CN113882468A - Deep well pump room for deep drainage tunnel - Google Patents
Deep well pump room for deep drainage tunnel Download PDFInfo
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- CN113882468A CN113882468A CN202111023090.2A CN202111023090A CN113882468A CN 113882468 A CN113882468 A CN 113882468A CN 202111023090 A CN202111023090 A CN 202111023090A CN 113882468 A CN113882468 A CN 113882468A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 123
- 239000010865 sewage Substances 0.000 claims abstract description 7
- 230000007704 transition Effects 0.000 claims abstract description 4
- 238000013461 design Methods 0.000 claims abstract description 3
- 238000012423 maintenance Methods 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 12
- 238000010276 construction Methods 0.000 abstract description 7
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B5/00—Use of pumping plants or installations; Layouts thereof
- E03B5/04—Use of pumping plants or installations; Layouts thereof arranged in wells
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B5/00—Use of pumping plants or installations; Layouts thereof
- E03B5/04—Use of pumping plants or installations; Layouts thereof arranged in wells
- E03B5/06—Special equipment, e.g. well seals and connections for well casings or the like
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sewage (AREA)
Abstract
The invention provides a deep well pump room for a deep drainage tunnel, and belongs to the field of urban drainage. This deep well pump house includes catch water well and pump house workspace, wherein: the catchment well is designed in a rectangular shape, one end of the catchment well is used for being connected with the deep drainage tunnel, and the other end of the catchment well is connected with the pump room working area; the pump house workspace adopts circular design, and its inside is by lower supreme water inlet flow channel layer, equipment layer and the ground floor of having set gradually, and the main pipe one end of intaking is connected with the catchment well in the water inlet flow channel layer, and its other end is connected with the runner of intaking, and the runner of intaking passes through the water pump shunt tubes to be connected with the promotion main pump in the equipment layer, and this promotion main pump passes through the outlet pipe simultaneously and is connected with the play ditch on ground floor, and then promotes and discharges the rain sewage in the deep drainage tunnel. The rectangular water collection well and the large-diameter circular pump room working area are in a racket-shaped layout, so that transition connection of a deep drainage tunnel and a deep well pump room is realized, and the problem of multi-professional cross interference caused by synchronous construction is avoided.
Description
Technical Field
The invention belongs to the field of urban drainage, and particularly relates to a deep well pump house for a deep drainage tunnel.
Background
With the rapid development of cities, the requirement for the drainage capacity of drainage systems is higher and higher, and the superficial space of the ground is occupied by various living facilities and pipelines. The existing shallow underground drainage system has the problems of complex pipeline, difficult expansion of a waterlogging drainage system, great difficulty in building a drainage system and the like, and the development of subways and underground complexes also causes that the available shallow underground space is very limited. The construction of large drainage tunnels by using underground deep spaces to solve the drainage problem becomes the choice of developed foreign cities, the deep drainage tunnels can avoid mass land acquisition and removal, influence on the life of residents in the core area of the city is avoided, and the proper utilization of the deep underground spaces of 30-60 m of the city becomes one of important means for improving the drainage capacity of the city.
At present, only a few successful cases exist in the aspect of deep drainage tunnel drainage construction. The deep well pump house is one of the most core structures in the deep drainage tunnel, and mainly has the problems of low space utilization rate, multiple professional cross operations, overlong construction period, poor stability of water inlet flow state and poor water distribution uniformity and the like, thereby seriously limiting the development and application of the deep drainage tunnel.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a deep well pump house for a deep drainage tunnel, and aims to solve the problems that the existing deep well pump house is low in space utilization rate and needs cross operation and water inlet flow state in the construction process.
In order to achieve the above object, the present invention provides a deep well pump house for a deep drainage tunnel, the deep well pump house comprising a water collection well and a pump house working area, wherein:
the catchment well is designed in a rectangular shape, one end of the catchment well is used for being connected with the deep drainage tunnel, and the other end of the catchment well is connected with the pump room working area so as to send rain sewage in the deep drainage tunnel into the pump room working area and realize transition connection between the deep drainage tunnel and the pump room working area;
the pump house workspace adopts circular design, and it is inside by supreme inlet flow channel layer, equipment layer and the ground floor of having set gradually down, inlet flow channel layer is provided with into water and is responsible for, inlet flow channel and water pump shunt tubes, it is connected with the catchment well to be responsible for one end to intake, and its other end and inlet flow channel are in the same direction as connecing, simultaneously inlet flow channel passes through the water pump shunt tubes with promotion main pump in the equipment layer is connected, should promote the main pump pass through the outlet pipe with the play ditch on ground floor is connected, and then will rain sewage in the deep drainage tunnel promotes and discharges.
Preferably, the water pump shunt tubes in the pump room working area are arranged in an inclined mode at an angle of 30-60 degrees, and a ventilating shaft, a cable well and an overhaul channel are arranged in the arc areas of the corners.
As a further preference, a transverse partition wall is arranged inside the water collection well to partition the water collection well into a dry area and a wet area; meanwhile, the water collecting well and the pump room working area are provided with a longitudinal flow guide wall and a longitudinal middle partition wall along a longitudinal central axis, so that the pump room working area is divided into two independent working areas.
Preferably, a connection section is arranged in the catchment well, and the connection section adopts a gradually-changed section with a lateral gradually-enlarged and a vertical gentle slope, so that the deep drainage tunnel is smoothly connected with the catchment well.
Preferably, the water inlet channel layer is provided with a catch basin for collecting waterlogging generated on the ground during equipment maintenance and repair, and accumulated water in the catch basin is drained through an accumulated water drainage pump.
Preferably, the water inlet flow passage layer is of a structure with a gradually-changed section and a water inlet chamfer, and an evacuation pump is arranged at the tail end of the water inlet flow passage layer to evacuate the deep drainage tunnel, the water collecting well and the water inlet flow passage layer.
As further preferred, the equipment layer includes from supreme water pump layer, the motor layer and the cable layer that set gradually down, the water pump layer is used for placing the promotion main pump, the motor layer is used for placing the motor, the cable layer is used for laying power cable and telecommunication line.
Preferably, the water outlet channel of the ground floor is arranged annularly along the outer wall structure and the wall of the working area of the pump room.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
1. the rectangular water collection well is arranged at the front end of the deep well pump room for the deep drainage tunnel and is in a racket-shaped layout with a large-diameter circular pump room working area, transition connection of the deep drainage tunnel and the deep well pump room is achieved, the problem of multi-professional cross interference caused by synchronous construction is avoided, the water collection well can serve as a receiving well for a tunnel outlet at the tail end of the deep drainage tunnel, the effects of regulating storage, stabilizing water flow and shunting are achieved, and meanwhile, the problem of stability and uniformity of the water inlet flow state of a lift pump in a limited underground space is effectively solved by a method that the pump room adopts a flow channel for water distribution; the pump room working area is divided into the water inlet flow channel layer, the equipment layer and the ground layer by adopting the partitioned modular layout, so that the height space of the deep well pump room can be effectively utilized, and the underground space utilization rate of the deep well pump room and the stress strength and vibration resistance of the underground space structure are improved;
2. particularly, the water pump flow dividing pipe is obliquely arranged, and the ventilating shaft, the cable well and the maintenance channel are arranged in the arc area of the corner, so that the underground space can be effectively saved, uniform water distribution is facilitated, and the stability of the water inlet flow state of the water pump is kept;
3. meanwhile, the transverse partition walls and the longitudinal guide walls are arranged longitudinally and transversely, so that the lateral stress of the large-section water collecting well is improved, the structural stability of a rectangular area of the water collecting well is kept, meanwhile, the separation of a dry area and a wet area is realized inside the water collecting well, the overhaul and the maintenance are convenient, the longitudinal guide walls divide the working area of the pump room into two independent working areas, the steady flow and the shunt of the deep well pump room are realized, the switching function of independent half-width operation is realized, and the safety of the deep well pump room is effectively improved;
4. in addition, the connecting section is arranged inside the catchment well, the shape of the connecting section is optimized, smooth connection between the deep drainage tunnel and the water inlet channel of the catchment well can be realized, the stable flow state of the water inlet flow is kept, and vortexes are avoided.
Drawings
Fig. 1 is a schematic plan view of a deep well pump house for a deep drainage tunnel according to a preferred embodiment of the present invention;
FIG. 2 is a schematic longitudinal sectional view of a deep well pump house for a deep drainage tunnel according to a preferred embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a deep well pump house for a deep drainage tunnel according to a preferred embodiment of the present invention;
fig. 4 is a schematic plan view of a deep well pump house for a deep drainage tunnel according to another preferred embodiment of the present invention.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:
1-deep drainage tunnel, 2-water collection well, 201-joining section, 202-longitudinal guide wall, 203-transverse partition wall, 204-water collection well maintenance passage, 3-pump house working area, 301-water inlet flow passage layer, 302-water pump layer, 303-motor layer, 304-cable layer, 305-ground layer, 4-support and water stop curtain, 5-longitudinal middle partition wall, 6-water inlet main pipe, 7-water inlet flow passage, 8-water pump flow dividing pipe, 9-lifting main pump, 10-pump house maintenance passage, 11-ventilating well, 12-cable well, 13-emptying pump, 14-ground layer building, 15-accumulation water pump, 16-water outlet channel, 17-communication passage and 18-reserved vertical shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 3, a preferred embodiment of the present invention provides a deep well pump house for a deep drainage tunnel, the deep well pump house includes a water collection well 2 and a pump house working area 3, wherein:
the water collection well 2 is designed in a rectangular shape, one end of the water collection well is used for being connected with the deep drainage tunnel 1, the other end of the water collection well is connected with the pump room working area 3, so that rain sewage in the deep drainage tunnel 1 is sent into the pump room working area 3, and meanwhile, the water collection well is also used as a receiving well for a tunnel outlet at the tail end of the deep drainage tunnel 1, and transitional connection between the deep drainage tunnel 1 and the pump room working area 3 is achieved; meanwhile, a connecting section 201 is arranged in the catchment well, and the connecting section 201 adopts a gradually-changed section which is gradually enlarged laterally and is a vertical gentle slope, so that the smooth connection of the deep drainage tunnel 1 and the water inlet channel of the catchment well 2 is realized, the stable flow state of the inlet water flow is maintained, and the generation of vortexes is avoided;
the pump room working area 3 is designed in a circular shape, the interior of the pump room working area is sequentially provided with a water inlet flow channel layer 301, an equipment layer and a ground layer 305 from bottom to top, the water inlet flow channel layer 301 is provided with a water inlet main pipe 6, a water inlet flow channel 7 and a water pump shunt pipe 8, one end of the water inlet main pipe 6 is connected with the water collecting well 2, the other end of the water inlet main pipe is sequentially connected with the water inlet flow channel 7, the water inlet flow channel is connected with a lifting main pump 9 in the equipment layer through the water pump shunt pipe 8, the lifting main pump 9 is connected with a water outlet channel 16 of the ground layer 305 through a water outlet pipe, and rainwater and sewage in the deep drainage tunnel 1 are lifted and discharged;
the outer sides of the water collection well 2 and the pump room working area 3 are provided with supporting and water-stopping curtains 4, so that an underground structure frame of the deep well pump room is formed; the structural bottom plate of the deep well pump house is lower than the bottom elevation of the deep drainage tunnel 1, and is suitable for a terminal pump station of a gravity flow and pressure flow transmission system; and the indoor ground elevation of the ground layer of the deep well pump house is higher than the field elevation of the peripheral plots by more than 70cm, and the peripheral plots are preferably peripheral relief high points, so that the flood prevention requirement of the deep well pump house is met.
Further, a transverse partition wall 203 is arranged inside the water collection well 2 to separate the water collection well 2 from a dry-wet area; meanwhile, the water collection well 2 and the pump room working area 3 are provided with a longitudinal guide wall 202 and a longitudinal middle partition wall 5 along a longitudinal central axis, so that the pump room working area 3 is divided into two independent working areas. The longitudinal guide walls 202 and the transverse partition walls 203 are arranged vertically and horizontally, so that the lateral stress of the large-section water collection well 2 is improved, the structural stability of the rectangular area of the water collection well 2 is kept, and the separation of a dry area and a wet area in the water collection well 2 can be realized. The inspection and maintenance of the gate valve system of the water inlet main pipe 6 are realized by arranging the catchment well inspection channel 204 in the dry area. The water pump shunt tubes 8 in the pump room working area 3 are symmetrically arranged by inclining 30-60 degrees, preferably 45 degrees, so that the underground limited space can be saved, and the stability of uniform water distribution and water inlet flow state can be realized. Meanwhile, the ventilating shaft 11, the cable shaft 12 and the maintenance channel 10 can be arranged in the arc area of the corner, so that the space is fully utilized.
Further, the water inlet flow channel 7 adopts a structure with an equal-ratio gradual-change section and a water inlet chamfer, the uniformity of flow distribution is realized, the stability of the water inlet flow state is kept, and the generation of vortexes is avoided, the tail end of the water inlet flow channel 7 is provided with an evacuation pump 13 which is positioned at the tail part of the water inlet flow channel layer 301 and symmetrically arranged, so that the deep drainage tunnel 1, the water collection well 2 and the water inlet flow channel 7 are evacuated at low water level, and the overhaul and the maintenance are convenient. The water inlet channel layer 301 is provided with a catch basin for collecting waterlogging generated during ground equipment maintenance and emptying the waterlogging in the catch basin through a waterlogging pump 15. The emptying pump 13 and the sump pump 15 are both located in the inlet water flow passage layer 301.
Further, the equipment layer includes water pump layer 302, motor layer 303 and the cable layer 304 that sets gradually from supreme down, can effectively improve rigidity, intensity, the stability of whole underground structure through the layered structure overall arrangement, improves the anti vibration and the performance of making an uproar of falling of this kind of super deep, super large diameter structure of deep well pump house, can also make full use of underground space simultaneously. The water pump layer 302 mainly uses the beam slab layer to carry and fixedly lift the main pump 9 and the accessory equipment. The water outlet pipe of the lifting main pump 9 is mainly arranged along the wall of a working area of the deep well pump room, and is provided with an overhaul channel and an equipment hoisting overhaul port. The layer height of the water pump layer 302 is reasonably arranged in combination with the shaft connection mode of the equipment, and the clear height is not smaller than 7 m. The motor layer 303 mainly utilizes a beam slab layer to bear and fix the motor and the accessory equipment, and a crane hoisting device and a hoisting hole are arranged above the motor layer to overhaul and hoist the equipment, and the layer is required to have a clear height not less than 15 m. The cable layer 304 routes power cables and telecommunications lines through the racks or racks within the layer.
Further, the ground floor 305 includes the water outlet channel 16 and the ground floor 14, and the water outlet channel 16 is annularly arranged along the outer wall of the pump room working area 3, and is arranged in a way of being shared with the structural wall in order to meet the requirements of structural integrity and occupied space saving. The vertical height of the raceway 16 is designed by determining the height of the water level in the raceway 16 in response to the requirements of the body of water to be discharged or the structure to be treated. The ground floor building 14 sets up maintenance traveling crane and equipment room, a central control operation dispatching room and the like according to the operation requirements.
As shown in fig. 4, according to another preferred embodiment of the present invention, a communication passage 17 and a reserve shaft 18 are added for solving the communication of two deep well pump rooms or solving a long-term reserve adapter well. The communicating channel 17 is used for realizing the communicating pipe connection of the water collecting wells of the two deep well pump rooms, thereby realizing the operation switching connection of the two deep well pump rooms, and the anti-corrosion steel pipe with large diameter and high wall thickness is preferably adopted; the connecting pipe well 18 is used for realizing the switch connection and maintenance between deep tunnels and is also used for a working well and a receiving well for construction.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a deep well pump house for deep drainage tunnel which characterized in that, this deep well pump house includes catch water well (2) and pump house workspace (3), wherein:
the water collection well (2) is designed in a rectangular shape, one end of the water collection well is used for being connected with the deep drainage tunnel (1), and the other end of the water collection well is connected with the pump room working area (3) so as to send rain sewage in the deep drainage tunnel (1) into the pump room working area (3) and realize transition connection of the deep drainage tunnel (1) and the pump room working area (3);
pump house workspace (3) adopts circular design, and it is inside by lower supreme inlet channel layer (301), equipment layer and ground floor (305) of having set gradually, inlet channel layer (301) are provided with into water and are responsible for (6), intake runner (7) and water pump shunt tubes (8), intake is responsible for (6) one end and is connected with water collecting well (2), and its other end and intake runner (7) are in the same direction and connect, simultaneously intake runner (7) pass through water pump shunt tubes (8) with promotion main pump (9) in the equipment layer are connected, should promote main pump (9) through the outlet pipe with the outlet canal (16) of ground floor (305) are connected, and then will rain sewage in deep drainage tunnel (1) promotes and discharges.
2. The deep well pump house for the deep drainage tunnel according to claim 1, characterized in that the water pump shunt tubes (8) in the pump house working area (3) are arranged with an inclination of 30-60 degrees, and a ventilating shaft (11), a cable shaft (12) and a service passage (10) are arranged in the arc area of the corner.
3. The deep well pump house for deep drainage tunnel according to claim 1, characterized in that the interior of the water collection well (2) is provided with a transverse partition wall (203) to partition the water collection well (2) into wet and dry areas; meanwhile, the water collecting well (2) and the pump room working area (3) are provided with a longitudinal guide wall (202) and a longitudinal middle partition wall (5) along a longitudinal central axis, so that the pump room working area (3) is divided into two independent working areas.
4. The deep well pump house for the deep drainage tunnel according to claim 1, wherein the junction well is internally provided with an engagement section (201), and the engagement section (201) adopts a gradually-changed section with a lateral gradually-enlarged vertical gentle slope, so as to realize smooth engagement of the deep drainage tunnel (1) and the junction well (2).
5. The deep well pump house for deep drainage tunnel according to claim 1, wherein the water inlet flow channel layer (301) is provided with a catch drain for collecting waterlogging generated on the ground during maintenance of equipment and emptying accumulated water in the catch drain by a drainage pump (15).
6. The deep well pump house for deep drainage tunnel according to claim 1, wherein the water inlet flow passage layer (301) is of a structure with gradually changed section and water inlet chamfer, and is provided with an evacuation pump (13) at its end to evacuate the deep drainage tunnel (1), the water collection well (2) and the water inlet flow passage layer (301).
7. The deep well pump house for the deep drainage tunnel according to claim 1, wherein the equipment layer comprises a water pump layer (302), a motor layer (303) and a cable layer (304) which are sequentially arranged from bottom to top, the water pump layer (302) is used for placing the lifting main pump (9), the motor layer (303) is used for placing a motor, and the cable layer (304) is used for laying power cables and telecommunication lines.
8. The deep well pump house for deep drainage tunnels according to any one of claims 1 to 7, characterized in that the water outlet channels (16) of the ground floor (305) are arranged annularly along the outer wall of the pump house working area (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111023090.2A CN113882468A (en) | 2021-09-01 | 2021-09-01 | Deep well pump room for deep drainage tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111023090.2A CN113882468A (en) | 2021-09-01 | 2021-09-01 | Deep well pump room for deep drainage tunnel |
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| Publication Number | Publication Date |
|---|---|
| CN113882468A true CN113882468A (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111023090.2A Pending CN113882468A (en) | 2021-09-01 | 2021-09-01 | Deep well pump room for deep drainage tunnel |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204491721U (en) * | 2014-12-31 | 2015-07-22 | 上海市政工程设计研究总院（集团）有限公司 | A kind of comprehensive pump house system |
| CN208152225U (en) * | 2018-01-18 | 2018-11-27 | 武汉市政工程设计研究院有限责任公司 | A kind of pressure current water inlet flow channel system suitable for deeper subsurface draining Boosting pumping station |
| CN110468948A (en) * | 2019-09-06 | 2019-11-19 | 中铁二院工程集团有限责任公司 | Deep tunnel drainage system pumping plant |
| KR102101437B1 (en) * | 2019-09-27 | 2020-04-16 | 주식회사 인포월드 | Ground water supply unit and ground water supply system |
| DE212020000332U1 (en) * | 2020-12-02 | 2021-02-01 | Jiangsu Jiangda Fluid Technology Co., Ltd. | Low-vibration submersible pump for deep wells |
-
2021
- 2021-09-01 CN CN202111023090.2A patent/CN113882468A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204491721U (en) * | 2014-12-31 | 2015-07-22 | 上海市政工程设计研究总院（集团）有限公司 | A kind of comprehensive pump house system |
| CN208152225U (en) * | 2018-01-18 | 2018-11-27 | 武汉市政工程设计研究院有限责任公司 | A kind of pressure current water inlet flow channel system suitable for deeper subsurface draining Boosting pumping station |
| CN110468948A (en) * | 2019-09-06 | 2019-11-19 | 中铁二院工程集团有限责任公司 | Deep tunnel drainage system pumping plant |
| KR102101437B1 (en) * | 2019-09-27 | 2020-04-16 | 주식회사 인포월드 | Ground water supply unit and ground water supply system |
| DE212020000332U1 (en) * | 2020-12-02 | 2021-02-01 | Jiangsu Jiangda Fluid Technology Co., Ltd. | Low-vibration submersible pump for deep wells |
Non-Patent Citations (1)
| Title |
|---|
| 陈宝玉等: "《深层隧道排水系统中深隧泵站的设计与优化》", 《中国给水排水》 * |
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Application publication date: 20220104 |
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