CN203685558U - Immersed side-wall-installed single-suction double-screw pump - Google Patents
Immersed side-wall-installed single-suction double-screw pump Download PDFInfo
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- CN203685558U CN203685558U CN201320605740.9U CN201320605740U CN203685558U CN 203685558 U CN203685558 U CN 203685558U CN 201320605740 U CN201320605740 U CN 201320605740U CN 203685558 U CN203685558 U CN 203685558U
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Abstract
The utility model discloses an immersed side-wall-installed single-suction double-screw pump. The immersed side-wall-installed single-suction double-screw pump comprises a pump body, an intermediate flange, a bearing seat, a connecting frame, as well as a driving screw, a driven screw, a synchronous gear and bearings, wherein the driving screw, the driven screw, the synchronous gear and the bearings are installed internally. The immersed side-wall-installed single-suction double-screw pump is characterized in that high-low-pressure inlet and outlet axes are in parallel with driving and driven screw axes; spiral parts at the front ends of the driving and driven screws are suspended in a pump body screw working cavity; each of a driving screw shaft and a driven screw shaft is fixed in the bearing seat through an axial positioning bearing and two radial support bearings, and each positioning bearing is positioned between the two radial support bearings; and the outer side of the bearing seat is provided with a plate-shaped connecting frame (12) connected with a ship body. The bearing seat provided by the utility model and a gear box are integrated; the installation mode of the pump is flange installation, thus meeting the requirements of immersion and side wall installation; and the bearings of the screw axes respectively have the functions of positioning and supporting, is reliable in positioning, is high in bearing capability, and is especially suitable for places with limited installation spaces.
Description
[technical field]
The utility model relates to fluid conveying two screw pump, and particularly a kind of is the single-suction double-screw pump that immersion type sidewall that offshore drilling, production platform supply material is used is installed for extra large work ship.
[background technique]
Sea work ship is a kind of specialized ships that offshore drilling, production platform are transported various building materials and the waste producing on platform transported back to land that aims at.Its Container Loading mode is that cabin is separated into independently cargo tank cabinet to store oil product and various liquid chemicals, and upper strata is the laydown area of various solid building materials, therefore, requires the structure on ship deck the least possible.At present, on extra large work ship, generally adopt centrifugal pump for deep well or the deep well screw pump de-ballast pump as boat-carrying liquid goods, and two deep-well pumps of the general outfit of each cargo tank cabinet.The driving machine of this class pump is installed above deck, by long intermediate propeller shaft with the deep-well pump that is suspended on cargo tank cabinet bottom to being connected.Like this, the distance of driving machine and pump is larger on the one hand, and vibration when pump assembly operation is larger, has greatly shortened the supporting on intermediate propeller shaft and pump shaft, the life-span of positioning bearing.And deep-well pump is in the time of maintenance, need whole unit be hung out just and can be carried out from cargo tank cabinet by cantilever crane.Therefore, repair density is large, and maintenance elapsed time is long, cannot meet user's requirement long to deep-well pump service cycle.On the other hand, because each cargo tank cabinet is at least equipped with two deep-well pumps, like this, the expensive real estate on extra large work boat deck is almost occupied by the driving machine of deep-well pump, greatly reduces the charging ratio of extra large work ship.
Have in the prior art a kind of liquid to carry the single-suction double-screw pump of use, its feature is that horizontal lower margin is installed, and imports and exports direction and goes out for axially entering top, and synchronous gear box and bearing support are split type.But because this screw pump is normally installed with base type, be generally arranged on the occasion of spacious open type, requirements of installation space is larger.On every screw axis of this pump, only have two bearings, one of them bearing had both been born axially locating, bore again the function of radial support, therefore, was not suitable for the needs of the extra large work ship of high reliability request.And this delivery side of pump axis is mutually vertical with the center line of screw axis, generally need to set up 90 ° of elbows at delivery side of pump in addition, the import and export axis that could realize pump is parallel to each other, and has both increased the complexity that pipeline connects, and has increased again the installation dimension of pump.Between the bearing support of this pump and synchronous gear box, be split type simultaneously, have the hidden danger of poorly sealed generation seepage between the two.Therefore can not directly be used as the de-ballast pump of the boat-carrying liquid goods of extra large work ship.
[model utility content]
The purpose of this utility model is in order to overcome the deficiencies in the prior art, and a kind of compact structure is provided, single-suction double-screw pump that the immersion type sidewall that operates steadily, be easy to install, be convenient to safeguard is installed, the demand to cargo tank cabinet de-ballast pump while meeting extra large work ship and be offshore drilling, production platform supply liquid goods.
The utility model is the single-suction double-screw pump that a kind of immersion type sidewall of design is installed for addressing the above problem adopted scheme.It comprises the pump housing (1), spacer flanger (2), bearing support (3), link press span (12), and inner active, the driven screw rod of installing, synchromesh gear, and bearing, in the described pump housing, be provided with the active, the driven screw rod active chamber (2.) that are horizontal 8-shaped, and partitioning wall be set around horizontal 8-shaped active chamber outer wall by hyperbaric chamber (A) and low-pressure cavity (B) separately, it is characterized in that:
The outlet port axis of the hyperbaric chamber (A) of the described pump housing (1) with initiatively, driven screw axis is parallel, the low-pressure cavity (B) of the pump housing (1) is positioned at initiatively, the front end of driven screw rod, its axis also with initiatively, driven screw axis is parallel;
The cross section of the spacer flanger (2) of the connecting end surface of the described pump housing (1) and bearing support (3) and centre is all the class figure of eight; Combined by the hole of the connection hyperbaric chamber (A) of top or the small circular holes of export pipeline (4.) and the active of below, driven screw hole;
Described spacer flanger (2) is the small circular holes of connection outlet pipeline (4.) up, below active, driven screw hole be a driving screw shaft hole arranged side by side and a driven screw rod axis hole on horizontal center line, in driving screw shaft hole and driven screw rod axis hole, a sealed letter body (9) is housed respectively;
Described bearing support (3) is the small circular holes of export pipeline (4.) up, below active, driven screw hole be initiatively, the bearing mounting hole of driven screw axis, bearing mounting hole opposite side connects synchromesh gear installation cavity;
The spiral part of described active, driven screw front end is suspended in pump housing screw rod active chamber, described active, driven screw axis part are arranged in the bearing mounting hole of bearing support (3), afterbody is arranged in the synchromesh gear chamber (5.) of bearing support (3), and the first synchromesh gear (10) and the second synchromesh gear (11) are housed respectively on it;
Driving screw shaft (5) in the described bearing mounting hole that is arranged on bearing support (3), driven screw axis (6) are fixed in bearing support (3) by an axially locating bearing (13) and two radial support bearings (14) and (15) respectively, and positioning bearing (13) is positioned between two radial support bearings (14) and (15);
Described driving screw shaft (5), driven screw axis (6) be in the pump housing (1) one side of spacer flanger, between the sealed letter body (9) initiatively, in driven screw axis and spacer flanger, a mechanical seal (16) is housed respectively; Driving screw shaft (5), driven screw axis (6), in bearing support (3) one sides, seal by the oil sealing in an oil sealing base (4) being arranged on spacer flanger respectively;
The synchromesh gear installation cavity outside of described bearing support (3) is also provided with a tabular link press span (12).
Compared with prior art, turnover on the pump housing, that a mouthful axis is parallel to screw axis axis, bearing support and gear-box to the utility model two screw pump is integrated, compact structure, and volume is little, is specially adapted to the limited place of installing space.The mounting type of pump is that flange is installed, and can meet the requirement that submergence and sidewall are installed, and has again simple installation, little feature takes up room.Screw axis adopts multi-form bearing to bear respectively the function of location and supporting, and location is reliable, bearing capacity is strong.The structure of bearing support and synchronous gear box is integral type, and compact structure, volume are little, good rigidly.
The utility model is applied on extra large work ship, because screw pump is can be immersed in liquid goods, and is arranged on the sidewall of cabin cabinet, thereby does not take deck space.Also Just because of this, there is no long intermediate propeller shaft between the driving machine of screw pump and pump, unit operation is steady, and reliability is high, thereby pump assembly is simple in structure, keep in repair easy, maintenance elapsed time short, maintenance cost is low.In addition, screw rod pump delivery is directly proportional to its rotating speed, and unit uses fluid motor-driven simultaneously, is easy to realize the electrodeless adjusting of POF.And the dielectric viscosity scope that screw pump is carried is wide, low to the receptance of dielectric viscosity, pump characteristics need not consider to unload when extra large work ship loads time, has improved loading, unloading efficiency.
[accompanying drawing explanation]
Fig. 1 is the plan view that immersion type sidewall is installed single-suction double-screw pump;
Fig. 2 is the main sectional view that immersion type sidewall is installed single-suction double-screw pump;
Fig. 3 is that immersion type sidewall is installed the local amplification view of single-suction double-screw pump;
Fig. 4 is the pump housing plan view that immersion type sidewall is installed single-suction double-screw pump;
Fig. 5 is the pump housing side view that immersion type sidewall is installed single-suction double-screw pump;
Fig. 6 is the spacer flanger side view that immersion type sidewall is installed single-suction double-screw pump;
Fig. 7 is the spacer flanger plan view that immersion type sidewall is installed single-suction double-screw pump.
In figure:
1-pump housing, 2-spacer flanger, 3-bearing support, 4-oil sealing base
5-driving screw shaft 6-driven screw axis 7-left-handed thread sleeve, 8-right-handed thread sleeve
9-sealed letter body, 10-the first synchromesh gear the 11-the second synchromesh gear
12-link press span, 13-axially locating bearing the 14-the first radial support bearing
15-the second radial support bearing 16-mechanical seal
A-hyperbaric chamber B-low-pressure cavity C-pump intake D-pump discharge
1.-oil hydraulic motor fitting seat 2.-initiatively, driven screw rod active chamber
3.-mechanical seal leakage detect hole 4.-export pipeline 5.-synchromesh gear installation cavity
6.-mechanical seal leakage collection cavity
[embodiment]
The utility model immersion type sidewall is installed single-suction double-screw pump (as shown in Figure 1, 2, 3), by the pump housing 1, and spacer flanger 2, bearing support 3, link press span 12, and inner active, the driven screw rod of installing, sealed letter body 9, oil sealing base 4, mechanical seal 16, bearing pack, the compositions such as synchromesh gear.
The described pump housing 1 is pressure part of the present utility model (as shown in Figure 4 and Figure 5), is the active chamber of active, driven screw rod, and active chamber is horizontal 8-shaped, is cast structure.Horizontal 8-shaped active chamber outer wall arranges partitioning wall around separates hyperbaric chamber A and low-pressure cavity B.The axis in the hyperbaric chamber A outlet port of the described pump housing (1) with initiatively, driven screw axis is parallel, the low-pressure cavity B of the pump housing (1) is positioned at initiatively, the front end of driven screw rod, its axis also with initiatively, driven screw axis is parallel;
The cross section of the spacer flanger (2) of the connecting end surface of the described pump housing (1) and bearing support (3) and centre is all the class figure of eight; By the hole of the connection hyperbaric chamber (A) of top or export pipeline, 4. small circular holes and the active of below, driven screw hole combine; (as shown in Figure 6,7)
Described spacer flanger (2) is the small circular holes of connection outlet pipeline (4.) up, below active, driven screw hole be a driving screw shaft hole arranged side by side and a driven screw rod axis hole on horizontal center line, in driving screw shaft hole and driven screw rod axis hole, a sealed letter body (9) is housed respectively; Initiatively, between driven screw axis and sealed letter body, mechanical seal 16 is installed, and the opposite side of spacer flanger (2) is equipped with oil sealing base 4,6. part in the middle of this two seals forms mechanical seal leakage collection cavity, 3. this chamber communicates with two detection holes on bearing support 3, then can be connected to Surveillance center by connecting pipeline.
Described bearing support (3) is the mounting base of active, driven screw axis location, block bearing, is again the installation cavity of synchromesh gear, is cast structure.In described bearing support (3), except being provided with bearing installation cavity with the synchromesh gear installation cavity being axially connected with bearing installation cavity, 3. the seal leakage that 6. communicates with the mechanical seal leakage collection cavity on spacer flanger 2 respectively of 4. with two, export pipeline chamber that is also provided with and isolation parallel with bearing installation cavity detects hole.
Described active, driven screw rod (as Fig. 2, as shown in) be the main motion parts of pump, initiatively, the spiral part of driven screw front end is suspended in pump housing chamber, described active, driven screw axis part are arranged in bearing installation cavity, 5. afterbody is positioned at synchromesh gear installation cavity, and synchromesh gear 1(10 is housed respectively on it) and synchromesh gear 2(11).Described active, driven screw rod respectively by initiatively, driven screw axis 5,6 and be sleeved on initiatively, left-handed thread sleeve 7 and the right-handed thread sleeve 8 of driven screw axis front end form.
Described driving screw shaft (5), driven screw axis (6) be in the pump housing (1) one side (as shown in Figure 3) of spacer flanger (2), between the sealed letter body (9) initiatively, in driven screw axis and spacer flanger, a mechanical seal (16) is housed respectively; Driving screw shaft (5), driven screw axis (6), in bearing support (3) one sides, seal by the oil sealing in an oil sealing base (4) being arranged on spacer flanger (2) respectively.6. space between described sealed letter body and oil sealing base forms mechanical seal leakage collection cavity; Described mechanical seal leakage collection cavity detects hole by the mechanical seal leakage in spacer flanger and oil sealing base and is 3. connected to Surveillance center.
Described driving screw shaft 5, driven screw axis 6 are fixed in bearing support (3) by an axially locating bearing (13) and the first radial support bearing (14) and the second radial support bearing (15) respectively, and positioning bearing (13) is positioned between the first radial support bearing (14) and the second radial support bearing (15), and three bearings are arranged on respectively in the corresponding bearing mounting hole in bearing support.
The synchromesh gear installation cavity outside of described bearing support (3) is also provided with a tabular link press span 12, its profile is disc and is a large flange, which is provided with the attachment hole that use is installed with side sheets, in the position coaxial with driving shaft 5, be provided with the fitting seat of oil hydraulic motor 1.; Simultaneously 4. corresponding place be provided with outlet(discharge) flange with export pipeline.Pump is connected with the sidewall of cargo tank cabinet by link press span 12, realizes the requirement of submergence, sidewall installation.
When the utility model work, its power is inputted by driving shaft 5, is delivered to driven shaft 6 by the first synchromesh gear 10, the second synchromesh gear 11, drives left-handed thread sleeve 7, right-handed thread sleeve 8 to do synchromesh campaign.Now, medium enters the low-pressure cavity B of the pump housing 1 from entrance (C) flange of the pump housing 1, then enter the 8-shaped screw-casing mounting hole of the pump housing 1 from low-pressure cavity B, along with the engagement of left-handed thread sleeve 7, right-handed thread sleeve 8 is rotated, the hyperbaric chamber A of the pump housing 1 being transferred vertically, then through the export pipeline chamber of bearing support 3 4. and the outlet D of link press span 12 discharge the pump housing.Mechanical seal 16 is isolated the medium in the pump housing 1 hyperbaric chamber A with driving shaft 5 and driven shaft 6, prevent that medium is to external leakage.In the time will checking whether the mechanical seal of pump leaks, as long as the 3. middle pressurized air of introducing of any one peep hole in bearing support 3, then observe the gaseous state that 3. another peep hole discharges from bearing support 3, if the gas of discharging is carried more pumped medium secretly, just can judge that mechanical seal is because damage is leaked; If carry more machinery oil secretly in the gas of discharging, can judge that the oil sealing on bearing support leaks; Thereby realize the on-line monitoring of sealing running state.
Claims (4)
1. an immersion type sidewall is installed single-suction double-screw pump, it comprises the pump housing (1), spacer flanger (2), bearing support (3), link press span (12), and inner active, the driven screw rod of installing, the first and second synchromesh gears, and bearing, be provided with the active, the driven screw rod active chamber (2.) that are horizontal 8-shaped in the described pump housing, and partitioning wall is set around horizontal 8-shaped active chamber outer wall hyperbaric chamber (A) and low-pressure cavity (B) is separated, it is characterized in that:
The outlet port axis of the hyperbaric chamber (A) of the described pump housing (1) with initiatively, driven screw axis is parallel, the low-pressure cavity (B) of the pump housing (1) is positioned at initiatively, the front end of driven screw rod, its axis also with initiatively, driven screw axis is parallel;
The cross section of the spacer flanger (2) of the connecting end surface of the described pump housing (1) and bearing support (3) and centre is all the class figure of eight; Combined by the hole of the connection hyperbaric chamber (A) of top or the small circular holes of export pipeline (4.) and the active of below, driven screw hole;
Described spacer flanger (2) is the small circular holes of connection outlet pipeline (4.) up, below active, driven screw hole be a driving screw shaft hole arranged side by side and a driven screw rod axis hole on horizontal center line, in driving screw shaft hole and driven screw rod axis hole, a sealed letter body (9) is housed respectively;
Described bearing support (3) is the small circular holes of export pipeline (4.) up, below active, driven screw hole be initiatively, the bearing mounting hole of driven screw axis, bearing mounting hole opposite side connects the first and second synchromesh gear installation cavitys;
The spiral part of described active, driven screw front end is suspended in pump housing screw rod active chamber, described active, driven screw axis part are arranged in the bearing mounting hole of bearing support (3), afterbody is arranged in the first and second synchromesh gear installation cavitys (5.) of bearing support (3), and the first synchromesh gear (10) and the second synchromesh gear (11) are housed respectively on it;
Driving screw shaft (5) in the described bearing mounting hole that is arranged on bearing support (3), driven screw axis (6) are fixed in bearing support (3) by an axially locating bearing (13) and the first radial support bearing (14) and the second radial support bearing (15) respectively, and positioning bearing (13) is positioned between the first radial support bearing (14) and the second radial support bearing (15);
Described driving screw shaft (5), driven screw axis (6) be in the pump housing (1) one side of spacer flanger, between the sealed letter body (9) initiatively, in driven screw axis and spacer flanger, a mechanical seal (16) is housed respectively; Driving screw shaft (5), driven screw axis (6), in bearing support (3) one sides, seal by the oil sealing in an oil sealing base (4) being arranged on spacer flanger respectively;
The first and second synchromesh gear installation cavity outsides of described bearing support (3) are also provided with a tabular link press span (12).
2. immersion type sidewall according to claim 1 is installed single-suction double-screw pump, it is characterized in that described active, driven screw rod are made up of driving screw shaft (5), driven screw axis (6) and the left-handed thread sleeve (7) and the right-handed thread sleeve (8) that are sleeved on driving screw shaft (5), driven screw axis (6) front end respectively.
3. immersion type sidewall according to claim 1 and 2 is installed single-suction double-screw pump, it is characterized in that described tabular link press span is provided with the attachment hole that use is installed with side sheets, be provided with outlet(discharge) flange in the place corresponding with export pipeline (4.), in the position coaxial with driving shaft (5), be provided with the fitting seat (1.) of oil hydraulic motor.
4. immersion type sidewall according to claim 3 is installed single-suction double-screw pump, it is characterized in that the space between described sealed letter body and oil sealing base forms mechanical seal leakage collection cavity (6.); Described mechanical seal leakage collection cavity detects hole (3.) by the mechanical seal leakage in spacer flanger and oil sealing base and is connected to Surveillance center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320605740.9U CN203685558U (en) | 2013-09-27 | 2013-09-27 | Immersed side-wall-installed single-suction double-screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320605740.9U CN203685558U (en) | 2013-09-27 | 2013-09-27 | Immersed side-wall-installed single-suction double-screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685558U true CN203685558U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320605740.9U Expired - Fee Related CN203685558U (en) | 2013-09-27 | 2013-09-27 | Immersed side-wall-installed single-suction double-screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203685558U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511249A (en) * | 2013-09-27 | 2014-01-15 | 天津市瑞德螺杆泵制造技术有限公司 | Immersed side-wall-mounted single-suction two-screw pump |
-
2013
- 2013-09-27 CN CN201320605740.9U patent/CN203685558U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511249A (en) * | 2013-09-27 | 2014-01-15 | 天津市瑞德螺杆泵制造技术有限公司 | Immersed side-wall-mounted single-suction two-screw pump |
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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 |
Granted publication date: 20140702 Termination date: 20140927 |
|
| EXPY | Termination of patent right or utility model |