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Three-way ball valve

A three-way ball valve, spherical valve core technology, applied in the direction of multi-way valve, safety valve, balance valve, etc., can solve the problems of fluid pressure, flow change, fluid pressure change, lack of working mode and use, etc., to achieve convenient control, Simple and ingenious structure, the effect of keeping the fluid pressure stable

Inactive Publication Date: 2008-09-03
ZHONGYEDA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing three-way ball valve has deficiencies in the above adjustment process. Specifically, in the above adjustment process, the fluid pressure inside the main channel will change sharply due to the sharp change in the opening cross section of the two branch channels and the change in the opening cross section of the main channel, such as As shown in Fig. 14, Fig. 15, and Fig. 16, during the evolution from the state shown in Fig. 14 to the state shown in Fig. 16, the sum of the opening cross-sections of the B-runner and the C-runner is reduced by half, resulting in The fluid pressure and flow rate change greatly
[0004] For this reason, Chinese patent ZL01240821.2 proposes a kind of three-way ball valve, and it can realize that the flow rate of the series pipeline is constant, but the working method and the application of this three-way ball valve control on-off have deficiencies, for example, it cannot realize the complete flow of the three-way ball valve. Shut off, that is, it is impossible to cut off each other between the three channels

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 The three-way ball valve shown includes a valve body 1 and a spherical valve core 2. The valve body has a main channel (A) and two branch channels (B, C). The two channel channels (B, C) are located on the same straight line. The main channel The channel is perpendicular to the two sub-channels. The main channel and the two sub-channels are distributed in a "T" shape. When the valve body 1 and the spherical valve core 2 are assembled, the intersection point O That is, the center position of the spherical spool; figure 1 As shown, there are arc-shaped parts at the junction of the main channel of the valve body and the two sub-runners, where the junction of the main channel (A) and the sub-runner (B) is the arc-shaped part SW, the main channel (A) and the sub-runner The junction of (C) is the arc-shaped part FE, and the arc-shaped part SW and the arc-shaped part FE are both matched with the spherical surface of ...

Embodiment 2

[0037] The structure of this embodiment is basically the same as that of Embodiment 1, except that the value of the geometric value is changed. The radian θ (that is, ∠EOF or ∠SOW) of the arc-shaped part at the junction of the main channel and the branch channel of the valve body in this embodiment is 10°, and image 3 The arc of the extension part MHN of the middle groove on the spherical surface of the valve core is β (ie ∠MON) and changed to 175°, and the solid part of the non-groove (ie image 3 The radian of the MKN part in ) is 185°, so there is also 180°-θ<β<180°+θ. The average depth of the groove is 1 / 3 of the spool radius.

[0038] Embodiment 2 can realize multiple different working states like Embodiment 1.

Embodiment 3

[0040] The structure of this embodiment is basically the same as that of Embodiment 1, except that the value of the geometric value is changed. In this embodiment, the radian θ (∠EOF or ∠SOW) of the arc portion at the junction of the valve main channel and the branch channel is 16°, and the arc of the groove MHN on the spherical surface of the valve core is changed from β to 185°. °, correspondingly, the solid part of the non-groove (ie image 3 The radian of the MKN part in ) is 175°, so there is also 180°-θ<β<180°+θ. The average depth of the groove is 2 / 3 of the spool radius.

[0041] The third embodiment is also the same as the first embodiment, and can realize multiple different working states.

[0042] In the second and third embodiments above, the points G and H of the spool are approximately symmetrical with respect to the center O of the sphere, so that the flow rate flowing into the channel A can still be basically adjusted during the process of adjusting and changi...

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Abstract

A three-way ball valve comprises a valve body and a sphere spool, the valve body has a main tube (A) and two runners (B, C), the intersection point O of central axis m1 of main tube and central axis m2 of two runners is the centre of sphere of the sphere spool; the arc parts matching to sphere spool surface are arranged on the juncture of main tube and two runners; grooves are arranged on the sphere spool, the groove cavity of groove are arranged on two sides of the plane determined by intersection of the central axis m1 and the central axis m2, the radian of the groove extended on the sphere spool surface is beta, and 180 degrees-theta<beta<180 degrees +theta, wherein, theta is radian of arc part on the juncture of main tube and runners. The present invention has multiplicity work type and purpose of make-break control, can realize shut off totally, and the flux and the liquid pressure in the main tube can't changed rapidly in the process of adjusting and changing distributary proportion in the two runners.

Description

technical field [0001] The invention belongs to a three-way valve, in particular to a three-way ball valve with a spherical valve core. Background technique [0002] Three-way valves can realize the confluence and diversion of fluids, especially liquids, and are widely used in various industries. The three-way valve has two methods: straight stroke adjustment and spherical rotation adjustment. Among them, the adjustment characteristic of the straight stroke method is better, but the valve body size is larger; the three-way valve with the spherical rotation adjustment method uses a spherical valve core, so it is also called three-way. Ball valves, they have the advantage of small size. [0003] The three-way ball valve has a main flow channel and two branch flow channels, which can realize a variety of different control on-off working methods, but the most commonly used working method and purpose is to adjust and change the two branch flow channels while keeping the main flo...

Claims

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Application Information

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IPC IPC(8): F16K11/087F16K17/36
Inventor 杨松
Owner ZHONGYEDA ELECTRIC CO LTD
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