阅读说明：本技术 一种超高压自力式调压器 (Ultrahigh pressure self-operated pressure regulator ) 是由 王常青 李川 潘世柳 曾天民 罗一博 钟翔 于 2020-06-23 设计创作，主要内容包括：本发明公开了一种超高压自力式调压器,包括气动薄膜阀和指挥器,所述气动薄膜阀通过仪表风管及接头和指挥器相连接,气动薄膜阀包括阀体、阀盖、膜腔室、定铁芯、气动薄膜阀薄膜、定位柱、弹簧、放空阀、密封组件、推杆、行程指示器、气动薄膜阀阀座、进口阀腔、出口阀腔、气动薄膜阀阀芯和固定件,所述阀盖固定安装在阀体的上端；所述膜腔室设置在阀盖和阀体之间；所述定铁芯设置在膜腔室内；本发明的有益效果是该一种超高压自力式调压器,具有密封性强,使用寿命长等优点,适合推广使用。(The invention discloses an ultrahigh pressure self-operated pressure regulator, which comprises a pneumatic film valve and a commander, wherein the pneumatic film valve is connected with the commander through an instrument air pipe and a connector, the pneumatic film valve comprises a valve body, a valve cover, a film chamber, a fixed iron core, a pneumatic film valve film, a positioning column, a spring, a vent valve, a sealing assembly, a push rod, a stroke indicator, a pneumatic film valve seat, an inlet valve chamber, an outlet valve chamber, a pneumatic film valve core and a fixing piece, and the valve cover is fixedly arranged at the upper end of the valve body; the membrane chamber is arranged between the valve cover and the valve body; the fixed iron core is arranged in the membrane cavity; the ultrahigh pressure self-operated pressure regulator has the advantages of high sealing performance, long service life and the like, and is suitable for popularization and application.)

1. An ultrahigh pressure self-operated pressure regulator comprises a pneumatic diaphragm valve (32) and a director (33), and is characterized in that: the pneumatic membrane valve (32) is connected with a commander (33) through an instrument air pipe and a joint; the pneumatic membrane valve (32) comprises a valve body (16), a valve cover (17), a membrane chamber (18), a fixed iron core (19), a pneumatic membrane valve membrane (20), a positioning column (21), a spring (22), an emptying valve (23), a sealing assembly (24), a push rod (25), a stroke indicator (26), a pneumatic membrane valve seat (27), an inlet valve chamber (28), an outlet valve chamber (29), a pneumatic membrane valve core (30) and a fixing piece (31), wherein the valve cover (17) is fixedly arranged at the upper end of the valve body (16); the membrane chamber (18) is arranged between the valve cover (17) and the valve body (16); the stationary core (19) is arranged in the membrane chamber (18); the pneumatic membrane valve membrane (20) is arranged at the bottom of the fixed iron core (19); the positioning column (21) is fixedly arranged at the central position of the inner side of the fixed iron core (19); the fixing piece (31) is fixedly arranged at the top end of the valve cover (17); the spring (22) is sleeved at the outer end of the positioning column (21), the upper end of the spring is connected with the fixing piece (31), and the lower end of the spring is fixedly connected to the fixed iron core (19); the emptying valve (23) is arranged on the lower side of the upper end of the valve body (16); the pneumatic membrane valve seat (27) is transversely and fixedly connected to the lower end of the valve body (16), and the sealing assembly (24) is fixedly arranged on the pneumatic membrane valve seat (27); the inlet valve cavity (28) and the outlet valve cavity (29) are respectively arranged at two ends of a valve seat (27) of the pneumatic membrane valve, and a valve core (30) of the pneumatic membrane valve is fixedly arranged on a valve port of the inlet valve cavity (28) communicated with the outlet valve cavity (29); the upper end of the push rod (25) is connected with the bottom center of the fixed iron core (19), and the lower end of the push rod penetrates through the valve body (16) and the sealing assembly (24) and is arranged in the valve core (30) of the pneumatic membrane valve; the travel indicator (26) is fixedly arranged on the push rod (25).

2. A uhp self-operated pressure regulator according to claim 1 wherein: the commander (33) comprises a shell (1), an adjusting screw (2), a guide spring (3), a diaphragm component (4), a film (5), a moving part (6), an adjusting diaphragm (7), a guide plug (8), a valve core (9), an air supply valve port (10), an exhaust valve port (11), a valve seat (12), a pipeline (13), a pressure gauge (14) and a connecting component (15), wherein a mounting die cavity is arranged in the shell (1); the adjusting screw (2) is arranged at the top end of the shell (1), and the lower end of the adjusting screw is screwed into the mounting die cavity; the upper end and the lower end of the guide spring (3) are respectively and fixedly connected to the connecting component (15); the connecting assembly (15) is arranged in the mounting die cavity, the upper end of the connecting assembly is arranged at the lower end of the adjusting screw (2), and the lower end of the connecting assembly is movably mounted on the diaphragm assembly (4); the diaphragm assembly (4) is arranged in the installation die cavity, the upper end of the diaphragm assembly is connected with the connecting assembly (15), and the lower section of the diaphragm assembly is provided with a movable piece (6); the film (5) is fixedly arranged in the mounting die cavity and is arranged at the side end of the diaphragm assembly (4); the valve seat (12) is fixedly arranged at the lower end of the shell (1), and the valve seat (12) is communicated with the installation die cavity; the adjusting diaphragm (7) is fixedly arranged at the lower end of the moving piece (6); the air supply valve port (10) and the exhaust valve port (11) are respectively arranged at two side ends of the valve seat (12); a lower valve port is arranged at the communication part of the air supply valve port (10) and the exhaust valve port (11), and the guide plug (8) is arranged on the lower valve port; the valve core (9) consists of a connecting rod and two stainless steel small balls tightly connected with two ends of the connecting rod, the upper end of the valve core is positioned in the moving part (6), and the lower end of the valve core is positioned in the guide plug (8); the pipeline (13) is connected to one side end of the shell (1) and communicated with the installation die cavity; the pressure gauge (14) is arranged on the pipeline (13).

3. A uhp self-operated pressure regulator according to claim 1 wherein: the fixed iron core (19), the positioning column (21) and the push rod (25) are positioned on the same vertical central line.

4. A uhp self-operated pressure regulator according to claim 2 wherein: the pneumatic diaphragm valve membrane (20) is made of an elastic plastic, and is made of a material such as Natural Rubber (NR), nitrile rubber (NBR), styrene-butadiene rubber (SBR), Chloroprene Rubber (CR), Butadiene Rubber (BR) or ethylene propylene rubber (EPDM)) or a thermoplastic elastomer (TPE), in particular, olefin-based thermoplastic elastomer (TPE-O), urethane-based thermoplastic elastomer (TPE-U), styrene block copolymer (TPE-S), thermoplastic polyester elastomer (TPE-E), Thermoplastic Polyester (TPC), thermoplastic copolyol (TPE-a).

5. A uhp self-operated pressure regulator according to claim 2 wherein: the membrane (5) has twice the area of its valve seat (12).

6. A uhp self-operated pressure regulator according to claim 2 wherein: the valve core (9) consists of a connecting rod and two stainless steel small balls with different sizes which are tightly connected with the two ends of the connecting rod, wherein the small balls are positioned in the moving part (6), and the large balls are positioned in the guide plug (8).

7. A uhp self-operated pressure regulator according to claim 2 wherein: an upper valve port is arranged between the exhaust valve port (11) and the pipeline (13).

Technical Field

The invention relates to a pressure regulator, in particular to an ultrahigh pressure self-operated pressure regulator.

Background

At present, most of the existing pressure regulators, especially direct action type, adopt the spring action principle to regulate the pressure, but the pressure regulating range is narrower, and the pressure difference is smaller. Generally, the pressure regulating valve can only regulate the pressure of a conventional high-pressure air source with nominal pressure less than 10MPa, but cannot normally work under the conditions of ultrahigh pressure and large pressure difference. Most occasions such as CNG pressure regulating stations and gas filling stations need to carry out peak regulation and pressure reduction on ultrahigh pressure gas sources with nominal pressure of more than 10MPa, the existing pressure regulators are complex in structure and high in price, and parts such as valve ports of the pressure regulators are easy to damage and have low service lives due to erosion and cavitation generated by ultrahigh pressure, particularly ultrahigh pressure difference and other chemical corrosion.

Disclosure of Invention

The present invention is directed to a self-operated ultrahigh pressure regulator, which solves the above problems.

The purpose of the invention is realized by the following technical scheme: the pneumatic film valve comprises a valve body, a valve cover, a film chamber, a fixed iron core, a pneumatic film valve film, a positioning column, a spring, a vent valve, a sealing assembly, a push rod, a stroke indicator, a pneumatic film valve seat, an inlet valve cavity, an outlet valve cavity, a pneumatic film valve core and a fixing piece, wherein the valve cover is fixedly arranged at the upper end of the valve body; the membrane chamber is arranged between the valve cover and the valve body; the fixed iron core is arranged in the membrane cavity; the pneumatic membrane valve membrane is arranged at the bottom of the fixed iron core; the positioning column is fixedly arranged at the central position of the inner side of the fixed iron core; the fixing piece is fixedly arranged at the top end of the valve cover; the spring is sleeved at the outer end of the positioning column, the upper end of the spring is connected with the fixing piece, and the lower end of the spring is fixedly connected to the fixed iron core; the emptying valve is arranged at the lower side of the upper end of the valve body; the valve seat of the pneumatic membrane valve is transversely and fixedly connected to the lower end of the valve body; the sealing assembly is fixedly arranged on the valve seat of the pneumatic membrane valve; the inlet valve cavity and the outlet valve cavity are respectively arranged at two ends of the valve seat of the pneumatic membrane valve, and a valve core of the pneumatic membrane valve is fixedly arranged on a valve port of the inlet valve cavity communicated with the outlet valve cavity; the upper end of the push rod is connected with the center of the bottom end of the fixed iron core, and the lower end of the push rod penetrates through the valve body and the sealing assembly and is arranged in the pneumatic thin film valve core; the stroke indicator is fixedly arranged on the push rod.

Furthermore, the commander comprises a shell, an adjusting screw, a guide spring, a diaphragm assembly, a film, a moving part, an adjusting diaphragm, a guide plug, a valve core, an air supply valve port, an exhaust valve port, a valve seat, a pipeline, a pressure gauge and a connecting assembly, wherein an installation mold cavity is arranged in the shell; the adjusting screw is arranged at the top end of the shell, and the lower end of the adjusting screw is screwed into the mounting die cavity; the upper end and the lower end of the guide spring are respectively and fixedly connected to the connecting component; the connecting assembly is arranged in the mounting die cavity, the upper end of the connecting assembly is arranged at the lower end of the adjusting screw, and the lower end of the connecting assembly is movably mounted on the diaphragm assembly; the diaphragm assembly is arranged in the installation die cavity, the upper end of the diaphragm assembly is connected with the connecting assembly, and the lower section of the diaphragm assembly is provided with a movable piece; the film is fixedly arranged in the mounting die cavity and is arranged at the side end of the diaphragm assembly; the valve seat is fixedly arranged at the lower end of the shell and communicated with the mounting die cavity; the adjusting diaphragm is fixedly arranged at the lower end of the movable piece; the air supply valve port and the air exhaust valve port are respectively arranged at two side ends of the valve seat; the lower valve port is arranged at the communication part of the air supply valve port and the exhaust valve port, and the guide plug is arranged on the lower valve port; the valve core consists of a connecting rod and two stainless steel small balls tightly connected with two ends of the connecting rod, the upper end of the valve core is positioned in the moving part, and the lower end of the valve core is positioned in the guide plug; the pipeline is connected to one side end of the shell and communicated with the installation die cavity; the pressure gauge is installed on the pipeline.

Furthermore, the fixed iron core, the positioning column and the push rod are positioned on the same vertical central line.

Further, the pneumatic diaphragm valve membrane is made of an elastic plastic, and is made of a material such as Natural Rubber (NR), nitrile rubber (NBR), styrene-butadiene rubber (SBR), Chloroprene Rubber (CR), Butadiene Rubber (BR) or ethylene propylene rubber (EPDM)) or a thermoplastic elastomer (TPE), particularly, olefin-based thermoplastic elastomer (TPE-O), urethane-based thermoplastic elastomer (TPE-U), styrene block copolymer (TPE-S), thermoplastic polyester elastomer (TPE-E), Thermoplastic Polyester (TPC), thermoplastic copolyol (TPE-a).

Further, the membrane has an area twice that of the valve seat.

Furthermore, the valve core consists of a connecting rod and two stainless steel small balls with different sizes tightly connected with the two ends of the connecting rod, wherein the small balls are positioned in the moving part, and the large balls are positioned in the guide plug.

Furthermore, an upper valve port is arranged between the exhaust valve port and the pipeline.

A pressure regulating method of an ultrahigh pressure self-operated pressure regulator,

firstly, screwing an adjusting screw to compress a guide spring of the adjusting screw to reach a preset pressure;

when the pressure in the pipeline is too low, the guide spring presses the diaphragm assembly and the movable part to move downwards, firstly, the upper valve port is closed, then the lower valve port is opened, the pressure of the gas supply valve port is allowed to enter the lower part of the regulating diaphragm and is balanced with the pressure of the upper part, at the moment, the valve seat is opened under the pushing action of the pressure of the gas supply valve port acting on the bottom of the valve seat, the pressure in the pipeline is gradually increased, when the pressure in the pipeline reaches a set value, the valve core can simultaneously close the upper valve port and the lower valve port, when the pressure in the pipeline exceeds the set value of the guide spring, the movable part can move upwards, the upper valve port of the valve core is opened, the gas is allowed to be discharged from the bottom of the film, and when the pressure at the bottom of the film is reduced, the valve;

and thirdly, driving the pressure change in the pneumatic membrane valve according to the pressure change in the second step, so that the membrane of the pneumatic membrane valve further drives the push rod to move according to the pressure change, and the push rod moves up and down in the valve core of the pneumatic membrane valve, thereby realizing the purpose of opening and closing the pneumatic membrane valve.

Compared with the prior art, the ultrahigh pressure self-operated pressure regulator has the advantages of strong sealing performance, long service life and the like, and is suitable for popularization and use.

Drawings

FIG. 1 is a diagram illustrating the overall structure of the present invention;

FIG. 2 is a structural effect diagram of the pneumatic membrane valve of the present invention;

FIG. 3 is a structural effect diagram of the commander of the present invention;

in the figure: 1-shell, 2-adjusting screw, 3-guide spring, 4-diaphragm component, 5-film, 6-moving component, 7-adjusting diaphragm, 8-guide plug, 9-valve core, 10-air supply valve port, 11-air exhaust valve port, 12-valve seat, 13-pipeline, 14-pressure gauge, 15-connecting component, 16-valve body, 17-valve cover, 18-film chamber, 19-fixed iron core, 20-pneumatic film valve film, 21-positioning column, 22-spring, 23-emptying valve, 24-sealing component, 25-push rod, 26-stroke indicator, 27-pneumatic film valve seat, 28-valve cavity inlet, 29-outlet valve cavity, 30-pneumatic film valve core, 31-fixing component, fixed component, 32-pneumatic membrane valve, 33-director.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

As shown in fig. 1-2, the invention discloses an ultrahigh pressure self-operated pressure regulator, which comprises a pneumatic membrane valve 32 and a director 33, wherein the pneumatic membrane valve 32 is connected with the director 33 through an instrument air pipe and a connector, the pneumatic membrane valve 32 comprises a valve body 16, a valve cover 17, a membrane chamber 18, a fixed iron core 19, a pneumatic membrane valve membrane 20, a fixed column 21, a spring 22, a blow-down valve 23, a sealing assembly 24, a push rod 25, a stroke indicator 26, a pneumatic membrane valve seat 27, an inlet valve chamber 28, an outlet valve chamber 29, a pneumatic membrane valve core 30 and a fixing member 31, and the valve cover 17 is fixedly installed at the upper end of the valve body 16; the membrane chamber 18 is arranged between the valve cover 17 and the valve body 16; the fixed iron core 19 is arranged in the membrane chamber 18; the pneumatic membrane valve membrane 20 is arranged at the bottom of the fixed iron core 19; the positioning column 21 is fixedly arranged at the central position of the inner side of the fixed iron core 19; the fixing piece 31 is fixedly arranged at the top end of the valve cover 17; the spring 22 is sleeved at the outer end of the positioning column 21, the upper end of the spring is connected with the fixing piece 31, and the lower end of the spring is fixedly connected to the fixed iron core 19; the emptying valve 23 is arranged at the lower side of the upper end of the valve body 16; the pneumatic membrane valve seat 27 is transversely and fixedly connected to the lower end of the valve body 16; the sealing assembly 24 is fixedly arranged on a valve seat 27 of the pneumatic membrane valve; the inlet valve cavity 28 and the outlet valve cavity 29 are respectively arranged at two ends of the pneumatic diaphragm valve seat 27, and a pneumatic diaphragm valve core 30 is fixedly arranged on a valve port of the inlet valve cavity 28 communicated with the outlet valve cavity 29; the upper end of the push rod 25 is connected with the bottom center of the fixed iron core 19, and the lower end of the push rod passes through the valve body 16 and the sealing assembly 24 and is arranged in the valve core 30 of the pneumatic membrane valve; the stroke indicator 26 is fixedly arranged on the push rod 25, the commander 33 comprises a shell 1, an adjusting screw 2, a guide spring 3, a diaphragm component 4, a film 5, a movable part 6, an adjusting diaphragm 7, a guide plug 8, a valve core 9, an air supply valve port 10, an exhaust valve port 11, a valve seat 12, a pipeline 13, a pressure gauge 14 and a connecting component 15, and an installation mold cavity is arranged in the shell 1; the adjusting screw 2 is arranged at the top end of the shell 1, and the lower end of the adjusting screw is screwed into the mounting die cavity; the upper end and the lower end of the guide spring 3 are respectively and fixedly connected to the connecting assembly 15; the connecting assembly 15 is arranged in the mounting die cavity, the upper end of the connecting assembly is arranged at the lower end of the adjusting screw 2, and the lower end of the connecting assembly is movably arranged on the diaphragm assembly 4; the diaphragm assembly 4 is arranged in the installation die cavity, the upper end of the diaphragm assembly is connected with the connecting assembly 15, and the lower section of the diaphragm assembly is provided with a movable piece 6; the film 5 is fixedly arranged in the installation die cavity and is arranged at the side end of the diaphragm component 4; the valve seat 12 is fixedly arranged at the lower end of the shell 1, and the valve seat 12 is communicated with the installation die cavity; the adjusting diaphragm 7 is fixedly arranged at the lower end of the movable piece 6; the air supply valve port 10 and the air exhaust valve port 11 are respectively arranged at two side ends of the valve seat 12; a lower valve port is arranged at the communication part of the gas supply valve port 10 and the exhaust valve port 11, and the guide plug 8 is arranged on the lower valve port; the valve core 9 consists of a connecting rod and two stainless steel small balls tightly connected with two ends of the connecting rod, the upper end of the valve core is positioned in the moving part 6, and the lower end of the valve core is positioned in the guide plug 8; the pipeline 13 is connected to one side end of the shell 1 and communicated with the installation die cavity; the pressure gauge 14 is installed on the pipe 13, the fixed iron core 19, the positioning column 21 and the push rod 25 are located on the same vertical center line, the pneumatic thin film valve film 20 is made of elastic plastic, and the adopted materials are Natural Rubber (NR), nitrile rubber (NBR), styrene-butadiene rubber (SBR), Chloroprene Rubber (CR), Butadiene Rubber (BR) or ethylene propylene rubber (EPDM)) or thermoplastic elastomer (TPE), especially olefin-based thermoplastic elastomer (TPE-O), urethane-based thermoplastic elastomer (TPE-U), styrene block copolymer (TPE-S), thermoplastic polyester elastomer (TPE-E), Thermoplastic Polyester (TPC), thermoplastic copolymer (TPE-a), the area of the thin film 2 is twice of the area of the valve seat 12, the valve core 9 is composed of a connecting rod and two stainless steel small balls with different sizes tightly connected to the two ends of the connecting rod, the small ball is positioned in the movable piece 6, the large ball is positioned in the guide plug 8, and an upper valve port is arranged between the exhaust valve port 11 and the pipeline 13.

When the invention is used, in the first step, the adjusting screw 2 is screwed to compress the guide spring 3 thereof to reach a preset pressure;

secondly, when the pressure in the pipeline 13 is too low, the guide spring 3 presses the diaphragm assembly 4 and the movable element 6 to move downwards, firstly, the upper valve port is closed, then the lower valve port is opened, the pressure of the gas supply valve port 10 is allowed to enter the lower part of the regulating diaphragm 7 and is balanced with the pressure of the upper part, at the moment, the valve seat 12 is opened under the pushing of the pressure of the gas supply valve port 10 acting on the bottom of the valve seat, the pressure in the pipeline 13 is gradually increased, when a set value is reached, the valve core 9 simultaneously closes the upper valve port and the lower valve port, when the pressure in the pipeline 13 exceeds the set value of the guide spring 3, the movable element 6 moves upwards and opens the upper valve port of the valve core 9, the gas is allowed to be discharged from the bottom of the film 5, and when the pressure at the bottom of the film 5 is reduced, the valve core 9 moves downwards;

and thirdly, driving the pressure change in the pneumatic membrane valve according to the pressure change in the second step, so that the membrane 20 of the pneumatic membrane valve further drives the push rod 25 to move according to the pressure change, and the push rod 25 moves up and down in the valve core 30 of the pneumatic membrane valve, thereby realizing the purpose of opening and closing the pneumatic membrane valve.

The ultrahigh pressure self-operated pressure regulator has the advantages of high sealing performance, long service life and the like, and is suitable for popularization and application.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.