CN103511249A - Immersed side-wall-mounted single-suction two-screw pump - Google Patents
Immersed side-wall-mounted single-suction two-screw pump Download PDFInfo
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- CN103511249A CN103511249A CN201310454178.9A CN201310454178A CN103511249A CN 103511249 A CN103511249 A CN 103511249A CN 201310454178 A CN201310454178 A CN 201310454178A CN 103511249 A CN103511249 A CN 103511249A
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Abstract
The invention relates to an immersed side-wall-mounted single-suction two-screw pump which comprises a pump body, a spacer flange, a bearing pedestal, a connecting frame, a drive screw, a driven screw, a synchromesh gear and a bearing, wherein the drive screw and the driven screw are internally mounted. The immersed side-wall-mounted single-suction two-screw pump is characterized in that the axis of an outlet of a high pressure cavity of the pump body and the axis of an inlet of a low pressure cavity of the pump body are parallel to the axis of the drive screw and the axis of the driven screw, spiral parts at the front ends of the drive screw and the driven screw are suspended in working cavities of the screws of the pump body, shafts of the drive screw and the driven screw are fixed into the bearing pedestal by an axial locating bearing and two radial supporting bearings, the locating bearing is located between the two radial supporting bearings, and the plate-type connecting frame (12) connected with a boat body is arranged on the outer side of the bearing pedestal. According to the invention, the bearing pedestal and a gear box are integrated, the pump adopts a flange mounting mode, the requirements of immersion and side-wall mounting are met, the bearings of shafts of the screws undertake the functions of locating and supporting respectively, the locating is reliable, the bearing capability is strong, and the immersed side-wall-mounted single-suction two-screw pump is particularly applicable to an occasion with a limited mounting space.
Description
[technical field]
The present invention relates to fluid conveying two screw pump, 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 deep well screw pump as the de-ballast pump of 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 be suspended on cargo tank cabinet bottom deep-well pump to being connected.Like this, the distance of driving machine and pump is larger on the one hand, and vibration during 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 when 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, the expensive real estate on ，Hai Gong boat deck is almost occupied by the driving machine of deep-well pump like this, 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 at delivery side of pump, to set up 90 ° of elbows 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.
[summary of the invention]
The object of the invention 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 when meeting extra large work ship and being offshore drilling, production platform supply liquid goods.
The present invention addresses the above problem the single-suction double-screw pump that adopted scheme is a kind of immersion type sidewall installation of design.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 (10) (11), 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 at horizontal 8-shaped active chamber outer wall, partitioning wall be around set hyperbaric chamber (A) and low-pressure cavity (B) are 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; Both by (A) hole of the connection outlet pipeline of top or the small circular holes of export pipeline (4.) and the active of below, driven screw hole, combined;
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 are partly arranged in the bearing mounting hole of bearing support (3), afterbody is arranged in the synchromesh gear chamber (5.) of bearing support (3), and synchromesh gear (10) (11) is housed respectively on it;
Active in the described bearing mounting hole that is arranged on bearing support (3), driven screw axis (5) (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 active, driven screw axis (5) (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; Initiatively, driven screw axis (5) (6) is in bearing support (3) one sides, by the oil sealing in an oil sealing base (4) being arranged on spacer flanger, seal 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, it is integrated that the turnover on the pump housing, a mouthful axis are parallel to screw axis axis, bearing support and gear-box to two screw pump of the present invention, 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 present invention 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 is used 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 in the time of need not considering to unload when extra large work ship loads, 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-synchromesh gear, 1 11-synchromesh gear 2
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]
Immersion type sidewall of the present invention 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 invention (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; Both by (A) hole of the connection outlet pipeline of top or export pipeline, 4. small circular holes and the active of below, driven screw hole combined; (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. 4. with two, the export pipeline chamber that is also provided with and isolation parallel with bearing installation cavity communicates with mechanical seal leakage collection cavity on spacer flanger 2 respectively 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 are partly 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 active, driven screw axis (5) (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; Initiatively, driven screw axis (5) (6) is in bearing support (3) one sides, by the oil sealing in an oil sealing base (4) being arranged on spacer flanger (2), seal respectively.6. described sealed letter body and oil sealing base Jian space form 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 active, driven screw axis 5,6 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, 1. the position coaxial with driving shaft 5, be provided with the fitting seat of oil hydraulic motor; 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 present invention works, its power is inputted by driving shaft 5, by synchromesh gear 10,11, is delivered to driven shaft 6, 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 from low-pressure cavity B, enter the 8-shaped screw-casing mounting hole of the pump housing 1, 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, by the medium in the pump housing 1 hyperbaric chamber A and driving shaft 5 and driven shaft 6 isolation, prevents that medium is to external leakage.In the time will checking whether the mechanical seal of pump leaks, as long as any one peep hole is introduced pressurized air in 3. 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, synchromesh gear (10) (11), 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 at horizontal 8-shaped active chamber outer wall, partitioning wall is set around 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; Both by (A) hole of the connection outlet pipeline of top or the small circular holes of export pipeline (4.) and the active of below, driven screw hole, combined;
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 are partly arranged in the bearing mounting hole of bearing support (3), afterbody is arranged in the synchromesh gear installation cavity (5.) of bearing support (3), and synchromesh gear 1(10 is housed respectively on it) and synchromesh gear 2(11);
Active in the described bearing mounting hole that is arranged on bearing support (3), driven screw axis (5) (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 active, driven screw axis (5) (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; Initiatively, driven screw axis (5) (6) is in bearing support (3) one sides, by the oil sealing in an oil sealing base (4) being arranged on spacer flanger, seal respectively;
The synchromesh gear installation cavity outside of described bearing support (3) is 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 respectively by initiatively, driven screw axis (5) (6) and the left-handed thread sleeve (7) and the right-handed thread sleeve (8) that are sleeved on active, driven screw axis front end form.
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, and export pipeline hole (4.) flange and oil hydraulic motor fitting seat are 1..
4. immersion type sidewall according to claim 3 is installed single-suction double-screw pump, it is characterized in that 6. described sealed letter body and oil sealing base Jian space form 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454178.9A CN103511249A (en) | 2013-09-27 | 2013-09-27 | Immersed side-wall-mounted single-suction two-screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454178.9A CN103511249A (en) | 2013-09-27 | 2013-09-27 | Immersed side-wall-mounted single-suction two-screw pump |
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| Publication Number | Publication Date |
|---|---|
| CN103511249A true CN103511249A (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310454178.9A Pending CN103511249A (en) | 2013-09-27 | 2013-09-27 | Immersed side-wall-mounted single-suction two-screw pump |
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| CN (1) | CN103511249A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107002670A (en) * | 2014-11-20 | 2017-08-01 | Itt博尔内曼有限责任公司 | Device for the transfer of a medium |
| CN108223360A (en) * | 2018-02-28 | 2018-06-29 | 上海诺科泵业有限公司 | Asymmetric screw rotor, the generation method of its profile and Quimby pump |
| CN109798242A (en) * | 2019-03-26 | 2019-05-24 | 山东劳伦斯流体科技有限公司 | A kind of small flow Quimby pump of cantilevered single suction |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107002670A (en) * | 2014-11-20 | 2017-08-01 | Itt博尔内曼有限责任公司 | Device for the transfer of a medium |
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| CN108223360B (en) * | 2018-02-28 | 2024-05-07 | 上海诺科泵业有限公司 | Asymmetric screw rotor, method for generating end surface molded line of asymmetric screw rotor and double-screw pump |
| CN109798242A (en) * | 2019-03-26 | 2019-05-24 | 山东劳伦斯流体科技有限公司 | A kind of small flow Quimby pump of cantilevered single suction |
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Application publication date: 20140115 |