High pressure steam safety valve

Abstract

The application belongs to the technical field of device safety valve, and discloses a high-pressure steam safety valve, which comprises a conveying pipeline, two transmission assemblies are fixedly installed on the front and back sides of the conveying pipeline, and two adjusting assemblies are fixedly installed on the front and back sides of the conveying pipeline. Through the cooperation of the transmission assembly and the pressure reducing assembly and other structures, when steam enters the inside of the sealing shell, the inside of the sealing shell is in a closed state, at this time, the steam will push the display plate, the display plate drives the sealing plate to be in an upward state at the same time, because one side of the sealing plate is in a hinged state with the adjusting plate, the other side of the two adjusting plates can be moved upward at the same time, and the connecting assembly is pushed to move at the same time, so that the pressure reducing plate can affect the transportation amount of the steam in the conveying pipeline, the device can automatically control the transportation amount of the steam according to the steam pressure, and the steam transportation work can be carried out more safely.

Description

Technical Field

[0001] This invention belongs to the field of safety valve technology, specifically a high-pressure steam safety valve. Background Technology

[0002] High-pressure steam safety valves are widely used in industries such as power and chemical engineering. They are important special equipment to ensure the safe operation of thermal and power systems. Their main purpose is to control the pressure of steam output. Safety valves are mainly divided into two categories: spring-loaded and rod-loaded. There are also impulse safety valves, pilot-operated safety valves, safety switching valves, safety depressurization valves, and deadweight safety valves. Spring-loaded safety valves mainly rely on the force of a spring to work. Spring-loaded safety valves are further divided into closed and open types. Generally, closed types should be selected for flammable, explosive, or toxic media, while open types are often used for steam or inert gases. However, in current technology, most safety valves can only passively relieve pressure through their internal structure, and most safety valves cannot regulate steam pressure.

[0003] In existing technologies, the flow rate of steam inside the valve cannot be controlled. Depressurization is only achieved through its internal structure or manually when the internal steam pressure is too high. However, the internal structure of existing technologies cannot adjust the steam intake according to the internal steam pressure. Similarly, this depressurization method not only increases steam consumption but also poses a risk of skin burns when manually depressurizing, resulting in poor performance of existing technologies. Therefore, we provide a high-pressure steam safety valve. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a high-pressure steam safety valve. This solves the problem that in the prior art, the pressure relief method does not allow for control of the internal steam flow rate. Pressure relief is only achieved through the internal structure or manually when the internal steam pressure is too high, and the device itself cannot automatically reduce pressure. This method not only increases steam consumption but also poses a risk of burns during manual pressure relief, resulting in poor performance of the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-pressure steam safety valve, comprising a conveying pipeline, two transmission components fixedly installed on the front and rear sides of the conveying pipeline, two adjusting components fixedly installed on the front and rear sides of the conveying pipeline, two pressure reducing components movably engaged on the front and rear sides of the inner wall of the conveying pipeline, and a pressure relief component fixedly installed on the inner wall of the conveying pipeline.

[0006] Preferably, the adjusting assembly includes a second spring telescopic rod, which is fixedly installed with the conveying pipe. An adjusting rod is movably installed on the outer surface of the second spring telescopic rod. A linkage rod is hinged to the middle of the adjusting rod. Two racks are hinged to the front and rear sides of one side of the conveying pipe, and two third spring telescopic rods are fixedly installed on the front and rear sides of one side of the conveying pipe.

[0007] Preferably, one side of each of the two racks is serrated, and both the front and rear sides of the adjusting rod are serrated. One side of each of the two racks meshes with the front and rear sides of the adjusting rod, and the other side of each of the two spring telescopic rods is fixedly installed to one side of the racks.

[0008] Preferably, the transmission assembly includes a sealed housing, which is fixedly connected to one side of the conveying pipe. A connecting plate is movably engaged inside the sealed housing, and a linkage plate is fixedly installed at the bottom of the connecting plate. Two spring telescopic rods are fixedly installed at the front and rear ends of the inner wall of the sealed housing, and a display panel is fixedly installed at the top of the two spring telescopic rods.

[0009] Preferably, the middle part of the display panel is movably sleeved with the top of the sealing shell, the bottom of the sealing shell is provided with an opening groove, the interior of the sealing shell is connected to the interior of the conveying pipe through the opening groove, and the connecting plate is movable on one side of the inner wall of the opening groove.

[0010] Preferably, the pressure reducing assembly includes a sealing plate, which is movably engaged with one side of the inner wall of the conveying pipe. An adjusting plate is hinged to the middle of one side of the sealing plate, and a connecting assembly is hinged to the top of the adjusting plate. A pressure reducing plate is movably installed on one side of the connecting assembly.

[0011] Preferably, there are two adjusting plates, which are respectively distributed at the top and bottom of the connecting assembly. The bottom of the pressure reducing plate is hinged to the inner wall of the conveying pipe, and the other side of the sealing plate is fixedly installed to one side of the display panel.

[0012] Preferably, the pressure relief assembly includes two connecting plates, which are movably installed on the front and rear sides of the inner wall of the conveying pipe, respectively. Two pressure relief plates are fixedly installed on the top of each of the two connecting plates. There are four pressure relief plates, which are arranged in groups of two. Each group of pressure relief plates is distributed at the front and rear ends of the top of the two connecting plates. Each group of pressure relief plates is movably installed on the inner wall of the conveying pipe. A spring is fixedly installed on the top of each group of pressure relief plates, and the top of the spring is fixedly installed on the inner wall of the conveying pipe.

[0013] Preferably, two pressure relief grooves are respectively opened at the front and rear ends of the inner wall of the conveying pipeline, and there are four pressure relief grooves in total, with each pair forming a group. Each group of pressure relief grooves is distributed on one side of each group of pressure relief plates.

[0014] Preferably, a plurality of graduated grooves are equidistantly opened on one side of the conveying pipe, the graduated grooves being located on the front and rear sides of the display panel respectively, and the top of the adjusting plate being hinged to the connecting plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] This invention, through the coordinated arrangement of transmission and pressure-reducing components, allows steam to enter the sealed housing. Since the interior of the sealed housing is closed, the steam pushes the display panel. When the steam pressure exceeds the elastic coefficient of the spring extension rod, the display panel simultaneously causes the sealing plate to rise. Because one side of the sealing plate is hinged to the adjusting plate, and the other adjusting plate is hinged to the connecting plate and fixed in position, the movement of the sealing plate causes the other sides of both adjusting plates to move upwards simultaneously, pushing the connecting component to move as well. Since one side of the pressure-reducing plate is hinged to the inner wall of the conveying pipe, the pressure-reducing plate is rotated by the connecting component, thus affecting the amount of steam transported within the conveying pipe. Furthermore, the device can automatically control the amount of steam transported based on the steam pressure, thereby enabling safer steam transport operations.

[0017] This invention utilizes a combination of adjusting and transmitting components. Steam inside the sealed housing drives the display panel, which in turn moves the adjusting plate. The display panel and a spring-loaded telescopic rod are connected via a spring. Since the sealed housing and the conveying pipe are in communication and share the same pressure, when the pressure inside the conveying pipe exceeds the spring's elasticity, the pressure-reducing plate moves, pushing the pressure-relieving plate along with the adjusting plate. A pressure-relieving groove is located on one side of the conveying pipe's inner wall near the pressure-relieving plate. When the pressure-relieving plate is no longer covering the groove, steam inside the conveying pipe is released through it, further improving pressure relief. After pressure relief, the spring returns the device to its original position, enhancing operational stability.

[0018] This invention, through the cooperation of structures such as conveying pipes and transmission components, allows for real-time monitoring of the pressure of steam inside the conveying pipe by the scale grooves on both sides of the conveying pipe, since the top of the display panel and the spring telescopic rod are in a movable through-hole state. Furthermore, it can help the operator to better detect the internal pressure of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0020] Figure 2 This is a schematic diagram showing the structural cooperation between the transmission component and the adjustment component of the present invention;

[0021] Figure 3 This is a schematic diagram showing the fit between the conveying pipe and the sealing shell structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the present invention.

[0023] Figure 5 This is a schematic diagram showing the structural cooperation between the adjustment component and the transmission component of the present invention;

[0024] Figure 6 This is a schematic diagram showing the structural cooperation between the transmission component and the pressure reducing component of the present invention;

[0025] Figure 7 This is a schematic diagram showing the positional fit of the main structure of the transmission component of the present invention;

[0026] Figure 8 This is a schematic diagram of the planar structure of the transmission component and the adjustment component of the present invention.

[0027] Figure 9 This is a schematic diagram showing the structural cooperation between the pressure relief component and the pressure reduction component of the present invention;

[0028] Figure 10 This is a schematic diagram showing the positional fit between the pressure relief component and the main structure of the conveying pipeline of the present invention;

[0029] Figure 11 This is a schematic diagram showing the positional fit between the pressure-reducing component and the pressure-relieving component of the present invention.

[0030] In the diagram: 1. Conveying pipeline; 2. Transmission assembly; 201. Sealing shell; 202. Linkage plate; 203. Connecting plate; 204. Spring telescopic rod one; 205. Display panel; 3. Adjustment assembly; 301. Linkage rod; 302. Spring telescopic rod two; 303. Adjusting rod; 304. Rack; 305. Spring telescopic rod three; 4. Pressure relief assembly; 401. Spring; 402. Pressure relief plate; 403. Connecting plate; 5. Pressure reduction assembly; 501. Sealing plate; 502. Connecting assembly; 503. Adjusting plate; 504. Pressure reducing plate. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figures 1 to 11 As shown, the present invention provides a high-pressure steam safety valve, including a conveying pipe 1, two transmission components 2 fixedly installed on the front and rear sides of the conveying pipe 1, two adjusting components 3 fixedly installed on the front and rear sides of the conveying pipe 1, two pressure reducing components 5 movably snapped onto the front and rear sides of the inner wall of the conveying pipe 1, a pressure relief component 4 fixedly installed on the inner wall of the conveying pipe 1, and a plurality of scale grooves equidistantly opened on one side of the conveying pipe 1, the scale grooves being located on the front and rear sides of the display plate 205 respectively, and the top of the adjusting plate 503 being hinged to the connecting plate 403.

[0033] The above solution is adopted because the top of the display panel 205 and the spring telescopic rod 204 are in a movable through-state. When the steam inside the sealed housing 201 pushes the display panel 205 to move, the pressure value of the steam inside the conveying pipe 1 can be read through the scale grooves on both sides of the conveying pipe 1. When the pressure inside the conveying pipe 1 decreases, the position of the display panel 205 drops at the same time. Furthermore, the device can display the real-time value of the steam pressure inside the conveying pipe 1 and help the operator better monitor the steam pressure.

[0034] like Figure 4 , Figure 5 , Figure 8 As shown, the adjusting assembly 3 includes a second spring telescopic rod 302, which is fixedly installed with the conveying pipe 1. An adjusting rod 303 is movably installed on the outer surface of the second spring telescopic rod 302. A linkage rod 301 is hinged to the middle of the adjusting rod 303. Two racks 304 are hinged to the front and rear sides of one side of the conveying pipe 1, respectively. Two third spring telescopic rods 305 are fixedly installed on the front and rear sides of one side of the conveying pipe 1, respectively. One side of each rack 304 is serrated, and the front and rear sides of the adjusting rod 303 are also serrated. One side of each rack 304 meshes with the front and rear sides of the adjusting rod 303, respectively. The other side of each third spring telescopic rod 305 is fixedly installed with one side of each rack 304. By moving the two connecting plates 403 outward, the adjusting rod 303 can be made to move, thereby affecting the air intake of the sealing shell 201. Furthermore, it can simultaneously affect the working state of the transmission assembly 2 and the pressure reducing assembly 5.

[0035] The above solution is adopted as follows: By pushing one side of the adjusting rod 303, since one side of the adjusting rod 303 is hinged to one side of the linkage rod 301, and the other side of the linkage rod 301 is also hinged to the linkage plate 202, but the position of the linkage plate 202 is fixed horizontally and can only move vertically, the other side of the linkage rod 301 drives the linkage plate 202 to move upward. At the same time as the linkage plate 202 moves, the connecting plate 203 also moves. At this time, the air pressure inside the sealed shell 201 can be controlled to a certain extent. When the adjusting rod 303 is no longer pushed, the extension force of the two spring telescopic rods 305 can make one side of the rack 304 engage with one side of the adjusting rod 303. Since the teeth of the adjusting rod 303 and the rack 304 are interlocked, the adjusting rod 303 is in a fixed state at this time.

[0036] like Figure 5 , Figure 6 , Figure 8 , Figure 9 As shown, the transmission assembly 2 includes a sealed housing 201, which is fixedly inserted through one side of the conveying pipe 1. A connecting plate 203 is movably engaged inside the sealed housing 201. A linkage plate 202 is fixedly installed at the bottom of the connecting plate 203. Two spring telescopic rods 204 are fixedly installed at the front and rear ends of the inner wall of the sealed housing 201, respectively. A display panel 205 is fixedly installed at the top of the two spring telescopic rods 204. The middle part of the display panel 205 is movably sleeved with the top of the sealed housing 201. An opening groove is provided at the bottom of the sealed housing 201, and the interior of the sealed housing 201 is connected to the conveying pipe 1 through the opening groove. The interior of pipe 1 is interconnected. Connecting plate 203 is movable on one side of the inner wall of the opening groove. Pressure reducing assembly 5 includes sealing plate 501. Sealing plate 501 is movably engaged with one side of the inner wall of conveying pipe 1. Adjusting plate 503 is hinged to the middle of one side of sealing plate 501. Connecting assembly 502 is hinged to the top of adjusting plate 503. Pressure reducing plate 504 is movably installed on one side of connecting assembly 502. There are two adjusting plates 503, which are respectively distributed at the top and bottom of connecting assembly 502. The bottom of pressure reducing plate 504 is hinged to the inner wall of conveying pipe 1. The other side of sealing plate 501 is fixedly installed on one side of display plate 205.

[0037] Using the above scheme: When steam enters the interior of the sealed housing 201, since the interior of the sealed housing 201 is in a closed state, the steam will push the display panel 205. When the steam pressure is greater than the elastic coefficient of the spring extension rod 204, the display panel 205 simultaneously drives the sealing plate 501 to rise. Since one side of the sealing plate 501 is hinged to the adjusting plate 503, and the other adjusting plate 503 is hinged to the connecting plate 403, when the steam pressure inside the conveying pipe 1 is less than the elastic coefficient of the connecting plate 403, the positions of the connecting plate 403 and the adjusting plate 503 are fixed. At this time, by moving the sealing plate 501, the other side of both adjusting plates 503 can move upward simultaneously, and simultaneously push the connecting assembly. When component 502 moves, since one side of the pressure reducing plate 504 is hinged to the inner wall of the conveying pipe 1, the pressure reducing plate 504 will be pushed and rotated by the connecting component 502, thereby causing the central part of the connecting component 502 to move, thus blocking the volume of steam passing through the inside of the conveying pipe 1. This allows the pressure reducing plate 504 to affect the amount of steam transported inside the conveying pipe 1. When the pressure inside the conveying pipe 1 decreases, the display plate 205 can be gradually lowered by the pull of the spring telescopic rod 204, thereby affecting the position of the pressure reducing plate 504. Furthermore, the device can automatically control the amount of steam transported according to the steam pressure, thus enabling safer steam transport operations.

[0038] like Figure 10 , Figure 11 As shown, the pressure relief assembly 4 includes two connecting plates 403, which are movably installed on the front and rear sides of the inner wall of the conveying pipe 1, respectively. Two pressure relief plates 402 are fixedly installed on the top of the two connecting plates 403, and there are four pressure relief plates 402, which are arranged in groups of two. Each group of pressure relief plates 402 is distributed at the front and rear ends of the top of the two connecting plates 403, and each group of pressure relief plates 402 is movably installed on the inner wall of the conveying pipe 1. A spring 401 is fixedly installed on the top of each group of pressure relief plates 402, and the top of the spring 401 is fixedly installed on the inner wall of the conveying pipe 1. Two pressure relief grooves are opened at the front and rear ends of the inner wall of the conveying pipe 1, and there are four pressure relief grooves, which are arranged in groups of two. Each group of pressure relief grooves is distributed on one side of each group of pressure relief plates 402.

[0039] The above scheme is adopted as follows: When the pressure inside the conveying pipe 1 is greater than the elastic coefficient of the spring 401, the pressure reducing plate 504 is in a moving state, and the pressure relief plate 402 is moved by the adjusting plate 503. The inner wall of the conveying pipe 1 is provided with a pressure relief groove on one side of the pressure relief plate 402. When the pressure relief plate 402 is no longer covering the side of the pressure relief groove, the steam inside the conveying pipe 1 will be discharged through the pressure relief groove. This further enables the device to better release pressure. After the pressure is released, the device can return to its original position by the elastic force of the spring 401, which further improves the stability of the device. Since the top of the display plate 205 and the spring telescopic rod 204 are in a movable through-state, when the steam inside the sealed shell 201 pushes the display plate 205 to move, the pressure of the steam inside the conveying pipe 1 can be monitored in real time through the scale grooves on both sides of the conveying pipe 1. This further helps the operator to better detect the internal pressure of the device.

[0040] Working principle and usage process of this invention:

[0041] The operator can manually push one side of the adjusting rod 303. Since one side of the adjusting rod 303 is hinged to one side of the linkage rod 301, and the other side of the linkage rod 301 is also hinged to the linkage plate 202 (but the linkage plate 202 is horizontally fixed and can only move vertically), the other side of the linkage rod 301 drives the linkage plate 202 to move upwards. Simultaneously, the linkage plate 202 moves, driving the connecting plate 203 to move as well. This allows for some control over the air pressure inside the sealed housing 201. When the adjusting rod 303 is no longer pushed, the extension force of the two spring telescopic rods 305 causes one side of the rack 304 to engage with one side of the adjusting rod 303. Since the teeth of the adjusting rod 303 and one side of the rack 304 are interlocked, the adjusting rod 303 is in a fixed state at this time. When steam enters the interior of the sealed housing 201, since the interior of the sealed housing 201 is in a closed state, the steam will push the display panel 205. When the steam pressure is greater than the elastic coefficient of the spring extension rod 204, the display panel 205 will simultaneously drive the sealing plate 501 to rise. Since one side of the sealing plate 501 is hinged to the adjusting plate 503, and the other adjusting plate 503 is hinged to the connecting plate 403 and is in a fixed position, the movement of the sealing plate 501 will cause the other side of the two adjusting plates 503 to move upward at the same time, and simultaneously push the connecting component 502 to move. Since one side of the pressure reducing plate 504 is hinged to the inner wall of the conveying pipe 1, the pressure reducing plate 504 will be pushed to rotate by the connecting component 502, thereby allowing the pressure reducing plate 504 to affect the amount of steam transported inside the conveying pipe 1.

[0042] Since the top of the display panel 205 and the spring telescopic rod 204 are in a movable through-hole state, when the steam inside the sealed housing 201 pushes the display panel 205 to move, the pressure of the steam inside the conveying pipe 1 can be monitored in real time through the scale grooves on both sides of the conveying pipe 1. Furthermore, this helps the operator better detect the internal pressure of the device. When the steam inside the sealed housing 201 pushes the display panel 205 to move, it also drives the adjusting plate 503 to move. The display panel 205 and the spring telescopic rod 204 are in a movable through-hole state and connected by a spring in the spring telescopic rod 204. Because the sealed housing 201 and the conveying pipe 1... The internal components of the conveying pipe 1 are interconnected and have the same pressure. When the pressure inside the conveying pipe 1 is greater than the elastic coefficient of the spring 401, the pressure reducing plate 504 moves and pushes the pressure relief plate 402 to move through the adjusting plate 503. A pressure relief groove is opened on one side of the inner wall of the conveying pipe 1 located on the pressure relief plate 402. When the pressure relief plate 402 is no longer covering the side of the pressure relief groove, the steam inside the conveying pipe 1 will be discharged through the pressure relief groove. This further enables the device to better release pressure. After the pressure is released, the device can return to its original position through the elastic force of the spring 401, further improving the stability of the device's operation.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure steam safety valve, comprising a conveying pipeline (1), characterized in that: Two transmission components (2) are fixedly installed on the front and rear sides of the conveying pipe (1), two adjustment components (3) are fixedly installed on the front and rear sides of the conveying pipe (1), two pressure reducing components (5) are movably engaged on the front and rear sides of the inner wall of the conveying pipe (1), and a pressure relief component (4) is fixedly installed on the inner wall of the conveying pipe (1). The transmission assembly (2) includes a sealed housing (201), which is fixedly connected to one side of the conveying pipe (1). A connecting plate (203) is movably engaged inside the sealed housing (201). A linkage plate (202) is fixedly installed at the bottom of the connecting plate (203). Two spring telescopic rods (204) are fixedly installed at the front and rear ends of the inner wall of the sealed housing (201), and a display panel (205) is fixedly installed at the top of the two spring telescopic rods (204). The middle part of the display panel (205) is movably sleeved with the top of the sealing shell (201). The bottom of the sealing shell (201) is provided with an opening groove. The interior of the sealing shell (201) is connected to the interior of the conveying pipe (1) through the opening groove. The connecting plate (203) is movable on one side of the inner wall of the opening groove. The pressure reducing assembly (5) includes a sealing plate (501), which is movably engaged with one side of the inner wall of the conveying pipe (1). An adjusting plate (503) is hinged to the middle of one side of the sealing plate (501), and a connecting assembly (502) is hinged to the top of the adjusting plate (503). A pressure reducing plate (504) is movably installed on one side of the connecting assembly (502). There are two regulating plates (503) respectively distributed at the top and bottom of the connecting assembly (502). The bottom of the pressure reducing plate (504) is hinged to the inner wall of the conveying pipe (1). The other side of the sealing plate (501) is fixedly installed to one side of the display plate (205).

2. The high-pressure steam safety valve according to claim 1, characterized in that: The pressure relief assembly (4) includes two connecting plates (403) which are movably installed on the front and rear sides of the inner wall of the conveying pipe (1), respectively. Two pressure relief plates (402) are fixedly installed on the top of the two connecting plates (403), and there are four pressure relief plates (402) in total, with each pair forming a group. Each group of pressure relief plates (402) is distributed at the front and rear ends of the top of the two connecting plates (403). Each group of pressure relief plates (402) is movably installed on the inner wall of the conveying pipe (1). A spring (401) is fixedly installed on the top of each group of pressure relief plates (402), and the top of the spring (401) is fixedly installed on the inner wall of the conveying pipe (1).

3. The high-pressure steam safety valve according to claim 2, characterized in that: Two pressure relief grooves are respectively opened at the front and rear ends of the inner wall of the conveying pipe (1). There are four pressure relief grooves, and each pair is a group. Each group of pressure relief grooves is distributed on one side of each group of pressure relief plates (402).

4. The high-pressure steam safety valve according to claim 3, characterized in that: The conveying pipe (1) has several graduated grooves equidistantly opened on one side. The graduated grooves are located on the front and rear sides of the display panel (205). The top of the adjustment plate (503) is hinged to the connecting plate (403).

5. The high-pressure steam safety valve according to claim 1, characterized in that: The adjustment assembly (3) includes a second spring telescopic rod (302), which is fixedly installed with the conveying pipe (1). An adjustment rod (303) is movably installed on the outer surface of the second spring telescopic rod (302). A linkage rod (301) is hinged to the middle of the adjustment rod (303). Two racks (304) are hinged to the front and rear sides of one side of the conveying pipe (1). Two third spring telescopic rods (305) are fixedly installed on the front and rear sides of one side of the conveying pipe (1).

6. The high-pressure steam safety valve according to claim 5, characterized in that: One side of each of the two racks (304) is serrated, and both the front and rear sides of the adjusting rod (303) are serrated. One side of each of the two racks (304) meshes with the front and rear sides of the adjusting rod (303), and the other side of each of the two spring telescopic rods (305) is fixedly installed with one side of the racks (304).

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