CN1762512A

CN1762512A - Vane type flow detector

Info

Publication number: CN1762512A
Application number: CNA200510077535XA
Authority: CN
Inventors: 宫本勝広
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-11-14
Filing date: 2002-11-14
Publication date: 2006-04-26
Also published as: TWI238072B; JP2003149021A; JP3560948B2; CN1419108A; TW200300356A; CN1267731C; KR20030040155A

Abstract

The present invention provides a paddle-type water-flow detection device that is capable of being easily reduced in size relative to the pipe axis direction as compared with a conventional device. The device includes a check valve for enabling inflow of water only from its primary side to its secondary side, and a paddle-type running-water detection part for detecting running water through rotational motion of a paddle upon receiving pressure from said running water, in which said paddle is located on the primary side of the check valve.

Description

Vane type flow detector

Technical field

The present invention relates to a kind of dry type that is used for sprinkler, spraying apparatus and foam annihilator etc., wet type, the flow detector of actuating type etc. in advance, especially a kind of vane type flow detector that uses blade.

Background technology

In general, in automatic fire sprinkler, whether discharge water, therefore will be equipped with flow detector the water supply piping of automatic fire sprinkler from fountain head owing to must measure.In this flow detector, there are auto-alarm-signal keying device valve type, flowing water starter gate valve type and blade type, with regard to the cost aspect, the vane type flow detector of configuration blade is favourable in water supply piping.For this device, the current that bear fire extinguishing water by blade start, thereby measure the flowing water of fire extinguishing water and export the flowing water signal, and alarm device is accepted just to give the alarm behind this flowing water signal.

With reference to Fig. 5 an example of this vane type flow detector is described.This flow detector 100 is equipped between the pipe arrangement 102 of the pipe arrangement 101 of water inlet end and water side, and intake this moment end and water side portion have flange part 103,104 respectively, thereby are connected with each pipe arrangement 103,104 along tube axial direction by bolt.

Inscape as this device comprises: by the rotating operation of handle 105, switching manually is used for supplying water and the control valve 106 that stops to supply water to the water side from water inlet end; The check-valves 107 that only allows water to flow to the water side from water inlet end; And, detect the vane type flow test section 108 of flowing water to the rotation of water side by blade 109 bearing from water inlet end during to the flowing water pressure of water side.

The handle 105 of control valve 106, the state of representing with solid line is corresponding to the open mode of valve, the state of representing with double dot dash line is then corresponding to the closed condition of valve, can carry out the switching change action of valve by the rotating operations of 90 degree roughly, usually, solid line represents that valve is in the state of opening, and fire extinguishing water is in the state that flows to the water side.In addition, the blade 109 of vane type flow test section 108 shown in Fig. 5 (B), is seen as close with pipe arrangement area size tongue-shaped and be disposed on the center line of pipe along tube axial direction.

And, during fire extinguishing, for example under the situation of wet type, follow the water side pressure that is caused that discharges water of the fire extinguishing water of water side to reduce, check-valves 107 is owing to become open mode by the pressure extrusion of water inlet end, thereby makes fire extinguishing water mobile to the water side from water inlet end.Blade 109 bears this flowing water pressure and rotates with predetermined angular in the water side, and vane type flow test section 108 sends the flowing water signal.

Summary of the invention

Yet always employed vane type flow detector mainly due to following reason, exists to be difficult to the problem of device along the compact in size of tube axial direction.

At first because it is a kind of structure of the water side configuration blade 109 at check-valves 107, check-valves 107 can not with vane type flow test section 108 near configuration.Near the water side of check-valves 107, because therefore turbulization, in order to ensure the operating stably of flowing water test section 108, must dispose blade 109 under distance check-valves 107 rectification enough far away.In general, 109 the distance that the position is set from check-valves 107 to blade, requirement for example is roughly 4 times and even 10 times of pipe diameter.

Have, because the necessary arranged in series of each inscape, as a whole, the length that shortens tube axial direction just is not easy again.

Therefore, the problem that the present invention exists in view of above-mentioned prior art, its problem provide a kind of compared with prior art can be easily with the vane type flow detector of tube axial direction compact in size.

The present invention is the invention of finishing in order to solve above-mentioned problem, said vane type flow detector among the present invention, and it comprises: the check-valves that is used for only allowing water to flow to the water side from water inlet end; And when bearing flowing water pressure, detect the vane type flow test section of flowing water by the rotation of blade, and it is characterized in that, dispose blade at the water inlet end of check-valves.

Because the water inlet end and the water side of check-valves are in a ratio of rectification, so can be so that blade starts under the rectification condition at water inlet end configuration blade.

In addition, as check-valves, wish to use the check-valves of butterfly, the left and right sides valve body that roughly is semicircle shape in this butterfly shaped check valve, one of them can be opened than the low hydraulic pressure of another one utilization and constitute, and in the water inlet end of the valve body that low hydraulic pressure with this is opened, blade preferably is provided with prejudicially.

At this moment, be provided with, can use with the pipe arrangement area and be in a ratio of small-sized blade because blade is eccentric, thus with blade arrangement in pipe arrangement, like this, the loss that can reduce pressure compared with the past.

Wish that particularly the rotating fulcrum of blade is arranged at the outside of the another one valve body of butterfly shaped check valve, its blade comprises: the flowing water compression zone, and it is positioned at the water inlet end of one of them valve body of butterfly shaped check valve, is used to bear flowing water pressure; And cantilever, it is used for connecting flowing water compression zone and rotating fulcrum than this flowing water compression zone narrow width.

At this moment, owing to compare with the situation of the arranged outside blade rotation fulcrum of a valve body therein, the length of cantilever increases, and can more accurately detect flowing water.

Also have, wish the direction that blade intersects along the rotation fulcrum approximate vertical with the valve body of butterfly shaped check valve and be disposed on the center line of butterfly shaped check valve, thus, can detect flowing water more effectively.

Particularly, it is fan-shaped that the flowing water compression zone of wishing blade is with the front end of cantilever that the center is, and not only can suppress the loss of pressure in view of the above effectively, can also more effectively detect flowing water.

In addition, the vane type flow detector that the present invention is correlated with, it comprises: the vane type flow test section that detects flowing water when bearing flowing water pressure by the rotation of blade; Be used to switch to the water side and supply water and the control valve that stops to supply water, as this control valve use is the globe valve that carries out the switching of valve by the rotation of spherical valve body, it is characterized in that, blade arrangement detects flowing water in the spherical valve body internal flow path of flowing through with blade when valve body is opened in the set internal flow path of spherical valve body.

Description of drawings

What Fig. 1 represented is the sectional drawing of the flow detector of the 1st embodiment of the present invention.

Fig. 2 is the sectional drawing that comprises a part of section line of the flow detector of representing the 2nd embodiment of the present invention.

What Fig. 3 represented is the view of same device along the tube axial direction water side.

Fig. 4 is the sectional drawing that comprises a part of section line of the flow detector of representing the present invention's the 3rd embodiment.

What Fig. 5 represented is traditional flow detector, (A) is the view along tube axial direction, (B) is front view.

Symbol description

1 vane type flow test section

2 rocker-arm check-valves

10 blades

10a flowing water compression zone

The 10b rotating fulcrum

The 10c cantilever

40 butterfly shaped check valves

41,42 valve bodies

50 globe valves (control valve)

51 spherical valve bodies

56 main apertures (internal flow path) 57

57 secondary holes

The specific embodiment

Followingly an embodiment of the invention are described with reference to drawing.

What Fig. 1 represented is the flow detector of said the 1st embodiment among the present invention, this device is at water inlet end configuration vane type flow test section 1, and constitute at water side configuration check-valves, be provided with according to the mode that is held along tube axial direction between the pipe arrangement 3 of water inlet end and the pipe arrangement 4 of water side.To narrate in the back about this installation method.

At first, vane type flow test section 1 has: bear flowing water pressure and rotating blades 10 and detect flowing water and export the test section 11 of flowing water signal by the rotation of blade 10.10 in blade has: bear flowing water pressure flowing water compression zone 10a, connect the cantilever 10c between this flowing water compression zone 10a and the rotating fulcrum 10b.Flowing water compression zone 10a sees and has the area close with the pipe arrangement area that from tube axial direction it is disposed on the center line of pipe arrangement roughly rounded.In addition, blade 10, in the sealing state, as shown in Figure 1 at the angle offset of water inlet end with regulation, bear flowing water pressure from this state by flowing water compression zone 10a, make and work as blade 10 angular turn with regulation to the water side in a single day, test section 11 will be measured this information and export the flowing water signal to not shown alarm device.

Be disposed at the check-valves of the water side of this blade 10, promptly so-called rocker-arm check-valves 2.This rocker-arm check-valves 2 is provided with: water inlet end opening 20 and the roughly linearly setting of water side opening 21, and have the valve body 23 of being located at the valve chamber 22 between two

openings

20,21; And by open the valve body 25 that is supported by main shaft 24 like that and can rotate along the direction of arrow to the flowing water pressure of water side from water inlet end.This main shaft 24 is fixed on the valve body 23, and valve body 25 rotates around main shaft 24.And valve body 23 has along tube axial direction from valve seat 26 to the ingress pipe portion 27 that water inlet end opening 20 extends with specific length, the above-mentioned blade 10 of configuration in this ingress pipe portion 27.

About the flow detector of above structure, owing to dispose blade 10 at the water inlet end of rocker-arm check-valves 2, so can be under the rectification condition so that blade 10 starts.Therefore, with blade arrangement is compared in the structure of water side in the past, the size of flow detector along tube axial direction can be shortened greatly.

Also have, below the arrangement method of explanation flow detector.This flow detector, water inlet end opening 20, water side opening 21 do not have flange part, and promptly so-called substrate-type structure is utilized between above-mentioned two pipe arrangements 3,4 that are clamped in water inlet end, water side thus and the installation method that is fixed sets.Specifically, pipe end at water inlet end, water side two pipe arrangements 3,4 is provided with

flange part

3a, 4a, these two

flange part

3a, 4a connect by a plurality of bolts 28 and with predetermined distance it are separated, and insert flow detector by liner 29 between two flange part 3a, the 4a.In addition, reduce the interval between two flange part 3a, the 4a, and flow detector is clamped along tube axial direction with two flange part 3a, 4a.So can be connected with pipe arrangement at an easy rate.On the contrary, under the situation that when maintenance and replacing, needs flow detector is taken off, only need by two flange parts are just drawn back mutually and can at an easy rate it be taken off.

In the present embodiment, adopt the inside and outside double nuts structure that on the basis of common outer nut 30, also uses inner nut 31.That is,, inner nut 31 then is set, combines with bolt 28 screw threads of regulation in

flange part

3a, 4a inboard at

flange part

3a, 4a arranged outside outer nut 30.Inner nut 31 needn't be arranged on all bolts 28, for example, if four bolts 28 then only need be arranged on its diagonal two and go up and get final product, in addition, is under the situation of 8 bolts, then only need be arranged at two of separating with 180 degree and upward get final product.

At first, on its per 1 screw thread is passed through between two

flange part

3a, 4a in conjunction with the bolt 28 of a pair of inner nut 31, operate this a pair of inner nut 31 and make it disconnected from each other, thereby the spacing distance between two

flange part

3a, 4a is increased, insert flow detector this moment.Then, make a pair of inner nut 31 near each other, with two

flange part

3a, 4a clamping device, the outer nut 30 of screwing on is at last realized being completely fixed.So, adopt by the tightening expansion that loose operations regulates the spacing distance between two

flange part

3a, 4a and dwindle of inner nut 31, thereby will install, can make the discrepancy of device extremely easy like this from the method for coming in and going out between two flange part 3a, the 4a.And device inserts the back can be further strong with stationary state by outer nut 30.

Also have in Fig. 1, the position of bolt is than the actual outside that is depicted in more.

Next said flow detector in the 2nd embodiment of the present invention is described.But, for same structure, invest identical symbol to it, will omit its detailed explanation.

Said flow detector in the 2nd embodiment shown in Figure 2, the check-valves 40 of employing butterfly replaces the rocker-arm check-valves 2 of the 1st embodiment.

Butterfly shaped check valve 40 possesses the

valve body

41,42 that pair of right and left roughly is semicircle shape as shown in Figure 3, and this left and right

sides valve body

41,42 that is called disk again is that the center rotation constitutes with the common rotation fulcrum 43 that is disposed on butterfly shaped check valve 40 center lines.And

valve body

41,42 by means of as the spring 45 of hold down gag and to closing a side compression, if bear from the flowing water pressure of water inlet end to the water side, is resisted this thrust and is left and rotate to the water side from valve seat 26.

In general, roughly the same to the thrust left and right sides of

valve body

41,42 in this butterfly shaped check valve 40, thus, when bearing flowing water pressure, left and right

sides valve body

41,42 can rotate to opening a side roughly the samely.

With respect to this, in the butterfly shaped check valve 40 of present embodiment, for one of them valve body 41 easier than another one valve body 42 to opening the structure that a side is rotated.Specifically, towards paper, the valve body 41 on right side is than valve body 42 easier the opening in left side among Fig. 2.So, than the structure that the low flowing water pressure of the easier usefulness of another one is opened, for example, the structure that difference is set is arranged as one of them on the weight of left and right

sides valve body

41,42; With the structure that difference is set on the thrust of spring 45 grades.That is, can open with low flowing water pressure lighter valve body and the less valve body of thrust.

And, identical with the 1st embodiment, though in the present embodiment also with the water inlet end of blade arrangement in butterfly shaped check valve 40, in the present embodiment, on the water inlet end of the valve body 41 that blade 10 is disposed at prejudicially more easily open.More particularly, as shown in Figure 3, when the direction that blade 10 intersects along rotation fulcrum 43 approximate vertical with

valve body

41,42 disposes, be configured on the center line of butterfly shaped check valve 40.In addition, the rotating fulcrum 10b of blade 10 is disposed at the outside of the another one valve body of being opened by bigger flowing water pressure 42, this another one valve body 42 is cross-section by the cantilever 10c narrower than flowing water compression zone 10a width, and it is the fan-shaped flowing water compression zone 10a at center that the front end of this cantilever 10c is provided with this front end.That is, flowing water compression zone 10a is almost across whole zone, overlaps along tube axial direction with one of them valve body 41.Also have, the central angle of flowing water compression zone 10a is approximately 90 degree.In addition, as shown in Figure 2, for the thickness of tube axial direction, flowing water compression zone 10a is thin, and cantilever 10c is then thick than flowing water compression zone 10a on the contrary.

So, in the present embodiment,, can shorten the size of tube axial direction by the water inlet end that blade 10 is arranged at butterfly shaped check valve 40.And, because the check-valves 40 of butterfly is used as check-valves, under bigbore situation, especially can realize miniaturization, effect is rather good.

Have again, by off-centre configuration blade 10, promptly, be disposed at by flowing water compression zone 10a on the water inlet end of the valve body 41 that can open with low flowing water pressure blade 10, can be so that blade 10 (flowing water compression zone 10a) be littler than pipe arrangement area, thus, can reduce the loss of the pressure that causes because of configuration blade 10.Pressure loss main cause is that the area by flowing water compression zone 10a causes, therefore can reduce the pressure loss by the area that reduces flowing water compression zone 10a.Also have,,, therefore can detect the flowing water of the valve body 41 of flowing through wherein exactly owing on the water inlet end of the valve body of more easily opening 41, dispose this flowing water compression zone 10a prejudicially even dwindle flowing water compression zone 10a.If flowing water pressure is for more than the regulation numerical value, then left and right

sides valve body

41,42 is opened simultaneously, and this moment is because flowing water pressure is very big, even therefore also certainly detect flowing water exactly for small-sized flowing water compression zone 10a.

But, because the rotating fulcrum 10b of blade 10 is not disposed at valve body 41 1 sides that can open with low flowing water pressure, but being disposed at another one valve body 42 1 sides as shown in Figures 2 and 3, the length of cantilever 10c increases, and can more accurately detect flowing water.

And, since with blade 10 according to intersecting with rotation fulcrum 43 approximate vertical of

valve body

41,42, and be positioned on the center line of butterfly shaped check valve 40 and dispose like that, thereby make blade 10 more effectively to bear flowing water pressure and rotate.

Also have, though flowing water compression zone 10a can adopt different shape,, be fan-shaped as in the embodiment shown, and for example compare for the situation of shapes such as quadrangle, not only can make pressure loss reduction, can also more effectively detect flowing water.

Have, the device in the present embodiment has also adopted the substrate-type identical with the 1st embodiment, can adopt installation method same as described above again.But substituting group is board-like and adopt to form the structure of screw thread and flange part also passable.

In addition, in the 1st, the 2nd embodiment,, use the flow detector that possesses this control valve integratedly also passable though generally control valve is equipped on the pipe arrangement of water inlet end.

Next said flow detector in the 3rd embodiment of the present invention is described.

Flow detector shown in Figure 4 is provided with: be used to switch to the water side and supply water and the control valve and the vane type flow test section 1 that stop to supply water, as control valve, employing be the globe valve 50 of realizing the switching of valve by the rotation of spherical valve body 51.

Control valve and water inlet end opening 52 and water side opening 53 are configured on the same straight line, and it comprises: the valve body 54 that also is provided with the three-dimensional hatch frame of an opening 58 on perpendicular crossing direction; Be incorporated in the spherical spherical valve body 51 in this valve body 54; And be installed on this spherical valve body 51 and as making the handle 55 of the operation tool that spherical valve body 51 rotates.In addition, vane type flow test section 1 is fixed in the opening 58 of valve body 54.

Spherical valve body 51 has identical structure with the valve body 51 that forms the so-called triple valve structure that roughly is " T " word shape hole.That is, it is provided with: central straight line runs through the main aperture 56 (internal flow path) of setting; And running through the secondary hole 57 that is arranged on the direction that intersects vertically with main aperture 56 from substantial middle position to the outside of main aperture 56, main aperture 56 is " T " word shape as a whole haply with secondary hole 57, and secondary hole 57 is communicated with the opening 58 of valve body 54.And handle 55 rotates around the center line in secondary hole 57, and is arranged at an opposite side in secondary hole 57.Therefore the pivot center T and the main aperture 56 of handle 55 intersect vertically.Operating grip 55, it is turn 90 degrees to any direction from open mode shown in Figure 4, main aperture 56 is in the state that valve is opened along the direction of tubular axis, so if make handle 55 rotate about 90 degree to any direction, main aperture 56 will intersect with the tube axial direction approximate vertical, changes the closed condition of valve into.

In addition, detect the flowing water by these spherical valve body 51 main apertures 56, insert blade 10 from secondary hole 57, flowing water compression zone 10a exposes in main aperture 56.Owing to secondary hole 57 is set on the pivot center T of handle 55 and blade 10 is inserted in these pair holes 57, even therefore operating grip 55, flowing water compression zone 10a also is positioned at main aperture 56 usually.

Therefore, in the present embodiment, because blade 10 is disposed in the main aperture 56 of spherical valve body 51, detect the flowing water of the main aperture 56 of flowing through with blade 10, therefore with compare in the situation of the water side of control valve arranged in series blade 10, can shorten the size of tube axial direction greatly.Yet, intersect vertically by pivot center T and the internal flow path (main aperture 56) that makes spherical valve body 51, and blade 10 is disposed on the pivot center T of spherical valve body 51, can form simple structure and blade 10 is built in the spherical valve body 51.

Also have, in the present embodiment, check-valves or simultaneously relief valve be connected with water side pipe arrangement by being located at the internal thread part of valve body 54 water side openings 53 with sprinkler tip, in addition, be connected with the pipe arrangement of water inlet end by the internal thread part of being located at valve body 54 water inlet end openings 52.But, internal thread part is not set and is to use above-mentioned substrate-type structure good, flange part perhaps can be set, be connected by bolt along tube axial direction with the flange part of pipe arrangement etc.

Have again, under the situation in the past, as shown in Figure 5, owing to blade 109 is disposed at the water side of check-valves 107, during draining control valve 106 is closed, the water that makes the water side flows out from drainpipe 111 by experimental water valve 110 or draining valve, and blade 109 detected the flowing water of these water sides and gave the alarm this moment.Do not detect during draining under the situation of flowing water, all must carry out electronics at every turn and stop.

In contrast, in the formation of present embodiment,, therefore be difficult to be subjected to the influence of water side draining basically because blade 10 is positioned at the water inlet end of check-valves.For this kind structure in the above-mentioned the 1st and the 2nd embodiment too.Also have in the present embodiment,, can stop of the influence of water side flowing water fully blade 10 by being in closing state as the globe valve 50 of control valve.That is, by control valve is in closed condition, can so that the functional machinery of vane type flow test section 1 stop.Therefore, even the water that gives off water end (W.E.) from drainpipe does not have the worry that blade 10 in the past starts and gives the alarm yet.Particularly particularly effective under the situation that check-valves is not set.

And, in the present embodiment,, check-valves can be installed as required because control valve and vane type flow test section 1 are the cellular construction of one, check-valves advantage on can the dual-purpose this point under the situation of necessity or the unnecessary situation is very big.But forming check-valves in the water side can certainly.

In addition, the check-valves rocker-arm that can rotate except the above-mentioned valve body of being located on the axle; And be divided into beyond two butterflies that roughly valve body of semicircular in shape rotates around axis jointly, for example can also adopt the check-valves that can make the parallel mobile various structures such as lift of the disc-shaped valve body that is fixed in the axostylus axostyle front end.But under bigbore situation, butterfly shaped check valve more produces effect.And, though above-mentioned control valve is the hand-operated valve that manually carries out open and close controlling by the operation of handle, drives the motor-driven valve that carries out open and close controlling by motor and also can use.In addition, can in the intent of the present invention scope, do suitable design alteration.

As mentioned above, because blade is arranged at the water inlet end of check-valves, therefore can be with blade and check-valves near disposing, compared with the past, can develop to miniaturization along the size of tube axial direction.

And, when globe valve is used as control valve, detect the structure of the flowing water of the spherical valve body internal flow path of flowing through with blade, make the size of its tube axial direction and control valve is compared in the structure of tube axial direction with the blade arranged in series in the past, can develop to miniaturization.

Claims

1. vane type flow detector, it comprises: rotate the vane type flow test section (1) that detects flowing water by blade when bearing flowing water pressure (10); And be used to switch to water side water supply and the control valve that stops to supply water; As this control valve use is the globe valve (50) that carries out the switching of valve by the rotation of spherical valve body (51), it is characterized in that, blade (10) is configured at spherical valve body (51) and goes up in the set internal flow path (56), when valve body is opened with flow through flowing water in spherical valve body (51) internal flow path (56) of blade (10) detection.