the structural representation of low pressure seal provided by the utility model system.
Embodiment
Below in conjunction with accompanying drawing content of the present utility model is described, following description only is exemplary and indicative, should any restriction not arranged to protection domain of the present utility model.
Fig. 1 is the cross-sectional view of low pressure seal provided by the utility model system.
As shown in Figure 1, the low pressure seal system that the utility model provides comprises internal layer sealing system 1 and outer low pressure seal system, and outer low pressure seal system comprises air guide groove 2, O shape rubber ring 3, bulk container 4, vacuum gauge 5, the conduit 6 of bleeding, valve (not shown) and air exhauster (not shown).
Internal layer sealing system 1(is made of sealing joint strip) working space 8 and air guide groove 2 parts of outer low pressure seal system are isolated, play the seal action of first layer.
O shape rubber ring 3 is isolated air guide groove 2 and external atmosphere pressure, by O type rubber ring inside and outside differential pressure, makes its distortion be close to cell wall, reaches seal action.
When working space 8 pressure began to reduce, the pressure of outside low pressure sealing system also reduced along with bleeding, and this process can be controlled by the vacuum gauge of operation interval 8 and the demonstration of the vacuum gauge 5 on the bulk container 4.Because bulk container 4 total volumes are little more many than working space,, control pumping speed by the valve on the bleeding regulating pipeline 6 (not expression in the way) basically and get final product so controlling method is fairly simple.
After the degree of vacuum of working space 8 reached requirement, the degree of vacuum that vacuum gauge 5 shows also kept higher level simultaneously, and target is to keep the lower pressure difference in internal layer sealing system 1 both sides.So just can keep working space 8 in this joint, air tight.
Low pressure seal system of the present utility model is as long as guarantee that the outside low pressure sealing system certain degree of vacuum (requiring different and difference according to working space degree of vacuum), just can guarantee that internal layer sealing system 1 is air tight.
If vacuum gauge 5 shows vacuum degree deficiency, air pressure is low inadequately, illustrates that there is the gas leakage part in the internal layer low service system, or opens big valve increase rate of air sucked in required and keep degree of vacuum, or overhauls.
Owing to there is bulk container 4 to exist, the container size can be regulated, therefore, can determine the size of container according to vacuum requirements and equipment tightness attribute, reach a such purpose: after fastening container 4 evacuating valves in the certain hour, container 4 internal pressures slowly rise, after perhaps stable the bleeding, container 4 internal pressures can keep enough low, low to working space 8 in pressure difference less.
The above only is the description of the utility model mode of execution; should be understood that; because the finiteness of literal expression; and objectively have unlimited concrete structure; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. low pressure seal system, be applied to the segmented core rod or the mould of wind electricity blade, has the joint between described segmented core rod or the mould, it is characterized in that: described low pressure seal system comprises internal layer sealing system and outer low pressure seal system, described internal layer sealing system is arranged on described joint, in order to isolate working space and outer low pressure seal system; It is low pressure that described outer low pressure seal system keeps the external pressure of internal layer sealing system, makes working space and isolated from atmosphere.
2. low pressure seal according to claim 1 system is characterized in that, described internal layer sealing system adopts sealing joint strip or elasticity inflatable seal circle to constitute.
3. low pressure seal according to claim 1 and 2 system, it is characterized in that, described outer low pressure seal system comprises gas directing system, big seal space, barometric surveying system, O type rubber ring and extract system, and described gas directing system comprises at least one air guide groove; Described big seal space comprises at least one seal container; Described barometric surveying system comprises at least one vacuum gauge or barometer; O type rubber ring is isolated described air guide groove and external atmosphere pressure, by O type rubber ring inside and outside differential pressure, makes its distortion be close to cell wall; Described extract system comprises vacuum pump, pump-line and valve.
4. low pressure seal according to claim 3 system is characterized in that, described gas directing system links to each other with big seal space, described outer sealing system is bled by extract system, keep described gas directing system and big seal space low pressure, reduce the pressure reduction of described internal layer sealing system both sides, reduce gas leakage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200769754U CN202023929U (en) | 2011-03-22 | 2011-03-22 | Low-pressure sealing system applied to segmental type die cores or dies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200769754U CN202023929U (en) | 2011-03-22 | 2011-03-22 | Low-pressure sealing system applied to segmental type die cores or dies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202023929U true CN202023929U (en) | 2011-11-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200769754U Expired - Fee Related CN202023929U (en) | 2011-03-22 | 2011-03-22 | Low-pressure sealing system applied to segmental type die cores or dies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202023929U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135182A (en) * | 2011-03-22 | 2011-07-27 | 中国科学院工程热物理研究所 | Low-pressure sealing system applied to sectional form mould core/mould and sealing method thereof |
| CN104142258A (en) * | 2013-05-09 | 2014-11-12 | 中国石油化工股份有限公司 | Core segmented sealing device and application method |
-
2011
- 2011-03-22 CN CN2011200769754U patent/CN202023929U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135182A (en) * | 2011-03-22 | 2011-07-27 | 中国科学院工程热物理研究所 | Low-pressure sealing system applied to sectional form mould core/mould and sealing method thereof |
| CN104142258A (en) * | 2013-05-09 | 2014-11-12 | 中国石油化工股份有限公司 | Core segmented sealing device and application method |
| CN104142258B (en) * | 2013-05-09 | 2016-09-14 | 中国石油化工股份有限公司 | A kind of rock core stagewise sealing device and using method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20200322 |