CN211717895U - Dissolved gas sampling device in nuclear power station transformer oil - Google Patents
Dissolved gas sampling device in nuclear power station transformer oil Download PDFInfo
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- CN211717895U CN211717895U CN201921748885.8U CN201921748885U CN211717895U CN 211717895 U CN211717895 U CN 211717895U CN 201921748885 U CN201921748885 U CN 201921748885U CN 211717895 U CN211717895 U CN 211717895U
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Abstract
The utility model relates to a nuclear power station chemical detection and analysis technical field, concretely relates to dissolved gas sampling device in nuclear power station transformer oil, include: the sampler comprises a sampler body and a positioner, wherein the positioner comprises a frame structure, a clamping part and a positioning part; the sampler comprises a sampler sleeve, a sampler piston rod and a sampler needle, wherein the sampler needle is arranged at the front end of the sampler sleeve, and the sampler piston rod is inserted into the sampler sleeve from the rear end of the sampler sleeve; the clamping part is used for detachably clamping on a sampler sleeve of the sampler; the positioning part is used for setting the position of a sampler piston rod of the sampler. Clamping part centre gripping on it is on the sampler sleeve of sampler, and location portion is pressed when gaseous promotion is stretched out in the area of the sampler piston rod of sampler by the area of extraction for the sampler carries out accurate volume to pressing the area gas and gets, realizes the purpose that the accurate quantitative volume of the sampler is pressed the area gas and gets.
Description
Technical Field
The utility model relates to a nuclear power station chemical detection and analysis technical field particularly, relate to a dissolved gas sampling device in nuclear power station transformer oil.
Background
In nuclear power plants, transformers are used as common electrical components, and need to be monitored and analyzed frequently to prevent failures, for example, transformer oil in the transformers needs to be monitored regularly or irregularly.
The gases generated by the transformer under normal operation include small amounts of hydrogen, low molecular hydrocarbon gases and carbon oxides (carbon monoxide, carbon dioxide). When the transformer fails, the transformer oil and the solid insulating material can decompose gases such as hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide, carbon dioxide and the like, the gases form bubbles which are continuously dissolved in the oil through convection and diffusion in the oil, and the composition and the content of the fault gases are closely related to the fault type and the severity of the transformer, so that the latent fault existing in the transformer can be discovered as early as possible through gas chromatography analysis of the dissolved gases in the insulating oil, and the method is an important means for ensuring the safety of equipment and the stable operation of a nuclear power unit.
Whether the gas chromatograph for analyzing the dissolved gas in the transformer oil is in a normal state or not will determine the accuracy of the analysis of the dissolved gas in the transformer oil. Before the instrument is used, an analysis of the standard gas should be performed for determining the state of the instrument. And standard gas is compressed gas, uses conventional sampler, only can rely on manual work location or adjust sampler piston rod to realize taking the compressed gas ration to take a sample, and the former technique directly adopts the sampler to extract gas promptly, needs the analyst to adjust the scale, takes time, is difficult to accurate quantitative pressure gas in the high-pressure gas cylinder again. Meanwhile, the piston rod of the sampler is not limited by the original injection, and when the pressurized gas is measured and measured, the piston rod of the sampler is easily impacted by the high-pressure gas and ejected, so that the precision sampler is damaged, and the gas quantification accuracy in the sampler is difficult to ensure by the method.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, an object of the utility model is to provide a dissolved gas sampling device in nuclear power station transformer oil utilizes the location portion of cover on the sampler to fix a position the sampler piston rod, realizes the purpose that the sampler was got the accurate ration volume of gaseous pressure and is taken.
The utility model aims at realizing through the following technical scheme:
the utility model provides a dissolved gas sampling device in nuclear power station transformer oil, include: the sampler comprises a sampler body and a positioner, wherein the positioner comprises a frame body structure, a clamping part and a positioning part, and the clamping part and the positioning part are arranged on the frame body structure; the sampler comprises a sampler sleeve, a sampler piston rod and a sampler needle, wherein the sampler needle is arranged at the front end of the sampler sleeve, and the sampler piston rod is inserted into the sampler sleeve from the rear end of the sampler sleeve; the clamping part is used for clamping on a sampler sleeve of the sampler; the positioning part is used for setting the position of a sampler piston rod of the sampler.
Furthermore, the positioning part is arranged at the bottom of the frame structure and used for abutting against the rod head of the piston rod of the sampler during the extraction of the piston rod of the sampler.
Furthermore, the length of the frame structure is correspondingly set according to the amount of the measured gas under pressure.
Furthermore, a sampler fixing hole for accommodating the sampler sleeve is formed in the clamping portion.
Furthermore, a clamping piece is arranged on the frame structure to serve as a clamping part, and a sampler fixing hole is formed between the frame structure and the clamping piece.
Furthermore, the framework structure is provided with a fixed semicircular hole of the sampler, the clamping piece is provided with a fixed semicircular hole of the sampler, and the fixed semicircular holes of the two samplers are buckled to form a fixed sampler hole.
Further, the frame structure and the clamping piece are detachably connected in a buckling mode.
Further, all set up threaded hole on frame structure and the clamping piece, frame structure passes through screw detachably with the clamping piece and is connected.
Further, the frame structure and the number of the threaded holes on the clamping piece are 4.
Furthermore, the frame structure and the 4 threaded holes on the clamping piece are uniformly distributed.
The utility model discloses a dissolved gas sampling device in nuclear power station transformer oil, clamping part centre gripping on it is on the sampler sleeve of sampler, and location portion is pressed when gaseous promotion is stretched out in the area of the sampler piston rod of sampler by the extraction for the sampler is pressed gas and is carried out accurate volume to the area and is got, realizes that the sampler is pressed the purpose that the accurate quantitative volume of gas was got to the area.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
fig. 1 is an application diagram of a device for sampling dissolved gas in transformer oil of a nuclear power station provided by an embodiment of the invention;
fig. 2 is a structural diagram of a positioner in a sampling device for dissolved gas in transformer oil of a nuclear power station, which is provided by the embodiment of the invention;
wherein the reference numerals are: 1. a positioner; 2. a sampler piston rod; 3. a sampler sleeve; 4. a sampler needle; 5. a positioner small clamping piece screw fixing hole; 6. a locator small clip; 7. a sampler fixing hole; 8. A locator large clip; 9. and positioning points at the top ends of the large clamping pieces of the positioner.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
Referring to fig. 1-2, the utility model discloses a dissolved gas sampling device in nuclear power station transformer oil, include: a sampler and a positioner; the positioner comprises a frame structure, a clamping part and a positioning part, wherein the clamping part and the positioning part are arranged on the frame structure; the sampler comprises a sampler sleeve 3, a sampler piston rod 2 and a sampler needle 4, wherein the sampler needle 4 is arranged at the front end of the sampler sleeve 3, and the sampler piston rod is inserted into the sampler sleeve from the rear end of the sampler sleeve; the holding part is used for holding on the sampler sleeve 3 of the sampler, preferably detachably holding on the sampler sleeve 3 of the sampler; the location portion is used for locating sampler piston rod 2 of sampler when the sampler piston rod 2 of sampler is pushed to stretch out by the area of extraction pressure gas for the sampler carries out accurate volume to the area of pressure gas and gets. Location portion is used for right the position of the sampler piston rod of sampler is set for, and is concrete, and sampler syringe needle 4 is used for inserting the quilt sampling equipment that needs the sample, and this is stored by sampling equipment and dissolves gas in the transformer oil, owing to be high-pressure gas by sampling gas among the sampling equipment, therefore highly compressed sample gas can enter into sampler sleeve 3 from this sampler syringe needle 4 in to promote sampler piston rod 2.
The utility model discloses a dissolved gas sampling device in nuclear power station transformer oil, clamping part centre gripping on it is on the sampler sleeve 3 of sampler, and location portion fixes a position sampler piston rod 2 of sampler when the area of extracting is pressed gaseous promotion and is stretched out at area for the sampler carries out accurate volume to pressing the area gas and gets, realizes that the sampler takes the purpose that accurate quantitative volume of area gas was got.
The positioning part in this example comprises a frame structure, one side of the frame structure is used for abutting against the rod head of the sampler piston rod 2 when the sampler piston rod 2 is extracted, the hollow part of the frame structure can limit the sampler piston rod 2 in the left-right direction when the sampler piston rod is extracted, and the side of the frame structure, which is far away from the clamping part, is used for shifting the extraction length of the sampler piston rod 2, so that the sampling device is simple and convenient.
The length of the frame structure is correspondingly set according to the amount of the measured gas with pressure, and the length of the frame structure can be set according to the extraction length of the piston rod 2 of the sampler, so that the gas capacity extracted by the piston rod 2 of the sampler meets the requirement.
Specifically, in this embodiment, the holding portion is provided with a sampler fixing hole for accommodating the sampler sleeve 3, and the sampler sleeve 3 is installed in the sampler fixing hole, so that the installation and fixation stability is ensured, and the sampler cannot slide when the gas is extracted.
Furthermore, a clamping piece is arranged on the frame structure to serve as a clamping part, so that the frame structure can be understood as a clamping piece, namely, the clamping pieces are connected to clamp the sampler sleeve. In this example, the frame structure is used as the large clip, and the other clip is used as the small clip. The sampler fixed orifices have been seted up between frame structure and the clamping piece, and frame structure, clamping piece cooperation realize the centre gripping to sampler sleeve 3, the installation and the dismantlement of sampler sleeve 3 of being convenient for.
Wherein, the fixed semicircle orifice of sampler has been seted up in the framework structure, has seted up the fixed semicircle orifice of sampler on the clamping piece, forms the sampler fixed orifices behind the fixed semicircle orifice lock of two samplers, and the fixed semicircle orifice of two samplers is seted up respectively in different structures, and when 3 centre gripping of sampler sleeve, it is even to guarantee framework structure, clamping piece atress, and the centre gripping effect is better.
The frame structure and the clamping piece are preferably detachably connected in a buckling mode, and a clamping groove and a clamping head can be buckled mutually. All set up threaded hole on frame structure, the clamping piece, frame structure passes through screw detachably with the clamping piece and is connected, fixes screw in threaded hole, makes its fixed connection more reliable and more stable.
The number of the threaded holes is not limited, for example, the number of the threaded holes is 4 in the present example, 4 threaded holes can form a plane, and the stability after fixing is stronger. Preferably above-mentioned 4 screw hole equipartitions set up, guarantee that every screw atress is even, connection stability is stronger.
The present invention will be described in detail with reference to specific examples below:
the utility model discloses mainly improve the sampler that uses in measuring transformer oil standard gas, increase the locator that can accurate ration in the sampler outside, ensure not launching of sampler piston rod in the process of taking the compressed gas sample, simultaneously, through the home range who restricts the sampler piston rod, realize taking the accurate volume to the pressure standard gas in the gas cylinder and get.
Referring to fig. 1, high-pressure gas passes through a sampler needle 4 to push a sampler piston rod 2, and after the sampler piston rod 2 is positioned by a preset sampler precision positioner 1, accurate and quantitative gas is retained in a sampler sleeve 3.
Referring to fig. 2, place the sampler in sampler fixed orifices 7 of the big clamping piece 8 of locator, the screw passes through little clamping piece screw fixed orifices 5 of locator and fixes the sampler in big clamping piece 8 of locator and the little clamping piece 6 of locator, in the use, through adjusting the position of sampler in the clamping piece, use big clamping piece top setpoint 9 of locator to keep off the position to sampler piston rod 2, adjust the extension length of sampler piston rod 2 according to this, realize the sampler and take the accurate volume of pressure gas to.
The maximum sampling volume of the sampler used on site is 1ml and the minimum scale is 0.02 ml. When the sampler volume was got the gas in the standard gas steel bottle, at first inserted the steel bottle rubber plug installation department with sampler syringe needle 4 of sampler, the area in the steel bottle is pressed gas and is promoted sampler piston rod 2, and sampler piston rod 2 is after the locator is spacing, extracts the sampler, accomplishes the accurate volume of area pressure standard gas in to the steel bottle and gets.
The core of the technical scheme is that the sampler piston rod is not ejected in the process of using the sampler to sample the high-pressure gas by arranging the positioner outside the sampler, and meanwhile, the gas in the high-pressure gas cylinder is accurately measured by limiting the moving range of the sampler piston rod. The innovation point of the technical scheme is that the quantitative sampling of the gas under pressure is realized by manually positioning or adjusting the piston rod of the sampler, and the quantitative sampling of the gas under pressure is converted into the quantitative sampling of the gas under pressure by the sampler through mechanical positioning, so that the sampling process is more convenient, and the sampling amount is more accurate.
The utility model discloses an innovation point does at least:
1. according to the technical scheme, the sampler piston rod is mechanically positioned, so that the gas to be pressurized can be accurately measured.
2. According to the technical scheme, the sampler piston rod is mechanically positioned, so that the consistency of the gas measurement under pressure at each time is ensured, and the analysis deviation among different experimenters is reduced.
3. This technical scheme is through spacing to the sampler piston rod, ensures not launching the sampler piston rod in taking the pressure gas sampling process, reduces the damage probability of sampler.
Whether the state of the transformer of the nuclear power plant is normal or not is related to the safe and stable operation of the unit, and the chromatographic analysis of the dissolved gas in the transformer oil can discover latent faults existing in the oil-filled electrical equipment as soon as possible, so that the chromatographic analysis method is an important means for monitoring and guaranteeing the safe operation of the equipment, and is of great importance to the accuracy of the analysis of the dissolved gas in the transformer oil. According to the technical scheme, the positioner is additionally arranged outside the sampler, so that the sampler can accurately measure the gas under pressure, the accuracy and reliability of analysis are improved, the analysis result can more accurately reflect the actual condition of the gas in the transformer, a reliable data basis is provided for the judgment of latent faults in the transformer, and a basic guarantee is provided for the long-term safe and stable operation of the pressurized water reactor nuclear power generating unit. Furthermore, the utility model is suitable for an other electric power industry and petrochemical industry get the accurate volume of gas chromatograph standard gas, are worth affirmatively and promote.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A dissolved gas sampling device in nuclear power station transformer oil, characterized by comprising: the sampler comprises a sampler body and a positioner, wherein the positioner comprises a frame body structure, a clamping part and a positioning part, and the clamping part and the positioning part are arranged on the frame body structure; the sampler comprises a sampler sleeve, a sampler piston rod and a sampler needle, wherein the sampler needle is arranged at the front end of the sampler sleeve, and the sampler piston rod is inserted into the sampler sleeve from the rear end of the sampler sleeve; the clamping part is used for clamping a sampler sleeve of the sampler; the positioning part is used for setting the position of a sampler piston rod of the sampler.
2. The device for sampling the dissolved gas in the transformer oil of the nuclear power plant according to claim 1, wherein the positioning part is arranged at the bottom of the frame structure and used for abutting against the rod head of the sampler piston rod when the sampler piston rod is extracted.
3. The device for sampling the dissolved gas in the transformer oil of the nuclear power plant according to claim 2, wherein the length of the frame structure is set correspondingly according to the amount of the measured gas under pressure.
4. The device for sampling the dissolved gas in the transformer oil of the nuclear power plant as recited in claim 2, wherein the holding portion is provided with a sampler fixing hole for accommodating the sampler sleeve.
5. The device for sampling the dissolved gas in the transformer oil of the nuclear power plant as recited in claim 4, wherein a clip is provided on the frame structure as a clamping portion, and the sampler fixing hole is provided between the frame structure and the clip.
6. The device for sampling the dissolved gas in the transformer oil of the nuclear power plant as recited in claim 5, wherein the frame structure is provided with a sampler fixing semicircular hole, the clamping piece is provided with a sampler fixing semicircular hole, and the two sampler fixing semicircular holes are fastened to form the sampler fixing hole.
7. The device for sampling dissolved gas in nuclear power plant transformer oil according to claim 5, wherein the frame structure is detachably connected with the clip in a snap-fit manner.
8. The device for sampling the dissolved gas in the transformer oil of the nuclear power plant as recited in claim 4, wherein the frame structure and the clip are both provided with threaded holes, and the frame structure is detachably connected with the clip through screws.
9. The device for sampling dissolved gas in nuclear power plant transformer oil according to claim 8, wherein the number of the threaded holes in the frame structure and the clip is 4.
10. The device for sampling dissolved gas in nuclear power plant transformer oil according to claim 9, wherein the frame structure and the 4 threaded holes on the clamping sheet are uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921748885.8U CN211717895U (en) | 2019-10-17 | 2019-10-17 | Dissolved gas sampling device in nuclear power station transformer oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921748885.8U CN211717895U (en) | 2019-10-17 | 2019-10-17 | Dissolved gas sampling device in nuclear power station transformer oil |
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| Publication Number | Publication Date |
|---|---|
| CN211717895U true CN211717895U (en) | 2020-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921748885.8U Active CN211717895U (en) | 2019-10-17 | 2019-10-17 | Dissolved gas sampling device in nuclear power station transformer oil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933440A (en) * | 2021-09-30 | 2022-01-14 | 海南电网有限责任公司海南输变电检修分公司 | Oil gas sampling needle prevents spouting instrument |
-
2019
- 2019-10-17 CN CN201921748885.8U patent/CN211717895U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933440A (en) * | 2021-09-30 | 2022-01-14 | 海南电网有限责任公司海南输变电检修分公司 | Oil gas sampling needle prevents spouting instrument |
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