CN107747548B - Semi-submersible type hydraulic testing device of vertical axial suction centrifugal pump - Google Patents
Semi-submersible type hydraulic testing device of vertical axial suction centrifugal pump Download PDFInfo
- Publication number
- CN107747548B CN107747548B CN201710949015.6A CN201710949015A CN107747548B CN 107747548 B CN107747548 B CN 107747548B CN 201710949015 A CN201710949015 A CN 201710949015A CN 107747548 B CN107747548 B CN 107747548B
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- water suction
- centrifugal pump
- suction pipeline
- semi
- vertical axial
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- 238000012360 testing method Methods 0.000 title claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 230000003028 elevating effect Effects 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 4
- 210000003437 trachea Anatomy 0.000 claims 2
- 238000007872 degassing Methods 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of machinery, in particular to a vertical axial suction centrifugal pump semi-submersible type hydraulic testing device which comprises a testing cylinder body, a lifting table, a water suction pipeline, an execution motor, an adjusting screw rod and a degassing pipe, wherein the water suction pipeline is arranged on one side of the testing cylinder body and is connected with the testing cylinder body, an adjusting valve is further arranged on the water suction pipeline, an adapter plate is arranged on the lifting table and is convenient for a pump body to be tested to be arranged on the lifting table through the adapter plate, the adjusting screw rod is arranged between the lifting table and the adapter plate, the position adjustment of the lifting table in the vertical direction is realized through the adjusting screw rod, the execution motor is arranged on the water suction pipeline and is connected with the adjusting valve, and the degassing pipe is further arranged on the other side of the testing cylinder body. The semi-submersible hydraulic testing device provided by the invention can adapt to and match various types of vertical pumps, improves the universality and the application capacity of the testing device, and brings convenience to the installation and adjustment of the testing process of the vertical centrifugal pump.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to a vertical axial suction centrifugal pump semi-submersible type hydraulic testing device.
Background
The vertical axial suction centrifugal water pump comprises a single-stage or multi-stage pump, the pump body is compact in structure and small in occupied area, and a driving motor of the water pump is usually directly arranged on the pump body or indirectly arranged above the vertical axis of the pump. At the same rated flow, the multistage pump has discharge pressure equivalent to that of a plurality of single-stage water pumps, so that the axial force required to be balanced on the rotor of the multistage vertical pump is relatively large, wherein the axial force comprises self gravity; most centrifugal pumps have suction performance items in hydraulic tests, cavitation allowance of the pump is directly related to pump suction installation height, however, vertical pumps cannot always directly measure cavitation allowance due to the limitations of installation gravity center and structure, for vertical axial suction centrifugal pump sets, the size of a rotor installation structure is generally longer, and particularly, a multistage vertical pump is more prominent, a device rack for testing the vertical centrifugal pump is used in a pump manufacturing plant, installation space in the plant is always limited, and experimental activities of the pump mean repeated hoisting operation, wherein a series of factors related to hoisting space, such as structures and types of various vertical pumps, sizes and hoisting heights, caliber and positions of connecting pipes, weight and support of equipment and the like are involved.
Therefore, the testing device is urgently needed, various types of vertical pumps can be adapted and matched, the universal degree and the application capacity of the testing device are improved, and convenience is brought to installation and adjustment of the testing process of the vertical centrifugal pump.
Disclosure of Invention
In view of the problems, the semi-submersible hydraulic testing device provided by the invention can adapt to and match various types of vertical pumps, improves the universality and application capacity of the testing device, and brings convenience to the installation and adjustment of the testing process of the vertical centrifugal pump.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention discloses a vertical axial suction centrifugal pump semi-submersible type hydraulic testing device which comprises a testing cylinder body, a lifting table, a water suction pipeline, an execution motor, an adjusting screw rod and a degassing pipe, wherein the water suction pipeline is arranged on one side of the testing cylinder body and is connected with the testing cylinder body, the testing cylinder body is provided with sealing filling, so that the testing cylinder body is better in a sealing state, the water suction pipeline is also provided with an adjusting valve which is used for adjusting the vacuum degree in the testing cylinder body in the cavitation allowance testing process in cooperation with the degassing pipeline, the lifting table is provided with an adapter plate, a pump body to be tested is conveniently installed on the lifting table through the adapter plate, the adjusting screw rod is arranged between the lifting table and the adapter plate, the pump body to be tested is fixed in a closing manner after the corresponding installation height is determined on the testing cylinder body according to the submerging depth preset by the first-stage impeller of the pump body to be tested, and the adjusting screw rod is used for realizing position adjustment of the lifting table in the vertical direction. The execution motor is arranged on the same side of the test cylinder body, the execution motor is arranged on the water suction pipeline, the execution motor is connected with the regulating valve, and a degassing pipe is further arranged on the other side of the test cylinder body and used for vacuumizing the inside of the test cylinder body.
The test cylinder body is in a circumferential closed cylinder shape.
The test cylinder directly provides a water source for the pump body to be tested.
The water suction pipeline is a siphon water suction pipeline.
One end of the water suction pipeline is connected with the test cylinder body, and the other end of the water suction pipeline stretches into the open type water pool.
The number of the adapter plates is at least 2.
The adapter plates are symmetrically arranged on two sides of the pump body to be tested.
The sealing filling is arranged at the upper part of the test cylinder.
The invention has the advantages and beneficial effects that: the semi-submersible hydraulic testing device can adapt to and match various types of vertical pumps, improves the universality degree and the application capacity of the testing device, and brings convenience to the installation and adjustment of the testing process of the vertical centrifugal pump. The invention mainly aims at a vertical centrifugal water pump test bench device, designs a universal and adjustable mounting rack, provides quick mounting between a pump and an external interface in the application operation process of a hydraulic test project, and achieves the aims of expanding the model range of a test pump in a limited space and ensuring accurate adjustment and control of shafting connection between tested equipment and a driving machine.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of the connection between a test device and a pump under test.
FIG. 2 is a schematic diagram of a test apparatus.
Description of the reference numerals
1. Test cylinder 2, lifting table 3, adapter plate 4, water suction pipeline 5 and regulating valve
6. An actuating motor 7, an adjusting screw rod 8, a degassing pipe 9 and sealing filling
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
The utility model provides a vertical axial suction centrifugal pump semi-submerged formula water conservancy testing arrangement, as shown in fig. 2, including test barrel 1, elevating platform 2, the water suction pipeline 4, actuating motor 6, adjust lead screw 7 and degassing tube 8, water suction pipeline 4 establishes on the right side of test barrel 1, water suction pipeline 4 is connected with test barrel 1, be equipped with sealed packing 9 on the test barrel 1, make test barrel 1 better be sealed state, still be equipped with governing valve 5 on the water suction pipeline 4, be used for carrying out cavitation allowance test in-process, the cooperation degassing pipeline adjusts the vacuum in the test barrel, be provided with adapter plate 3 on elevating platform 2, be convenient for wait to test the pump body and install on elevating platform 2 through adapter plate 3, be equipped with adjust lead screw 7 between elevating platform 2 and the adapter plate 3, according to waiting to test pump body first impeller prescribed submerge the degree of depth in advance, confirm to close fixedly after reaching corresponding installation height on test barrel 1, realize elevating platform 2 in the vertical orientation's position adjustment through adjust lead screw 7. The execution motor 6 is arranged on the right side of the test cylinder 1, the execution motor 6 is arranged on the water suction pipeline 4, the execution motor 6 is connected with the regulating valve 5, and the left side of the test cylinder 1 is also provided with a degassing pipe 8 for vacuumizing the inside of the test cylinder 1. The test cylinder 1 is in a circumferential closed cylinder shape. The test cartridge 1 directly provides a water source for the pump body to be tested. The water suction pipeline 4 is a siphon water suction pipeline. One end of the water suction pipeline 4 is connected with the test cylinder 1, and the other end extends into the open water pool. The number of the adapter plates 3 is at least 2. The adapter plates 3 are symmetrically arranged at two sides of the pump body to be tested. The packing 9 is provided at the upper portion of the test cylinder 1.
As shown in fig. 1, the vertical axial suction centrifugal pump to be tested is arranged on a pump testing device bench, a degassing pipe 8 on the testing device is utilized to vacuumize, so that the suction inlet of the pump directly absorbs water from the inner cavity of a testing cylinder 1, and the water supplementing source of the pump is completed by a siphon type water suction pipeline 4 and a regulating valve 5 through an open water tank; the drainage of the pump is connected to the open water tank through a discharge pipe flange on the vertical axial suction centrifugal pump body to be tested, thereby forming a test loop. When the tested pump performs an operation parameter test, the test cylinder 1 is filled with water in advance and then is stopped in vacuum, the inlet regulating valve 5 in the test process is kept in a fully-opened state, and the outlet side regulating valve of the vertical axial suction type centrifugal pump to be tested is used for realizing the reading of each flow measuring point; when the tested pump performs cavitation allowance test, the degassing pipe 8 on the testing device is opened to vacuumize, and a certain vacuum state is maintained, at the moment, the testing device is equivalent to a semi-submerged (backward-flowing) vacuum cylinder, and the negative pressure value that the vertical axial suction centrifugal pump to be tested cannot reach the corresponding vacuum degree due to insufficient mounting height can be compensated.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. The utility model provides a vertical axial suction centrifugal pump semi-submerged formula water conservancy testing arrangement, its characterized in that, including experimental barrel, elevating platform, water suction pipeline, execution motor, adjustment lead screw and take off the trachea, water suction pipeline establishes on the right side of experimental barrel, water suction pipeline is connected with experimental barrel, be equipped with sealed packing on the experimental barrel, water suction pipeline still is equipped with the governing valve, be provided with the keyset on the elevating platform, the pump body of being convenient for wait to test installs on the elevating platform through the keyset, be equipped with the adjustment lead screw between elevating platform and the keyset, realize the position adjustment of elevating platform in the vertical direction through the adjustment lead screw, execution motor establishes on the right side of experimental barrel, execution motor establishes on water suction pipeline, execution motor is connected with the governing valve, still be equipped with the take off the trachea on the left side of experimental barrel, experimental barrel is circumference closed cylindric, experimental barrel directly is the water supply source for the test pump body that awaits measuring.
2. The vertical axial suction centrifugal pump semi-submersible hydraulic test apparatus of claim 1, wherein the water suction pipeline is a siphon water suction pipeline.
3. The vertical axial suction centrifugal pump semi-submersible hydraulic testing apparatus according to claim 1, wherein one end of the water suction pipe is connected with the test cylinder, and the other end of the water suction pipe extends into the open water tank.
4. The vertical axial suction centrifugal pump semi-submersible hydraulic testing apparatus of claim 1, wherein the number of adapter plates is at least 2.
5. The vertical axial suction centrifugal pump semi-submersible type hydraulic testing device according to claim 1, wherein the adapter plates are symmetrically arranged on two sides of the pump body to be tested.
6. The vertical axial suction centrifugal pump semi-submersible hydraulic testing apparatus of claim 1, wherein the seal packing is disposed in an upper portion of the test cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710949015.6A CN107747548B (en) | 2017-10-12 | 2017-10-12 | Semi-submersible type hydraulic testing device of vertical axial suction centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710949015.6A CN107747548B (en) | 2017-10-12 | 2017-10-12 | Semi-submersible type hydraulic testing device of vertical axial suction centrifugal pump |
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| Publication Number | Publication Date |
|---|---|
| CN107747548A CN107747548A (en) | 2018-03-02 |
| CN107747548B true CN107747548B (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710949015.6A Active CN107747548B (en) | 2017-10-12 | 2017-10-12 | Semi-submersible type hydraulic testing device of vertical axial suction centrifugal pump |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255753B (en) * | 2020-02-03 | 2022-03-22 | 海南广源隆节能环保股份有限公司 | Siphon pump |
| CN112412831B (en) * | 2020-12-08 | 2022-07-12 | 浙江省机电设计研究院有限公司 | Automatic test board for comprehensive vertical pump and test method thereof |
| CN112555167B (en) * | 2020-12-08 | 2022-10-04 | 浙江省机电设计研究院有限公司 | Automatic test board for conventional vertical pump and test method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990058115A (en) * | 1997-12-30 | 1999-07-15 | 윤종용 | Up-Down Device for Vertical Pump Test |
| WO2012110289A2 (en) * | 2011-02-16 | 2012-08-23 | Aker Subsea As | Test and inspection arrangement for subsea well equipment |
| CN203896078U (en) * | 2013-12-31 | 2014-10-22 | 上海连成（集团）有限公司 | Vertical type long shaft pump test motor base |
| KR20160094206A (en) * | 2015-01-30 | 2016-08-09 | (주)코리아웰헤드 | Hydro test device of the valve body for conveying the fluid |
| CN207393501U (en) * | 2017-10-12 | 2018-05-22 | 上海水泵制造有限公司 | A kind of vertical axial sucking centrifugal pump semi-submersible type waterpower test device |
-
2017
- 2017-10-12 CN CN201710949015.6A patent/CN107747548B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990058115A (en) * | 1997-12-30 | 1999-07-15 | 윤종용 | Up-Down Device for Vertical Pump Test |
| WO2012110289A2 (en) * | 2011-02-16 | 2012-08-23 | Aker Subsea As | Test and inspection arrangement for subsea well equipment |
| CN203896078U (en) * | 2013-12-31 | 2014-10-22 | 上海连成（集团）有限公司 | Vertical type long shaft pump test motor base |
| KR20160094206A (en) * | 2015-01-30 | 2016-08-09 | (주)코리아웰헤드 | Hydro test device of the valve body for conveying the fluid |
| CN207393501U (en) * | 2017-10-12 | 2018-05-22 | 上海水泵制造有限公司 | A kind of vertical axial sucking centrifugal pump semi-submersible type waterpower test device |
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| Publication number | Publication date |
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| CN107747548A (en) | 2018-03-02 |
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