Safety valve and pipeline connecting device with high stability

Abstract

The invention provides a safety valve and pipeline connecting device with high stability. The safety valve and pipeline connecting device comprises a valve seat, a valve seat gasket is arranged on the valve seat, a valve body is arranged above the valve seat, an adjusting component is arranged in the valve body, and a valve element component is arranged in the valve body; the valve element component is provided with a valve clack, clamping springs are arranged on the two sides of the valve clack, a recoil disc is arranged above the valve clack, a guide component is arranged on the recoil disc, when the pressure in a pipeline exceeds a set value, the safety valve can be opened in time, fluid is discharged to reduce the pressure, and the valve element component can ensure the stability of the safety valve in the working process. The opening pressure of the safety valve can be conveniently adjusted through the adjusting component so as to meet different working requirements and pipeline pressure requirements. The valve body and the valve cover are connected through a double-end stud, the valve body pipeline connecting part comprises a valve body pipeline connecting upper portion and a valve body pipeline connecting lower portion which are connected with a pipeline through a flange plate and a connecting plate respectively, and it is guaranteed that the safety valve and the pipeline are connected firmly and reliably and are not prone to loosening.

Description

Technical Field

[0001] The invention relates to the field of safety valves, and in particular to a highly stable safety valve and pipeline connecting device. Background Art

[0002] In industrial production and various pipeline systems, safety valves are important components to ensure the safe operation of the system. A safety valve and pipeline connection device proposed in the Chinese invention patent (application number: CN202210303161.2) includes a safety valve body and a steam pipeline, wherein the safety valve body is provided with a steam inlet, the steam inlet is provided with a first connecting flange, the steam pipeline is provided with a discharge port, the discharge port is provided with a second connecting flange matching the first connecting flange, and the first connecting flange and the second connecting flange are provided with a first mounting hole and a second mounting hole respectively. The present invention performs multi-point reinforced connection on the basic flange connection structure, which greatly improves the connection strength between the safety valve and the pipeline, is not easy to cause the nut to loosen, and has good structural stability and reliable connection. The middle part of the seal is compressed by high pressure inside the pipeline, which causes the upper and lower parts of the seal to expand, thereby making the upper and lower parts of the seal and the corresponding connecting flanges more tightly combined, and the sealing effect is better.

[0003] However, there are some problems with the existing safety valve and pipeline connection device in practical application. First of all, the traditional safety valve and pipeline connection device is not satisfactory in terms of stability. Due to the limitations of its structural design, the valve core is prone to instability during operation, resulting in malfunction of the safety valve or failure to respond to pressure changes in time, thereby affecting the safety performance of the system.

[0004] In terms of pressure regulation, the regulation function of existing devices is not flexible and accurate enough. It is difficult to accurately set the opening pressure of the safety valve according to actual needs, which results in the safety valve being unable to open at the appropriate pressure value when the pipeline pressure is abnormal, and the pipeline system cannot be effectively protected.

[0005] In addition, the sealing performance of existing devices needs to be improved. The imperfection of sealing components can easily lead to fluid leakage, which not only wastes resources, but also pollutes the environment and increases the risk of system operation. In terms of the firmness and reliability of the connection, the traditional connection method has the hidden danger of loosening, which affects the stability of the connection between the safety valve and the pipeline, and thus endangers the safe operation of the entire system.

[0006] The safety valve in the prior art may be affected by vibration and impact during operation, resulting in poor stability and prone to failure, which affects the normal operation of the safety valve.

[0007] The sealing components of traditional safety valves have design defects or material problems, resulting in less than ideal sealing performance, prone to medium leakage, and posing a threat to the safe operation of the pipeline system.

[0008] The existing safety valve lacks effective buffering and vibration reduction measures during the movement of the valve stem, which causes greater vibration and impact during the movement of the valve stem, which not only affects the service life of the safety valve, but also causes the performance of the safety valve to deteriorate. Therefore, we have made improvements to this and proposed a highly stable safety valve and pipeline connection device. Summary of the invention

[0009] The purpose of the present invention is to address the problems raised by the existing background technology. In order to achieve the above-mentioned purpose of the invention, the present invention provides the following technical solutions: a highly stable safety valve and pipeline connection device, comprising a valve seat, a valve seat gasket is arranged on the valve seat, a valve body is arranged above the valve seat, an adjusting component is arranged inside the valve body, and a valve core component is arranged inside the valve body; the valve core component is provided with a valve disc, a magnetic sealing ring is arranged on the outer surface of the upper end of the valve disc, a locking piece is connected above the magnetic sealing ring, retaining springs are arranged on both sides of the valve disc, a recoil disc is arranged above the valve disc, and a valve spring is arranged on the recoil disc. A cushion block is arranged on the recoil disk, and a guide component is arranged on the recoil disk, and the guide component is connected to the valve stem part, an adjusting screw sleeve is arranged above the valve stem part, an oscillation buffer sleeve is arranged on the outer surface of the upper end part of the valve stem of the valve stem part, a serrated micro spring is arranged inside the oscillation buffer sleeve, a soft magnetic ring is arranged on the outer surface of the lower end of the valve stem, a magnetic yoke is arranged below the end of the valve stem, a magnetic attraction ring is arranged above the soft magnetic ring, a magnetic suspension coupling ring is arranged above the magnetic yoke, the adjusting screw sleeve is connected to the valve cap, and a pipeline connecting component is arranged on the side of the valve body.

[0010] As a preferred technical solution of the present invention, the adjusting component includes an adjusting ring, an adjusting ring set screw, and a hexagonal nut; the adjusting ring is provided with an adjusting ring set screw, and the end of the adjusting ring set screw is provided with a hexagonal nut.

[0011] As a preferred technical solution of the present invention, a lead seal is provided on the outer surface of the valve body, and steel wires are provided on both sides of the lead seal.

[0012] As a preferred technical solution of the present invention, the guide component is provided with a guide sleeve, the guide sleeve is connected to the valve cover, and a valve cover gasket is provided at the connection between the guide sleeve and the valve cover.

[0013] As a preferred technical solution of the present invention, the valve stem portion is provided with a valve stem, the outer surface of the valve stem is sleeved with a spring, and the upper end of the spring is provided with a spring seat.

[0014] As a preferred technical solution of the present invention, a screw sleeve gasket is provided at the connection between the adjusting screw sleeve and the valve cap, and the upper end of the adjusting screw sleeve is matched with a small round nut.

[0015] As a preferred technical solution of the present invention, the valve body and the valve cover are connected by studs and fixed by hexagonal nuts. A hexagonal screw plug is provided on the side of the valve body, and a screw plug gasket is provided at the connection between the hexagonal screw plug and the valve body. A nameplate is provided on the valve cover, and rivets are provided at the four corners of the nameplate.

[0016] As a preferred technical solution of the present invention, the valve body-pipe connection component includes a valve body-pipe connection upper part and a valve body-pipe connection lower part, the valve body-pipe connection upper part is arranged on the side of the valve body, the valve body-pipe connection upper part is provided with a flange, and the flange is provided with a pipeline connection threaded hole; the valve body-pipe connection lower part is arranged below the valve body, the valve body-pipe connection lower part is provided with a connecting plate, and the connecting plate is provided with a plate hole.

[0017] A method for connecting a safety valve with a pipeline connecting device with high stability, comprising the following steps: Step 1. Installation preparation: Check that the components of the safety valve and the pipeline connection device are not damaged or; confirm that the adjusting components, valve core components, lead seals and steel wires of the valve body, guide sleeves and valve cover gaskets of the guide components, valve stems and springs of the valve stem, adjusting screw sleeves and screw sleeve gaskets of the valve bonnet, studs and hexagonal nuts of the valve body and valve cover, hexagonal screw plugs and screw plug gaskets on the side of the valve body are complete and normal; Step 2. Connect the valve body to the pipeline: Connect the connection plate at the bottom of the valve body pipeline to the pipeline below; use appropriate bolts to fasten the connection plate to the pipeline through the holes on the connection plate; Connect the flange on the upper part of the valve body pipe connection to the side pipe; use bolts to pass through the pipe connection threaded holes on the flange to tightly connect the flange and the pipe; Step 3. Install the valve core components: Install the retaining rings on both sides of the valve disc, and then install the valve disc inside the valve body; install the recoil disc and the gasket on the top of the valve disc in sequence, and ensure that they are firmly installed; connect the guide sleeve of the guide component to the valve cover, install the valve cover gasket at the connection, and then connect the guide component to the valve stem; put the spring on the outer surface of the valve stem of the valve stem, and install the spring seat on the upper end of the spring; Step 4. Install the adjusting component: Install the adjusting ring inside the valve body and fix it with the adjusting ring set screw. Install a hexagonal nut on the end of the adjusting ring set screw. Step 5. Overall assembly: Connect the valve body with the valve core and regulating components installed to the valve cover through studs and fix them with hexagonal nuts; install the screw sleeve gasket at the connection between the adjusting screw sleeve and the valve bonnet, and then connect the adjusting screw sleeve to the valve bonnet; install the upper end of the adjusting screw sleeve in conjunction with the small round nut; Step 6. Debugging: Check whether all connection parts are tight and not loose; debug the safety valve and adjust the performance of the safety valve by adjusting components according to actual needs; Step 7. Inspection and maintenance: Install a label on the valve cover and fix it with rivets at the four corners; record the installation and commissioning process of the safety valve, including installation time, commissioning parameters, and operator information; during the use of the safety valve, regularly inspect and maintain it to ensure its stable performance and safe and reliable performance; check whether the lead seal and steel wire are intact, and replace them in time if damaged; regularly check the working status of each component, and repair or replace it in time if any problems are found.

[0018] As a preferred technical solution of the present invention, step 3. The safety valve flow formula of the valve core component is: 2π * * in: is the flow through the safety valve; is the flow coefficient; is the cross-sectional area of ​​the valve seat; is the pressure drop, i.e. the pressure difference before and after the valve; is the density of the fluid; Step 3. The pressure formula of the valve core component is: ; Where: P is the set pressure of the safety valve, usually in MPa; is the coefficient of the nominal valve port diameter, The coefficient of the outlet diameter is affected by the valve type and manufacturing standards, and is generally taken as 0.9~0.95; C is the calibration coefficient, which is related to the structure and calibration method of the safety valve, and is taken as 0.9~1.0; S is the size area of ​​the safety valve seat, in m²; G is the acceleration of gravity, and is taken as 9.8 m / s².

[0019] Compared with the prior art, the present invention has the following beneficial effects: In the scheme of the present invention: When the pressure in the pipeline exceeds the set value, the safety valve can be opened in time to discharge fluid to reduce the pressure, effectively preventing the pipeline from rupturing or other safety accidents due to excessive pressure, thereby ensuring the safety of personnel and equipment. The valve core components of the present invention include valve discs, retaining springs, recoil discs, and springs, which can ensure the stability of the safety valve during operation and reduce the occurrence of malfunctions.

[0020] The invention can conveniently adjust the opening pressure of the safety valve by adjusting the adjusting ring, adjusting ring set screw and hexagonal nut in the adjusting component to adapt to different working requirements and pipeline pressure requirements. The invention effectively prevents fluid leakage and improves the sealing performance and reliability of the system by setting the valve seat gasket, valve cover gasket, screw sleeve gasket and screw plug gasket sealing components.

[0021] The valve body and the valve cover of the present invention are connected by studs and fixed by hexagonal nuts. The valve body-pipe connection component includes an upper part and a lower part of the valve body-pipe connection, which are respectively connected to the pipeline by a flange and a connecting plate, thereby ensuring that the connection between the safety valve and the pipeline is firm and reliable and not easy to loosen. The hexagonal screw plug arranged on the side of the valve body of the present invention facilitates the maintenance and inspection of the valve body. At the same time, the arrangement of the lead seal and the steel wire can prevent unauthorized operation and ensure the safety and integrity of the safety valve. The guide sleeve in the guide component of the present invention is connected to the valve cover, which ensures that the movement direction of the valve stem is accurate, so that the safety valve can be opened and closed normally, and the reliability of the work is improved.

[0022] The setting of magnetic sealing ring, locking piece, retaining spring, guide component, oscillation buffer sleeve, sawtooth micro spring and magnetic components can effectively improve the stability of the safety valve during operation, reduce the impact of vibration and impact on the performance of the safety valve, and ensure that the safety valve can work reliably. The magnetic sealing ring and other sealing components on the valve disc can effectively improve the sealing performance of the safety valve, prevent medium leakage, and ensure the safe operation of the pipeline system. The setting of oscillation buffer sleeve and sawtooth micro spring can effectively absorb the energy during the movement of the valve stem, reduce vibration and impact, and extend the service life of the safety valve.

[0023] The setting of the adjusting component and the adjusting screw sleeve enables the opening pressure of the safety valve to be accurately adjusted according to actual needs to meet the requirements of different pipeline systems. The pipeline connection component on the side of the valve body ensures that the connection between the safety valve and the pipeline is firm and reliable to prevent loosening or leakage during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic cross-sectional view of the structure provided by the present invention; Figure 2 A schematic diagram of the valve cap structure provided by the present invention; Figure 3A schematic diagram of the guide sleeve structure provided by the present invention; Figure 4 A schematic diagram of a partial three-dimensional structure provided by the present invention; Figure 5 A schematic diagram of the structure of the recoil disc provided by the present invention; Figure 6 A schematic diagram of the structure of the adjusting screw sleeve provided by the present invention; Figure 7 This is a schematic diagram of the magnetic levitation coupling ring structure provided by the present invention.

[0025] Indicated in the figure: 1. Valve seat; 2. Valve seat gasket; 3. Valve body; 4. Hexagonal screw plug; 5. Screw plug gasket; 6. Adjustment ring; 7. Adjustment ring set screw; 8. Screw hexagonal nut; 9. Valve disc; 10. Circlip; 11. Recoil disc; 12. Spacer; 13. Lead seal; 14. Steel wire; 15. Guide sleeve; 16. Valve cover gasket; 17. Valve cover; 18. Valve stem; 19. Spring; 20. Spring seat; 21. Adjustment screw sleeve; 22. Screw 1. Sleeve gasket; 23. Small round nut; 24. Valve bonnet; 25. Label; 26. Rivet; 27. Stud hexagonal nut; 28. Double-headed stud; 29. ​​Flange; 30. Pipe connection threaded hole; 31. Connecting plate; 32. Plate hole; 33. Soft magnetic ring; 34. Magnetic yoke; 35. Magnetic attraction ring; 36. Magnetic sealing ring; 37. Magnetic suspension coupling ring; 38. Locking piece; 39. Oscillation buffer sleeve; 40. Serrated micro spring. DETAILED DESCRIPTION

[0026] To make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiment is a specific implementation of the present invention and is not limited to all embodiments.

[0027] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] Example 1: Please refer to Figure 1-Figure 7A highly stable safety valve and pipeline connection device comprises a valve seat 1, a valve seat gasket 2 is arranged on the valve seat 1, a valve body 3 is arranged above the valve seat 1, an adjusting component is arranged inside the valve body 3, and a valve core component is arranged inside the valve body 3; a valve disc 9 is arranged on the valve core component, a magnetic sealing ring 36 is arranged on the outer surface of the upper end of the valve disc 9, a locking piece 38 is connected above the magnetic sealing ring 36, retaining springs 10 are arranged on both sides of the valve disc 9, a recoil disc 11 is arranged above the valve disc 9, a cushion block 12 is arranged on the recoil disc 11, and a A guide component is connected to the valve stem portion, an adjusting screw sleeve 21 is arranged above the valve stem portion, an oscillation buffer sleeve 39 is arranged on the outer surface of the upper end portion of the valve stem 18 of the valve stem portion, a serrated micro spring 40 is arranged inside the oscillation buffer sleeve 39, a soft magnetic ring 33 is arranged on the outer surface of the lower end of the valve stem 18, a magnetic yoke 34 is arranged below the end of the valve stem 18, a magnetic attraction ring 35 is arranged above the soft magnetic ring, a magnetic suspension coupling ring 37 is arranged above the magnetic yoke 34, the adjusting screw sleeve 21 is connected to the valve cap 24, and a pipeline connecting component is arranged on the side of the valve body 3.

[0030] When the pressure in the pipeline exceeds the set value of the safety valve, the medium pressure acts on the valve disc 9, pushing the valve disc 9 to move upward. The magnetic sealing ring 36, the locking piece 38 and the retaining spring 10 on the valve disc 9 help to ensure the stability and sealing of the valve disc 9 during the movement.

[0031] As the valve disc 9 rises, the recoil disc 11 is also subjected to the force of the medium. The pad 12 and the guide component on the recoil disc 11 can ensure the movement direction and stability of the recoil disc 11. At the same time, the guide component is connected to the valve stem to transmit the movement of the recoil disc 11 to the valve stem.

[0032] The valve stem 18 moves upward under the action of the medium pressure, and the oscillation buffer sleeve 39 on the outer surface of its upper end and the internal serrated micro spring 40 can play a role in buffering and vibration reduction, reducing the oscillation of the valve stem 18 during movement and improving the stability of the safety valve.

[0033] The magnetic components such as the soft magnetic ring 33, the magnetic yoke 34, the magnetic attraction ring 35 and the magnetic suspension coupling ring 37 on the outer surface of the lower end of the valve stem 18 further enhance the movement stability and sealing performance of the valve stem 18 through magnetic interaction.

[0034] When the pressure in the pipeline drops below the set value of the safety valve, the valve flap 9 returns to its initial position under the action of the spring force or other reset device, closing the safety valve to ensure the normal operation of the pipeline.

[0035] By arranging the magnetic sealing ring 36, the locking piece 38, the retaining spring, the guide component, the oscillation buffer sleeve 39, the serrated micro spring 40 and the magnetic component, the stability of the safety valve during operation is effectively improved, the influence of vibration and impact on the performance of the safety valve is reduced, and the safety valve is ensured to work reliably.

[0036] The design of the magnetic sealing ring 36 and other sealing components on the valve disc can effectively improve the sealing performance of the safety valve, prevent medium leakage, and ensure the safe operation of the pipeline system.

[0037] The arrangement of the oscillation buffer sleeve 39 and the sawtooth micro spring 40 can effectively absorb the energy during the movement of the valve stem, reduce oscillation and impact, and extend the service life of the safety valve.

[0038] The setting of the adjusting component and the adjusting screw sleeve enables the opening pressure of the safety valve to be accurately adjusted according to actual needs to meet the requirements of different pipeline systems.

[0039] The pipe connection parts on the side of the valve body ensure that the connection between the safety valve and the pipeline is firm and reliable, preventing loosening or leakage during operation.

[0040] The adjusting component includes an adjusting ring 6, an adjusting ring set screw 7, and a screw hexagonal nut 8. The adjusting ring 6 is provided with an adjusting ring set screw 7, and the end of the adjusting ring set screw 7 is provided with a screw hexagonal nut 8. A lead seal 13 is provided on the outer surface of the valve body 3, and steel wires 14 are provided on both sides of the lead seal 13.

[0041] The guide component is provided with a guide sleeve 15 , the guide sleeve 15 is connected to the valve cover 17 , and a valve cover gasket 16 is provided at the connection between the guide sleeve 15 and the valve cover 17 .

[0042] The valve stem portion is provided with a valve stem 18, the outer surface of the valve stem 18 is sleeved with a spring 19, and the upper end of the spring 19 is provided with a spring seat 20. A screw sleeve gasket 22 is provided at the connection between the adjusting screw sleeve 21 and the valve cap 24, and the upper end of the adjusting screw sleeve 21 cooperates with a small round nut 23.

[0043] The valve body 3 is connected to the valve cover 17 by a double-headed stud 28 and fixed by a stud hexagonal nut 27. A hexagonal screw plug 4 is provided on the side of the valve body 3, and a screw plug gasket 5 is provided at the connection between the hexagonal screw plug 4 and the valve body 3. A nameplate 25 is provided on the valve cover 17, and rivets 26 are provided at the four corners of the nameplate 25.

[0044] The pipeline connection component of the valve body 3 includes an upper part of the pipeline connection of the valve body 3 and a lower part of the pipeline connection of the valve body 3. The upper part of the pipeline connection of the valve body 3 is arranged on the side of the valve body 3, and a flange 29 is arranged on the upper part of the pipeline connection of the valve body 3, and a pipeline connection threaded hole 30 is arranged on the flange 29; the lower part of the pipeline connection of the valve body 3 is arranged below the valve body 3, and a connecting plate 31 is arranged on the lower part of the pipeline connection of the valve body 3, and a plate hole 32 is arranged on the connecting plate 31.

[0045] Working principle of the safety valve and pipeline connection device: When the pressure in the pipeline is within the normal range, the valve core component is in a closed state. The valve disc 9 is fixed by the retaining springs 10 on both sides, and the upper recoil disc 11 provides certain support through the cushion block 12. The guide sleeve 15 in the guide component is connected to the valve cover 17 to ensure the accurate movement direction of the valve stem. The outer surface of the valve stem 18 of the valve stem is covered with a spring 19, and the upper end of the spring 19 has a spring seat 20, which plays a certain buffering and resetting role.

[0046] When the pressure in the pipeline exceeds the set value, the fluid pressure acts on the valve disc 9, overcomes the force of the spring 19, and pushes the valve disc 9 upward. The movement of the valve disc 9 drives the recoil disc 11 upward, and guides the valve stem to move upward through the guide component. At this time, the safety valve opens, and the fluid is discharged through the inside of the valve body 3 to reduce the pressure in the pipeline.

[0047] The adjusting ring 6 in the adjusting component can be adjusted by means of the adjusting ring set screw 7 and the screw hexagonal nut 8, thereby changing the opening pressure of the safety valve.

[0048] The lead seal 13 and the steel wire 14 provided on the outer surface of the valve body 3 are used to ensure the safety and integrity of the valve body 3 and prevent unauthorized operation.

[0049] The valve stem 18 of the valve stem is connected to the valve cap 24 through the adjusting screw sleeve 21. The screw sleeve gasket 22 provided at the connection between the adjusting screw sleeve 21 and the valve cap 24 plays a sealing and buffering role. The upper end of the adjusting screw sleeve 21 cooperates with the small round nut 23 to fix the position of the adjusting screw sleeve 21.

[0050] The valve body 3 and the valve cover 17 are connected by studs 28 and fixed by stud hexagonal nuts 27 to ensure that the valve body 3 and the valve cover 17 are tightly connected. The hexagonal screw plug 4 on the side of the valve body 3 is used for maintenance and repair of the valve body 3, and the screw plug gasket 5 ensures the sealing of the connection. The label 25 on the valve cover 17 is used to identify the relevant information of the safety valve, and the rivets 26 at the four corners are used to fix the label 25.

[0051] In the pipe connection part of the valve body 3, the flange 29 at the upper part of the pipe connection of the valve body 3 is connected to the pipe through the pipe connection threaded hole 30 to achieve the side connection. The connection plate 31 at the lower part of the pipe connection of the valve body 3 is connected to the pipe through the plate hole 32 to achieve the connection below, so that the safety valve is tightly connected to the pipe system, ensuring that the safety valve can work normally and guaranteeing the safe operation of the pipe system.

[0052] The working process of the stable and high safety valve and pipeline connection device is as follows: Installation and connection: Install the valve seat gasket 2 on the valve seat 1. Install the valve body 3 above the valve seat 1. Connect the safety valve to the pipeline through the valve body 3 pipeline connection component. Specifically, the flange 29 at the upper part of the valve body 3 pipeline connection is connected to the side of the pipeline through the pipeline connection threaded hole 30, and the connection plate 31 at the lower part of the valve body 3 pipeline connection is connected to the lower part of the pipeline through the plate hole 32.

[0053] Initial state: Under normal circumstances, the pressure in the pipeline is within the set safety range. The valve core component is in a closed state. The valve disc 9 is fixed by the retaining springs 10 on both sides, and the upper recoil disc 11 is supported by the cushion block 12. The spring 19 on the outer surface of the valve stem 18 of the valve stem is in a compressed state, and the upper end of the spring 19 is supported by the spring seat 20, providing a downward closing force for the valve disc 9.

[0054] When the pressure rises: When the pressure in the pipeline exceeds the set value, the fluid pressure acts on the valve disc 9, overcomes the force of the spring 19, and pushes the valve disc 9 upward. The movement of the valve disc 9 drives the recoil disc 11 to move upward, and the guide component on the recoil disc 11 guides the valve stem to move upward.

[0055] Safety valve opens: As the valve stem moves upward, the safety valve opens, and the fluid is discharged through the inside of the valve body 3, thereby reducing the pressure in the pipeline.

[0056] Adjusting the pressure setting value: The opening pressure of the safety valve can be changed by adjusting the components. The adjusting ring set screw 7 on the adjusting ring 6 can be adjusted and fixed by the screw hexagonal nut 8 after adjustment.

[0057] Sealing and fixing of components: The lead seal 13 and steel wire 14 are set on the outer surface of the valve body 3 to ensure the safety and integrity of the valve body 3 and prevent unauthorized operation. The guide sleeve 15 is connected to the valve cover 17, and the valve cover gasket 16 at the connection ensures sealing. The screw sleeve gasket 22 set at the connection between the adjusting screw sleeve 21 and the valve cap 24 plays a sealing and buffering role. The valve body 3 is connected to the valve cover 17 through the stud 28 and fixed by the stud hexagonal nut 27 to ensure a tight connection.

[0058] A screw plug gasket 5 is provided at the connection between the hexagonal screw plug 4 on the side of the valve body 3 and the valve body 3 to ensure sealing.

[0059] The label 25 on the valve cover 17 is fixed by rivets 26 at the four corners and is used to mark the relevant information of the safety valve.

[0060] Pressure returns to normal: When the pressure in the pipeline drops below the set value, the force of the spring 19 causes the valve disc 9 to move downward, the safety valve closes, and returns to its initial state Embodiment 2: A method for connecting a safety valve with a pipeline connection device with high stability, comprising the following steps: Step 1. Installation preparation: Check that the components of the safety valve and the pipeline connection device are not damaged or; confirm that the adjusting components, valve core components, lead seal 13 and steel wire 14 of the valve body 3, guide sleeve 15 and valve cover gasket 16 of the guide component, valve stem 18 and spring 19 of the valve stem, adjusting screw sleeve 21 and screw sleeve gasket 22 of the valve bonnet 24, stud 28 and stud hexagonal nut 27 of the valve body 3 and valve cover 17, hexagonal screw plug 4 and screw plug gasket 5 on the side of the valve body 3 are complete and normal; Step 2. Connect the valve body 3 to the pipeline: Connect the connection plate 31 at the lower part of the valve body 3 pipeline connection to the lower pipeline; Use appropriate bolts to fasten the connection plate 31 to the pipeline through the plate hole 32 on the connection plate 31; Connect the flange 29 on the upper part of the valve body 3 pipeline connection to the side pipeline; use bolts to pass through the pipeline connection threaded holes 30 on the flange 29 to tightly connect the flange 29 to the pipeline; Step 3. Install the valve core components: Install the retaining springs 10 on both sides of the valve disc 9, and then install the valve disc 9 inside the valve body 3; install the recoil disc 11 and the cushion block 12 in sequence above the valve disc 9, and ensure that they are firmly installed; connect the guide sleeve 15 of the guide component with the valve cover 17, install the valve cover gasket 16 at the connection, and then connect the guide component with the valve stem; put the spring 19 on the outer surface of the valve stem 18 of the valve stem, and install the spring seat 20 on the upper end of the spring 19; Step 4. Install the adjusting component: install the adjusting ring 6 inside the valve body 3 and fix it with the adjusting ring set screw 7. The end of the adjusting ring set screw 7 is installed with a screw hexagonal nut 8; Step 5. Overall assembly: connect the valve body 3 with the valve core component and the regulating component installed to the valve cover 17 through the stud 28, and fix it with the stud hexagonal nut 27; install the screw sleeve gasket 22 at the connection between the adjusting screw sleeve 21 and the valve cap 24, and then connect the adjusting screw sleeve 21 to the valve cap 24; install the upper end of the adjusting screw sleeve 21 in conjunction with the small round nut 23; Step 6. Debugging: Check whether all connection parts are tight and not loose; debug the safety valve and adjust the performance of the safety valve by adjusting components according to actual needs; Step 7. Inspection and maintenance: Install a label 25 on the valve cover 17 and fix the four corners of the label 25 with rivets 26; record the installation and commissioning process of the safety valve, including installation time, commissioning parameters, and operator information; during the use of the safety valve, regularly inspect and maintain it to ensure its stable performance and safe and reliable performance; check whether the lead seal 13 and steel wire 14 are intact, and replace them in time if damaged; regularly check the working status of each component, and repair or replace them in time if any problems are found.

[0061] Step 3. The safety valve flow formula for the valve core component is: 2π * * in: is the flow through the safety valve; is the flow coefficient; is the cross-sectional area of ​​the valve seat (1); is the pressure drop, i.e. the pressure difference before and after the valve; is the density of the fluid; Step 3. The pressure formula of the valve core component is: ; Where: P is the set pressure of the safety valve, usually in MPa; is the coefficient of the nominal valve port diameter, The coefficient of the outlet diameter is affected by the valve type and manufacturing standards, and is generally taken as 0.9~0.95; C is the calibration coefficient, which is related to the structure and calibration method of the safety valve, and is taken as 0.9~1.0; S is the size area of ​​the safety valve seat, in m²; G is the acceleration of gravity, and is taken as 9.8 m / s².

[0062] When the pressure in the pipeline exceeds the set value of the safety valve, the medium pressure acts on the valve disc 9, pushing the valve disc 9 to move upward. The magnetic sealing ring 36, the locking piece 38 and the retaining spring 10 on the valve disc 9 help to ensure the stability and sealing of the valve disc 9 during the movement.

[0063] As the valve disc 9 rises, the recoil disc 11 is also subjected to the force of the medium. The pad 12 and the guide component on the recoil disc 11 can ensure the movement direction and stability of the recoil disc 11. At the same time, the guide component is connected to the valve stem to transmit the movement of the recoil disc 11 to the valve stem.

[0064] The valve stem 18 moves upward under the action of the medium pressure, and the oscillation buffer sleeve 39 on the outer surface of its upper end and the internal serrated micro spring 40 can play a role in buffering and vibration reduction, reducing the oscillation of the valve stem 18 during movement and improving the stability of the safety valve.

[0065] The magnetic components such as the soft magnetic ring 33, the magnetic yoke 34, the magnetic attraction ring 35 and the magnetic suspension coupling ring 37 on the outer surface of the lower end of the valve stem 18 further enhance the movement stability and sealing performance of the valve stem 18 through magnetic interaction.

[0066] When the pressure in the pipeline drops below the set value of the safety valve, the valve disc 9 returns to its initial position under the action of the spring force or other reset device, closing the safety valve to ensure the normal operation of the pipeline Embodiment 3: A highly stable safety valve and pipeline connection device, the valve seat 1 is made of high-strength alloy steel, and the valve seat 1 with a diameter of 80 mm is manufactured by mechanical processing. A high-temperature resistant asbestos rubber valve seat gasket 2 with a thickness of 3 mm is placed on the valve seat 1. The valve body 3 is made of stainless steel material, and the valve body 3 with an inner diameter of 60 mm is manufactured by a casting process. The valve core component selects a hard alloy valve disc 9 with a diameter of 50 mm, and a spring 19 steel retaining spring 10 with an elastic coefficient of 50 N / m is installed on both sides thereof.

[0067] A stainless steel recoil disc 11 with a diameter of 40 mm is installed above the valve disc 9, and a rubber pad 12 with a thickness of 2 mm is placed on the recoil disc 11. A guide sleeve 15 with an inner diameter of 15 mm is made of copper alloy for the guide component installation, and is connected to the valve cover 17. A rubber valve cover gasket 16 with a thickness of 2 mm is installed at the connection between the guide sleeve 15 and the valve cover 17.

[0068] The valve stem assembly uses a stainless steel valve stem 18 with a diameter of 12mm, and a spring 19 with an elastic coefficient of 60N / m and an outer diameter of 25mm is sheathed on its outer surface, and a cast iron spring seat 20 with a diameter of 30mm is installed on the upper end of the spring 19. Adjustment component installation: an adjustment ring 6 with an outer diameter of 35mm is made of stainless steel, and a stainless steel adjustment ring set screw 7 with a diameter of 6mm and a length of 15mm is installed on the adjustment ring 6, and a stainless steel screw hexagonal nut 8 with a width of 10mm is installed at the end of the adjustment ring set screw 7.

[0069] The valve body 3 is connected to the valve cover 17 by a stainless steel stud 28 with a diameter of 8 mm and a length of 40 mm, and is fixed by a stainless steel stud hexagonal nut 27 with a width of 10 mm across the flats.

[0070] A stainless steel hexagonal screw plug 4 with a width of 8 mm across the side is installed on the side of the valve body 3, and a rubber screw plug gasket 5 with a thickness of 1.5 mm is installed at the connection between the hexagonal screw plug 4 and the valve body 3. An aluminum alloy plate 25 with a length of 40 mm and a width of 20 mm is installed on the valve cover 17, and aluminum alloy rivets 26 with a diameter of 2 mm and a length of 8 mm are used to fix the four corners of the plate 25.

[0071] The upper part of the valve body 3 pipeline connection is installed on the side of the valve body 3. The component is provided with a carbon steel flange 29 with an outer diameter of 120 mm and an inner diameter of 70 mm. The flange 29 is provided with a pipeline connection threaded hole 30 with a diameter of 14 mm and a pitch of 1.5 mm. The lower part of the valve body 3 pipeline connection is installed below the valve body 3. The component is provided with a carbon steel connecting plate 31 with a diameter of 80 mm. The connecting plate 31 is provided with a plate hole 32 with a diameter of 10 mm.

[0072] Embodiment 4: A highly stable safety valve and pipeline connection device, the valve seat 1 is made of cast steel, and the valve seat 1 with a diameter of 100 mm is manufactured by mechanical processing. Valve seat gasket 2 installation: a graphite composite valve seat gasket 2 with a thickness of 4 mm is placed on the valve seat 1. The valve body 3 is made of cast steel material, and the valve body 3 with an inner diameter of 80 mm is manufactured by a casting process.

[0073] The valve core component assembly selects a ceramic valve disc 9 with a diameter of 60mm, and installs spring 19 steel circlips 10 with an elastic coefficient of 60N / m on both sides. A stainless steel recoil disc 11 with a diameter of 50mm is installed above the valve disc 9, and a rubber pad 12 with a thickness of 2.5mm is placed on the recoil disc 11.

[0074] Installation of guide components: A guide sleeve 15 with an inner diameter of 18 mm is made of copper and connected to the valve cover 17. An asbestos rubber valve cover gasket 16 with a thickness of 3 mm is installed at the connection between the guide sleeve 15 and the valve cover 17.

[0075] The valve stem assembly uses a stainless steel valve stem 18 with a diameter of 14 mm, and a spring 19 with an elastic coefficient of 70 N / m and an outer diameter of 30 mm is sleeved on its outer surface, and a cast steel spring seat 20 with a diameter of 35 mm is installed on the upper end of the spring 19.

[0076] The adjusting component is installed by making an adjusting ring 6 of stainless steel with an outer diameter of 40 mm, a stainless steel adjusting ring fixing screw 7 with a diameter of 8 mm and a length of 18 mm is installed on the adjusting ring 6, and a stainless steel screw hexagonal nut 8 with a width of 12 mm is installed at the end of the adjusting ring fixing screw 7.

[0077] The valve body 3 is connected to the valve cover 17 by a stainless steel stud 28 with a diameter of 10 mm and a length of 50 mm, and is fixed by a stainless steel stud hexagonal nut 27 with a width of 12 mm across the flats.

[0078] A stainless steel hexagonal screw plug 4 with a width of 10 mm across the side is installed on the side of the valve body 3 , and a rubber screw plug gasket 5 with a thickness of 2 mm is installed at the connection between the hexagonal screw plug 4 and the valve body 3 .

[0079] An aluminum alloy plate 25 with a length of 50 mm and a width of 25 mm is installed on the valve cover 17, and the plate 25 is fixed at the four corners with aluminum alloy rivets 26 with a diameter of 2.5 mm and a length of 10 mm.

[0080] Installation of pipeline connection components: The upper part of the pipeline connection of the valve body 3 is installed on the side of the valve body 3. The component is provided with a carbon steel flange 29 with an outer diameter of 140mm and an inner diameter of 90mm. The flange 29 is provided with a pipeline connection threaded hole 30 with a diameter of 16mm and a pitch of 2mm.

[0081] The lower part of the valve body 3 pipeline connection is installed below the valve body 3. The component is provided with a carbon steel connecting plate 31 with a diameter of 90 mm, and the connecting plate 31 is provided with a plate hole 32 with a diameter of 12 mm.

[0082] Valve body 3 is connected to the pipeline: Torque calculation: When using bolts to tighten the connection, it is necessary to calculate the required torque to ensure the firmness of the connection.

[0083] The torque T is calculated by the following formula: T=K*D*F Where: T is torque (Nm); K is friction coefficient; D is bolt diameter (m); F is preload (N); Installation of valve core components: Calculation of spring 19 compression: Ensure that spring 19 can reach the expected compression amount after installation to maintain appropriate pressure.

[0084] The formula for the compression of spring 19 is as follows: = Where: F is the applied force (N); k is the spring constant (N / m); Step 3. The safety valve flow formula for the valve core component is: 2π * * in: is the flow through the safety valve; is the flow coefficient; is the cross-sectional area of ​​the valve seat (1); is the pressure drop, i.e. the pressure difference before and after the valve; is the density of the fluid; Step 3. The pressure formula of the valve core component is: ; Where: P is the set pressure of the safety valve, usually in MPa; is the coefficient of the nominal valve port diameter, The coefficient of the outlet diameter is affected by the valve type and manufacturing standards, and is generally 0.9~0.95; C is the calibration coefficient, which is related to the structure and calibration method of the safety valve, and is 0.9~1.0; S is the size area of ​​the safety valve seat, in m²; G is the acceleration of gravity, and is 9.8 m / s² During the use of the present invention, during the process of connecting the valve body 3 to the pipeline, the connection plate 31 at the lower part of the valve body 3 pipeline connection is fastened to the lower pipeline with bolts, and the flange plate 29 at the upper part of the valve body 3 pipeline connection is tightly connected to the side pipeline with bolts, so as to achieve a stable connection between the valve body 3 and the pipeline, ensuring that the medium can flow safely in the pipeline.

[0085] After installing the retaining rings 10 on both sides of the valve disc 9, the valve disc 9 is installed inside the valve body 3, and then the recoil disc 11 and the cushion block 12 are installed in sequence to achieve control of the medium. The guide sleeve 15 of the guide component is connected to the valve cover 17, and the seal is ensured by the valve cover gasket 16. At the same time, the guide component is connected to the valve stem to ensure that the movement direction of the valve disc 9 is accurate. The outer surface of the valve stem 18 of the valve stem is covered with a spring 19, and a spring seat 20 is installed on the upper end of the spring 19. The function of the spring 19 is to provide a certain elastic force for the valve disc 9 so that it can remain in a closed state under normal working conditions. When the pressure in the pipeline exceeds the set value, the spring 19 is compressed, the valve disc 9 opens, and pressure relief is achieved.

[0086] When the pressure in the pipeline exceeds the set value of the safety valve, the medium pressure acts on the valve disc 9, pushing the valve disc 9 to move upward. The magnetic sealing ring 36, the locking piece 38 and the retaining spring 10 on the valve disc 9 help to ensure the stability and sealing of the valve disc 9 during the movement.

[0087] As the valve disc 9 rises, the recoil disc 11 is also subjected to the force of the medium. The pad 12 and the guide component on the recoil disc 11 can ensure the movement direction and stability of the recoil disc 11. At the same time, the guide component is connected to the valve stem to transmit the movement of the recoil disc 11 to the valve stem.

[0088] The valve stem 18 moves upward under the action of the medium pressure, and the oscillation buffer sleeve 39 on the outer surface of its upper end and the internal serrated micro spring 40 can play a role in buffering and vibration reduction, reducing the oscillation of the valve stem 18 during movement and improving the stability of the safety valve.

[0089] The magnetic components such as the soft magnetic ring 33, the magnetic yoke 34, the magnetic attraction ring 35 and the magnetic suspension coupling ring 37 on the outer surface of the lower end of the valve stem 18 further enhance the movement stability and sealing performance of the valve stem 18 through magnetic interaction.

[0090] When the pressure in the pipeline drops below the set value of the safety valve, the valve flap 9 returns to its initial position under the action of the spring force or other reset device, closing the safety valve to ensure the normal operation of the pipeline.

[0091] The installation of the adjustment component is to adjust the performance of the safety valve. The adjustment ring 6 is installed inside the valve body 3, fixed by the adjustment ring set screw 7, and the screw hexagonal nut 8 is installed at the end of the screw to ensure the stability of the position of the adjustment ring 6. By adjusting the position of the adjustment ring 6, the opening pressure and discharge capacity of the safety valve can be changed.

[0092] During the overall assembly stage, the valve body 3 with the valve core component and the regulating component installed is connected to the valve cover 17 through the stud 28 and fixed with the stud hexagonal nut 27. The screw sleeve gasket 22 is installed at the connection between the adjusting screw sleeve 21 and the valve bonnet 24, and then the adjusting screw sleeve 21 is connected to the valve bonnet 24, and the upper end of the adjusting screw sleeve 21 is installed in cooperation with the small round nut 23 to further ensure the integrity and sealing of the device.

[0093] The debugging phase mainly checks whether all connection parts are tight and not loose, and adjusts the performance of the safety valve by adjusting components according to actual needs to ensure that the safety valve can accurately respond to pressure changes in the pipeline during operation and achieve safety protection functions.

[0094] The inspection and maintenance phase includes installing a label 25 on the valve cover 17 and fixing it with rivets 26, and recording the installation and commissioning process of the safety valve for subsequent inquiry and maintenance. During the use of the safety valve, it is regularly inspected and maintained to check whether the lead seal 13 and the steel wire 14 are intact. If damaged, replace them in time; regularly check the working status of each component, and repair or replace it in time if any problem is found, so as to ensure the stable performance and safe and reliable performance of the safety valve.

[0095] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A highly stable safety valve and pipeline connection device, comprising a valve seat (1), a valve seat gasket (2) being arranged on the valve seat (1), and a valve body (3) being arranged above the valve seat (1), characterized in that: An adjusting component is arranged inside the valve body (3); a valve core component is arranged inside the valve body (3); a valve disc (9) is arranged on the valve core component; a magnetic sealing ring (36) is arranged on the outer surface of the upper end of the valve disc (9); a locking piece (38) is connected above the magnetic sealing ring (36); retaining springs (10) are arranged on both sides of the valve disc (9); a recoil disc (11) is arranged above the valve disc (9); a cushion block (12) is arranged on the recoil disc (11); a guide component is arranged on the recoil disc (11); the guide component is connected to the valve stem; the upper part of the valve stem An adjusting screw sleeve (21) is provided, an oscillation buffer sleeve (39) is provided on the outer surface of the upper end of the valve stem (18) of the valve stem portion, a serrated micro spring (40) is provided inside the oscillation buffer sleeve (39), a soft magnetic ring (33) is provided on the outer surface of the lower end of the valve stem (18), a magnetic yoke (34) is provided below the end of the valve stem (18), a magnetic attraction ring (35) is provided above the soft magnetic ring, a magnetic suspension coupling ring (37) is provided above the magnetic yoke (34), the adjusting screw sleeve (21) is connected to the valve cap (24), and a pipeline connection component is provided on the side of the valve body (3).

2. A highly stable safety valve and pipeline connecting device according to claim 1, characterized in that: The adjusting component comprises an adjusting ring (6), an adjusting ring set screw (7), and a screw hexagonal nut (8); the adjusting ring set screw (7) is arranged on the adjusting ring (6), and the screw hexagonal nut (8) is arranged at the end of the adjusting ring set screw (7).

3. A highly stable safety valve and pipeline connection device according to claim 1, characterized in that: A lead seal (13) is provided on the outer surface of the valve body (3), and steel wires (14) are provided on both sides of the lead seal (13).

4. A highly stable safety valve and pipeline connection device according to claim 1, characterized in that: The guide component is provided with a guide sleeve (15), the guide sleeve (15) is connected to the valve cover (17), and a valve cover gasket (16) is provided at the connection between the guide sleeve (15) and the valve cover (17).

5. A highly stable safety valve and pipeline connection device according to claim 1, characterized in that: The valve stem portion is provided with a valve stem (18), the outer surface of the valve stem (18) is sleeved with a spring (19), and the upper end of the spring (19) is provided with a spring seat (20).

6. A highly stable safety valve and pipeline connection device according to claim 1, characterized in that: A screw sleeve gasket (22) is provided at the connection between the adjusting screw sleeve (21) and the valve cap (24), and the upper end of the adjusting screw sleeve (21) is matched with a small round nut (23).

7. A highly stable safety valve and pipeline connection device according to claim 1, characterized in that: The valve body (3) and the valve cover (17) are connected via studs (28) and fixed via stud hexagonal nuts (27); a hexagonal screw plug (4) is provided on the side of the valve body (3); a screw plug gasket (5) is provided at the connection between the hexagonal screw plug (4) and the valve body (3); a nameplate (25) is provided on the valve cover (17); and rivets (26) are provided at the four corners of the nameplate (25).

8. A highly stable safety valve and pipeline connection device according to claim 1, characterized in that: The valve body pipeline connection component comprises a valve body (3) pipeline connection upper part and a valve body (3) pipeline connection lower part, the valve body (3) pipeline connection upper part is arranged on the side of the valve body (3), the valve body (3) pipeline connection upper part is provided with a flange (29), and the flange (29) is provided with a pipeline connection threaded hole (30); the valve body (3) pipeline connection lower part is arranged below the valve body (3), the valve body (3) pipeline connection lower part is provided with a connection plate (31), and the connection plate (31) is provided with a plate hole (32).

9. A method for connecting a safety valve and a pipeline connecting device with high stability, characterized in that: The following steps are involved: Step 1. Preparation for installation: Check that the components of the safety valve and the pipe connection device are not damaged or damaged; confirm that the adjusting component, valve core component, lead seal (13) and steel wire (14) of the valve body (3), guide sleeve (15) and valve cover gasket (16) of the guide component, valve stem (18) and spring (19) of the valve stem, adjusting screw sleeve (21) and screw sleeve gasket (22) of the valve bonnet (24), stud (28) and stud hexagonal nut (27) of the valve body (3) and valve cover (17), hexagonal screw plug (4) and screw plug gasket (5) on the side of the valve body (3) are complete and normal; Step 2. Connecting the valve body (3) to the pipeline: Connect the connection plate (31) at the lower part of the pipeline connection of the valve body (3) to the lower pipeline; Use appropriate bolts to fasten the connection plate (31) to the pipeline through the plate hole (32) on the connection plate (31); Connect the flange (29) on the upper part of the valve body (3) to the side pipe; use bolts to pass through the pipe connection threaded holes (30) on the flange (29) to tightly connect the flange (29) to the pipe; Step 3. Install the valve core components: Install the retaining rings (10) on both sides of the valve disc (9), and then install the valve disc (9) inside the valve body (3); install the recoil disc (11) and the cushion block (12) in sequence above the valve disc (9), and ensure that they are firmly installed; connect the guide sleeve (15) of the guide component to the valve cover (17), install the valve cover gasket (16) at the connection, and then connect the guide component to the valve stem; put the spring (19) on the outer surface of the valve stem (18) of the valve stem, and install the spring seat (20) on the upper end of the spring (19); Step 4. Install the adjusting component: Install the adjusting ring (6) inside the valve body (3) and fix it with the adjusting ring set screw (7). Install the screw hexagonal nut (8) at the end of the adjusting ring set screw (7); Step 5. Overall assembly: connect the valve body (3) with the valve core component and the regulating component installed to the valve cover (17) through the stud (28), and fix them with the stud hexagonal nut (27); install the screw sleeve gasket (22) at the connection between the adjusting screw sleeve (21) and the valve cap (24), and then connect the adjusting screw sleeve (21) and the valve cap (24); install the upper end of the adjusting screw sleeve (21) in conjunction with the small round nut (23); Step 6. Debugging: Check whether all connection parts are tight and not loose; debug the safety valve and adjust the performance of the safety valve by adjusting components according to actual needs; Step 7. Inspection and maintenance: Install a label (25) on the valve cover (17) and fix the four corners of the label (25) with rivets (26); record the installation and commissioning process of the safety valve, including the installation time, commissioning parameters, and operator information; during the use of the safety valve, regularly inspect and maintain it to ensure its stable performance and safety and reliability; check whether the lead seal (13) and steel wire (14) are intact, and replace them in time if damaged; regularly check the working status of each component, and repair or replace them in time if any problems are found.

10. A method for connecting a safety valve with a pipeline connection device with high stability according to claim 9, characterized in that: Step 3. The safety valve flow formula for the valve core component is: 2π * * in: is the flow through the safety valve; is the flow coefficient; is the cross-sectional area of ​​the valve seat; is the pressure drop, i.e. the pressure difference before and after the valve; is the density of the fluid; Step 3. The pressure formula of the valve core component is: ； Where: P is the set pressure of the safety valve, usually in MPa; is the coefficient of the nominal valve port diameter, The coefficient of the outlet diameter is affected by the valve type and manufacturing standards, and is generally taken as 0.9~0.95; C is the calibration coefficient, which is related to the structure and calibration method of the safety valve, and is taken as 0.9~1.0; S is the size area of ​​the safety valve seat, in m²; G is the acceleration of gravity, and is taken as 9.8 m / s².

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