CN210636437U - Embedded pouring system for internal corner of volute - Google Patents
Embedded pouring system for internal corner of volute Download PDFInfo
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- CN210636437U CN210636437U CN201921241229.9U CN201921241229U CN210636437U CN 210636437 U CN210636437 U CN 210636437U CN 201921241229 U CN201921241229 U CN 201921241229U CN 210636437 U CN210636437 U CN 210636437U
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Abstract
The utility model discloses a pre-buried pouring system for spiral case reentrant corner, mainly constitute by concrete pump line and mortar pump line two parts, wherein, the mortar pump line compares in the concrete pump line and is close to in the spiral case side of waiting to pour, when using this pre-buried pouring system to carry out pouring of spiral case, because radial pump line and mortar pump line among the pre-buried pouring system all distribute according to the quadrant, therefore, also pour according to the form of four quadrants during pouring, when pouring of every quadrant, at first adopt radial pump line to carry out concrete placement, after waiting concrete placement, carry out the benefit by the mortar pump line and pour again, hole department when filling early concrete placement, especially can compensate the hole area that spiral case storehouse face and spiral case reentrant corner are difficult to pour, in order to realize the closely knit pouring of spiral case; the embedded pouring system has the advantages of simple structure, reasonable design and the like, can effectively reduce capital investment and construction difficulty on the premise of ensuring quality, and ensures the concrete density effect.
Description
Technical Field
The utility model discloses a technical field who relates to water and electricity engineering concrete construction especially relates to a pre-buried pouring system for spiral case reentrant corner.
Background
In hydroelectric engineering, an underground plant is a place where equipment such as a volute, a water turbine and a generator are arranged, and the underground plant of the hydroelectric engineering is usually complex in structure. When the concrete pouring operation is carried out on the volute layer of the underground powerhouse in the hydroelectric engineering, the pouring is difficult because the steel bars on the outer side of the volute are dense.
In order to ensure the pouring quality of concrete, at present, when the concrete is poured on the volute layer of the underground powerhouse in the hydroelectric engineering, a four-quadrant pouring method is generally adopted for pouring, meanwhile, concrete in each quadrant is divided into a first pouring block and a second pouring block (a reentrant corner part), and 4 low-three-high radial pump pipes are embedded in the first pouring block, and 16 low-three-high radial pump pipes are embedded in the first pouring block. When concrete is poured, the low-position pump pipe is firstly utilized to pour the concrete according to the sequence of I → II → III → IV, and finally the high-position pump pipe is utilized to pour the concrete at the position of the volute casing seat ring (internal corner), the preformed hole arranged on the volute casing seat ring is fully utilized to be vibrated (or grouted) in the pouring process, and the concrete is put into a bin by adopting first-level, high-flow and self-compacting concrete.
Although the method can complete the pouring of the concrete of the volute layer, the pump pipes are embedded more, the construction of workers in a narrow space is difficult, the time consumption is long, the working efficiency is low, the workers need to frequently switch the low-position pump pipes and the high-position pump pipes, the labor intensity is high, fatigue is generated, and the pipe orifices of some pump pipes are blocked by the concrete before the material is beaten, so that the problems that the embedded pump pipes are not utilized, the construction quality is influenced and the like are caused.
Therefore, how to develop a concrete pouring system for the internal corner of the volute becomes a problem to be solved by people.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses a pre-buried pouring system for spiral case reentrant corner to solve at least that work efficiency that current pouring system for spiral case exists is low, construction quality subalternation problem.
The utility model provides a technical scheme specifically is a pre-buried pouring system for spiral case reentrant corner, and this pre-buried pouring system includes: a concrete pump pipe and a plurality of mortar pump pipes;
concrete pump pipe and treat that to cast adjacent basic dowel steel fixed connection in the spiral case mounting platform, concrete pump pipe includes: an annular pump pipe and twelve radial pump pipes;
the annular pump pipe is sleeved outside the volute to be cast;
the device comprises a circumferential pump pipe, a volute to be poured, a radial pump pipe and a radial pump pipe, wherein the circumferential pump pipe and the radial pump pipe are arranged between the circumferential pump pipe and the volute to be poured at intervals along the circumferential direction of the circumferential pump pipe, a coordinate system is established by taking the center of the volute to be poured as an original point, the volute to be poured is divided into four quadrant areas, three radial pump pipes are distributed in each quadrant area, the three radial pump pipes are arranged along the radial direction of the volute to be poured, the feeding end of each radial pump pipe is connected and communicated with the circumferential pump pipe, and;
the mortar pump pipes are located between the to-be-poured volute and the radial pump pipes and are arranged at intervals along the circumferential direction of the to-be-poured volute respectively, the discharge hole of each mortar pump pipe is close to the bottom of a foundation ring in the to-be-poured volute, and each mortar pump pipe is higher than any radial pump pipe along the axial height of the to-be-poured volute.
Preferably, the number of the mortar pump pipes is 8, and 2 mortar pump pipes are uniformly distributed in each quadrant area.
Preferably, the horizontal distance between the discharge hole of each radial pump pipe in the concrete pump pipe and the volute to be poured is greater than or equal to 50 cm.
Further preferably, the horizontal distance between the discharge hole of each mortar pump pipe and the volute to be poured is more than or equal to 20 cm.
The utility model provides a pre-buried pouring system for spiral case reentrant corner mainly comprises concrete pump line and mortar pump line two parts, wherein, the mortar pump line is compared in the concrete pump line and is close to in waiting to water the spiral case side, when using this pre-buried pouring system to carry out pouring of spiral case, because radial pump line and mortar pump line among the pre-buried pouring system all distribute according to the quadrant, consequently, also pour according to the form of four-quadrant during pouring, it pours the order and is at first choosing a diagonal angle quadrant as watering the piece earlier, then water the piece after regarding as with another diagonal angle quadrant, and the concrete process of pouring of every quadrant does: the method comprises the following steps of firstly adopting a radial pump pipe to carry out concrete pouring, and then carrying out filling pouring by a mortar pump pipe after the concrete pouring is finished so as to fill up the pore space during early-stage concrete pouring, and particularly can make up the pore space area which is difficult to pour on the cabin surface of the volute and the internal corner of the volute so as to realize compact pouring of the volute.
The utility model provides a pre-buried pouring system for spiral case reentrant corner has simple structure, advantages such as reasonable in design both can effectively reduce the fund input under the prerequisite of guaranteeing the quality, reduce the construction degree of difficulty again, guarantee the dense effect of concrete.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is the utility model discloses an embodiment provides a pre-buried pouring system's for spiral case reentrant corner structural schematic diagram.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The volute casing pouring construction is a construction part with a large difficulty coefficient in hydropower engineering, and how to improve the compactness of the volute casing in pouring is a technical problem which troubles people in the field. In view of the above problems, the present embodiment provides a novel pre-cast pouring system for a female corner of a volute, and referring to fig. 1, the pre-cast pouring system mainly comprises a concrete pump pipe 1 and a plurality of mortar pump pipes 2, wherein the concrete pump pipe 1 is fixedly connected to adjacent foundation dowels in a mounting platform of the volute to be poured, the concrete pump pipe 1 comprises a circumferential pump pipe 11 and twelve radial pump pipes 12, wherein the circumferential pump pipe 11 is sleeved outside the volute to be poured a, the twelve radial pump pipes 12 are located between the circumferential pump pipe 11 and the volute to be poured a and are arranged at intervals along the circumferential direction of the circumferential pump pipe 11, a coordinate system is established with the center of the volute to be poured a as an origin, the volute to be poured a is divided into four quadrant areas, three radial pump pipes 12 are distributed in each quadrant area, and the three radial pump pipes 12 are arranged along the radial direction of the volute to be poured a, and the feeding end of each radial pump pipe 12 is connected and communicated with the annular pump pipe 11, wherein the axial height of the radial pump pipes 12 positioned at two sides in each quadrant area along the volute A to be poured is higher than the axial height of the radial pump pipe 12 positioned in the middle along the volute A to be poured, namely, each quadrant is respectively provided with 2 high-position radial pump pipes and 1 low-position radial pump pipe, the mortar pump pipes 2 are all positioned between the volute A to be poured and the radial pump pipe 12, namely, the mortar pump pipes 2 are closer to the volute to be poured A than the radial pump pipes 12, the plurality of mortar pump pipes 2 are respectively arranged along the circumferential direction of the volute to be poured A at intervals, the discharge hole of each mortar pump pipe 2 is close to the bottom of the foundation ring in the volute to be poured A, and the axial height of each mortar pump pipe 2 along the volute A to be poured is higher than the axial height of any radial pump pipe 12 along the volute A to be poured.
The pre-buried pouring system in the embodiment mainly comprises a concrete pump pipe and a mortar pump pipe, wherein the mortar pump pipe is closer to the volute side to be poured compared with the concrete pump pipe, when the volute is poured by using the pre-buried pouring system, as the radial pump pipe and the mortar pump pipe in the pre-buried pouring system are distributed according to quadrants, the pouring is also performed according to a four-quadrant form, the pouring sequence is that firstly, one diagonal quadrant is selected as a first pouring block, then the other diagonal quadrant is taken as a second pouring block, and the concrete pouring process of each quadrant is as follows: the method comprises the following steps of firstly adopting a radial pump pipe to carry out concrete pouring, and then carrying out filling pouring by a mortar pump pipe after the concrete pouring is finished so as to fill up the pore space during early-stage concrete pouring, and particularly can make up the pore space area which is difficult to pour on the cabin surface of the volute and the internal corner of the volute so as to realize compact pouring of the volute.
In order to reduce the number of the mortar pump pipes 2 required in the embedded pouring system on the basis of ensuring the construction speed and the construction quality of the volute pouring, preferably, referring to fig. 1, 8 mortar pump pipes 2 are arranged in the embedded pouring system, and 2 mortar pump pipes 2 are distributed in each quadrant region and used for filling and pouring mortar.
In order to ensure the pouring quality, the horizontal distance between the discharge hole of each radial pump pipe 12 in the concrete pump pipe 1 and the volute A to be poured in the embedded pouring system is more than or equal to 50cm, and the horizontal distance between the discharge hole of each mortar pump pipe 2 and the volute A to be poured in the embedded pouring system is more than or equal to 20 cm.
The concrete process of adopting the embedded pouring system to pour the volute casing is as follows:
1) pre-embedding a pump pipe:
pre-embedding construction of a concrete pump pipe and a mortar pump pipe is carried out according to the pre-embedding pouring system, the concrete pump pipe and the mortar pump pipe are respectively and fixedly connected with adjacent basic joint bars in a volute installation platform to be poured, four quadrant areas divided by a coordinate system are established by taking the center of the volute to be poured as an original point, and the four quadrant areas are respectively marked as a quadrant I, a quadrant II, a quadrant III and a quadrant IV in a clockwise direction;
2) pouring blocks firstly and warehousing:
taking a quadrant I and a quadrant III as early-pouring blocks, firstly, backfilling and pouring the quadrant I and the quadrant III, opening a radial pump pipe in the corresponding quadrant to perform inner side blanking and pouring while adopting a distributing machine to perform outer side blanking and pouring when backfilling and pouring the quadrant I and the quadrant III, simultaneously performing concrete pouring from the inner side and the outer side, and opening a mortar pump pipe in the corresponding quadrant to perform mortar filling and pouring after the concrete pouring is finished;
3) and (3) warehousing of post-cast blocks:
and after the I quadrant and the III quadrant are poured, performing backfill pouring on the II quadrant and the IV quadrant, when performing backfill pouring on the II quadrant and the IV quadrant, starting the radial pump pipes in the corresponding quadrants to perform inner side blanking pouring, simultaneously performing outer side blanking pouring by using a distributor, simultaneously performing concrete pouring from the inner side and the outer side, and after the concrete pouring is finished, starting the mortar pump pipes in the corresponding quadrants to perform mortar filling pouring.
The step 2) of pouring the blocks into the warehouse firstly and the step 3) of pouring the blocks into the warehouse later, and opening the radial pump pipes in corresponding quadrants to pour the inner side of the blocks in the warehouse, and simultaneously pouring the blocks by adopting a distributor to pour the blocks in the outer side of the blocks, wherein the concrete process of pouring concrete from the inner side and the outer side simultaneously comprises the following steps:
opening a radial pump pipe positioned in the middle of a corresponding quadrant for carrying out inner side blanking pouring, and simultaneously carrying out outer side blanking pouring by using a distributing machine, when the pouring is close to the bottom of the volute, controlling the blanking speed of the radial pump pipe and the blanking speed of the distributing machine, and requiring that the inner side blanking pouring height of the radial pump pipe is higher than the outer side blanking pouring height of the distributing machine to form a height difference, and withdrawing a constructor from a side end enclosure with a small radius of the volute until the inner side pouring cannot be vibrated;
starting radial pump pipes positioned on two sides in the corresponding quadrant one by one from the big radius and the small radius of the volute, and pumping the self-compacting concrete to the internal corner of the volute through the radial pump pipes to finish the pouring of the self-compacting concrete;
in the pouring process, the grouting holes reserved in the volute foundation ring are used for vibrating, meanwhile, the reserved grouting holes are used for supplementary discharging, when concrete is poured to the top surface of the volute foundation ring and the holes in the volute foundation ring begin to emit grout, the holes are plugged by adopting wood plugs, and concrete pouring is completed.
Preferably, the height difference formed by the inner side blanking and pouring of the radial pump pipe and the outer side blanking and pouring of the distributing machine is less than or equal to 20 cm.
The concrete process of pouring the mortar by starting the mortar pump pipe in the corresponding quadrant in the step 2) of putting the first poured block into the warehouse and the step 3) of putting the later poured block into the warehouse for filling the mortar is as follows:
and when the mortar pump pipe in the corresponding quadrant is opened for mortar filling and pouring, observing the pouring condition from the exhaust hole on the volute seat ring, dredging the exhaust hole in real time, and finishing the mortar filling and pouring after the internal corner of the volute emits mortar.
The inner and outer sides described in the above embodiments do not refer to the inner and outer portions of the volute, but both sides closer to the volute are referred to as inner sides and the sides farther from the volute are referred to as outer sides with respect to the outer portion of the volute.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The present invention is further explained with reference to the following specific examples, which are not intended to limit the scope of the present invention.
Concrete pouring of the volute of the machine unit section of the underground power station main house on the right bank of the Wudongde hydropower station is taken as an example.
The volute installation platform is divided into structural concrete with a volute shell layer, a water turbine entrance corridor layer, a water turbine layer, a bus outgoing line layer, a generator layer and the like from a section with a height of 823.17m, the unit installation height is 803.00m, and the volute installation height is 797.90m808.10m, volute entrance corridor bottom plate elevation EL802.10m, turbine entrance corridor bottom plate elevation EL807.00m, turbine layer pouring top elevation EL811.32m, lower rack foundation installation elevation 813.09, stator foundation installation elevation 815.60, bus outlet layer bottom plate top elevation EL816.35m is flush with a bus hole bottom plate, and generator layer (including fan housing wall) floor top elevation EL823.17m is flush with an installation room bottom plate. The volute is made of SX780CF high-strength steel plate, an elastic cushion layer is wrapped on the outer side of the waist line, three layers of reinforcing mesh are designed around the sections VE 5-V8, two layers of reinforcing mesh are designed around the sections V9-V24, and the annular main ribs are
The downstream distribution rib is
The volute concrete layering height is 1.8-4.0 m, and the main construction projects comprise steel bar manufacturing and installation, embedded part installation, elastic cushion layer laying, volute concrete pouring, contact grouting and the like.
1. Key and difficult points of construction
The volute concrete is located on a key line, construction period is short, construction difficulty is high, construction is reasonably organized under the influence of factors such as structural forms and cross operation, management is strengthened, resource investment is increased, and construction progress is guaranteed to be important.
The internal corner position of the inner side of the volute is difficult to put in storage and vibrate, the seat ring and the internal corner position of the volute are complex in size, narrow in space, dense in reinforcing steel bars and difficult to put in storage and vibrate concrete, a concrete pump pipe is embedded at the bottom of the volute, the height of the cabin is locally raised, and the internal corner position concrete and the first layer of concrete are guaranteed to be poured and formed at one time, so that fullness and compaction are difficult points of construction and are also the key of volute concrete pouring construction.
2. Concrete construction process
(1) Pump pipe embedded at bottom of volute
The method comprises the steps of mainly pumping and backfilling the internal corner part of the bottom of a volute (including a base ring and the bottom of a base ring) by using an embedded pump pipe, using a phi 125mm grouting hole reserved on the base ring as an auxiliary material, establishing four quadrant areas divided by a coordinate system by taking the center of the volute to be poured as an original point, marking the four quadrant areas as a first quadrant, a second quadrant, a third quadrant and a fourth quadrant according to a clockwise direction, sleeving a circumferential pump pipe outside the volute, embedding 3 phi 150mm radial pump pipes and 2 phi 40 mortar pump pipes in each quadrant, connecting and communicating the feed end of each radial pump pipe with the circumferential pump pipe, arranging discharge ports of the radial pump pipes in each quadrant according to staggered high and low pipes, embedding two high pipes and one low pipe in each quadrant, wherein the two high pipes are positioned at two sides of the quadrant, the one low pipe is positioned in the middle of the quadrant, and the minimum distance between the discharge ports of the radial pump pipes and the bottoms of the base ring and the base ring is controlled according to not less than 50cm, the minimum distance between the discharge port of the mortar pump pipe and the bottom of the seat ring is controlled to be more than or equal to 20cm, and the radial pump pipe and the mortar pump pipe are fixed with the basic dowel bars of the volute installation platform (cannot be connected with the volute reinforcing steel bars and the metal-bonded embedded parts).
(2) Pouring blocks into a warehouse
In the embodiment, the quadrant I and the quadrant III are taken as a casting block, the quadrant I is cast firstly, the quadrant III is cast subsequently, or the quadrant I and the quadrant III can be cast simultaneously, the quadrant I is cast firstly, the quadrant III is cast subsequently, concrete is conveyed into a warehouse by a distributing machine to be mainly poured, concrete is pumped into the warehouse to be assisted, and a small bridge crane is hung by 6.0m3And (4) emergency of a horizontal tank, (after the distribution machine fails, if the distribution machine still cannot recover to operate within 3.0h, a small-bridge crane is adopted to hoist 6m3 tanks to serve as an emergency warehousing means). The material distributing machine and horizontal tank concrete warehousing slump is 120-140 mm, the pump concrete slump is 160-180 mm, the pump self-compacting concrete diffusivity is 600-700 mm, the concrete pump is mainly used for concrete pouring of a concrete pump pipe on the inner side of the volute, and the shuttle type material distributing machine is used for concrete pouring on the outer side of the volute. 1 concrete pump is respectively arranged in the I-th quadrant and the III-th quadrant before opening the warehouse, when the I-th quadrant is poured, the III-th quadrant is not poured for the moment, the concrete pump is used as the I-th quadrant for standby, when the III-th quadrant is poured, the I-th quadrant concrete pump is not removed and is reserved as the III-th quadrant for standby. Concrete at the internal corner of the bottom of the volute (comprising the seat ring and the foundation ring) cannot be poured into a compact area, high-grade (M35) cement mortar (with the consistency of 100-120 mm) is used for backfilling by using a mortar pump pipe, the mortar pump pipe is pre-embedded in advance, the minimum distance between a discharge port and the bottom of the seat ring is controlled according to the pressure of more than or equal to 20cm, and the grouting pressure is less than or equal to 0.2 Mpa.
Pouring the inner side (low pipe) and the outer side of the volute simultaneously, opening the bin from the side with larger radius of the volute for pouring, and adopting an extruding pouring method with high inside and low outside. The method is characterized in that vibrating personnel vibrate in the inner and outer side flat bins simultaneously, the inner side of the volute is discharged by a concrete pump, the outer side of the volute is discharged by a distributing machine, when the material is poured to be close to the bottom of the volute, the discharging is effectively controlled, the inner height and the outer height are ensured to be reached, a certain height difference is formed, the inner side concrete is extruded into the bottom and the outer side of the volute by utilizing the self fluidity of the concrete and vibrating dragging materials, the bottom of the volute is ensured to be compact, and when the inner side of the volute is poured to be incapable of vibrating, the constructor finally withdraw. And (3) pouring self-compacting concrete, pumping the self-compacting concrete to the internal corner part through a radial embedded high pump pipe, starting the radial high pump pipe one by one from the big radius to the small radius of the volute, and sequentially removing the annular main pump pipe arranged outside the volute in a joint mode. Using reservations on foundation rings during casting
Reserving grouting holes for vibration and simultaneously utilizing
And reserving a grouting hole for supplementary feeding, when concrete is poured to the top surface of the foundation ring and the hole on the foundation ring plate begins to seep, stopping the hole by adopting a wood plug, starting a grouting machine to backfill M30 cement mortar, observing the concrete pouring condition at the exhaust hole on the upper ring plate of the seat ring, arranging a specially-assigned person to dredge the exhaust hole by adopting an iron wire, and after the internal corner part seeps (collecting the bin at the inner side of the volute).
It is noted that ① pressure gauges are arranged on a concrete pump pipe and a grouting pipe in the pouring process, the pumping pressure and the grouting pressure are controlled according to the pressure not more than 0.2MPa to ensure that the lifting deformation value in the pumping process is controlled within the allowable range of a unit manufacturer, ② focuses on monitoring pouring inside the volute, the pouring outside the volute meets the pouring requirement at the same time, leveling is carried out orderly, reasonable blanking is carried out, joint covering is carried out in time, the vertical rising speed of the concrete inside and outside the volute of ③ is not more than 0.3m/h, and the plane height difference is not more than 20 cm.
(3) Warehousing of post-cast blocks
Post-cast block concreteIn the embodiment, the construction is carried out in a mode that the second quadrant is poured first and then the fourth quadrant is poured continuously, the concrete is conveyed into a bin by a distributing machine mainly, the concrete is conveyed into the bin by a concrete pump as an auxiliary, and a small bridge crane is hung by 6.0m3A horizontal tank is taken care of urgently, a concrete pump is mainly used for pouring concrete on the inner side of the volute, and a shuttle-type distributing machine is used for pouring concrete on the outer side of the volute. And opening a bin from the side with the larger radius of the volute casing for pouring concrete, and adopting an extrusion pouring method with high inside and low outside. Before the self-compacting concrete is poured to the bottom of the volute, constructors withdraw from the bottom of the volute on the side with the small radius of the volute and start to pour the self-compacting concrete and fill mortar. The pouring method is basically the same as that of the first pouring block. The construction sequence of the first-pouring block and the second-pouring block can be adjusted according to the actual construction progress on site, and the close connection of all the working procedures is guaranteed.
The volute casing poured by adopting the embedded pouring system and the embedded pouring mode is subjected to quality detection, and concrete is poured uniformly and compactly, so that the quality requirement is met.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims (4)
1. The utility model provides a pre-buried pouring system for spiral case reentrant corner which characterized in that, pre-buried pouring system includes: a concrete pump pipe (1) and a plurality of mortar pump pipes (2);
concrete pump pipe (1) and wait to cast adjacent basic dowel fixed connection in the spiral case mounting platform, concrete pump pipe (1) includes: a ring-shaped pump pipe (11) and twelve radial pump pipes (12);
the annular pump pipe (11) is sleeved outside the volute (A) to be cast;
twelve radial pump pipes (12) are positioned between the annular pump pipe (11) and the volute (A) to be poured and are arranged at intervals along the circumferential direction of the annular pump pipe (11), establishing a coordinate system by taking the center of the volute to be poured (A) as an original point, dividing the volute to be poured (A) into four quadrant areas, wherein three radial pump pipes (12) are distributed in each quadrant area, the three radial pump pipes (12) are arranged along the radial direction of the volute to be poured (A), the feeding end of each radial pump pipe (12) is connected and communicated with the annular pump pipe (11), the axial height of the radial pump pipes (12) positioned on two sides in each quadrant region along the volute (A) to be poured is higher than the axial height of the radial pump pipe (12) positioned in the middle along the volute (A) to be poured;
the mortar pump pipes (2) are located between the to-be-poured volute (A) and the radial pump pipes (12) and are arranged at intervals along the circumferential direction of the to-be-poured volute (A), a discharge port of each mortar pump pipe (2) is close to the bottom of a foundation ring in the to-be-poured volute (A), and the axial height of each mortar pump pipe (2) along the to-be-poured volute (A) is higher than that of any radial pump pipe (12) along the to-be-poured volute (A).
2. The embedded pouring system for the internal corner of the volute according to claim 1, wherein the number of the mortar pump pipes (2) is 8, and 2 mortar pump pipes (2) are distributed in each quadrant area.
3. The embedded casting system for the internal corner of the volute according to claim 1, wherein the horizontal distance from the discharge port of each radial pump pipe (12) in the concrete pump pipe (1) to the volute (A) to be cast is greater than or equal to 50 cm.
4. The embedded pouring system for the internal corner of the volute according to claim 1, wherein the horizontal distance between the discharge hole of each mortar pump pipe (2) and the volute (A) to be poured is greater than or equal to 20 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921241229.9U CN210636437U (en) | 2019-08-01 | 2019-08-01 | Embedded pouring system for internal corner of volute |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921241229.9U CN210636437U (en) | 2019-08-01 | 2019-08-01 | Embedded pouring system for internal corner of volute |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318398A (en) * | 2019-08-01 | 2019-10-11 | 中国水利水电第六工程局有限公司 | It is a kind of for the pre-buried casting system of spiral case inner corner trim and its casting method of spiral case |
-
2019
- 2019-08-01 CN CN201921241229.9U patent/CN210636437U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318398A (en) * | 2019-08-01 | 2019-10-11 | 中国水利水电第六工程局有限公司 | It is a kind of for the pre-buried casting system of spiral case inner corner trim and its casting method of spiral case |
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