CN207584069U

CN207584069U - Valve

Info

Publication number: CN207584069U
Application number: CN201721467995.8U
Authority: CN
Inventors: 魏燕生
Original assignee: Beijing Dasheng Silver Bright Steel Processing Plant
Current assignee: Beijing Dasheng Silver Bright Steel Processing Plant
Priority date: 2017-11-06
Filing date: 2017-11-06
Publication date: 2018-07-06
Anticipated expiration: 2027-11-06

Abstract

The utility model discloses a kind of valves, are related to valve technology field, including at least a main valve, are set on the side link arm of the main valve there are one a releasing device is respectively provided on releasing device or both sides link arm, the releasing device is connected with main valve；The releasing device is from top to bottom followed successively by diffusion valve, desorption tube, diffuses interface, between the diffusion valve and desorption tube and desorption tube and diffusing is connected by an electric melting sleeve between interface, the interface that diffuses is integrally formed and connects with the link arm of main valve, described diffuse is equipped with a sealing device in interface, the sealing device includes an embedded casing and a movable sealing plug.The utility model in order to solve the problems, such as ball valve that existing band diffuses for releasing device without self-test sealing performance function, propose a kind of there is that self-test sealing performance and being blocked when without using bleeding device diffused interface diffuses ball valve for releasing device.

Description

Valve

Technical field

The utility model is related to valve technology fields more particularly to a kind of with the PE valves diffused.

Background technology

In gas ductwork, PE ball valves play the on-off action in pipe gas transmission process, and running pipeline usually needs The fuel gas transmission in downstream is controlled by the switch of valve.PE valves have it is corrosion-resistant, non-maintaining, open and close that torque is small, valve The advantages that light-weight, in installation, and has convenient in carrying, welds the advantages such as simple.Common PE ball valves have common PE Ball valve, PE are mono- to diffuse ball valve and PE double-diffusing ball valves.Existing PE double-diffusing ball valves can be found in following patent：Patent name is " double block double-diffusing ball valve ", Authorization Notice No. CN202719177U, authorized announcement date are on 2 6th, 2013.In ball valve two Side respectively sets a bleeding device and the bleeding device is connected with ball valve body inner cavity, can be not only used for ball valve pressure release, it is also possible to Branch is drawn in pipeline.Since bleeding device is assembled by multiple parts weldings, weld has in the presence of the possibility leaked, so ball It is both needed to detect by sealing performance before valve manufacture and before installation, it is ensured that safety during use, still, existing PE is bis- to be diffused Ball valve if you need to detect, then needs by customizing special equipment, this not only will mechanism of the bleeding device without included detection leakage Larger device fabrication expense is generated, also, is gone with a small amount of equipment to detect a large amount of ball valve, efficiency is more low.

Utility model content

The utility model in order to solve ball valve that existing band diffuses for releasing device without self-test sealing performance function The problem of, propose that a kind of releasing device that is directed to has the function of self-test sealing performance and can block when without using bleeding device to put Dissipate interface diffuses ball valve.

To achieve these goals, the utility model uses following technical scheme：A kind of valve, including at least a master Valve is set on the side link arm of the main valve there are one being respectively provided with a releasing device on releasing device or both sides link arm, described to put Mechanism is dissipated with main valve to be connected；The releasing device is from top to bottom followed successively by diffusion valve, desorption tube, diffuses interface, described to diffuse Between valve and desorption tube and desorption tube and diffusing is connected by an electric melting sleeve between interface, described to diffuse interface and master The link arm of valve is integrally formed and connects, and described diffuse is equipped with a sealing device in interface, the sealing device is nested with including one Guan Yuyi movable sealing plugs, the outer wall of the embedded casing and the inner wall sealing cooperation for diffusing interface embed the endoporus point of casing For internal thread segment and smooth section, internal thread segment is located on the upside of smooth section and the diameter of internal thread segment is less than the diameter of smooth section；Institute It states movable sealing plug and is divided into external thread section and seal section, external thread section is located on the upside of seal section；In a tubular form, inside is external thread section Pore, outer wall is equipped with external screw thread, and several through-holes are offered on the tube wall of external thread section；The external thread section of the movable sealing plug It is screwed togather with the internal thread segment of the embedded casing, the seal section can switch slip between main valve inner cavity and smooth section and can be with Smooth section realizes sealing.

Preferably, the seal section is cylindrical, the central axis of seal section is overlapped with the central axis of external thread section, Seal section outer wall is circumferentially equipped at least one sealing ring locating slot, and O-ring seal is equipped in the sealing ring locating slot.

Preferably, the seal section outer wall is circumferentially equipped with two sealing ring locating slots, two sealing ring locating slot institutes Plane with seal section central axis upright.

Preferably, the seal section bottom is set, there are one the interior hexagonal grooves that can coordinate with allen wrench.

Preferably, internal thread is equipped at diffusion valve upper end opening on the releasing device；The seal section upper end is set There are one polygonal grooves；The sealing device further includes a dismountable sealing-plug lead agency, and the sealing-plug drives Mechanism includes a fixing seal seat and a rotating bar, and being equipped on the outside of the fixing seal seat can be with the screw-internal thread fit on diffusion valve External screw thread, inside is equipped with through hole along central axis, sealing ring is coaxially provided in the through hole, and the rotating bar passes through solid Determine the through hole on seal receptacle and seal with fixing seal seat to coordinate, the rotating bar can be slided along the through hole on fixing seal seat Dynamic and rotation；The rotating bar lower end is equipped with the polygon that can be plugged together with seal section upper end polygonal grooves and starts.

Preferably, the fixing seal seat is equipped with for the sealing ring with diffusion valve realization sealing suitable for reading.

Preferably, the rotating bar upper end is equipped with the spanner for twisting rotating bar.

Preferably, the external thread section inner wall of the movable sealing plug is equipped with filter layer.

Therefore, the utility model has the advantages that：1st, sealing device, Neng Gouyong are equipped in the releasing device of ball valve In the leakproofness of self-test releasing device；2nd, when ball valve is without using bleeding device, sealing device can be used to block for a long time and diffused Interface further ensures that combustion gas will not be leaked from bleeding device；3rd, dismountable sealing-plug lead agency is provided with, can be assisted Sealing device is sealed test and may be reused.

Description of the drawings

Fig. 1 is the schematic diagram that the utility model list diffuses ball valve.

Fig. 2 is the schematic diagram of the utility model double-diffusing ball valve.

Fig. 3 is the vertical view of Fig. 2.

Fig. 4 is the enlarged diagram at a in Fig. 1 or Fig. 2.

Fig. 5 is the enlarged diagram at c in Fig. 4.

Fig. 6 is the structure diagram that casing is embedded in the utility model.

Fig. 7 is the structure diagram of movable sealing plug in the utility model.

Fig. 8 is the enlarged diagram at b in Fig. 1 or Fig. 2.

Fig. 9 is the front view of sealing-plug lead agency in the utility model.

Figure 10 is the schematic diagram that the utility model is sealed test mode using sealing-plug lead agency.

Figure 11 is that the utility model embeds the enlarged diagram that casing realizes sealing state with movable sealing plug.

1：Main valve；101：Link arm；2：Releasing device；201：Diffusion valve；202：Desorption tube；203：Diffuse interface；204：It is interior Screw thread；3：Electric melting sleeve；4：Sealing device；401：Embedded casing；402：Movable sealing plug；403：Internal thread segment；404：It is smooth Section；405：External thread section；406：Seal section；407：Through-hole；408：O-ring seal；409：Interior hexagonal groove；410：Polygon is recessed Slot；411：Filter layer；5：Sealing-plug lead agency；501：Fixing seal seat；502：Rotating bar；503：Through hole；504：Outer spiral shell Line；505：Sealing ring；506：Polygon is started；507：Spanner.

Specific embodiment

The utility model is further described with specific embodiment below in conjunction with the accompanying drawings.

Embodiment one：

A kind of valve, the valve is singly diffuses ball valve, and referring to Fig. 1, including at least a main valve 1,1 both sides of main valve are Link arm 101 is set on 1 side link arm 101 of main valve there are one releasing device 2, and the releasing device 2 is connected with main valve 1；It is described to put It dissipates mechanism 2 to be from top to bottom followed successively by diffusion valve 201, desorption tube 202, diffuse interface 203, the diffusion valve 201 and desorption tube 202 Between and desorption tube 202 and diffusing connected by an electric melting sleeve 6 between interface 203, it is described diffuse interface 203 with it is main The link arm of valve 1 is integrally formed and connects, and described diffuse is equipped with a sealing device 4 in interface 203, as shown in Figure 4, Figure 5, described close Seal apparatus 4 includes an embedded 401 and one movable sealing plug 402 of casing, and the outer wall of the embedded casing 401 is with diffusing interface 203 Inner wall sealing cooperation, the endoporus of embedded casing 401 is divided into internal thread segment 403 and smooth section 404, as shown in fig. 6, internal thread segment 403 diameter positioned at 404 upside of smooth section and internal thread segment 403 is less than the diameter of smooth section 404；The movable sealing plug 402 It is divided into external thread section 405 and seal section 406, as shown in fig. 7, external thread section 405 is located at 406 upside of seal section；External thread section 405 In a tubular form, internal is pore, and outer wall is equipped with external screw thread, and several through-holes 407 are offered on the tube wall of external thread section 405, described Filter layer 411 is additionally provided on 405 inner wall of external thread section of movable sealing plug 402, through-hole 407 is for inside and outside movable sealing plug 402 Gas connection, the filter layer 411 on inner wall is for the impurity in gas inside and outside filtering activities sealing-plug 402；The movable sealing The external thread section 405 and the internal thread segment 403 of the embedded casing 401 of plug 402 screw togather, and the seal section 406 can be in main valve 1 Switching is slided and can be realized with smooth section 404 and sealed between chamber and smooth section 404.

The seal section 406 is cylindrical, and the central axis of seal section 406 is overlapped with the central axis of external thread section 405, 406 outer wall of seal section is circumferentially equipped with two sealing ring locating slots, and O-ring seal 408 is equipped in the sealing ring locating slot, As shown in fig. 7,406 bottom of seal section is set there are one the interior hexagonal groove 409 that can coordinate with allen wrench, upper end is equipped with One polygonal grooves 410.Operating personnel can stretch into hand in 1 channel of main valve, pass through mating allen wrench and seal section The interior hexagonal groove 409 of 406 bottoms plugs together, rotary moveable sealing-plug 402.

Internal thread 204 is equipped at 201 upper end opening of diffusion valve on the releasing device 2, as shown in figure 8, the sealing Device 4 further includes a dismountable sealing-plug lead agency 5, consolidates as shown in figure 9, the sealing-plug lead agency 5 includes one Determine 501 and one rotating bar 502 of seal receptacle, the fixing seal seat 501 is in up big and down small ladder shaft-like, and shaft section is in T shape, The external screw thread 504 that can coordinate with the internal thread 204 on diffusion valve is equipped on the outside of the small column of downside, interface is equipped with for putting The valve sealing ring 505 suitable for reading for realizing sealing is dissipated, 501 inside of fixing seal seat is equipped with through hole 503 along central axis, described to run through Sealing ring is coaxially provided in hole 503, the rotating bar 502 passes through through hole 503 and and fixing seal on fixing seal seat 501 501 sealing cooperation of seat, the rotating bar 502 can be slided and be rotated along the through hole 503 on fixing seal seat 501；The rotation 502 lower end of bar is equipped with the polygon that can be plugged together with 406 upper end polygonal grooves 410 of seal section and starts 506, and upper end is equipped with to turn round The spanner 507 of turn lever 502.

Embodiment two：

A kind of valve, which is double-diffusing ball valve, referring to Fig. 2, Fig. 3, including at least a main valve 1,1 liang of the main valve Side is link arm 101, is respectively provided with a releasing device 2 on 1 both sides link arm 101 of main valve, the releasing device 2 is connected with main valve 1； The releasing device 2 is from top to bottom followed successively by diffusion valve 201, desorption tube 202, diffuses interface 203, and the diffusion valve 201 is with putting Between separate tube 202 and desorption tube 202 and diffusing is connected by an electric melting sleeve 6 between interface 203, described to diffuse interface 203 are integrally formed and connect with the link arm of main valve 1, and two diffusing for releasing device 2 are respectively provided with a sealing device 4 in interface 203, The sealing device 4 includes an embedded 401 and one movable sealing plug 402 of casing, and the outer wall of the embedded casing 401 connects with diffusing The inner wall sealing cooperation of mouth 203, the endoporus of embedded casing 401 are divided into internal thread segment 403 and smooth section 404, internal thread segment 403 Diameter in 404 upside of smooth section and internal thread segment 403 is less than the diameter of smooth section 404；It is outer that the movable sealing plug 402, which divides, Thread segment 405 and seal section 406, external thread section 405 are located at 406 upside of seal section；In a tubular form, inside is pipe to external thread section 405 Hole, outer wall is equipped with external screw thread, and several through-holes 407 are offered on the tube wall of external thread section 405, the movable sealing plug 402 It is additionally provided with filter layer 411 on 405 inner wall of external thread section, through-hole 407 is for gas connection inside and outside movable sealing plug 402, on inner wall Filter layer 411 for the impurity in gas inside and outside filtering activities sealing-plug 402；The external thread section of the movable sealing plug 402 405 screw togather with the internal thread segment 403 of the embedded casing 401, the seal section 406 can 1 inner cavity of main valve and smooth section 404 it Between switching slide and can with smooth section 404 realize sealing.

The seal section 406 is cylindrical, and the central axis of seal section 406 is overlapped with the central axis of external thread section 405, 406 outer wall of seal section is circumferentially equipped with two sealing ring locating slots, and O-ring seal 408 is equipped in the sealing ring locating slot, As shown in fig. 6,406 bottom of seal section is set there are one the interior hexagonal groove 409 that can coordinate with allen wrench, upper end is equipped with One polygonal grooves 410.Operating personnel can stretch into hand in 1 channel of main valve, pass through mating allen wrench and seal section The interior hexagonal groove 409 of 406 bottoms plugs together, rotary moveable sealing-plug 402.

Internal thread 204 is equipped at 201 upper end opening of diffusion valve on the releasing device 2, the sealing device 4 also wraps A dismountable sealing-plug lead agency 5 is included, the sealing-plug lead agency 5 includes a fixing seal seat 501 and a rotation Bar 502, the fixing seal seat 501 are in up big and down small ladder shaft-like, and shaft section is in T shape, are equipped on the outside of the small column of downside The external screw thread 504 that can coordinate with the internal thread 204 on diffusion valve, interface are equipped with to seal with diffusion valve realization suitable for reading Sealing ring 505,501 inside of fixing seal seat are equipped with through hole 503 along central axis, are coaxially provided in the through hole 503 close Seal, the rotating bar 502, which passes through the through hole 503 on fixing seal seat 501 and sealed with fixing seal seat 501, to be coordinated, institute Stating rotating bar 502 can slide and rotate along the through hole 503 on fixing seal seat 501；502 lower end of rotating bar is equipped with can be with The polygon that 406 upper end polygonal grooves 410 of seal section plug together starts 506, and upper end is equipped with the spanner for twisting rotating bar 502 507。

For above-mentioned two embodiment, the utility model can carry out following experiments of sealing performance：

A. valve can carry out the self-checking of following sealing performance before installing and using：Close diffusion valve 201, operator Member stretches into hand in 1 channel of main valve, passes through in 406 bottom of seal section in mating allen wrench and releasing device 2 six Angle groove 409 plugs together, rotary moveable sealing-plug 402, and the rotation of movable sealing plug 402 rises, when the seal section of movable sealing plug 402 After 406 enter the smooth section 404 of embedded casing 401, sealing is realized between seal section 406 and smooth section 404, as shown in figure 11, Movable sealing plug 402 continues to rise, and 2 inner chamber gas of releasing device of 406 upside of seal section is squeezed, and atmospheric pressure value becomes larger, and can The atmospheric pressure value of intracavitary in releasing device 2 is controlled by the lifting position for adjusting movable sealing plug 402.Activity of then stopping rotating is close Blocking 402 stands pressurize for a period of time, then goes to open diffusion valve 201, if still there is larger air-flow intracavitary out of releasing device 2 Outflow then illustrates the parts welding No leakage on releasing device 2；, whereas if opening diffusion valve 201, airless is from diffusing Intracavitary flows out in mechanism 2, then illustrates the parts weld or a certain parts itself on the communicating pipe 4 on releasing device 2 There are leakage points；

B. valve after installation is complete, can carry out the self-checking of following sealing performance：Open diffusion valve 201；Operator Member stretches into the rotating bar 502 of sealing-plug lead agency 5 at 201 upper end opening of diffusion valve, until 502 lower end of rotating bar is more Side shape is started 506 to be plugged together with the polygonal grooves 410 of 2 interior sealing section of releasing device, 406 upper end, then by the sealing-plug lead agency External screw thread 504 on 5 fixing seal seat 501 is screwed togather fixed and is realized close with the internal thread 204 at 201 upper end opening of diffusion valve Envelope, as shown in Figure 10.Then rotating bar 502 is twisted by shaking spanner 507, movable sealing plug 402 is revolved with rotating bar 502 Turn, the rotation of movable sealing plug 402 rises, when the seal section 406 of movable sealing plug 402 enters the smooth section 404 of embedded casing 401 Afterwards, sealing is realized between seal section 406 and smooth section 404, movable sealing plug 402 continues to rise, and 406 upside of seal section is diffused The gas of intracavitary is squeezed in mechanism 2, and atmospheric pressure value becomes larger, and can be put by adjusting the lifting position control of movable sealing plug 402 Dissipate the atmospheric pressure value of intracavitary in mechanism 2.Then stop rotating movable sealing plug 402, stands pressurize for a period of time, then remove Unscrew Fixing seal seat 501 if still there is larger air-flow intracavitary out of releasing device 2 to flow out, illustrates the parts in releasing device 2 Weld No leakage；, whereas if opening fixing seal seat 501, airless intracavitary out of releasing device 2 flows out, then explanation is diffused There are leakage points for parts weld or a certain parts itself in mechanism 2.

Claims

1. a kind of valve, including at least a main valve, set that there are one releasing devices or both sides to connect on the side link arm of the main valve A releasing device is respectively provided on arm, the releasing device is connected with main valve；The releasing device, which is from top to bottom followed successively by, to be put It dissipates valve, desorption tube, diffuse interface, between the diffusion valve and desorption tube and desorption tube and diffuse between interface by one Electric melting sleeve connects, and the interface that diffuses is integrally formed and connects with the link arm of main valve, it is characterised in that：It is described to diffuse in interface Equipped with a sealing device, the sealing device include an embedded casing and a movable sealing plug, the outer wall of the embedded casing and The inner wall sealing cooperation of interface is diffused, the endoporus of embedded casing is divided into internal thread segment and smooth section, and internal thread segment is located at smooth section （404）The diameter of upside and internal thread segment is less than the diameter of smooth section；The movable sealing plug is divided into external thread section and seal section, External thread section is located on the upside of seal section；In a tubular form, for pore, outer wall is equipped with external screw thread to external thread section for inside, and external thread section Several through-holes are offered on tube wall；The external thread section of the movable sealing plug and the internal thread segment of the embedded casing screw togather, institute Slip can be switched between main valve inner cavity and smooth section and can realize sealing with smooth section by stating seal section.

2. valve according to claim 1, it is characterised in that：The seal section is cylindrical, the central axis of seal section It is overlapped with the central axis of external thread section, seal section outer wall is circumferentially equipped at least one sealing ring locating slot, the sealing ring O-ring seal is equipped in locating slot.

3. valve according to claim 2, it is characterised in that：The seal section outer wall is circumferentially equipped with two sealing delineations Position slot, planes where two sealing ring locating slots with seal section central axis upright.

4. valve according to claim 1, it is characterised in that：The seal section bottom is set there are one can be with allen wrench The interior hexagonal groove of cooperation.