High-temperature-resistant and corrosion-resistant ball valve

Abstract

The utility model discloses a ball valve resistant to high temperature and corrosion, which belongs to the technical field of ball valves, and comprises a valve body, a valve cover and a valve core, the top of the valve body is fixedly connected with a valve rod sleeve, the top of the valve rod sleeve is fixedly connected with a first connecting flange, and the upper surface of the first connecting flange is provided with a first groove; a first air bag is arranged in the first groove, an air cavity communicating with the first air bag is formed in the top of the interior of the valve rod sleeve, and pressure sensors are inlaid in the cavity wall of the top of the air cavity in a circumferential array mode. By means of the pressure sensor and the first air bag, sealing measures can be taken on the valve body when leakage occurs, so that medium leakage is prevented, major accidents caused by medium leakage are effectively avoided, workers are reminded to overhaul in time, and the safety performance of the ball valve is improved.

Description

Technical Field

[0001] This utility model belongs to the field of ball valve technology, specifically relating to a ball valve that is resistant to high temperature and corrosion. Background Technology

[0002] Ball valves are widely used in pipeline systems and are a type of valve structure used to control the flow of media.

[0003] Publication No. CN217898871U, Publication Date 20221125, discloses a corrosion-resistant and high-temperature resistant ceramic ball valve, including a valve body assembly, a valve cavity assembly is provided inside the valve body assembly, and a valve assembly and a valve seat assembly are respectively provided on the upper and lower sides of the valve cavity assembly.

[0004] In the prior art, including the aforementioned patent, the valve core of the ball valve rotates repeatedly within the valve body, and the valve core rubs repeatedly against the inner wall of the valve body, which easily causes wear. After wear, gaps are easily formed between the valve core and the valve body, which can easily lead to leakage between the valve body, the valve cover, and the valve stem. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a ball valve that is resistant to high temperature and corrosion.

[0006] The technical solution adopted to solve the above technical problems is as follows: a high-temperature and corrosion-resistant ball valve, including a valve body, a valve cover, and a valve core. A valve stem sleeve is fixedly connected to the top of the valve body, and a first connecting flange is fixedly connected to the top of the valve stem sleeve. A first groove is formed on the upper surface of the first connecting flange, and a first air bladder is disposed in the first groove. An air chamber communicating with the first air bladder is disposed at the top of the valve stem sleeve. Pressure sensors are embedded in a circumferential array on the top wall of the air chamber. A spring is fixedly connected to the pressure sensor, and a second fixing ring is fixedly connected to the lower end of the spring. A fixing cylinder is fixedly connected to the lower surface of the second fixing ring, and a first fixing ring is fixedly connected to the lower end of the fixing cylinder. A second connecting flange is fixedly connected to the bottom of the valve cover, and a third groove corresponding to the first groove is formed on the lower surface of the second connecting flange.

[0007] Through the above technical solution, when the valve core wears down during use, a small amount of medium will seep into the valve stem sleeve. When the valve core is severely worn, the medium will continuously seep into the valve stem sleeve, increasing the pressure inside the valve stem sleeve and pushing the first fixed ring upward. This, in turn, drives the second fixed ring to move upward in the air chamber through the fixed cylinder, compressing the spring. This causes the pressure sensor to detect the leak and transmit the signal to the control center, alerting the control center that the ball valve is leaking. This allows for timely handling and effectively prevents serious accidents. Simultaneously, the second fixed ring compresses the gas in the air chamber into the first and second air bladders, causing them to inflate and bulge. The first air bladder fills the gap between the first and third grooves, sealing the connection between the first and second connecting flanges. This achieves a sealing effect on the valve body in the event of leakage, preventing medium leakage and effectively avoiding major accidents caused by medium leakage. It also promptly alerts personnel for maintenance, improving the safety performance of the ball valve.

[0008] Furthermore, a fourth groove is provided on the inner wall of the upper end of the valve cover, and a second airbag is provided in the fourth groove.

[0009] Furthermore, limit posts are symmetrically arranged on the lower surface of the second connecting flange, and air holes are opened in the limit posts. The air holes are connected to the second airbag through an air pipe.

[0010] Furthermore, symmetrical limit holes are provided on the first connecting flange, and the limit holes cooperate with the limit pins.

[0011] Furthermore, the pores are connected to the air cavity.

[0012] Furthermore, the valve core has a through hole, a valve stem is fixedly connected to the valve core, a second groove corresponding to the fourth groove is provided on the valve stem, a handwheel is fixedly connected to the top of the valve stem, and the valve core is made of ceramic material.

[0013] Through the above technical solution, the second fixing ring squeezes the gas in the air chamber into the first and second air bladders, causing the first and second air bladders to inflate and bulge. The first air bladder fills the gap between the first and third grooves, thereby sealing the connection gap between the first and second connecting flanges. The second air bladder fills the gap between the second and fourth grooves, thereby sealing the gap between the valve cover and the valve stem. This achieves active sealing measures for gaps in the event of leakage, further preventing the medium from flowing out of the valve body. It can take multi-directional sealing measures in the event of leakage, effectively preventing the leakage of the medium.

[0014] Furthermore, the first connecting flange and the second connecting flange are fixedly connected by bolts.

[0015] Furthermore, the valve body is symmetrically provided with pipe connection flanges.

[0016] The beneficial effects of this utility model are as follows:

[0017] (1) This utility model, through the setting of pressure sensor and first air bladder, when the valve core is worn during use, a small amount of medium will seep into the valve stem sleeve. When the valve core is severely worn, the medium will continuously seep into the valve stem sleeve, the pressure inside the valve stem sleeve will increase, and push the first fixed ring to move upward. Thus, the fixed cylinder drives the second fixed ring to move upward in the air chamber and squeeze the spring, so that the pressure sensor is sensed and transmits the signal to the control center, reminding the control center that the ball valve is leaking, so that it can be dealt with in time and effectively avoid serious accidents. At the same time, the second fixed ring squeezes the gas in the air chamber into the first air bladder and the second air bladder, so that the first air bladder and the second air bladder are inflated and deformed. The first air bladder fills the gap between the first groove and the third groove, thereby sealing the connection gap between the first connecting flange and the second connecting flange. It can achieve the sealing measures of the valve body when leakage occurs, thereby preventing the medium from leaking out, effectively avoiding major accidents caused by medium leakage, and timely reminding the staff to carry out maintenance, thus improving the safety performance of the ball valve.

[0018] (2) This utility model uses a second airbag and a second fixing ring to squeeze the gas in the air chamber into the first and second airbags, thereby inflating the first and second airbags. The first airbag fills the gap between the first and third grooves, thereby sealing the connection gap between the first and second connecting flanges. The second airbag fills the gap between the second and fourth grooves, thereby sealing the gap between the valve cover and the valve stem. This allows for active sealing of the gaps when leakage occurs, further preventing the medium from flowing out of the valve body. It can take multi-directional sealing measures when leakage occurs, effectively preventing the leakage of the medium. Attached Figure Description

[0019] Figure 1 This is a perspective view of a high-temperature and corrosion-resistant ball valve according to this utility model;

[0020] Figure 2 This is an exploded three-dimensional top view of a high-temperature and corrosion-resistant ball valve according to this utility model;

[0021] Figure 3 This is an exploded three-dimensional bottom view of a high-temperature and corrosion-resistant ball valve according to this utility model;

[0022] Figure 4 This is a cross-sectional perspective view of a high-temperature and corrosion-resistant ball valve according to this utility model.

[0023] Figure 5This is an enlarged view of structure A of a high-temperature and corrosion-resistant ball valve according to this utility model;

[0024] Figure 6 This is an enlarged view of structure B of a high-temperature and corrosion-resistant ball valve according to this utility model;

[0025] Figure 7 This is an exploded view of the valve body of a high-temperature and corrosion-resistant ball valve according to this utility model.

[0026] Reference numerals: 1. Valve body; 2. Pipe connection flange; 3. Valve stem sleeve; 4. First connecting flange; 5. Second connecting flange; 6. Valve cover; 7. Air pipe; 8. Handwheel; 9. Valve stem; 10. Bolt; 11. First air bladder; 12. First groove; 13. Limiting hole; 14. Second groove; 15. Valve core; 16. Through hole; 17. Limiting post; 18. Air hole; 19. Third groove; 20. Second air bladder; 21. Fourth groove; 22. First fixing ring; 23. Fixing cylinder; 24. Second fixing ring; 25. Air chamber; 26. Spring; 27. Pressure sensor. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] like Figure 1-7 As shown, this embodiment of a high-temperature and corrosion-resistant ball valve includes a valve body 1, a valve cover 6, and a valve core 15. A valve stem sleeve 3 is fixedly connected to the top of the valve body 1, and a first connecting flange 4 is fixedly connected to the top of the valve stem sleeve 3. A first groove 12 is formed on the upper surface of the first connecting flange 4, and a first air bladder 11 is disposed in the first groove 12. An air chamber 25 communicating with the first air bladder 11 is disposed inside the top of the valve stem sleeve 3. Pressure sensors 27 are embedded in a circular array on the top wall of the air chamber 25, and a spring 26 is fixedly connected to the pressure sensor 27. A second fixing ring 24 is fixedly connected to the lower end of the spring 26. A fixing cylinder 23 is fixedly connected to the lower surface of the second fixing ring 24. A first fixing ring 22 is fixedly connected to the lower end of the fixing cylinder 23. A second connecting flange 5 is fixedly connected to the bottom of the valve cover 6. A third groove 19 corresponding to the first groove 12 is opened on the lower surface of the second connecting flange 5. This enables the valve body to be sealed in case of leakage, thereby preventing the medium from leaking out, effectively avoiding major accidents caused by medium leakage, and promptly reminding the staff to carry out maintenance, thus improving the safety performance of the ball valve.

[0029] A fourth groove 21 is provided on the inner wall of the upper end of the valve cover 6, and a second airbag 20 is provided in the fourth groove 21.

[0030] The lower surface of the second connecting flange 5 is symmetrically provided with limit posts 17, and the limit posts 17 are provided with air holes 18. The air holes 18 are connected to the second airbag 20 through an air pipe 7.

[0031] The first connecting flange 4 has symmetrical limit holes 13, which are engaged with the limit pins 17.

[0032] The vent 18 is connected to the air chamber 25.

[0033] The valve core 15 has a through hole 16, and a valve stem 9 is fixedly connected to the valve core 15. The valve stem 9 has a second groove 14 that corresponds to the fourth groove 21. A handwheel 8 is fixedly connected to the top of the valve stem 9. The valve core 15 is made of ceramic material, which improves the high temperature resistance and corrosion resistance of the ball valve. In the event of leakage, it can take multi-directional sealing measures to effectively prevent the leakage of media.

[0034] The first connecting flange 4 and the second connecting flange 5 are fixedly connected by bolts 10.

[0035] Pipe connection flanges 2 are symmetrically arranged on the valve body 1.

[0036] The working principle of this embodiment is as follows: the valve body 1 is installed into the pipeline system through the pipeline connection flange 2. Rotating the handwheel 8 causes the valve core 15 to rotate through the valve stem 9, thereby connecting the two ends of the through hole 16 with the pipeline port, allowing the medium to pass through and controlling the flow of the medium. The valve core 15 is made of ceramic material, which has the characteristics of high temperature resistance and corrosion resistance. When the surface of the valve core 15 is worn during use, a small amount of medium will seep into the valve stem sleeve 3. When the valve core 15 is severely worn, the medium will continuously seep into the valve stem sleeve 3, increasing the pressure inside the valve stem sleeve 3 and pushing the first fixed ring 22 upward. This, in turn, drives the second fixed ring 24 to move upward in the air chamber 25 through the fixed cylinder 23, compressing the spring 26. This causes the pressure sensor 27 to be sensed and transmit the signal to the control center. The system alerts the control center to a leak in the ball valve, allowing for timely handling and effectively preventing serious accidents. Simultaneously, the second fixing ring 24 compresses the gas in the air chamber 25 into the first air bladder 11 and the second air bladder 20, causing them to inflate and deform. The first air bladder 11 fills the gap between the first groove 12 and the third groove 19, sealing the connection gap between the first connecting flange 4 and the second connecting flange 5. The second air bladder 20 fills the gap between the second groove 14 and the fourth groove 21, sealing the gap between the valve cover 6 and the valve stem 9. This proactive sealing measure is implemented to prevent the medium from flowing outside the valve body in the event of leakage. The pressure sensor 27 is an ELE-801 pressure sensor.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A high-temperature and corrosion-resistant ball valve, comprising a valve body (1), a valve cover (6), and a valve core (15), characterized in that: A valve stem sleeve (3) is fixedly connected to the top of the valve body (1). A first connecting flange (4) is fixedly connected to the top of the valve stem sleeve (3). A first groove (12) is provided on the upper surface of the first connecting flange (4). A first air bladder (11) is provided in the first groove (12). An air chamber (25) communicating with the first air bladder (11) is provided at the top of the valve stem sleeve (3). A pressure sensor (27) is embedded in a circular array on the top wall of the air chamber (25). A spring (26) is fixedly connected to the pressure sensor (27). A second fixing ring (24) is fixedly connected to the lower end of the spring (26). A fixing cylinder (23) is fixedly connected to the lower surface of the second fixing ring (24). A first fixing ring (22) is fixedly connected to the lower end of the fixing cylinder (23). A second connecting flange (5) is fixedly connected to the bottom of the valve cover (6). A third groove (19) corresponding to the first groove (12) is provided on the lower surface of the second connecting flange (5).

2. The high-temperature and corrosion-resistant ball valve according to claim 1, characterized in that, A fourth groove (21) is provided on the inner wall of the upper end of the valve cover (6), and a second airbag (20) is provided in the fourth groove (21).

3. The high-temperature and corrosion-resistant ball valve according to claim 1, characterized in that, The second connecting flange (5) has symmetrically arranged limit posts (17) on its lower surface. The limit posts (17) have air holes (18) inside them. The air holes (18) are connected to the second airbag (20) through an air pipe (7).

4. The high-temperature and corrosion-resistant ball valve according to claim 1, characterized in that, The first connecting flange (4) has symmetrically provided limiting holes (13), which are engaged with the pins of the limiting post (17).

5. A high-temperature and corrosion-resistant ball valve according to claim 3, characterized in that, The vent (18) is connected to the air cavity (25).

6. The high-temperature and corrosion-resistant ball valve according to claim 1, characterized in that, The valve core (15) has a through hole (16), and a valve stem (9) is fixedly connected to the valve core (15). The valve stem (9) has a second groove (14) that corresponds to the fourth groove (21). A handwheel (8) is fixedly connected to the top of the valve stem (9). The valve core (15) is made of ceramic material.

7. The high-temperature and corrosion-resistant ball valve according to claim 1, characterized in that, The first connecting flange (4) and the second connecting flange (5) are fixedly connected by bolts (10).

8. A high-temperature and corrosion-resistant ball valve according to claim 7, characterized in that: The valve body (1) is symmetrically provided with pipe connection flanges (2).

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