CN221103172U - Single bar foreign matter detection blowing device of steam turbine generator - Google Patents
Single bar foreign matter detection blowing device of steam turbine generator Download PDFInfo
- Publication number
- CN221103172U CN221103172U CN202322920891.XU CN202322920891U CN221103172U CN 221103172 U CN221103172 U CN 221103172U CN 202322920891 U CN202322920891 U CN 202322920891U CN 221103172 U CN221103172 U CN 221103172U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- purging
- steam turbine
- quick
- turbine generator
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 238000007664 blowing Methods 0.000 title claims description 4
- 238000010926 purge Methods 0.000 claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model discloses a single-bar foreign matter detection purging device of a steam turbine generator, which comprises a water flow test mechanism, a purging mechanism and a collecting mechanism; the water flow test mechanism comprises a water conveying pipeline, the second end of the water conveying pipeline is connected with the first end of a single wire rod of the steam turbine generator, and a filter, a control valve, a water source pressure sensor, a pressure gauge, a mass flowmeter and a float flowmeter are sequentially arranged on the water conveying pipeline from the first end to the second end of the water conveying pipeline; the purging mechanism comprises a purging pipeline, the second end of the purging pipeline is connected with the first end of a single bar of the steam turbine generator, and a filtering pressure reducing valve and an air source pressure sensor are arranged on the purging pipeline; the collection mechanism includes a discharge conduit and a collection tank. The foreign matter detection and purging device for the single wire rod of the steam turbine generator can not only realize the water flow test of the single wire rod of the steam turbine generator, but also realize the pressure holding and purging of the foreign matter in the single wire rod of the steam turbine generator, and has high practicability.
Description
Technical Field
The utility model relates to the technical field of nuclear power, in particular to a single-bar foreign matter detection purging device of a steam turbine generator.
Background
The single bar of the steam turbine generator is an important component of the generator, and is generally cooled in water, so that the problem of blockage easily occurs in operation, flow is reduced, temperature is increased, the steam turbine generator is forced to stop, and economic loss is caused. Therefore, it is necessary to check whether the stator bar is clogged during or after the maintenance and before the grid connection.
Disclosure of utility model
The utility model aims to solve the technical problem of providing a single-bar foreign matter detection purging device of a steam turbine generator.
The technical scheme adopted for solving the technical problems is as follows: constructing a single bar foreign matter detection purging device of a steam turbine generator, wherein the single bar foreign matter detection purging device comprises a water flow test mechanism, a purging mechanism and a collecting mechanism;
The water flow test mechanism comprises a water conveying pipeline, wherein the first end of the water conveying pipeline is connected with a water source, the second end of the water conveying pipeline is connected with the first end of a single wire rod of the steam turbine generator, and a filter, a control valve, a water source pressure sensor, a pressure gauge, a mass flowmeter and a float flowmeter are sequentially arranged at the water conveying pipeline from the first end to the second end of the water conveying pipeline;
The purging mechanism comprises a purging pipeline, a first end of the purging pipeline is connected with an air source, a second end of the purging pipeline is connected with a first end of a single wire rod of the steam turbine generator, and a filtering pressure reducing valve and an air source pressure sensor are arranged on the purging pipeline;
The collecting mechanism comprises a discharge pipeline and a collecting box, wherein a first end of the discharge pipeline is connected with a second end of a single bar of the steam turbine generator, and a second end of the discharge pipeline is connected with the collecting box.
In some embodiments, the water flow test mechanism further comprises an overflow conduit;
The first end of the overflow pipeline is connected to a section of the water conveying pipeline between the water source pressure sensor and the mass flowmeter, and the second end of the overflow pipeline is connected to the collecting box;
and an overrun overflow valve is arranged on the overflow pipeline.
In some embodiments, the single-wire-rod foreign matter detection purging device of the steam turbine generator further comprises a pressure-holding purging mechanism;
The pressure-holding purging mechanism comprises a vacuum air source pipeline, a first end of the vacuum air source pipeline is connected with a vacuum air source, and a second end of the vacuum air source pipeline is connected with a first end of a single wire rod of the steam turbine generator;
and a vacuum pressure sensor is arranged on the vacuum air source pipeline.
In some embodiments, a first end of the water conduit is provided with a first quick interface;
a first end of the purging pipeline is provided with a second quick interface;
The first end of the vacuum air source pipeline is provided with a third quick connector.
In some embodiments, the second end of the water conduit is provided with a first one-way valve and the second end of the purge conduit is provided with a second one-way valve.
In some embodiments, the second end of the water conduit and the second end of the purge conduit are connected together by a connecting conduit;
the connecting pipeline is connected with a branch pipeline, and the branch pipeline is provided with a fourth quick interface.
In some embodiments, the second end of the vacuum gas source conduit is provided with a fifth quick connector.
In some embodiments, the single-wire rod foreign matter detection purging device of the steam turbine generator further comprises a first quick connection pipeline, wherein the two ends of the first quick connection pipeline are respectively provided with a sixth quick interface and a seventh quick interface; the sixth fast interface is connected with the fourth fast interface, and the seventh fast interface is connected with the fifth fast interface;
the middle part of the first quick connecting pipeline is connected with the first end of a single wire rod of the steam turbine generator.
In some embodiments, the single-wire-rod foreign matter detection purge device of the turbo generator further comprises a second quick connection pipe, wherein a first end of the second quick connection pipe is connected with a second end of the single wire rod of the turbo generator;
An eighth quick interface is arranged at the second end of the second quick connecting pipeline;
the first end of the discharge pipe is provided with a ninth quick connector which is matched with the eighth quick connector.
In some embodiments, a drain valve is provided on the collection tank.
The implementation of the utility model has the following beneficial effects: the foreign matter detection and purging device for the single wire rod of the steam turbine generator can not only realize the water flow test of the single wire rod of the steam turbine generator, but also realize the pressure holding and purging of the foreign matter in the single wire rod of the steam turbine generator, and has high practicability.
Drawings
In order to more clearly illustrate the technical solution of the present utility model, the following description will be given with reference to the accompanying drawings and examples, it being understood that the following drawings only illustrate some examples of the present utility model and should not be construed as limiting the scope, and that other related drawings can be obtained from these drawings by those skilled in the art without the inventive effort. In the accompanying drawings:
FIG. 1 is a schematic diagram of a single bar foreign matter detection purge device for a steam turbine generator according to some embodiments of the present utility model;
FIG. 2 is a perspective view of a single bar foreign matter detection purge device for a steam turbine generator in accordance with some embodiments of the present utility model.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model, and do not indicate that the apparatus or element to be referred to must have specific directions, and thus should not be construed as limiting the present utility model.
It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or one or more intervening elements may also be present. The terms "first," "second," "third," and the like are used merely for convenience in describing the present utility model and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," etc. may explicitly or implicitly include one or more such features. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present utility model. It will be apparent, however, to one skilled in the art that the present utility model may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present utility model with unnecessary detail.
Referring to fig. 1 to 2, the present utility model shows a single-bar foreign matter detection purge device for a steam turbine generator, which includes a water flow test mechanism 10, a purge mechanism 20 and a collection mechanism 30.
The water flow test mechanism 10 comprises a water conveying pipeline 11, wherein the first end of the water conveying pipeline 11 is connected with a water source, the second end of the water conveying pipeline 11 is connected with the first end of a single wire rod 100 of the steam turbine generator, and the water conveying pipeline 11 is sequentially provided with a filter 12, a control valve 13, a water source pressure sensor 14, a pressure gauge 15, a mass flowmeter 16 and a float flowmeter 17 from the first end to the second end of the water conveying pipeline 11. Preferably, the filter 12 may be a Y-type filter and the control valve 13 may be an electrically operated ball valve. The mass flowmeter 16 and the float flowmeter 17 can acquire flow parameters of water flow, and can judge whether the single wire rod 100 of the steam turbine generator is blocked or not according to the flow parameters of the water flow.
The purging mechanism 20 comprises a purging pipeline 21, a first end of the purging pipeline 21 is connected with an air source, a second end of the purging pipeline 21 is connected with a first end of a single wire rod 100 of the steam turbine generator, a filtering pressure reducing valve 22 and an air source pressure sensor 23 are arranged on the purging pipeline 21, and the purging mechanism 20 can purge the single wire rod 100 of the steam turbine generator to discharge impurity and foreign matters.
The collecting mechanism 30 includes a discharge pipe 31 and a collecting box 32, a first end of the discharge pipe 31 is connected to a second end of the single bar 100 of the turbo generator, and a second end of the discharge pipe 31 is connected to the collecting box 32.
In some embodiments, the water flow test mechanism 10 further includes an overflow conduit 18, a first end of the overflow conduit 18 being connected to a section of the water conduit 11 between the water source pressure sensor 14 and the mass flow meter 16, and a second end of the overflow conduit 18 being connected to the collection tank 32. Further, the overflow pipe 18 is provided with an overrun overflow valve 19. Preferably, the overflow pipe 18 may be provided with a valve 181 at a section between the overrun overflow valve 19 and the collecting tank 32.
In some embodiments, the single-wire-rod foreign matter detection and purging device of the turbo generator further comprises a pressure-holding purging mechanism 40; the pressure-building purging mechanism 40 comprises a vacuum air source pipeline 41, wherein a first end of the vacuum air source pipeline 41 is connected with a vacuum air source, and a second end of the vacuum air source pipeline 41 is connected with a first end of a single bar 100 of the steam turbine generator; the vacuum air source pipeline 41 is provided with a vacuum pressure sensor 42. The pressure-holding and purging mechanism 40 can perform pressure-holding and purging on the single coil rod 100 of the steam turbine generator to discharge the foreign matters.
In some embodiments, the first end of the water conduit 11 is provided with a first quick connector 111 to facilitate quick connection to a conduit of a water source. Preferably, the water pipe 11 may be provided with a pressure reducing valve 113 at a section between the first quick connector 111 and the filter 12.
In some embodiments, the first end of the purge conduit 21 is provided with a second quick interface 211 to facilitate quick connection to a conduit of the gas source. Preferably, the section of the purge conduit 21 between the second quick connector 211 and the filter pressure reducing valve 22 may be provided with a first ball valve 213.
In some embodiments, a third quick connector 411 is provided at a first end of the vacuum source conduit 41 to facilitate a quick connection to the conduit of the vacuum source. Preferably, the section of the vacuum gas source pipe 41 between the third quick connector 411 and the vacuum pressure sensor 42 may be provided with a second ball valve 413.
The pipe diameter specifications of the first quick connector 111, the second quick connector 211 and the third quick connector 411 may be DN25.
In some embodiments, the second end of the water pipe 11 is provided with a first check valve 112 to prevent the reverse flow of water.
The second end of the purge conduit 21 is provided with a second one-way valve 212 to prevent reverse flow of the gas.
In some embodiments, the second end of the water conduit 11 is connected to the second end of the purge conduit 21 by a connecting conduit 50; the connecting duct 50 is connected to a branch duct 60, the branch duct 60 being provided with a fourth quick connector 61. A fifth quick connector 412 is provided at a second end of the vacuum gas source conduit 41.
Further, the single-wire-rod foreign matter detection purging device of the steam turbine generator further comprises a first quick connecting pipeline 70, wherein a sixth quick interface 71 and a seventh quick interface 72 are respectively arranged at two ends of the first quick connecting pipeline 70; the sixth quick interface 71 is connected to the fourth quick interface 61 and the seventh quick interface 72 is connected to the fifth quick interface 412; the middle part of the first quick connection pipe 70 is connected with the first end of the single bar 100 of the turbo generator, and the middle part of the first quick connection pipe 70 may be provided with a sleeve or the like, which may be sealed and sleeved with the first end of the single bar 100 of the turbo generator.
In some embodiments, the single-wire-rod foreign matter detection purge device of the turbo generator further comprises a second quick connection pipe 80, wherein a first end of the second quick connection pipe 80 is connected with a second end of the single wire rod 100 of the turbo generator, for example, the first end of the second quick connection pipe 80 may be provided with a sleeve body, and the sleeve body and the second end of the single wire rod 100 of the turbo generator are in sealing sleeve connection; the second end of the second quick connect tube 80 is provided with an eighth quick connector 81; the first end of the discharge conduit 31 is provided with a ninth quick connector 311 cooperating with the eighth quick connector 81.
The pipe diameters of the fourth quick interface 61, the fifth quick interface 412, the sixth quick interface 71, the seventh quick interface 72, the eighth quick interface 81, and the ninth quick interface 311 may be DN20.
It will be appreciated that the provision of a quick interface enables quick connection between the various pipes.
In some embodiments, a drain valve 321 is provided on the collection tank 32, the drain valve 321 being optionally a ball valve. Preferably, the collection box 32 is divided into an upper part and a lower part, wherein a phi 0.1mm mesh stainless steel partition plate is arranged in the middle, a lower space 1 x 0.8m is arranged in the lower space, and a drain valve 321 is arranged in the lower space. The head space 1 x 0.5m is connected to the second end of the discharge line 31 and to the second end of the overflow line 18.
In some embodiments, the single-bar foreign matter detection purging device of the steam turbine generator can comprise a box body, and a movable universal wheel is arranged at the lower part of the box body, so that the device can be moved conveniently. The water flow rate test mechanism 10, the purge mechanism 20, the collection mechanism 30, the pressure-holding purge mechanism 40, and the like may be provided on the case. The first quick connector 111, the second quick connector 211, the third quick connector 411, etc. may be provided on a side plate of the case. Preferably, the box body can be provided with a plurality of lifting lugs, so that the lifting of the device is facilitated. The number of lifting lugs may be two, three, four, etc.
In some embodiments, the single-wire-rod foreign matter detection and purging device of the turbo generator may include an industrial personal computer 90 (see fig. 2), where the industrial personal computer 90 may be disposed on the box, and the industrial personal computer 90 may be connected to the control valve 13, the water source pressure sensor 14, the pressure gauge 15, the mass flowmeter 16, the float flowmeter 17, the overrun overflow valve 19, the filtering pressure-reducing valve 22, the air source pressure sensor 23, the vacuum pressure sensor 42, etc. to obtain relevant parameters and control the working state of the components.
In some embodiments, the single-bar foreign matter detection and purge device of the turbo generator may include an early warning device, which may be connected to the industrial personal computer 90, and may be used for warning when the pressure gauge 15, the air source pressure sensor 23 and the vacuum pressure sensor 42 detect the overpressure of the pipeline pressure, where the early warning device may include, but is not limited to, an acousto-optic early warning device.
It can be understood that this single stick foreign matter of turbo generator detects sweeps device can realize the single stick discharge test of turbo generator, can realize the pressure holding of the inside foreign matter of single stick of turbo generator again and sweep, and the practicality is high.
It is to be understood that the above examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the utility model; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. The device for detecting and blowing the single wire rod foreign matters of the steam turbine generator is characterized by comprising a water flow test mechanism (10), a blowing mechanism (20) and a collecting mechanism (30);
The water flow test mechanism (10) comprises a water conveying pipeline (11), wherein the first end of the water conveying pipeline (11) is connected with a water source, the second end of the water conveying pipeline (11) is connected with the first end of a single bar (100) of the steam turbine generator, and the water conveying pipeline (11) is sequentially provided with a filter (12), a control valve (13), a water source pressure sensor (14), a pressure gauge (15), a mass flowmeter (16) and a float flowmeter (17) from the first end to the second end of the water conveying pipeline;
The purging mechanism (20) comprises a purging pipeline (21), a first end of the purging pipeline (21) is connected with an air source, a second end of the purging pipeline (21) is connected with a first end of a single bar (100) of the steam turbine generator, and a filtering pressure reducing valve (22) and an air source pressure sensor (23) are arranged on the purging pipeline (21);
The collecting mechanism (30) comprises a discharge pipeline (31) and a collecting box (32), wherein a first end of the discharge pipeline (31) is connected with a second end of a single wire rod (100) of the steam turbine generator, and a second end of the discharge pipeline (31) is connected with the collecting box (32).
2. The single bar foreign matter detection purge device of a steam turbine generator of claim 1, wherein the water flow test mechanism (10) further comprises an overflow pipe (18);
The first end of the overflow pipeline (18) is connected to a section of the water conveying pipeline (11) between the water source pressure sensor (14) and the mass flowmeter (16), and the second end of the overflow pipeline (18) is connected to the collecting box (32);
an overrun overflow valve (19) is arranged on the overflow pipeline (18).
3. The single-bar foreign matter detection purge device of a turbo generator according to claim 2, further comprising a pressure hold purge mechanism (40);
The pressure-holding purging mechanism (40) comprises a vacuum air source pipeline (41), a first end of the vacuum air source pipeline (41) is connected with a vacuum air source, and a second end of the vacuum air source pipeline (41) is connected with a first end of a single wire rod (100) of the steam turbine generator;
The vacuum air source pipeline (41) is provided with a vacuum pressure sensor (42).
4. A single bar foreign matter detection purge device for a steam turbine generator according to claim 3, characterized in that a first end of the water pipe (11) is provided with a first quick interface (111);
a first end of the purging pipeline (21) is provided with a second quick connector (211);
The first end of the vacuum air source pipeline (41) is provided with a third quick connector (411).
5. The single-wire rod foreign matter detection purging device for a steam turbine generator according to claim 4, wherein a first one-way valve (112) is arranged at the second end of the water conveying pipeline (11), and a second one-way valve (212) is arranged at the second end of the purging pipeline (21).
6. The single bar foreign matter detection purge device of a turbo generator according to claim 5, characterized in that the second end of the water pipe (11) and the second end of the purge pipe (21) are connected together by a connecting pipe (50);
The connecting pipeline (50) is connected with a branch pipeline (60), and the branch pipeline (60) is provided with a fourth quick connector (61).
7. The single bar foreign object detection purge device of a turbo generator according to claim 6, wherein a fifth quick interface (412) is provided at the second end of the vacuum air source conduit (41).
8. The single-wire-rod foreign matter detection and purging device of a turbo generator according to claim 7, further comprising a first quick connection pipe (70), wherein both ends of the first quick connection pipe (70) are respectively provided with a sixth quick interface (71) and a seventh quick interface (72); the sixth quick interface (71) is connected with the fourth quick interface (61), and the seventh quick interface (72) is connected with the fifth quick interface (412);
The middle part of the first quick connecting pipeline (70) is connected with the first end of the single wire rod (100) of the steam turbine generator.
9. The single bar foreign matter detection purge apparatus of a turbo generator of claim 8, further comprising a second quick connect conduit (80), a first end of the second quick connect conduit (80) being connected to a second end of the single bar (100) of the turbo generator;
an eighth quick interface (81) is arranged at the second end of the second quick connecting pipeline (80);
The first end of the discharge duct (31) is provided with a ninth quick interface (311) cooperating with the eighth quick interface (81).
10. The single bar foreign matter detection purge device of a turbo generator according to claim 1, wherein a drain valve (321) is provided on the collection tank (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322920891.XU CN221103172U (en) | 2023-10-30 | 2023-10-30 | Single bar foreign matter detection blowing device of steam turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322920891.XU CN221103172U (en) | 2023-10-30 | 2023-10-30 | Single bar foreign matter detection blowing device of steam turbine generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221103172U true CN221103172U (en) | 2024-06-07 |
Family
ID=91310338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322920891.XU Active CN221103172U (en) | 2023-10-30 | 2023-10-30 | Single bar foreign matter detection blowing device of steam turbine generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221103172U (en) |
-
2023
- 2023-10-30 CN CN202322920891.XU patent/CN221103172U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202305154U (en) | Leakage detection device for heat transfer tube of heat exchanger | |
| CN205300835U (en) | Flow flow resistance coefficient detection device of valve | |
| CN207081470U (en) | A kind of sonic nozzle calibrating installation | |
| CN221103172U (en) | Single bar foreign matter detection blowing device of steam turbine generator | |
| CN108663499B (en) | Combined pipe type high-pressure seepage leaching test device | |
| CN209356140U (en) | A kind of fluid connector sealing leak testing stand | |
| CN105486359A (en) | Flow velocity and pressure integral measuring instrument using Pitot tube method | |
| CN109459097B (en) | Matrix distributed flow measuring device for online descaling and cold-hot state comparison | |
| CN209117139U (en) | Water flow standard apparatus | |
| CN208043184U (en) | Transformer oil level detection device and transformer | |
| CN215643013U (en) | Temperature-sensing smoke-sensing type detection device for fire detection | |
| CN105675288A (en) | Inlet/exhaust valve performance test device | |
| CN202329966U (en) | Air tightness detection table for filter | |
| CN213066682U (en) | Resistance on-line monitoring system for seawater direct cooling circulating water system | |
| CN108593196A (en) | A kind of anti-blocking device for pressure measurement suitable for wet flue gas pressure measurement | |
| CN209356187U (en) | A kind of fluid connector pressure drop testing stand | |
| CN204855114U (en) | Air flue scale deposit of turbine air compressor intercooler and jam detection device | |
| CN209495811U (en) | A kind of underwater leakage detection equipment of pipe fitting for testing flow-limiting valve performance state | |
| CN209318735U (en) | A kind of casting mould wind water cooling pressure-testing bench | |
| CN216669224U (en) | Device for checking blockage position of heat exchanger tube | |
| CN217541991U (en) | Novel test of reserve wind gap snare device | |
| CN214749062U (en) | Sample storage device of dissolved oxygen tester for environmental detection | |
| CN215785425U (en) | Cleaning device for spring tube pressure gauge | |
| CN211013401U (en) | Device of suppressing fast | |
| CN214767538U (en) | Portable anti-purging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |