CN115898885A - Double-suction self-balancing multistage pump - Google Patents
Double-suction self-balancing multistage pump Download PDFInfo
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Abstract
The invention relates to a double-suction self-balancing multistage pump, which comprises: the pump comprises a pump body, a cylinder-surrounding pressure-stabilizing cavity, a main suction channel, a composite outlet channel, a middle partition body and a pre-buried steel structure seat, wherein a main impeller pressurizing cavity and an auxiliary impeller pressurizing cavity are symmetrically arranged in the pump body, and the cylinder-surrounding pressure-stabilizing cavity is arranged outside the auxiliary impeller pressurizing cavity; the main suction port is communicated with the pressurizing cavity of the main impeller; the composite outlet channel is arranged in the middle of the pump body, the partition body partitions the main impeller pressurizing cavity, the auxiliary impeller pressurizing cavity and the annular cylinder pressure stabilizing cavity, and the embedded steel structure seat is arranged below the pump body and is in bolted connection. According to the invention, the medium in the main impeller pressurizing cavity flows out in an up-down symmetrical manner, the auxiliary impeller pressurizing cavity and the main impeller pressurizing cavity form a bilateral symmetrical flow direction, the rotor part of the pump has better balance in the axial direction and radial direction in the working process, the phenomenon of surging cannot occur in the process of conveying high-temperature medium by the whole pump, the whole structure is compact, the attractiveness is good, and the stability of the operation of the pump is excellent.
Description
Technical Field
The invention belongs to the field of self-balancing pumps, and particularly relates to a double-suction self-balancing multistage pump.
Background
The multistage pump is widely applied to the fields of conveying normal temperature media in factories, municipal administration, mines, metallurgy and the like, and is one of the popular pump types in the market at present. The common 'single-casing segment type self-balancing horizontal multi-stage centrifugal pump' is characterized in that two impeller pressurizing cavities on two sides of a pump shaft are connected in a pipeline type circulation mode through a conduction pipe (or a flow guide pipe component) of a flow passage pipeline in the middle of the pump, and the balance of axial forces on two sides of the pump shaft is achieved. However, the externally installed pipelines are abrupt, the appearance is poor, the balance of radial force after liquid flows pass through the pipelines on one side is poor, and the phenomenon of surging of the whole pump is easy to occur.
In the prior art, a two-stage self-balancing multistage centrifugal pump is disclosed, and the publication number is as follows: CN107939688A, the cavity of its two sets of symmetrical impeller needs the back flow to communicate, the back flow is for outstanding solitary pipe structure outside the pump, this kind of unilateral convex back flow structure switches on and causes the noise increase of whistling of pump easily, takes place the phenomenon of the surging of pump moreover easily and takes place, great vibration easily appears in the whole working process of pump, lead to the axial balancing force of pump shaft to weaken and form the asymmetric phenomenon of axial force and take place, the balanced effect of pump shaft is extremely poor.
The invention aims to solve the technical problems that a traditional self-balancing pump is easy to surge and shake high-temperature medium conveyed and has poor balancing effect of a pump rotor.
Disclosure of Invention
The invention provides a double-suction self-balancing multistage pump, aiming at ensuring that a pump rotor has better axial and radial balance when the pump delivers high-temperature media, ensuring that the whole pump is not easy to surge and shake in the working process and improving the running stability of the pump.
The technical scheme adopted by the invention for solving the technical problems is as follows: a double suction self-balancing multistage pump, comprising:
the pump comprises a pump body, wherein a core package is arranged in the pump body, and a main impeller pressurizing cavity and an auxiliary impeller pressurizing cavity are symmetrically arranged in the pump body;
the cylinder surrounding pressure stabilizing cavity is arranged in the pump body and is in a cylinder surrounding clamping cavity shape, the cylinder surrounding pressure stabilizing cavity is arranged outside the auxiliary impeller pressurizing cavity, and two ends of the cylinder surrounding pressure stabilizing cavity are respectively communicated with the main impeller pressurizing cavity and the auxiliary impeller pressurizing cavity;
the main suction port channel is arranged on the left side of the pump body in a welding connection mode and is communicated with the main impeller pressurizing cavity;
the composite outlet channel is arranged in the middle of the pump body in a welding connection mode, and outlets of the main impeller pressurizing cavity and the auxiliary impeller pressurizing cavity are communicated with the composite outlet channel;
the middle partition body is arranged in the pump body in a clamping and sealing connection mode and divides the main impeller pressurizing cavity, the auxiliary impeller pressurizing cavity and the ring barrel pressure stabilizing cavity;
the pre-buried steel structure seat is arranged below the pump body and is in bolted connection with the pump body, and the pre-buried steel structure seat is provided with a damping support tower and a stable pull seat respectively.
Preferably, the pump body is barrel-shaped, the pump body is a stator component of the pump, the core pack is a rotor component of the pump, the core pack is connected with the pump body in a clearance fit manner, and the main impeller pressurizing cavity and the auxiliary impeller pressurizing cavity are arranged in the pump body.
Preferably, the symmetry is provided with the support arm on the outside four corners of the pump body, the support arm with the shock attenuation support tower on the pre-buried steel structure seat carries out the bolt and connects, the lower extreme of the pump body is provided with the registration arm, the registration arm with the steady seat of drawing on the pre-buried steel structure seat carries out the bolt and connects.
Preferably, a slag discharge port channel is arranged at the lower part of the pump body, the slag discharge port channel is communicated with the main impeller supercharging cavity in a pipeline manner, and a manual valve is arranged on a pipeline of the slag discharge port channel.
Preferably, the left side of the main impeller supercharging cavity is sequentially provided with a driving side pump cover, a driving side shaft seal and a driving side bearing body, and the right side of the auxiliary impeller supercharging cavity is sequentially provided with a follow-up side pump cover, a balance cavity, a follow-up side shaft seal and a follow-up side bearing body.
Preferably, the main impeller supercharging cavity and the auxiliary impeller supercharging cavity are internally provided with impellers in the same number of stages and guide vanes matched with the impellers, and the impellers in the main impeller supercharging cavity and the auxiliary impeller supercharging cavity are distributed in a back-to-back arrangement mode.
Preferably, a balance drum is arranged between the servo side pump cover and the auxiliary impeller supercharging cavity, a compensation liquid port channel is arranged on the outer side of the servo side pump cover, the balance cavity is arranged between the servo side pump cover and the servo side shaft seal, and the compensation liquid port channel is communicated with the balance cavity in a pipeline manner.
Preferably, the main suction channel and the composite outlet channel are vertical and are arranged on the upper part of the pump body in a welding connection mode, and the main suction channel and the composite outlet channel are distributed in a parallel mode.
Preferably, the upper side and the lower side of the middle partition body are respectively provided with a lower through hole and an upper through hole, the main impeller pressurizing cavity is communicated with the cylinder ring pressure stabilizing cavity through the lower through hole, and the auxiliary impeller pressurizing cavity is communicated with the composite outlet channel through the upper through hole.
Preferably, the lower circulation ports and the upper circulation ports are oppositely distributed on the upper and lower sides of the circular middle partition, the lower circulation ports and the upper circulation ports are distributed in parallel, and the inclination angles of the lower circulation ports and the upper circulation ports are the same and are both 45 degrees.
The beneficial effects of the invention are: according to the invention, the medium flowing direction in the main impeller pressurizing cavity is adopted to flow out in an up-down symmetrical manner through the composite outlet channel and the lower flow port, the auxiliary impeller pressurizing cavity and the main impeller pressurizing cavity form a bilaterally symmetrical flow direction, the main impeller pressurizing cavity and the auxiliary impeller pressurizing cavity are communicated through the annular pressure stabilizing cavity, the annular pressure stabilizing cavity is uniformly arranged outside the auxiliary impeller pressurizing cavity in an annular manner, the medium flowing out of the auxiliary impeller pressurizing cavity can be converged with the medium flowing out of the main impeller pressurizing cavity through the upper flow port and then discharged from the composite outlet channel, the pump rotor components such as a core cladding and the like are ensured to have better balance in the axial direction and balance in the radial direction in the working process, and the phenomenon of surging of the whole pump in the process of conveying high-temperature medium is effectively ensured; simultaneously, pre-buried steel structure seat is wholly connected with the pump body through the form of four shock attenuation support towers and steady pulling seat, and whole aesthetic property is good, and resonant release is good, the effectual bearing part who protects the pump guarantees that the whole safe operation that can be stable for a long time of pump in the course of the work.
Drawings
FIG. 1 is a schematic front view of an embodiment of the present invention;
FIG. 2 is a left side view schematic of an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of a balance drum of an embodiment of the present invention;
FIG. 4 is a partially enlarged schematic view of the media flow direction of FIG. 1 of an embodiment of the present invention;
in the figure: the pump body 1, 11 support arms, 12 positioning arms, 13 slag discharge port channels, 14 manual valves, 2 core packages, 21 impellers, 22 guide vanes, 3 main impeller pressurizing cavities, 31 driving side pump covers, 32 driving side shaft seals, 33 driving side bearing bodies, 4 auxiliary impeller pressurizing cavities, 41 balance drums, 42 follow-up side pump covers, 43 compensation liquid port channels, 44 balance cavities, 45 follow-up side shaft seals, 451 cooling water injection cavities, 46 follow-up side bearing bodies, 5 ring barrel pressure stabilizing cavities, 6 main suction port channels, 7 composite outlet channels, 8 middle partitions, 81 lower flow ports, 82 upper flow ports, 9 embedded steel seats, 91 damping support towers and 92 stable pull seats.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, it should be understood that the preferred embodiments described herein are only for illustrating and explaining the present invention, and are not intended to limit the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention. In embodiments, the components of the embodiments of the present application, generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1 to 4, in one aspect, the present invention provides a double suction self-balancing multistage pump, including: the pump body 1, core package 2, main impeller booster cavity 3, auxiliary impeller booster cavity 4, ring section of thick bamboo pressure stabilizing cavity 5, main suction inlet way 6, compound export way 7, mesophase body 8 and pre-buried steel structure seat 9.
Hereinafter, a partial structure and principle of the above-described components according to the present self-balancing structure will be described in detail.
Example 1
As an example, as shown in fig. 1 and fig. 2, a pump body 1 is in a cylindrical shape, the pump body 1 is a stator component of a pump, the pump body 1 can be made by forging and turning by machining, an embedded steel base 9 is arranged below the pump body 1, the embedded steel base 9 can be a square steel structure frame made by welding channel steel, shock-absorbing towers 91 are respectively arranged on the embedded steel base 9, the shock-absorbing towers 91 can be in a trapezoidal shape, rib plates can be welded at corners of the shock-absorbing towers 91 for enhancing the structural strength of the shock-absorbing towers, the shock-absorbing towers 91 can be distributed in a symmetrical quadrilateral shape, the shock-absorbing towers 91 can be welded with the embedded steel base 9, a tension-stabilizing base 92 can be arranged between two shock-absorbing towers 91 on the left side of the embedded steel base 9, the tension-stabilizing base 92 is welded with the embedded steel base 9, the height of the tension-stabilizing base 92 can be 30mm to 100mm, and penetration of a screw rod during bolting can be facilitated; the heights of the four shock-absorbing towers 91 can be the same, and the height difference between the shock-absorbing towers 91 and the steady pull seat 92 can be equal to half of the outer diameter of the pump body 1. The symmetry is provided with support arm 11 on the outside four corners of the pump body 1, support arm 11 can with pump body 1 adopts forging an organic whole to make or make through welded connection's mode welding process, four that the outside four corners of the pump body 1 distributes support arm 11 with pre-buried steel constructs shock attenuation support tower 91 on the seat 9 and carries out the bolt joint and be connected, the lower extreme of the pump body 1 can be welded and be had the locating arm 12, the locating arm 12 can set up drive one side of the rotor of the pump body 1, the lower extreme of the pump body 1 can pass through the locating arm 12 with the pre-buried steel constructs the steady seat 92 on the seat 9 and carries out the bolt joint and be connected.
In an embodiment, a steel pad or a hard rubber thin pad may be padded between the support arm 11 and the shock absorbing tower 91 or between the positioning arm 12 and the steady pulling seat 92, so as to facilitate installation leveling and also have an effect of reducing the resonant frequency. The drive one side of the pump body 1 is passed through the set arm 12 is connected with the steady seat 92 of drawing and is consolidated, the steady seat 92 with can form triangular's fastening form between the shock attenuation support tower 91, the stable effect of installation is fabulous, and when the pump is whole driven moreover, the vibrational force that produces when the start-up can be eliminated to driven rotor one side, and the stability of clamping is fabulous, and the release nature of vibrational force is fabulous.
Example 2
As shown in fig. 1, 2, and 4, for example, a core package 2 is disposed in the pump body 1, the core package 2 is a rotor component of the pump, and the core package 2 and the pump body 1 may be rotationally connected in a clearance fit manner. A main impeller pressurizing cavity 3 and an auxiliary impeller pressurizing cavity 4 are arranged on two sides in the pump body 1; the main impeller supercharging cavity 3 and the auxiliary impeller supercharging cavity 4 are symmetrically distributed, a middle spacer 8 is arranged between the main impeller supercharging cavity 3 and the auxiliary impeller supercharging cavity 4, the middle spacer 8 is arranged in the pump body 1 in a connecting mode that a mouth table is clamped with a hard sealing clamping rubber ring, and the main impeller supercharging cavity 3 and the auxiliary impeller supercharging cavity 4 are separated by the middle spacer 8. Impellers 21 with the same number of stages and guide vanes 22 matched with the impellers 21 are arranged in the main impeller pressurizing cavity 3 and the auxiliary impeller pressurizing cavity 4; the impeller 21 is mounted on the core pack 2.
In an embodiment, four sets of impellers 21 and matched guide vanes 22 are respectively distributed in the main impeller booster cavity 3 and the auxiliary impeller booster cavity 4, and the respective impellers 21 in the main impeller booster cavity 3 and the auxiliary impeller booster cavity 4 are distributed in a back-to-back arrangement. Namely, the pump shaft of the core package 2 is arranged in an axial symmetry manner by adopting one group of impellers 21 and the other group of impellers 21, and when the core package 2 is inserted into and mounted in the pump body 1, the pump shafts arranged in the main impeller pressurizing cavity 3 and the auxiliary impeller pressurizing cavity 4 are respectively provided with the impellers 21 which are symmetrically distributed in the same number; when the impeller 21 and the pump shaft are installed, the impeller can be accurately positioned on the pump shaft through a clamping ring and a thermal expansion amount space is reserved, and the stages can be connected together through hexagon socket head cap screws. This kind main impeller booster cavity 3 with the mode of arranging impeller 21 combination assembly back-to-back in the auxiliary impeller booster cavity 4 makes the water pump realize its rotor self-balancing, moreover core package 2 can wholly the sliding fit insert to in the pump body 1, core package 2 can wholly the dismouting, and the assembly is consuming time weak, and the maintenance of being convenient for save maintenance time cost and manufacturing cost for the user scene provides convenient condition.
Example 3
Referring to fig. 1 to 4, a drive-side pump cover 31, a drive-side shaft seal 32, and a drive-side bearing body 33 are provided in this order on the left side of the main-impeller booster chamber 3. A servo-side pump cover 42, a balance cavity 44, a servo-side shaft seal 45 and a servo-side bearing body 46 are sequentially arranged on the right side of the auxiliary impeller booster cavity 4; a balance drum 41 is arranged between the servo-side pump cover 42 and the auxiliary impeller supercharging cavity 4, the sealing surface of the balance drum 41 adopts a labyrinth structure, a compensation liquid port channel 43 is arranged on the outer side of the servo-side pump cover 42, the balance cavity 44 is arranged between the servo-side pump cover 42 and the servo-side shaft seal 45, and the compensation liquid port channel 43 is communicated with the balance cavity 44 in a pipeline manner; the balance cavity 44 is separated from the auxiliary impeller pressurizing cavity 4 through the balance drum 41, when the core package 2 drives the impeller 21 to rotate, the compensation liquid port 43 can suck a medium into the balance cavity 44, the medium in the balance cavity 44 can flow into the auxiliary impeller pressurizing cavity 4 through a gap between the balance drums 41 in a small amount, balance between the pressures in the auxiliary impeller pressurizing cavity 4 and the balance cavity 44 is ensured, and the balance cavity 44 is low-pressure, so that the follow-up side shaft seal 45 is effectively ensured not to contact a high-pressure medium and bear high pressure, the service life of the follow-up side shaft seal 45 is prolonged, and leakage is not easy to occur.
Example 4
As an example, as shown in fig. 1, 2, and 4, a main suction port 6 is disposed at an upper left end of the pump body 1, the main suction port 6 is welded to the pump body 1, and the main suction port 6 is in pipe-line communication with a suction section of the main impeller pressurizing chamber 3. The composite outlet channel 7 is arranged at the upper end of the middle part of the pump body 1, the main suction port channel 6 and the composite outlet channel 7 are distributed in a parallel shape, and the main suction port channel 6 and the composite outlet channel 7 are vertical and are arranged at the upper part of the pump body 1 in a welding connection manner; the composite outlet channel 7 is disposed above the respective outlet sections of the primary and secondary impeller plenums 3 and 4.
The cylinder-surrounding pressure stabilizing cavity 5 can be arranged in the pump body 1, and the cylinder-surrounding pressure stabilizing cavity 5 can be in a cylinder-surrounding clamping cavity shape; the ring barrel pressure stabilizing cavity 5 is completely arranged outside the auxiliary impeller pressurizing cavity 4 and surrounds the auxiliary impeller pressurizing cavity 4 in an encircling manner; the partition body 8 can divide the main impeller booster cavity 3, the auxiliary impeller booster cavity 4 and the ring barrel pressure stabilizing cavity 5; the upper and lower sides of the middle partition 8 are respectively provided with a lower through opening 81 and an upper through opening 82, the lower through opening 81 and the upper through opening 82 are oppositely distributed on the upper and lower sides of the circular middle partition 8, the lower through opening 81 and the upper through opening 82 are distributed in a parallel shape, and the lower through opening 81 and the upper through opening 82 have the same inclination angle and are both 45 degrees. The upper end of the outlet section of the main impeller pressurizing cavity 3 is communicated with the composite outlet channel 7, the lower end of the outlet section of the main impeller pressurizing cavity 3 is communicated with the left end of the ring barrel pressure stabilizing cavity 5 through the lower flow port 81, the right end of the ring barrel pressure stabilizing cavity 5 is communicated with the suction section of the auxiliary impeller pressurizing cavity 4, and the outlet section of the auxiliary impeller pressurizing cavity 4 is communicated with the composite outlet channel 7 through the upper flow port 82. That is, the upper end of the outlet section of the main impeller booster cavity 3 is communicated with the upper discharge port 82 of the outlet section of the auxiliary impeller booster cavity 4 uniformly through the composite outlet channel 7, and the discharge port 82 is collected between the outlet section of the main impeller booster cavity 3 and the composite outlet channel 7 in a herringbone collection shape.
In the embodiment, referring to fig. 4, fig. 4 is a schematic diagram of a flow direction of a high-temperature liquid medium during the operation of the pump, solid arrows in the diagram are a flow path and a flow direction of the liquid medium, after the high-temperature liquid medium enters the pump body 1, the high-temperature liquid medium is pressurized by the impeller 21 and the guide vane 22 in the main impeller pressurizing cavity 3 rotating forward, the last impeller 21 in the main impeller pressurizing cavity 3 can discharge a part of the high-temperature medium above the high-temperature liquid medium into the composite outlet channel 7 above the high-temperature liquid medium, the last impeller 21 in the main impeller pressurizing cavity 3 can also discharge another part of the high-temperature liquid medium below the high-temperature liquid medium into the holes of the downstream port 81 and flow out into the cylinder-annular pressure stabilizing cavity 5, the pressurized medium at the outlet section of the main impeller pressurizing cavity 3 is discharged from the upper side and the lower side, the vertical symmetry is good, and the radial balance of the core package 2 of the rotor during the rotation is ensured; meanwhile, the cylinder-surrounding pressure-stabilizing cavity 5 is in an annular clamping cavity shape, the liquid medium in the cylinder-surrounding pressure-stabilizing cavity 5 flows into the suction section in the auxiliary impeller pressurizing cavity 4, and after the medium is pressurized by the impeller 21 and the guide vane 22 in the auxiliary impeller pressurizing cavity 4, the medium flows out to the composite outlet channel 7 through the hole of the upper row of through holes 82 on the middle partition body 8 and is directly output, so that the whole process of conveying the high-temperature liquid medium by the pump is completed.
Compared with the prior art, the medium discharged from the auxiliary impeller pressurizing cavity 4 and the medium discharged from the main impeller pressurizing cavity 3 are discharged after being converged at the composite outlet channel 7, the medium serving as the rotor is balanced and good in the axial direction of the core package 2, the medium in the auxiliary impeller pressurizing cavity 4 flows in the annular and uniform manner through the external annular cylinder pressure stabilizing cavity 5, the core package 2 can be balanced again in the radial direction, and the radial balancing effect of the core package 2 during rotation work is excellent. Compared with the traditional single-shell pump which needs to be additionally provided with an externally-connected middle overflowing pipeline, the structural layout mode of the annular cylinder-surrounding pressure stabilizing cavity 5, the auxiliary impeller pressurizing cavity 4 and the main impeller pressurizing cavity 3 which are integrated in the pump body 1 of the single-shell pump not only replaces the external pipeline of the single-shell pump, but also completely integrates the core package 2 of the pump, the overflowing main impeller pressurizing cavity 3, the auxiliary impeller pressurizing cavity 4, the balance cavity 44, the cylinder-surrounding pressure stabilizing cavity 5, the lower flowing port 81, the upper flowing port 82 and other cavities in the high-pressure pump body 1, so that the uniformity is good, the layout of all cavity structures is reasonable, the main suction port 6 and the composite outlet 7 are vertically distributed on the center of the upper end of the pump body 1 in the same direction, the axial balance and the radial balance of the core package 2 in actual working operation are guaranteed, the theoretical balance state is realized, and the safety and reliability of the operation are improved. The medium flowing direction in the main impeller pressurizing cavity 3 is combined to flow out symmetrically up and down through the composite outlet channel 7 and the lower flow port 81, the auxiliary impeller pressurizing cavity 4 and the main impeller pressurizing cavity 3 form bilaterally symmetrical flow directions, the main impeller pressurizing cavity 3 is communicated with the auxiliary impeller pressurizing cavity 4 through the annular pressure stabilizing cavity 5, the annular pressure stabilizing cavity 5 is uniformly arranged outside the auxiliary impeller pressurizing cavity 4 in an annular mode, the medium flowing out of the auxiliary impeller pressurizing cavity 4 can be converged with the medium flowing out of the main impeller pressurizing cavity 3 through the upper flow port 82 and then discharged from the composite outlet channel 7, the pumps such as the core cladding 2 and the like are guaranteed to have good axial direction balance and radial direction balance in the working process, and the phenomenon of surging of the whole pump rotor component in the process of conveying high-temperature medium is effectively guaranteed; simultaneously, pre-buried steel structure seat 9 is connected with pump body 1 is whole through four shock attenuation support tower 91 and the form of surely drawing seat 92, and whole aesthetic property is good, and resonant release is good, the effectual bearing part who protects the pump adopts shock attenuation support tower 91 with surely drawing seat 92 to the whole horizontal center support that carries out of pump, to the high temperature pump, the thermal expansion volume on the mounting height can obtain releasing, and the installation and debugging of being convenient for guarantees that the whole safe operation that can stabilize for a long time of pump in the course of the work. The device is suitable for the application in the fields of clean energy power generation, energy-saving and environment-friendly power generation, urban heat supply and the like, and can also be used for conveying normal-temperature clean water or conveying high-temperature clean water for a long time under the working condition.
Example 5
Referring to fig. 1, a discharge opening channel 13 is provided at a lower portion of the pump body 1, the discharge opening channel 13 is in pipeline communication with the main impeller pumping chamber 3, and a manual valve 14 is connected to a pipeline of the discharge opening channel 13, so that precipitated magazines can be cleaned by the manual valve 14. The pipe of the compensating fluid port 43 can be placed directly in the high temperature medium holding tank, and the compensating fluid port 43 can also be designed to be connected to the pipe side of the main suction port 6 of the pump for confluent pipe connection, or to the suction section of the main impeller booster chamber 3.
Example 6
In the above embodiment, the low-pressure area in the pump body 1 may be sealed by an O-ring, and the high-pressure side seal in the pump body 1 and between the pump body and the pump cover may be sealed by a metal winding pad, or may be adjusted by combining the metal winding pad and a spacer; the pump body 1 can be sealed by a metal surface seal and a rubber ring, and the whole pump body 1 is combined together by a tension bolt. In addition, the drive side shaft seal 32 and the driven side shaft seal 45 of the pump can adopt integrated mechanical seal, so that the overhaul and the maintenance are convenient; and a cooling water injection cavity 451 is arranged on the inner side of the casing of the drive side shaft seal 32 and the driven side shaft seal 45 of the pump according to the actual condition of the medium conveyed by the pump, pipelines for inlet and outlet of cold water can be reserved on two sides of the cooling water injection cavity 451 respectively, and the drive side shaft seal 32 or the driven side shaft seal 45 can be cooled by water cooling, so that when a high-temperature medium with high conveying temperature is conveyed, components such as a bearing, a balance drum or a balance disc can operate stably for a long time.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be dominated by the protection scope of the claims.
Claims (10)
1. A double suction self-balancing multistage pump, comprising:
the pump comprises a pump body, wherein a core package is arranged in the pump body, and a main impeller pressurizing cavity and an auxiliary impeller pressurizing cavity are symmetrically arranged in the pump body;
the cylinder surrounding pressure stabilizing cavity is arranged in the pump body and is in a cylinder surrounding clamping cavity shape, the cylinder surrounding pressure stabilizing cavity is arranged outside the auxiliary impeller pressurizing cavity, and two ends of the cylinder surrounding pressure stabilizing cavity are respectively communicated with the main impeller pressurizing cavity and the auxiliary impeller pressurizing cavity;
the main suction port channel is arranged on the left side of the pump body in a welding connection mode and is communicated with the pressurizing cavity of the main impeller;
the composite outlet channel is arranged in the middle of the pump body in a welding connection mode, and outlets of the main impeller pressurizing cavity and the auxiliary impeller pressurizing cavity are communicated with the composite outlet channel;
the middle spacer is arranged in the pump body in a clamping and sealing connection mode and separates the main impeller pressurizing cavity, the auxiliary impeller pressurizing cavity and the ring barrel pressure stabilizing cavity;
the pre-buried steel structure seat is arranged below the pump body and is in bolted connection with the pump body, and the pre-buried steel structure seat is provided with a damping support tower and a stable pull seat respectively.
2. The double suction self balancing multistage pump of claim 1, wherein: the pump body is the barrel shape, the pump body is the stator part of pump, the core package is the rotor part of pump, the core package with the pump body is connected for clearance fit's mode, main impeller booster cavity with vice impeller booster cavity all arranges in the inside of pump body.
3. The double suction self balancing multistage pump of claim 2, wherein: the symmetry be provided with the support arm on the outside four corners of the pump body, the support arm with the shock attenuation support tower on the pre-buried steel structure seat carries out the bolt and connects, the lower extreme of the pump body is provided with the registration arm, the registration arm with the steady seat that draws on the pre-buried steel structure seat carries out the bolt and connects.
4. The double suction self balancing multistage pump of claim 3, wherein: and a slag discharge port channel is arranged at the lower part of the pump body, the slag discharge port channel is communicated with the main impeller supercharging cavity in a pipeline way, and a manual valve is arranged on the pipeline of the slag discharge port channel.
5. The double suction self balancing multistage pump of claim 2, wherein: the left side of the main impeller booster cavity is sequentially provided with a driving side pump cover, a driving side shaft seal and a driving side bearing body, and the right side of the auxiliary impeller booster cavity is sequentially provided with a follow-up side pump cover, a balance cavity, a follow-up side shaft seal and a follow-up side bearing body.
6. The double suction self balancing multistage pump of claim 5, wherein: the main impeller supercharging cavity and the auxiliary impeller supercharging cavity are internally provided with impellers in the same stage number and matched guide vanes, and the impellers in the main impeller supercharging cavity and the auxiliary impeller supercharging cavity are distributed in a back-to-back arrangement mode.
7. The double suction self balancing multistage pump of claim 5, wherein: a balance drum is arranged between the servo side pump cover and the auxiliary impeller supercharging cavity, a compensation liquid port channel is arranged on the outer side of the servo side pump cover, the balance cavity is arranged between the servo side pump cover and the servo side shaft seal, and the compensation liquid port channel is communicated with the balance cavity in a pipeline mode.
8. The double suction self balancing multistage pump of claim 1, wherein: the main suction channel and the composite outlet channel are vertical and are arranged on the upper part of the pump body in a welding connection mode, and the main suction channel and the composite outlet channel are distributed in a parallel mode.
9. The double-suction self-balancing multistage pump as claimed in claim 1, wherein: the upper side and the lower side of the middle partition body are respectively provided with a lower vent hole and an upper vent hole, the main impeller pressurizing cavity is communicated with the ring barrel pressure stabilizing cavity through the lower vent hole, and the auxiliary impeller pressurizing cavity is communicated with the composite outlet channel through the upper vent hole.
10. The double suction self balancing multistage pump of claim 9, wherein: the lower circulation ports and the upper circulation ports are oppositely distributed on the upper side and the lower side of the circular middle partition body, the lower circulation ports and the upper circulation ports are distributed in a parallel mode, and the inclination angles of the lower circulation ports and the upper circulation ports are the same and are both 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211667441.8A CN115898885A (en) | 2022-12-24 | 2022-12-24 | Double-suction self-balancing multistage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211667441.8A CN115898885A (en) | 2022-12-24 | 2022-12-24 | Double-suction self-balancing multistage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115898885A true CN115898885A (en) | 2023-04-04 |
Family
ID=86484625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211667441.8A Pending CN115898885A (en) | 2022-12-24 | 2022-12-24 | Double-suction self-balancing multistage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115898885A (en) |
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2022
- 2022-12-24 CN CN202211667441.8A patent/CN115898885A/en active Pending
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