CN217111681U - Piston type gas collecting device - Google Patents
Piston type gas collecting device Download PDFInfo
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- CN217111681U CN217111681U CN202220678488.3U CN202220678488U CN217111681U CN 217111681 U CN217111681 U CN 217111681U CN 202220678488 U CN202220678488 U CN 202220678488U CN 217111681 U CN217111681 U CN 217111681U
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Abstract
The utility model relates to a piston type gas collecting device, which comprises a gas collecting mechanism and a position indicating mechanism; the gas collecting mechanism comprises a gas collecting cylinder and a piston type sealing piece, and the piston type sealing piece is slidably arranged in the gas collecting cylinder so as to divide the inner space of the gas collecting cylinder into a gas source cavity and a gas collecting cavity which are independent of each other; the position indication mechanism includes: the buoy is of a tubular structure and is arranged on one side of the gas collecting cylinder in parallel along the axial direction; the magnetic turning plate indicator is arranged on one side of the buoy; the magnetic float is arranged in the floating barrel in a sliding mode and is connected with the piston type sealing element through a traction wire, and the magnetic float and the piston type sealing element keep a relative balance state. The utility model discloses set up the position indication mechanism who is connected with gas collection mechanism, can the on-the-spot position of piston sealing member in the gaseous collection mechanism of instruction, and then detect out the gas volume that gets into the gas collecting chamber directly perceivedly to but the remote control terminal carries out the remote display of position state.
Description
Technical Field
The utility model relates to a gas collecting device especially relates to a piston gas collecting device, belongs to gas collection and analysis field.
Background
The gas collecting device is mainly used for collecting gas and carrying out subsequent inspection or mixture component analysis, and is one of the major devices in the field of gas collection and analysis at present. For example, the natural gas can be collected by using a gas collecting device, the components of the natural gas can be analyzed, and in the whole gas collecting process, the gas inlet rate of the gas needs to be controlled, the stability and the controllability of the gas inlet process are ensured, and the gas inlet amount of the natural gas needs to be monitored in real time.
However, the existing gas collecting device has the defects that the piston cannot be replaced, the roughness is insufficient, so that back pressure gas pollutes sample gas, the gas volume cannot be visually detected, the gas volume cannot be remotely transmitted, the jamming is easy to occur, and the like.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, it is an object of the present invention to provide a piston-type gas collecting apparatus, which employs a detachable piston-type sealing member, and the piston-type sealing member employs a triple-replaceable O-ring sealing form, and a position indicating mechanism having a position remote transmission function is provided.
In order to achieve the purpose, the utility model adopts the following technical proposal: a piston type gas collecting device comprises a gas collecting mechanism and a position indicating mechanism; the gas collecting mechanism comprises a gas collecting cylinder and a piston type sealing piece, wherein the piston type sealing piece is slidably arranged in the gas collecting cylinder so as to divide the inner space of the gas collecting cylinder into a gas source cavity and a gas collecting cavity which are independent of each other; the position indication mechanism includes: the buoy is of a tubular structure and is arranged on one side of the gas collecting cylinder in parallel along the axial direction; the magnetic turning plate indicator is arranged on one side of the buoy; the magnetic float is arranged in the floating barrel in a sliding mode and is connected with the piston type sealing element through the traction wire, and the magnetic float and the piston type sealing element keep a relative balance state.
The piston type gas collecting device preferably comprises a cylinder body, an upper cylinder cover and a lower cylinder cover, wherein two ends of the cylinder body are open, the upper cylinder cover is connected to the upper end of the cylinder body in a threaded sealing manner, and a back pressure gas source interface for connecting a back pressure gas source is arranged on the upper cylinder cover; the lower cylinder cover is connected with the lower end of the cylinder body through a plurality of bolts in a sealing mode, and a gas collecting interface used for connecting gas to be collected is arranged on the lower cylinder cover.
The piston type gas collecting device is characterized in that the cross section of the piston type sealing element is U-shaped, and a first O-shaped sealing ring, a second O-shaped sealing ring and a third O-shaped sealing ring which are replaceable are sequentially arranged on the peripheral wall of the piston type sealing element, which is in contact with the cylinder body, at intervals.
In the piston type gas collecting device, the material of the gas collecting cylinder and the material of the piston type sealing element are preferably stainless steel.
The piston type gas collecting device is characterized in that preferably, the roughness of the inner surface of the cylinder body is 0.8 um.
The piston type gas collecting device is characterized in that preferably, the magnetic turning plate indicator can output 4-20 mA HART signals and is connected to a remote control terminal to remotely display the position state.
The utility model discloses owing to take above technical scheme, it has following advantage:
1. the utility model discloses set up the position indication mechanism who is connected with gas collection mechanism, can the on-the-spot position of piston sealing member in the gaseous collection mechanism of instruction, and then detect out the gas volume that gets into the gas collecting chamber directly perceivedly to but the remote control terminal carries out the remote display of position state.
2. The utility model discloses a detachable piston sealing member, and piston sealing member adopt the sealed form of triple removable O type circle.
3. The utility model discloses the inside roughness of well cylinder body is 0.8um to reduce the friction between cylinder body and the piston sealing member, avoid appearing the bite and then lead to gaseous pollution to take place.
Drawings
Fig. 1 is a schematic structural diagram of a piston-type gas collecting device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the system or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "assembled", "disposed" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a piston type gas collecting device, which comprises a gas collecting mechanism and a position indicating mechanism; the gas collecting mechanism comprises a gas collecting cylinder and a piston type sealing piece, and the piston type sealing piece is slidably arranged in the gas collecting cylinder so as to divide the inner space of the gas collecting cylinder into a gas source cavity and a gas collecting cavity which are independent of each other; the position indication mechanism includes: the buoy is of a tubular structure and is arranged on one side of the gas collecting cylinder in parallel along the axial direction; the magnetic turning plate indicator is arranged on one side of the buoy; the magnetic float is arranged in the floating barrel in a sliding mode and is connected with the piston type sealing element through a traction wire, and the magnetic float and the piston type sealing element keep a relative balance state. The utility model discloses set up the position indication mechanism who is connected with gas collection mechanism, can the on-the-spot position of piston sealing member in the gaseous collection mechanism of instruction, and then detect out the gas volume that gets into the gas collecting chamber directly perceivedly to but the remote control terminal carries out the remote display of position state.
The following describes in detail a piston-type gas collecting apparatus according to an embodiment of the present invention with reference to the accompanying drawings.
As shown in FIG. 1, the present invention provides a piston-type gas collecting device, which comprises a gas collecting mechanism and a position indicating mechanism. Wherein the gas collecting mechanism comprises a gas collecting cylinder 11 and a piston type sealing member 12, the piston type sealing member 12 is slidably arranged in the gas collecting cylinder 11 to divide the inner space of the gas collecting cylinder 11 into a gas source cavity 13 and a gas collecting cavity 14 which are independent of each other. The position indication mechanism comprises a buoy 21, a magnetic turning plate indicator 22 and a magnetic float 23, wherein the buoy 21 is of a tubular structure and is axially arranged on one side of the gas collection cylinder 11 in parallel, and the magnetic turning plate indicator 22 is arranged on one side of the buoy 21. The magnetic float 23 is slidably disposed in the float 21, the magnetic float 23 is connected to the piston seal 12 through a pull wire 24, and the magnetic float 23 and the piston seal 12 maintain a relatively balanced state.
In the above embodiment, preferably, the gas collecting cylinder 11 includes a cylinder body 111, an upper cylinder cover 112 and a lower cylinder cover 113, two ends of the cylinder body 111 are open, the upper cylinder cover 112 is connected to the upper end of the cylinder body 111 in a threaded sealing manner, and a back pressure gas source interface 114 for connecting a back pressure gas source is arranged on the upper cylinder cover 112; the lower cylinder cover 113 is hermetically connected to the lower end of the cylinder body 111 through a plurality of bolts, and a gas collecting port 115 for connecting gas to be collected is provided on the lower cylinder cover 113.
In the above embodiment, preferably, the cross section of the piston-type sealing member 12 is U-shaped, and the first "O" shaped sealing ring 121, the second "O" shaped sealing ring 122 and the third "O" shaped sealing ring 123 which are replaceable are sequentially arranged on the outer peripheral wall of the piston-type sealing member 12 contacting the cylinder 111 at intervals, and the process of replacing the sealing rings is as follows: firstly, the position of the piston type sealing element 12 clinging to the lower cylinder cover 113 is controlled by adjusting a backpressure air source; then, the bolts on the lower cylinder cover 113 are opened, the lower cylinder cover 113 is removed, the piston type sealing element 12 is taken out, and the first O-shaped sealing ring 121, the second O-shaped sealing ring 122 and the third O-shaped sealing ring 123 are replaced; finally, the piston seal 12 is replaced inside the cylinder 111, the lower head 113 is mounted, and the bolts are tightened to re-tighten the lower head 113 to the cylinder 111.
In the above embodiment, the gas collection cylinder 11 and the piston seal 12 are preferably made of stainless steel, and for some corrosive gases, an internal sulfur passivation process may be used.
In the above embodiment, preferably, the roughness of the inner surface of the cylinder 111 is 0.8um, so as to reduce the friction between the cylinder 11 and the piston seal 12, and avoid the occurrence of jamming and thus gas pollution.
In the above embodiment, preferably, the magnetic flap indicator 22 can output 4-20 mA HART signals and can be connected to a remote control terminal for remote display of the position status.
The utility model provides a piston gas collection device is when using, its use as follows: firstly, connecting a backpressure gas source interface 114 with a backpressure gas source, and connecting a gas collection interface 115 with gas to be collected; then, the pressure of a backpressure air source is adjusted in real time, so that the gas to be collected can enter the gas collecting cavity 14 at a stable flow, the position of the piston type sealing element 12 changes along with the increase of the volume of the gas to be collected, the magnetic suspension 23 is driven by the traction wire 24 to move up and down, the magnetic suspension 23 changes the indicating state of the magnetic turning plate indicator 22 at the corresponding position through magnetic force, the on-site position indication is formed, and the volume of the gas entering the gas collecting cavity 14 is detected visually.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A piston type gas collecting device is characterized by comprising a gas collecting mechanism and a position indicating mechanism;
wherein the gas collecting mechanism comprises a gas collecting cylinder (11) and a piston type sealing member (12), the piston type sealing member (12) is slidably arranged in the gas collecting cylinder (11) to divide the inner space of the gas collecting cylinder (11) into a gas source cavity (13) and a gas collecting cavity (14) which are independent of each other;
the position indication mechanism includes:
the buoy (21) is of a tubular structure and is arranged on one side of the gas collecting cylinder (11) in parallel along the axial direction;
the magnetic turning plate indicator (22) is arranged on one side of the buoy (21);
the magnetic float (23) is arranged in the float bowl (21) in a sliding mode, the magnetic float (23) is connected with the piston type sealing element (12) through the traction wire (24), and the magnetic float (23) and the piston type sealing element (12) keep a relative balance state.
2. The piston type gas collecting device according to claim 1, characterized in that the gas collecting cylinder (11) comprises a cylinder body (111), an upper cylinder cover (112) and a lower cylinder cover (113), wherein the two ends of the cylinder body (111) are open, the upper cylinder cover (112) is screwed and sealed on the upper end of the cylinder body (111), and a backpressure gas source interface (114) for connecting a backpressure gas source is arranged on the upper cylinder cover (112); the lower cylinder cover (113) is connected to the lower end of the cylinder body (111) in a sealing mode through a plurality of bolts, and a gas collecting interface (115) used for connecting gas to be collected is arranged on the lower cylinder cover (113).
3. The piston type gas collection device according to claim 1, wherein the piston type sealing member (12) is U-shaped in cross section, and a first O-shaped sealing ring (121), a second O-shaped sealing ring (122) and a third O-shaped sealing ring (123) which are replaceable are arranged on the outer circumferential wall of the piston type sealing member (12) which is contacted with the cylinder body (111) at intervals in sequence.
4. Piston gas collecting device according to claim 1, characterised in that the material of the gas collecting cylinder (11) and the piston seal (12) is stainless steel.
5. Piston gas collecting device according to claim 1, characterized in that the internal surface roughness of the cylinder (111) is 0.8 um.
6. The piston type gas collecting device as recited in claim 1, characterized in that the magnetic flap indicator (22) is capable of outputting 4-20 mA HART signal and is connected to a remote control terminal for remote display of position status.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220678488.3U CN217111681U (en) | 2022-03-25 | 2022-03-25 | Piston type gas collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220678488.3U CN217111681U (en) | 2022-03-25 | 2022-03-25 | Piston type gas collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217111681U true CN217111681U (en) | 2022-08-02 |
Family
ID=82603902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220678488.3U Active CN217111681U (en) | 2022-03-25 | 2022-03-25 | Piston type gas collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217111681U (en) |
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2022
- 2022-03-25 CN CN202220678488.3U patent/CN217111681U/en active Active
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