CN209494692U - The hydraulic guiding of super-pressure diaphragm type compressor seals film head - Google Patents
The hydraulic guiding of super-pressure diaphragm type compressor seals film head Download PDFInfo
- Publication number
- CN209494692U CN209494692U CN201920055172.7U CN201920055172U CN209494692U CN 209494692 U CN209494692 U CN 209494692U CN 201920055172 U CN201920055172 U CN 201920055172U CN 209494692 U CN209494692 U CN 209494692U
- Authority
- CN
- China
- Prior art keywords
- oil
- cylinder cap
- pressure
- film head
- diaphragm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Compressor (AREA)
- Reciprocating Pumps (AREA)
Abstract
The utility model discloses a kind of hydraulic guidings of super-pressure diaphragm type compressor to seal film head, including cylinder cap, diaphragm, oil distribution casing and cylinder body, further includes stuffing box and the main nut that matches with stuffing box；The cylinder body is inverted "convex" shape, is matched with filler lower box part；The groove for accommodating oil distribution casing and diaphragm is equipped on cylinder body top, the depth of groove is less than the sum of oil distribution casing and the height of diaphragm；It is equipped with oil duct at the middle part of cylinder body, plunger is equipped in oil duct, plunger is connected with the crankshaft of compressor；The cylinder cap is equipped with air flue, and air flue is connected with air entry and exhaust outlet respectively, and air flue lower ending opening is below cylinder cap；It is additionally provided with pressure oil-in in cylinder cap side, cylinder cap and main nut, which cooperate, above cylinder cap is equipped with pressure oil export at gap, pressure oil-in is connected with pressure oil export；Sealing ring is equipped at cylinder cap and main nut cooperation gap.Solve the problems, such as that the uniform assembly of bolt difficult arrangement, unbalance stress is more complex in the prior art.
Description
Technical field
The utility model belongs to compressor arrangement technical field, and in particular to a kind of hydraulic guidance of super-pressure diaphragm type compressor
Formula seals film head.
Background technique
The film head of existing diaphragm type compressor mainly constitutes (such as Fig. 1 by cylinder cap, diaphragm, oil distribution casing, cylinder body, bolt 12 etc.
With shown in Fig. 2).Film head is sealed using tools for bolts ' pretension, and cylinder cap and oil distribution casing are by bolt arrangement with higher pretightning force by diaphragm
It is clipped in the middle.In compressor operation in order to guarantee that compressed gas empties completely, hydraulic oil lateral pressure needs higher than gas side pressure
10%-20%, when pressure at expulsion is higher, there are higher hydraulic pressures between diaphragm and cylinder body.According to sealing principle, in order to protect
Card film head is not revealed, and the pretightning force on bolt not only needs to offset high pressure gas and high pressure oil to cylinder cap, diaphragm, oil distribution casing
The separating force of generation, it is also necessary to guarantee that each sealing surface can generate enough flexible deformations, so that the small peak valley quilt of seal clearance
It flattens, gas is made not have enough channels of leaking.
Super-high pressure compressor refers to that air pressure, oil pressure all reach the diaphragm type compressor of 100Mpa or more, super-high pressure compressor
Due to pressure height, required pretightning force will also be accordingly increased, if using traditional film header structure, it will following technology occur and ask
Topic:
1. bolt difficult arrangement: for the pretightning force needed for meeting, the quantity of bolt will increase, and specification is larger.Bolt mistake
When more, it certainly will need to expand the diameter of cylinder cap, in order to guarantee to have enough rigidity after diameter increase, cylinder cap thickness is also required to increase
Add, so that film head is heavy, waste of material will be generated, overhaul the problems such as difficulty, space hold, in some instances it may even be possible to because of required bolt mistake
It can not mostly and at all arrange.
2. discontinuity: using bolt fastening, it is larger to inevitably result in fastening force at bolt location, and bolt and bolt
Intermediate region fastening force it is smaller, cause to need bigger pretightning force to compensate it when design, increase design difficulty.Using
When more bolt fastenings, because that can not pre-tighten simultaneously, fastening force cannot be guaranteed identical on every bolt, part will be caused to pre-tighten excessive
Or it is insufficient, hidden danger is brought to compressor safe operation.
3. assembling more complex: traditional design, bolt quantity is more, and pretightning force is larger, to guarantee that pretightning force is as uniform as possible,
It needs in certain sequence, to pre-tighten that process is relatively complicated, and large labor intensity may also need hydraulic to suppress the spies such as tool when assembling and disassembling bolt
Different tooling could be installed, so that assembly time is longer, increase time between overhauls(TBO) and use cost.
This structure thoroughly solves the above problem.
Utility model content
The purpose of this utility model is: a kind of hydraulic guiding sealing film head of super-pressure diaphragm type compressor is provided, to solve
The problems of the prior art.
The technical solution of the utility model is: a kind of hydraulic guiding sealing film head of diaphragm type compressor, including cylinder cap, film
Piece, oil distribution casing and cylinder body, it is characterised in that: further include stuffing box for receiving above-mentioned component and matched with stuffing box
Main nut；The cylinder body is inverted "convex" shape, is matched with filler lower box part；It is equipped on cylinder body top and accommodates oil distribution casing and film
The depth of the groove of piece, groove is less than the sum of oil distribution casing and the height of diaphragm；It is equipped with oil duct at the middle part of cylinder body, is set in oil duct
There is plunger, plunger is connected with the crankshaft of compressor；The cylinder cap be equipped with air flue, air flue respectively with air entry and exhaust outlet phase
Connection, air flue lower ending opening is below cylinder cap；It is additionally provided with pressure oil-in in cylinder cap side, cylinder cap and main nut above cylinder cap
Cooperate and be equipped with pressure oil export at gap, pressure oil-in is connected with pressure oil export；Cooperate gap in cylinder cap and main nut
Place is equipped with sealing ring.
It is further: opening is equipped with below stuffing box.
It is further: the flange matched with body is equipped with below stuffing box.
It is further: the opening matched with air entry, exhaust outlet, pressure oil-in is respectively equipped on stuffing box.
It is further: to be equipped with inlet valve at air entry, be equipped with exhaust valve in exhaust ports.
Compared with conventional film head, the beneficial effect of guiding sealing film head is:
1, the sealed pressure of guiding sealing film head can meet superelevation press mold head by the oil pressure cntrol being injected into gap
Force request is pre-tightened, breaches and brings the limitation to the design of film head because of high pretightening force, and is controlled flexible.In the change for encountering compressor
Parameter operation, Transformation of Unit etc. have very strong superiority when needing to change the case where film head pretightning force (traditional structure is limited by spiral shell
The working strength of bolt material is difficult to improve the pretightning force of original film head).
2, the stuffing box hydraulic fixing of guiding sealing film head tubular replaces the bolt arrangement of conventional film head, to space
Occupancy is substantially reduced, and meets the compact-sized design style of diaphragm type compressor.As shown in figure 3, two kinds of film heads of identical parameters, draw
Conduction seals film head and is reduced by about 30% than conventional film head volume.
The pretightning force of conventional film head is applied by bolt, under the premise of guaranteeing that material is not destroyed, what bolt can apply
Maximum pretightning force, the minimum sectional area (such as Fig. 3) depending on bolt.And " the guidance pressure that guiding sealing film head passes through hydraulic oil
Power " applies pretightning force, and the maximum pretightning force applied depends on the annular cross-sectional area of stuffing box, the annular cross-sectional area ratio of stuffing box
The smallest cross-section area of bolt is much higher to the utilization rate in space, and namely guiding seals the lesser key of film head body product for this.
3, the used bolt specification of conventional film head is bigger, and the distance between bolt and sealing surface are remoter, and cylinder cap just needs more
Big thickness guarantees that it has enough intensity, and the guide pressure of guiding sealing film head is applied to forever right above cylinder cap,
The thickness of cylinder cap and main nut need to only meet relevant pressure grade, will not add additional thickness because of reasons in structure.Into one
Step saves space and material.
4, when film head uses bolt fastening, in super-pressure, the specification of bolt is usually larger, is needed at this time using liquid
Nut is pressed, is fastened by suppressing tool.It, need to be first by each spiral shell in assembling process in order to guarantee sealing surface uniform force
After bolt is packed into bolt hole, according to sequence is specifically tightened, divide four-wheel to hydraulic spiral shell with 10%, 40%, 70%, 100% pressure of suppressing
Mother suppresses, and every wheel is spaced 1 hour, and installation effectiveness is extremely low, and guiding is used to seal film head, it is only necessary to first twist main nut
After upper (being not required to any pretightning force, be screwed to suitable position), the hydraulic oil system of external oil pump or molding machine itself is connected, only
Need once mounting with regard to achievable.It is time saving and energy saving, and sealing surface stress is more more uniform than conventional film, and sealing effect is more preferably.
Detailed description of the invention
Fig. 1 is existing structure schematic diagram；
Fig. 2 is existing structure broken section total figure；
Fig. 3 is the utility model Standard schematic diagram；
Fig. 4 is the utility model schematic structural cross-sectional view；
Fig. 5 is the utility model structure and existing structure pressure area contrast schematic diagram；
Fig. 6 is the utility model structure and existing structure volume vs schematic diagram.
Number explanation in figure: 1 be main nut, 2 be sealing ring, 3 be stuffing box, 4 be cylinder cap, 5 be diaphragm, 6 be oil distribution casing,
7 it is cylinder body, 8 be plunger, 9 be pressure oil-in, 10 be air entry, 11 be exhaust outlet, 12 is bolt.
Specific embodiment
It is as shown in figures 1 to 6 the hydraulic guiding sealing film head of the utility model super-pressure diaphragm type compressor, including cylinder cap 4,
Diaphragm 5, oil distribution casing 6 and cylinder body 7, the structure and function of above-mentioned component with it is existing essentially identical；It further include for receiving above-mentioned portion
The stuffing box 3 of part and the main nut 1 for each component in hitch box matched with stuffing box；From top to bottom distinguish in stuffing box
It is cylinder cap, diaphragm, oil distribution casing and cylinder body, the cylinder body is inverted "convex" shape, is matched with the limiting stand of filler lower box part, is risen
To the effect of limit；The groove for accommodating oil distribution casing and diaphragm is equipped on cylinder body top, groove plays the role of accommodating above-mentioned component,
To prevent above-mentioned component to be displaced radially, depth be greater than the height of oil distribution casing and be less than oil distribution casing and diaphragm height it
With；Meanwhile the space (namely whole space) of groove part is separated into two parts by diaphragm, top is air chamber, lower part
For oil pocket；It is equipped with the oil duct being connected with oil pocket at the middle part of cylinder body, plunger 8, the song of plunger and compressor are equipped in oil duct
Axis is connected, and similar piston is the same, moves back and forth in oil duct under the drive of crankshaft, to realize the variation of oil pressure；It is described
Cylinder cap is equipped with air flue, and air flue is respectively communicated with air chamber and cylinder air entry 10, air chamber and cylinder exhaust port 11, air flue lower end
Opening matches with diaphragm below cylinder cap, i.e., is connected with air chamber；It is additionally provided with pressure oil-in 9 in cylinder cap side, is led to
It crosses oil pipe to be connected with host or oil pump, can also be connected with oil pocket；It is equipped with pressure oil export in the top of cylinder cap, outlet is located at
At gap between cylinder cap and main nut mating surface, pressure oil-in is connected with pressure oil export by oil duct；Cylinder cap with
Main nut, which cooperates, is equipped with sealing ring 2 at gap, sealing ring outer is matched with stuffing box, and top is matched with main nut, lower part
It is matched with cylinder body, when pressure oil enters in gap from pressure oil-in, under the action of oil pressure, cylinder body is mobile very to end
Small distance, sealing ring ensure that oil therein does not overflow, to persistently generate downward pressure to cylinder body.
It is preferred: opening to be equipped with below stuffing box, so that plunger is connected with the crankshaft of body.
It is preferred: the flange matched with body to be equipped with below stuffing box, stuffing box is connected by flange with body.
It is preferred: the opening matched with air entry, exhaust outlet, pressure oil-in etc. to be respectively equipped on stuffing box, with reality
Existing corresponding component and external connection.
It is preferred: to be equipped with inlet valve at air entry, be equipped with exhaust valve in exhaust ports.
The course of work of the utility model is as follows: stuffing box being screwed on body, plunger is connect with crankshaft, by cylinder
Body, oil distribution casing, diaphragm and cylinder cap are sequentially loaded into inside stuffing box, and main nut is screwed in, and are fastened and are locked, then install connection accordingly
Component.Simple and convenient, high-efficient, good reliability is installed.
When in use, when crankshaft drives plunger operation, when oil pocket high pressure, also there is high pressure oil entrance in pressure oil-in, and
Pressure is identical as the pressure of oil pocket, to make sealed reliable.
In the present solution, used be sealed into guiding sealing, guiding sealing is also low into formula structure, and guidance field can
To be arranged in below cylinder body, guide pressure will pass through the transmitting of cylinder body and oil distribution casing, pretightning force is applied on diaphragm formed it is close
Envelope, the structure can reach same effect.
The beneficial effects of the utility model are: the utility model diaphragm type compressor film header structure (diaphragm type compressor film head,
Hereinafter referred to as film head), conventional film header structure is avoided more under super-pressure operating condition, the use of big sized bolt, to reduce
Film head body product, structure limits caused by breaching film head because of high pressure at expulsion, and the structure also has control spirit
It lives, assemble the advantages that simple.
In order to solve the above technical problem present in superelevation press mold head, the utility model patent has studied a kind of " guidance
The film head of formula sealing " structure is thoroughly solved instead of traditional structure for applying pretightning force by more, large diameter bolt
The problem of space layout, and the manufacturing cost and use cost for improving reliability of structure, reducing film head.
The scheme of the utility model patent increases new construction " stuffing box " after the bolt arrangement for cancelling cylinder cap, cylinder body.
It mainly constitutes (as shown in Figure 3) by the cabinet of tubular and main nut, and cylinder body, oil distribution casing, diaphragm, cylinder cap are packed into stuffing box case
Then main nut is screwed by body, cylinder body lower end is fixed by filler box body, and main nut lower end will exist between cylinder cap pre-tightens sealing
Gap generates high pressure oil by diaphragm type compressor itself oil system or external oil pump, is injected into the gap, high pressure oil will be in cylinder
The side of covering generates " guide pressure ", so that cylinder cap and diaphragm, between diaphragm and oil distribution casing, generate enough fastening forces, to guarantee
It does not reveal.
When guiding seals the assembly of film head, by cylinder body, oil distribution casing, diaphragm, cylinder cap successively from filler cabinet upper end opening
It is packed into and passes through positioning key and seam allowance and axial and circumferential positioning is carried out to gray iron therein, sealing ring is then packed into cylinder
End is covered, after assembling, by main nut being threaded into from filler cabinet upper end, main nut seam allowance is screwed onto and stuffing box is shown consideration for and closed
, high pressure oil connector is then screwed into cylinder body, and connect with molding machine itself oil system or external oil pump, passes through hydraulic system
Preload pressure is applied to film head, so far assembly finishes.
In order to guarantee that sealing surface has pretightning force, the guidance area and guide pressure of cylinder cap top clearance need to be calculated.
When generating the mode of guide pressure using hydraulic oil system.After the oil pressure in compressor is established, guiding
Region can reach pressure balance.However, guide pressure will not be fluctuated as membrane pressure machine hydraulic system, because in pilot line
Check-valves is installed.Check-valves guarantees that guide pressure is equal to maximum hydraulic pressure value, i.e. hydraulic pressure relief valves (bleeder valve) setting value.At this
In class film head, because the active area of guide pressure is greater than the area of film head membrane cavity, it can produce enough sealing fastenings
Power.
When generating the mode of guide pressure using external oil pump, after oil pump generates the guide pressure of setting, guidance field
It is isolated by valve.Pressure will be kept constant, and not need to correct.In this kind of film head, since the guide pressure of setting can be greater than most
Big hydraulic pressure value, therefore the active area of guide pressure does not need to be greater than membrane cavity area.
The cylinder cap of guiding sealing film head also needs to make a change, since guide pressure and main nut are above cylinder cap, so
The port direction of cylinder cap is taken over so as to air valve and is connected by being axially changed to radial direction.
Claims (5)
1. a kind of hydraulic guiding of super-pressure diaphragm type compressor seals film head, including cylinder cap, diaphragm, oil distribution casing and cylinder body, special
Sign is: further including stuffing box for receiving above-mentioned component and the main nut matched with stuffing box；The cylinder body is to fall
"convex" shaped is matched with filler lower box part；The groove for accommodating oil distribution casing and diaphragm is equipped on cylinder body top, the depth of groove is small
In the sum of oil distribution casing and the height of diaphragm；It is equipped with oil duct at the middle part of cylinder body, plunger is equipped in oil duct, plunger and compressor
Crankshaft is connected；The cylinder cap is equipped with air flue, and air flue is connected with air entry and exhaust outlet respectively, and air flue lower ending opening is in cylinder
Lid lower section；It is additionally provided with pressure oil-in in cylinder cap side, cylinder cap and main nut, which cooperate, above cylinder cap is equipped with pressure oil at gap
Outlet, pressure oil-in is connected with pressure oil export；Sealing ring is equipped at cylinder cap and main nut cooperation gap.
2. the hydraulic guiding of super-pressure diaphragm type compressor according to claim 1 seals film head, it is characterised in that: stuffing box
Lower section is equipped with opening.
3. the hydraulic guiding of super-pressure diaphragm type compressor according to claim 1 seals film head, it is characterised in that: stuffing box
Lower section is equipped with the flange matched with body.
4. the hydraulic guiding of super-pressure diaphragm type compressor according to claim 1 seals film head, it is characterised in that: stuffing box
On be respectively equipped with the opening matched with air entry, exhaust outlet, pressure oil-in.
5. the hydraulic guiding of super-pressure diaphragm type compressor according to claim 1 seals film head, it is characterised in that: in air-breathing
It is equipped with inlet valve at mouthful, is equipped with exhaust valve in exhaust ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920055172.7U CN209494692U (en) | 2019-01-14 | 2019-01-14 | The hydraulic guiding of super-pressure diaphragm type compressor seals film head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920055172.7U CN209494692U (en) | 2019-01-14 | 2019-01-14 | The hydraulic guiding of super-pressure diaphragm type compressor seals film head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209494692U true CN209494692U (en) | 2019-10-15 |
Family
ID=68155215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920055172.7U Active CN209494692U (en) | 2019-01-14 | 2019-01-14 | The hydraulic guiding of super-pressure diaphragm type compressor seals film head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209494692U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538451A (en) * | 2019-01-14 | 2019-03-29 | 沈阳远大压缩机有限公司 | The hydraulic guiding of super-pressure diaphragm type compressor seals film head |
-
2019
- 2019-01-14 CN CN201920055172.7U patent/CN209494692U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538451A (en) * | 2019-01-14 | 2019-03-29 | 沈阳远大压缩机有限公司 | The hydraulic guiding of super-pressure diaphragm type compressor seals film head |
| CN109538451B (en) * | 2019-01-14 | 2024-03-26 | 沈阳远大压缩机有限公司 | Hydraulic guide type sealing membrane head of ultrahigh pressure diaphragm compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201560998U (en) | Hydraulic oil cylinder with novel guide sleeve structure | |
| CN100413612C (en) | Rotary shell part hydraulic expansion integrating device | |
| CN109538451A (en) | The hydraulic guiding of super-pressure diaphragm type compressor seals film head | |
| CN209494692U (en) | The hydraulic guiding of super-pressure diaphragm type compressor seals film head | |
| CN106763861B (en) | Pneumatic bellows bellows-type hydraulic packing ball valve | |
| CN110578732B (en) | Energy storage type hydraulic cylinder with built-in welded piston rod | |
| CN211116146U (en) | Valve regulating mechanism of steam turbine | |
| CN203258083U (en) | Piston-type zero-leakage cut-off valve | |
| CN205841804U (en) | A kind of heat radiating type Double-clack regulation cut-off type is to idle discharge air valve | |
| CN107044371A (en) | A kind of fuel injector sealing structure and installation method for cylinder head | |
| CN201050430Y (en) | Isopiestically intensified fuel-injection pump for diesel engine | |
| CN201196172Y (en) | Oil compensating cylinder | |
| CN2392006Y (en) | Internal pressure type expansion piston | |
| CN214366963U (en) | Ultrahigh pressure hydraulic pump convenient for pressure regulation | |
| CN213541495U (en) | Piston effect component of double-sealing device for inner cavity of packing box of valve rod of control valve | |
| CN206874249U (en) | Fluid power expansion type well packer capable of flushing well | |
| CN201196173Y (en) | Gas-liquid boost system | |
| CN211448869U (en) | Plunger sleeve of diesel engine | |
| CN213541492U (en) | Double-sealing device for inner cavity of packing box of valve rod of control valve | |
| CN2570544Y (en) | Gas-liquid cylinder sealing arrangement | |
| CN206845581U (en) | A kind of Steam Turbine's Main Vaper Valve sealed cylinder | |
| CN2308731Y (en) | Hydraulic end of reciprocating high pressure water filling pump | |
| CN214660736U (en) | Mixed petroleum gas compressor head | |
| CN217328475U (en) | Enhanced sealing packing structure of valve body | |
| CN215927760U (en) | Pressing device for bearing of piston diaphragm pump box body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |