Ball valve inner leakage detection device based on pressure sensor

Abstract

The embodiment of the invention provides a ball valve inner leakage detection device based on a pressure sensor, and relates to the technical field of ball valve detection. The ball valve inner leakage detection device based on the pressure sensors comprises a ball valve body, a first pressure sensor, a second pressure sensor and an automatic plugging assembly. A flow guide transverse groove is formed in the outer protruding block, and a liquid inlet groove hole and a liquid outlet groove hole which communicate with the interior of the ball valve body are formed in the two ends of the flow guide transverse groove correspondingly. Threaded holes are formed in the tops of the outer protruding blocks, through holes communicating with the threaded holes are formed in the inner walls of the flow guide transverse grooves, and mounting groove holes opposite to the through holes are formed in the other sides of the flow guide transverse grooves. The seat block is arranged at the top of the spring, a plugging block matched with the through hole in an inserted mode is arranged on the side, away from the spring, of the seat block, and the top end of the section shell is matched with the lower threaded section in a threaded mode. According to the ball valve inner leakage detection device, in the ball valve operation process, detection can be achieved, and the pressure sensor on the ball valve can be conveniently replaced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of ball valve detection, in particular to a ball valve internal leakage detection device based on a pressure sensor. BACKGROUND

[0002] Ball valve internal leakage refers to the phenomenon that, under the condition of complete closure, due to damage of a valve seat sealing surface, ball wear, foreign matter jamming or insufficient torque of an actuator, medium can still leak from a high-pressure side to a low-pressure side through the valve. This is a kind of "invisible danger" because it is usually not perceived from the outside.

[0003] The commonly used ball valve detection device mainly installs two groups of pressure sensors on the connecting pipes attached to the two ports of the ball valve. If the pressure sensor on the connecting pipe is damaged, another valve corresponding to the front end of the connecting pipe needs to be closed to replace the damaged pressure sensor. Not only is the disassembly and assembly process complicated, but oil also leaks from the installation hole during the replacement process. SUMMARY

[0004] The application aims to solve at least one of the technical problems existing in the prior art. To this end, the application provides a ball valve internal leakage detection device based on a pressure sensor to solve the problem that the disassembly and assembly process is complicated when the pressure sensor is damaged and replaced, and oil leaks from the installation hole during the replacement process.

[0005] According to the ball valve internal leakage detection device based on the pressure sensor provided by the application, the ball valve body, the first pressure sensor, the second pressure sensor and the automatic plugging assembly are included.

[0006] The ball valve body is provided with a liquid inlet end pipe and a liquid outlet end pipe at both ends, and an integral outer protrusion is arranged outside the liquid inlet end pipe and the liquid outlet end pipe. A flow guide transverse groove is arranged inside the outer protrusion, and a liquid inlet groove hole and a liquid outlet groove hole are arranged at both ends of the flow guide transverse groove and are in communication with the inside of the ball valve body. A threaded hole is arranged at the top of the outer protrusion, a through hole in communication with the threaded hole is arranged on the inner wall of the flow guide transverse groove, and a mounting groove hole opposite to the through hole is arranged on the other side of the flow guide transverse groove. The first pressure sensor and the second pressure sensor are provided with an upper threaded segment matched with the threaded hole in screw connection, and a lower threaded segment is arranged at the outer circle of the tail end of the second pressure sensor and the first pressure sensor. The automatic plugging assembly includes a segment shell, a seat block, a plugging block and a spring. The spring is installed inside the mounting groove hole, the seat block is arranged at the top of the spring, and the plugging block matched with the through hole is arranged on the side of the seat block away from the spring. The segment shell is matched and installed with the lower threaded segment in screw connection at the top end, and a through opening is arranged on the side of the segment shell.

[0007] The ball valve internal leakage detection device based on pressure sensors also includes a control connection part, which is installed on the outside of the ball valve body and connected to the first pressure sensor and the second pressure sensor.

[0008] In some embodiments of this application, the control connection portion includes a mounting box, a control module, wires, and connectors. The mounting box is fixed to the outside of the ball valve body, the control module is installed inside the mounting box, one end of each of the two wires is connected to a first pressure sensor and a second pressure sensor, and the other end of each wire is provided with a detachable connector to the control module.

[0009] In some embodiments of this application, the mounting box includes an outer protective shell and a side cover plate. The outer protective shell is fixed to the outside of the ball valve body, and the side cover plate is detachably disposed from the outer protective shell.

[0010] In some embodiments of this application, the outer casing has a wire hole on its side, and a sealing ring is provided inside the wire hole.

[0011] In some embodiments of this application, the outer shell and the side cover are provided with bolt holes, and the outer shell and the side cover are fixed together by bolts.

[0012] In some embodiments of this application, the automatic sealing assembly further includes a sealing ring, and the lower threaded section passes through the sealing ring.

[0013] In some embodiments of this application, an expansion port is provided at the bottom end of the liquid outlet channel.

[0014] In some embodiments of this application, a guide strip is provided on the side of the seat block, and a guide groove is provided on the inner wall of the mounting slot to slide and cooperate with the guide strip.

[0015] In some embodiments of this application, the inner diameter of the through hole is smaller than that of the threaded hole, and the diameter of the segment shell is smaller than that of the inner diameter of the through hole.

[0016] The ball valve internal leakage detection device based on pressure sensor also includes a flow guiding self-cleaning assembly. Two sets of the flow guiding self-cleaning assemblies are respectively installed on the front side of the inlet groove hole on the inner wall of the inlet end pipe and the outlet end pipe. The flow guiding self-cleaning assembly includes a flow guiding block, a sieve plate and a shaft. A front flow guiding groove is provided on the front side of the flow guiding block, and a rear flow guiding groove connected to the front flow guiding groove is provided on the back of the flow guiding block. The inner diameter of the rear flow guiding groove gradually decreases from the front flow guiding groove to the rear. The front end of the front flow guiding groove is diffused. The shaft is fixed to one side of the sieve plate. A shaft hole that rotates and engages with the shaft is provided inside the rear flow guiding groove. The sieve plate is rotatably locked inside the rear flow guiding groove. A limiting protrusion is provided at the end of the sieve plate. Several filter holes inclined towards the end of the inlet groove hole are provided on the side of the sieve plate.

[0017] The ball valve internal leakage detection device based on a pressure sensor also includes a turbulence prevention and anti-clogging component. The turbulence prevention and anti-clogging component includes a fixed rod, a rotating shaft, a spiral blade, a hollow frustum-shaped guide sleeve, and blades. The bottom end of the fixed rod is fixedly connected to the bottom wall of the opening inside the section shell. One end of the rotating shaft is rotatably connected to the top end of the fixed rod. The spiral blade is fixedly sleeved on the outside of the rotating shaft, and the outer diameter of the spiral blade gradually decreases. The guide sleeve is fixedly sleeved on the outside of the spiral blade. Multiple sets of blades are arranged in a ring array on the outside of the guide sleeve. The outer edges of the front end of the guide sleeve are recessed areas on both sides.

[0018] The beneficial effects of this application are as follows: The ball valve internal leakage detection device based on pressure sensors, obtained through the above design, allows for easy replacement of the first and second pressure sensors during disassembly by rotating them out of the threaded hole. This is achieved by rotating the first and second pressure sensors out of the threaded hole, causing the end housings of both sensors to move and be carried out together. A spring relaxes, pushing the sealing block at the end of the seat block outwards until it enters the through hole. The sealing block then enters the through hole to complete the sealing, preventing oil leakage. New first and second pressure sensors, along with the bottom-mounted end housings, are then inserted into the threaded hole, with the end housings protruding into the guide groove. Throughout this process, even during ball valve operation, the first and second pressure sensors can be easily replaced.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the internal leakage detection device for a ball valve based on a pressure sensor according to an embodiment of this application; Figure 2 This is a schematic diagram of the control connection portion without a side cover, the first pressure sensor, and the second pressure sensor according to an embodiment of this application. Figure 3 This is a schematic diagram of the structure of the inlet pipe, the first pressure sensor, the automatic sealing assembly, and the flow guiding self-cleaning assembly according to an embodiment of this application. Figure 4 This is a schematic diagram of the internal structure of the inlet pipe, the first pressure sensor, the automatic sealing assembly, and the turbulence-preventing assembly according to an embodiment of this application. Figure 5 This is a schematic diagram of the cross-sectional structure of the internal and external protrusions of the inlet pipe according to an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a first pressure sensor according to an embodiment of this application; Figure 7 This is a schematic diagram of the automatic sealing component structure according to an embodiment of this application; Figure 8 This is a schematic diagram of the self-cleaning component structure according to an embodiment of this application; Figure 9 This is a schematic diagram of the flow guide block structure according to an embodiment of this application; Figure 10 This is a schematic diagram of the sieve plate, shaft and limiting protrusion structure according to an embodiment of this application; Figure 11 This is a schematic diagram of the turbulence prevention and anti-blocking component structure according to an embodiment of this application; Figure 12 This is a schematic diagram of the fixed rod, rotating shaft, and spiral blade structure according to an embodiment of this application.

[0022] icon: 10-Ball valve body; 110-Inlet pipe; 120-Outlet pipe; 130-External protrusion; 140-Threaded hole; 150-Through hole; 160-Guide groove; 170-Inlet slot hole; 180-Outlet slot hole; 181-Expansion port; 190-Mounting slot hole; 191-Guide groove; 210-First pressure sensor; 220-Second pressure sensor; 230-Upper threaded section; 240-Lower threaded section; 30-Control connection part; 310-Outer housing; 320-Side cover plate; 330-Control module; 340-Wire; 350-Connector; 360-Seal 40 - Automatic sealing assembly; 410 - Section shell; 420 - Through port; 430 - Seat block; 440 - Sealing block; 450 - Spring; 460 - Guide strip; 470 - Sealing ring; 50 - Flow guiding self-cleaning assembly; 510 - Flow guiding block; 520 - Screening plate; 530 - Shaft; 540 - Filter hole; 550 - Limiting protrusion; 560 - Rear flow guide groove; 570 - Shaft hole; 580 - Front flow guide groove; 60 - Turbulence anti-clogging assembly; 610 - Fixing rod; 620 - Rotating shaft; 630 - Spiral blade; 640 - Flow guide sleeve; 650 - Blade; 660 - Recessed area. Detailed Implementation

[0023] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0026] The following description, with reference to the accompanying drawings, describes an embodiment of a ball valve internal leakage detection device based on a pressure sensor, according to an embodiment of this application.

[0027] Please see Figures 1-7 According to an embodiment of this application, a ball valve internal leakage detection device based on a pressure sensor includes: a ball valve body 10, a first pressure sensor 210, a second pressure sensor 220, and an automatic sealing component 40.

[0028] The first pressure sensor 210 and the second pressure sensor 220 are installed at both ends of the ball valve body 10 to monitor the pressure at both ends of the ball valve body 10. The automatic sealing assembly 40 allows for convenient and quick replacement of either the first pressure sensor 210 or the second pressure sensor 220.

[0029] The ball valve body 10 has an inlet pipe 110 and an outlet pipe 120 at both ends, and the inlet pipe 110 and the outlet pipe 120 are each provided with an integral external protrusion 130. The two external protrusions 130 and the ball valve body 10 can be integrally formed. The external protrusions 130 are provided with a flow guide groove 160 inside, and the two ends of the flow guide groove 160 are respectively provided with an inlet groove hole 170 and an outlet groove hole 180 that communicate with the inside of the ball valve body 10. The outer protrusion 130 has a threaded hole 140 on its top. The inner wall of the guide transverse groove 160 has a through hole 150 that communicates with the threaded hole 140. The other side of the guide transverse groove 160 has a mounting slot 190 that is opposite to the through hole 150. The first pressure sensor 210 and the second pressure sensor 220 have upper threaded sections 230 that are screwed into the threaded hole 140, and the outer ring of the tail end of the second pressure sensor 220 and the first pressure sensor 210 has a lower threaded section 240. The automatic sealing assembly 40 includes a segment shell 410, a seat block 430, a sealing block 440, and a spring 450. The spring 450 is installed inside the mounting slot 190, and the seat block 430 is located on top of the spring 450. The seat block 430 and the spring 450 can be fixed together by welding. The sealing block 440, which is inserted into the through hole 150, is located on the side of the seat block 430 away from the spring 450. The sealing block 440 is made of rubber with good sealing performance. The top of the segment shell 410 is screwed into the lower threaded segment 240, and the side of the segment shell 410 is provided with a through port 420.

[0030] The working principle of the ball valve internal leakage detection device based on pressure sensors is as follows: oil in the pipeline enters through the inlet pipe 110 at one end of the ball valve body 10 and exits through the outlet pipe 120 at the other end of the ball valve body 10. The first pressure sensor 210 is used to monitor the oil pressure at the inlet pipe 110 in the ball valve body 10, and the second pressure sensor 220 is used to monitor the oil pressure at the outlet pipe 120 in the ball valve body 10. Specifically, the high-pressure oil inside the inlet pipe 110 has the same pressure as the oil inside the guide groove 160, which is connected to the inlet slot 170 and the outlet slot 180. That is, the oil pressure monitored by the first pressure sensor 210 inside the guide groove 160 is the same as the oil pressure inside the inlet pipe 110. Similarly, the oil pressure monitored by the second pressure sensor 220 inside the guide groove 160 in the corresponding outer protrusion 130 is the same as the oil pressure inside the outlet pipe 120. This achieves real-time monitoring of the oil pressure in both pipes of the ball valve body 10. When the oil pressure inside the inlet pipe 110 decreases, it indicates internal leakage in the ball valve body 10.

[0031] When the first pressure sensor 210 and the second pressure sensor 220 need to be replaced, they can be directly unscrewed through the threaded hole 140 and the upper threaded section 230. A corresponding sealing structure can be provided on the outside of the upper threaded section 230. When the first pressure sensor 210 and the second pressure sensor 220 are unscrewed from the threaded hole 140, the end housings 410 of the first pressure sensor 210 and the second pressure sensor 220 move together and are carried out. The gradually moving end housings 410 relieve the pressure on the sealing block 440, and the contracted spring 450 relaxes. The relaxed spring 450 pushes the sealing block 440 at the end of the seat block 430 outwards until it enters the through hole 150. The sealing block 440 enters the through hole 150 to complete the seal, preventing oil leakage from the pipeline through the through hole 150 and the threaded hole 140 when the first pressure sensor 210 and the second pressure sensor 220 are disassembled. The segment housing 410 at the ends of the removed first pressure sensor 210 and second pressure sensor 220 is disassembled. The disassembled segment housing 410 is then installed at the ends of the new first pressure sensor 210 and second pressure sensor 220, i.e., by engaging the segment housing 410 through the lower threaded section 240. The first pressure sensor 210 and second pressure sensor 220, along with the bottom-mounted segment housing 410, are then inserted into the threaded hole 140. When installing the new first pressure sensor 210 and second pressure sensor 220, the bottom end of the segment housing 410 contacts the sealing block 440 inside the through hole 150 until the first pressure sensor 210 and second pressure sensor 220 are fully screwed into the threaded hole 140, at which point the segment housing 410 extends into the guide transverse groove 160. The entire process allows for quick and convenient replacement of the first pressure sensor 210 and second pressure sensor 220 even during the operation of the ball valve body 10.

[0032] The ball valve internal leakage detection device based on pressure sensors also includes a control connection part 30, which is installed on the outside of the ball valve body 10 and connected to the first pressure sensor 210 and the second pressure sensor 220. The control connection part 30 includes a mounting box, a control module 330, wires 340, and a connector 350. The mounting box is fixed to the outside of the ball valve body 10, and the control module 330 is installed inside the mounting box. One end of each of the two wires 340 is connected to the first pressure sensor 210 and the second pressure sensor 220, respectively, and the other end of each wire 340 is provided with a detachable connector 350 to the control module 330. This ball valve internal leakage detection device based on pressure sensors can control the information acquisition and transmission of the first pressure sensor 210 and the second pressure sensor 220 by cooperating with the control module 330. The control module 330 uses a conventional control chip component known to those skilled in the art, and the connection method between the control module 330 and the first pressure sensor 210 and the second pressure sensor 220 via the wires 340 is also a conventional technical means known to those skilled in the art, and therefore will not be described in detail here. Both the first pressure sensor 210 and the second pressure sensor 220 can be quickly connected to the control module 330 through the cooperation of the wire 340 and the connector 350, which makes it more convenient to replace the first pressure sensor 210 and the second pressure sensor 220.

[0033] In its specific configuration, the mounting box includes an outer housing 310 and a side cover plate 320. The outer housing 310 is fixed to the outside of the ball valve body 10, and the side cover plate 320 is detachably mounted to the outer housing 310. The outer housing 310 and the side cover plate 320 are designed to protect the internally installed control module 330. Both the outer housing 310 and the side cover plate 320 are provided with bolt holes, and the outer housing 310 and the side cover plate 320 are fixed together by bolts. The detachable outer housing 310 and the side cover plate 320 by bolts facilitate the inspection and replacement of components inside the outer housing 310.

[0034] Furthermore, the outer casing 310 has a wire-passing hole on its side, and a sealing ring 360 is installed inside the wire-passing hole. A small hole for the wire 340 to pass through is provided in the center of the sealing ring 360.

[0035] In the above specific embodiment, the automatic sealing component 40 also includes a sealing ring 470, and the lower threaded section 240 is disposed through the sealing ring 470; the sealing ring 470 is disposed to improve the sealing performance after the section shell 410 is connected to the first pressure sensor 210 and the second pressure sensor 220, that is, after the first pressure sensor 210 and the second pressure sensor 220 are installed on the outer protrusion 130.

[0036] Specifically, an expansion port 181 is provided at the bottom of the liquid outlet hole 180. The expansion port 181 is provided to prevent impurities from clogging the tail end of the liquid outlet hole 180. A guide strip 460 is provided on the side of the seat block 430, and a guide groove 191 is provided on the inner wall of the mounting hole 190 to slide with the guide strip 460; the guide strip 460 and the guide groove 191 are provided to improve the stability of the seat block 430 when it moves inside the mounting hole 190. The inner diameter of the through hole 150 is smaller than that of the threaded hole 140, and the diameter of the segment shell 410 is smaller than that of the inner diameter of the through hole 150.

[0037] During long-term use, the liquid inside the ball valve internal leakage detection device based on the pressure sensor is in a static state because the liquid inside the communicating cavity formed by the inlet groove 170, the guide groove 160, and the outlet groove 180 is in a static state for a long time. Even when the ball valve body 10 is opened, the liquid flow is very slow, and the inlet groove 170 and the outlet groove 180 are easily blocked by impurities.

[0038] Please see Figure 3 , Figure 8 , Figure 9 and Figure 10 The ball valve internal leakage detection device based on a pressure sensor also includes a flow guiding self-cleaning assembly 50. Two sets of flow guiding self-cleaning assemblies 50 are respectively installed on the front side of the inlet groove hole 170 on the inner wall of the inlet end pipe 110 and the outlet end pipe 120. The flow guiding self-cleaning assembly 50 includes a flow guiding block 510, a sieve plate 520, and a shaft 530. A front flow guiding groove 580 is provided on the front side of the flow guiding block 510, and a rear flow guiding groove 560 connected to the front flow guiding groove 580 is provided on the back of the flow guiding block 510. The inner diameter of the rear flow guiding groove 560 gradually decreases from the front flow guiding groove 580 to the rear, and the front end of the front flow guiding groove 580 is diffused. The shaft 530 is fixed to one side of the sieve plate 520, and a shaft hole 570 is provided inside the rear flow guiding groove 560 to rotatably engage with the shaft 530. The sieve plate 520 is rotatably locked inside the rear guide groove 560. The end of the sieve plate 520 is provided with a limiting protrusion 550, and the side of the sieve plate 520 is provided with several filter holes 540 inclined towards the end of the liquid inlet groove hole 170.

[0039] The purpose of installing the flow-guiding self-cleaning component 50 on the inner wall of the inlet pipe 110 and the outlet pipe 120 is that when the ball valve body 10 is open, as the oil flows through the inlet pipe 110 and the outlet pipe 120, a portion of the flowing oil flows through the front guide groove 580 on the front side of the guide block 510 into the interior of the rear guide groove 560 and contacts the sieve plate 520. A portion of the fluid, after passing through the filter holes 540 on the side of the sieve plate 520, collects in the rear guide groove 560 and tilts to impact the bottom of the inlet slot hole 170. This means that larger impurities in the fluid are blocked and tilted away from the outlet slot hole 180 and the mounting slot hole 190 by the sieve plate 520, reducing the possibility of larger impurities clogging the bottom of the outlet slot hole 180 and the mounting slot hole 190. The fluid filtered through the side filter holes 540 of the sieve plate 520 is tilted and impacts the bottom of the inlet hole 170. The relatively clean fluid after filtration quickly enters the guide channel 160 from the bottom of the inlet hole 170 and is finally discharged from the outlet hole 180. The rapidly flowing fluid can carry out the impurities remaining in the inlet hole 170, guide channel 160, and outlet hole 180 when the ball valve body 10 is closed, which plays a role in automatic cleaning and prevents the inlet hole 170 and outlet hole 180 from being blocked, thus affecting the accuracy of the monitoring of the first pressure sensor 210 and the second pressure sensor 220.

[0040] Because the front guide channel 580 is an expanded opening, more fluid can enter its interior. After passing through the gradually decreasing size of the rear guide channel 560, the fluid velocity increases, allowing it to quickly impact and pass through the filter holes 540 before converging at the tail end of the rear guide channel 560 and impacting the bottom of the inlet channel 170. The expanded opening of the front guide channel 580 is designed to collect a larger flow of liquid, while the gradually decreasing size of the rear guide channel 560 increases the fluid velocity. This allows the fluid entering the bottom of the inlet channel 170 to more quickly remove impurities from the inlet channel 170, the guide channel 160, and the outlet channel 180, improving the quality of impurity removal.

[0041] The rotating arrangement of the shaft 530 and shaft hole 570 on one side of the sieve plate 520 allows the flowing fluid to quickly impact the sieve plate 520 when the ball valve body 10 is opened. After the sieve plate 520 comes into contact with the inner wall of the guide block 510, the sieve plate 520 immediately stops moving. The inertia generated when it stops instantly will cause the impurities originally attached to the surface of the sieve plate 520 and the surface of the filter hole 540 to be vibrated and cleaned, ensuring that the fluid can pass through the filter hole 540 better.

[0042] In the aforementioned ball valve internal leakage detection device based on a pressure sensor, the fluid guided by the front guide groove 580 and the rear guide groove 560 in the guide block 510 can impact the bottom of the inlet groove 170 with a strong impact force and enter the inlet groove 170. When the moving fluid enters the rear section of the channel formed by the inlet groove 170, the guide groove 160 and the outlet groove 180, the fluid impact cleaning effect will be reduced.

[0043] Please see Figure 4 , Figure 7 , Figure 11 and Figure 12 The ball valve internal leakage detection device based on a pressure sensor also includes a turbulence prevention and anti-blocking component 60. The turbulence prevention and anti-blocking component 60 includes a fixed rod 610, a rotating shaft 620, a spiral blade 630, a hollow frustum-shaped guide sleeve 640, and blades 650. The bottom end of the fixed rod 610 is fixedly connected to the bottom wall of the through-hole 420 inside the section shell 410. One end of the rotating shaft 620 is rotatably connected to the top end of the fixed rod 610. The spiral blade 630 is fixedly sleeved on the outside of the rotating shaft 620. The outer diameter of the spiral blade 630 is gradually reduced. The guide sleeve 640 is fixedly sleeved on the outside of the spiral blade 630. Multiple sets of blades 650 are arranged in a ring array on the outside of the guide sleeve 640. The outer edges of the front end of the guide sleeve 640 are provided with recessed areas 660.

[0044] The fluid, guided by the front guide channel 580 and the rear guide channel 560, obliquely impacts the bottom of the inlet channel hole 170, and some of the fluid flows rapidly into the guide channel 160 through the inlet channel hole 170. The fluid entering the guide channel 160 enters from the large-diameter end of the guide sleeve 640, and then exits through the small port of the guide sleeve 640. During the process of the fluid entering and exiting the guide sleeve 640, the fluid impacts the surface of the spiral blade 630, causing the spiral blade 630 and the guide sleeve 640 to rotate around the central shaft 620. The rotating guide sleeve 640 will also drive the external blade 650 to rotate. The gradually decreasing diameter spiral blade 630 and the guide sleeve 640 result in a faster flow speed after the fluid is discharged from the tail end of the guide sleeve 640. The blade 650 and the spiral blade 630 also increase the turbulence effect on the fluid, so that the fluid passing through the turbulence and anti-blocking component 60 can be accelerated and turbulent. The impurities stored in the guide transverse groove 160 and the liquid outlet hole 180 located in the rear section of the turbulence and anti-blocking component 60 are easier to clean, that is, further improve the cleaning effect of the fluid on the rear section of the guide transverse groove 160 and the interior of the liquid outlet hole 180.

[0045] The recessed area 660 of the flow guide sleeve 640 is designed to make the flow guide sleeve 640 as large as possible, and not to affect the installation of the turbulence prevention and anti-blocking component 60 inside the through hole 420 in the segment shell 410. This facilitates the installation of the turbulence prevention and anti-blocking component 60 inside the through hole 420, which is then inserted into the through hole 150 along with the segment shell 410 and installed inside the flow guide transverse groove 160.

[0046] It should be noted that the specific models and specifications of the first pressure sensor 210, the second pressure sensor 220, and the control module 330 mentioned above need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail here. The power supply and principle of the first pressure sensor 210, the second pressure sensor 220, and the control module 330 are clear to those skilled in the art, and will not be described in detail here.

[0047] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0048] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A ball valve internal leakage detection device based on a pressure sensor, characterized in that, include: The ball valve body (10), the first pressure sensor (210), and the second pressure sensor (220) are provided. Both ends of the ball valve body (10) are provided with an inlet pipe (110) and an outlet pipe (120). An integral external protrusion (130) is provided on the outside of the inlet pipe (110) and the outlet pipe (120). A guide groove (160) is provided inside the external protrusion (130). At both ends of the guide groove (160) are respectively provided an inlet slot (170) and an outlet slot (180) communicating with the inside of the ball valve body (10). The top of the block (130) is provided with a threaded hole (140), and the inner wall of the flow guide groove (160) is provided with a through hole (150) that communicates with the threaded hole (140). The other side of the flow guide groove (160) is provided with a mounting slot (190) that is opposite to the through hole (150). The first pressure sensor (210) and the second pressure sensor (220) are provided with upper thread sections (230) that are screwed into the threaded hole (140), and the outer ring of the tail end of the second pressure sensor (220) and the first pressure sensor (210) is provided with lower thread sections (240). An automatic sealing assembly (40) includes a segment shell (410), a seat block (430), a sealing block (440), and a spring (450). The spring (450) is installed inside the mounting slot (190). The seat block (430) is located on top of the spring (450), and a sealing block (440) that is inserted into the through hole (150) is provided on the side of the seat block (430) away from the spring (450). The top of the segment shell (410) is screwed into the lower threaded segment (240), and a through opening (420) is provided on the side of the segment shell (410).

2. The ball valve internal leakage detection device based on a pressure sensor according to claim 1, characterized in that, It also includes a control connection part (30), which is installed on the outside of the ball valve body (10) and connected to the first pressure sensor (210) and the second pressure sensor (220).

3. The ball valve internal leakage detection device based on a pressure sensor according to claim 2, characterized in that, The control connection part (30) includes a mounting box, a control module (330), wires (340) and a connector (350). The mounting box is fixed on the outside of the ball valve body (10). The control module (330) is installed inside the mounting box. One end of the two wires (340) is connected to the first pressure sensor (210) and the second pressure sensor (220) respectively. The other end of the wires (340) is provided with a connector (350) that is detachable from the control module (330).

4. The ball valve internal leakage detection device based on a pressure sensor according to claim 3, characterized in that, The mounting box includes an outer shell (310) and a side cover plate (320). The outer shell (310) is fixed to the outside of the ball valve body (10), and the side cover plate (320) is detachably mounted to the outer shell (310).

5. A ball valve internal leakage detection device based on a pressure sensor according to claim 4, characterized in that, The outer casing (310) has a wire hole on its side, and a sealing ring (360) is provided inside the wire hole.

6. The ball valve internal leakage detection device based on a pressure sensor according to claim 4, characterized in that, Both the outer shell (310) and the side cover plate (320) are provided with bolt holes, and the outer shell (310) and the side cover plate (320) are fixed together by bolts.

7. The ball valve internal leakage detection device based on a pressure sensor according to claim 1, characterized in that, The automatic sealing assembly (40) also includes a sealing ring (470), and the lower threaded section (240) is disposed through the sealing ring (470).

8. The ball valve internal leakage detection device based on a pressure sensor according to claim 1, characterized in that, An expansion port (181) is provided at the bottom of the liquid outlet hole (180).

9. A ball valve internal leakage detection device based on a pressure sensor according to claim 1, characterized in that, The seat block (430) is provided with a guide strip (460) on its side, and the inner wall of the mounting slot (190) is provided with a guide groove (191) that slides with the guide strip (460).

10. A ball valve internal leakage detection device based on a pressure sensor according to claim 1, characterized in that, The inner diameter of the through hole (150) is smaller than that of the threaded hole (140), and the diameter of the segment shell (410) is smaller than that of the inner diameter of the through hole (150).

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