Steam isolation valve

Abstract

The present application relates to the valve of isolation, especially relates to the steam isolation valve, the present application provides steam isolation valve can quickly block steam, thereby protecting the internal structure of differential pressure transmitter. Steam isolation valve, including upper connecting pipe, steam isolation frame and lower connecting pipe etc.;The upper connecting pipe is fixedly connected in the gas outlet end of nitrogen differential pressure transmitter part and communicates with the gas outlet end of nitrogen differential pressure transmitter part, the steam isolation frame is fixedly connected in the lower end of upper connecting pipe and communicates with the lower end of upper connecting pipe, the lower connecting pipe is fixedly connected in the lower end of steam isolation frame and communicates with the lower end of steam isolation frame. By the bottom of double bevel sealing ring is blocked by lower plug disc, the upper plug disc blocks the upper part in steam isolation frame, steam isolation frame, double bevel sealing ring, upper plug disc and lower plug disc form isolation cavity, so as to block steam to be transported to the internal structure of nitrogen differential pressure transmitter through upper connecting pipe, avoid the internal structure of nitrogen differential pressure transmitter to be destroyed by high temperature steam.

Description

Technical Field

[0001] This invention relates to isolation valves, and more particularly to steam isolation valves. Background Technology

[0002] The CPS-NG system is a new type of automated control system for coke oven tops in China. It improves the working environment at the top of the coke oven, reduces emissions of pollutants such as coke oven flue gas, maintains constant pressure inside the carbonization chamber, and helps extend the service life of the coke oven. The CPS-NG system includes two parts: steam purging and nitrogen purging. Typically, steam and nitrogen purging are conducted through the same purging pipe. During steam purging, steam can divert into the differential pressure transmitter, potentially damaging it. Therefore, an isolation device needs to be added between the steam purging tee and the differential pressure transmitter to instantly and automatically block steam, preventing it from entering the pressure measuring device of the differential pressure transmitter. This protects the internal structure of the differential pressure transmitter, ensuring stable operation while allowing for normal steam purging. Summary of the Invention

[0003] To overcome the drawback of steam diversion into the differential pressure transmitter in the CPS-NG system, which can easily damage the differential pressure transmitter, this invention provides a steam isolation valve that can quickly block steam, thereby protecting the internal structure of the differential pressure transmitter.

[0004] The technical implementation scheme of the present invention is as follows: a steam isolation valve, comprising an upper connecting pipe, a steam isolation frame, a lower connecting pipe, an isolation component, and a limiting support component. The upper connecting pipe is fixedly connected to and communicates with the outlet end of the nitrogen differential pressure transmitter. The steam isolation frame is fixedly connected to and communicates with the lower end of the upper connecting pipe. The steam isolation frame is made of stainless steel. The lower connecting pipe is fixedly connected to and communicates with the lower end of the steam isolation frame. The connecting elbow is fixedly connected to and communicates with the lower end of the lower connecting pipe. The oblique tee is fixedly connected to and communicates with the lower end of the connecting elbow. The steam purging pipe is fixedly connected to and communicates with the oblique tee. The steam conveying component is disposed on and communicates with the oblique tee. The isolation component is disposed inside the steam isolation frame. The limiting support component is disposed inside the steam isolation frame and is connected to the upper connecting pipe.

[0005] As a preferred embodiment of the present invention, the isolation assembly includes a double-sloping sealing ring, a limiting support frame, a sliding rod, an upper blocking plate, and a lower blocking plate. The double-sloping sealing ring is fixedly connected to the lower part of the steam isolation frame and is made of stainless steel. The limiting support frame is fixedly connected to the steam isolation frame. The sliding rod is slidably connected to the limiting support frame and passes through the double-sloping sealing ring. The upper blocking plate is fixedly connected to the upper end of the sliding rod, and the lower blocking plate is fixedly connected to the lower end of the sliding rod. The lower blocking plate is located below the double-sloping sealing ring. Both the upper and lower blocking plates are made of PEEK material.

[0006] As a preferred embodiment of the present invention, the limiting support assembly includes a sliding bracket, a return spring, a slider, and a locking rod. The sliding bracket is slidably connected to the steam isolation frame, and two return springs are connected between the sliding bracket and the steam isolation frame. The slider is fixedly connected to one end of the sliding bracket and is slidably connected to the upper connecting pipe. The locking rod is fixedly connected to the sliding rod and is located below the other end of the sliding bracket.

[0007] As a preferred embodiment of the present invention, it further includes an active closing component, which is disposed on the steam isolation frame. The active closing component includes an opening limiting block, a slotted pressing frame, and a transmission column. The opening limiting block is fixedly connected to the steam isolation frame and is located below the sliding bracket. The slotted pressing frame is slidably connected to the opening limiting block and passes through the steam isolation frame. The slotted pressing frame has a slanted groove. The transmission column is fixedly connected to the sliding rod and is slidably connected to the slanted groove on the slotted pressing frame.

[0008] As a preferred embodiment of the present invention, it further includes a discharge assembly, which is disposed on a double-sloping sealing ring and connected to a steam isolation frame. The discharge assembly includes a partition ring, an L-shaped blocking rod, and a water outlet pipe. The partition ring is fixed to the upper side of the double-sloping sealing ring, and a curved groove is formed on the double-sloping sealing ring. The L-shaped blocking rod is fixed to a sliding rod, and the lower end of the L-shaped blocking rod is located inside one end of the curved groove. The water outlet pipe is fixed to the steam isolation frame and communicates with the other end of the curved groove.

[0009] As a preferred embodiment of the present invention, it further includes a magnet frame and a magnet block. The magnet frame is fixedly connected to the end of the slotted pressing frame away from the transmission column, and the magnet block is fixedly connected to the steam isolation frame. The magnet block is located below the opening limiting block. The magnet block has the opposite magnetism to the magnet frame and attracts the magnet frame.

[0010] As a preferred embodiment of the present invention, it further includes slide rails, sliding slotted rings, and support springs. Four slide rails are fixedly connected to the bottom of the lower blocking disc, and sliding slotted rings are slidably connected between the four slide rails. Several rectangular openings are opened on the upper part of the sliding slotted rings, and support springs are connected between the sliding slotted rings and the slide rails.

[0011] The beneficial effects of this invention are as follows:

[0012] 1. When steam purging is required, the operator controls the steam delivery component to deliver steam into the oblique tee, so that most of the steam is delivered from bottom to top to the lower part of the steam isolation frame. The steam will push the lower blocking plate to move upward. The upward movement of the lower blocking plate will drive the sliding rod and the upper blocking plate to move. The lower blocking plate is in close contact with the bottom of the double oblique sealing ring, and the lower blocking plate and the double oblique sealing ring will block the upward delivery of steam. The upper blocking plate is in close contact with the upper part of the steam isolation frame, and the upper blocking plate will block the upward delivery of a very small portion of steam in the cavity above the double oblique sealing ring in the steam isolation frame. The steam isolation frame, the double oblique sealing ring, the upper blocking plate and the lower blocking plate form an isolation cavity, thereby preventing steam from being delivered to the nitrogen differential pressure transmitter through the upper connecting pipe. This avoids damage to the internal structure of the nitrogen differential pressure transmitter by high-temperature steam, thereby stabilizing the pressure test of the nitrogen differential pressure transmitter. The sliding bracket limits the clamp rod, and in turn limits the sliding rod, the upper blocking plate and the lower blocking plate, thereby better isolating the steam.

[0013] 2. When the sliding rod moves upward, it will drive the L-shaped blocking rod to move upward. The L-shaped blocking rod separates from the bending groove. The steam isolation frame, double inclined sealing ring, upper blocking plate and lower blocking plate form an isolation cavity. A very small amount of steam in the isolation cavity cools and condenses into water and is discharged through the bending groove, thereby reducing the moisture present when nitrogen is introduced. The water left in the bending groove can play a sealing role, so that the isolation cavity of the steam isolation frame remains sealed.

[0014] 3. When the sliding rod moves upward, it drives the transmission column to move upward. The transmission column then drives the slotted pressing frame and the magnet frame to move. The magnet block attracts the magnet frame to move through magnetic force, thereby accelerating the movement speed of the magnet frame and the slotted pressing frame. The slotted pressing frame quickly pushes the transmission column, sliding rod, upper blocking plate, and lower blocking plate upward, reducing the time required for the transmission column, sliding rod, upper blocking plate, and lower blocking plate to move upward, improving the efficiency of steam isolation, and further protecting the internal structure of the nitrogen differential pressure transmitter component.

[0015] 4. The steam will simultaneously push the sliding slotted ring and the lower blocking disc upwards, increasing the thrust on the lower blocking disc and increasing the upward speed of the lower blocking disc and the sliding slotted ring, further improving the efficiency of steam isolation and further protecting the internal structure of the nitrogen differential pressure transmitter. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 For the present invention Figure 1 A magnified three-dimensional structural diagram of A in the middle.

[0018] Figure 3 This is a first cross-sectional three-dimensional structural diagram of the isolation component of the present invention.

[0019] Figure 4 This is a second cross-sectional perspective view of the isolation component of the present invention.

[0020] Figure 5 For the present invention Figure 4 A magnified three-dimensional structural diagram of B.

[0021] Figure 6 This is a three-dimensional structural diagram of the slide rail rod and the sliding slotted ring of the present invention.

[0022] Figure 7 This is a three-dimensional structural diagram of the slide rail rod, sliding slotted ring, and support spring of the present invention.

[0023] Figure 8 This is a partial three-dimensional structural diagram of the isolation component of the present invention.

[0024] Figure 9 This is a three-dimensional structural diagram of the sliding slotted ring of the present invention.

[0025] In the attached diagram, the following labels are used: 1: Nitrogen differential pressure transmitter; 21: Upper connecting pipe; 22: Steam isolation frame; 23: Lower connecting pipe; 201: Connecting bend; 202: Slanted tee; 203: Steam purging pipe; 204: Steam conveying component; 31: Double-slanted sealing ring; 32: Limiting support frame; 33: Sliding rod; 34: Upper blocking disc; 35: Lower blocking disc; 41: Sliding bracket; 42: Return spring; 43: Slider; 44: Clamping rod; 51: Opening limiting block; 52: Slotted pressing frame; 53: Transmission column; 61: Isolation ring; 62: Bending groove; 63: L-shaped blocking rod; 64: Water outlet pipe; 71: Magnet frame; 72: Magnet block; 81: Slide rail rod; 82: Sliding slotted ring; 83: Support spring. Detailed Implementation

[0026] To facilitate understanding of the present invention by those skilled in the art, the present invention will be further described below with reference to specific embodiments. It should be understood that the embodiments of the present invention are explanations of the present invention and are not intended to limit the scope of protection of the present invention.

[0027] Example 1

[0028] Steam isolation valve, such as Figures 1-5 As shown, the device includes an upper connecting pipe 21, a steam isolation frame 22, a lower connecting pipe 23, an isolation assembly, and a limiting support assembly. The upper connecting pipe 21 is fixed to and communicates with the outlet end of the nitrogen differential pressure transmitter 1. The upper connecting pipe 21 is vertically arranged. The steam isolation frame 22 is fixed to and communicates with the lower end of the upper connecting pipe 21. The steam isolation frame 22 is made of stainless steel. The lower connecting pipe 23 is fixed to and communicates with the lower end of the steam isolation frame 22. The connecting elbow 201 is fixed to and communicates with the lower end of the lower connecting pipe 23. 201 is connected, the oblique tee 202 is fixed to the lower end of the connecting bend 201 and is connected to the lower end of the connecting bend 201, the steam purging pipe 203 is fixed to the lower end of the oblique tee 202 and is connected to the oblique tee 202, the steam conveying component 204 is disposed on the oblique tee 202 and is connected to the oblique tee 202, the steam conveying component 204 is used to convey steam, the isolation component is disposed inside the steam isolation frame 22, the isolation component is used to prevent steam from entering the nitrogen differential pressure transmitter 1, the limiting support component is disposed inside the steam isolation frame 22, and the limiting support component is connected to the upper connecting pipe 21.

[0029] The isolation assembly includes a double-sloping sealing ring 31, a limiting support frame 32, a sliding rod 33, an upper blocking plate 34, and a lower blocking plate 35. The double-sloping sealing ring 31 is welded to the lower part of the steam isolation frame 22, and has a through hole in the middle. The double-sloping sealing ring 31 is made of stainless steel. The limiting support frame 32 is fixed inside the steam isolation frame 22. The sliding rod 33 is slidably connected to the limiting support frame 32 and passes through the through hole in the middle of the double-sloping sealing ring 31. The upper blocking plate 34 is fixed to the upper end of the sliding rod 33 and is used to block the top of the steam isolation frame 22. The lower blocking plate 35 is fixed to the lower end of the sliding rod 33 and is located below the double-sloping sealing ring 31. The lower blocking plate 35 is used to block the bottom of the double-sloping sealing ring 31. Both the upper blocking plate 34 and the lower blocking plate 35 are made of PEEK material.

[0030] The limiting support assembly includes a sliding bracket 41, a return spring 42, a slider 43, and a locking rod 44. The sliding bracket 41 is slidably connected to the steam isolation frame 22. Two return springs 42 are connected between the sliding bracket 41 and the steam isolation frame 22 via hooks. The slider 43 is welded to one end of the sliding bracket 41 and is slidably connected to the upper connecting pipe 21. The locking rod 44 is fixed to the sliding rod 33 and is located below the other end of the sliding bracket 41. The locking rod 44 is used to limit the sliding bracket 41.

[0031] When steam purging is required, the operator controls the steam delivery component 204 to deliver steam into the oblique tee 202. Most of the steam then flows through the oblique tee 202 into the steam purging pipe 203, and is discharged from the lower end of the purging pipe 203. A small portion of the steam flows through the oblique tee 202 into the connecting bend 201, and then through the connecting bend 201 into the lower connecting pipe 23. Finally, the steam flows through the lower connecting pipe 23 into the lower part of the steam isolation frame 22. The upward conveying of steam from the lower part of the isolation frame 22 pushes the lower blocking disc 35 upward. This upward movement of the lower blocking disc 35 causes the sliding rod 33 and the upper blocking disc 34 to move. Then, the lower blocking disc 35 comes into close contact with the bottom of the double-sloping sealing ring 31, preventing steam from being conveyed upward. The upper blocking disc 34 comes into close contact with the upper part of the steam isolation frame 22, preventing a very small portion of steam within the cavity above the double-sloping sealing ring 31 from flowing upward. The upper conveyor, the steam isolation frame 22, the double-sloping sealing ring 31, the upper blocking plate 34 and the lower blocking plate 35 form an isolation cavity, thereby preventing steam from being transported to the nitrogen differential pressure transmitter 1 through the upper connecting pipe 21, avoiding damage to the internal structure of the nitrogen differential pressure transmitter 1 by high-temperature steam, and thus stabilizing the pressure test of the nitrogen differential pressure transmitter 1. When the sliding rod 33 moves upward, it will drive the clamping rod 44 to move upward. The clamping rod 44 squeezes the sliding clamp 41 and moves it away from the sliding rod 33. The return spring 42 is stretched, and then the clamping rod 44 separates from the sliding clamp 41. The return spring 42 returns to its original position and drives the sliding clamp 41 to move and return to its original position. One end of the sliding clamp 41 moves to below the clamping rod 44, and the sliding clamp 41 limits the clamping rod 44, thereby limiting the sliding rod 33, the upper blocking plate 34 and the lower blocking plate 35. The isolation cavity formed by the steam isolation frame 22, the double-sloping sealing ring 31, the upper blocking plate 34 and the lower blocking plate 35 remains sealed, thereby better isolating steam.

[0032] When nitrogen purging is required, the operator controls the steam delivery component 204 to stop delivering steam into the oblique tee 202, and then controls the nitrogen differential pressure transmitter 1 to deliver nitrogen into the upper connecting pipe 21. The nitrogen squeeze slider 43 and sliding bracket 41 inside the upper connecting pipe 21 move away from the sliding rod 33, the return spring 42 is stretched, the sliding bracket 41 separates from the clamping rod 44, and the sliding rod 33, upper blocking plate 34, lower blocking plate 35 and clamping rod 44 return to their original position under gravity. Then the nitrogen is delivered to the steam isolation frame 22 through the upper connecting pipe 21, and then to the lower connecting pipe 23 through the steam isolation frame 22. Then it is delivered to the connecting bend 201 through the lower connecting pipe 23. The nitrogen is delivered to the oblique tee 202 through the connecting bend 201, and then to the steam purging pipe 203. The steam purging pipe 203 then discharges the nitrogen.

[0033] Example 2

[0034] Based on Example 1, such as Figures 4-5 As shown, it also includes an active closing component, which is disposed on the steam isolation frame 22. The active closing component facilitates blocking the steam isolation frame 22 when it is necessary to stop nitrogen purging and steam purging. The active closing component includes an opening limiting block 51, a slotted pressing frame 52, and a transmission column 53. The opening limiting block 51 is bolted to the steam isolation frame 22 and is located below the sliding bracket 41. The slotted pressing frame 52 is slidably connected to the opening limiting block 51 and passes through the steam isolation frame 22. The slotted pressing frame 52 is horizontally arranged and has a slanted slot. The transmission column 53 is fixed to the sliding rod 33 and is slidably connected to the slanted slot on the slotted pressing frame 52.

[0035] When it is necessary to stop both nitrogen purging and steam purging, the operator presses the slotted pressing frame 52 and moves it towards the sliding rod 33. The slotted pressing frame 52 will drive the transmission column 53, the sliding rod 33, the upper blocking plate 34, and the lower blocking plate 35 to move upward. After the movement is completed, the steam isolation frame 22, the double inclined sealing ring 31, the upper blocking plate 34, and the lower blocking plate 35 form an isolation cavity, which can prevent residual steam or moisture in the pipeline from being transported upward to the nitrogen differential pressure transmitter 1, thus avoiding damage to the internal structure of the nitrogen differential pressure transmitter 1.

[0036] Example 3

[0037] Based on Example 2, such as Figure 5 As shown, it also includes a discharge assembly, which is disposed on the double-sloping sealing ring 31 and connected to the steam isolation frame 22. The discharge assembly is used to discharge a small amount of water in the steam isolation frame 22 to reduce the moisture present when nitrogen is introduced. The discharge assembly includes a partition ring 61, an L-shaped blocking rod 63, and a water outlet pipe 64. The partition ring 61 is welded to the upper side of the double-sloping sealing ring 31. The partition ring 61 is used to block water and prevent water from flowing out through the double-sloping sealing ring 31. The double-sloping sealing ring 31 has a curved groove 62. Initially, a certain amount of water is left in the curved groove 62 to seal the steam isolation frame 22. The L-shaped blocking rod 63 is welded to the sliding rod 33. The lower end of the L-shaped blocking rod 63 is located inside one end of the curved groove 62. The L-shaped blocking rod 63 is used to block the curved groove 62. The water outlet pipe 64 is fixed to the steam isolation frame 22 and is connected to the other end of the curved groove 62.

[0038] Initially, a certain amount of water remains inside the bending groove 62. When the sliding rod 33 moves upward, it will drive the L-shaped blocking rod 63 to move upward. The L-shaped blocking rod 63 separates from the bending groove 62, and the bending groove 62 is connected to the interior of the steam isolation frame 22. The steam isolation frame 22, the double inclined sealing ring 31, the upper blocking plate 34 and the lower blocking plate 35 form an isolation cavity. A very small amount of steam will cool and condense into water in the isolation cavity. The water in the cavity flows into the bending groove 62 under the action of gravity. The water overflowing from the bending groove 62 flows out through the water outlet pipe 64, thereby reducing the moisture present when nitrogen is introduced. The water remaining in the bending groove 62 can prevent the gas inside the isolation cavity of the steam isolation frame 22 from flowing out of the bending groove 62, and at the same time prevent external air from entering the isolation cavity of the steam isolation frame 22, thereby maintaining the airtightness of the isolation cavity of the steam isolation frame 22.

[0039] Example 4

[0040] Based on Example 3, such as Figure 5 As shown, it also includes a magnet frame 71 and a magnet block 72. The magnet frame 71 is welded to the end of the slotted pressing frame 52 away from the transmission column 53. The magnet block 72 is welded to the steam isolation frame 22. The magnet block 72 is located below the opening limiting block 51. The magnet block 72 has the opposite magnetism to the magnet frame 71. The magnet block 72 will attract the magnet frame 71.

[0041] When the sliding rod 33 moves upward, it drives the transmission column 53 to move upward. The transmission column 53 pushes the slotted pressing frame 52 and the magnet frame 71 to move closer to the sliding rod 33. The magnet block 72 will attract the magnet frame 71 to move through magnetic force. The magnet frame 71 drives the slotted pressing frame 52 to move quickly closer to the sliding rod 33. The slotted pressing frame 52 quickly pushes the transmission column 53, the sliding rod 33, the upper blocking plate 34 and the lower blocking plate 35 to move upward, thereby reducing the time required for the transmission column 53, the sliding rod 33, the upper blocking plate 34 and the lower blocking plate 35 to move upward, improving the efficiency of steam isolation, and further protecting the internal structure of the nitrogen differential pressure transmitter component 1.

[0042] Example 5

[0043] Based on Example 1, such as Figures 6-9 As shown, it also includes slide rail rods 81, sliding slotted rings 82, and support springs 83. Four slide rail rods 81 are welded to the bottom of the lower blocking disc 35. The slide rail rods 81 are vertically arranged. Sliding slotted rings 82 are slidably connected between the four slide rail rods 81. Several rectangular openings are opened on the upper part of the sliding slotted rings 82. The support springs 83 are connected to the slide rail rods 81 through hooks.

[0044] As steam is conveyed upward from the lower part of the steam isolation frame 22, the steam pushes the sliding slotted ring 82 upward, which in turn pushes the lower blocking disc 35 upward. Simultaneously, the steam pushes the lower blocking disc 35 upward, increasing the thrust on the lower blocking disc 35 and increasing the upward speed of the lower blocking disc 35 and the sliding slotted ring 82. This further improves the efficiency of steam isolation and further protects the internal structure of the nitrogen differential pressure transmitter component 1. When nitrogen passes through the steam isolation frame 22, the nitrogen pushes the sliding slotted ring 82 downward, compressing the support spring 83. The nitrogen can then flow out from the rectangular opening at the upper part of the sliding slotted ring 82 without affecting the nitrogen discharge efficiency.

[0045] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A steam isolation valve, characterized in that, The system includes an upper connecting pipe (21), a steam isolation frame (22), a lower connecting pipe (23), an isolation assembly, and a limiting support assembly. The upper connecting pipe (21) is fixed to the outlet end of the nitrogen differential pressure transmitter (1) and communicates with the outlet end of the nitrogen differential pressure transmitter (1). The steam isolation frame (22) is fixed to the lower end of the upper connecting pipe (21) and communicates with the lower end of the upper connecting pipe (21). The steam isolation frame (22) is made of stainless steel. The lower connecting pipe (23) is fixed to the lower end of the steam isolation frame (22) and communicates with the lower end of the steam isolation frame (22). The system also includes a connecting elbow (201), a slanted tee (202), a steam purging pipe (203), and a steam conveying system. Component (204), the connecting bend (201) is fixed to the lower end of the lower connecting pipe (23) and communicates with the connecting bend (201), the oblique tee (202) is fixed to the lower end of the connecting bend (201) and communicates with the lower end of the connecting bend (201), the steam purging pipe (203) is fixed to the lower end of the oblique tee (202) and communicates with the oblique tee (202), the steam conveying component (204) is set on the oblique tee (202) and communicates with the oblique tee (202), the isolation component is set inside the steam isolation frame (22), the limiting support component is set inside the steam isolation frame (22), and the limiting support component is connected to the upper connecting pipe (21); The isolation assembly includes a double-sloping sealing ring (31), a limiting support frame (32), a sliding rod (33), an upper blocking plate (34), and a lower blocking plate (35). The double-sloping sealing ring (31) is fixed to the lower part of the steam isolation frame (22). The double-sloping sealing ring (31) is made of stainless steel. The limiting support frame (32) is fixed to the steam isolation frame (22). The sliding rod (33) is slidably connected to the limiting support frame (32). The sliding rod (33) passes through the double-sloping sealing ring (31). The upper blocking plate (34) is fixed to the upper end of the sliding rod (33). The lower blocking plate (35) is fixed to the lower end of the sliding rod (33). The lower blocking plate (35) is located below the double-sloping sealing ring (31). Both the upper blocking plate (34) and the lower blocking plate (35) are made of PEEK material.

2. The steam isolation valve as described in claim 1, characterized in that, The limiting support assembly includes a sliding bracket (41), a return spring (42), a slider (43), and a locking rod (44). The sliding bracket (41) is slidably connected to the steam isolation frame (22). Two return springs (42) are connected between the sliding bracket (41) and the steam isolation frame (22). The slider (43) is fixed to one end of the sliding bracket (41) and is slidably connected to the upper connecting pipe (21). The locking rod (44) is fixed to the sliding rod (33) and is located below the other end of the sliding bracket (41).

3. The steam isolation valve as described in claim 2, characterized in that, It also includes an active closing component, which is disposed on the steam isolation frame (22). The active closing component includes an opening limiting block (51), a slotted pressing frame (52), and a transmission column (53). The opening limiting block (51) is fixedly connected to the steam isolation frame (22) and is located below the sliding bracket (41). The slotted pressing frame (52) is slidably connected to the opening limiting block (51) and passes through the steam isolation frame (22). The slotted pressing frame (52) has a slanted groove. The transmission column (53) is fixedly connected to the sliding rod (33) and is slidably connected to the slanted groove on the slotted pressing frame (52).

4. The steam isolation valve as described in claim 3, characterized in that, It also includes a discharge assembly, which is disposed on a double-sloping sealing ring (31) and connected to a steam isolation frame (22). The discharge assembly includes a partition ring (61), an L-shaped blocking rod (63), and a water outlet pipe (64). The partition ring (61) is fixed to the upper side of the double-sloping sealing ring (31). A curved groove (62) is opened on the double-sloping sealing ring (31). The L-shaped blocking rod (63) is fixed to a sliding rod (33). The lower end of the L-shaped blocking rod (63) is located inside one end of the curved groove (62). The water outlet pipe (64) is fixed to the steam isolation frame (22) and is connected to the other end of the curved groove (62).

5. The steam isolation valve as described in claim 4, characterized in that, It also includes a magnet frame (71) and a magnet block (72). The magnet frame (71) is fixed to the end of the slotted pressing frame (52) away from the drive column (53). The magnet block (72) is fixed to the steam isolation frame (22). The magnet block (72) is located below the opening limiting block (51). The magnet block (72) has the opposite magnetism to the magnet frame (71). The magnet block (72) will attract the magnet frame (71).

6. The steam isolation valve as described in claim 5, characterized in that, It also includes slide rails (81), sliding slotted rings (82) and support springs (83). The bottom of the lower blocking disc (35) is fixedly connected to four slide rails (81), and the four slide rails (81) are slidably connected to each other by sliding slotted rings (82). The upper part of the sliding slotted rings (82) has several rectangular openings, and the sliding slotted rings (82) and the slide rails (81) are connected by support springs (83).

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