阅读说明：本技术 一种阀芯方向可调的盘形阀液控装置 (Disc valve hydraulic control device with direction-adjustable valve core ) 是由 黎宗亮 于 2020-06-17 设计创作，主要内容包括：本发明提供的一种阀芯方向可调的盘形阀液控装置,包括关节轴承,销,叉头,传动轴,支架,左旋螺母,联杆旋套,锁定螺栓,锁紧螺母,接力器和阀门阀芯；本发明提供的一种阀芯方向可调的盘形阀液控装置,本专利采用关节轴承对阀门阀芯关闭时的错位进行调节,安全稳定可靠；采用简易的旋套结构,解决了阀门轴向长度的安装调节；仅利用一个锁定螺栓解决了阀门全关和全开的锁定问题；一体式接力器实现轻量化设计,节约成本；利用简单的刻度板结构对阀门的开启全行程进行观测。(The invention provides a disc valve hydraulic control device with an adjustable valve core direction, which comprises a joint bearing, a pin, a fork head, a transmission shaft, a bracket, a left-handed nut, a link rod turnbuckle, a locking bolt, a locking nut, a servomotor and a valve core; the invention provides a disc valve hydraulic control device with an adjustable valve core direction, which adopts a joint bearing to adjust the dislocation of a valve core when the valve core is closed, and is safe, stable and reliable; the simple rotary sleeve structure is adopted, so that the installation and adjustment of the axial length of the valve are realized; the locking problem of full closing and full opening of the valve is solved by only one locking bolt; the integrated servomotor realizes lightweight design and saves cost; the open full stroke of the valve is observed by utilizing a simple scale plate structure.)

1. A disc valve hydraulic control device with an adjustable valve core direction is characterized by comprising a joint bearing, a pin, a fork head, a transmission shaft, a bracket, a left-handed nut, a link rod rotating sleeve, a locking bolt, a locking nut, a servomotor and a valve core;

the servomotor is arranged above the bracket, a piston rod of the servomotor extends downwards into the bracket, the lower end of the piston rod of the servomotor is connected with the transmission shaft through the link rod rotary sleeve, the transmission shaft is connected with the valve core of the valve through the joint bearing, a pin and a fork head, the left-handed nut is arranged at the upper end of the transmission shaft and used for locking the transmission shaft and the link rod rotary sleeve, and the locking nut is arranged at the lower end of the piston rod of the servomotor and used for locking the piston rod and the link rod rotary sleeve of the servomotor;

the support is internally provided with a positioning plate, threaded through holes which are communicated left and right are formed in the positioning plate, a locking bolt is in threaded connection with the threaded through holes in the positioning plate and is positioned on the left side of the locking bolt, a first through hole is formed in the left side wall of the support, the left end of the locking bolt penetrates through the first through hole, an upper positioning groove and a lower positioning groove are formed in the left side wall of the connecting rod rotating sleeve on the right side of the locking bolt, and the positioning grooves are matched with the locking bolt and used for locking the positions of the upper end point and the lower end point of the connecting rod rotating.

2. The hydraulic control device for the disc valve with the direction of the valve element adjustable according to claim 1, wherein a second through hole is formed in the right side wall of the support, a guide rod is vertically arranged on the right side wall of the link rod rotating sleeve, a pointer is arranged at the right end of the guide rod, the right end of the guide rod penetrates through the second through hole, a scale plate is arranged on the outer surface of the right side wall of the support, and the scale plate is located at the edge of the second through hole.

3. The hydraulic control device for the disc valve with the direction-adjustable valve element as claimed in claim 1, wherein the servomotor is an integrated servomotor.

4. The hydraulic control device for the disc valve with the direction-adjustable valve element according to any one of claims 1 to 3, wherein the servomotor is connected with the bracket through a stud.

Technical Field

The invention relates to the field of hydroelectric facility equipment, in particular to a disc valve hydraulic control device with an adjustable valve core direction.

Background

The disc-shaped drain valve of the water turbine is one of key components of the unit, and the overhauling drain quantity of the unit depends on the accumulated water quantity in the volute, the tail water pipe and the pressure pipeline and the water leakage quantity of the upstream and downstream water blocking gates. In order to ensure that a large amount of accumulated water in the volute and the pressure pipeline can automatically drain as much as possible, a drain pipe and a drain valve are arranged at the lowest part of the volute or the pressure pipeline and communicated with a tail water pipe, so that a large amount of accumulated water higher than the downstream tail water level is automatically drained, and the residual water is drained by a water pump. When the power station is overhauled, the bottom of the tail water pipe diffusion section is provided with a drain pipe and a drain valve which are communicated with the water collecting well, so that accumulated water at the bottom of the tail water pipe is drained.

The operation modes of the disc-shaped drain valve of the water turbine are generally divided into mechanical operation and hydraulic operation, and different operation modes are designed according to the actual requirements of power stations so as to meet the requirements of different power stations. The patent relates to a hydraulic operating device of a disc valve, which aims to ensure that the disc valve can be operated safely and reliably and is beneficial to normal sealing and opening and closing of a disc drain valve; if the disc drain valve works normally, the safety of normal operation and maintenance of the unit is directly influenced.

At present, a traditional disc valve hydraulic control device is commonly used, as shown in figure 1, the hydraulic control device is connected with a valve core 1-16 of a valve through a shaft sleeve 1-1, a pin shaft 1-2 and a transmission shaft 1-3; the servomotor of the hydraulic control device consists of a piston rod 1-6, a gland 1-7, an upper seal seat 1-8, a piston 1-9 and a servomotor cylinder 1-10, bolts 1-12 are used for fixing the servomotor cylinder 1-10 and a rear cover 1-11, and the servomotor is fixed on a bracket 1-4 through bolts 1-14; the travel switches 1-5 and the pointers 1-15 are used for providing full-off and full-on signals of the hydraulic control device; the technical scheme has the following defects: 1. the hydraulic control device and the valve core of the valve adopt ear handle fork head structures, can only swing in one direction, have poor guidance quality and cannot be self-adjusted; 2. the transmission shaft and the servomotor rod are connected by adopting single internal and external threads, so that the axial direction cannot be adjusted, and the installation is difficult; 3. the travel switch can only provide a full-closed state or a full-open state of the valve, and when foreign matter is blocked, signals cannot be transmitted; 4. the hydraulic device adopts a split servomotor, has a complex structure and is inconvenient to install; 5. the full-closed and full-open are not provided with locking devices, and the use is inconvenient.

Disclosure of Invention

The invention provides a disc valve hydraulic control device with an adjustable valve core direction, aiming at the problems and the defects in the background technology, the invention adopts a joint bearing to adjust the dislocation of the valve core when the valve is closed, and is safe, stable and reliable; the simple rotary sleeve structure is adopted, so that the installation and adjustment of the axial length of the valve are realized; the locking problem of full closing and full opening of the valve is solved by only one locking bolt; the integrated servomotor realizes lightweight design and saves cost; the open full stroke of the valve is observed by utilizing a simple scale plate structure.

The technical scheme adopted by the invention is as follows:

a disc valve hydraulic control device with an adjustable valve core direction comprises a joint bearing, a pin, a fork head, a transmission shaft, a bracket, a left-handed nut, a link rod rotating sleeve, a locking bolt, a locking nut, a servomotor and a valve core of a valve;

the servomotor is arranged above the bracket, a piston rod of the servomotor extends downwards into the bracket, the lower end of the piston rod of the servomotor is connected with the transmission shaft through the link rod rotary sleeve, the transmission shaft is connected with the valve core of the valve through the joint bearing, a pin and a fork head, the left-handed nut is arranged at the upper end of the transmission shaft and used for locking the transmission shaft and the link rod rotary sleeve, and the locking nut is arranged at the lower end of the piston rod of the servomotor and used for locking the piston rod and the link rod rotary sleeve of the servomotor;

the support is internally provided with a positioning plate, threaded through holes which are communicated left and right are formed in the positioning plate, a locking bolt is in threaded connection with the threaded through holes in the positioning plate and is positioned on the left side of the locking bolt, a first through hole is formed in the left side wall of the support, the left end of the locking bolt penetrates through the first through hole, an upper positioning groove and a lower positioning groove are formed in the left side wall of the connecting rod rotating sleeve on the right side of the locking bolt, and the positioning grooves are matched with the locking bolt and used for locking the positions of the upper end point and the lower end point of the connecting rod rotating.

In one embodiment, a second through hole is formed in the right side wall of the support, a guide rod is vertically arranged on the right side wall of the link rod turnsleeve, a pointer is arranged at the right end of the guide rod, the right end of the guide rod penetrates through the second through hole, a scale plate is arranged on the outer surface of the right side wall of the support, and the scale plate is located at the edge of the second through hole.

In one embodiment, the servomotor is an integral servomotor.

In one embodiment, the servomotor is connected with the bracket through a stud.

Compared with the prior art, the disc valve hydraulic control device with the direction-adjustable valve core provided by the invention has the following advantages:

1. the disc valve hydraulic control device with the valve core adjustable in direction, provided by the invention, is connected with the valve core of the valve through the knuckle bearing, the pin, the fork and the transmission shaft, and the knuckle bearing can realize multi-direction adjustment of the valve core of the valve, so that the control of the hydraulic control device on the valve is more facilitated.

2. According to the disc valve hydraulic control device with the valve core adjustable in direction, the transmission shaft and the servomotor are connected through the left-handed nut, the link rod turnsleeve and the locking bolt, so that the adjustment of the axial sizes of the transmission shaft and the servomotor is realized, and the correction of installation elevation errors is facilitated.

3. According to the disc valve hydraulic control device with the valve core adjustable in direction, the outer wall of the connecting rod rotating sleeve is provided with the upper groove and the lower groove which are used for limiting the position of the connecting rod rotating sleeve, and the limiting of the position of the upper end point and the lower end point of the connecting rod rotating sleeve is carried out by matching with the locking bolt, so that the locking of the valve core of the valve in a fully closed state and a fully opened state is correspondingly realized.

4. According to the disc valve hydraulic control device with the valve core direction adjustable, the servomotor is fixedly arranged on the support through the stud, so that hydraulic control operation is achieved, the servomotor is an integrated servomotor, finished products are directly purchased, the structure is simple, the size is small, field installation and testing are not needed, long-term stable operation of a unit is facilitated, and economic benefits of a power station are effectively guaranteed.

5. The disc valve hydraulic control device with the valve core direction adjustable, provided by the invention, directly reflects the axial movement numerical value of the connecting rod rotating sleeve on the scale plate through the guide rod, the pointer and the scale plate, so that an operator can visually observe the states of full-closed and full-open of the valve and the state of the valve in the middle position.

Drawings

FIG. 1 is a schematic diagram of a conventional disc valve pilot operated device;

fig. 2 is a schematic structural diagram of a disc valve hydraulic control device of the invention.

Detailed Description

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and the like are used in the indicated orientations and positional relationships based on the orientation shown in the drawings for convenience in describing the invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in FIG. 2, for convenience of description, the "up", "down", "left", "right", "front" and "back" orientation references in the present invention are based on the orientation shown in FIG. 2;

a disc valve hydraulic control device with an adjustable valve core direction comprises a joint bearing 1, a pin 2, a fork 3, a transmission shaft 4, a bracket 6, a left-handed nut 7, a link rod rotating sleeve 8, a locking bolt 9, a locking nut 10, a servomotor 12 and a valve core 16;

the servomotor 12 is arranged above the bracket 6, a piston rod of the servomotor 12 extends downwards into the bracket 6, the lower end of the piston rod of the servomotor 12 is connected with the transmission shaft 4 through the link rod rotary sleeve 8, the transmission shaft 4 is connected with the valve spool 16 through the joint bearing 1, the pin 2 and the fork 3, the left-handed nut 7 is arranged at the upper end of the transmission shaft 4 and used for locking the transmission shaft 4 and the link rod rotary sleeve 8, and the locking nut 10 is arranged at the lower end of the piston rod of the servomotor 12 and used for locking the piston rod of the servomotor 12 and the link rod rotary sleeve 8;

the inner part of the bracket 6 is provided with a positioning plate 17, the positioning plate 17 is provided with a threaded through hole which is communicated left and right, a locking bolt 9 is screwed in the threaded through hole on the positioning plate 17, the left side wall of the bracket 6 positioned on the left side of the locking bolt 9 is provided with a first through hole 18, the left end of the locking bolt 9 penetrates through the first through hole 18, the left side wall of the connecting rod turnbuckle 8 positioned on the right side of the locking bolt 9 is provided with an upper positioning groove 20 and a lower positioning groove 20, and the locking bolt 9 is matched with the positioning grooves 20 to lock the upper end point and the lower.

The preferred embodiment is the knuckle bearing 1, and correspondingly, other bearings with universal functions can be adopted to replace the knuckle bearing;

in the embodiment, the transmission shaft 4 and the servomotor 12 are preferably connected through the left-handed nut 7, the link rod turnbuckle 8 and the locking bolt 9, so that the adjustment of the axial size of the valve is realized, and correspondingly, mechanisms such as a telescopic joint and the like can be adopted for adjusting the axial length of the valve;

in the embodiment, preferably, the outer wall of the link rod rotating sleeve 8 is provided with an upper groove 20 and a lower groove 20 for limiting the position of the link rod rotating sleeve 8, and the upper end point and the lower end point of the link rod rotating sleeve 8 are limited by matching with the locking bolt 9, so that the full-closed and full-open states of the valve core of the valve are correspondingly locked, and correspondingly, other hydraulic or mechanical locking mechanisms can be adopted to lock the full-closed or full-open positions of the valve.

In the present embodiment, the servomotor 12 is preferably a hydraulically driven servomotor, and accordingly, the operation of the servomotor may be controlled by a driving mode such as gas control.

In this embodiment, a second through hole 19 is formed in the right side wall of the bracket 6, a guide rod 14 is vertically arranged on the right side wall of the link rod rotating sleeve 8, a pointer 15 is arranged at the right end of the guide rod 14, the right end of the guide rod 14 penetrates through the second through hole 19, a scale plate 13 is arranged on the outer surface of the right side wall of the bracket 6, and the scale plate 13 is located at the edge of the second through hole 19.

In the embodiment, the axial movement value of the connecting rod rotary sleeve 8 is preferably directly reflected on the scale plate 13 through the guide rod 14 and the pointer 15 in cooperation with the scale plate 13, so that an operator can visually observe the fully closed, fully opened and intermediate positions of the valve conveniently, and correspondingly, other automatic elements with analog signal functions can be installed to monitor the opening state of the valve.

6. Preferably, the servomotor 12 is an integrated servomotor, the servomotor 12 adopts the integrated servomotor, finished products are directly purchased, the structure is simple, the size is small, field installation and test are not needed, the long-term stable operation of the unit is facilitated, and the economic benefit of the power station is effectively guaranteed.

Preferably, the servomotor 12 is connected with the bracket 6 through a stud.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.