CN212159042U - Flow resistance testing system for converter valve assembly - Google Patents
Flow resistance testing system for converter valve assembly Download PDFInfo
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- CN212159042U CN212159042U CN202021070211.XU CN202021070211U CN212159042U CN 212159042 U CN212159042 U CN 212159042U CN 202021070211 U CN202021070211 U CN 202021070211U CN 212159042 U CN212159042 U CN 212159042U
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- flow resistance
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- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 239000012530 fluid Substances 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims description 26
- 239000007924 injection Substances 0.000 claims description 26
- 239000000523 sample Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000009530 blood pressure measurement Methods 0.000 abstract 2
- 230000008676 import Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 4
- 238000004401 flow injection analysis Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a converter valve subassembly flow resistance test system, it including be used for storing fluidic storage device, its import with storage device is linked together, the export is linked together with the inflow pipe of converter valve subassembly annotate the stream pipe way, install annotate on the stream pipe way with take out the power pump to converter valve subassembly with the fluid among the storage device, install on annotating the stream pipe way with the flow meter and the differential pressure measurement mechanism of measuring the flow of annotating in the stream pipe way, converter valve subassembly's inflow pipe and outflow pipe install respectively and are used for carrying out the voltage-sharing device of voltage-sharing to the fluid, differential pressure measurement mechanism links to each other with the inflow pipe of measuring converter valve subassembly and the pressure differential between the outflow pipe with two voltage-sharing devices. The utility model discloses can make things convenient for, reliably, accurately test converter valve subassembly's flow resistance.
Description
Technical Field
The utility model relates to a converter valve subassembly flow resistance test system.
Background
The extra-high voltage converter valve is an important component of a direct current transmission system, and the reliable operation of the extra-high voltage converter valve is very important. The converter valve component can emit a large amount of heat during operation, and the service life of components such as a thyristor can be shortened when the converter valve component operates in a high-temperature environment for a long time. So that the thyristor, the reactor, and the like are cooled using cooling water. The water cooling efficiency is directly related to whether the converter valve can be operated safely.
In the process of engineering field flow testing, the problem that the flow of a few components has deviation with a required value due to different installation positions and the like is found. If the flow is too small, the cooling efficiency is influenced, and potential safety hazards exist; if the flow is too large, waste is caused. Therefore, the flow regulation is realized, the deviation is reduced, and the flow balancing is particularly important. And to achieve the flow rate of the module within the required range, the flow resistance of the module is tested, so that the flow resistance of the module is changed according to requirements. There is currently no simple system that can test the flow resistance of a converter valve assembly well.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect, provide a converter valve subassembly flow resistance test system, it can be convenient, reliably, accurately test converter valve subassembly's flow resistance.
In order to solve the technical problem, the technical scheme of the utility model is that: a converter valve assembly flow resistance testing system comprising:
a reservoir for storing a fluid;
the inlet of the injection pipeline is communicated with the storage device, and the outlet of the injection pipeline is communicated with the inflow pipe of the converter valve assembly;
a power pump mounted on the injection line to pump fluid from the reservoir to the converter valve assembly;
a flow meter installed on the injection flow pipe to measure a flow rate in the injection flow pipe;
the pressure equalizing device is used for equalizing the pressure of the fluid and is connected with the two pressure equalizing devices so as to measure the pressure difference between the inlet pipe and the outlet pipe of the converter valve assembly.
Further provided is a concrete structure of a pressure equalizing device, the pressure equalizing device includes:
the inner cylinder is communicated with the flow inlet pipe or the flow outlet pipe, and at least one part of the peripheral wall of the inner cylinder is provided with a plurality of pressure equalizing through holes;
the outer cylinder is sleeved on the part of the inner cylinder, which is provided with a plurality of pressure equalizing through holes, and the upper end part and the lower end part of the outer cylinder are respectively connected with the inner cylinder in a sealing way so as to form a pressure equalizing cavity between the outer cylinder and the inner cylinder; wherein,
the differential pressure measuring mechanism is connected with the two pressure-equalizing cavities to measure the differential pressure between the two pressure-equalizing cavities.
The pressure difference measuring mechanism comprises a pressure difference sensor, one input pipe of the pressure difference sensor is communicated with one pressure equalizing cavity, and the other input pipe of the pressure difference sensor is communicated with the other pressure equalizing cavity.
Further, in order to facilitate the communication between the input pipes and the pressure equalizing cavity, the outer cylinder is provided with probe interfaces communicated with the pressure equalizing cavity, a probe used for being connected with the probe interface is installed at the free end of each input pipe, and the input pipes are communicated with the corresponding pressure equalizing cavity through the connection between the probes and the corresponding probe interfaces.
Further in order to facilitate the connection between the inner cylinder and the inflow pipe or the outflow pipe, the lower end of the inner cylinder is provided with an inlet and outlet flange, the upper ends of the inflow pipe and the outflow pipe are provided with a connecting flange, and the inner cylinder is communicated with the inflow pipe or the outflow pipe through the connection of the inlet and outlet flange and the connecting flange.
Further, the fluid is liquid, and an exhaust valve for exhausting gas in the inner cylinder is installed at the upper end of the inner cylinder.
Further, the storage device is a storage tank or a storage tank, and an inlet of the injection pipeline is communicated with an outlet of the storage tank or the storage tank.
Further, in order to reuse the fluid, the flow resistance testing system of the converter valve assembly further comprises a drainage pipeline, wherein an inlet of the drainage pipeline is communicated with the flow outlet pipe of the converter valve assembly, and an outlet of the drainage pipeline is communicated with the storage device.
Further, in order to conveniently control the on-off of the injection pipeline and conveniently drain fluid in the storage device, a first ball valve and a second ball valve which are used for controlling the opening and the closing of the injection pipeline are arranged on the part, located between the storage device and the power pump, of the injection pipeline, a drain pipe is communicated with the part, located between the first ball valve and the second ball valve, of the injection pipeline, and a drain valve which is used for controlling the opening and the closing of the drain pipe is arranged on the drain pipe.
After the technical scheme is adopted, before the whole flow resistance testing system of the converter valve assembly is started, the converter valve assembly and the flow injection pipeline are filled with fluid, then the power pump is started, the frequency of the power pump is adjusted to adjust the flow in the flow injection pipeline, each converter valve assembly is provided with a flow-flow resistance curve, when the display value of the flow meter is a certain required value, the pressure difference measured by the pressure difference measuring mechanism is the flow resistance of the converter valve assembly under the corresponding flow, then the measured flow resistance is compared with the flow resistance standard value, whether the actual flow resistance value of the converter valve assembly is in the required range can be known, if the actual flow resistance value is not in the required range, the flow resistance of the converter valve assembly is changed according to the requirement, the utility model can conveniently and reliably test the actual flow resistance of the converter valve assembly, further conveniently match proper flow for the converter valve assembly, and simultaneously ensure the cooling effect of the converter valve assembly, but also does not waste fluid; the pressure equalizing device pressure equalizes the fluid at the inlet pipe and the outlet pipe of the converter valve assembly, thereby ensuring the measurement accuracy of the pressure difference sensor and ensuring the measured flow resistance value to be more accurate; the utility model discloses an entire system's simple structure, with low costs, easy to carry out.
Drawings
FIG. 1 is a schematic structural view of a flow resistance testing system of a converter valve assembly according to the present invention;
fig. 2 is a schematic structural view of the pressure equalizing device of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
fig. 4 is a connection diagram of the pressure equalizing device and the converter valve assembly according to the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
As shown in fig. 1, 2, 3 and 4, a flow resistance testing system for a converter valve assembly comprises:
a storage device 1 for storing a fluid;
an injection pipeline 2, the inlet of which is communicated with the storage device 1, and the outlet of which is communicated with an inflow pipe 101 of the converter valve assembly 100;
a power pump 3 installed on the injection pipe 2 to pump the fluid in the storage device 1 to the converter valve assembly 100;
a flow meter 4 installed on the injection flow pipe 2 to measure a flow rate in the injection flow pipe 2;
and a differential pressure measuring mechanism connected to the inlet pipe 101 and the outlet pipe 102 of the converter valve assembly 100 to measure a differential pressure between the inlet pipe 101 and the outlet pipe 102 of the converter valve assembly 100.
In this embodiment, the storage device 1 is a storage tank or a storage tank, and the inlet of the injection pipeline 2 is communicated with the outlet of the storage tank or the storage tank. To facilitate the refilling of the reservoir or tank with fluid, the reservoir or tank is provided with a refill port 11.
Specifically, before starting the whole flow resistance testing system of the converter valve assembly, the converter valve assembly 100 and the flow injection pipeline 2 are filled with fluid, then the power pump 3 is started, the frequency of the power pump 3 is adjusted to adjust the flow in the flow injection pipeline 2, each converter valve assembly 100 has a flow-flow resistance curve, when the display value of the flowmeter 4 is a certain required value, the differential pressure measured by the differential pressure measuring mechanism is the flow resistance of the converter valve assembly 100 under the corresponding flow, the measured flow resistance is compared with the flow resistance, whether the actual flow resistance value of the converter valve assembly 100 is in the required range can be known, if not, the flow resistance of the converter valve assembly 100 is changed according to the requirement, the utility model can conveniently and reliably test the actual flow resistance of the converter valve assembly 100, and further conveniently match the proper flow for the converter valve assembly 100, fluid is not wasted while ensuring the cooling effect of the converter valve assembly 100.
In the present embodiment, as shown in fig. 4, in order to improve the accuracy of the measurement result of the differential pressure measuring mechanism, the inflow pipe 101 and the outflow pipe 102 of the converter valve assembly 100 are respectively provided with the pressure equalizing devices 5 for equalizing the pressure of the fluid, and the differential pressure measuring mechanism is connected to the two pressure equalizing devices 5.
As shown in fig. 2, 3 and 4, the pressure equalizing device 5 includes:
the inner cylinder 51 is communicated with the flow inlet pipe 101 or the flow outlet pipe 102, and at least one part of the peripheral wall of the inner cylinder 51 is provided with a plurality of pressure equalizing through holes 57;
the outer cylinder 52 is sleeved on the part of the inner cylinder 51 provided with the pressure equalizing through holes 57, and the upper end part and the lower end part of the outer cylinder 52 are respectively connected with the inner cylinder 51 in a sealing way so that a pressure equalizing cavity 53 is formed between the outer cylinder 52 and the inner cylinder 51; wherein,
the differential pressure measuring mechanism is connected to the two pressure-equalizing chambers 53 to measure the differential pressure between the two pressure-equalizing chambers 53.
As shown in fig. 1, the differential pressure measuring mechanism includes a differential pressure sensor 6, and one input pipe 7 of the differential pressure sensor 6 communicates with one pressure equalizing chamber 53, and the other input pipe 7 communicates with the other pressure equalizing chamber 53.
As shown in fig. 2, 3 and 4, in order to facilitate the communication between the input pipes 7 and the pressure equalizing chamber 53, the outer cylinder 52 is provided with probe interfaces 54 communicated with the pressure equalizing chamber 53, a probe for connecting with the probe interface 54 is mounted at the free end of each input pipe 7, and the input pipes 7 are communicated with the corresponding pressure equalizing chambers 53 through the connection of the probe and the corresponding probe interfaces 54.
Specifically, the utility model discloses a pressure-equalizing device 5 carries out the pressure-equalizing to the fluid of the inflow pipe 101 of converter valve subassembly 100 and outflow pipe 102 department, and then has guaranteed the accuracy that differential pressure sensor 6 measured for measured flow resistance value is more accurate. The utility model discloses an entire system's simple structure, with low costs, easy to carry out.
In the present embodiment, as shown in fig. 2, 3 and 4, in order to facilitate connection between the inner cylinder 51 and the inlet pipe 101 or the outlet pipe 102, an inlet and outlet flange 55 is provided at a lower end of the inner cylinder 51, a connecting flange 103 is provided at an upper end of the inlet pipe 101 and the outlet pipe 102, and the inner cylinder 51 is communicated with the inlet pipe 101 or the outlet pipe 102 through connection between the inlet and outlet flange 55 and the connecting flange 103.
In this embodiment, the fluid is liquid, and the upper end of the inner cylinder 51 is provided with an exhaust valve 56 for exhausting gas therein.
In order to make it possible to recycle the fluid, the flow resistance testing system of the converter valve assembly further comprises a drainage pipe 10, as shown in fig. 1, an inlet of the drainage pipe 10 is communicated with an outlet pipe 102 of the converter valve assembly 100, and an outlet is communicated with the storage device 1.
As shown in fig. 1, in order to conveniently control the on-off of the injection pipe 2 and drain the fluid in the storage device 1, a first ball valve 81 and a second ball valve 82 for controlling the opening and closing of the injection pipe 2 are installed on a portion between the storage device 1 and the power pump 3, a drain pipe 9 is communicated with a portion between the first ball valve 81 and the second ball valve 82 of the injection pipe 2, and a drain valve 83 for controlling the opening and closing of the drain pipe 9 is installed on the drain pipe 9.
Specifically, the first ball valve 81 is closed, the storage device 1 is not communicated with the converter valve assembly 100, and the converter valve assembly 100 is conveniently filled with fluid; opening the first ball valve 81, closing the second ball valve 82, and opening the drain valve 83, the fluid in the storage device 1 is conveniently discharged through the drain pipe 9; opening the first and second ball valves 81 and 82 and closing the drain valve 83 facilitates injection of fluid into the converter valve assembly 100 by the power pump 3.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (9)
1. A flow resistance testing system of a converter valve assembly is characterized in that,
it includes:
a storage device (1) for storing a fluid;
an injection pipeline (2) with an inlet communicated with the storage device (1) and an outlet communicated with an inflow pipe (101) of the converter valve assembly (100);
a power pump (3) mounted on the injection pipe (2) to pump the fluid in the storage device (1) to the converter valve assembly (100);
a flow meter (4) mounted on the injection flow pipe (2) to measure a flow rate in the injection flow pipe (2);
the pressure equalizing device comprises a pressure difference measuring mechanism, wherein pressure equalizing devices (5) used for equalizing the pressure of fluid are respectively arranged on an inlet pipe (101) and an outlet pipe (102) of a converter valve assembly (100), and the pressure difference measuring mechanism is connected with the two pressure equalizing devices (5) to measure the pressure difference between the inlet pipe (101) and the outlet pipe (102) of the converter valve assembly (100).
2. The converter valve assembly flow resistance testing system of claim 1,
the pressure equalizing device (5) comprises:
the inner cylinder (51), the said inner cylinder (51) is communicated with said inflow pipe (101) or outflow pipe (102), the perisporium of at least a part of the said inner cylinder (51) has multiple pressure equalizing through holes (57);
the outer cylinder (52), the outer cylinder (52) is sleeved on the part of the inner cylinder (51) provided with a plurality of pressure equalizing through holes (57), and the upper end part and the lower end part of the outer cylinder (52) are respectively connected with the inner cylinder (51) in a sealing manner, so that a pressure equalizing cavity (53) is formed between the outer cylinder (52) and the inner cylinder (51); wherein,
the differential pressure measuring mechanism is connected with the two pressure equalizing chambers (53) to measure the differential pressure between the two pressure equalizing chambers (53).
3. The converter valve assembly flow resistance testing system of claim 2,
the differential pressure measuring mechanism comprises a differential pressure sensor (6), one input pipe (7) of the differential pressure sensor (6) is communicated with one pressure equalizing cavity (53), and the other input pipe (7) is communicated with the other pressure equalizing cavity (53).
4. The converter valve assembly flow resistance testing system of claim 3,
the outer cylinder (52) is provided with a probe interface (54) communicated with the pressure equalizing cavity (53), a probe used for being connected with the probe interface (54) is installed at the free end of each input pipe (7), and the input pipes (7) are communicated with the corresponding pressure equalizing cavity (53) through the connection of the probes and the corresponding probe interfaces (54).
5. The converter valve assembly flow resistance testing system of claim 2,
the lower end of the inner cylinder (51) is provided with an inlet and outlet flange (55), the upper ends of the inlet pipe (101) and the outlet pipe (102) are provided with a connecting flange (103), and the inner cylinder (51) is communicated with the inlet pipe (101) or the outlet pipe (102) through the connection of the inlet and outlet flange (55) and the connecting flange (103).
6. The converter valve assembly flow resistance testing system of claim 5,
the fluid is liquid, and the upper end of the inner cylinder (51) is provided with an exhaust valve (56) for exhausting gas in the inner cylinder.
7. The converter valve assembly flow resistance testing system of claim 1,
the storage device (1) is a storage tank or a storage tank, and an inlet of the injection pipeline (2) is communicated with an outlet of the storage tank or the storage tank.
8. The converter valve assembly flow resistance testing system of claim 1,
the drainage device further comprises a drainage pipeline (10), wherein an inlet of the drainage pipeline (10) is communicated with a flow outlet pipe (102) of the converter valve assembly (100), and an outlet of the drainage pipeline is communicated with the storage device (1).
9. The converter valve assembly flow resistance testing system of claim 1,
a first ball valve (81) and a second ball valve (82) for controlling opening and closing are mounted on the part, located between the storage device (1) and the power pump (3), of the injection pipeline (2), a drainage pipe (9) is communicated with the part, located between the first ball valve (81) and the second ball valve (82), of the injection pipeline (2), and a drainage valve (83) for controlling opening and closing is mounted on the drainage pipe (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021070211.XU CN212159042U (en) | 2020-06-11 | 2020-06-11 | Flow resistance testing system for converter valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021070211.XU CN212159042U (en) | 2020-06-11 | 2020-06-11 | Flow resistance testing system for converter valve assembly |
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| Publication Number | Publication Date |
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| CN212159042U true CN212159042U (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021070211.XU Active CN212159042U (en) | 2020-06-11 | 2020-06-11 | Flow resistance testing system for converter valve assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115753063A (en) * | 2022-11-29 | 2023-03-07 | 中国南方电网有限责任公司超高压输电公司广州局 | Detection device for detecting conduction condition of valve tower cooling branch of converter station |
-
2020
- 2020-06-11 CN CN202021070211.XU patent/CN212159042U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115753063A (en) * | 2022-11-29 | 2023-03-07 | 中国南方电网有限责任公司超高压输电公司广州局 | Detection device for detecting conduction condition of valve tower cooling branch of converter station |
| CN115753063B (en) * | 2022-11-29 | 2024-03-08 | 中国南方电网有限责任公司超高压输电公司广州局 | Detection device for detecting conduction condition of valve tower cooling branch of converter station |
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