阅读说明：本技术 电力工业用疏水球阀 (Drainage ball valve for power industry ) 是由 吴俊伟 严启斌 黎玉飞 杨树君 吴中林 于 2020-04-10 设计创作，主要内容包括：本发明揭示了电力工业用疏水球阀,包括阀体、设于阀体内的流道内腔、可旋转启闭流道内腔的球体、抵持球体的两侧的上游阀座和下游阀座、以及贯穿阀体延伸至球体的阀杆,其特征在于：所述上游阀座与流道内腔的内壁之间浮动连接,所述下游阀座与流道内腔的内壁之间胀接,位于球体的上方设有嵌入阀体内的轴承,所述阀杆的底部为多边形结构,阀杆贯穿轴承延伸嵌入至球体顶部,阀杆与轴承之间可拆卸锁紧固定连接。本发明实现了密封阀体,提高阀门有效使用性能。(The invention discloses a drainage ball valve for the power industry, which comprises a valve body, a flow passage inner cavity arranged in the valve body, a ball body capable of rotating to open and close the flow passage inner cavity, an upstream valve seat and a downstream valve seat which support against two sides of the ball body, and a valve rod penetrating through the valve body and extending to the ball body, and is characterized in that: the upper reaches disk seat floats between the inner wall of runner inner chamber to be connected, expand between the inner wall of low reaches disk seat and runner inner chamber and connect, be located spheroidal top and be equipped with the bearing of embedding valve body, the bottom of valve rod is polygonized structure, and the valve rod runs through the bearing and extends embedding to spheroid top, can dismantle locking fixed connection between valve rod and the bearing. The invention realizes the sealing of the valve body and improves the effective use performance of the valve.)

1. Drainage ball valve for electric power industry includes the valve body, locates the runner inner chamber in the valve body, the rotatable spheroid of opening and close the runner inner chamber, supports the upper reaches disk seat and the low reaches disk seat of holding spheroidal both sides and runs through the valve body and extend to spheroidal valve rod, its characterized in that: the upper reaches disk seat floats between the inner wall of runner inner chamber to be connected, expand between the inner wall of low reaches disk seat and runner inner chamber and connect, be located spheroidal top and be equipped with the bearing of embedding valve body, the bottom of valve rod is polygonized structure, and the valve rod runs through the bearing and extends embedding to spheroid top, can dismantle locking fixed connection between valve rod and the bearing.

2. The hydrophobic ball valve for electric power industry according to claim 1, wherein: one end of the upstream valve seat is connected with the ball body in an abutting mode, and the other end of the upstream valve seat is connected with the first elastic piece embedded into the inner wall of the inner cavity of the flow channel in an abutting mode.

3. The hydrophobic ball valve for electric power industry according to claim 2, wherein: and a second elastic piece is clamped between the upstream valve seat and the first elastic piece.

4. The hydrophobic ball valve for electric power industry according to claim 1, wherein: the packing is filled between the valve rod and the valve body, the top end of the valve body is provided with a pressing plate which is sleeved with the valve rod plugging packing, and the top of the pressing plate is provided with a pressing cover which is sleeved with the valve rod.

5. The hydrophobic ball valve for electric power industry according to claim 1, wherein: the upper portion cover of valve rod is equipped with the support of erectting on the valve body, wears to be equipped with the installed part of locking to the valve body in the support.

6. The hydrophobic ball valve for electric power industry according to claim 5, wherein: the top of support is equipped with the adapter sleeve that cup joints the top of valve rod, and the periphery cover of adapter sleeve is equipped with the handle, can dismantle locking fixed connection between adapter sleeve and the valve rod.

7. The hydrophobic ball valve for electric power industry according to claim 1, wherein: the bottom of valve rod is the square structure, the recess that matches with the square structure is seted up at spheroid top.

8. The hydrophobic ball valve for electric power industry according to claim 1, wherein: the valve rod and the bearing are fixedly connected through a locking pin.

Technical Field

The invention belongs to the technical field of ball valves, and particularly relates to a drainage ball valve for the power industry.

Background

The ball valve is a valve whose opening and closing ball body is driven by valve rod and can make rotary motion around the axis of ball valve, and can be used for cutting off pipeline, and along with the rapid development of scientific technology and continuous improvement of production process and product structure, the ball valve can be quickly developed into a main valve class. However, the piston ring seal of the valve seat of the conventional hard seal ball valve adopts flexible graphite, which is limited by materials, the internal leakage is easy to occur after the use temperature of the valve is higher than 550 ℃, and when the nominal pressure of the valve is higher than Class2500, the flexible graphite is easy to disperse to cause the failure of the valve.

Disclosure of Invention

The invention aims to solve the technical problems and provides the drain ball valve for the power industry, so that a valve body is sealed, and the effective service performance of the valve is improved. In order to achieve the purpose, the technical scheme of the invention is as follows:

drainage ball valve for electric power industry includes the valve body, locates the runner inner chamber in the valve body, the rotatable spheroid of opening and close the runner inner chamber, supports the upper reaches disk seat and the low reaches disk seat of holding spheroidal both sides and runs through the valve body and extend to spheroidal valve rod, its characterized in that: the upper reaches disk seat floats between the inner wall of runner inner chamber to be connected, expand between the inner wall of low reaches disk seat and runner inner chamber and connect, be located spheroidal top and be equipped with the bearing of embedding valve body, the bottom of valve rod is polygonized structure, and the valve rod runs through the bearing and extends embedding to spheroid top, can dismantle locking fixed connection between valve rod and the bearing.

Specifically, one end of the upstream valve seat is abutted to the ball, and the other end of the upstream valve seat is abutted to the first elastic piece embedded into the inner wall of the inner cavity of the flow channel.

Specifically, a second elastic piece is clamped between the upstream valve seat and the first elastic piece.

Specifically, packing is arranged between the valve rod and the valve body, a pressing plate for sleeving the valve rod to block the packing is arranged at the top end of the valve body, and a pressing cover for sleeving the valve rod is arranged at the top of the pressing plate.

Specifically, the upper portion cover of valve rod is equipped with the support of erectting on the valve body, wears to be equipped with the installed part of locking to the valve body in the support.

Specifically, the top of support is equipped with the adapter sleeve that cup joints the top of valve rod, and the periphery cover of adapter sleeve is equipped with the handle, can dismantle locking fixed connection between adapter sleeve and the valve rod.

Specifically, the bottom of valve rod is the square structure, the recess that matches with the square structure is seted up at the spheroid top.

Specifically, the valve rod and the bearing are fixedly connected through a locking pin.

Compared with the prior art, the drainage ball valve for the power industry has the following beneficial effects:

the valve body adopts an integrated structure, so that the service performance of the valve is effectively improved; the downstream valve seat and the valve body are connected in an expansion joint mode and made of the same material, so that the leakage problem caused by expansion with heat and contraction with cold is effectively avoided, and particularly for the application of the power industry, the cross change of temperature is large, and the sealing effect is obvious; the valve rod is connected with the ball body in a polygonal structure splicing mode, so that the ball body is effectively prevented from being subjected to overlarge position deviation, and the reliable sealing of the valve is ensured; the bearing is detachably, fixedly and fixedly connected with the valve rod, so that the valve rod is prevented from flying out and separating from the valve body in the rotating operation, and the strength of the valve rod is improved; the handle is installed through the connecting sleeve, so that the stable fixing effect is achieved, and parts installed on the valve rod are effectively reduced.

Drawings

FIG. 1 is a schematic sectional front view of an embodiment of the present invention;

FIG. 2 is a schematic side view of the present embodiment;

FIG. 3 is an enlarged view of a portion of FIG. 1;

the figures in the drawings represent:

1 valve body, 11 flow passage cavities, 2 balls, 21 grooves, 3 upstream valve seats, 31 clamp springs, 32 disc springs, 4 downstream valve seats, 5 valve rods, 51 packing, 52 pressing plates, 53 pressing covers, 6 bearings, 61 locking pins, 7 supports, 71 bolts, 8 connecting sleeves and 81 handles.

Detailed Description

The technical solutions in the embodiments of the present invention are described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.