Low-temperature bidirectional sampling probe

Abstract

The utility model discloses a low-temperature two-way sampling probe which comprises a sampling probe body inserted into an inner cavity of a sampling pipeline, temperature sensors are fixedly installed at the top and the bottom in the sampling probe body, a fixing sleeve is fixedly connected to the top of the surface of the sampling pipeline, and a lining pipe is fixedly connected to the bottom of the sampling probe body. A locking assembly is arranged on the surface of the fixing sleeve and comprises fixing lug plates welded to the two sides of the fixing sleeve, and inner cavities of the fixing lug plates are rotationally connected with limiting pull handles. Through the arrangement of the locking assembly, the lining pipe is stably clamped in the inner cavity of the fixed sleeve, so that the sampling probe is stably mounted in the inner cavity of the sampling pipeline, and finally, the sampling probe and the temperature sensor are matched for use, so that the inside and the outside of the inner cavity of the sampling pipeline are synchronously detected; therefore, the purposes of internal and external temperature synchronous detection, convenient disassembly and assembly and strong connection sealing performance can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of natural gas sampling, in particular to a low-temperature bidirectional sampling probe. Background Art

[0002] Natural gas is a general term for a mixed gas mainly composed of hydrocarbons that exists in underground rock reservoirs. It has a specific gravity of about 0.65, is lighter than air, and is colorless, odorless, and non-toxic. The main components of natural gas are alkanes, of which methane accounts for the vast majority. When sampling liquefied natural gas, a vacuum tube type cooling method is used from the sampling probe to the vaporizer to meet the supercooling requirements during sampling, ensuring that the collected samples maintain a minimum temperature difference during the transmission process.

[0003] The method of continuous sampling for detection requires the installation of temperature monitoring equipment to monitor and control the temperatures of the sample inlet and outlet respectively. At the same time, it is necessary to control the entry and interruption of the liquid sample according to the temperature change. The disassembly and assembly of the sampling probe is relatively cumbersome, which is inconvenient for the staff to operate. In order to further accurately measure the temperature difference between the inside and outside of the vaporizer sampling tube and facilitate the user to disassemble and assemble the sampling probe, it is necessary to provide a low-temperature two-way sampling probe, use a lever-type limit structure to limit and fix the two-way sampling probe, and use dual temperature sensors to detect the upper and lower ends of the liquid natural gas, so as to accurately measure the temperature difference between the upper and lower ends. Utility Model Content

[0004] The purpose of the utility model is to provide a low-temperature two-way sampling probe, which adopts a lever-type limiting structure to limit and fix the two-way sampling probe, and detects the upper and lower ends of liquid natural gas through dual temperature sensors, thereby accurately measuring the temperature difference between the upper and lower ends to solve the above technical problems.

[0005] The utility model solves the above-mentioned technical problems with a technical solution as follows: a low-temperature bidirectional sampling probe, comprising a sampling probe inserted in the inner cavity of a sampling pipe: temperature sensors are fixedly installed on the top and bottom of the sampling probe, a fixed sleeve is fixedly connected to the top of the surface of the sampling pipe, an inner liner is fixedly connected to the bottom of the sampling probe, a locking assembly is arranged on the surface of the fixed sleeve, the locking assembly comprises fixed ear plates welded on both sides of the fixed sleeve, the inner cavity of the fixed ear plates is rotatably connected to a limit lever, arc-shaped through holes matching the limit lever are provided on both sides of the inner cavity of the fixed sleeve, and an annular groove matching the arc-shaped through holes is provided on the surface of the inner liner.

[0006] Preferably, a sealing ring is sleeved on the top of the inner liner tube surface, and an annular groove matching the sealing ring is opened on the top of the fixed sleeve, and the sealing ring is engaged in the inner cavity of the annular groove.

[0007] Preferably, two fixing plates are welded to the bottom of both sides of the surface of the fixing sleeve, and the bottom end of the limit lever is engaged between two adjacent fixing plates.

[0008] Preferably, a limit pin is provided through the bottom of the front surface of the limit lever, and the fixing plate and the limit lever are plug-in connected via the limit pin.

[0009] Preferably, a sealing gasket is fixedly connected to the bottom of the inner liner tube, and the sealing gasket is tightly pressed between the inner liner tube and the sampling pipeline.

[0010] Preferably, positioning clamps are welded to the tops of the front and back surfaces of the liner tube, and positioning slots matching the positioning clamps are provided at the tops of the front and rear sides of the inner cavity of the fixed sleeve.

[0011] 1. The beneficial effects of the utility model are as follows: the utility model stably clamps the liner tube in the inner cavity of the fixed sleeve through the setting of the locking assembly, so that the sampling probe can be stably installed in the inner cavity of the sampling pipe, and finally, through the coordinated use of the sampling probe and the temperature sensor, the inside and outside of the inner cavity of the sampling pipe are synchronously detected, thereby achieving the purpose of synchronous detection of internal and external temperatures, easy disassembly and assembly, and strong connection sealing.

[0012] 2. The utility model plays a sealing role between the fixed sleeve and the inner liner tube through the coordinated use of the sealing ring and the annular groove, further improving the air tightness of the sampling probe after it is inserted into the inner cavity of the sampling pipeline.

[0013] 3. The utility model uses the fixed plate and the limit pin in coordination to limit the limit lever, so that the limit lever can be stably engaged between two adjacent fixed plates after rotation, thereby improving the stability of the liner tube and the sampling probe after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] in:

[0015] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model;

[0016] Figure 2 This is a front cross-sectional view of an embodiment of the utility model;

[0017] Figure 3 This is a three-dimensional schematic diagram of a sampling probe and an inner liner tube according to an embodiment of the utility model;

[0018] Figure 4 This is a three-dimensional exploded view of a fixed sleeve and a locking assembly according to an embodiment of the utility model.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Sampling pipeline, 2. Sampling probe, 3. Temperature sensor, 4. Fixed sleeve, 5. Lining tube, 6. Sealing ring, 7. Annular groove, 8. Locking assembly, 81. Fixed ear plate, 82. Limit lever, 83. Arc through hole, 84. Annular groove, 85. Fixed plate, 86. Limit pin, 9. Sealing gasket, 10. Positioning card plate, 11. Positioning card groove. DETAILED DESCRIPTION

[0021] Hereinafter, embodiments of the low-temperature bidirectional sampling probe of the present invention will be described with reference to the accompanying drawings.

[0022] Figure 1-4 The utility model shows a low-temperature two-way sampling probe of an embodiment of the utility model, including a sampling probe 2 inserted in the inner cavity of the sampling pipeline 1: the top and bottom of the sampling probe 2 are fixedly installed with a temperature sensor 3, the top of the surface of the sampling pipeline 1 is fixedly connected with a fixed sleeve 4, and the bottom of the sampling probe 2 is fixedly connected with an inner liner 5. The top of the surface of the inner liner 5 is sleeved with a sealing ring 6, and the top of the fixed sleeve 4 is provided with an annular groove 7 matched with the sealing ring 6. The sealing ring 6 is clamped in the inner cavity of the annular groove 7. Through the coordinated use of the sealing ring 6 and the annular groove 7, a sealing effect is played between the fixed sleeve 4 and the inner liner 5, and the airtightness of the sampling probe 2 after being inserted into the inner cavity of the sampling pipeline 1 is further improved. The bottom of the inner liner 5 is fixedly connected with a sealing gasket 9, and the sealing gasket 9 is tightly pressed between the inner liner 5 and the sampling pipeline 1. The top of the front surface and the back surface of the inner liner 5 are welded with a positioning card plate 10, and the top of the front side and the rear side of the inner cavity of the fixed sleeve 4 are provided with a positioning card plate 10 The surface of the fixed sleeve 4 is provided with a locking assembly 8, which includes a fixed ear plate 81 welded on both sides of the fixed sleeve 4, and the inner cavity of the fixed ear plate 81 is rotatably connected to a limit lever 82, and both sides of the inner cavity of the fixed sleeve 4 are provided with an arc through hole 83 adapted to the limit lever 82, and the surface of the liner tube 5 is provided with an annular groove 84 adapted to the arc through hole 83, and the bottom of both sides of the surface of the fixed sleeve 4 are welded with two fixing plates 85, and the limit lever 82 is connected to the fixed sleeve 4. The bottom end of the lever 82 is engaged between two adjacent fixed plates 85, and a limiting pin 86 is provided through the bottom of the front surface of the limiting lever 82. The fixed plate 85 and the limiting lever 82 are plugged and connected via the limiting pin 86. The coordinated use of the fixed plate 85 and the limiting pin 86 plays a limiting role on the limiting lever 82, so that the limiting lever 82 can be stably engaged between the two adjacent fixed plates 85 after rotation, thereby improving the stability of the liner tube 5 and the sampling probe 2 after installation.

[0023] Working principle: When the utility model is used, the user inserts the sampling probe 2 into the inner cavity of the sampling pipe 1, and makes the inner lining tube 5 snap into the inner cavity of the fixed sleeve 4, and then rotates the limit lever 82. After the limit lever 82 rotates 180 degrees, the top end of the limit lever 82 snaps into the inner cavity of the annular slot 84, which plays a role in limiting and fixing the inner lining tube 5. Then the bottom end of the limit lever 82 snaps between two adjacent fixing plates 85, and then the user inserts the limit pin 86 from the front side of the fixing plate 85 to the back side, so that the limit pin 86 penetrates to the back side of the limit lever 82, and the limit lever 82 is limited and fixed. At this time, the sampling probe 2 and the inner lining tube 5 are limited and fixed. Finally, the user can synchronously detect the temperature inside and outside the sampling pipe 1 through the two temperature sensors 3;

[0024] It should be noted that after the sampling probe 2 is inserted into the inner cavity of the sampling pipe 1, the sealing gasket 9 is pressed on the top of the sampling pipe 1, and the sealing ring 6 is engaged in the inner cavity of the annular groove 7, thereby improving the sealing between the sampling probe 2 and the sampling pipe 1.

[0025] To sum up: the low-temperature bidirectional sampling probe, through the setting of the locking assembly 8, stably engages the liner tube 5 in the inner cavity of the fixed sleeve 4, so that the sampling probe 2 can be stably installed in the inner cavity of the sampling pipe 1. Finally, through the coordinated use of the sampling probe 2 and the temperature sensor 3, the inside and outside of the inner cavity of the sampling pipe 1 are synchronously detected, thereby achieving the purpose of synchronous detection of internal and external temperatures, easy disassembly and assembly, and strong connection sealing.

Claims

1. A low temperature bidirectional sampling probe, characterized in that: The invention comprises a sampling probe (2) inserted into the inner cavity of a sampling pipe (1): a temperature sensor (3) is fixedly installed at the top and bottom of the sampling probe (2); a fixed sleeve (4) is fixedly connected to the top of the surface of the sampling pipe (1); an inner liner (5) is fixedly connected to the bottom of the sampling probe (2); a locking assembly (8) is arranged on the surface of the fixed sleeve (4); the locking assembly (8) comprises a fixed ear plate (81) welded to both sides of the fixed sleeve (4); a limit lever (82) is rotatably connected to the inner cavity of the fixed ear plate (81); arc-shaped through holes (83) matching the limit lever (82) are provided on both sides of the inner cavity of the fixed sleeve (4); and an annular groove (84) matching the arc-shaped through hole (83) is provided on the surface of the inner liner (5).

2. A low temperature bidirectional sampling probe according to claim 1, characterized in that: A sealing ring (6) is sleeved on the top of the surface of the inner lining tube (5), and an annular groove (7) matching the sealing ring (6) is opened on the top of the fixed sleeve (4), and the sealing ring (6) is engaged in the inner cavity of the annular groove (7).

3. A low temperature bidirectional sampling probe according to claim 2, characterized in that: Two fixing plates (85) are welded to the bottom of both sides of the surface of the fixing sleeve (4), and the bottom end of the limiting lever (82) is clamped between two adjacent fixing plates (85).

4. A low temperature bidirectional sampling probe according to claim 3, characterized in that: A limiting pin (86) is provided through the bottom of the front surface of the limiting lever (82), and the fixing plate (85) and the limiting lever (82) are plug-in connected via the limiting pin (86).

5. A low temperature bidirectional sampling probe according to claim 4, characterized in that: A sealing gasket (9) is fixedly connected to the bottom of the inner liner tube (5), and the sealing gasket (9) is tightly pressed between the inner liner tube (5) and the sampling pipeline (1).

6. A low temperature bidirectional sampling probe according to claim 5, characterized in that: Positioning clamps (10) are welded to the top of the front and back surfaces of the inner lining tube (5), and positioning slots (11) matching the positioning clamps (10) are provided at the top of the front and back sides of the inner cavity of the fixed sleeve (4).

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