CN107367404A - Gas sampling device - Google Patents
Gas sampling device Download PDFInfo
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- CN107367404A CN107367404A CN201710810681.1A CN201710810681A CN107367404A CN 107367404 A CN107367404 A CN 107367404A CN 201710810681 A CN201710810681 A CN 201710810681A CN 107367404 A CN107367404 A CN 107367404A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to a kind of gas sampling device, is related to sampling equipment technical field, solves the technical problem that volume present in prior art is larger, control is relatively loaded down with trivial details and higher cost.The gas sampling device of the present invention, including container, main piston, the gentle nozzle member of sub- piston, the mutual conversion between gas circuit can be realized by external valve, and use pure mechanic structure, worked when carrying out gas circuit conversion without electrical coordination, therefore control is simple and convenient to operate, and can reduce cost；Further, since the motion of external valve is within valve body, therefore the volume of valve component can be made smaller.
Description
Technical field
The present invention relates to sampling equipment technical field, a kind of particularly gas sampling device.
Background technology
In the prior art, to the sampling of natural gas, mainly using metal either rubber tube by well head or gas gathering station
Source of the gas be connected with sampling bottle, pass through Valve controlling air-flow sample introduction.Product category on the market on air way switch valve is various,
Conventional two-position three-way valve has：Magnetic valve, electrical ball valve, rotating type manual valve etc..It realizes that the method for gas circuit switching is：Electricity
Magnet valve controls switching of the valve core between public port and normally opened and normally closed port mainly by the electric current of break-make magnet coil；
Electrical ball valve is to drive spherical valve core to move by pitman shaft using stepper motor or reducing motor, make public port normally opened and
Switching reaches the purpose of gas circuit switching between normally closed；Both valve relative volumes are larger, and relatively loaded down with trivial details in control, cost is higher；
In addition rotating type manual valve must expose regulation handle in regulation, so as to influence the technological requirement of specific occasion.
The content of the invention
The present invention provides a kind of gas sampling device, and for solving, the volume of valve body present in prior art is larger, controls
The relatively loaded down with trivial details and higher cost technical problem of system.
The present invention provides a kind of gas sampling device, including container, and the container structure is cylindric for inner hollow；
The main piston being arranged in the container, the main piston is only in the presence of artificial external force along the axle of the container
To motion；
The sub- piston being arranged on the main piston, the sub- piston are used in the presence of gas pressure along the container
Axial movement, so as to will in the container be located at the main piston both ends chamber, and
Valve component on the container is set, and the valve component includes valve body, is respectively arranged with the valve body
First valve, the second valve and external valve, second valve connect with the inside of the container, first valve and institute
State gas passage of second valve with the valve inner to be connected, the external valve is configured to when it is along close to the appearance
Device direction motion in place after, the connection of first valve and second valve can be cut off, and can make its with it is described
Second valve is connected.
In an embodiment of the invention, be slidably provided with valve element in the gas passage, the valve element it is interior
Portion has hollow air flue, and the air flue is connected with the external valve；
The external valve is used to promote axial movement of the valve element along the gas passage, so that the external gas
Mouth is connected with second valve by the air flue of the valve element.
In an embodiment of the invention, the valve core upper sleeve is provided with back-moving spring；
The end set away from the valve body has boss on the valve element, and the inside of the valve body sets depressed part, described
One end of back-moving spring leans with the boss, and the other end leans with depressed part.
In an embodiment of the invention, the one end of the valve body away from the container is fixedly installed gland, institute
Gland is stated with being oriented to the external valve and auxiliary positioning；
The through hole coaxial with the gas passage is provided with the gland, the valve element is arranged in the through hole.
In an embodiment of the invention, bulge loop, the external valve are provided with the outer wall of the external valve
On be arranged with locking cap, inwall and the bulge loop of the locking cap end lean, the locking cap and the gland screw thread
Connection.
In an embodiment of the invention, the outer wall of the external valve is provided with the first sealing ring, and described first
Sealing ring is between the locking cap and the gland；
The both ends of the valve element are respectively arranged with the second sealing ring and the 3rd sealing ring, and second sealing ring is positioned at described
On boss.
In an embodiment of the invention, the sub- piston includes being located at the first end of the main piston both sides respectively
Plate and the second end plate and the connecting rod in the mounting hole of the main piston；
The first stomata is provided with the first end plate, the connecting rod is internally provided with air flue, and the connecting rod is leaned on
The second stomata is provided with the outer wall of nearly second end plate
First stomata and second stomata are connected with the air flue respectively.
In an embodiment of the invention, the both sides of the main piston are separately provided for accommodating the first end
First receiving portion of plate and the second receiving portion for accommodating second end plate；
When the first end plate is located in first receiving portion, second stomata is located at the outer of the main piston
Portion.
In an embodiment of the invention, the main piston includes piston head and is set in the outer wall of the piston head
On piston ring, multiple tracks annular groove is arranged at intervals with the outer circumference surface of the piston head, on the inner peripheral surface of the piston ring
Multiple circular ribs are provided with, each circular rib is arranged in the corresponding annular groove.
In an embodiment of the invention, the piston ring is made up of ptfe composite.
Compared with prior art, it is an advantage of the current invention that the mutual conversion between gas circuit can be realized by external valve,
And pure mechanic structure is used, worked when carrying out gas circuit conversion without electrical coordination, therefore control is simple and convenient to operate, and
Cost can be reduced；Further, since the motion of external valve is within valve body, therefore the volume of valve component can be made more
It is small.
The device by sub- piston just can main piston both sides space volume occur, supercharging is played to gas so as to reach
Or the effect of decompression, impact of the gases at high pressure to sampling bottle thus can be avoided, and gas displacement is incomplete in sampling bottle
Problem.
Brief description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.
Fig. 1 is the dimensional structure diagram of gas sampling device in embodiments of the invention；
Fig. 2 is the sectional view of the gas sampling device shown in Fig. 1；
Fig. 3 is the structural representation of the sub- piston shown in Fig. 2；
Fig. 4 is the sectional view of the sub- piston shown in Fig. 3；
Fig. 5 is the sectional view of the valve component shown in Fig. 2.
Reference：
1- containers；2- main pistons；3- pistons；
4- valve components；11- left chamber；12- right chambers room；
21- mounting holes；The receiving portions of 22- first；The receiving portions of 23- second；
24- piston heads；25- piston rings；26- piston rods；
31- first end plates；The end plates of 32- second；33- connecting rods；
41- valve bodies；The valves of 42- first；The valves of 43- second；
The external valves of 44-；45- valve elements；46- back-moving springs；
47- glands；The stomatas of 311- first；331- air flues
The stomatas of 332- second；441- bulge loops；442- locking caps；
The sealing rings of 443- first；The sealing rings of 451- second；The sealing rings of 452- the 3rd.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in figure 1, the present invention provides a kind of gas sampling device, it include container 1, main piston 2, sub- piston 3 and
Valve component 4.
Wherein, container 1 is configured to the cylindric of inner hollow；Its hollow inside is gas passage.
Main piston 2 is arranged in container 1, main piston 2 set in the container 1 and with container 1 is sealed contacts.Such as Fig. 2 institutes
Show, container 1 is divided into left chamber 11 and right chamber room 12 by main piston 2.Also, main piston 2 is only in the presence of external force along container 1
Axial movement, so as to change the volume fraction of left chamber 11 and right chamber room 12, the gas in container 1 can be played supercharging or
The effect of person's decompression.
In addition, in order to ensure that main piston 2 can not be moved and can only moved down in artificial external force effect under gas pressure
It is dynamic, the confficient of static friction between the inwall of main piston 2 and container 1 can be arranged to 0.4.
Sub- piston 3 is arranged on main piston 2, and sub- piston 3 is used to transport along the axial direction of container 1 in the presence of gas pressure
It is dynamic, so as to which the chamber at the both ends of main piston 2 will be located in container 1.
Valve component 4 is arranged on container 1, and valve component 4 is used to connect external air source, so that gas flows into container 1
In.Wherein, valve component 4 is arranged on the side of left chamber 11 of container 1, and accordingly, is set in the side for having right chamber room 12
There is the thief hatch for connecting sampling bottle, so as to be sampled by container 1.
Specifically, as shown in figure 5, valve component 4 includes valve body 41, wherein, the gas that is internally provided with of valve body 41 leads to
Road 411, and the first valve 42, the second valve 43 and external valve 44 are respectively arranged with valve body 41.
In one embodiment of the invention, the first valve 42 is arranged on the axis of valve body 41 with external valve 44,
Second valve 43 is provided on the vertical direction of axis of valve body 41.
In one embodiment of the invention, valve body 41 is integrally formed with the first valve 42 and the second valve 43.
In another embodiment of the present invention, the first valve 42 and the second valve 43 are absolute construction, and and valve
Integrative-structure is realized in corresponding air nozzle hole connection on body 41.
Certainly, the absolute construction of the second valve 43 can be also used, and the first valve 81 is and valve body 41 is integrally formed, and and valve
Corresponding air nozzle hole realizes threaded connection on body 41.
On the basis of above-described embodiment, the second valve 43 connects with the inside of container 1, the first valve 42 and the second valve
43 are connected with gas passage 411.External valve 44 can be moved along the axis direction of valve body 41, and external valve 44 is configured to
After its direction along close container 1 is moved in place, the connection of the first valve 42 and the second valve 43 can be cut off, and can make
Its (external valve 44) is connected with the second valve 43.Now, due to the path quilt between the first valve 42 and the second valve 43
Cut-out, and the path between external valve 44 and the second valve 43 is connected, therefore gas passes through second from external valve 44
Valve 43 is flowed into container 1.
The specific motion mode of external valve 43 is as follows：
Slidably be provided with valve element 45 in gas passage 411, the inside of valve element 45 has a hollow air flue, air flue with it is external
Valve 44 is connected；External valve 44 is used to promote axial movement of the valve element 45 along gas passage 411, is crossed when valve element 45 moves to
During the position of the second valve 43, you can by valve element 45 by the path blockade between the second valve 43 and the first valve 42, and lead to
Crossing the air flue of valve element 45 makes external valve 44 be connected with the second valve 43.
In addition, in order that valve element 45 can return to initial position in valve body 41, back-moving spring 46 is arranged with valve element 45,
The end set away from valve body 41 has a boss on valve element 45, and the inside of valve body 41 sets depressed part, one end of back-moving spring 46 with
Boss leans, and the other end leans with depressed part.I.e. back-moving spring 46 is fixed between the end of valve element 45 and valve body 41.
The one end of valve body 41 away from container 1 is fixedly installed gland 47, gland 47 with to external valve 44 be oriented to and
Auxiliary positioning；The through hole coaxial with gas passage 411 is provided with gland 47, valve element 45 is arranged in the through hole.
Further, bulge loop 441 is provided with the outer wall of external valve 44, locking cap 442 is arranged with external valve 44,
The inwall of the end of locking cap 442 is leant with bulge loop 441, and locking cap 442 is threadedly coupled with gland 47.
When external valve 44 by pushing tow valve element 45 along to when being moved close to the direction of valve body 1, because valve element 45 crosses the
The position of two valves 43, so that the path between the second valve 43 and the first valve 42 be blocked, and make external valve 44 with
Second valve 43 is formed logical by valve element 45；Now, the position of locking cap 442 and gland 47 is fixed, therefore, even if back-moving spring
46 pairs of valve elements 45 and external valve 44 act power and promote the two to be separated with valve body 41, but outer due to external gas mouth 44
Bulge loop 441 is provided with wall, therefore makes locking cap 442 that external valve 44 is fixed on gland 47, it is relative without producing
It is mobile.
In addition, distance is engaged with externally threaded on gland 47 by adjusting locking cap 442, so as to adjust valve element 45 and second
The limited latus rectum of the passage of valve 43, so as to realize to the first valve 42 and the second valve 43, or the second valve 43 with it is external
The gas flow that valve 44 is formed in gas circuit.
In addition, the outer wall of external valve 44 is provided with the first sealing ring 443, the first sealing ring 443 be located at locking cap 442 with
Between gland 47；The both ends of valve element 45 are respectively arranged with the second sealing ring 451 and the 3rd sealing ring 452, the second sealing ring 451
In on boss, to ensure the air-tightness between valve element 45 and valve body 41 and gland 47.
When needing to be acquired gas, external valve 44 need to be only connected with external air source, and make outside valve 44
Moved in place along the direction close to valve body 41, you can the gas in external air source is imported into container 1, its is simple in construction, body
Product is small, easy to use, and it uses pure mechanic structure to carry out the switching between gas circuit, is worked without electrical coordination, so as to ensure work
Make reliable and stable and cost can be reduced.
Be provided with end cap on first valve 42, when the first valve 42 when not in use, sealed by end cap.
In addition, the first valve 42 is alternatively arranged as relief hole and used., will be external when needing to carry out pressure release to container 1
Valve 44 pulls out from valve body 41, and removes end cap, passes the gas through the first valve 42 and is discharged.
According to the present invention, sub- piston 3 include respectively positioned at the both sides of main piston 2 the end plate 32 of first end plate 31 and second and
Connecting rod 33 in the mounting hole 21 of main piston 2；As shown in figure 3, the first stomata 311 is provided with first end plate 31, even
Extension bar 33 is internally provided with air flue 331, and connecting rod 33 is provided with the second stomata 332 on the outer wall of the second end plate 32, the
One stomata 311 and the second stomata 332 are connected with air flue 331 respectively.
As shown in figure 4, the both sides of main piston 2 be separately provided for accommodate first end plate 31 the first receiving portion 22 and
For accommodating the second receiving portion 23 of the second end plate 32；When first end plate 31 is located in the first receiving portion 22, the second stomata 332
Positioned at the outside of main piston 2.
Also, it is all provided between the receiving portion 22 of first end plate 31 and first and between the second end plate 32 and the second receiving portion 22
It is equipped with sealing ring.
The process that sub- piston 3 adjusts the volume fraction of left chamber 11 and right chamber room 12 is as follows：
For high-pressure air source, first, main piston 2 is set to move axially to the low order end of container 1 along container 1.By external valve
44 are connected with source of the gas, turn on the gas circuit between external valve 44 and the second valve 43, and gas enters the left chamber 11 of container 1
In.Now, the pressure acted on sub- piston 3 due to the gas in left chamber 11 be more than sub- piston 3 in right chamber room 12 by
Pressure, that is to say, that the pressure that the first end plate 31 of sub- piston 3 is subject to is more than the pressure that is subject to of the second end plate 32 so that
Force connecting rod 33 to move, and the second stomata 332 is exposed main piston 2, now, pass through the first stomata 311, air flue 331
And second stomata 332, left chamber 11 is connected with right chamber room 12.After then gas is by sub- piston 3, flowed out by thief hatch.Make
Gas circulates a period of time from valve component 4 to thief hatch, that is, completes the flushing of gas circuit.
After the completion of being rinsed to gas circuit, after continuing ventilation a period of time, thief hatch is closed, and close external valve 44.This
When right chamber room 12 in the pressure of gas be P1.If it is desire to obtaining the gas that pressure is P2, convert values of the P2 than P1.Make main work
Plug 2 moves to one end of valve component 4, and is moved to the position that scale is P2/P1.Because now sub- piston 3 is on a left side
Chamber 11 and the state of right chamber room 12, therefore, main piston 2 can move on the longitudinal direction of container 1 to one end of valve component 4.It is disconnected
Open the connection of valve component 4 and source of the gas.The end cap of the first valve 42 is opened, the gas in left chamber 11 is passed through the first valve 42
Distribute.Now, because the gas in left chamber 11 is to external diffusion, then the air pressure in left chamber 11 reduces, then in sub- piston 3
Both ends there is pressure differential, this pressure differential forces connecting rod 33 to move so that the second stomata 332 enter main piston 2
Mounting hole 21 in, and the second end plate 32 is located in the second receiving portion 23, to end the connection of left chamber 11 and right chamber room 12.
After treating that the gas in left chamber 11 gives out, main piston 2 is set to be moved to the left end of container 1, now, the volume of right chamber room 12 increases
Greatly, then the drop of pressure for the gas being located therein.After main piston 2 is moved to the left end of container 1, thief hatch is connected to sampling
Bottle.Now, sampling bottle can receive the gas that pressure is P2.
For low-pressure gas source, first, main piston 2 is set to move axially to the high order end of container 1 along container 1.By external valve
44 are connected with source of the gas, turn on the gas circuit between external valve 44 and the second valve 43, and gas enters the left chamber 11 of container 1
In.Now, the pressure of the first end plate 31 of sub- piston 3 is more than the pressure of the second end plate 32, moves so as to connecting rod 33, and makes the
Two stomatas 332 expose main piston 2, and left chamber 11 is connected with right chamber room 12.After gas is by sub- piston 3, by thief hatch stream
Go out, and make gas circulation a period of time, that is, complete the flushing process of gas circuit.
After the completion of being rinsed to gas circuit, after continuing ventilation a period of time, thief hatch is closed.Now in the inner chamber of container 1
The pressure of gas is P3.If it is desire to obtaining the gas that pressure is P4, convert values of the P3 than P4.Main piston 2 is set to be moved to right-hand member,
And it is moved to the position that scale is P3/P4.During mobile main piston 2, the gas in right chamber room 12 is compressed, and it is pressed
Strong rise, thus the gas pressure in the right chamber room 12 suffered by sub- piston 3 is greater than the gas pressure in the left chamber 11 being subject to
Power, in the presence of pressure differential, connecting rod 33 moves, so that the second stomata 332 enters in the mounting hole 21 of main piston 2, and
The second end plate 32 is set to be located in the second receiving portion 23, so as to end connecting for left chamber 11 and right chamber room 12.Due to right chamber room 12
Volume diminish, in gas therein be pressurized and make its pressure raise.Finally, thief hatch is connected to sampling bottle.Now, adopt
Sample bottle can receive the gas that pressure is P4.
In addition, main piston 2 includes piston head 24 and the piston ring 25 being set on the outer wall of piston head 24, piston head 24
Multiple tracks annular groove is arranged at intervals with outer circumference surface, multiple circular ribs, Mei Gehuan are provided with the inner peripheral surface of piston ring 25
Shape rib is arranged in corresponding annular groove.Make moment of inertia of the main piston 2 when living motion again small by piston ring 25, significantly
Improve the service behaviour of application apparatus.
Piston ring 25 is made up of ptfe composite, makes piston ring 25 and container 1 that inwall must be allowed to have good patch
Close performance.
In addition, acting on piston head 24 by external force for convenience, piston rod 26, piston rod can be set on piston head 24
26 one end is be hinged with piston head 24, and the other end is stretched out outside left chamber 11, and is provided between piston rod 26 and container 1 close
Seal ensures air-tightness.
Although by reference to preferred embodiment, invention has been described, is not departing from the situation of the scope of the present invention
Under, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, as long as being rushed in the absence of structure
Prominent, the every technical characteristic being previously mentioned in each embodiment can combine in any way.The invention is not limited in text
Disclosed in specific embodiment, but all technical schemes including falling within the scope of the appended claims.
Claims (10)
- A kind of 1. gas sampling device, it is characterised in that includingContainer (1), the container (1) are configured to the cylindric of inner hollow；The main piston (2) being arranged in the container (1), the main piston (2) is only in the presence of artificial external force along the appearance The axial movement of device (1)；The sub- piston (3) being arranged on the main piston (2), the sub- piston (3) are used in the presence of gas pressure along institute The axial movement of container (1) is stated, so as to which the chamber at the main piston (2) both ends will be located in the container (1), andThe valve component (4) being arranged on the container (1), the valve component (4) include valve body (41), the valve body (41) On be respectively arranged with the first valve (42), the second valve (43) and external valve (44), second valve (43) and the appearance The inside connection of device (1), the gas of first valve (42) and second valve (43) with the valve body (41) inside Passage (411) is connected, and the external valve (44) is configured to after its direction along the close container (1) is moved in place, The connection of first valve (42) and second valve (43) can be cut off, and itself and second valve (43) can be made It is connected.
- 2. gas sampling device according to claim 1, it is characterised in that slidably set in the gas passage (411) Valve element (45) is equipped with, the inside of the valve element (45) has hollow air flue, and the air flue is connected with the external valve (44)；The external valve (44) is used to promote axial movement of the valve element (45) along the gas passage (411), so that The external valve (44) is connected with second valve (43) by the air flue of the valve element (45).
- 3. gas sampling device according to claim 2, it is characterised in that be arranged with back-moving spring on the valve element (45) (46)；The end set away from the valve body (41) has boss on the valve element (45), and the inside of the valve body (41) sets depression Portion, one end of the back-moving spring (46) lean with the boss, and the other end leans with depressed part.
- 4. gas sampling device according to claim 3, it is characterised in that the valve body (41) is away from the container (1) One end be fixedly installed gland (47), the gland (47) to the external valve (44) with being oriented to and auxiliary positioning；The through hole coaxial with the gas passage (411) is provided with the gland (47), the valve element (45) is arranged on described In through hole.
- 5. gas sampling device according to claim 4, it is characterised in that set on the outer wall of the external valve (44) There is bulge loop (441), locking cap (442), the inwall of locking cap (442) end and institute are arranged with the external valve (44) State bulge loop (441) to lean, the locking cap (442) is threadedly coupled with the gland (47).
- 6. gas sampling device according to claim 5, it is characterised in that the outer wall of the external valve (44) is provided with First sealing ring (443), first sealing ring (443) is between the locking cap (442) and the gland (47)；The both ends of the valve element (45) are respectively arranged with the second sealing ring (451) and the 3rd sealing ring (452), second sealing Circle (451) is located on the boss.
- 7. gas sampling device according to claim 1, it is characterised in that the sub- piston (3) includes being located at institute respectively State the first end plate (31) and the second end plate (32) and the mounting hole (21) positioned at the main piston (2) of main piston (2) both sides In connecting rod (33)；The first stomata (311) is provided with the first end plate (31), the connecting rod (33) is internally provided with air flue (331), the connecting rod (33) is provided with the second stomata (332) on the outer wall of second end plate (32)First stomata (311) and second stomata (332) are connected with the air flue (331) respectively.
- 8. gas sampling device according to claim 7, it is characterised in that the both sides of the main piston (2) are set respectively Have and be used for the first receiving portion (22) for accommodating the first end plate (31) and second for accommodating second end plate (32) Receiving portion (23)；When the first end plate (31) is located in first receiving portion (22), second stomata (332) is located at the master The outside of piston (2).
- 9. gas sampling device according to claim 1, it is characterised in that the main piston (2) includes piston head (24) With the piston ring (25) being set on the outer wall of the piston head (24), it is arranged at intervals on the outer circumference surface of the piston head (24) There is multiple tracks annular groove, multiple circular ribs are provided with the inner peripheral surface of the piston ring (25), each circular rib is set Put in the corresponding annular groove.
- 10. gas sampling device according to claim 9, it is characterised in that the piston ring (25) is by polytetrafluoroethylene (PTFE) Composite is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710810681.1A CN107367404A (en) | 2017-09-11 | 2017-09-11 | Gas sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710810681.1A CN107367404A (en) | 2017-09-11 | 2017-09-11 | Gas sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107367404A true CN107367404A (en) | 2017-11-21 |
Family
ID=60311552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710810681.1A Pending CN107367404A (en) | 2017-09-11 | 2017-09-11 | Gas sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107367404A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672384A (en) * | 2018-07-02 | 2020-01-10 | 中国石油天然气股份有限公司 | Natural gas pressure boost sampling device |
| CN112791298A (en) * | 2020-12-16 | 2021-05-14 | 济南三康环保科技有限公司 | Push type ozone gas suction device and gas taking method thereof |
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|---|---|---|---|---|
| CN101555952A (en) * | 2008-04-08 | 2009-10-14 | 武汉市天虹仪表有限责任公司 | Air passage change-over valve |
| CN106286213A (en) * | 2015-05-20 | 2017-01-04 | 仪征威龙发动机零部件有限公司 | Piston and piston-ring packing |
| CN106353152A (en) * | 2015-07-16 | 2017-01-25 | 中国石油化工股份有限公司 | Device for sampling |
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2017
- 2017-09-11 CN CN201710810681.1A patent/CN107367404A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101555952A (en) * | 2008-04-08 | 2009-10-14 | 武汉市天虹仪表有限责任公司 | Air passage change-over valve |
| CN106286213A (en) * | 2015-05-20 | 2017-01-04 | 仪征威龙发动机零部件有限公司 | Piston and piston-ring packing |
| CN106353152A (en) * | 2015-07-16 | 2017-01-25 | 中国石油化工股份有限公司 | Device for sampling |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672384A (en) * | 2018-07-02 | 2020-01-10 | 中国石油天然气股份有限公司 | Natural gas pressure boost sampling device |
| CN110672384B (en) * | 2018-07-02 | 2022-06-03 | 中国石油天然气股份有限公司 | Natural gas pressure boost sampling device |
| CN112791298A (en) * | 2020-12-16 | 2021-05-14 | 济南三康环保科技有限公司 | Push type ozone gas suction device and gas taking method thereof |
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Application publication date: 20171121 |
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| RJ01 | Rejection of invention patent application after publication |