CN104296952A - Direct-current transmission converter valve tower and water leakage detection system thereof - Google Patents
Direct-current transmission converter valve tower and water leakage detection system thereof Download PDFInfo
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- CN104296952A CN104296952A CN201410507433.6A CN201410507433A CN104296952A CN 104296952 A CN104296952 A CN 104296952A CN 201410507433 A CN201410507433 A CN 201410507433A CN 104296952 A CN104296952 A CN 104296952A
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- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 230000005540 biological transmission Effects 0.000 title claims abstract description 36
- 238000001514 detection method Methods 0.000 title abstract description 17
- 230000003287 optical effect Effects 0.000 claims description 66
- 229910001220 stainless steel Inorganic materials 0.000 claims description 32
- 239000010935 stainless steel Substances 0.000 claims description 32
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention relates to a direct-current transmission converter valve tower and a water leakage detection system thereof. The direct-current transmission converter valve tower comprises the water leakage detection system, The water leakage detection system comprises a water accumulating tray, a detection device, a light emitting device and a light receiving device, wherein the detection device is fixed to the lowest position of the water accumulating tray and comprises a total reflection prism, and the light emitting device, the total reflection prism and the light receiving device form a sealed light path. The water leakage detection system further comprises a light shielding cover plate covering the detection device. According to the direct-current transmission converter valve tower and the water leakage detection system of the direct-current transmission converter valve tower, the total reflection prism is used as water leakage detection equipment, whether the water leakage situation exists or not is judged through whether the light receiving device receives light signals or not, and the reliability and the accuracy of water leakage detection are ensured.
Description
Technical field
The present invention relates to a kind of direct-current transmission converter valve valve tower and water-leakage detecting system thereof, belong to direct current electric transmission and transformation field.
Background technology
Converter valve equipment is the key equipment in HVDC (High Voltage Direct Current) transmission system, and the operational reliability of converter valve equipment directly affects the job stability of DC transmission system.Converter valve equipment inner cooling system many employings water cooling mode, complicated water-cooling circulating system is docked by multiple water pipe head and realizes, in long-term operational process, very easily there is drainage in these water pipe heads place, once leaking appears in valve tower, the product parts and components performance comprising electrical equipment can be greatly affected, security of system is produced and threatens greatly, therefore, the water leakage situation of effective detection valve tower, and make feedback action timely, there is far reaching significance to the stable operation of change of current valve system.
At present, domestic existing converter valve tower leak water detdction technology, how to save bit by bit certain leaking by water accumulating disc, make the leak water detdction buoys float of foam at catchment surface, determine the height of leak water detdction buoys float according to the degree of depth of catchmenting, cover corresponding light hole and then return warning or trip signal.The water accumulating disc used due to this technology has the effect of osculum simultaneously, if sluggish flow, leak and directly flow out valve tower, if do not run up to leaking of certain depth from osculum, leak water detdction float can not float to corresponding position, and valve tower accurately cannot quote danger of leaking.Meanwhile, conventional art is owing to being open leakage inspector, and top unprotect measure, top accumulates dust and impurity very easily causes device malfunctioning.In addition, connect to form because traditional leak water detdction technology is bolted part by various parts, not only increase cost, more easily cause in-site installation inconvenience.
Summary of the invention
The object of this invention is to provide a kind of direct-current transmission converter valve valve tower, cannot accurately detect leakage water problem in order to solve existing valve tower, the object of the invention is also to provide a kind of water-leakage detecting system.
For achieving the above object, the solution of the present invention comprises: a kind of direct-current transmission converter valve valve tower, comprise water-leakage detecting system, water-leakage detecting system comprises water accumulating disc, pick-up unit, light emitting devices, optical pickup apparatus, pick-up unit is fixed on the lowest part of water accumulating disc, pick-up unit comprises total reflection prism, and light emitting devices, total reflection prism and optical pickup apparatus form closed optical path; Water-leakage detecting system also comprises a shading cover plate covered on detection means.
Pick-up unit also comprises a stainless steel body, and the tapered plane of total reflection prism is fixed on an end face of stainless steel body; In stainless steel body, be provided with two penetrating and independently optical channels, optical channel is perpendicular to the tapered plane of total reflection prism, and optical channel comprises light transmission channel and light-receiving passage.
An end face of stainless steel body is groove structure, and the tapered plane of total reflection prism embeds in the groove structure of stainless steel body.
Light transmission channel is launched optical cable by light and is connected light emitting devices, and light-receiving passage connects optical pickup apparatus by light-receiving optical cable.
A kind of water-leakage detecting system, water-leakage detecting system comprises water accumulating disc, pick-up unit, light emitting devices, optical pickup apparatus, pick-up unit is fixed on the lowest part of water accumulating disc, and pick-up unit comprises total reflection prism, and light emitting devices, total reflection prism and optical pickup apparatus form closed optical path; Water-leakage detecting system also comprises a shading cover plate covered on described pick-up unit.
Pick-up unit also comprises a stainless steel body, and the tapered plane of total reflection prism is fixed on an end face of described stainless steel body; In stainless steel body, be provided with two penetrating and independently optical channels, optical channel is perpendicular to the tapered plane of total reflection prism, and optical channel comprises light transmission channel and light-receiving passage.
An end face of stainless steel body is groove structure, and the tapered plane of total reflection prism embeds in the groove structure of stainless steel body.
Light transmission channel is launched optical cable by light and is connected light emitting devices, and light-receiving passage connects optical pickup apparatus by light-receiving optical cable.
The present invention uses total reflection prism to leak equipment as detection, utilize optical principle, whether receive light signal to judge whether by optical receiving device and there is water leakage situation, namely whether there is total reflection as detection means by prism, even if only have any to leak, also accurately can detect, ensure that reliability and the accuracy of leak water detdction.In addition, total reflection prism and extraneous dust, falling object, with dust-proof and anti-tampering function, are isolated by shading cover plate, effectively stop dust and falling object impact, prevent external light source from disturbing, ensure that detection is sensitiveer.
Accompanying drawing explanation
Fig. 1 is the structural representation of water accumulating disc;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1;
Fig. 3 is the structural representation of pick-up unit and shading cover plate;
Fig. 4 is the structural representation of pick-up unit.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
A kind of direct-current transmission converter valve valve tower, comprise water-leakage detecting system, water-leakage detecting system comprises water accumulating disc, pick-up unit, light emitting devices, optical pickup apparatus, pick-up unit is fixed on the lowest part of water accumulating disc, pick-up unit comprises total reflection prism, and light emitting devices, total reflection prism and optical pickup apparatus form closed optical path; Water-leakage detecting system also comprises a shading cover plate covered on described pick-up unit.
A kind of water-leakage detecting system, water-leakage detecting system comprises water accumulating disc, pick-up unit, light emitting devices, optical pickup apparatus, pick-up unit is fixed on the lowest part of water accumulating disc, and pick-up unit comprises total reflection prism, and light emitting devices, total reflection prism and optical pickup apparatus form closed optical path; Water-leakage detecting system also comprises a shading cover plate covered on described pick-up unit.
Based on above technical scheme, by reference to the accompanying drawings, following embodiment is provided.
The embodiment of direct-current transmission converter valve valve tower
Converter valve equipment is the key equipment in HVDC (High Voltage Direct Current) transmission system, and the operational reliability of converter valve equipment directly affects the job stability of DC transmission system.Direct-current transmission converter valve is arranged on valve tower, and corresponding inner cooling system is also arranged on valve tower.Direct-current transmission converter valve valve tower comprises water-leakage detecting system, as shown in Figure 1, this water-leakage detecting system is arranged on inside the radome immediately below valve tower, i.e. water accumulating disc 1, water accumulating disc 1 is groove design structure, when there being current to collect, ponding takes the lead in importing in water accumulating disc 1 intermediate groove, and water accumulating disc 1 inside is fixed with the framework 2 of the vertical setting supporting shading cover plate 3.Fig. 2 is the partial enlarged drawing at A place in Fig. 1.As shown in Figure 2,3, an end face of shading cover plate 3 is also vertically arranged, and is bolted with framework 2.Pick-up unit 4 is arranged on immediately below shading cover plate 3 by screwed, the height dimension of shading cover plate 3 just in time ensures that pick-up unit 4 is good fit with the ponding surface of water accumulating disc 1, select the installation site be applicable to, be conducive to when valve tower inner cooling water occurs to leak, can be made to leak the surface of total reflection prism 6 of flow detection device 4 early, leakage detected.
As shown in Figure 3, pick-up unit comprises total reflection prism 6, stainless steel body 5, and total reflection prism 6 is isosceles right angle trigonometry body, comprising: for the first right-angle surface and second right-angle surface of reflected light, for the tapered plane of transmitted light.An end face of stainless steel body 5 is designed with groove structure, groove size is the size of total reflection prism tapered plane, ensure that the tapered plane of total reflection prism just in time embeds in stainless steel body 5, glued together by surrounding, the tapered plane good contact ensureing the groove plane of stainless steel body 5 and total reflection prism 6 also and external isolation, reaches the effect of anti-gray, dust-proof, waterproof.
In stainless steel body 5, be designed with two penetrating and independently optical channels, as shown in Figure 4, optical channel is perpendicular to the tapered plane of total reflection prism 6, and optical channel is light transmission channel 11 and light-receiving passage 12.Light transmission channel 11 and light-receiving passage 12 stainless steel body 5 in and the tapered plane good contact of total reflection prism 6, are launched to total reflection prism 6 and accept utilizing emitted light.Light transmission channel 11 and light-receiving passage 12 are connected light respectively and launch optical cable 7 and light-receiving optical cable 8, optical cable head is fixed by screws in stainless steel body interior, after optical cable penetrates stainless steel body 5, space is filled up and is fixed optical cable by the mode of welding and not easily loses by the port surface coordinated, this structure ensure that the fixing that optical cable is fixing, also ensure that fiber channel is when converter valve tower occurs to leak, can not seep water in inside.
Light is launched optical cable 7 and is penetrated in the optical channel of stainless steel body 5 with light-receiving optical cable 8 one end, the other end, and light is launched optical cable 7 and is connected with light emitting devices 9, and light-receiving optical cable 8 is connected with optical pickup apparatus 10.Light emitting devices 9, total reflection prism 6 form closed optical path with optical pickup apparatus 10.
After light emitting devices 9 utilizing emitted light signal, by light transmitting optical cable 7, the light transmission channel 11 of light signal in stainless steel body 5 is emitted to the tapered plane of total reflection prism 6, light signal is through tapered plane directive right-angle surface.During No leakage, anhydrous around full transmitting prism 6, according to total reflection prism principle, the light signal that light emitting devices 9 sends is after two secondary reflections of the right-angle surface of two in total reflection prism, all inject in the light-receiving passage 12 in stainless steel body 5, be back to optical pickup apparatus 10 through light-receiving optical cable 8, optical pickup apparatus 10 detects light signal identical with energy when launching normally, proof system normal operation of terminal, alarm free action.When there is water leakage, water is had around stainless steel body 5 and total reflection prism 6, may attached water in the right-angle surface of full transmitting prism 6, light with 45 ° of incident angles from prism tapered plane directive right-angle surface time, because water is different from the refractive index of entirely launching prism, light does not meet the condition of total reflection, therefore incident light can reflect total reflection prism 5, the light signal energy reflexed in light-receiving passage 12 is caused to reflex to light signal in light-receiving passage 12 not or not, optical pickup apparatus 10 cannot detect light signal or the light signal energy detected inadequate, system terminal judges water leakage, transmission is leaked warning.
The embodiment of water-leakage detecting system
This embodiment is identical with the description about water-leakage detecting system in the embodiment of above-mentioned direct-current transmission converter valve valve tower, does not repeat here.
Be presented above concrete embodiment, but the present invention is not limited to described embodiment.Basic ideas of the present invention are above-mentioned basic scheme, and for those of ordinary skill in the art, according to instruction of the present invention, designing the model of various distortion, formula, parameter does not need to spend creative work.The change carried out embodiment without departing from the principles and spirit of the present invention, amendment, replacement and modification still fall within the scope of protection of the present invention.
Claims (8)
1. a direct-current transmission converter valve valve tower, comprise water-leakage detecting system, water-leakage detecting system comprises water accumulating disc, pick-up unit, light emitting devices, optical pickup apparatus, described pick-up unit is fixed on the lowest part of water accumulating disc, it is characterized in that, described pick-up unit comprises total reflection prism, and light emitting devices, total reflection prism and optical pickup apparatus form closed optical path; Described water-leakage detecting system also comprises a shading cover plate covered on described pick-up unit.
2. direct-current transmission converter valve valve tower according to claim 1, is characterized in that, described pick-up unit also comprises a stainless steel body, and the tapered plane of total reflection prism is fixed on an end face of stainless steel body; In stainless steel body, be provided with two penetrating and independently optical channels, described optical channel is perpendicular to the tapered plane of total reflection prism, and optical channel comprises light transmission channel and light-receiving passage.
3. direct-current transmission converter valve valve tower according to claim 2, is characterized in that, an end face of described stainless steel body is groove structure, and the tapered plane of total reflection prism embeds in the groove structure of stainless steel body.
4. direct-current transmission converter valve valve tower according to claim 3, is characterized in that, described smooth transmission channel is launched optical cable by light and connected light emitting devices, and light-receiving passage connects optical pickup apparatus by light-receiving optical cable.
5. a water-leakage detecting system as claimed in claim 1, water-leakage detecting system comprises water accumulating disc, pick-up unit, light emitting devices, optical pickup apparatus, described pick-up unit is fixed on the lowest part of water accumulating disc, it is characterized in that, described pick-up unit comprises total reflection prism, and light emitting devices, total reflection prism and optical pickup apparatus form closed optical path; Described water-leakage detecting system also comprises a shading cover plate covered on described pick-up unit.
6. water-leakage detecting system according to claim 5, is characterized in that, described pick-up unit also comprises a stainless steel body, and the tapered plane of total reflection prism is fixed on an end face of described stainless steel body; In stainless steel body, be provided with two penetrating and independently optical channels, described optical channel is perpendicular to the tapered plane of total reflection prism, and optical channel comprises light transmission channel and light-receiving passage.
7. water-leakage detecting system according to claim 6, is characterized in that, an end face of described stainless steel body is groove structure, and the tapered plane of total reflection prism embeds in the groove structure of stainless steel body.
8. water-leakage detecting system according to claim 7, is characterized in that, described smooth transmission channel is launched optical cable by light and connected light emitting devices, and light-receiving passage connects optical pickup apparatus by light-receiving optical cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410507433.6A CN104296952A (en) | 2014-09-28 | 2014-09-28 | Direct-current transmission converter valve tower and water leakage detection system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410507433.6A CN104296952A (en) | 2014-09-28 | 2014-09-28 | Direct-current transmission converter valve tower and water leakage detection system thereof |
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| CN104296952A true CN104296952A (en) | 2015-01-21 |
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| CN201410507433.6A Pending CN104296952A (en) | 2014-09-28 | 2014-09-28 | Direct-current transmission converter valve tower and water leakage detection system thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352679A (en) * | 2015-10-15 | 2016-02-24 | 国网智能电网研究院 | Fiber-type water leakage detection device |
| CN106644290A (en) * | 2015-07-28 | 2017-05-10 | 南京南瑞继保电气有限公司 | Valve tower water leakage detector based on refraction principle |
| CN108489679A (en) * | 2018-03-15 | 2018-09-04 | 中国西电电气股份有限公司 | A kind of extra-high voltage direct-current transmission converter valve leakage inspector and its detection method |
| CN108801562A (en) * | 2018-03-31 | 2018-11-13 | 特变电工新疆新能源股份有限公司 | A kind of flexible direct current transmission converter valve valve tower leakage inspector and method |
| CN109738123A (en) * | 2019-02-15 | 2019-05-10 | 南京广儒源光电科技有限公司 | A kind of leakage inspector test method |
| CN110346089A (en) * | 2019-08-07 | 2019-10-18 | 长沙皓欣工业设备有限公司 | A kind of valve leakage detecting device |
| CN112054654A (en) * | 2020-08-18 | 2020-12-08 | 许继电气股份有限公司 | Water leakage prevention device for marine flexible straight converter valve tower |
| CN113945328A (en) * | 2021-09-28 | 2022-01-18 | 中国南方电网有限责任公司超高压输电公司昆明局 | Calibration device for water leakage detection system of converter valve |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644290A (en) * | 2015-07-28 | 2017-05-10 | 南京南瑞继保电气有限公司 | Valve tower water leakage detector based on refraction principle |
| CN105352679A (en) * | 2015-10-15 | 2016-02-24 | 国网智能电网研究院 | Fiber-type water leakage detection device |
| CN105352679B (en) * | 2015-10-15 | 2019-01-04 | 国家电网公司 | A kind of optical fiber type leakage inspector |
| CN108489679A (en) * | 2018-03-15 | 2018-09-04 | 中国西电电气股份有限公司 | A kind of extra-high voltage direct-current transmission converter valve leakage inspector and its detection method |
| CN108801562A (en) * | 2018-03-31 | 2018-11-13 | 特变电工新疆新能源股份有限公司 | A kind of flexible direct current transmission converter valve valve tower leakage inspector and method |
| CN108801562B (en) * | 2018-03-31 | 2024-05-17 | 特变电工新疆新能源股份有限公司 | Flexible direct-current transmission converter valve tower water leakage detection device and method |
| CN109738123A (en) * | 2019-02-15 | 2019-05-10 | 南京广儒源光电科技有限公司 | A kind of leakage inspector test method |
| CN109738123B (en) * | 2019-02-15 | 2020-10-16 | 南京广儒源光电科技有限公司 | Water leakage detection device testing method |
| CN110346089A (en) * | 2019-08-07 | 2019-10-18 | 长沙皓欣工业设备有限公司 | A kind of valve leakage detecting device |
| CN112054654A (en) * | 2020-08-18 | 2020-12-08 | 许继电气股份有限公司 | Water leakage prevention device for marine flexible straight converter valve tower |
| CN112054654B (en) * | 2020-08-18 | 2022-02-18 | 许继电气股份有限公司 | Water leakage prevention device for marine flexible straight converter valve tower |
| CN113945328A (en) * | 2021-09-28 | 2022-01-18 | 中国南方电网有限责任公司超高压输电公司昆明局 | Calibration device for water leakage detection system of converter valve |
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Effective date of registration: 20160325 Address after: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Applicant after: Xuji Group Co., Ltd. Applicant after: State Grid Corporation of China Applicant after: State Grid Shanghai Municipal Electric Power Company Applicant after: Xuji Electric Co., Ltd. Address before: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Applicant before: Xuji Electric Co., Ltd. |
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Application publication date: 20150121 |