A kind of jack-up unit shoe rush a nozzle
The utility model relates to a kind of punching stake nozzle, is specifically related to an a kind of nozzle that rushes that is applicable to jack-up unit shoe.
Self-elevating drilling platform is at present application marine mobile offshore boring island very widely of China, generally by 3 to 4 can lifting the movement of spud leg implementation platform.Platform arrives specifies marine site while carrying out operation, first will carry out pitching pile and ballast, and spud leg and shoe are inserted in stratum, seabed to certain depth to obtain enough foundation capabilities and stability; After fulfiling assignment, platform need to be extracted spud leg and shoe from submarine soil, then moves to next well location.
Punching stake is the effective means that solves self-elevating drilling platform pile pulling difficulty, when punching stake, conventionally first dredge washing pipe with high-pressure pump, use again low pressure large discharge pump to shoe below water filling, destroy the absorption affinity between shoe and earth, wash away shoe around adhere to earth, the resistance that while reducing pile pulling, shoe is subject to.
But the form of rushing a nozzle and all adopt open tube of current all jack-up units, pitching pile process is often refluxed and stops up by sand, thereby causes carrying out effectively punching stake.If can not carry out effective punching stake, in pile pulling process, shoe bottom can produce huge bottom absorption affinity due to negative hole pressure, brings difficulty to platform pile pulling operation.
All there is no at present effectively to solve the shoe punching stake nozzle that is applicable to self-elevating drilling platform of jetting pipeline blockage problem both at home and abroad.
Utility model content
The utility model provides a kind of nozzle that rushes of jack-up unit shoe, its objective is that the in use outlet part that solves existing punching stake nozzle is easily stopped up by sandy soil the technical problem that causes rushing smoothly stake.
In order to realize foregoing invention object, the technical scheme that the utility model is taked is as follows:
Jack-up unit shoe rush a nozzle, it is characterized in that: nozzle body is the body of an end opening, one end sealing, and body openend has connecting portion, offers outlet part on tube wall.
Preferably, described outlet part is effluent trough, mesh-shape weep hole or strip water outlet seam.
Preferably, described outlet part is at least two, is symmetricly set on nozzle body sidewall.
Preferably, described outlet part is wrapped with anti-blocking portion.
Preferably, described anti-blocking portion is rubber sleeve.
Preferably, described anti-blocking portion is fixed on outlet part periphery by fixture.
Preferably, described fixture is clip or realizes fastening by steel wire winding.
Preferably, described connecting portion is screw thread or weld seam.
Preferably, there is the force section of hex nut shape described body openend outside.
Compared to the prior art the utility model, has following beneficial effect:
(1) punching stake nozzle described in the utility model, by outlet part being opened in to the side of nozzle body, the nozzle bottom that inserts seabed bottom can be sealed, avoid the nozzle arrangements of bottom opening formula to be stopped up by sand in pile pulling process, shoe bottom cannot be eliminated because negative hole pressure produces huge bottom absorption affinity, thereby the defect of stake cannot be dialled smoothly.
(2), by the change to outlet part form and the setting of anti-blocking portion, can in effectively rushing stake, prevent that the backflow of stake soil from causing pipeline to stop up, and realizes punching smoothly.
(3) punching stake nozzle body adopts multiple type of attachment with rushing between pile pipe, is convenient to mount and dismount and has increased rush a nozzle and the various compatibility of pile pipe between being connected of rushing.
(4) by adopting fixture anti-blocking portion to be fixed on to the periphery of outlet part, can prevent anti-blocking portion in punching stake process due to the impact-sliding of current or come off.
Brief description of the drawings
Fig. 1 is punching stake nozzle and shoe connection diagram.
Fig. 2 is punching stake nozzle arrangements sectional view.
Reference numeral: 1-nozzle body, 101-effluent trough, 102-screw thread, 103-force section, 2-rubber sleeve, 3-clip, 4-shoe, 5-rush pile pipe.
Detailed description of the invention
For making goal of the invention of the present utility model, technical scheme and beneficial effect more cheer and bright, below in conjunction with accompanying drawing, embodiment of the present utility model is described, it should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can be combined mutually.
Fig. 2 is punching stake nozzle arrangements sectional view.As shown in Figure 2, a kind of jack-up unit shoe rush a nozzle, nozzle body 1 is the body of an end opening, one end sealing, body openend has connecting portion, offers outlet part on tube wall.Described outlet part is wrapped with anti-blocking portion.In the present embodiment, outlet part is effluent trough 101, and outlet part also can be mesh-shape weep hole or strip water outlet seam in other embodiments.In the present embodiment, effluent trough 101 is two, is symmetricly set on nozzle body 1 sidewall taking the middle axial plane of nozzle body as symmetrical centre.In other embodiments, also can effluent trough be set to the multiple of centered by the center of nozzle body radial distribution according to the needs of punching stake, in order to ensure a punching stake effect, the distribution of effluent trough should be even.
In the present embodiment, anti-blocking portion is rubber sleeve 2, and rubber sleeve 2 is tightly enclosed within on nozzle body 1.In nozzle outside, clip 3 blocks rubber sleeve 2, thereby is fixed.Clip 3 connects locking by bolt 4.While not rushing stake, rubber sleeve 2 is tightly attached on nozzle body 1, outside stake soil extruding rubber sleeve 2, but can not enter nozzle interior.When rushing when stake, punching stake water enters nozzle body 1 inside through jetting pipeline 5, and punching stake water sees through delivery port 12 punching press rubber sleeves 2, causes rubber sleeve distending and punching stake water is flowed out, and reaches the effect of punching stake.
Fig. 1 is punching stake nozzle and shoe connection diagram.As shown in Figure 1, above-mentioned punching stake nozzle is connected the connecting portion connection by nozzle body openend with the pile pipe 5 of rushing in shoe 4, the connecting portion providing in the present embodiment is the screw thread 102 of processing in advance at the openend inner surface of nozzle body, when not having female time, can also adopt the modes such as welding to realize nozzle and rush the reliable connection of pile pipe 5.For the ease of upper button and the shackle of screw thread, there is the force section 103 of hex nut shape in body openend outside, when upper button and shackle, clamp force section by spanner, twist body, realize and touch being threaded of mouth and shoe.
Although the embodiment that the utility model discloses as above, the embodiment that its content just adopts for the ease of understanding the technical solution of the utility model, is not intended to limit the utility model.Technician under any the utility model in technical field; do not departing under the prerequisite of the core technology scheme that the utility model discloses; can in the form of implementing and details, make any amendment and variation; but the protection domain that the utility model limits, the scope that still must limit with appending claims is as the criterion.