A natural gas sampling device

Abstract

The utility model provides a kind of natural gas sampling device, including jar body, still include: folding air bag, fixed in the top end of jar body interior, the top end of jar body is fixed with connecting pipe, natural gas pipeline, it is set in the upper of connecting pipe, the bottom end of natural gas pipeline is equipped with the sampling valve being linked with connecting pipe, discharge valve, it is installed in the side of jar body top end, quick -joint structure, it is set between connecting pipe and sampling valve. The utility model, by pressing down pressure ring, the extrusion of steel ball is released, then the butt joint pipe is inserted into butt joint sleeve interior, loosen pressure ring makes it extrude steel ball and be inserted into buckle groove, the position of butt joint pipe and butt joint sleeve is fixed, whereby realized the pipeline quick -joint function of this device, without complex tool and tedious calibration operation, the butt joint of pipeline can be completed quickly, shorten sampling preparation period, more rapid response when emergency sampling, simplify operation process simultaneously, reduce the skill requirement to operating personnel.

Description

Technical Field

[0001] This utility model relates to the field of natural gas sampling technology, and in particular to a natural gas sampling device. Background Technology

[0002] In the entire industrial chain of natural gas, including extraction, transportation, storage, and end-use, the composition, purity, and impurity content of natural gas are directly related to production safety and environmental compliance. Precise testing is necessary to achieve quality control and risk prediction. Therefore, natural gas sampling devices are set up to quickly collect representative natural gas samples, avoid sample composition distortion, and provide reliable sample support for subsequent component analysis, calorific value detection, and impurity screening.

[0003] A search revealed Chinese patent publication number CN220136771U, which discloses a natural gas sampling device, relating to the field of natural gas sampling. This natural gas sampling device includes a transport pipe, a temporary storage tank fixedly connected to the top of the transport pipe, a connecting pipe fixedly connected to the bottom of the temporary storage tank, the connecting pipe penetrating the transport pipe and fixedly connected thereto, a connector fixedly connected to the bottom of the temporary storage tank, a bracket fixedly connected to the bottom of the inner part of the temporary storage tank, a threaded rod threadedly connected inside the bracket, and an air inlet head fixedly connected to the bottom of the threaded rod. The air inlet head is adapted to the connector head and the bracket. This natural gas sampling device uses a vacuum pump to draw natural gas from inside the temporary storage tank into a sampling box for collection, facilitating subsequent testing, improving the separation and sampling of natural gas samples, enhancing safety, preventing natural gas leakage, and facilitating control of the output.

[0004] The aforementioned patent has the following shortcomings: the connection between the connector and the air inlet of the existing device requires adjusting the position by connecting the threaded rod to the bracket, and the connection process requires the use of tools for tightening and calibration, which is cumbersome and lacks flexibility. It is difficult to complete the connection quickly in scenarios such as emergency sampling on site, resulting in low sampling efficiency.

[0005] Therefore, a natural gas sampling device is proposed. Utility Model Content

[0006] In view of this, the present invention aims to provide a natural gas sampling device to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial alternative.

[0007] The technical solution of this utility model embodiment is implemented as follows: A natural gas sampling device includes a tank, and further includes: A folding airbag is fixed to the top of the tank body, and a connecting pipe is fixed to the top of the tank body. A natural gas pipeline is installed above the connecting pipe, and a sampling valve connected to the connecting pipe is installed at the bottom end of the natural gas pipeline. A discharge valve is installed on one side of the top of the tank, and a discharge pipe is installed on one side of the discharge valve; A quick-connect structure is provided between the connecting pipe and the sampling valve. The quick-connect structure includes a mating sleeve fixed to the top of the connecting pipe. A mating tube connected to the sampling valve is inserted inside the top of the mating sleeve. A sealing gasket is fixed to the bottom of the inside of the mating sleeve. A fixing component is provided on the outside of the mating sleeve. A flow-blocking structure for sampling gas backflow is installed inside the connecting pipe; The extraction and release structure, used to automatically move the folding airbag, is located on both sides of the tank.

[0008] In some embodiments: a control panel is installed on the side of the tank, and a storage battery is installed at the bottom of the tank.

[0009] In some embodiments: the fixing component includes a pressure ring slidably connected to the top of the outer side of the mating sleeve, a stop ring fixed to the bottom of the outer side of the mating sleeve, a telescopic spring connected to the pressure ring fixed to the top of the stop ring, a buckle groove opened on the outer side wall of the mating tube, and a steel ball rotatably connected to the outer side wall of the mating sleeve.

[0010] In some embodiments: the steel ball extends into the interior of the mating sleeve and engages with the snap groove, and the frontal cross-section of the top of the pressure ring has a funnel-shaped inclined structure.

[0011] In some embodiments: the extraction structure includes a first protective sleeve fixed to one side of the tank body, a screw rotatably connected inside the first protective sleeve, a reduction motor fixed to the bottom end of the first protective sleeve, a threaded sleeve threaded to the outside of the screw, a second protective sleeve fixed to the other side of the tank body, a guide rod fixed inside the second protective sleeve, a sliding block slidably connected to the outside of the guide rod, and a pressure plate connected to the threaded sleeve fixed to one side of the sliding block.

[0012] In some embodiments: the outer wall of the screw is provided with an external thread, and the inside of the screw sleeve is provided with an internal thread that mates with the external thread.

[0013] In some embodiments: the flow-blocking structure includes a guide frame fixed inside the connecting pipe, a movable rod slidably connected inside the guide frame, a push plate fixed to the top of the movable rod, a sealing ring fixed to the outer side of the top of the push plate, a compression spring connected to the guide frame fixed to the bottom of the push plate, and a flow-blocking ring fixed to the top of the inside of the connecting pipe.

[0014] In some embodiments: the push plate forms a telescopic structure with the flow-blocking ring via a compression spring, and the diameter of the push plate is larger than the inner diameter of the flow-blocking ring.

[0015] The present invention has the following advantages due to the adoption of the above technical solution: 1. A natural gas sampling device, which releases the compression of steel balls by pressing down on the pressure ring, then inserts the connecting pipe into the docking sleeve, and releases the pressure ring to allow the compressed steel balls to be locked into the groove, thus fixing the position of the connecting pipe and the docking sleeve. This realizes the quick connection function of the pipeline of this device, which can quickly complete the pipeline connection without complicated tools and cumbersome calibration operations, shorten the sampling preparation cycle, and respond more quickly in emergency sampling. At the same time, it simplifies the operation process and reduces the skill requirements of the operators.

[0016] 2. A natural gas sampling device, wherein a screw is driven to rotate by a geared motor, which causes the screw sleeve to drive the pressure plate, thereby causing the folded gas bag to contract or expand, thus realizing the automatic sampling function of the device. The amount of sampling can be automatically adjusted according to the detection requirements, without the need for manual control of the sampling volume, effectively avoiding resource waste caused by excessive sampling or data distortion caused by insufficient sampling.

[0017] 3. A natural gas sampling device, wherein a compression spring resets and pushes a push plate upward, causing the sealing ring and the flow-blocking ring to fit tightly together, thereby blocking the natural gas backflow channel. This achieves the one-way sealing function of the device, effectively preventing backflow and leakage during natural gas sampling, ensuring the safety and sealing of the sampling operation, and avoiding safety risks caused by gas leakage.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 In this utility model Figure 1 Another structural diagram from a different angle; Figure 3 This is a schematic diagram of the overall cross-sectional structure of this utility model; Figure 4 A three-dimensional cross-sectional structural diagram of the quick-connect structure provided by this utility model.

[0021] Figure label: 1-Tank body, 2-Control panel, 3-Extraction structure, 301-First protective sleeve, 302-Second protective sleeve, 303-Guide rod, 304-Sliding block, 305-Pressure plate, 306-Threaded sleeve, 307-Screw, 308-Gear motor, 4-Connecting pipe, 5-Natural gas pipeline, 6-Sampling valve, 7-Quick connection structure, 701-Matching sleeve, 702-Steel ball, 703-Matching pipe, 704-Groove, 705-Pressure ring, 706-Telescopic spring, 707-Stop ring, 708-Sealing gasket, 8-Flow obstruction structure, 801-Guide frame, 802-Push plate, 803-Moving rod, 804-Compression spring, 805-Sealing ring, 806-Flow obstruction ring, 9-Exhaust valve, 10-Exhaust pipe, 11-Folding airbag, 12-Battery. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] Example 1: As Figures 1 to 4 As shown, a natural gas sampling device includes a tank 1, and further includes: The folding airbag 11 is fixed to the top of the tank 1 inside the tank body 1, and the top of the tank body 1 is fixed with a connecting pipe 4. Natural gas pipeline 5 is located above connecting pipe 4, and a sampling valve 6 connected to connecting pipe 4 is installed at the bottom end of natural gas pipeline 5. Discharge valve 9 is installed on one side of the top of tank 1, and discharge pipe 10 is installed on one side of discharge valve 9; A quick-connect structure 7 is provided between the connecting pipe 4 and the sampling valve 6. The quick-connect structure 7 includes a docking sleeve 701 fixed to the top of the connecting pipe 4. A docking pipe 703 connected to the sampling valve 6 is inserted inside the top of the docking sleeve 701. A sealing gasket 708 is fixed to the bottom of the docking sleeve 701. A fixing component is provided on the outside of the docking sleeve 701. The flow-blocking structure 8 for sampling gas backflow is installed inside the connecting pipe 4; The extraction and release structure 3, which is used to automatically move the folding airbag 11, is set on both sides of the tank body 1.

[0026] A control panel 2 is installed on the side of the tank 1, and a storage battery 12 is installed at the bottom inside the tank 1.

[0027] In this embodiment, when natural gas sampling is required, the device is started by the control board 2, and the battery 12 provides power support to the device. First, the discharge valve 9 is kept closed to prevent natural gas leakage during the sampling process. At the same time, the extraction and release structure 3 is operated to retract and fold the folded airbag 11 to reserve space for accommodating the natural gas sample. The connecting pipe 4 is connected to the sampling valve 6 of the natural gas pipeline 5 through the quick-connect structure 7. Then, the sampling valve 6 is opened, so that the natural gas inside the natural gas pipeline 5 is injected into the interior of the folded airbag 11 through the connecting pipe 4. At the same time, the extraction and release structure 3 drives the folded airbag 11 to unfold and extract the natural gas.

[0028] like Figures 1 to 3 As shown, the fixing assembly includes a pressure ring 705 slidably connected to the top of the outer side of the docking sleeve 701. A stop ring 707 is fixed to the bottom of the outer side of the docking sleeve 701. A telescopic spring 706 connected to the pressure ring 705 is fixed to the top of the stop ring 707. A buckle groove 704 is provided on the outer side wall of the docking tube 703. A steel ball 702 is rotatably connected to the outer side wall of the docking sleeve 701. The steel ball 702 extends into the interior of the docking sleeve 701 and engages with the buckle groove 704. The front cross-section of the top of the pressure ring 705 has a funnel-shaped inclined structure.

[0029] In this embodiment, when connecting the connecting pipe 4 and the sampling valve 6, the pressure ring 705 is pressed down to compress the telescopic spring 706, so that the pressure ring 705 no longer squeezes the steel ball 702. Then, the connecting pipe 703 is inserted into the connecting sleeve 701. After the connecting pipe 703 is fully inserted into the connecting sleeve 701 and squeezes the sealing gasket 708, the pressure ring 705 is released, and the telescopic spring 706 pushes the pressure ring 705 to reset. At the same time, the inner wall of the pressure ring 705 squeezes the steel ball 702 into the snap groove 704, fixing the position of the connecting pipe 703 and the connecting sleeve 701, thereby completing the quick docking and fixing, which improves the efficiency and sealing of the device and pipeline docking to a certain extent.

[0030] Example 2: A natural gas sampling device. This example is an improvement on Example 1, as follows: Figures 1 to 4 As shown, the flow-blocking structure 8 includes a guide frame 801 fixed inside the connecting pipe 4. A moving rod 803 is slidably connected inside the guide frame 801. A push plate 802 is fixed to the top of the moving rod 803. A sealing ring 805 is fixed to the outer side of the top of the push plate 802. A compression spring 804 connected to the guide frame 801 is fixed to the bottom of the push plate 802. A flow-blocking ring 806 is fixed to the top inside the connecting pipe 4. The push plate 802 forms a telescopic structure with the compression spring 804 and the flow-blocking ring 806. The diameter of the push plate 802 is larger than the inner diameter of the flow-blocking ring 806.

[0031] In this embodiment, when natural gas enters the connecting pipe 4 through the sampling valve 6, the airflow pushes the push plate 802 downward, compressing the compression spring 804. At the same time, the push plate 802 drives the sealing ring 805 to disengage from the flow-blocking ring 806, and the natural gas flows smoothly through the flow-blocking ring 806 and the connecting pipe 4 into the tank 1. After sampling, the airflow pressure disappears, the compression spring 804 resets and pushes the push plate 802 upward, so that the sealing ring 805 and the flow-blocking ring 806 fit tightly together, thereby blocking the natural gas backflow channel.

[0032] like Figures 1 to 4 As shown, the extraction structure 3 includes a first protective sleeve 301 fixed to one side of the tank body 1. A screw 307 is rotatably connected inside the first protective sleeve 301. A reduction motor 308 is fixed to the bottom end of the first protective sleeve 301. A threaded sleeve 306 is threaded to the outside of the screw 307. A second protective sleeve 302 is fixed to the other side of the tank body 1. A guide rod 303 is fixed inside the second protective sleeve 302. A sliding block 304 is slidably connected to the outside of the guide rod 303. A pressure plate 305 connected to the threaded sleeve 306 is fixed to one side of the sliding block 304. An external thread is provided on the outer wall of the screw 307, and an internal thread that cooperates with the external thread is provided inside the threaded sleeve 306.

[0033] In this embodiment, when the sampling amount needs to be automatically adjusted, the control board 2 controls the reduction motor 308 to start, so that the reduction motor 308 drives the screw 307 to rotate. At the same time, the screw sleeve 306 moves axially along the screw 307 through the thread. The screw sleeve 306 drives the pressure plate 305 to move up and down inside the tank 1, squeezing the folded airbag 11 to contract, or moving in the opposite direction to release the folded airbag 11 to extend. At the same time, the sliding block 304 slides synchronously along the guide rod 303, thereby adjusting the sampling amount by changing the volume of the folded airbag 11.

[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A natural gas sampling device, comprising a tank (1), characterized in that, Also includes: A folding airbag (11) is fixed to the top of the tank (1), and a connecting pipe (4) is fixed to the top of the tank (1). A natural gas pipeline (5) is installed above the connecting pipe (4), and a sampling valve (6) connected to the connecting pipe (4) is installed at the bottom end of the natural gas pipeline (5). A discharge valve (9) is installed on one side of the top of the tank (1), and a discharge pipe (10) is installed on one side of the discharge valve (9). A quick-connect structure (7) is provided between the connecting pipe (4) and the sampling valve (6). The quick-connect structure (7) includes a docking sleeve (701) fixed to the top of the connecting pipe (4). A docking pipe (703) connected to the sampling valve (6) is inserted inside the top of the docking sleeve (701). A sealing gasket (708) is fixed at the bottom inside the docking sleeve (701). A fixing component is provided on the outside of the docking sleeve (701). The flow-blocking structure (8) for sampling gas backflow is installed inside the connecting pipe (4); The extraction and release structure (3) for automatically moving the folding airbag (11) is set on both sides of the tank (1).

2. The natural gas sampling device according to claim 1, characterized in that: A control panel (2) is installed on the side of the tank (1), and a storage battery (12) is installed at the bottom inside the tank (1).

3. The natural gas sampling device according to claim 1, characterized in that: The fixing assembly includes a pressure ring (705) slidably connected to the top of the outer side of the docking sleeve (701), a stop ring (707) fixed to the bottom of the outer side of the docking sleeve (701), a telescopic spring (706) connected to the pressure ring (705) fixed to the top of the stop ring (707), a buckle groove (704) is provided on the outer side wall of the docking tube (703), and a steel ball (702) is rotatably connected to the outer side wall of the docking sleeve (701).

4. A natural gas sampling device according to claim 3, characterized in that: The steel ball (702) extends into the interior of the mating sleeve (701) and engages with the snap groove (704), and the top of the pressure ring (705) has a funnel-shaped inclined cross-section.

5. A natural gas sampling device according to claim 1, characterized in that: The extraction structure (3) includes a first protective sleeve (301) fixed to one side of the tank (1), a screw (307) rotatably connected inside the first protective sleeve (301), a reduction motor (308) fixed at the bottom end of the first protective sleeve (301), a threaded sleeve (306) threadedly connected to the outside of the screw (307), a second protective sleeve (302) fixed to the other side of the tank (1), a guide rod (303) fixed inside the second protective sleeve (302), a sliding block (304) slidably connected to the outside of the guide rod (303), and a pressure plate (305) connected to the threaded sleeve (306) fixed to one side of the sliding block (304).

6. A natural gas sampling device according to claim 5, characterized in that: The screw (307) has an external thread on its outer side wall, and the screw sleeve (306) has an internal thread that mates with the external thread.

7. A natural gas sampling device according to claim 1, characterized in that: The flow-blocking structure (8) includes a guide frame (801) fixed inside the connecting pipe (4), a moving rod (803) is slidably connected inside the guide frame (801), a push plate (802) is fixed at the top of the moving rod (803), a sealing ring (805) is fixed on the outer side of the top of the push plate (802), a compression spring (804) connected to the guide frame (801) is fixed at the bottom of the push plate (802), and a flow-blocking ring (806) is fixed at the top inside the connecting pipe (4).

8. A natural gas sampling device according to claim 7, characterized in that: The push plate (802) forms a telescopic structure with the flow-blocking ring (806) through the compression spring (804), and the diameter of the push plate (802) is larger than the inner diameter of the flow-blocking ring (806).

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