CN204154536U - Full-sealed sampling device - Google Patents

Full-sealed sampling device Download PDF

Info

Publication number
CN204154536U
CN204154536U CN201420500728.6U CN201420500728U CN204154536U CN 204154536 U CN204154536 U CN 204154536U CN 201420500728 U CN201420500728 U CN 201420500728U CN 204154536 U CN204154536 U CN 204154536U
Authority
CN
China
Prior art keywords
communicated
leg
valve port
sampling
full
Prior art date
Application number
CN201420500728.6U
Other languages
Chinese (zh)
Inventor
杨震洋
黄汉贤
万彩云
熊婷婷
林翠婷
吴彩霞
钟俊杰
Original Assignee
广东电网公司珠海供电局
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广东电网公司珠海供电局 filed Critical 广东电网公司珠海供电局
Priority to CN201420500728.6U priority Critical patent/CN204154536U/en
Application granted granted Critical
Publication of CN204154536U publication Critical patent/CN204154536U/en

Links

Abstract

The utility model discloses a kind of Full-sealed sampling device, comprise sealing adaptor, fixture splice, connecting leg, sampling injector, sealing adaptor first end is threaded with equipment sample tap, second end is threaded with fixture splice, fixture splice comprises stationary pipes, lining, stationary pipes first end is communicated with sealing adaptor second end, stationary pipes second end is connected with bush threads, lining offers cavity, cavity bottom is provided with tapered sleeve, stationary pipes second end, tapered sleeve, lining is respectively equipped with the first fixed orifice matched with connecting leg, second fixed orifice, 3rd fixed orifice, first fixed orifice, second fixed orifice, 3rd fixed orifice is communicated with formation connecting leg mounting hole, connecting leg is arranged in connecting leg mounting hole, connecting leg first end is communicated with stationary pipes by connecting leg mounting hole, connecting leg second end is communicated with sampling injector.Above-mentioned Full-sealed sampling device, can realize hermetically sealed sampling, and structure is simple, and easy to operate, gained sample purity is higher.

Description

Full-sealed sampling device

Technical field

The utility model relates to allocated transmission complete equipment field, particularly a kind of Full-sealed sampling device.

Background technology

In the dielectric oil chromatographic analysis process of the test of oil-using units, drawing oil sample is one of most important link, and institute's sample thief directly affects the accuracy judged device interior health status.According to " Gases Dissolved in Transformer Oil analysis and judge directive/guide " regulation: " draw oil sample from equipment and 100ml glass syringe should be used to carry out under whole sealing status, oil sample must not contact with air.”

At present, many oil-using units of transformer station all do not install the joint of hermetically sealed syringe sampling additional when producing, cannot realize hermetically sealed sampling.The method drawn oil sample equipment sample tap is opened direct oil extraction gravity flow, then use Brown Glass Brown glass bottles and jars only near flow export splendid attire, make oil from flowing in sampling jar, get back to testing laboratory and extract process with syringe again, this sampling method makes test specimen be exposed to for twice in air, can cause gases dissolved in insulation oil component loss (especially H 2component), cause test figure inaccurate, impact analysis is diagnosed.Therefore, will produce data error when carrying out stratographic analysis, during impact runs, the health status diagnosis of equipment, is unfavorable for the safe operation of equipment.Meanwhile, carrying out sampling needs ascend operation, and operating personnel are easily tired, and the course of work must be noted keeping a safe distance with equipment live position in the moment, and psychological pressure is larger.In sum, a kind of sampler realizing hermetically sealed sampling is developed very necessary.

Summary of the invention

Based on this, the purpose of this utility model is the defect overcoming prior art, provides a kind of Full-sealed sampling device, can realize hermetically sealed sampling, and structure is simple, and easy to operate, gained sample purity is higher.

Its technical scheme is as follows:

A kind of Full-sealed sampling device, comprises sealing adaptor, fixture splice, connecting leg, sampling injector;

Described sealing adaptor first end is threaded with equipment sample tap, and the second end is threaded with fixture splice;

Described fixture splice comprises stationary pipes, lining;

Described stationary pipes first end is communicated with sealing adaptor second end, described stationary pipes second end is connected with bush threads, described lining offers cavity, described cavity bottom is provided with tapered sleeve, described stationary pipes second end, tapered sleeve, lining are respectively equipped with the first fixed orifice matched with described connecting leg, the second fixed orifice, the 3rd fixed orifice;

Described first fixed orifice, the second fixed orifice, the 3rd fixed orifice are communicated with formation connecting leg mounting hole, described connecting leg is arranged in described connecting leg mounting hole, described connecting leg first end is communicated with described stationary pipes by connecting leg mounting hole, and described connecting leg second end is communicated with described sampling injector.

Further, described sealing adaptor comprises and gets oil head, lock sleeve, intervalve;

Described oil head first end of getting is threaded by the external thread of internal thread with equipment sample tap, described in get oil head second end and be provided with mounting hole and its outer wall is provided with external thread;

Described intervalve first end is provided with top, is provided with protuberance in the middle part of intervalve outer wall, and intervalve inserts the valve port that in described mounting hole and described top holds out against equipment sample tap, gets the second end of oil head described in described protuberance is adjacent to;

Described lock sleeve is provided with internal thread, and lock sleeve one end is provided with compressed part, and described lock sleeve is enclosed within outside described intervalve, is coordinated, make described compressed part compress described protuberance by the internal thread of described lock sleeve with the described external thread getting oil head second end.

Further, the connection of thread getting oil head and equipment sample tap described in is provided with O-ring seal.

Further, described sealing adaptor first end outer wall is provided with external thread, is provided with limiting section in the middle part of sealing adaptor outer wall, and the external thread of described sealing adaptor first end is threaded with the internal thread of equipment sample tap, and described limiting section is adjacent to equipment sample tap.

Further, the connection of thread of described sealing adaptor and equipment sample tap is provided with O-ring seal.

Further, also comprise rapid-acting coupling, described rapid-acting coupling one end is communicated with sealing adaptor, and the other end is communicated with stationary pipes.

Further, described rapid-acting coupling comprises joint parent, joint cylinder;

Joint parent outer wall is provided with First terrace, second step face, cutting ferrule, described cutting ferrule to be set on First terrace and to form container cavity with second step face, spring is provided with in described container cavity, described cutting ferrule inwall is provided with dividing plate, described dividing plate is separated out chamber of stepping down in container cavity, joint parent is provided with through hole, and through-hole wall is embedded with at least two steel balls, steps down in chamber described at least two described steel balls can embed;

Connector post surface is provided with at least two grooves, and described joint cylinder inserts joint parent, and the steel ball on joint parent snaps in groove corresponding to connector post surface.

Further, also comprise cross-over valve, described cross-over valve is provided with the first valve port, the second valve port, and described first valve port is communicated with described connecting leg second end, and described second valve port is communicated with described sampling injector.

Further, also comprise drain line, described cross-over valve also comprises the 3rd valve port, and described drain line is communicated with described 3rd valve port.

Further, described cross-over valve also comprises adjuster bar, and described adjuster bar is for regulating the first valve port to be communicated with the second valve port or the first valve port is communicated with the 3rd valve port.

Below the advantage of preceding solution or principle are described:

Above-mentioned Full-sealed sampling device, by the object arranging sealing adaptor, fixture splice, connecting leg, sampling injector reach hermetically sealed sampling.

1, the sealing of Full-sealed sampling device is good, and structure is simple, and easy to operate, oil sample can not contact with air, and gained sample purity is higher;

2, the design of sealing adaptor solves the problem that oil-using units does not install the joint of sampling injector additional, and different sealing adaptors can be selected according to the sample tap of different model, can guarantee in use procedure that oil sample can flow out from sample tap, can realize sealing sampling, oil sample can not be excessive simultaneously;

3, connecting leg is fixed up by fixture splice, avoids the loss of component in oil sample, improves the authenticity of sample and the accuracy of stratographic analysis experiment;

4, sampling injector is used for transfer and the process of sample, uses simple and convenient.

Accompanying drawing explanation

Fig. 1 is the structural representation of the Full-sealed sampling device described in the utility model embodiment 1;

Fig. 2 is the structural representation of the Full-sealed sampling device described in the utility model embodiment 2;

Fig. 3 is the structural representation of the sealing adaptor described in the utility model embodiment 1;

Fig. 4 is the structural representation of the sealing adaptor described in the utility model embodiment 2;

Fig. 5 is the structural representation of the fixture splice described in the utility model embodiment;

Fig. 6 is the structural representation of the rapid-acting coupling described in the utility model embodiment;

The view that the first valve port that Fig. 7 is the cross-over valve described in the utility model embodiment is communicated with the second valve port;

The view that the first valve port that Fig. 8 is the cross-over valve described in the utility model embodiment is communicated with the 3rd valve port.

Description of reference numerals:

1, sealing adaptor, 2, fixture splice, 3, connecting leg, 4, sampling injector, 5, rapid-acting coupling, 6, cross-over valve, 7, drain line, 10, O-ring seal, 11, get oil head, 12, lock sleeve, 13, intervalve, 20, stationary pipes, 21, lining, 50, joint parent, 51, joint cylinder, 60, adjuster bar, 61, first valve port, 62, second valve port, 63, 3rd valve port, 120, protuberance, 121, compressed part, 130, top, 200, connecting leg mounting hole, 210, tapered sleeve, 500, through hole, 501, steel ball, 502, spring, 503, to step down chamber, 504, cutting ferrule, 510, groove.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail:

As shown in Fig. 1,2,5, the Full-sealed sampling device of the present embodiment, comprises sealing adaptor 1, fixture splice 2, connecting leg 3, sampling injector 4;

Described sealing adaptor 1 first end is threaded with equipment sample tap, and the second end is threaded with fixture splice 2;

Described fixture splice 2 comprises stationary pipes 20, lining 21;

Described stationary pipes 20 first end is communicated with sealing adaptor 1 second end, described stationary pipes 20 second end is threaded with lining 21, described lining 21 offers cavity, described cavity bottom is provided with tapered sleeve 210, described stationary pipes 20 second end, tapered sleeve 210, lining 21 are respectively equipped with the first fixed orifice matched with described connecting leg 3, the second fixed orifice, the 3rd fixed orifice;

Described first fixed orifice, the second fixed orifice, the 3rd fixed orifice are communicated with connecting leg mounting hole 200, described connecting leg 3 is arranged in described connecting leg mounting hole 200, described connecting leg 3 first end is communicated with described stationary pipes 20 by connecting leg mounting hole, and described connecting leg 3 second end is communicated with described sampling injector 4.

Above-mentioned Full-sealed sampling device, by the object arranging sealing adaptor 1, fixture splice 2, connecting leg 3, sampling injector 4 reach hermetically sealed sampling.The sealing of Full-sealed sampling device is good, structure is simple, easy to operate, oil sample can not contact with air, gained sample purity is higher, the design of sealing adaptor 1 solves the problem that oil-using units does not install the joint of sampling injector 4 additional, and different sealing adaptors 1 can be selected according to the sample tap of different model, can guarantee in use procedure that oil sample can flow out from sample tap, sealing sampling can be realized simultaneously, oil sample can not be excessive, connecting leg 3 is fixed up by fixture splice 2, avoid the loss of component in oil sample, improve the authenticity of sample and the accuracy of stratographic analysis experiment, sampling injector 4 is for the transfer of sample and process, use simple and convenient, sampling work causes ground for 3 times by long and narrow connecting leg to carry out, bottom surface operation is changed into by existing pure work high above the ground, operation easily, effective reduction ergonomic harm, reduce the risk of electric shock and falling from high altitude simultaneously, reduce induced electricity to the injury of operator.

Embodiment one

As shown in Figure 1,3, sealing adaptor 1 described in the present embodiment comprises and gets oil head 11, lock sleeve 12, intervalve 13;

Described oil head 11 first end of getting is threaded by the external thread of internal thread with equipment sample tap, described in get oil head 11 second end and be provided with mounting hole and its outer wall is provided with external thread;

Described intervalve 13 first end is provided with top 130, is provided with protuberance 120 in the middle part of intervalve 13 outer wall, and intervalve 13 inserts the valve port that in described mounting hole and described top 130 holds out against equipment sample tap, gets the second end of oil head 11 described in described protuberance 120 is adjacent to;

Described lock sleeve 12 is provided with internal thread, lock sleeve 12 one end is provided with compressed part 121, described lock sleeve 12 is set on outside described intervalve 13, coordinated with the described external thread getting oil head 11 second end by the internal thread of described lock sleeve 12, make described compressed part 121 compress described protuberance 120, spin in process, the seal valve of equipment sample tap can be backed down in top 130, guarantee that oil sample can flow out smoothly, simultaneously good seal between sealing adaptor 1 and sample tap, oil sample can not be excessive.

Described oil head 11 of getting is provided with O-ring seal 10 with the connection of thread of equipment sample tap, and O-ring seal 10 ensures good sealing.

As shown in Figure 6, in the present embodiment, rapid-acting coupling 5 is also comprised, described rapid-acting coupling 5 one end is communicated with sealing adaptor 1, and the other end is communicated with stationary pipes 20, by rapid-acting coupling 5, do not need instrument just can realize being communicated with or disconnection between sealing adaptor 1 with fixture splice 2, convenient and reliable.Described rapid-acting coupling 5 comprises joint parent 50, joint cylinder 51; Joint parent 50 comprises outer wall and is provided with First terrace, second step face, cutting ferrule 504, described cutting ferrule 504 to be set on First terrace and to form container cavity with second step face, spring 502 is provided with in described container cavity, described cutting ferrule 504 inwall is provided with dividing plate, described dividing plate is separated out chamber 503 of stepping down in container cavity, joint parent 50 is provided with through hole 500, and through hole 500 inwall is embedded with at least two steel balls 501, steps down in chamber 503 described at least two described steel balls 501 can embed; Joint cylinder 51 is provided with at least two grooves 510 on the surface, and described joint cylinder 51 inserts joint parent 50, and the steel ball 501 on joint parent 50 snaps in groove 510 corresponding to joint cylinder 51 surface.

When inserting joint cylinder 51, push cutting ferrule 504 open, spring 502 in container cavity is subject to dividing plate extruding, described chamber 503 of stepping down is communicated with the inwall being embedded with steel ball 501, described joint cylinder 51 is inserted joint parent 50, steel ball 501 is pushed by joint cylinder 51 steps down in chamber 503, when described groove 510 arrives steel ball 501 position, steel ball 501 falls into groove 510, unclamp cutting ferrule 504, described chamber 503 of stepping down departs from the inwall being embedded with steel ball 501, and described joint cylinder 51 is just clamped on joint parent 50 and has suffered.

When extracting joint cylinder 51, push cutting ferrule 504 open, spring 502 in container cavity is subject to dividing plate extruding, described chamber 503 of stepping down is communicated with the inwall being embedded with steel ball 501, when described joint cylinder 51 is extracted joint parent 50, steel ball 501 to be pushed in chamber 503 of stepping down by joint cylinder 51 and departs from described groove 510, when joint cylinder 51 is extracted completely, unclamp cutting ferrule 504, described chamber 503 of stepping down departs from the inwall being embedded with steel ball 501, steel ball 501 embeds joint parent 50 inwall again, the plug-in design of rapid-acting coupling 5 conveniently realizes being communicated with or disconnection between sealing adaptor 1 with fixture splice 2.

In the present embodiment, also comprise cross-over valve 6, described cross-over valve 6 is provided with the first valve port 61, second valve port 62, described first valve port 61 is communicated with described connecting leg 3 second end, described second valve port 62 is communicated with described sampling injector 4, and the setting of cross-over valve 6 makes the sealing between connecting leg 3 and sampling injector 4 better.

In the present embodiment, also comprise drain line 7, described cross-over valve 6 also comprises the 3rd valve port 63, and described drain line 7 is communicated with described 3rd valve port 63, and the waste oil that drain line 7 can realize discharging reclaims, and does not pollute the environment.

As shown in Figure 7,8, in the present embodiment, described cross-over valve 6 also comprises adjuster bar 60, described adjuster bar 60 is for regulating the first valve port 61 to be communicated with the second valve port 62 or the first valve port 61 is communicated with the 3rd valve port 63, during sampling, adjuster bar 60 position as shown in Figure 7, first valve port 61 is communicated with i.e. connecting leg 3 and is communicated with sampling injector 4 with the second valve port 62, when draining the oil, adjuster bar 60 position as shown in Figure 8, first valve port 61 is communicated with i.e. connecting leg 3 and is communicated with drain line 7 with the 3rd valve port 63, adjuster bar 60 easily realizes the adjustment to Full-sealed sampling device state.

Embodiment two

As shown in Figure 2,4, embodiment two and embodiment one unlike, described sealing adaptor 1 first end outer wall is provided with external thread, limiting section is provided with in the middle part of sealing adaptor 1 outer wall, prevent sealing adaptor 1 from screwing in excessively, the external thread of described sealing adaptor 1 first end is threaded with the internal thread of equipment sample tap, and described limiting section is adjacent to equipment sample tap.

Described sealing adaptor 1 is provided with O-ring seal 10 with the connection of thread of equipment sample tap, and O-ring seal 10 ensures good sealing.

The above embodiment only have expressed embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.

Claims (10)

1. a Full-sealed sampling device, is characterized in that:
Comprise sealing adaptor, fixture splice, connecting leg, sampling injector;
Described sealing adaptor first end is threaded with equipment sample tap, and the second end is threaded with fixture splice;
Described fixture splice comprises stationary pipes, lining;
Described stationary pipes first end is communicated with sealing adaptor second end, described stationary pipes second end is connected with bush threads, described lining offers cavity, described cavity bottom is provided with tapered sleeve, described stationary pipes second end, tapered sleeve, lining are respectively equipped with the first fixed orifice matched with described connecting leg, the second fixed orifice, the 3rd fixed orifice;
Described first fixed orifice, the second fixed orifice, the 3rd fixed orifice are communicated with formation connecting leg mounting hole, described connecting leg is arranged in described connecting leg mounting hole, described connecting leg first end is communicated with described stationary pipes by connecting leg mounting hole, and described connecting leg second end is communicated with described sampling injector.
2. Full-sealed sampling device according to claim 1, is characterized in that:
Described sealing adaptor comprises gets oil head, lock sleeve, intervalve;
Described oil head first end of getting is threaded by the external thread of internal thread with equipment sample tap, described in get oil head second end and be provided with mounting hole and its outer wall is provided with external thread;
Described intervalve first end is provided with top, is provided with protuberance in the middle part of intervalve outer wall, and intervalve inserts the valve port that in described mounting hole and described top holds out against equipment sample tap, gets the second end of oil head described in described protuberance is adjacent to;
Described lock sleeve is provided with internal thread, and lock sleeve one end is provided with compressed part, and described lock sleeve is enclosed within outside described intervalve, is coordinated, make described compressed part compress described protuberance by the internal thread of described lock sleeve with the described external thread getting oil head second end.
3. Full-sealed sampling device according to claim 2, is characterized in that, described in get oil head and equipment sample tap connection of thread be provided with O-ring seal.
4. Full-sealed sampling device according to claim 1, it is characterized in that, described sealing adaptor first end outer wall is provided with external thread, limiting section is provided with in the middle part of sealing adaptor outer wall, the external thread of described sealing adaptor first end is threaded with the internal thread of equipment sample tap, and described limiting section is adjacent to equipment sample tap.
5. Full-sealed sampling device according to claim 4, is characterized in that, the connection of thread of described sealing adaptor and equipment sample tap is provided with O-ring seal.
6. the Full-sealed sampling device according to any one of claim 1-5, is characterized in that, also comprises rapid-acting coupling, and described rapid-acting coupling one end is communicated with sealing adaptor, and the other end is communicated with stationary pipes.
7. Full-sealed sampling device according to claim 6, is characterized in that:
Described rapid-acting coupling comprises joint parent, joint cylinder;
Joint parent outer wall is provided with First terrace, second step face, cutting ferrule, described cutting ferrule to be set on First terrace and to form container cavity with second step face, spring is provided with in described container cavity, described cutting ferrule inwall is provided with dividing plate, described dividing plate is separated out chamber of stepping down in container cavity, joint parent is provided with through hole, and through-hole wall is embedded with at least two steel balls, steps down in chamber described at least two described steel balls can embed;
Connector post surface is provided with at least two grooves, and described joint cylinder inserts joint parent, and the steel ball on joint parent snaps in groove corresponding to connector post surface.
8. Full-sealed sampling device according to claim 7, it is characterized in that, also comprise cross-over valve, described cross-over valve is provided with the first valve port, the second valve port, described first valve port is communicated with described connecting leg second end, and described second valve port is communicated with described sampling injector.
9. Full-sealed sampling device according to claim 8, is characterized in that, also comprises drain line, and described cross-over valve also comprises the 3rd valve port, and described drain line is communicated with described 3rd valve port.
10. Full-sealed sampling device according to claim 9, is characterized in that, described cross-over valve also comprises adjuster bar, and described adjuster bar is for regulating the first valve port to be communicated with the second valve port or the first valve port is communicated with the 3rd valve port.
CN201420500728.6U 2014-09-01 2014-09-01 Full-sealed sampling device CN204154536U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420500728.6U CN204154536U (en) 2014-09-01 2014-09-01 Full-sealed sampling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420500728.6U CN204154536U (en) 2014-09-01 2014-09-01 Full-sealed sampling device

Publications (1)

Publication Number Publication Date
CN204154536U true CN204154536U (en) 2015-02-11

Family

ID=52512640

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420500728.6U CN204154536U (en) 2014-09-01 2014-09-01 Full-sealed sampling device

Country Status (1)

Country Link
CN (1) CN204154536U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105241690A (en) * 2015-11-29 2016-01-13 龚柱 Boiler capable of achieving quick sampling
CN105241689A (en) * 2015-11-29 2016-01-13 龚柱 Boiler capable of achieving quick sampling
CN105258977A (en) * 2015-11-29 2016-01-20 龚柱 Fast sampling device
CN105277388A (en) * 2015-11-29 2016-01-27 龚柱 Boiler capable of rapidly sampling

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105241690A (en) * 2015-11-29 2016-01-13 龚柱 Boiler capable of achieving quick sampling
CN105241689A (en) * 2015-11-29 2016-01-13 龚柱 Boiler capable of achieving quick sampling
CN105258977A (en) * 2015-11-29 2016-01-20 龚柱 Fast sampling device
CN105277388A (en) * 2015-11-29 2016-01-27 龚柱 Boiler capable of rapidly sampling

Similar Documents

Publication Publication Date Title
CN103065538B (en) Indoor drilling accident and well control technology simulation test device
CN102374938B (en) Apparatus and method for groundwater sampling using hydraulic couplers
CN103244112A (en) Method and device for testing flow conductivity of fracture network of shale
CN202485941U (en) Negative pressure liquid sampling device
CN203949905U (en) The gas adsorption of coal and pyrophorisity temperature programme integrated experimental device
CN104316272A (en) Low-temperature valve airtightness test device
CN207163755U (en) Layered water sample sampling device
CN203981447U (en) A kind of transformer insulation oil sampler
CN204373902U (en) A kind of packer performance pick-up unit
CN103615289A (en) Mine gas bundle pipeline monitoring system
CN102749247B (en) Hydrostatic pressure test connector
CN103994863A (en) Air-tight sealing detection method of threaded connection of oil casing tubes
CN202229942U (en) Vacuum oil collecting device of transformer
CN204941496U (en) A kind of direct-reacting digital intelligence layered water injection process pipe column
CN203301898U (en) Waterproof connector
CN101598639B (en) Electrification oil sample acquisition device for oil-immersed sleeve pipe of transformer
CN203287257U (en) Test detection tool for rubber barrel of compression packer
CN204154454U (en) A kind of Subzero valve tightness test device
CN204214682U (en) Used in nuclear power station resin sampler
CN200943480Y (en) Compound injection device
CN102230853A (en) Pull-down device for live-line sampling of mutual inductor and connecting device of sample tap
CN101022213A (en) Intelligent monitoring ultrahigh voltage cable fittings
CN202442904U (en) Portable vacuum sampling device
CN201924870U (en) Hydraulic setting tool
CN203715257U (en) Down-draught down-filling type vacuum brake fluid filling machine

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant