阅读说明：本技术 一种用于控制燃机电厂esd阀的高可靠性集成式电磁阀 (High-reliability integrated electromagnetic valve for controlling ESD valve of gas turbine power plant ) 是由 贾龙 许凌云 孔庆龙 刘全生 王继强 王生辉 张艳明 李征 于 2021-08-09 设计创作，主要内容包括：本发明涉及电磁阀,具体是一种用于控制燃机电厂ESD阀的高可靠性集成式电磁阀。本发明解决了现有ESD阀控制技术控制可靠性差的问题。一种用于控制燃机电厂ESD阀的高可靠性集成式电磁阀,包括底座、顶座、左电磁换向阀、右电磁换向阀；其中,底座为L形块状结构；顶座为矩形块状结构；底座和顶座共同拼合构成开口朝左的U形阀座；底座的内部分别开设有第一U形气道、第二U形气道、第一L形气道、第二L形气道；顶座的内部分别开设有第三U形气道、第四U形气道、第三L形气道、第一直形气道、第二直形气道、第三直形气道；左电磁换向阀和右电磁换向阀并排装配于U形阀座的开口内。本发明适用于燃机电厂。(The invention relates to an electromagnetic valve, in particular to a high-reliability integrated electromagnetic valve for controlling an ESD valve of a gas turbine power plant. The invention solves the problem of poor control reliability of the existing ESD valve control technology. A high-reliability integrated electromagnetic valve for controlling an ESD valve of a gas turbine power plant comprises a base, a top seat, a left electromagnetic directional valve and a right electromagnetic directional valve; wherein, the base is in an L-shaped block structure; the top seat is of a rectangular block structure; the base and the top seat are spliced together to form a U-shaped valve seat with an opening facing to the left; a first U-shaped air passage, a second U-shaped air passage, a first L-shaped air passage and a second L-shaped air passage are respectively arranged in the base; a third U-shaped air passage, a fourth U-shaped air passage, a third L-shaped air passage, a first straight air passage, a second straight air passage and a third straight air passage are respectively arranged in the top seat; the left electromagnetic directional valve and the right electromagnetic directional valve are assembled in the opening of the U-shaped valve seat side by side. The invention is suitable for a gas turbine power plant.)

1. A high reliability integrated form solenoid valve for controlling a combustion engine power plant ESD valve characterized by: comprises a base (1), a top seat (2), a left electromagnetic directional valve (3) and a right electromagnetic directional valve (4);

wherein the base (1) is of an L-shaped block structure; the top seat (2) is a rectangular block structure; the base (1) and the top seat (2) are spliced together to form a U-shaped valve seat with an opening facing left;

a first U-shaped air passage, a second U-shaped air passage, a first L-shaped air passage and a second L-shaped air passage are respectively arranged in the base (1);

a head end opening (101 a) of the first U-shaped air passage penetrates through the upper surface of a horizontal section of the base (1), and a tail end opening (101 b) of the first U-shaped air passage penetrates through the upper surface of a vertical section of the base (1); a head end opening (102 a) of the second U-shaped air passage penetrates through the upper surface of the horizontal section of the base (1), and a tail end opening (102 b) of the second U-shaped air passage penetrates through the upper surface of the vertical section of the base (1); a head end opening (103 a) of the first L-shaped air passage penetrates through the upper surface of the horizontal section of the base (1), and a tail end opening (103 b) of the first L-shaped air passage penetrates through the front surface of the horizontal section of the base (1); a head end opening (104 a) of the second L-shaped air passage penetrates through the upper surface of the horizontal section of the base (1), and a tail end opening (104 b) of the second L-shaped air passage penetrates through the rear surface of the horizontal section of the base (1);

a third U-shaped air passage, a fourth U-shaped air passage, a third L-shaped air passage, a first straight air passage, a second straight air passage and a third straight air passage are respectively arranged in the top seat (2);

the head end opening (201 a) and the tail end opening (201 b) of the third U-shaped air passage both penetrate through the lower surface of the top seat (2), and the tail end opening (201 b) of the third U-shaped air passage is communicated with the tail end opening (101 b) of the first U-shaped air passage in a sealing mode; the head end opening (202 a) and the tail end opening (202 b) of the fourth U-shaped air passage both penetrate through the lower surface of the top seat (2), and the tail end opening (202 b) of the fourth U-shaped air passage is communicated with the tail end opening (102 b) of the second U-shaped air passage in a sealing mode; the head end opening (203 a) of the third L-shaped air passage penetrates through the lower surface of the top seat (2), and the tail end opening (203 b) of the third L-shaped air passage penetrates through the rear surface of the top seat (2); the head end opening (204 a) of the first straight air passage penetrates through the lower surface of the top seat (2), and the tail end opening (204 b) of the first straight air passage penetrates through the upper surface of the top seat (2); the head end opening (205 a) of the second straight air passage penetrates through the lower surface of the top seat (2), and the tail end opening (205 b) of the second straight air passage penetrates through the upper surface of the top seat (2); the head end opening (206 a) of the third straight air passage penetrates through the lower surface of the top seat (2), and the tail end opening (206 b) of the third straight air passage penetrates through the upper surface of the top seat (2);

the left electromagnetic directional valve (3) and the right electromagnetic directional valve (4) are assembled in the opening of the U-shaped valve seat side by side, and the left electromagnetic directional valve (3) and the right electromagnetic directional valve (4) are both two-position five-way electromagnetic directional valves;

the first valve port (3 a) of the left electromagnetic directional valve (3) is communicated with the head end opening (206 a) of the third straight air passage in a sealing way; a second valve port (3 b) of the left electromagnetic directional valve (3) is communicated with a head end opening (104 a) of a second L-shaped air passage in a sealing way; a third valve port (3 c) of the left electromagnetic directional valve (3) is communicated with a head end opening (202 a) of a fourth U-shaped air passage in a sealing way; a fourth valve port (3 d) of the left electromagnetic directional valve (3) is communicated with a head end opening (101 a) of the first U-shaped air passage in a sealing way; a fifth valve port (3 e) of the left electromagnetic directional valve (3) is communicated with a head end opening (204 a) of the first straight air passage in a sealing way;

a first valve port (4 a) of the right electromagnetic directional valve (4) is communicated with a head end opening (201 a) of the third U-shaped air passage in a sealing way; a second valve port (4 b) of the right electromagnetic directional valve (4) is communicated with a head end opening (102 a) of a second U-shaped air passage in a sealing way; a third valve port (4 c) of the right electromagnetic directional valve (4) is communicated with a head end opening (203 a) of a third L-shaped air passage in a sealing way; a fourth valve port (4 d) of the right electromagnetic directional valve (4) is communicated with a head end opening (103 a) of the first L-shaped air passage in a sealing way; the fifth valve port (4 e) of the right electromagnetic directional valve (4) is communicated with the head end opening (205 a) of the second straight air passage in a sealing way.

2. A high reliability integrated solenoid valve for controlling a combustion engine plant ESD valve according to claim 1, wherein: a first straight detection pore channel and a second straight detection pore channel are respectively arranged in the base (1); the head end opening of the first straight detection pore passage penetrates through the corner of the first U-shaped air passage, and the tail end opening (105 b) penetrates through the right surface of the base (1); the head end opening of the second straight detection pore passage penetrates through the corner of the second U-shaped air passage, and the tail end opening (106 b) penetrates through the right surface of the base (1).

3. A high reliability integrated solenoid valve for controlling a combustion engine plant ESD valve according to claim 1, wherein: a third straight detection pore channel, a fourth straight detection pore channel, a fifth straight detection pore channel and a sixth straight detection pore channel are respectively arranged in the top seat (2); the head end opening of the third straight detection pore passage penetrates through the corner of the third U-shaped air passage, and the tail end opening (207 b) penetrates through the front surface of the top seat (2); the head end opening of the fourth straight detection pore passage penetrates through the corner of the third U-shaped air passage, and the tail end opening (208 b) penetrates through the right surface of the top seat (2); a head end opening of the fifth straight detection pore passage penetrates through the corner of the fourth U-shaped air passage, and a tail end opening (209 b) penetrates through the right surface of the top seat (2); the head end opening of the sixth straight detection pore passage penetrates through the corner of the fourth U-shaped air passage, and the tail end opening (210 b) penetrates through the rear surface of the top seat (2).

4. A high reliability integrated solenoid valve for controlling a combustion engine plant ESD valve according to claim 1, wherein: the device also comprises four first fastening bolts; the upper surface of the vertical section of the base (1) is respectively provided with four first blind screw holes (107) which are arranged in a rectangular shape; four countersunk holes (211) which are arranged in a rectangular shape are respectively arranged between the upper surface and the lower surface of the top seat (2) in a penetrating way, and the four countersunk holes (211) are in one-to-one butt joint with the four first blind screw holes (107); the four first fastening bolts penetrate through the four countersunk holes (211) in a one-to-one correspondence mode, and the tail ends of the four first fastening bolts are screwed in the four first blind screw holes (107) in a one-to-one correspondence mode.

5. A high reliability integrated solenoid valve for controlling a combustion engine plant ESD valve according to claim 1, wherein: the positioning device also comprises two positioning pins; the upper surface of the vertical section of the base (1) is respectively provided with two first positioning blind holes (108) which are arranged left and right; the lower surface of the top seat (2) is respectively provided with two second positioning blind holes (212) which are arranged left and right, and the two second positioning blind holes (212) are respectively butted with the two first positioning blind holes (108); the lower parts of the two positioning pins are respectively arranged in the two first positioning blind holes (108) in a penetrating way; the upper parts of the two positioning pins are respectively arranged in the two second positioning blind holes (212) in a penetrating way.

6. A high reliability integrated solenoid valve for controlling a combustion engine plant ESD valve according to claim 1, wherein: the device also comprises four second fastening bolts; the lower surface of the top seat (2) is respectively provided with four second blind screw holes (213); two mounting holes (3 f) of the left electromagnetic directional valve (3) are respectively butted with two second blind screw holes (213); two mounting holes (4 f) of the right electromagnetic directional valve (4) are respectively butted with the other two second blind screw holes (213); two second fastening bolts respectively penetrate through two mounting holes (3 f) of the left electromagnetic reversing valve (3), and the tail ends of the two second fastening bolts are respectively screwed in two second blind screw holes (213); the other two second fastening bolts respectively penetrate through the two mounting holes (4 f) of the right electromagnetic directional valve (4), and the tail ends of the two second fastening bolts are respectively screwed in the other two second blind screw holes (213).

7. A high reliability integrated solenoid valve for controlling a combustion engine plant ESD valve according to claim 1, wherein: a left ear plate (5) extends from the middle part of the lower edge of the left surface of the horizontal section of the base (1); a front ear plate (6) extends from the right part of the lower edge of the front surface of the base (1); the right part of the lower edge of the rear surface of the base (1) is provided with a rear ear plate (7) in an extending way.

8. A high reliability integrated solenoid valve for controlling a combustion engine plant ESD valve according to claim 1, wherein: the left electromagnetic directional valve (3) and the right electromagnetic directional valve (4) both adopt AirTac 5V21008 type electromagnetic directional valves.

Technical Field

The invention relates to an electromagnetic valve, in particular to a high-reliability integrated electromagnetic valve for controlling an ESD valve of a gas turbine power plant.

Background

In a gas turbine power plant, when a gas turbine unit breaks down suddenly or equipment in a natural gas pressure regulating station leaks suddenly, an ESD valve (emergency shut-off valve) on a natural gas pipeline needs to be closed quickly, so that a natural gas source is shut off emergently, and the safety of the gas turbine unit or the equipment in the natural gas pressure regulating station is ensured. At present, the opening and closing actions of the ESD valve are controlled by a single electromagnetic directional valve (the electromagnetic directional valve is a two-position five-way electromagnetic directional valve). The specific control mode is as follows: firstly, a worker controls the electromagnetic directional valve to be electrified through an external control device (such as an MCC drawer switch), so that the first valve port and the second valve port of the electromagnetic directional valve are communicated, and the fourth valve port and the fifth valve port of the electromagnetic directional valve are communicated. At the moment, air from an air source enters a left cylinder chamber of a double-acting cylinder (the double-acting cylinder is used for driving an ESD valve) through a first valve port of the electromagnetic directional valve and a second valve port of the electromagnetic directional valve in sequence, so that a piston of the double-acting cylinder is pushed to move rightwards (the air in the right cylinder chamber of the double-acting cylinder is discharged outwards through a fourth valve port and a fifth valve port of the electromagnetic directional valve in sequence), and the ESD valve is driven to be opened. After the ESD valve is opened, the gas turbine set and the equipment in the natural gas pressure regulating station can start to operate. In the operation process, when a gas turbine unit breaks down suddenly or equipment in a natural gas pressure regulating station leaks suddenly, a worker controls the electromagnetic directional valve to lose power through external control equipment, so that the first valve port and the fourth valve port of the electromagnetic directional valve are communicated, and the second valve port and the third valve port of the electromagnetic directional valve are communicated. At the moment, air from an air source enters the right cylinder chamber of the double-acting cylinder through the first valve port of the electromagnetic directional valve and the fourth valve port of the electromagnetic directional valve in sequence, so that the piston of the double-acting cylinder is pushed to move leftwards (the air in the left cylinder chamber of the double-acting cylinder is discharged outwards through the second valve port and the third valve port of the electromagnetic directional valve in sequence), and the ESD valve is driven to close. The control method has the problem of poor control reliability due to the limit of the principle of the control method. Specifically, when the gas turbine set and the equipment in the natural gas pressure regulating station normally operate, once the electromagnetic directional valve breaks down suddenly, the ESD valve is closed abnormally, so that the natural gas source is shut off abnormally, and the equipment in the gas turbine set and the natural gas pressure regulating station is shut down abnormally. Based on the above, there is a need for an integrated solenoid valve with high reliability for controlling an ESD valve of a combustion engine power plant, so as to solve the problem of poor control reliability of the existing ESD valve control technology.

Disclosure of Invention

The invention provides a high-reliability integrated electromagnetic valve for controlling an ESD valve of a gas turbine power plant, which aims to solve the problem of poor control reliability of the existing ESD valve control technology.

The invention is realized by adopting the following technical scheme:

a high-reliability integrated electromagnetic valve for controlling an ESD valve of a gas turbine power plant comprises a base, a top seat, a left electromagnetic directional valve and a right electromagnetic directional valve;

wherein, the base is in an L-shaped block structure; the top seat is of a rectangular block structure; the base and the top seat are spliced together to form a U-shaped valve seat with an opening facing to the left;

a first U-shaped air passage, a second U-shaped air passage, a first L-shaped air passage and a second L-shaped air passage are respectively arranged in the base;

the opening at the head end of the first U-shaped air passage penetrates through the upper surface of the horizontal section of the base, and the opening at the tail end of the first U-shaped air passage penetrates through the upper surface of the vertical section of the base; the opening at the head end of the second U-shaped air passage penetrates through the upper surface of the horizontal section of the base, and the opening at the tail end of the second U-shaped air passage penetrates through the upper surface of the vertical section of the base; the first end opening of the first L-shaped air passage penetrates through the upper surface of the horizontal section of the base, and the tail end opening of the first L-shaped air passage penetrates through the front surface of the horizontal section of the base; the opening at the head end of the second L-shaped air passage penetrates through the upper surface of the horizontal section of the base, and the opening at the tail end of the second L-shaped air passage penetrates through the rear surface of the horizontal section of the base;

a third U-shaped air passage, a fourth U-shaped air passage, a third L-shaped air passage, a first straight air passage, a second straight air passage and a third straight air passage are respectively arranged in the top seat;

the head end opening and the tail end opening of the third U-shaped air passage are both communicated with the lower surface of the top seat, and the tail end opening of the third U-shaped air passage is hermetically communicated with the tail end opening of the first U-shaped air passage; the head end opening and the tail end opening of the fourth U-shaped air passage are both communicated with the lower surface of the top seat, and the tail end opening of the fourth U-shaped air passage is hermetically communicated with the tail end opening of the second U-shaped air passage; the head end opening of the third L-shaped air passage penetrates through the lower surface of the top seat, and the tail end opening of the third L-shaped air passage penetrates through the rear surface of the top seat; the head end opening of the first straight air passage penetrates through the lower surface of the top seat, and the tail end opening of the first straight air passage penetrates through the upper surface of the top seat; the head end opening of the second straight air passage penetrates through the lower surface of the top seat, and the tail end opening of the second straight air passage penetrates through the upper surface of the top seat; the head end opening of the third straight air passage penetrates through the lower surface of the top seat, and the tail end opening of the third straight air passage penetrates through the upper surface of the top seat;

the left electromagnetic directional valve and the right electromagnetic directional valve are assembled in the opening of the U-shaped valve seat side by side, and the left electromagnetic directional valve and the right electromagnetic directional valve are both two-position five-way electromagnetic directional valves;

the first valve port of the left electromagnetic directional valve is communicated with the opening at the head end of the third straight air passage in a sealing way; the second valve port of the left electromagnetic directional valve is communicated with the opening at the head end of the second L-shaped air passage in a sealing way; the third valve port of the left electromagnetic directional valve is communicated with the opening at the head end of the fourth U-shaped air passage in a sealing way; the fourth valve port of the left electromagnetic directional valve is communicated with the opening at the head end of the first U-shaped air passage in a sealing way; the fifth valve port of the left electromagnetic directional valve is communicated with the opening at the head end of the first straight air passage in a sealing way;

the first valve port of the right electromagnetic directional valve is communicated with the opening at the head end of the third U-shaped air passage in a sealing way; the second valve port of the right electromagnetic directional valve is communicated with the opening at the head end of the second U-shaped air passage in a sealing way; a third valve port of the right electromagnetic directional valve is communicated with an opening at the head end of a third L-shaped air passage in a sealing way; the fourth valve port of the right electromagnetic directional valve is communicated with the opening at the head end of the first L-shaped air passage in a sealing way; and a fifth valve port of the right electromagnetic directional valve is communicated with an opening at the head end of the second straight air passage in a sealing manner.

When the air purifier works, the opening at the tail end of the third straight air passage is communicated with an air source. The tail end opening of the second L-shaped air passage is communicated with the left cylinder chamber of the double-acting cylinder. The tail end opening of the first L-shaped air passage is communicated with the right cylinder chamber of the double-acting cylinder.

The specific working process is as follows: firstly, a worker controls the left electromagnetic directional valve and the right electromagnetic directional valve to be electrified through an external control device (such as an MCC drawer switch), so that the first valve port of the left electromagnetic directional valve is communicated with the second valve port and the fourth valve port is communicated with the fifth valve port on one hand, and the first valve port of the right electromagnetic directional valve is communicated with the second valve port and the fourth valve port is communicated with the fifth valve port on the other hand. At the moment, air from an air source enters a left cylinder chamber of the double-acting cylinder through the third straight air passage, the first valve port of the left electromagnetic directional valve, the second valve port of the left electromagnetic directional valve and the second L-shaped air passage in sequence, so that a piston of the double-acting cylinder is pushed to move rightwards (the air in the right cylinder chamber of the double-acting cylinder is discharged outwards through the first L-shaped air passage, the fourth valve port of the right electromagnetic directional valve, the fifth valve port of the right electromagnetic directional valve and the second straight air passage in sequence), and the ESD valve is driven to be opened. After the ESD valve is opened, the gas turbine set and the equipment in the natural gas pressure regulating station can start to operate. In the operation process, when a gas turbine unit suddenly fails or equipment in a natural gas pressure regulating station suddenly leaks, a worker controls the left electromagnetic directional valve and the right electromagnetic directional valve to lose power through external control equipment, so that the first valve port of the left electromagnetic directional valve is communicated with the fourth valve port, the second valve port of the left electromagnetic directional valve is communicated with the third valve port, and the first valve port of the right electromagnetic directional valve is communicated with the fourth valve port, and the second valve port of the right electromagnetic directional valve is communicated with the third valve port. At the moment, air from an air source sequentially passes through the third straight air passage, the first valve port of the left electromagnetic directional valve, the fourth valve port of the left electromagnetic directional valve, the first U-shaped air passage, the third U-shaped air passage, the first valve port of the right electromagnetic directional valve, the fourth valve port of the right electromagnetic directional valve and the first L-shaped air passage to enter the right cylinder chamber of the double-acting cylinder, so that the piston of the double-acting cylinder is pushed to move leftwards (the air in the left cylinder chamber of the double-acting cylinder sequentially passes through the second L-shaped air passage, the second valve port of the left electromagnetic directional valve, the third valve port of the left electromagnetic directional valve, the fourth U-shaped air passage, the second valve port of the right electromagnetic directional valve, the third valve port of the right electromagnetic directional valve and the third L-shaped air passage to be discharged outwards), and the ESD valve is driven to be closed.

When the gas turbine set and the equipment in the natural gas pressure regulating station normally operate, if the left electromagnetic directional valve suddenly fails (namely, the left electromagnetic directional valve suddenly loses power, the first valve port and the fourth valve port of the left electromagnetic directional valve are communicated, and the second valve port and the third valve port are communicated), air from a gas source sequentially enters the left cylinder chamber of the double-acting cylinder through the third straight air passage, the first valve port of the left electromagnetic directional valve, the fourth valve port of the left electromagnetic directional valve, the first U-shaped air passage, the third U-shaped air passage, the first valve port of the right electromagnetic directional valve, the second U-shaped air passage, the fourth U-shaped air passage, the third valve port of the left electromagnetic directional valve, the second valve port of the left electromagnetic directional valve and the second L-shaped air passage, so that the piston of the double-acting cylinder remains motionless (air in the right cylinder chamber of the double-acting cylinder sequentially passes through the first L-shaped air passage, the fourth valve port of the right electromagnetic directional valve, the second valve, the third valve, the second valve port of the right electromagnetic directional valve, the left electromagnetic directional valve, the right air passage, the left electromagnetic directional valve, the right cylinder chamber of the double-acting cylinder, the right cylinder chamber of the double-acting cylinder, and the double-acting cylinder, The fifth valve port of the right electromagnetic directional valve and the second straight air passage are discharged outwards), so that the ESD valve is kept open.

When the equipment in the gas turbine set and the natural gas pressure regulating station normally operates, if the right electromagnetic directional valve suddenly fails (namely, the right electromagnetic directional valve suddenly loses power, the first valve port and the fourth valve port of the right electromagnetic directional valve are communicated, and the second valve port and the third valve port are communicated), then the air from the air source enters the left cylinder chamber of the double-acting cylinder through the third straight air passage, the first valve port of the left electromagnetic directional valve, the second valve port of the left electromagnetic directional valve and the second L-shaped air passage in sequence, therefore, the piston of the double-acting cylinder is kept still (air in the right cylinder chamber of the double-acting cylinder is discharged outwards through the first L-shaped air passage, the fourth valve port of the right electromagnetic directional valve, the first valve port of the right electromagnetic directional valve, the third U-shaped air passage, the first U-shaped air passage, the fourth valve port of the left electromagnetic directional valve, the fifth valve port of the left electromagnetic directional valve and the first straight air passage in sequence), and the ESD valve is kept open.

Based on the process, compared with the prior ESD valve control technology, the high-reliability integrated electromagnetic valve for controlling the ESD valve of the gas turbine power plant realizes the redundant control of the ESD valve by adopting a brand new structure, thereby effectively improving the control reliability. Specifically, when the gas turbine set and the equipment in the natural gas pressure regulating station normally operate, even if one electromagnetic directional valve breaks down suddenly, the ESD valve can still be kept open, so that the ESD valve is effectively prevented from being closed abnormally, the natural gas source is effectively prevented from being shut off abnormally, and the equipment in the gas turbine set and the natural gas pressure regulating station is further prevented from being shut down abnormally.

The invention has reasonable structure and ingenious design, effectively solves the problem of poor control reliability of the existing ESD valve control technology, and is suitable for a gas turbine power plant.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the present invention.

Fig. 3 is a schematic perspective view of the base of the present invention.

Fig. 4 is a schematic perspective view of the base of the present invention.

Fig. 5 is a schematic perspective view of the top seat of the present invention.

Fig. 6 is a perspective view of the top seat of the present invention.

Fig. 7 is a schematic perspective view of the left electromagnetic directional valve and the right electromagnetic directional valve in the present invention.

Fig. 8 is a schematic perspective view of the left and right electromagnetic directional valves according to the present invention.

Fig. 9 is a control schematic of the present invention.

In the figure: 1-a base, 101 a-a head end opening of a first U-shaped air passage, 101 b-a tail end opening of the first U-shaped air passage, 102 a-a head end opening of a second U-shaped air passage, 102 b-a tail end opening of the second U-shaped air passage, 103 a-a head end opening of a first L-shaped air passage, 103 b-a tail end opening of the first L-shaped air passage, 104 a-a head end opening of the second L-shaped air passage, 104 b-a tail end opening of the second L-shaped air passage, 105 b-a tail end opening of a first straight detection pore passage, 106 b-a tail end opening of a second straight detection pore passage, 107-a first blind screw hole and 108-a first positioning blind hole; 2-top seat, 201 a-head end opening of a third U-shaped air passage, 201 b-tail end opening of a third U-shaped air passage, 202 a-head end opening of a fourth U-shaped air passage, 202 b-tail end opening of a fourth U-shaped air passage, 203 a-head end opening of a third L-shaped air passage, 203 b-tail end opening of a third L-shaped air passage, 204 a-head end opening of a first straight air passage, 204 b-tail end opening of the first straight air passage, 205 a-head end opening of a second straight air passage, 205 b-tail end opening of the second straight air passage, 206 a-head end opening of a third straight air passage, 206 b-tail end opening of a third straight air passage, 207 b-tail end opening of a third straight detection duct, 208 b-tail end opening of a fourth straight detection duct, 209 b-tail end opening of a fifth straight detection duct, 210 b-a tail end opening of a sixth straight detection pore channel, 211-a counter sink, 212-a second positioning blind hole, 213-a second blind screw hole; 3-a left electromagnetic directional valve, 3 a-a first valve port of the left electromagnetic directional valve, 3 b-a second valve port of the left electromagnetic directional valve, 3 c-a third valve port of the left electromagnetic directional valve, 3 d-a fourth valve port of the left electromagnetic directional valve, 3 e-a fifth valve port of the left electromagnetic directional valve, and 3 f-a mounting hole of the left electromagnetic directional valve; 4-right electromagnetic directional valve, 4 a-first valve port of the right electromagnetic directional valve, 4 b-second valve port of the right electromagnetic directional valve, 4 c-third valve port of the right electromagnetic directional valve, 4 d-fourth valve port of the right electromagnetic directional valve, 4 e-fifth valve port of the right electromagnetic directional valve, and 4 f-mounting hole of the right electromagnetic directional valve; 5-left ear plate; 6-front ear plate; 7-rear ear plate; 801-the left side chamber of the double acting cylinder, 802-the right side chamber of the double acting cylinder, 803-the piston of the double acting cylinder.

Detailed Description

A high-reliability integrated electromagnetic valve for controlling an ESD valve of a gas turbine power plant comprises a base 1, a top seat 2, a left electromagnetic directional valve 3 and a right electromagnetic directional valve 4;

wherein, the base 1 is in an L-shaped block structure; the top seat 2 is a rectangular block structure; the base 1 and the top seat 2 are spliced together to form a U-shaped valve seat with an opening facing to the left;

a first U-shaped air passage, a second U-shaped air passage, a first L-shaped air passage and a second L-shaped air passage are respectively arranged in the base 1;

a head end opening 101a of the first U-shaped air passage penetrates through the upper surface of the horizontal section of the base 1, and a tail end opening 101b of the first U-shaped air passage penetrates through the upper surface of the vertical section of the base 1; the head end opening 102a of the second U-shaped air passage penetrates through the upper surface of the horizontal section of the base 1, and the tail end opening 102b penetrates through the upper surface of the vertical section of the base 1; the head end opening 103a of the first L-shaped air passage penetrates through the upper surface of the horizontal section of the base 1, and the tail end opening 103b penetrates through the front surface of the horizontal section of the base 1; a head end opening 104a of the second L-shaped air passage penetrates through the upper surface of the horizontal section of the base 1, and a tail end opening 104b penetrates through the rear surface of the horizontal section of the base 1;

a third U-shaped air passage, a fourth U-shaped air passage, a third L-shaped air passage, a first straight air passage, a second straight air passage and a third straight air passage are respectively arranged in the top seat 2;

the head end opening 201a and the tail end opening 201b of the third U-shaped air passage both penetrate through the lower surface of the top seat 2, and the tail end opening 201b of the third U-shaped air passage is communicated with the tail end opening 101b of the first U-shaped air passage in a sealing manner; the head end opening 202a and the tail end opening 202b of the fourth U-shaped air passage both penetrate through the lower surface of the top seat 2, and the tail end opening 202b of the fourth U-shaped air passage is communicated with the tail end opening 102b of the second U-shaped air passage in a sealing manner; the head end opening 203a of the third L-shaped air passage penetrates through the lower surface of the top seat 2, and the tail end opening 203b of the third L-shaped air passage penetrates through the rear surface of the top seat 2; the head end opening 204a of the first straight air passage penetrates through the lower surface of the top seat 2, and the tail end opening 204b penetrates through the upper surface of the top seat 2; the head end opening 205a of the second straight air passage penetrates through the lower surface of the top seat 2, and the tail end opening 205b penetrates through the upper surface of the top seat 2; the head end opening 206a of the third straight air passage penetrates through the lower surface of the top seat 2, and the tail end opening 206b penetrates through the upper surface of the top seat 2;

the left electromagnetic directional valve 3 and the right electromagnetic directional valve 4 are assembled in the opening of the U-shaped valve seat side by side, and the left electromagnetic directional valve 3 and the right electromagnetic directional valve 4 are both two-position five-way electromagnetic directional valves;

the first valve port 3a of the left electromagnetic directional valve 3 is in sealed communication with the head end opening 206a of the third straight air passage; the second valve port 3b of the left electromagnetic directional valve 3 is in sealed communication with the head end opening 104a of the second L-shaped air passage; the third valve port 3c of the left electromagnetic directional valve 3 is in sealed communication with the head end opening 202a of the fourth U-shaped air passage; the fourth valve port 3d of the left electromagnetic directional valve 3 is hermetically communicated with the head end opening 101a of the first U-shaped air passage; the fifth valve port 3e of the left electromagnetic directional valve 3 is in sealed communication with the head end opening 204a of the first straight air passage;

the first valve port 4a of the right electromagnetic directional valve 4 is in sealed communication with the head end opening 201a of the third U-shaped air passage; the second valve port 4b of the right electromagnetic directional valve 4 is in sealed communication with the head end opening 102a of the second U-shaped air passage; the third valve port 4c of the right electromagnetic directional valve 4 is in sealed communication with the head end opening 203a of the third L-shaped air passage; the fourth valve port 4d of the right electromagnetic directional valve 4 is in sealed communication with the head end opening 103a of the first L-shaped air passage; the fifth valve port 4e of the right electromagnetic directional valve 4 is in sealed communication with the head end opening 205a of the second straight air passage.

A first straight detection pore channel and a second straight detection pore channel are respectively arranged in the base 1; the head end opening of the first straight detection pore passage penetrates through the corner of the first U-shaped air passage, and the tail end opening 105b penetrates through the right surface of the base 1; the head end opening of the second straight detecting duct penetrates through the corner of the second U-shaped air duct, and the tail end opening 106b penetrates through the right surface of the base 1. When the device works, a plug is respectively embedded in the tail end opening of the first straight detection pore channel and the tail end opening of the second straight detection pore channel. When the first U-shaped air passage needs to be detected, the plug in the opening at the tail end of the first straight detection pore passage is detached. When the second U-shaped air passage needs to be detected, the plug in the opening at the tail end of the second straight detection pore passage is detached.

A third straight detection pore channel, a fourth straight detection pore channel, a fifth straight detection pore channel and a sixth straight detection pore channel are respectively arranged in the top seat 2; the head end opening of the third straight detection pore passage penetrates through the corner of the third U-shaped air passage, and the tail end opening 207b penetrates through the front surface of the top seat 2; the head end opening of the fourth straight detection pore passage penetrates through the corner of the third U-shaped air passage, and the tail end opening 208b penetrates through the right surface of the top seat 2; the head end opening of the fifth straight detection pore passage penetrates through the corner of the fourth U-shaped air passage, and the tail end opening 209b penetrates through the right surface of the top seat 2; the head end opening of the sixth straight detecting hole channel penetrates through the corner of the fourth U-shaped air channel, and the tail end opening 210b penetrates through the rear surface of the top seat 2. When the device works, a plug is respectively embedded in the tail end opening of the third straight detection pore channel, the tail end opening of the fourth straight detection pore channel, the tail end opening of the fifth straight detection pore channel and the tail end opening of the sixth straight detection pore channel. When the third U-shaped air passage needs to be detected, the plug in the opening at the tail end of the third straight detection pore passage or the fourth straight detection pore passage is detached. When the fourth U-shaped air passage needs to be detected, the plug in the opening at the tail end of the fifth straight detection pore passage or the sixth straight detection pore passage is detached.

The device also comprises four first fastening bolts; four first blind screw holes 107 which are arranged in a rectangular shape are respectively formed in the upper surface of the vertical section of the base 1; four countersunk holes 211 which are arranged in a rectangular shape are respectively arranged between the upper surface and the lower surface of the top seat 2 in a penetrating way, and the four countersunk holes 211 are in one-to-one butt joint with the four first blind screw holes 107; the four first fastening bolts penetrate through the four countersunk holes 211 in a one-to-one correspondence manner, and the tail ends of the four first fastening bolts are screwed into the four first blind screw holes 107 in a one-to-one correspondence manner.

The positioning device also comprises two positioning pins; the upper surface of the vertical section of the base 1 is respectively provided with two first positioning blind holes 108 which are arranged left and right; the lower surface of the top seat 2 is respectively provided with two second positioning blind holes 212 which are arranged left and right, and the two second positioning blind holes 212 are respectively butted with the two first positioning blind holes 108; the lower parts of the two positioning pins are respectively arranged in the two first positioning blind holes 108 in a penetrating manner; the upper parts of the two positioning pins respectively penetrate through the two second positioning blind holes 212.

The device also comprises four second fastening bolts; the lower surface of the top seat 2 is respectively provided with four second blind screw holes 213; two mounting holes 3f of the left electromagnetic directional valve 3 are respectively butted with two second blind screw holes 213; two mounting holes 4f of the right electromagnetic directional valve 4 are respectively butted with the other two second blind screw holes 213; two second fastening bolts respectively penetrate through the two mounting holes 3f of the left electromagnetic directional valve 3, and the tail ends of the two second fastening bolts are respectively screwed in the two second blind screw holes 213; the other two second fastening bolts respectively penetrate through the two mounting holes 4f of the right electromagnetic directional valve 4, and the tail ends of the two second fastening bolts are respectively screwed in the other two second blind screw holes 213.

A left ear plate 5 extends from the middle part of the lower edge of the left surface of the horizontal section of the base 1; a front ear plate 6 extends from the right part of the lower edge of the front surface of the base 1; the lower edge of the rear surface of the base 1 extends to the right to form a rear ear plate 7.

The left electromagnetic directional valve 3 and the right electromagnetic directional valve 4 both adopt AirTac 5V21008 type electromagnetic directional valves.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.