CN212645985U - Low-temperature fluid loading and unloading arm rotary joint gas leakage detection device - Google Patents
Low-temperature fluid loading and unloading arm rotary joint gas leakage detection device Download PDFInfo
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- CN212645985U CN212645985U CN202021922782.1U CN202021922782U CN212645985U CN 212645985 U CN212645985 U CN 212645985U CN 202021922782 U CN202021922782 U CN 202021922782U CN 212645985 U CN212645985 U CN 212645985U
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Abstract
A gas leakage detection device for a rotary joint of a low-temperature fluid loading and unloading arm relates to the technical field of fluid loading and unloading equipment, in particular to a device capable of detecting whether natural gas at the rotary joint of the LNG low-temperature loading and unloading arm leaks or not. The valve body is provided with a cavity with openings at two ends, and a detection plate is arranged in the cavity of the valve body; the detection plate is provided with a detection through hole and a gas outlet blind hole respectively, the detection through hole is communicated with the gas outlet blind hole through a communication hole, a natural gas detection sensor is arranged in the detection through hole, and the communication hole is close to the detection end of the natural gas detection sensor; the detection plate is provided with a wire hole corresponding to the detection through hole, the valve body is provided with a wire outlet hole corresponding to the wire hole, the inner end of the wire hole is communicated with the detection through hole, and the other end of the wire hole is communicated with the wire outlet hole. The natural gas detection sensor can detect whether the natural gas is mixed in the nitrogen gas flow, so that the detection result is more accurate and reasonable.
Description
Technical Field
The utility model relates to a fluid handling equipment technical field, especially a can detect device whether LNG low temperature loading and unloading arm rotary joint department natural gas leaks.
Background
The low-temperature rotary joint is a sealed rotary connector for conveying low-temperature media in a 360-degree rotary mode. The low-temperature rotary joint is mainly used on an LNG loading arm, the joint of an inner arm and an outer arm of the loading arm can rotate, however, due to the sealing problem at the low-temperature rotary joint, natural gas is easy to leak into a nitrogen gas flow channel of the low-temperature rotary joint, the existing method is that a flowmeter detection device is arranged at an air inlet and outlet hole of the low-temperature rotary joint, whether the low-temperature rotary joint leaks or not is detected through the change of the gas flow of the inlet and outlet, but the detection mode has detection errors and very low detection precision, and if the sealing performance of the low-temperature rotary joint is poor, nitrogen gas leaks, whether the natural gas of the LNG loading arm leaks or not cannot be accurately detected.
Disclosure of Invention
An object of the utility model is to above prior art not enough, provide a low-temperature fluid loading and unloading arm rotary joint gas leakage detection device, reach and detect the sensor through using the natural gas, improve the purpose that detects the precision.
The utility model provides a gaseous leakage detection device of low temperature fluid loading and unloading arm rotary joint, its characterized in that: the natural gas detection valve comprises a valve body, a detection plate and a natural gas detection sensor, wherein the valve body is provided with a cavity with openings at two ends, and the detection plate is arranged in the cavity of the valve body; the detection plate is provided with a detection through hole and a gas outlet blind hole respectively, the detection through hole is communicated with the gas outlet blind hole through a communication hole, a natural gas detection sensor is arranged in the detection through hole, and the communication hole is close to the detection end of the natural gas detection sensor; the detection plate is provided with a wire hole corresponding to the detection through hole, the valve body is provided with a wire outlet hole corresponding to the wire hole, the inner end of the wire hole is communicated with the detection through hole, and the other end of the wire hole is communicated with the wire outlet hole.
The two ends of the valve body are respectively connected with the mounting joint, and the outer side of the mounting joint is provided with external threads.
The detection through hole is a stepped through hole, a natural gas detection sensor is arranged in the large-diameter hole of the stepped through hole, a sealing ring is arranged between the natural gas detection sensor and the inner wall of the large-diameter hole, a gas baffle plate is arranged in the small-diameter hole of the stepped through hole, and the gas baffle plate is arranged on the inner end wall of the small-diameter hole.
One end of the detection plate is fixedly connected with the cover plate, the cover plate is provided with a through hole which is coaxial with the air outlet blind hole of the detection plate, and a compression plug is arranged between the natural gas detection sensor and the cover plate.
The outer wall of the valve body is provided with a wire arranging ring, the wire arranging ring is positioned at the outer end of the wire outlet position of the valve body, the inner wall of the wire arranging ring is provided with an annular wire arranging groove, the outer wall of the wire arranging ring is provided with a wire arranging hole, and the wire arranging hole is communicated with the annular wire arranging groove.
Compared with the prior art, the utility model discloses following outstanding beneficial effect has:
be equipped with a plurality of detection through-holes on this device's the pick-up plate, the natural gas detection sensor is installed to the one end that detects the through-hole, and when the nitrogen gas air current passed through the natural gas detection sensor, whether the natural gas detection sensor sneaked into in can detecting the nitrogen gas air current, made the testing result more accurate reasonable.
Drawings
Fig. 1 is a schematic diagram of the internal structure of the present invention.
Fig. 2 is a schematic structural view of the detection board portion of the present invention.
Fig. 3 is a schematic structural view of the plug portion of the present invention.
Detailed Description
The invention is further described with reference to the drawings and the detailed description. For convenience of description, the central position of the detection plate 3 is taken as an inner end, and the outer side is taken as an outer end.
As shown in fig. 1-3, the utility model discloses a valve body 2, erection joint 1, pick-up plate 3 and natural gas detection sensor 9.
The detection valve is characterized in that the valve body 2 is provided with a cavity with two open ends, the two ends of the valve body 2 are respectively connected with the mounting joint 1, the outer side of the mounting joint 1 is provided with an external thread, a detection plate 3 is arranged in the cavity of the valve body 2, and the peripheral outer wall of the detection plate 3 is fixedly connected with the inner wall of the cavity of the valve body 2.
The detection plate 3 is provided with a plurality of detection through holes 6 which are uniformly distributed in a circumferential shape, the center position of the detection plate 3 is provided with an air outlet blind hole 10, the detection through holes 6 are communicated with the air outlet blind hole 10 through communication holes 12, and the communication holes 12 are close to the detection end of the natural gas detection sensor 9.
Detect through-hole 6 and be the notch cuttype through-hole, install natural gas detection sensor 9 in the major diameter hole of notch cuttype through-hole, be equipped with sealing washer 8 between natural gas detection sensor 9 and the downthehole inner wall of major diameter, install gas baffle 7 in the minor diameter hole of notch cuttype through-hole, gas baffle 7 is installed on the interior end wall in minor diameter hole, shelter from the first half of minor diameter hole, make the air current can only flow in by the outer tip portion of being close to in minor diameter hole, the natural gas detection sensor 9 position of flowing through after, get into the venthole by intercommunicating pore 12 again, make the air current more abundant with natural gas detection sensor 9's contact.
One end of the detection plate 3 is fixedly connected with the cover plate 11, a through hole is formed in the center of the cover plate 11, the through hole of the cover plate 11 and the air outlet blind hole 10 of the detection plate 3 are coaxial, a compression plug 5 is arranged in the large-diameter hole of the stepped through hole, one end of the compression plug 5 abuts against one end of the natural gas detection sensor 9, the other end of the compression plug 5 abuts against the cover plate 11, the natural gas detection sensor 9 is compressed, an axial through hole is formed in the axis of the compression plug 5, a radial through hole is formed in the outer wall of the compression plug 5, and the radial through hole of the compression plug 5 is.
The detection device is characterized in that a wire hole 13 corresponding to the detection through hole 6 is arranged on the detection plate 3, a plurality of wire outlets corresponding to the wire hole 13 are arranged on the valve body 2, the inner end of the wire hole 13 is communicated with the detection through hole 6, the other end of the wire hole is communicated with the wire hole, a wire arranging ring 4 is fixedly arranged on the outer wall of the valve body 2, the wire arranging ring 4 is positioned at the outer end of the position of the wire outlet of the valve body 2, an annular wire arranging groove is arranged on the inner wall of the wire arranging ring 4, a wire arranging hole is arranged on the outer wall of the wire arranging ring and communicated with the annular wire arranging groove, a wire of the natural gas detection sensor 9 sequentially penetrates through the axial through hole and the radial through hole of the compression plug 5, the wire hole 13 of the detection plate 3, the wire outlet of the valve body 2, the annular.
The operation flow is as follows: when the device is used, the device is connected with the gas outlet of the low-temperature rotary joint through the connecting valve, and when nitrogen gas flow sequentially passes through the cavity at one end of the valve body 2, the detection through hole 6, the communicating hole 12, the gas outlet blind hole 10 and the cavity at the other end of the valve body 2, the nitrogen gas flow is discharged. When the nitrogen gas air current contacts with natural gas detection sensor 9 in detecting through-hole 6, if sneak into the natural gas in the nitrogen gas air current, the alarm reports to the police, reminds staff low temperature rotary joint to take place to leak.
It should be noted that while the invention has been described in detail with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various obvious changes can be made therein without departing from the spirit and scope of the invention.
Claims (5)
1. A low-temperature fluid loading and unloading arm rotary joint gas leakage detection device is characterized in that: the natural gas detection valve comprises a valve body (2), a detection plate (3) and a natural gas detection sensor (9), wherein the valve body (2) is provided with a cavity with openings at two ends, and the detection plate (3) is arranged in the cavity of the valve body (2); the detection plate (3) is respectively provided with a detection through hole (6) and an air outlet blind hole (10), the detection through hole (6) is communicated with the air outlet blind hole (10) through a communication hole (12), a natural gas detection sensor (9) is installed in the detection through hole (6), and the communication hole (12) is close to the detection end of the natural gas detection sensor (9); the detection plate (3) is provided with a wire guide hole (13) corresponding to the detection through hole (6), the valve body (2) is provided with a wire outlet hole corresponding to the wire guide hole (13), the inner end of the wire guide hole (13) is communicated with the detection through hole (6), and the other end of the wire guide hole is communicated with the wire outlet hole.
2. The cryogenic fluid handling arm swivel joint gas leak detection apparatus of claim 1, wherein: two ends of the valve body (2) are respectively connected with the mounting joint (1), and external threads are arranged on the outer side of the mounting joint (1).
3. The cryogenic fluid handling arm swivel joint gas leak detection apparatus of claim 1, wherein: detect through-hole (6) and be the notch cuttype through-hole, install natural gas detection sensor (9) in the major diameter hole of notch cuttype through-hole, be equipped with between natural gas detection sensor (9) and the downthehole inner wall of major diameter and seal circle (8), install gas baffle (7) in the minor diameter hole of notch cuttype through-hole, gas baffle (7) are installed on the inner wall in minor diameter hole.
4. The cryogenic fluid handling arm swivel joint gas leak detection apparatus of claim 1, wherein: one end of the detection plate (3) is fixedly connected with a cover plate (11), a through hole which is coaxial with the air outlet blind hole (10) of the detection plate (3) is arranged on the cover plate (11), and a compression plug (5) is arranged between the natural gas detection sensor (9) and the cover plate (11).
5. The cryogenic fluid handling arm swivel joint gas leak detection apparatus of claim 1, wherein: the outer wall of the valve body (2) is provided with a whole wire ring (4), the whole wire ring (4) is positioned at the outer end of the wire outlet position of the valve body (2), the inner wall of the whole wire ring (4) is provided with an annular whole wire groove, the outer wall is provided with a wire arranging hole, and the wire arranging hole is communicated with the annular whole wire groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021922782.1U CN212645985U (en) | 2020-09-07 | 2020-09-07 | Low-temperature fluid loading and unloading arm rotary joint gas leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021922782.1U CN212645985U (en) | 2020-09-07 | 2020-09-07 | Low-temperature fluid loading and unloading arm rotary joint gas leakage detection device |
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| Publication Number | Publication Date |
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| CN212645985U true CN212645985U (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021922782.1U Active CN212645985U (en) | 2020-09-07 | 2020-09-07 | Low-temperature fluid loading and unloading arm rotary joint gas leakage detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116773098A (en) * | 2023-08-24 | 2023-09-19 | 山东冠卓重工科技有限公司 | Gas leakage detection equipment of loading and unloading arm rotary joint |
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2020
- 2020-09-07 CN CN202021922782.1U patent/CN212645985U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116773098A (en) * | 2023-08-24 | 2023-09-19 | 山东冠卓重工科技有限公司 | Gas leakage detection equipment of loading and unloading arm rotary joint |
| CN116773098B (en) * | 2023-08-24 | 2023-11-03 | 山东冠卓重工科技有限公司 | Gas leakage detection equipment of loading and unloading arm rotary joint |
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