Nuclear power stop valve capable of reducing friction

Abstract

The invention discloses a nuclear power stop valve capable of reducing friction, and relates to the technical field of stop valves. According to the nuclear power stop valve capable of reducing friction, through the design of a composite mechanism, the valve rod is rotated by the hand wheel to drive the valve clack to ascend, a gap is formed between the valve clack and the ring-shaped groove in the surface of the baffle so that liquid can flow conveniently, on the contrary, the valve clack and the ring-shaped groove are in butt joint, the effect of stopping fluid is achieved, and then the fluid flow can be controlled so that the working requirement can be met; the valve clack is in friction fit with the friction mechanism in the lifting process, so that the effect of cleaning components is achieved, impurities on the surfaces of the components are reduced, corrosion caused by too many impurities or the situation that the sealing effect is affected by too many impurities is prevented, protection mechanisms are arranged on the two sides of the valve body shell, and the protection mechanisms are placed on the inner sides of the pipelines on the two sides, so that friction force to the pipelines is enhanced; the sealing effect is improved, aging leakage of the two sides of equipment is prevented, friction of liquid to parts is reduced, equipment abrasion is reduced, and therefore the service life of the equipment is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of stop valves, in particular to a nuclear power stop valve capable of reducing friction. Background Art

[0002] The electric stop valve is a valve used in the pipeline system of nuclear power plants. Its main function is to cut off or conduct fluid media in the pipeline, such as coolant (usually water), steam, etc. When the pipeline system needs to be maintained, repaired, or the flow direction of the fluid needs to be changed, the stop valve can be closed to stop the flow of the medium, thereby achieving effective control of the fluid in the pipeline. The valve body of the nuclear power stop valve is generally made of cast steel or stainless steel. The cast steel valve body has good strength and toughness and can withstand the high-pressure environment in the pipeline system of the nuclear power plant; the stainless steel valve body has excellent corrosion resistance, especially when dealing with corrosive coolants or other media.

[0003] When the valve is closed, pressure must be applied to the valve disc to force the sealing surface to prevent leakage. The pipelines in nuclear power plants need to use stop valves. In the prior art, after the stop valve for nuclear power is opened, the internal seals are subjected to long-term erosion and friction from water flow, causing wear, resulting in an unsatisfactory sealing effect. Therefore, a new design was made to address this situation. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A nuclear power stop valve capable of reducing friction, comprising: A valve body mechanism, the valve body mechanism is used to intercept the liquid; A composite mechanism, the composite mechanism is used to clean the valve body mechanism; The interior of the valve body mechanism is fixedly connected to the exterior of the composite mechanism; Wherein, the valve body mechanism comprises a valve body shell, the outer side of the valve body shell is fixedly connected with a gasket, the inner side of the gasket is rotatably connected with a valve stem, the side of the valve stem outside the valve body shell away from the valve body shell is fixedly connected with a handwheel, the handwheel rotates the valve stem to drive the valve disc to rise, and a gap is generated with the ring-shaped groove on the surface of the baffle plate, so as to facilitate the flow of liquid, and the side of the valve stem outside the handwheel is fixedly connected with a valve disc, and conversely, the valve disc is docked with the ring-shaped groove, so as to achieve the effect of blocking the fluid, and secondly, the fluid flow rate can be controlled to meet the work needs, and the inner wall of the valve body shell is fixedly connected with a baffle, and the valve disc is frictionally adapted with the friction mechanism during the lifting process, so as to achieve clearing The function of the management component is to reduce impurities on the surface of the component, prevent excessive impurities from causing corrosion or excessive impurities from affecting the sealing effect. A ring-shaped groove is provided on the outside of the baffle, and a composite mechanism is fixedly connected to the side of the outside of the ring-shaped groove away from the valve disc, and a friction mechanism is fixedly connected to the side of the inner wall of the valve body shell close to the gasket. Both sides of the outside of the valve body shell are fixedly connected with protective mechanisms. Protective mechanisms are arranged on both sides of the valve body shell, and are placed on the inner sides of the pipes on both sides through the protective mechanisms, thereby enhancing the friction force on the pipes, improving the sealing effect, preventing aging leakage on both sides of the equipment, and at the same time slowing down the liquid flow rate on both sides, reducing the friction of the liquid on the components, reducing equipment wear, and thus extending the service life of the equipment.

[0005] Preferably, the friction mechanism includes an annular frame, and the valve disc rotates when the valve stem is controlled to lift, and rotates and rubs with the inner side of the annular frame, so as to achieve the effect of cleaning impurities on the surface of the component, reduce impurity adsorption, avoid excessive impurities causing reduced sealing, prevent liquid leakage, and reduce safety hazards. An annular groove is provided on the inner side of the annular frame. By providing the annular groove, the contact area is increased by grooving, the cleaning effect is improved, and the chip removal effect is enhanced at the same time, the impurities during friction are reduced, and liquid flushing is facilitated, which has a certain self-cleaning effect. The outer side of the annular frame is fixedly connected with a first connecting block, and a telescopic rod is fixedly connected to one side of the outer side of the first connecting block. A second connecting block is fixedly connected to the outer side of the telescopic rod away from the first connecting block, and the outer side of the second connecting block is fixedly connected to the inner wall of the valve body shell. A spring bar is sleeved on one side of the outer side of the telescopic rod close to the second connecting block, and when the valve disc rises, it impacts the annular frame, causing the spring bar to be squeezed, so as to achieve the effect of shock absorption and buffering, reduce the impact amplitude of the component, and play a certain protective role on the component.

[0006] Preferably, the protection mechanism includes a protection frame, which is wide at one end and narrow at the other end. The liquid enters from the narrower side, so as to limit the liquid flow rate and reduce the liquid flow rate, thereby reducing the liquid scouring force, reducing component wear, and extending the service life of the equipment. A rubber ring is fixedly connected to the side of the outside of the protection frame close to the valve body shell. The rubber ring is made of plastic material, which increases the friction between the component and the pipeline and enhances the leak-proof effect.

[0007] Preferably, an external block is fixedly connected to the side of the outside of the protective frame away from the rubber ring. When the protective frame is placed on the inner wall of the pipe, the external block rubs against the inner wall of the pipe, thereby increasing the friction between the equipment and the pipe and improving the stability of the equipment. A block surface cutout is provided on the side of the external block away from the protective frame. By providing the block surface cutout and increasing the contact area through grooving, a certain anti-slip effect is achieved, thereby improving the stability of the component when impacted by liquid.

[0008] Preferably, a frame groove is provided on the inner side of the protective frame, and a chamber structure is adopted on the narrower side of the frame groove, thereby increasing the liquid flow stroke, reducing the liquid speed, reducing the erosion and wear of components, and reducing the pipe diameter on the side close to the valve body shell. According to the Bernoulli principle, the liquid flow rate is increased by compressing the pipe diameter while reducing the cross-sectional area. A curved notch is provided on the inner wall of the frame groove on the side close to the valve body shell. When the liquid passes through the curved notch, the flow port is increased by the notch, thereby achieving the effect of diversion.

[0009] Preferably, the composite structure includes a ring-shaped frame, the top of the ring-shaped frame is fixedly connected to the outer side of the ring-shaped groove, the side of the ring-shaped frame away from the ring-shaped groove is fixedly connected with a connecting plate, the middle of the connecting plate away from the side of the ring-shaped frame is fixedly connected with a first filter cover, the first filter cover and the second filter cover play a role in filtering larger impurities to avoid clogging the ring-shaped groove by impurities and preventing liquid flow from being affected, the side of the connecting plate close to the first filter cover is fixedly connected with the second filter cover, and the first filter cover and the second filter cover adopt a drop design to increase the internal space, reduce the probability of internal clogging, and improve the flow effect of the liquid, the inner side of the second filter cover is fixedly connected with a rotating mechanism, and the inner side of the ring-shaped frame is fixedly connected with a cleaning mechanism.

[0010] Preferably, the rotating mechanism includes a rotating base, the bottom of the rotating base is fixedly connected to the inner side of the second filter cover, the top of the rotating base is rotatably connected to a rotating block, and the outer side of the rotating block is fixedly connected to a connecting bracket, and the impact force generated by the liquid flow drives the connecting bracket to rotate, so that the semi-arc plate rotates and rubs the component, so as to clean impurities on the surface of the component and reduce impurity accumulation, thereby extending the service life of the equipment and maintaining the flow effect of the component, and a semi-arc plate is fixedly connected to one side of the outside of the connecting bracket, and a plate surface groove is opened on the side of the semi-arc plate away from the connecting bracket, and the chip removal effect is increased by opening the plate surface groove and the notch, and the adsorption of impurities is reduced to avoid affecting the subsequent friction effect.

[0011] Preferably, a connecting block is fixedly connected to the side of the outside of the connecting bracket away from the semi-arc plate, and the connecting block supports the corrugated plate. The connecting block is fixedly connected to the side of the connecting bracket away from the connecting bracket. The corrugated plate adopts a curved structure, which increases the contact area with the fluid and the liquid through the curved structure, thereby driving the rotation efficiency of the components.

[0012] Preferably, the cleaning mechanism includes a fixed frame, the outer side of the fixed frame is fixedly connected to the inner side of the ring-shaped frame body, the fixed frame is rotatably connected to a rotating shaft on a side away from the first filter cover, and the outer side of the rotating shaft is fixedly connected to a connecting plate, and the connecting plate is driven to rotate by liquid impact, so that the arc-shaped sheet rotates on the side close to the ring-shaped groove, so as to achieve the effect of cleaning lumps and avoid the accumulation of impurities that affect the flow effect after the valve body has been in operation for a long time. The outer side of the connecting plate is fixedly connected to an arc-shaped sheet, and the lumps are broken by rotating the arc-shaped sheet to ensure the normal operation of the equipment.

[0013] Preferably, a friction plate is fixedly connected to the side of the connecting plate away from the rotating shaft. The connecting plate drives the friction plate to rotate, so that the friction plate rubs against the inner wall of the component, thereby cleaning impurities and slowing down the accumulation of impurities, thereby extending the utilization rate of the equipment. A plate surface incision is opened on the side of the friction plate away from the arc-shaped piece. The plate surface incision is opened and the friction performance is increased by grooving, thereby improving the cleaning efficiency.

[0014] The present invention provides a nuclear power stop valve capable of reducing friction, which has the following beneficial effects: 1. The nuclear power stop valve that can reduce friction has a composite mechanism design. The hand wheel rotates the valve stem to drive the valve disc to rise, and a gap is generated with the ring groove on the surface of the baffle to facilitate the flow of liquid. Conversely, the valve disc is docked with the ring groove to achieve the effect of blocking the fluid. Secondly, the fluid flow rate can be controlled to meet the needs of work. During the lifting process of the valve disc, the friction adaptation with the friction mechanism is carried out to achieve the effect of cleaning components, reducing impurities on the surface of components, preventing corrosion caused by excessive impurities or affecting the sealing effect by excessive impurities. Protective mechanisms are arranged on both sides of the valve body shell, and the protective mechanisms are placed on the inner side of the pipes on both sides, thereby enhancing the friction force on the pipes, improving the sealing effect, preventing aging and leakage on both sides of the equipment, and at the same time slowing down the liquid flow rate on both sides, reducing the friction of the liquid on the components, reducing equipment wear, and thus extending the service life of the equipment.

[0015] 2. The friction-reducing nuclear power stop valve is designed with a protective mechanism. The protective frame is wide at one end and narrow at the other end. The liquid enters from the narrower side, so as to limit the liquid flow rate and reduce the liquid flow rate, thereby reducing the liquid scouring force, reducing the wear of components, and extending the service life of the equipment. The rubber ring is made of plastic material to increase the friction between the components and the pipeline and enhance the anti-leakage effect. When the protective frame is placed on the inner wall of the pipeline, the external block rubs against the inner wall of the pipeline to increase the friction between the equipment and the pipeline and improve the stability of the equipment. By opening the block surface incision and increasing the contact area by grooving, a certain anti-slip effect is achieved, and the stability of the components when impacted by liquid is improved. The narrower side of the frame groove adopts a chamber structure, thereby increasing the liquid flow stroke, reducing the liquid speed, and reducing the scouring wear of components. The pipeline diameter is reduced on the side close to the valve body shell. According to the Bernoulli principle, the liquid flow rate is increased by compressing the pipeline diameter, while the cross-sectional area is reduced. When the liquid passes through the curved notch, the flow port is increased by grooving to achieve the effect of diversion.

[0016] 3. The nuclear power stop valve that can reduce friction has a composite structure design. The first filter cover and the second filter cover filter out larger impurities to avoid clogging the ring groove with impurities and prevent the flow of liquid from being affected. At the same time, the first filter cover and the second filter cover adopt a drop design to increase the internal space, reduce the probability of internal clogging, and improve the flow effect of the liquid. The impact force generated by the liquid flow drives the connecting bracket to rotate, so that the semi-arc plate rotates and rubs the component, so as to clean the impurities on the surface of the component and reduce the accumulation of impurities, thereby extending the service life of the equipment and maintaining the flow effect of the component. By opening grooves on the plate surface and openings, the chip removal effect is increased, the adsorption of impurities is reduced, and the subsequent friction effect is avoided.

[0017] Fourth, the nuclear power stop valve that can reduce friction is designed with a rotating mechanism. The impact force generated by the liquid flow drives the connecting bracket to rotate, so that the semi-arc plate rotates and rubs the component, so as to clean the impurities on the surface of the component and reduce the accumulation of impurities, thereby extending the service life of the equipment and maintaining the flow effect of the component. By opening grooves on the plate surface and notches, the chip removal effect is increased, the adsorption of impurities is reduced, and the subsequent friction effect is avoided. The connecting block supports the corrugated plate. The corrugated plate adopts a curved structure. The curved structure increases the contact area with the fluid and the contact area with the liquid, thereby driving the rotation efficiency of the component.

[0018] 5. The nuclear power stop valve that can reduce friction is designed with a cleaning mechanism. The liquid impact drives the connecting plate to rotate, so that the arc-shaped piece rotates on the side close to the ring groove, so as to achieve the effect of cleaning lumps and avoid the accumulation of impurities that affect the flow effect after the valve body has been in operation for a long time. The lumps are broken by rotating the arc-shaped piece to ensure the normal operation of the equipment. The connecting plate drives the friction plate to rotate, so that the friction plate rubs against the inner wall of the component, so as to achieve the effect of cleaning impurities and slow down the accumulation of impurities, thereby extending the use rate of the equipment. The plate surface is cut and the friction performance is increased by grooving to improve the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of the external structure of the nuclear power stop valve capable of reducing friction according to the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of a nuclear power stop valve of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the valve body mechanism of the present invention; Figure 4 It is a schematic diagram of the friction mechanism structure of the present invention; Figure 5 It is a schematic diagram of the structure of the protection mechanism of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the protection mechanism of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the composite mechanism of the present invention; Figure 8 It is a schematic diagram of the structure of the rotating mechanism of the present invention; Fig. 9 It is a schematic diagram of the cleaning mechanism structure of the present invention.

[0020] In the figure: 1, valve body mechanism; 2, composite mechanism; 11, valve body shell; 12, gasket; 13, valve stem; 14, hand wheel; 15, valve disc; 16, baffle; 17, ring groove; 18, friction mechanism; 19, protection mechanism; 181, annular frame; 182, annular groove; 183, first connecting block; 184, telescopic rod; 185, spring bar; 186, second connecting block; 191, protection frame; 192, rubber ring; 193, external block; 194, block surface cut; 195, Frame groove; 196, curved notch; 21, ring-shaped frame; 22, connecting plate; 23, first filter cover; 24, second filter cover; 25, rotating mechanism; 26, cleaning mechanism; 251, rotating base; 252, rotating block; 253, connecting bracket; 254, connecting block; 255, corrugated plate; 256, semi-arc plate; 257, plate surface groove; 261, fixed frame; 262, rotating shaft; 263, connecting plate; 264, arc-shaped sheet; 265, friction plate; 266, plate surface incision. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0022] The first embodiment, as Figures 1 to 3 As shown, the present invention provides a technical solution: a nuclear power shut-off valve capable of reducing friction, comprising a valve body mechanism 1, wherein the valve body mechanism 1 is used to intercept liquid; The composite mechanism 2 is used to clean the valve body mechanism 1; The interior of the valve body mechanism 1 is fixedly connected to the exterior of the composite mechanism 2; Among them, the valve body mechanism 1 includes a valve body shell 11, a gasket 12 is fixedly connected to the outer side of the valve body shell 11, a valve stem 13 is rotatably connected to the inner side of the gasket 12, a handwheel 14 is fixedly connected to the side of the valve stem 13 away from the valve body shell 11, a valve disc 15 is fixedly connected to the side of the valve stem 13 away from the handwheel 14, a baffle 16 is fixedly connected to the inner wall of the valve body shell 11, a ring-shaped groove 17 is provided on the outer side of the baffle 16, a composite mechanism 2 is fixedly connected to the side of the ring-shaped groove 17 away from the valve disc 15, a friction mechanism 18 is fixedly connected to the side of the inner wall of the valve body shell 11 close to the gasket 12, and protective mechanisms 19 are fixedly connected to both sides of the outside of the valve body shell 11. The handwheel 14 rotates the valve stem 13 to drive the valve disc 15 to rise, creating a gap with the ring groove 17 on the surface of the baffle 16 to facilitate the flow of liquid. Conversely, the valve disc 15 is docked with the ring groove 17 to achieve the effect of blocking the fluid. Secondly, the fluid flow rate can be controlled to meet the needs of work. During the lifting process, the valve disc 15 is frictionally adapted with the friction mechanism 18 to achieve the effect of cleaning components, reducing impurities on the surface of components, preventing corrosion caused by excessive impurities or excessive impurities affecting the sealing effect. Protective mechanisms 19 are set on both sides of the valve body shell 11. The protective mechanisms 19 are placed on the inner side of the pipes on both sides to enhance the friction force on the pipes, improve the sealing effect, prevent aging and leakage on both sides of the equipment, and at the same time slow down the liquid flow rate on both sides, reduce the friction of the liquid on the components, reduce equipment wear, and extend the service life of the equipment.

[0023] The second embodiment is based on the first embodiment. Figures 4 to 6As shown, the friction mechanism 18 includes an annular frame body 181, an annular groove 182 is opened on the inner side of the annular frame body 181, a first connecting block 183 is fixedly connected to the outer side of the annular frame body 181, a telescopic rod 184 is fixedly connected to the outer side of the first connecting block 183, a second connecting block 186 is fixedly connected to the outer side of the telescopic rod 184 away from the first connecting block 183, the outer side of the second connecting block 186 is fixedly connected to the inner wall of the valve body shell 11, and a spring strip 185 is sleeved on the outer side of the telescopic rod 184 close to the second connecting block 186. The valve flap 15 rotates when the valve stem 13 is controlled to be lifted, and rotates and rubs against the inner side of the annular frame 181, so as to clean impurities on the surface of the components, reduce impurity adsorption, avoid reduced sealing due to excessive impurities, prevent liquid leakage, and reduce safety hazards. By providing an annular groove 182, the contact area is increased by grooving, the cleaning effect is improved, and the chip removal effect is enhanced. Impurities during friction are reduced, which facilitates liquid flushing and has a certain self-cleaning effect. When the valve flap 15 rises, it hits the annular frame 181, causing the spring bar 185 to be squeezed, so as to achieve a shock-absorbing and buffering effect, reduce the impact amplitude of the components, and have a certain protective effect on the components.

[0024] The protection mechanism 19 includes a protection frame 191, and a rubber ring 192 is fixedly connected to one side of the protection frame 191 near the valve body housing 11. The protection frame 191 is wide at one end and narrow at the other end, and the liquid enters from the narrower side, thereby limiting the liquid flow rate and reducing the liquid flow rate, thereby reducing the liquid flushing force, reducing component wear, and extending the service life of the equipment. The rubber ring 192 is made of plastic material to increase the friction between the component and the pipeline and enhance the leak-proof effect.

[0025] An external block 193 is fixedly connected to the side of the protection frame 191 away from the rubber ring 192, and a block surface cutout 194 is provided on the side of the external block 193 away from the protection frame 191. When the protection frame 191 is placed on the inner wall of the pipeline, the external block 193 rubs against the inner wall of the pipeline, thereby increasing the friction between the device and the pipeline and improving the stability of the device. By providing the block surface cutout 194 and increasing the contact area through the groove, a certain anti-slip effect is achieved, and the stability of the components when impacted by liquid is improved.

[0026] A frame groove 195 is provided on the inner side of the protection frame 191, and a curved notch 196 is provided on the inner wall of the frame groove 195 close to the valve body shell 11. The narrower side of the frame groove 195 adopts a chamber structure, thereby increasing the liquid flow stroke, reducing the liquid speed, and reducing the erosion and wear of the components. The side close to the valve body shell 11 reduces the pipe diameter. According to the Bernoulli principle, by compressing the pipe diameter, the liquid flow rate is increased, and the cross-sectional area is reduced. When the liquid passes through the curved notch 196, the flow port is increased by the groove, thereby achieving the effect of diversion.

[0027] The third embodiment is based on the first and second embodiments. Figures 7 to 9 As shown, the composite mechanism 2 includes a ring-shaped frame 21, the top of the ring-shaped frame 21 is fixedly connected to the outer side of the ring-shaped groove 17, a connecting plate 22 is fixedly connected to the side of the ring-shaped frame 21 away from the ring-shaped groove 17, a first filter cover 23 is fixedly connected to the middle of the connecting plate 22 away from the side of the ring-shaped frame 21, a second filter cover 24 is fixedly connected to the side of the connecting plate 22 close to the first filter cover 23, a rotating mechanism 25 is fixedly connected to the inner side of the second filter cover 24, and a cleaning mechanism 26 is fixedly connected to the inner side of the ring-shaped frame 21. The first filter cover 23 and the second filter cover 24 play a role in filtering larger impurities, avoiding impurities from clogging the ring-shaped groove 17 and preventing the flow of liquid from being affected. At the same time, the first filter cover 23 and the second filter cover 24 adopt a drop design to increase the internal space, reduce the probability of internal clogging, and improve the flow effect of liquid.

[0028] The rotating mechanism 25 includes a rotating base 251, the bottom of the rotating base 251 is fixedly connected to the inner side of the second filter cover 24, the top of the rotating base 251 is rotatably connected to a rotating block 252, the outer side of the rotating block 252 is fixedly connected to a connecting bracket 253, a semi-arc plate 256 is fixedly connected to one side of the outer side of the connecting bracket 253, and a plate surface groove 257 is provided on the side of the semi-arc plate 256 away from the connecting bracket 253. The impulse generated by the flow of liquid drives the connecting bracket 253 to rotate, so that the semi-arc plate 256 performs rotational friction on the component, thereby cleaning the impurities on the surface of the component and reducing the accumulation of impurities, thereby extending the service life of the equipment and maintaining the flow effect of the component, and increasing the chip removal effect by providing the plate surface groove 257 and the notch, reducing the adsorption of impurities, and avoiding affecting the subsequent friction effect.

[0029] A connecting block 254 is fixedly connected to the side of the connecting bracket 253 away from the semi-arc plate 256, and a corrugated plate 255 is fixedly connected to the side of the connecting block 254 away from the connecting bracket 253. The connecting block 254 supports the corrugated plate 255, and the corrugated plate 255 adopts a curved structure, which increases the contact area with the fluid and the liquid, thereby driving the rotation efficiency of the components.

[0030] The cleaning mechanism 26 comprises a fixing frame 261, the outer side of the fixing frame 261 is fixedly connected to the inner side of the ring-shaped frame body 21, the fixing frame 261 is rotatably connected to a rotating shaft 262 on a side away from the first filter cover 23, a connecting plate 263 is fixedly connected to the outer side of the rotating shaft 262, and an arc-shaped piece 264 is fixedly connected to the outer side of the connecting plate 263. The connecting plate 263 is driven to rotate by liquid impact, so that the arc-shaped piece 264 rotates on the side close to the ring-shaped groove 17, so as to achieve the effect of cleaning the agglomeration, avoid the accumulation of impurities agglomeration and affect the flow effect after the valve body is operated for a long time, and the agglomeration is broken by rotating the arc-shaped piece 264 to ensure the normal operation of the equipment.

[0031] A friction plate 265 is fixedly connected to the side of the connecting plate 263 away from the rotating shaft 262, and a plate surface cutout 266 is provided on the side of the friction plate 265 away from the arc-shaped sheet 264. The connecting plate 263 drives the friction plate 265 to rotate, so that the friction plate 265 rubs against the inner wall of the component, thereby cleaning impurities and slowing down the accumulation of impurities, thereby extending the use rate of the equipment. The plate surface cutout 266 is provided to increase the friction performance and improve the cleaning efficiency by grooving.

[0032] When in use, the composite mechanism 2 is arranged inside the valve body mechanism 1, and the valve body mechanism 1 is used to control the fluid flow and block the liquid flow, thereby playing a role in cutting off the leakage point. The valve flap 15 is controlled to rise and fall by rotating the hand wheel 14 inside the composite mechanism 2, so as to achieve the function of controlling the liquid flow and controlling the fluid flow. In the process of the valve flap 15 rising and falling, it is friction-adapted with the friction mechanism 18, and the valve flap 15 is cleaned by the friction mechanism 18 to reduce impurities on the surface of the valve flap 15, prevent excessive impurities from causing corrosion of components or accumulation of impurities to affect the sealing effect, and extend the service life of the equipment. Protective mechanisms 19 are arranged on both sides of the valve body shell 11. The protective mechanism 19 improves the sealing performance of the docking with the pipelines on both sides to prevent leakage on both sides after long-term operation. Secondly, the protective mechanism 19 slows down the liquid flow rate, reduces the impact force of the liquid, reduces the wear on the components, and extends the service life of the equipment.

[0033] The composite mechanism 2 is arranged on one side of the ring-shaped groove 17 inside the valve body mechanism 1. The composite mechanism 2 reduces the accumulation of impurities near the ring-shaped groove 17 to avoid blockage and prevent the flow effect inside the valve body from being affected. A cleaning mechanism 26 is arranged inside the composite mechanism 2. The cleaning mechanism 26 rotates the inside of the ring-shaped groove 17, so that the kinetic energy generated by the impact of the liquid drives the cleaning mechanism 26 to rub, reduce the accumulation of impurities, clean the inside of the equipment, extend the service life of the equipment, and ensure the normal operation of the equipment.

[0034] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A nuclear power stop valve capable of reducing friction, characterized in that: include: A valve body mechanism (1), the valve body mechanism (1) being used to intercept liquid; A composite mechanism (2), the composite mechanism (2) being used to clean the valve body mechanism (1); The interior of the valve body mechanism (1) is fixedly connected to the exterior of the composite mechanism (2); The valve body mechanism (1) comprises a valve body shell (11), a gasket (12) is fixedly connected to the outer side of the valve body shell (11), a valve stem (13) is rotatably connected to the inner side of the gasket (12), a hand wheel (14) is fixedly connected to the outer side of the valve stem (13) away from the valve body shell (11), a valve flap (15) is fixedly connected to the outer side of the valve stem (13) away from the hand wheel (14), a baffle (16) is fixedly connected to the inner wall of the valve body shell (11), a ring-shaped groove (17) is formed on the outer side of the baffle (16), a composite mechanism (2) is fixedly connected to the outer side of the ring-shaped groove (17) away from the valve flap (15), a friction mechanism (18) is fixedly connected to the inner wall of the valve body shell (11) close to the gasket (12), and protective mechanisms (19) are fixedly connected to both sides of the outer side of the valve body shell (11).

2. A friction-reducing nuclear power shut-off valve according to claim 1, characterized in that: The friction mechanism (18) comprises an annular frame (181), an annular groove (182) is provided on the inner side of the annular frame (181), a first connecting block (183) is fixedly connected to the outer side of the annular frame (181), a telescopic rod (184) is fixedly connected to the outer side of the first connecting block (183), a second connecting block (186) is fixedly connected to the outer side of the telescopic rod (184) away from the first connecting block (183), the outer side of the second connecting block (186) is fixedly connected to the inner wall of the valve body shell (11), and a spring strip (185) is sleeved on the outer side of the telescopic rod (184) close to the second connecting block (186).

3. A friction-reducing nuclear power shut-off valve according to claim 1, characterized in that: The protection mechanism (19) comprises a protection frame (191), and a rubber ring (192) is fixedly connected to a side of the outside of the protection frame (191) close to the valve body shell (11).

4. A friction-reducing nuclear power shut-off valve according to claim 3, characterized in that: An external block (193) is fixedly connected to the side of the protection frame (191) away from the rubber ring (192), and a block surface cutout (194) is provided on the side of the external block (193) away from the protection frame (191).

5. A friction-reducing nuclear power shut-off valve according to claim 4, characterized in that: A frame groove (195) is provided on the inner side of the protection frame (191), and a curved notch (196) is provided on the inner wall of the frame groove (195) on a side close to the valve body shell (11).

6. A friction-reducing nuclear power shut-off valve according to claim 1, characterized in that: The composite mechanism (2) comprises a ring-shaped frame (21), the top of the ring-shaped frame (21) being fixedly connected to the outer side of the ring-shaped groove (17), a connecting plate (22) being fixedly connected to the side of the ring-shaped frame (21) away from the ring-shaped groove (17), a first filter cover (23) being fixedly connected to the middle of the side of the connecting plate (22) away from the ring-shaped frame (21), a second filter cover (24) being fixedly connected to the side of the connecting plate (22) close to the first filter cover (23), a rotating mechanism (25) being fixedly connected to the inner side of the second filter cover (24), and a cleaning mechanism (26) being fixedly connected to the inner side of the ring-shaped frame (21).

7. A friction-reducing nuclear power shut-off valve according to claim 6, characterized in that: The rotating mechanism (25) comprises a rotating base (251), the bottom of the rotating base (251) is fixedly connected to the inner side of the second filter cover (24), the top of the rotating base (251) is rotatably connected to a rotating block (252), the outer side of the rotating block (252) is fixedly connected to a connecting bracket (253), a semi-arc plate (256) is fixedly connected to one side of the outer side of the connecting bracket (253), and a plate surface groove (257) is provided on a side of the semi-arc plate (256) away from the connecting bracket (253).

8. A friction-reducing nuclear power shut-off valve according to claim 7, characterized in that: A connecting block (254) is fixedly connected to the side of the outside of the connecting bracket (253) away from the semi-arc plate (256), and a corrugated plate (255) is fixedly connected to the side of the connecting block (254) away from the connecting bracket (253).

9. A friction-reducing nuclear power shut-off valve according to claim 6, characterized in that: The cleaning mechanism (26) comprises a fixing frame (261), the outer side of the fixing frame (261) being fixedly connected to the inner side of the ring-shaped frame body (21), a side of the fixing frame (261) away from the first filter cover (23) being rotatably connected to a rotating shaft (262), the outer side of the rotating shaft (262) being fixedly connected to a connecting plate (263), and the outer side of the connecting plate (263) being fixedly connected to an arc-shaped sheet (264).

10. A friction-reducing nuclear power shut-off valve according to claim 9, characterized in that: A friction plate (265) is fixedly connected to the side of the connection plate (263) away from the rotating shaft (262), and a plate surface cutout (266) is provided on the side of the friction plate (265) away from the arc-shaped sheet (264).

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