CN103711683A - Diaphragm sheet for supercritical diaphragm pump - Google Patents
Diaphragm sheet for supercritical diaphragm pump Download PDFInfo
- Publication number
- CN103711683A CN103711683A CN201410019759.4A CN201410019759A CN103711683A CN 103711683 A CN103711683 A CN 103711683A CN 201410019759 A CN201410019759 A CN 201410019759A CN 103711683 A CN103711683 A CN 103711683A
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- China
- Prior art keywords
- diaphragm
- barrier film
- connection rod
- connecting rod
- sheet
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Abstract
The invention provides a diaphragm sheet for a supercritical diaphragm pump. The diaphragm sheet is formed by combining a diaphragm, a bearing back plate and a connection rod group, wherein a connection rod is fixedly connected with a diaphragm center. The diaphragm sheet is characterized in that a diaphragm cross section of the diaphragm pump adopts a design of two M-shaped blow shapes with a center radian; the bearing back plate is designed on the connection rod; an arc groove in the back plate fits in the bottom diaphragm radian of the diaphragm sheet; the arc groove and the diaphragm sheet are in tight contact. In a working process, a slurry transmission pressure is borne by the bearing back plate and the connection rod; the extension amount of the diaphragm sheet is very small in the entire working process; the circumference part of the diaphragm is fixedly arranged on the cylinder wall of the diaphragm pump; a flange is arranged at one end of the connection rod and is fixedly arranged on a guide push rod by a screw so as to ensure the movement track, and the other end of the connection rod is adhered to the center of the diaphragm or is in threaded connection with the center of the diaphragm; the diaphragm moves forwards and backwards by means of being adhered against the connection rod and the bearing back plate on the connection rod; the whole diaphragm uses a hole-free design. The diaphragm sheet provided by the invention removes the larger stress of the diaphragm, which is borne in working, and has the advantages of good sealing property and high intensity. Furthermore, the service life of the diaphragm is greatly prolonged.
Description
Technical field
The present invention relates to a kind of mechanical diaphragm type metering pump, be specially the matching used diaphragm that bears the boiler dosing dosing pump of supercritical pressure of power station supercritical turbine generator group.
Background technique
That diaphragm metering pump is conventionally carried is inflammable, explosive, hypertoxic, deep-etching and active liquid, because of its zero leakage, and high measuring accuracy, low noise, is widely used in the industry-by-industries such as oil, chemical industry, pharmacy, light textile, power station.
Diaphragm is most important and the most flimsy part in diaphragm pump, and the damage of diaphragm, especially crackle and perforation, by causing degenerating and cannot running well of metering pump performance, even can bring very serious economic loss.
Conventional autoclave diaphragm metering pump, discharge pressure is generally in 10 MPa left and right, for conventional boiler dosing, and large-scale power station especially supercritical unit power plant dosing pressure reach 25 MPas, at present often there is the phenomenon of tearing of diaphragm plate in the diaphragm in this type of Hydraulic Diaphragm Metering Pump, causes spillage accident and affect normal production, as continued to use, need often to change diaphragm, maintenance expenses is higher.
Summary of the invention
The object of the invention is to improve reliability and the Security of supercritical pressure turbine assembly complete equipment diaphragm pump, by the diaphragm of overcritical diaphragm pump is carried out to deep research, diaphragm structure to diaphragm pump is optimized design, designed supercritical steam turbine unit diaphragm pump critical component diaphragm, solved at supercritical unit septation pump and carried the easy breakdown problem of Sealing barrier film occurring in the medium of elevated pressures, the diaphragm of design had both had good sealing, can bear elevated pressures again, greatly extended the working life of the diaphragm of diaphragm pump, reduced maintenance expenses.
To achieve these goals, technological scheme of the present invention is as follows.
The diaphragm of designed diaphragm pump, by barrier film, the compositions such as pressure-bearing back of the body dish and connecting rod, connecting rod is fixed in diaphragm center, it is characterized in that adopting bowl-type design at the crucial Sealing barrier film of diaphragm pump, its transverse section is by two bowl-shape designs of M type with certain radian.On connecting rod, designed a pressure-bearing back of the body dish, when diaphragm pump is worked, slurries act on most of pressure on barrier film and are born by pressure-bearing back of the body dish and connecting rod after barrier film, and diaphragm amount of tension in whole working procedure is minimum.Thereby assurance barrier film is worked not breakdown and tears under supercritical pressure, guarantees the continuous normal operation of diaphragm pump.
The circumferential section of barrier film is fixed on the cylindrical shape casing wall of diaphragm pump, and a pressure-bearing back of the body dish is housed on connecting rod, and back of the body dish has an arc groove and barrier film radian to adapt, and with barrier film close contact.
Connecting rod one end is flanged, is screwed on guiding push rod to guarantee running orbit, and the other end is bonded at diaphragm center, makes the barrier film can transmission, by the pressure-bearing back of the body dish on connecting rod, barrier film is travelled forward.Connecting rod and barrier film stick together, and barrier film adopts atresia design, to guarantee the leakproofness of barrier film.
The pressure-bearing back of the body coils thick 2-3cm, and the thick 1-3mm of barrier film adopts thermostable fluorine rubber material.The present invention can reduce the Inventory of Spare Parts of user to this diaphragm, saves spare part fund.
Present device is simple in structure, easy to operate, and recondition expense is low, has reduced operator's labor intensity.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the structural representation of barrier film of the present invention, and wherein, Fig. 2 (A) is barrier film plan view, and Fig. 2 (B) is barrier film cross sectional view.
Fig. 3 is the generalized section of connecting rod of the present invention, and wherein, 7 is back of the body dish partial enlarged drawing.
Fig. 4 is the plan view of connecting rod of the present invention.
Embodiment
In conjunction with Figure of description, the present invention will be further described, and in Fig. 1 to Fig. 4,1 is that barrier film, 2 is that diaphragm pump casing wall, 3 is that connecting rod flange, 4 is that connecting rod, 5 is that pressure-bearing back of the body dish, 6 is the arc groove of pressure-bearing back of the body dish
In the present invention, overcritical diaphragm of diaphragm pump is by barrier film 1, the parts such as pressure-bearing back of the body dish 5 and connecting rod 4 form, it is characterized in that connecting rod 4 bondings or adopt being threaded on barrier film 1, pressure-bearing back of the body dish has been housed on the connecting rod of diaphragm pump, the thick about 2-3cm of pressure-bearing back of the body dish, adopts Ordinary Steel material, surface finish.
Pressure-bearing back of the body dish and connecting rod can be forged into one, also can sell or be rigidly attached on connecting rod.Back of the body dish diameter is than the little 3-5mm of diaphragm pump diameter of cylinder, back of the body dish working surface circumference rounding.
The position that pressure-bearing back of the body dish contacts with barrier film has Radius R=25～30mm arc groove and separator bottom diaphragm radian to adapt, during installation and barrier film energy close proximity touch.Flanged or the screw thread of the connecting rod the other end, is fixed on diaphragm pump guiding push rod to guarantee running orbit with screw or screw thread.Barrier film section adopts the bowl-shape design of M type, and section circular arc portion radian is 40～60 radians, and radius is about 25mm, for guaranteeing barrier film leakproofness, and the design of diaphragm seal position atresia.Thick 1～the 3mm of barrier film, adopts thermostable fluorine rubber material.The outer of barrier film is fixed in diaphragm pump cylinder body, by the pressure-bearing back of the body dish on connecting rod, barrier film is travelled forward, and prevents that barrier film from producing excessive tensile buckling.
Claims (2)
1. overcritical diaphragm of diaphragm pump is by barrier film, pressure-bearing back of the body dish and connecting rod form, connecting rod is fixed in diaphragm center, it is characterized in that being equipped with pressure-bearing back of the body dish on the connecting rod of diaphragm pump, the design that back of the body dish and position, barrier film connecting part have an arc groove and diaphragm bottom film sheet radian to adapt, and close proximity is tactile, back of the body dish diameter is than the little 3～5mm of diaphragm pump diameter of cylinder; Barrier film section according to claim 1 adopts two bowl-shape designs of M type with certain radian, and the pressure-bearing back of the body coils thick 2～3cm, and the thick 1-3mm of barrier film adopts thermostable fluorine rubber material.
2. barrier film according to claim 2 adopts atresia design, and intermediate portion is bonded at or adopts screw thread to be connected on connecting rod, and on connecting rod, the other end and diaphragm pump guiding push rod adopt flange to be rigidly connected, and by connecting rod and pressure-bearing back of the body dish, make barrier film to forward and backward motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410019759.4A CN103711683A (en) | 2014-01-17 | 2014-01-17 | Diaphragm sheet for supercritical diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410019759.4A CN103711683A (en) | 2014-01-17 | 2014-01-17 | Diaphragm sheet for supercritical diaphragm pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103711683A true CN103711683A (en) | 2014-04-09 |
Family
ID=50404943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410019759.4A Pending CN103711683A (en) | 2014-01-17 | 2014-01-17 | Diaphragm sheet for supercritical diaphragm pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103711683A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736327A (en) * | 2014-12-10 | 2016-07-06 | 西安航空动力控制科技有限公司 | Novel oil cavity diaphragm for fuel diaphragm pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120100016A1 (en) * | 2010-10-25 | 2012-04-26 | Coavis | Fuel pump module for damping vibration |
| CN202746177U (en) * | 2012-04-08 | 2013-02-20 | 杭州大潮石化设备有限公司 | Multiple-curved-surface membrane protection plate |
| CN202954947U (en) * | 2012-11-19 | 2013-05-29 | 浙江爱力浦泵业有限公司 | Combined diaphragm for metering pump |
| CN203214295U (en) * | 2012-12-28 | 2013-09-25 | 上海绩优机电设备有限公司 | Diaphragm of diaphragm pump |
-
2014
- 2014-01-17 CN CN201410019759.4A patent/CN103711683A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120100016A1 (en) * | 2010-10-25 | 2012-04-26 | Coavis | Fuel pump module for damping vibration |
| CN202746177U (en) * | 2012-04-08 | 2013-02-20 | 杭州大潮石化设备有限公司 | Multiple-curved-surface membrane protection plate |
| CN202954947U (en) * | 2012-11-19 | 2013-05-29 | 浙江爱力浦泵业有限公司 | Combined diaphragm for metering pump |
| CN203214295U (en) * | 2012-12-28 | 2013-09-25 | 上海绩优机电设备有限公司 | Diaphragm of diaphragm pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736327A (en) * | 2014-12-10 | 2016-07-06 | 西安航空动力控制科技有限公司 | Novel oil cavity diaphragm for fuel diaphragm pump |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140409 |