CN214881322U

CN214881322U - Natural gas hydrogen membrane separator

Info

Publication number: CN214881322U
Application number: CN202022773354.3U
Authority: CN
Inventors: 李冬林; 王秋岩; 黄慧
Original assignee: Sinopec Oilfield Service Corp; Sinopec Zhongyuan Petroleum Engineering Design Co Ltd
Current assignee: Sinopec Oilfield Service Corp; Sinopec Zhongyuan Petroleum Engineering Design Co Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-11-26
Anticipated expiration: 2030-11-26

Abstract

The utility model relates to a gas separation device field, concretely relates to natural gas hydrogen membrane separator. The improved hydrogen separation device comprises a shell, a lower disc and an upper disc are fixed in the shell, an air hole is formed in the lower disc, two vertical hydrogen separation membranes are fixed on the lower disc, a hydrogen outlet pipe communicated with the inside of each hydrogen separation membrane is fixed on the lower disc, a lifting sleeve concentric with each hydrogen separation membrane is connected to the upper disc in a sliding sealing mode, the lower end of the lifting sleeve is in sealing contact with the upper end of the lower disc, a fixing rod is fixed on a top plate of the shell, a piston is fixed at the lower end of the fixing rod, an inner ring is fixed on the inner edge of the upper end of the lifting sleeve, the inner edge of the inner ring is in sliding sealing contact with the outer edge of the piston, a wedge block is fixed on the front side of the lifting sleeve, and a telescopic cylinder is fixed on the side wall of the shell on one side of the lifting sleeve. The utility model discloses, can change the handling capacity of separator as required, when the gas separation handling capacity is less, can seal a hydrogen separation membrane, thereby reduce its operating time and improve its life.

Description

Natural gas hydrogen membrane separator

Technical Field

The utility model relates to a gas separation device field, concretely relates to natural gas hydrogen membrane separator.

Background

With the increasing requirements on energy conservation and emission reduction, hydrogen energy has been greatly regarded as an ultimate clean energy source in recent years. Due to the low hydrogen density, the costs of vehicle transportation and separate pipeline construction are high. The natural gas pipeline is used for conveying the mixture of the natural gas and the hydrogen, and the hydrogen and the natural gas are separated at the pipeline conveying terminal, so that the method is a good way for solving the problem of high hydrogen conveying cost. However, when the gas is collected, the hydrogen gas and the natural gas need to be separated, and the conventional separator cannot increase the treatment capacity as required, and has a large overall volume.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a can change the handling capacity of separator as required, whole small, occupation space is little, can seal a hydrogen separation membrane when gas separation handling capacity is less, thereby reduces its operating time and improves its life's natural gas hydrogen membrane separator.

In order to realize the purpose, the utility model provides a technical scheme is:

a natural gas hydrogen membrane separator comprises a shell, an exhaust pipe and an air inlet pipe which are communicated with the shell are respectively fixed at the upper end and the lower end of the shell, an electromagnetic valve is installed on the exhaust pipe, a lower disc and an upper disc are fixed in the shell, an air hole is formed in the lower disc, two vertical hydrogen separation membranes are fixed on the lower disc, a hydrogen outlet pipe communicated with the inside of the hydrogen separation membranes is fixed on the lower disc, the hydrogen outlet pipe is communicated with a communication pipe, one end of the communication pipe extends to the outside of the shell, a lifting sleeve concentric with the hydrogen separation membranes is connected on the upper disc in a sliding and sealing mode, the lifting sleeve penetrates through the upper disc, the hydrogen separation membranes are located in the lifting sleeve, the lower end of the lifting sleeve is in sealing contact with the upper end of the lower disc, a fixing rod concentric with the lifting sleeve is fixed on a top plate of the shell, a piston is fixed at the lower end of the fixing rod, an inner ring is fixed at the inner edge of the upper end of the lifting sleeve, the inner ring is in sliding and sealing contact with the outer edge of the piston, and a wedge block is fixed at the front side of the lifting sleeve, a telescopic cylinder is fixed on the side wall of the shell at one side of the lifting sleeve, a telescopic rod of the telescopic cylinder is in sealing contact with the side wall of the shell, a mandril is fixed on the telescopic rod of the telescopic cylinder, the end part of the mandril is in contact with the inclined surface of the wedge block, the inclined surface of the wedge block inclines downwards towards one end of the center of the shell, a righting device for preventing the lifting sleeve from rotating is arranged in the shell at the right side of the lifting sleeve,

the righting device comprises a vertical polished rod which penetrates through the upper disc and the lower disc and is in sliding sealing connection with the upper disc and the lower disc, the lifting sleeve is fixedly connected with the polished rod, a stop ring is fixed on the polished rod, and a spring is sleeved on the polished rod between the stop ring and the upper disc.

Specifically, a sealing ring is fixed at the lower end of the lifting sleeve, and the lower end of the lifting sleeve is in sealing contact with the upper end of the lower disc through the sealing ring.

Specifically, a gap is arranged between the inner edge of the lifting sleeve and the outer edge of the hydrogen separation membrane.

Specifically, the lifting sleeve is fixedly connected with the polish rod through a connecting rod.

Specifically, the electromagnetic valve is a pressure maintaining electromagnetic valve.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses, simple structure, convenient operation can change the handling capacity of separator as required, and whole small, occupation space is little, and when the gas separation handling capacity is less, can seal a hydrogen separation membrane, thereby reduce its operating time and improve its life, can reduce the work load of maintaining in follow-up maintenance process, improve maintenance efficiency.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

As shown in fig. 1, the natural gas hydrogen membrane separator comprises a housing 1, wherein an exhaust pipe 17 and an intake pipe 2 which are communicated with the housing 1 are respectively fixed at the upper end and the lower end of the housing 1, an electromagnetic valve 18 is installed on the exhaust pipe 17, and the electromagnetic valve 18 is a pressure maintaining electromagnetic valve.

Casing 1 internal fixation has lower wall 3 and hanging wall 13, has seted up gas pocket 4 on the lower wall 3, is fixed with two vertical hydrogen separation membranes 12 on the lower wall 3, be fixed with on the lower wall 3 with the inside hydrogen exit tube 5 that communicates of hydrogen separation membrane 12, hydrogen exit tube 5 and communicating pipe 6 intercommunication, 6 one end of communicating pipe extend to the casing 1 outside, sliding seal connects with the concentric lift cover 10 with hydrogen separation membrane 12 on hanging wall 13, lift cover 10 runs through hanging wall 13, hydrogen separation membrane 12 is located lift cover 10, be provided with the clearance between lift cover 10 inner edge and the hydrogen separation membrane 12 outer fringe. The lower end of the lifting sleeve 10 is fixed with a sealing ring 11, the lower end of the lifting sleeve 10 is in sealing contact with the upper end of the lower disc 3 through the sealing ring 11, a fixing rod 16 concentric with the lifting sleeve 10 is fixed on a top plate of the shell 1, a piston 15 is fixed at the lower end of the fixing rod 16, an inner ring 14 is fixed at the inner edge of the upper end of the lifting sleeve 10, the inner edge of the inner ring 14 is in sliding sealing contact with the outer edge of the piston 15, a wedge block 9 is fixed on the front side of the lifting sleeve 10, a telescopic cylinder 7 is fixed on the side wall of the shell 1 on one side of the lifting sleeve 10, a telescopic rod of the telescopic cylinder 7 is in sealing contact with the side wall of the shell 1, a mandril 8 is fixed on the telescopic rod of the telescopic cylinder 7, the end part of the mandril 8 is in contact with an inclined plane of the wedge block 9, the inclined plane of the wedge block 9 inclines downwards towards one end of the center of the shell 1, and a centering device for preventing the lifting sleeve 10 from rotating is arranged in the shell 1 on the right side of the lifting sleeve 10.

The righting device comprises a vertical polished rod 19 which penetrates through the upper disc 13 and the lower disc 3 and is in sliding sealing connection with the upper disc 13 and the lower disc 3, a lifting sleeve 10 is fixedly connected with the polished rod 19, the lifting sleeve 10 is fixedly connected with the polished rod 19 through a connecting rod 22, a stop ring 20 is fixed on the polished rod 19, and a spring 21 is sleeved on the polished rod 19 between the stop ring 20 and the upper disc 13.

When the gas separation treatment capacity is large, the telescopic cylinder 7 is started, so that the telescopic rod of the telescopic cylinder 7 extends, the telescopic rod of the telescopic cylinder 7 drives the ejector rod 8 to move towards the inner direction of the shell 1, under the guiding action of the inclined plane of the wedge block 9, the lifting sleeve 10 ascends, simultaneously the polish rod 19 ascends, the spring 21 is compressed, the lower end of the lifting sleeve 10 is separated from the upper end of the lower disc 3, the piston 15 is separated from the inner ring 14, at this time, the mixed gas of hydrogen and natural gas entering the housing 1 from the gas inlet pipe 2 enters the housing 1 above the lower disc 3 through the gas holes 4, under the action of the pressure difference between the outside and the inside of the hydrogen separation membrane 12, hydrogen enters the inside of the hydrogen separation membrane 12 and then enters the communicating pipe 6 through the hydrogen outlet pipe to be discharged and collected, the electromagnetic valve 18 works after reaching the set working pressure, and is opened at intervals for a set time so that the natural gas from which hydrogen is removed is discharged from the exhaust pipe 17 and collected.

One hydrogen separation membrane 12 can be set as a common membrane, the other hydrogen separation membrane is set as a standby membrane, the common membrane works when the treatment capacity is small, and the standby membrane is sealed by the lifting sleeve 10, so that the working time of the standby membrane participating in separation is reduced. The utility model discloses, simple structure, convenient operation can change the handling capacity of separator as required, and whole small, occupation space is little, can seal a hydrogen separation membrane 12 when gas separation handling capacity is less, thereby reduces its operating time and improves its life, only needs to change or maintain membrane commonly used in follow-up maintenance process, can reduce the work load of maintaining, improves maintenance efficiency.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A natural gas hydrogen membrane separator comprises a shell, an exhaust pipe and an air inlet pipe which are communicated with the shell are respectively fixed at the upper end and the lower end of the shell, and an electromagnetic valve is installed on the exhaust pipe, and is characterized in that a lower disc and an upper disc are fixed in the shell, an air hole is formed in the lower disc, two vertical hydrogen separation membranes are fixed on the lower disc, a hydrogen outlet pipe communicated with the inside of the hydrogen separation membrane is fixed on the lower disc, the hydrogen outlet pipe is communicated with a communication pipe, one end of the communication pipe extends to the outside of the shell, a lifting sleeve concentric with the hydrogen separation membrane is connected on the upper disc in a sliding and sealing manner, the lifting sleeve penetrates through the upper disc, the hydrogen separation membrane is positioned in the lifting sleeve, the lower end of the lifting sleeve is in sealing contact with the upper end of the lower disc, a fixed rod concentric with the lifting sleeve is fixed on a top plate of the shell, a piston is fixed at the lower end of the fixed on an inner edge of the upper end of the lifting sleeve, the inner edge of the inner ring is in sliding and sealing contact with the outer edge of the piston, a wedge block is fixed on the front side of the lifting sleeve, a telescopic cylinder is fixed on the side wall of the shell on one side of the lifting sleeve, a telescopic rod of the telescopic cylinder is in sealing contact with the side wall of the shell, a mandril is fixed on the telescopic rod of the telescopic cylinder, the end part of the mandril is in contact with an inclined plane of the wedge block, the inclined plane of the wedge block inclines downwards towards one end of the center of the shell, a righting device for preventing the lifting sleeve from rotating is arranged in the shell on the right side of the lifting sleeve,

2. The membrane separator for natural gas and hydrogen as claimed in claim 1, wherein the lower end of the lifting sleeve is fixed with a sealing ring, and the lower end of the lifting sleeve is in sealing contact with the upper end of the lower disc through the sealing ring.

3. The membrane separator for hydrogen and natural gas as claimed in claim 1, wherein a gap is provided between the inner edge of the lifting sleeve and the outer edge of the hydrogen separation membrane.

4. The membrane separator for natural gas and hydrogen as claimed in claim 1, wherein the lifting sleeve is fixedly connected with the polish rod through a connecting rod.

5. The membrane separator for natural gas and hydrogen of claim 1, wherein the solenoid valve is a pressure maintaining solenoid valve.