Take-off visualization early warning safety valve

Abstract

The utility model relates to the technical field of valves, in particular to a take-off visualization early warning safety valve, which is convenient for workers to monitor the take-off state of a valve rod and the operation state of the safety valve, and improves the safety and the reliability. Comprising a valve seat assembly, a valve ring, a fixing block, a valve clack, a guide sleeve, a valve deck, a spring, a valve rod and a valve bonnet, the valve ring is arranged on the upper portion of the valve seat assembly, a pressure relief cavity is formed in the valve seat assembly, an opening is formed in the upper end of the pressure relief cavity, a cavity is formed in the valve ring, a pressure relief hole communicated with the cavity is formed in the valve ring, and the upper portion of the pressure relief cavity is located in the cavity; the valve clack covers the upper end of the pressure relief cavity and is used for sealing the pressure relief cavity, and the guide sleeve is fixedly installed on the valve ring.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a visual early warning safety valve for taking off. Background Art

[0002] The pressure relief safety valve is a type of valve. When the medium pressure in the pipeline is too high, it automatically discharges part of the medium in the pipeline to reduce the pressure in the pipeline to an appropriate pressure. It is often used to protect the safety of equipment and pipelines. The spring-type safety valve is a type of pressure relief safety valve. The spring-type safety valve in the prior art is as shown in the attached manual. Figure 1 , which includes a valve seat assembly, a valve ring, a fixing block, a valve disc, a guide sleeve, a valve cover, a spring, a valve stem and a valve bonnet. A valve ring is arranged on the upper part of the valve seat assembly, a pressure relief chamber is arranged in the valve seat assembly, the upper end of the pressure relief chamber is an opening, a chamber is arranged in the valve ring, a pressure relief hole connected with the chamber is arranged on the valve ring, the upper part of the pressure relief chamber is located in the chamber, the valve disc covers the upper end of the pressure relief chamber, the valve disc is used to seal the pressure relief chamber, the guide sleeve is fixedly mounted on the valve ring, the upper part of the valve disc is slidably mounted on the guide sleeve, the valve cover is fixedly mounted on the upper end of the guide sleeve, the lower end of the spring is fixedly mounted on the valve stem through a fixing block, the upper end of the spring is fixedly mounted on the upper part of the valve cover, and the valve bonnet is fixedly mounted on the upper end of the valve cover; when it is used, the valve seat assembly is mounted on the pipeline, so that the pressure relief chamber of the valve seat assembly is connected with the pipeline, when the pipeline is used to transport the medium When the medium pressure is high, the pressure of the medium will be transmitted to the valve disc through the pressure relief chamber of the valve seat assembly. When the medium pressure in the pipeline is too high, the medium will push the valve disc open at the upper end of the pressure relief chamber, and then the medium will be discharged through the upper end of the pressure relief chamber and then discharged to the outside through the pressure relief port. When the medium pressure in the pipeline drops to a suitable level, the spring will lower the valve stem through the fixed block under the action of the spring force, and the valve stem will drive the valve disc to drop until the lower end of the valve disc contacts the upper end of the pressure relief chamber again, so that the valve disc can seal the pressure relief chamber. The following problems exist during use: when the medium pressure in the pipeline is too high, the valve stem will return to its initial position after the medium pressure in the pipeline returns to normal after it jumps. It is not easy for the staff to detect whether the valve stem has jumped, and the staff cannot grasp the operating status of the safety valve at any time, resulting in poor safety. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a visual warning safety valve for taking off, which facilitates the staff to monitor the valve stem take-off status, facilitates the staff to monitor the operating status of the safety valve, and improves the safety and reliability.

[0004] The utility model provides a visual early-jump warning safety valve, comprising a valve seat assembly, a valve ring, a fixing block, a valve disc, a guide sleeve, a valve cover, a spring, a valve stem and a valve bonnet. The upper part of the valve seat assembly is provided with a valve ring, a pressure relief chamber is provided in the valve seat assembly, the upper end of the pressure relief chamber is an opening, a chamber is provided in the valve ring, a pressure relief hole connected with the chamber is provided on the valve ring, the upper part of the pressure relief chamber is located in the chamber, the valve disc covers the upper end of the pressure relief chamber, the valve disc is used to seal the pressure relief chamber, the guide sleeve is fixedly mounted on the valve ring, the upper part of the valve disc is slidably mounted on the guide sleeve up and down, the valve cover is fixedly mounted on the upper end of the guide sleeve, the lower end of the spring is fixedly mounted on the valve stem through the fixing block, the lower end of the valve stem is fixedly mounted on the valve disc, the upper end of the spring is fixedly mounted on the upper part of the valve cover, and the valve bonnet is fixedly mounted on the upper end of the valve cover; it also includes a controller and a valve stem monitoring assembly, the valve stem monitoring assembly is mounted on the upper ends of the valve bonnet and the valve stem, the valve stem monitoring assembly is used to detect the working state of the valve stem, and the valve stem monitoring assembly is connected to the controller; the valve seat is fixedly mounted on the valve ring, the upper part of the valve disc is slidably mounted on the guide sleeve up and down, the valve cover is fixedly mounted on the upper end of the guide sleeve, the lower end of the spring is fixedly mounted on the valve stem through the fixing block, the lower end of the valve stem is fixedly mounted on the valve disc, the upper end of the spring is fixedly mounted on the upper part of the valve cover, and the valve bonnet is fixedly mounted on the upper end of the valve cover; it also includes a controller and a valve stem monitoring assembly, the valve stem monitoring assembly is mounted on the upper ends of the valve bonnet and the valve stem, the valve stem monitoring assembly is used to detect the working state of The assembly is installed on the pipeline so that the pressure relief chamber of the valve seat assembly is connected to the pipeline. When the pipeline is used to transport the medium, the pressure of the medium will be transmitted to the valve disc through the pressure relief chamber of the valve seat assembly at the same time. When the medium pressure in the pipeline is too large, the medium pushes the valve disc upward at the upper end of the pressure relief chamber, and the valve disc drives the valve stem to move upward. After that, the medium is discharged through the upper end of the pressure relief chamber and then discharged to the outside through the pressure relief port. After the medium pressure in the pipeline drops to a suitable level, under the action of the spring force, the spring causes the valve stem to drop through the fixed block, and the valve stem drives the valve disc to drop until the lower end of the valve disc contacts the upper end of the pressure relief chamber again, so that the valve disc seals the pressure relief chamber. During this process, the valve stem monitoring assembly records the movement of the valve stem and transmits the movement of the valve stem to the controller. The staff can directly know whether the valve stem has jumped based on the information transmitted in the controller, which is convenient for the staff to monitor the operating status of the safety valve and improves the safety and reliability during use.

[0005] Preferably, the valve stem monitoring assembly includes a fixed rod, a jump spring, a jump rod and a rotating shaft, the fixed rod is fixedly mounted on the valve cap, the right part of the jump spring is fixedly mounted on the fixed rod, the jump spring is fixedly mounted on the upper end of the valve stem, the rotating shaft is rotatably mounted on the valve cap, the left part of the jump rod is rotatably mounted on the rotating shaft, and the right end of the jump rod is in contact with the upper end of the left part of the jump spring; when the valve stem moves upward, the valve stem drives the left part of the jump spring to move upward, and the left part of the jump spring pushes the right part of the jump rod to rotate, so that the jump rod rotates around the rotating shaft, so that the jump rod is out of contact with the jump spring, and then the jump rod rotates to the position as shown in the attached manual Figure 3 The staff can infer whether the valve stem has jumped according to the state of the jump rod. It is easy to use and has high reliability.

[0006] Preferably, there are two groups of fixing rods, and the right part of the take-off spring piece is fixedly mounted on the two groups of fixing rods; through the above arrangement, the stability of the right part of the take-off spring piece is further improved.

[0007] Preferably, a movable anchor point is provided on the fixed rod, and the right part of the take-off spring is fixedly mounted on the anchor point on the fixed rod; through the above arrangement, the fixed position of the take-off spring on the fixed rod can be adjusted according to the height of the valve stem, which can be suitable for different pressure relief pressures and is easy to use.

[0008] Preferably, a sensing element is provided on the left portion of the take-off spring piece, the sensing element contacts the right portion of the take-off rod, and the sensing element is connected to the controller; when the valve stem takes off, the valve stem causes the sensing element to move upward through the take-off spring piece, and the sensing element pushes the right portion of the take-off rod to move upward, after which the sensing element transmits the reaction force it receives to the controller, and the controller can infer the take-off pressure of the valve stem based on the received pressure information, thereby facilitating the monitoring of the take-off pressure and improving reliability.

[0009] Preferably, a sealing ring is provided at the lower end of the valve disc; through the above arrangement, the sealing effect between the sealing ring and the valve seat assembly is improved.

[0010] Preferably, a back pressure seat is provided on the upper portion of the valve cover, and the upper end of the spring is fixedly connected to the back pressure seat.

[0011] Compared with the prior art, the utility model has the following beneficial effects: it facilitates the staff to monitor the valve stem jump state, facilitates the staff to monitor the safety valve operation state, and improves safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the prior art;

[0013] Figure 2 It is a schematic diagram of the structure of the valve stem monitoring assembly and the valve bonnet;

[0014] Figure 3 It is a structural schematic diagram of the valve stem monitoring component after the valve stem jumps.

[0015] Markings in the attached figure: 1. valve seat assembly; 2. valve ring; 3. pressure relief port; 4. sealing ring; 5. fixing block; 6. valve disc; 7. guide sleeve; 8. valve cover; 9. spring; 10. valve stem; 12. valve cap; 13. controller; 14. fixing rod; 15. take-off spring; 16. take-off rod; 17. rotating shaft; 18. sensing element; 19. back pressure seat. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0017] It should be noted in advance that: Figure 2 This is a schematic diagram of the results before the valve stem jumps. Figure 3 It is a schematic diagram of the structure after the valve stem jumps. Example

[0018] like Figures 1 to 3 The utility model comprises a valve seat assembly 1, a valve ring 2, a fixing block 5, a valve disc 6, a guide sleeve 7, a valve cover 8, a spring 9, a valve stem 10 and a valve cap 12. The upper part of the valve seat assembly 1 is provided with a valve ring 2, a pressure relief cavity is provided in the valve seat assembly 1, the upper end of the pressure relief cavity is an opening, a chamber is provided in the valve ring 2, a pressure relief hole connected with the chamber is provided on the valve ring 2, the upper part of the pressure relief cavity is located in the cavity, the valve disc 6 covers the upper end of the pressure relief cavity, the valve disc 6 is used to seal the pressure relief cavity, the guide sleeve 7 is fixedly installed on the valve ring 2, and the valve The upper part of the flap 6 is slidably mounted on the guide sleeve 7, the valve cover 8 is fixedly mounted on the upper end of the guide sleeve 7, the lower end of the spring 9 is fixedly mounted on the valve stem 10 through the fixing block 5, the lower end of the valve stem 10 is fixedly mounted on the valve flap 6, the upper end of the spring 9 is fixedly mounted on the upper part of the valve cover 8, and the valve bonnet 12 is fixedly mounted on the upper end of the valve cover 8; it also includes a controller 13 and a valve stem monitoring assembly, the valve stem monitoring assembly is mounted on the valve bonnet 12 and the upper end of the valve stem 10, the valve stem monitoring assembly is used to detect the working state of the valve stem 10, and the valve stem monitoring assembly is connected to the controller 13. The valve seat assembly 1 is installed on the pipeline so that the pressure relief chamber of the valve seat assembly 1 is connected with the pipeline. When the pipeline is used to transport the medium, the pressure of the medium will be transmitted to the valve disc 6 through the pressure relief chamber of the valve seat assembly 1 at the same time. When the medium pressure in the pipeline is too large, the medium pushes the valve disc 6 upward at the upper end of the pressure relief chamber, and the valve disc 6 drives the valve stem 10 to move upward. Then, the medium is discharged through the upper end of the pressure relief chamber and discharged to the outside through the pressure relief port 3. When the medium pressure in the pipeline drops to a suitable level, under the action of the elastic force of the spring 9, the spring 9 causes the valve stem 10 to drop through the fixing block 5, and the valve stem 10 drives the valve disc 6 to drop until the lower end of the valve disc 6 contacts the upper end of the pressure relief chamber again, so that the valve disc 6 seals the pressure relief chamber. In this process, the valve stem monitoring assembly records the movement of the valve stem 10 and transmits the movement of the valve stem 10 to the controller 13. The staff can directly know whether the valve stem 10 has a jump phenomenon based on the information transmitted in the controller 13, which is convenient for the staff to monitor the operating status of the safety valve and improves the safety and reliability during use.

[0019] like Figure 2 and Figure 3The valve stem monitoring assembly includes a fixed rod 14, a jump-off spring piece 15, a jump-off rod 16 and a rotating shaft 17. The fixed rod 14 is fixedly mounted on the valve bonnet 12, the right part of the jump-off spring piece 15 is fixedly mounted on the fixed rod 14, the jump-off spring piece 15 is fixedly mounted on the upper end of the valve stem 10, the rotating shaft 17 is rotatably mounted on the valve bonnet 12, the left part of the jump-off rod 16 is rotatably mounted on the rotating shaft 17, and the right end of the jump-off rod 16 contacts the upper end of the left part of the jump-off spring piece 15; when the valve stem 10 moves upward, the valve stem 10 drives the left part of the jump-off spring piece 15 to move upward, and the left part of the jump-off spring piece 15 pushes the right part of the jump-off rod 16 to rotate, so that the jump-off rod 16 rotates around the rotating shaft 17, so that the jump-off rod 16 is out of contact with the jump-off spring piece 15, and then the jump-off rod 16 rotates to the upper end of the left part of the jump-off spring piece 15 as shown in the attached manual Figure 3 The staff can infer whether the valve stem 10 has been tripped according to the state of the tripping rod 16, which is convenient to use and has high reliability. Figure 3 After the valve stem 10 is in the state, it can be known that the valve stem 10 has jumped. After that, the staff manually turns the jumping rod 16 back to the state shown in the attached manual. Figure 2 status.

[0020] There are two groups of fixing rods 14 , and the right part of the take-off spring piece 15 is fixedly mounted on the two groups of fixing rods 14 .

[0021] like Figure 2 A movable anchor point is provided on the fixed rod 14, and the right part of the jump spring 15 is fixedly installed on the anchor point on the fixed rod 14; through the above arrangement, the fixed position of the jump spring 15 on the fixed rod 14 can be adjusted according to the height of the valve stem 10, which can be suitable for different pressure relief pressures and is easy to use.

[0022] A sensing element 18 is provided on the left portion of the take-off spring piece 15, the sensing element 18 contacts the right portion of the take-off rod 16, and the sensing element 18 is connected to the controller 13; when the valve stem 10 takes off, the valve stem 10 causes the sensing element 18 to move upward through the take-off spring piece 15, and the sensing element 18 pushes the right portion of the take-off rod 16 to move upward, and then the sensing element 18 transmits the reaction force received to the controller 13, and the controller 13 can infer the take-off pressure of the valve stem 10 based on the received pressure information, thereby facilitating the monitoring of the take-off pressure and improving reliability.

[0023] A sealing ring 4 is arranged at the lower end of the valve disc 6 ; through the above arrangement, the sealing effect between the sealing ring 4 and the valve seat assembly 1 is improved.

[0024] The movable anchor point in this case can be a U-shaped pipe buckle clamp.

[0025] In summary, the beneficial effects of the utility model are:

[0026] 1. The setting of the take-off spring and the take-off rod makes the safety valve take-off behavior visual, which is convenient for the staff to manage and maintain the safety valve.

[0027] 2. By providing the sensing element 18, it is convenient for the staff to monitor the starting pressure and the operating status of the safety valve.

[0028] The valve seat assembly 1, valve ring 2, sealing ring 4, valve disc 6, guide sleeve 7, valve cover 8, spring 9, valve cap 12, controller 13 and sensing element 18 of the visual warning safety valve for taking off of the utility model are all purchased on the market. Technical personnel in the industry only need to install and operate them according to the accompanying instruction manual, without the need for technical personnel in this field to make creative labor.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A visual early warning safety valve, comprising a valve seat assembly (1), a valve ring (2), a fixing block (5), a valve disc (6), a guide sleeve (7), a valve cover (8), a spring (9), a valve stem (10) and a valve cap (12), wherein the valve seat assembly (1) is provided with a valve ring (2) at the upper part, a pressure relief cavity is provided in the valve seat assembly (1), the upper end of the pressure relief cavity is an opening, a chamber is provided in the valve ring (2), a pressure relief hole connected to the chamber is provided on the valve ring (2), the upper part of the pressure relief cavity is located in the cavity, and the valve disc (6) covers the pressure relief cavity. The valve disc (6) is used to seal the pressure relief chamber, the guide sleeve (7) is fixedly mounted on the valve ring (2), the upper part of the valve disc (6) is slidably mounted on the guide sleeve (7) up and down, the valve cover (8) is fixedly mounted on the upper end of the guide sleeve (7), the lower end of the spring (9) is fixedly mounted on the valve stem (10) through a fixing block (5), the lower end of the valve stem (10) is fixedly mounted on the valve disc (6), the upper end of the spring (9) is fixedly mounted on the upper part of the valve cover (8), and the valve cap (12) is fixedly mounted on the upper end of the valve cover (8); the valve ring (2) is fixedly mounted on the guide sleeve (7), the valve disc (6) is fixedly mounted on the upper part of the valve cover (8), and the valve cap (12) is fixedly mounted on the upper end of the valve cover (8); the valve ring (2) is fixedly mounted on the guide sleeve (7), the valve cover (8) is fixedly mounted on the upper end of ... cover (8) is fixedly mounted on the upper end of the guide sleeve (7), the valve cover (8) is fixedly mounted on the upper end of the guide sleeve (7), the valve ring (2) is fixedly mounted on the guide sleeve (7), the valve cover (8) is fixedly mounted on It also includes a controller (13) and a valve stem monitoring assembly. The valve stem monitoring assembly is mounted on the valve cap (12) and the upper end of the valve stem (10). The valve stem monitoring assembly is used to detect the working state of the valve stem (10). The valve stem monitoring assembly is connected to the controller (13).

2. A visual early warning safety valve for taking off as claimed in claim 1, characterized in that: The valve stem monitoring assembly comprises a fixed rod (14), a jump spring (15), a jump rod (16) and a rotating shaft (17); the fixed rod (14) is fixedly mounted on the valve cap (12); the right part of the jump spring (15) is fixedly mounted on the fixed rod (14); the jump spring (15) is fixedly mounted on the upper end of the valve stem (10); the rotating shaft (17) is rotatably mounted on the valve cap (12); the left part of the jump rod (16) is rotatably mounted on the rotating shaft (17); and the right end of the jump rod (16) contacts the upper end of the left part of the jump spring (15).

3. A visual early warning safety valve for taking off as claimed in claim 2, characterized in that: The number of the fixing rods (14) is two groups, and the right part of the take-off spring piece (15) is fixedly mounted on the two groups of fixing rods (14).

4. A visual early warning safety valve for taking off as claimed in claim 2, characterized in that: A movable anchor point is provided on the fixing rod (14), and the right part of the take-off spring (15) is fixedly mounted on the anchor point on the fixing rod (14).

5. A visual early warning safety valve for taking off as claimed in claim 2, characterized in that: A sensing element (18) is provided on the left portion of the take-off spring piece (15), the sensing element (18) contacts the right portion of the take-off rod (16), and the sensing element (18) is connected to the controller (13).

6. A visual early warning safety valve for taking off as claimed in claim 1, characterized in that: A sealing ring (4) is provided at the lower end of the valve flap (6).

7. The visual early warning safety valve according to claim 1, characterized in that: A back pressure seat (19) is provided on the upper portion of the valve cover (8), and the upper end of the spring (9) is fixedly connected to the back pressure seat (19).

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