CN201787170U - Hydraulic cylinder piston rod mechanism for hydraulic gate valve - Google Patents
Hydraulic cylinder piston rod mechanism for hydraulic gate valve Download PDFInfo
- Publication number
- CN201787170U CN201787170U CN2010202897432U CN201020289743U CN201787170U CN 201787170 U CN201787170 U CN 201787170U CN 2010202897432 U CN2010202897432 U CN 2010202897432U CN 201020289743 U CN201020289743 U CN 201020289743U CN 201787170 U CN201787170 U CN 201787170U
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- piston
- valve rod
- fluid cylinder
- hydraulic cylinder
- hydraulic
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- Expired - Lifetime
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Abstract
The utility model discloses a hydraulic cylinder piston rod mechanism for a hydraulic gate valve, and relates to the technical field of design and manufacture of a hydraulic cylinder piston rod of the hydraulic gate valve. The hydraulic cylinder piston rod mechanism comprises a valve rod mechanism and a hydraulic cylinder mechanism, wherein the valve rod mechanism comprises a piston, an upper valve rod and a lower valve rod; the hydraulic cylinder mechanism comprises a hydraulic cylinder and a hydraulic cylinder cover; hanging heads are arranged at the front ends of the upper valve rod and the lower valve rod; the hydraulic cylinder piston rod mechanism adopting the hook connection for the hydraulic gate valve is designed, so that the problem that the hydraulic cylinder, the piston, the piston rod and the hydraulic cylinder cover are very difficult to assemble is solved; in addition, the hydraulic cylinder piston rod mechanism is characterized in that the design and machining precision requirements on the form-position tolerance such as the coaxiality and the like between the piston and the hydraulic cylinder, as well as between the piston rod and the hydraulic cylinder cover can be reduced.
Description
Technical field:
A kind of liquid cylinder piston linkage of hydraulic valve is used for the manufacturing of gate valve, relates to a kind of design and manufacturing technology field of hydraulic valve liquid cylinder piston bar.
Background technique:
All need to use in a large number hydraulic valve in oil and gas well drilling, at home, the liquid cylinder piston linkage of the hydraulic valve of prior art has two kinds basically, the one, with having step, piston rod passes piston, and utilizes nut that piston rod and piston are compressed, and implements to be connected; The structural member that alternative piston and piston rod are as a whole; Working method is by hydraulic coupling driven plunger, piston rod, and the gate valve valve plate is reciprocatingly moved, and realizes the opening and closing of hydraulic valve; The shortcoming of prior art is: because present this mechanism form, need piston to cooperate and sealing with the fluid cylinder lid with piston rod, piston rod respectively with fluid cylinder, piston, these cooperations and sealing need higher requirement to form and position tolerance such as the coaxality of piston, fluid cylinder, piston rod and fluid cylinder lid and machining accuracy, especially in the long gate valve of piston stroke, the assembling difficulty of the fluid cylinder of its hydraulic valve, piston, piston rod and fluid cylinder lid is very big, requirement on machining accuracy to the gate valve component is higher, so just causes cost of production and labor intensity all to increase; Simultaneously, because the existence of existing issue may cause the reduction of pulling damage and rubber seal working life and sealability of metallic element.
The model utility content:
The utility model purpose is to overcome the deficiencies in the prior art, with piston and the form that piston rod adopts hook to be connected, has designed a kind of liquid cylinder piston linkage of linking up with the hydraulic valve of connection.
The utility model is achieved in that the utility model comprises valve rod mechanism and fluid cylinder mechanism, is characterized in that: described valve rod mechanism comprises piston 4, upper valve rod 1 and lower valve rod 6; Described fluid cylinder mechanism comprises fluid cylinder 5 and fluid cylinder lid 2, is respectively arranged with hanging head 3 at the front end of upper valve rod 1 and lower valve rod 6, is provided with hanging groove at the upper and lower surface of piston 4, and the hanging head 3 of upper valve rod 1 and lower valve rod 6 front ends is hung in the hanging groove of piston 4 upper and lower surfaces;
The cylindrical of circle and piston 4 is respectively arranged with upper stem seal circle 7 between described fluid cylinder lid 2 and upper valve rod 1, in fluid cylinder lid 2 and fluid cylinder 5 upper ends, fluid cylinder covers seal ring 8 and piston packing 9;
The diameter of described piston 4 upper and lower faces hanging grooves is greater than the diameter of upper valve rod 1 and lower valve rod 6 front end hanging heads.
During use, when hydraulic coupling when the upper end liquid entering hole of fluid cylinder 5 enters fluid cylinder 5, hydraulic coupling promotes piston 4 and moves downward, and promotes lower valve rod 6 and also move downward, when lower valve rod 6 moves downward, valve plate also is pushed downwards, according to descending the different of general formula gate valve and last general formula gate valve, adopts the utility model to connect and uses, when the valve plate of following general formula gate valve is downward, with regard to closing gate valve, when the valve plate of last general formula gate valve moves downward, just open gate valve.
Of the present utility model a bit and beneficial effect be: the diameter of the hanging groove of offering to the central point of piston 4 on any one periphery of piston 4 is greater than the diameter of hanging head 3, so just make the mode of being rigidly connected of piston and piston rod that transformation has taken place, make lower valve rod easily just can hang in the hanging groove, simultaneously, under the support of fluid cylinder lid 2 and lower end valve body, can guarantee fluid cylinder 5 again, piston rod 1 and 6, and between the fluid cylinder lid 2 to neutrality, simultaneously can also reduce piston and fluid cylinder, the design of the form and position tolerances such as coaxality of piston rod and fluid cylinder lid and the requirement of machining accuracy, therefore the production and processing cost can be reduced, surge rubber seal working life and sealability can also be improved.
Description of drawings:
Fig. 1 is the schematic representation that assembles of the utility model and gate valve.
Fig. 2 is a structure for amplifying schematic representation of the present utility model.
Embodiment:
Provide embodiment of the present utility model below in conjunction with accompanying drawing:
Embodiment 1: structure of the present utility model comprises valve rod mechanism and fluid cylinder mechanism, and valve rod mechanism is made up of piston 4, upper valve rod 1 and lower valve rod 6; Fluid cylinder mechanism is made up of fluid cylinder 5 and fluid cylinder lid 2, in order to realize articulating of piston 4 and upper and lower valve rod 1 and 6, front end at upper valve rod 1 and lower valve rod 6 is respectively arranged with hanging head 3 and 10, upper and lower faces at piston 4 is provided with rectangular hanging groove, hang in the hanging groove of piston 4 upper and lower faces smoothly for the ease of hanging head 3 and 10, the diameter of piston 4 upper and lower faces hanging grooves is greater than the diameter of upper valve rod 1 and lower valve rod 6 front end hanging heads; For the purpose that seals, the cylindrical of circle and piston 4 is respectively arranged with upper stem seal circle 7 between described fluid cylinder lid 2 and upper valve rod 1, in fluid cylinder lid 2 and fluid cylinder 5 upper ends, fluid cylinder covers seal ring 8 and piston packing 9;
Embodiment 2: when making piston 4 of the present utility model, a rectangular hanging groove is offered to the central point of piston 4 in any one position on the periphery of piston 4, hanging groove can be offered the rectangular hanging groove of break-through to another side from a periphery of piston 4, also can offer the rectangular hanging groove of not break-through; Make miscellaneous part then; During installation, to go up, lower valve rod 1 and 6 hanging head 3 and 10 are hung on the piston 4, in the rectangular hanging groove that following two sides is offered, because the diameter of hanging groove is greater than the diameter of hanging head 3 and 10, make the mode of being rigidly connected of piston and piston rod that transformation take place, so easily just can hang, load onto seal ring 7 then, 8 and 9, again fluid cylinder lid 2 is passed upper valve rod 1, cover on the fluid cylinder 5, tighten fluid cylinder lid 2 fixing by bolt again, after fluid cylinder lid 2 is tightened and is fixed, because the location of fluid cylinder lid 2, can guarantee fluid cylinder 5, piston rod 1 and 6 and fluid cylinder lid 2 between to neutrality, this mode can reduce piston 4 and fluid cylinder 5, piston rod 1 and 6, and the design of the form and position tolerance of the coaxality of fluid cylinder lid 2 and the requirement of machining accuracy; After the hydraulic cylinder part assembling finishes, connect the liquid in-out pressure pipe at last, just can use;
Embodiment 3: during use, when hydraulic coupling when the liquid entering hole of fluid cylinder 5 upper ends enters in the fluid cylinder 5, hydraulic coupling promotes piston and moves downward, when the liquid of piston 4 lower ends is pushed out fluid cylinder 5, piston promotes lower valve rod 6 and moves downward, and the lower end of lower valve rod 6 is connected with valve plate, so, when lower valve rod 6 moved downward, valve plate also was pushed and moves downward; The utility model can be connected general formula or be used on the general formula gate valve down, if the utility model is connected with following general formula gate valve when using, when valve plate moves downward the arrival lower dead centre, with regard to closing gate valve; If the utility model is connected use with last general formula gate valve, when valve plate moves downward the arrival lower dead centre, just open gate valve; In the using process, because the cylindrical of circle and piston 4 is respectively arranged with upper stem seal circle 7, fluid cylinder lid seal ring 8 and piston packing 9 between fluid cylinder lid 2 and upper valve rod 1, in fluid cylinder lid 2 and fluid cylinder 5 upper ends, so can improve surge rubber seal working life and sealability.
Claims (3)
1. the liquid cylinder piston linkage of a hydraulic valve comprises valve rod mechanism and fluid cylinder mechanism, and it is characterized in that: described valve rod mechanism comprises piston, upper valve rod and lower valve rod; Described fluid cylinder mechanism comprises fluid cylinder and fluid cylinder lid, is respectively arranged with hanging head at the front end of upper valve rod 1 and lower valve rod, is provided with hanging groove at the upper and lower surface of piston, and the hanging head of upper valve rod and lower valve rod front end is hung in the hanging groove of piston upper and lower surface.
2. the liquid cylinder piston linkage of hydraulic valve according to claim 1 is characterized in that: the cylindrical of circle and piston is respectively arranged with the upper stem seal circle between described fluid cylinder lid and upper valve rod, in fluid cylinder lid and the fluid cylinder upper end, fluid cylinder covers seal ring and piston packing.
3. the liquid cylinder piston linkage of hydraulic valve according to claim 1, it is characterized in that: the diameter of described piston upper and lower faces hanging groove is greater than the diameter of upper valve rod and lower valve rod front end hanging head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202897432U CN201787170U (en) | 2010-08-12 | 2010-08-12 | Hydraulic cylinder piston rod mechanism for hydraulic gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202897432U CN201787170U (en) | 2010-08-12 | 2010-08-12 | Hydraulic cylinder piston rod mechanism for hydraulic gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201787170U true CN201787170U (en) | 2011-04-06 |
Family
ID=43819133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202897432U Expired - Lifetime CN201787170U (en) | 2010-08-12 | 2010-08-12 | Hydraulic cylinder piston rod mechanism for hydraulic gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201787170U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565503A (en) * | 2015-01-09 | 2015-04-29 | 中国船舶重工集团公司第七0四研究所 | Hydraulic gate valve opening/closing control structure |
| CN107269622A (en) * | 2017-07-31 | 2017-10-20 | 山东万通液压股份有限公司 | Self-adapting type piston rod and piston coupling structure |
-
2010
- 2010-08-12 CN CN2010202897432U patent/CN201787170U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565503A (en) * | 2015-01-09 | 2015-04-29 | 中国船舶重工集团公司第七0四研究所 | Hydraulic gate valve opening/closing control structure |
| CN107269622A (en) * | 2017-07-31 | 2017-10-20 | 山东万通液压股份有限公司 | Self-adapting type piston rod and piston coupling structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |
|
| CX01 | Expiry of patent term |