CN217559564U - Automatic replacement and emptying device for medium-high pressure natural gas metering standard - Google Patents

Abstract

The utility model discloses an automatic evacuation device that replaces of well high pressure natural gas measurement standard, it relates to the automatic evacuation technical field that replaces of natural gas measurement pipeline, aims at solving current operation mode and relies on a large amount of manual operations, and the natural gas reaches safe numerical value in the judgement pipeline that can not be accurate, can't carry out the problem of effectual guarantee to staff's health, and its technical scheme main points are including the second pipeline, the one end of second pipeline is provided with the third pipeline, connect through the high-speed joint head between second pipeline and the third pipeline, fixed mounting has linkage switching-over valve and methane detector in the pipeline of second pipeline, linkage switching-over valve and methane detector all with outside controller electric connection. The effects of further ensuring the health of operators, improving the detection efficiency and reducing the working risk of the operators are achieved.

Description

Automatic replacement and emptying device for medium-high pressure natural gas metering standard

Technical Field

The utility model belongs to the technical field of the automatic evacuation technique that replaces of natural gas measurement pipeline and specifically relates to an automatic evacuation device that replaces of well high pressure natural gas measurement standard.

Background

At present, after the primary flow standard device is calibrated, the weighing container and the pipeline need to be disconnected, related weighing operation can be carried out, after the air inflation is finished, after the air source and the related pipeline valve are closed, the nitrogen gas replacement pipeline valve is manually opened, after the replacement is finished, the pipeline is opened, and then subsequent operation is carried out.

The existing operation mode depends on a large amount of manual operation, and whether the natural gas in the pipeline reaches a safe value or not can not be accurately judged, so that the health of workers can not be effectively guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can further guarantee that operating personnel's is healthy, improve detection efficiency, reduce the automatic emptying devices that replaces of well high-pressure natural gas measurement standard of operating personnel work risk.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides an automatic emptying devices that replaces of well high pressure natural gas measurement standard, includes the second pipeline, the one end of second pipeline is provided with the third pipeline, connect through the high-speed joint head between second pipeline and the third pipeline, fixed mounting has linkage switching-over valve and methane detector in the pipeline of second pipeline, linkage switching-over valve and methane detector all with outside controller electric connection, fixed mounting has the nitrogen gas intake pipe on the lateral wall of third pipeline, fixed mounting has two fourth electric ball valves in the pipeline of nitrogen gas intake pipe, the first blow-down pipe of fixedly connected with on the side surface of third pipeline, fixed mounting has two third electric ball valves in the pipeline of first blow-down pipe.

Through adopting above-mentioned technical scheme, come control linkage switching-over valve through outside controller, and then realize automatic switch's operation to this reduces staff's work load, can effectually provide the guarantee for staff's healthy.

Furthermore, the air outlet end of the third pipeline is fixedly connected with a weighing spherical tank, a gyroscope electronic scale is fixedly mounted on the bottom end face of the weighing spherical tank, and a third ball valve is fixedly mounted in the pipeline of the third pipeline.

Through adopting above-mentioned technical scheme, can utilize the direct weighing spherical tank of top electronic scale to carry out the weight measurement, can effectual improvement measuring convenience.

Furthermore, a second emptying pipe is fixedly connected to the outer surface of the weighing spherical tank, the second emptying pipe is provided with two air paths, two fourth ball valves are installed on one air path, a safety valve is installed on the other air path, and the two air paths share the same air inlet and the same air outlet.

Through adopting above-mentioned technical scheme, can utilize the relief valve in the second blow-down pipe to provide the guarantee for other structures in the device, avoid other structures to break down under high pressure.

Furthermore, a first ball valve is fixedly mounted in a pipeline of the second pipeline, and the linkage reversing valve is located between the first ball valve and the methane detector.

Through adopting above-mentioned technical scheme, can utilize first ball valve to carry out effectual management and control to the second pipeline.

Furthermore, a first pipeline is fixedly connected to an air inlet port of the second pipeline, and a critical flow venturi nozzle is installed in a pipeline of the first pipeline.

By adopting the technical scheme, the metering operation of the natural gas can be guaranteed by utilizing the critical flow venturi nozzle.

Furthermore, the two sides of the critical flow venturi nozzle are respectively provided with a first electric ball valve and a second electric ball valve, and the first electric ball valve and the second electric ball valve are both installed in the pipeline of the first pipeline.

Through adopting above-mentioned technical scheme, can utilize first electronic ball valve and the electronic ball valve of second to come the first pipeline of nimble convenient management and control.

To sum up, the utility model discloses a beneficial technological effect does:

1. the utility model discloses a nitrogen gas intake pipe, the setting of methane detector, can be before dismantling the third pipeline, close the third ball valve, open third electric ball valve simultaneously, then lead in partial second pipeline and third pipeline with nitrogen gas from the nitrogen gas intake pipe, discharge from first blow-down pipe again, utilize the methane detector to detect the methane concentration of replacement pipeline inside in this process, when reaching the setting value, can dismantle the high-speed connector, then carry out subsequent operation again, compare traditional operating method, the device can be better the healthy of protection operating personnel, and reduce staff's the amount of operation, improve work efficiency;

2. the utility model discloses a set up the inside gas of spherical tank of weighing after the symmetry that second blow-down pipe can be convenient and carry out the operation of blowing off, set up simultaneously that the relief valve on the second blow-down pipe can effectual symmetry spherical tank advances the protection of admitting air, the security performance of whole device obtains effectual guarantee.

Drawings

Fig. 1 is a working principle diagram of the present invention.

In the figure: 1. a first pipe; 2. a first electrically operated ball valve; 3. a critical flow venturi nozzle; 4. a nitrogen inlet pipe; 5. a second electrically operated ball valve; 6. a second conduit; 7. a first ball valve; 8. a linkage reversing valve; 9. a quick connector; 10. a third pipeline; 11. a first blow-down pipe; 12. a third electric ball valve; 13. a third ball valve; 14. weighing the spherical tank; 15. a gyro electronic scale; 16. a second emptying pipe; 17. a fourth ball valve; 18. a safety valve; 19. a methane detector; 20. and a fourth electric ball valve.

Detailed Description

The method of the present invention will be described in further detail with reference to the accompanying drawings.

Referring to the attached figure 1, the automatic replacement and emptying device for the medium and high pressure natural gas metering standard comprises a second pipeline 6, a third pipeline 10 is arranged at one end of the second pipeline 6, the second pipeline 6 is connected with the third pipeline 10 through a quick connector 9, a linkage reversing valve 8 and a methane detector 19 are fixedly arranged in the pipeline of the second pipeline 6, the linkage reversing valve 8 and the methane detector 19 are both electrically connected with an external controller, a nitrogen gas inlet pipe 4 is fixedly arranged on the side wall of the third pipeline 10, two fourth electric ball valves 20 are fixedly arranged in the pipeline of the nitrogen gas inlet pipe 4, a first emptying pipe 11 is fixedly connected to the side surface of the third pipeline 10, two third electric ball valves 12 are fixedly arranged in the pipeline of the first emptying pipe 11, and a first ball valve 7 is fixedly arranged in the pipeline of the second pipeline 6, linkage change valve 8 is located between first ball valve 7 and the methane detector 19, this is through nitrogen gas intake pipe 4, methane detector 19's setting, can be before dismantling third pipeline 10, close third ball valve 13, open third electronic ball valve 12 simultaneously, then in leading-in part second pipeline 6 and third pipeline 10 from nitrogen gas intake pipe 4 with nitrogen gas, discharge from first blow-down pipe 11 again, utilize methane detector 19 to detect the inside methane concentration of replacement pipeline at this in-process, when reaching the setting value, can dismantle quick-operation connector 9, then carry out subsequent operation again, traditional operation mode compares, the protection operating personnel's that the device can be better is healthy, and reduce staff's operating load, and improve work efficiency.

Referring to fig. 1, the air outlet end of the third pipeline 10 is fixedly connected with a weighing spherical tank 14, a gyro electronic scale 15 is fixedly mounted on the bottom end face of the weighing spherical tank 14, a third spherical valve 13 is fixedly mounted in a pipeline of the third pipeline 10, a second emptying pipe 16 is fixedly connected to the outer surface of the weighing spherical tank 14, the second emptying pipe 16 is provided with two air passages, two fourth ball valves 17 are mounted on one air passage, a safety valve 18 is mounted on the other air passage, the two air passages share the same air inlet and the same air outlet, the emptying operation of the internal gas of the weighing spherical tank 14 after weighing can be conveniently carried out by setting the second emptying pipe 16, the safety valve 18 arranged on the second emptying pipe 16 can effectively carry out air inlet protection on the weighing spherical tank 14, and the safety performance of the whole device is effectively guaranteed.

Referring to fig. 1, the inlet port of the second pipeline 6 is fixedly connected with the first pipeline 1, the critical flow venturi nozzle 3 is installed in the pipeline of the first pipeline 1, the two sides of the critical flow venturi nozzle 3 are respectively provided with the first electric ball valve 2 and the second electric ball valve 5, the first electric ball valve 2 and the second electric ball valve 5 are both installed in the pipeline of the first pipeline 1, so that stable transportation of natural gas can be effectively guaranteed, and flexible control can be performed on a transportation pipeline.

The working principle is as follows: when the device is used, the device is firstly installed at a specified position, then the third ball valve 13 is opened, at the moment, natural gas in a pipeline can be led into the weighing spherical tank 14, in the process, the safety valve 18 installed on the second emptying pipe 16 can provide effective protection for the weighing operation of the weighing spherical tank 14, when the third pipeline 10 needs to be disassembled, the third ball valve 13 is closed firstly, and meanwhile, the third electric ball valve 12 is opened, so that the first emptying pipe 11 is in a unblocked state, then nitrogen in the nitrogen inlet pipe 4 is led into a part of the second pipeline 6 and the third pipeline 10 and then is discharged from the first emptying pipe 11, in the process, the methane concentration in the replacement pipeline is detected by using the methane detector 19, when a set value is reached, the quick electronic scale 9 can be disassembled, and then the subsequent weighing operation can be carried out by using the gyroscope 15.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (6)

1. The utility model provides a well high pressure natural gas measurement standard automatic replacement emptying devices, includes second pipeline (6), its characterized in that: the one end of second pipeline (6) is provided with third pipeline (10), connect through high-speed joint head (9) between second pipeline (6) and third pipeline (10), fixed mounting has linkage switching-over valve (8) and methane detector (19) in the pipeline of second pipeline (6), linkage switching-over valve (8) and methane detector (19) all with outside controller electric connection, fixed mounting has nitrogen gas intake pipe (4) on the lateral wall of third pipeline (10), fixed mounting has two fourth electric ball valve (20) in the pipeline of nitrogen gas intake pipe (4), first blow-down pipe (11) of fixedly connected with on the side surface of third pipeline (10), fixed mounting has two third electric ball valve (12) in the pipeline of first blow-down pipe (11).

2. The automatic replacement emptying device for the medium-high pressure natural gas metering standard according to claim 1, characterized in that: the air outlet end of the third pipeline (10) is fixedly connected with a weighing spherical tank (14), a gyroscope electronic scale (15) is fixedly mounted on the bottom end face of the weighing spherical tank (14), and a third ball valve (13) is fixedly mounted in a pipeline of the third pipeline (10).

3. The automatic replacement emptying device for the medium-high pressure natural gas metering standard according to claim 2, characterized in that: the weighing device is characterized in that a second emptying pipe (16) is fixedly connected to the outer surface of the weighing spherical tank (14), two air paths are arranged on the second emptying pipe (16), two fourth ball valves (17) are installed on one air path, a safety valve (18) is installed on the other air path, and the two air paths share the same air inlet and the same air outlet.

4. The automatic replacement emptying device for the medium-high pressure natural gas metering standard according to claim 1, characterized in that: a first ball valve (7) is fixedly mounted in a pipeline of the second pipeline (6), and the linkage reversing valve (8) is located between the first ball valve (7) and the methane detector (19).

5. The automatic replacement emptying device for the medium-high pressure natural gas metering standard according to claim 1, characterized in that: the air inlet port of the second pipeline (6) is fixedly connected with a first pipeline (1), and a critical flow Venturi nozzle (3) is installed in the pipeline of the first pipeline (1).

6. The automatic replacing and emptying device for the metering standard of the medium-high pressure natural gas as claimed in claim 5, characterized in that: the two sides of the critical flow Venturi nozzle (3) are respectively provided with a first electric ball valve (2) and a second electric ball valve (5), and the first electric ball valve (2) and the second electric ball valve (5) are both installed in a pipeline of the first pipeline (1).

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