CN116499660A - Water leakage detection device and method for converter valve - Google Patents
Water leakage detection device and method for converter valve Download PDFInfo
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- CN116499660A CN116499660A CN202310668296.3A CN202310668296A CN116499660A CN 116499660 A CN116499660 A CN 116499660A CN 202310668296 A CN202310668296 A CN 202310668296A CN 116499660 A CN116499660 A CN 116499660A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000001514 detection method Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000003287 optical effect Effects 0.000 claims abstract description 199
- 239000000523 sample Substances 0.000 claims abstract description 39
- 239000000498 cooling water Substances 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000002708 enhancing effect Effects 0.000 claims description 15
- 230000008054 signal transmission Effects 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 9
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 230000009466 transformation Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 238000004590 computer program Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007788 liquid Substances 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
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/38—Investigating fluid-tightness of structures by using light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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Abstract
The invention discloses a water leakage detection device and method of a converter valve, and relates to the technical field of direct current power transmission and transformation, wherein the device comprises: the system comprises a detection head, an emission optical cable channel and a return optical cable channel; the detector head is used for receiving the optical signal transmitted by the transmitting optical cable channel, transmitting the optical signal to the inside of the triple prism through the inclined plane of the triple prism by utilizing the second lens, and transmitting the optical signal to the first inner wall surface of one slot of the triple prism through the reflection of the first inner wall surface of the other slot of the triple prism; after being reflected by the two right angle surfaces, the light signals are transmitted into the first lens through the inclined surface of the triangular prism, and the light signals are transmitted to the control system through the return optical cable channel through the first lens, so that the control system can judge the leakage condition of the cooling water according to the transmitted light signals; the transmitting optical cable channel is used for transmitting optical signals to the detection head according to a signal transmitting instruction of the control system; and the return optical cable channel is used for transmitting the optical signal returned by the probe to the control system. The invention can improve the sensitivity of water leakage detection.
Description
Technical Field
The invention relates to the technical field of direct current power transmission and transformation, in particular to a water leakage detection device and method of a converter valve.
Background
The converter valve is core equipment of direct current transmission engineering and is a core functional unit for realizing alternating current and direct current electric energy conversion. The converter valve is generally cooled by pure water, and a water leakage detection device is needed to be configured for monitoring whether the cooling circuit has a leakage problem. In order to avoid the leakage problem causing larger faults, we need to monitor the leakage problem earlier and solve the problem earlier.
In the prior art, in order to detect whether a valve tower of a converter valve leaks or not, a water leakage detection device is arranged at the lowest point in a shielding cover at the bottom of the valve tower. As shown in fig. 1, when the valve tower of the converter valve leaks, the leaked water can drop into the shielding cover at the bottom of the valve tower, the water leakage detection device comprises two paths of optical signal transmission channels, one path of the two paths of optical signal transmission channels is used for transmitting optical signals, the other path of the two paths of optical signal transmission channels is used for reporting optical signals, the water leakage detection device further comprises a triple prism, the transmitted optical signals are fully transmitted at the triple prism, the optical signals are transmitted to a reporting optical path, and the reporting optical path feeds the optical signals back to the control system. When the accumulated water in the bottom shielding cover reaches the height of the highest light signal refraction point on the triangular prism, most of light signals are refracted into water, the reported light signal power is greatly reduced, and the control system can send out water leakage alarm. However, in the detection mode, the converter valve needs to be leaked, water drops in the shielding cover, the accumulated water height must reach the refraction point of the optical signal on the triangular prism, the optical signal is refracted into water, an alarm is generated, when a small amount of water leakage occurs, the accumulated water level height is lower than the refraction point, the water leakage cannot be detected, effective protective measures cannot be timely adopted, and a certain potential safety hazard exists.
Disclosure of Invention
The embodiment of the invention provides a water leakage detection device of a converter valve, which is used for improving the water leakage detection efficiency and detection accuracy of the converter valve and reducing potential safety hazards, and comprises the following components: the system comprises a probe, an emission optical cable channel and a return optical cable channel;
the probe head comprises: two slots are formed in positions, corresponding to two paths of optical signal transmission lines, on right-angle edges of the triangular prism, one slot is parallel to one right-angle edge of the triangular prism, the other slot is parallel to the other right-angle edge of the triangular prism, and a reflection enhancing film is plated on a first inner wall surface of the slot opposite to the transmitting optical cable channel and a second inner wall surface of the slot opposite to the return optical cable channel;
the detector head is used for receiving the optical signal transmitted by the transmitting optical cable channel, and transmitting the optical signal into the prism through the inclined plane of the prism by using the second lens so that the optical signal is transmitted to the second inner wall surface of one slot of the prism through the reflection of the first inner wall surface of the other slot of the prism; after being reflected by the second inner wall surface, the light signal is reflected back to the inclined surface of the triple prism under the action of the reflection enhancing films plated on the first inner wall surface and the second inner wall surface, is transmitted into the first lens through the inclined surface of the triple prism, and is transmitted to the control system through the return optical cable channel through the first lens, so that the control system can judge the leakage condition of the cooling water according to the transmitted light signal;
the transmitting optical cable channel is used for transmitting the optical signals transmitted by the control system to the detection head; the return cable channel is used for transmitting the optical signals returned by the probe to the control system.
The embodiment of the invention also provides a water leakage detection method of the converter valve, which is applied to the water leakage detection device of the converter valve and is used for improving the water leakage detection efficiency and detection accuracy of the converter valve and reducing potential safety hazards, and the method comprises the following steps:
the detector head receives the optical signal transmitted by the transmitting optical cable channel, and transmits the optical signal to the inside of the triple prism through the inclined plane of the triple prism by utilizing the second lens so that the optical signal is transmitted to the second inner wall surface of one slot of the triple prism through the reflection of the first inner wall surface of the other slot of the triple prism; after being reflected by the second inner wall surface, the light signal is reflected back to the inclined surface of the triple prism under the action of the reflection enhancing films plated on the first inner wall surface and the second inner wall surface, is transmitted into the first lens through the inclined surface of the triple prism, and is transmitted to the control system through the return optical cable channel through the first lens, so that the control system can judge the leakage condition of the cooling water according to the transmitted light signal;
the optical signal emitted by the control system is transmitted to the detection head through the second lens by the emitting optical cable channel;
the return optical cable channel transmits the optical signal returned by the probe to the control system after passing through the first lens.
In an embodiment of the present invention, there is provided a water leakage detection device for a converter valve, including: the system comprises a probe, an emission optical cable channel and a return optical cable channel; the probe head comprises: two slots are formed in positions, corresponding to two paths of optical signal transmission lines, on right-angle edges of the triangular prism, one slot is parallel to one right-angle edge of the triangular prism, the other slot is parallel to the other right-angle edge of the triangular prism, and a reflection enhancing film is plated on a first inner wall surface of the slot opposite to the transmitting optical cable channel and a second inner wall surface of the slot opposite to the return optical cable channel; the second lens is used for transmitting the optical signal transmitted by the transmitting optical cable channel to the inside of the triple prism through the inclined plane of the triple prism so that the optical signal is transmitted to the second inner wall surface of one slot of the triple prism through the reflection of the first inner wall surface of the other slot of the triple prism; after being reflected by the second inner wall surface, the light signal is reflected back to the inclined surface of the triple prism under the action of the reflection enhancing films plated on the first inner wall surface and the second inner wall surface, is transmitted into the first lens through the inclined surface of the triple prism, and is transmitted to the control system through the return optical cable channel through the first lens, so that the control system can judge the leakage condition of the cooling water according to the transmitted light signal; the transmitting optical cable channel is used for transmitting the optical signals transmitted by the control system to the detection head; the return cable channel is used for transmitting the optical signals returned by the probe to the control system. Therefore, under the condition of small water leakage or in the early stage of water leakage, water leakage can be detected through the capillary phenomenon principle so as to give an alarm, the sensitivity of water leakage detection of equipment is improved, the water leakage problem can be found early, the water leakage detection efficiency and the detection accuracy of the converter valve are improved, and the potential safety hazard is reduced.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. In the drawings:
fig. 1 is a schematic view of a conventional water leakage detecting device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a water leakage detection device of a converter valve according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a probe head according to an embodiment of the present invention;
FIG. 4 is a schematic view of an optical path according to an embodiment of the present invention;
FIG. 5 is a schematic illustration of a slot capillary phenomenon provided in an embodiment of the present invention;
fig. 6 is a flowchart of a water leakage detection method of a converter valve according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings. The exemplary embodiments of the present invention and their descriptions herein are for the purpose of explaining the present invention, but are not to be construed as limiting the invention.
The term "and/or" is used herein to describe only one relationship, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist together, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C.
In the description of the present specification, the terms "comprising," "including," "having," "containing," and the like are open-ended terms, meaning including, but not limited to. Reference to the terms "one embodiment," "a particular embodiment," "some embodiments," "for example," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. The sequence of steps involved in the embodiments is used to schematically illustrate the practice of the present application, and is not limited thereto and may be appropriately adjusted as desired.
It has been found that in the prior art, in order to detect whether the valve tower of the converter valve leaks, a water leakage detection device is arranged at the lowest point in the shielding case at the bottom of the valve tower. As shown in fig. 1, when the valve tower of the converter valve leaks, the leaked water can drop into the shielding cover at the bottom of the valve tower, the water leakage detection device comprises two paths of optical signal transmission channels, one path of the two paths of optical signal transmission channels is used for transmitting optical signals, the other path of the two paths of optical signal transmission channels is used for reporting optical signals, the water leakage detection device further comprises a triple prism, the transmitted optical signals are fully transmitted at the triple prism, the optical signals are transmitted to a reporting optical path, and the reporting optical path feeds the optical signals back to the control system. When the accumulated water in the bottom shielding cover reaches the height of the highest light signal refraction point on the triangular prism, most of light signals are refracted into water, the reported light signal power is greatly reduced, and the control system can send out water leakage alarm. However, in the detection mode, the converter valve needs to be leaked, water drops in the shielding cover, the accumulated water height must reach the refraction point of the optical signal on the triangular prism, the optical signal is refracted into water, an alarm is generated, when a small amount of water leakage occurs, the accumulated water level height is lower than the refraction point, the water leakage cannot be detected, effective protective measures cannot be timely adopted, and a certain potential safety hazard exists.
For the above-mentioned research, as shown in fig. 2, an embodiment of the present invention provides a water leakage detection device of a converter valve, including: a probe 1, an emission optical cable channel 2-1, and a return optical cable channel 2-2; the probe 1 includes: two slots are formed in positions, corresponding to two paths of optical signal transmission lines, on right-angle edges of the triangular prism 1-1, of the first lens 1-2 and the second lens 1-3, one slot is parallel to one right-angle edge of the triangular prism 1-1, the other slot is parallel to the other right-angle edge of the triangular prism 1-1 (for example, as shown in fig. 3), and a reflection enhancing film is plated on a first inner wall surface a of the slot opposite to an emission optical cable channel and a second inner wall surface b of the slot opposite to a return optical cable channel (as shown in fig. 4);
the detector head 1 is used for receiving the optical signal transmitted by the transmitting optical cable channel 2-1, transmitting the optical signal into the prism 1-1 through the inclined plane of the prism 1-1 by using the second lens, and transmitting the optical signal to the second inner wall surface b of the other slot of the prism 1-1 through the reflection of the first inner wall surface a of one slot of the prism 1-1; after being reflected by the second inner wall surface b, the optical signals are reflected back to the inclined plane of the triangular prism under the action of the reflection enhancing films plated on the first inner wall surface a and the second inner wall surface b, are transmitted into the first lens 1-2 through the inclined plane of the triangular prism 1-1, and are transmitted to the control system through the return optical cable channel 2-2 through the first lens 1-2, so that the control system can determine the leakage condition of the cooling water according to the transmitted optical signals;
an emission optical cable channel 2-1 for transmitting the optical signal emitted by the control system to the probe head 1;
a return cable channel 2-2 for transmitting the optical signal returned by the probe head 1 to the control system.
In an embodiment of the present invention, there is provided a water leakage detection device for a converter valve, including: the system comprises a probe, an emission optical cable channel and a return optical cable channel; the probe head comprises: two slots are formed in positions, corresponding to two paths of optical signal transmission lines, on right-angle edges of the triangular prism, one slot is parallel to one right-angle edge of the triangular prism, the other slot is parallel to the other right-angle edge of the triangular prism, and a reflection enhancing film is plated on a first inner wall surface of the slot opposite to the transmitting optical cable channel and a second inner wall surface of the slot opposite to the return optical cable channel; the second lens is used for transmitting the optical signal transmitted by the transmitting optical cable channel to the inside of the triple prism through the inclined plane of the triple prism so that the optical signal is transmitted to the second inner wall surface of one slot of the triple prism through the reflection of the first inner wall surface of the other slot of the triple prism; after being reflected by the second inner wall surface, the light signal is reflected back to the inclined surface of the triple prism under the action of the reflection enhancing films plated on the first inner wall surface and the second inner wall surface, is transmitted into the first lens through the inclined surface of the triple prism, and is transmitted to the control system through the return optical cable channel through the first lens, so that the control system can judge the leakage condition of the cooling water according to the transmitted light signal; the transmitting optical cable channel is used for transmitting the optical signals transmitted by the control system to the detection head; the return cable channel is used for transmitting the optical signals returned by the probe to the control system. Therefore, under the condition of small water leakage or in the early stage of water leakage, water leakage can be detected through the capillary phenomenon principle so as to give an alarm, the sensitivity of water leakage detection of equipment is improved, the water leakage problem can be found early, the water leakage detection efficiency and the detection accuracy of the converter valve are improved, and the potential safety hazard is reduced.
The water leakage detection device of the converter valve will be described in detail below.
In an embodiment of the present invention, as shown in fig. 3, a schematic diagram of a probe according to an embodiment of the present invention is provided, where the probe 1 further includes: transmitting optical cable channel interfaces 1-7 and reporting optical cable channel interfaces 1-4; the transmitting optical cable channel interface 1-7 is connected with the optical cable of the transmitting optical cable channel 2-1, the return optical cable channel interface 1-4 is connected with the optical cable of the return optical cable channel 2-2, and the transmitting optical cable channel 2-1 and the return optical cable channel 2-2 jointly form the transmitting return optical cable channel 2.
In an embodiment of the present invention, as shown in fig. 2, the water leakage detection device of the converter valve further includes: and a shield case 3.
In one embodiment of the present invention, as shown in fig. 3, the probe 1 further comprises: a base 1-5, a triangular prism 1-1, a first lens 1-2 and a second lens 1-3 are hermetically encapsulated inside the base 1-5; the base is provided with two fixed round holes 1-6, and the probe 1 is fixed in the shielding shell 3 through the fixed round holes 1-6 in a screw connection mode; the base 1-5 is provided with an emission optical cable channel interface 1-7 and a return optical cable channel interface 1-4.
In one embodiment of the invention, the triangular prism is an isosceles right triangle, the inclined plane of the triangular prism is opposite to the two paths of optical signal transmission lines, and the inclined plane of the triangular prism is plated with an antireflection film.
In an embodiment of the present invention, the central axes of the first lens 1-2 and the second lens 1-3 are parallel to the light transmission direction.
In one embodiment of the present invention, the first lens 1-2 and the second lens 1-3 are cylindrical gradient refractive index lenses.
In an embodiment of the present invention, the probe 1 is specifically configured to receive a divergent light signal transmitted by the transmitting optical cable channel 2-1, refract the divergent light signal by using the second lens 1-3 with a cylindrical gradient refractive index, convert the divergent light signal into a parallel light signal, transmit the parallel light signal to the inside of the prism 1-1 through the inclined plane of the prism 1-1, sequentially reflect the parallel light signal through the first inner wall surface a and the second inner wall surface b, transmit the parallel light signal to the first lens 1-2 with a cylindrical gradient refractive index through the inclined plane of the prism 1-1, and transmit the parallel light signal to the control system through the return optical cable channel 2-2 through the first lens 1-2, so that the control system determines the leakage condition of cooling water according to the returned parallel light signal.
For example, as shown in fig. 4, in which the control system sends out an optical signal to the transmitting optical cable in the transmitting optical cable channel 2-1, the transmitting optical cable transmits the optical signal to the second lens 1-3, the second lens 1-3 transmits the optical signal to the inside of the prism 1-1 through the inclined surface of the prism 1-1, and the optical signal is transmitted to the second inner wall surface b of the other slot through the reflection of the first inner wall surface a of the slot of the prism 1-1; after reflection from the two right-angle surfaces, the optical signal is transmitted into the first lens 1-2 through the inclined surface of the triangular prism 1-1, and the first lens 1-2 transmits the optical signal back to the control system through the return optical cable in the return optical cable channel 2-2.
Specifically, the control system sends an optical signal to the water leakage detection device through an emission optical cable, the optical signal enters the 1 detection head, the optical signal is refracted through the cylindrical gradient refractive index lens, divergent light is changed into parallel light, and the parallel light reaches the inclined surface of the triple prism, the optical signal is basically transmitted at the inclined surface of the triple prism due to the antireflection film plated on the inclined surface of the triple prism, the optical signal reaches the first inner wall surface a of the slot of the triple prism, and if no cooling water leaks in the valve tower due to different refractive indexes of air and water, the medium surrounding the first inner wall surface a is air, and the optical signal is reflected by the first inner wall surface a to the second inner wall surface b of the other slot of the triple prism; similarly, the optical signal is totally reflected at the second inner wall surface b to another cylindrical gradient index lens inside the 1 probe, refracted through the lens to a return cable, and then sent back to the control system.
If there is cooling water leakage inside the valve tower, and the cooling water drops in the shielding at the bottom of the valve tower, as shown in fig. 5, even if the accumulated water is little, when the accumulated water liquid level contacts the bottom surface of the triangular prism 1-1, due to the capillary principle, the cooling water can quickly climb along the inner wall of the slot and exceed the refraction point, most of the optical signals can be refracted into the water after reaching the first inner wall surface a, a large amount of optical signals continue to be refracted into the water after the rest of the optical signals reach the second inner wall surface b, the optical power is greatly reduced, and no or a very small amount of optical signals are sent back to the control system from the return optical cable. The control system can judge whether the cooling water leaks in the valve tower according to whether the light output signal is received.
The embodiment of the invention also provides a water leakage detection method of the converter valve, which is described in the following embodiment. Because the principle of solving the problem by the method is similar to that of the water leakage detection device of the converter valve, the implementation of the method can be referred to the implementation of the water leakage detection device of the converter valve, and the repeated parts are not repeated.
As shown in fig. 6, a flow chart of a water leakage detection method of a converter valve according to an embodiment of the present invention includes:
s601: the detector head receives the optical signal transmitted by the transmitting optical cable channel, and transmits the optical signal to the inside of the triple prism through the inclined plane of the triple prism by utilizing the second lens so that the optical signal is transmitted to the second inner wall surface of one slot of the triple prism through the reflection of the first inner wall surface of the other slot of the triple prism; after being reflected by the second inner wall surface, the light signal is reflected back to the inclined surface of the triple prism under the action of the reflection enhancing films plated on the first inner wall surface and the second inner wall surface, is transmitted into the first lens through the inclined surface of the triple prism, and is transmitted to the control system through the return optical cable channel through the first lens, so that the control system can judge the leakage condition of the cooling water according to the transmitted light signal;
s602: the transmitting optical cable channel transmits optical signals to the probe according to a signal transmitting instruction of the control system;
s603: the return cable channel transmits the optical signal returned by the probe to the control system.
In one embodiment of the present invention, a probe receives an optical signal transmitted from a transmitting optical cable channel, transmits the optical signal to an inclined plane of a prism through a second lens, and transmits the optical signal to the inside of the prism, comprising: the second lens with cylindrical gradient refractive index in the probe refracts the divergent light signals transmitted by the transmitting optical cable channel into parallel light signals, and then transmits the parallel light signals into the prism through the inclined plane of the prism.
In an embodiment of the present invention, there is provided a water leakage detection device for a converter valve, including: the system comprises a probe, an emission optical cable channel and a return optical cable channel; the probe head comprises: two slots are formed in positions, corresponding to two paths of optical signal transmission lines, on right-angle edges of the triangular prism, one slot is parallel to one right-angle edge of the triangular prism, the other slot is parallel to the other right-angle edge of the triangular prism, and a reflection enhancing film is plated on a first inner wall surface of the slot opposite to the transmitting optical cable channel and a second inner wall surface of the slot opposite to the return optical cable channel; the second lens is used for transmitting the optical signal transmitted by the transmitting optical cable channel to the inside of the triple prism through the inclined plane of the triple prism so that the optical signal is transmitted to the second inner wall surface of one slot of the triple prism through the reflection of the first inner wall surface of the other slot of the triple prism; after being reflected by the second inner wall surface, the light signal is reflected back to the inclined surface of the triple prism under the action of the reflection enhancing films plated on the first inner wall surface and the second inner wall surface, is transmitted into the first lens through the inclined surface of the triple prism, and is transmitted to the control system through the return optical cable channel through the first lens, so that the control system can judge the leakage condition of the cooling water according to the transmitted light signal; the transmitting optical cable channel is used for transmitting the optical signals transmitted by the control system to the detection head; the return cable channel is used for transmitting the optical signals returned by the probe to the control system. Therefore, under the condition of small water leakage or in the early stage of water leakage, water leakage can be detected through the capillary phenomenon principle so as to give an alarm, the sensitivity of water leakage detection of equipment is improved, the water leakage problem can be found early, the water leakage detection efficiency and the detection accuracy of the converter valve are improved, and the potential safety hazard is reduced.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A water leakage detection device of a converter valve, comprising: the system comprises a probe, an emission optical cable channel and a return optical cable channel;
the probe head comprises: two slots are formed in positions, corresponding to two paths of optical signal transmission lines, on right-angle edges of the triangular prism, one slot is parallel to one right-angle edge of the triangular prism, the other slot is parallel to the other right-angle edge of the triangular prism, and a reflection enhancing film is plated on a first inner wall surface of the slot opposite to the transmitting optical cable channel and a second inner wall surface of the slot opposite to the return optical cable channel;
the detector head is used for receiving the optical signal transmitted by the transmitting optical cable channel, and transmitting the optical signal into the prism through the inclined plane of the prism by using the second lens so that the optical signal is transmitted to the second inner wall surface of one slot of the prism through the reflection of the first inner wall surface of the other slot of the prism; after being reflected by the second inner wall surface, the light signal is reflected back to the inclined surface of the triple prism under the action of the reflection enhancing films plated on the first inner wall surface and the second inner wall surface, is transmitted into the first lens through the inclined surface of the triple prism, and is transmitted to the control system through the return optical cable channel through the first lens, so that the control system can judge the leakage condition of the cooling water according to the transmitted light signal;
the transmitting optical cable channel is used for transmitting the optical signals transmitted by the control system to the detection head; the return cable channel is used for transmitting the optical signals returned by the probe to the control system.
2. The water leakage detection device of a converter valve according to claim 1, wherein the probe further comprises: transmitting optical cable channel interfaces, and reporting optical cable channel interfaces; the transmitting optical cable channel interface is connected with the optical cable of the transmitting optical cable channel, and the return optical cable channel interface is connected with the optical cable of the return optical cable channel.
3. The water leakage detection device of a converter valve according to claim 1, characterized in that the water leakage detection device of a converter valve further comprises: a shield case; the probe further comprises: fixing the round hole; the probe is fixed on the inner wall of the shielding shell through the fixing round hole in a screw connection mode.
4. The water leakage detection device of a converter valve according to claim 1, wherein the probe further comprises: and the base is provided with a triangular prism which is encapsulated on the base.
5. The water leakage detecting device of a converter valve according to claim 1, wherein the triangular prism has an isosceles right triangle shape, an inclined surface of the triangular prism is disposed opposite to the transmission line of the two paths of optical signals, and an antireflection film is plated on the inclined surface of the triangular prism.
6. The water leakage detecting device of a converter valve according to claim 1, wherein the first lens and the second lens are cylindrical gradient refractive index lenses.
7. The water leakage detecting device of a converter valve according to claim 1, wherein a central axis of the first lens and a central axis of the second lens are parallel to the light transmission direction.
8. The water leakage detecting device of a converter valve according to claim 1, wherein the second lens with cylindrical gradient refractive index in the detecting head refracts the divergent light signal transmitted from the transmitting optical cable channel into a parallel light signal, and the parallel light signal is transmitted to the inside of the triple prism through the inclined plane transmission of the triple prism, and then is transmitted to the first lens with cylindrical gradient refractive index through the inclined plane transmission of the triple prism after being reflected by the first inner wall surface and the second inner wall surface in turn, and the light signal is transmitted to the control system through the return optical cable channel through the first lens, so that the control system can judge the leakage condition of the cooling water according to the transmitted light signal.
9. A water leakage detection method for a converter valve, applied to the water leakage detection device for a converter valve according to any one of claims 1 to 8, comprising:
the detector head receives the optical signal transmitted by the transmitting optical cable channel, and transmits the optical signal to the inside of the triple prism through the inclined plane of the triple prism by utilizing the second lens so that the optical signal is transmitted to the second inner wall surface of one slot of the triple prism through the reflection of the first inner wall surface of the other slot of the triple prism; after being reflected by the second inner wall surface, the light signal is reflected back to the inclined surface of the triple prism under the action of the reflection enhancing films plated on the first inner wall surface and the second inner wall surface, is transmitted into the first lens through the inclined surface of the triple prism, and is transmitted to the control system through the return optical cable channel through the first lens, so that the control system can judge the leakage condition of the cooling water according to the transmitted light signal;
the transmitting optical cable channel transmits the optical signal transmitted by the control system to the detecting head;
the return cable channel transmits the optical signal returned by the probe to the control system.
10. The method of claim 9, wherein the probe receives the optical signal transmitted from the transmission cable path, and the optical signal is transmitted to the inside of the prism through the inclined surface of the prism by using the second lens, comprising:
the second lens with cylindrical gradient refractive index in the probe refracts the divergent light signals transmitted by the transmitting optical cable channel into parallel light signals, and then transmits the parallel light signals into the prism through the inclined plane of the prism.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117174511A (en) * | 2023-11-02 | 2023-12-05 | 西安西电电力系统有限公司 | State light reporting device and method for bypass switch of flexible direct-current transmission power module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117174511A (en) * | 2023-11-02 | 2023-12-05 | 西安西电电力系统有限公司 | State light reporting device and method for bypass switch of flexible direct-current transmission power module |
| CN117174511B (en) * | 2023-11-02 | 2024-03-01 | 西安西电电力系统有限公司 | State light reporting device and method for bypass switch of flexible direct-current transmission power module |
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