CN203146840U

CN203146840U - Electromagnetic steam stop valve

Info

Publication number: CN203146840U
Application number: CN 201320184148
Authority: CN
Inventors: 柯金定
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-14
Filing date: 2013-04-14
Publication date: 2013-08-21
Anticipated expiration: 2023-04-14

Abstract

The utility model discloses an electromagnetic steam stop valve which comprises a valve body and a guiding pipe. The valve body is connected with a valve deck. The lower end of the guiding pipe is welded with the valve deck and penetrates through the valve deck. The upper end of the guiding pipe is welded with a shell cover. A sheet-type heat dissipating piece is installed at the lower end of the outer diameter of the guiding pipe and an electromagnetic coil assembly is arranged at the upper end of the outer diameter of the guiding pipe and is tightened by a cap-shaped nut. A pilot rod is installed in the valve deck. A magnet is arranged at the upper end of the pilot rod. A small valve clack sealing ring is arranged in a groove formed in the lower end of the pilot rod and is in contact with a large valve clack piston arranged on the valve body. The upper end of the large valve clack piston is connected with a piston cap through threads. A copper coil is arranged on a groove formed in the lower end of the shell cover. A reset spring is arranged on the magnet. The pilot rod and the small valve clack sealing ring are fixed through a fixing pin. A large valve clack sealing ring is arranged between the large valve clack piston and the valve body. The electromagnetic steam stop valve is simple in structure, good in heat dissipating effect and long in service life.

Description

The electromagnetism steam stop

Technical field

The utility model relates to the valve technology field, mainly is applicable to all kinds of steam pipe system valves, relates in particular to a kind of electromagnetism steam stop.

Background technique

The stop valve of Sheng Chaning does not all solve the water attack problem in the valve pipeline in the market, presses in the pipeline principle that produces water attack, everyly causes that the violent speed change of current all may cause water attack in the pipeline.Concerning valve, close rapidly or open rapidly all and can produce water hammer, also because of change in flow greatly, cause soon.When closing, speed becomes 0 rapidly by maximum; When opening, speed becomes maximum rapidly by 0.Just cause water attack easily as a little big speed differences.In fact water attack velocity in pipes acute variation just causes that fluid momentum changes to change mutually with pressure to produce.

Valve closing and when opening, not only can produce water attack in valve downstream, downstream at valve also may produce water attack, not only valve is closed fully and may be produced water attack, the part of valve is closed too may produce water attack, water attack divides direct water attack and indirectly water attack, the pressure that water attack produces at the valve closing place all be on the occasion of, claim direct water attack.Directly the pressure of water attack generation may be very big, may cause the damage of breaking of valve and pipeline.Water hammer is inevitable, and problem is how to make the pressure of direct water attack unsuitable excessive, the destruction of avoiding water attack to cause.

The model utility content

In order to overcome above shortcomings part in the prior art, the purpose of this utility model is to provide a kind of electromagnetism steam stop, and this electromagnetism steam stop has not only overcome the working life that water attack problem and heat dissipation problem have also improved product.

In order to reach above-mentioned purpose, the utility model adopts following concrete technological scheme: the electromagnetism steam stop comprises valve body, guide pipe, connect valve gap on the described valve body, described guide pipe lower end and valve gap are welded together, and in valve gap, upper end and end socket are welded together.In guide pipe external diameter lower end the chip radiating fin is housed, the electromagnetic coil assembly is equipped with in the upper end, and tighten with acorn nut, first guide rod is installed in valve gap, described first guide rod upper end is provided with suction iron, be provided with little flap seal ring in the groove of lower end, and contact with big valve flap piston on the valve body, described big valve flap piston upper end connects with piston cap by screw thread.

Further, the groove of end socket described in the utility model lower end is provided with copper band.

Further, suction iron described in the utility model is provided with Returnning spring.

Further, first guide rod described in the utility model and little flap seal ring fix by fixing pin.

Further, be provided with the big valve flap seal ring between big valve flap piston described in the utility model and the valve body.

The utility model advantage compared with prior art is: this electromagnetism steam stop is simple in structure, good heat dissipation effect, and long service life.

Description of drawings

Fig. 1 is structural representation of the present utility model;

The utility model is described in further detail below in conjunction with accompanying drawing.

Embodiment

In order further to explain the technical solution of the utility model, the utility model is elaborated below by specific embodiment.

Embodiment 1:

With reference to shown in Figure 1, the electromagnetism steam stop comprises valve body 1, guide pipe 4, connects valve gap 2 on the described valve body 1, and described guide pipe 4 lower ends and valve gap 2 are welded together, and in valve gap 2, upper end and end socket 9 are welded together.In guide pipe 4 external diameter lower ends chip radiating fin 3 is housed, electromagnetic coil assembly 10 is equipped with in the upper end, and tighten with acorn nut 8, first guide rod 11 is installed in valve gap 2, described first guide rod 11 upper ends are provided with inhales iron 5, be provided with little flap seal ring 13 in the groove of lower end, and contact with big valve flap piston 16 on the valve body 1, described big valve flap piston 16 upper ends connect with piston cap 12 by screw thread.The groove of described end socket 9 lower ends is provided with copper band 7.Described suction iron 5 is provided with Returnning spring 6.Described first guide rod 11 fixes by fixing pin 15 with little flap seal ring 13.Be provided with big valve flap seal ring 14 between described big valve flap piston 16 and the valve body 1.

The utility model working principle: when valve need be opened, electromagnetic coil 10 energising earlier, inhale iron 5 and produce magnetic force, spurring first guide rod 11 moves upward, make little flap seal ring 13 leave little valve seat position in the big valve flap piston body 16, little flap is opened, there is a spot of fluid to flow into the bottom from valve seat top, this moment, the pressure of piston body 16 inner chambers descended, cause the pressure of piston body 16 exocoels greater than the pressure of inner chamber, form pressure difference, and therefore this pressure difference of balance at once of the throttle orifice on this moment big valve flap piston 16 bodies forces big valve flap piston 16 bodies to move upward under this pressure difference, and big valve flap seal ring 14 leaves the big valve flap valve seat, thereby big valve flap is opened, and from then on a large amount of fluids flow out.Owing to open from little flap earlier, after again big valve flap open, flow velocity is not rapid variation, but relatively slowly, thereby has avoided generation or the deterioration of water hammer.When closing, electromagnetic coil 10 outage magnetic force are eliminated, move downward and inhale iron 5 first guide rod 11 of promotion under Returnning spring 6 effects, little flap seal ring 13 is closed earlier, this moment, the pressure of big valve flap piston 16 intracoelomic cavities raise, cause big valve flap piston 16 intracoelomic cavity pressure greater than outer cavity pressure, force big valve flap seal ring 14 to be closed downwards, owing to close slower, change in flow is not too big, so also avoid the direct surge pressure rapidly to increase, reduced hydrodynamic pressure to the washing away of obturator, thus the working life of improving product.

The utility model radiating fin is to adopt multidisc radiating fin 3, and radiating fin 3 volumes are little, and heat diffusion area is really very big, so radiating effect is also just relatively good.Product is steam valve, and generally temperature also is the position that needs the emphasis heat radiation all than higher in the middle part of product, is more rational so the dress radiating fin is contained in the product neutral position.Chip radiating fin 3 is contained on the valve gap 2, is enclosed within on the guide pipe 4, because guide pipe 4 also is a thin pipe fitting of keeping away of elongated, also heat radiation easily so the heat radiation position of this product and radiating effect are all relatively good, is well suited for the heat radiation requirement of steam valve.

But above-mentioned embodiment is exemplary, is to be the restriction that this patent is comprised scope in order better to make those skilled in the art can understand this patent, can not to be interpreted as; So long as according to spirit that this patent discloses do anyly be equal to change or modify, all fall into the scope that this patent comprises.

Claims

1. electromagnetism steam stop, comprise valve body, guide pipe, connect valve gap on the described valve body, it is characterized in that: described guide pipe lower end and valve gap are welded together, and in valve gap, the upper end is welded together with end socket, in guide pipe external diameter lower end the chip radiating fin is housed, the electromagnetic coil assembly is equipped with in the upper end, and tightens with acorn nut, and first guide rod is installed in valve gap, described first guide rod upper end is provided with suction iron, be provided with little flap seal ring in the groove of lower end, and contact with big valve flap piston on the valve body, described big valve flap piston upper end connects with piston cap by screw thread.

2. electromagnetism steam stop as claimed in claim 1, it is characterized in that: the groove of described end socket lower end is provided with copper band.

3. electromagnetism steam stop as claimed in claim 1, it is characterized in that: described suction iron is provided with Returnning spring.

4. electromagnetism steam stop as claimed in claim 1, it is characterized in that: described first guide rod and little flap seal ring fix by fixing pin.

5. electromagnetism steam stop as claimed in claim 1 is characterized in that: be provided with the big valve flap seal ring between described big valve flap piston and the valve body.