CN210461767U - Ball valve of spherical pipeline - Google Patents
Ball valve of spherical pipeline Download PDFInfo
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- CN210461767U CN210461767U CN201921403354.5U CN201921403354U CN210461767U CN 210461767 U CN210461767 U CN 210461767U CN 201921403354 U CN201921403354 U CN 201921403354U CN 210461767 U CN210461767 U CN 210461767U
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Abstract
The utility model discloses a spherical pipeline ball valve, which comprises a valve body, a valve seat and a ball body, wherein the ball body is respectively provided with an upper valve rod hole, a lower valve rod hole and a lower valve shaft inner hole, and the lower valve shaft inner hole is arranged at the closed end of the lower valve rod hole; the upper end valve rod hole is assembled with the valve rod fixing end of the valve rod, and the pin shaft is clamped between the outer wall of the valve rod fixing end and the inner wall of the upper end valve rod hole; the end surfaces of the two valve bodies are mutually attached and then welded into a whole; lower extreme valve stem hole and the rotatable assembly of lower valve shaft, lower valve shaft installation, fix on the valve body, and the lower valve shaft has set gradually with the corresponding department of lower valve shaft hole: install the top core in the first regulation hole, the top of top core is spherical tight hemisphere in top, but the tight hemisphere in top and lower valve shaft hole block, spherical rotation assembly, top core bottom and adjusting screw top are tight, but and the top core is in first regulation hole circumference rotation, axial rotation assembly, and adjusting screw passes through the screw and closes the assembly soon with the second regulation hole.
Description
Technical Field
The utility model relates to a ball valve technique especially relates to a spherical pipeline ball valve, and it is applicable to the long gas transmission line gas transmission of heavy-calibre high pressure, oil transportation field.
Background
The development of pipeline transportation technology for half a century forms a global oil and gas transportation pipe network, which is an energy supply system for human survival. The system passes through seismic zones, marshlands, rivers, lakes and hills from the arctic circle to the equator, from a high mountain to the seabed and from a plateau to a desert. The device is erected and directly buried underground; the operation in the field is difficult to maintain, and the service life is required to be 30 years; the transported medium contains sulfur, rust and impurities and requires zero-order sealing, so that high design and manufacturing requirements are provided for the long-distance pipeline ball valve, and the existing pipeline ball valve has poor tensile, compression and bending bearing capabilities in an earthquake zone or a place where geological collapse easily occurs because most of the existing pipeline ball valve is of a cylindrical structure and a welding line between a valve body and a valve cover is a fillet welding line;
the existing cylindrical pipeline ball valve mostly adopts a three-section structure, two main welding seams exist in a valve body, the welding workload is large, and the manufacturing period is long; because the welding line of the cylindrical double-welding-line structure is close to the valve seat, an O-shaped ring of the valve seat is easily burnt out in the welding process, and the sealing failure is caused;
the cylindrical valve body structure has lower stress capacity than a spherical valve body, so the cylindrical valve body structure has heavy body, high manufacturing cost and difficult transportation, and does not have the competitive advantage of cost performance and market.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect of the prior art, the utility model aims to solve the technical problem that a spherical pipeline ball valve is provided, have simple structure, maintain convenient, light in weight, with low costs, the valve body can bear characteristics such as higher pipeline is tensile, compression, bending stress, sealed reliable.
In order to achieve the purpose, the utility model provides a spherical pipeline ball valve, which comprises a valve body, a valve seat and a ball body, wherein the ball body is arranged inside the valve body and the valve seat, an upper valve rod hole, a lower valve rod hole and a lower valve shaft inner hole are respectively arranged on the ball body, and the lower valve shaft inner hole is arranged at the closed end of the lower valve rod hole;
the upper end valve rod hole is assembled with the valve rod fixing end of the valve rod, and the pin shaft is clamped between the outer wall of the valve rod fixing end and the inner wall of the upper end valve rod hole; the end surfaces of the two valve bodies are mutually attached and then welded into a whole;
the lower end valve rod hole is rotatably assembled with the lower valve shaft, the lower valve shaft is installed and fixed on the valve body, and the corresponding positions of the lower valve shaft and the inner hole of the lower valve shaft are sequentially provided with: the first adjusting hole, the second adjusting hole, the third adjusting hole and the end hole are communicated in sequence and penetrate through the lower valve shaft;
install the apical lamella in the first regulation hole, apical lamella top is the tight hemisphere in spherical top, but the tight hemisphere in top and lower valve shaft hole block, spherical rotation assembly, apical lamella bottom and adjusting screw top are tight, and the apical lamella can the circular rotation, axial rotation assembly in first regulation hole, it is sealed through O type sealing washer between apical lamella and the first regulation hole inner wall, adjusting screw passes through the screw and closes the assembly soon with the second regulation hole.
Preferably, the valve body inboard is provided with the valve body step groove, be provided with the valve seat step with valve body step groove complex on the disk seat outer wall.
Preferably, still be provided with first valve rod step axle, second valve rod step axle, valve rod drive division on the valve rod respectively, first valve rod step axle, second valve rod step axle, valve rod drive division's diameter diminishes in proper order, and the part that the valve rod was not provided with the valve rod stiff end packs into in the valve neck and with but the circular rotation assembly of it, but go up the valve neck top and seal through the flange, valve rod drive division passes behind the flange and fixes with the assembly of outside ball valve drive structure, goes up the valve neck and fixes on the valve body.
Preferably, the first valve rod step shaft is sleeved with a valve rod sealing ring, and the valve rod sealing ring is used for sealing a gap between the first valve rod step shaft and the inner wall of the upper valve neck; the second valve rod step shaft is sleeved with a four-open-ring limiting pad, the four-open-ring limiting pad is provided with an outer ring groove and a top flange respectively, the four-open ring is sleeved in the outer ring groove, and the top flange is clamped and assembled with an upper valve neck step hole formed in the inner wall of an upper valve neck.
Preferably, the inner bore diameter of the four open rings is less than the maximum outer diameter of the valve rod.
Preferably, a plurality of O-shaped rings are respectively arranged on the inner ring and the outer ring of the valve rod sealing ring, and the valve rod sealing ring is respectively sealed with the first valve rod step shaft and the inner wall of the upper valve neck through the O-shaped rings when in use.
Preferably, the bottom of the adjusting screw is tightly attached to the top of the locking screw, the locking screw is assembled with the second adjusting hole in a screwing mode through threads, the bottom of the locking screw enters the third adjusting hole to be assembled with the anti-rotating shaft in a clamping mode or in a jacking mode, and the anti-rotating shaft is assembled with the third adjusting hole in an axially sliding mode and cannot rotate circumferentially.
Preferably, the bottom end face of the rotation-preventing shaft enters the end hole and is tightly pressed against the inner end face of the plug cover, a spring gasket is installed between the plug cover and the inner end face of the end hole, and the outer wall of the plug cover and the inner wall of the end hole are assembled in a screwing mode through threads.
Preferably, a valve body middle cavity discharging system is arranged at the middle cavity position of the valve body, the valve body middle cavity discharging system consists of a discharging connector, a discharging cut-off ball valve and a discharging plug screw, the discharging connector is used for communicating an inlet of the discharging cut-off ball valve with the middle cavity of the valve body, an outlet of the discharging cut-off ball valve is communicated with an inlet of the discharging plug screw, and the discharging cut-off ball valve is used for controlling the disconnection or communication between the discharging plug screw and the discharging connector; the discharge screw plug is used for controlling the on-off of the discharge port of the valve body.
Preferably, the bottom of the inner cavity of the valve body is provided with a sewage discharge system, the sewage discharge system consists of a sewage discharge connector, a first cut-off ball valve, a second cut-off ball valve and a sewage discharge screw, the bottom of the inner cavity of the valve body is communicated with an inlet of the first cut-off ball valve through the sewage discharge connector, an outlet of the first cut-off ball valve is communicated with an inlet of the second cut-off ball valve, an outlet of the second cut-off ball valve is communicated with a sewage discharge port at the sewage discharge screw, and the sewage discharge screw and the sewage discharge port are assembled;
the first cutting ball valve and the second cutting ball valve are used for controlling the pipeline from the sewage connector to the sewage outlet to be communicated or closed.
The utility model has the advantages that:
1. the utility model discloses a spherical forging valve body, for traditional cylindric valve body, intensity is good, and under the same valve body wall thickness, spherical valve body can bear higher pressure and atress diameter because the atress dispersion, consequently at the spherical pipeline ball valve body of same bore, same pressure operating mode for cylindric pipeline ball valve body, can reduce weight about 35%, low in manufacturing cost, the appearance is small, is convenient for transport and hoist and mount.
2. The utility model discloses a one valve body owner welding seam (two valve body junctions welding), for the twice welding seam of cylindric valve body, the welding work volume is little, and is with low costs, and the defect is few.
3. The utility model discloses a main welding seam of valve body is at the valve intermediate position (the central line corresponds department about the spheroid in figure 1), consequently transmit to disk seat department temperature when the welding lower, it is nearer from the disk seat to have solved the main welding seam of cylindric valve body, need stop the problem of slow cooling midway, high production efficiency, can refer to figure 5a, figure 5b, the distance L1 of the main welding seam of valve seat O shape sealing washer and valve body in figure 5a, obviously be greater than the distance L2 of the main welding seam of valve seat O shape sealing washer and valve body in figure 5b far away.
4. Because the long-distance pipeline ball valve has the working characteristic of long-distance medium conveying, the long-distance pipeline ball valve needs to be installed underground in many use occasions, the appearance of the ball valve is in an arc design, the appearance size of the ball valve is small compared with that of a cylindrical pipeline ball valve, the construction cost of an installation well is low, and the long-distance pipeline ball valve is convenient to overhaul and maintain under the condition of the installation well with the same size (see fig. 6).
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is an enlarged view at B in fig. 1.
Fig. 4 is a schematic structural diagram of the present invention.
Fig. 5a and 5b are schematic diagrams comparing the distance and position between the main welding line of the valve body and the O-shaped sealing ring of the valve seat in the prior art. Wherein, fig. 5a is the structure schematic diagram of the spherical pipeline ball valve of the present invention, and fig. 5b is the structure schematic diagram of the prior art cylindrical pipeline ball valve. Reference numeral 900 is a valve seat O-ring seal.
Fig. 6a and 6b are schematic diagrams comparing the space of the installation well in the present invention with the prior art. Wherein fig. 6a is a schematic view of the installation of the ball-type pipeline valve of the present invention, and fig. 6b is a schematic view of the installation of the prior art cylindrical pipeline ball valve.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1 to 4, the spherical pipeline ball valve of the present embodiment includes a valve body 3, a valve seat 4, and a ball body 5, wherein a valve body step groove 301 is formed in the inner side of the valve body 3, and a valve seat step 401 matched with the valve body step groove 301 is formed on the outer wall of the valve seat 4, so that the outer wall of the valve seat 4 is engaged with the valve body step groove 301;
the ball body 5 is arranged on the inner sides of the valve body 3 and the valve seat 4, an upper end valve rod hole 502, a lower end valve rod hole 501 and a lower valve shaft inner hole 503 are respectively arranged on the ball body 5, and the lower valve shaft inner hole 503 is arranged on the closed end of the lower end valve rod hole 501;
the upper end valve rod hole 502 is assembled with the valve rod fixing end 604 of the valve rod 6, and the pin shaft 7 is clamped between the outer wall of the valve rod fixing end 604 and the inner wall of the upper end valve rod hole 502, so that the valve rod fixing end 604 is fixed in the upper end valve rod hole 502;
still be provided with first valve rod step axle 601, second valve rod step axle 602, valve rod drive division 603 on the valve rod 6 respectively, the diameter of first valve rod step axle 601, second valve rod step axle 602, valve rod drive division 603 diminishes in proper order, and the part that valve rod 6 was not provided with valve rod stiff end 604 packs into in the valve neck 8 and with but the circumferencial rotation assembly of it, it seals through flange 9 to go up the valve neck 8 top, and valve rod drive division 603 passes behind the flange 9 and is fixed with the assembly of outside ball valve drive structure. When the ball valve is used, the valve rod 6 is driven to rotate circumferentially through the external ball valve driving structure, so that the ball body 5 is driven to rotate circumferentially synchronously, and the opening and closing and the flow regulation of the ball valve are realized. The external ball valve actuation structure may be a handle disc. The flange 9 may also be used in connection with an actuator (external ball valve drive).
The upper valve neck 8 is fixed on the valve body 3, the number of the valve bodies 3 is two, the end faces of the two valve bodies 3 are tightly attached to each other and then welded into a whole, and the position of a welding line is located near the horizontal center line in the figure 1. The design has only one main welding line, and compared with two welding lines of the cylindrical valve body, the design has the advantages of small welding workload, low cost and few defects. And the temperature transmitted to the valve seat during welding is lower, the problems that the main welding line of the cylindrical valve body is closer to the valve seat and needs to be stopped midway for slow cooling are solved, and the production efficiency is high.
The first valve rod step shaft 601 is sleeved with a valve rod sealing ring 16, and the valve rod sealing ring 16 is used for sealing a gap between the first valve rod step shaft 601 and the inner wall of the upper valve neck 8; the second valve stem step shaft 602 is sleeved with a four-open-ring limiting pad 18, the four-open-ring limiting pad 18 is provided with an outer ring groove 1801 and a top flange 1802 respectively, the four open rings 17 are sleeved in the outer ring groove 1801, and the top flange 1802 is clamped and assembled with an upper valve neck step hole 801 arranged on the inner wall of an upper valve neck 8. The diameter of the inner hole of the four-open ring 17 is less than the maximum excircle diameter of the valve rod, so that a flying prevention structure can be formed.
Preferably, a plurality of O-rings are respectively mounted on the inner ring and the outer ring of the valve stem seal ring 16, and the valve stem seal ring 16 is respectively sealed with the first valve stem step shaft 601 and the inner wall of the upper valve neck 8 by the O-rings in use, so as to form a first seal of the valve stem 6.
Lower extreme valve shaft hole 501 and lower valve shaft 2 rotatable assembly, lower valve shaft 2 installation, fix on valve body 3, and lower valve shaft 2 and lower valve shaft hole 503 correspond the department and have set gradually: the valve shaft comprises a first adjusting hole 201, a second adjusting hole 202, a third adjusting hole 203 and an end hole 204, wherein the first adjusting hole 201, the second adjusting hole 202, the third adjusting hole 203 and the end hole 204 are communicated in sequence and penetrate through the lower valve shaft 2;
a top core 24 is installed in the first adjusting hole 201, the top of the top core 24 is a spherical jacking hemisphere 2401, the jacking hemisphere 2401 is clamped with an inner hole 503 of the lower valve shaft and can be assembled in a spherical rotating manner, the bottom of the top core 24 is tightly jacked with the top of an adjusting screw 23, the top core 24 can be assembled in the first adjusting hole 201 in a circumferential rotating manner and in an axial rotating manner, the top core 24 is sealed with the inner wall of the first adjusting hole 201 through an O-shaped sealing ring 25, the adjusting screw 23 is assembled with the second adjusting hole 202 in a screwing manner through threads, so that the top core 24 is supported in a jacking manner, the bottom of the adjusting screw 23 is tightly attached to the top of a locking screw 22, the locking screw 22 is assembled with the second adjusting hole 202 in a screwing manner through threads, the bottom of the locking screw 22 enters the third adjusting hole 203 and is assembled or jacked with a rotation preventing shaft 21, the rotation preventing shaft 21 and the third adjusting hole 203 can slide axially and can not be assembled, if the cross sections of the rotation preventing shaft 21 and the third adjusting hole 203 are polygonal, such as hexagonal, the rotation preventing shaft 21 can be prevented from rotating in the inner circumference of the third adjusting hole 203, and the rotation preventing shaft 21 can limit the circumferential rotation of the locking screw 22 without rotating, so that the locking screw 22 can be prevented from driving the circumferential rotation of the adjusting screw to be axially displaced, and the positioning failure of the tightening hemisphere 2401 on the sphere 5 can be caused, and the center of the sphere is ensured to be matched with the center of the valve seat.
When in use, the rotating shaft is prevented; the locking screw 22 and the adjusting screw 23 are used for adjusting dimensional errors (errors of a ball body, a valve seat and a valve body) caused by part manufacturing and whole assembly, and the specific working principle is that the adjusting screw 23 is in threaded fit with the second adjusting hole 202 to adjust the axial up-and-down position of the top core. The locking screw 22 and the rotation-preventing shaft 21 prevent the position accuracy of the top core 24 from being affected by the loosening of the adjusting screw 23 after long-term use.
The bottom end face of the rotation preventing shaft 21 enters the end hole 204 and is tightly propped against the inner end face of the plug cover 19, a spring gasket 20 is installed between the plug cover 19 and the inner end face of the end hole 204, and the outer wall of the plug cover 19 is screwed with the inner wall of the end hole 204 through threads. The spring washer 20 is used to prevent the cap 19 from being unscrewed out of the end hole 204 in an abnormal state.
Preferably, a valve body middle chamber exhaust system 11 is provided at the middle chamber position of the valve body 3, the valve body middle chamber exhaust system 11 is used for solving the problem of abnormal pressure rise of the middle chamber when the valve is closed, the valve body middle chamber exhaust system 11 is composed of an exhaust joint 1101, an exhaust cut-off ball valve 1102 and an exhaust screw plug 1103, the exhaust joint 1101 is used for communicating the inlet of the exhaust cut-off ball valve 1102 with the middle chamber (middle part of the inner chamber) of the valve body 3, the outlet of the exhaust cut-off ball valve 1102 is communicated with the inlet of the exhaust screw plug 1103, and the exhaust cut-off ball valve 1102 is used for controlling the disconnection or communication between the exhaust screw plug 1103 and the exhaust joint 1101. The vent screw 1103 is used to control the cross section of the vent to control the vent flow.
Preferably, the bottom of the inner cavity of the valve body 3 is provided with a sewage system 15, the sewage system 15 is used for discharging foreign matters deposited in the inner cavity of the valve body and media in the inner cavity of the valve body during maintenance, the sewage system 15 is composed of a sewage connector 1501, a first cut-off ball valve 1502, a second cut-off ball valve 1503 and a sewage screw 1504, the sewage connector 1501 connects the bottom of the inner cavity of the valve body 3 with the inlet of the first cut-off ball valve 1502, the outlet of the first cut-off ball valve 1502 is communicated with the inlet of the second cut-off ball valve 1503, the outlet of the second cut-off ball valve 1503 is communicated with a sewage outlet at the sewage screw 1504, and the sewage screw 1504 is assembled with the sewage outlet in a screwing manner through threads, so. The first cut-off ball valve 1502 and the second cut-off ball valve 1503 are used for controlling the pipeline from the sewage joint 1501 to the sewage outlet to be communicated or closed, and the first cut-off ball valve 1502 and the second cut-off ball valve 1503 are arranged. The second cut-off ball valve 1503 is a standby maintenance ball valve and is normally opened during working; when the first ball valve is worn to cause leakage due to long-term use, the second ball valve works to ensure the sealing of the system.
Preferably, in order to reduce the abrasion of each part after long-term operation and reduce the micro leakage between the valve rod seal and the valve seat seal, a first valve rod grease injection hole 12 and a first valve rod grease injection hole 13 are respectively arranged on the upper valve neck 8, and a valve seat grease injection hole 10 is arranged on the valve body 3. When the valve rod lubricating device is used, lubricating oil or lubricating grease is injected into the upper valve neck 8 through the first valve rod grease injection hole 12 and the first valve rod grease injection hole 13, so that the valve rod 6 is lubricated. In addition, lubricating oil or lubricating grease is injected into the contact surface of the valve seat and the ball body through the valve seat grease injection hole 10, so that the lubrication between the ball body and the valve seat is ensured.
Preferably, in order to ensure the convenient reliability of the valve in the processes of distribution, transportation, installation and use, the lifting lug 14 and the base 1 are fixed on the valve body 3; the base 1 is used for supporting the whole spherical pipeline ball valve, and the lifting lug 14 is used for facilitating lifting.
The novel features not described in detail are all known to the person skilled in the art.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a spherical pipeline ball valve, includes valve body, disk seat, spheroid, the spheroid is installed at valve body, disk seat inboard, characterized by: the ball body is respectively provided with an upper end valve rod hole, a lower end valve rod hole and a lower valve shaft inner hole, and the lower valve shaft inner hole is arranged at the closed end of the lower end valve rod hole;
the upper end valve rod hole is assembled with the valve rod fixing end of the valve rod, and the pin shaft is clamped between the outer wall of the valve rod fixing end and the inner wall of the upper end valve rod hole; the end surfaces of the two valve bodies are mutually attached and then welded into a whole;
the lower end valve rod hole is rotatably assembled with the lower valve shaft, the lower valve shaft is installed and fixed on the valve body, and the corresponding positions of the lower valve shaft and the inner hole of the lower valve shaft are sequentially provided with: the first adjusting hole, the second adjusting hole, the third adjusting hole and the end hole are communicated in sequence and penetrate through the lower valve shaft;
install the apical lamella in the first adjusting hole, apical lamella top is the tight hemisphere in spherical top, but the tight hemisphere in top and lower valve shaft hole block, spherical rotation assembly, apical lamella bottom and adjusting screw top are tight, and the apical lamella is in first adjusting hole circumferential rotation, axial rotation assembly.
2. The spherical line ball valve as claimed in claim 1, wherein: the valve body inboard is provided with the valve body step groove, be provided with the disk seat step with valve body step groove complex on the disk seat outer wall.
3. The spherical line ball valve as claimed in claim 1, wherein: still be provided with first valve rod step axle, second valve rod step axle, valve rod drive division on the valve rod respectively, first valve rod step axle, second valve rod step axle, valve rod drive division's diameter diminishes in proper order, and the valve rod does not be provided with in the part of valve rod stiff end packs into the valve neck and with it but the circular rotation assembly, but go up the valve neck top and seal through the flange, valve rod drive division passes behind the flange and fixes with the assembly of outside ball valve drive structure, goes up the valve neck and fixes on the valve body.
4. A spherical line ball valve as defined in claim 3, wherein: the first valve rod step shaft is sleeved with a valve rod sealing ring, and the valve rod sealing ring is used for sealing a gap between the first valve rod step shaft and the inner wall of the upper valve neck; the second valve rod step shaft is sleeved with a four-open-ring limiting pad, the four-open-ring limiting pad is provided with an outer ring groove and a top flange respectively, the four-open ring is sleeved in the outer ring groove, and the top flange is clamped and assembled with an upper valve neck step hole formed in the inner wall of an upper valve neck.
5. The spherical line ball valve as claimed in claim 4, wherein: the diameter of the inner hole of the four open rings is less than the maximum excircle diameter of the valve rod.
6. The spherical line ball valve as claimed in claim 4, wherein: a plurality of O-shaped rings are respectively arranged on the inner ring and the outer ring of the valve rod sealing ring, and the valve rod sealing ring is respectively sealed with the first valve rod step shaft and the inner wall of the upper valve neck through the O-shaped rings during use.
7. The spherical line ball valve as claimed in claim 1, wherein: the ejection core and the inner wall of the first adjusting hole are sealed through an O-shaped sealing ring, and the adjusting screw is screwed with the second adjusting hole through threads;
the bottom of the adjusting screw is tightly attached to the top of the locking screw, the locking screw is assembled with the second adjusting hole in a screwing mode through threads, the bottom of the locking screw enters the third adjusting hole to be assembled with the anti-rotating shaft in a clamping mode or in a jacking mode, and the anti-rotating shaft is assembled with the third adjusting hole in an axially sliding mode and cannot rotate circumferentially.
8. The spherical line ball valve as claimed in claim 7, wherein: the bottom end face of the anti-rotating shaft enters the end hole and is tightly propped against the inner end face of the plug cover, a spring gasket is arranged between the plug cover and the inner end face of the end hole, and the outer wall of the plug cover and the inner wall of the end hole are assembled in a screwing mode through threads.
9. A spherical line ball valve according to any of claims 1 to 8, wherein: the middle cavity of the valve body is provided with a middle cavity discharging system of the valve body, the middle cavity discharging system of the valve body consists of a discharging connector, a discharging cut-off ball valve and a discharging plug screw, the discharging connector is used for communicating an inlet of the discharging cut-off ball valve with the middle cavity of the valve body, an outlet of the discharging cut-off ball valve is communicated with an inlet of the discharging plug screw, and the discharging cut-off ball valve is used for controlling the disconnection or the communication between the discharging plug screw and the discharging connector; the discharge screw plug is used for controlling the on-off of the discharge port of the valve body.
10. A spherical line ball valve according to any of claims 1 to 8, wherein: a blowdown system is arranged at the bottom of the inner cavity of the valve body and consists of a blowdown connector, a first cut-off ball valve, a second cut-off ball valve and a blowdown screw, the blowdown connector enables the bottom of the inner cavity of the valve body to be communicated with an inlet of the first cut-off ball valve, an outlet of the first cut-off ball valve is communicated with an inlet of the second cut-off ball valve, an outlet of the second cut-off ball valve is communicated with a blowdown port at the position of the blowdown screw, and the blowdown screw and the blowdown port are assembled in a screwed mode through threads;
the first cutting ball valve and the second cutting ball valve are used for controlling the pipeline from the sewage connector to the sewage outlet to be communicated or closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921403354.5U CN210461767U (en) | 2019-08-27 | 2019-08-27 | Ball valve of spherical pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921403354.5U CN210461767U (en) | 2019-08-27 | 2019-08-27 | Ball valve of spherical pipeline |
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| Publication Number | Publication Date |
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| CN210461767U true CN210461767U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921403354.5U Active CN210461767U (en) | 2019-08-27 | 2019-08-27 | Ball valve of spherical pipeline |
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| CN (1) | CN210461767U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117108780A (en) * | 2023-10-11 | 2023-11-24 | 北京市阀门总厂股份有限公司 | A fully welded ball valve ball automatic positioning center structure and assembly and installation method |
| WO2025050670A1 (en) * | 2023-09-06 | 2025-03-13 | 东方电气集团东方电机有限公司 | Ball valve body and ball valve |
-
2019
- 2019-08-27 CN CN201921403354.5U patent/CN210461767U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025050670A1 (en) * | 2023-09-06 | 2025-03-13 | 东方电气集团东方电机有限公司 | Ball valve body and ball valve |
| CN117108780A (en) * | 2023-10-11 | 2023-11-24 | 北京市阀门总厂股份有限公司 | A fully welded ball valve ball automatic positioning center structure and assembly and installation method |
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