CN212960046U

CN212960046U - Automatic pressure-measuring cut-off valve for gas pipeline

Info

Publication number: CN212960046U
Application number: CN202021772719.4U
Authority: CN
Inventors: 陈翠丽; 刘豆
Original assignee: Tianjin Rongxin Valve Manufacturing Co ltd
Current assignee: Tianjin Rongxin Valve Manufacturing Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-04-13
Anticipated expiration: 2030-08-24

Abstract

The utility model relates to a trip valve technical field specifically is a but measured pressure formula automatic cutout valve for gas pipeline, including the valve body, the top of stating the valve body is equipped with protects a section of thick bamboo, and has seted up the inlet port on one side of the valve body, the venthole has been seted up to the opposite side of valve body, and is equipped with the baffle between inlet port and the venthole, the inner wall connection of baffle and inlet port, and baffle and inlet port junction have seted up the intercommunicating pore, it has the pull rod to peg graft in the intercommunicating pore, and the terminal welding of pull. This device can carry out the closure automatically under the circumstances that pipeline internal pressure is higher than normal level thereby prevent that the gas pipeline from receiving the large tracts of land damage, protection property safety, and gas pressure is too high to be greater than first spring bounce, and pressure direct action is at the diaphragm, with diaphragm jack-up, and the diaphragm then drives the gomphosis board and rises, thereby the gomphosis board drives the end cap through the pull rod and rises and make the end cap block up the intercommunicating pore rising at the in-process that rises, cuts off inlet port and venthole.

Description

Automatic pressure-measuring cut-off valve for gas pipeline

Technical Field

The utility model relates to a trip valve technical field specifically is a can measure pressure formula automatic cutout valve for gas pipeline.

Background

The cut-off valve is one of the executing mechanisms in the automatic system, consists of a multi-spring pneumatic membrane executing mechanism or a floating piston executing mechanism and a regulating valve, receives the signal of a regulating instrument and controls the cut-off, the connection or the switching of fluid in a process pipeline. The pneumatic cut-off valve has the characteristics of simple structure, sensitive response, reliable action and the like, can be widely applied to industrial production departments such as petroleum, chemical industry, metallurgy and the like, the air source of the pneumatic cut-off valve requires filtered compressed air, the medium flowing through the valve body is liquid and gas without impurities and particles, and a single seat, a sleeve and a three-way cut-off valve can be selected according to the allowable pressure difference condition, the characteristics of the medium and the requirements of a process pipeline.

The existing stop valve is only used for cutting off and does not have a mechanism capable of detecting air pressure, when the air pressure in one section of pipeline reaches a dangerous value, a worker does not know the dangerous value, meanwhile, the stop valve needs to be manually restored after automatic cutting off, but the restoring mechanism is exposed outside and is easily mistakenly touched. Accordingly, those skilled in the art have provided a pressure measurable automatic shut-off valve for a gas pipeline to solve the problems set forth in the background art described above.

Disclosure of Invention

An object of the utility model is to provide a can measure pressure formula automatic cutout valve for gas pipeline to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a measurable pressure formula automatic cutout valve for gas pipeline, includes the valve body, states the top of valve body and is equipped with and protects a section of thick bamboo, and valve body one side has seted up the inlet port, the venthole has been seted up to the opposite side of valve body, and is equipped with the baffle between inlet port and the venthole, the inner wall connection of baffle and inlet port, and baffle and inlet port junction have seted up the intercommunicating pore, the downthehole pull rod that has pegged graft of intercommunication, and the end welding of pull rod has the end cap, the top of pull rod has cup jointed the gomphosis board, and gomphosis board and valve body inner wall connection, be equipped with the diaphragm in the go.

As a further aspect of the present invention: the upper end of the pull rod penetrates through the embedded plate and extends into the protective cylinder, the upper end of the pull rod is sleeved with the first spring, and sealing pieces are arranged at the joints of the embedded plate, the partition plate and the inner wall of the air inlet.

As a further aspect of the present invention: the stand has been cup jointed to the upper end of first spring, and the top welding of stand has the stopper, the length of stopper is greater than the diameter of first spring, the top center welding of stopper has the regulation pole, and adjusts the pole and transversely pegs graft and have the gim peg.

As a further aspect of the present invention: the top of the protective cylinder is sleeved with a sealing cover, the inner diameter of the sealing cover is larger than the outer diameter of the protective cylinder, the length of the sealing cover is one third of the length of the protective cylinder, and a chain plate is fixedly mounted at the lower end of one side of the sealing cover.

As a further aspect of the present invention: the anchor rod is connected to the other side of the sealing cover through a bearing, the supporting rod is connected to the top of the anchor rod through a bearing, the anchor rod is divided into two screw rods and a threaded sleeve, the screw rods are respectively sleeved at two ends of the threaded sleeve, and a connecting sheet is welded to the side face of the sealing cover.

As a further aspect of the present invention: the supporting rod is connected with the upper end of the connecting piece from bottom to top in a pin mode, the tail portion of the supporting rod is connected with a second spring, a lock groove is formed in the outer surface of the protective cylinder and does not penetrate through the inner wall of the protective cylinder, and the upper end of the supporting rod is embedded in the lock groove.

As a further aspect of the present invention: an air passage is formed in the valve body and above the air outlet hole, and the top of the air passage is connected with a barometer.

Compared with the prior art, the beneficial effects of the utility model are that: the device can automatically close under the condition that the air pressure in the pipeline is higher than the normal level so as to prevent the gas pipeline from being damaged in a large area and protect property safety, the gas enters the valve body from the gas inlet under the normal pressure and is directly discharged from the gas outlet, the plug always descends due to the rebound force of the first spring, the valve body cannot interfere the gas circulation, once the gas pressure is higher than the rebound force of the first spring, the pressure directly acts on the diaphragm to jack the diaphragm, the diaphragm drives the embedded plate to ascend, the embedded plate drives the plug to ascend through the pull rod in the ascending process so as to enable the plug to block the communication hole and separate the gas inlet and the gas outlet, at the moment, the valve body can be permanently sealed manually by fixing the bolt locking adjusting rod, in order to ensure the safety of the locking mechanism, the device covers the sealing cover on the top of the protective cylinder for protecting the locking mechanism, and, the inclined angle of the abutting rod is controlled by rotating the threaded sleeve on the anchor rod, so that the opening and the closing are realized.

Drawings

FIG. 1 is a schematic structural view of a pressure-measurable automatic shut-off valve for a gas pipeline;

FIG. 2 is a schematic view showing the internal structure of a pressure-measurable automatic shut-off valve for a gas pipeline;

fig. 3 is an enlarged schematic structural diagram of a position A of the automatic pressure-measurable cut-off valve for the gas pipeline.

In the figure: 1. protecting the cylinder; 2. a valve body; 3. an air outlet; 4. a barometer; 5. adjusting a rod; 6. a fixing bolt; 7. a limiting block; 8. a column; 9. a first spring; 10. a tabling plate; 11. a diaphragm; 12. sealing the sheet; 13. an air inlet; 14. a plug; 15. a communicating hole; 16. a pull rod; 17. a partition plate; 18. an airway; 19. a sealing cover; 20. a chain plate; 21. a support rod; 22. connecting sheets; 23. a second spring; 24. an anchor rod.

Detailed Description

Referring to fig. 1 to 3, in the embodiment of the present invention: the utility model provides a measurable pressure formula automatic cutout valve for gas pipeline, including valve body 2, the top of stating valve body 2 is equipped with protects a section of thick bamboo 1, and inlet port 13 has been seted up to valve body 2 one side, venthole 3 has been seted up to valve body 2's opposite side, and be equipped with baffle 17 between inlet port 13 and the venthole 3, the inner wall connection of baffle 17 and inlet port 13, and baffle 17 and inlet port 13 junction has seted up intercommunicating pore 15, it has pull rod 16 to peg graft in the intercommunicating pore 15, and the end welding of pull rod 16 has end cap 14, gomphosis board 10 has been cup jointed at pull rod 16's top, and the inboard wall connection of gomphosis board 10 and valve body 2, be equipped with diaphragm 11 in the gomphosis board.

In fig. 2, the upper end of the pull rod 16 penetrates through the embedded plate 10 and extends into the casing 1, the upper end of the pull rod 16 is sleeved with the first spring 9, the joint of the embedded plate 10, the partition plate 17 and the inner wall of the air inlet 13 is provided with the sealing sheet 12, the rebound force of the first spring 9 acts on the embedded plate 10, the plug 14 descends through the pull rod 16 to enable the valve body 2 to circulate, and the diaphragm 11 drives the embedded plate 10 to ascend and also drives the plug 14 through the pull rod 16 to block the communication hole 15.

In fig. 2, stand 8 has been cup jointed to the upper end of first spring 9, and the top welding of stand 8 has stopper 7, and the length of stopper 7 is greater than the diameter of first spring 9, and the top center welding of stopper 7 has adjusting pole 5, and adjusts pole 5 and transversely peg graft and have gim peg 6, and stopper 7 is used for retraining first spring 9 top and keeps it fixed, adjusts pole 5 and can directly stimulate whole airtight mechanism and realize the manual work and cut off and fix regulation pole 5 through gim peg 6.

In fig. 2, a sealing cover 19 is sleeved on the top of the casing 1, the inner diameter of the sealing cover 19 is larger than the outer diameter of the casing 1, the length of the sealing cover 19 is one third of the length of the casing 1, a chain plate 20 is fixedly mounted at the lower end of one side of the sealing cover 19, and the sealing cover 19 protects a locking mechanism and is movably fixed on the casing 1 through the chain plate 20.

In fig. 3, the other side of the sealing cover 19 is connected with an anchor rod 24 through a bearing, the top of the anchor rod 24 is connected with a support rod 21 through a bearing, the anchor rod 24 is divided into two screw rods and a threaded sleeve, the screw rods are respectively sleeved at two ends of the threaded sleeve, a connecting piece 22 is welded on the side surface of the sealing cover 19, the anchor rod 24 is a standard component, the overall length is adjusted by rotating the threaded sleeve, when the support rod 21 is embedded in the casing 1, the threaded sleeve is rotated to enable the anchor rod 24 to extend and abut against the rear end of the support rod 21 to enable the support rod 21 to be locked, when the casing needs to be opened, the threaded sleeve is rotated to enable the threaded sleeve to completely go from one screw rod to the other screw rod.

In fig. 3, the three fifths of the resisting rod 21 is connected with the upper end of the connecting piece 22 by a pin, the tail part of the resisting rod 21 is connected with a second spring 23, the outer surface of the casing 1 is provided with a lock groove, the lock groove does not penetrate through the inner wall of the casing 1, the upper end of the resisting rod 21 is embedded in the lock groove, the resisting rod 21 is movably fixed on the sealing cover 19 through the connecting piece 22, and the resisting is completed through the second spring 23.

In fig. 2, an air passage 18 is formed in the valve body 2 and above the air outlet hole 3, the top of the air passage 18 is connected with a barometer 4, and gas enters the barometer 4 through the air passage 18 to realize air pressure detection.

The utility model discloses a theory of operation is: gas enters the valve body 2 from the gas inlet 13 under normal pressure and is directly discharged from the gas outlet 3, the choke plug 14 is always kept descending due to the resilience of the first spring 9, the valve body 2 cannot interfere with the circulation of the gas, once the gas pressure is higher than the resilience of the first spring 9, the pressure directly acts on the diaphragm 11 to jack the diaphragm 11, the diaphragm 11 drives the embedded plate 10 to ascend, the embedded plate 10 drives the choke plug 14 to ascend through the pull rod 16 in the ascending process, so that the choke plug 14 blocks the communicating hole 15 to separate the gas inlet 13 from the gas outlet 3, the adjusting rod 5 can directly pull the whole sealing mechanism to realize manual cut-off and fix the adjusting rod 5 through the fixing bolt 6, the sealing cover 19 protects the locking mechanism and is movably fixed on the protective cylinder 1 through the chain plate 20, after the protective cylinder 1 is embedded in the protective cylinder 21, the thread sleeve is rotated to enable the anchor rod 24 to extend to abut against the rear end of the, when the bolt is required to be opened, the screw sleeve is rotated again to enable the screw sleeve to be completely screwed from one screw rod to the other screw rod, then the anchor rod 24 is separated, and the retaining rod 21 can be pressed to be separated from the pile casing 1.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a measurable pressure formula automatic cutout valve for gas pipeline, includes valve body (2), its characterized in that: the improved valve is characterized in that a protective cylinder (1) is arranged at the top of the valve body (2), an air inlet hole (13) is formed in one side of the valve body (2), an air outlet hole (3) is formed in the other side of the valve body (2), a partition plate (17) is arranged between the air inlet hole (13) and the air outlet hole (3), the partition plate (17) is connected with the inner wall of the air inlet hole (13), a communicating hole (15) is formed in the joint of the partition plate (17) and the air inlet hole (13), a pull rod (16) is inserted into the communicating hole (15), a plug (14) is welded at the tail end of the pull rod (16), a mosaic plate (10) is sleeved at the top of the pull rod (16), the mosaic plate (10) is connected with the inner wall of the valve body (2), a diaphragm (11) is arranged in the mosaic plate (10), and the two ends of.

2. The automatic pressure-measurable cutoff valve for the gas pipeline is characterized in that the upper end of the pull rod (16) penetrates through the embedded plate (10) and extends into the casing (1), the upper end of the pull rod (16) is sleeved with the first spring (9), and sealing pieces (12) are arranged at the joints of the embedded plate (10), the partition plate (17) and the inner wall of the air inlet hole (13).

3. The automatic cutoff valve capable of measuring pressure for the gas pipeline according to claim 2 is characterized in that an upright post (8) is sleeved at the upper end of the first spring (9), a limiting block (7) is welded at the top of the upright post (8), the length of the limiting block (7) is larger than the diameter of the first spring (9), an adjusting rod (5) is welded at the center of the top of the limiting block (7), and a fixing bolt (6) is transversely inserted into the adjusting rod (5).

4. The automatic cutoff valve for the measurable pressure of the gas pipeline according to the claim 1 is characterized in that the top of the casing (1) is sleeved with a sealing cover (19), the inner diameter of the sealing cover (19) is larger than the outer diameter of the casing (1), the length of the sealing cover (19) is one third of the length of the casing (1), and the lower end of one side of the sealing cover is fixedly provided with a chain plate (20).

5. The automatic cutoff valve for the measurable pressure of a gas pipeline according to claim 4 is characterized in that the other side of the sealing cover (19) is connected with an anchor rod (24) through a bearing, the top of the anchor rod (24) is connected with a resisting rod (21) through a bearing, the anchor rod (24) is divided into two screw rods and a threaded sleeve, the screw rods are respectively sleeved at two ends of the threaded sleeve, and the side surface of the sealing cover (19) is welded with a connecting piece (22).

6. The automatic pressure-measurable cutoff valve for the gas pipeline according to claim 5, characterized in that three fifths of the abutting rods (21) are connected with the upper end of the connecting piece (22) through pins from bottom to top, the tail parts of the abutting rods (21) are connected with second springs (23), the outer surface of the casing (1) is provided with locking grooves, the locking grooves do not penetrate through the inner wall of the casing (1), and the upper ends of the abutting rods (21) are embedded in the locking grooves.

7. The automatic cutoff valve capable of measuring the pressure for the gas pipeline is characterized in that an air passage (18) is formed in the valve body (2) and above the air outlet hole (3), and the top of the air passage (18) is connected with a gas pressure gauge (4).