High-temperature and high-pressure wear-resistant ball valve

Abstract

The utility model provides a high-temperature high-pressure wear-resisting ball valve, which relates to the technical field of ball valves, and comprises a main valve body, a ball valve core and upper valve covers, the ball valve core is arranged on the inner side of the main valve body, the upper valve covers are fixed on the upper and lower parts of the main valve body through matching of flanges and bolts, the lower part of each upper valve cover is provided with an upper ring frame, and the bottom of each upper ring frame is convexly provided with an inclined guide bump; a middle sealing ring frame is arranged below the upper ring frame, side protruding frames are arranged on the two sides of the middle sealing ring frame in a protruding mode, and a lower annular rubber sealing block and a side rubber sealing block are fixedly arranged below the middle sealing ring frame and the side protruding frames. The upper ring frame presses the upper sealing rubber ring and the main valve body to complete second sealing, the situation that water flows in the upper gap and the lower gap of the ball valve element is avoided, the sealing effect in the high-temperature and high-pressure state is enhanced, and the problems that temperature changes easily cause deformation of the sealing face, and fluid flows to the gap between the ball valve element and the valve body and flows to the other side to cause leakage are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ball valve technical field especially relates to high temperature and high pressure wear -resistant ball valve. BACKGROUND

[0002] Ball valve is the valve for controlling fluid flow, ball valve is also the commonly used valve type in high temperature and high pressure pipeline, the valve body of ball valve usually adopts carbon steel, alloy steel, stainless steel or duplex stainless steel etc., the surface of the ball valve core of ball valve adopts special surface hardening treatment to improve wear resistance and hardness.

[0003] Ball valve realizes sealing through two sealing rings in the inside of two sides pipeline, the two sides of sealing ring are respectively and the valve body and ball valve core and fit to realize sealing, temperature change is easy to the deformation of sealing surface, the deformation of the fit surface of sealing ring and valve body or ball valve core appears gap, fluid will flow to the gap between ball valve core and valve body, fluid flows along the gap between ball valve core and valve body to the other side and occurs leakage, lead to the situation that there is still fluid flowing out after the closing of valve body. SUMMARY

[0004] The valve body of the utility model is provided with ball valve core, the first sealing ring of the two sides of ball valve core is sealed, the upper and lower of ball valve core are sealed by the lower annular rubber sealing block and the side rubber sealing block, the upper ring frame and the main valve body complete the second sealing, avoid the situation that ball valve core upper and lower gap string water, the sealing effect of ball valve core when closing is enhanced by double sealing cooperation, the upper ring frame is pushed down by the inclined guide lug and is close to ball valve core, the sealing pressure of the lower annular rubber sealing block and the side rubber sealing block to ball valve core is increased, the deformation of sealing surface caused by temperature change is compensated, the sealing effect of high temperature and high pressure state is enhanced, the reliable working performance of valve is ensured in long time operation, the maintenance cost and downtime are reduced.

[0005] The utility model discloses a high temperature and high pressure wear -resistant ball valve, and specifically includes: main valve body, ball valve core and upper valve cover, the inside of main valve body is provided with ball valve core, and the upper and lower flange disc of main valve body are fixed with upper valve cover and are provided with sealing rubber ring cooperation bolt, and the both sides of the middle part of main valve body are fixed with side connecting pipe and are provided with sealing rubber ring cooperation bolt, and the first inner sealing ring is fixed and sealed in the inside of the first end of side connecting pipe, and the first inner sealing ring is close to ball valve core one side and slides second sealing ring, and the sealing structure of first inner sealing ring and second sealing ring is same with the existing ball valve, and the screw support spring is arranged between first inner sealing ring and second sealing ring.

[0006] In at least some embodiments, the upper and lower of the ball valve core are fixedly provided with middle valve rods, the middle valve rod and the upper valve cover are rotationally connected and provided with sealing packing, the outer side of the ball valve core and the second sealing ring are kept in close contact and sealing, and the second sealing ring and the ball valve core are kept in close contact and sealing to realize sealing of both sides of the ball valve core.

[0007] In at least some embodiments, the lower part of the upper valve cover is provided with an upper ring frame, the upper ring frame is a circular plate structure, the bottom of the upper ring frame is provided with an inclined guide protrusion, one side of the upper sealing rubber ring is provided with an inclined surface structure, the lower part of the upper ring frame is provided with a middle sealing ring frame, the two sides of the middle sealing ring frame are provided with side protrusions, the lower part of the middle sealing ring frame and the side protrusions are fixedly provided with a lower annular rubber sealing block and a side rubber sealing block, and the upper part of the middle sealing ring frame and the side protrusions are provided with the upper sealing rubber ring.

[0008] In at least some embodiments, the middle sealing ring frame and the main valve body are vertically and slidably connected, and the bottom of the lower annular rubber sealing block and the side rubber sealing block keeps in close contact with the ball valve core.

[0009] In at least some embodiments, the center of the upper ring frame is fixedly connected with the middle valve rod, the lower part of the upper sealing rubber ring keeps in close contact with the main valve body, and the upper ring frame presses down the upper sealing rubber ring to realize sealing with the main valve body.

[0010] In at least some embodiments, the top of the middle sealing ring frame is provided with an inclined guide protrusion, the inclined guide protrusion of the bottom of the upper ring frame and the top inclined guide protrusion of the middle sealing ring frame keep in close contact and sliding, the upper ring frame realizes the downward movement of the middle sealing ring frame to the ball valve core through the sliding of the inclined guide protrusion and the top inclined guide protrusion of the middle sealing ring frame, and the sealing pressure of the lower annular rubber sealing block and the side rubber sealing block to the ball valve core is increased.

[0011] In at least some embodiments, when the upper ring frame rotates to a closed state along with the middle valve rod, the inclined guide protrusion of the bottom of the upper ring frame moves to the upper side of the top inclined guide protrusion of the middle sealing ring frame, the lower annular rubber sealing block and the side rubber sealing block keep in close contact with the ball valve core to form a sealing state, the upper sealing rubber ring further keeps in close contact with the main valve body, water flow is avoided from being mixed above the upper ring frame, and the upper ring frame presses down the upper sealing rubber ring to complete sealing with the main valve body.

[0012] The high-temperature high-pressure wear-resistant ball valve has the following beneficial effects:

[0013] When the middle valve rod and the ball valve core rotate to the closed state, the second sealing ring is attached and sealed on both sides of the ball valve core to perform the first sealing, the lower annular rubber sealing block and the side rubber sealing block seal the upper and lower sides of the ball valve core, the upper ring frame presses down the upper sealing rubber ring and the main valve body to complete the second sealing, the water leakage between the upper and lower gaps of the ball valve core is avoided, the sealing effect of the ball valve core when closed is enhanced, the sealing effect in the high temperature and high pressure state is enhanced, the reliable working performance of the valve during long time operation is ensured, and the maintenance cost and downtime are reduced.

[0014] The upper ring frame pushes the middle sealing ring frame downward to be close to the ball valve core through the inclined guide protrusion, the sealing pressure of the lower annular rubber sealing block and the side rubber sealing block on the ball valve core is increased, the deformation of the sealing surface caused by temperature change is compensated, and the wear of the lower annular rubber sealing block and the side rubber sealing block can also be compensated, the service life is prolonged, and the stability of the sealing effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0016] The drawings in the following description only relate to some embodiments of the present application, rather than limit the present application.

[0017] In the drawings:

[0018] Figure 1 A schematic view showing the overall structure of the present application is shown;

[0019] Figure 2 A schematic view showing the half-partial structure of the main valve body and the side connecting pipe of the present application is shown;

[0020] Figure 3 A schematic view showing the half-partial structure of the upper valve cover of the present application is shown;

[0021] Figure 4 A schematic view showing the structure of the upper valve cover, the upper ring frame, the middle sealing ring frame, the lower annular rubber sealing block and the upper sealing rubber ring of the present application in the separated state is shown;

[0022] Figure 5 A schematic view showing the structure of the main valve body of the present application is shown;

[0023] Figure 6 A schematic view showing the structure of the present application in the split state is shown;

[0024] LIST OF REFERENCE NUMERALS

[0025] 1、main valve body; 101、side connecting pipe; 102、first inner sealing ring; 103、second sealing ring;

[0026] 2、ball valve core; 201、middle valve rod;

[0027] 3. upper valve cover; 301. upper ring holder; 302. inclined guide protrusion; 303. middle sealing ring holder; 304. side protrusion holder; 305. lower annular rubber sealing block; 306. side rubber sealing block; 307. upper sealing rubber ring. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] Embodiment one: please refer to Figures 1 to 6 :

[0030] The utility model provides a high temperature and high pressure wear -resisting ball valve, include: main valve body 1, ball valve core 2 and upper valve cover 3, the both sides of the middle part of main valve body 1 are fixed with side connecting pipe 101 and set up sealing rubber ring with flange plate cooperation bolt, the inside fixed sealing of the first end of side connecting pipe 101 is provided with first inner sealing ring 102, first inner sealing ring 102 is close to ball valve core 2 one side and slides second sealing ring 103, and first inner sealing ring 102 and second sealing ring 103 are same with the sealing structure of existing ball valve, and spiral support spring is arranged between first inner sealing ring 102 and second sealing ring 103, the inside of main valve body 1 is provided with ball valve core 2, and the upper and lower of ball valve core 2 are fixedly provided with middle valve rod 201, and middle valve rod 201 and upper valve cover 3 are rotatably connected and set up sealing packing, and the outside of ball valve core 2 and second sealing ring 103 keep close sealing, and second sealing ring 103 and ball valve core 2 close sealing realize that ball valve core 2 both sides carry out first sealing, and the upper and lower of main valve body 1 are fixed with upper valve cover 3 and set up sealing rubber ring with flange plate cooperation bolt, and the lower part of upper valve cover 3 is provided with upper ring stand 301, and upper ring stand 301 is circular plate shape structure, and the bottom of upper ring stand 301 is provided with inclined guide boss 302, and one side of upper sealing rubber ring 307 is provided with inclined plane structure, and the below of upper ring stand 301 is provided with middle sealing ring stand 303, and the both sides of middle sealing ring stand 303 are provided with side boss 304, and the below of middle sealing ring stand 303 and side boss 304 are fixedly provided with lower annular rubber sealing block 305, side rubber sealing block 306, and the outside of the upper part of middle sealing ring stand 303 and side boss 304 is provided with upper sealing rubber ring 307 and keeps close around, and middle sealing ring stand 303 and main valve body 1 vertically slide and connect, and the bottom of lower annular rubber sealing block 305 and side rubber sealing block 306 all keep close with ball valve core 2, and the center of upper ring stand 301 and middle valve rod 201 are fixedly connected, and the lower part of upper sealing rubber ring 307 and main valve body 1 keep close contact, and upper ring stand 301 presses down upper sealing rubber ring 307 and carries out sealing with main valve body 1.

[0031] In the embodiment of the present disclosure, the top of the middle sealing ring stand 303 is provided with an inclined guide boss 302, the inclined guide boss 302 on the bottom of the upper ring stand 301 and the top inclined guide boss 302 on the middle sealing ring stand 303 slide and fit, the upper ring stand 301 realizes the downward movement of the middle sealing ring stand 303 close to the ball valve core 2 through the sliding of the inclined guide boss 302 and the top inclined guide boss 302 on the middle sealing ring stand 303, increases the sealing pressure of the lower annular rubber sealing block 305 and the side rubber sealing block 306 on the ball valve core 2, compensates the deformation of the sealing surface caused by temperature change, the pressure can also compensate the wear of the lower annular rubber sealing block 305 and the side rubber sealing block 306, and prolongs the service life of the lower annular rubber sealing block 305 and the side rubber sealing block 306.

[0032] In the embodiments of the present disclosure, when the upper ring frame 301 rotates with the middle valve rod 201 to the closed state, the inclined guide protrusions 302 at the bottom of the upper ring frame 301 move to the upper side of the inclined guide protrusions 302 at the top of the middle sealing ring frame 303, the lower annular rubber sealing block 305 and the side rubber sealing block 306 move to abut the ball valve core 2 to form a sealing state, the upper sealing rubber ring 307 further abuts the main valve body 1, to avoid water flow from being mixed above the upper ring frame 301, the upper ring frame 301 presses the upper sealing rubber ring 307 and the main valve body 1 to complete the second sealing, to avoid the gap between the ball valve core 2 and the main valve body 1 from mixing water, the double sealing cooperation enhances the sealing effect of the ball valve core 2 when closed, enhances the sealing effect in the high-temperature and high-pressure state, ensures the reliability of the valve during long-time operation, reduces the maintenance cost and shortens the downtime.

[0033] In the embodiments of the present disclosure, when the upper ring frame 301 rotates with the middle valve rod 201 to the closed state, the inclined guide protrusions 302 at the bottom of the upper ring frame 301 move to the upper side of the inclined guide protrusions 302 at the top of the middle sealing ring frame 303, the lower annular rubber sealing block 305 and the side rubber sealing block 306 move to abut the ball valve core 2 to form a sealing state, the upper sealing rubber ring 307 further abuts the main valve body 1, to avoid water flow from being mixed above the upper ring frame 301, the upper ring frame 301 presses the upper sealing rubber ring 307 and the main valve body 1 to complete the second sealing, to avoid the gap between the ball valve core 2 and the main valve body 1 from mixing water, the double sealing cooperation enhances the sealing effect of the ball valve core 2 when closed, enhances the sealing effect in the high-temperature and high-pressure state, ensures the reliability of the valve during long-time operation, reduces the maintenance cost and shortens the downtime.

[0034] The working principle of the embodiment is as follows: the ball valve core 2 and the main valve body 1 adopt special wear-resistant materials and surface treatment processes, the middle hole of the ball valve core 2 and the side connecting pipe 101 are aligned to be in communication and rotation, after the middle hole of the ball valve core 2 rotates by 90 degrees, the middle hole of the ball valve core 2 and the side connecting pipe 101 are disconnected and closed, the middle valve rod 201 and the ball valve core 2 rotate synchronously, the middle valve rod 201 can be opened and closed more labor-saving through the turbine worm cooperation or directly driven by the motor, when the middle valve rod 201 and the ball valve core 2 rotate to the closed state, the first inner sealing ring 102 and the second sealing ring 103 can be one rubber sealing ring or separated to keep mutual sliding and combined through the spiral spring, the second sealing ring 103 and the ball valve core 2 are attached and sealed to realize the first sealing of the two sides of the ball valve core 2, the middle valve rod 201 and the upper ring frame 301 move synchronously, the inclined guide lugs 302 of the upper ring frame 301 move to the upper part along the inclined surface of the inclined guide lugs 302 of the middle sealing ring frame 303, push the middle sealing ring frame 303 to move downward, the middle sealing ring frame 303 and the side lugs 304, the lower annular rubber sealing block 305 and the side rubber sealing block 306 move downward synchronously, the lower annular rubber sealing block 305 and the side rubber sealing block 306 seal the upper and lower parts of the middle part of the ball valve core 2, the upper sealing rubber ring 307 is a convex platform structure at the upper part of the upper ring frame 301, is between the upper ring frame 301 and the main valve body 1, the upper ring frame 301 presses the upper sealing rubber ring 307, the upper sealing rubber ring 307 further attaches to the main valve body 1, avoids water flow to the upper part of the upper ring frame 301, the upper ring frame 301 presses the upper sealing rubber ring 307 and the main valve body 1 to complete the second sealing, avoids the gap between the upper and lower parts of the ball valve core 2 and the main valve body 1, the double sealing cooperation enhances the sealing effect of the ball valve core 2 when closed, enhances the sealing effect in the high temperature and high pressure state, ensures the reliable working performance of the valve in long time operation, reduces the maintenance cost and downtime;

[0035] The upper ring frame 301 moves downward to be close to the ball valve core 2 through the sliding of the inclined guide lugs 302 and the top inclined guide lugs 302 of the middle sealing ring frame 303, increases the sealing pressure of the lower annular rubber sealing block 305 and the side rubber sealing block 306 to the ball valve core 2, compensates the deformation of the sealing surface caused by the temperature change, the pressure can also compensate the wear of the lower annular rubber sealing block 305 and the side rubber sealing block 306, prolongs the service life of the lower annular rubber sealing block 305 and the side rubber sealing block 306, ensures the stability of the sealing effect of the lower annular rubber sealing block 305 and the side rubber sealing block 306, improves the wear resistance, corrosion resistance and sealing performance of the ball valve core 2 in the harsh working conditions, ensures the reliable working performance of the valve in long time operation, reduces the maintenance cost and downtime.

[0036] In this paper, the following points need attention:

[0037] 1.The accompanying drawings are only related to the structure involved in the embodiments of the present disclosure, and other structures can be referred to the general design.

[0038] 2.In the case of no conflict, the embodiments and features in the embodiments of the present disclosure can be combined to obtain new embodiments.

[0039] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A high temperature, high pressure, wear resistant ball valve, comprising: The utility model provides a high temperature and high pressure wear -resisting ball valve, including main valve body (1), ball valve core (2) and upper valve cover (3), its characterized in be provided with ball valve core (2) in the inside of main valve body (1), and the upper and lower flange disc of main valve body (1) is fixed with upper valve cover (3) with bolt cooperation, and the lower part of upper valve cover (3) is provided with upper ring frame (301), and the bottom of upper ring frame (301) is provided with inclined guide lug (302), and the below of upper ring frame (301) is provided with middle sealing ring frame (303), and both sides of middle sealing ring frame (303) are provided with side lug (304) with protruding, and the below of middle sealing ring frame (303) and side lug (304) is fixedly provided with lower annular rubber sealing block (305), side rubber sealing block (306), and the upper part of middle sealing ring frame (303) and side lug (304) is provided with upper sealing rubber ring (307) with outside side.

2. The high temperature and high pressure wear -resisting ball valve according to claim 1, wherein, The middle part of main valve body (1) is fixed with side connecting pipe (101) with bolt cooperation on both sides of flange disc, and the inner side of the head of side connecting pipe (101) is fixedly provided with first inner sealing ring (102), and the side close to ball valve core (2) of first inner sealing ring (102) is slidably provided with second sealing ring (103).

3. The high temperature and high pressure wear -resisting ball valve according to claim 2, wherein, The upper and lower of ball valve core (2) are fixedly provided with middle valve rod (201), and middle valve rod (201) and upper valve cover (3) are rotatably connected, and the outer side of ball valve core (2) and second sealing ring (103) keep close sealing.

4. The high temperature and high pressure wear -resisting ball valve according to claim 3, wherein, Middle sealing ring frame (303) and main valve body (1) are vertically slidably connected, and the bottom of lower annular rubber sealing block (305) and side rubber sealing block (306) keeps close to ball valve core (2).

5. The high temperature and high pressure wear -resisting ball valve according to claim 4, wherein, The center of upper ring frame (301) is fixedly connected with middle valve rod (201), and the lower part of upper sealing rubber ring (307) keeps close contact with main valve body (1).

6. The high temperature and high pressure wear -resisting ball valve according to claim 4, wherein, The top of middle sealing ring frame (303) is provided with inclined guide lug (302), and the inclined guide lug (302) of the bottom of upper ring frame (301) and the top inclined guide lug (302) of middle sealing ring frame (303) are slidably close.

7. The high temperature and high pressure wear -resisting ball valve according to claim 6, wherein, When upper ring frame (301) rotates to the closed state with middle valve rod (201), the inclined guide lug (302) of the bottom of upper ring frame (301) moves to the upper side of the top inclined guide lug (302) of middle sealing ring frame (303), and lower annular rubber sealing block (305) and side rubber sealing block (306) move to close ball valve core (2) to form sealing state.

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