CN113503372B - Low-temperature ball valve with safety adjustable mechanism - Google Patents
Low-temperature ball valve with safety adjustable mechanism Download PDFInfo
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- CN113503372B CN113503372B CN202110712207.1A CN202110712207A CN113503372B CN 113503372 B CN113503372 B CN 113503372B CN 202110712207 A CN202110712207 A CN 202110712207A CN 113503372 B CN113503372 B CN 113503372B
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- telescopic
- adjusting rod
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K35/00—Means to prevent accidental or unauthorised actuation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K39/00—Devices for relieving the pressure on the sealing faces
- F16K39/06—Devices for relieving the pressure on the sealing faces for taps or cocks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention relates to the technical field of low-temperature sealing valves, in particular to a low-temperature ball valve with a safety adjustable mechanism. According to the low-temperature ball valve with the safety adjustable mechanism, the lateral telescopic hole with the built-in lateral buffer device is formed in the ball valve body, and the internal communication hole is communicated with the lateral telescopic hole through the lateral pressure release hole, so that the impact of a conveying medium in a pipeline on a pipeline connecting end can be automatically reduced when the valve body is opened and closed, and the safety and durability of the whole ball valve are greatly improved; the side pressure relief pipe of the overhead elastic self pressure relief cover and the drill hole type fixed pressure relief cover is fixed on the outer side surface of the outer valve casing through the side direction assembly seat in a threaded manner, so that the outside pressure relief can be facilitated, the valve body is prevented from being damaged under the extreme condition, and the later maintenance is facilitated.
Description
Technical Field
The invention relates to the technical field of low-temperature sealing valves, in particular to a low-temperature ball valve with a safety adjustable mechanism.
Background
The ball valve is developed from a cock, the opening and closing piece of the ball valve is used as a ball body, and the ball body is rotated by 90 degrees around the axis of the valve rod to realize the purpose of opening and closing. Ball valves are used on pipes primarily to shut off, dispense and redirect the flow of media. The ball valve has the advantages of simple structure, good sealing performance, small volume, light weight, low material consumption, small installation size, small driving moment, simple and convenient operation and easy realization of quick opening and closing in a certain nominal passthrough range, and is one of the fastest-expanding valve varieties in recent decades. In particular, in the industrial and developed countries such as the united states, the daily, the germany, the law, the intention, the western, the english and the like, the ball valve is very widely used, the variety and the quantity of used products are still expanding continuously, the ball valve is developed to high temperature, high pressure, large mouth, high tightness, long service life, excellent regulation performance and one valve multifunctional direction, the reliability and other performance indexes of the ball valve reach higher levels, and the ball valve is partially replaced by a gate valve, a stop valve and a throttle valve. With the technological progress of ball valves, there will be a wider range of applications in foreseeable short-term, in particular on petroleum and gas pipelines, on refinery cracking units and in the nuclear industry. In addition, in the fields of large and medium caliber, medium and low pressure in other industries, ball valves are also one of the dominant valve types. Ball valves are a valve that was developed in the 50 s of this century, and in the half-century, ball valves have evolved into a major class of valves.
The cryogenic ball valve has some advantages over other valve types as follows: 1. the fluid resistance is small, the ball valve is one of all valves with the smallest fluid resistance, and even the ball valve with the reduced diameter has quite small fluid resistance; 2. the valve is rapid and convenient to switch, and the ball valve can complete the full-opening or full-closing action as long as the valve rod rotates 90 degrees, so that the quick opening and closing can be realized easily; 3. the sealing performance is good. The sealing ring of the valve seat of the ball valve is generally made of elastic materials such as polytetrafluoroethylene, so that the sealing is easy to ensure, and the sealing force of the ball valve is increased along with the increase of the pressure of a medium; 4. the valve rod is sealed reliably. When the ball valve is opened and closed, the valve rod only rotates, so that the packing seal of the valve rod is not easy to break, and the sealing force of the valve rod reverse seal is increased along with the increase of the medium pressure; 5. the ball valve is opened and closed only by 90 degrees, so that automatic control and remote control are easy to realize, and the ball valve can be provided with a pneumatic device, an electric device, a hydraulic device, a gas-liquid linkage device or an electrohydraulic linkage device; 6. the ball valve channel is smooth and smooth, medium is not easy to deposit, and pipeline ball passing can be performed.
However, most of the existing low-temperature ball valves are simple in structure and fixed in structure, and pressure release cannot be automatically performed inside the valve body, so that safety is limited.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the problems in the prior art, an improved low-temperature ball valve with a safety adjustable mechanism is provided, and the problems that most of the existing low-temperature ball valves are simple in structure, fixed in structure, incapable of automatically releasing pressure in a valve body and limited in safety are solved.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a low temperature ball valve with security adjustable mechanism, includes outside valve casing and ball valve body, outside valve casing upper end be equipped with the extension valve gap through ring flange fixed mounting, ball valve body upper end be located the inside fixedly connected with longitudinal adjustment pole of extension valve gap, the inside intercommunicating pore that has seted up of ball valve body, ball valve body lateral surface set up the side direction expansion hole of built-in side direction buffer, the inside intercommunicating pore medial surface set up the side direction relief hole that is linked together with the side direction expansion hole.
The inside of the longitudinal adjusting rod is provided with a built-in adjusting hole communicated with the internal communication hole, the inside of the built-in adjusting hole is movably provided with an internal adjusting rod, the bottom end of the internal adjusting rod is meshed with a transmission transverse adjusting rod, the bottom end of the internal adjusting rod and the inner connecting end of the transverse adjusting rod are coaxially fixed with conical gears meshed with each other, and an integral structure transverse screw rod for adjusting the lateral buffering device is coaxially fixed near the lateral buffering device end of the transverse adjusting rod.
The lateral buffer device comprises a top telescopic sealing block movably inserted in the lateral telescopic hole, an inner telescopic adjusting block in threaded connection with the transverse screw rod, and an inner extrusion spring for connecting the top telescopic sealing block and the inner telescopic adjusting block.
The outer side surface of the longitudinal adjusting rod is positioned at the top end of the built-in adjusting hole, a top control groove communicated with the built-in adjusting hole is formed in the outer side surface of the longitudinal adjusting rod, and a hexagonal control head is coaxially fixed at the top end of the internal adjusting rod.
The outer side of the longitudinal adjusting rod is positioned at the lower end of the top control groove and is provided with an integral structure limiting ring, the outer side surface of the longitudinal adjusting rod is positioned above the limiting ring and is provided with a thread adjusting surface, and an internal thread sealing tube for closing the top control groove is sleeved on the thread adjusting surface at the outer side of the longitudinal adjusting rod in a threaded manner.
The lateral pressure relief holes are positioned at the connecting ends of the internal communication hole and the lateral telescopic holes and are provided with conical guide holes.
The side pressure release valve is characterized in that the outer side face of the outer valve casing is provided with a side assembly seat, a side pressure release pipe is fixed to the inner thread of the side assembly seat, the top end of the side pressure release pipe is provided with an elastic self-pressure release cover, and the bottom end of the side pressure release pipe is provided with a drilling type fixed pressure release cover.
The outer side surface of the lengthened valve cover is provided with a round drip plate for preventing condensed water from flowing into the heat insulation layer.
The outer walls of the two sides of the outer valve casing are provided with lateral conveying pipes with external lateral flange assembling plates.
The ball valve body lateral surface be located inside intercommunicating pore top and seted up the annular flexible recess of built-in telescopic fire collar, annular flexible recess in the bottom surface on set up the bottom extrusion hole that is linked together with inside intercommunicating pore, telescopic fire collar lower extreme have to the inside bellied bottom control axle in bottom extrusion hole.
The beneficial effects of the invention are as follows:
(1) According to the low-temperature ball valve with the safety adjustable mechanism, the lateral telescopic hole with the built-in lateral buffer device is formed in the ball valve body, and the internal communication hole is communicated with the lateral telescopic hole through the lateral pressure release hole, so that the impact of a conveying medium in a pipeline on a pipeline connecting end can be automatically reduced when the valve body is opened and closed, and the safety and durability of the whole ball valve are greatly improved;
(2) The longitudinal adjusting rod, the transverse adjusting rod and the transverse screw rod for adjusting the lateral buffering device are arranged in the longitudinal adjusting rod, and the buffering stroke and the extrusion force can be freely changed through external control, so that the device can be suitable for pipelines with different internal pressures, the application range is wider, and the adjusting operation is simple and convenient;
(3) An internal thread sealing tube is sleeved on the thread adjusting surface at the outer side of the longitudinal adjusting rod in a threaded manner, so that the external opening of the top control groove can be opened and closed as required, the safety of the control end of the ball valve can be improved, and misoperation caused by external impact is prevented;
(4) The lateral pressure relief pipe of the overhead elastic self-pressure relief cover and the drilling type fixed pressure relief cover is fixed on the outer side surface of the outer valve casing through the lateral assembly seat in a threaded manner, so that the external pressure relief can be facilitated, the valve body is prevented from being damaged under extreme conditions, and the later maintenance is facilitated;
(5) The telescopic fireproof ring controlled by the internal air pressure is arranged on the outer side surface of the ball valve body, so that the tightness of the connecting end can be synchronously improved in the conveying process, and the safety of the valve body is greatly improved by adopting a fireproof design.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural view of the present invention.
Figure 2 is a cross-sectional view of the interior of the outer valve housing of the present invention.
Fig. 3 is a schematic view of the structure of the internal adjusting mechanism in the present invention.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
The low-temperature ball valve with the safety adjustable mechanism is shown in figures 1, 2 and 3, and comprises an outer valve shell 1 and a ball valve body 2, wherein an elongated valve cover 3 is fixedly assembled at the upper end of the outer valve shell 1 through a flange plate, a longitudinal adjusting rod 4 is fixedly connected to the upper end of the ball valve body 2 in the elongated valve cover 3, an internal communication hole 5 is formed in the ball valve body 2, a lateral expansion hole 6 with a built-in lateral buffering device is formed in the outer side surface of the ball valve body 2, and a lateral pressure relief hole 7 communicated with the lateral expansion hole 6 is formed in the inner side surface of the internal communication hole 5.
The longitudinal adjusting rod 4 drives the ball valve body 2 to rotate, then when the internal communication hole 5 in the ball valve body 2 is aligned with openings on two sides, the ball valve is opened, and the lateral buffer device faces the inner wall of the external valve housing 1; when the opening of the inner communication hole 5 inside the ball valve body 2 is aligned with the inner wall of the outer valve housing 1, the ball valve is closed, and the lateral buffering means are aligned with the openings of both ends of the outer valve housing 1. Under normal conditions, the lateral buffer device closes the lateral pressure relief hole.
Further, in order to match with internal adjustment, a built-in adjusting hole communicated with the internal communication hole 5 is formed in the longitudinal adjusting rod 4, an internal adjusting rod 8 is movably assembled in the built-in adjusting hole, a transverse adjusting rod 9 is meshed with the bottom end of the internal adjusting rod 8, and an integral transverse screw 10 for adjusting the lateral buffering device is coaxially fixed at the end, close to the lateral buffering device, of the transverse adjusting rod 9.
The bottom end of the inner adjusting rod 8 and the inner connecting end of the transverse adjusting rod 9 are coaxially fixed with mutually meshed bevel gears.
Further, in order to cooperate with the internal adjustment and the telescopic sealing, the lateral buffer device comprises a top telescopic sealing block 11 movably inserted in the lateral telescopic hole 6, an internal telescopic adjusting block 12 in threaded connection with the transverse screw 10, and an internal compression spring 13 for connecting the top telescopic sealing block 11 with the internal telescopic adjusting block 12.
An arc limiting ring is fixed at the position of the opening of the inner side surface of the lateral expansion hole 6 at the outer side for limiting the outward extension of the top expansion sealing block 11, and an inner limiting block is also fixed on the inner side surface of the lateral expansion hole 6 for limiting the maximum translation length of the inner expansion adjusting block 12.
Further, in order to match with lateral control, a top control groove 14 communicated with the built-in adjusting hole is formed in the top end of the built-in adjusting hole of the outer side face of the longitudinal adjusting rod 4, and a hexagonal control head 15 is coaxially fixed to the top end of the internal adjusting rod 8.
The inner adjusting lever 8 is controlled to rotate by inserting a hexagonal wrench into the top control groove 14 and then rotating the hexagonal control head 15.
Further, for the purpose of matching with the threaded adjustment for opening and closing, the lower end of the top control groove 14 is provided with an integral limiting ring 16 on the outer side of the longitudinal adjustment rod 4, the upper side of the limiting ring 16 is provided with a threaded adjustment surface on the outer side of the longitudinal adjustment rod 4, and the threaded adjustment surface on the outer side of the longitudinal adjustment rod 4 is in threaded sleeve connection with an internal thread sealing tube 17 for closing the top control groove 14.
Further, in order to raise the internal diversion, the lateral pressure relief holes 7 are located at the connecting ends of the internal communication hole 5 and the lateral expansion holes 6, and are provided with tapered guide holes.
Further, in order to cooperate with the lateral pressure relief, the outer side face of the outer valve casing 1 is provided with a lateral assembly seat 18, a lateral pressure relief pipe 19 is fixed in the lateral assembly seat 18 by threads, the top end of the lateral pressure relief pipe 19 is provided with an elastic self-pressure relief cover 20, and the bottom end of the lateral pressure relief pipe 19 is provided with a drilling type fixed pressure relief cover 21.
The pressure relief cover 21 can be fixed by drilling only when the pressure relief is extremely released, or the pressure relief cover 21 can be directly sleeved and fixed on the lateral assembly seat 18.
The side direction assembly seat 18 outside activity is equipped with the internal thread pipe, then have an integral structure external screw thread assembly body outside the side direction pressure release pipe 19, then fix the side direction pressure release pipe 19 in the side direction assembly seat 18 outside through the internal thread pipe screw thread cup joint on the external screw thread assembly body, then elasticity is fixed at side direction pressure release pipe 19 both ends respectively from pressure release cover 20 and the fixed pressure release cover 21 of drilling, elasticity is pegged graft from pressure release cover 20 inside has the telescopic link of longitudinal extension, then coaxial fixed inside closing plate and the outside closing plate in telescopic link both ends, then fixed extrusion spring in inside closing plate, be used for elastic sealing.
Further, in order to prevent inflow of condensed water and improve external safety, the outer side surface of the elongated valve cover 3 is provided with a circular drip plate 22 for preventing inflow of condensed water into the insulating layer.
Further, for mating the lateral fitting connection, the outer walls of the outer valve housing 1 are provided with lateral ducts 23 with external lateral flange fitting discs on both sides.
Further, in order to improve the internal fire resistance, an annular expansion groove 25 with a built-in expansion fireproof ring 24 is formed above the internal communication hole 5 on the outer side surface of the ball valve body 2, a bottom extrusion hole 26 communicated with the internal communication hole 5 is formed in the inner bottom surface of the annular expansion groove 25, and a bottom control shaft 27 protruding towards the inside of the bottom extrusion hole 26 is arranged at the lower end of the expansion fireproof ring 24.
Through during the internal transportation, the inside produces outside pressure, causes the backlog to bottom control shaft 27, drives telescopic fire collar 24 outwards to bulge, is connected with ball valve body 2 interior top surface, can be at the inside end coaxial fixed with round platform shape sealing block of bottom control shaft 27 as required, then set up the sealing mouth with round platform shape sealing block matched with at bottom extrusion hole 26 inside end opening.
According to the low-temperature ball valve with the safety adjustable mechanism, the lateral telescopic hole 6 with the built-in lateral buffer device is formed in the ball valve body 2, the internal communication hole 5 is communicated with the lateral telescopic hole 6 through the lateral pressure relief hole 7, so that the impact of a conveying medium in a pipeline on a pipeline connecting end can be automatically reduced when the valve body is opened and closed, and the safety and durability of the whole ball valve are greatly improved; an internal adjusting rod 8, a transverse adjusting rod 9 and a transverse screw rod 10 for adjusting the lateral buffering device are arranged in the longitudinal adjusting rod 4, and the buffering stroke and the extrusion force can be freely changed through external control, so that the device can be suitable for pipelines with different internal pressures, the application range is wider, and the adjustment operation is simple and convenient; an internal thread sealing pipe 17 is sleeved on the thread adjusting surface on the outer side of the longitudinal adjusting rod 4 in a threaded manner, so that the external opening of the top control groove 14 can be opened and closed as required, the safety of the control end of the ball valve can be improved, and misoperation caused by external impact is prevented; the lateral pressure relief tube 19 of the overhead elastic self-pressure relief cover 20 and the drilling type fixed pressure relief cover 21 is fixed on the outer side surface of the outer valve casing 1 through the lateral assembly seat 18 in a threaded manner, so that the external pressure relief can be facilitated, the valve body is prevented from being damaged in extreme cases, and the later maintenance is facilitated; the outer side surface of the ball valve body 2 is provided with the telescopic fireproof ring 24 controlled by internal air pressure, so that the tightness of the connecting end can be synchronously improved in the conveying process, and the safety of the valve body is greatly improved by adopting a fireproof design.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (7)
1. The utility model provides a low temperature ball valve with security adjustable mechanism, includes outside valve casing (1) and ball valve body (2), characterized by: the ball valve comprises an outer valve housing (1), an extension valve cover (3) is fixedly assembled at the upper end of the outer valve housing (1) through a flange plate, a longitudinal adjusting rod (4) is fixedly connected to the upper end of the ball valve body (2) inside the extension valve cover (3), an inner communicating hole (5) is formed in the ball valve body (2), a lateral expansion hole (6) for internally arranging a lateral buffering device is formed in the outer side surface of the ball valve body (2), a lateral pressure relief hole (7) communicated with the lateral expansion hole (6) is formed in the inner side surface of the inner communicating hole (5), a built-in adjusting hole communicated with the inner communicating hole (5) is formed in the longitudinal adjusting rod (4), an inner adjusting rod (8) is movably assembled inside the built-in adjusting hole, a transverse adjusting rod (9) in which the bottom end of the inner adjusting rod (8) is meshed and is in transmission, a conical gear which is meshed is coaxially fixed at the inner connecting end of the inner adjusting rod (8) bottom end and the inner side of the transverse adjusting rod (9), an integral structure transverse screw (10) for adjusting the lateral buffering device is coaxially fixed near the lateral buffering device end, and comprises a telescopic plug-in top part (11) of the lateral buffering device, and the lateral buffering device comprises a telescopic plug-in sealing block (11) The inner telescopic adjusting block (12) in threaded connection with the transverse screw rod (10) and the inner extrusion spring (13) used for connecting the top telescopic sealing block (11) with the inner telescopic adjusting block (12), the outer side face of the outer valve shell (1) is provided with a lateral assembly seat (18), lateral pressure release pipes (19) are fixed on the inner side of the lateral assembly seat (18) in a threaded manner, the top end of each lateral pressure release pipe (19) is provided with an elastic self-pressure release cover (20), the bottom end of each lateral pressure release pipe (19) is provided with a drilling type fixed pressure release cover (21), an inner threaded pipe is movably assembled on the outer side of the lateral assembly seat (18), then an integral structure outer threaded assembly pipe body is arranged on the outer threaded assembly pipe body in a threaded manner, the lateral pressure release pipes (19) are fixed on the outer side of the lateral assembly seat (18) through the inner threaded pipe in a threaded manner, then the elastic self-pressure release covers (20) and the drilling type fixed pressure release covers (21) are respectively fixed at two ends of the lateral pressure release pipes (19), the elastic self-pressure release covers (20) are inserted into a longitudinal telescopic rod in the inner side, then coaxial rods are fixed at two ends of the inner telescopic rod and two ends of the inner telescopic rod are fixed at the inner side and two ends of the inner telescopic rod and the inner telescopic rod is fixed at two ends of the inner side sealing rod is sealed with the sealing plate, and sealing plate is sealed.
2. The cryogenic ball valve with safety adjustable mechanism of claim 1, wherein: the top control groove (14) communicated with the built-in adjusting hole is formed in the top end of the built-in adjusting hole of the outer side face of the longitudinal adjusting rod (4), and the hexagonal control head (15) is coaxially fixed to the top end of the inner adjusting rod (8).
3. The cryogenic ball valve with safety adjustable mechanism of claim 2, wherein: the outside of the longitudinal adjusting rod (4) is positioned at the lower end of the top control groove (14) and is provided with an integral structure limiting ring (16), the outside surface of the longitudinal adjusting rod (4) is positioned above the limiting ring (16) and is provided with a threaded adjusting surface, and an internal thread sealing tube (17) for closing the top control groove (14) is sleeved on the threaded adjusting surface on the outside of the longitudinal adjusting rod (4) in a threaded manner.
4. The cryogenic ball valve with safety adjustable mechanism of claim 1, wherein: the lateral pressure relief holes (7) are positioned at the connecting ends of the internal communication hole (5) and the lateral telescopic holes (6) and are provided with conical guide holes.
5. The cryogenic ball valve with safety adjustable mechanism of claim 1, wherein: the outer side surface of the lengthened valve cover (3) is provided with a round drip plate (22) for preventing condensed water from flowing into the heat insulation layer.
6. The cryogenic ball valve with safety adjustable mechanism of claim 1, wherein: the outer walls of the two sides of the outer valve casing (1) are provided with lateral conveying pipes (23) with external lateral flange assembling plates.
7. The cryogenic ball valve with safety adjustable mechanism of claim 1, wherein: the ball valve is characterized in that an annular telescopic groove (25) with a built-in telescopic fireproof ring (24) is formed in the position, above the inner communication hole (5), of the outer side face of the ball valve body (2), a bottom extrusion hole (26) communicated with the inner communication hole (5) is formed in the inner bottom face of the annular telescopic groove (25), and a bottom control shaft (27) protruding towards the inside of the bottom extrusion hole (26) is arranged at the lower end of the telescopic fireproof ring (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110712207.1A CN113503372B (en) | 2021-06-25 | 2021-06-25 | Low-temperature ball valve with safety adjustable mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110712207.1A CN113503372B (en) | 2021-06-25 | 2021-06-25 | Low-temperature ball valve with safety adjustable mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113503372A CN113503372A (en) | 2021-10-15 |
| CN113503372B true CN113503372B (en) | 2023-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110712207.1A Active CN113503372B (en) | 2021-06-25 | 2021-06-25 | Low-temperature ball valve with safety adjustable mechanism |
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| CN (1) | CN113503372B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829212A (en) * | 2012-08-20 | 2012-12-19 | 天津祥嘉流体控制***有限公司 | Ultra-low temperature ball valve |
| CN105422897A (en) * | 2015-11-30 | 2016-03-23 | 大丰市奥凯流体机械有限公司 | Ultra-low temperature ball valve |
| CN107542943A (en) * | 2016-06-28 | 2018-01-05 | 夏正光 | Ultra-low temperature ball valve |
| CN108775413A (en) * | 2018-06-12 | 2018-11-09 | 安徽方程式工业设计服务有限公司 | A kind of ball valve for capableing of pressure release in advance |
| CN212251254U (en) * | 2020-01-16 | 2020-12-29 | 扬中市通发实业有限公司 | Ultra-low temperature ball valve |
| CN111503308A (en) * | 2020-04-30 | 2020-08-07 | 刘艳荣 | Low-torque ball valve capable of adjusting flow |
| CN112049957B (en) * | 2020-09-03 | 2022-04-22 | 江苏亿阀股份有限公司 | Ultralow-temperature upper-mounted inclined fixed ball valve capable of resisting burning and rapid assembly method thereof |
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2021
- 2021-06-25 CN CN202110712207.1A patent/CN113503372B/en active Active
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| CN113503372A (en) | 2021-10-15 |
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