Pressure-maintaining adjusting type natural gas pressure-stabilizing sampling device

Abstract

The utility model relates to the technical field of natural gas sampling equipment, and particularly discloses a pressure-maintaining adjusting type natural gas pressure-stabilizing sampling device which comprises an installation box and a sampling bottle, the sampling bottle is fixedly arranged in the installation box through an installation assembly, a piston plate is arranged in the sampling bottle in a sliding mode, and the piston plate is arranged in the installation box. An adjusting mechanism for adjusting the piston plate to move is arranged on the sampling bottle, an air inlet pipe and an air outlet pipe are respectively arranged on the sampling bottle, joints are arranged at the tops of the air inlet pipe and the air outlet pipe, and first valve bodies are arranged on the air inlet pipe and the air outlet pipe; through the arrangement and use of the detection assembly, the gas pressure of the natural gas is detected in advance before the natural gas is sampled, so that the gas pressure in the sampling bottle is conveniently adjusted to be consistent with the gas pressure of the natural gas through the matched use of the adjusting mechanism, and the stable-pressure sampling of the natural gas is ensured; and the natural gas sample is prevented from throttling expansion due to sudden pressure drop, so that the sample loses representativeness.

Description

TECHNICAL FIELD

[0001] The utility model belongs to natural gas sampling equipment technical field, concretely relates to a kind of natural gas pressure-stabilizing sampling device of pressure maintaining adjustment. BACKGROUND

[0002] Natural gas is usually developed and collected in natural gas reservoir, and before the actual development and collection of natural gas reservoir, the natural gas in natural gas reservoir needs to be sampled, and after sampling, the sampled natural gas is detected to decide the subsequent collection of natural gas reservoir.

[0003] The existing natural gas sampling device needs to be adjusted manually by artificial when using the gas pressure in the sampling vessel, and since the natural gas sampling process is short, it is easy to occur that the gas pressure in the sampling vessel has not been adjusted after the natural gas enters the sampling vessel, thereby affecting the natural gas sampling, and the representativeness of the natural gas sample in the sampling vessel is difficult to guarantee. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of natural gas pressure-stabilizing sampling device of pressure maintaining adjustment to solve the problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A kind of natural gas pressure-stabilizing sampling device of pressure maintaining adjustment, comprising: installation box and sampling bottle, the sampling bottle is fixedly arranged in installation box by installation component, piston plate is slidably arranged in the sampling bottle, the sampling bottle is equipped with adjusting mechanism for adjusting the movement of piston plate, the sampling bottle is respectively provided with inlet pipe and outlet pipe, the top of inlet pipe and outlet pipe is provided with connector, the first valve body is arranged on the inlet pipe and outlet pipe, detection component is arranged between inlet pipe and sampling bottle;

[0007] The adjusting mechanism includes a push plate fixedly arranged on the piston plate, a push rod fixedly arranged on the push plate, an installation frame fixedly arranged through the sampling bottle, and a control component arranged in the installation frame for driving the push rod to move.

[0008] Preferably, the control component includes a motor fixedly arranged on the installation frame, a lead screw fixedly arranged on the output end of the motor, and a limiting component arranged in the installation frame for limiting the rotation of the push rod.

[0009] Preferably, the limiting component includes a plurality of limiting rods fixedly arranged in the installation frame, a limiting disc fixedly sleeved on the outer wall of the push rod, a movable opening matched with the limiting rods formed in the limiting disc, and a limiting block fixedly arranged on the end of the limiting rod away from the motor and penetrating through the movable opening.

[0010] Preferably, the detection assembly comprises a detection box, the air inlet pipe and the detection box are fixedly connected, the detection box and the sampling bottle are both fixedly provided with a pressure gauge, and the detection box is provided with an air exhaust assembly.

[0011] Preferably, the air exhaust assembly comprises an air exhaust pipe fixedly arranged on the detection box, the top of the air exhaust pipe penetrates the installation box and extends outward, and the air exhaust pipe is provided with a second valve body.

[0012] Preferably, the detection box and the sampling bottle are fixedly provided with a connecting pipe, and the connecting pipe is provided with a third valve body.

[0013] Preferably, the installation assembly comprises two fixing rings fixedly sleeved on the sampling bottle, the bottom of each of the two fixing rings is fixedly provided with an installation seat, the installation seat is fixedly arranged at the bottom of the installation box, an annular plate is fixedly arranged between the two fixing rings, the annular plate is internally provided with a heating plate, the heating plate is arranged in contact with the sampling bottle, the top of the heating plate is fixedly provided with a heating device, and the outer sidewall of the annular plate is fixedly sleeved with a heat preservation plate.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] (1) Through the setting and use of the detection assembly, the gas pressure of natural gas is detected in advance before the sampling of the natural gas, so that the gas pressure in the sampling bottle is adjusted to be consistent with the gas pressure of the natural gas through the cooperation of the adjusting mechanism, thereby ensuring the stable pressure sampling of the natural gas and avoiding the throttling expansion of the natural gas sample due to the sudden pressure drop, so that the sample loses representativeness, and through the cooperation of the motor, the lead screw, the push rod and the push plate, the piston plate is adjusted to move, the gas pressure in the sampling bottle is adjusted, manual adjustment is avoided, pressure adjustment is convenient to control, and use is facilitated.

[0016] (2) Through the setting and use of the heating plate, the heating device and the heat preservation plate, the sampling bottle in the sampling bottle is heated and preserved, the temperature of the natural gas sample is prevented from being reduced after the natural gas sample enters the sampling bottle, the change of the natural gas sample is avoided, and the storage time of the sampling bottle for the natural gas sample is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective view of the utility model;

[0018] Figure 2 It is a sectional view of the installation box in the utility model;

[0019] Figure 3 It is a sectional view of the sampling bottle in the utility model;

[0020] Figure 4 It is a connection structure schematic view of the installation frame and the push plate in the utility model;

[0021] Figure 5 For Figure 3 The structure of A in the middle is enlarged;

[0022] In the figure: 1, installation box; 2, sampling bottle; 3, piston plate; 4, air inlet pipe; 5, air outlet pipe; 6, joint; 7, first valve body; 8, push plate; 9, push rod; 10, mounting frame; 11, motor; 12, screw; 13, limit disc; 14, limit rod; 15, detection box; 16, pressure gauge; 17, exhaust pipe; 18, second valve body; 19, connecting pipe; 20, third valve body; 21, fixing ring; 22, mounting seat; 23, annular plate; 24, heating plate; 25, heating device; 26, heat preservation plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Embodiment one:

[0025] Please refer to Figures 1-5 As shown in the figure, a pressure maintaining and adjusting type natural gas pressure stabilizing sampling device, comprising: an installation box 1 and a sampling bottle 2, the sampling bottle 2 is fixedly arranged in the installation box 1 through a mounting assembly, a piston plate 3 is slidably arranged in the sampling bottle 2, the sampling bottle 2 is provided with an adjusting mechanism for adjusting the movement of the piston plate 3, the sampling bottle 2 is respectively provided with an air inlet pipe 4 and an air outlet pipe 5, the top of the air inlet pipe 4 and the air outlet pipe 5 is provided with a joint 6, the air inlet pipe 4 and the air outlet pipe 5 are provided with a first valve body 7, and a detection assembly is arranged between the air inlet pipe 4 and the sampling bottle 2.

[0026] The adjusting mechanism comprises a push plate 8 fixedly arranged on the piston plate 3, a push rod 9 fixedly arranged on the push plate 8, a mounting frame 10 fixedly arranged on the sampling bottle 2, and a control assembly arranged in the mounting frame 10 for driving the push rod 9 to move.

[0027] As can be seen from the above, when the device is used, the joint 6 on the air inlet pipe 4 is connected with the natural gas, the first valve body 7 on the air inlet pipe 4 is opened, the natural gas pressure is detected by the detection assembly, after the natural gas pressure data is obtained, the push rod 9 is driven to move by the control assembly, the piston plate 3 is driven to move in the sampling bottle 2 by the push plate 8, the pressure in the sampling bottle 2 is adjusted, the pressure in the sampling bottle 2 is kept consistent with the natural gas pressure, after the adjustment is completed, the natural gas pressure stabilizing sampling work is carried out.

[0028] The natural gas pressure is detected in advance through the setting use of the detection assembly, so as to guide the gas pressure adjustment in the sampling bottle 2 according to the detection data, make the gas pressure adjustment more accurate, facilitate the natural gas sample storage, ensure the accuracy of the sample, and through the setting of the adjusting mechanism, the gas pressure adjustment in the sampling bottle 2 is facilitated, and the use is convenient.

[0029] Specifically, with reference to the control assembly shown in Figure 3 and Figure 4 , the control assembly comprises a motor 11 fixedly arranged on the mounting frame 10, a lead screw 12 fixedly arranged at the output end of the motor 11, the lead screw 12 being threadedly connected with the push rod 9, and a limiting assembly arranged in the mounting frame 10 for limiting the rotation of the push rod 9.

[0030] The limiting assembly comprises a plurality of limiting rods 14 fixedly arranged in the mounting frame 10, a limiting disc 13 fixedly sleeved on the outer sidewall of the push rod 9, the limiting disc 13 being provided with a movable opening matched with the limiting rods 14, and the limiting rods 14 being fixedly provided with limiting blocks at the ends away from the motor 11 and penetrating through the movable opening.

[0031] As known from the above, the motor 11 is a servo motor, which is a prior art and will not be described here. The motor 11 rotates in forward and reverse directions to drive the lead screw 12 to rotate, so that the lead screw 12 drives the push rod 9 to move away from or close to the motor 11, the push rod 9 drives the piston plate 3 to move in the sampling bottle 2 through the push plate 8, and the gas pressure in the sampling bottle 2 is adjusted.

[0032] Specifically, with reference to the detection assembly shown in Figure 2 , Figure 3 and Figure 5 , the detection assembly comprises a detection box 15 fixedly connected between the gas inlet pipe 4 and the detection box 15, a pressure gauge 16 fixedly arranged on the detection box 15 and the sampling bottle 2, and an exhaust assembly arranged on the detection box 15.

[0033] The exhaust assembly comprises an exhaust pipe 17 fixedly arranged on the detection box 15, the exhaust pipe 17 penetrating through the installation box 1 at the top and extending outward, and a second valve body 18 arranged on the exhaust pipe 17.

[0034] A connecting pipe 19 is fixedly arranged between the detection box 15 and the sampling bottle 2, and a third valve body 20 is arranged on the connecting pipe 19.

[0035] As can be known from the above, by leading the natural gas into the detection box 15, the pressure of the natural gas is detected by the pressure gauge 16 on the detection box 15, during the detection process, the third valve body 20 is in the closed state, after the detection is completed, the first valve body 7 on the gas inlet pipe 4 is closed, the second valve body 18 on the gas outlet pipe 17 is opened, the natural gas in the detection box 15 is discharged, so as to avoid that the detected natural gas enters the sampling bottle 2 during the sampling process, prevent the natural gas sample from being polluted by the detected natural gas, after the gas discharge is completed, the second valve body 18 is closed, the pressure in the sampling bottle 2 is adjusted according to the pressure data obtained by the pressure gauge 16 on the detection box 15, after the pressure is adjusted, the first valve body 7 on the gas inlet pipe 4 and the third valve body 20 on the connecting pipe 19 are opened, the sampling work is carried out, after the sampling is completed, the first valve body 7 and the third valve body 20 are closed, and the sampling work is completed.

[0036] Embodiment two:

[0037] Referring to Figure 2 and Figure 3 As shown in the figure, the installation assembly comprises two fixing rings 21 fixedly sleeved on the sampling bottle 2, the bottom of each of the two fixing rings 21 is fixedly provided with a mounting seat 22, the mounting seat 22 is fixedly arranged on the bottom of the mounting box 1, an annular plate 23 is fixedly arranged between the two fixing rings 21, the annular plate 23 is internally provided with a heating plate 24, the heating plate 24 is arranged in contact with the sampling bottle 2, the heating device 25 is fixedly arranged on the top of the heating plate 24, and the annular plate 23 is fixedly sleeved with a heat preservation plate 26 on the outer side wall.

[0038] As can be known from the above, the temperature detection device (not shown in the figure) is arranged in the sampling bottle 2 and the detection box 15, the temperature detection device and the heating device 25 are prior art, and details are not repeated here, when the detection box 15 detects the pressure of the natural gas, the temperature of the natural gas is also detected, the sampling bottle 2 is heated by the heating device 25 and the heating plate 24 according to the detection data, so as to facilitate the sampling bottle 2 to preserve the natural gas sample, avoid the temperature of the natural gas sample to be reduced during storage, and prevent the detection data of the sample from being affected in the later period.

[0039] It should be noted that, during use, the sampling bottle 2 is first heated, and then the pressure adjustment work is carried out, so as to avoid that the temperature of the sampling bottle 2 affects the pressure in the sampling bottle 2 after the pressure adjustment is completed.

[0040] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pressure maintaining and pressure regulating type natural gas pressure stabilizing sampling device, characterized by, The utility model relates to a kind of sampling device, including: Mounting box (1) and sampling bottle (2), the sampling bottle (2) is fixedly arranged in mounting box (1) by mounting assembly, piston plate (3) is slidably arranged in the sampling bottle (2), adjusting mechanism for adjusting the movement of piston plate (3) is equipped on the sampling bottle (2), gas inlet pipe (4) and gas outlet pipe (5) are respectively arranged on the sampling bottle (2), connector (6) is arranged at the top of gas inlet pipe (4) and gas outlet pipe (5), first valve body (7) is arranged on gas inlet pipe (4) and gas outlet pipe (5), detection assembly is equipped between gas inlet pipe (4) and sampling bottle (2); The adjusting mechanism includes push plate (8) fixedly arranged on piston plate (3), push rod (9) is fixedly arranged on the push plate (8), mounting frame (10) is fixedly arranged through and is arranged on the sampling bottle (2), control assembly for driving push rod (9) to move is equipped in the mounting frame (10).

2. The pressure maintaining and adjusting type natural gas pressure stabilizing and sampling device according to claim 1, characterized in that: The control assembly includes motor (11) fixedly arranged on mounting frame (10), screw rod (12) is fixedly arranged at the output of motor (11), screw rod (12) and push rod (9) are threadedly connected, limiting assembly for limiting the rotation of push rod (9) is equipped in the mounting frame (10).

3. The pressure maintaining and adjusting type natural gas pressure stabilizing and sampling device according to claim 2, characterized in that: The limiting assembly includes a plurality of limiting rods (14) fixedly arranged in the mounting frame (10), limiting disc (13) is fixedly sleeved on the outer wall of push rod (9), the movable mouth that is adapted to limiting rod (14) is formed in the limiting disc (13), limiting block is fixedly arranged at the end, away from motor (11), of limiting rod (14) and passes through movable mouth.

4. The pressure maintaining and adjusting type natural gas pressure stabilizing and sampling device according to claim 1, characterized in that: The detection assembly includes detection box (15), is fixedly connected between gas inlet pipe (4) and detection box (15), pressure gauge (16) is fixedly arranged on detection box (15) and sampling bottle (2), and exhaust assembly is equipped on detection box (15).

5. The pressure maintaining and adjusting type natural gas pressure stabilizing and sampling device according to claim 4, characterized in that: The exhaust assembly includes exhaust pipe (17) fixedly arranged on detection box (15), exhaust pipe (17) is outwardly extended through mounting box (1) at the top, and second valve body (18) is arranged on exhaust pipe (17).

6. The pressure maintaining and adjusting type natural gas pressure stabilizing and sampling device according to claim 4, characterized in that: Detection box (15) and sampling bottle (2) are fixedly provided with connecting pipe (19), and third valve body (20) is arranged on connecting pipe (19).

7. The pressure maintaining and adjusting type natural gas pressure stabilizing and sampling device according to claim 1, characterized in that: The mounting assembly includes two fixed rings (21) fixedly sleeved on sampling bottle (2), mounting seat (22) is fixedly arranged at the bottom of two fixed rings (21), the mounting seat (22) is fixedly arranged in the bottom of mounting box (1), annular plate (23) is fixedly arranged between two fixed rings (21), heating plate (24) is equipped in the inside of annular plate (23), the heating plate (24) is arranged in contact with sampling bottle (2), heating device (25) is fixedly arranged on the top of heating plate (24), and heat preservation plate (26) is fixedly sleeved on the outer wall of annular plate (23).

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