CN110017284A

CN110017284A - There are 2 grades or centrifugal multistage pump multiple centrifugal pump of at least two difference lift leakage fluid dram

Info

Publication number: CN110017284A
Application number: CN201810043423.XA
Authority: CN
Inventors: 何巨堂; 李博; 韩清霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-01-06
Filing date: 2018-01-06
Publication date: 2019-07-16

Abstract

There are 2 grades or centrifugal multistage pump multiple centrifugal pump of at least two difference lift leakage fluid dram, as direct hydrogenation liquefaction of coal reaction process high temperature high pressure oil coal slurry is conveyed with shielding electric centrifugal pump, the shielded electric pump of 2 grades or multi-stage impeller is configured with one, after the pressurization of import liquid material all the way, the flow points conveying different at least two operating pressure is containing solid slurry.

Description

There are 2 grades or centrifugal multistage pump multiple centrifugal pump of at least two difference lift leakage fluid dram

Technical field

The present invention relates to 2 grades or centrifugal multistage pump multiple centrifugal pumps having at least two difference lift leakage fluid dram；Particularly the present invention relates to There is the shielding electric centrifugal pump of at least two difference lift leakage fluid dram；More particularly the present invention relates to have at least two difference lift High temperature and pressure of the conveying of leakage fluid dram containing solid-liquid shields electric centrifugal pump, is suitable for hydrocarbon material hydrogenation process such as coal hydrogenation Direct liquefaction reaction process high temperature high pressure oil coal slurry conveying shielding electric centrifugal pump, configures 2 grades or multi-stage impeller with one Shielded electric pump, after the pressurization of import liquid material all the way, the flow points conveying different at least two operating pressure is containing solid slurry.

Background technique

Shielded electric pump described herein refers to shielding electric centrifugal pump.

In direct hydrogenation liquefaction of coal reaction process CTL, straight using the up flow type suspension bed coal hydrogenation of Liquid product recycle Liquefying reactor system CTL is met, conveys the product slurry adverse current Returning reactor entrance containing solid using circulating pump RL-PUMP, In general, in " one-to-one " transportation scheme a flow points, such as liquid in reactor RK will be delivered to after pressurizeing by slurry all the way The slurries of collection cups discharge are after circulating pump RL-PUMP pressurization, Returning reactor RK entrance cyclic process.

With the progress of direct hydrogenation liquefaction of coal reaction process CTL technology, the intermediate pulp of the reaction process is produced There are the delivery requirements of " a pair two or one-to-many " in the pressurized delivered process of object or final product slurry, such as anti-using 3 3 grades of direct hydrogenation liquefaction of coal reaction process CTL for answering device, need the product slurry by the second hydrogenator R2 to convey and shunt It returns to the first hydrogenator R1 for the branch material of three whereabouts: the first via and returns to second as long circulating slurry, the second tunnel Hydrogenator R2 is sent to third reactor as short circulation slurry, third road as 3 order reaction raw material slurries, at this point, have with Lower two kinds of conventional techniques are available:

1. scheme one, since high pressure-temperature shielded electric pump is expensive, in order to reduce investment outlay, after being pressurizeed using pump Pipe-line system is divided into three tunnels and removes 3 workflow positions respectively, and the lift of such No. 3 discharge is identical and can only meet H-Max That all the way, therefore energy consumption is high, and wherein there are larger residues, these remaining lifts will be used as slurry stream for the lift of 2 road slurries The erosion of the component for having restriction effect in road, abrasion power are consumed, and usually consumption is in throttling element such as flow control valve valve On core, due to slurry solids concentration height, the control valve core service life is very short, to influence the accuracy of flow control and steady Degree threatens the stabilization and safety of device production；

2. scheme two uses 3 shielded electric pumps using " one-to-one " transportation scheme, system complex, investment is huge, takes up an area face Product is big.

For the direct hydrogenation liquefaction of coal reaction process CTL, the shortcomings that in order to eliminate above-mentioned 2 kinds of schemes, the present invention is set Want using the shielded electric pump for having 2 or multiple and different lift leakage fluid drams, the flow points conveying different to 2 or multiple operating pressures Containing solid slurry, the shielded electric pump of 2 or 3 different lifts is combined the advantage is that: being equivalent to, it is high that price can be reduced The number of units and its corollary system of expensive high pressure-temperature shielded electric pump can export lift optimization to significantly reduce investment outlay The slurries material containing solid-liquid that avoids lift excessively high denude too quickly, erosion runner throttle part, electric energy can also be saved, can also be saved Occupied area and mounting cost.

Imagination of the invention is: the centrifugal pump APUMP of at least two difference lift leakage fluid dram is provided with, in the pump of centrifugal pump 2 grades or multi-stage impeller are arranged in chamber, and the low lift discharge gate being connected to flow channel space between impeller and its buffering commutating zone are set, The high lift discharge gate being connected to afterbody impeller drain flow channel space and its buffering commutating zone are set, to import liquid material all the way Contain liquid material to the different flow points conveying of at least two operating pressure after pressurization.

Centrifugal pump of the present invention is suitable for conveying containing solid-liquid particularly suitable for shielded electric pump；Have designed according to this invention The high temperature and pressure of 2~3 different lift leakage fluid drams shields electric centrifugal pump, right when being used for direct hydrogenation liquefaction of coal reaction process All the way after material pressurization, the flow points conveying different at least two operating pressure is containing solid slurry.

Liquid material pressurization " a pair two or one-to-many " transportation system that the present invention can construct concise flow, save energy consumption.

Only 2 grades of the use of one liquid material of discharge or the centrifugal pump of multi-stage impeller such as shield electric centrifugal pump, belong to it is conventional from Heart pump.

Such as Chinese patent CN201650761U easy gasifying medium backpulsing multi-stage shield pump, Chinese patent CN201650764U cantilever type multi-stage canned motor pump, Chinese patent CN202417953U convey the multi-stage shield pump of easy gasifying medium, Its multistage pump portion includes suction side, pump housing seat, multistage pump pump head composition；Multistage pump pump head is by multiple impellers, guide vane, suction side Middle housing composition between pump housing seat.

A kind of internal pressurization type multi-stage shield pump for conveying easy gasifying medium of Chinese patent CN202659519U, multistage pump Part includes suction side, pump housing seat, multistage pump pump head composition；Multistage pump pump head is by multiple impellers, guide vane, suction side and pump housing seat Between middle housing composition, using unilateral opposed type arrange 2 grades or multi-stage impeller.

A kind of Multistage shielding pump configuration of Chinese patent CN205638951U, multistage pump portion include suction side, pump housing seat, Multistage pump pump head composition；Multistage pump pump head is made of the middle housing between multiple impellers, guide vane, suction side and pump housing seat, is adopted 2 grades or multi-stage impeller are arranged with bilateral opposed type (symmetrical expression).

The centrifugal pump proposed by the present invention for having at least two difference lift drain to put mouth, similar technology have not been reported.

The shielding electric centrifugal pump proposed by the present invention for having at least two difference lift drain to put mouth, similar technology have no Report.

The high temperature and pressure shielding electric centrifugal pump proposed by the present invention for thering is at least two difference lift drain to put mouth, it is similar Technology has not been reported.

It is proposed by the present invention there is at least two difference lift drain to put mouth hydrocarbon material hydrogenation process shielding it is electronic from Heart pump, similar technology have not been reported.

The direct hydrogenation liquefaction of coal reaction process slurry conveying proposed by the present invention for thering is at least two difference lift drain to put mouth High temperature and pressure shields electric centrifugal pump, and similar technology has not been reported.

The first object of the present invention is 2 grades or centrifugal multistage pump multiple centrifugal pump for proposing to have at least two difference lift leakage fluid dram.

The second object of the present invention is the shielding electric centrifugal pump for proposing to have at least two difference lift leakage fluid dram.

The third object of the present invention is to propose to have the high temperature and pressure shielding electric centrifugal pump of 2 different lift leakage fluid drams.

The fourth object of the present invention is that the hydrocarbon material hydrogenation process for proposing to have at least two difference lift leakage fluid dram is used High temperature and pressure shields electric centrifugal pump.

The fifth object of the present invention is to propose have the direct hydrogenation liquefaction of coal of at least two difference lift leakage fluid dram to react Journey slurry conveys high temperature and pressure and shields electric centrifugal pump.

Summary of the invention

The present invention has 2 grades or centrifugal multistage pump multiple centrifugal pump of at least two difference lift leakage fluid dram, it is characterised in that comprising with lower part Point:

Centrifugal pump APUMP is provided at least two difference lift leakage fluid dram, and 2 grades or multi-stage impeller are arranged in pump chamber, if The liquid material entrance IN of pump chamber is set, the low lift discharge gate LPN being connected to flow channel space between impeller, setting and afterbody are set The high lift discharge gate HPN of impeller drain flow channel space connection, to different at least two operating pressure after the pressurization of import liquid material Flow points convey liquid material.

Centrifugal pump APUMP of the present invention, in general, the low lift discharge being connected to flow channel space between impeller is arranged in pump portion Mouth LPN and low lift discharge buffer commutating zone LPDV.

Centrifugal pump APUMP of the present invention, in general, the height being connected to afterbody impeller drain flow channel space is arranged in pump portion Lift discharge gate HPN and high lift discharge buffer commutating zone HPDV.

The arrangement of centrifugal pump APUMP of the present invention, can a kind in following manner:

1. horizontal arrangement, rotor axis of electric are horizontally disposed；

2. being in tilted layout, rotor is in tilted layout, and motor side absolute altitude is higher than pump chamber side absolute altitude；

3. being in tilted layout, rotor is in tilted layout, and motor side absolute altitude is lower than pump chamber side absolute altitude；

4. vertical, rotor is arranged vertically, and motor is located on pump chamber；

5. vertical, rotor is arranged vertically, and motor is located under pump chamber.

Centrifugal pump APUMP of the present invention arranges the purposes of the bushing of pump chamber cavity wall in pump chamber, can in following 1 Kind is several:

1. erosion resistance, abrasion bushing；

2. corrosion-resistant bushing；

3. heat-resisting bushing；

4. low temperature resistant bushing；

5. the positioning bushing of other components.

Centrifugal pump APUMP of the present invention arranges feed liquor nozzle inner wall bushing and/or drain connection inner wall bushing in pump chamber Purposes, can a kind or several in following:

1. erosion resistance, abrasion bushing；

2. corrosion-resistant bushing；

3. heat-resisting bushing；

4. low temperature resistant bushing；

5. the positioning bushing of other components.

Centrifugal pump APUMP of the present invention arranges that 2 grades or multi-stage impeller, at least certain one stage impeller can be prepared in pump chamber Inducer.

Centrifugal pump APUMP of the present invention arranges the arrangement of 2 grades or multi-stage impeller in pump chamber, can be selected from following side 1 kind in formula:

1. unilateral cantilevered arranges 2 grades or multi-stage impeller；

2. unilateral side has 2 grades of brace type arrangement or multi-stage impeller, supporting element to be made of bearing and bearing holder (housing, cover), bearing holder (housing, cover) is fixed Positioning；

3. 2 side cantilevereds arrange 2 grades or multi-stage impeller；

4. unilateral opposed type arranges 2 grades or multi-stage impeller；

5. bilateral opposed type arranges 2 grades or multi-stage impeller.

Centrifugal pump APUMP of the present invention arranges that 2 grades or multi-stage impeller, arrangement can be single-sided arrangement in pump chamber, It pumps section and uses pump cover and pump chamber pedestal, the central part of pump chamber pedestal protracts to form extension column and boss, shielding motor rotor The front end portion that axis enters in pump case after the extension column and boss of pump chamber pedestal is used as the axis of installation impeller of pump；

Process fluid is pressurizeed by entering first order impeller after feed inlet, charging catheter；Low pressure intermediate fluid is divided at least 2 Road, the impeller feed inlet of first via low pressure intermediate liquid stream downstream, the second tunnel low pressure intermediate fluid reverse flow pass through charging drain The low pressure drain buffering rectification room LPDV of pipe outer wall and pump chamber composition, is discharged pump chamber by low pressure leakage fluid dram；

First via low pressure intermediate fluid becomes high pressure liquid after the pressurization of the impeller in downstream or high pressure intermediate fluid throws away impeller cavity, The high pressure drain buffering rectification room HPDV being made up of pump chamber pedestal and pump case, is discharged pump chamber by high pressure leakage fluid dram；

In the space that low pressure drain buffers between rectification room LPDV and high pressure drain buffering rectification room HPDV, arrangement centrifugation Pump the impeller of APUMP.

Centrifugal pump APUMP of the present invention, can be shielding electric centrifugal pump, can be convey high temperature liquid material shielding it is electronic Centrifugal pump can be the shielding electric centrifugal pump of conveying high-pressure liquid material, can be conveying high temperature and pressure liquid material shielding it is electronic from Heart pump.

The liquid material conveyed in the pump case of centrifugal pump APUMP of the present invention, can be containing poisonous component or containing corrosive component or Material containing volatile components or containing easy condensation component or containing solid component or the bubble containing part.

The liquid material of centrifugal pump APUMP conveying of the present invention, can be high temperature, the high pressure coal of direct hydrogenation liquefaction of coal reaction process Liquefy intermediate product slurries or final product slurry, operating condition are as follows: temperature is 390~480 DEG C, pressure be 4.0~ 38.0MPa, solid concentration are 5~55%.

Centrifugal pump APUMP of the present invention is shielding electric centrifugal pump, and shield electric machine can be wet type shield electric machine or dry type Shield electric machine.

Centrifugal pump APUMP of the present invention be shielding electric centrifugal pump, shield electric machine can be the shield electric machine with heat shielding or Without the shield electric machine of heat shielding.

Centrifugal pump APUMP of the present invention is shielding electric centrifugal pump, and auxiliary liquid FZL input system can be set；It is described auxiliary Liquid FZL is helped, purposes is a kind of flushing liquor, for preventing the intracorporal process fluid of pump case from sealing in the cavity of shielded electric pump, The operating pressure of auxiliary liquid input system is greater than the operating pressure of the intracorporal process fluid of pump case, and at least part is made to assist liquid Body FZL is entered in pump case by runner to be mixed with process fluid and pump chamber is discharged with process fluid；

The lubricating fluid of shield electric machine cavity and/or the grouting socket E-K1 of coolant liquid EL is arranged in the shield electric machine used；Institute Lubricating fluid and/or coolant liquid EL are stated, a kind of liquid for referring to that the rotor and cavity as shield electric machine are cooling, lubricating；

The lubricating fluid and/or coolant liquid EL of shield electric machine cavity are discharged for preventing auxiliary liquid FZL and/or pump housing Interior liquid flows into shield electric machine cavity；

In general, the operating pressure of shield electric machine inside cavity liquid domain of the existence is greater than pump when shield electric machine works normally The operating pressure of the intracorporal process fluid of shell makes at least also greater than the operating pressure of the fluid in shielded electric pump auxiliary liquid FZL A part of EL is entered in auxiliary liquid system by runner is mixed into mixed liquor EL-FZL with auxiliary liquid FZL, at least part Mixed liquor EL-FZL is entered in pump case by runner to be mixed with process fluid, to realize setting for shield electric machine inside cavity liquid It changes；

In general, process fluid enters the pump housing of shielded electric pump from process liquid inlets, flows through leaf when shielded electric pump works Wheel receives the energy of impeller transmitting, then becomes the technique stream after boosting from the pump housing that Process fluid outlet leaves shielded electric pump Body；Process fluid after boosting includes at least part auxiliary liquid FZL.

Centrifugal pump APUMP of the present invention is shielding electric centrifugal pump, includes at least the first basic module pump housing and second substantially Shield components motor may use third basic module connector；

When using connector, connector one end is docked with pump case, and the connector other end is docked with shield electric machine, shielding electricity The front end portion that the axis of machine rotor enters in pump case after connector is used as the axis of installation impeller of pump.

Centrifugal pump APUMP of the present invention is shielding electric centrifugal pump；

In the shielded motor cavity, motor stator and rotor gap in electric machine casing are flowed through at least partially Cooling-lubricant DJL, also flow through the outer cold house of half way of motor stator；

In the inside of the high temperature section of shielded motor shell, constitutes power supply machine rotor cooling-lubricant DJL and circulate back Ebb interval is crossed on road, while the interior cold house of the outer cold house of the half way for being used as motor stator, electric machine casing high temperature section.

The shielded electric pump, the operating condition of the inlet process medium of pump housing can be with are as follows: temperature is -150~650 DEG C, pressure be 0.1~40.0MPa, pump chamber entrance liquid material volume flow rate is 0.1~10000m³/h；Its impeller of pump is to processing medium Applying energy makes 0.01~5.0MPa of its pressure increase；Its impeller of pump group uses 2~20 impellers of serial operation.

The processing medium conveyed in the pump case of centrifugal pump APUMP of the present invention, can be direct hydrogenation liquefaction of coal reaction process High temperature, high-pressure slurry, operating condition are as follows: temperature is 370~500 DEG C, pressure is 4.0~38.0MPa, solid concentration 5 ~55%, pump chamber entrance liquid material volume flow rate is 5.0~10000m³/h；Its impeller of pump, which applies energy to process fluid, makes its pressure Power increases by 0.10~1.5MPa；Its impeller of pump group uses 2~5 impellers of serial operation.

Centrifugal pump APUMP of the present invention, can be vertical, and motor side is located at pump end lower part；In pump chamber arrange 2 grades or Multistage pressuring machine process；Every grade of pressure process uses at least one impeller, and an exterior liquid is discharged and leaves the pump housing；

The pump chamber of centrifugal pump APUMP, by comprising at the top of hemispherical pump cover pump cover and pump chamber pedestal surround, in pump cover The feed openings of level-one pressure process are arranged in top center, and the inner wall at the top of hemispherical pump cover is led with one stage impeller charging Pipe outer wall, one stage impeller outer shells on air diffuser form level-one drain buffer area, and eccentric position setting level-one is pressurized outer at the top of pump cover Other exterior liquid KX openings, the arrangement of the opening of other exterior liquid KX, choosing is arranged in the cylinder segment of pump cover in drain opening 1 kind or several in following:

1. being located at the outside of pressurizing propeller room, exterior liquid KX commutating zone and the supercharging impeller room of exterior liquid KX spatially have There is coordination；

2. being located at the downside of pressurizing propeller room, pressurizing propeller room is located at that the extension column of pump chamber pedestal, protract boss at this time Top；The rectification in the extension post jamb face, extension boss wall surface composition exterior liquid KXD of the shell ring inner wall and pump chamber pedestal of pump cover lower section Area.

The processing medium of centrifugal pump APUMP conveying of the present invention can be high temperature, the height of direct hydrogenation liquefaction of coal reaction process Press coal liquefaction intermediate product or final product slurry, operating condition are as follows: temperature is 390~480 DEG C, pressure be 4.0~ 38.0MPa, solid concentration are 5~55%.

Detailed description of the invention

Attached drawing is to draw to describe the present invention, but cannot limit specific constructive form of the invention, work side Formula, application field.

Fig. 1 is that conventional direct hydrogenation liquefaction of coal reaction process floating bed hydrogenation reactor wet type shield electric machine drives The structural schematic diagram of single-stage impeller slurry circulating pump.

Fig. 2 is the pump end structure detail drawing of slurry circulating pump shown in Fig. 1.

As shown in Figure 1, direct hydrogenation liquefaction of coal floating bed hydrogenation reactor circulating pump, belongs to the motor position of vertical Wet type shielded electric pump in lower end, impeller cavity overcurrent processing medium be loop slurry product, design pressure up to 35MPa, set Temperature is counted up to 485 DEG C；Its motor cavity circulation cooling lubrication medium be high clean degree lubricating oil (be also referred to as isolated oil, lubricating oil, Circulating cooling liquid), design pressure is usually 20~40 DEG C up to the design temperature that 35MPa, circulating cooling liquid enter machine cavity.

As shown in Figure 1, wet type shielded electric pump include pump end (or pump portion), wet type shield electric machine end (or wet type shielding electricity Machine part).

As shown in Figure 1, there is pump chamber to come from including the space enclosed by the temperature end bread of pump case 10, heat shielding 2101 at pump end The loop slurry product of reactor enters one stage impeller by the inlet port 1P1 at 10 top of pump case and feeds flow channel space AV1, passes through One stage impeller diversion pipe AP flows into one stage impeller diffuser 15, applies subsequently into 16 entrance of one stage impeller impeller by impeller 16 Add and impeller 16 is discharged after energy, after the water diversion part by 15 lower part of diffuser, into pump housing endophragm and 7 outer wall of diversion pipe, expands Pump case 10 is discharged by discharge outlet 1P2 after the drain flow channel space AV2 current stabilization of scattered 15 outer wall of device composition, passes through the pipeline circulatory system Returning reactor.As shown in Figure 1,61 be anti-pollution structure.

As shown in Figure 1, the central part of pump chamber pedestal protracts to form extension column 31 and boss 32, the axis of shielding motor rotor The front end portion entered in pump case after the extension column 31 and boss 32 of pump chamber pedestal is used as the axis of installation impeller of pump.

As shown in Figure 1, space CV be 10 lower section inner wall of pump case and pump chamber base inner wall (surface including vertical rotor axis, Protract column 31 and boss 32 surface) composition liquid collecting zone belong to substantially static liquid flow zone under pump group working condition, therefore, Compared with metal solid, there is the heat-blocking action for reducing heat transfer rate, it is possible to reduce the total amount of heat that pump chamber is transmitted to heat shielding 2101, Conducive to the cooling load for reducing motor component.

As shown in Figure 1, motor side, including the space surrounded by electric machine casing 21, bottom head covers 22, changing outside the pump housing The circulation cooling oil of hot device enters electric machine casing from the circulating cooling oil-in 2P1 of motor bottom end cap, by the auxiliary of rotation Impeller 67 enters the rotor clearance between rotor 62 and motor stator 51 after pressurizeing, lubrication, cooling rotor are cooling Stator, circulation cooling oil upstream enter annular grease chamber 64 after top guide bearing 63, and electric machine casing is discharged by outlet 2P2. Outlet 2P2, positioned at the lower part of the heat shielding of the temperature end on the top of machine cavity 21.

As shown in Figure 1, from pump end transmitting heat, by behind the heat shielding part 2101 of electric machine casing to electric machine casing Lower part transmitting, the necking down structure of heat shielding has the function of reducing heat output, while outer side of heat shield forms a degree of nature Air-cooled effect.

As shown in Figure 1,103 be the kingbolt nut for connecting pump case 10 and heat shielding 2101,52 be motor stator upper end Anti-scouring structure, 65 be lower guide bearing, and 67 be thrust bearing, and 91 be junction box, and 92 be lead-out wire conductive contact, and 2252 be bottom cover Side kingbolt nut.

Fig. 3 is the 1 of the shielding electric centrifugal pump of 2 grades of impeller pressurizations of use that the present invention has 2 different lift leakage fluid drams The functional schematic of kind pump portion organization plan.

Fig. 4 is the pump end structure detail drawing of shielding electric centrifugal pump shown in Fig. 3.

The shielding electric centrifugal for thering are 2 grades of impellers of use of 2 different lift leakage fluid drams to pressurize of the invention as shown in Figure 3 Pump, for the slurries of 2 grades of impellers of direct hydrogenation liquefaction of coal reaction process floating bed hydrogenation reactor wet type shield electric machine driving Circulating pump, the difference with the technical solution of the shielding electric centrifugal pump of 1 grade of impeller pressurization of use of 1 leakage fluid dram shown in FIG. 1 Place is, increases second level impeller, using 2 different lift leakage fluid dram 1P2,1P3.

As shown in figure 3, autoreactor is carried out including the space enclosed by the temperature end bread of pump case 10, heat shielding 2101 in pump end Loop slurry product enters one stage impeller feed liquor flow channel space AV1 by the inlet port 1P1 at the top of pump case, by one stage impeller into Liquid diversion pipe AP flows into one stage impeller diffuser 15A, subsequently into one stage impeller 16A entrance after impeller 16A applies energy Impeller 16A is discharged as level-one boost fluid, after the water diversion part by the lower part diffuser 15A, is shunted into pump case fluid space For 2 tunnels, first via level-one boost fluid upstream enters low pressurized slurry commutating zone AV2, and pump case is discharged by discharge outlet 1P2 after current stabilization 10, process receiving point is gone by the pipeline circulatory system；Second tunnel level-one boost fluid, which flows down, enters intermediate flow channel BV1, crosses level-one Connection between impeller cavity pedestal 1CB and intermediate flow channel BV1 runner baffle BV1-P supported fluid BV1-P (such as connecting column or to open The connecting plate in hole), by diversion pipe BP, sencond stage impeller diffuser 15B is flowed into, passes through leaf subsequently into sencond stage impeller 16B entrance It takes turns after 16B applies energy and impeller 16B is discharged as two-stage supercharging liquid, after the water diversion part by the lower part diffuser 15B, into two Grade pressurization slurries commutating zone BV2, is discharged pump case 10 by discharge outlet 1P3 after current stabilization, goes process to receive by the pipeline circulatory system Point.

The 1st kind of pump portion organization plan of the invention, design feature are as shown in Figure 3:

1. foring " 1 into 2 goes out " draining function；

2. remaining space CV.

Fig. 5 is the 2 of the shielding electric centrifugal pump of 2 grades of impeller pressurizations of use that the present invention has 2 different lift leakage fluid drams The functional schematic of kind pump portion organization plan.

Fig. 6 is the pump end structure detail drawing of shielding electric centrifugal pump shown in Fig. 5.

The shielding electric centrifugal for thering are 2 grades of impellers of use of 2 different lift leakage fluid drams to pressurize of the invention as shown in Figure 5 Pump, for the slurries of 2 grades of impellers of direct hydrogenation liquefaction of coal reaction process floating bed hydrogenation reactor wet type shield electric machine driving Circulating pump, with it is shown in Fig. 3 shielding electric centrifugal pump technical solution the difference is that, by the extension column 31 of pump chamber pedestal After widening, becomes cylindrical body with boss 32, reduce most of volume of space CV, conducive to the bulky grain in process fluid is prevented Object is deposited in the CV of space.

Fig. 7 is the 3 of the shielding electric centrifugal pump of 2 grades of impeller pressurizations of use that the present invention has 2 different lift leakage fluid drams The functional schematic of kind pump portion organization plan.

Fig. 8 is the pump end structure detail drawing of shielding electric centrifugal pump shown in Fig. 7.

The shielding electric centrifugal for thering are 2 grades of impellers of use of 2 different lift leakage fluid drams to pressurize of the invention as shown in Figure 7 Pump, for the slurries of 2 grades of impellers of direct hydrogenation liquefaction of coal reaction process floating bed hydrogenation reactor wet type shield electric machine driving Circulating pump, with it is shown in Fig. 3 shielding electric centrifugal pump technical solution the difference is that:

1. two-stage supercharging slurries commutating zone BV2 is placed under the boss 32 of pump chamber pedestal, so as to significantly simplify The structure of road baffle BV1-P, diversion pipe BP, sencond stage impeller diffuser 15B in Fig. 3 are expanded using a sub-assembly sencond stage impeller Needs can be met by dissipating device 15B, so as to significantly simplify structure, convenient for manufacture, assembling, disassembly and maintenance replacement；

2. two-stage supercharging slurries commutating zone BV2 is placed under the boss 32 of pump chamber pedestal, so as to avoid using Fig. 3 In complicated two-stage supercharging slurries commutating zone BV2, constitute two-stage supercharging slurries with the commutating zone of streamlined flow field flow BV2；

3. widening 31 part of extension column of pump chamber pedestal to form boss 311, the bottom of boss 311 top surface and drain pipe 1P3 Along being substantially flush, reduce most of volume of space CV, conducive to preventing the large particle in process fluid to be deposited on space CV In.

Fig. 9 is the 4 of the shielding electric centrifugal pump of 2 grades of impeller pressurizations of use that the present invention has 2 different lift leakage fluid drams The functional schematic of kind pump portion organization plan.

Figure 10 is the pump end structure detail drawing of shielding electric centrifugal pump shown in Fig. 9.

The shielding electric centrifugal for thering are 2 grades of impellers of use of 2 different lift leakage fluid drams to pressurize of the invention as shown in Figure 9 Pump, for the slurries of 2 grades of impellers of direct hydrogenation liquefaction of coal reaction process floating bed hydrogenation reactor wet type shield electric machine driving Circulating pump, with it is shown in Fig. 7 shielding electric centrifugal pump technical solution the difference is that: the extension column 31 of pump chamber pedestal does not have Have and widen to form boss 311, pump chamber base top surface is lower than the bottom edge of drain pipe 1P3, remains most of volume of space CV, can It forms liquid collecting zone and belongs to substantially static liquid flow zone under pump group working condition, it is possible to reduce pump chamber transmits total to heat shielding 2101 Heat, conducive to the cooling load for reducing motor component.

In Fig. 1, Fig. 3, Fig. 5, Fig. 7, Fig. 9, the circulation cooling lubrication liquid in the gap between machine cavity internal rotor and stator Conventional flow direction be " bottom into upper go out ", it is of course also possible to use direction i.e. " the enterprising bottom that the flow direction being different from is such as opposite Out ", but the circulation cooling lubrication liquid after heating at this time is by motor room, and cooling effect is not optimal.

In Fig. 1, Fig. 3, Fig. 5, Fig. 7, Fig. 9, the shield electric machine shown is wet type shield electric machine, but the present invention can also make With dry type shield electric machine.

In Fig. 1, Fig. 3, Fig. 5, Fig. 7, Fig. 9, the shield electric machine shown is wet type shield electric machine and has heat shielding, but this hair The bright wet type shield electric machine or dry type shield electric machine that also can be used without the other structures of heat shielding.

In Fig. 3, Fig. 5, Fig. 7, Fig. 9, the diameter of the second level impeller shown is identical as the diameter of first order impeller, but In actual application, the diameter of second level impeller and the diameter of first order impeller can different such as diameters it is greater or lesser.

Specific embodiment

The present invention described in detail below.

Pressure of the present invention, refers to absolute pressure.

Concentration of component of the present invention is weight concentration i.e. mass concentration when not specified.

Hydrocarbon material of the present invention, including hydrocarbon powder such as coal, hydrocarbon liquid material such as inferior heavy oil.

Hydrocarbon material hydrogenation process of the present invention, can be direct hydrogenation liquefaction of coal reaction process, inferior heavy oil adds Hydrogen reaction process, kerosene are total to hydrogenation process.

Expanded bed reactor of the present invention is vertical up-flow reactor, and expanded bed reaction is belonged to when using catalyst Device；The vertical central axis upright for referring to working condition reactor after installing is in ground；Up flow type refers to reaction process object Material main body flow direction travels through reaction compartment or catalyst bed or the catalyst co-flow with uplink from bottom to top；Expanded bed Refer to that working condition catalyst bed is in swelling state, catalyst bed expansion ratio, which is defined as catalyst bed, has reaction former The ratio of the height CUH of the empty bed static condition of the maximum height CWH and catalyst bed of working condition when material passes through KBED, in general, referred to as slight expanded-bed when KBED is lower than 1.10, referred to as ebullated bed when KBED is between 1.25~1.55, and suspension bed It is considered as the expanded bed of most extreme form.

Back-mixing stream expanded bed reactor of the present invention refers to reaction zone or main reaction region using expanded bed reactor Mode of operation there are liquid stream back-mixings there is circulation fluid in other words；Back-mixing stream or circulation fluid refer to the intermediate production at flow points K At least part liquid phase XK-L in object XK or final product XK as the upstream reaction zone circulating fluid XK-LR return logistics XK, The reaction product of circulating fluid XK-LR flows through K point and is present among XK.The mode of formation back-mixing stream can be any appropriate Mode is such as arranged built-in inner ring flow cartridge, built-in outer ring flow cartridge, built-in liquid collecting cup+diversion pipe+circulating pump, external and follows Endless tube etc..

Hot high score device of the present invention, refers to the gas-liquid separation for separating hydrogenation reaction intermediate product or final product Equipment.

Two sections of the present invention or multi-stek hydrogenation method refer to comprising two conversion zones or multiple conversion zones plus hydrogen side Method.

A hydrogenation reaction section of the present invention refers to adding entering a hydrogenation process since hydrocarbon raw material to it Hydrogen product gas-liquid separation obtains at least one process section until generating the liquid product that oil forms by least part, comprising being somebody's turn to do The gas-liquid separation process of the hydrogenation reaction product of the hydrogenation process and this section of hydrogenation reaction section.Therefore, one-stage hydrogenation method, The process for referring to initial hydrocarbon feedstock only includes the stream of a hydrogenation reaction section and a hydrogenation products gas-liquid separation process Journey mode, a hydrogenation reaction section, can be used the hydrogenation reaction of 1 or 2 or more serial operation as needed Device, therefore number of reactors and form are not the foundation for determining conversion zone, the reaction step that one or some tandem reactors form Suddenly the hydrogenation reaction section completed in meaning could be formed with its product separator common combination.

Secondary hydrogenation method of the present invention refers to that the process of initial hydrocarbon feedstock includes liquid material processing flow For the flow model of serial operation formed " by two different hydrogenation processes and hydrogenation products gas-liquid separation process ", The logistics that middle at least part one-stage hydrogenation generates oil composition enters secondary hydrogenation reaction process.

Three sections of method of hydrotreating of the present invention refer to that the process of initial hydrocarbon feedstock includes liquid material processing flow For the flow model of serial operation formed " by three different hydrogenation processes and hydrogenation products gas-liquid separation process ", The logistics that middle at least part one-stage hydrogenation generates oil composition enters secondary hydrogenation reaction process, and at least part secondary hydrogenation is raw Logistics at oil composition enters three sections of hydrogenation processes.The flowage structure of the method for hydrotreating of more multistage, according to mentioned above principle class It pushes away.Multi-stek hydrogenation method, refer to initial hydrocarbon feedstock process include liquid material processing flow be serial operation " by The flow model of three or more different hydrogenation processes and hydrogenation products gas-liquid separation process " composition.

Three sections of method of hydrotreating, it is serial operation that the process for referring to initial hydrocarbon feedstock, which includes liquid material processing flow, The flow model formed " by three different hydrogenation processes and hydrogenation products gas-liquid separation process ", according to this definition, It is obvious that the gas-liquid separation process of the difference section hydrogenation products, can independently carry out, can also partly or entirely combine into Row.

It is of the present invention like secondary hydrogenation method, the method for referring to being similar to secondary hydrogenation method, when back segment upper feeding When liquid phase flow ratio tends to infinity in the back-mixing liquid phase flow and upper feeding of back-mixing stream expanded bed reactor, it is considered as two sections and adds Hydrogen methods.

Hydrocarbon material hydrogenation reaction of the present invention, refer to hydrogen exist and pressurized conditions under, carbon containing, protium liquid The hydrogenation reaction that body and/or solid such as oil and/or coal occur, occurs hydrofinishing for its feedstock oil of hydrocarbon oil hydrogenation process and/or adds Hydrogen heat cracking reaction generates the product of at least part more low molecular weight, for its feed coal of direct hydrogenation liquefaction of coal reaction process The reactions such as generation thermosol is swollen, primary pyrolysis, the secondary thermal cracking of intermediate product, free radical stabilized hydrogenation, thermal condensation generate at least one Part normal boiling point is lower than 450 DEG C of hydrocarbon products.

Hydrocarbon material hydrogenation process of the present invention, typical example are that high temperature coal-tar floating bed hydrogenation deep refining is anti- Process, middle coalite tar floating bed hydrogenation heat cracking reaction process, direct hydrogenation liquefaction of coal reaction process, oily coal is answered to refine add altogether Hydrogen reaction process, petroleum based heavy fuel oils suspension bed or boiling bed hydrogenation cracking reaction process.

Hydrocarbon material hydrogenation reaction of the present invention, reaction product BASE-ARP, at least gas-liquid two-phase logistics, most feelings Condition belongs to gas, liquid, solid three-phase logistics.Hydrogenation reaction effluent ARP-X of the present invention is for being discharged hydrogenation reaction product BASE- ARP occurs in the form of 1 tunnel or 2 tunnels or multichannel material, is gas phase or liquid phase or gas-liquid mixed phase or gas-liquid-solid three-phase logistics.

Centrifugal shielded electric pump of the present invention refers to the centrifugal pump of shielded motor driving.

Shielded electric pump of the present invention is a kind of unprssurized pump, and impeller seals are full of in a pumped medium, drive electricity Machine rotor is sealed in belongs to a linker in itself similar in the operating pressure that a specific cooling and lubricating medium is full of Pressure vessel in, this pressure vessel only has static seal, with motor stator provide rotating excitation field drive rotor.This structure is cancelled The dynamic sealing device to environment for the rotary shaft that conventional centrifugal pump has, therefore can accomplish complete No leakage, used shielding Motor can be wet type shielded motor or dry type shielded motor, be widely used in refrigeration, air-conditioning, medicine, chemical industry, stone The fields such as oil.

Centrifugal shielded electric pump of the present invention, in general, impeller is mounted on overhanging end (the impeller of pump cavity of motor reel It is interior), impeller, pump shaft and rotor collectively constitute rotary part.Shielded electric pump of the present invention, impeller and shielding in pump case Rotor is coaxial, and for the needs of manufacture, assembling and maintenance, basic module includes at least the pump housing and shield electric machine, may be used also To include connector；When using connector, connector one end is docked with pump case, and the connector other end is docked with shield electric machine, The front end portion that the axis of shielding motor rotor enters in pump case after connector is used as the axis of installation impeller of pump.

Centrifugation rotating vane type shielded electric pump of the present invention is commonly referred to as the centrifugal pump of liquid immersion type shielded motor driving, Such as transporting oil oil immersed type shielded electric pump, convey boiler water immersion type shielded electric pump, it is characterised in that use " wet type " Stator, stator winding group are soaked in a liquid.Currently, the manufacturer of wet type shielded electric pump within Chinese territory, there is Hefei Anhui motor Technological development Co., Ltd, the electrical group in Harbin, the electronic canned motor pump Co., Ltd of HAYWARD TYLER etc..

Dry type shielded electric pump of the present invention is typically considered to what the appearance of wet type shielded electric pump developed later, does It is in place of the difference of formula shielded electric pump and wet type shielded electric pump using dry type shielded motor.In general, dry type shielded motor The inner surface of stator gets up to form stator can with non magnetic corrosion-resistant thin plate set isolation, outside dry type shielded motor rotor Surface gets up to form rotor shielding sleeve with non magnetic corrosion-resistant thin plate set isolation, and power (torque between stator and rotor) passes through Field of magnetic forece passes to rotor by stator；Stator can, rotor shielding sleeve are substantially pressure vessels, and method is leaned in the end of shielding Blue or welded structure realizes static seal, divides with by conveying liquid, stator ferrite core and rotor core is made not to weather, fixed It may be enriched using resin in sub- housing.Housing is manufactured by non magnetic, corrosion resistant high-strength metal material, is generally breathed out Family name (HastelloyC) alloy.Currently, the manufacturer of dry type shielded electric pump within Chinese territory, has the new Shanghai canned motor pump share in Hefei to have Limit company, Dalian Teikoku Canned Mortor Pump Co., Ltd, the electronic canned motor pump Co., Ltd of HAYWARD TYLER etc..

The wet type shielded electric pump of conveying high-pressure fluid, the stator winding group of the wet type shield electric machine used are liquid-immersed Formula, therefore the fixation kit of stator winding group can be non-pressure part, it is possible to using the thin metal plate processing and fabricating of thickness, Therefore its is light-weight, small in size, is easily assembled to, and in this way in the inside of wet type shield electric machine pressure-bearing shell, constitutes with can be convenient The inside and outside cooling gap of stator, or referred to as cooling chamber or cooling duct, the outer cold house of stator undertake electric machine casing, heat shielding simultaneously Main cooling task, cold house is cooling simultaneously in stator, rotor of lubrication motor and pump.Wet type shielded electric pump, because it is cooled down Function is more satisfactory, is also convenient for conveying high temperature fluid.

The dry type shielded electric pump of conveying high-pressure fluid, the stator winding group of the dry type shield electric machine used are in pressure resistance shielding In set, therefore the fixation kit of stator winding group is pressure part, it is necessary to using the thicker metal plate processing and fabricating of thickness, therefore its Weight is big, volume is big, is not easy to assemble, and in this way in the inside of dry type shield electric machine pressure-bearing shell, may be constructed the inside and outside of stator Cooling gap is still inconvenient.In general, dry type shielded electric pump is not provided with the outer cold house of stator, but be arranged heat shielding limit pump case to The heat output of motor housing, the coolant liquid of cold house is shifted in the heat that the close motor side of heat shielding transmits heat shielding in stator Realize the cooling of electric machine casing, it is evident that compared with wet type shielded electric pump, refrigerating function is poor, so to a certain extent Limit the high temperature range of its trandfer fluid.

Shielded electric pump of the present invention, for the needs of manufacture, assembling and maintenance, the structural master part of frog type plan of establishment is a variety of more Sample, at least following 2 kinds of typical scenarios:

1. three structural master part of frog type schemes, pump cover, shield electric machine fuselage, shield electric machine rear cover, pump body portion radial direction subdivision structure, Independent circulating pump pump body portion only includes pump cover in fact；Mount scheme is that the outlet of pump cover, entrance are docked with process pipe, Structure division of the shield electric machine shell close to pump housing one end serves as remaining structural member of pump case；

2. four structural master part of frog type schemes, pump cover, connector, shield electric machine fuselage, shield electric machine rear cover, pump body portion are radially cutd open Separation structure, connector one end is docked with pump cover, the other end is docked with shield electric machine fuselage.

Shielded electric pump of the present invention can also include the such as integrated cooler of other accessories as needed.

Cool component or the system of shielded electric pump body can be set in shielded electric pump of the present invention.

Shielded electric pump of the present invention, motor and the pump housing can share a unsplit frame.

Shielded electric pump of the present invention, the position of auxiliary liquid FZL input system can be in any suitable main part Any appropriate position, can the pump housing (not usually pump cover portion) and/or connector and/or cover it is suitable in motor body Position.

Shielded electric pump of the present invention, the lubricating fluid of shield electric machine cavity and/or the cloth set of coolant liquid EL input system It sets, it can be in any appropriate position of any suitable main part, the suitable position being usually located in shield electric machine fuselage and one As be located at shield electric machine fuselage the separate pump housing one end.

Shielded electric pump of the present invention can add blade at the main impeller back side for the medium containing particle, have discharge in time solid Body particle and prevent solid particle accumulate effect；Axial out-of-balance force can simultaneously reduced, conducive to the thrust axis for reducing setting The wear-out failure speed held is conducive to extend its service life.

Shielded electric pump of the present invention, when crossing the liquid that flow medium is high concentrated, solid, in order to extend pump housing flow passage Anti-wearing liner or wear-resisting shell can be used in the service life of part.

The intracorporal cooling liquid circulation of accessory impeller driving motor chamber can be arranged in motor part in shielded electric pump of the present invention Work, since accessory impeller is coaxial with main impeller, the axial force that accessory impeller generates can be used for the axial direction of balance portion impeller of pump generation Power.

The mounting means of shielded electric pump of the present invention, can be vertical, be also possible to horizontal arrangement.

The mounting means of vertical canned motor pump of the present invention, can be that motor is located above and the pump housing is located below, It can be that motor is located below and the pump housing is located above.

The mounting means of vertical canned motor pump of the present invention, motor are located below and the pump housing person of being located above, and are conducive to row The intracorporal gas of machine cavity, pump chamber out, to prevent gas build.

Shielded electric pump of the present invention, impeller form is mainly the form of centrifugal pump impeller, in a few thing Impeller can generate cavitation erosion, can install an inducer, the anti-cavitation characteristic of increasing pump additional before centrifugal impeller.

Shielded electric pump of the present invention, for the motor consumption that lowers consumption, can reduce between stator and rotor effective non-is led Magnetic gap reduces motor excitation current to reduce power consumption, improves the efficiency and power factor of shielded electric pump motor.It is a kind of The method that can be used is that metallic shield set is made of region magnetoelectricity anisotropic material or housing different zones are by magnetic Electrical anisotropy regulation processing, the regulation of magnetic conductivity anisotropy and the regulation of electric conductivity anisotropy.

For coal circulating pump that the coal slurry floating bed hydrogenation reactor of direct hydrogenation liquefaction of coal process CTL uses and Speech carries out online operating dynamic and measures extremely important, and since shielded electric pump rotor is all shielded by pump case, rotor displacement can not be surveyed Amount cannot directly judge whether rotor is eccentric or bending is even worn, since choma grinding, Bearing Grinding occurred in shielded electric pump The failures such as damage, worn out, the rotor locking of housing, these failures, which cause, to be caused parts damages to even result in pump group cannot to run, It, can be to avoid unnecessary excessive damage or extension accident if event generating process can be found in real time.Chinese patent ZL201010516186.8 nuclear reactor shielded electric pump operation troubles monitoring method and its monitoring system are that Chinese nuclear power research is set The fault characteristic value, simultaneously that one kind that meter institute proposes can monitor nuclear reactor shielded electric pump operating status on-line, extract shielded electric pump Under shielded electric pump abnormality can fault alarm nuclear reactor shielded electric pump operation troubles monitoring method and its monitoring system. The shielded electric pump operation troubles monitoring method and its monitoring system, can be with combined application of the present invention.

Shielded electric pump of the invention, can be applied in combination application No. is 201710063971.4 setting two kinds of auxiliary liquids it is defeated Enter the technical solution of the shielded electric pump of system.

The centrifugal pump of the present invention for having at least two difference lift drain to put mouth, can be used first auxiliary liquid FZL, purposes are a kind of flushing liquors, for preventing the intracorporal processing medium of pump case from sealing in the cavity of shielded electric pump, therefore, the The operating pressure of one auxiliary liquid FZL input system is centainly greater than the operating pressure of the intracorporal processing medium of pump case；Certainly First auxiliary liquid FZL is also the lubricating fluid and coolant liquid of the bearing flowed through downstream, for lubricating and cooling down, therefore, group Boiling range, viscosity-temperature characteristics, stability, corrosivity, solid impurity content, the solid impurity partial size etc. divided is both needed to meet use occasion Long-term running requirements.The centrifugal pump of the present invention for having at least two difference lift drain to put mouth, may be constructed relatively independent stream Rinse-system BWS, shield electric machine circulating cooling system ALS to impeller of pump chamber；Oil for direct hydrogenation liquefaction of coal process CTL When coal slurry reactor circulating pump, to the motor cycle cooling system of existing shielded electric pump, the rinse-system of impeller of pump chamber is flowed to Coupled system decoupling, consumption of lubricating oil can reduce by 70~95%, 1,000,000 tons/year of ctl response devices with separate unit circulating pump save transport About 5,000,000 yuan/year of row cost；BWS can enter the pump of impeller of pump chamber with the self-produced larger amount of cheap flushing oil of factory In defeated process liquid, the lubricating oil of ALS can independently use big cycle volume with increase cooling capacity and meanwhile maintain one it is low-level The series connection of safety dumping amount enters BWS and eventually enters into impeller of pump chamber, and double auxiliary liquid input systems can economically realize shielding electricity The cooling of pump group long-term safety operating needs, lubrication, flushing, seal request.Self-produced cheap of factory can be used to rush for BWS Washing oil, for example the conventional boiling range for adding hydrogen grading process from liquefied coal coil is 260~330 DEG C of distillates or conventional boiling range is 300~360 DEG C of distillates or conventional boiling range are 360~420 DEG C of distillates, and dust content is lower, thermal stability is more preferable, is more suitable for As flushing oil, light bavin is converted into the reaction of DCL/Direct coal liquefaction suspension bed reaction process rear portion packet distribution heat cracking and hydrogenation The naphtha of oil and Gao Fangqian.

Shielded electric pump of the invention, can be applied in combination that application No. is 201710451303.9 electric machine casing inner stators with half The shield electric machine of the cold house Cheng Wai and its technical solution of shielded electric pump.

Shield electric machine and its shielding of the outer cold house of half way can be used in shielded electric pump of the present invention, electric machine casing inner stator Electric pump, compared with the whole outer cooling cell structure of stator, under the premise of retaining interior cold house's refrigerating function of electric machine casing high temperature section, Remain the good close fit function and resistance to deformation overall stiffness of the stator elements outside no stator in cooling cell structure；With stator No outer cooling cell structure is compared, and is increased interior cold house's refrigerating function of electric machine casing high temperature section, will be arranged in electric machine casing high temperature The coolant liquid opening of section is transferred to electric machine casing low-temperature zone, improves the safety of electric machine casing；It forms and takes into account motor component Cooling, close fit and resistance to deformation overall stiffness many index global optimization structure, conducive to temperature, the shake for expanding shielded electric pump Dynamic application range；It can be used as the high-temperature liquid of gas-liquid material up flow type direct hydrogenation liquefaction of coal reactor using the shielded electric pump of the motor High temperature, high pressure, the slurry circulation of the high solid concentration pump of phase product reflux system.

Shielded electric pump of the present invention, the coal slurry floating bed hydrogenation particularly suitable for direct hydrogenation liquefaction of coal process CTL are anti- The heat of the coal slurry floating bed hydrogenation reactor product of the coal circulating pump, direct hydrogenation liquefaction of coal process CTL of answering device to use is high The gas phase dedirt system that pressure separator or thermal high fractionating column use contains solid wash liquid circulating pump, direct hydrogenation liquefaction of coal mistake The liquid of the warm high-pressure separator bottom of the high pressure hot separator gas phase of the coal slurry floating bed hydrogenation reactor product of journey CTL adds The solvent of press pump or circulating pump, direct hydrogenation liquefaction of coal process CTL is oil boiling bed or up flow type slight expanded-bed hydrogenator makes Containing solid circulating pump, the charging that other hydrogenation processes use is high pressure, high temperature, the oil pump containing solid particle.

Guide vane can be set in centrifugal pump of the present invention, impeller outside.

The behind of centrifugal pump of the present invention, impeller can be fixed with balance ring.

The pump chamber of centrifugal pump of the present invention, refer to the installation impeller for process fluid boost process overcurrent, Guide vane, runner, drain cushion space functional space, can be the cavity in integrated pump cover and pump seat structural member, can be Cavity possessed by the sub-assembly that the intermediate pump chamber assembled between pump cover, pump seat, pump cover and pump seat is constituted.

Centrifugal pump of the present invention, pump chamber pedestal, in most cases and motor room front end or connector front end.

Characteristic of the invention is described below.

1. horizontal arrangement, rotor axis of electric are horizontally disposed；

1. erosion resistance, abrasion bushing；

2. corrosion-resistant bushing；

3. heat-resisting bushing；

4. low temperature resistant bushing；

5. the positioning bushing of other components.

1. erosion resistance, abrasion bushing；

2. corrosion-resistant bushing；

3. heat-resisting bushing；

4. low temperature resistant bushing；

5. the positioning bushing of other components.

1. unilateral cantilevered arranges 2 grades or multi-stage impeller；

3. 2 side cantilevereds arrange 2 grades or multi-stage impeller；

4. unilateral opposed type arranges 2 grades or multi-stage impeller；

5. bilateral opposed type arranges 2 grades or multi-stage impeller.

Claims

1. having 2 grades or centrifugal multistage pump multiple centrifugal pump of at least two difference lift leakage fluid dram, it is characterised in that include following part:

Centrifugal pump APUMP is provided at least two difference lift leakage fluid dram, and 2 grades or multi-stage impeller, setting pump are arranged in pump chamber The low lift discharge gate LPN being connected to flow channel space between impeller, setting and afterbody impeller is arranged in the liquid material entrance IN of chamber The high lift discharge gate HPN of drain flow channel space connection, to process different at least two operating pressure after the pressurization of import liquid material Point conveying liquid material.

2. centrifugal pump according to claim 1, it is characterised in that:

Centrifugal pump APUMP, in the low lift discharge gate LPN and low lift row that pump portion setting is connected to flow channel space between impeller Material buffering commutating zone LPDV.

3. centrifugal pump according to claim 1, it is characterised in that:

Centrifugal pump APUMP, in the pump portion high lift discharge gate HPN that is connected to afterbody impeller drain flow channel space of setting and High lift discharge buffers commutating zone HPDV.

4. centrifugal pump according to claim 1, it is characterised in that:

The arrangement of centrifugal pump APUMP, a kind in following manner:

1. horizontal arrangement, rotor axis of electric are horizontally disposed；

5. centrifugal pump according to claim 1, it is characterised in that:

Centrifugal pump APUMP, arranges the purposes of the bushing of pump chamber cavity wall in pump chamber, a kind or several in following:

1. erosion resistance, abrasion bushing；

2. corrosion-resistant bushing；

3. heat-resisting bushing；

4. low temperature resistant bushing；

5. the positioning bushing of other components.

6. centrifugal pump according to claim 1, it is characterised in that:

Centrifugal pump APUMP arranges the purposes of feed liquor nozzle inner wall bushing and/or drain connection inner wall bushing in pump chamber, is selected from down 1 kind or several in column:

1. erosion resistance, abrasion bushing；

2. corrosion-resistant bushing；

3. heat-resisting bushing；

4. low temperature resistant bushing；

5. the positioning bushing of other components.

7. centrifugal pump according to claim 1, it is characterised in that:

Centrifugal pump APUMP arranges that 2 grades or multi-stage impeller, at least certain one stage impeller prepare inducer in pump chamber.

8. centrifugal pump according to claim 1, it is characterised in that:

Centrifugal pump APUMP, the arrangement of 2 grades of arrangement or multi-stage impeller in pump chamber, a kind in following manner:

1. unilateral cantilevered arranges 2 grades or multi-stage impeller；

2. unilateral side has 2 grades of brace type arrangement or multi-stage impeller, supporting element to be made of bearing and bearing holder (housing, cover), bearing holder (housing, cover) is fixed fixed Position；

3. 2 side cantilevereds arrange 2 grades or multi-stage impeller；

4. unilateral opposed type arranges 2 grades or multi-stage impeller；

5. bilateral opposed type arranges 2 grades or multi-stage impeller.

9. centrifugal pump according to claim 1, it is characterised in that:

Centrifugal pump APUMP, arranges 2 grades or multi-stage impeller in pump chamber, and arrangement is single-sided arrangement, pump section using pump cover and Pump chamber pedestal, the central part of pump chamber pedestal protract to form extension column and boss, and the axis of shielding motor rotor passes through pump chamber pedestal Extension column and boss after enter pump case in front end portion as install impeller of pump axis use；

Process fluid is pressurizeed by entering first order impeller after feed inlet, charging catheter；Low pressure intermediate fluid is divided at least 2 tunnels, The impeller feed inlet of first via low pressure intermediate liquid stream downstream, the second tunnel low pressure intermediate fluid reverse flow is by feeding outside catheter The low pressure drain buffering rectification room LPDV of wall and pump chamber composition, is discharged pump chamber by low pressure leakage fluid dram；

First via low pressure intermediate fluid becomes high pressure liquid after the pressurization of the impeller in downstream or high pressure intermediate fluid throws away impeller cavity, passes through The high pressure drain buffering rectification room HPDV of pump chamber pedestal and pump case composition, is discharged pump chamber by high pressure leakage fluid dram；

In the space that low pressure drain buffers between rectification room LPDV and high pressure drain buffering rectification room HPDV, centrifugal pump is arranged The impeller of APUMP.

10. centrifugal pump according to claim 1, it is characterised in that:

Centrifugal pump APUMP is shielding electric centrifugal pump.

11. centrifugal pump according to claim 1, it is characterised in that:

Centrifugal pump APUMP is the shielding electric centrifugal pump for conveying high temperature liquid material.

12. centrifugal pump according to claim 1, it is characterised in that:

Centrifugal pump APUMP is the shielding electric centrifugal pump of conveying high-pressure liquid material.

13. centrifugal pump according to claim 1, it is characterised in that:

Centrifugal pump APUMP is the shielding electric centrifugal pump for conveying high temperature and pressure liquid material.

14. centrifugal pump according to claim 1, it is characterised in that:

The liquid material conveyed in the pump case of centrifugal pump APUMP, be containing poisonous component or containing corrosive component or containing volatile components or Material containing easy condensation component or containing solid component or the bubble containing part.

15. centrifugal pump according to claim 1, it is characterised in that:

The liquid material of centrifugal pump APUMP conveying is the high temperature of direct hydrogenation liquefaction of coal reaction process, high pressure coal liquefaction intermediate product slurry Liquid or final product slurry, operating condition are as follows: temperature is 390~480 DEG C, pressure is 4.0~38.0MPa, solid concentration 5 ~55%.

16. centrifugal pump according to claim 1, it is characterised in that:

Centrifugal pump APUMP is shielding electric centrifugal pump, and shield electric machine is wet type shield electric machine or dry type shield electric machine.

17. centrifugal pump according to claim 1, it is characterised in that:

Centrifugal pump APUMP is shielding electric centrifugal pump, and shield electric machine is the shield electric machine with heat shielding or the shielding without heat shielding Motor.

18. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 The centrifugal pump, it is characterised in that:

Centrifugal pump APUMP is shielding electric centrifugal pump, and auxiliary liquid FZL input system is arranged；The auxiliary liquid FZL is used Way is a kind of flushing liquor, for preventing the intracorporal process fluid of pump case from sealing in the cavity of shielded electric pump, auxiliary liquid input system The operating pressure of system is greater than the operating pressure of the intracorporal process fluid of pump case, and at least part auxiliary liquid FZL is made to pass through runner It is mixed in into pump case with process fluid and pump chamber is discharged with process fluid；

The lubricating fluid of shield electric machine cavity and/or the grouting socket E-K1 of coolant liquid EL is arranged in the shield electric machine used；The profit Synovia and/or coolant liquid EL, a kind of liquid for referring to that the rotor and cavity as shield electric machine are cooling, lubricating；

The lubricating fluid and/or coolant liquid EL of shield electric machine cavity are discharged for preventing liquid in auxiliary liquid FZL and/or pump housing Body flows into shield electric machine cavity.

19. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 The centrifugal pump, it is characterised in that:

The lubricating fluid and/or coolant liquid EL of shield electric machine cavity are discharged for preventing liquid in auxiliary liquid FZL and/or pump housing Body flows into shield electric machine cavity；

When shield electric machine works normally, the operating pressure of shield electric machine inside cavity liquid domain of the existence is greater than the intracorporal work of pump case The operating pressure of skill fluid keeps at least part EL logical also greater than the operating pressure of the fluid in shielded electric pump auxiliary liquid FZL It crosses runner and enters in auxiliary liquid system and be mixed into mixed liquor EL-FZL, at least part mixed liquor EL- with auxiliary liquid FZL FZL is entered in pump case by runner to be mixed with process fluid, to realize the displacement of shield electric machine inside cavity liquid；

When shielded electric pump works, process fluid enters the pump housing of shielded electric pump from process liquid inlets, flows through impeller and receives leaf The energy of transmitting is taken turns, then becomes the process fluid after boosting from the pump housing that Process fluid outlet leaves shielded electric pump；Boosting Process fluid afterwards includes at least part auxiliary liquid FZL.

20. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 The centrifugal pump, it is characterised in that:

Centrifugal pump APUMP is shielding electric centrifugal pump, includes at least the first basic module pump housing and the second basic module shielding electricity Machine may use third basic module connector；

When using connector, connector one end is docked with pump case, and the connector other end is docked with shield electric machine, and shield electric machine turns The front end portion that the axis of son enters in pump case after connector is used as the axis of installation impeller of pump.

21. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 The centrifugal pump, it is characterised in that:

Centrifugal pump APUMP is shielding electric centrifugal pump；

In the shielded motor cavity, the cold of motor stator and rotor gap in electric machine casing is flowed through at least partially But lubricating fluid DJL also flows through the outer cold house of half way of motor stator；

In the inside of the high temperature section of shielded motor shell, constitutes power supply machine rotor cooling-lubricant DJL and circulate circuit Ebb interval is crossed, while the interior cold house of the outer cold house of the half way for being used as motor stator, electric machine casing high temperature section.

22. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 The centrifugal pump, it is characterised in that:

Centrifugal pump APUMP is shielding electric centrifugal pump；

The shielded electric pump, the operating condition of the inlet process medium of pump housing are as follows: temperature is -150~650 DEG C, pressure is 0.1~40.0MPa, pump chamber entrance liquid material volume flow rate are 0.1~10000m³/h；Its impeller of pump applies energy to processing medium Make 0.01~5.0MPa of its pressure increase；Its impeller of pump group uses 2~20 impellers of serial operation.

23. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 The centrifugal pump, it is characterised in that:

The processing medium conveyed in the pump case of centrifugal pump APUMP is the high temperature of direct hydrogenation liquefaction of coal reaction process, high-pressure slurry, Its operating condition are as follows: temperature is 370~500 DEG C, pressure is 4.0~38.0MPa, solid concentration is 5~55%, pump chamber enters oral fluid Material volume flow rate is 5.0~10000m³/h；Its impeller of pump to process fluid apply energy make its pressure increase 0.10~ 1.5MPa；Its impeller of pump group uses 2~5 impellers of serial operation.

24. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 The centrifugal pump, it is characterised in that:

Centrifugal pump APUMP, vertical, motor side are located at pump end lower part；2 grades or multistage pressuring machine process are arranged in pump chamber；Institute Every grade of pressure process is stated using at least one impeller, an exterior liquid is discharged and leaves the pump housing；

The pump chamber of centrifugal pump APUMP, by comprising at the top of hemispherical pump cover pump cover and pump chamber pedestal surround, at the top of pump cover The feed openings of level-one pressure process are arranged in center, outside the inner wall and one stage impeller feed conduit at the top of hemispherical pump cover Wall, one stage impeller outer shells on air diffuser form level-one drain buffer area, and eccentric position setting level-one is pressurized exterior liquid at the top of pump cover Other exterior liquid KX openings are arranged in the cylinder segment of pump cover in opening, and the arrangement of the opening of other exterior liquid KX is selected from down 1 kind or several in column:

1. being located at the outside of pressurizing propeller room, the supercharging impeller room of exterior liquid KX commutating zone and exterior liquid KX spatially have simultaneously Column relationship；

2. being located at the downside of pressurizing propeller room, pressurizing propeller room is located at the top of the extension column of pump chamber pedestal, the boss that protracts at this time； The shell ring inner wall and the extension post jamb face of pump chamber pedestal, extension boss wall surface of pump cover lower section form the commutating zone of exterior liquid KXD.

25. the centrifugal pump according to claim 24, it is characterised in that:

The processing medium of centrifugal pump APUMP conveying is the high temperature of direct hydrogenation liquefaction of coal reaction process, high pressure coal liquefaction centre production Object or final product slurry, operating condition are as follows: temperature is 390~480 DEG C, pressure is 4.0~38.0MPa, solid concentration 5 ~55%.