CN211904721U

CN211904721U - Sampling device for liquefied natural gas

Info

Publication number: CN211904721U
Application number: CN201922489179.2U
Authority: CN
Inventors: 刘昆; 董国亮; 高勤; 王晨朝; 郭建辉
Original assignee: China Natural Gas Guangyuan Co ltd
Current assignee: China Natural Gas Guangyuan Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-11-10
Anticipated expiration: 2029-12-31

Abstract

The utility model provides a sampling device of liquefied natural gas, the purpose is solved current natural gas sampling device and is lacked stronger suitability, connects insecure technical problem. This sampling device of liquefied natural gas includes sampling tube and fixed establishment, the both sides of sampling tube all are provided with drive mechanism, and two drive mechanism respectively with fixed establishment's both ends fixed connection, fixed establishment includes first fastener, second fastener and two fastening bolt, two fastening bolt are located the both ends of first fastener respectively, and the both ends of second fastener and first fastener are run through in proper order on the top of two fastening bolt, the equal threaded connection in top of two fastening bolt has the nut, the connecting rod is all fixed to be equipped with in the middle part of two fastening bolt, drive mechanism includes U type spare, gear and rack, the tip at the connecting rod is fixed to U type spare, the rotatory pivot of pegging graft in middle part of U type spare, the fixed middle part at the pivot of establishing of gear cover, the side at the sampling tube is fixed to the rack.

Description

Sampling device for liquefied natural gas

Technical Field

The utility model relates to a sampling device specifically is a sampling device of liquefied natural gas.

Background

Natural gas refers to all gases naturally occurring in nature, including gases formed by various natural processes in the air space, water space, and rock space. The definition of "natural gas" which has been common for a long time is a narrow definition from the energy point of view, and refers to a mixture of hydrocarbon and non-hydrocarbon gases which are naturally trapped in the formation. Generally, when natural gas is mined, the purity and the like of the natural gas need to be sampled and analyzed, so that a sampling device is needed.

Because the pipeline size of gas production is different, the workman just need use the sampling device of different bore sizes to take a sample like this in the sample, just so need purchase the sampling device of different specifications in all, can increase the economic burden of enterprise, the coupling mechanism of current sampling device and pipeline in addition is not very firm, takes place to drop easily. Therefore, the sampling device for the liquefied natural gas is improved.

SUMMERY OF THE UTILITY MODEL

For solving the defect that prior art exists, the utility model provides a sampling device of liquefied natural gas.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a sampling device for liquefied natural gas, which comprises a sampling tube and a fixing mechanism, wherein transmission mechanisms are arranged on two sides of the sampling tube, the two transmission mechanisms are respectively and fixedly connected with two ends of the fixing mechanism, the fixing mechanism comprises a first clamping piece, a second clamping piece and two fastening bolts, the two fastening bolts are respectively arranged on two ends of the first clamping piece, the top ends of the two fastening bolts sequentially penetrate through two ends of the second clamping piece and the first clamping piece, the top ends of the two fastening bolts are both in threaded connection with nuts, the middle parts of the two fastening bolts are both fixedly provided with connecting rods, the transmission mechanisms comprise U-shaped pieces, gears and racks, the U-shaped pieces are fixed at the end parts of the connecting rods, the middle parts of the U-shaped pieces are rotatably inserted with rotating shafts, the gears are fixedly sleeved at the middle parts of the rotating shafts, the racks are fixed on the side surfaces of the, the sampling tube is characterized in that the gear is meshed with the rack, a sealing gasket is fixedly arranged at the edge of one end of the sampling tube, a piston is slidably connected to the inner cavity of the sampling tube, and a pull rod is fixedly inserted in the middle of one side, away from the fixing mechanism, of the piston.

As a preferred technical scheme of the utility model, drive mechanism still includes two stoppers and two spacing grooves, two the stopper is located the top and the bottom of U type spare respectively, and two the one end of stopper all with U type spare fixed connection, two the surface at the sampling tube is seted up to the spacing groove, and two the spacing groove is located the top and the bottom of rack respectively, stopper and spacing groove phase-match set up, and two the other end of stopper slides respectively and pegs graft in two spacing grooves.

As the utility model discloses a preferred technical scheme, the stopper is close to the top of first fastener one side and articulates through the spring hinge has the limiting plate, the limiting plate cooperatees with the rack and sets up.

As a preferred technical scheme of the utility model, first fastener and second fastener all are the semicircle arc type, and first fastener and second fastener symmetry set up, the internal surface of first fastener and second fastener is all fixed and is equipped with the rubber slipmat.

As a preferred technical scheme of the utility model, the fixed rotatory piece that is equipped with in top of pivot, rotatory piece is hexagonal prism type, and the size of rotatory piece outline is the same with the bolt head of standard.

As an optimized technical scheme of the utility model, the sampling tube inner chamber is close to the fixed choke valve that is equipped with of one end that seals up.

As an optimized technical scheme of the utility model, the fixed separation blade that is equipped with of one end of pull rod.

As a preferred technical scheme of the utility model, the card hole has been seted up at the middle part of second fastener bottom, the card hole cooperatees with fastening bolt's bottom and sets up.

The utility model has the advantages that: this sampling device of liquefied natural gas, cooperation through first fastener and second fastener, use fastening bolt to provide the clamp force, let first fastener and second fastener fix on the pipeline, the internal surface of first fastener and second fastener is all fixed and is equipped with the rubber slipmat, can increase the frictional force between the pipeline that first fastener and second fastener and clamp were got, can guarantee good fixed effect, be provided with sealed the pad at the tip of sampling tube in addition, regardless of the great pipeline of bore or the less pipeline of bore, after fixing, through sealed the sealed back of filling up, all can carry out effectual sample, the suitability is stronger, can the economic burden of effectual reduction enterprise.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments or technical descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a sampling device for liquefied natural gas according to the present invention;

fig. 2 is a schematic view of an end portion of a sampling tube of a sampling apparatus for liquefied natural gas according to the present invention;

fig. 3 is a schematic view of an internal cross-sectional structure of a sampling tube of a sampling apparatus for liquefied natural gas according to the present invention;

fig. 4 is the utility model relates to a sampling device's of liquefied natural gas limiting plate structure schematic diagram.

Reference numerals: 1. a sampling tube; 2. a first engaging member; 3. a second engaging member; 4. fastening a bolt; 5. a connecting rod; 6. a U-shaped member; 7. a gear; 8. a rack; 9. rotating the block; 10. a gasket; 11. a piston; 12. a pull rod; 13. a limiting block; 14. a limiting groove; 15. a limiting plate; 16. a throttle valve.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Embodiments of the present invention/utility model will be described in detail below with reference to the drawings.

The embodiment of the utility model provides a sampling device of liquefied natural gas, as shown in fig. 1-4, including a sampling tube 1 and a fixing mechanism, both sides of the sampling tube 1 are provided with transmission mechanisms, and two transmission mechanisms are respectively fixedly connected with both ends of the fixing mechanism, the fixing mechanism includes a first fastener 2, a second fastener 3 and two fastening bolts 4, two fastening bolts 4 are respectively located at both ends of the first fastener 2, and the top ends of two fastening bolts 4 sequentially penetrate through both ends of the second fastener 3 and the first fastener 2, the top ends of two fastening bolts 4 are both in threaded connection with nuts, the middle parts of two fastening bolts 4 are both fixedly provided with a connecting rod 5, the transmission mechanism includes a U-shaped part 6, a gear 7 and a rack 8, the U-shaped part 6 is fixed at the end part of the connecting rod 5, the middle part of the U-shaped part 6 is rotatably inserted with a rotating shaft, the gear 7 is fixedly sleeved at the middle part of the rotating shaft, rack 8 is fixed in the side of sampling tube 1, and gear 7 is connected with rack 8 meshing, and the fixed sealed pad 10 that is equipped with in edge of 1 one end of sampling tube, the inner chamber sliding connection of sampling tube 1 has piston 11, and the middle part that fixed establishment one side was kept away from to piston 11 is fixed to be pegged graft and is had pull rod 12.

Wherein, drive mechanism still includes two stopper 13 and two spacing grooves 14, two stopper 13 are located the top and the bottom of U type spare 6 respectively, and the one end of two stopper 13 all with U type spare 6 fixed connection, two spacing grooves 14 are seted up on the surface of sampling tube 1, and two spacing grooves 14 are located the top and the bottom of rack 8 respectively, stopper 13 and spacing groove 14 phase-match set up, and the other end of two stopper 13 slides respectively and pegs graft in two spacing grooves 14, it can carry out effectual spacing to sampling tube 1 and drive mechanism to set up stopper 13 and spacing groove 14, avoid sampling tube 1 to rock or drop when carrying out the transmission.

Wherein, stopper 13 is close to the top of 2 one sides of first fastener and articulates through the spring hinge has limiting plate 15, limiting plate 15 and rack 8 cooperate and set up, like this when the sampling tube 1 is to fixed establishment's direction motion, the tooth on the rack 8 can push up limiting plate 15, after limiting plate 15 is crossed to the last tooth of rack 8, limiting plate 15 loses and blocks and will resume the normal position under the spring hinge's elastic force effect, if sampling tube 1 is to the opposite direction motion like this, limiting plate 15 will block rack 8, avoid 8 reverse motions of rack, play fine limiting displacement.

The first clamping piece 2 and the second clamping piece 3 are both semi-circular arc-shaped, the first clamping piece 2 and the second clamping piece 3 are symmetrically arranged, rubber anti-slip pads are fixedly arranged on the inner surfaces of the first clamping piece 2 and the second clamping piece 3, the rubber anti-slip pads can increase the friction force between the first clamping piece 2 and the second clamping piece 3 and a clamped pipeline, and a good fixing effect can be guaranteed.

Wherein, the fixed rotatory piece 9 that is equipped with in top of pivot, rotatory piece 9 is hexagonal prism type, and the size of the outline of rotatory piece 9 is the same with the bolt head of standard, just so is convenient for use chaste tree spanner block to rotatory piece 9 on, the convenient countershaft rotates, and then is convenient for remove sampling tube 1.

Wherein, the fixed choke valve 16 that is equipped with of one end that is close to sealed pad 10 in the inner chamber of sampling tube 1, after the sample is ended, can avoid the inside gas reflux of sampling tube 1 like this, guarantee the inside leakproofness of sampling tube 1.

Wherein, the one end of pull rod 12 is fixed and is equipped with the separation blade, sets up the baffle and can be convenient for promote pull rod 12 to the inside of sampling tube.

Wherein, the card hole has been seted up at the middle part of 3 bottoms of second fastener, and the card hole cooperatees with fastening bolt 4's bottom and sets up, and like this when fastening bolt 4, the card hole can carry out relatively fixed to fastening bolt 4.

When the sampling pipe clamping device works, the top of the second clamping piece 3 is clamped with the bottom of a pipeline, then the first clamping piece 2 is clamped at the top of the pipeline, then two nuts are respectively connected to the two fastening bolts 4 in a threaded manner and are screwed down by a spanner, meanwhile, rubber anti-slip pads are fixedly arranged on the inner surfaces of the first clamping piece 2 and the second clamping piece 3, the friction force between the first clamping piece 2 and the second clamping piece 3 and the clamped pipeline can be increased, a good fixing effect is ensured, then the two rotating blocks 9 are clamped by using a chaste wheel spanner, the rotating blocks 9 are rotated, a rotating shaft fixedly connected with the rotating blocks 9 drives the gear 7 to rotate, further, the rack 8 matched with the gear 7 moves along with the gear, the sampling pipe 1 is driven to move towards the direction of the pipeline, and a limiting plate 15 is hinged to the top end, close to one side of the first clamping piece 2, of the second clamping piece 3 through a spring hinge, therefore, when the sampling tube 1 moves towards the direction of the fixing mechanism, the limiting plate 15 is jacked up by the teeth on the rack 8, after the upper teeth of the rack 8 cross the limiting plate 15, the limiting plate 15 loses the blockage and recovers the original position under the elastic force action of the spring hinge, if the sampling tube 1 moves in the reverse direction, the limiting plate 15 blocks the rack 8 to play a good limiting role, the sampling tube 1 continuously moves forwards until the sealing gasket 10 is attached to the pipe orifice of the pipeline, then the gas can be collected by opening the valve and the throttle valve 16 on the pipeline, the throttle valve 16 is closed after the collection is finished, the end part of the sampling tube 1 is communicated with the interface of an external detection device, then the throttle valve 16 is opened, and the pull rod 12 is pushed inwards to detect the discharged gas, the device has simple structure and convenient application, the applicability is strong.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The sampling device for the liquefied natural gas comprises a sampling pipe (1) and a fixing mechanism, and is characterized in that transmission mechanisms are arranged on two sides of the sampling pipe (1), the two transmission mechanisms are fixedly connected with two ends of the fixing mechanism respectively, the fixing mechanism comprises a first clamping piece (2), a second clamping piece (3) and two fastening bolts (4), the two fastening bolts (4) are located at two ends of the first clamping piece (2) respectively, the top ends of the two fastening bolts (4) penetrate through two ends of the second clamping piece (3) and two ends of the first clamping piece (2) in sequence, nuts are connected to the top ends of the two fastening bolts (4) in a threaded manner, a connecting rod (5) is fixedly arranged in the middle of each of the two fastening bolts (4), the transmission mechanism comprises a U-shaped piece (6), a gear (7) and a rack (8), the U-shaped piece (6) is fixed at the end part of the connecting rod (5), the middle part of U-shaped spare (6) is rotatory to be pegged graft and is had the pivot, gear (7) fixed cover is established at the middle part of pivot, the side at sampling tube (1) is fixed in rack (8), gear (7) are connected with rack (8) meshing, the edge of sampling tube (1) one end is fixed to be equipped with sealed pad (10), the inner chamber sliding connection of sampling tube (1) has piston (11), the middle part that fixed establishment one side was kept away from in piston (11) is fixed to be pegged graft and is had pull rod (12).

2. The liquefied natural gas sampling device according to claim 1, wherein the transmission mechanism further includes two limiting blocks (13) and two limiting grooves (14), the two limiting blocks (13) are respectively located at the top and the bottom of the U-shaped part (6), one ends of the two limiting blocks (13) are both fixedly connected with the U-shaped part (6), the two limiting grooves (14) are formed in the surface of the sampling tube (1), the two limiting grooves (14) are respectively located at the top and the bottom of the rack (8), the limiting blocks (13) and the limiting grooves (14) are arranged in a matching manner, and the other ends of the two limiting blocks (13) are respectively inserted into the two limiting grooves (14) in a sliding manner.

3. The liquefied natural gas sampling device according to claim 2, wherein a limiting plate (15) is hinged to the top end of the limiting block (13) close to one side of the first clamping member (2) through a spring hinge, and the limiting plate (15) is matched with the rack (8).

4. The liquefied natural gas sampling device according to claim 1, wherein the first engaging member (2) and the second engaging member (3) are semi-circular arc shaped, the first engaging member (2) and the second engaging member (3) are symmetrically disposed, and rubber anti-slip pads are fixed on inner surfaces of the first engaging member (2) and the second engaging member (3).

5. The liquefied natural gas sampling device according to claim 1, wherein a rotating block (9) is fixedly arranged at the top of the rotating shaft, the rotating block (9) is hexagonal prism-shaped, and the size of the outer contour of the rotating block (9) is the same as that of a standard bolt head.

6. The liquefied natural gas sampling device according to claim 1, wherein a throttle valve (16) is fixedly arranged at one end of the inner cavity of the sampling tube (1) close to the sealing gasket (10).

7. The liquefied natural gas sampling device according to claim 1, wherein a stopper is fixed to one end of the pull rod (12).

8. The liquefied natural gas sampling device according to claim 1, wherein a clamping hole is formed in a middle portion of the bottom end of the second clamping member (3), and the clamping hole is matched with the bottom end of the fastening bolt (4).